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Sabtu, 28 April 2012

Cara mencegah penyakit jantung


Walaupun 7 tips pertama anda ikuti, dan anda juga nggak ngerokok, anda sudah mengurangi kemungkinan serangan jantung sampai dengan 90 persen! Apalagi jika semua anda ikuti.
1. Jalan selama 30 menit setiap hari! Nggak ada alasan!, lalu setelah itu, coba telepon seseorang. jalan setengah jam setiap hari, menurunkan resiko serangan jantung sekitar 30 persen. Ini semacam ujian bagi anda, Jika anda sukses melakukan hal ini, kemungkinan anda mulai akan melakukan kompromi2 yang lain. Bertelepon dengan orang lain adalah langkah yang sangat penting: karena akan memperkuat komitmen anda. O yah, coba telepon rekan perempuan anda, karena mereka akan lebih mendukung anda.
2. Kenali tekanan darah anda, dan lakukan apapun, supaya mencapai angka 115/75. Tenakan darah anda mungkin bahkan lebih penting daripada kolesterol anda. Dan, anda bisa menurunkan tekana ini sendiri. Cara terbaik? Olah raga teratur, dan kurangi lemak di perut. Kenapa? karena lemak ini menutupi organ2 penting, sehingga, supaya organ2 ini bisa bekerja lebih baik, dibutuhkan tekanan darah lebih. Jadi, ketika lemak perut berkurang, tekanan darah yang dibutuhkan akan menurun drastis.
3. Makan 250gr kacang2an setiap hari. Kacang2an akan meningkatkan kadar kolesterol baik, HDL, dan menurunkan radang. Kacang juga membantu menyehatkan jantung dengan alasan yang belum jelas. Kacang memiliki kadar asam lemak Omega 3 tinggi, memiliki protein dan serat tinggi.
4. Coba cari tahu kadar HDL anda dan coba tingkatkan sampai di nilai 50. Bagi wanita, nilai HDL tinggi jauh lebih baik daripada LDL rendah. Entah kenapa, tapi yang jelas, makin tinggi nilai HDL, makin bagus (50 sudah termasuk bagus). CAra termudah untuk meningkatkan nilainya adalah olahraga, kurangi minuman keras, makan makanan dengan lemak sehat, misalnya: zaitun, canola. Asam Pantotenat (vit. B5) juga bisa membantu.
5. Makan 10 sendok makan saus tomat dalam seminggu. Ini adalah tips favorit saya. Saus tomat penuh dengan kalium yang menurunkan tekanan darah. Yang saya maksud, bukan saus tomat yang asin, gurih dan berlemak, atau yang disajikan dengan pasta dalam jumlah raksasa. Saus biasa, sederhana, dan sehat.
6. Secara teratur, gunakan benang gigi. Menghindari penyakit mulut, mencegah radang arteri, yang membantu anda mengurangi kemungkinan sakit jantung. Jarang ada orang yang tahu bahwa kesehatan mulut anda mempengaruhi semua kesehatan arteri anda, yang mempengaruhi keadaan aliran darah ke jantung dan organ seksual anda, bahkan, mempengaruhi kerutan pada kulit.
7. Jangan makan minyak jenuh lebih dari 20 gram setuap hari, dan gunakan minyak trans sesedikit mungkin. Lemak jenuh dan lemak trans akan menyebabkan radang arteri. Cinnamon roll (roti kayu manis) memiliki 7 gram lemak jenuh. Minyak trans (misalnya dalam mentega atau margarin), sering ditemukan dalam makanan yang diproses atau dipanggang dalam oven.
8. Baca label, dan segera taruh kembali makanan yang label, dengan 5 bahan pertama menuliskan gula. Kenapa? urutan bahan diurutkan berdasarkan kandungan terbanyak. Memang boleh rendah lemak, tapi jika tinggi gula, sama aja boong. Kenapa? karena jika anda makan gula berlebihan, ujung2nya jadi lemak juga, yang ditumpuk di sekitar perut.
9. Minum alkohol? kurangi, sehari segelas aja. Kami sendiri masih belum jelas, tapi minuman beralkohol seperti bir dan anggur memiliki efek anti – radang. Tapi sering ditemukan bahwa mereka yang tidak minum alkohol sama sekali, malah memiliki kemungkinan serangan jantung lebih tinggi daripada mereka yang minum sedikit2. O yah! minum 7 gelas sehari nggak sama efeknya dengna minum 1 gelas tiap hari!
10. Makan 9 porsi sayuran dan buah setiap hari. Buah dan sayuran penuh dengan serat. Coba pelan2 tingkatkan jumlahnya dalam 2 – 6 minggu. karena jika jumlahnya meningkat drastis, malah kurang ok hasilnya, dan mempengaruhi pencernaan anda sendiri!.


Biografi Cristiano Ronaldo | Biografi Tokoh Dunia | Biografi dan Profil Tokoh Terkenal

Biografi Cristiano Ronaldo | Biografi Tokoh Dunia | Biografi dan Profil Tokoh Terkenal





Proteus vulgaris


24h old culture
Kingdom:
Phylum:
Class:
Gamma Proteobacteria
Order:
Family:
Enterobacteriaceae
Genus:
Species:
P. vulgaris
Proteus vulgaris
Hauser 1885
Proteus vulgaris is a rod-shaped, Gram negative bacterium that inhabits the intestinal tracts of humans and animals. It can be found in soil, water and fecal matter. It is grouped with the enterobacteriaceae and is an opportunistic pathogen of humans. It is known to cause urinary tract infections and wound infections.
The term Proteus signifies changeability of form, as personified in the Homeric poems in Proteus, "the old man of the sea," who tends the sealflocks of Poseidon and has the gift of endless transformation. The first use of the term “Proteus” in bacteriological nomenclature was made by Hauser (1885) who described under this term three types of organisms which he isolated from putrefied meat. One of the three species Hauser identified was Proteus vulgaris so this organism has a long history in Microbiology.
Over the past two decades the genus Proteus, and in particular P. vulgaris, has undergone a number of major taxonomic revisions. In 1982, P. vulgaris was separated into three biogroups on the basis of indole production. Biogroup one was indole negative and represented a new species: P. penneri; while biogroup two and three remained together as P. vulgaris.
Lab Identification
According to laboratory conducted fermentation tests, P. vulgaris ferments glucose and amygdalin, but does not ferment mannitol or lactose. P. vulgaris also tests positive for the methyl red (mixed acid fermentation) test and is also an extremely motile organism.
When P. vulgaris is tested using the API 20E Identification System [1] test strip for enterobacteriaceae (made by BIOMERIEUX) [2], it is discovered that it provides a positive result for: sulfur reduction, urease production, tryptophan deaminase production, and indole production, and provides a negative result for the remainder of the tests on the testing strip.
It is referenced in the Analytical Profile Index using the seven-digit code: 0474021
The optimal growing conditions of this organism is in a facultative anaerobic environment with an average temperature of about 37 degrees Celsius .
The Becton/Dickinson BBL Enterotube II system for identification of members of the family Enterobacteriaceae inoculated with Proteus vulgaris may yield the following results: Positive for Glucose fermentation (with gas production). Negative for Lysine and Ornithine. Positive for Hydrogen sulfide production and positive for Indole production. Negative for Adonitol and Lactose. Negative for Arabinose, Sorbitol and Dulcitol. The Phenylalanine test was positive as was the Harnstoff Urea test. Proteus vulgaris tested positive for Citrate. All combine for a "Biocode ID of 31407" for use in the Interpretation Guide/Computer Coding and Identification System (CCIS). Note that Proteus vulgaris can also test Urease negative in solid media (such as in Enterotube), but will be Urease positive in liquid media. The CCIS code will still identify Proteus vulgaris with a negative urease test.
Proteus Infections
Etiology & Epidemiology
  • Nosocomial infections
  • Proteus mirabilis causes 90% of Proteus infections.
  • Proteus vulgaris and Proteus penneri are easily isolated from individuals in long-term care facilities and hospitals and from patients with underlying diseases or compromised immune systems.
  • Patients with recurrent infections, those with structural abnormalities of the urinary tract, those who have had urethral instrumentation, and those whose infections were acquired in the hospital have an increased frequency of infection caused by Proteus and other organisms (e.g., Klebsiella, Enterobacter, Pseudomonas, enterococci, staphylococci)
Pathogenesis & Virulence
motility flagella
adherence factors
Fimbriae - facilitate adherence and thus enhance the capacity of the organism to produce disease
inflammatory response
IL-6/IL-8 secretion - attachment to uroepithelial cells initiates secretion apoptosis and epithelial cell desquamation pyelonephritis - Bacterial production of urease increases risk bacteremia & sepsis - bacterial endotoxin (LPS)
Survival urease production - alkalinize the urine by hydrolyzing urea to ammonia makes proteus effective in producing an environment in which it can survive.
Clinical Expression
Bacteremia & sepsis - Enterobacteriaceae (of which Proteus is a member) and Pseudomonas species are the microorganisms most commonly responsible for gram-negative bacteremia.
The presence of the sepsis syndrome associated with a UTI should raise the possibility of urinary tract obstruction. This is especially true of patients who reside in long-term care facilities, who have long-term indwelling urethral catheters, or who have a known history of urethral anatomic abnormalities.
UTI obstruction - Urease production leads to precipitation of organic and inorganic compounds, which leads to struvite stone formation. Struvite stones are composed of a combination of magnesium ammonium phosphate (struvite) and calcium carbonate-apatite. Struvite stone formation can be sustained only when ammonia production is increased and the urine pH is elevated to decrease the solubility of phosphate. Both of these requirements can occur only when urine is infected with a urease-producing organism such as Proteus. Urease metabolizes urea into ammonia and carbon dioxide: Urea 2NH3 + CO2. The ammonia/ammonium buffer pair has a pK of 9.0, resulting in the combination of highly alkaline urine rich in ammonia.
Symptoms attributable to struvite stones are uncommon. More often, women present with UTI, flank pain, or hematuria and are found to have a persistently alkaline urine pH (>7.0).
Treatments
Known antibiotics that P. vulgaris is sensitive to:
Ciprofloxacin
Ceftazidime
Netilmicin
Sulbactam or Cefoperazo
Meropenem
Piperacillin/tazobactam
Unasyn
Antibiotics should be introduced in much higher doses than "normal" when P. vulgaris has infected the sinus or respiratory tissues. I.E.- Ciprofloxacin should be introduced at a level of at least 2000 mg per day orally in such a situation, rather than the "standard" 1000 mg per day.
Sumber : http://en.wikipedia.org/wiki/Proteus_vulgaris

Klebsiella ozaenae


The genus Klebsiella belongs to the tribe Klebsiellae, a member of the family Enterobacteriaceae. The organisms are named after Edwin Klebs, a 19th century German microbiologist. Klebsiellae are nonmotile, rod-shaped, gram-negative bacteria with a prominent polysaccharide capsule. This capsule encases the entire cell surface, accounts for the large appearance of the organism on gram stain, and provides resistance against many host defense mechanisms.
Members of the Klebsiella genus typically express 2 types of antigens on their cell surface. The first is a lipopolysaccharide (O antigen); the other is a capsular polysaccharide (K antigen). Both of these antigens contribute to pathogenicity. About 77 K antigens and 9 O antigens exist. The structural variability of these antigens forms the basis for classification into various serotypes. The virulence of all serotypes appears to be similar.
The genus was originally divided into 3 main species based on biochemical reactions. Today, 7 species with demonstrated similarities in DNA homology are known. These are (1) Klebsiella pneumoniae, (2) Klebsiella ozaenae, (3) Klebsiella rhinoscleromatis, (4) Klebsiella oxytoca, (5) Klebsiella planticola, (6) Klebsiella terrigena, and (7) Klebsiella ornithinolytica. K pneumoniae is the most medically important species of the group. K oxytoca and K rhinoscleromatis have also been demonstrated in human clinical specimens. In recent years, klebsiellae have become important pathogens in nosocomial infections.[1] 


This scanning electron micrograph (SEM) reveals some of the ultrastructural morphologic features of Klebsiella pneumoniae. Courtesy of CDC/Janice Carr.
Pathophysiology
Host defense against bacterial invasion depends on phagocytosis by polymorphonuclear granulocytes and the bactericidal effect of serum, mediated in large part by complement proteins. Both classic-pathway and alternate-pathway complement activation have been described, but the latter, which does not require the presence of immunoglobulins directed against bacterial antigens, appears to be the more active pathway in K pneumoniae infections.
Recent data from preclinical studies suggest a role for neutrophil myeloperoxidase and lipopolysaccharide-binding protein in host defense against K pneumoniae infection. Neutrophil myeloperoxidase is thought to mediate oxidative inactivation of elastase, an enzyme implicated in the pathogenesis of various tissue-destroying diseases. Lipopolysaccharide-binding protein facilitates transfer of bacterial cell wall components to inflammatory cells. Investigators showed higher rates of infection in experimental mice deficient in the genes that control expression of these 2 agents.
The bacteria overcome innate host immunity through several means. They possess a polysaccharide capsule, which is the main determinant of their pathogenicity. The capsule is composed of complex acidic polysaccharides. Its massive layer protects the bacterium from phagocytosis by polymorphonuclear granulocytes. In addition, the capsule prevents bacterial death caused by bactericidal serum factors. This is accomplished mainly by inhibiting the activation or uptake of complement components, especially C3b. The bacteria also produce multiple adhesins. These may be fimbrial or nonfimbrial, each with distinct receptor specificity. These help the microorganism to adhere to host cells, which is critical to the infectious process.
Lipopolysaccharides (LPS) are another bacterial pathogenicity factor. They are able to activate complement, which causes selective deposition of C3b onto LPS molecules at sites distant from the bacterial cell membrane. This inhibits the formation of the membrane attack complex (C5b-C9), which prevents membrane damage and bacterial cell death.
Availability of iron increases host susceptibility to K pneumoniae infection. Bacteria are able to compete effectively for iron bound to host proteins because of the secretion of high-affinity, low molecular weight iron chelators known as siderophores. This is necessary because most host iron is bound to intracellular and extracellular proteins. In order to deprive bacteria of iron, the host also secretes iron-binding proteins.
Epidemiology
Klebsiellae are ubiquitous in nature. In humans, they may colonize the skin, pharynx, or gastrointestinal tract. They may also colonize sterile wounds and urine. Carriage rates vary with different studies. Klebsiellae may be regarded as normal flora in many parts of the colon and intestinal tract and in the biliary tract. Oropharyngeal carriage has been associated with endotracheal intubation, impaired host defenses, and antimicrobial use.
K pneumoniae and K oxytoca are the 2 members of this genus responsible for most human infections. They are opportunistic pathogens found in the environment and in mammalian mucosal surfaces. The principal pathogenic reservoirs of infection are the gastrointestinal tract of patients and the hands of hospital personnel. Organisms can spread rapidly, often leading to nosocomial outbreaks.
Infection with Klebsiella organisms occurs in the lungs, where they cause destructive changes. Necrosis, inflammation, and hemorrhage occur within lung tissue, sometimes producing a thick, bloody, mucoid sputum described as currant jelly sputum. The illness typically affects middle-aged and older men with debilitating diseases such as alcoholism, diabetes, or chronic bronchopulmonary disease. This patient population is believed to have impaired respiratory host defenses. The organisms gain access after the host aspirates colonizing oropharyngeal microbes into the lower respiratory tract.
Klebsiellae have also been incriminated in nosocomial infections. Common sites include the urinary tract, lower respiratory tract, biliary tract, and surgical wound sites. The spectrum of clinical syndromes includes pneumonia, bacteremia, thrombophlebitis, urinary tract infection (UTI), cholecystitis, diarrhea, upper respiratory tract infection, wound infection, osteomyelitis, and meningitis. The presence of invasive devices, contamination of respiratory support equipment, use of urinary catheters, and use of antibiotics are factors that increase the likelihood of nosocomial infection with Klebsiella species. Sepsis and septic shock may follow entry of organisms into the blood from a focal source.
Rhinoscleroma and ozena are 2 other infections caused by Klebsiella species. These diseases are rare. Rhinoscleroma is a chronic inflammatory process involving the nasopharynx, whereas ozena is a chronic atrophic rhinitis characterized by necrosis of nasal mucosa and mucopurulent nasal discharge.
K oxytoca has been implicated in neonatal bacteremia, especially among premature infants and in neonatal intensive care units. Increasingly, the organism is being isolated from patients with neonatal septicemia.
Extensive use of broad-spectrum antibiotics in hospitalized patients has led to both increased carriage of klebsiellae and, subsequently, the development of multidrug-resistant strains that produce extended-spectrum beta-lactamase (ESBL). These strains are highly virulent, show capsular type K55, and have an extraordinary ability to spread. Most outbreaks are due to a single clone or single gene; the bowel is the major site of colonization with infection of the urinary tract, respiratory tract, and wounds. Bacteremia and significant increased mortality have resulted from infection with these species.
In addition to prior antibiotic use, risk factors for infection include the presence of an indwelling catheter, feeding tube, or central venous catheter; poor health status; and treatment in an intensive care unit or nursing home. Acquisition of these species has become a major problem in most hospitals because of resistance to multiple antibiotics and potential transfer of plasmids to other organisms.
Epidemiology
Frequency
United States
In some parts of the world, K pneumoniae is an important cause of community-acquired pneumonia in elderly persons. Studies conducted in Malaysia and Japan estimate the incidence rate in elderly persons to be 15-40%, which is equal to, if not greater than, that of Haemophilus influenzae. However, in the United States, these figures are different. Persons with alcoholism are the main population at risk, and they constitute 66% of people affected by this disease. Mortality rates are as high as 50% and approach 100% in persons with alcoholism and bacteremia.
Klebsiellae are also important in nosocomial infections among adult and pediatric populations. Klebsiellae account for approximately 8% of all hospital-acquired infections. In the United States, depending on the study reviewed, they comprise 3-7% of all nosocomial bacterial infections, placing them among the top 8 pathogens in hospitals. Klebsiellae cause as many as 14% of cases of primary bacteremia, second only to Escherichia coli as a cause of gram-negative sepsis. They may affect any body site, but respiratory infections and UTIs predominate.
Of 145 reported epidemic outbreaks of nosocomial bacteremias during 1983-1991, 13 were attributed to Klebsiella organisms. The US Centers for Disease Control and Prevention report that Klebsiella strains were responsible for 3% of all pathogenic epidemic outbreaks.
An investigation of Klebsiella pneumoniae carbapenemase (KPC)-producing Enterobacteriaceae among patients of acute and long-term acute care hospitals was conducted in 2011. The investigation found extensive spread of KPC-producing Enterobacteriaceae throughout 4 adjacent counties in Indiana and Illinois over a 1-yr period. Long-term acute care hospitals played a central role in the outbreak, suggesting that guidelines for controlling KPC should be expanded to include long-term care facilities. Education of personnel and coordinated regional efforts among health care facilities are crucial for KPC control.[2]
K oxytoca is among the top 4 pathogens that cause infection in patients in neonatal intensive care units. It is the second most frequent cause of gram-negative neonatal bacteremia.
International
Outbreaks of neonatal septicemia occur worldwide. Infection with K pneumoniae also has a worldwide distribution. Infection with K rhinoscleromatis is not common in the United States, although it has a worldwide distribution and is usually observed in areas of eastern Europe, southern Asia, central Africa, and Latin America.
Mortality/Morbidity
  • Klebsiella pneumonia is a necrotizing process with a predilection for debilitated people. It has a high mortality rate of approximately 50% even with antimicrobial therapy. The mortality rate approaches 100% for persons with alcoholism and bacteremia.
  • Klebsiella bacteremia and sepsis produce clinical manifestations similar to those caused by other gram-negative enteric organisms. Morbidity and mortality rates are comparable to those for other gram-negative organisms that cause sepsis and septic shock. In neonatal units, outbreaks caused by ESBL-producing strains present a more serious problem and may be associated with increased mortality.
Age
  • Community-acquired Klebsiella (Friedlãnder) pneumonia is a disease of debilitated middle-aged and older men with alcoholism.
  • Nosocomial infections may affect adults or children, and they occur more frequently in premature infants, patients in neonatal intensive care units, and hospitalized individuals who are immunocompromised.
Sumber : http://emedicine.medscape.com/article/219907-overview#showall

Jumat, 27 April 2012

Leukimia



PENYEBAB PENYAKIT LEUKEMIA dan PENGOBATANNYA
Leukemia merupakan bagian dari penyakit kanker, yang mana masyarakat umum menyebutnya dengan nama Kanker Darah itu karena terjadi pada sel – sel darah. Leukemia (kanker darah) adalah jenis penyakit yang menyerang sel – sel darah putih yang diproduksi oleh sumsum tulang (Bone Marrow). Sumsum tulang atau bone marrow ini dalam tubuh manusia memproduksi tiga tipe sel darah yang diantaranya adalah sel darah putih ( yang berfungsi sebagai sistem imun / daya tahan tubuh terhadap infeksi ), sel darah merah ( berfungsi membawa oksigen kedalam tubuh ) dan platelet (bagian kecil sel darah yang membantu proses pembekuan darah ).
Leukemia pada umumnya sudah muncul pada diri seseorang sejak usia dini, dimana sumsum tulang tanpa diketahui dengan jelas penyebabnya telah memproduksi sel darah putih ayng berkembang tidak normal. Secara normal, sel darah putih me-reproduksi ulang bila diperlukan oleh tubuh atau ada tempat bagi sel darah itu sendiri. Tubuh manusia akan memberikan sinyal atau tanda secara teratur apabila sel darah dibutuhkan untuk be-reproduksi kembali.
Pada kasus Leukemia, sel darah putih ternyata tidak merespon terhadap sinyal yang diberikan sehingga produksi berlebihan dan tidak terkontrol dan akhirnya keluar dari sumsum tulang dan dapat ditemukan di dalam darah perifer atau darah tepi. Seseorang dengan kondisi seperti ini (Leukemia) akan menunjukkan gejala deperti ini : mudah terkena penyakit infeksi, anemia dan pendarahan.
Leukemia Akut dan Kronis
Leukemia akut ditandai dengan suatu perjalanan penyakit yang sangat cepat, mematikan dan memburuk. Apabila hal ini tidak segera diobati, maka dapat menyebabkan kematian dalam hitungan minggu hingga hari. Sedangkan Leukemia kronis memiliki perjalanan yang tidak begitu cepat sehingga memiliki harapan hidup yang lebih lama, hingga lebih dari 1 tahun.
Jika berdasarkan sel darah putih yang terkena, baik itu Limphoid atau Myeloid, maka Leukemia dibagi menjadi :
1. Leukemia Limfositik akut (LLA), merupakan tipe Leukemia paling sering terjadi pada anak – anak. Tetapi penyakit ini juga terdapat pada dewasa terutama mereka yang telah berusia 65 tahun atau lebih.
2. Leukemia Mielositik Akut (LMA). Ini lebih sering terjadi pada dewasa daripada anak – anak. Tipe ini dahullu disebut Leukemia Nonlimfositik akut.
3. Leukemia Limfositik Kronis (LLK). Orang dewasa yang telah berusia lebih dari 55 tahun lebih sering terkena Leukemia ini, walaupun orang dewasa yang masih muda juga bisa terkena ini. Akan tetapi tipe Leukemia ini hampir tidak pernah terjadi pada anak – anak.
4. Leukemia Mielositik (LMK). Yang ini sering terjadi pada semua orang dewasa dan dapat juga terjadi pada anak – anak tetapi sangat sedikit.
Penyebab Penyakit Leukemia
Walaupun sampai saat ini belum ada / belum ditemukan penyebab utama dari Leukemia ini, akan tetapi ada beberapa faktor yang bisa menjadi pemicu terjadinya Leukemia pada setiap orang, diantaranya adalah :
a. Radiasi. Hal ini berdasarkan riset pada pegawai Radiologi yang ternyata lebih sering menderita Leukemia. Leukemia ini juga ditemukan pada korban radiasi bom atom di Heroshima dan Nagasaki (Jepang).
b. Leukemogenik. Beberapa zat kimia telah diidentifikasi dapat mempengaruhi frekuensi Leukemia, misalnya racun lingkungan seperti benzena, bahan kimia industri seperti insektisida serta obat – obatan yang digunakan untuk kemoterapi.
c. Herediter. Yang mana penderita Down Syndrom 20% lebih besar akan terkena Leukemia daripada orang normal.
d. Virus. Ada beberapa jenis virus yang dapat menyebabkan Leukemia, antara lain : retrovirus, virus leukemia feline, HTLV-1 pada dewasa.
Tanda dan Gejala Penyakit Leukemia
Secara umum tanda dan gejala leukemia dapat digambarkan sebagai berikut;
1. Anemia. Penderita akan merasa cepat lelah, pucat dan bernafas cepat (dimana sel darah merah di bawah normal sehingga oksigen dalam tubuh kurang).
2. Pendarahan. Ketika Platelet (sel pembeku darah) tidak terproduksi secara wajar karena didominasi oleh sel darah putih, sehingga menyebabkan penderita akan mengalami pendarahan di jaringan kulit (bisa berup banyaknya jentik merah lebar atau kecil pada jaringan kulit).
3. Terserang Infeksi. Karena sel darah putih tidak bisa berfungsi secara maksimal sebagai pelindung daya tahan tubuh, sehingga tubuh penderita mudah terkena virus/bakteri, bahkan dengan sendirinya mengalami demam, keluar cairan putih dari hidung (meler) dan batuk.
4. Nyeri Tulang dan Persendian. Hal ini disebabkan sebagai akibat dari sumsum tulang mendesak padat oleh sel darah putih.
5. Nyeri Perut. Nyeri perut juga bisa menjadi indikasai gejala Leukemia, dimana sel leukemia dapat terkumpul pada organ ginjal, hati dan empedu yang menyebabkan pembesaran pada organ – organ tubuh dan timbullah nyeri.
6. Pembengkakan Kelenjar Lympa. Yang bisa terjadi di bawah leher, lengan dada dan lainnya. Kelenjar Lympa bertugas menyaring darah, karena tidak berfungsi dengan baik sehingga sel leukemia terkumpul dan mengakibatkan pembengkakan
7. Kesulitan Bernafas (Dyspnea). Penderita mungkin menampakkan gejala kesulitan bernafas dan nyeri dada, apabila hal ini terjadi, maka harus segera mendapatkan pertolongan medis.
Diagnosa Penyakit Leukemia ( Kanker Darah )
Penyakit Leukemia dapat dipastikan dengan beberapa pemeriksaan, diantaranya adalah : Biopsy, pemeriksaaan darah ( Complete Bloood Count (CBC)), CT atau CAT scan, Magnetic Resonance Imaging (MRI), X-ray, Ultrasound, Spinal tap/ lumbar puncture.
Penanganan dan Pengobatan Leukemia
Penanganan kasus Leukemia biasanya berdasarkan gejala – gejala yang muncul seperti yang telah saya sebutkan diatas. Namun secara garis besar, penanganan dan pengobatan Leukemia dapat dilakukan dengan cara single atau gabungan dari beberapa metode dibawah ini :
a. Chemotherapy / intrathecal medications.
b. Therapy Radiasi (metode ini sangat jarang dilakuikan).
c. Transplantasi bone marrow (sumsum tulang).
d. Pemberian obat – obatan tablet dan suntik.
5. Transfusi sel darah merah atau Platelet.

Sedangkan sistem therapi yang sering digunakan adalah kombinasi antara Chemotherapy dan pemberian obat – obatan yang berfokus pada pemberhentian produksi sel darah putih yang tidak normal dalam bone marrow. Selanjutnya adalah penanganan terhadap beberapa gejala dan tanda – tanda yang telah ditampakkan oleh tubuh penderita dengan monitor yang komprehensive. Dan bagi yang membutuhkan file PDFnya, download saja ini Leukemia (dari berbagai sumber)

Sumber :
http://opensains.wordpress.com/2009/07/27/penyebab-penyakit-leukemia-dan-pengobatannya/


Kamis, 26 April 2012

PimpMyBBM: Kumpulan Animated Avatar Untuk BBM | Jeruk Nipis

PimpMyBBM: Kumpulan Animated Avatar Untuk BBM | Jeruk Nipis


Ctenocephalides canis


Scanning electron microscope (SEM) depiction of a flea
Kingdom:
Phylum:
Class:
Subclass:
Infraclass:
Superorder:
Order:
Siphonaptera
Latreille, 1825
Aphaniptera
Fleas are the insects forming the order Siphonaptera. They are wingless, with mouthparts adapted for piercing skin and sucking blood. Fleas are external parasites, living by hematophagy off the blood of mammals (including bats and humans) and birds.
Some flea species include:

 Morphology and behavior

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diagram of a Flea
Fleas are wingless insects (1/16 to 1/8-inch (1.5 to 3.3 mm) long) that are agile, usually dark colored (for example, the reddish-brown of the cat flea), with tube-like mouth-parts adapted to feeding on the blood of their hosts. Their legs are long, the hind pair well adapted for jumping: a flea can jump vertically up to 7 inches (18 cm) and horizontally up to 13 inches (33 cm).[3] This is around 1200 to 2200 times their own body length, making the flea one of the best jumpers of all known animals (relative to body size), second only to the froghopper. According to an article in Science News, "researchers with the University of Cambridge in England have shown that fleas take off from their tibiae and tarsi—the insect equivalent of feet—and not their trochantera, or knees. The researchers report their conclusion in the March 1 Journal of Experimental Biology."[4] It has been known that fleas do not use muscle power but energy stored in a protein named resilin but the researchers used high-speed video technology and mathematical models to discover where the spring action actually happens. Their bodies are laterally compressed, permitting easy movement through the hairs or feathers on the host's body (or in the case of humans, under clothing). The flea body is hard, polished, and covered with many hairs and short spines directed backward,[5] which also assist its movements on the host. The tough body is able to withstand great pressure, likely an adaptation to survive attempts to eliminate them by mashing or scratching. Even hard squeezing between the fingers is normally insufficient to kill a flea. It is possible to eliminate them by pressing individual fleas with adhesive tape or softened beeswax (or "cheese" wax) or by rolling a flea briskly between the fingers to disable it then crushing it between the fingernails. Fleas also can be drowned in water and may not survive direct contact with anti-flea pesticides
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Hooke's drawing of a flea in Micrographia
Fleas lay tiny white oval-shaped eggs better viewed through a loupe. The larva is small, pale, has bristles covering its worm-like body, lacks eyes, and has mouthparts adapted to chewing. The larvae feed on various organic matter, especially the feces of mature fleas. The adult flea's diet consists solely of fresh blood.[6] In the pupal phase, the larva is enclosed in a silken, debris-covered cocoon.
 Life cycle and habitat
Fleas are holometabolous insects, going through the four life cycle stages of egg, larva, pupa, and imago (adult). The flea life cycle begins when the female lays after feeding. Adult fleas must feed on blood before they can become capable of reproduction.[5] Although reproduction is normally asexual, for at least one specie, under stress conditions, female fleas produce male fleas. [7]. Eggs are laid in batches of up to 20 or so, usually on the host itself, which means that the eggs can easily roll onto the ground. Because of this, areas where the host rests and sleeps become one of the primary habitats of eggs and developing fleas. The eggs take around two days to two weeks to hatch.[3]


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Micrograph of a flea larva.
Flea larvae emerge from the eggs to feed on any available organic material such as dead insects, feces, and vegetable matter. They are blind and avoid sunlight, keeping to dark places like sand, cracks and crevices, and bedding. Given an adequate supply of food, larvae should pupate and weave a silken cocoon within 1–2 weeks after 3 larval stages. After another week or two, the adult flea is fully developed and ready to emerge from the cocoon. They may however remain resting during this period until they receive a signal that a host is near - vibrations (including sound), heat, and carbon dioxide are all stimuli indicating the probable presence of a host.[3] Fleas are known to overwinter in the larval or pupal stages.
Once the flea reaches adulthood, its primary goal is to find blood and then to reproduce.[8] Adult fleas only have about a week to find food once they emerge, but after that they can survive two months to a year between meals. Flea populations are unevenly distributed, with about 50% eggs, 35% larvae, 10% pupae, and 5% adults.[3] Their total life cycle can be as short as two weeks, but may be several months in ideal conditions. Female fleas can lay 500 or more eggs over their life, allowing for phenomenal growth rates.
Adult female rabbit fleas, Spilopsyllus cuniculi, can detect the changing levels of cortisol and corticosterone, hormones in the rabbit's blood that indicate she is getting close to giving birth. This triggers sexual maturity in the fleas and they start producing eggs. As soon as the baby rabbits are born, the fleas make their way down to them and once on board they start feeding, mating, and laying eggs. After 12 days, the adult fleas make their way back to the mother. They complete this mini-migration every time she gives birth.[9]
Newly emerged adult fleas live only about one week if a blood meal is not obtained. However, completely developed adult fleas can live for several months without eating, so long as they do not emerge from their puparia. Optimum temperatures for the flea's life cycle are 70°F to 85°F (21°C to 30°C) and optimum humidity is 70%.[9]
Classification

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Cat flea
Fleas are related to mecoptera,[10] winged insects with good eyesight. The flightless boreid (snow scorpionfly) with its rudimentary wings seems to be close to the common ancestor of the 2000 or so known varieties of flea, which split off in many directions around 160 million years ago.[10] Their evolution continued to produce adaptations for their specialized parasitic niche, such that they now have no wings and their eyes are covered over. The large number of flea species may be attributed to the wide variety of host species they feed on, which provides so many specific ecological niches to adapt to.
In the past, it was most commonly supposed that fleas had evolved from the flies (Diptera), based on similarities of the larvae. (Some authorities use the name Aphaniptera because it is older, but names above family rank need not follow the ICZN rules of priority, so most taxonomists use the more familiar name). Genetic and morphological evidence indicates that they are descendants of the Scorpionfly family Boreidae, which are also flightless; accordingly it is possible that they will eventually be reclassified as a suborder within the Mecoptera. In any case, all these groups seem to represent a clade of closely related insect lineages, for which the names Mecopteroidea and Antliophora have been proposed.
Flea systematics are not entirely fixed. While, compared to many other insect groups, fleas have been studied and classified fairly thoroughly, details still remain to be learned about the evolutionary relationships among the different flea lineages.
  • Infraorder Pulicomorpha
    • Superfamily Pulicoidea
    • Superfamily Malacopsylloidea
      • Family Malacopsyllidae
      • Family Rhopalopsyllidae—hosts
      • Family Vermipsyllidae—hosts: carnivores
    • Superfamily Coptopsylloidea
      • Family Coptopsyllidae
    • Superfamily Ancistropsylloidea
      • Family Ancistropsyllidae
  • Infraorder Pygiopsyllomorpha
    • Superfamily Pygiopsylloidea
      • Family Lycopsyllidae
      • Family Pygiopsyllidae
      • Family Stivaliidae
  • Infraorder Hystrichopsyllomorpha
    • Superfamily Hystrichopsylloidea
      • Family Hystrichopsyllidae—hosts: rats and mice. Includes Ctenopsyllidae, Amphipsyllidae
      • Family Chimaeropsyllidae
    • Superfamily Macropsylloidea
      • Family Macropsyllidae
    • Superfamily Stephanocircidoidea
Relationship with host

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Flea bites on the back of a human

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Flea bite on the waist of a human with no reaction
Fleas attack a wide variety of warm-blooded vertebrates including dogs, cats, humans, chickens, rabbits, squirrels, rats, ferrets, and mice.
Direct effects of bites
Main article: Pulicosis
Fleas are a nuisance to their hosts, causing an itching sensation which in turn may result in the host attempting to remove the pest by biting, pecking, scratching, etc. in the vicinity of the parasite. Fleas are not simply a source of annoyance, however. Some people and animals suffer allergic reactions to flea saliva resulting in rashes. Flea bites generally result in the formation of a slightly raised, swollen itching spot with a single puncture point at the center (similar to a mosquito bite). The bites often appear in clusters or lines of two bites, and can remain itchy and inflamed for up to several weeks afterwards. Fleas can also lead to hair loss as a result of frequent scratching and biting by the animal, and can cause anemia in extreme cases.[11]:126
As a vector
Besides the problems posed by the creature itself, fleas can also act as a vector for disease. Fleas transmit not only a variety of viral, bacterial and rickettsial diseases to humans and other animals, but also protozoans and helminths.[12]:72–73
Fleas that specialize as parasites on specific mammals may use other mammals as hosts; therefore humans are susceptible to the predation of more than one species of flea.[15]
A misconception concerning the carrying/transmission of the HIV/AIDS by fleas has been debunked by the Centers for Disease Control and Prevention (CDC 2003), which stated that fleas cannot carry the virus and spread it to other humans.


For humans
Fleas can settle in a person's hair in less than ten minutes, causing soreness and itching. The itching associated with flea bites can be treated with anti-itch creams, usually antihistamines or hydrocortisone.[16] Calamine lotion has been shown to be effective for itching.[17]
 For pets

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Flea and tick repellant powder being applied to a dog
Modern flea control is approached using Integrated Pest Management (IPM) protocols at the host (pet) level. IPM is achieved by targeting fleas during at least two separate life stages, with at least two separate molecules. This is typically achieved using an adulticide to kill adult fleas and an insect development inhibitor (IDI), like lufenuron, or insect growth regulator (IGR), like methoprene, to prevent development of immature stages. Flea adults, larvae, or eggs can be controlled with insecticides. Lufenuron is a veterinary preparation (Program) that attacks the larval flea's ability to produce chitin but does not kill fleas. Flea medicines need to be used with care because many of them also affect mammals.
Cedar oil, a non-toxic natural substance, has been proven effective in the eradication of infestations in pets. Cedar oil is being used to treat sand-flea infestation of US Military forces in the Persian Gulf.[18]
Since more than three quarters of a flea's life is spent somewhere other than on the host animal, it is not adequate to treat only the host; it is important also to treat the host's environment. Thorough vacuuming, washing linens in hot water, and treating all hosts in the immediate environment (the entire household, for example) are essential and if possible on a regular basis.[19]
Contemporary commercial products for the topical treatment of flea infestations on pets contain pesticides such as imidacloprid, permethrin, and (S)-methoprene. All flea control products are recommended to be used at least half-yearly because the lifecycle of flea and tick can last to up to 6 months, and by using one of the flea and tick control products for so long, the infestation is highly prevented and, in the end, stopped. Although all these products are effective in fighting against flea and tick infestations, they have different active ingredients and, because cats cannot metabolize some of the compounds of the product, care must be taken in their use.
For the home
Combatting a flea infestation in the home takes patience because for every flea found on an animal, there could be many more developing in the home. A spot-on insecticide will kill the fleas on the pet and in turn the pet itself will be a roving flea trap and mop up newly hatched fleas. The environment should be treated with a fogger or spray insecticide containing an insect growth regulator, such as pyriproxyfen or methoprene to kill eggs and pupae, which are quite resistant against insecticides. Frequent vacuuming is also helpful, but the vacuum bag must be disposed of immediately afterwards. Fleas tend to breed exponentially in piles of shoes.

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Flea "dirt" in the fur of a cat is actually excess blood from the host consumed by the adult flea and passed as feces
Diatomaceous earth can also be used as a home flea treatment in lieu of acetylcholinesterase inhibitory treatments or insecticides which carry with them a risk of poisoning for both humans and animals. However, diatomaceous earth is at least potentially dangerous to pets and people when inhaled, so care in use is recommended.
Dried pennyroyal has been suggested as a natural flea control,[20] but is not recommended in homes with pets due to its high toxicity to mammals.[21]
Borax is sold as a "Natural Laundry Booster" and can also be used as another home treatment for flea infestations. Borax contains sodium borate which kills fleas by dehydrating them, but its safety for pets is untested.[22]
Using dehumidifiers with air conditioning and vacuuming all may interrupt the flea life cycle. Humidity is critical to flea survival. Eggs need relative humidity of at least 70–75% to hatch, and larvae need at least 50% humidity to survive. In humid areas, about 20% of the eggs survive to adulthood; in arid areas, less than 5% complete the cycle.[23] Fleas thrive at higher temperatures, but need 70° to 90°F (21° to 32°C) to survive. Lower temperatures slow down or completely interrupt the flea life-cycle. A laboratory study done at the University of California showed that vacuuming catches about 96% of adult fleas. A combination of controlled humidity, temperature, and vacuuming should eliminate fleas from an environment. Altering even one of these environmental factors may be enough to drastically lower and eliminate an infestation.
See also
Sumber : http://en.wikipedia.org/wiki/Flea