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"Saat ini tidak ada metode standar untuk uji kepekaan obat terhadap Mycobacterium tuberculosis di antara laboratorium-laboratorium di Indonesia. Sejak bulan Januari 2002 sampai dengan Januari 2004, kami mencoba menerapkan metode plat dengan 25 sumur yang berisi media middlebrook’s (metode Drug Susceptibility Culture Plate (DSCP)) yang digunakan oleh Dutch Supranational Reference Laboratory at the Institute of Public Health and the Environment (RIVM), Bilthoven, Netherlands. Pengalaman kami memperlihatkan bahwa metode ini berpotensi memberikan hasil yang lebih baik karena sangat mudah distandardisasi, hasilnya lebih cepat dan dapat memperlihatkan nilai KHM (Konsentrasi Hambat Minimum) yang lebih terperinci. Data dari 364 isolat yang telah diuji dengan metode DSCP memperlihat resistensi terhadap INH, rifampisin, ethambutol, dan streptomisin secara berurutan adalah 21,4%; 19,8%; 15,7%; and 16,5%. Resistensi ganda didapatkan pada 13,2% isolat. (Med J Indones 2005; 14: 142-6)

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At present, there is no standardized method for Mycobacterium tuberculosis drug susceptibility testing (DST) among laboratories in Indonesia. Since January 2001 to January 2004 we have tried to establish the method of 25-well culture plates with middlebrook’s media (Drug Susceptibility Culture Plate (DSCP) method) used by the Dutch Supranational Reference Laboratory at the Institute of Public Health and the Environment (RIVM), Bilthoven, Netherlands. Our experience showed that this method potentially gives better result as it can be very well standardized, faster and provides detailed MIC (Minimal Inhibitory Concentration) values. Data from 364 isolates that have been tested by DSCP method showed that resistance to INH, rifampicin, ethambutol, and streptomycin were 21.4%, 19.8%, 15.7%, and 16.5% respectively. Multidrug resistance were found in 13.2% isolates. (Med J Indones 2005; 14: 142-6)"

"Tuberculosis (TB) is one of the major infectious diseases that cause health problems worldwide. Antigen 85B is a secreted protein of the infectious strain Mycobacterium tuberculosis. Our main focus is on production of proteins as a booster vaccine to replace the traditional Mycobacterium bovis bacillus Calmetter-Guerin (BCG) vaccine formula. The main challenge is to express a high yield of an active recombinant protein in native soluble form. To the extent of our knowledge, the cultivation conditions, such as optimal temperature, for overexpressing soluble Ag85B protein of the gene Rv1886c, have never been reported. This study showed for the first time the optimizing culturing conditions for inducing expression of soluble Ag85B protein by isopropyl β-D-1-thiogalactopyranoside (IPTG) in Escherichia coli BL21 (DE3) pLysS. Protein yields were higher at a low temperature of 25 °C (for 12 h), compared to those at a high temperature of 37 °C (for 5 h). To conclude, low temperature is associated with slow expression which allows the protein to adopt a well-folded conformation and provides a high yield of soluble recombinant protein."

"Penyakit TB masih merupakan masalah kesehatan kesehatan masyarakat yang penting di Indonesia. Upaya diagnostik TB paru masih terus ditingkatkan. Pemeriksaan penunjang diagnosis TB yang sekarang digunakan masih mempunyai sensitiviti dan spesitiviti yang rendah. Tujuan penelitian mengetahui tingkat akurasi uji tuberkulin dan PCR terhadap penegakkan diagnosis TB serta hubungan uji tuberkulin dan PCR dengan BTA mikroskopis dan biakan M. Tb dalam diagnosis TB paru.Metode penelitian cross-sectional, uji diagnostik dan analisa data menggunakan Chi-Square. Kriteria inklusi penderita terdapat gejala klinik riwayat batuk 3 minggu disertai atau tanpa batuk darah, nyeri dada, sesak napas dan riwayat minum obat TB dalam jangka waktu kurang dari 1 bulan serta bukan TB (kontrol). Seluruh sampel dilakukan anamnesis, pemeriksaan fisik, lekosit, LEDI/II, foto toraks, uji tuberkulin, PCR, BTA mikroskopis 3X dan biakan M. Tb mctode kudoh. Baku emas yang digunakan biakan M. Tb metode kudoh. Data diolah menggunakan SPSS versi 11.00.Berdasar 127 sampel masuk kriteria inklusi 121. Sampel berjumlah 121 terdiri dari 61 sampel tersangka TB dan 60 sampel kontrol Sensitiviti dan spesivisiti uji tuberkulin terhadap biakakn metode Kudah menggunakan cut-off point 15,8 mm 33% dan 93%. Sensitiviti PCR terhadap biakab metode Kudoh 100%, spesitiviti PCR 78%. Didapatkan perbedaan bermakna dan hubungan lemah uji tuberkulin dengan biakan M. Tb dan PCR serta didapatkan perbedaan dan hubungan bermakna PCR dengan BTA mikroskopis biakan M. Tb.Kesimpulan basil keseluruhan penelitian mendapatkan basil 39 sampel biakan positif, 36 sampel BTA mikroskopis positif, 57 sampel PCR positif dan 18 sampel uji tuberkulin positif. Ditemukan sensitiviti basil uji tuberkulin lebih rendah daripada PCR, BTA mikroskopis dan biakan M. Tb mctode Kudoh. Meskipun terdapat perbedaan bermakna basil uji tuberkulin pada biakan positif clan negatif, BTA mikroskopis positif dan negatif, serta PCR positif dan negatif, akan tetapi uji tuberkulin (menggunakan cut-off point 15.8 mm) kurang dapat membantu penegakan diagnosis TB para. Berdasarkan hasil penelitian ditemukan bahwa diantara keempat pemeriksaan penunjang diagnosis TB paru PCR mempunyai nilai sensitivit dan spesitiviti tinggi ( 100% dan 78%). sehingga PCR dapat digunakan sebagai pemeriksaan penunjang diagnosis TB paru apabila didapatkan klinis dan radiology mendukung TB paru. Menggunkan pemeriksaan PCR akan didapatkan metode penegakan diagnosis TB paru yang cepat ( 1 hari ) dibandingkan dengan menunggu hasil biakan M. Tb hingga 8 minggu.

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Objective. In an attempt diagnosis pulmonary tuberculosis still increased continuously. Now additional examination pulmonary tuberculosis have been lack sufficient sensitivity and sensitivities. The aim of this study was to determine the validity of tuberculin skin testing (TST) and PCR toward assessment diagnosis pulmonary of tuberculosis with correlation between tuberculin skin testing to PCR with AFB microscopic and solid media culture of M. tuberculosis for the diagnosis of pulmonary tuberculosis.

Method. A cross-sectional study, diagnostic test and analysis with Chi-Square test. Inclusion criteria patient with pulmonary symptom include chronic cough 3 weeks with or without hemoptysis, chest pain, breathlessness and past history of ATA less than 1 month with non-tuberculosis patient (control). The general samples was examination Ro thorax, tuberculin skin testing, PCR, AFB microscopic and conventional culture. The golden standard is conventional culture test using Kudoh method. Analyze of the data with SPSS version 11.0.

Result. The study material comprised 121 samples from 127 samples. These samples include 61 samples from patient with probably active pulmonary tuberculosis and 60 control comprising healthy individuals. The sensitivity and specificity of tuberculin skin testing with cut-off point 15.8 mm greater was 33% and 93% on conventional culture test using Kudoh method. PCR sensitivity was 100% and spesitivity was 78%. It was showed the positivity correlation between pulmonary tuberculosis and conventional culture as well as PCR and AFB microscopic, the conventional culture test.

Conclusion. The sensitivity of tuberculin skin testing less than PCR, AFB microscopic and conventional culture test. So that not enough to assessment diagnosis pulmonary tuberculosis. The sensitivity and specificity PCR was I00% and 78%. With the use of PCR test, we were able to detect diagnosis pulmonary tuberculosis more rapidly in less than I day, compared to average 8 week required for detection by conventional culture."