Bacterial vaginosis is the commonest cause of abnormal vaginal discharge in women of reproductive age and require laboratory test for diagnosis . A total 200 women aged 15-45 years with history of abnormal vaginal discharge were included as study population. Fifty women without such history of discharge were taken as healthy control. Three vaginal swab samples were taken from each case and control. These swab samples were subjected to test by conventional methods such as Amsel clinical criteria, Gram stain Nugent method, culture and by newly developed BV Blue test. The results of the BVBlue test were compared with these methods to find out the efficacy of BVBlue test. Rate of detection of bacterial vaginosis (BV) cases was 21.5% by Amsel clinical criteria, 21.0% by Gram stain Nugent method, 21.0% by culture and 22% by BVBlue test among the study population. When comparing with the conventional test and culture, BVBlue test was 100% sensitive and 98% specific. It is rapid, technically simple and is suitable for screening large number of patient in short time where laboratory facilities are not developed. Key words: Bacterial Vaginosis, BVBlue test, Nugent method, Abnormal vaginal discharge. DOI: http://dx.doi.org/10.3329/bjmm.v4i1.8465 BJMM 2011; 4(1): 24-27

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Inducible clindamycin resistance was detemined in 200 clinical isolates of staphylococci from pus (53.5%) and wound swab (46.5%). The study was done from July 2009 to June 2010, in the Department of Microbiology, BIHS Hospital Dhaka. Inducible clindamycin resistance was demonstrated by placing an erythromycin disc (15 ìg) 15 mm apart from the edge of a clindamycin (2 ìg) disc in Mueller Hinton agar. When the clindamycin inhibited zone becomes D- shaped the organism was regarded as positive for inducible resistance (D- test positive). Out of 200 staphylococci, 20% had inducible clindamycin resistance, 5% had constitutive clindamycin resistance and remaining 75% was clindamycin sensitive. In case of methicillin resistant Staphylococcus aureus (MRSA), 48% had inducible clindamycin resistance while 11.5% was constitutively resistant to clindamycin and remainder were clindamycin sensitive. All clindamycin resistant strains were 100% sensitive to vancomycin and linezolid followed by gentamycin (42%) and tetracycline (42.3%). The findings demonstrated that a substantial proportion of staphylococci in our tertiary care hospital had inducible resistance to clindamycin.Ibrahim Med. Coll. J. 2011; 5(1): 6-8 Key words: Staphylococcus aureus; Inducible clindamycin resistance; Constitutive clindamycin resistance; D-testDOI: http://dx.doi.org/10.3329/imcj.v5i1.9853

Nowadays molecular methods are widely used in the rapid diagnosis of infectious agents. Polymerase chain reaction (PCR) is the most preferred method for this purpose. Obtaining sufficient and pure DNA or RNA is important for the PCR. Different DNA extraction protocols such as phenol-chloroform, proteinase K, glass beads and boiling have been used successfully for DNA isolation from gram-negative bacteria. However since gram-positive bacteria have a thicker layer of peptidoglycan and mycobacteria have complex glycolipids in their cell walls, for the isolation of DNA or RNA from these microorganisms, the complex cell wall structure must be eliminated. For this purpose, the bacterial cell wall must be completely or partially removed forming sferoblast using lysostaphin in the Staphylococcus genus as gram-positive bacteria and using a chemical like cetyltrimethyl ammonium bromide for the Mycobacterium genus. In this study, we planned to use sand particles for the mechanical elimination of the cell wall without any need for chemicals and we called this procedure as "sand method". For the purpose of DNA extraction, the fine-grained sand was washed with ddH(2)O without losing small particles and then sterilized by autoclaving. For the purpose of RNA extraction; the sand was washed with ddH(2)O, incubated for 30 minutes with 10% HCl, and then autoclaved. A methicillin-resistant Staphylococcus aureus (MRSA) strain previously isolated and identified from a clinical specimen was mixed in 100 µl Tris-EDTA buffer with 100 mg sand. The mixture of bacteria and sand was vortexed at the maximum speed for 5 minutes. The MRSA-sand mix was treated with proteinase K and phenol-chloroform, and ethanol precipitation protocol was then followed for obtaining DNA. For comparison of the sand method with the other methods, the same amount of bacteria used in the sand method was incubated for one hour with lysostaphin, and then the proteinase K DNA extraction method were completed in the same way used in the sand method. For obtaining RNA from M.tuberculosis H37Rv ATCC 25618, M.tuberculosis H37Ra ATCC 25177 and M.tuberculosis H37Rv Pasteur Institute RSKK 598 standard strains, bacteria were dissolved in 20 µl Tris-EDTA buffer with 100 mg sand. The mixture of bacteria and sand was vortexed at the maximum speed for 5 minutes. After that, the classic RNA extraction protocol using guanidinium thiocyanate-phenol-chloroform (GTPC) was completed. To investigate the usefulness of the obtained DNA, a PCR was performed with specific primers for staphylokinase and enterotoxin genes that were shown in the genome of the chosen MRSA strains from our previous studies. To investigate the usefulness of the obtained RNA from the sand method; first cDNA synthesis is completed. The PCR efficiency was then tested using primers specific to the efflux pump genes of M.tuberculosis including Rv1410c, Rv2333c, and DrrA genes. To compare the effect of the sand method, GTPC protocol was applied in the same amount of mycobacteria without the sand treatment. The DNA obtai...

A cross sectional study was carried out on patients with diabetic foot lesions to determine the spectrum of aerobic microbial flora and to determine the microbial pathogens of the diabetic foot lesions and their antimicrobial sensitivity pattern. A total of 226 organisms were isolated from 218 patients and polymicrobial infection was found in 3.7 % cases. Age of the study population ranged from 20 - >80 yrs of which most of the patients were from 40 to 70 yrs (81 %). Male female ratio was= 3:1. In this study, Pseudomonas sp. (22.1 %), Proteus mirabilis (16.4 %) and S. aureus (14.6 %) were the predominant organisms isolated. Antimicrobial susceptibility pattern of the isolates were done in which imipenem and ciprofloxacin were found to be the most effective against all organisms.DOI: http://dx.doi.org/10.3329/bjmm.v6i2.19372 Bangladesh J Med Microbiol 2012; 06(02): 20-23

Extended Spectrum ß-Lactamase (ESBL) acquired by bacteria is a highly effective weapon for drug resistance against a wide range of antibiotics (penicillins, cephalosporins and monobactams). ESBLs have continued to increase in variety and prevalence and are now a global health concern including Bangladesh. They are associated with failure in effective treatment, increased morbidity and mortality, poor outcomes, increases in length of stay(LOS) in hospital and health care costs. So, it is important to identify it and take necessary measures to treat with appropriate antimicrobial therapy. This study has been designed to establish an easy method for routine reporting of ESBL organisms and notify it's incidence in Health Care settings.

Bacterial vaginosis is the commonest cause of abnormal vaginal discharge in women of reproductive age. A total 200 women aged 15- 45 years with history of abnormal vaginal discharge were included as study population. Fifty women without such history of discharge were taken as healthy control. Two vaginal swab samples were taken from each case and control. These swab samples were subjected to test by Gram stain (Nugent method) and culture. 21.5 % of the cases were diagnosed as bacterial vaginosis by Gram stain (Nugent method) and 21 % by culture. Clindamycin was susceptible to G. vaginalis in (90.5%) followed by metronidazol (76.1 %), chloramphenicol (71.4 %) and erythromycin (66.7 %). Out of 50 cases of recurrent bacterial vaginosis, G. vaginalis was isolated from 15 (30 %) cases, of which 5 (33.3 %) were sensitive and 10 (66.7 %) were resistant to metronidazol, while all 15 cases were sensitive to clindamycin.DOI: http://dx.doi.org/10.3329/bjmm.v5i1.15814 Bangladesh J Med Microbiol 2011; 05 (01): 8-11

This cross-sectional, descriptive observational study was carried out for a period of 24 months from January 2014 to December 2015 in the Department of Pathology and Department of Surgery, Rajshahi Medical College, Rajshahi for estimation of serum 19-9 level in total fifty four patients. Histopathological Staging was correlated with the preoperative values of serum CA 19-9 level. Data were collected by face to face interview, clinical examination and findings of laboratory investigations. Preoperative serum CA 19-9 levels were estimated by Enzyme Linked Immunosorbent Assay (ELISA) Method. The study revealed that the colorectal carcinoma was highest in the 5th and 6th decade and rectal area (46.3%) and male predominance was observed with male to female ratio being 3:2. A higher incidence of abnormal CA 19-9 level was found in Dukes’ D (100%) and Dukes’ C (84%) diseases than in Dukes’ B (76%) and Dukes’ A (75%) stages. The sensitivity of CA 19-9 in correctly detecting advanced stage CRC carcinoma from those who had early stage of the disease is (36/44) × 100 = 81.8% and its specificity in correctly excluding those who did not have advanced disease is (2/10) × 100 = 20%. The overall diagnostic accuracy is calculated to be (36 + 2)/54 = 70.37%. Regarding diagnostic values for colorectal carcinoma elevated level of serum CA 19-9 can be considered as an important diagnostic tool for differentiating advanced stage of colorectal carcinoma from its early stage TAJ 2020; 33(1): 35-40