mahmud hasan - Academia.edu (original) (raw)

Papers by mahmud hasan

Research paper thumbnail of Self – Medication of Anti-microbial Agents (AMAs) and Over-the-Counter Practices: A Study in Mymensingh Sadar Area

Community Based Medical Journal, 2013

Research paper thumbnail of Optimum harvest for sustainable yield of fish live food tubificid worms

Dhaka University Journal of Biological Sciences, 2011

The Optimum harvest suitable for sustainable yield of tubificid worms without affecting the futur... more The Optimum harvest suitable for sustainable yield of tubificid worms without affecting the future yield for a period of 60 days was determined. The media ingredients used to culture the worms were 20% wheat bran, 30% soybean meal, 20% mustard oil cake, 20% cow dung and 10% sand. A harvest level of 50 mg/cm 2 (maximum yield; 518.93 ± 14.36 mg/cm 2 ) at ten days interval starting from 30 days of worms' inoculation was found suitable for sustainable yield in the later sampling durations. Results of this study have implications in increasing fish yield by producing reliable and sustainable yield of fish live foods tubificid worms.

Research paper thumbnail of Ultrasound elastography applications

Community Based Medical Journal, 2013

Research paper thumbnail of Bacterial load in twelve freshwater fishes of four feeding habits in Bangladesh

Dhaka University Journal of Biological Sciences, 2011

... M. SHAMSUR RAHMAN1, MAHMUD HASAN1, ZAHID HAYAT MAHMUD AND M. SIRAJUL ISLAM* ... The fishes we... more ... M. SHAMSUR RAHMAN1, MAHMUD HASAN1, ZAHID HAYAT MAHMUD AND M. SIRAJUL ISLAM* ... The fishes were identified and grouped following Kumar(6), Rahman(7), Shafi and Quddus(8), Mustafa et al.(9) and Nargis and Hossain.(10) The samples ... 7. Rahman AKM 2005 ...

Research paper thumbnail of Haematological Profile Of Thai And Indigenous Male And Female Air Breathing Climbing Perch

Dhaka University Journal of Biological Sciences, 2012

Research paper thumbnail of Harelquin fetus: a rare presentation

Community Based Medical Journal, 2013

Research paper thumbnail of Detection of hepatitis E virus RNA and genotype in Bangladesh

Journal of Gastroenterology and Hepatology, 2009

Hepatitis E virus (HEV) in Bangladesh has not been adequately documented. We report HEV RNA and g... more Hepatitis E virus (HEV) in Bangladesh has not been adequately documented. We report HEV RNA and genotype detection in Bangladesh. In total, 82 samples were used; 36 sporadic acute hepatitis (AH), 12 fulminant hepatitis (FH), 14 chronic liver disease (CLD) and 20 from an apparently healthy population (HP) positive for both immunoglobulin (Ig) M and IgG specific anti-HEV antibodies (anti-HEV). The male/female ratio was 61/21, ages 12-67 (mean 30.4) years. RNA was extracted, transcribed to cDNA and amplified in nt 6345-6490 (ORF2) of HEV. Nucleic and amino acid sequences were determined. Homology comparison between Bangladesh clones and other representative HEV clones and phylogenetic tree analyses were done. Relations between HEV RNA-positivity and clinical factors were analyzed. HEV RNA was positive in 9/36 (25.0%) of AH cases, 4/12 (33.3%) FH, 3/14 (21.4%) CLD and 0/20 (0%) HP samples; total 16/82 (19.5%). Four factors correlated significantly with HEV RNA-positivity (Mann-Whitney U test); alanine aminotransferase (ALT) (P = 0.0229), aspartate aminotransferase (AST) (P = 0.0448), and titers of IgG (P = 0.0208) and IgM (P = 0.0095) specific anti-HEV. The 16 HEV clones were divided mainly into two groups, A and B, including six different cDNA sub-groups. HEV RNA was found in sporadic AH and FH and sub-clinical CLD cases, but not in HP. HEV RNA-positivity was significantly related to values of ALT and AST and titers of IgG and IgM specific anti-HEV, with IgM specific anti-HEV showing the most significant relationship. All clones were genotype I, which is prevalent in South Asia.

Research paper thumbnail of Long-Term Re-Infection Rate after <i>Helicobacter pylori</i> Eradication in Bangladeshi Adults

Digestion, 2007

Bangladesh is a developing country with a very high prevalence of Helicobacter pylori infection, ... more Bangladesh is a developing country with a very high prevalence of Helicobacter pylori infection, which has been ascribed to overcrowding and poor sanitary conditions. It has generally been accepted that the re-infection rate is higher in countries with a high prevalence of H. pylori infection. Short-term follow-up studies support this assumption but no long-term studies are available to confirm or refute this assertion. The present study was aimed to define the long-term H. pylori re-infection rate (6 years after successful eradication) in duodenal ulcer patients. In a previous study, 90 patients were successfully eradicated for H. pylori and followed-up for 24 months. 17/90 were found to be re-infected (18% re-infection rate per year in the first 12 months) [Gastroenterology 2001;792-798]. The remaining 73 patients were targeted for long-term follow-up. 26/73 were lost to follow-up; 6 symptomatic patients were tested H. pylori positive in the period between 24 and 60 months post-eradication. The remaining 41 patients were evaluated 72 months after successful eradication. The evaluation included clinical history taking, a (13)C-urea breath test (UBT), and endoscopy. Of the 41 H. pylori-eradicated patients analyzed after 72 months, 16 were H. pylori-positive. If the 6 patients, who were tested positive between 24 and 60 months, are added, the total re-infection cases amount to 22 subjects in the period between 24 and 72 months. Therefore, an overall annual re-infection rate 6 years after eradication of 5.02% can be calculated. Six of the 23 symptomatic patients had duodenal ulcer relapse, 5/6 were H. pylori re-infected and one was H. pylori-negative at 72 months post-treatment. The long-term annual H. pylori re-infection rate in Bangladeshi adults is markedly higher than in Western countries but lower than anticipated. In this study, duodenal ulcer relapse is clearly related to H. pylori re-infection.

Research paper thumbnail of Irritable Bowel Syndrome In a Rural Community In Bangladesh: Prevalence, Symptoms Pattern, and Health Care Seeking Behavior

The American journal of …, 2001

A response of 95.4% yielded 2426 questionnaires for analysis. Mean age of the surveyed sample was... more A response of 95.4% yielded 2426 questionnaires for analysis. Mean age of the surveyed sample was 32.3 ± 14.2 yr. In total, 1113 (45.9%) were men, and 1313 (54.1%) were women. Farmers and housewives comprised 2058 (84.8%) persons. The apparent prevalence of IBS was ...

Research paper thumbnail of Self – Medication of Anti-microbial Agents (AMAs) and Over-the-Counter Practices: A Study in Mymensingh Sadar Area

Community Based Medical Journal, 2013

Research paper thumbnail of Optimum harvest for sustainable yield of fish live food tubificid worms

Dhaka University Journal of Biological Sciences, 2011

The Optimum harvest suitable for sustainable yield of tubificid worms without affecting the futur... more The Optimum harvest suitable for sustainable yield of tubificid worms without affecting the future yield for a period of 60 days was determined. The media ingredients used to culture the worms were 20% wheat bran, 30% soybean meal, 20% mustard oil cake, 20% cow dung and 10% sand. A harvest level of 50 mg/cm 2 (maximum yield; 518.93 ± 14.36 mg/cm 2 ) at ten days interval starting from 30 days of worms' inoculation was found suitable for sustainable yield in the later sampling durations. Results of this study have implications in increasing fish yield by producing reliable and sustainable yield of fish live foods tubificid worms.

Research paper thumbnail of Ultrasound elastography applications

Community Based Medical Journal, 2013

Research paper thumbnail of Bacterial load in twelve freshwater fishes of four feeding habits in Bangladesh

Dhaka University Journal of Biological Sciences, 2011

... M. SHAMSUR RAHMAN1, MAHMUD HASAN1, ZAHID HAYAT MAHMUD AND M. SIRAJUL ISLAM* ... The fishes we... more ... M. SHAMSUR RAHMAN1, MAHMUD HASAN1, ZAHID HAYAT MAHMUD AND M. SIRAJUL ISLAM* ... The fishes were identified and grouped following Kumar(6), Rahman(7), Shafi and Quddus(8), Mustafa et al.(9) and Nargis and Hossain.(10) The samples ... 7. Rahman AKM 2005 ...

Research paper thumbnail of Haematological Profile Of Thai And Indigenous Male And Female Air Breathing Climbing Perch

Dhaka University Journal of Biological Sciences, 2012

Research paper thumbnail of Harelquin fetus: a rare presentation

Community Based Medical Journal, 2013

Research paper thumbnail of Detection of hepatitis E virus RNA and genotype in Bangladesh

Journal of Gastroenterology and Hepatology, 2009

Hepatitis E virus (HEV) in Bangladesh has not been adequately documented. We report HEV RNA and g... more Hepatitis E virus (HEV) in Bangladesh has not been adequately documented. We report HEV RNA and genotype detection in Bangladesh. In total, 82 samples were used; 36 sporadic acute hepatitis (AH), 12 fulminant hepatitis (FH), 14 chronic liver disease (CLD) and 20 from an apparently healthy population (HP) positive for both immunoglobulin (Ig) M and IgG specific anti-HEV antibodies (anti-HEV). The male/female ratio was 61/21, ages 12-67 (mean 30.4) years. RNA was extracted, transcribed to cDNA and amplified in nt 6345-6490 (ORF2) of HEV. Nucleic and amino acid sequences were determined. Homology comparison between Bangladesh clones and other representative HEV clones and phylogenetic tree analyses were done. Relations between HEV RNA-positivity and clinical factors were analyzed. HEV RNA was positive in 9/36 (25.0%) of AH cases, 4/12 (33.3%) FH, 3/14 (21.4%) CLD and 0/20 (0%) HP samples; total 16/82 (19.5%). Four factors correlated significantly with HEV RNA-positivity (Mann-Whitney U test); alanine aminotransferase (ALT) (P = 0.0229), aspartate aminotransferase (AST) (P = 0.0448), and titers of IgG (P = 0.0208) and IgM (P = 0.0095) specific anti-HEV. The 16 HEV clones were divided mainly into two groups, A and B, including six different cDNA sub-groups. HEV RNA was found in sporadic AH and FH and sub-clinical CLD cases, but not in HP. HEV RNA-positivity was significantly related to values of ALT and AST and titers of IgG and IgM specific anti-HEV, with IgM specific anti-HEV showing the most significant relationship. All clones were genotype I, which is prevalent in South Asia.

Research paper thumbnail of Long-Term Re-Infection Rate after <i>Helicobacter pylori</i> Eradication in Bangladeshi Adults

Digestion, 2007

Bangladesh is a developing country with a very high prevalence of Helicobacter pylori infection, ... more Bangladesh is a developing country with a very high prevalence of Helicobacter pylori infection, which has been ascribed to overcrowding and poor sanitary conditions. It has generally been accepted that the re-infection rate is higher in countries with a high prevalence of H. pylori infection. Short-term follow-up studies support this assumption but no long-term studies are available to confirm or refute this assertion. The present study was aimed to define the long-term H. pylori re-infection rate (6 years after successful eradication) in duodenal ulcer patients. In a previous study, 90 patients were successfully eradicated for H. pylori and followed-up for 24 months. 17/90 were found to be re-infected (18% re-infection rate per year in the first 12 months) [Gastroenterology 2001;792-798]. The remaining 73 patients were targeted for long-term follow-up. 26/73 were lost to follow-up; 6 symptomatic patients were tested H. pylori positive in the period between 24 and 60 months post-eradication. The remaining 41 patients were evaluated 72 months after successful eradication. The evaluation included clinical history taking, a (13)C-urea breath test (UBT), and endoscopy. Of the 41 H. pylori-eradicated patients analyzed after 72 months, 16 were H. pylori-positive. If the 6 patients, who were tested positive between 24 and 60 months, are added, the total re-infection cases amount to 22 subjects in the period between 24 and 72 months. Therefore, an overall annual re-infection rate 6 years after eradication of 5.02% can be calculated. Six of the 23 symptomatic patients had duodenal ulcer relapse, 5/6 were H. pylori re-infected and one was H. pylori-negative at 72 months post-treatment. The long-term annual H. pylori re-infection rate in Bangladeshi adults is markedly higher than in Western countries but lower than anticipated. In this study, duodenal ulcer relapse is clearly related to H. pylori re-infection.

Research paper thumbnail of Irritable Bowel Syndrome In a Rural Community In Bangladesh: Prevalence, Symptoms Pattern, and Health Care Seeking Behavior

The American journal of …, 2001

A response of 95.4% yielded 2426 questionnaires for analysis. Mean age of the surveyed sample was... more A response of 95.4% yielded 2426 questionnaires for analysis. Mean age of the surveyed sample was 32.3 ± 14.2 yr. In total, 1113 (45.9%) were men, and 1313 (54.1%) were women. Farmers and housewives comprised 2058 (84.8%) persons. The apparent prevalence of IBS was ...