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Articles by M. Rahman
Total Records ( 12 ) for M. Rahman
  M. Rahman , M.F. Tazim , S.C. Dey , A.K.M.S. Azam and M.R. Islam
  The study was conducted to investigate the alternative livelihood opportunities available and accessible to the fishermen community of Nijhum Dwip under Hatiya Upazila of Noakhali district in Bangladesh. Primary data were collected through household survey using PRA tools such as Focus Group Discussion (FGD) and Crosscheck Interviews (CI) with key informants. The fishers were classified as boat owner-fisher (8%), laborer fisher (60%), fishers engaged in fish drying (18%) and others involved in fishing related occupations (14%). In recent time, fishers’ household income was limited as the highest number (46%) of the fishers’ annual income ranged between 50,000 and 75,000 BDT and the fish resources was decreasing for that supplementary income from other than fishery was of great importance. The most common Alternative Livelihood Generating Activities (ALGAs) identified by the fishers were: poultry (22%), livestock (21%), crop farming (19%), boatman (13%), non-farm day laborer (9%), small business (6%), handicraft/swing (5%), crab catching and fish farming (1%) and others (3%). Depending on high potential to increase income and high potential to increase market demand, a matrix of relative attractiveness of existing livelihood activities and alternative livelihood activities was developed.
  M. Asaduzzaman , M.A. Bari , M. Rahman , M. Minami , K. Matsushima and K. Nemoto
  Agrobacterium mediated transformation has already been reported in rice but under the present investigation efforts has been made to establish the transformation protocol in Bangladeshi rice variety BRRI dhan-30. High percentage of callus induction at 97.3% was obtained when seeds of rice (Oryza sativa L.) cv. BRRI dhan-30 were cultured on modified N6 medium supplemented with 3% sucrose, 2.0 mg L-1 2, 4-D and 0.8% agar under dark condition. Maximum  88.28%  calli  induced  shoots  and  were  obtained from BRRI dhan-30 in the suitable regeneration medium was MS medium supplemented with 3% (w/v) sucrose, 2.0 mg L-1 BAP+0.05 mg L-1 NAA+3% sorbitol and 0.8% agar. Agrobacterium mediated gene transfer protocol for rice variety BRRI dhan-30 were performed using Agrobacterium tumefaciens strain LBA4404, which harbored the plasmid pCL3 containing genes for β-glucuronidase (GUS) and kanamycin resistance. It was found that kanamycin concentration up 50 μg mL-1 were effective for selection of transformants. Putatives transformants as  indicated  by  kanamycin  test  were  subjected  to GUS assay. GUS activities were found in rice calli after co-cultivation.
  M. Rahman , R. K. Simmons , S. H. Hennings , N. J. Wareham and S. J. Griffin
  Aims  There is continuing uncertainty regarding the overall net benefits of population-based screening for Type 2 diabetes. We compared clinical measures, prescribed medication, cardiovascular morbidity and self-rated health in individuals without diabetes in a screened vs. an unscreened population.

Methods  A parallel-group, cohort study of people aged 40-65 years, free of known diabetes, identified from the population register of a general practice in Ely, Cambridgeshire (n = 4936). In 1990-1992, one third (n = 1705), selected randomly, received an invitation for screening for diabetes and cardiovascular risk factors at 5-yearly intervals (screened population). From the remainder of the sampling frame, 1705 randomly selected individuals were invited to diabetes screening 10 years later (unscreened population). Patients without known diabetes from both populations were invited for a health assessment.

Results  Of 3390 eligible individuals without diabetes, 1442 (43%) attended for health assessment, with no significant difference in attendance between groups. Thirteen years after the commencement of screening, self-rated functional health status and health utility were identical between the screened and unscreened populations. Clinical measures, self-reported medication and cardiovascular morbidity were similar between the two groups.

Conclusions  Screening for diabetes is not associated with long-term harms at the population level. However, screening has limited long-term impact on those testing negative; benefits may largely be restricted to those whose diabetes is detected early through screening.

  M. Rahman , M. Rahman , M.M. Rahman , A. Koddus and G.U. Ahmad
  In this research, soil-to-plant Transfer Factor (TF) for radiocesium has been measured by field experiment. Soil and grassy plant grown in a contaminated land containing radiocesium in the Atomic Energy Research Establishment (AERE) campus, Savar, Dhaka were collected to investigate the transfer of radiocesium in the soil-plant system. The activities of radiocesium in soil and grassy plant were measured using High Purity Germanium (HPGe) detector coupled with associated accessories. Using the measured activities, TF values were found within the range of 2.7H10•2 to 4.7H10•2, which are reasonably comparable with the values found in the literature. Soil characteristics were also investigated to assist the measured TF values for the corresponding soil. This data set might be useful while calculating radiological human dose via the ingestion pathway in the tropical environment.
  Mst. M. Begum , M.S. Rahman , R.R. Swarna , M. Das , A.H.M.R. Imon , I. Jahan , M. Rahman , Md. E. Haque , R.R. Saha , A.H.M. Quamruzzaman , Md. A. Obaida , M. Maniruzzaman , A. Islam , Md. T. Islam and A. Sarker
  Background and Objective: Combination of dosages regimen of an antidiabetic agent (Glibenclamide) with a lipid lowering drug can be an effective medication for the patient with high blood glucose level and liver enzyme disfunctionality. The present study was undertaken to investigate the effect of a fixed dose combination of glibenclamide (1.2 mg/70 kg b.wt.) and simvastatin (10 mg/70 kg b.wt.) on blood glucose and liver enzymes dysfuntionality in alloxan-induced diabetic rats for an extended time period. Materials and Methods: Two protocols were developed to carry out the experiment. The first is designated as 4 weeks short-term and second one is termed as 12 weeks long-term treatment protocols, respectively. Diabetes Mellitus (DM) was induced by single intraperitoneal (i.p.) injection of freshly prepared alloxan solution in 0.9% saline. Diabetic rats received treatment with i.p., injection of glibenclamide (1.2 mg/70 kg b.wt.) and simvastatin (10 mg/70 kg b.wt.) for 4 weeks as monotherapy and combination therapy (glibenclamide 0.6 mg/70 kg b.wt., simvastatin 5 mg/70 kg b.wt.) for 12 weeks. Graph pad was used and the results were expressed as Mean±SEM. A one-way analysis of variance (ANOVA) followed by Dunnett’s post hoc test or students paired or unpaired t-test was used in the study where appropriate. Results: Results were considered to be significant when p-values were less than 0.05 (p<0.05). Combination therapy demonstrated a significant (p<0.05) decrease in blood glucose and liver enzymes elevation compared with diabetic control group. The study also demonstrated that the short term treatment has satisfactory effect on lowering SGPT by 41% and SGOT by 50%. Long term administration of combination therapy showed more significant (p<0.05) potentiality on lowering SGPT (46%) and SGOT (53%), respectively and this level remain steady during total treatment period. Conclusion: The present study demonstrates that combination of glibenclamide with simvastatin at the dose level tested exhibits significant glucose and liver enzymes lowering activity in alloxan induced diabetic rats. When monotherapy with oral antidiabetic agents fails, combination therapy with glibenclamide plus simvastatin seems to be stable and effective for the treatment of diabetes mellitus.
  M.J. Hossa in , M. Rahman and M.A. Bari
  The aim of this study to show, an efficient protocol for establishment of cell suspension culture and plantlet regeneration through cell culture from the cotyledonary explants of Brinjal (Solanum melongena L.). In this investigation, three varieties of Brinjal cv. Loda, China and Jhotika were used. In first step, the somatic embryogenic calli formation was done using MS medium supplemented with different concentrations of auxin and cytokinin singly or in combination. Cells of the three varieties were isolated from the rapidly growing embryogenic and friable calli using orbital shaker. For callus induction the isolated cells were transferred to MS liquid medium containing different hormonal concentrations and after 37-63 days of incubation the micro-calli were appeared. The Loda and China varieties showed the best result (8.0 and 8.2%, respectively) in 2 mg L-1 NAA+0.05 mg L-1 BAP and 2 mg L-1 2,4-D+0.05 mg L-1 BAP. For embryo formation, micro-calli were subcultured on MS solid medium and the Loda variety showed the best result (21%) in the medium containing 1.0 mg L-1 BAP+0.05 mg L-1 GA3. The bipolar embryos were selected and cultured in MS medium with different combinations and concentrations of auxin (NAA) and cytokinin (BAP and IBA) for shoot and root formation. Optimum shoot and root formations were recorded in MS medium supplemented with 0.75 mg L-1 NAA+1.5 mg L-1 BAP and 2.0 mg L-1 NAA+0.5 mg L-1 IBA, respectively. The plantlets appeared in the embryo mass were cultured and acclimatized.
  A.K.M.N. Huda , M. Rahman and M.A. Bari
  This study describes the investigation on the synthetic seed technology in two varieties (Loda and China) of eggplant with a particular focus on the carbon source in seed bead. To assess exact type and concentration of carbon source, three types of carbon sources (viz., sucrose, mannitol and sorbitol) and their different concentrations were used in alginate seed bead to achieve the optimum germination of synthetic seed on MS0. Among the different carbon sources, sucrose showed better performance for both varieties when nodal segment with bud was used as explants. But when somatic embryos were used as explants sucrose + sorbitol (1:1) was found to be more efficient for both varieties in germination of synthetic seeds. On the other hand, among the different concentrations 1% sucrose gave good result for the germination of synthetic seed made of nodal segment. In case of somatic embryo 3% sucrose showed best performance for both varieties.
  Surjya Sarathi Bhattacharyya , M. Rahman , A. Mukherjee , B. K. Chaudhuri and S. L. Wu
  The temperature- and electric field-dependent dielectric relaxation and polarisation of a new chiral swallow tailed antiferroelectric liquid crystal, i.e. 1-ethylpropyl (S)-2-lcub6-[4-(4`-decyloxyphenyl)benzoyloxy]-2-naphthylrcubpropionate (abbreviated as EP10PBNP), were investigated. The electric field-induced dielectric loss spectra of EP10PBNP revealed electroclinic and anomalous dielectric behaviour in the chiral smectic A (SmA*)-chiral antiferroelectric smectic C (SmCA*) pre-transitional regime. From an analysis of thermal hysteresis of the dielectric constant, electric field-induced polarisation and dielectric loss spectra, the appearance of a ferrielectric-like mesophase is observed followed by an unstable SmCA* phase in the SmA*-SmCA* pre-transitional regime.
  M. Rahman , S. Khatun , M.B. Hossain , M.N. Hassan and A.A.K.M. Nowsad
  The present study was designed to know the landing and distribution pathways of fish and types and nature of stakeholders involved in fish distribution chain in Bangladesh. A total of 237 fish landing centers and 5440 markets were detected. The number of landing center and market were highest in Chittagong and Dhaka division respectively. Stakeholders in fish distribution, viz., arotdars, paikers and retailers were found to be 6219, 39506 and 122922, respectively. A 84.71% of the landing centers were found to be operated year round while 15.29% were seasonal. The major fish production zones and major gateways of the country where inland capture and culture and marine capture fish landed were identified. In any locality 62.83% of the landed fish were transported within 100 km area and 5.73% of fish were transported beyond 500 km. The quantity of fish harvested from river, beel, Kaptai lake floodplain, pond, baor, coastal area/sea and shrimp/prawn farm were 5.25, 4.41, 0.13, 35.03, 38.22, 0.23, 10.93 and 5.80%, respectively. The common constraints identified were lack of adequate infrastructure facilities in the landing center and market, unhygienic environment, influence of middlemen, money lending at high rate etc. For the betterment of fish landing and distribution, appropriate authority should pay proper attention so that both quality and fair price are ensured.
  M. Asad-ud-doullah , M.K. Anam , Md. Nazrul Islam , M. Rahman , G.A. Fakir and I. Hossain
  Six treatments viz. farmer’s seed (uncleaned and unwashed), farmer’s clean seed, farmer’s washed seed, farmer’s clean and washed seed, garlic (1:10) and Vitavex-200 @ 0.3% treated seeds were used for studying their comparative effect on incidence of seedling diseases and grain yield of rice. Seed cleaning followed by washing decreased the seedling diseases viz. brown spot, blast, bakanae, foot rot and seedling blight as of seed treatment with garlic and Vitavex-200. Use of healthy seedling increased the grain yield up to 21.4% over the use of seedling as farmer’s normally use. Use of healthy seedlings has increased the benefit of Tk.4132.28 ha–1 over the use of normal seedling as farmers normally use.
  A.K.M.N. Huda , M.A. Bari , M. Rahman and N. Nahar
  This research programme was undertaken with a view to develop an efficient and reliable method of indirect regeneration through somatic embryogenesis in two varieties of eggplant through the technique of tissue culture. For this purpose, cotyledon pairs of Solanum melongena were used as explants for callus induction. Three different auxins (NAA, 2, 4-D and IAA) were used singly or in combination with BAP for present investigation, as types, concentrations and combinations of growth regulators had marked influence on callus induction. Auxin/cytokinin combinations were proved more potent for callus induction as well as callus growth than that of auxin tried singly in the media. Best callus formation was observed in MS media when supplemented with 0.05 mg L-1 BAP + 2.0 mg L-1 NAA. Best calli from cotyledonary explant were subcultured on MS supplemented with different combinations and concentrations of phytohormones for somatic embryogenesis. Among the different combinations and concentrations 0.05 mg L-1 BAP + 2.0 mg L-1 NAA gave the best result on somatic embryogenesis for Loda variety. On the other hand, somatic embryos of China variety were obtained only on the media having 1.0 mg L-1 BAP + 0.05 mg L-1 GA3. The global structure somatic embryos originated from the superficial layers of the calli, as a single structure or in a cluster. These structures could be isolated easily from parent tissues because they were floated freely in water. These floated free embryos were cultured on nutrient media again to obserb shoot primordia development and thereafter shoot development.
  N. Haque , U. Salma , A.K.M.F. Haque , I.J. Mukti , M. Rahman , J. Jesmin and S.H. Mazumdar
  Cardio Vascular Disease (CVD) is the number one killer and leading cause of disability among women in most of the developed countries. Several epidemiological studies indicate that women during the fertile age have a lower risk of cardiac events and the female hormone estrogen provides this natural protection. Usually, the protection fades after menopause and this risk increases gradually in the five to ten years after the female hormone estrogen begins to dwindle. Hence, postmenopausal women leaving with untreated risk factors make them vulnerable to develop myocardial infarction, heart failure and sudden cardiac death. In addition, several recently published articles have shown the effect of stress on cardiovascular system and in pathogenesis of myocardial infarction and myocardial ischemia. Moreover, the effect of stress on estrogen level has also been supported by some recently published articles. For these reasons, in this review the possible links among stress, estrogen and CVD in women have been described.
 
 
 
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