37 results on '"Jahangir Alam"'
Search Results
2. ‘BARI Masur‐8’: A high‐yielding and biofortified lentil cultivar in Bangladesh
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Md Shahin Uz Zaman, Md Altaf Hossain, Md Jahangir Alam, AKM Mahbubul Alam, Md Omar Ali, Debasish Sarker, and Ashutosh Sarker
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Genetics ,Agronomy and Crop Science - Published
- 2022
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3. Group method analysis for blood‐Mn‐ZnFe 2 O 4 flow and heat transfer under ferrohydrodynamics through a stretched cylinder
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Jahangir Alam, Md. Ghulam Murtaza, Efstratios Em. Tzirtzilakis, and Mohammad Ferdows
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General Mathematics ,General Engineering - Published
- 2022
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4. A Mouse Model of MC903‐Induced Atopic Dermatitis
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Md Jahangir Alam, Liang Xie, Yu‐Anne Yap, and Remy Robert
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Medical Laboratory Technology ,General Immunology and Microbiology ,General Neuroscience ,Health Informatics ,General Pharmacology, Toxicology and Pharmaceutics ,General Biochemistry, Genetics and Molecular Biology - Published
- 2023
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5. Tree species that ‘live slow, die older’ enhance tropical peat swamp restoration: Evidence from a systematic review
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Stuart W. Smith, Nur Estya Binte Rahman, Mark E. Harrison, Satomi Shiodera, Wim Giesen, Maija Lampela, David A. Wardle, Kwek Yan Chong, Agusti Randi, Lahiru S. Wijedasa, Pei Yun Teo, Yuti A. Fatimah, Nam Thian Teng, Joanne K. Q. Yeo, Md Jahangir Alam, Pau Brugues Sintes, Taryono Darusman, Laura L. B. Graham, Daniel Refly Katoppo, Katsumi Kojima, Kitso Kusin, Dwi Puji Lestari, Faizah Metali, Helen C. Morrogh‐Bernard, Marlide B. Nahor, Richard R. P. Napitupulu, Darmae Nasir, Tapan Kumar Nath, Reuben Nilus, Mariko Norisada, Dony Rachmanadi, Henti H. Rachmat, Bernat Ripoll Capilla, Salahuddin, Purwanto B. Santosa, Rahayu S. Sukri, Benjamin Tay, Wardah Tuah, Béatrice M. M. Wedeux, Takashi Yamanoshita, Elisa Yukie Yokoyama, Tri Wira Yuwati, Janice S. H. Lee, Smith, SW [0000-0001-9396-6610], Rahman, NEB [0000-0002-6274-1205], Harrison, ME [0000-0002-0729-8407], Shiodera, S [0000-0002-6849-8568], Giesen, W [0000-0003-2579-6706], Lampela, M [0000-0002-6635-1394], Wardle, DA [0000-0002-0476-7335], Chong, KY [0000-0003-4754-8957], Randi, A [0000-0002-4262-2604], Wijedasa, LS [0000-0001-5030-6962], Fatimah, YA [0000-0002-6807-8184], Teng, NT [0000-0003-3958-1108], Metali, F [0000-0002-2508-1535], Nath, TK [0000-0001-6436-1778], Rachmanadi, D [0000-0002-9456-5357], Rachmat, HH [0000-0003-4586-6820], Santosa, PB [0000-0002-9347-9991], Sukri, RS [0000-0002-2662-399X], Wedeux, BMM [0000-0003-1890-6778], Yuwati, TW [0000-0002-8477-0795], Lee, JSH [0000-0001-6368-6212], Apollo - University of Cambridge Repository, Asian School of the Environment, Singapore-ETH Centre, Department of Forest Sciences, and University of Helsinki
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NATURAL REGENERATION ,REFORESTATION ,Ecology ,weeding ,WOOD DENSITY ,native species ,fires ,CENTRAL KALIMANTAN ,Geography [Social sciences] ,mounding ,Fires ,FOREST RESTORATION ,oceanic Nino index ,FUNCTIONAL TRAITS ,PEATLANDS ,1181 Ecology, evolutionary biology ,GROWTH ,Drainage ,tropical peatland ,METAANALYSES ,revegetation ,drainage ,palms ,kerapah - Abstract
Funder: Arcus Foundation; Id: http://dx.doi.org/10.13039/100016681, Funder: Darwin Initiative, Funder: European Association of Zoos and Aquaria; Id: http://dx.doi.org/10.13039/501100009167, Funder: European Outdoor Conservation Association; Id: http://dx.doi.org/10.13039/501100013711, Funder: Fundacion Bioparc, Funder: Ocean Parks Conservation Foundation Hong Kong, Funder: Orangutan Land Trust, Funder: Save the Orangutan, Funder: Taronga Zoo, Funder: The Orangutan Project, Funder: Ministry of Environment & Forestry, Funder: PT Rimba Makmur Utama, Degraded tropical peatlands lack tree cover and are often subject to seasonal flooding and repeated burning. These harsh environments for tree seedlings to survive and grow are therefore challenging to revegetate. Knowledge on species performance from previous plantings represents an important evidence base to help guide future tropical peat swamp forest (TPSF) restoration efforts. We conducted a systematic review of the survival and growth of tree species planted in degraded peatlands across Southeast Asia to examine (1) species differences, (2) the impact of seedling and site treatments on survival and growth and (3) the potential use of plant functional traits to predict seedling survival and growth rates. Planted seedling monitoring data were compiled through a systematic review of journal articles, conference proceedings, reports, theses and unpublished datasets. In total, 94 study‐sites were included, spanning three decades from 1988 to 2019, and including 141 indigenous peatland tree and palm species. Accounting for variable planting numbers and monitoring durations, we analysed three measures of survival and growth: (1) final survival weighted by the number of seedlings planted, (2) half‐life, that is, duration until 50% mortality and (3) relative growth rates (RGR) corrected for initial planting height of seedlings. Average final survival was 62% and half‐life was 33 months across all species, sites and treatments. Species differed significantly in survival and half‐life. Seedling and site treatments had small effects with the strongest being higher survival of mycorrhizal fungi inoculated seedlings; lower survival, half‐life and RGR when shading seedlings; and lower RGR and higher survival when fertilising seedlings. Leaf nutrient and wood density traits predicted TPSF species survival, but not half‐life and RGR. RGR and half‐life were negatively correlated, meaning that slower growing species survived for longer. Synthesis and applications. To advance tropical peat swamp reforestation requires expanding the number and replication of species planted and testing treatments by adopting control vs. treatment experimental designs. Species selection should involve slower growing species (e.g. Lophopetalum rigidum, Alstonia spatulata, Madhuca motleyana) that survive for longer and explore screening species based on functional traits associated with nutrient acquisition, flooding tolerance and recovery from fire.
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- 2022
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6. Concurrent decreases in the prevalence of wheezing and Ascaris infection among 5‐year‐old children in rural Bangladesh and their regulatory T cell immunity after the implementation of a national deworming program
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Haruko Takeuchi, Tsutomu Iwata, Masamine Jimba, Md. Jahangir Alam, Md. Alfazal Khan, Shaikh Meshbahuddin Ahmad, Sayaka Takanashi, Sultana Yeasmin, Samar Kumar Hore, and S. M. Tafsir Hasan
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lcsh:Immunologic diseases. Allergy ,Male ,Rural Population ,0301 basic medicine ,medicine.medical_specialty ,Allergy ,National Health Programs ,Immunology ,Prevalence ,deworming ,T-Lymphocytes, Regulatory ,Deworming ,03 medical and health sciences ,0302 clinical medicine ,Immunity ,Internal medicine ,Outcome Assessment, Health Care ,Epidemiology ,medicine ,Animals ,Humans ,Immunology and Allergy ,Ascaris infection ,Child ,Respiratory Sounds ,Original Research ,Asthma ,Ascariasis ,Bangladesh ,biology ,business.industry ,Ascaris ,childhood wheezing ,medicine.disease ,biology.organism_classification ,Anti-Bacterial Agents ,Pneumonia ,030104 developmental biology ,Case-Control Studies ,Child, Preschool ,Female ,lcsh:RC581-607 ,business ,Treg cells ,030215 immunology - Abstract
Introduction Epidemiological research on the prevalence of asthma and helminthic infections in various countries has led to the hypothesis that helminthic infections protect against asthma by suppressing the host's immune response. This study was conducted to elucidate whether decreased Ascaris infection following a national deworming program was associated with increased recurrent wheezing among rural Bangladeshi children and to test their anti‐inflammatory immunity. Methods This nested case‐control study was conducted from December 2015 to October 2016 in the rural service area of the International Centre for Diarrhoeal Disease Research, Bangladesh. Of the 1800 5–year old children randomly selected for the study, informed consent was obtained from the guardians of 1658 children. Data were collected using a semistructured questionnaire adopted from the International Study of Asthma and Allergies in Childhood and blood samples for the analysis of regulatory T (Treg) cell immune responses and the balance between Th1 and Th2 immunity in Ascaris infections. Results A total of 145 children were found to have wheezing, yielding a prevalence rate of 8.7%, which was significantly lower than the rate found in 2001 (16.2%, P
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- 2019
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7. Longitudinal Effects of Teriparatide or Zoledronic Acid on Bone Modeling- and Remodeling-Based Formation in the SHOTZ Study
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Jahangir Alam, Valerie A Ruff, Thomas E. Melby, David W. Dempster, Kathleen A. Taylor, and Hua Zhou
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0301 basic medicine ,Bone mineral ,medicine.medical_specialty ,Anabolism ,medicine.diagnostic_test ,business.industry ,Endocrinology, Diabetes and Metabolism ,Urology ,030209 endocrinology & metabolism ,Bone remodeling ,03 medical and health sciences ,Subcutaneous injection ,030104 developmental biology ,0302 clinical medicine ,Zoledronic acid ,Biopsy ,Teriparatide ,Medicine ,Orthopedics and Sports Medicine ,Bone formation ,business ,medicine.drug - Abstract
Previously, we reported on bone histomorphometry, biochemical markers, and bone mineral density distribution after 6 and 24 months of treatment with teriparatide (TPTD) or zoledronic acid (ZOL) in the SHOTZ study. The study included a 12-month primary study period, with treatment (TPTD 20 μg/d by subcutaneous injection or ZOL 5 mg/yr by intravenous infusion) randomized and double-blind until the month 6 biopsy (TPTD, n = 28; ZOL, n = 30 evaluable), then open-label, with an optional 12-month extension receiving the original treatment. A second biopsy (TPTD, n = 10; ZOL, n = 9) was collected from the contralateral side at month 24. Here we present data on remodeling-based bone formation (RBF), modeling-based bone formation (MBF), and overflow modeling-based bone formation (oMBF, modeling overflow adjacent to RBF sites) in the cancellous, endocortical, and periosteal envelopes. RBF was significantly greater after TPTD versus ZOL in all envelopes at 6 and 24 months, except the periosteal envelope at 24 months. MBF was significantly greater with TPTD in all envelopes at 6 months but not at 24 months. oMBF was significantly greater at 6 months in the cancellous and endocortical envelopes with TPTD, with no significant differences at 24 months. At 6 months, total bone formation surface was also significantly greater in each envelope with TPTD treatment (all p < 0.001). For within-group comparisons from 6 to 24 months, no statistically significant changes were observed in RBF, MBF, or oMBF in any envelope for either the TPTD or ZOL treatment groups. Overall, TPTD treatment was associated with greater bone formation than ZOL. Taken together the data support the view that ZOL is a traditional antiremodeling agent, wheareas TPTD is a proremodeling anabolic agent that increases bone formation, especially that associated with bone remodeling, including related overflow modeling, with substantial modeling-based bone formation early in the course of treatment. © 2017 American Society for Bone and Mineral Research.
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- 2018
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8. Remodeling- and Modeling-Based Bone Formation With Teriparatide Versus Denosumab: A Longitudinal Analysis From Baseline to 3 Months in the AVA Study
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Sudhaker D Rao, Robert R. Recker, Valerie A Ruff, Jahangir Alam, Kathleen A. Taylor, David L. Kendler, Hua Zhou, Christopher Recknor, Jacques P. Brown, John H. Krege, Robert Lindsay, David W Dempster, Thomas E. Melby, Paul D. Miller, and E. Michael Lewiecki
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0301 basic medicine ,Periosteum ,medicine.medical_specialty ,Postmenopausal women ,medicine.diagnostic_test ,Anabolism ,business.industry ,Endocrinology, Diabetes and Metabolism ,Osteoporosis ,Urology ,030209 endocrinology & metabolism ,medicine.disease ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,medicine.anatomical_structure ,Denosumab ,Biopsy ,medicine ,Teriparatide ,Orthopedics and Sports Medicine ,Bone formation ,business ,circulatory and respiratory physiology ,medicine.drug - Abstract
There has been renewed interest of late in the role of modeling-based formation (MBF) during osteoporosis therapy. Here we describe early effects of an established anabolic (teriparatide) versus antiresorptive (denosumab) agent on remodeling-based formation (RBF), MBF, and overflow MBF (oMBF) in human transiliac bone biopsies. Postmenopausal women with osteoporosis received subcutaneous teriparatide (n = 33, 20 μg/d) or denosumab (n = 36, 60 mg once/6 months), open-label for 6 months at 7 US and Canadian sites. Subjects received double fluorochrome labeling at baseline and before biopsy at 3 months. Sites of bone formation were designated as MBF if the underlying cement line was smooth, RBF if scalloped, and oMBF if formed over smooth cement lines adjacent to scalloped reversal lines. At baseline, mean RBF/bone surface (BS), MBF/BS, and oMBF/BS were similar between the teriparatide and denosumab groups in each bone envelope assessed (cancellous, endocortical, periosteal). All types of formation significantly increased from baseline in the cancellous and endocortical envelopes (differences p
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- 2017
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9. The Impact of Projected Climate Change Scenarios on Nitrogen Yield at a Regional Scale for the Contiguous United States
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Benjamin D. Bowes, Evan H. Girvetz, Jahangir Alam, and Jonathan L. Goodall
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Hydrology ,Pollution ,Watershed ,Resource (biology) ,010504 meteorology & atmospheric sciences ,Ecology ,media_common.quotation_subject ,Yield (finance) ,Climate change ,010501 environmental sciences ,01 natural sciences ,Water resources ,Nutrient pollution ,Environmental science ,Precipitation ,0105 earth and related environmental sciences ,Earth-Surface Processes ,Water Science and Technology ,media_common - Abstract
Improved understanding of the potential regional impacts of projected climatic changes on nitrogen yield is needed to inform water resources management throughout the United States (U.S.). The objective of this research is to look broadly at watersheds in the contiguous U.S. to assess the potential regional impact of changes in precipitation (P) and air temperature (T) on nitrogen yield. The SPAtially Referenced Regression On Watershed attributes model and downscaled P and T outputs from 14 general circulation models were used to explore impacts on nitrogen yield. Results of the analysis suggest that projected changes in P and T will decrease nitrogen yield for the majority of the contiguous U.S., including the watersheds of the Chesapeake Bay and Gulf of Mexico. Some regions, however, such as the Pacific Northwest and Northern California, are projected to face climatic conditions that, according to the model results, may increase nitrogen yield. Combining the projections of climate-driven changes in nitrogen yield with projected changes in watershed nitrogen inputs could help water resource managers develop regionally specific, long-term strategies to mitigate nitrogen pollution.
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- 2017
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10. Low-powered wearable motion detecting system using static electric fields
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Shane Lambert, Haitao Lu, Zane Shreve, Yi Zhan, A.K.M. Jahangir Alam Majumder, and Gokhan Sahin
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lcsh:Computer engineering. Computer hardware ,Computer Networks and Communications ,Computer science ,body single node voltage ,Real-time computing ,wearable computers ,human-in-the-loop cyber-physical systems ,Wearable computer ,test subjects ,lcsh:TK7885-7895 ,bluetooth ,sensors ,Motion (physics) ,lcsh:QA75.5-76.95 ,smart wearable internet ,Smartwatch ,Artificial Intelligence ,low-powered wearable motion detecting system ,different test scenarios ,wrist bands ,Electrical and Electronic Engineering ,Rest (physics) ,Signal processing ,human body motion ,embedded sensory iot system ,smart watches ,body sensor networks ,low-power bluetooth communication module ,smart phones ,internet of things ,things devices including such items ,Computer Science Applications ,commercial market ,Data analysis ,smart shoes ,body motion data ,lcsh:Electronic computers. Computer science ,Scenario testing ,static electric fields ,electric field sensing ,Information Systems ,Voltage - Abstract
Recently, the commercial market has seen an increase in the availability of smart wearable Internet of things (IoT) devices (wearables) including such items as: smart shoes, smart watches, wrist bands, and pendants. Many of these devices are part of the human-in-the-loop cyber-physical systems. In this research, the authors have designed and developed an embedded sensory IoT system with a low-power Bluetooth communication module to collect body single node voltage using a smartphone. Their approach for sensing the user's movement builds on work in the electric field sensing. Experimentation and verification have been conducted on a group of test subjects with different test scenarios including remaining at rest, walking, jumping, running, hand waving, eating, and bending over. They designed and developed their sensor to detect body motion data, and then used their algorithm to analyse the collected data. This study introduces the use of signal processing techniques for sensor data analytics to detect human body motion. The system can detect activity with a high degree of accuracy (∼ 87%).
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- 2019
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11. Trabecular Bone Score in Patients With Chronic Glucocorticoid Therapy-Induced Osteoporosis Treated With Alendronate or Teriparatide
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D Agnusdei, Christine Simonelli, Lynn Kohlmeier, Kathleen A. Taylor, Kelly Krohn, Edmund J. Maclaughlin, Robert Marcus, Didier Hans, Kenneth G. Saag, Jahangir Alam, and Edward S. Leib
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musculoskeletal diseases ,030203 arthritis & rheumatology ,Bone mineral ,medicine.medical_specialty ,business.industry ,Immunology ,Osteoporosis ,Urology ,030209 endocrinology & metabolism ,medicine.disease ,Surgery ,03 medical and health sciences ,Bone Density Conservation Agents ,0302 clinical medicine ,medicine.anatomical_structure ,Trabecular bone score ,Rheumatology ,Prednisone ,medicine ,Teriparatide ,Immunology and Allergy ,business ,Cancellous bone ,Glucocorticoid ,medicine.drug - Abstract
Objective To determine the effect of alendronate (ALN) and teriparatide on trabecular bone score (TBS) in patients with glucocorticoid-induced osteoporosis. Methods Patients with chronic glucocorticoid therapy–induced osteoporosis (median 7.5 mg/day prednisone equivalent for ≥90 days) were randomized to receive oral ALN 10 mg/day (n = 214) or subcutaneous teriparatide 20 μg/day (n = 214) for 36 months; 118 patients in the ALN group and 123 patients in the teriparatide group completed treatment. Dual x-ray absorptiometry (DXA) results for 53 patients receiving ALN and 56 patients receiving teriparatide who had DXA scans with adequate resolution to perform TBS analysis and completed 36 months of therapy were blindly analyzed for TBS at baseline and 3, 6, 12, 18, 24, and 36 months. Results In teriparatide-treated patients, TBS was significantly increased at 18 months compared to baseline, and by 36 months had increased 3.7% (P
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- 2016
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12. Asymmetry Price Transmission in the Deregulated Rice Markets in Bangladesh: Asymmetric Error Correction Model
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Mohammad Jahangir Alam, Guido Van Huylenbroeck, Jeroen Buysse, Ismat Ara Begum, Eric J. Wailes, and Andrew M. McKenzie
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Wholesale price index ,Economics and Econometrics ,Producer Price Index (India) ,05 social sciences ,Geography, Planning and Development ,Mid price ,Price discovery ,Asymmetric price transmission ,Microeconomics ,Reservation price ,0502 economics and business ,Econometrics ,Economics ,Animal Science and Zoology ,Price level ,050202 agricultural economics & policy ,050207 economics ,Agronomy and Crop Science ,Limit price ,Food Science - Abstract
There is a widely held belief among public consumers that rice prices are manipulated in Bangladesh. This manipulation may have led to price asymmetry in the vertical chain of Bangladesh rice markets. This paper is an attempt to investigate the existence of asymmetry between wholesale and retail rice prices in Bangladesh. Maximum likelihood estimation (MLE) based cointegration test was applied to determine long-run equilibrium relationship. We examine whether the wholesale market dominates the retail market—in terms of price discovery and price leadership—or vice versa. Finally, we analyze whether the wholesale-retail price relationship is asymmetric with respect to price increases and price decreases. To test the asymmetric price transmission we used the asymmetric error correction-EG approach. Our results show that wholesale and retail prices are cointegrated, and wholesale market plays a leadership role in determining retail prices, which is in line with industrial organization theory. Our results confirm the fear and concerns of consumers about the existence of price asymmetry. [JEL Classification: Q110; Q113].
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- 2016
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13. Differential Effects of Teriparatide and Zoledronic Acid on Bone Mineralization Density Distribution at 6 and 24 Months in the SHOTZ Study
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Barbara M. Misof, Jahangir Alam, David W. Dempster, Eleftherios P. Paschalis, Paul Roschger, Kathleen A. Taylor, Hua Zhou, Klaus Klaushofer, and Valerie A Ruff
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0301 basic medicine ,Bone mineral ,medicine.medical_specialty ,Bone density ,business.industry ,Endocrinology, Diabetes and Metabolism ,Osteoporosis ,Urology ,030209 endocrinology & metabolism ,medicine.disease ,Surgery ,Bone remodeling ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,medicine.anatomical_structure ,Zoledronic acid ,medicine ,Teriparatide ,Orthopedics and Sports Medicine ,Cortical bone ,business ,Cancellous bone ,medicine.drug - Abstract
The Skeletal Histomorphometry in Patients on Teriparatide or Zoledronic Acid Therapy (SHOTZ) study assessed the progressive effects of teriparatide (TPTD) and zoledronic acid (ZOL) on bone remodeling and material properties in postmenopausal women with osteoporosis. Previously, we reported that biochemical and histomorphometric bone formation indices were significantly higher in patients receiving TPTD versus ZOL. Here we report bone mineralization density distribution (BMDD) results based on quantitative backscattered electron imaging (qBEI). The 12-month primary study was randomized and double blind until the month 6 biopsy, then open label. Patients (TPTD, n = 28; ZOL, n = 31) were then eligible to enter a 12-month open-label extension with their original treatment: TPTD 20 μg/d (subcutaneous injection) or ZOL 5 mg/yr (intravenous infusion). A second biopsy was collected from the contralateral side at month 24 (TPTD, n = 10; ZOL, n = 10). In cancellous bone, ZOL treatment was associated at 6 and 24 months with significantly higher average degree of mineralization (CaMEAN, +2.2%, p = 0.018; +3.9%, p = 0.009, respectively) and with lower percentage of low mineralized areas (CaLOW , -34.6%, p = 0.029; -33.7%, p = 0.025, respectively) and heterogeneity of mineralization CaWIDTH (-12.3%, p = 0.003; -9.9%, p = 0.012, respectively), indicating higher mineralization density and more homogeneous mineral content versus TPTD. Within the ZOL group, significant changes were found in all parameters from month 6 to 24, indicating a progressive increase in mineralization density. In sharp contrast, mineralization density did not increase over time with TPTD, reflecting ongoing deposition of new bone. Similar results were observed in cortical bone. In this study, TPTD stimulated new bone formation, producing a mineralized bone matrix that remained relatively heterogeneous with a stable mean mineral content. ZOL slowed bone turnover and prolonged secondary mineralization, producing a progressively more homogeneous and highly mineralized bone matrix. Although both TPTD and ZOL increase clinical measures of bone mineral density (BMD), this study shows that the underlying mechanisms of the BMD increases are fundamentally different. © 2016 American Society for Bone and Mineral Research.
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- 2016
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14. A Longitudinal Study of Skeletal Histomorphometry at 6 and 24 Months Across Four Bone Envelopes in Postmenopausal Women With Osteoporosis Receiving Teriparatide or Zoledronic Acid in the SHOTZ Trial
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David W. Dempster, Valerie A Ruff, Robert R. Recker, Eileen R Gallagher, David A. Hanley, Grattan Woodson, Sudhaker D Rao, Neil Binkley, Michael A. Bolognese, Jahangir Alam, David L. Kendler, Hua Zhou, Christopher Recknor, Paul D. Miller, Robert Lindsay, E. Michael Lewiecki, Kathleen A. Taylor, and Jacques P. Brown
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0301 basic medicine ,Longitudinal study ,Time Factors ,Bone density ,Endocrinology, Diabetes and Metabolism ,Osteoporosis ,Dentistry ,030209 endocrinology & metabolism ,Zoledronic Acid ,03 medical and health sciences ,0302 clinical medicine ,Bone Density ,Osteogenesis ,Periosteum ,Teriparatide ,Biopsy ,medicine ,Humans ,Orthopedics and Sports Medicine ,Longitudinal Studies ,Osteoporosis, Postmenopausal ,Aged ,Diphosphonates ,medicine.diagnostic_test ,business.industry ,Imidazoles ,Middle Aged ,medicine.disease ,Postmenopause ,030104 developmental biology ,medicine.anatomical_structure ,Zoledronic acid ,Cancellous Bone ,Female ,Cortical bone ,business ,Cancellous bone ,medicine.drug - Abstract
Previously, we reported the effects of teriparatide (TPTD) and zoledronic acid (ZOL) on bone formation based on biochemical markers and bone histomorphometry of the cancellous envelope at month 6 in postmenopausal women with osteoporosis who participated in the 12-month primary Skeletal Histomorphometry in Subjects on Teriparatide or Zoledronic Acid Therapy (SHOTZ) study. Patients were eligible to enter a 12-month extension on their original treatment regimen: TPTD 20 μg/day (s.c. injection) or ZOL 5 mg/year (i.v. infusion). A second biopsy was performed at month 24. Here we report longitudinal changes between and within each treatment group in the cancellous, endocortical, intracortical, and periosteal bone envelopes in patients with evaluable biopsies at months 6 and 24 (paired data set: TPTD, n = 10; ZOL, n = 9). Between-group differences are also reported in the larger set of patients with evaluable biopsies at month 6 (TPTD, n = 28; ZOL, n = 30). Data from the cancellous envelope at month 6 or month 24 provided a reference to compare differences across envelopes within each treatment group. The 24-month results extend our earlier report that TPTD and ZOL possess different tissue-level mechanisms of action. Moreover, these differences persisted for at least 2 years in all four bone envelopes. Few longitudinal differences were observed within or across bone envelopes in ZOL-treated patients, suggesting that the low bone formation indices at month 6 persisted to month 24. Conversely, the magnitude of the effect of TPTD on bone formation varied across individual envelopes: median values for mineralizing surface (MS/BS) and bone formation rate (BFR/BS) at month 6 were approximately 3-fold to 5-fold higher in the endocortical and intracortical envelopes compared to the cancellous envelope. Although MS/BS and BFR/BS declined in these envelopes at month 24, median values continued to exceed, or were not significantly different from, those in the cancellous envelope. This study demonstrates for the first time that bone formation indices are higher with TPTD treatment than with ZOL in all four bone envelopes and the difference persists for at least 2 years. Moreover, the magnitude of the effect of TPTD in cortical bone remains robust at 24 months. © 2016 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals, Inc. on behalf of American Society for Bone and Mineral Research (ASBMR).
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- 2016
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15. A Randomized, Double‐Blind Phase 2 Clinical Trial of Blosozumab, a Sclerostin Antibody, in Postmenopausal Women with Low Bone Mineral Density
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Robert R. Recker, Hideaki Sowa, Leijun Hu, Bruce H. Mitlak, Charles Benson, Alan Y Chiang, Stephen L. Myers, Michael A. Bolognese, Toshio Matsumoto, Deborah A. Robins, John H. Krege, and Jahangir Alam
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Genetic Markers ,musculoskeletal diseases ,medicine.medical_specialty ,Bone density ,Blosozumab ,Endocrinology, Diabetes and Metabolism ,Osteoporosis ,Urology ,Romosozumab ,Antibodies, Monoclonal, Humanized ,Bone resorption ,Bone remodeling ,Placebos ,chemistry.chemical_compound ,Double-Blind Method ,Bone Density ,Internal medicine ,medicine ,Humans ,Orthopedics and Sports Medicine ,Osteoporosis, Postmenopausal ,Adaptor Proteins, Signal Transducing ,Aged ,Bone mineral ,business.industry ,medicine.disease ,Postmenopause ,Treatment Outcome ,Endocrinology ,chemistry ,Bone Morphogenetic Proteins ,Sclerostin ,Female ,Bone Remodeling ,business ,Biomarkers - Abstract
Sclerostin, a SOST protein secreted by osteocytes, negatively regulates formation of mineralized bone matrix and bone mass. We report the results of a randomized, double-blind, placebo-controlled multicenter phase 2 clinical trial of blosozumab, a humanized monoclonal antibody targeted against sclerostin, in postmenopausal women with low bone mineral density (BMD). Postmenopausal women with a lumbar spine T-score -2.0 to -3.5, inclusive, were randomized to subcutaneous blosozumab 180 mg every 4 weeks (Q4W), 180 mg every 2 weeks (Q2W), 270 mg Q2W, or matching placebo for 1 year, with calcium and vitamin D. Serial measurements of spine and hip BMD and biochemical markers of bone turnover were performed. Overall, 120 women were enrolled in the study (mean age 65.8 years, mean lumbar spine T-score -2.8). Blosozumab treatment resulted in statistically significant dose-related increases in spine, femoral neck, and total hip BMD as compared with placebo. In the highest dose group, BMD increases from baseline reached 17.7% at the spine, and 6.2% at the total hip. Biochemical markers of bone formation increased rapidly during blosozumab treatment, and trended toward pretreatment levels by study end. However, bone specific alkaline phosphatase remained higher than placebo at study end in the highest-dose group. CTx, a biochemical marker of bone resorption, decreased early in blosozumab treatment to a concentration less than that of the placebo group by 2 weeks, and remained reduced throughout blosozumab treatment. Mild injection site reactions were reported more frequently with blosozumab than placebo. In conclusion, treatment of postmenopausal women with an antibody targeted against sclerostin resulted in substantial increases in spine and hip BMD. These results support further study of blosozumab as a potential anabolic therapy for osteoporosis.
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- 2015
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16. SPATIO-TEMPORAL VARIATION OF AGRICULTURAL DROUGHT IN THE BARIND REGION OF BANGLADESH: AN APPLICATION OF A MARKOV CHAIN MODEL
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A. H. M. Saadat, M. Sayedur Rahman, A. T. M. Jahangir Alam, and Shahriar Rahman
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Hydrology ,Irrigation ,Agricultural development ,Index (economics) ,Markov chain ,business.industry ,Kharif crop ,Soil Science ,Agriculture ,Environmental science ,Agricultural productivity ,business ,Spatial extent ,Agronomy and Crop Science - Abstract
The Barind region of Bangladesh is severely affected by agricultural drought. A geostatistical approach had been conducted to summarize the spatio-temporal variation of agricultural drought in this region. A Markov chain model of higher order has been used to evaluate probabilities of getting a sequence of wet–dry weeks over this region from the rainfall data recorded in 12 rainfall gauge stations for the period 1971–2008. A drought index (DI) considering crucial parameters (DI = 0 ~ 1.00) has been used to estimate the severity of agricultural drought. Geospatial analysis has been conducted to delineate the spatial extent of agricultural drought of different severities in different seasons. The probability of three consecutive dry weeks and probability of at least 10 and 12 weeks was also calculated to find out the suitability of agricultural production. The maximum variation of agricultural drought index (DI = 0.12 ~ 0.43) was found during the pre-kharif (March to May) and kharif (June to October) (DI = 0.47 ~ 0.81) seasons. However, no variation in drought index (DI = 0.01 ~ 0.03) was found during the rabi (November to February) season. The results of this study might be useful to agricultural planners and irrigation engineers in identifying areas where agricultural development should be focused as a long-term drought mitigation strategy. Copyright © 2013 John Wiley & Sons, Ltd.
- Published
- 2013
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17. Irradiated sodium-alginate/poly(ethylene oxide) blend films improved by methyl acrylate monomer
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Serajum Manir, Wasikur Rahman, Nirmal Chandra Dafader, Jahangir Alam, Sumaia Aktar Sumi, and Maksudur R. Khan
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Thermogravimetric analysis ,Tear resistance ,Materials science ,Polymers and Plastics ,Ethylene oxide ,02 engineering and technology ,General Chemistry ,Dynamic mechanical analysis ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Surfaces, Coatings and Films ,chemistry.chemical_compound ,Differential scanning calorimetry ,chemistry ,Polymer chemistry ,Ultimate tensile strength ,Materials Chemistry ,Fourier transform infrared spectroscopy ,0210 nano-technology ,Methyl acrylate ,Nuclear chemistry - Abstract
Sodium alginate (SA)-based poly(ethylene oxide) (PEO) blend films were improved by methyl acrylate (MA) monomer and γ irradiation toward practical application. The films were prepared by a casting method and modified by glycerol (Gol) and mustard oil (MO). The SA-based films were successfully produced with γ irradiation (12 kGy) with 10% PEO, 15% Gol, 20% MO, and 7% MA on a mass basis as optimized. The tensile strength (TS), tear strength (TT), elongation at break (EB), Young's modulus, moisture content, water vapor permeability (WVP), and structural properties of the blended films were determined. The thermal properties of the films were characterized by thermogravimetric analysis, dynamic mechanical analysis, and differential scanning calorimetry, and the structural features were examined with Fourier transform infrared spectroscopy. The ultimate results of this study show a rather remarkable enhancement in the tensile properties (30% TS and 67% TT) and reduction in EB (40%) of the SA-based films with MA addition and γ irradiation. The as-prepared SA-based films demonstrated considerable reductions in the moisture content and WVP and also conferred a desired stability of the films.
- Published
- 2016
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18. Re-examining green revolution diffusion and factor/input markets in Bangladesh after market liberalization
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Mohammad Jahangir Alam, Ismat Ara Begum, and Sanzidur Rahman
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Irrigation ,Liberalization ,business.industry ,Geography, Planning and Development ,Conventional wisdom ,Investment (macroeconomics) ,Agricultural economics ,Agriculture ,Economics ,Soil conservation ,business ,Green Revolution ,Productivity ,Earth-Surface Processes - Abstract
This paper re-examines the effect of green revolution (GR) diffusion on factor/inputs demand in Bangladesh using an empirical model that allows for simultaneous determination of factors influencing adoption of GR technology at the current mature stage, as well as access to irrigation. Results reveal some alignments with conventional wisdom as well as few surprises. For example, while an increased demand for major inputs is expected, an increased demand for organic manure is an unexpected positive outcome. The GR adoption rate is significantly higher in villages with access to irrigation and fertile soils and, surprisingly, in infrastructurally underdeveloped villages. Together with other expected findings of GR technology uptake with higher cereal prices and irrigation use encouraged by access to credit, tenurial status and fertile soils, our findings suggest that investment in irrigation and soil conservation, as well as implementing measures to improve cereal prices and provide agricultural credit, could boost GR technology adoption.
- Published
- 2012
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19. Predicting climate change impact on nutrient pollution in waterways: a case study in the upper catchment of the Latrobe River, Australia
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Jahangir Alam and Dushmanta Dutta
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Pollution ,Hydrology ,Ecology ,media_common.quotation_subject ,Hydrological modelling ,Global warming ,Climate change ,Aquatic Science ,Hydrology (agriculture) ,Nutrient pollution ,Environmental science ,Ecosystem ,Water quality ,Water resource management ,Ecology, Evolution, Behavior and Systematics ,Earth-Surface Processes ,media_common - Abstract
Climate change, together with the increasing influence of anthropogenic activities in the atmosphere, has impacted ecosystems enormously, escalating much concern for pollution control and management. Proper assessment of the effect of temperature rise due to global warming and the subsequent changes in hydrology on catchment biogeochemical processes is essential for accurate prediction of pollution level. Not many studies have been carried out on the aspect of climate change-driven nutrient pollution assessment, and inability of many existing modelling tools persists. With these research needs in focus, this study has made an assessment of climate change impact on nutrient pollution by applying a distributed hydrological modelling tool with newly developed nutrient modules that incorporate climate-based description of catchment and in-stream processes. The model has been applied to the Latrobe River basin in Australia and calibrated and validated prior to simulation of climate change scenarios. The scenarios have been developed on the basis of the Intergovernmental Panel on Climate Change projections of higher-emission scenario A1F1 for this region. The model has predicted the impact of temperature rise on the nutrient-transformation processes and the subsequent releases into waterways for projected high-flow and low-flow situations. The results show that climate change is likely to contribute to increase in nutrient pollution in the waterways. The results have been used to assess future stream water quality condition in the study area.
- Published
- 2012
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- View/download PDF
20. Efficacy of Hollow-Fiber Ultrafiltration for Microbial Sampling in Groundwater
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Md. Jahangir Alam, M. R. Huq, Marc L. Serre, Alice C. Layton, Peter S.K. Knappett, Brian J. Mailloux, Kazi Matin Ahmed, Gary S. Sayler, Larry D. McKay, Daniel E. Williams, Alexander van Geen, and Yasuyuki Akita
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geography ,geography.geographical_feature_category ,biology ,Chemistry ,Microorganism ,Environmental engineering ,Ultrafiltration ,Aquifer ,biology.organism_classification ,Adenoviridae ,law.invention ,Volume (thermodynamics) ,law ,Environmental chemistry ,Escherichia coli ,Bacteroides ,Fiber ,Computers in Earth Sciences ,Water Microbiology ,Groundwater ,Filtration ,Bacteria ,Environmental Monitoring ,Water Science and Technology - Abstract
The goal of this study was to test hollow-fiber ultrafiltration as a method for concentrating in situ bacteria and viruses in groundwater samples. Water samples from nine wells tapping a shallow sandy aquifer in a densely populated village in Bangladesh were reduced in volume approximately 400-fold using ultrafiltration. Culture-based assays for total coliforms and Escherichia coli, as well as molecular-based assays for E. coli, Bacteroides, and adenovirus, were used as microbial markers before and after ultrafiltration to evaluate performance. Ultrafiltration increased the concentration of the microbial markers in 99% of cases. However, concentration factors (CF = post-filtration concentration/pre-filtration concentration) for each marker calculated from geometric means ranged from 52 to 1018 compared to the expected value of 400. The efficiency was difficult to quantify because concentrations of some of the markers, especially E. coli and total coliforms, in the well water (WW) collected before ultrafiltration varied by several orders of magnitude during the period of sampling. The potential influence of colloidal iron oxide precipitates in the groundwater was tested by adding EDTA to the pre-filtration water in half of the samples to prevent the formation of precipitates. The use of EDTA had no significant effect on the measurement of culturable or molecular markers across the 0.5 to 10 mg/L range of dissolved Fe(2+) concentrations observed in the groundwater, indicating that colloidal iron did not hinder or enhance recovery or detection of the microbial markers. Ultrafiltration appears to be effective for concentrating microorganisms in environmental water samples, but additional research is needed to quantify losses during filtration.
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- 2010
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21. A two-dimensional hydrodynamic model for flood inundation simulation: a case study in the lower Mekong river basin
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Kazuo Umeda, Sadayuki Hironaka, Masayoshi Hayashi, Dushmanta Dutta, and Jahangir Alam
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Hydrology ,Flood warning ,geography ,geography.geographical_feature_category ,Flood myth ,Floodplain ,Streamflow ,Flood forecasting ,100-year flood ,Environmental science ,Levee ,Flood stage ,Water Science and Technology - Abstract
The lower Mekong basin is frequently affected by floods. Prolonged floods disrupt daily activities and cause huge socio-economic damage almost every year. An advanced flood warning system could provide achievable non-structural measures for reducing such damages. With a view to developing an advanced flood warning system, a distributed hydrodynamic modelling approach has been adopted for simulating a flood inundation phenomenon in the lower Mekong basin. A modelling system with a one-dimensional (1-D) river flow model and a two-dimensional (2-D) surface flow model has been used for simulating flood inundation. In the model, exchange of flows between the river and surface floodplain is calculated through established links, which determine the overflow from river nodes to surface grids or vice versa. These occur due to overtopping or failure of the levee when water height surpasses levee height. The model has incorporated detailed information about urban terrain features like embankments, roads, bridges, culverts, etc. in the simulation. A geographical information system (GIS)-based comprehensive raster database of different spatial data layers is prepared and used in the model development. An explicit solution scheme is used for numerical computation, which considerably reduces the run time and makes the model suitable for use as a flood warning system in a large river basin. The model simulated results in the lower Mekong basin have shown close alignment with the observed data in terms of water level and discharge in various river gauging stations and flood extents in the floodplain and from the results it can be inferred that the model can predict the magnitude and duration of flood inundation to a reasonable level of accuracy. Copyright © 2007 John Wiley & Sons, Ltd.
- Published
- 2007
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22. Studies on pathogenic Vibrio parahaemolyticus during a warm weather season in the Seto Inland Sea, Japan
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Shin Ichi Miyoshi, Sumio Shinoda, and M. Jahangir Alam
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geography ,geography.geographical_feature_category ,biology ,Vibrio parahaemolyticus ,food and beverages ,Estuary ,biology.organism_classification ,Microbiology ,Enrichment culture ,Pathogenic vibrio ,law.invention ,law ,Aquatic environment ,Seawater ,Ecology, Evolution, Behavior and Systematics ,Bacteria ,Polymerase chain reaction - Abstract
Summary Vibrio parahaemolyticus is a potentially pathogenic bacterium, occurring naturally in estuarine and marine environments throughout the world. The incidence of this organism in an aquatic environment depends upon many ecofactors. Sea water and organic material were collected during the warm weather season from a coast of the Seto Inland Sea, Japan, and analysed to determine V. parahaemolyticus densities and the occurrence of pathogenic strains, defined as those possessing tdh and/or trh genes by polymerase chain reaction (PCR), using isolated DNA from enrichment culture of the samples. About 99% of samples were positive for V. parahaemolyticus with densities of 3 to> 1400 cells per 100 ml of water or 10 g of organic samples by the most-probable-number (MPN)-PCR technique, but only 76.6% were positive by the conventional MPN culture technique, with densities ranging from 3 to> 1400 cells per 100 ml of water or 10 g of organics. Furthermore, the tdh and trh genes were positive in 41.5% and 8.5% of samples, respectively, by the MPN-PCR technique. No tdh and trh gene-positive strains were isolated by the conventional MPN culture procedure. The difference in detection between the MPN culture and the MPN-PCR techniques appeared to be significant and may be attributed to different detection sensitivities and other factors.
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- 2003
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23. Synthesis, docking, in vitro and in vivo antidiabetic activity of pyrazole-based 2,4-thiazolidinedione derivatives as PPAR-γ modulators
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Md. Jahangir Alam, Mohd. Javed Naim, Ozair Alam, Md. Mumtaz Alam, Mohammad Shaquiquzzaman, and Vegi Ganga Modi Naidu
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0301 basic medicine ,medicine.drug_class ,Pharmaceutical Science ,Peroxisome proliferator-activated receptor ,Pharmacology ,01 natural sciences ,Streptozocin ,Diabetes Mellitus, Experimental ,Mice ,Structure-Activity Relationship ,03 medical and health sciences ,Transactivation ,In vivo ,3T3-L1 Cells ,Drug Discovery ,medicine ,Animals ,Humans ,Hypoglycemic Agents ,Thiazolidinedione ,Cells, Cultured ,chemistry.chemical_classification ,Dose-Response Relationship, Drug ,Molecular Structure ,010405 organic chemistry ,Biological activity ,Rats ,0104 chemical sciences ,Molecular Docking Simulation ,PPAR gamma ,HEK293 Cells ,030104 developmental biology ,chemistry ,Docking (molecular) ,Pyrazoles ,Thiazolidinediones ,Rosiglitazone ,Pioglitazone ,medicine.drug - Abstract
The design, synthesis, structure-activity relationship, and biological activity of 2,4-thiazolidinedione derivatives as peroxisome proliferator-activated receptor-γ (PPAR-γ) modulators for antidiabetic activity are reported. Fifteen 2,4-thiazolidinedione derivatives clubbed with pyrazole moiety were docked into the ligand binding domain of PPAR-γ by the Glide XP module of Schrodinger. Eight derivatives (5a, 5b, 5d, 5f, 5i, 5l, 5n, 5o) having Glide XP scores > -8 as compared to the standard drug, rosiglitazone (Glide XP score = -9.165), showed almost similar interaction with the amino acids such as HIS 449, TYR 473, TYR 327, HIS 323, and SER 289 in the molecular docking studies. These eight derivatives were further screened for PPAR-γ transactivation and in vivo blood glucose lowering activity in the streptozotocin-induced diabetic rat model. Compounds 5o, 5n, 5a, 5i, and 5b showed 52.06, 51.30, 48.65, 43.13, and 40.36% PPAR-γ transactivation as compared to the reference drugs rosiglitazone and pioglitazone with 85.30 and 65.22% transactivation, respectively. The data analysis showed significant blood glucose lowering effects (hypoglycemia) of compounds 5o, 5n, and 5a (140.1 ± 4.36, 141.4 ± 6.15, and 150.7 ± 4.15, respectively), along with reference drugs pioglitazone (135.2 ± 4.91) and rosiglitazone (141.1 ± 5.88) as compared to the diabetic control. Furthermore, the most potent compound 5o also elevated the PPAR-γ gene expression by 2.35-fold as compared to rosiglitazone (1.27-fold) and pioglitazone (1.6-fold). It also significantly lowered the AST, ALT, and ALP levels and caused no damage to the liver.
- Published
- 2018
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24. Benzimidazole Scaffold as Anticancer Agent: Synthetic Approaches and Structure-Activity Relationship
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Ozair Alam, Md. Jahangir Alam, Neelima Shrivastava, Farah Nawaz, Mohd. Javed Naim, and Shujauddin Ahmed
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0301 basic medicine ,Benzimidazole ,Bicyclic molecule ,010405 organic chemistry ,Stereochemistry ,Pharmaceutical Science ,Abnormal cell ,01 natural sciences ,World health ,0104 chemical sciences ,03 medical and health sciences ,chemistry.chemical_compound ,Tubulin Inhibitors ,030104 developmental biology ,chemistry ,Drug Discovery ,Structure–activity relationship ,Pharmacophore - Abstract
Cancer, also known as malignant neoplasm, is a dreadful disease which involves abnormal cell growth having the potential to invade or spread to other parts of the body. Benzimidazole is an organic compound that is heterocyclic and aromatic in nature. It is a bicyclic compound formed by the fusion of the benzene and imidazole ring systems. It is an important pharmacophore and a privileged structure in medicinal chemistry. According to the World Health Organisation (2015 survey), one in six deaths is due to cancer around the globe, accounting for 8.8 million deaths of which 70% of the cases were from low- and middle-income countries. In the efforts to develop suitable anticancer drugs, medicinal chemists have focussed on benzimidazole derivatives. This review article covers the current development of benzimidazole-based anticancer agents along with the synthetic approaches and structure-activity relationships (SAR).
- Published
- 2017
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25. Zinc modulation of osterix expression in osteoblastic MC3T3‐E1 cells
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Md. Jahangir Alam, Hyun-Ju Seo, Young-Eun Cho, Ethel H. Alcantara, and In-Sook Kwun
- Subjects
Modulation ,Chemistry ,Genetics ,chemistry.chemical_element ,Zinc ,Mc3t3 e1 ,Molecular Biology ,Biochemistry ,Biotechnology ,Cell biology - Published
- 2009
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26. Zinc stimulates extracellular matrix mineralization in osteoblastic MC3T3‐E1 cells
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Young-Eun Cho, Ria-Ann R. Lomeda, In-Sook Kwun, Md. Jahangir Alam, and Ethel H. Alcantara
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Extracellular matrix ,chemistry ,Genetics ,Biophysics ,chemistry.chemical_element ,Zinc ,Mineralization (soil science) ,Mc3t3 e1 ,Molecular Biology ,Biochemistry ,Biotechnology - Published
- 2009
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27. Distribution ofPlesiomonas shigelloidesin Various Components of Pond Ecosystems in Dhaka, Bangladesh
- Author
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Md. Jahangir Alam, Sirajul Islam Khan, and Md. Sirajul Islam
- Subjects
Bangladesh ,Ecology ,biology ,Immunology ,Sediment ,Seasonality ,biology.organism_classification ,medicine.disease ,Microbiology ,Plesiomonas shigelloides ,Virology ,Aquatic plant ,Phytoplankton ,medicine ,Plesiomonas ,Ecosystem ,Seasons ,Water Microbiology ,Charca - Abstract
Plesiomonas shigelloides is considered to be a waterborne agent of human gastroenteritis. An ecological study was carried out in five ponds in Dhaka city over a period of one year to elucidate the distribution and seasonality of this organism in various components of pond ecosystems. Samples were collected from hydrophytes, water, phytoplankton and sediment every 15 days over 12 months and cultured for P. shigelloides. P. shigelloides was isolated from a total of 120 samples including 25 (20.8%), 16 (13.3%), 22 (18.3%) and 35 (29.2%) of hydrophytes, water, phytoplankton and sediment samples, respectively. Distinct seasonal patterns of isolation of P. shigelloides were observed in the four components with two distinct peaks. The highest peaks were observed in hydrophytes and water samples in May and in phytoplankton and sediment in November. P. shigelloides was isolated from all components from all ponds during the study period. These results suggest that P. shigelloides is an autochthonous member in the freshwater pond ecosystems in Dhaka, Bangladesh.
- Published
- 1991
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28. SPATIO-TEMPORAL VARIATION OF AGRICULTURAL DROUGHT IN THE BARIND REGION OF BANGLADESH: AN APPLICATION OF A MARKOV CHAIN MODEL
- Author
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Jahangir Alam, A. T. M., primary, Saadat, A. H. M., additional, Sayedur Rahman, M., additional, and Rahman, Shahriar, additional
- Published
- 2013
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29. RO1138452 and RO3244794: characterization of structurally distinct, potent and selective IP (prostacyclin) receptor antagonists
- Author
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Bley, Keith R, primary, Bhattacharya, Anindya, additional, Daniels, Don V, additional, Gever, Joel, additional, Jahangir, Alam, additional, O'Yang, Counde, additional, Smith, Steven, additional, Srinivasan, Dinesh, additional, Ford, Anthony P D W, additional, and Jett, Mary-Frances, additional
- Published
- 2006
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30. Discovery and SAR Development of 2‐(Phenylamino)imidazolines as Postacyclin Receptor Antagonists.
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Clark, Robin D., primary, Jahangir, Alam, additional, Severance, Daniel, additional, Salazar, Rick, additional, Chang, Thomas, additional, Chang, David, additional, Jett, Mary Frances, additional, Smith, Steven, additional, and Bley, Keith, additional
- Published
- 2004
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31. Lateral Lithiation Reactions Promoted by Heteroatomic Substituents
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Clark, Robin D., primary and Jahangir, Alam, additional
- Published
- 1995
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32. Environmental Health and the 1991 Bangladesh Cyclone
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HOQUE, BILQIS A., primary, SACK, R. BRADLEY, additional, JAHANGIR, ALAM M., additional, HAZERA, NAZRUL, additional, SIDDIQI, MIZAN, additional, and NAHID, ALI, additional
- Published
- 1993
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33. Insights Into Genetic Variations of the OCT1 Gene in Metformin Poor Responders Among Bangladeshi Type 2 Diabetic Patients
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Rokeya Begum, Arindita Das, Md. Jahangir Alam, and Gazi Nurun Nahar Sultana
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Therapeutics. Pharmacology ,RM1-950 - Abstract
Metformin is the most widely prescribed drug for the treatment of Type 2 diabetes mellitus (T2DM), but its response varies from person to person. This study aims to analyze the complete mutation spectrum of the OCT1 gene in metformin poor responders and to explore the potential pathogenic effects of the identified mutations. Clinical features of 56 Bangladeshi T2DM patients (who showed altered response to metformin) were analyzed, and genomic DNA was extracted from their blood samples. Subsequently, the entire exons (1–11), along with flanking introns of the OCT1 gene were amplified and sequenced. Molecular consequences of the identified mutations on OCT1 protein activity were determined through in silico analyses. In this study, 29 mutations of the OCT1 gene were identified; among which 5 mutations (c.412-86G>T, c.970G>C, c.1386-3088_1386-3083delGAATCA, c.1498+66G>T, and c.1653C>A) were novel. It was found that nsSNPs c.181C>T, c.1022C>T, c.493G>T, c.1207A>G, and c.970G>C (novel) as well as frameshift deletions have potential deleterious effects on OCT1 protein stability and function. Some of these mutations also cause alternative splicing, as per the HSF tool. In addition, alteration of interatomic bonding in the OCT1 protein due to two high-risk mutations (c.181C>T and c.1022C>T) was found from web-based analysis. The mutations, as mentioned earlier, are the most probable causative factor of decreased metformin effectiveness and adverse side effects in T2DM patients who are poor responders. Understanding the OCT1 gene variations of patients can help tailor treatment strategies for optimal metformin response or identify alternative medications.
- Published
- 2025
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34. Impact of agricultural intervention on income and employment in hoar wetland areas of Bangladesh
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Jasim Uddin Ahamed, Bibi Marium, Ismat Ara Begum, Shijun Ding, Tukir Ahmed, Md. Mosharraf Uddin Molla, and Mohammad Jahangir Alam
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Agriculture (General) ,S1-972 - Abstract
Abstract The study aimed to investigate the current scenario of wetland households and the impact of agricultural interventions. It also sought to qualitatively assess rural development, the food system, and poverty from the perspective of wetland areas in Bangladesh. A total of 1000 respondents were selected using a simple random sampling technique. Descriptive statistics and econometric models were employed for data analysis. The findings reveal that livelihood activities are seasonal. They also indicate that rice‐valued well‐being has significantly improved due to successive agricultural policy regimes. Additionally, protection interventions, well‐being, and policy periods were negatively associated with poverty. The study found that agricultural interventions have substantially enhanced income, employment, and labor productivity due to successive agricultural policy regimes. To advance development in wetland areas, it is recommended to focus on enhancing local knowledge, implementing river erosion control measures, developing rice varieties, diversifying crops, improving flood control measures, establishing a nutritious food supply chain, and enacting relevant regulations.
- Published
- 2024
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35. Predictors of mortality and ICU requirement in hospitalized COVID‐19 patients with diabetes: A multicentre study
- Author
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Md Asaduzzaman, Mohammad Romel Bhuia, Mohammad Zabed Jillul Bari, Zhm Nazmul Alam, Khalidur Rahman, Enayet Hossain, and Munsi Mohammad Jahangir Alam
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COVID‐19 ,DM ,Mortality ,ICU requirement ,Nursing ,RT1-120 - Abstract
Abstract Aim This study aimed to identify the predictors of mortality and ICU requirements in hospitalized COVID‐19 Patients with Diabetes. Design Cross‐sectional study. Methods It was a retrospective study of patients hospitalized with COVID‐19 infection from October 2020–February 2021 in four hospitals in Sylhet, Bangladesh. Logistic regression analysis was applied to explore the predictors of ICU requirement and in‐hospital mortality. Results In the whole cohort (n = 500), 11% of patients died and 24% of patients required intensive care unit (ICU) support. Non‐survivors had significantly higher prevalence of lymphopenia, thrombocytopenia and leukocytosis. Significant predictors of in‐hospital mortality were older age, neutrophil count, platelet count and admission peripheral capillary oxygen saturation (SpO2). Older age, ischemic heart disease, WBC count, D‐dimer and admission SpO2 were identified as significant predictors for ICU requirement. Patient or Public Contribution No.
- Published
- 2023
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36. Clinical Characteristics and Predictors of Mortality in Elderly Patients Hospitalized with COVID-19 in Bangladesh: A Multicenter, Retrospective Study
- Author
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Md. Asaduzzaman, Z. H. M. Nazmul Alam, Mohammad Zabed Jillul Bari, M. M. Jahangir Alam, Shishir Ranjan Chakraborty, and Tasnim Ferdousi
- Subjects
Infectious and parasitic diseases ,RC109-216 - Abstract
Purpose. Elderly patients are at high risk of fatality from COVID-19. The present work aims to describe the clinical characteristics of elderly inpatients with COVID-19 and identify the predictors of in-hospital mortality at admission. Materials and Methods. In this retrospective, multicenter cohort study, we included elderly COVID-19 inpatients (n = 245) from four hospitals in Sylhet, Bangladesh, who had been discharged between October 2020 and February 2021. Demographic, clinical, and laboratory data were extracted from hospital records and compared between survivors and nonsurvivors. We used univariable and multivariable logistic regression analysis to explore the risk factors associated with in-hospital death. Principal Results. Of the included patients, 202 (82.44%) were discharged and 43 (17.55%) died in hospital. Except hypertension, other comorbidities like diabetes, chronic kidney disease, ischemic heart disease, and chronic obstructive pulmonary disease were more prevalent in nonsurvivors. Nonsurvivors had a higher prevalence of leukocytosis (51.2 versus 30.7; p=0.01), lymphopenia (72.1 versus 55; p=0.05), and thrombocytopenia (20.9 versus 9.9; p=0.07). Multivariable regression analysis showed an increasing odds ratio of in-hospital death associated with older age (odds ratio 1.05, 95% CI 1.01–1.10, per year increase; p=0.009), thrombocytopenia (OR = 3.56; 95% CI 1.22–10.33, p=0.019), and admission SpO2 (OR 0.91, 95% CI 0.88–0.95; p=0.001). Conclusions. Higher age, thrombocytopenia, and lower initial level of SpO2 at admission are predictors of in-hospital mortality in elderly patients with COVID-19.
- Published
- 2022
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37. Paraquat‐induced acute kidney and liver injury: Case report of a survivor from Bangladesh
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Md Asaduzzaman, Monotush Ronjon Chando, Nasad Ahmed, Khandaker Mohammad Rezwanul Islam, Munsi Mohammad Jahangir Alam, and Soumitra Roy
- Subjects
acute kidney injury ,acute liver injury ,paraquat ,survivor ,Medicine ,Medicine (General) ,R5-920 - Abstract
Abstract Despite high fatality following paraquat ingestion, a few percentages of patients survive even after organ damage appears. We need to focus more on careful clinical and laboratory monitoring. Early diagnosis and Supportive therapy are crucial.
- Published
- 2021
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