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Das P, Benslimane A, Islam MA, Mondal D, Nazim MS. A thermo-mechanically loaded rotating FGM cylindrical pressure vessels under parabolic changing properties: An analytical and numerical analysis. Heliyon 2024; 10:e25969. [PMID: 38390054 PMCID: PMC10881340 DOI: 10.1016/j.heliyon.2024.e25969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/24/2024] Open
Abstract
This study aims to develop an exact analytical solution for steady-state thermo-mechanical stress in a functionally graded (FG) thick-walled cylindrical vessel. The cylinder is subjected to combined rotational speed and internal pressures while the thermal load is with convective and radiative boundary conditions. The dimensionless governing equations and boundary conditions, represented as a quartic equation, are derived and solved using Ferrari's method. The temperature, displacement, and stress fields across the thick-walled cylindrical vessel are calculated by finding the roots of the quartic equation. In order to investigate the accuracy of the exact analytical solution, a numerical model is constructed based on a standard Galerkin discretization approach of the finite element method (FEM). The analytical solutions and the results obtained through FEM show a high level of agreement. Furthermore, the study analyzes the effects of material parameters on temperature, displacement, and stress fields. Displacement, temperature, and stress fields are presented in the form of dimensionless graphs along the radial direction. For the considered parametric studies, results revealed that parabolic grading is beneficial than conventional grading. This study reveals that for the thermal loading, the maximum temperature, displacement, and tangential stress decrease for the parabolic grading. A similar but lower value of temperature, displacement, and tangential stress is also observed in the case of thermomechanical loading. This study is expected to assist in the assessment of the reliability of load calculations and contribute to the overall durability of pressure vessels. The results obtained from this study can provide valuable insights into thermo-elasticity and the thermo-mechanical behavior of thick-walled cylindrical vessels and can aid in the design and optimization of such systems.
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Affiliation(s)
- P Das
- Department of Mechanical Engineering, Khulna University of Engineering & Technology, Khulna, 9203, Bangladesh
- Department of Mechanical Engineering, Bangladesh Army University of Science and Technology, Saidpur, Bangladesh
| | - A Benslimane
- Laboratoire de Mécanique Matériaux et Énergétique (L2ME), Faculté de Technologie, Université de Bejaia, 06000, Bejaia, Algeria
| | - M A Islam
- Department of Mechanical Engineering, Khulna University of Engineering & Technology, Khulna, 9203, Bangladesh
| | - D Mondal
- Department of Mechanical Engineering, Khulna University of Engineering & Technology, Khulna, 9203, Bangladesh
| | - M S Nazim
- Laboratoire de Mécanique Matériaux et Énergétique (L2ME), Faculté de Technologie, Université de Bejaia, 06000, Bejaia, Algeria
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Anika TT, Noman ZA, Islam MS, Sultana N, Ashraf MN, Pervin M, Islam MA, Hossain MM, Rahman MT, Khan MAHNA. Draft genome sequence of multidrug-resistant Escherichia coli MAHK_SCM_BAU_30A strain isolated from a subclinical mastitis cow in Bangladesh. Microbiol Resour Announc 2023; 12:e0071323. [PMID: 37889012 PMCID: PMC10652913 DOI: 10.1128/mra.00713-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 09/21/2023] [Indexed: 10/28/2023] Open
Abstract
This study announces the sequence of a multidrug-resistant Escherichia coli MAHK_SCM_BAU_30A strain isolated from bovine subclinical mastitis milk in 2022 in Bangladesh. Our assembled genome had a length of 4,884,948 bp, three plasmids, two CRISPR arrays, five prophages, 51 predicted antibiotic resistance, and 72 predicted virulence factor genes.
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Affiliation(s)
- Tasnia Tabassum Anika
- Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Zakaria Al Noman
- Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
| | - Md. Saiful Islam
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
- Department of Animal Sciences, University of California—Davis, Davis, California, USA
| | - Nazneen Sultana
- Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Md. Nahid Ashraf
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Munmun Pervin
- Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Mohammad Ariful Islam
- Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Mokbul Md. Hossain
- Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Md. Tanvir Rahman
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
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Akhter M, Rahim S, Bhuiyan R, Siddique AB, Mostafa T, Alam MN, Hallaz MM, Islam MA. Prevalence of Diarrhea and its Relation with Severity of the Disease among Covid-19 Positive Patient in a Selected Covid Dedicated Hospital. Mymensingh Med J 2023; 32:1178-1183. [PMID: 37777918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/02/2023]
Abstract
Covid-19 has become a pandemic since its emergence in Wuhan, China. It involves Gastro intestinal (GI) system and diarrhea is recognized as an important symptom. Diarrhea is also associated with disease severity. This study was conducted to see the prevalence of diarrhea in Covid-19 positive patient and its relation with disease severity. Prospective observational study done among consecutive Covid-19 positive patient of both sex admitted in Mugda Medical College Hospital in Dhaka from February 2021 to April 2021. Informations were collected by face to face interview and severity was assessed on bedside. Among 166 Covid-19 positive patient 40.0% developed diarrhea. Mean age of the diarrheal patients was 44.21±14.40. Women affected more than men (51.0% versus 49.0%). In majority patient (62.0%) diarrhea persist for 3-7 days and majority had frequency of bowel movement 3-5 times per day. Regarding Bristol stool type 47.0% had stool type 6 followed by stool type 7(43.0%) and stool type 5(10.0%). Half of the diarrheal patient (48.0%) had severe pneumonia. Severe pneumonia is significantly more common in non-diarrheal patients (65.0%) than in diarrheal patient (35.0%) (p=0.007). This study reflects that a large number of Covid-19 positive patients developed diarrhea. Half of the diarrheal patients had severe pneumonia. But severe pneumonia is significantly common in non-diarrheal patient than diarrheal patients.
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Affiliation(s)
- M Akhter
- Dr Mahfuza Akhter, Assistant Professor, Department of Gastroenterology, Mugda Medical College (MuMC), Dhaka, Bangladesh; E-mail:
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Sorwer MS, Khan NA, Miah AH, Rahman MA, Khan DJ, Islam MA, Jahan UR, Roy HK, Islam MA. Assessment of Serum Homocysteine Level to Predict Early Prognosis of Ischaemic Stroke. Mymensingh Med J 2023; 32:975-982. [PMID: 37777889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/02/2023]
Abstract
Cerebrovascular disease is the third most familiar cause of mortality worldwide and in Bangladesh. The reported prevalence of stroke in Bangladesh is 0.3%. Age, high serum glucose, elevated admission blood pressure, fever, large infarction size, and hyperhomocysteinemia has been reported to be risk factor for early post-stroke neurological deterioration. Early serum homocysteine level estimation can predict the early prognosis of ischemic stroke. In a developing country like Bangladesh, an earlier stroke outcome prediction for guiding therapeutic approach is essential. This study aimed to specify the role of estimating serum homocysteine during the early phase of acute ischemic stroke to assume an early prognosis that would guide- a management plan, the need to stay in the hospital and the need for intervention. This cross-sectional descriptive study was performed at the Department of Medicine, Mymensingh Medical College Hospital, Bangladesh from October 2021 to April 2022. Radiologically confirmed all ischemic stroke patients admitted at the Department of Medicine, Mymensingh Medical College Hospital, during the study period fulfilling the inclusion and exclusion criteria were included in this study. Non-probability purposive sampling technique was used. Data was collected using a pre-designed case record form. Quantitative data were represented as mean and standard deviation and qualitative data as frequency and percentage. The comparison was made by Chi-square test and independent samples t-test using SPSS (version 26.0). During the study period, among 716 stroke patients, 59 ischemic stroke patients were included in this study. The mean age of the patients was 64.0±11.72 years. After 72 hours of supportive treatment, early neurological outcomes were observed using NIHSS scoring. Out of 59 patients, the condition of 45(76.0%) patients improved or remained stable (END-) and the state of 14(24.0%) patients worsened (END+). Elderly age-raised temperature and elevated blood glucose level are known to increase infarction size, but only elevated temperature (p value 0.009) has statistical significance in this study. The mean homocysteine level ±SD was 20.22±6.95μmol/L, which is above the normal (<15μmol/L). The level was above average for both outcome groups. Serum homocysteine level was significantly higher in END(+) group (31.59±2.98μmol/L) than END(-) group (16.69±2.66μmol/L) and p value was <0.001.
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Affiliation(s)
- M S Sorwer
- Dr Md Sayem Sorwer, Indoor Medical Officer, Department of Respiratory Medicine, Mymensingh Medical College Hospital (MMCH), Mymensingh, Bangladesh; E-mail:
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Rahman MA, Islam MM, Ali ME, Islam MA, Afroze F, Hossain MS, Rus'd AA. Molecular Epidemiology of HCV RNA Genotype-3 in Dhaka City, Bangladesh. Glob Med Genet 2023; 10:199-204. [PMID: 37565062 PMCID: PMC10411236 DOI: 10.1055/s-0043-1771182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023] Open
Abstract
Hepatitis C virus (HCV) is a causative agent that causes chronic liver diseases worldwide. It is a little, enclosed, single-stranded ribonucleic acid (RNA) virus. The recognition of the pathogenic HCV genotype is critical for the remedy of its sufferers. The aim of this study was to identify the HCV RNA genotype to decide the correct treatment of hepatitis C positive sufferers in Bangladesh. Blood samples were collected from 390 individuals and isolated RNA (60 µg) from blood plasma. Extracted RNA was used for quantitative HCV RNA, and complementary DNA (cDNA) was prepared by polymerase chain reaction (PCR) conducted by reverse transcriptase enzyme. This cDNA amplified in multiplex by RT-PCR, which was performed with specific set of primers. The HCV RNA genotype was detected 297 of 390 patients. Of the 390 test samples, 200 (51.28%) samples were from males and 190 (48.71%) were from females, with age ranging from 5 to 78 years. In all, 166 of 200 male samples and 131/190 female samples were found positive for HCV. Of these 390 participants included in the study, 213 (54.61%) were identified as genotype 3 positive, 78 (20%) as genotype 1 positive, 6 (1.53%) as genotype 6 positive, and the remaining 93 (23.85%) samples were unclassified due to low/undetected viral load. In this study, we detected the highest percentage (30.89%) of genotype 3 HCV in patients aged 51 to 60 years. The results suggested that genotype 3 HCV is frequently present in Bangladesh and it is usually responses better to interferon therapy. However, genotype 1 and 6 HCV have also been found circulating in this country, which demands longer treatments and effective control measures.
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Affiliation(s)
- Md Arifur Rahman
- Department of Microbiology, Jagannath University, Dhaka, Bangladesh
- PCRLaboratory, Ibn Sina Diagnostics and Imaging Center, Dhaka, Bangladesh
- Division of Molecular Diagnosis and Clinical Genetics, BioIcon Academy, Dhaka, Bangladesh
| | - Md Monirul Islam
- PCR & Molecular Diagnosis Section, Labaid Limited (Diagnostics), Dhaka, Bangladesh
- Division of Molecular Diagnosis and Clinical Genetics, BioIcon Academy, Dhaka, Bangladesh
| | - Md Eunus Ali
- PCRLaboratory, Ibn Sina Diagnostics and Imaging Center, Dhaka, Bangladesh
- Department of Microbiology and Immunology, BSMMU, Dhaka, Bangladesh
| | | | - Farhana Afroze
- Department of Microbiology, Jagannath University, Dhaka, Bangladesh
| | - Mohammad Shamim Hossain
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
- Division of Molecular Diagnosis and Clinical Genetics, BioIcon Academy, Dhaka, Bangladesh
| | - Ahmed Abu Rus'd
- Department of Microbiology, Jagannath University, Dhaka, Bangladesh
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Hasan SMM, Sturm-Ramirez K, Kamal AHM, Islam MA, Rahman M, Kile JC, Kennedy ED, Gurley ES, Islam MS. Quail Rearing Practices and Potential for Avian Influenza Virus Transmission, Bangladesh. Ecohealth 2023; 20:167-177. [PMID: 37455270 DOI: 10.1007/s10393-023-01643-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/15/2023] [Accepted: 06/16/2023] [Indexed: 07/18/2023]
Abstract
In 2015, human influenza surveillance identified a human infection with A/H9N2 in Dhaka, Bangladesh with evidence of exposure to a sick quail. We conducted in-depth interviews with household quail caregivers, pet bird retail shop owners, and mobile vendors, key informant interviews with pet bird wholesale shop owners, one group discussion with pet bird retail shop workers and unstructured observations in households, pet bird wholesale and retail markets, and mobile bird vendor's travelling areas to explore quail rearing and selling practices among households, mobile vendors, and retail pet bird and wholesale bird markets in Dhaka. Every day, quail were supplied from 23 districts to two wholesale markets, and then sold to households and restaurants directly, or through bird shops and mobile vendors. All respondents (67) reported keeping quail with other birds in cages, feeding quail, cleaning feeding pots, removing quail faeces, slaughtering sick quail, and discarding dead quail. Children played with quail and assisted in slaughtering of quail. Most respondents (94%) reported rinsing hands with water only after slaughtering and disposing of wastes and dead quail. No personal protective equipment was used during any activities. Frequent unprotected contact with quail and their by-products potentially increased the risk of cross-species avian influenza virus transmission. Avian influenza surveillance in retail pet bird and wholesale bird markets, mobile vendors, and households may identify cases promptly and reduce the risk of virus transmission.
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Affiliation(s)
- S M Murshid Hasan
- Programme for Emerging Infections, Infectious Diseases Division, ICDDR,B, Dhaka, Bangladesh.
- Department of Society and Health, Mahidol University, Bangkok, Thailand.
| | | | - Abu-Hena Mostofa Kamal
- Programme for Emerging Infections, Infectious Diseases Division, ICDDR,B, Dhaka, Bangladesh
- Department of Humanities, Khulna University of Engineering and Technology (KUET), Khulna, Bangladesh
| | - Mohammad Ariful Islam
- Programme for Emerging Infections, Infectious Diseases Division, ICDDR,B, Dhaka, Bangladesh
| | - Mahmudur Rahman
- Institute of Epidemiology Disease Control and Research, Dhaka, Bangladesh
| | - James C Kile
- Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Erin D Kennedy
- Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Emily S Gurley
- Programme for Emerging Infections, Infectious Diseases Division, ICDDR,B, Dhaka, Bangladesh
- Johns Hopkins Bloomberg School of Public Health, Baltimore, USA
| | - Md Saiful Islam
- Programme for Emerging Infections, Infectious Diseases Division, ICDDR,B, Dhaka, Bangladesh
- School of Population Health, University of New South Wales, Sydney, Australia
- Research School of Population Health, ANU College of Health and Medicine, The Australian National University, Canberra, Australia
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Hossain MJ, Islam MW, Munni UR, Gulshan R, Mukta SA, Miah MS, Sultana S, Karmakar M, Ferdous J, Islam MA. Health-related quality of life among thalassemia patients in Bangladesh using the SF-36 questionnaire. Sci Rep 2023; 13:7734. [PMID: 37173392 PMCID: PMC10182078 DOI: 10.1038/s41598-023-34205-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
Thalassemia is one of the most common autosomal recessive hereditary blood disorders worldwide, especially in developing countries, including Bangladesh. Thus, this study aimed to determine HRQoL and its determinants of thalassemia patients (TP) in Bangladesh. A cross-sectional survey was performed on 356 randomly selected thalassemia patients. Participants were invited to face-to-face interviews. Descriptive statistics (frequencies and percentages), independent t-test, ANOVA, and multivariate (linear and logistic regression) analysis was performed to analyze the data. Our demographic data showed that among 356 patients, 54% and 46% were male and female, respectively, with an average age of 19.75 (SD = 8.02) years. Most were transfusion-dependent (91%), 26% had comorbidities, and 52% were from low-income families. In the case of HRQoL, male patients showed significantly higher scores of bodily pains and physical health summaries than female patients. Lower income, high blood transfusion status, disease severity, comorbidities, and medical expenses (p < 0.05; CI 95%) are significantly associated with lower SF-36 scores. This study found an association between lower income, blood transfusion, disease severity, comorbidities, as well as medical expenses, and the deterioration of HRQoL among TP. Male patients experienced poorer HRQoL than females. National action plans are required to guarantee the holistic welfare of thalassemia patients.
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Affiliation(s)
- Md Jubayer Hossain
- Population Health Studies Division, Center for Health Innovation, Research, Action, and Learning-Bangladesh (CHIRAL Bangladesh), 9-10 Chittaranjan Avenue, Dhaka, 1100, Bangladesh
| | - Md Wahidul Islam
- Population Health Studies Division, Center for Health Innovation, Research, Action, and Learning-Bangladesh (CHIRAL Bangladesh), 9-10 Chittaranjan Avenue, Dhaka, 1100, Bangladesh
| | - Ummi Rukaiya Munni
- Population Health Studies Division, Center for Health Innovation, Research, Action, and Learning-Bangladesh (CHIRAL Bangladesh), 9-10 Chittaranjan Avenue, Dhaka, 1100, Bangladesh
- Health Systems and Population Studies Division, International Centre for Diarrhoeal Disease Research, Bangladesh, 68, Shaheed Tajuddin Ahmed Sarani Mohakhali, Dhaka, 1212, Bangladesh
- BRAC James P Grant School of Public Health, BRAC University, 66, Mohakhali, Dhaka, 1212, Bangladesh
| | - Rubaiya Gulshan
- Population Health Studies Division, Center for Health Innovation, Research, Action, and Learning-Bangladesh (CHIRAL Bangladesh), 9-10 Chittaranjan Avenue, Dhaka, 1100, Bangladesh
| | - Sumaiya Akter Mukta
- Population Health Studies Division, Center for Health Innovation, Research, Action, and Learning-Bangladesh (CHIRAL Bangladesh), 9-10 Chittaranjan Avenue, Dhaka, 1100, Bangladesh
| | - Md Sharif Miah
- Population Health Studies Division, Center for Health Innovation, Research, Action, and Learning-Bangladesh (CHIRAL Bangladesh), 9-10 Chittaranjan Avenue, Dhaka, 1100, Bangladesh
| | - Sabia Sultana
- Population Health Studies Division, Center for Health Innovation, Research, Action, and Learning-Bangladesh (CHIRAL Bangladesh), 9-10 Chittaranjan Avenue, Dhaka, 1100, Bangladesh
- Department of Microbiology, Jagannath University, 9-10 Chittaranjan Avenue, Dhaka, 1100, Bangladesh
| | - Mousumi Karmakar
- Department of Microbiology, Bangladesh University of Health Sciences, 125, Technical Mor, 1 Darus Salam Rd, Dhaka, 1216, Bangladesh
| | - Jannatul Ferdous
- Department of Transfusion Medicine, Mugda Medical College and Hospital, Hazi Kadam Ali Rd, Dhaka, Bangladesh
- Bangladesh Thalassemia Foundation, Chamelibagh, Shantinagar, Dhaka, 1217, Bangladesh
| | - Mohammad Ariful Islam
- Department of Microbiology, Jagannath University, 9-10 Chittaranjan Avenue, Dhaka, 1100, Bangladesh.
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Alam QS, Saha MK, Alam MK, Rahman MA, Salam SI, Rahman MM, Hossain MJ, Roy MK, Alam MT, Mollick K, Islam MA. A Modified Approach for Harvesting Non Vascularized Fibular Graft for Pediatric Age Group. Mymensingh Med J 2023; 32:476-479. [PMID: 37002760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
The conventional technique of harvesting free non-vascularized fibular grafting is associated with different scale of morbidity and usually a long scar. We follow a technique that causes minimum interference to the surrounding soft tissues to harvest the desired length of fibula. This prospective study was performed at Department of Orthopaedics, Dhaka Medical College Hospital from January 2018 to December 2018. Thirty patients of average age 10.5 years (range 8 to 14 years) were taken up for the study. The fibula was harvested by two separate incisions, 1 cm each at proximal and distal extent of proposed length of graft after elevating the periosteum circumferentially using a periosteum elevator. Compression bandage and above knee plaster immobilization was applied that help to reduce hematoma formation. The mean follow up is 12 months. The patients were evaluated clinically and by radiology. Twenty nine patients showed good results. One patient had delayed wound healing resulting in fair result. This modified approach of harvesting fibula reduces donor site morbidity and is safer and easier than conventional approach.
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Affiliation(s)
- Q S Alam
- Dr Quazi Shahid-ul Alam, Assistant Professor of Paediatric Orthopaedics, Dhaka Medical College (DMC), Dhaka, Bangladesh; E-mail:
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Datta NK, Das KP, Islam MA, Aish PK, Datta M. Management of Adult Traumatic Brachial Plexus Injury. Mymensingh Med J 2023; 32:437-447. [PMID: 37002755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
Brachial plexus injury is not uncommon in our country like Bangladesh and it causes functional damage and physical disability of the upper limbs. Most of the cases were caused by motor vehicle accident. We have conducted a prospective study for the operative treatment of 105 adult traumatic brachial plexus injury cases in Hand unit in the department of Orthopaedics, Bangabandhu Sheikh Mujib Medial University (BSMMU) during January 2012 to July 2019. The main surgical options for brachial plexus injury include primary reconstructive surgery such as neurolysis, direct repair, nerve graft, nerve transfer (neurotization) and possibly free functioning (gracilis) muscle transfer and secondary reconstructive procedure such as tendon transfer, arthrodesis, FFMT and bony procedure. Each of these procedures is used either alone or in combination for particular clinical scenarios. Aims and objectives of this study was to restoration of shoulder abduction and external rotation, elbow flexion and hand function are goal of treatment of adult traumatic brachial plexus injury. Age range was from 14 years to 55 years (mean age 26 years). Male were 95 and female were 10 cases. Time from trauma to surgery was valid 3 months to 9 months. Motor cycle accident was most common mechanism of injury. Upper plexus (C5, C6) injury was 52 cases, extended upper plexus (C5, C6 & C7) injury was 19 cases and global brachial plexus injury was 34 cases. When there is high suspicion of root avulsions, early exploration and reconstruction is indicated. Operate these patients 2-3 months after their injury. In other patients without high suspicion of root avulsion, we routinely perform exploration between 3 to 6 months after injury when no adequate sign of recovery are present. Common reconstructive options are any injury with neuroma in continuity with conductive nerve action potential (NAP): only neurolysis or any injury with nerve rupture or postganglionic neuroma not conducting nerve Action potential (NAP) and good proximal nerve: Direct repair or repair with nerve graft or nerve transfer if possible. Follow up period from 6 months to 6 years. The best results were obtained in C5, C6 and C5, C6 & C7 brachial plexus injury cases. SAN to SSN, Oberlin II and long head triceps motor branch to anterior division of axillary nerve transfer for C5 & C6 injury or upper plexus injury and in addition intercostals nerve to anterior division of axillary nerve and AIN branch of median nerve to ECRB for C5, C6 & C7 (extended upper plexus injury). Extra-plexus and intra-plexus neurotization was done in global brachial plexus injury cases and 5 cases by contra-lateral C7 to median nerve by vascularised ulnar nerve graft and only 2 cases contra-lateral C7 to lower trunk through pre spinal or pre tracheal route were done and only one case by FFMT. Few cases gain shoulder abduction and elbow flexion but no improvement of hand function and most cases even by FFMT still in follow up. Results of surgical treatment of upper and extended upper brachial plexus injury cases were satisfactory on the other hand recovery of shoulder abduction and elbow flexion was acceptable and comparable to other study in global brachial plexus injury and recovery of hand function were poor.
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Affiliation(s)
- N K Datta
- Professor Dr Nakul Kumar Datta, Ex-Chairman, Department of Orthopaedic Surgery, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
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Habib SA, Fatema N, Alam MM, Ahasan SA, Rahman MF, Ear-E-Mahabub SM, Akand AI, Singha CK, Anwar AA, Khondoker MN, Islam MA. A Case of Congenital Coronary Ostial Stenosis with Systemic Lupus Erythematosus. Mymensingh Med J 2023; 32:590-592. [PMID: 37002776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
Congenital coronary ostial stenosis or atresia (COSA) is a spectrum of rare developmental conditions with different pathophysiologic mechanisms and clinical implications. Although COSA includes various entities, these entities have two features in common. First the defect is congenital, although it may progress during pre-natal and post natal life. Second the developmental defect may cause ostial or proximal coronary obstruction (that is stenosis or atresia). Coronary ostial stenosis or atresia affects the left coronary (L-COSA) more frequently than it does the right coronary artery. Systemic Lupus Erythematosus (SLE) is not an uncommon disease in young female, but combination of congenital coronary ostial stenosis with systemic lupus erythematosus make the case very rarer. Here we presented A 17 years old girl got admitted to Bangabandhu Sheikh Mujib Medical University, Bangladesh for evaluation of on and off chest pain of CCS-III to CCS-IV for 1 day on 17 September 2019.
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Affiliation(s)
- S A Habib
- Dr SM Ahsan Habib, Associate Professor, Department of Cardiology, University Cardiac Centre, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
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11
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Islam MA, Alam SM, Reza AM. Urosepsis and Bacteriuria in Patients Undergoing TRUS-Guided Prostate Biopsy. Mymensingh Med J 2023; 32:330-337. [PMID: 37002742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
A prostate gland biopsy is a test to remove small sample of prostate tissue to be examined under a microscope. A biopsy may be done when a blood test shows a high level of prostate-specific antigen (PSA) or after a digital rectal examination finds an abnormal prostate or a lump. Transrectal ultrasound (TRUS) guided biopsy is a commonly performed procedure for the detection of prostate cancer. It is associated with serious complication like urosepsis. Although the incidence of post-TRUS urosepsis is low, when it occurs it is typically serious and leads to hospitalization. Antibiotics are used prior, during and after the procedure to prevent infections as a result of TRUS biopsy. Ciprofloxacin is being used as antibiotic of choice for a long time. Antibiotic prophylaxis may prevent such complications. This cross-sectional descriptive type of observational study was taken place in Dhaka Medical College Hospital, Dhaka, Bangladesh from January 2010 to December 2011 among purposively selected 70 patients with an aim to determine the urosepsis and bacteriuria after TRUS guided prostate biopsy. Patients attending the Urology OPD in DMCH having of LUTS and other non-specific symptoms were evaluated by history, physical examination including digital rectal examination (DRE) and necessary investigations like serum PSA to identify the potential candidates. Patients with abnormal DRE findings and increased PSA level were included in this study and those who had any painful anal and rectal condition, bleeding diathesis, anticoagulant therapy and any known allergy to lidocaine, previously undergone prostrate biopsy and those who refused to give the informed consent were excluded from this study. Data were collected on variables of interest using a structured case record form. Data were processed and analyzed using Statistical package for social science (SPSS), version 17.0. Frequency of bacteriuria and urosepsis was measured according to urine and blood culture report. Sensitivity pattern was also seen. According to this study, the frequency of bacteriuria and urosepsis was 17.1% and 5.7% respectively. Most common uropathogen was E coli both in urine and blood culture. Organisms (100.0%) were found resistant to ciprofloxacin and amoxicillin. Most of the pathogens were sensitive to tobramycin, gentamycin and cefipime. A potentially dangerous ciprofloxacin resistant organism (ESBL producing E. coli) was found positive in 25.0% of culture positive patients.
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Affiliation(s)
- M A Islam
- Dr Mohammad Aminul Islam, Assistant Professor, Department of Urology, Mymensingh Medical College, Mymensingh, Bangladesh; E-mail:
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Islam MA, Lomax S, Doughty AK, Islam MR, Thomson PC, Clark CEF. Revealing the diversity of internal body temperature and panting response for feedlot cattle under environmental thermal stress. Sci Rep 2023; 13:4879. [PMID: 36966196 PMCID: PMC10039931 DOI: 10.1038/s41598-023-31801-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 03/17/2023] [Indexed: 03/27/2023] Open
Abstract
Core body temperature (CBT) regulation is crucial for mammalian wellbeing and survival. Cattle pant to dissipate excess heat to regulate CBT when ambient conditions exceed thermoneutral zones. However, to date, neither the variability in cattle heat response, the lagged response of CBT to thermal indices, nor the diurnal patterns of thermal indices, CBT and panting have been reported in the literature. We decomposed thermal indices, CBT and panting time-series data for 99 feedlot heifers across three discrete heat events into diurnal, trend and residual components. Both raw and decomposed data were analysed to explore the lagged CBT and panting responses and the association between series. We show ambient thermal conditions impact CBT with a 1-h lag despite a lag of between 1.5 to 3 h from raw data. Average individual panting scores were used to identify heat-susceptible and heat-tolerant cattle. Heat-susceptible cattle showed greater CBT (P < 0.01) between 8:00 and 23:00 and greater panting duration (P < 0.05) between 10:00 and 18:00 than heat-tolerant cattle under the same thermal conditions and these variations followed a similar pattern despite differences in cattle breed. This new information enables targeted amelioration and selection of individuals against heat susceptibility.
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Affiliation(s)
- M A Islam
- Livestock Production and Welfare Group, School of Life and Environmental Sciences, Sydney Institute of Agriculture, University of Sydney, Camden, New South Wales, 2570, Australia.
- Department of Dairy Science, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Dumki, Patuakhali, 8602, Bangladesh.
| | - S Lomax
- Livestock Production and Welfare Group, School of Life and Environmental Sciences, Sydney Institute of Agriculture, University of Sydney, Camden, New South Wales, 2570, Australia
| | - A K Doughty
- Allflex Livestock Intelligence, Allflex Australia Pty Ltd., 33 Neumann Road, Capalaba, Queensland, 4157, Australia
| | - M R Islam
- Livestock Production and Welfare Group, School of Life and Environmental Sciences, Sydney Institute of Agriculture, University of Sydney, Camden, New South Wales, 2570, Australia
| | - P C Thomson
- Sydney School of Veterinary Science, University of Sydney, Camden, New South Wales, 2570, Australia
| | - C E F Clark
- Livestock Production and Welfare Group, School of Life and Environmental Sciences, Sydney Institute of Agriculture, University of Sydney, Camden, New South Wales, 2570, Australia
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Islam MN, Habib MR, Khandakar MMH, Rashid MH, Sarker MAH, Bari MS, Islam MZ, Alam MK, Sarkar MM, Jahan R, Mahzabin R, Islam MA. Repeat breeding: prevalence and potential causes in dairy cows at different milk pocket areas of Bangladesh. Trop Anim Health Prod 2023; 55:120. [PMID: 36930420 DOI: 10.1007/s11250-023-03537-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 03/06/2023] [Indexed: 03/18/2023]
Abstract
The objective of this study was to figure out the prevalence and probable causes of repeat breeding (RB) in dairy cows. Hence, a cross-sectional study was conducted on randomly selected 265 dairy farms in Sirajganj, Bogura, Rangpur, Satkhira, and Munshiganj districts of Bangladesh from December 2018 to February 2019. Data were collected through a direct interview method using a survey questionnaire. The reproductive organs of repeat breeder cows were examined for pathological, infectious, and functional reasons, and genital tract abnormalities. Additionally, the influence of nutrition, season, and age on the frequency of RB was recorded. The prevalence of RB was 28% among the 3824 cows investigated. Among the total repeat breeder cases, 72.54% of RB cases were found in Holstein-Friesian crossbred, 23.90% in Jersey crossbred, 1.50% in Sahiwal crossbred, and 2.06% in indigenous cows. The prevalence of RB was significantly highest (P < 0.01) in Satkhira (44.35%) and lowest in the Munshiganj district (15.87%). Data indicated that a major proportion of cows significantly (P < 0.05) faced RB problems due to functional causes (34.18%), followed by pathological causes (28.01%), genital tract abnormalities (21.32%), and infectious causes (16.49%). Furthermore, the cows were remarkably (P < 0.001) affected in RB during the summer season and nutritional deficient diseases like milk fever (70%). Age (3-7 years) had a significant (P < 0.001) effect on the RB occurrence (90%) in crossbred cows. However, particular focus should be given to systematic breeding, balanced nutrition, artificial inseminator efficiency, and hygienic inseminating tools to reduce RB incidence in high-yielding crossbred cows.
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Affiliation(s)
- M N Islam
- Department of Dairy Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
- Bangladesh Milk Producer's Co-Operative Union Limited (Milk Vita), Tejgaon, Dhaka, 1208, Bangladesh
| | - M R Habib
- Department of Dairy Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - M M H Khandakar
- Department of Dairy Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - M H Rashid
- Department of Dairy Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - M A H Sarker
- Department of Dairy Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - M S Bari
- Department of Dairy Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - M Z Islam
- Department of Dairy Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - M K Alam
- Bangladesh Livestock Research Institute, Savar, Dhaka, Bangladesh
| | - M M Sarkar
- Palli Karma-Sahayak Foundation (PKSF), Agargaon, Dhaka, Bangladesh
| | - R Jahan
- Department of Animal Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - R Mahzabin
- Department of Animal Breeding and Genetics, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - M A Islam
- Department of Dairy Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh.
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Khandaker MU, Nawi SNM, Lam SE, Sani SFA, Islam MA, Islam MA, Naseer KA, Osman H, Bradley DA. Thermoluminescent characterization and defect studies of graphite-rich media under high dose neutron exposure. Appl Radiat Isot 2023; 196:110771. [PMID: 36933313 DOI: 10.1016/j.apradiso.2023.110771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 02/28/2023] [Accepted: 03/07/2023] [Indexed: 03/11/2023]
Abstract
Thermoluminescence (TL) materials have a broad variety of uses in various fields, such as clinical research, individual dosimetry, and environmental dosimetry, amongst others. However, the use of individual neutron dosimetry has been developing more aggressively lately. In this regard, present study establishes a relationship between the neutron dosage and the optical property changes of graphite-rich materials caused by high doses of neutron radiation. This has been done with the intention of developing a novel, graphite-based radiation dosimeter. Herein, the TL yield of commercially graphite-rich materials (i.e. graphite sheet, 2B and HB grade pencils) irradiated by neutron radiation with doses ranging from 250 Gy to 1500 Gy has been investigated. The samples were bombarded with thermal neutrons as well as a negligible amount of gamma rays, from the nuclear reactor TRIGA-II installed at the Bangladesh Atomic Energy Commission. The shape of the glow curves was observed to be independent of the given dosage, with the predominant TL dosimetric peak maintained within the region of 163 °C-168 °C for each sample. By studying the glow curves of the irradiated samples, some of the most well theoretical models and techniques were used to compute the kinetic parameters such as the order of kinetics (b), activation energy (E) or trap depth, frequency factor (s) or escape probability, and trap lifetime (τ). All of the samples were found to have a good linear response over the whole dosage range, with 2B grade of polymer pencil lead graphite (PPLGs) demonstrating a higher level of sensitivity than both HB grade and graphite sheet (GS) samples. Additionally, the level of sensitivity shown by each of them is highest at the lowest dosage that was given, and it decreases as the dose increases. Importantly, the phenomenon of dose-dependent structural modifications and internal annealing of defects has been observed by assessing the area of deconvoluted micro-Raman spectra of graphite-rich materials in high-frequency areas. This trend is consistent with the cyclical pattern reported in the intensity ratio of defect and graphite modes in previously investigated carbon-rich media. Such recurrent occurrences suggest the idea of employing Raman microspectroscopy as a radiation damage study tool for carbonaceous materials. The excellent responses of the key TL properties of the 2B grade pencil demonstrate its usefulness as a passive radiation dosimeter. As a consequence, the findings suggest that graphite-rich materials have the potential to be useful as a low-cost passive radiation dosimeter, with applications in radiotherapy and manufacturing.
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Affiliation(s)
- Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, 47500, Bandar Sunway, Selangor, Malaysia; Department of General Educational Development, Faculty of Science and Information Technology, Daffodil International University, DIURd, Dhaka, 1341, Bangladesh; MEU Research Unit, Middle East University, Airport Rd., 11831, Amman, Jordan.
| | - S N Mat Nawi
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, 47500, Bandar Sunway, Selangor, Malaysia; Department of Medical Sciences, School of Medical and Life Science, 47500, Bandar Sunway, Selangor, Malaysia
| | - S E Lam
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, 47500, Bandar Sunway, Selangor, Malaysia
| | - S F Abdul Sani
- Department of Physics, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Mohammad Amirul Islam
- Institute of Nuclear Science & Technology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Ganakbari, Ashulia, Dhaka, 1349, Bangladesh
| | - M A Islam
- Department of Electrical Engineering, Faculty of Engineering, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - K A Naseer
- Department of Physics, Farook College (Autonomous), Kozhikode, 673632, India
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 2425, Taif, 21944, Saudi Arabia
| | - D A Bradley
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, 47500, Bandar Sunway, Selangor, Malaysia; Department of Physics, University of Surrey, Guildford, GU2 7XH, UK
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Islam FMA, Islam MA, Hosen MA, Lambert EA, Maddison R, Lambert GW, Thompson BR. Associations of physical activity levels, and attitudes towards physical activity with blood pressure among adults with high blood pressure in Bangladesh. PLoS One 2023; 18:e0280879. [PMID: 36735692 PMCID: PMC9897582 DOI: 10.1371/journal.pone.0280879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 12/28/2022] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Physical activity is important for the control of high blood pressure (hypertension). We aimed to investigate the associations of current physical activity levels, sedentary time, knowledge of and attitude towards physical activity with blood pressure in people with hypertension in a rural area in Bangladesh. METHODS A total of 307 adults aged 30 to 75 years with hypertension were recruited from the Banshgram Union of Narial district as part of a cluster-randomized control trial. Current blood pressure was measured as the outcome variable. Associated variables included physical activity at work, travel to and from places, recreational activity, metabolic equivalent task (MET)-min, sedentary time, and awareness of and attitudes towards physical activity. Rasch analysis was used to compute a combined score from the five awareness of and attitudes towards physical activity items and categorized into 0-40 (towards negative attitude), 41-60 score (mixed attitude) and 61-100 (positive attitude). We used a generalised linear model to analyze the data. RESULTS Participants (n = 68, 22.1%) who engaged in vigorous-intensity physical activity that causes large increases in breathing or heart rate like carrying or lifting heavy loads, digging or construction work for at least 10 minutes continuously had lower systolic blood pressure (SBP) (mean (95% confidence interval (CI)), 143.6 (140.1, 147.2)) compared to those who did not take part in a vigorous-intensity physical activity (mean (95% CI), 150 (147.6, 152.3)). MET-min less than 600 min/week was significantly associated with higher SBP 153.8 (148.1, 159.6) than MET-min 600-2999 min/week 148.0 (143.0, 152.9) and MET-min>3000 min/week 146.9 (144.5, 149.3), p = 0.001 for trend. Sitting time more than four hours a day was associated with higher DBP 91.4 (89.7, 93.0) compared to those who had sitting time less than fours a day 88.6 (87.1, 90.1). People with positive attitudes were associated with a reduced SBP of 10.6 (0.36, 20.8) mmHg and DBP 5.88 (0.47, 11.3) compared to the people who had a negative attitude towards taking part in physical activity. CONCLUSIONS Participating in high physical activity and positive attitudes towards physical activity were associated with lower blood pressure levels. Physical activity awareness programs should be implemented to increase awareness of health benefits and increase participation in high physical activity.
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Affiliation(s)
- Fakir M. Amirul Islam
- School of Health Sciences, Swinburne University of Technology, Hawthorn, VIC, Australia
- Organisation for Rural Community Development (ORCD), Dariapur, Narail, Bangladesh
- * E-mail:
| | | | - Mohammad Arzan Hosen
- Organisation for Rural Community Development (ORCD), Dariapur, Narail, Bangladesh
| | - Elisabeth A. Lambert
- School of Health Sciences, Swinburne University of Technology, Hawthorn, VIC, Australia
- Iverson Health Innovation Research Institute, Swinburne University of Technology, Hawthorn, VIC, Australia
| | - Ralph Maddison
- Faculty of Health, Institute for Physical Activity and Nutrition (IPAN), Deakin University, Geelong, VIC, Australia
| | - Gavin W. Lambert
- School of Health Sciences, Swinburne University of Technology, Hawthorn, VIC, Australia
- Iverson Health Innovation Research Institute, Swinburne University of Technology, Hawthorn, VIC, Australia
| | - Bruce R. Thompson
- School of Health Sciences, Swinburne University of Technology, Hawthorn, VIC, Australia
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Sarker MZ, Rahim MZ, Patawary KU, Dutta UK, Chowdhury NK, Islam MA, Hanif MA. Functional and Speech Outcome of Unilaterally Cochlear Implanted Children after 1 year of Implantation in NIENT: A Retrospective Study. Mymensingh Med J 2023; 32:213-220. [PMID: 36594323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Hearing loss can be congenital or acquired. Most of the time congenital hearing loss means profound sensorineural hearing loss. The invention of cochlear implantation has already an established role in improving the hearing capability in congenital sensorineural hearing loss. To speak properly after cochlear implant, one needs to go for speech therapy or audio-verbal therapy. Speech therapy has become an integral part of the cochlear implantation program. In Bangladesh cochlear implantation (CI) programs started around 15 years ago, which was limited to Bangabandhu Sheikh Mujib Medical University (BSMMU) and Combined Military Hospital (CMH). Our government takes initiative to provide this service to poor and lower income people. National Institute of ENT (NIENT) was the first government hospital where CI started in 2018 and the project is now ongoing. After CI auditory, verbal therapy (AVT) was given at the same institute. No study has not been done to find out the outcome of AVT. NIENT has taken steps to find out the functional and speech outcome of cochlear implanted children considering the two standard criteria: CAP and SIR score. This retrospective study was done to find out the auditory verbal outcome of unilaterally CI children in different ages and conducted at department of Audiology, National Institute of ENT, Tejgaon, Dhaka, Bangladesh from January 2021 to June 2021. The children who underwent cochlear implants and took the auditory verbal therapy were included in this study. Though it is a retrospective study, a written informed consent has been taken from the patient's parents as the cases are minor in age. From the record review, CAP and SIR scores were recorded four times: before implantation 1 time, after cochlear implantation 3 times (At the end of 3, 6 and 12 months after starting of AVT of Cochlear implantees). From the study it has been observed that out of 50 implantees, 48.0% of children's age range was in between >3 to ≤5 years. Most of the implantees were from rural areas and also from lower income group. The study showed significant association with CAP and SIR score at the end of one year of AVT. No significant association was found in different age groups with scores of CAP and SIR. But the parent's education showed significant association with CAP score at the end one year of AVT. Though the age of the recipient is not significantly associated with the AVT outcome but maternal education plays an important role in improving CAP and SIR score. So, maternal education or understanding along with professional speech therapy is vital for better AVT outcome.
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Affiliation(s)
- M Z Sarker
- Professor Dr Md Zakaria Sarker, Professor, Department of Otology, National Institute of ENT, Dhaka, Bangladesh; E-mail:
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Sinclair M, Lee NYP, Hötzel MJ, de Luna MCT, Sharma A, Idris M, Islam MA, Iyasere OS, Navarro G, Ahmed AA, Curry M, Burns GL, Marchant JN. Consumer attitudes towards egg production systems and hen welfare across the world. Front Anim Sci 2022. [DOI: 10.3389/fanim.2022.995430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Concurrent with the growth of the human population, global egg production has experienced exponential increase in the last 50 years. This exponential growth has been made possible through the refinement of intensive egg production systems, predominately, conventional cages. The significant amount of liberties conventional cages withhold from hens has also formed the basis of growing challenge to the industry in many countries, with some major regions such as the European Union making sweeping regulatory reform. These reforms were driven by well-organised animal advocacy groups, fuelled by aligning consumer attitudes and behaviours. In the absence of concerted hen welfare advocacy and cage-free movement in much of the rest of the world, it is difficult to know what consumer attitudes and knowledge may exist outside the European Union. This study aimed to contribute to this knowledge by surveying 4,292 members of the public at random across 14 geographically and culturally diverse countries (Australia, Bangladesh, Brazil, Chile, China, India, Malaysia, Nigeria, Pakistan, Philippines, Sudan, Thailand, UK and USA). The findings show that most participants across all countries eat eggs, most state that it matters to them that hens do not suffer in the process of producing the eggs they eat, and importantly, a majority of participants in most countries (except Nigeria) would prefer (to varying degrees) to purchase eggs from hens not kept in cages. Participant knowledge of the dominant system of egg production in their country varied greatly, with frequent uncertainty. This suggests a need for clarity and consistency in communication to consumers during campaigns, in order to mitigate confusion. Most importantly, although these similarities existed across the countries, important regional differences were also present. This underscores the importance of understanding animal and agricultural issues by geopolitical region, and of locally tailoring strategy. The findings of this research will be of strategic use to egg producers and animal welfare advocates alike in understanding and appropriately catering to consumers in the future.
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Ali MS, Chowdhury LH, Baten MA, Islam S, Khan N, Islam MA, Saha BK, Mamun MA, Mushtabshirah L, Mokarabin M. Comparative Study between Acacia Nilotica versus Povidone Iodine in Topical Treatment of Omphalocele Major. Mymensingh Med J 2022; 31:925-930. [PMID: 36189534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Well established and common practice in conservative management of omphalocele major is escharotics therapy with different topical agents. Among them mercurochrome, alcohol, silver salts, povidone iodine, acacia nilotca paste are commonly used. It is a comparative study between application of acacia nilotica paste and povidone iodine solution as a primary non surgical treatment of omphalocele major regarding efficacy and safety of these two topical agents. A double blind randomized controlled study was conducted at the department of Paediatric Surgery, Mymensingh Medical College Hospital, Mymensingh, Bangladesh from July 2016 to June 2019. In this study 20 cases of omphalocele major and randomly divided into two equal groups. Group A and Group B treated with acacia nilotica paste and povidone iodine solution respectively. Gastroschisis, ruptured-omphalocele major or omphalocele minor excluded in this study. The size of the fascial defect in cm, time required for full oral feeding tolerance and duration of hospital stay were evaluating parameters. Patients with Group A tolerated full oral feeding earlier, shorter total hospital stay duration and low mortality rate than those from Group B. Application of acacia nilotica is a safe and effective treatment of omphalocele major regarding rapid full oral feeding tolerance, shorter hospital stay and low mortality rate.
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Affiliation(s)
- M S Ali
- Dr Mohammad Showkot Ali, Assistant Professor, Department of Paediatric Surgery, Mymensingh Medical College (MMC), Mymensingh, Bangladesh;
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Islam MA, Mohammed T, Mamoon TB, Chowdhury NH, Khan SR, Rahman ML. Hemithyroidectomy in the Treatment of Papillary Thyroid Carcinoma: A Prospective Study of 300 Patients. Mymensingh Med J 2022; 31:1013-1019. [PMID: 36189546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The correct approach to treat low-risk intra thyroidal papillary thyroid carcinoma (PTC) is still controversial. The traditional paradigm of treating all patients with thyroid cancer with total thyroidectomy, radioactive iodine and suppressive thyroid hormone therapy is no longer suitable. Many authors advocate unilateral thyroidectomy to minimize perioperative morbidity. The purpose of this study was to determine an effective treatment strategy for patients with small unilateral papillary thyroid carcinoma in a low risk group. This is a prospective study of 300 patients who were diagnosed as papillary thyroid carcinoma by preoperative FNAC or postoperative histopathology. The age of the patients' was ranged between 15 to 45 years. The criteria were: tumor ≤4cm, unilateral involvement, cytological non-aggressive subtype, absence of lymph node (LN) involvement and extra thyroidal extension (ETE) on ultrasonography (USG) and absence of clinical distant metastases. Duration of the study period was 30 years from 1989 to 2019. The study was conducted in tertiary care hospital in Bangladesh. All patients had undergone hemi thyroidectomy and followed up by a median period of 25 months (range, 6 to 166 months). Following hemithyroidectomy, among 300 patients, 267 patients (89.0%) did not show any recurrence of disease. Thirty three (33) patients (11.0%) came with locoregional recurrence of disease in clinical and USG findings without any distant metastasis. Maximum patients were between the ages 31-40 year followed by 21-30 years. Female was out number male in the ratio. Though further large scale study should require to determine the optimal treatment option for low risk PTC, but this study can lead to a result that hemi thyroidectomy is now-a-days a better surgical option for PTC even up to tumor size of ≤4cm.
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Affiliation(s)
- M A Islam
- Professor Md Ashraful Islam, Professor and Head, Department of Otolaryngology-Head & Neck Surgery, Bangladesh Medical College, Dhaka, Bangladesh; E-mail:
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Ahmed MA, Islam MA. Outcome of Reduction of Subcondylar Fracture in Retromandibular Transparotid Approach. Mymensingh Med J 2022; 31:931-936. [PMID: 36189535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Among all mandibular fracture 25.0 to 40.0% fractures are regarded as condylar and subcondylar fracture. Commonly, reduction of subcondylar fracture is done under general anaesthesia. Different approaches were found for the surgical treatment of condylar fractures besides intraoral approaches such as the pre-auricular, submandibular, rhytidectomy, retromandibular. This is a prospective observational study which was performed to find out the outcome of retromandibular approach for subcondylar fracture treatment of mandible i.e. to find out correction of occlusion and establishment of jaw function, infection, hematoma, salivary fistula, facial nerve damage, haematoma etc complication. Surgical treatment of subcondylar fractures of 15 patients was done in Dhaka Dental College and Hospital and different private centres in Dhaka and Mymensingh, Bangladesh from January 2019 to December 2021 in retromandibular transparortid approach. The patients were evaluated for hematoma, infection, Frey's syndrome, salivary fistula, facial nerve damage, occlusion, fracture site stability, chronic pain in the fracture site and temporomandibular joint movements in the post operative period. Facial nerve injury was not observed. Postoperative swelling of parotid region developed in first two patients. Single patient developed paresis in zygomatic branch of facial nerve causing left upper eyelid muscle weak and after two weeks of physiotherapy it became normal. Salivary fistula developed in three patients which resolved spontaneously. Outcome of this approach like good anatomy and function was found in all cases. Good articular function was obtained in all the cases. By this retromandibular approach condylar fracture reduction; fixation and healing were managed comfortably. However, direct vision of facial nerve fibres has limited the risk of facial nerve injury.
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Affiliation(s)
- M A Ahmed
- Dr Mohammed Ayaz Ahmed, Assistant Professor (Oral & Maxillofacial Surgery), Dental Unit, Mymensingh Medical College, Mymensingh, Bangladesh; E-mail:
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Akter S, Mirza TT, Mirza N, Swarna IJ, Raushan A, Ara R, Maya KN, Flora SN, Shamsi S, Islam MA, Wasim M. Clinical and Demographic Predictor of the Advanced Stage of Carcinoma Cervix in a Tertiary Level Hospital of Bangladesh. Mymensingh Med J 2022; 31:954-962. [PMID: 36189538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Though cervical cancer is a preventable disease it is the most progressive and devastating diseases posing a threat of mortality for women of developing countries. Majority of the cases present to hospital at advanced stage when treatment is less feasible. Objective is to determine the factors associated with the advanced stage presentation to the hospital, socio-demographic factor, patterns of complications and histological types among patients with carcinoma cervix. This was an observational descriptive type of cross-sectional study carried out in the department of Obstetrics and Gynecology, Mymensingh Medical College Hospital, Mymensingh, Bangladesh from 15 January to 27 September 2017. Women who were newly confirmed to have cervical cancer by histology were enrolled. Stages IIB and above was considered as advanced disease. The patients were interviewed face to face by the researcher for the purpose of collection of data. Then the patients were examined by the researcher for certain sings and those would be recorded in the check-list. Histopathological report was noted in data collection sheet. In this study data analysis was done by SPSS version 22.0. Total 66 clinically and histologically confirmed advanced ca-cervixes were taken up during this study. Most common stage was stage III, 49(74.2%) out of 66 population. Majority of female were found 34(51.5%) in age group 51-60. More than half of population 54(81.8%) were living with their husband and 12(18.1%) were widow at the time of study. High level of illiteracy among women and their problematic health seeking behavior for gynecological symptoms are responsible for advanced diagnosis of cervical cancer.
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Affiliation(s)
- S Akter
- Dr Salma Akter, Medical Officer, Department of Obs & Gynae, Mymensingh Medical College Hospital (MMCH), Mymensingh, Bangladesh; E-mail: E-mail:
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22
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Rahman S, Siddique U, Choudhury S, Islam N, Roy A, Basu P, Anand SS, Islam MA, Shahi MS, Nayeem A, Chowdhury MTI, Chowdhury MSJH, Taylor JP, Baker MR, Baker SN, Kumar H. Comparing Stop Signal Reaction Times in Alzheimer's and Parkinson's Disease. Can J Neurol Sci 2022; 49:662-671. [PMID: 34321129 DOI: 10.1017/cjn.2021.184] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND To investigate the relative contributions of cerebral cortex and basal ganglia to movement stopping, we tested the optimum combination Stop Signal Reaction Time (ocSSRT) and median visual reaction time (RT) in patients with Alzheimer's disease (AD) and Parkinson's disease (PD) and compared values with data from healthy controls. METHODS Thirty-five PD patients, 22 AD patients, and 29 healthy controls were recruited to this study. RT and ocSSRT were measured using a hand-held battery-operated electronic box through a stop signal paradigm. RESULT The mean ocSSRT was found to be 309 ms, 368 ms, and 265 ms in AD, PD, and healthy controls, respectively, and significantly prolonged in PD compared to healthy controls (p = 0.001). The ocSSRT but not RT could separate AD from PD patients (p = 0.022). CONCLUSION Our data suggest that subcortical networks encompassing dopaminergic pathways in the basal ganglia play a more important role than cortical networks in movement-stopping. Combining ocSSRT with other putative indices or biomarkers of AD (and other dementias) could increase the accuracy of early diagnosis.
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Affiliation(s)
- Simin Rahman
- Department of Neurology, RGCM Research Centre, Institute of Neurosciences, Kolkata, India
| | - Ummatul Siddique
- Department of Neurology, RGCM Research Centre, Institute of Neurosciences, Kolkata, India
| | - Supriyo Choudhury
- Department of Neurology, RGCM Research Centre, Institute of Neurosciences, Kolkata, India
| | - Nazrul Islam
- National Institute of Neurosciences & Hospital, Agargoan, Dhaka, Bangladesh
| | - Akash Roy
- Department of Neurology, RGCM Research Centre, Institute of Neurosciences, Kolkata, India
| | - Purba Basu
- Department of Neurology, RGCM Research Centre, Institute of Neurosciences, Kolkata, India
| | - Sidharth Shankar Anand
- Department of Neurology, RGCM Research Centre, Institute of Neurosciences, Kolkata, India
| | | | | | - Abu Nayeem
- National Institute of Neurosciences & Hospital, Agargoan, Dhaka, Bangladesh
| | | | | | | | - Mark R Baker
- Medical School, Newcastle University, Newcastle upon Tyne, UK
- Departments of Neurology and Clinical Neurophysiology, Royal Victoria Infirmary, Newcastle upon Tyne, UK
| | - Stuart N Baker
- Medical School, Newcastle University, Newcastle upon Tyne, UK
| | - Hrishikesh Kumar
- Department of Neurology, RGCM Research Centre, Institute of Neurosciences, Kolkata, India
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23
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Sinclair M, Lee NYP, Hötzel MJ, de Luna MCT, Sharma A, Idris M, Derkley T, Li C, Islam MA, Iyasere OS, Navarro G, Ahmed AA, Khruapradab C, Curry M, Burns GL, Marchant JN. International perceptions of animals and the importance of their welfare. Front Anim Sci 2022. [DOI: 10.3389/fanim.2022.960379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Our perceptions shape our intentions, our motivations, our behavior, and in doing so, our reality. In this age of the Anthropocene, our perceptions also impact the lives and welfare of other animals. One of the key principles associated with the success of international animal welfare initiatives is an understanding of local audiences and contexts. Additionally, culture by country has been demonstrated to be a significant determinant of attitudes to animals and their welfare. Within this study, we surveyed 4,291 members of the general public on their perceptions of animals and animal welfare across 14 geographically and culturally diverse countries; Australia, Bangladesh, Brazil, Chile, China, India, Malaysia, Nigeria, Pakistan, Philippines, Sudan, Thailand, United Kingdom and United States. For many countries included in this study, this constitutes the first time research of this nature has been conducted. Most participants across all countries agreed that the welfare of both farmed animals and companion animals was important to them, and that laws that protect that welfare were also important. The notion that humans always care more for companion animals in comparison to farmed animals is challenged, as is the notion that care for the welfare of animals is a trademark of highly developed nations alone. It is proposed that the utility of the animals, and proximity by way of exposure are more significant than companionship in some countries, particularly those that are engaged with subsistence farming. Important differences exist by country, and the findings have been presented within the context of each country, for ease of incorporation into localized strategy where suitable.
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24
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Shaha M, Majumder S, Hossain MS, Jahan M, Rahmat R, Asma R, Islam MA, Rahman MH, Das KC, Sarker PK, Mahtab MA, Akbar SMF, Salimullah M. Identification of a novel variant of hepatitis B virus isolated from patient co-infected with hepatitis C virus. Virus Res 2022; 319:198859. [PMID: 35809696 DOI: 10.1016/j.virusres.2022.198859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 07/05/2022] [Accepted: 07/05/2022] [Indexed: 11/16/2022]
Abstract
Hepatitis B virus (HBV) is a major public health concern worldwide. Co-infection of hepatitis B patients with other pathogens intensifies the severity of the disease. We report a novel variant of hepatitis B virus (HBV) in Bangladesh isolated from a patient co-infected with hepatitis C virus (HCV) who exhibited liver cirrhosis. From 150 collected plasma samples, we sequenced HBV complete genome from one HBV-HCV co-infected patient. The complete genome was analysed using bioinformatics tools, NCBI BLAST, Geno2Pheno, and SnapGene software. The strain belongs to genotype A and subgenotype A1. Upon analysing the complete genome of this strain, we found a frameshift deletion of 54 nucleotides at the pre-S2 region, a functional regulator of HBV surface protein. Furthermore, we observed a Y126H mutation in the polymerase protein of this strain. This is the first report with such an unusual pre-S deletion event of the HBV genome in an HCV-co-infected patient associated with liver cirrhosis. These findings may inform scientists about genomic modifications in the HBV genome associated with HCV co-infection.
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Affiliation(s)
- Modhusudon Shaha
- Microbial Biotechnology Division, National Institute of Biotechnology, Savar, Dhaka 1349, Bangladesh; Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria 3800, Australia
| | - Sumen Majumder
- Microbial Biotechnology Division, National Institute of Biotechnology, Savar, Dhaka 1349, Bangladesh; Department of Microbiology, Jagannath University, Dhaka 1000, Bangladesh
| | - Md Saddam Hossain
- Microbial Biotechnology Division, National Institute of Biotechnology, Savar, Dhaka 1349, Bangladesh
| | - Munira Jahan
- Department of Virology, Bangabandhu Sheikh Mujib Medical University Hospital, Dhaka 1000, Bangladesh
| | - Raad Rahmat
- Department of Mathematics and Natural Sciences, School of Data and Sciences, BRAC University, Mohakhali, Dhaka 1212, Bangladesh
| | - Ridwana Asma
- Department of Virology, Bangabandhu Sheikh Mujib Medical University Hospital, Dhaka 1000, Bangladesh
| | | | - Md Hadisur Rahman
- Molecular Biotechnology Division, National Institute of Biotechnology, Savar, Dhaka 1349, Bangladesh
| | - Keshob Chandra Das
- Molecular Biotechnology Division, National Institute of Biotechnology, Savar, Dhaka 1349, Bangladesh
| | - Palash Kumar Sarker
- Microbial Biotechnology Division, National Institute of Biotechnology, Savar, Dhaka 1349, Bangladesh
| | - Mamun Al Mahtab
- Department of Hepatology, Bangabandhu Sheikh Mujib Medical University Hospital, Dhaka 1000, Bangladesh
| | | | - Md Salimullah
- Molecular Biotechnology Division, National Institute of Biotechnology, Savar, Dhaka 1349, Bangladesh.
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25
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Alauddin M, Hossain MZ, Rahman MM, Roy MK, Minto MR, Islam MA, Islam MK, Islam MS, Saha MK, Mahmud AA, Siddiquee TH, Seraji SI. Management of Neglected Rupture of Tendoachilles with Long Gap by Flexor Hallucis Longus Tendon Transfer. Mymensingh Med J 2022; 31:861-868. [PMID: 35780375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The tendo achilles is one of most important tendon in human body which often injured through direct trauma or indirect stress on a weakened tendon. Longer the duration after injury the injured parts likely to move apart, fibrosis and degeneration leading to difficulty in repair or reconstruction. Usually a phase of 4 weeks or more without specific treatment is regarded as chronic or neglected rupture. Different authors described many management protocols about the tendo achilles rupture but there is no procedure of choice for neglected rupture with long gap. Prospective case series of 21 patients of neglected tendo achilles rupture with long gap treated with flexor hallucis longus tendon (FHLT) transfer was taken for study from January 2019 to December 2020 in Mymensingh Medical College Hospital, Bangladesh. Average age of patients was 39.47 years with range 22-65 years. Fifteen (15) cases of traumatic rupture in this study with average age 32.66 years and pathologic 6 cases with average age 56.5 years were recorded. We grafted FHLT from channel by incising Henry's knot. Krackow et al.'s technique was followed for tendon mobilization and bone fixation. We made procedure simpler and cheaper; instead of using interference screw the sutured tendon pulled through the heel and anchored over rubber tube or button by Cole method. Post-operative complications were less with one patient with superficial infection which eventually recovered 3 cases of mild pain and 2 cases of numbness. Questionnaire for surgical outcome measure are satisfactory in 19 patients (90.47%). Final follow up AOFAS score at 6 month (91.61±5.41) was highly significant (p<0.001) in comparison to preoperative score (38.71±9.78). These are comparable to other study. Above mentioned scores indicate the reliability of the surgical system. But our study is a prospective case series with minimum cases. To establish the best procedure for neglected tendo achilles rupture with long gap we recommend further study with larger group and Randomized Controlled Trial (RCT) study among different procedure.
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Affiliation(s)
- M Alauddin
- Dr Md Alauddin, Assistant Professor, Department of Orthopaedics, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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26
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Islam MA, Hossain AKMA. Magnetic properties, magnetocaloric effect, and critical behaviors in Co 1-x Cr x Fe 2O 4. RSC Adv 2022; 12:17362-17378. [PMID: 35765446 PMCID: PMC9190788 DOI: 10.1039/d2ra02223k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 05/31/2022] [Indexed: 11/21/2022] Open
Abstract
This research work focuses on the magnetic properties, nature of the magnetic phase transition, magnetocaloric effect, and critical scaling of magnetization of various Co1−xCrxFe2O4 (x = 0, 0.125, 0.25, 0.375, and 0.5). The tunability of the magnetic moment, exchange interactions, magnetocrystalline anisotropy constant, and microwave frequency using Cr3+ content has been found. The nature of the magnetic phase transitions for all the Cr3+ concentrations exhibits as second order which has been confirmed from the analysis of critical scaling, universal curve scaling, and scaling analysis of the magnetocaloric effect. The critical exponent analysis for all samples was performed from the modified Arrott-, and Kouvel–Fisher-plots. These critical analyses suggest that x = 0.125, 0.250, and 0.375 samples show reliable results in the magnetocaloric effect with relative cooling power (RCP) values in the range of 128–145 J kg−1. On the other hand, x = 0.00, and 0.500 samples exhibit inconsistent RCP values. The universal curve scaling also confirms the reliability of the magnetocaloric effect of the investigated samples. Magnetic entropy change as a function of temperature for various Co1−xCrxFe2O4 at an applied magnetic field of 5 T.![]()
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Affiliation(s)
- M A Islam
- Department of Physics, Bangladesh University of Engineering and Technology Dhaka-1000 Bangladesh
| | - A K M Akther Hossain
- Department of Physics, Bangladesh University of Engineering and Technology Dhaka-1000 Bangladesh
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27
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Alam MM, Rahman MM, Parvin T, Al-Amin M, Khaled MF, Bajracharya P, Islam MA, Mahjabeen F, Dey D, Shakil SS. Simple Treadmill Score: Does It Have Better Predictability for Coronary Artery Disease? Mymensingh Med J 2022; 31:490-497. [PMID: 35383771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Coronary artery disease is one of the most prevalent causes of increasing mortalitiy in current time. Early detection of such dreadful condition by a non-invasive test like exercise treadmill test, is a much-required option to prevent future complications like myocardial infarction. The aim of this study was to find out how different the predictability of simple treadmill score in comparison to other treadmill scores namely the well-known Duke treadmill score and Cleveland clinic score. In a cross-sectional analytical study of total 130 individuals with stable angina were included according to criteria set before the study. The treadmill scores of these patients were calculated and compared to coronary angiogram findings where coronary artery angiograms were done according to clinical need. Simple treadmill test had similar predictability for coronary artery disease when we compared it with much-applied Duke Treadmill Test and Cleveland Clinic Score- which is currently used for mortality prediction. Receiver Operator Characteristics (ROC) Curve showd all scores had around 0.7 area under the curve (AUC) which is highly statistically significant (p<0.0001) though simple treadmill score in females has higher sensitivity (92.3%). Simple treadmill score can be considered to exclude female patients from undergoing invasive investigation as it has higher sensitivity than other currently practiced treadmill scores i.e., Duke treadmill score.
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Affiliation(s)
- M M Alam
- Dr Md Mashiul Alam, Resident, Department of Internal Medicine, Bridgeport Hospital/ Yale University, CT, USA; E-mail:
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28
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Sarkar MAR, Rahman MC, Rahaman MS, Sarker MR, Islam MA, Balie J, Kabir MS. Adoption Determinants of Exotic Rice Cultivars in Bangladesh. Front Sustain Food Syst 2022. [DOI: 10.3389/fsufs.2022.813933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Agrarian Bangladesh relies heavily on rice. Since independence, many varieties have been released and targeted to increase productivity, farmers' income, and food security. However, few gained widespread adoption. Moreover, farmers in the border regions are adopting exotic cultivars, and it's gradually spreading throughout the country. But, the reasons for adopting exotic rice cultivars are still unexplored. Using field data from 1,260 farm households and 42 focus group discussions, this study analyzes farmers' preferences for domestic and exotic rice varieties and identifies the factors of adoption linked to design national breeding programs and farmers' welfare. Findings show, exotic varieties (69%) monopolized the area coverage in the dry season, whereas in the wet season, domestic varieties (58%) dominated. Farmers select exotic varieties for their better yield and price, low production costs, high grain quality, resistance to pests and diseases, and ability to withstand stresses. Risk analysis shows domestic varieties adoption is riskier with lower returns. The empirical findings indicate that household characteristics, access to institutions and infrastructure, varietal characteristics, and weather condition, all play a significant role in adoption decisions. National breeding should focus on developing rice varieties in response to market demands and farmer preferences toward sustainable food security in Bangladesh.
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29
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Mazumder L, Hasan M, Rus'd AA, Islam MA. In-silico characterization and structure-based functional annotation of a hypothetical protein from Campylobacter jejuni involved in propionate catabolism. Genomics Inform 2022; 19:e43. [PMID: 35012287 PMCID: PMC8752978 DOI: 10.5808/gi.21043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 12/09/2021] [Indexed: 11/20/2022] Open
Abstract
Campylobacter jejuni is one of the most prevalent organisms associated with foodborne illness across the globe causing campylobacteriosis and gastritis. Many proteins of C. jejuni are still unidentified. The purpose of this study was to determine the structure and function of a non-annotated hypothetical protein (HP) from C. jejuni. A number of properties like physiochemical characteristics, 3D structure, and functional annotation of the HP (accession No. CAG2129885.1) were predicted using various bioinformatics tools followed by further validation and quality assessment. Moreover, the protein-protein interactions and active site were obtained from the STRING and CASTp server, respectively. The hypothesized protein possesses various characteristics including an acidic pH, thermal stability, water solubility, and cytoplasmic distribution. While alpha-helix and random coil structures are the most prominent structural components of this protein, most of it is formed of helices and coils. Along with expected quality, the 3D model has been found to be novel. This study has identified the potential role of the HP in 2-methylcitric acid cycle and propionate catabolism. Furthermore, protein-protein interactions revealed several significant functional partners. The in-silico characterization of this protein will assist to understand its molecular mechanism of action better. The methodology of this study would also serve as the basis for additional research into proteomic and genomic data for functional potential identification.
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Affiliation(s)
- Lincon Mazumder
- Department of Microbiology, Jagannath University, Dhaka 1100, Bangladesh
| | | | - Ahmed Abu Rus'd
- Department of Microbiology, Jagannath University, Dhaka 1100, Bangladesh
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30
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Islam MA, Siddique H, Zhang W, Haque I. A Deep Neural Network-based Communication Failure Prediction Scheme in 5G RAN. IEEE Trans Netw Serv Manage 2022. [DOI: 10.1109/tnsm.2022.3229658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
| | - Hisham Siddique
- Department of Computer Science, Dalhousie University, Halifax, Canada
| | | | - Israat Haque
- Department of Computer Science, Dalhousie University, Halifax, Canada
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31
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Aziz MA, Smith O, Jackson HA, Tollington S, Darlow S, Barlow A, Islam MA, Groombridge JJ. Phylogeography of Panthera tigris in the mangrove forest of the Sundarbans. ENDANGER SPECIES RES 2022. [DOI: 10.3354/esr01188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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32
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Shaha M, Roy B, Islam MA. Detection of herpes simplex virus 2: a SYBR-Green-based real-time PCR assay. F1000Res 2021; 10:655. [PMID: 34900232 PMCID: PMC8634051 DOI: 10.12688/f1000research.53541.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/19/2021] [Indexed: 11/21/2022] Open
Abstract
The prevalence of Herpes simplex virus 2 (HSV2) is increasing at an alarming rate in the world. Most of the HSV2 cases are not diagnosed properly, although a range of molecular and serological diagnoses exist. Herein, we have reported a very rapid detection method specific for HSV2 using real-time PCR. The primers specific for HSV2 were designed using the Primer-BLAST tool and 120 base pairs of the polymerase gene were amplified using real-time PCR with SYBR Green dye. The designed primer pair was found highly efficient in detecting only HSV2 DNA, but not HSV1. The threshold cycle (Ct) value for HSV2 reactions by designed primers was found to be an average of 22.55 for a standard copy number of viral DNA that may denote the efficiency of the primers. The melting temperature (Tm) of the amplicon using designed primers (82.6
0C) was also higher than that using reference primers (about 78
0C), indicating the high GC content of the amplified template. The designed primer pair will help clinicians to detect the HSV2 DNA specifically and diagnose the associated disease rapidly.
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Affiliation(s)
- Modhusudon Shaha
- Microbial Biotechnology Division, National Institute of Biotechnology, Dhaka, Bangladesh
| | - Bithi Roy
- Agronomy, Bangladesh Agricultural University, Mymensingh, Mymensingh, Bangladesh
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33
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Aktar A, Ali MA, Haque MA, Hossain S, Jasmine T, Zaman K, Islam MA, Ahmad F, Sharmin M, Pandit P, Ali MS. Prevalence of Hepatitis B Virus Infection among Children with Liver Disease Admitted In Mymensingh Medical College Hospital. Mymensingh Med J 2021; 30:897-902. [PMID: 34605453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Hepatitis B virus infection is an important cause of liver disease. Hepatitis B Virus may present with varying degree of severity. In older children, 5-10% cases leading to chronic liver disease, cirrhosis and hepatocellular carcinoma. This descriptive cross sectional study was done to assess the prevalence of Hepatitis B Virus infection among hospitalized children with liver disease in pediatric department of Mymensingh Medical College Hospital, Bangladesh from December 2015 to October 2016. All the children of both sexes having age between six months to twelve years admitted in the pediatric ward with acute or chronic liver disease were included in this study by purposive sampling. A written consent was obtained from legal guardian of children before inclusion. Ethical clearance was obtained from competent authority. A detailed history was taken from parents in each case according to pre-designed questionnaire about demography of the patients and the risk factors of the liver disease. A thorough clinical examination and available relevant investigations like serological testing for HBV infection was done in all patients. We had figure out the seropositivity of HBV among patients having liver disease by doing HBsAg and Anti-HBc IgM. Progress of the patient was monitored by daily clinical examinations and by investigating HBsAg and Anti-HBc IgM. Finally data analysis was done by SPSS version 21.0. Among total 100 patients most (44%) patients were in 7-10 years old and most (62%) of the participants were male. Acute liver disease was 58% cases and chronic liver disease was 42% cases. HBsAg was positive in 1 case among acute liver disease and 5 cases among chronic cases. Total 6 (six) patients were found positive for HBsAg. Anti HBc IgM was positive in 4 patients among acute liver disease. Among these Anti HBc IgM positive (4) patients only one had both HBsAg and Anti HBc IgM positive. So, four patients were confirming suffered from acute viral hepatitis because they had anti HBc IgM positive. On the contrary 5 patients suffered from chronic hepatitis by hepatitis B because they were only HBsAg positive. So, in this study 9 patients (9%) were confirming suffered from HBV infection. Possible transmission factors of hepatitis B were history of (H/O) blood transfusion/trauma/parenteral injection, H/O umbilical sepsis, H/O maternal illness/infection during pregnancy. HBV still is a major cause of morbidity. All the children with liver disease should be routinely tested for HBV.
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Affiliation(s)
- A Aktar
- Dr Asma Aktar, Junior Consultant, Department of Paediatrics, Mymensingh Medical College Hospital (MMCH), Mymensingh, Bangladesh; E-mail:
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34
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Górecki M, Enamullah M, Islam MA, Islam MK, Höfert SP, Woschko D, Janiak C, Pescitelli G. Synthesis and Characterization of Bis[( R or S)- N-1-(X-C 6H 4)ethyl-2-oxo-1-naphthaldiminato-κ 2N, O]-Λ/Δ-cobalt(II) (X = H, p-CH 3O, p-Br) with Symmetry- and Distance-Dependent Vibrational Circular Dichroism Enhancement and Sign Inversion. Inorg Chem 2021; 60:14116-14131. [PMID: 34477372 PMCID: PMC8456410 DOI: 10.1021/acs.inorgchem.1c01503] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
The enantiopure Schiff
bases (R or S)-N-1-(X-C6H4)ethyl-2-hydroxy-1-naphthaldimine
{X = H [(R or S)-HL1], p-CH3O [(R or S)-HL2],
and p-Br [(R- or S)-HL3]} react with cobalt(II) acetate to give bis[(R or S)-N-1-(X-C6H4)ethyl-2-oxo-1-naphthaldiminato-κ2N,O]-Λ/Δ-cobalt(II) {X = H
[Λ/Δ-Co-(R or S)-L1], p-CH3O [Λ/Δ-Co-(R or S)-L2], and p-Br [Λ/Δ-Co-(R or S)-L3]} (1–3), respectively. Induced Λ and Δ chirality originates
at the metal center of the C2-symmetric
molecule in pseudotetrahedral geometry. Differential scanning calorimetry
analyses explored the thermal stability of the complexes, which undergo
reversible phase transformation from crystalline solid to isotropic
liquid phase for 1 and 3 but irreversible
phase transformation for 2. Like other cobalt(II) complexes,
compounds 1–3 exhibit a continuous
ensemble of absorption and circular dichroism bands, which span from
the UV to IR region and can be collected into a superspectrum. Infrared
vibrational circular dichroism (IR-VCD) spectra witness the coupling
between Co2+-centered low-lying electronic states and ligand-centered
vibrations. The coupling produces enhanced and almost monosignate
VCD spectra, with both effects being mode-dependent in terms of the A or B symmetry (in the C2 point group) and distance from the Co2+ core. Chiroptical superspectra of naphthaldiminatocobalt(II)
complexes 1−3 exhibit a continuous
ensemble of absorption
and circular dichroism bands from the UV to IR region, including peculiar
and almost monosignate vibrational circular dichroism (VCD) spectra
dominated by the coupling between Co2+-centered low-lying
electronic states and ligand-centered vibrations, which depend on
the normal-mode symmetry and distance from the Co2+ core
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Affiliation(s)
- Marcin Górecki
- Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa 56126, Italy.,Institute of Organic Chemistry, Polish Academy of Sciences, Warsaw 01-224, Poland
| | - Mohammed Enamullah
- Department of Chemistry, Jahangirnagar University, Dhaka 1342, Bangladesh
| | | | | | - Simon-Patrick Höfert
- Institute of Inorganic Chemistry and Structural Chemistry, Heinrich-Heine-University of Düsseldorf, Düsseldorf 40225, Germany
| | - Dennis Woschko
- Institute of Inorganic Chemistry and Structural Chemistry, Heinrich-Heine-University of Düsseldorf, Düsseldorf 40225, Germany
| | - Christoph Janiak
- Institute of Inorganic Chemistry and Structural Chemistry, Heinrich-Heine-University of Düsseldorf, Düsseldorf 40225, Germany
| | - Gennaro Pescitelli
- Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa 56126, Italy
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Khalil MM, Ahmed F, Rahman MM, Islam MA, Majumder TK, Kibria MG, Islam MS, Islam MM, Akhter M, Islam A, Podder MK, Alam MN, Munmun UK, Lubna EK, Hossain MA, Mostafa T. Frequency of Eosinophilic Esophagitis among Patients with Gastroesophageal Reflux Symptoms in an Academic Hospital of Bangladesh: A Cross Sectional Study. Mymensingh Med J 2021; 30:744-750. [PMID: 34226464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Eosinophilic esophagitis (EoE) is a disease of modern era. It was first described 40 years back. Since then it has drawn an immense interest among the clinicians. It is diagnosed by the presence of eosinophils count ≥15/HPF on esophageal biopsied mucosa in patients with symptoms of esopohageal dysfunction. It is more prevalent among patients with gastroesophageal reflux disease. As its symptoms overlap with that of gastroesophageal reflux disease (GERD), it is frequently overlooked & misdiagnosed which increases patients' sufferings. No data is available in Bangladesh. The objective of the study was to find out the frequency of eosinophilic esophagitis among patients with gastroesophageal reflux symptoms. The study was conducted at the Outpatient department of the department of Gastroenterology of Dhaka Medical College Hospital, Dhaka, Bangladesh from September 2018 to April 2019. One hundred and thirty three (133) consecutive patients with symptoms suggestive of gastroesophageal reflux disease based on validated questionnaire underwent upper GI endoscopy. Biopsies were taken from proximal and distal esophagus as well as any other endoscopically abnormal esophageal mucosal lesion. Among 133 patients with gastroesophageal reflux symptoms, 7 patients (5.3%) were found to be positive for eosinophilic esophagitis. Mean age at diagnosis was 37.28±13.38 years. It was more common in younger age group. Female patients (56%) were more than male patients (44%). Heart burn was the major symptom followed by acid regurgitation. Nocturnal cough showed statistically significant relationship with eosinophilic esophagitis. Although the frequency is low, it may be considered as a differential diagnosis among patients with GERD.
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Affiliation(s)
- M M Khalil
- Dr Md Musab Khalil, Assistant Registrar, Sheikh Russel Gastroliver Institute and Hospital (SRGIH), Mohakhali, Dhaka, Bangladesh; E-mail:
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Tao W, Yurdagul A, Kong N, Li W, Wang X, Doran AC, Feng C, Wang J, Islam MA, Farokhzad OC, Tabas I, Shi J. siRNA nanoparticles targeting CaMKIIγ in lesional macrophages improve atherosclerotic plaque stability in mice. Sci Transl Med 2021; 12:12/553/eaay1063. [PMID: 32718990 DOI: 10.1126/scitranslmed.aay1063] [Citation(s) in RCA: 114] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 02/26/2020] [Accepted: 06/15/2020] [Indexed: 12/13/2022]
Abstract
Atherosclerotic lesional macrophages express molecules that promote plaque progression, but lack of mechanisms to therapeutically target these molecules represents a major gap in translational cardiovascular research. Here, we tested the efficacy of a small interfering RNA (siRNA) nanoparticle (NP) platform targeting a plaque-destabilizing macrophage molecule-Ca2+/calmodulin-dependent protein kinase γ (CaMKIIγ). CaMKIIγ becomes activated in advanced human and mouse plaque macrophages and drives plaque necrosis by suppressing the expression of the efferocytosis receptor MerTK. When macrophage-targeted siCamk2g NPs were administered to Western diet-fed Ldlr -/- mice, the atherosclerotic lesions showed decreased CaMKIIγ and increased MerTK expression in macrophages, improved phagocytosis of apoptotic cells (efferocytosis), decreased necrotic core area, and increased fibrous cap thickness-all signs of increased plaque stability-compared with mice treated with control siRNA NPs. These findings demonstrate that atherosclerosis-promoting genes in plaque macrophages can be targeted with siRNA NPs in a preclinical model of advanced atherosclerosis.
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Affiliation(s)
- Wei Tao
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Arif Yurdagul
- Department of Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Na Kong
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Wenliang Li
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Xiaobo Wang
- Department of Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Amanda C Doran
- Department of Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Chan Feng
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Junqing Wang
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Mohammad Ariful Islam
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Omid C Farokhzad
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
| | - Ira Tabas
- Department of Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA. .,Department of Physiology and Cellular Biophysics, Columbia University Irving Medical Center, New York, NY 10032, USA.,Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Jinjun Shi
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
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Yasmin S, Khandaker MU, Nawi SNM, Sani SFA, Bradley DA, Islam MA. The potential of decorative building materials (marble) for retrospective thermoluminescence dosimetry. Appl Radiat Isot 2021; 175:109782. [PMID: 34082304 DOI: 10.1016/j.apradiso.2021.109782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 05/06/2021] [Accepted: 05/11/2021] [Indexed: 10/21/2022]
Abstract
Among the various types of decorative materials used in Bangladeshi dwellings, the marble/marble stone is one of the most common ones that used largely for enhancing the beauty and/or aristocracy of the dwelling environment. In this study, the most commonly used, six types of marble stones, have been analyzed for retrospective accident dosimetry. With the interest of characterizing several key thermoluminescence properties to examine their potentiality for dosimetry, annealing - irradiation - readout steps have been done chronologically which comprises the analysis of glow curves, relative sensitivity, dose dependence, repeatability and fading. Considering the various TL parameters, marble 'Carrara' imported from Italy present relatively better capability for reconstruction of radiation dose in the dose range of 10-50 Gy. From fading result, it is clear that for reconstruction of absorbed dose up to four weeks of post exposure, the marble 'Carrara' is found to be the most reliable media among the studied marble types. The Zeff values for the various marble samples are found to be in the range of 13.65-19.12, comparing favorably in replace of TLD-200 (Zeff = 16.3) which can be used for low-level environmental radiation dosimetry. Present work constitutes the first study to investigate the potentials of marble stone for reconstruction of absorbed dose in the range of 10-50 Gy dose.
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Affiliation(s)
- Sabina Yasmin
- Department of Physics, Chittagong University of Engineering and Technology, Chattogram, Bangladesh.
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, 47500 Bandar Sunway, Selangor, Malaysia
| | - S N Mat Nawi
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, 47500 Bandar Sunway, Selangor, Malaysia; Department of Physics, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - S F Abdul Sani
- Department of Physics, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - D A Bradley
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, 47500 Bandar Sunway, Selangor, Malaysia; Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - M A Islam
- Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
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Rahman M, Islam MA, Das KC, Salimullah M, Mollah MZI, Khan RA. Effect of gamma radiation on microbial load, physico-chemical and sensory characteristics of common spices for storage. J Food Sci Technol 2021; 58:3579-3588. [PMID: 34366475 DOI: 10.1007/s13197-021-05087-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 02/25/2021] [Accepted: 03/26/2021] [Indexed: 12/18/2022]
Abstract
The effect of gamma radiation on the decontamination of microbial population, physico-chemical, radiation sensitivity and sensory characteristics of common spices for storage were evaluated. Spices were irradiated with gamma doses of 0 (as control), 2, 4, 6, 8 and 10 kGy, packed in the glass vials and stored at room temperature (22 ± 2°C) in the laboratory. In this research, Bacillus, Salmonella and Listeria species were identified in un-irradiated spice samples. Results also indicated that gamma radiation reduced the total microbial population compared to control and optimum gamma radiation doses (6 kGy for red chili and turmeric; 4 kGy for cumin, coriander, garlic and black pepper; 2 kGy for ginger powder samples) were identified for decontamination of the organisms in the studied spices. It was concluded that no significant differences before and after gamma radiation were observed in physico-chemical, nutritional and sensory properties but significantly changed in microbial load in spices samples.
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Affiliation(s)
- Mahfuzur Rahman
- Department of Nuclear Science & Engineering, Military Institute of Science and Technology, Dhaka, 1216 Bangladesh
| | - M A Islam
- Institute of Nuclear Science & Technology, Atomic Energy Research Establishment, Savar, Dhaka, 1349 Bangladesh
| | - Keshob C Das
- National Institute of Biotechnology, Savar, Dhaka, 1349 Bangladesh
| | - Md Salimullah
- National Institute of Biotechnology, Savar, Dhaka, 1349 Bangladesh
| | - M Z I Mollah
- Institute of Radiation and Polymer Technology, Atomic Energy Research Establishment, Savar, Dhaka, 1349 Bangladesh
| | - Ruhul A Khan
- Institute of Radiation and Polymer Technology, Atomic Energy Research Establishment, Savar, Dhaka, 1349 Bangladesh
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Alam MT, Alam QS, Alam MK, Islam MA, Saha MK, Rahman MM, Hossain MZ, Roy MK, Islam MK, Hossain M, Haque AN, Minto MR. Core Decompression with Non Vascularized Fibular Graft as Modern Surgical Treatment of Early Hip Avascular Necrosis. Mymensingh Med J 2021; 30:323-328. [PMID: 33830109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Cellular death of bone due to impairment of the blood supply leading to collapse resulting in pain, and loss of joint function is known as avascular necrosis (AVN). The head of femur is the most common bone affected by avascular necrosis followed by talus and scaphoid. We evaluate the results of core decompression with non-vascularized fibular graft in avascular necrosis of femoral head. This quasi experimental study was done at Mymensingh Medical College Hospital, Dhaka Medical College Hospital and some other private hospitals of Bangladesh. The study includes patients who underwent core decompression and non-vascularized fibular grafting in avascular necrosis of femoral head from January 2017 to December 2018. In this study we evaluated total 20 patients and majority of the patients belongs to the group of 20-30 years. Out of 20 patients, 8 of them were unilaterally involved rest 12 had bilateral involvement. Out of 24 hips of bilateral involvement 4 were grade III and IV (Ficat and Arlet classification) therefore not included in the study. So, we study 28 hips only. The average success rate was 90% after core decompression and non-vascularized fibular bone grafting. Harris hip score of 60 on presentation had poorer outcome. Patients with less than 80 degrees of flexion had poorer outcome.
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Affiliation(s)
- M T Alam
- Dr Mohammad Tariqul Alam, Assistant Professor, Paediatric Orthopaedics, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Nahid KA, Akter K, Saqueeb SN, Zaman MS, Khalilullah MI, Jesmin S, Iqbal MG, Islam MA, Wadud MA, Aziz AS, Hoque MM. Association of Low Serum Free Testosterone with Carotid Atherosclerosis in Male. Mymensingh Med J 2021; 30:466-472. [PMID: 33830130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The cross sectional descriptive type of observational study was aimed to evaluate the association of serum free testosterone in 59 patients of carotid atherosclerotic male {<50% stenosis (n=26); >50% stenosis (n=33) } from March 2015 to February 2016 in the Department of Radiology & Imaging of Bangabandhu Sheikh Mujib Medical University (BSMMU) & National Institute of Neurosciences (NINS), Dhaka, Bangladesh. Twenty seven patients who had normal carotid doppler findings were taken as control. Serum total testosterone and sex hormone binding globulin was measured by chemiluminescence micro particle immunoassay and free testosterone was done by using Vermeulen formula. Concentration of free testosterone differed significantly among groups (p=0.004) and it was significantly lower in <50% stenosed group. Logistic regression analysis revealed that low free testosterone (free testosterone ≤0.24 nmol/L) was independently associated with development of carotid atherosclerosis (p=0.04, OR 3.07, 95% CI 1.14-9.30). In conclusion low serum free testosterone was associated with carotid atherosclerosis in male.
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Affiliation(s)
- K A Nahid
- Dr Khondakar Alwan Nahid, Assistant Professor, Department of Biochemistry, Eastern Medical College, Cumilla, Bangladesh; E-mail:
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Rahman MA, Khan MA, Akter MR, Islam MA, Khan MK. Proportion of Low Back Pain among Physicians Working in a Tertiary Level Hospital of Bangladesh. Mymensingh Med J 2021; 30:262-266. [PMID: 33830101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Low back pain (LBP) is a common problem and is an important public health issue. A major proportion of LBP is concomitant with prolong and repetitive awkward postures, related with occupation like miners, health workers and professional drivers. Physicians are exposed to a wide range of occupational risk factors which results in LBP. A variety of occupational and personal factors are responsible for increased risk of low back pain among physicians. This cross sectional descriptive study was carried out at Mymensingh Medical College Hospital during the period of January 2018 to June 2018, to estimate the proportion of LBP among physicians. Data were collected from purposively selected 102 physicians of different levels by face to face interview using a case record form. Informed written consent of participants was taken prior to interview. Data were analyzed by using SPSS version 20.0. The study results revealed that majority (60.8%) of the physicians were in the age group of 31-50 years. Mean age of the physicians was 49.9 years with a standard deviation (SD) of 3.61 years. More than three fourth (79, 77.5%) of the physicians were male and 23(22.5%) were female. Out of 102 physicians more than two third (70, 68.6%) had LBP while 32(31.4%) did not have any LBP. Proportion of low back pain among physician was 68.6%. Low back pain was found in all age group. Among the physicians having low back pain, 55(78.6%) were male and 15(21.4%) were female. Among 102 physicians, 45(44.1%) had different types of comorbidities while 57(55.9%) did not have any comorbidities. Among the co-morbidities HTN, DM, Dyslipidemia, CHD and asthma were common. Results of the study concluded that 68.6% physicians had low back pain. Physicians of age group 31-60 years (88.5%) and male (78.6%) experienced LBP more. Further multi-centric large scale case control study is recommended to determine the risk factors of LBP among physicians of Bangladesh.
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Affiliation(s)
- M A Rahman
- Dr Mohammad Azizur Rahman, Assistant Professor & Head, Department of Physical Medicine & Rehabilitation, Mymensingh Medical College (MMC), Bangladesh; E-mail:
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Shetve VV, Bhowmick S, Alissa SA, Alothman ZA, Wabaidu SM, Asmary FA, Alhajri HM, Islam MA. Identification of selective Lyn inhibitors from the chemical databases through integrated molecular modelling approaches. SAR QSAR Environ Res 2021; 32:1-27. [PMID: 33161767 DOI: 10.1080/1062936x.2020.1799433] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 07/19/2020] [Indexed: 06/11/2023]
Abstract
In the current study, the Asinex and ChEBI databases were virtually screened for the identification of potential Lyn protein inhibitors. Therefore, a multi-steps molecular docking study was carried out using the VSW utility tool embedded in Maestro user interface of the Schrödinger suite. On initial screening, molecules having a higher XP-docking score and binding free energy compared to Staurosporin were considered for further assessment. Based on in silico pharmacokinetic analysis and a common-feature pharmacophore mapping model developed from the Staurosporin, four molecules were proposed as promising Lyn inhibitors. The binding interactions of all proposed Lyn inhibitors revealed strong ligand efficiency in terms of energy score obtained in molecular modelling analyses. Furthermore, the dynamic behaviour of each molecule in association with the Lyn protein-bound state was assessed through an all-atoms molecular dynamics (MD) simulation study. MD simulation analyses were confirmed with notable intermolecular interactions and consistent stability for the Lyn protein-ligand complexes throughout the simulation. High negative binding free energy of identified four compounds calculated through MM-PBSA approach demonstrated a strong binding affinity towards the Lyn protein. Hence, the proposed compounds might be taken forward as potential next-generation Lyn kinase inhibitors for managing numerous Lyn associated diseases or health complications after experimental validation.
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Affiliation(s)
- V V Shetve
- Department of Bioinformatics, Rajiv Gandhi Institute of IT and Biotechnology, Bharati Vidyapeeth Deemed University , Pune, India
| | - S Bhowmick
- Department of Chemical Technology, University of Calcutta , Kolkata, India
| | - S A Alissa
- Chemistry Department, College of Science, Princess Nourah Bint Abdulrahman University , Riyadh, Saudi Arabia
| | - Z A Alothman
- Department of Chemistry, College of Science, King Saud University , Riyadh, Saudi Arabia
| | - S M Wabaidu
- Department of Chemistry, College of Science, King Saud University , Riyadh, Saudi Arabia
| | - F A Asmary
- Department of Chemistry, College of Science, King Saud University , Riyadh, Saudi Arabia
| | - H M Alhajri
- Department of Chemistry, College of Science, King Saud University , Riyadh, Saudi Arabia
| | - M A Islam
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester , Manchester, UK
- School of Health Sciences, University of Kwazulu-Natal , Durban, South Africa
- Department of Chemical Pathology, Faculty of Health Sciences, University of Pretoria and National Health Laboratory Service Tshwane Academic Division , Pretoria, South Africa
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Rahman SM, Sazzad F, Wadud MA, Uddin MA, Roy SP, Sarkar PK, Islam MA, Saklayen SM, Khalilullah MI, Rokonujjaman M, Kibria G, Hoque MR, Ahmed NU. Low Cardiac Output Syndrome: Incidence after Mitral Valve Replacement with or without Preservation of Mitral Valve Apparatus. Mymensingh Med J 2021; 30:164-170. [PMID: 33397869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Standard mitral valve replacement in patients with chronic mitral valve regurgitation and mitral valve stenosis consistently results in a decrease in early postoperative left ventricular ejection performance. Some studies showed that preservation of mitral valve leaflet and subvalvular apparatus can reduce postoperative left ventricular dysfunction. On the basis of the concept, this randomized clinical trial comparing mitral valve replacement with preservation of mitral subvalvular apparatus and conventional mitral valve replacement performed in National Institute of Cardiovascular Diseases (NICVD), Dhaka, Bangladesh, in the period of July 2010 to December 2011. We included 60 patients of mitral regurgitation and mitral stenosis, among them 30 patients underwent mitral valve replacement with preservation of mitral subvalvular apparatus (Group A) and 30 patients underwent conventional mitral valve replacement (Group B). There was no significant difference between two groups in terms of peri-operative variables. But there was significant higher incidence of Low cardiac output (LOS) syndrome [36.7% vs. 6.9% (p<0.05)] and congestive heart failure in Group B than Group A. The duration of ICU stay was also significantly higher in conventional mitral valve replacement group [113.23±11.30 hours vs. 96.23±20.02 (p=0.001)]. Additionally, there was significantly less fall of left ventricular ejection fraction in preservation of mitral subvalvular apparatus group [preop 65.27±5.45, at discharge 54.31±3.78, after 3 months 58.28±5.20 (p<0.0001)] than conventional group [preop 66.43±4.58, at discharge 46.43±3.87, after 3 months 46.55±3.63 (p<0.0001)]. In this study left ventricular ejection fraction was used as measure of left ventricular function. We postulate that, this relative preservation of left ventricular ejection fraction was likely the result of preservation of mitral subvalvular apparatus.
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Affiliation(s)
- S M Rahman
- Dr Syed Mosfiqur Rahman, Registrar, Cardiac Surgery, Ibrahim Cardiac Hospital & Research Institute (ICH&RI), Dhaka, Bangladesh; E-mail:
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Islam MA, Lomax S, Doughty AK, Islam MR, Clark CEF. Timing of eating during transition impacts feedlot cattle diet and liveweight gain. Animal 2020; 15:100137. [PMID: 33573939 DOI: 10.1016/j.animal.2020.100137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 11/02/2020] [Accepted: 11/09/2020] [Indexed: 11/19/2022] Open
Abstract
The timing of eating, relative to when feed is offered, is affected by the social rank of feedlot cattle due to limited feed bunk space. As cattle can select feed based on dietary preference, the timing of eating for cattle in feedlot may be associated with the ingested diet composition. Our objectives were to determine the nutritive value and timing of feed ingested by 100 feedlot cattle during transition and the association of timing of eating with feeding behaviours and average daily gain (ADG). Cattle behaviour and timing of eating were determined on 100 feedlot cattle using accelerometer-based ear tag sensors from days 3 to 6 post feedlot induction (observation period), and the ongoing impact of this period on ADG was determined for the full feed period (75 days). To determine eating patterns at the time of feed offer, cattle were grouped according to the number of days they were recorded as eating within 1 h of feed being offered across 4 observation days, G0: not present across 4 days, G1: present for 1 day, G2: 2 days, G3: 3 days and G4: present for each of the 4 days. Total mixed ration (TMR) samples were collected for nutritive value analysis from four locations along the feed bunk from the time feed was offered and at hourly intervals thereafter for 7 h each day during the observation period. The composition of feed in the bunk changed across the 7 h of measurement (P < 0.05). The DM and CP of feed increased from 65 to 70% and 15 to 16%, respectively, and the NDF decreased from 36 to 32%. Thus, the preferred TMR feed component was the fibrous dietary fraction. However, the overall composition of the ingested diet for 7 h post feeding was similar between groups. Cattle in G0 had reduced eating time (0.7 vs 4.8%; P < 0.001), rumination time (4.5 vs 19.5%; P < 0.001) and ADG (1.0 vs 1.3 kg/d; P < 0.05) across the study, as compared with cattle in G4. Offering a more fibrous ration during feedlot transition, and customised cattle segregation and/or customised feeding regimes based on sensor derived feeding behaviour profiles during acclimation to feedlot can optimise ADG, animal welfare and feedlot profit.
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Affiliation(s)
- M A Islam
- Livestock Production and Welfare Group, School of Life and Environmental Sciences, University of Sydney, Camden, NSW 2570, Australia; Department of Dairy Science, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Dumki, Patuakhali 8602, Bangladesh.
| | - S Lomax
- Livestock Production and Welfare Group, School of Life and Environmental Sciences, University of Sydney, Camden, NSW 2570, Australia
| | - A K Doughty
- Allflex Australia Pty Ltd., 33 Neumann Road, Capalaba, QLD 4157, Australia
| | - M R Islam
- Livestock Production and Welfare Group, School of Life and Environmental Sciences, University of Sydney, Camden, NSW 2570, Australia
| | - C E F Clark
- Livestock Production and Welfare Group, School of Life and Environmental Sciences, University of Sydney, Camden, NSW 2570, Australia
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Rahman M, Islam MA, Zaved MM. Assessment of Essential and Potentially Toxic Elements and Possible Health Risks in Hylocereus undatus and Punica granatum. Biol Trace Elem Res 2020; 198:707-713. [PMID: 32048147 DOI: 10.1007/s12011-020-02072-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Accepted: 01/30/2020] [Indexed: 12/19/2022]
Abstract
This study evaluates essential and toxic element contents in dragon (Hylocereus undatus (Haworth) Britton and Rose) and pomegranate (Punica granatum L.) and possible health risks through the consumption of these fruits. Total concentrations of 15 chemical elements (Al, Br, Ca, Cd, Cl, Cr, Cu, Fe, Hg, K, Mn, Na, Ni, Pb, and Zn) were determined by instrumental neutron activation analysis (INAA) and atomic absorption spectrometry (AAS) techniques. This study indicates that these fruits are a vital source of essential elements for human health. It is observed that Pb concentrations were higher in both fruits whereas Cd concentrations were slightly higher than WHO/FAO tolerable levels only in pomegranate. The estimated daily intake (EDI) of the chemical elements was within the maximum tolerable daily intake (MTDI) values. Furthermore, target hazard quotient (THQ) values were also within the safe level (THQ < 1). However, the calculated target carcinogenic risk (TCR) values of Cd for pomegranate and Cr for dragon fruit were higher than the maximum limit (1.0 × 10-4) for children. Finally, this study will create public awareness about micronutrient contents as well as metal contaminations of the studied fruits.
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Affiliation(s)
- M Rahman
- Institute of Nuclear Science & Technology, Atomic Energy Research Establishment, Ganakbari, Ashulia, Dhaka, 1349, Bangladesh
- Department of Nuclear Science & Engineering, Military Institute of Science and Technology, Mirpur, Dhaka, 1216, Bangladesh
| | - M A Islam
- Institute of Nuclear Science & Technology, Atomic Energy Research Establishment, Ganakbari, Ashulia, Dhaka, 1349, Bangladesh.
- Department of Nuclear Science & Engineering, Military Institute of Science and Technology, Mirpur, Dhaka, 1216, Bangladesh.
| | - M M Zaved
- Department of Nuclear Science & Engineering, Military Institute of Science and Technology, Mirpur, Dhaka, 1216, Bangladesh
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Islam MS, Hasan SMM, Salzer JS, Kadzik M, Haque F, Haider N, Hossain MB, Islam MA, Rahman M, Kennedy E, Gurley ES. Human exposures to by-products from animals suspected to have died of anthrax in Bangladesh: An exploratory study. Transbound Emerg Dis 2020; 68:2514-2520. [PMID: 33174386 DOI: 10.1111/tbed.13921] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 10/18/2020] [Accepted: 11/05/2020] [Indexed: 11/30/2022]
Abstract
Anthrax is a zoonotic disease caused by the bacterium Bacillus anthracis that is considered endemic in Bangladesh, where cases among animals and people have been reported almost annually since 2009. Contaminated by-products from animals are suspected to play a role in transmission to people, but minimal information is known on the supply chain of these potentially contaminated products. Between April 2013 and May 2016, we conducted a qualitative study in 17 villages located in five districts in Bangladesh, which had experienced suspected anthrax outbreaks. The study explored how by-products from suspected animal cases were collected, discarded, processed, distributed and used by people. We conducted open-ended interviews, group discussions and unstructured observations of people's exposure to animal by-products. The practice of slaughtering acutely ill domestic ruminants before they died was common. Respondents reported that moribund animals were typically butchered, and the waste products were discarded in nearby rivers, ditches, bamboo bushes, or on privately owned land. Regardless of health status before death, very few carcasses were buried, and none were incinerated or burned. The hides were reportedly used to make wallets, belts, shoes, balls and clothing. Discarded bones were often ground into granular and powder forms to produce bone meal and fertilizer. Therefore, given anthrax is endemic in the study region, livestock with acute onset of fatal disease or found dead with no known cause of death may be an anthrax case and subsequently pose a health risk to those involved in the collection and processing of the carcass, as well as the end-user of these products. Improved bio-security practices and safe carcass disposal measures could reduce the risk of human exposure, but resource and other constraints make implementation a challenge. Therefore, targeting at-risk animal populations for vaccination may be the most effective strategy to reduce anthrax outbreaks, protect the supply chain and reduce the risk of exposure to B. anthracis.
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Affiliation(s)
- Md Saiful Islam
- icddr,b, Dhaka, Bangladesh.,School of Public Health and Community Medicine, University of New South Wales, Sydney, NSW, Australia
| | | | | | - Melissa Kadzik
- Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Farhana Haque
- icddr,b, Dhaka, Bangladesh.,Institute of Epidemiology Disease Control and Research, Dhaka, Bangladesh.,Institute for Global Health (IGH), University College London, United Kingdom
| | - Najmul Haider
- icddr,b, Dhaka, Bangladesh.,The Royal Veterinary College, University of London, Hertfordshire, UK
| | | | | | - Mahmudur Rahman
- Institute of Epidemiology Disease Control and Research, Dhaka, Bangladesh
| | - Erin Kennedy
- Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Emily S Gurley
- icddr,b, Dhaka, Bangladesh.,Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
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Perveen RA, Nasir M, Talha KA, Selina F, Islam MA. Systematic review on current antiviral therapy in COVID-19 pandemic. Med J Malaysia 2020; 75:710-716. [PMID: 33219182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
INTRODUCTION Currently, there are several attempts to find an effective antiviral drugs against the COVID-19. Although majority of the COVID-19 patients have mild to moderate clinical events, up to 5-10% may have severe, life threatening events that urgently require effective drugs. The purpose of this systematic review is to evaluate the effectiveness of antiviral therapies in the treatment of COVID-19. METHODS An extensive search was performed in PubMed, EMBASE, Cochrane Library for randomised controlled trials (RCTs), prospective case series studies that evaluated therapies COVID-19. The outcomes searched for were mortality, recovery rate, length of hospital stay and clinical improvement from January to May 15, 2020. Independent reviewers searched, identified, screened, and related studies were included. RESULTS Total of five RCTs on 439 patients and seventeen case series involving 1656 patients were found in the specified review period that reported the use of Lopinavir, Ritonavir, Remdesivir. Oseltamivir, Ribavirin in patients with COVID-19; but none of which showed efficacy of antiviral therapy. Such current findings impede researchers from recommending an appropriate and effective antiviral therapy against COVID-19, making it a serious concern for the global community. DISCUSSION In the present pandemic and any future epidemics, all the related authorities should pursue many more RCTs, cohort and case series for a prospective outcome in the management and treatment guidelines.
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Affiliation(s)
- R A Perveen
- Holy Family Red Crescent Medical College, Department of Pharmacology and Therapeutics, Bangladesh
| | - M Nasir
- Holy Family Red Crescent Medical College, Department of Pharmacology and Therapeutics, Bangladesh.
| | - K A Talha
- Sylhet Women's Medical College, Department of Neurosurgery, Bangladesh
| | - F Selina
- Sylhet Women's Medical College, Department of Anesthesiology and Intensive Care, Bangladesh
| | - M A Islam
- Japan East West Medical College, Department of ENT and Head-Neck Surgery, Bangladesh
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Islam MS, Sarkar T, Khan SH, Mostofa Kamal AH, Hasan SMM, Kabir A, Yeasmin D, Islam MA, Amin Chowdhury KI, Anwar KS, Chughtai AA, Seale H. COVID-19-Related Infodemic and Its Impact on Public Health: A Global Social Media Analysis. Am J Trop Med Hyg 2020; 103:1621-1629. [PMID: 32783794 PMCID: PMC7543839 DOI: 10.4269/ajtmh.20-0812] [Citation(s) in RCA: 350] [Impact Index Per Article: 87.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Infodemics, often including rumors, stigma, and conspiracy theories, have been common during the COVID-19 pandemic. Monitoring social media data has been identified as the best method for tracking rumors in real time and as a possible way to dispel misinformation and reduce stigma. However, the detection, assessment, and response to rumors, stigma, and conspiracy theories in real time are a challenge. Therefore, we followed and examined COVID-19-related rumors, stigma, and conspiracy theories circulating on online platforms, including fact-checking agency websites, Facebook, Twitter, and online newspapers, and their impacts on public health. Information was extracted between December 31, 2019 and April 5, 2020, and descriptively analyzed. We performed a content analysis of the news articles to compare and contrast data collected from other sources. We identified 2,311 reports of rumors, stigma, and conspiracy theories in 25 languages from 87 countries. Claims were related to illness, transmission and mortality (24%), control measures (21%), treatment and cure (19%), cause of disease including the origin (15%), violence (1%), and miscellaneous (20%). Of the 2,276 reports for which text ratings were available, 1,856 claims were false (82%). Misinformation fueled by rumors, stigma, and conspiracy theories can have potentially serious implications on the individual and community if prioritized over evidence-based guidelines. Health agencies must track misinformation associated with the COVID-19 in real time, and engage local communities and government stakeholders to debunk misinformation.
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Affiliation(s)
- Md Saiful Islam
- Program for Emerging Infections, Infectious Diseases Division, icddr,b, Dhaka, Bangladesh.,School of Public Health and Community Medicine, University of New South Wales, Sydney, Australia
| | - Tonmoy Sarkar
- Program for Emerging Infections, Infectious Diseases Division, icddr,b, Dhaka, Bangladesh
| | - Sazzad Hossain Khan
- Program for Emerging Infections, Infectious Diseases Division, icddr,b, Dhaka, Bangladesh
| | | | | | - Alamgir Kabir
- Centre for Primary Health Care and Equity, University of New South Wales, Sydney, Australia.,School of Public Health and Community Medicine, University of New South Wales, Sydney, Australia
| | - Dalia Yeasmin
- Program for Emerging Infections, Infectious Diseases Division, icddr,b, Dhaka, Bangladesh
| | - Mohammad Ariful Islam
- Program for Emerging Infections, Infectious Diseases Division, icddr,b, Dhaka, Bangladesh
| | | | - Kazi Selim Anwar
- Department of Infectious Diseases and Microbiology, School of Medicine, International University of Health and Welfare, Narita, Japan
| | - Abrar Ahmad Chughtai
- School of Public Health and Community Medicine, University of New South Wales, Sydney, Australia
| | - Holly Seale
- School of Public Health and Community Medicine, University of New South Wales, Sydney, Australia
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Rahman MM, Kabir SJ, Islam NA, Saha MK, Islam MS, Islam MA, Rahman MM, Hossain MZ, Rahman AM, Sayed A, Islam MN, Kabir KM, Hossain A. Outcome of Closed Reduction and Internal Fixation by Titanium Elastic Nailing for Fracture Shaft of Femur in Children. Mymensingh Med J 2020; 29:823-828. [PMID: 33116083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Femoral fractures are frequent in the pediatric population. Treatment options are based on the patient's age, fracture pattern, type of trauma and associated soft tissue injury. The traditional treatment method for pediatric femoral shaft fracture has been traction and spica casting. The immediate spica cast is safe and effective for children up to 6 years of age with isolated femoral fracture and acceptable reduction. Patients between 6 and 10 years of age can also be treated with spica casting with or without traction. This prospective study was done in the department of Orthopaedics, Mymensingh Medical College Hospital, Mymensingh, Bangladesh form from July 2015 to June 2019 to evaluate the outcome of closed reduction and internal fixation by titanium elastic nailing for fracture shaft of femur. Twenty patients, all presenting with fresh diaphyseal fractures of femur, treated with closed reduction and internal fixation by titanium elastic nailing. These patients were prospectively evaluated over a period of at least 18 months. Fractures were classified according to Association of Orthopaedics (AO) classification of shaft of femur fractures. According to AO classification, all were A1, A2, A3 fractures. Average age of the patients was 11±2.7 years; range was 6 to 16 years. There were 15 males and 5 females. Out of 20 cases treated with this method, stable fixation and union was achieved in all of them. Radiological union was achieved at an average of 10±2.3 weeks (8-15 weeks). The results were excellent in twelve patients (60%), successful in five (25%) and poor in three patients (15%) as per the scoring criteria for TEN. The effective treatment of diaphyseal fractures of the femur is intramedullary fixation by titanium elastic nailing in patients of the 6-16 years age group.
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Affiliation(s)
- M M Rahman
- Dr Md Matiur Rahman, Assistant Professor, Department of Orthopaedics, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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50
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Islam MA, Rice J, Reesor E, Zope H, Tao W, Lim M, Ding J, Chen Y, Aduluso D, Zetter BR, Farokhzad OC, Shi J. Adjuvant-pulsed mRNA vaccine nanoparticle for immunoprophylactic and therapeutic tumor suppression in mice. Biomaterials 2020; 266:120431. [PMID: 33099060 PMCID: PMC7528902 DOI: 10.1016/j.biomaterials.2020.120431] [Citation(s) in RCA: 105] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 09/15/2020] [Accepted: 09/30/2020] [Indexed: 12/15/2022]
Abstract
Synthetic mRNA represents an exciting cancer vaccine technology for the implementation of effective cancer immunotherapy. However, inefficient in vivo mRNA delivery along with a requirement for immune co-stimulation present major hurdles to achieving anti-tumor therapeutic efficacy. Here, we demonstrate a proof-of-concept adjuvant-pulsed mRNA vaccine nanoparticle (NP) that is composed of an ovalbumin-coded mRNA and a palmitic acid-modified TLR7/8 agonist R848 (C16-R848), coated with a lipid-polyethylene glycol (lipid-PEG) shell. This mRNA vaccine NP formulation retained the adjuvant activity of encapsulated C16-R848 and markedly improved the transfection efficacy of the mRNA (>95%) and subsequent MHC class I presentation of OVA mRNA derived antigen in antigen-presenting cells. The C16-R848 adjuvant-pulsed mRNA vaccine NP approach induced an effective adaptive immune response by significantly improving the expansion of OVA-specific CD8+ T cells and infiltration of these cells into the tumor bed in vivo, relative to the mRNA vaccine NP without adjuvant. The approach led to an effective anti-tumor immunity against OVA expressing syngeneic allograft mouse models of lymphoma and prostate cancer, resulting in a significant prevention of tumor growth when the vaccine was given before tumor engraftment (84% reduction vs. control) and suppression of tumor growth when given post engraftment (60% reduction vs. control). Our findings indicate that C16-R848 adjuvant pulsation to mRNA vaccine NP is a rational design strategy to increase the effectiveness of synthetic mRNA vaccines for cancer immunotherapy.
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Affiliation(s)
- Mohammad Ariful Islam
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Jamie Rice
- Vascular Biology Program, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Emma Reesor
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Harshal Zope
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Wei Tao
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Michael Lim
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Jianxun Ding
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Yunhan Chen
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Dike Aduluso
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Bruce R Zetter
- Vascular Biology Program, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
| | - Omid C Farokhzad
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
| | - Jinjun Shi
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
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