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Hasan MDN, Rahman MM, Husna AA, Arif M, Jasineviciute I, Kato D, Nakagawa T, Miura N. Upregulation and functional roles of miR-450b in canine oral melanoma. Noncoding RNA Res 2024; 9:376-387. [PMID: 38511062 PMCID: PMC10950611 DOI: 10.1016/j.ncrna.2024.01.017] [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] [Received: 11/22/2023] [Revised: 01/24/2024] [Accepted: 01/29/2024] [Indexed: 03/22/2024] Open
Abstract
Canine oral melanoma (COM) is a common and highly aggressive disease with the potential to model human melanomas. Dysregulated microRNAs represent an interesting line of research for COM because they are implicated in tumor progression. One example is miR-450b, which has been investigated for its molecular mechanisms and biological functions in multiple human cancers, but not human or canine melanoma. Here, we aimed to investigate miR-450b as a potential diagnostic biomarker of COM and its functional roles in metastatic and non-metastatic forms of the disease. We investigated the expression of miR-450b and its target mRNA genes in clinical (tumor tissue and plasma) samples and metastatic and primary-tumor cell lines. Knockdown and overexpression experiments were performed to determine the influence of miR-450b on cell proliferation, migration, colony formation, and apoptosis. miR-450b was significantly upregulated in COM and differentiated between metastatic and non-metastatic tumors, and its potential as a biomarker of metastatic and non-metastatic COM was further confirmed in ROC analysis. miR-450b knockdown promoted cell proliferation, migration, and clonogenicity and inhibited apoptosis, whereas its overexpression yielded the reverse pattern. miR-450b directly binds 3' UTR of PAX9 mRNA and modulates its function leading to BMP4 downregulation and MMP9 upregulation at the transcript level. Furthermore, we surmised that miR-450b activates the Wnt signaling pathway based on gene ontology and enrichment analyses. We concluded that miR-450b has the potential as a diagnostic biomarker and could be a target candidate for COM treatment.
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Affiliation(s)
- MD Nazmul Hasan
- Joint Graduate School of Veterinary Medicine, Kagoshima University, 1-21-24, Korimoto, Kagoshima, 890-0065, Japan
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24, Korimoto, Kagoshima, 890-0065, Japan
| | - Md. Mahfuzur Rahman
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Al Asmaul Husna
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24, Korimoto, Kagoshima, 890-0065, Japan
| | - Mohammad Arif
- Joint Graduate School of Veterinary Medicine, Kagoshima University, 1-21-24, Korimoto, Kagoshima, 890-0065, Japan
| | - Indre Jasineviciute
- Department of Anatomy and Physiology, Veterinary Faculty, Lithuanian University of Health Sciences, LT-47181, Kaunas, Lithuania
| | - Daiki Kato
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Takayuki Nakagawa
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Naoki Miura
- Joint Graduate School of Veterinary Medicine, Kagoshima University, 1-21-24, Korimoto, Kagoshima, 890-0065, Japan
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24, Korimoto, Kagoshima, 890-0065, Japan
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Jahan S, Rahman MM, Biswas SK, Hossain ATM, Saha B, Haque SMA. Breast Cancer in Younger and Older Women: A Comparison of Clinicopathological Traits. Mymensingh Med J 2024; 33:433-439. [PMID: 38557522] [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: 04/04/2024]
Abstract
Breast cancer stands as the prevailing invasive cancer globally, bearing high mortality rates among women. Existing evidence indicates diminished survival rates in younger patients. Consequently, this study endeavors to assess and contrast the pathological features of breast cancer in women under 40 years of age with their older counterparts. Conducted as a cross-sectional analysis, this study encompasses 560 patients diagnosed with breast cancer, seeking treatment at Mymensingh Medical College Hospital (MMCH), Community Based Medical College Bangladesh (CBMCB) and several private hospitals in Mymensingh. The gathered data incorporates information such as age, residential area, occupation, tumor histopathology, TNM classification, staging and status of hormone receptor. The patients' mean age (standard deviation) was 49.7±11.9 years, with 20.5% below 40, most were from rural areas and were housewives. Ductal carcinoma prevailed as the most common histopathologic type (87.67%). However, younger patients exhibited a higher prevalence of lobular and other rare carcinomas compared to their older counterparts (p=0.04). Additionally, the younger group demonstrated larger tumor sizes (p=0.01), lymphatic node involvement (p=0.04) and advanced staging (p=0.004). Notably, younger age showed more negativity for estrogen and/or progesterone receptors. The results suggested that women under 40 years old exhibit more aggressive tumor characteristics and a more severe form of breast cancer compared to their older counterparts.
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Affiliation(s)
- S Jahan
- Dr Shahanaz Jahan, Associate Professor, Department of Pathology, Community Based Medical College Bangladesh (CBMCB), Mymensingh, Bangladesh; E-mail:
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Nahar A, Hasan SK, Haq AI, Dowllah E, Al-Amin M, Sayeed SJ, Sikder MH, Rahman MM, Akhtaruzzaman M, Hoque MT. Dysfunction of Thyroid Hormones Following Acute Coronary Syndrome in a Tertiary Care Hospital in Dhaka City. Mymensingh Med J 2024; 33:486-491. [PMID: 38557530] [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: 04/04/2024]
Abstract
In cardiovascular homeostasis thyroid hormone plays an important role. We planned to study the changes in thyroid hormone profile in acute coronary syndrome patients admitted in the coronary care unit and compare them between two groups: unstable angina/non-ST elevated Myocardial infarction (UA/NSTEMI) and ST elevated Myocardial infarction (STEMI). This study was a hospital based descriptive cross sectional study which was conducted from 01 March 2018 to 01 February 2019 in Coronary Care Unit of Bangladesh Medical College Hospital and laboratory tests were done in Microbiology Department of Bangladesh Medical College, Dhaka, Bangladesh. Eighty three cases of acute coronary syndromes were taken for the study. Troponin-I was measured as cardiac marker, Electrocardiogram, Complete blood count, blood glucose level, Blood urea, serum creatinine, serum electrolytes, Fasting lipid profile, Thyroid profile, Echocardiography 2D were done. Most of the respondents were distributed in age group 46-60 years where 34(64.15%) male and 19(35.85%) female. Out of 83 Acute Coronary Syndrome (ACS) patients, 27(32.53%) hypertensive, 22(26.50%) diabetic and 16(19.27%) were Chronic kidney disease (CKD). Abnormal lipid profile was present in 30(43.47%) patients. Among total 52 male and 31 female 9(17.30%) male and 6(19.35%) female had abnormal thyroid function. We further elaborated abnormal thyroid function tests in STEMI group and UA/Non STEMI group of ACS patients. We found 10 patients in STEMI group and 5 patients in UA/Non STEMI group with abnormal thyroid function 29.41% and 10.20% respectively which was not statistically significant (p=0.025). This study depicts abnormality in thyroid hormone profile in 18.07% patients of ACS. Abnormal thyroid function increases risk of coronary artery disease. TSH level of ACS patients on hospital admission could be helpful to evaluate further prognosis of the disease.
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Affiliation(s)
- A Nahar
- Dr Azizun Nahar, Associate Professor of Microbiology, Bangladesh Medical College (BMC), Dhaka, Bangladesh; E-mail:
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Tuli JZ, Rahman MM, Yasmin M, Afrin R, Sarkar S. Comparative Study of Serum Zinc Level in Between Preeclamptic Patients and Normal Pregnancy in Bangladesh. Mymensingh Med J 2024; 33:540-543. [PMID: 38557538] [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: 04/04/2024]
Abstract
Globally preeclampsia is a major cause of maternal & perinatal morbidity & mortality. Zinc is an important trace element which is essential in pregnancy for fetal growth. Essentiality of zinc during pregnancy is evident. The cross sectional study was performed to estimate the comparison of serum zinc level in between preeclamptic patient and normal pregnancy. This study was conducted from July 2016 to June 2017 in the Department of Biochemistry, Mymensingh Medical College, Mymensingh, Bangladesh. Total 100 pregnant women were included as study population. Out of 100 subjects 50 were preeclamptic patients as case group and another 50 were normal pregnant women as control group. Serum zinc was determined by colorimetric method. The statistical analysis was done by SPSS windows package version 21.0. The mean±SD of case group was 59.30±5.22 and control group was 65.26±5.99mg/dl. Statistical difference was calculated by Student's unpaired 't' test. After analysis it showed that the mean±SD of serum zinc level was highly significantly (p<0.001) decreased in case group that in comparison to control group.
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Affiliation(s)
- J Z Tuli
- Dr Jesmin Zahan Tuli, Assistant Professor, Department of Biochemistry, Sheikh Hasina Medical College, Jamalpur, Bangladesh; E-mail:
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Shireen Akhter Jahan Q, Sultana Z, Ud-Daula MA, Md. Ashikuzzaman, Md. Shamim Reja, Rahman MM, Khaton A, Tang MAK, Rahman MS, Hossain Md. Faruquee, Lee SJ, Rahman AM. Optimization of green silver nanoparticles as nanofungicides for management of rice bakanae disease. Heliyon 2024; 10:e27579. [PMID: 38533066 PMCID: PMC10963222 DOI: 10.1016/j.heliyon.2024.e27579] [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] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 02/29/2024] [Accepted: 03/01/2024] [Indexed: 03/28/2024] Open
Abstract
Rice bakanae, a devastating seed-borne disease caused by Fusarium species requires a more attractive and eco-friendly management strategy. The optimization of plant-mediated silver nanoparticles (AgNPs) as nanofungicides by targeting Fusarium species may be a rational approach. In this study, Azadirachta indica leaf aqueous extract-based AgNPs (AiLAE-AgNPs) were synthesized through the optimization of three reaction parameters: A. indica leaf amount, plant extract-to-AgNO3 ratio (reactant ratio), and incubation time. The optimized green AgNPs were characterized using ultraviolet-visible light (UV-Vis) spectroscopy, field emission scanning electron microscopy (FESEM) with energy dispersive X-ray (EDX) spectroscopy, transmission electron microscopy (TEM), dynamic light scattering (DLS), and powder X-ray diffraction (XRD) techniques. The optimal conditions for producing spherical, unique, and diminutive-sized AgNPs ranging from 4 to 27 nm, with an average size of 15 nm, were 2 g AiLAE at a 1:19 ratio (extract-to-AgNO3) and incubated for 4 h. Fusarium isolates collected from infected soils and identified as F. fujikuroi (40) and F. proliferatum (58 and 65) by PCR were used for seed infestation. The AgNPs exhibited concentration-dependent mycelial growth inhibition with EC50 values ranging from 2.95 to 5.50 μg/mL. The AgNPs displayed exposure time-dependent seed disinfectant potential (complete CFU reduction in F. fujikuroi (40) and F. proliferatum (58) was observed at a concentration of 17.24 μg/mL). The optimized green AgNPs were non-toxic to germinating seeds, and completely cured bakanae under net-house conditions, suggesting their great nano-fungicidal potency for food security and sustainable agriculture.
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Affiliation(s)
| | - Ziniya Sultana
- Department of Applied Nutrition and Food Technology, Islamic University, Kushtia, 7003, Bangladesh
| | - Md. Asad Ud-Daula
- Department of Applied Nutrition and Food Technology, Islamic University, Kushtia, 7003, Bangladesh
| | - Md. Ashikuzzaman
- Department of Applied Nutrition and Food Technology, Islamic University, Kushtia, 7003, Bangladesh
| | - Md. Shamim Reja
- Department of Applied Nutrition and Food Technology, Islamic University, Kushtia, 7003, Bangladesh
| | - Md. Mahfuzur Rahman
- Department of Applied Nutrition and Food Technology, Islamic University, Kushtia, 7003, Bangladesh
| | - Amina Khaton
- Plant Pathology Division, Bangladesh Rice Research Institute, Gazipur, 1701, Bangladesh
| | - Md. Abul Kashem Tang
- Department of Applied Nutrition and Food Technology, Islamic University, Kushtia, 7003, Bangladesh
| | - M. Safiur Rahman
- Chemistry Division, Atomic Energy Centre (AECD), Bangladesh Atomic Energy Commission, Bangladesh
| | - Hossain Md. Faruquee
- Department of Biotechnology and Genetical Engineering, Islamic University, Kushtia, 7003, Bangladesh
| | - Seung Ju Lee
- Department of Food Science and Biotechnology, Dongguk University, Seoul, South Korea
| | - A.T.M. Mijanur Rahman
- Department of Applied Nutrition and Food Technology, Islamic University, Kushtia, 7003, Bangladesh
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Hasan MN, Rahman MM, Husna AA, Arif M, Iwanaga T, Tsukiyama-Kohara K, Jasineviciute I, Kato D, Nakagawa T, Miura N. Elevated expression of miR-301a and its functional roles in canine oral melanoma. Vet Comp Oncol 2024; 22:78-88. [PMID: 38148644 DOI: 10.1111/vco.12954] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 11/21/2023] [Accepted: 12/07/2023] [Indexed: 12/28/2023]
Abstract
miR-301a is one of numerous dysregulated microRNAs (miRNAs) in canine oral melanoma (COM), one of which is miR-301a (upregulated). Its biological role has been described in various human cancer types, including malignant melanoma, but not in COM. Accordingly, in this study, we investigated miR-301a expression in COM in greater detail to ascertain whether it could serve as a diagnostic biomarker, elucidate its functional roles in this cancer, and predict the possible pathways by which it exerts its effects. Relative expression of miR-301a was investigated in clinical oral tissue and plasma samples and COM cell (KMeC and LMeC) lines using qRT-PCR. Knockdown of miR-301a was also validated for KMeC and LMeC cells using qRT-PCR. We performed CCK-8 assays to assess cell proliferation, monolayer wound-healing, and transwell migration assays to assess cell migration, a colony-formation assay to assess clonogenicity, a TUNEL assay and flow cytometry to assess apoptosis-related effects, and gene enrichment analyses to predict possible related pathways. miR-301a was markedly upregulated in COM oral tissue and plasma clinically, suggesting its potential as a diagnostic biomarker for COM diagnosis. In vitro assays demonstrated that miR-301 significantly inhibited apoptosis in COM cells while promoting cell migration, proliferation, and clonogenicity. We also predicted that miR-301 exerts cancer-promoting effects through the Wnt signalling pathway for COM. Our findings suggest that miR-301a is a COM oncomiR that regulates several oncogenic phenotypes with the potential to be a diagnostic biomarker.
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Affiliation(s)
- Md Nazmul Hasan
- Joint Graduate School of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
| | - Md Mahfuzur Rahman
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Al Asmaul Husna
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
| | - Mohammad Arif
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
| | - Tomoko Iwanaga
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
| | - Kyoko Tsukiyama-Kohara
- Transboundary Animal Diseases Centre, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
| | - Indre Jasineviciute
- Department of Anatomy and Physiology, Veterinary Faculty, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Daiki Kato
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Takayuki Nakagawa
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Naoki Miura
- Joint Graduate School of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
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Islam MR, Khan MKR, Hossain MS, Rahman MM, Haque MM, Aliuzzaman M, Alam MK, Sarker MSI. Structural, thermodynamic, and magnetic properties of SrFe 12O 19 hexaferrite modified by co-substitution of Cu and Gd. RSC Adv 2024; 14:7314-7328. [PMID: 38433931 PMCID: PMC10906010 DOI: 10.1039/d3ra08878b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 02/16/2024] [Indexed: 03/05/2024] Open
Abstract
A hard magnetic system of SrFe12O19 nanomaterial was modified according to the composition of Sr0.95Gd0.05Fe12-xCuxO19 with x = 0.0, 0.30, and 0.60 using the sol-gel technique. The structures of the samples were evaluated using X-ray diffraction (XRD) along with Rietveld refinement, and an M-type hexaferrite with a hexagonal structure was confirmed with a trace amount of the α-Fe2O3 phase. In addition, transmission electron microscopy (TEM) analysis revealed polycrystalline nanoplates in all samples. Furthermore, the bond structures of the octahedral and tetrahedral sites along with the thermodynamic properties of these ferrites were extracted from the FTIR spectra at room temperature. The Debye temperature (θD) decreased from 755.9 K to 749.3 K due to the co-substitution of Gd3+ at Sr2+ and Cu2+ at Fe3+. The magnetic hysteresis (M-H) measurements revealed that the coercivity decreased from 5.3 kOe to 1.5 kOe along with the highest magnetization saturation (Ms) of 65.2 emu g-1 for the composition Sr0.95Gd0.05Fe11.7Cu0.3O19, which is suitable for industrial application. The effect of local crystalline anisotropy in magnetization was explored using the law of approach to saturation (LAS). Finally, thermo-magnetization was recorded in the range from 400 K to 5 K for cooling under zero field and in the presence of a 100 Oe field, and magnetic transitions were tracked due to the introduction of the foreign atoms of Gd and Cu into SrFe12O19.
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Affiliation(s)
- Md Roni Islam
- Department of Physics, Rajshahi University Rajshahi-6205 Bangladesh
| | - M K R Khan
- Department of Physics, Rajshahi University Rajshahi-6205 Bangladesh
| | - Md Sarowar Hossain
- Department of Physics, Faculty of Science and Technology (FST), American International University-Bangladesh (AIUB) Dhaka-1229 Bangladesh
| | - M M Rahman
- Department of Physics, Rajshahi University Rajshahi-6205 Bangladesh
| | - M Mahbubul Haque
- Materials Science Division, Atomic Energy Centre Dhaka-1000 Bangladesh
| | - M Aliuzzaman
- Nuclear Power and Energy Division, Bangladesh Atomic Energy Commission Dhaka-1207 Bangladesh
| | - M K Alam
- Department of Physics, Bangladesh University of Engineering & Technology Dhaka-1000 Bangladesh
| | - M S I Sarker
- Department of Physics, Rajshahi University Rajshahi-6205 Bangladesh
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Rahman MM, Kotturi H, Nikfarjam S, Bhargava K, Ahsan N, Khandaker M. Antimicrobial Activity of Polycaprolactone Nanofiber Coated with Lavender and Neem Oil Nanoemulsions against Airborne Bacteria. Membranes (Basel) 2024; 14:36. [PMID: 38392663 PMCID: PMC10890609 DOI: 10.3390/membranes14020036] [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] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 01/18/2024] [Accepted: 01/22/2024] [Indexed: 02/24/2024]
Abstract
The development of efficient, eco-friendly antimicrobial agents for air purification and disinfection addresses public health issues connected to preventing airborne pathogens. Herein, the antimicrobial activity of a nanoemulsion (control, 5%, 10%, and 15%) containing neem and lavender oils with polycaprolactone (PCL) was investigated against airborne bacteria, including Escherichia coli, Bacillus subtilis, and Staphylococcus aureus. Various parameters such as the physicochemical properties of the nanoemulsion, pH, droplet size, the polydispersity index (PDI), the minimum inhibitory concentration (MIC), the minimum bacterial concentration (MBC), and the color measurement of the emulsion have been evaluated and optimized. Our results showed that the antimicrobial activity of PCL combined with neem and lavender oil was found to be the highest MIC and MBC against all tested bacteria. The droplet sizes for lavender oil are 21.86-115.15 nm, the droplet sizes for neem oil are 23.92-119.15 nm, and their combination is 25.97-50.22 nm. The range of pH and viscosity of nanoemulsions of various concentrations was found to be 5.8 to 6.6 pH and 0.372 to 2.101 cP. This study highlights the potential of nanotechnology in harnessing the antimicrobial properties of natural essential oils, paving the way for innovative and sustainable solutions in the fight against bacterial contamination.
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Affiliation(s)
- Md Mahfuzur Rahman
- Department of Human Environmental Sciences, University of Central Oklahoma, Edmond, OK 73034, USA
| | - Hari Kotturi
- Department of Biology, University of Central Oklahoma, Edmond, OK 73034, USA
| | - Sadegh Nikfarjam
- Department of Biology, University of Central Oklahoma, Edmond, OK 73034, USA
| | - Kanika Bhargava
- Department of Human Environmental Sciences, University of Central Oklahoma, Edmond, OK 73034, USA
| | - Nagib Ahsan
- Department of Chemistry and Biochemistry, The University of Oklahoma, Norman, OK 73019, USA
- Mass Spectrometry, Proteomics and Metabolomics Core Facility, Stephenson Life Sciences Research Center, University of Oklahoma, Norman, OK 73019, USA
| | - Morshed Khandaker
- Nanobiology Laboratory, School of Engineering, University of Central Oklahoma, Edmond, OK 73034, USA
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Hasan MN, Rahman MM, Husna AA, Nozaki N, Yamato O, Miura N. YRNA and tRNA fragments can differentiate benign from malignant canine mammary gland tumors. Biochem Biophys Res Commun 2024; 691:149336. [PMID: 38039834 DOI: 10.1016/j.bbrc.2023.149336] [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: 09/25/2023] [Accepted: 11/23/2023] [Indexed: 12/03/2023]
Abstract
Mammary gland tumors (MGT) are the most common tumors in sexually intact female dogs. The functional regulation of miRNAs, a type of noncoding RNAs (ncRNAs), in canine MGT has been extensively investigated. However, the expression of other ncRNAs, such as YRNAs and transfer RNA-derived fragments (tRFs) in canine MGT is unknown. We investigated ncRNAs other than miRNAs from our small RNA project (PRJNA716131) in different canine MGT histologic subtypes. This study included benign tumors (benign mixed tumor, complex adenoma) and malignant tumors (carcinoma in benign tumor and carcinoma with metastasis) samples. Aberrantly expressed ncRNAs were examined by comparisons among MGT subtypes. The relative expression trends were validated in canine MGT tissues, plasma, extracellular vesicles, and MGT cell lines using quantitative reverse transcription PCR. Three aberrantly expressed ncRNAs were identified by comparisons among MGT subtypes. YRNA and tRNA-Gly-GCC distinguished benign mixed tumor from other MGT histologic subtypes, while tRNA-Val differentiated complex adenoma, carcinoma in benign tumors, and carcinoma with metastasis. The ROC curve of the three ncRNAs showed they might be potential biomarkers to discriminate malignant from benign MGT. YRNA and tRFs expression levels were decreased in metastatic compared with primary canine MGT cell lines. To the best of our knowledge, this is the first investigation of YRNA and tRFs in canine MGT. The three identified ncRNAs may be biomarkers for differentiating MGT histologic subtypes. Suggested Reviewers: Powered by Editorial Manager® and ProduXion Manager® from Aries Systems Corporatio.
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Affiliation(s)
- Md Nazmul Hasan
- Joint Graduate School of Veterinary Medicine, Kagoshima University, 1-21-24, Korimoto, Kagoshima, 890-0065, Japan; Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24, Korimoto, Kagoshima, 890-0065, Japan.
| | - Md Mahfuzur Rahman
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.
| | - Al Asmaul Husna
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24, Korimoto, Kagoshima, 890-0065, Japan.
| | - Nobuhiro Nozaki
- Joint Graduate School of Veterinary Medicine, Kagoshima University, 1-21-24, Korimoto, Kagoshima, 890-0065, Japan.
| | - Osamu Yamato
- Joint Graduate School of Veterinary Medicine, Kagoshima University, 1-21-24, Korimoto, Kagoshima, 890-0065, Japan; Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24, Korimoto, Kagoshima, 890-0065, Japan.
| | - Naoki Miura
- Joint Graduate School of Veterinary Medicine, Kagoshima University, 1-21-24, Korimoto, Kagoshima, 890-0065, Japan; Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24, Korimoto, Kagoshima, 890-0065, Japan.
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Islam MS, Khalil MM, Hossain MI, Datta RK, Podder S, Khan ST, Ahmed F, Ahmed F, Rahman MM, Kibria MG. Frequency of Post Endoscopic Retrograde Cholangiopancreatography Acute Pancreatitis in an Academic Hospital of Bangladesh. Mymensingh Med J 2024; 33:133-139. [PMID: 38163784] [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: 01/03/2024]
Abstract
Post-ERCP acute pancreatitis (PEP) is a common and serious complication with high morbidity and mortality rates. There is a paucity of data on the frequency of PEP in a resource constraint setting like Bangladesh. Hence we have conducted a prospective study to determine the frequency of PEP and the factors associated with its occurrence. This prospective, observational study was carried out in Gastroenterology Department of Dhaka Medical College & Hospital, Dhaka, Bangladesh from April 2018 to December 2018 on the consecutive patients who underwent ERCP. PEP and its severity were diagnosed according to consensus definition. Serum lipase was done in all patients before procedure and 24 hours after procedure or if patient develops abdominal pain after the procedure which became earlier. Total 168 patients were included (mean age 46.97±14.35 years; male 72(43.0%). The most common indication of ERCP was choledocholithiasis 97(58.0%) followed by malignant biliary obstruction 45(27.0%), recurrent pyogenic cholangitis 8(5.0%), chronic pancreatitis 4(2.3%), biliary ascariasis 4(2.3%) and others 10(6.0%). Overall post ERCP complication rate was 46(27.3%) including cholangitis 29(17.3%), pancreatitis 16(9.5%), bleeding 12(7.1%), aspiration pneumonia 4(2.4%) and death 3(1.8%). Regarding the severity of PEP, 50.0%, 43.7% and 6.3% patients developed mild, moderate and severe pancreatitis respectively. Number of cannulation attempts >5 times [22(48%) vs. 17(14%); p=0.001], cannulation attempts duration more than 10 minutes [25(55%) vs. 27(22%); p=0.001], unintentional passage of guide wire into the pancreatic duct [8(17%) vs. 18(15%); p=0.001], pancreatic duct contrast injection [12(26%) vs. 2(1.6%); p=0.001] and pre-cut sphincterotomy [16(35%) vs. 6(4.9%); p=0.001] were significantly different between the patients who developed PEP compared to those who did not. In multiple logistic regressions analysis, pancreatic duct contrast injection was significantly associated with PEP [OR 25.523 with 95% CI (4.049- 100.0%)]. Around ten percent patients had developed PEP. Regarding the severity half of them were mild, 44.0% patients had moderate and 6.0% patient had severe type of pancreatitis. Difficult cannulation, unintentional passage of guide wire into the pancreas, pancreatic duct contrast injection and pre-cut sphincterotomy were associated with PEP. Among them pancreatic duct contrast injection had independent significance in the causation of PEP.
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Affiliation(s)
- M S Islam
- Dr Mohammad Shohidul Islam, Assistant Registrar, Department of Medical Gastroenterology, Sheikh Russel National Gastroliver Institute & Hospital (SRNGI&H), Dhaka, Bangladesh; E-mail:
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Shapla SP, Rahman MM, Paul P, Begum M, Debnath MR, Jahan F, Ferdousi A, Saha T, Sultana H, Biswas R. Usefulness of Diagnostic Ultrasound for Detection of Common Shoulder Abnormalities Prior to MRI. Mymensingh Med J 2024; 33:16-22. [PMID: 38163768] [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: 01/03/2024]
Abstract
Shoulder pain is a common musculoskeletal pain in the general population and results in significant disability, quality of life impairment and financial burden to the health care system. This cross-sectional study was carried out among purposively selected 61 adult patients with shoulder pain and or limited range of motion in the Department of Radiology and Imaging, Mymensingh Medical College Hospital, Mymensingh, Bangladesh from September 2018 to August 2020 to determine the usefulness of USG in detection of common shoulder abnormalities, as an initial imaging modality using MRI as reference standard. The majority of the patients 25(40.98%) were in age group of 51-60 years with mean age of 52.98±10.85 years. In the dectection of rotator cuff pathology, the overall sensitivity, specificity and accuracy of USG for any complete tear were 100.0% each, for any partial tear were 79.71%, 96.57% and 91.80%, for any rotator cuff tear were 83.33%, 96.25% and 91.80%, and for any tendinosis were 90.48%, 99.37% and 96.31% respectively. The sensitivity, specificity and accuracy of USG were 88.23%, 92.59% & 90.16% for long head of biceps tendon sheath effusion, 100.0% each for long head of biceps tendon dislocation, 71.11%, 87.50% and 75.41% for glenohumeral joint effusion, and 58.06%, 96.67% and 77.05% for bursal effusion respectively. From this study, it is concluded that high resolution USG showed high sensitivity, specificity and accuracy compared to MRI in detecting common shoulder abnormalities, and could be considered as the first line imaging modality in the evaluation of shoulder pain.
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Affiliation(s)
- S P Shapla
- Dr Sanchita Paul Shapla, MD Resident, Department of Radiology and Imaging, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Majumder KR, Shrivastava A, Maitra D, Siddique MI, Rahman MM. Fish-tail Plasty: A Secure Technique to Enhance Cosmesis at the Lateral End of Mastectomy Scar and Prevent Dog Ear. Mymensingh Med J 2024; 33:160-167. [PMID: 38163788] [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: 01/03/2024]
Abstract
Mastectomy is very common surgical procedure for breast cancer. The closure of transverse elliptical mastectomy incisions has been represented with numerous modifications since 1915. The technical challenge is to avoid a fold of skin dogging laterally ("dog-ear"). This might lead to off future discomfort and poor cosmetic result. However, various surgical techniques are reported to tackle this lateral dog ear, there is no standardized technique. We therefore conduct a systematic review of the surgical techniques with the aim of comparing the merits and limitations of every technique. The comparative study among 72 patients was performed in Bangabandhu Sheikh Mujib Medical University, Anower Khan Modern Medical College & Hospital and Care Medical College & Hospital, Bangladesh from July 2017 to January 2020. Patients were divided randomly into two groups: Group I underwent fishtail technique group (36 patients), Group II underwent modified suturing technique group (36 patients). The follow up periods were 1 month and 3 months post-operatively for determination of the presence of dog ear and patient's satisfaction regarding cosmetic outcome and comfortability. Incidence of dog ear in fish-tail plasty group patients was less than that for Group II yet the difference is not significant less (p value 0.001). In consideration of patient satisfaction, doctor satisfaction and patient comfortability were significantly higher in Group I than Group II (p value 0.476 and 0.001 respectively). Fish-tail plasty was significantly better in patient satisfaction, comfortability and doctor satisfaction than modified suturing techniques and it might be recommended following mastectomy in obese patients for improving cosmesis and avoiding discomfort due to redundant skin.
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Affiliation(s)
- K R Majumder
- Dr Krisna Rani Majumder, Associate Professor of Surgical Oncology, Department of Surgery, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
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Hoque AF, Rahman MM, Lamia AS, Islam A, Klena JD, Satter SM, Epstein JH, Montgomery JM, Hossain ME, Shirin T, Jahid IK, Rahman MZ. In silico prediction of interaction between Nipah virus attachment glycoprotein and host cell receptors Ephrin-B2 and Ephrin-B3 in domestic and peridomestic mammals. Infect Genet Evol 2023; 116:105516. [PMID: 37924857 DOI: 10.1016/j.meegid.2023.105516] [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: 07/05/2023] [Revised: 09/11/2023] [Accepted: 10/18/2023] [Indexed: 11/06/2023]
Abstract
Nipah virus (NiV) is a lethal bat-borne zoonotic virus that causes mild to acute respiratory distress and neurological manifestations in humans with a high mortality rate. NiV transmission to humans occurs via consumption of bat-contaminated fruit and date palm sap (DPS), or through direct contact with infected individuals and livestock. Since NiV outbreaks were first reported in pigs from Malaysia and Singapore, non-neutralizing antibodies against NiV attachment Glycoprotein (G) have also been detected in a few domestic mammals. NiV infection is initiated after NiV G binds to the host cell receptors Ephrin-B2 and Ephrin-B3. In this study, we assessed the degree of NiV host tropism in domestic and peridomestic mammals commonly found in Bangladesh that may be crucial in the transmission of NiV by serving as intermediate hosts. We carried out a protein-protein docking analysis of NiV G complexes (n = 52) with Ephrin-B2 and B3 of 13 domestic and peridomestic species using bioinformatics tools. Protein models were generated by homology modelling and the structures were validated for model quality. The different protein-protein complexes in this study were stable, and their binding affinity (ΔG) scores ranged between -8.0 to -19.1 kcal/mol. NiV Bangladesh (NiV-B) strain displayed stronger binding to Ephrin receptors, especially with Ephrin-B3 than the NiV Malaysia (NiV-M) strain, correlating with the observed higher pathogenicity of NiV-B strains. From the docking result, we found that Ephrin receptors of domestic rat (R. norvegicus) had a higher binding affinity for NiV G, suggesting greater susceptibility to NiV infections compared to other study species. Investigations for NiV exposure to domestic/peridomestic animals will help us knowing more the possible role of rats and other animals as intermediate hosts of NiV and would improve future NiV outbreak control and prevention in humans and domestic animals.
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Affiliation(s)
- Ananya Ferdous Hoque
- Infectious Diseases Division (IDD), icddr,b, 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka 1212, Bangladesh
| | - Md Mahfuzur Rahman
- Infectious Diseases Division (IDD), icddr,b, 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka 1212, Bangladesh; Department of Microbiology, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Ayeasha Siddika Lamia
- Infectious Diseases Division (IDD), icddr,b, 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka 1212, Bangladesh
| | - Ariful Islam
- EcoHealth Alliance, 520 8th Ave Ste. 1200, New York, NY 10018, USA
| | - John D Klena
- Viral Special Pathogens Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Atlanta, GA 30333, USA
| | - Syed Moinuddin Satter
- Infectious Diseases Division (IDD), icddr,b, 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka 1212, Bangladesh
| | | | - Joel M Montgomery
- Viral Special Pathogens Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Atlanta, GA 30333, USA
| | - Mohammad Enayet Hossain
- Infectious Diseases Division (IDD), icddr,b, 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka 1212, Bangladesh
| | - Tahmina Shirin
- Institute of Epidemiology, Disease Control and Research (IEDCR), Mohakhali, Dhaka 1212, Bangladesh
| | - Iqbal Kabir Jahid
- Department of Microbiology, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Mohammed Ziaur Rahman
- Infectious Diseases Division (IDD), icddr,b, 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka 1212, Bangladesh.
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Atajanova T, Rahman MM, Konieczkowski DJ, Morris ZS. Radiation-associated secondary malignancies: a novel opportunity for applying immunotherapies. Cancer Immunol Immunother 2023; 72:3445-3452. [PMID: 37658906 DOI: 10.1007/s00262-023-03532-1] [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: 04/17/2023] [Accepted: 08/16/2023] [Indexed: 09/05/2023]
Abstract
Radiation is commonly used as a treatment intended to cure or palliate cancer patients. Despite remarkable advances in the precision of radiotherapy delivery, even the most advanced forms inevitably expose some healthy tissues surrounding the target site to radiation. On rare occasions, this results in the development of radiation-associated secondary malignancies (RASM). RASM are typically high-grade and carry a poorer prognosis than their non-radiated counterparts. RASM are characterized by a high mutation burden, increased T cell infiltration, and a microenvironment that bears unique inflammatory signatures of prior radiation, including increased expression of various cytokines (e.g., TGF-β, TNF-α, IL4, and IL10). Interestingly, these cytokines have been shown to up-regulate the expression of PD-1 and/or PD-L1-an immune checkpoint receptor/ligand pair that is commonly targeted by immune checkpoint blocking immunotherapies. Here, we review the current understanding of the tumor-immune interactions in RASM, highlight the distinct clinical and molecular characteristics of RASM that may render them immunologically "hot," and propose a rationale for the formal testing of immune checkpoint blockade as a treatment approach for patients with RASM.
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Affiliation(s)
- Tavus Atajanova
- Biochemistry and Biophysics Program, Amherst College, Amherst, MA, 01002, USA
- Department of Sociology, Amherst College, Amherst, MA, 01002, USA
- Department of Human Oncology, University of Wisconsin-Madison, Madison, WI, 53726, USA
| | - Md Mahfuzur Rahman
- Department of Human Oncology, University of Wisconsin-Madison, Madison, WI, 53726, USA
| | - David J Konieczkowski
- Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH, 43210, USA
| | - Zachary S Morris
- Department of Human Oncology, University of Wisconsin-Madison, Madison, WI, 53726, USA.
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Satter SM, Abdullah Z, Fariha F, Karim Y, Rahman MM, Balachandran N, Ghosh PK, Hossain ME, Mirza SA, Hall AJ, Gastañaduy PA, Rahman M, Vinjé J, Parashar UD. Epidemiology and Risk Factors of Norovirus Infections Among Diarrhea Patients Admitted to Tertiary Care Hospitals in Bangladesh. J Infect Dis 2023; 228:818-828. [PMID: 37503737 PMCID: PMC10547458 DOI: 10.1093/infdis/jiad274] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 05/21/2023] [Accepted: 07/27/2023] [Indexed: 07/29/2023] Open
Abstract
BACKGROUND Norovirus is a major cause of endemic acute gastroenteritis (AGE) worldwide. We described the epidemiology, risk factors, and genotypic distribution of noroviruses among hospitalized patients of all ages in Bangladesh. METHODS From March 2018 to October 2021, 1250 AGE case patients and controls (age, sex, season, and site matched) were enrolled at 10 hospitals. Demographic and clinical information was collected; real-time reverse-transcriptase polymerase chain reaction (RT-PCR) used to test stool specimens, and positive samples were genotyped. RESULTS Norovirus was detected in 9% of cases (111 of 1250) and 15% (182 of 1250) of controls. Eighty-two percent of norovirus-positive cases were in children <5 years old. Norovirus-positive AGE hospitalizations occurred year-round, with peaks in April and October. Risk factors for norovirus included age <5 years (adjusted odds ratio, 3.1 [95% confidence interval, 1.9-5.2]) and exposure to a patient with AGE in the 10 days before enrollment (3.8 [1.9-7.2]). GII.3[P16] and GII.4 Sydney[P16] were the predominant genotypes. CONCLUSIONS We highlight the burden of norovirus in hospital settings. Young age and recent exposure to a patient with AGE were risk factors for norovirus. A high prevalence of norovirus among controls might represent asymptomatic reinfections or prolonged shedding from a previous infection; carefully designed longitudinal studies are needed to improve our understanding of norovirus infections in Bangladesh.
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Affiliation(s)
- Syed M Satter
- International Center for Diarrheal Disease Research (ICDDR,B), Dhaka, Bangladesh
| | - Zarin Abdullah
- International Center for Diarrheal Disease Research (ICDDR,B), Dhaka, Bangladesh
| | - Farzana Fariha
- International Center for Diarrheal Disease Research (ICDDR,B), Dhaka, Bangladesh
| | - Yeasir Karim
- International Center for Diarrheal Disease Research (ICDDR,B), Dhaka, Bangladesh
| | - Md Mahfuzur Rahman
- International Center for Diarrheal Disease Research (ICDDR,B), Dhaka, Bangladesh
| | - Neha Balachandran
- Center for Disease Control and Prevention, Atlanta, Georgia, USA
- Cherokee Nation Assurance, Arlington, Virginia, USA
| | - Probir Kumar Ghosh
- International Center for Diarrheal Disease Research (ICDDR,B), Dhaka, Bangladesh
| | | | - Sara A Mirza
- Center for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Aron J Hall
- Center for Disease Control and Prevention, Atlanta, Georgia, USA
| | | | - Mustafizur Rahman
- International Center for Diarrheal Disease Research (ICDDR,B), Dhaka, Bangladesh
| | - Jan Vinjé
- Center for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Umesh D Parashar
- Center for Disease Control and Prevention, Atlanta, Georgia, USA
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Islam AM, Rahman KM, Rahman MA, Rahman MM, Paul GK, Jesmin H. Effect of Milk Intake and Calcium-Vitamin D Supplementation on Serum Vitamin D Status. Mymensingh Med J 2023; 32:1046-1051. [PMID: 37777900] [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
Vitamin D is important for health and disease. Milk is a good natural source of it, and calcium-vitamin D supplements are widely available over-the-counter and prescribed in clinical practice. But the effect of milk intake and calcium-vitamin D supplementation on serum vitamin D status is not known. This cross-sectional study was done to see the relationship between vitamin D status and milk intake or oral calcium-vitamin D supplementation using a structured questionnaire and carried out in a private consultation centre of Dhaka city, the capital of Bangladesh from July 2017 to March 2018. Serum 25-hydroxyvitamin D [25(OH)D] level was measured by radioimmunoassay. Out of 259 patients, 64.1% had vitamin D deficiency defined as serum 25(OH)D level <20ng/mL. Sixty one percent of those who had serum 25(OH)D level <20ng/mL did not take milk or milk products, while 53.0% of those having 25(OH)D level ≥20ng/mL did not take milk. Approximately 89.0% of those who had serum 25(OH)D level <20ng/mL did not take oral calcium-vitamin D, whereas 72.0% of those having 25(OH)D level ≥20ng/mL did not take oral calcium-vitamin D (p=0.001). In the multiple logistic regression analysis, there were significantly increased odds of vitamin D deficiency for females as compared to males [odds ratio (OR) 2.48, 95% confidence interval (CI) 1.34-4.56] and not taking oral vitamin D as compared to taking oral vitamin D (OR 3.56, 95% CI 1.74-7.28). Vitamin D deficiency is widely prevalent. Lack of milk intake and calcium-vitamin D supplementation are more commonly associated with serum vitamin D deficiency, and calcium-vitamin D supplementation is specially important in females.
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Affiliation(s)
- A M Islam
- Dr AKM Monwarul Islam, Associate Professor, Department of Cardiology, National Institute of Cardiovascular Diseases (NICVD), Dhaka, Bangladesh; E-mail:
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Rahman N, Rahman MA, Rahman MM, Ahmed B, Akter MR, Karim MR, Ahamed F. Role of Rehabilitation Exercise on Myofascial Pain Syndrome Causing Upper Back Pain. Mymensingh Med J 2023; 32:1096-1102. [PMID: 37777907] [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
Upper back pain is as painful or troublesome as the pain in the lower back or the neck. Myofascial pain syndrome which is most common cause of upper back pain is characterized by localized musculoskeletal pain and tenderness in association with trigger points. The aim of the study was to correlate the improvement of myofascial pain syndrome patients with proper and timely physical therapy. This quasi experimental study was conducted in the department of Physical Medicine and Rehabilitation, Bangabandhu Sheikh Mujib Medical University (BSMMU), Bangladesh, from 1st January 2008 to 31st August 2008 to see the role of rehabilitation exercise on myofascial pain syndrome causing upper back pain. Sixty (60) patients of myofascial pain syndrome causing upper back pain were randomly assigned for treatment; out of which 23(38.33%) were male and 37(61.66%) were female. The male and female ratio was 1:1.6. The patients selected for the trial were divided into two groups: Group A and Group B. In group A (n=28) the patients were treated with thermotherapy- Microwave diathermy, non-steroidal anti inflammatory drugs and activities of daily living instructions and in Group B (n=32) with same interventions in addition to rehabilitation exercises. Treatment duration was 6 weeks. The difference of treatment improvement was statistically significant (p<0.05) from 1st week up to 6th week. After complete course of treatment 67.86% patients in Group A and 78.13% patients in group B reported improvement. So rehabilitation exercises can be a valuable adjunct to other modalities of treatment of myofascial pain syndrome causing upper back pain.
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Affiliation(s)
- N Rahman
- Dr Nadia Rahman, Consultant, Department of Physical Medicine and Rehabilitation, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
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Chowdhury RA, Rahman MM, Islam MN, Roy S, Rahman MH, Hasan MH, Rahman MW, Alam I. Utility of Median-to-Ulnar Sensory Comparative Nerve Conduction Study to Increase Diagnostic Accuracy in Mild Carpal Tunnel Syndrome. Mymensingh Med J 2023; 32:1156-1162. [PMID: 37777915] [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
Electro-physiological diagnosis of mild Carpal Tunnel Syndrome (CTS) based on traditional median motor and sensory studies are often inconclusive. Therefore, we wanted to investigate the utility of Median-to-Ulnar Sensory Conduction studies in diagnosis of mild CTS. Data from Nerve conduction study (NCS) of 82 cases with symptoms suggestive of CTS from September 2017 to October 2020 attending electrophysiology department of Mount Adora Hospital, Sylhet, Bangladesh was selected for study. About 54(66.0%) out of 82 symptomatic patients were diagnosed as CTS by the conventional method, and 28(34.0%) patients required further investigation as their test report were found to be inconclusive. combining methods showed 70(85.37%) were found to be positive and 12(14.63%) were negative in comparison study. Thus, it can be concluded that those patients found to be negative in conventional methods; comparison method is an option for diagnostic confirmation.
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Affiliation(s)
- R A Chowdhury
- Dr Rahat Amin Chowdhury, Associate Professor of Neurology, Sylhet Women's Medical College, Sylhet, Bangladesh; E-mail:
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Bashar AK, Kabir MN, Ghosh R, Sajedin M, Rahman MM. Early Inflammatory Response of Dental Pulp in Response to Biodentin and Mineral Trioxide Aggregate as Pulp-capping Agents. Mymensingh Med J 2023; 32:1038-1045. [PMID: 37777899] [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
This study was carried out to observe immediate inflammatory response of Human Dental Pulp capped with Biodentin and Mineral Trioxide Aggregate (MTA). This prospective clinical study was carried out in the Department of Conservative Dentistry and Endodontics together with the Department of Orthodontia, Bangabandhu Sheikh Mujib Medical University (BSMMU), Bangladesh from 2016 to 2018. A total number of eighty (80) permanent premolars teeth planned to be extracted for orthodontic alignment of occlusion were used as study sample. Those teeth were divided into two groups; Group A and Group B, having 40 teeth in each (n=40). An occlusal exposure of approximately 1.5mm in diameter was made. Then in -group A, exposed pulp were capped with 2-mm-thick layer of sterile Biodentin (Septodont) and in-group B with ProRoot White MTA (Dentsply). After pulp capping with the experimental material in respective group, cavities in all teeth were restored with glass ionomer cement. After 24 hours the teeth were extracted, fixed in 10% buffered formalin solution, then decalcified by 10.0% nitric acid and embedded in paraffin. Now 2 to 3-micron-thick serial sections were made in the linguo-buccal plane and finally stained with hematoxylin-eosin. Now pulpal inflammation in respect of type, intensity and extension, were determined by using a predetermined evaluation criterion under an optical microscope at 40× magnifications. Statistical differences among the experimental groups were analyzed by Descriptive analysis (Cross Tabulation) (p<0.05). Histologically both the tested materials produced immediate pulpal tissue reaction. 'Biodentin' found to be most immediate pulpal tissue reactive (reactive in 100% cases), Whereas, MTA produced immediate tissue reaction only in 50.0% cases. Immediate pulpal inflammatory reaction in response to tested material found to be statistically significant different between 'Biodentin' and 'MTA' (p=0.001). According to present study Biodentin is found to be more immediate pulpal tissue reactive than MTA when used as a pulp capping material.
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Affiliation(s)
- A K Bashar
- Dr AKM Bashar, Professor, Department of Conservative Dentistry & Endodontics, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
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Rahman MM, Soma MA, Sultana N, Hossain MJ, Sufian MA, Rahman MO, Rashid MA. Exploring therapeutic potential of Woodfordia fruticosa (L.) Kurz leaf and bark focusing on antioxidant, antithrombotic, antimicrobial, anti-inflammatory, analgesic, and antidiarrheal properties. Health Sci Rep 2023; 6:e1654. [PMID: 37885464 PMCID: PMC10599101 DOI: 10.1002/hsr2.1654] [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] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 09/28/2023] [Accepted: 10/11/2023] [Indexed: 10/28/2023] Open
Abstract
Background and Aims The study aimed to evaluate the pharmacological properties of methanolic extracts of leaves and barks of Woodfordia fruticosa (L.) Kurz (family: Lythraceae) focusing on antioxidant, thrombolytic, anti-inflammatory, antibacterial, analgesic, and antidiarrheal effects. Methods 1,1-Diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assay, clot lysis, disc diffusion, and membrane stabilizing methods were employed to assess in vitro antioxidant, thrombolytic, antibacterial, and anti-inflammatory properties of the leaf and bark methanolic extracts (ME) of W. fruticosa and different organic solvents, that is, petroleum ether (PE), dichloromethane (DCM), chloroform (CL), and aqueous (AQ) fractions. In addition, in vivo central and peripheral analgesic and antidiarrheal activities of both crude extracts were evaluated at two doses (200 and 400 mg/kg of body weight [bw]). Results All the extracts and fractions showed promising antioxidant properties by scavenging DDPH free radicals with IC50 of 6.11-20.79 μg/mL. AQ fraction (41.24%) of leaves and ME (44.90%) of bark exerted notable in vitro thrombolytic activity. The CL fraction of leaves and AQ fraction of the bark showed 43.16% and 45.37% inhibition of RBC hemolysis, respectively, compared to the inhibition of RBC hemolysis by aspirin in a hypotonic-induced membrane stabilizing assay. Besides, both extracts were observed to provide significant (p < 0.001) central and peripheral analgesic responses at both doses of 200 and 400 mg/kg bw. Furthermore, both doses of bark extract (p < 0.001) and the 400 mg/kg bw of leaf extract (p < 0.05) were observed to possess statistically significant antidiarrheal activity. Additionally, in an in vivo acute toxicity investigation, both extracts had a median lethal dose (LD50) greater than 5000 mg/kg bw, indicating their safety level. Conclusion The current study proves the ethnomedicinal uses of W. fruticosa; however, further studies are required for phytochemical screening to isolate the responsible bioactive compounds and discover the lead molecules from the plant species.
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Affiliation(s)
- Md. Mahfuzur Rahman
- Medicinal and Aromatic Plant Research Division, BCSIR Chattogram LaboratoriesBangladesh Council of Scientific and Industrial ResearchChattogramBangladesh
| | | | - Nahid Sultana
- Department of BotanyJagannath UniversityDhakaBangladesh
| | - Md. Jamal Hossain
- Department of Pharmacy, School of Pharmaceutical SciencesState University of BangladeshDhakaBangladesh
| | - Md. Abu Sufian
- Marketing Strategy DepartmentIncepta Pharmaceuticals Ltd.DhakaBangladesh
| | - M. Oliur Rahman
- Department of Botany, Faculty of Biological SciencesUniversity of DhakaDhakaBangladesh
| | - Mohammad A. Rashid
- Department of Pharmaceutical Chemistry, Faculty of PharmacyUniversity of DhakaDhakaBangladesh
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Islam A, Haque N, Khatun A, Roy S, Rahman MM, Sathi FA, Hasan MS, Abedin S. Different RT-PCR Protocol used in SARS-Cov2 PCR Laboratory of Mymensingh Medical College, Bangladesh. Mymensingh Med J 2023; 32:911-921. [PMID: 37777880] [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
The novel corona virus (SARS CoV-2) was first detected on Wuhan, China. After that it spread worldwide and has caused many deaths till now. This virus is also known as novel corona virus because of being newly discovered. Scientifically it is named severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). It has positive-single stranded RNA and several proteins such as spike (S), envelope (E), membrane (M), nucleocapsid (N) and the other helper proteins. On the basis of phylogenic evidence, it is the new member of beta corona viruses and this group of viruses causes respiratory illness in human. This virus is detected in laboratory by using RT-PCR, by which different target gene such as E gene, S gene, N gene and RdRP (ORF1a-ORF1b) etc. are detected. This study was carried out at Mymensingh Medical College from April 2020 to December 2020. Around 65000 samples (nasopharyngeal swab) were tested during this period by three PCR protocols. By Sansure PCR kit N and ORF1a target genes were detected, Basphore's target genes were E and ORF and by Neoplex PCR kit N and RdRp genes were detected. Most of samples were tested by Sansure kit (62500), 2000 samples were screened by Bosphore kit and 500 samples by Neoplex. Among them, 6876(11.0%) samples were positive by Sansure, 120(6.0%) by Bosphore and 66(13.2%) by Neoplex. Among the positive samples, N gene 6188(90.0%) was mostly found by Sansure kit, whereas ORF was 120(100.0%) mostly found by Bosphore.
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Affiliation(s)
- A Islam
- Dr Arup Islam, Assistant Professor of Microbiology, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Chakraborty A, Liton MNH, Sarker MSI, Rahman MM, Khan MKR. Exploration of the structural, vibrational, electronic, mechanical and thermal properties of Ru 4Al 3B 2 and Ru 9Al 3B 8: a DFT study. RSC Adv 2023; 13:28912-28930. [PMID: 37790092 PMCID: PMC10544048 DOI: 10.1039/d3ra05334b] [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: 08/06/2023] [Accepted: 09/26/2023] [Indexed: 10/05/2023] Open
Abstract
The structural, dynamical, electro-optical, mechanical, and thermal characteristics of the newly synthesized intermetallic compounds Ru4Al3B2 and Ru9Al3B8 have been studied under ambient and elevated pressure through density functional theory (DFT). The obtained lattice parameters of the compounds are consistent with the experimental values. The metallic character of these compounds is established by the band structure and density of states (DOS). The electronic charge density distribution and bond analysis imply that Ru4Al3B2 and Ru9Al3B8 have mainly both ionic and covalent bonding. The non-negative phonon dispersion frequency of the compounds reaffirms their dynamical stability. Both compounds are tough as well as have high melting points, and hence, can be applied in harsh conditions. Mechanical properties are significantly improved under pressure. Thermal barrier coating (TBC) is a possible field of application for both compounds. The different thermal properties such as the Debye temperature (ΘD), Grüneisen parameter (γ), melting temperature (Tm), minimum thermal conductivity (Kmin) and lattice thermal conductivity (κph) of these compounds have been studied to figure out the suitable application areas in thermally demanding situations. The pressure and temperature dependent bulk modulus (B) and other thermodynamic properties have also been analyzed, which suggested that the present compounds are strong candidates for device applications at high temperature and pressure. Owing to their high optical absorptivity and reflectivity in the UV region, they are also candidates for UV-based applications. Furthermore, they also have applicability in the fields of electronics, aviation, energy storage, and supercapacitor devices for their superior electronic, thermal and mechanical properties.
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Affiliation(s)
- Arpon Chakraborty
- Department of Physics, University of Rajshahi Rajshahi-6205 Bangladesh
| | - M N H Liton
- Department of Physics, University of Rajshahi Rajshahi-6205 Bangladesh
- Department of Physics, Begum Rokeya University Rangpur-5400 Bangladesh
| | - M S I Sarker
- Department of Physics, University of Rajshahi Rajshahi-6205 Bangladesh
| | - M M Rahman
- Department of Physics, University of Rajshahi Rajshahi-6205 Bangladesh
| | - M K R Khan
- Department of Physics, University of Rajshahi Rajshahi-6205 Bangladesh
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Farzin A, Rahman MM, Mollika FA, Haque MM, Das P. Bacteriological Profile of Hospital Acquired Infection and Their Antimicrobial Susceptibility Patterns in a Tertiary Care Hospital. Mymensingh Med J 2023; 32:787-793. [PMID: 37391975] [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: 07/02/2023]
Abstract
A hospital-acquired infection (HAI) is acquired in a hospital or other health care facilities. This is an extra burden in every unit of hospital as it increases the morbidity, mortality, cost of treatment and also duration of the hospital stays for the patients. This study aimed to find out the causative bacterial agents of HAI from different clinical samples and their antimicrobial susceptibility patterns. This was a cross-sectional descriptive study conducted in the Department of Microbiology and Virology, Sylhet MAG Osmani Medical College, in collaboration with in-patient departments of Sylhet MAG Osmani Medical College Hospital from January 2019 to December 2019. A total of 123 patients of different ages, sex were enrolled in this study. Samples were collected from postoperative wounds, post catheterized urinary tract infections, diabetic wounds and intravenous cannula from Surgery ward, Medicine ward and Obstetrics & Gynecology ward. Standard laboratory procedures were applied to isolate and identify the bacteria. The identified organisms were then tested for anti biogram. Among 123 patients 46 (37.4%) were affected by hospital acquired infections. Higher prevalence (n=28, 60.87%) of HAI was found in Surgery ward and the lower prevalence (n=9, 19.56%) was found in Medicine ward and Obstetrics & Gynecology ward. The most common type of infection was surgical wound infection (20, 43.48%). Out of all the HAIs irrespective of source and site, highest number were done by Staphylococcus aureus (15, 30.61%) followed by Pseudomonas aeruginosa (08, 16.33%), Escherichia coli (07, 14.29%), Serratia spp. (05, 6.12%), Aeromonas spp. (05, 6.12%), Acinetobacter spp. (02, 4.08%), Proteus spp. (02, 4.08%), Citrobacter spp. (02, 4.08%), Klebsiella spp. (02, 4.08%), CoNS (02, 4.08%), Enterobacter spp. (01, 2.04%) and Morganella morganii (01, 2.04%). The antimicrobial susceptibility data suggested that Gram positive bacteria are more susceptible to doxycycline, vancomycin and linezolid; while Gram negative bacteria were more susceptible to imipenem, levofloxacin and meropenem.
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Affiliation(s)
- A Farzin
- Dr Anika Farzin, Associate Professor, Department of Microbiology, Eastern Medical College, Cumilla, Bangladesh; E-mail:
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24
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Chowdhury MM, Warid MM, Mohammed S, Sobhan SA, Haque MN, Quiyum MA, Rahman Z, Mahmud R, Tanjim SM, Rahman MM. Biliary Embryonal Rhabdomyosarcoma: A Case Report. Mymensingh Med J 2023; 32:880-883. [PMID: 37391989] [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: 07/02/2023]
Abstract
A 10 years old boy who was initially diagnosed as choledochal cyst underwent laparotomy. There was presence of necrotic and soft tissue growth within common bile duct (CBD). After extensive toileting of bile duct, a T-tube was placed. His histopathology followed by immunohistochemistry revealed Embryonal Rhabdomyosarcoma. Later the patient received VAC regime chemotherapy. On follow-up imaging, there was no tumour mass in CBD. So, T-tube removed and now the patient is doing well.
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Affiliation(s)
- M M Chowdhury
- Professor Dr Md Mohsen Chowdhury, Professor & Chairman, Hepatobiliary, Pancreatic and Liver Transplant Surgery Department, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
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25
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Tuli JZ, Rahman MM, Biswas PS, Sarkar S, Nahar K, Momo FR. Comparison of Serum Phosphorus Level among Women with Preeclampsia and Normal Pregnancy. Mymensingh Med J 2023; 32:769-772. [PMID: 37391972] [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: 07/02/2023]
Abstract
Pregnancy is a physiological state. During pregnancy increased physiological changes may lead to many biochemical and anatomical alterations. The biochemical changes that seen in blood of the pregnant mother are exaggerated in various complications of pregnancy like preeclampsia. Preeclampsia is a dangerous complication that may leads to maternal and neonatal mortality. Globally it affects 3.0-5.0% of pregnant women. The study was done to analyze the changes in serum phosphorus level in pre-eclamsia compared with normal pregnancy. The study was cross sectional and was performed from July 2016 to June 2017 in the department of Biochemistry, Mymensingh Medical College, Mymensingh, Bangladesh. Total 100 subjects were included in this study. Among them 50 preeclamptic patients were taken as case and another 50 normal pregnant women were taken as control. Statistical difference was calculated by Student's unpaired 't' test. Biochemical values were expressed as mean±SD. The mean±SD of serum phosphorus levels in case and control group were 2.81±0.79 and 3.40±0.87mg/dl respectively. The difference in mean±SD of serum phosphorus were highly significant (p<0.001) when compared between case and control.
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Affiliation(s)
- J Z Tuli
- Dr Jesmin Zahan Tuli, Assistant Professor, Department of Biochemistry, Sheikh Hasina Medical College, Jamalpur, Bangladesh; E-mail:
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26
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Alam QS, Alam MT, Sutrodhar PK, Islam MS, Hossain MM, Salam SI, Saha MK, Rahman MM, Hossain MZ, Roy MK. Outcomes of Varus Derotation Femoral Osteotomy By Angle Blade Plate in Legg-Calve-Perthes Disease for Patient Above Eight Years of Age in The Lateral Pillar B or B/C Group. Mymensingh Med J 2023; 32:677-680. [PMID: 37391959] [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: 07/02/2023]
Abstract
Legg-Calve-Perthes disease (LCPD) that starts after 8 years (late onset) usually follow more aggressive course and the long-term outcome is also poor. Treatment method of LCPD that will produce best results is controversial particularly if the patients are with late-onset presentation. This prospective study was conducted from January 2015 to January 2019 at Dhaka Medical College Hospital and Health N Hope Hospital, Dhaka, Bangladesh. We evaluated the radiographic outcomes for patients who had varus derotation femoral osteotomy (VDRO). We followed up 16 patients who had femoral varus osteotomy. All patients were above 8 years of age at clinical onset. The involvement of femoral epiphysis was in either in B or B/C in lateral pillar classification. All patients had MRI done to confirm radiological diagnosis and classification. The mean age was 9.5 years (range, 8 to 12 years). Final outcome was evaluated by using the Stulberg classification which was radiological. Important exclusion criteria were patient with bilateral involvement and requirement of femoral varus >30 degree. We had 81.25% of our patient with satisfactory outcomes. Among them there were Stulberg grade I, 0 cases; Stulberg grade II, 13 cases (81.25%); Stulberg III, 3 cases (18.75%), Stulberg IV and V both 0 case each. The surgical outcomes for varus derotation femoral osteotomy in late onset LCPD patients over 8 years old were showing the good results than other modalities of non surgical and surgical methods.
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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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27
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Hasan MM, Hossain MS, Islam MD, Rahman MM, Ratna AS, Mukhopadhyay S. Nontoxic Cross-Linked Graphitic Carbon Nitride-Alginate-Based Biodegradable Transparent Films for UV and High-Energy Blue Light Shielding. ACS Appl Mater Interfaces 2023. [PMID: 37347588 DOI: 10.1021/acsami.3c05659] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Abstract
Flexible, transparent, and biodegradable films that can shield dangerous UV and high-energy blue light (HEBL) are high in demand to satisfy the ever-increasing expectations for environmental sustainability. To achieve this goal, biopolymer alginate is an excellent choice that has an outstanding film-forming ability. However, alginate has the limitation of poor UV and HEBL blocking ability. Thus, in this study, UV and HEBL blocker graphitic carbon nitride (g-C3N4) was incorporated in alginate films to enhance the compatibility, applicability, and durability. The ATR-FTIR, TGA, DTG, and FE-SEM results indicated that the composite film formation was due to hydrogen bonding, and the composite films revealed synergistic properties of alginate and g-C3N4. Though the incorporation of g-C3N4 in films enhanced the mechanical and thermal stabilities of the films, the films were still flexible. The UV-visible transmittance characterization confirmed that the prepared films could block both UV and HEBL radiation while maintaining transparency in visible regions. In experiments involving only 2 wt % g-C3N4, nearly 90% of UV (200-400 nm) and 95% of HEBL (400-450 nm) irradiation were blocked. Additionally, the inclusion of g-C3N4 also facilitated the biodegradation process of composite films. Moreover, after 6 months, the composite films exhibited excellent UV and HEBL shielding with excellent mechanical durability.
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Affiliation(s)
- M Mehedi Hasan
- Applied Chemistry and Chemical Engineering, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| | - Md Sajib Hossain
- National Institute of Textile Engineering and Research, University of Dhaka, Dhaka 1000, Bangladesh
| | - Md Didarul Islam
- National Institute of Textile Engineering and Research, University of Dhaka, Dhaka 1000, Bangladesh
| | - Md Mahfuzur Rahman
- Industrial and Production Engineering, Jashore University of Science and Technology (JUST), Jashore 7408, Bangladesh
| | - Aditi Sarker Ratna
- National Institute of Textile Engineering and Research, University of Dhaka, Dhaka 1000, Bangladesh
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Goswami U, Rahman MM, Teng J, Hibbs RE. Structural interplay of anesthetics and paralytics on muscle nicotinic receptors. Nat Commun 2023; 14:3169. [PMID: 37264005 DOI: 10.1038/s41467-023-38827-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 05/17/2023] [Indexed: 06/03/2023] Open
Abstract
General anesthetics and neuromuscular blockers are used together during surgery to stabilize patients in an unconscious state. Anesthetics act mainly by potentiating inhibitory ion channels and inhibiting excitatory ion channels, with the net effect of dampening nervous system excitability. Neuromuscular blockers act by antagonizing nicotinic acetylcholine receptors at the motor endplate; these excitatory ligand-gated ion channels are also inhibited by general anesthetics. The mechanisms by which anesthetics and neuromuscular blockers inhibit nicotinic receptors are poorly understood but underlie safe and effective surgeries. Here we took a direct structural approach to define how a commonly used anesthetic and two neuromuscular blockers act on a muscle-type nicotinic receptor. We discover that the intravenous anesthetic etomidate binds at an intrasubunit site in the transmembrane domain and stabilizes a non-conducting, desensitized-like state of the channel. The depolarizing neuromuscular blocker succinylcholine also stabilizes a desensitized channel but does so through binding to the classical neurotransmitter site. Rocuronium binds in this same neurotransmitter site but locks the receptor in a resting, non-conducting state. Together, this study reveals a structural mechanism for how general anesthetics work on excitatory nicotinic receptors and further rationalizes clinical observations in how general anesthetics and neuromuscular blockers interact.
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Affiliation(s)
- Umang Goswami
- Department of Neuroscience and O'Donnell Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Md Mahfuzur Rahman
- Department of Neuroscience and O'Donnell Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
- Thermo Fisher Scientific, Rockford, IL, 61101, USA
| | - Jinfeng Teng
- Department of Neurobiology, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Ryan E Hibbs
- Department of Neuroscience and O'Donnell Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA.
- Department of Neurobiology, University of California, San Diego, La Jolla, CA, 92093, USA.
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29
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Rahman MM, Tasnim J. Exploring the factors behind the shift in unwanted childbearing rate in Bangladesh between 2007 and 2017/2018: a cross-sectional study. BMJ Open 2023; 13:e069265. [PMID: 37258067 DOI: 10.1136/bmjopen-2022-069265] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
Abstract
OBJECTIVES This study aimed at exploring the factors associated with the reduction in the proportion of women reporting unwanted births in Bangladesh between 2007 and 2017/2018. DESIGN AND SETTING A cross-sectional analysis of the data collected by the 2007 and 2017/2018 Bangladesh Demographic and Health Surveys by using a two-stage stratified sampling covering the entire population in Bangladesh. PARTICIPANTS Our analysis included 4810 (2007) and 7403 (2017/2018) weighted ever-married women aged 15-49 years reporting at least one birth in the 5 years preceding each of the surveys. RESULTS The proportion of women reporting unwanted births declined by 26.2% between 2007 and 2017/2018. Overall changes in women's behaviour and their proportions with distinct characteristics explained 66.2% (0.051 points decrease, 95% CI -0.071 to -0.031, p<0.001) and 45.5% (0.035 points decrease, 95% CI -0.051 to -0.019, p<0.001) of the overall reduction in the proportion reporting unwanted births, respectively. Behavioural changes among those being visited by family planning (FP) workers (0.004 points decrease, 95% CI -0.008 to -0.000, p=0.047), having complete secondary education or higher (0.009 points decrease, 95% CI -0.016 to -0.003, p=0.002), and earning in kind (0.002 points decrease, 95% CI -0.005 to -0.000, p=0.035) were associated with a reduction in unwanted childbearing. Increases in the proportions of women married at age 18 or older (0.008 points decrease, 95% CI -0.010 to -0.005, p<0.001), and having some secondary education (0.013 points decrease, 95% CI -0.019 to -0.008, p<0.001) were negatively associated with unwanted childbearing. Conversely, an increase in the proportion expressing preference for a balanced sex composition of the family was positively associated with unwanted childbearing (0.013 points increase, 95% CI 0.008 to 0.017, p<0.001). CONCLUSIONS Women's behavioural changes driven by the FP programmes and other external factors, and changes in their characteristics, could reduce the incidence of unwanted childbearing in Bangladesh, and thereby contribute to improvements in maternal health.
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Affiliation(s)
- Md Mahfuzur Rahman
- Department of Population Science and Human Resource Development, University of Rajshahi, Rajshahi, Bangladesh
| | - Jannatul Tasnim
- Department of Population Science and Human Resource Development, University of Rajshahi, Rajshahi, Bangladesh
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30
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Zhang Y, Rahman MM, Clark PA, Sriramaneni RN, Havighurst T, Kerr CP, Zhu M, Jones J, Wang X, Kim K, Gong S, Morris ZS. In Situ Vaccination Following Intratumoral Injection of IL2 and Poly-l-lysine/Iron Oxide/CpG Nanoparticles to a Radiated Tumor Site. ACS Nano 2023. [PMID: 37216491 DOI: 10.1021/acsnano.3c00418] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The in situ vaccine effect of radiation therapy (RT) has been shown to be limited in both preclinical and clinical settings, possibly due to the inadequacy of RT alone to stimulate in situ vaccination in immunologically "cold" tumor microenvironments (TMEs) and the mixed effects of RT in promoting tumor infiltration of both effector and suppressor immune cells. To address these limitations, we combined intratumoral injection of the radiated site with IL2 and a multifunctional nanoparticle (PIC). The local injection of these agents produced a cooperative effect that favorably immunomodulated the irradiated TME, enhancing the activation of tumor-infiltrating T cells and improving systemic anti-tumor T cell immunity. In syngeneic murine tumor models, the PIC+IL2+RT combination significantly improved the tumor response, surpassing the single or dual combinations of these treatments. Furthermore, this treatment led to the activation of tumor-specific immune memory and improved abscopal effects. Our findings suggest that this strategy can be used to augment the in situ vaccine effect of RT in clinical settings.
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Affiliation(s)
- Ying Zhang
- Department of Biomedical Engineering and Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States
| | - Md Mahfuzur Rahman
- Department of Human Oncology, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States
| | - Paul A Clark
- Department of Human Oncology, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States
| | - Raghava N Sriramaneni
- Department of Human Oncology, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States
| | - Thomas Havighurst
- Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, Wisconsin 53792, United States
| | - Caroline P Kerr
- Department of Human Oncology, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States
- Department of Radiology, University of Wisconsin-Madison, Madison, Wisconsin 53792, United States
| | - Min Zhu
- Department of Biomedical Engineering and Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Jamie Jones
- Department of Biomedical Engineering and Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States
| | - Xiuxiu Wang
- Department of Biomedical Engineering and Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States
| | - KyungMann Kim
- Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, Wisconsin 53792, United States
| | - Shaoqin Gong
- Department of Biomedical Engineering and Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Zachary S Morris
- Department of Human Oncology, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States
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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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32
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Azad AK, Banik D, Hoque AF, Kader MA, Ray L, Hannan MA, Rahman MM, Shah MI, Siddique SU, Haque MM, Mariom ML, Jahan AS, Hossain MS, Masud M. Predicting Difficult Intubation by using Modified Mallampati (MMT) with or without Thyromental Height Test (TMHT). Mymensingh Med J 2023; 32:534-541. [PMID: 37002768] [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
Failed Tracheal Intubation with Subsequent inability to maintain an open airway and adequate oxygenation is the most frequent cause of brain damage or death during anesthesia. Recognizing before anesthesia the potential for difficult intubation allows time for optimal preparation. Proper Selection of equipment and techniques is needed to avoid unwanted situation. To find out difficulties associated with endotracheal intubation using Modified Mallampati Test (MMT) combined with Thyromental Height Test (TMHT) and MMT without TMHT. This prospective observational study was conducted at the Department of Anesthesia in Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh from April 2018 to September 2018. Two hundred two patients with different surgical procedures under general anaesthesia in different operation theaters of BSMMU, Dhaka were selected as study population. After taking written consents from each patient or his/her attendant elaborate history of illness, meticulous clinical examinations were performed and relevant laboratory investigations were done. All information was recorded in a preformed data sheet and statistical analysis was done by SPSS-22.0. Mean age ±SD of the study subjects was 42.49±14.29 years in MMT with TMHT group and 43.40±15.39 years in MMT without TMHT group. Females were enrolled more than males in both the groups. BMI was 28.75±3.59kg/m² in MMT with TMHT group and 29.44±8.64kg/m² in MMT without TMHT group. There were no significant differences in age, gender and BMI between the groups. Sensitivity, specificity, PPV, NPV and accuracy were 100.0%, 96.0%, 96.2%, 100.0% and 98.0% respectively of MMT with TMHT in predicting intubation difficulty. Sensitivity, specificity, PPV, NPV and accuracy were 100.0%, 96.0%, 96.2%, 100.0% and 98.0% respectively of MMT only in predicting intubation difficulty. MMT combined with TMHT is a better predictor of intubation difficulty than MMT alone.
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Affiliation(s)
- A K Azad
- Dr Mohammad Abul Kalam Azad, Medical Officer, Department of Anesthesia, Analgesia & Intensive Care Medicine (AA&ICM), Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
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33
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Siddiqui M, Globig A, Hoffmann B, Rahman MM, Islam MR, Chowdhury EH. Development of cell culture based peste des petits ruminants (PPR) virus vaccine candidate from Bangladeshi isolates. J Virol Methods 2023; 314:114690. [PMID: 36775141 DOI: 10.1016/j.jviromet.2023.114690] [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: 10/26/2022] [Revised: 02/06/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023]
Abstract
This study was conducted to develop a cell culture based PPR virus vaccine candidate using recent Bangladeshi strain of peste des petits ruminant's (PPR) virus. PPR virus was isolated from field outbreaks, confirmed by RT-PCR and used as viral inoculum for serial passaging in Vero cells for adaptation and attenuation. 60th serial passage had completed and RT-PCR and real time RT-PCR were done in every 5 passages for confirmation of PPR virus in tissue culture fluid (TCF). To assess the adaptation and attenuation cytopathology, virus titration, sequencing of both F and N genes and live animal experimentation were done. Different cellular alterations produced by PPR virus in infected Vero cells including syncytia formation, development of both intranuclear and intra cytoplasmic inclusion bodies and finally cell degradation are the indications of adaptation. The virus titre was found 2.5, 3.31, 3.55, 4.44, 4.71 and 6.5 Log10 TCID50/ml at 10th, 20th, 30th, 40th, 50th and 60th passages level respectively. In F gene sequence analysis it has been observed that few nucleotide (nt) and mino acid (aa) has been substituted as the effects of serial passaging of PPR virus in Vero cells. TCF at 60th passage level was found effective to produced protective antibody (Ab) titre in live animal experimentation. It is concluded that serially passaged and Vero cells adapted PPR virus TCF could be used as a vaccine candidate for further use to develop a potent & effective vaccine against PPR diseases.
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Affiliation(s)
- Msi Siddiqui
- Department of Anatomy & Histology, Faculty of Veterinary, Animal & Biomedical Sciences, Sylhet Agricultural University, Sylhet 3100, Bangladesh.
| | - Anja Globig
- Friedrich Loffler Institute, Federal Research Institute for Animal Health, Südufer 10, D-17493 Greifswald-Insel Riems, Germany.
| | - Bernd Hoffmann
- Friedrich Loffler Institute, Federal Research Institute for Animal Health, Südufer 10, D-17493 Greifswald-Insel Riems, Germany.
| | - M M Rahman
- Office of the Director General, Bangladesh Islamic Foundation, Ministry of Religious Affairs, Govt. of the Peoples Republic of Bangladesh, Dhaka, Bangladesh.
| | - M R Islam
- Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
| | - E H Chowdhury
- Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
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Younes H, Rahman MM, Hong H, AlNahyan M, Ravaux F. Capacitive deionization performance of asymmetric nanoengineered CoFe 2O 4 carbon nanomaterials composite. Environ Sci Pollut Res Int 2023; 30:32539-32549. [PMID: 36469268 DOI: 10.1007/s11356-022-24516-1] [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: 07/04/2022] [Accepted: 11/28/2022] [Indexed: 06/17/2023]
Abstract
Capacitive deionization (CDI) is a relatively new technique that uses electric double layer (EDL) effects, high-affinity chemical groups, redox-active materials, and membrane capacitive electrosorption principle for the desalination. In this paper, hydrothermal synthesis of cobalt ferric oxide (CFO) metal oxide nanoparticles (NPs) coupled with the vacuum filtration method, or the freeze-drying method is used to fabricate high-performance nanocomposites: CFO-graphene, CFO-CNTs, and CFO-3DrGO. Two times of hydrothermal reaction methods were conducted to fabricate the CFO-3DrGO nanoengineered as a pseudocapacitive/EDL electrode. The results have demonstrated that the SAC of CFO-3DrGO/CFO (64.5 mg g-1) is greater than that of the CFO-graphene/CFO (55.16 mg g-1) and CFO-CNTs/CFO (21.5 mg g-1) due to the better surface area of the CFO-3DrGO nanocomposite (330 m2 g-1). The higher surface area of the CFO-3DrGO is due to the porous and interconnected 3D structure of the 3DrGO, and it provides a larger surface area to form EDL capacitance. In addition, the added porous 3DrGO entangled with the spinel crystals (CoFe2O4) in the composite allowed for a quick ion diffusion across the interconnected open macroporous structures.
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Affiliation(s)
- Hammad Younes
- Department of Electrical Engineering, South Dakota Mines, Rapid City, SD, 57701, USA.
| | - Md Mahfuzur Rahman
- Department of Industrial and Production Engineering, Jashore University of Science and Technology (JUST), Jashore, 7408, Bangladesh
| | - Haiping Hong
- Department of Electrical Engineering, South Dakota Mines, Rapid City, SD, 57701, USA
| | - Maryam AlNahyan
- Department of Mechanical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Florent Ravaux
- Department of Mechanical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
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Puthiaparampil T, Rahman MM, Sabrina BL, Nariman S, Shazrina AR. Rejuvenating multiple true-false: proposing fairer scoring methods. Med J Malaysia 2023; 78:213-217. [PMID: 36988533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
INTRODUCTION The COVID-19 pandemic has reached a phase where many have been infected at least once. Healthcare workers were not spared from being infected. This study aimed to determine the period prevalence of COVID-19 among the paediatric healthcare workers in Negeri Sembilan as the country transitioned into an endemic phase of the pandemic. Additionally, we investigate potential sociodemographic and occupational characteristics associated with SARS-CoV-2 infection among healthcare workers. MATERIALS AND METHODS A cross-sectional study was conducted among the healthcare workers in the paediatric department at three public specialist hospitals in Negeri Sembilan between 15 and 21 April 2022. Data were collected through a self-administered questionnaire. RESULTS Out of the 504 eligible healthcare workers, 493 participated in this study (response rate 97.8%). The overall prevalence of COVID-19 (11 March 2020-15 April 2022) among healthcare workers was 50.9%. The majority (80.1%) were infected during the Omicron wave two months before the survey. Household contacts accounted for 35.9% of infection sources. The proportion of non-doctors in the COVID-19-infected group was significantly higher compared to the non-infected group (74.1% vs 64.0%, p=0.016). The COVID-19-infected group had a higher proportion of schoolgoing children (44.6% vs 30.6%, p=0.001) and children who attended pre-school/sent to the babysitter (49.0% vs 24.4%, p<0.001). There were no significant differences between infection rates among the healthcare workers working in the tertiary hospital and the district hospitals. There were also no significant differences in the proportion of COVID-19- infected doctors and nurses when analysed by seniority. CONCLUSION Our study provided an estimate on the prevalence of COVID-19 among paediatric healthcare workers in Negeri Sembilan and the factors associated with infection, which captures the extent and magnitude of this pandemic on the state's paediatric department. Most infections resulted from household contact, with a higher proportion of infected healthcare workers having young children.
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Affiliation(s)
- T Puthiaparampil
- Universiti Malaysia Sarawak, Faculty of Medicine and Health Sciences, Sarawak, Malaysia.
| | - M M Rahman
- Universiti Malaysia Sarawak, Faculty of Medicine and Health Sciences, Sarawak, Malaysia
| | - B L Sabrina
- Universiti Malaysia Sarawak, Faculty of Medicine and Health Sciences, Sarawak, Malaysia
| | - S Nariman
- Universiti Malaysia Sarawak, Faculty of Medicine and Health Sciences, Sarawak, Malaysia
| | - A R Shazrina
- Universiti Malaysia Sarawak, Faculty of Medicine and Health Sciences, Sarawak, Malaysia
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Ali MR, Bacchu MS, Das S, Akter S, Rahman MM, Saad Aly MA, Khan MZH. Label free flexible electrochemical DNA biosensor for selective detection of Shigella flexneri in real food samples. Talanta 2023; 253:123909. [PMID: 36152607 DOI: 10.1016/j.talanta.2022.123909] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [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: 07/03/2022] [Revised: 08/26/2022] [Accepted: 08/30/2022] [Indexed: 12/13/2022]
Abstract
An effective tool for early-stage selective detection of the foodborne bacterial pathogen Shigella flexneri (S. flexneri) is essential for diagnosing infectious diseases and controlling outbreaks. Here, a label-free electrochemical DNA biosensor for monitoring S. flexneri is developed. To fabricate the biosensor, detection probe (capture probe) is immobilized on the surface of poly melamine (P-Mel) and poly glutamic acid (PGA), and disuccinimidyl suberate (DSS) functionalized flexible indium tin oxide (ITO) electrode. Anthraquinone-2-sulfonic acid monohydrate sodium salt (AQMS) is used as a signal indicator for the detection of S. flexneri. The proposed DNA biosensor exhibits a wide dynamic range with concentration of the targets ranging from 1 × 10-6 to 1 × 10-21 molL-1 with a limit of detection (LOD) of 7.4 × 10-22 molL-1 in the complementary linear target of S. flexneri, and a detection range of 8 × 1010-80 cells/ml with a LOD of 10 cells/ml in real S. flexneri sample. The proposed flexible biosensor provides high specificity for the detection of S. flexneri compared to other target signals such as discrete base mismatches and different bacterial species. The developed biosensor displayed excellent recoveries in detecting S. flexneri in spiked food samples. Therefore, the proposed biosensor can serve as a model methodology for the detection of other pathogens in a broad span of industries.
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Affiliation(s)
- M R Ali
- Dept. of Chemical Engineering, Jashore University of Science and Technology, Jashore, 7408, Bangladesh; Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - M S Bacchu
- Dept. of Chemical Engineering, Jashore University of Science and Technology, Jashore, 7408, Bangladesh; Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - S Das
- Dept. of Microbiology, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - S Akter
- Dept. of Microbiology, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - M M Rahman
- Faculty of Science and Information Technology, Daffodil International University, Dhaka, 1207, Bangladesh
| | - M Aly Saad Aly
- Department of New Biology, Daegu Gyeongbuk Institute of Science & Technology (DGIST), 333 Techno Jungang-daero, Daegu, 42988, South Korea
| | - M Z H Khan
- Dept. of Chemical Engineering, Jashore University of Science and Technology, Jashore, 7408, Bangladesh; Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology, Jashore, 7408, Bangladesh.
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Rahman MM, Byanju B, Lamsal BP. Protein, lipid, and chitin fractions from insects: Method of extraction, functional properties, and potential applications. Crit Rev Food Sci Nutr 2023:1-17. [PMID: 36691837 DOI: 10.1080/10408398.2023.2168620] [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] [Indexed: 01/25/2023]
Abstract
Edible insects are accepted as food and feed ingredients in many parts of the world. Insects account for more than 80% of animal kingdom providing rich biodiversity of protein and lipid profiles compared to conventional livestock. Insect biomasses contain an average of 35-62% protein, 3-57% lipid, and 3-12% chitin, and their nutritional values are widely recognized due to their presence, including minerals, and vitamins. While whole insects are consumed as eggs, larvae, pupae, or adults, there has been a recent uptick in interest to use fractions, e.g., protein, lipid, and chitin, as food and feed ingredients. To utilize these fractions in various food and feed preparations, a deeper understanding of the physicochemical as well as functional properties of the ingredients is required, which are generally impacted by extraction and preparation processes. Thus, the methods of extraction/purification are important to preserve the quality and functional properties of these ingredients. This paper discusses the extraction methods for insect protein, lipid, and chitin, their functional properties, and potential applications in food and feed applications.
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Affiliation(s)
- Md Mahfuzur Rahman
- Department of Food Science and Human Nutrition, Iowa State University, Ames, Iowa, USA
| | - Bibek Byanju
- Department of Food Science and Human Nutrition, Iowa State University, Ames, Iowa, USA
| | - Buddhi P Lamsal
- Department of Food Science and Human Nutrition, Iowa State University, Ames, Iowa, USA
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Yeasmin F, Nessa A, Rahman MM, Huq MM, Afroz L, Sharmin T, Akhter T, Rukunuzzaman M, Ferdous AR. A Comparative Study of Body Mass Index and Blood Pressure between Sedentary and Non-Sedentary Workers. Mymensingh Med J 2023; 32:61-64. [PMID: 36594302] [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
Sedentary lifestyle are spreading worldwide because of lack of available spaces for exercise, increased occupational sedentary behaviors such as office work and the increased prevalence of television and video devices. Increased incidence of sedentary lifestyle and obesity in developed and developing countries is one of the major risk factors for the development of cardiovascular diseases. This study was undertaken to analyze the differences in anthropometric and cardiovascular parameters in sedentary and non-sedentary male subjects. This analytical type of cross sectional study was carried out in the Department of Physiology, Mymensingh Medical College, Mymensingh, Bangladesh from July 2021 to June 2022. This study consisted 50 male employees of 25-60 years who worked in an office were study group (Group II) and control group Group-I) consisted of 50 male age matched physical laborers. BMI was calculated as weight in kilogram divided by the height in meter square i.e. kg/m². Blood Pressure was measured by indirect auscultatory method with an aneroid sphygmomanometer. Statistical analysis was done by using Student's un-paired 't' test. Values expressed as mean ± standard deviation. P value was taken as significant at 5 percent confidence level. The mean±SD BMI in kg/m² of Group I and Group II were 21.90±2.22 and 29.32±3.13 respectively. The mean±SD systolic blood pressure of Group I and Group II were 112.20±6.79 and 145.10±8.11 and mean±SD diastolic blood pressure of Group I and Group II were 72.80±5.73 and 91.00±5.05 respectively. The BMI and blood pressure were increased in sedentary group compared to non-sedentary group. From the study, it appears that the risk for cardiovascular disease is increased in sedentary workers.
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Affiliation(s)
- F Yeasmin
- Dr Fahmida Yeasmin, Lecturer, Department of Physiology, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Rahman FU, Ahmed MT, Khan E, Rahman MM, Ahamed S, Mamun S, Hasan MM. Performance Evaluation of Several Transfer Learning Models for Classification of Road Surface State. IFIP Advances in Information and Communication Technology 2023:76-88. [DOI: 10.1007/978-3-031-38296-3_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Chowdhury MM, Mahmud R, Quiyum MA, Rahman MM, Mohammed S, Sobhan SA, Warid MM. Primary Sclerosing Cholangitis- A Rare Cause of Obstructive Jaundice: A Case Report. Mymensingh Med J 2023; 32:257-260. [PMID: 36594330] [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
Diagnosis of primary sclerosing cholangitis (PSC) is often very difficult and may have a suspicion with altered liver functions. PSC is known to be associated with inflammatory bowel disease. This article presents a case study of a 70 years old male patient who presented with obstructive jaundice with recurrent episode of cholangitis in June 2019 at Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh. Evaluation revealed beaded appearance in MRCP with positive relevant markers which raised suspicion of PSC and it was confirmed by biopsy and histopathology of the affected segment in biliary tree. The importance of early detection of primary sclerosing cholangitis in an effort to decrease the morbidity and mortality from cholangiocarcinoma will also be emphasized and our management according to local protocol and outcome of this patient.
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Affiliation(s)
- M M Chowdhury
- Professor Dr Md Mohsen Chowdhury, Professor and Chairman, Hepatobiliary, Pancreatic & Liver transplant Surgery Department, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
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Bhattacharjee B, Rahman MM, Hibbs RE, Stowell MHB. A simple flash and freeze system for cryogenic time-resolved electron microscopy. Front Mol Biosci 2023; 10:1129225. [PMID: 36959978 PMCID: PMC10028177 DOI: 10.3389/fmolb.2023.1129225] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 12/21/2022] [Accepted: 02/16/2023] [Indexed: 03/09/2023] Open
Abstract
As the resolution revolution in CryoEM expands to encompass all manner of macromolecular complexes, an important new frontier is the implementation of cryogenic time resolved EM (cryoTREM). Biological macromolecular complexes are dynamic systems that undergo conformational changes on timescales from microseconds to minutes. Understanding the dynamic nature of biological changes is critical to understanding function. To realize the full potential of CryoEM, time resolved methods will be integral in coupling static structures to dynamic functions. Here, we present an LED-based photo-flash system as a core part of the sample preparation phase in CryoTREM. The plug-and-play system has a wide range of operational parameters, is low cost and ensures uniform irradiation and minimal heating of the sample prior to plunge freezing. The complete design including electronics and optics, manufacturing, control strategies and operating procedures are discussed for the Thermo Scientific™ Vitrobot and Leica™ EM GP2 plunge freezers. Possible adverse heating effects on the biological sample are also addressed through theoretical as well as experimental studies.
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Affiliation(s)
- Biddut Bhattacharjee
- University of Colorado Boulder, Boulder, United States
- *Correspondence: Biddut Bhattacharjee, ; Michael H. B. Stowell,
| | | | - Ryan E. Hibbs
- University of Texas Southwestern Medical Center, Dallas, United States
| | - Michael H. B. Stowell
- University of Colorado Boulder, Boulder, United States
- *Correspondence: Biddut Bhattacharjee, ; Michael H. B. Stowell,
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Rahman MM, Lamsal BP. Effects of atmospheric cold plasma and high-power sonication on rheological and gelling properties of mung bean protein dispersions. Food Res Int 2023; 163:112265. [PMID: 36596176 DOI: 10.1016/j.foodres.2022.112265] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 03/14/2022] [Revised: 11/23/2022] [Accepted: 11/27/2022] [Indexed: 12/03/2022]
Abstract
The objective of this study was to evaluate the impact of high-power sonication (HPS) and atmospheric cold plasma (ACP) on gelling and rheological properties of mung bean protein dispersions. HPS at 250 J/mL for 2 min and ACP at 80 kV for 5 min were applied to different concentrations of mung bean protein isolate (MBPI). Control and HPS-treated MBPI dispersions showed a minimum gelling concentration (MGC) of 16% w/v, while ACP-treated dispersions started to gel at 14% w/v. Dynamic rheology of dispersions at 16 % concentrations showed that HPS and ACP treatments could reduce the initial gelling temperature to 52° and 65 °C, respectively, from 75 °C for no-treatment control. ACP-treated 16% protein dispersions showed a six-fold higher storage modulus (G') than the control. In addition, ACP treatment resulted in significantly more hydrophobic bonds (∼5.0 g/L) than control (∼1.4 g/L) and HPS-treated (∼1.1 g/L) MBPI gels; however, the net interaction of ionic, hydrogen, hydrophobic, and disulfide bonds was higher in HPS-treated MBPI gels. Thus, both ACP and HPS treatments altered the gelling characteristics of mung bean protein dispersions- ACP reduced MGC and improved firmness, whereas HPS improved the springiness, cohesiveness, gumminess, chewiness, and resilience of the gels.
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Affiliation(s)
- Md Mahfuzur Rahman
- Department of Food Science and Human Nutrition, Iowa State University, Ames, IA 50011, United States
| | - Buddhi P Lamsal
- Department of Food Science and Human Nutrition, Iowa State University, Ames, IA 50011, United States.
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Rahman MM, Paul SI, Rahman A, Haque MS, Ador MAA, Foysal MJ, Islam MT, Rahman MM. Suppression of Streptococcosis and Modulation of the Gut Bacteriome in Nile Tilapia ( Oreochromis niloticus) by the Marine Sediment Bacteria Bacillus haynesii and Advenella mimigardefordensis. Microbiol Spectr 2022; 10:e0254222. [PMID: 36453920 PMCID: PMC9769507 DOI: 10.1128/spectrum.02542-22] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 11/11/2022] [Indexed: 12/03/2022] Open
Abstract
Streptococcosis is one of the major threats to Nile tilapia (Oreochromis niloticus) in most regions of the world. Recently, Enterococcus faecalis has been widely reported to be involved in streptococcosis in O. niloticus in Asia and Africa. This study aimed to isolate beneficial marine bacteria to evaluate their effects on growth, hematological parameters, nonspecific immunity, the gut bacteriome, and streptococcosis prevention efficacy in O. niloticus. A total of 36 marine soil bacteria were isolated, and in vitro screening was conducted to determine their antibacterial activities against fish pathogens. Two antagonistic bacteria were identified based on 16S rRNA gene sequencing, Bacillus haynesii CD223 and Advenella mimigardefordensis SM421. These bacteria were incorporated into fish feed and fed to O. niloticus for 90 days. The application of these strains via incorporation into fish feed significantly promoted growth, improved hematological parameters and immunoglobulin M (IgM) levels, modulated the gut bacteriome by reducing the load of pathogenic Enterococcus spp., and developed disease prevention efficacy in O. niloticus. Furthermore, in vivo assays revealed that the inclusion of extracellular products (ECPs) (at 250 μg mL-1) of CD223 and SM421 with feed significantly enhanced the rate of survival (100%) of O. niloticus from streptococcosis compared to the controls (only 30%). The ECPs of these bacteria also prevented 90 to 100% of fish from developing streptococcosis. These strains could be promising for safe use in O. niloticus farming to prevent and control the emergence of streptococcosis caused by E. faecalis. IMPORTANCE Nile tilapia (Oreochromis niloticus) is one of the most economically important cultured fish species throughout the world. Streptococcosis is a significant threat to global Nile tilapia farming. Enterococcus faecalis has recently emerged as an important pathogen of streptococcosis in Asia and Africa. The application of antibiotics and probiotics and vaccination are the major ways to combat streptococcosis. However, the extensive use of antibiotics leads to the development of antibiotic resistance in pathogenic as well as environmental bacteria, which is a great threat to public health. There is no study on preventing streptococcosis caused by E. faecalis using beneficial bacteria. For the first time, the present study demonstrated that two marine bacteria, Bacillus haynesii strain CD223 and Advenella mimigardefordensis strain SM421, have great potential for controlling streptococcosis in Nile tilapia. These bacteria also enhanced the growth, improved hematological parameters and IgM levels, and positively modulated the gut bacteriome of Nile tilapia.
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Affiliation(s)
- Md Mahfuzur Rahman
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Sulav Indra Paul
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Ashikur Rahman
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Md Shameul Haque
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Md Ali Arman Ador
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Md Javed Foysal
- Department of Genetic Engineering and Biotechnology, Shahjalal University of Science and Technology, Sylhet, Bangladesh
| | - Md Tofazzal Islam
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Md Mahbubur Rahman
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
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Rahman MM, Rosenberg M, Flores G, Parsell N, Akter S, Alam MA, Rahman MM, Edejer T. A systematic review and meta-analysis of unmet needs for healthcare and long-term care among older people. Health Econ Rev 2022; 12:60. [PMID: 36482044 PMCID: PMC9733388 DOI: 10.1186/s13561-022-00398-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 09/19/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND The absolute number of older individuals needing medical care and long-term care (LTC) is increasing globally due to the growing ageing population. However, it is uncertain who and what proportion of the population has access to care. Therefore, a systematic review and meta-analysis of the prevalence and reasons for unmet needs for healthcare and long-term care among older people, 65 years old and above, across countries was conducted. METHODS An information specialist performed a comprehensive search of four major databases (PubMed, EMBASE, Web of Science, and CINAHL) from inception to June 2020 without restrictions on language and date. We did random-effects meta-analysis to obtain pooled prevalence. We stratified the meta-analysis by reasons for unmet need categorized by barrier dimension (availability, accessibility, affordability, and acceptability), survey year, geographic location, and socio-demographic characteristics of the older individual. RESULTS After screening 3912 articles, we included 101 studies published between 1996 and 2020. Of the 101 studies, 87 studies reported unmet healthcare needs and 14 studies reported unmet LTC needs. Overall, 10.4% (95% CI, 7.3-13.9) of the older population had unmet needs for healthcare. The common reasons for unmet healthcare needs were cost of treatment, lack of health facilities, lack of/conflicting time, health problem not viewed as serious, and mistrust/fear of provider. A significant variation in pooled prevalence of unmet healthcare needs due to cost was found by gender (male [10.9, 95% CI, 8.9-13.1] vs female [14.4, 95% CI, 11.8-17.3]), educational level (primary or less [13.3, 95% CI, 9.6-17.6] vs higher [7.5, 95% CI, 5.9-9.3]), self-reported health (poor [23.2, 95% CI, 18.8-27.8] vs good [4.4, 95% CI, 3.4-5.5]), insurance status (insured [9.0, 95% CI, 7.5-10.6] vs uninsured [27.7, 95% CI, 24.0-31.5]), and economic status of population (poorest [28.2, 95% CI, 14.1-44.9] vs richest [7.1, 95% CI, 3.8-11.3]). One in four (25.1, 95% CI, 17.1-34.2) older people had unmet needs in LTC. Rural residents had a higher prevalence of unmet needs in LTC compared to their urban counterparts. CONCLUSION With the population ageing globally, it is necessary to improve access to health care and LTC for older people. Ensuring affordability of health services, reducing geographical barriers, and improving acceptability, will be critical in reducing unmet need. Unmet needs for healthcare were concentrated in population with no education, poor economic group, outpatient health facility user, and uninsured group. With education and economic-based inequalities at the forefront, all countries should focus on improving access to health services by reducing the burden related to healthcare costs.
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Affiliation(s)
- Md Mizanur Rahman
- Hitotsubashi Institute for Advanced Study, Hitotsubashi University, Tokyo, Japan.
| | - Megumi Rosenberg
- Centre for Health Development, World Health Organization, Kobe, Japan
| | - Gabriela Flores
- Department of Health Systems Governance and Financing, World Health Organization, Geneva, Switzerland
| | - Nadia Parsell
- Hitotsubashi Institute for Advanced Study, Hitotsubashi University, Tokyo, Japan
| | - Shamima Akter
- Hitotsubashi Institute for Advanced Study, Hitotsubashi University, Tokyo, Japan
| | - Md Ashraful Alam
- Department of Computational Diagnostic Radiology and Preventive Medicine, The University of Tokyo Hospital, Tokyo, Japan
| | | | - Tessa Edejer
- Department of Health Systems Governance and Financing, World Health Organization, Geneva, Switzerland
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Yeasmin L, Rahman MM, Banik RK, Islam AM. Effect of Full Veneer Crown on Periodontal Health in Diabetic and Non-Diabetic Patients. Mymensingh Med J 2022; 31:1005-1012. [PMID: 36189545] [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
Both periodontal disease and diabetes mellitus (DM) are important public health issues. Compared to the non-diabetic counterparts, diabetic patients more often suffer from dental problems, sometimes requiring fixed-dental prosthesis. Gingival inflammation and other forms of periodontal disease are the common complications of the dental prosthesis. This prospective comparative experimental study was intended to compare the outcome of the periodontal health after placement of full veneer crown in diabetic and non-diabetic patients in the Department of Prosthodontics, Faculty of Dentistry, Bangabandhu Sheikh Mujib Medical University (BSMMU), Bangladesh from April 2018 to March 2019. This study involved consecutive 53 diabetic and 53 non-diabetic adult patients of either sex, undergoing treatment with full veneer crown in either maxillary or mandibular posterior teeth with healthy periodontal tissue. The outcome variables were: plaque index, gingival index, periodontal pocket depth, and bleeding on probing, at baseline, 3 months and 6 months post-procedure. Gingival index in the diabetic group reached from 0 at baseline to nearly 0.1 at 3 months which then steeply reached to 0.2 at 6 months interval, whereas the same index in the non-diabetic group reached from 0 at baseline to 0.009 at 3 months and 0.04 at 6 months interval. Plaque index of diabetic patients increased from 0 at baseline to 0.5 at 3- and 6-months interval, whereas the plaque index of non-diabetic patients increased to 0.4 at 3 months and then decreased again 0.3 at 6 months interval (p<0.001). Periodontal pocket depth of diabetic group increased from 1.0mm at baseline to 1.2 and 1.5mm at 3 and 6 months respectively, while the same measure in the non-diabetic group increased to 1.1 and 1.3mm at 3 and 6 months respectively (p<0.001). Bleeding on probing index in the diabetic group reached sharply to 1.5 at 3 months from 0 at baseline and then it reached 2.3 at 6 months, whereas the same index in non-diabetic group reached 1.1 and 1.6 at 3 and 6 months respectively (p<0.001). Periodontal health outcome of full veener crown in diabetic patients is adversely affected compared to that in non-diabetic patients.
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Affiliation(s)
- L Yeasmin
- Dr Lovely Yeasmin, Lecturer, Prosthodontics, Shaheed Suhrawardy Medical College, Dhaka, Bangladesh; E-mail:
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Dhungel B, Rahman MS, Rahman MM, Bhandari AKC, Le PM, Biva NA, Gilmour S. Reliability of Early Estimates of the Basic Reproduction Number of COVID-19: A Systematic Review and Meta-Analysis. Int J Environ Res Public Health 2022; 19:11613. [PMID: 36141893 PMCID: PMC9517346 DOI: 10.3390/ijerph191811613] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/06/2022] [Accepted: 09/09/2022] [Indexed: 06/16/2023]
Abstract
OBJECTIVE This systematic review estimated the pooled R0 for early COVID-19 outbreaks and identified the impact of study-related factors such as methods, study location and study period on the estimated R0. METHODS We searched electronic databases for human studies published in English between 1 December 2019 and 30 September 2020 with no restriction on country/region. Two investigators independently performed the data extraction of the studies selected for inclusion during full-text screening. The primary outcome, R0, was analysed by random-effects meta-analysis using the restricted maximum likelihood method. RESULTS We identified 26,425 studies through our search and included 151 articles in the systematic review, among which 81 were included in the meta-analysis. The estimates of R0 from studies included in the meta-analysis ranged from 0.4 to 12.58. The pooled R0 for COVID-19 was estimated to be 2.66 (95% CI, 2.41-2.94). The results showed heterogeneity among studies and strong evidence of a small-study effect. CONCLUSIONS The high heterogeneity in studies makes the use of the R0 for basic epidemic planning difficult and presents a huge problem for risk assessment and data synthesis. Consensus on the use of R0 for outbreak assessment is needed, and its use for assessing epidemic risk is not recommended.
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Affiliation(s)
- Bibha Dhungel
- Graduate School of Public Health, St. Luke’s International University, Tokyo 104-0045, Japan
- Department of Health Policy, National Center for Child Health and Development, Tokyo 157-8535, Japan
| | - Md. Shafiur Rahman
- Research Centre for Child Mental Development, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan
- United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Hamamatsu 431-3192, Japan
| | | | - Aliza K. C. Bhandari
- Graduate School of Public Health, St. Luke’s International University, Tokyo 104-0045, Japan
- Department of Health Policy, National Center for Child Health and Development, Tokyo 157-8535, Japan
| | - Phuong Mai Le
- Graduate School of Public Health, St. Luke’s International University, Tokyo 104-0045, Japan
| | - Nushrat Alam Biva
- Graduate School of Public Health, St. Luke’s International University, Tokyo 104-0045, Japan
| | - Stuart Gilmour
- Graduate School of Public Health, St. Luke’s International University, Tokyo 104-0045, Japan
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Rahman MM, Jung J, Islam MR, Rahman MM, Nakamura R, Akter S, Sato M. Global, regional, and national progress in financial risk protection towards universal health coverage, 2000-2030. Soc Sci Med 2022; 312:115367. [PMID: 36167025 DOI: 10.1016/j.socscimed.2022.115367] [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: 03/30/2022] [Revised: 08/18/2022] [Accepted: 09/08/2022] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Complete (100%) protection against catastrophic health expenditure (CHE) and impoverishment is the main target of universal health coverage (UHC). Evidence-based estimates must be at the heart of policy development for UHC, further research using updated data is essential to monitor, track, and compare country progress up to 2030. We estimate global, regional, and country-level CHE and impoverishment during 2000-2030. METHODS We aggregated 636 data points from 140 countries that were conducted between 2000 and 2021. We used Bayesian hierarchical model for trend and projection analysis. Furthermore, we constructed scenario-based projections of CHE and impoverishment based on 5% GDP spending on health and per capita health expenditure (PCHE) of $86. RESULTS Most countries fail to achieve financial protection targets by 2030, with the global incidence of CHE predicted to persist around 7% at 10% threshold. CHE is predicted to increase in most of Asia (Southern: 8.1% in 2000 to 13.4% in 2030; Central: 3.6%-23.2%; Eastern: 8.3%-14.4%; and Western: 7.3%-20.2%), Northern Africa (12.4%-27.2%), Eastern (7.1%-14.9%) and Northern Europe (6.6%-13.2%). In contrast, a decrease is predicted in Oceania, Latin America and the Caribbean, and Northern America. By 2030, incidence of impoverishment is predicted to be 0% worldwide at $3.10 poverty line, however in several African and Soth Asian countries is predicted to be high impoverishment. The scenario-based analysis indicated that CHE and impoverishment is expected to decrease in 41 and 42 countries for GDP increase and 43 and 62 for PCHE increase respectively compared to current spending on health. CONCLUSION To accelerate progress towards reducing financial protection, governments should carefully assess the country context to determine how health can be prioritised through government spending to reduce out-of-pocket payments.
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Affiliation(s)
- Md Mizanur Rahman
- Hitotsubashi Institute for Advanced Study, Hitotsubashi University, Tokyo, Japan.
| | - Jenny Jung
- Maternal and Child Health Program, Burnet Institute, Melbourne, Australia; Global Public Health Research Foundation, Dhaka, Bangladesh
| | - Md Rashedul Islam
- Hitotsubashi Institute for Advanced Study, Hitotsubashi University, Tokyo, Japan; Department of Global Health Policy, School of International Health, The University of Tokyo, Tokyo, Japan
| | | | - Ryota Nakamura
- Hitotsubashi Institute for Advanced Study, Hitotsubashi University, Tokyo, Japan
| | - Shamima Akter
- Hitotsubashi Institute for Advanced Study, Hitotsubashi University, Tokyo, Japan
| | - Motohiro Sato
- Hitotsubashi Institute for Advanced Study, Hitotsubashi University, Tokyo, Japan
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Rahman MM, Kamrul-Hasan AB, Jasmine T, Hossain MS, Rahman MM, Saha PK, Sarker MA. Relationship of Serum Uric Acid Level with Acute Ischemic Stroke: A Single-Center, Hospital-Based Study from Bangladesh. Mymensingh Med J 2022; 31:677-682. [PMID: 35780350] [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: 02/20/2023]
Abstract
The role of uric acid as a risk factor for cerebrovascular disease, particularly acute ischemic stroke, is controversial and there is little information about this in our setting. This cross-sectional study was conducted at the departments of Medicine and Neurology of a tertiary hospital in Bangladesh over one year, from January 2018 to December 2018, to estimate serum uric acid (SUA) levels and assess its risk factor potential in patients with acute ischemic stroke. Forty-five patients with acute ischemic stroke were enrolled and a similar number of age and sex-matched healthy individuals were recruited for comparison. All known risk factors for stroke were searched and SUA levels were measured. SUA was higher (6.66±2.33 vs. 5.23±1.81 mg/dL; p=0.002) and hyperuricemia was more frequent (64.4% vs. 24.4%, p<0.001) in stroke patients in comparison to the controls. Hypertension was more frequent among stroke patients. In multivariate analysis, hyperuricemia [OR 4.51 (95% CI 1.67-12.16; p<0.05)] and HTN [OR 6.31 (95% CI 2.26-17.61; p<0.001)] were found to be independent risk factors of acute ischemic stroke. The stroke and control groups had no differences in age, sex, residence, education, monthly income, occupation, fasting plasma glucose, triglyceride and high-density lipoprotein cholesterol levels. Total cholesterol and low-density lipoprotein cholesterol levels were higher in the stroke patients. SUA may be used as a marker for increased risk of ischemic stroke. However, larger-scale studies are needed to get more insight into our findings.
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Affiliation(s)
- M M Rahman
- Dr Mohammad Mostafizur Rahman, Resident Physician, Department of Medicine, Sir Salimullah Medical College (SSMC) Mitford Hospital, Dhaka, Bangladesh; E-mail:
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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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Hasan MK, Rashid MM, Hussain KS, Rahman MM, Rahaman MA, Alam I, Farjana J, Mamun A, Mahmud J, Majumder AR. Association of Aortic Valve Sclerosis with Angiographic Severity of Coronary Artery Disease in Patients with Acute Coronary Syndrome, Aged ≤65 Years. Mymensingh Med J 2022; 31:767-772. [PMID: 35780362] [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
Aortic valve sclerosis (AVS) represents a degenerative process that progresses with advancing age. The study was intended to find out the association between aortic valve sclerosis and the severity of CAD in patient's age ≤65 years with acute coronary syndrome. This cross-sectional analytical study was carried out in the department of cardiology, National Institute of Cardiovascular Diseases (NICVD), Dhaka, Bangladesh during a period of October 2017 to September 2018. A total of 140 Acute coronary syndrome (ACS) patients undergoing coronary angiogram during index hospitalization were included in the study. Study patients were divided into two groups on the basis of echocardiographic presence or absence of Aortic valve sclerosis (AVS), with 70 patients in each group. Group I was patients with aortic valve sclerosis and Group II was patients without aortic valve sclerosis. All patients underwent transthoracic echocardiography before they underwent coronary angiography on different days. Severity of CAD was determined by Gensini score and Vessel score. Association of traditional risk factors (smoking habit, hypertension, diabetes mellitus, dyslipidaemia and family history of CAD) with severity of CAD was investigated. Coronary angiography showed that AVS group had a higher positive rate of CAD (82.9% vs. 54.3%, p<0.001) and incidence rate of triple vessel CAD (40% vs. 14.3%, p<0.001) than non-AVS group. Gensini score had higher in AVS group than non AVS group (37.9±27.8 vs. 12.5±14.2; p<0.001). Multivariate analysis showed that AVS (p=0.01) and age (p=0.04) were independent predictors of the presence of significant coronary artery disease. The study concluded that echocardiographically detected AVS is an independent predictor of coronary artery disease severity. There is positive correlation between severity of AVS and severity of CAD in patient's age ≤65 years with ACS.
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Affiliation(s)
- M K Hasan
- Dr Md Kamrul Hasan, Assistant Registrar, Department of Cardiology, National Institute of Cardiovascular Diseases (NICVD), Dhaka, Bangladesh; E-mail:
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