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Zhong L, Li Y, He X, Dey SK, Zhang Q, Banerjee S. Identification and functional characterization of a novel truncating splicing variant in COL4A5 gene causing X-linked Alport syndrome with astigmatism. Chin Med J (Engl) 2023; 136:2635-2637. [PMID: 36805600 PMCID: PMC10617893 DOI: 10.1097/cm9.0000000000002417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Indexed: 02/22/2023] Open
Affiliation(s)
- Lijuan Zhong
- Division of Maternal-Fetal Medicine, Affiliated Shenzhen Bao’an Women's and Children's Hospital, Jinan University, Shenzhen, Guangdong 518102, China
| | - Yin Li
- Department of Oncology, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, Guangdong 510632, China
| | - Xiaohong He
- Division of Maternal-Fetal Medicine, Affiliated Shenzhen Bao’an Women's and Children's Hospital, Jinan University, Shenzhen, Guangdong 518102, China
| | - Subrata Kumar Dey
- Department of Biotechnology, Centre for Genetic Studies, School of Biotechnology and Biological Sciences, Maulana Abul Kalam Azad University of Technology (Formerly West Bengal University of Technology), Kolkata, West Bengal 700064, India
| | - Quanfu Zhang
- Division of Maternal-Fetal Medicine, Affiliated Shenzhen Bao’an Women's and Children's Hospital, Jinan University, Shenzhen, Guangdong 518102, China
| | - Santasree Banerjee
- Department of Genetics, College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, China
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Majumder D, Roychoudhry S, Kundu S, Dey SK, Saha C. Hydrophobic quercetin encapsulated hemoglobin nanoparticles: formulation and spectroscopic characterization. J Biomol Struct Dyn 2022; 40:9860-9869. [PMID: 34096466 DOI: 10.1080/07391102.2021.1936181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Various natural proteins are finding application in drug delivery for their high biodegradability and biocompatibility. Albumins are well explored and now focus is shifting to other proteins like hemoglobin (Hb) with unique structural properties. In the present study Hb is allowed to denature at pH 5.0 and model hydrophobic drug quercetin (Q) is encapsulated via self-assembly and hydrophobic interactions. Fluorimetric titrations record highest binding between Hb and Q at pH 5.0, rendering significant structural changes in Hb as captured in CD spectra. A decrease in fluorescence life time of tryptophan residues from 3.31 ns in Hb to 2.89 ns in presence of Q at pH 5.0; surmises efficient binding of Q at the hydrophobic core housing tryptophan. Peak shifts in Fourier transform infrared spectroscopy spectra of Hb-Q compared to Hb evidence significant interactions between them at pH 5.0. Significant spectral changes in soret band region of Hb on addition of Q at pH 5.0 envisages unfolding of porphyrin ring and binding influence of Q. Efficient formation of Hb-Q nanoparticles (NPs) at pH 5.0 is established by DLS, SEM and TEM.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Debashis Majumder
- Department of Environmental Sciences, Maulana Abul Kalam Azad University of Technology, Haringhata, Kolkata, India.,bDepartment of Biotechnology, Maulana Abul Kalam Azad University of Technology, Haringhata, Kolkata, India
| | - Shaon Roychoudhry
- Department of Environmental Sciences, Maulana Abul Kalam Azad University of Technology, Haringhata, Kolkata, India.,bDepartment of Biotechnology, Maulana Abul Kalam Azad University of Technology, Haringhata, Kolkata, India
| | - Somashree Kundu
- UGC DAE Consortium for Scientific Research, Kolkata Centre, Kolkata, India
| | - Subrata Kumar Dey
- Department of Environmental Sciences, Maulana Abul Kalam Azad University of Technology, Haringhata, Kolkata, India.,bDepartment of Biotechnology, Maulana Abul Kalam Azad University of Technology, Haringhata, Kolkata, India
| | - Chabita Saha
- Department of Environmental Sciences, Maulana Abul Kalam Azad University of Technology, Haringhata, Kolkata, India.,bDepartment of Biotechnology, Maulana Abul Kalam Azad University of Technology, Haringhata, Kolkata, India
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Goswami S, Singha S, Khanra B, Chakraborty P, Saha R, Benmansour S, Kumar Dey S, Gómez García CJ, Kumar S. Double dicyanamide decorated double phenoxide bridged MnIII dimer with Single–Molecule Magnetic behaviour and bio-catalytic activity. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Zhang R, Hao Y, Xu Y, Qin J, Wang Y, Kumar Dey S, Li C, Wang H, Banerjee S. Whole exome sequencing identified a homozygous novel mutation in SUOX gene causes extremely rare autosomal recessive isolated sulfite oxidase deficiency. Clin Chim Acta 2022; 532:115-122. [PMID: 35679912 DOI: 10.1016/j.cca.2022.06.005] [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: 10/21/2021] [Revised: 05/29/2022] [Accepted: 06/03/2022] [Indexed: 11/03/2022]
Abstract
BACKGROUND Isolated sulfite oxidase deficiency (ISOD) is a rare type of life-threatening neurometabolic disorders characterized by neonatal intractable seizures and severe developmental delay with an autosomal recessive mode of inheritance. Germline mutation in SUOX gene causes ISOD. Till date, only 32 mutations of SUOX gene have been identified and reported to be associated with ISOD. METHODS Here, we investigated a 5-days old Chinese female child, presented with intermittent tremor or seizures of limbs, neonatal encephalopathy, subarachnoid cyst and haemorrhage, dysplasia of corpus callosum, neonatal convulsion, hyperlactatemia, severe metabolic acidosis, hyperglycemia, and hyperkalemia. RESULTS Whole exome sequencing identified a novel homozygous transition (c.1227G > A) in exon 6 of the SUOX gene in the proband. This novel homozygous variant leads to the formation of a truncated sulfite oxidase (p.Trp409*) of 408 amino acids. This variant causes partial loss of the dimerization domain of sulfite oxidase. Hence, it is a loss-of-function variant. Proband's father and mother is carrying this novel variant in a heterozygous state. This variant was not found in 200 ethnically matched normal healthy control individuals. CONCLUSIONS Our study not only expanded the mutational spectrum of SUOX gene associated with ISOD, but also strongly suggested the significance of whole exome sequencing for identifying candidate genes and novel disease-causing variants.
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Affiliation(s)
- Rui Zhang
- Division of Maternal-Fetal Medicine, Jinan University-affiliated Shenzhen Bao'an Women's and Children's Hospital, Shenzhen 518102, China
| | - Yajing Hao
- Department of Radiology, Jinan University-affiliated Shenzhen Bao'an Women's and Children's Hospital, Jinan University, Shenzhen 518102, China
| | - Ying Xu
- Department of Ultrasound, Jinan University-affiliated Shenzhen Bao'an Women's and Children's Hospital, Shenzhen 518102, China
| | - Jiale Qin
- Department of Radiology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yanfang Wang
- Department of Ultrasound, Jinan University-affiliated Shenzhen Bao'an Women's and Children's Hospital, Shenzhen 518102, China
| | - Subrata Kumar Dey
- Department of Biotechnology, Centre for Genetic Studies, School of Biotechnology and Biological Sciences, Maulana Abul Kalam Azad University of Technology (Formerly West Bengal University of Technology), Salt Lake City, Kolkata, India
| | - Chen Li
- Department of Cell Biology and Medical Genetics, School of Medicine, Zhejiang University, Hangzhou, China
| | - Huilin Wang
- Division of Maternal-Fetal Medicine, Jinan University-affiliated Shenzhen Bao'an Women's and Children's Hospital, Shenzhen 518102, China.
| | - Santasree Banerjee
- Department of Genetics, College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, China.
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Nautiyal A, Mondal T, Mitra D, Goel A, Dey SK, Kaushik A. A SIMPLE AND NOVEL APPROACH TO STUDY KINETICS AND ESTIMATE RADIATION DOSES FROM INTERNALLY ADMINISTERED RADIOPHARMACEUTICALS USING AN EXTERNAL DOSE MEASUREMENT SYSTEM. Radiat Prot Dosimetry 2021; 196:141-152. [PMID: 34585244 DOI: 10.1093/rpd/ncab141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 08/28/2021] [Accepted: 09/03/2021] [Indexed: 06/13/2023]
Abstract
Various methods have been reported to study radiotracer kinetics and make internal dosimetry feasible in the routine clinical nuclear medicine practice. The aim of the present study was to quantify cumulative activity and organ doses using an indigenously designed and fabricated external dose measurement system. The measurement was demonstrated on patients undergoing whole-body (WB) 18F-FDG (Fluorine-18-fluorodeoxyglucose) direct positron emission tomography/computed tomography investigations. An external dose measurement system comprising of an ionisation chamber-survey meter and the movable focussing collimator was used to quantify the uptake of 18F-FDG in liver and brain. Cumulative activity and normalised cumulative activity in these organs were calculated. The results were validated by performing measurements on a phantom uniformly filled with known activity of 18F-FDG.The difference in the absorbed dose estimated with and without collimator was statistically significant (p < 0.05). The external dose measurement technique is relatively novel, convenient and reliable for the assessment of internal absorbed dose of organs.
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Affiliation(s)
- Amit Nautiyal
- Institute of Nuclear Medicine & Molecular Imaging, AMRI Hospitals, Dhakuria, Kolkata, India
- Amity Institute of Nuclear Science & Technology, Amity University Uttar Pradesh, Noida, India
| | - Tanmoy Mondal
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, Salt Lake, Kolkata, India
| | - Deepanjan Mitra
- Institute of Nuclear Medicine & Molecular Imaging, AMRI Hospitals, Dhakuria, Kolkata, India
| | - Alpana Goel
- Amity Institute of Nuclear Science & Technology, Amity University Uttar Pradesh, Noida, India
| | - Subrata Kumar Dey
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, Salt Lake, Kolkata, India
| | - Aruna Kaushik
- Institute of Nuclear Medicine & Allied Sciences, Brig. S.K. Mazumdar Marg, Timarpur, Delhi, India
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Nautiyal A, Mondal T, Goel A, Dey SK, Mitra D. Biological Effects Associated with Internal and External Contamination of Diagnostic Nuclear Medicine Sources: An In vitro Study. Indian J Nucl Med 2021; 36:288-292. [PMID: 34658553 PMCID: PMC8481857 DOI: 10.4103/ijnm.ijnm_17_21] [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: 02/07/2021] [Revised: 05/19/2021] [Accepted: 05/29/2021] [Indexed: 11/19/2022] Open
Abstract
Aim: In a Nuclear Medicine department, the risk of external and internal contamination in radiation workers is much higher than in other medical radiation facilities. The risk associated with both types of contaminations should be quantified to estimate the radiation dose received by the personal. Here, we designed an in vitro model to see the impact of internal and external contamination of F-18 and Technetium-99 m (Tc-99 m) on DNA damages. Methodology: Chinese hamster lung fibroblast V79 was used for all of the experiments. Irradiation was performed internally and externally (scenarios activity is mixed with the cell line [Internal] and activity kept at 1 cm distance from cell line [external]) using two different diagnostic radioactive sources (Tc-99 m and F-18) of known quantity 37 MBq. Total cumulated activity (MBq-min) was calculated up to one half-life of sources for both internal and external setups. An alkaline single gel electrophoresis technique (comet assay) was used for DNA damage analysis. Olive tail moment (OTM) was used to characterize DNA damage. Results: We have not observed any significant difference (P > 0.05) in OTM between internal and external irradiation for cumulated activity presented before one half-life of both diagnostic isotopes. However, a significant difference in OTM was noted between internal and external irradiation for cumulated activity presented at one half-life of radioactive sources (P < 0.05). DNA damage with internal exposure was found to be 17.28% higher for F-18 and 23% higher for Tc-99 m than external exposure at one half-life of radioactive sources. Overall, we noted greater DNA damage in F-18 as compared to Tc-99 m. Conclusions: Our in vitro study practically demonstrated that internal contamination is more hazardous than external exposure.
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Affiliation(s)
- Amit Nautiyal
- Institute of Nuclear Medicine and Molecular Imaging, AMRI Hospitals, Uttar Pradesh, India.,Amity Institute of Nuclear Science and Technology, Amity University, Noida, Uttar Pradesh, India
| | - Tanmoy Mondal
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, Kolkata, West Bengal, India
| | - Alpana Goel
- Amity Institute of Nuclear Science and Technology, Amity University, Noida, Uttar Pradesh, India
| | - Subrata Kumar Dey
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, Kolkata, West Bengal, India
| | - Deepanjan Mitra
- Institute of Nuclear Medicine and Molecular Imaging, AMRI Hospitals, Uttar Pradesh, India
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Nautiyal A, Mondal T, Manii M, Kaushik A, Goel A, Dey SK, Mitra D. Significant reduction of radiation dose and DNA damage in 18F- FDG whole-body PET/CT study without compromising diagnostic image quality. Journal of Radiation Research and Applied Sciences 2021. [DOI: 10.1080/16878507.2021.1969197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Amit Nautiyal
- Institute of Nuclear Medicine & Molecular Imaging, Amri Hospitals, Dhakuria, Kolkata
- Amity Institute of Nuclear Science & Technology, Amity University Uttar Pradesh, Noida
| | - Tanmoy Mondal
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, Salt Lake, Kolkata
| | - Manu Manii
- Department of Nuclear Medicine, Quadra Medical Services Private Limited, Kolkata
| | - Aruna Kaushik
- Institute of Nuclear Medicine & Allied Sciences, Timarpur, Delhi
| | - Alpana Goel
- Amity Institute of Nuclear Science & Technology, Amity University Uttar Pradesh, Noida
| | - Subrata Kumar Dey
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, Salt Lake, Kolkata
| | - Deepanjan Mitra
- Institute of Nuclear Medicine & Molecular Imaging, Amri Hospitals, Dhakuria, Kolkata
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Zhang L, Gao Y, Du Q, Liu L, Li Y, Dey SK, Banerjee S, Liao Z. Genetic Profiles and Three-year Follow-up Study of Chinese Males With Congenital Hypogonadotropic Hypogonadism. J Sex Med 2021; 18:1500-1510. [PMID: 37057435 DOI: 10.1016/j.jsxm.2021.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 06/06/2021] [Accepted: 07/06/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND The correlation between long-term treatment outcomes with genotypes in congenital hypogonadotropic hypogonadism (CHH) males is rarely reported. AIM To investigate the correlations among genotypes, phenotypes, and treatment outcomes for CHH male patients. METHODS Whole exome sequencing was performed for 73 Chinese CHH males from one academic center. Patients self-selected one of the 4 treatments: pulsatile Gonadorelin pump (PGP), cyclical gonadotropins therapy (CGT), human menopausal gonadotropin monotherapy, or testosterone replacement treatment. Clinical assessments were performed every 3 months for 3 years. OUTCOMES The pathogenicity of variants was determined. Baseline clinical features, spermatogenesis outcomes were analysed. RESULTS 62 variants were identified in 51 patients (69.9%), 17 of which were novel. Among these mutations, variants on FGFR1, PROKR2, CHD7, ANOS1 and NSMF gene were 16.1%, 16.1%, 11.3%, 8.1% and 8.1% respectively. 11 patients followed the oligogenic pattern (21.6%). All CHD7 patients had hearing impairment, or structural deformities of external/ inner ear and were diagnosed as CHARGE syndrome. 24.7% of CHH patients manifested with ear/hearing anomalies. KS patients had higher rates of cryptorchidism history and ear/hearing anomalies than normosmic CHH subjects. Male patients with PROKR2 mutations showed relatively better testicular development, less dental deformity when compared with FGFR1 mutations. About 30% normosmic patients defined by simple olfactory assessment showed olfactory nerve center (ONC) dysplasia under nasal sinus MRI examination. Among the CHH males treated with CGT or PGP, 70.2% reached spermatogenesis within 3 years of treatment. CLINICAL IMPLICATIONS No direct correlation was observed between certain responsible genes and spermatogenic outcomes. When CHH patients were identified with CHD7 variants, ear/hearing evaluation should be carefully performed. The precise assessment of ONC development was advised for normosmic CHH subjects. STRENGTHS & LIMITATIONS This study provided informative long-term treatment data of CHH male patients screened with whole exome sequencing. The limitations included small number of subgroups with multifaceted gene variants, clinical heterogeneity, uncontrolled sperm-inducing treatment method. The seventeen novel mutations worth experimental validation in the future. CONCLUSION The clinical severity is partially related with specific gene variants, and detailed individualized data and outcomes were provided. Ear/hearing anomalies were closely connected with CHD7 variants, and were common problems for CHH patients. Simple olfactory assessment underestimated the true olfactory deficit. L. Zhang, Y. Gao, Q. Du, et al. Genetic Profiles and Three-year Follow-up Study of Chinese Males With Congenital Hypogonadotropic Hypogonadism. J Sex Med 2021;XX:XXX-XXX.
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Affiliation(s)
- Luyao Zhang
- First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yuting Gao
- First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Qin Du
- First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Liyi Liu
- First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yanbing Li
- First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Subrata Kumar Dey
- Department of Biotechnology, Centre for Genetic Studies, School of Biotechnology and Biological Sciences, Maulana Abul Kalam Azad University of Technology (Formerly West Bengal University of Technology), Salt Lake City Kolkata, West Bengal, India
| | - Santasree Banerjee
- Department of Genetics, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Zhihong Liao
- First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Mondal T, Nautiyal A, Ghosh S, Loffredo CA, Mitra D, Saha C, Dey SK. An evaluation of DNA double strand break formation and excreted guanine species post whole body PET/CT procedure. J Radiat Res 2021; 62:590-599. [PMID: 34037214 PMCID: PMC8273794 DOI: 10.1093/jrr/rrab025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/10/2020] [Indexed: 06/12/2023]
Abstract
Ionizing radiation-induced oxidation and formation of deoxyribonucleic acid (DNA) double strand breaks (DSBs) are considered the exemplar of genetic lesions. Guanine bases are most prone to be oxidized when DNA and Ribonucleic acid (RNA) are damaged. The repair processes that are initiated to correct this damage release multiple oxidized guanine species into the urine. Hence, the excretion of guanine species can be related with the total repair process. Our study quantified the total DSBs formation and the amount of guanine species in urine to understand the DNA break and repair process after whole body (WB) exposure to 18F-FDG positron emission tomography/computed tomography (PET/CT). A total of 37 human participants were included with control and test groups and the average radiation dose was 27.50 ± 2.91 mSv. γ-H2AX foci assay in the collected blood samples was performed to assess the DSBs, and excreted guanine species in urine were analyzed by a competitive ELISA method. We observed a significant increase of DNA damage that correlated well with the increasing dose (p-value 0.009) and body weight (p-value 0.05). In the test group, excreted guanine species in urine sample significantly increased (from 24.29 ± 5.82 to 33.66 ± 7.20 mg/mmol creatinine). A minimum (r2 = 0.0488) correlation was observed between DSBs formation and excreted guanine species. A significant difference of DNA damage and 8-OHdG formation was seen in the test group compared to controls. Larger population studies are needed to confirm these observations, describe the fine-scale timing of changes in the biomarker levels after exposure, and further clarify any potential risks to patients from PET/CT procedures.
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Affiliation(s)
- Tanmoy Mondal
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, Salt Lake, Kolkata 700064, India
| | - Amit Nautiyal
- Institute of Nuclear Medicine & Molecular Imaging, AMRI Hospitals, Dhakuria, Kolkata 700029, India
| | - Somiranjan Ghosh
- Department of Biology, Howard University, Washington, DC 20059, USA
| | | | - Deepanjan Mitra
- Institute of Nuclear Medicine & Molecular Imaging, AMRI Hospitals, Dhakuria, Kolkata 700029, India
| | - Chabita Saha
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, Salt Lake, Kolkata 700064, India
| | - Subrata Kumar Dey
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, Salt Lake, Kolkata 700064, India
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Akhter M, Shahidullah M, Mannan MA, Dey SK, Jahan I, Moni SC, Shabuj MK, Rahman T, Rumman M, Begum B. Clinical Risk Index for Babies II Score as a Predictor of Neonatal Death among Preterm Low Birth Weight Babies. Mymensingh Med J 2021; 30:601-608. [PMID: 34226444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Clinical risk index for babies II (CRIB II) score is simple, validated and widely used risk-adjustment instrument for predicting mortality among preterm low birth weight babies. To assess the efficacy of CRIB II score as a tool to predict the risk for neonatal death among the preterm and LBW babies admitted in NICU of BSMMU, a tertiary care hospital in Bangladesh. This prospective observational study was conducted in Department of Neonatology in BSMMU from September 2016 to August 2017. Inborn preterm neonates with gestational age ≤34 weeks admitted were enrolled in the study. CRIB-II score was calculated for each infant within 1 hour of birth from birth weight, gestational age, sex, admission temperature and base excess. The primary outcome measured in the study was neonatal death or survival up to 28 days. Total 112 patients were finally analyzed in this study. Mean CRIB II score was significantly higher in the non-survivor group compared to the survivor group (p-value <0.0001). Receiver operating characteristic (ROC) curve analysis for mortality prediction by CRIB II score, gestational age and birth weight showed AUC 0.87 (95% CI 0.76-0.97), 0.76 (95% CI 0.63-0.88) and 0.79 (95% CI 0.66-0.92) respectively. ROC curve analysis also revealed that the most suitable cut-off points for predicting mortality were 5 for CRIB II score, 32 weeks for gestational age and 1250 gram for birth weight. Using these most suitable cut-off points, CRIB II score had the highest sensitivity and specificity followed by birth weight and gestational age. In this study, CRIB II score was found to be an effective tool for predicting neonatal death among preterm LBW babies. It predicted outcome more accurately than birth weight or gestational age alone.
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Affiliation(s)
- M Akhter
- Dr Mohosina Akhter, Assistant Professor, Department of Neonatology, Mymensingh Medical College, Mymensingh, Bangladesh; E-mail:
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Abstract
Objective: Trisomy 21 is a genetic disorder that shows premature aging symptoms. As an aging marker, telomere length is therefore of importance in trisomy families. Methods: We included 63 maternally originated trisomy 21 and 77 control families with infants in the first data set; 48 trisomy 21 and 60 control children in the second set; and 14 paternally originated trisomy 21 families in the third data set. We used Southern blot to measure the telomere length. Results: (1) Offsprings' telomere length increased with parents' age (p < .0001). (2) Trisomy 21 infants had longer telomere than the controls (p < .0001). (3) Post-birth, the telomere attrition rate was higher in cases than in controls (58 bps/year vs. 38 bps/year). Conclusion: (1) Our data supports the older parents-longer gamete telomere hypothesis. (2) Trisomy 21 patients are born with longer telomeres, (3) with advancing trisomy 21 age, the telomere shortens more quickly than euploids.
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Affiliation(s)
- Mandar Bhattacharya
- Human Genetics, Maulana Abul Kalam Azad University of Technology, Kolkata, India
| | - Pranami Bhaumik
- Maulana Abul Kalam Azad University of Technology, Kolkata, India
| | - Priyanka Ghosh
- Maulana Abul Kalam Azad University of Technology, Kolkata, India
| | - Poulami Majumder
- Maulana Abul Kalam Azad University of Technology, Kolkata, India
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Majumder P, Ray PP, Ghosh S, Dey SK. Potential Effect of Tobacco Consumption through Smoking and Chewing Tobacco on IL1beta Protein Expression in Chronic Periodontitis Patients: In Silico Molecular Docking Study. IEEE/ACM Trans Comput Biol Bioinform 2020; 17:1364-1371. [PMID: 30676974 DOI: 10.1109/tcbb.2019.2894737] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Detrimental effect of bad oral habits, such as smoking and chewing tobacco, on chronic periodontitis (CP) manifest chronic inflammation of gingival tissues which majorly results in gum bleeding, and teeth loss. A genetic association study of Interleukin 1 beta (IL1β) has been conducted in CP patients having smoking and chewing tobacco habits in regular life style. A molecular docking study has been consequently done to analyze the effect of tobacco on CP progression in depth. All statistical evaluation has been done by using SPSS v16.0. The findings of the study show the significant association of IL1β gene polymorphisms with CP increased susceptibility in combination of oral habits as mentioned earlier. The docking profile has showed the highest binding affinity of IL1β protein with the Nicotine derived Nitrosamine Ketone (NNK), one of the derivatives of nicotine which is in-taken through the habits associated with smoking and chewing tobacco. Nicotine, N-nitrosoanabasine, and N-nitrosonornicotine, the other derivatives, have also demonstrated significant impact over the IL1β protein-caused altered expression. Thus, this study concluded that the harmful effect of tobacco may increase the inflammation in periodontia by inducing the inflammatory active site of the IL1β protein in the CP patients.
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Ahmed F, Dey SK, Shahidullah M, Mannan MA, Raj AY, Sharmin S. Early Versus Delayed Enteral Feeding for Achieving Full Feeding in Preterm Growth-Restricted Infants: A Randomized Clinical Trial. Mymensingh Med J 2020; 29:638-645. [PMID: 32844806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Optimal enteral nutrition is essential for growth restricted preterm infants because if nutrition remains suboptimal during early days of life, physical and neuro-developmental outcome might be in danger. However, chronic hypoxia during antenatal period makes them susceptible for feeding intolerance and necrotising enterocolitis during post natal period. So this randomized clinical trial was conducted in the department of Neonatology, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh from January 2018 to June 2019; to evaluate the effect of early versus delayed enteral feeding on preterm growth-restricted infants. During the study period, out of 127 infants with small for gestational age, 50 babies were enrolled and randomly assigned to either early feeding group (n=25) or late feeding group (n=25). Clinical characteristics at trial entry were well balanced between groups. Newborn enrolled in early feeding group reached full feed significantly faster than late feeding group (p=0.001; Hazard ratio 1.24). Early feeding group regained birth weight faster; experienced lesser incidence of neonatal sepsis, experienced less number of feed intolerance, had shorter mean duration of hospital stay and achieved higher weight on post natal age 16th days. All values were statistically significant. Early enteral feeding found to be safe and beneficial in reducing the time to reach full enteral feeding and better weight gain in growth restricted preterm infants.
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Affiliation(s)
- F Ahmed
- Dr Farzana Ahmed, Associate Professor & Head, Department of Paediatrics, Marks Medical College Hospital, Dhaka, Bangladesh; E-mail:
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14
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Abstract
Mammalian embryonic diapause is a reproductive phenomenon defined by the reversible arrest in blastocyst development and metabolic activity within the uterus which synchronously becomes quiescent to implantation. This natural strategy, evident in over 130 species across eight orders, can temporally uncouple conception from delivery until conditions are favorable for the survival of the mother and newborn. While the maternal endocrine milieu has been shown to be important for this process, the local molecular mechanisms by which the uterus and embryo achieve quiescence, maintain blastocyst survival and then resumes blastocyst activation with subsequent implantation in response to endocrine cues remains unclear. Here we review the first evidence that the proximal molecular control of embryonic diapause is conserved in three unrelated mammalian species which employ different endocrine programs to initiate diapause. In particular, uterine expression of muscle segment homeobox (Msx) genes Msx1 or Msx2 persists during diapause, followed by downregulation with blastocyst reactivation and implantation. Mice (Mus musculus) with conditional inactivation of Msx1 and Msx2 in the uterus fail to achieve diapause and reactivation. Remarkably, the mink (Neovison vison) and tammar wallaby (Macropus eugenii) share this pattern of MSX1 or MSX2 expression as in mice during delay - it persists during diapause and is rapidly downregulated upon implantation. Therefore, these findings were the first to provide evidence that there are common conserved molecular regulators in the uterus of unrelated mammals during embryonic diapause.
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Affiliation(s)
- J Cha
- Division of Reproductive Sciences, Cincinnati Children's Hospital Medical Center, USA.,Present address: Division of Diabetes, Endocrinology, and Metabolism, Department of Medicine, Vanderbilt University Medical Center, USA
| | - J C Fenelon
- School of Biosciences, University of Melbourne, Melbourne, Australia
| | - B D Murphy
- Centre de recherche en reproduction et fertilité, Université de Montréal, Québec, Canada
| | - G Shaw
- School of Biosciences, University of Melbourne, Melbourne, Australia
| | - M B Renfree
- School of Biosciences, University of Melbourne, Melbourne, Australia
| | - S K Dey
- Division of Reproductive Sciences, Cincinnati Children's Hospital Medical Center, USA
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Dey SK, Islam S, Jahan I, Shabuj KH, Begum S, Chisti MJ, Mannan MA, Shahidullah M, Chowdhury S. Association of Hyperbilirubinemia Requiring Phototherapy or Exchange Transfusion with Hearing Impairment among Admitted Term and Late Preterm Newborn in a NICU. Mymensingh Med J 2020; 29:405-413. [PMID: 32506097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Hearing impairment is one of the deleterious ramifications of neonatal hyperbilirubinemia, but its impact during the newborn period has not been well studied in Bangladesh. This prospective observational study was conducted during January 2016 to December 2017 in the Department of Neonatology and Otolaryngology-Head and Neck Surgery, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh to identify the relationship between hyperbilirubinemia requiring phototherapy or exchange transfusion with hearing impairment in term and late preterm neonates. Admitted term and late preterm neonates with hyperbilirubinemia requiring either phototherapy or exchange transfusion were taken as hyperbilirubinemia group. Neonates without hyperbilirubinemia from postnatal ward were taken as control. All newborn were screened with Distortion Product Otoacoustic Emissions (DPOAE) prior to discharge from hospital. A second screen was done in referred newborn after one month of first screen. A diagnostic Auditory Brainstem Response (ABR) was performed in both the ears prior to 3 months of postnatal age if referred in both 1st and 2nd screen. Total 264 neonates included in this study; 132 in the hyperbilirubinemia and 132 in the control group. In the hyperbilirubinemia group 74(56.06%) were male and 58(43.94) were female. Mean gestational ages in the hyperbilirubinemia group and control group were 36.95±1.60 weeks and 37.01±1.67 weeks respectively. Newborn in the hyperbilirubinemia group, 4(3.03%) had hearing impairment and none had hearing impairment in the control group. Peak Total Serum Bilirubin (TSB) 23mg/dl was found as best cut off value with a sensitivity of 100% and specificity of 93% for the development hearing impairment. Hearing impairment was significantly more frequent among newborn with TSB level >23mg/dl when compared to those having TSB level ≤23mg/dl (20% vs. 0.9%, p=0.009; OR=29, 95% CI 2.79, 301). Hearing impairment was associated with newborns with hyperbilirubinemia requiring phototherapy or exchange transfusion. Peak TSB level >23mg/dl can be predictive for the development of hearing impairment.
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Affiliation(s)
- S K Dey
- Professor Dr Sanjoy Kumer Dey, Professor, Department of Neonatology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
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16
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Akther M, Moni SC, Jahan I, Shabuj KH, Dey SK, Mannan MA, Shahidullah M. Antenatal Bartter Syndrome: A Case Report. Mymensingh Med J 2020; 29:469-472. [PMID: 32506108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Bartter syndrome is an autosomal recessive disorder manifested by a defect in sodium-potassium-chloride transport in the thick ascending limb of Henle with different genetic origins and molecular pathophysiology. Bartter syndrome usually a common disease in children and in early infancy presented with persistent polyuria and associated with dehydration, electrolyte imbalance, and failure to thrive. Though prompt diagnosis and proper treatment of Bartter syndrome may improve the outcome, some children will progress to renal failure. We report a case of a 6 days-old male infant who was admitted in Neonatal Intensive Care Unit, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh on 26 April 2018 for prematurity and low birth weight. On subsequent follow up he developed electrolyte imbalance and failure to thrive. Laboratory studies revealed hyponatremia, hypochloremic metabolic alkalosis with severe hypokalemia. When excessive chloride losses appear to be renal in origin and the patient has normal blood pressure and high levels of serum renin and aldosterone were considered as Bartter syndrome. Molecular genetic studies are indicated to identify the primary genetic defect.
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Affiliation(s)
- M Akther
- Dr Mahboba Akther, Resident Phase-B, Department of Neonatology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh
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17
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Kalra S, Dey SK, Shankar R, Kanitkar M. Antibiotic Prophylaxis for VCUG: A Cross-Sectional Observational Study. Indian J Pediatr 2020; 87:238. [PMID: 31916013 DOI: 10.1007/s12098-019-03166-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 12/20/2019] [Indexed: 10/25/2022]
Affiliation(s)
- Suprita Kalra
- Department of Pediatrics and Pediatric Nephrology, Command Hospital (SC), AFMC, Pune, India.
| | - S K Dey
- Department of Pediatric Surgery, Command Hospital (SC), AFMC, Pune, India
| | - R Shankar
- Department of Pediatric Surgery, Command Hospital (SC), AFMC, Pune, India
| | - Madhuri Kanitkar
- Department of Pediatrics and Pediatric Nephrology, Command Hospital (SC), AFMC, Pune, India
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18
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Han P, Wei G, Cai K, Xiang X, Deng WP, Li YB, Kuang S, Dong Z, Zheng T, Luo Y, Liu J, Guan Y, Li C, Dey SK, Liao Z, Banerjee S. Identification and functional characterization of mutations in LPL gene causing severe hypertriglyceridaemia and acute pancreatitis. J Cell Mol Med 2020; 24:1286-1299. [PMID: 31901151 PMCID: PMC6991700 DOI: 10.1111/jcmm.14768] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 09/23/2019] [Accepted: 09/30/2019] [Indexed: 12/21/2022] Open
Abstract
Hypertriglyceridaemia is a very rare disorder caused by the mutations of LPL gene, with an autosomal recessive mode of inheritance. Here, we identified two unrelated Chinese patients manifested with severe hypertriglyceridaemia and acute pancreatitis. The clinical symptoms of proband 1 are more severe than proband 2. Whole exome sequencing and Sanger sequencing were performed. Functional analysis of the identified mutations has been done. Whole exome sequencing identified two pairs of variants in LPL gene in the proband 1 (c.162C>A and c.1322+1G>A) and proband 2 (c.835C>G and c.1322+1G>A). The substitution (c.162C>A) leads to the formation of a truncated (p.Cys54*) LPL protein. The substitution (c.835C>G) leads to the replacement of leucine to valine (p.Leu279Val). The splice donor site mutation (c.1322+1G>A) leads to the formation of alternative transcripts with the loss of 134 bp in exon 8 of the LPL gene. The proband 1 and his younger son also harbouring a heterozygous variant (c.553G>T; p.Gly185Cys) in APOA5 gene. The relative expression level of the mutated LPL mRNA (c.162C>A, c.835C>G and c.1322+1G>A) showed significant differences compared to wild‐type LPL mRNA, suggesting that all these three mutations affect the transcription of LPL mRNA. These three mutations (c.162C>A, c.835C>G and c.1322+1G>A) showed noticeably decreased LPL activity in cell culture medium but not in cell lysates. Here, we identified three mutations in LPL gene which causes severe hypertriglyceridaemia with acute pancreatitis in Chinese patients. We also described the significance of whole exome sequencing for identifying the candidate gene and disease‐causing mutation in patients with severe hypertriglyceridaemia and acute pancreatitis.
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Affiliation(s)
- Peng Han
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Guohong Wei
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Ke Cai
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xi Xiang
- China National GeneBank, BGI-Shenzhen, Shenzhen, China.,BGI-Shenzhen, Shenzhen, China.,BGI Education Center, University of Chinese Academy of Sciences, Shenzhen, China
| | - Wang Ping Deng
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yan Bing Li
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Shan Kuang
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Zhanying Dong
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Tianyu Zheng
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China.,BGI Education Center, University of Chinese Academy of Sciences, Shenzhen, China
| | - Yonglun Luo
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China.,BGI-Shenzhen, Shenzhen, China.,Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Junnian Liu
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China.,BGI-Shenzhen, Shenzhen, China
| | - Yuanning Guan
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Chen Li
- Institute of Genetics and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, China
| | - Subrata Kumar Dey
- Department of Biotechnology, Centre for Genetic Studies, School of Biotechnology and Biological Sciences, Maulana Abul Kalam Azad University of Technology (Formerly West Bengal University of Technology), Kolkata, India.,Brainware university, Barasat, West Bengal, India
| | - Zhihong Liao
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Santasree Banerjee
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China.,BGI-Shenzhen, Shenzhen, China.,Brainware university, Barasat, West Bengal, India
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19
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Zhang R, Chen S, Han P, Chen F, Kuang S, Meng Z, Liu J, Sun R, Wang Z, He X, Li Y, Guan Y, Yue Z, Li C, Kumar Dey S, Zhu Y, Banerjee S. Whole exome sequencing identified a homozygous novel variant in CEP290 gene causes Meckel syndrome. J Cell Mol Med 2019; 24:1906-1916. [PMID: 31840411 PMCID: PMC6991682 DOI: 10.1111/jcmm.14887] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [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: 04/03/2019] [Revised: 11/15/2019] [Accepted: 11/22/2019] [Indexed: 12/01/2022] Open
Abstract
Meckel syndrome (MKS) is a pre‐ or perinatal multisystemic ciliopathic lethal disorder with an autosomal recessive mode of inheritance. Meckel syndrome is usually manifested with meningo‐occipital encephalocele, polycystic kidney dysplasia, postaxial polydactyly and hepatobiliary ductal plate malformation. Germline variants in CEP290 cause MKS4. In this study, we investigated a 35‐years‐old Chinese female who was 17+1 weeks pregnant. She had a history of adverse pregnancy of having foetus with multiple malformations. We performed ultrasonography and identified the foetus with occipital meningoencephalocele and enlarged cystic dysplastic kidneys. So, she decided to terminate her pregnancy and further genetic molecular analysis was performed. We identified the aborted foetus without postaxial polydactyly. Histological examination of foetal kidney showed cysts in kidney and thinning of the renal cortex with glomerular atrophy. Whole exome sequencing identified a novel homozygous variant (c.2144T>G; p.L715*) in exon 21 of the CEP290 in the foetus. Sanger sequencing confirmed that both the parents of the foetus were carrying this variant in a heterozygous state. This variant was not identified in two elder sisters of the foetus as well as in the 100 healthy individuals. Western blot analysis showed that this variant leads to the formation of truncated CEP290 protein with the molecular weight of 84 KD compared with the wild‐type CEP290 protein of 290 KD. Hence, it is a loss‐of‐function variant. We also found that the mutant cilium appears longer in length than the wild‐type cilium. Our present study reported the first variant of CEP290 associated with MKS4 in Chinese population.
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Affiliation(s)
- Rui Zhang
- Division of Maternal-Fetal Medicine, Bao'an Women and Children's Hospital, Jinan University, Shenzhen, China
| | - Shaoyun Chen
- Division of Maternal-Fetal Medicine, Bao'an Women and Children's Hospital, Jinan University, Shenzhen, China
| | - Peng Han
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Fangfang Chen
- Department of Pathology, Bao'an Maternity and Child Health Hospital, Shenzhen, China
| | - Shan Kuang
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Zhuo Meng
- Division of Maternal-Fetal Medicine, Bao'an Women and Children's Hospital, Jinan University, Shenzhen, China
| | - Junnian Liu
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China.,BGI-Shenzhen, Beishan Industrial Zone, Shenzhen, China
| | - Ruliang Sun
- Department of Pathology, Bao'an Maternity and Child Health Hospital, Shenzhen, China
| | - Zhiwei Wang
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Xiaohong He
- Division of Maternal-Fetal Medicine, Bao'an Women and Children's Hospital, Jinan University, Shenzhen, China
| | - Yong Li
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Yuanning Guan
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | | | - Chen Li
- Department of Cell Biology and Medical Genetics, School of Medicine, Zhejiang University, Hangzhou, China
| | - Subrata Kumar Dey
- Department of Biotechnology, Centre for Genetic Studies, School of Biotechnology and Biological Sciences, Maulana Abul Kalam Azad University of Technology (Formerly West Bengal University of Technology), Kolkata, India.,Brainware University, Barasat, India
| | - Yuanfang Zhu
- Division of Maternal-Fetal Medicine, Bao'an Women and Children's Hospital, Jinan University, Shenzhen, China
| | - Santasree Banerjee
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China.,BGI-Shenzhen, Beishan Industrial Zone, Shenzhen, China.,Brainware University, Barasat, India
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20
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Mondal T, Nautiyal A, Agrawal M, Mitra D, Goel A, Kumar Dey S. 18F-FDG-induced DNA damage, chromosomal aberrations, and toxicity in V79 lung fibroblast cells. Mutat Res Genet Toxicol Environ Mutagen 2019; 847:503105. [PMID: 31699341 DOI: 10.1016/j.mrgentox.2019.503105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 10/04/2019] [Accepted: 10/05/2019] [Indexed: 12/20/2022]
Abstract
18F-FDG PET/CT imaging is used in the diagnosis of diseases, including cancers. The principal photons used for imaging are 511 ke V gamma photons resulting from positron annihilation. The absorbed dose varies among body organs, depending on administered radioactivity and biological clearance. We have attempted to evaluate DNA double-strand breaks (DSB) and toxicity induced in V79 lung fibroblast cells in vitro by 18F-FDG, at doses which might result from PET procedures. Cells were irradiated by 18F-FDG at doses (14.51 and 26.86 mGy), comparable to absorbed doses received by critical organs during PET procedures. The biological endpoints measured were formation of γ-H2AX foci, mitochondrial stress, chromosomal aberrations, and cell cycle perturbation. Irradiation induced DSB (γH2AX assay), mitochondrial depolarization, and both chromosome and chromatid types of aberrations. At higher radiation doses, increased aneuploidy and reduced mitotic activity were also seen. Thus, significant biological effects were observed at the doses delivered by the 18F-FDG exposure and the effects increased with dose.
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Affiliation(s)
- Tanmoy Mondal
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, BF-142, Sector-I, Salt Lake, Kolkata, 700 064, West Bengal, India
| | - Amit Nautiyal
- Institute of Nuclear Medicine & Molecular Imaging, Advance Medicare & Research Institute, P-4&5, Gariahat Road Block-A, Scheme-L11, Dhakuria, Kolkata, 700029, West Bengal, India
| | - Milee Agrawal
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, BF-142, Sector-I, Salt Lake, Kolkata, 700 064, West Bengal, India
| | - Deepanjan Mitra
- Institute of Nuclear Medicine & Molecular Imaging, Advance Medicare & Research Institute, P-4&5, Gariahat Road Block-A, Scheme-L11, Dhakuria, Kolkata, 700029, West Bengal, India
| | - Alpana Goel
- Amity Institute of Nuclear Science & Technology, Amity University, Noida, Delhi, India
| | - Subrata Kumar Dey
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, BF-142, Sector-I, Salt Lake, Kolkata, 700 064, West Bengal, India.
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Das A, Konyak PM, Das A, Dey SK, Saha C. Physicochemical characterization of dual action liposomal formulations: anticancer and antimicrobial. Heliyon 2019; 5:e02372. [PMID: 31497672 PMCID: PMC6722287 DOI: 10.1016/j.heliyon.2019.e02372] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 12/10/2018] [Revised: 03/27/2019] [Accepted: 08/22/2019] [Indexed: 01/22/2023] Open
Abstract
Background Cancer till date remains one of the world's most life threatening disease accompanied by risk of secondary infections. Therefore formulations carrying anticancer drugs which can also decrease the risk of secondary infection are inevitable. Chemotherapeutic drug doxorubicin along with flavonoids quercetin and epigallocatechin gallate (EGCG) is simultaneously loaded on liposomal formulation exploiting the amphiphilic property of the liposomes. Results Atomic force microscope imaging reveal the size of liposomal formulation loaded with doxorubicin, quercetin and EGCG to be greater than void liposome confirming the presence of drugs. Liposomal stability is improved by PEGylation; adding to the drug release time in vitro. The charge of phosphatidylcholine is rendered positive by coating the formulation with histone. The average size of the formulation is 342 nm. The encapsulation efficiency of doxorubicin, quercetin and EGCG is found to be 65.8%, 96.8% and 98% respectively. The above formulation demonstrated both anticancer and antimicrobial activity. Conclusion The formulation will provide dual anticancer and antimicrobial therapy thereby evading secondary infection in cancer patients along with chemotherapy.
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Affiliation(s)
- Asmita Das
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, NH-12, Simhat, Haringhata, Nadia- 741249 and BF-142, Salt Lake, Kolkata, 700 064, India
| | - Pangwan M Konyak
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, NH-12, Simhat, Haringhata, Nadia- 741249 and BF-142, Salt Lake, Kolkata, 700 064, India
| | - Argha Das
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, NH-12, Simhat, Haringhata, Nadia- 741249 and BF-142, Salt Lake, Kolkata, 700 064, India
| | - Subrata Kumar Dey
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, NH-12, Simhat, Haringhata, Nadia- 741249 and BF-142, Salt Lake, Kolkata, 700 064, India
| | - Chabita Saha
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology, NH-12, Simhat, Haringhata, Nadia- 741249 and BF-142, Salt Lake, Kolkata, 700 064, India
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Majumder P, Panda SK, Ghosh S, Dey SK. Interleukin gene polymorphisms in chronic periodontitis: A case-control study in the Indian population. Arch Oral Biol 2019; 101:156-164. [DOI: 10.1016/j.archoralbio.2019.03.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 03/21/2019] [Accepted: 03/22/2019] [Indexed: 01/24/2023]
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Majumder P, Ghosh S, Dey SK. Matrix metalloproteinase gene polymorphisms in chronic periodontitis: a case-control study in the Indian population. J Genet 2019; 98:32. [PMID: 30945680] [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: 06/09/2023]
Abstract
Chronic periodontitis (CP) is the common form of inflammatory oral disease. Matrix metalloproteinases (MMPs) play a pivotal role in the progression of CP by degrading gingival tissue and its remodelling. Here, we conducted a case-control study to investigate a possible association of single-nucleotide polymorphism of MMP genes and their interaction with CP in the Indian population. A total of 357 DNA samples of venous blood was isolated, of which 157 were identified as CP patients and 200 were healthy individuals. Genotyping of six MMP genes (MMP1, MMP3, MMP7, MMP8, MMP12 and MMP13) was done using polymerase chain reaction following Sanger's method of sequencing. Statistical analyses were performed by SPSS v16.0, R package (SNPassoc). Gene-gene interactions were evaluated by MDR 3.0.2. The frequency of 6A allele of MMP3 -11715A-6A gene polymorphisms (36%) and G allele of MMP8 +17G-C gene polymorphisms (34%) were higher in the CP population compared with the healthy population (19% and 24%, respectively). A significant association of T allele of MMP8 -799C-T gene promoter polymorphism was found with CP (OR = 2.95, 95%CI = 2.16 - 4.04, P < 0.0001). Genotypic frequency of MMP12 -82A-G polymorphism is associated with CP risk while its allelic distribution is not (OR = 1.32, 95%CI = 0.93 - 1.88, P = 0.129). Gene-gene interactions show the best cross validation consistency model, i.e. MMP1 -519A-G X MMP7 -181A-G X MMP8 -799C-T polymorphismswith a value of 9/10. This gene-gene interaction shows that the significant association of MMP8 -799C-T polymorphism with CP increased susceptibility. Allelic distribution of MMP8+17G-C and MMP3-11715A-6A polymorphisms revealed their protective role towards decreased risk of CP. MMP1 -519A-G and MMP7 -181A-G polymorphisms show combinatorial synergistic effect on CP risk.
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Affiliation(s)
- Poulami Majumder
- Department of Biotechnology, Centre for Genetic Studies, School of Biotechnology and Biological Sciences, Maulana Abul Kalam Azad University of Technology (Formerly West Bengal University of Technology), Kolkata 700 064, India.
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24
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Dey SK, Choudhury CR, Dey SP, Dey DK, Mondal N, Mahalli SOG, Malik KA, Mitra S. Synthesis and the Crystal Structure of a Copper(II) Complex Dervied from Novel Tridentate Ligand: An Unexpected One. Journal of Chemical Research 2019. [DOI: 10.3184/030823402103170510] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A novel tridentate ligand C5H4NCONHCOC5H4N (HL) has been formed by Cannizzaro type reaction of pyridine-2-carboxaldehyde and NaNCO in the presence of copper metal ion and its mononuclear distorted square pyramidal complex [Cu(L)(NCO)(H2O)], 1 has been synthesised and characterised.
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Affiliation(s)
- Subrata Kumar Dey
- Department of Chemistry, Jadavpur University, Calcutta - 700 032, India
| | | | - Sankar Prasad Dey
- Department of Chemistry, Jadavpur University, Calcutta - 700 032, India
| | - Dilip Kumar Dey
- Department of Chemistry, Jadavpur University, Calcutta - 700 032, India
| | - Nijhuma Mondal
- Department of Chemistry, Jadavpur University, Calcutta - 700 032, India
| | - S. Ozra Ghodsi Mahalli
- Department of Chemistry, University of Wales, PO Box- 912, Park Place, Cardiff CF 10 3TB, UK
| | - K.M. Abdul Malik
- Department of Chemistry, University of Wales, PO Box- 912, Park Place, Cardiff CF 10 3TB, UK
| | - Samiran Mitra
- Department of Chemistry, Jadavpur University, Calcutta - 700 032, India
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Nautiyal A, Mondal T, Mukherjee A, Mitra D, Kaushik A, Goel HC, Goel A, Dey SK. Quantification of DNA damage in patients undergoing non-contrast and contrast enhanced whole body PET/CT investigations using comet assay and micronucleus assay. Int J Radiat Biol 2019; 95:710-719. [PMID: 30707050 DOI: 10.1080/09553002.2019.1577569] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 01/12/2023]
Abstract
Objective: To quantify DNA damage in patients undergoing non-contrast and contrast-enhanced 18F-FDG PET/CT whole body positron emission tomography/computed tomography (WB PET/CT) investigations using comet assay technique and micronucleus assay, and to study the effect of other baseline parameters of patients on DNA damage. Methodology: Eighty-four patients referred for 18F-FDG PET/CT investigation were included in the study of which 44 patients underwent contrast-enhanced WB PET/CT and 40 patients underwent non-contrast WB PET/CT investigations. The investigations were performed on Discovery 690 PET/CT. For contrast-enhanced investigation, Omnipaque300 was injected intravenously based on the patient body weight. Absorbed dose resulting from the intravenous administration of 18F-FDG was estimated using the ICRP 106 dose coefficients. Radiation dose from the acquisition of CT scans was estimated using CT dose index and dose-length product. Blood samples were collected from the patients for DNA damage analysis. Comet assay and MN assay was used to assess the DNA damage. The Differences in the comet TM (Tail Moment) and MNBC % in both groups were calculated. Result: The radiation dose received by the study population during 18F-FDG WB PET/CT examination was 27.03 ± 2.33 mSv. Comet TM and percentage frequency of MNBC % was 65.22 ± 35.42 and 18.55 ± 10.14, respectively in the patients injected with contrast and 42.49 ± 28.52 and 13.76 ± 7.52 for non-contrast group. Significant increase in DNA damage was observed in the contrast group as compared to non-contrast group. Significant association was observed between patient weight, contrast volume and TM and MNBC%. Baseline parameters of the patients did not show significant correlation with TM and MNBC%. Conclusion: The patients undergoing contrast-enhanced WB PET/CT investigations have demonstrated higher DNA damage. The DNA damage was also observed to be more in heavier patients. The other baseline parameters of patients like age, sex, CBG, serum creatinine did not show any correlation with DNA damage.
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Affiliation(s)
- Amit Nautiyal
- a Institute of Nuclear Medicine & Molecular Imaging , AMRI Hospitals , Kolkata , India
| | - Tanmoy Mondal
- b Department of Biotechnology , Maulana Abul Kalam Azad University of Technology , Kolkata , India
| | - Anirban Mukherjee
- a Institute of Nuclear Medicine & Molecular Imaging , AMRI Hospitals , Kolkata , India
| | - Deepanjan Mitra
- a Institute of Nuclear Medicine & Molecular Imaging , AMRI Hospitals , Kolkata , India
| | - Aruna Kaushik
- c Institute of Nuclear Medicine & Allied Sciences , Delhi , India
| | | | - Alpana Goel
- e Amity Institute of Nuclear Science & Technology, Amity University , Noida , India
| | - Subrata Kumar Dey
- b Department of Biotechnology , Maulana Abul Kalam Azad University of Technology , Kolkata , India
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An J, Yang J, Wang Y, Wang Y, Xu B, Xie G, Chai S, Liu X, Xu S, Wen X, He Q, Liu H, Li C, Dey SK, Ni Y, Banerjee S. Targeted Next Generation Sequencing Revealed a Novel Homozygous Loss-of-Function Mutation in ILDR1 Gene Causes Autosomal Recessive Nonsyndromic Sensorineural Hearing Loss in a Chinese Family. Front Genet 2019; 10:1. [PMID: 30804975 PMCID: PMC6370629 DOI: 10.3389/fgene.2019.00001] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [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: 06/06/2018] [Accepted: 01/03/2019] [Indexed: 01/13/2023] Open
Abstract
Hereditary hearing impairment is one of the major and common birth defects in Chinese population. Non-syndromic sensorineural hearing loss (NSHL) is the most common types of hereditary hearing impairment. Genotypically and phenotypically NSHL is extremely heterogenous and follow either autosomal dominant or autosomal recessive or X-linked mode of inheritance. Presently, 127 genes have been identified to be associated with both syndromic and (NSHL). Here, we studied a Chinese family with moderate and profound hearing impairment. The proband is a 30-year old Chinese man. The proband was born with normal hearing and at the age of 5-years, the proband was first noticed with hearing impairment. Gradually and progressively the proband was presented with loss of hearing in his both right and left ears at the age of 30 years. The clinical symptoms, age of onset or progression to loss of hearing was similar in both the proband and his younger brother. The proband’s parents are phenotypically normal and non-consanguineous. Clinical diagnosis of the proband and his younger brother has been done by classical pure tone audiogram (PTA). Computed Tomography (CT) found no abnormality in bilateral external ear, middle ear and inner ear. Targeted next generation sequencing was performed with a panel of 127 genes reported to be associated with hereditary hearing impairment. A novel homozygous single nucleotide deletion (c.427delT) in exon 4 of ILDR1 gene has been identified in proband and in his younger brother. Sanger sequencing confirmed that proband’s father and mother are carrying this mutation in a heterozygous manner. This mutation has not been identified in 100 normal healthy control individuals. This mutation (c.427delT) causes frameshift (p.Tyr143Ilefs∗19) which leads to the formation of a truncated ILDR1 protein of 162 amino acids instead of the wild type ILDR1 protein of 546 amino acids. ILDR1 associated hereditary hearing impairment is very rare and this is the first report of identifying a loss-of-function mutation in ILDR1 gene associated with hereditary hearing impairment in Chinese population. Our present study also emphasized the significance of rapid, accurate and cost-effective screening for the patient with hereditary hearing impairment by targeted next generation sequencing.
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Affiliation(s)
- Jinxia An
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
| | - Jie Yang
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
| | - Yan Wang
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
| | - Yanxia Wang
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
| | - Baicheng Xu
- Lanzhou University Second Hospital, Lanzhou, China
| | - Guangmei Xie
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
| | - Sanming Chai
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
| | - Xiaoling Liu
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
| | - Sijuan Xu
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
| | - Xiaoxiao Wen
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
| | - Qing He
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
| | - Huijun Liu
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
| | - Chen Li
- Department of Cell Biology and Medical Genetics, School of Medicine, Zhejiang University, Hangzhou, China
| | - Subrata Kumar Dey
- Department of Biotechnology, Centre for Genetic Studies, School of Biotechnology and Biological Sciences, Maulana Abul Kalam Azad University of Technology (Formerly West Bengal University of Technology), Kolkata, India
| | - Yali Ni
- Gansu Provincial Maternity and Child-care Hospital, Lanzhou, China
| | - Santasree Banerjee
- Department of Cell Biology and Medical Genetics, School of Medicine, Zhejiang University, Hangzhou, China
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Wang D, Liang S, Zhang X, Dey SK, Li Y, Xu C, Yu Y, Li M, Zhao G, Zhang Z. Targeted next-generation sequencing approach for molecular genetic diagnosis of hereditary colorectal cancer: Identification of a novel single nucleotide germline insertion in adenomatous polyposis coli gene causes familial adenomatous polyposis. Mol Genet Genomic Med 2018; 7:e00505. [PMID: 30523670 PMCID: PMC6382451 DOI: 10.1002/mgg3.505] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 09/26/2018] [Accepted: 10/10/2018] [Indexed: 12/12/2022] Open
Abstract
Background Familial adenomatous polyposis (FAP) is an autosomal dominantly inherited disease which primarily manifested with developing adenomas or polyps in colon or rectum. It is caused by the germline mutations in adenomatous polyposis coli (APC) gene. Patients with FAP are usually manifested with “hundreds or even thousands” adenomas or polyps in colon or rectum. However, without proper clinical diagnosis and timely surgical interventions, colorectal adenomas, or polyps gradually increase in size and in numbers which finally leads to colorectal cancer (CRC) at the mean age of 36 years of the patient. Methods In this study, we identified a family with FAP. In this family, FAP has been diagnosed clinically based on symptoms, medical test reports, and positive family history for three generations. In order to unveil the molecular genetic consequences underlying the disease phenotype, we performed next‐generation sequencing with a customized and designed panel of genes reported to be associated with hereditary CRC. The variant identified by next‐generation sequencing has been validated by Sanger sequencing. Results A heterozygous novel insertion [c.3992_3993insA; p.Thr1332Asnfs*10] in exon 16 of APC gene has been identified. This novel insertion is cosegregated well with the FAP phenotype among all the affected members of this family. This mutation causes a frameshift by the formation of a premature stop codon which finally results in the formation of a truncated APC protein of 1,342 amino acids instead of the wild type APC protein of 2,843 amino acids. Hence, this is a loss‐of‐function mutation. This mutation was not found in unaffected family members or in normal control individuals. Conclusion Our present study emphasizes the importance of a novel approach of the gene panel‐based high‐throughput sequencing technology for easy and rapid screening for patients with FAP or CRC which will help the clinician for follow‐up and management.
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Affiliation(s)
- Dan Wang
- Department of Pathology, Tianjin Medical University General Hospital, Tianjin, China
| | - Shengyun Liang
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.,Shenzhen College of Advanced Technology, University of Chinese Academy of Sciences, Shenzhen, China
| | - Xipeng Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - Subrata Kumar Dey
- Department of Biotechnology, Centre for Genetic Studies, School of Biotechnology and Biological Sciences, Maulana Abul Kalam Azad University of Technology (Formerly West Bengal University of Technology), Salt Lake City, Kolkata, India
| | - Yuwei Li
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - Chen Xu
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - Yongjun Yu
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - Mingsen Li
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - Guoru Zhao
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Zhao Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
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Mondal T, Nautiyal A, Patwari A, Ozukum A, Mitra D, Goel A, Dey SK. DNA double strand breaks, repair and apoptosis following 511 keV
γ
-rays exposure using 18 fluorine positron emitter: an
in-vitro
study. Biomed Phys Eng Express 2018. [DOI: 10.1088/2057-1976/aae5b9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Bhaumik P, Ghosh P, Biswas A, Ghosh S, Pal S, Sarkar B, Kumar Dey S. Rare Intronic Variations inTP73Gene Found in Patients with Alzheimer’sDisease. INT J HUM GENET 2018. [DOI: 10.1080/09723757.2017.1421438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Pranami Bhaumik
- Department of Biotechnology, School of Biotechnology and Biological Sciences, Maulana Abul Kalam Azad University of Technology, West Bengal (Formerly known as West Bengal University of Technology) BF – 142, Salt Lake City, Sector I. Kolkata 700 064, West Bengal, India
| | - Priyanka Ghosh
- Department of Biotechnology, School of Biotechnology and Biological Sciences, Maulana Abul Kalam Azad University of Technology, West Bengal (Formerly known as West Bengal University of Technology) BF – 142, Salt Lake City, Sector I. Kolkata 700 064, West Bengal, India
| | - Atanu Biswas
- Department of Neurology, Bangur Institute of Neurosciences, 52/1A, S.N. Pandit Street, Kolkata 700 025, West Bengal, India
| | - Sujay Ghosh
- Department of Zoology, University of Calcutta, (Ballygunge Science College Campus), 35 Ballygunge Circular Road., Kolkata 700 019, West Bengal, India
| | - Sandip Pal
- Department of Neurology, Burdwan Medical College, Burdwan 713 104, West Bengal, India
| | - Biswanath Sarkar
- DNA Laboratory, Anthropological Survey of India, 27 Jawaharlal Nehru Road Kolkata 700 016, West Bengal, India
| | - Subrata Kumar Dey
- Department of Biotechnology, School of Biotechnology and Biological Sciences, Maulana Abul Kalam Azad University of Technology, West Bengal (Formerly known as West Bengal University of Technology) BF – 142, Salt Lake City, Sector I. Kolkata 700 064, West Bengal, India
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Khan KA, Alam J, Nahar N, Dey SK, Mannan MA, Shahidullah M. Predicting Neonatal Hyperbilirubinemia Using First Day Serum Bilirubin Level in Late Preterm and Term Healthy Newborn. Mymensingh Med J 2017; 26:854-862. [PMID: 29208875] [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: 06/07/2023]
Abstract
Hyperbilirubinemia is a common problem during the neonatal period and is the most common reason for readmission after early hospital discharge of the healthy near term and term infants. This early discharge policy along with limited follow-up facilities in developing countries and inadequate communication between physicians and parents necessitates a prognostic test to predict hyperbilirubinemia in these newborns; for early and effective management and prevention of potential complication before it occurred. This observational analytical study was done to determine the predictability of day1 total serum bilirubin (TSB) level as a screening test and identify the best cutoff value which would predict neonates likely to develop significant hyperbilirubinemia. The study was carried out in the Department of Neonatology and Department of Gynecology and Obstetrics, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh from 1st April 2013 to 31st March 2014. A TSB level of ≥17mg/dl after 72 hours was defined as significant hyperbilirubinemia. By purposive sampling method, 100 healthy late preterm and term neonates fulfilling the inclusion criteria were enrolled and 89 were finally analyzed. Among 89 neonates 14(15.74%) developed significant hyperbilirubinemia (Group II) and 75(84.26%) did not develop hyperbilirubinemia (Group I). Mean time of sample collection was similar in both groups. Mean TSB level on day1 was significantly higher in Group II (5.97±1.74mg/dl) than Group I (3.19±1.4mg/dl). By using ROC (Receiver Operating Characteristic) analysis, TSB level of 5.65mg/dl on day 1 has the best combination of sensitivity (86%) and specificity (91%) to predict neonates at risk of significant hyperbilirubinemia (AUC-0.880, p=0.001). At this cut-off PPV was 63% and NPV 97%. Total serum bilirubin level on first day of life predicts neonates at risk of subsequent significant hyperbilirubinemia and late preterm and term babies with TSB level of ≥5.65mg/dl on day 1 of life should be followed up strictly either in the hospital or in the outpatient department on day 5.
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Affiliation(s)
- K A Khan
- Dr Md Kamrul Ahsan Khan, Assistant Professor (Neonatology), Department of Pediatrics, Sheikh Sayera Khatun Medical College, Gopalgonj, Bangladesh
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Nahar N, Mannan MA, Dey AC, Ahmed F, Khan KA, Jahan I, Dey SK, Shahidullah M. Comparison of Serum Bilirubin with Transcutaneous Bilirubinometry in Late Preterm and Term Newborn. Mymensingh Med J 2017; 26:621-627. [PMID: 28919619] [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: 06/07/2023]
Abstract
Neonatal jaundice or hyperbilirubinemia is a common occurrence in newborns. It can progress to develop kernicterus unless intervention is initiated. Severity and decision for management are usually based on serum bilirubin which needs blood sampling. Transcutaneous bilirubin measurement is a noninvasive technique and correlates closely with serum bilirubin. This Cross sectional study was done in the Department of Neonatology, Bangabandhu Sheikh Mujib Medical University from March 2013 to August 2014 to evaluate the transcutaneous bilirubin in comparison to serum bilirubin. Total 160 infants with ≥35 weeks were purposively included over a period of 16 months. Neonates with less than 35 weeks, previously exposed to phototherapy, serious illness which leads to impaired circulation, who have had exchange transfusion, having major congenital malformation were excluded. Transcutaneous bilirubin measurement was performed within 30 minutes of obtaining sample for total serum bilirubin measurements. Of the enrolled infants, mean birth weight was 2631±520 grams, postnatal age was 4.99±3.02 days ranging from 2 to 25 days and mean transcutaneous bilirubin and serum bilirubin value was 14.59±2.55 and 13.62±2.86mg/dl respectively. Mean difference of transcutaneous bilirubin and serum bilirubin was 0.97±1.01mg/dl. In the total enrolled infant, transcutaneous bilirubin and serum bilirubin values showed significant correlation (r = 0.93, r2 = 0.876, p<0.001) and this was not affected by sex, gestational age, postnatal age, and birth weight. The area under ROC curve for transcutaneous bilirubin was 87% (p value <0.001). If the cut off value of transcutaneous bilirubin was set at 15 mg/dl, then a sensitivity of 77%, specificity of 88% and accuracy of 82% were obtained. Use of transcutaneous bilirubin can reduce need for serum bilirubin in assaying neonatal jaundice; as it showed significantly high correlation with serum bilirubin. Predictive accuracy of transcutaneous bilirubin was found to be statistically significant in comparison to serum bilirubin.
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Affiliation(s)
- N Nahar
- Dr Nazmun Nahar, Resident, Department of Neonatology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh
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Bhaumik P, Ghosh P, Ghosh S, Feingold E, Ozbek U, Sarkar B, Dey SK. Combined association of Presenilin-1 and Apolipoprotein E polymorphisms with maternal meiosis II error in Down syndrome births. Genet Mol Biol 2017; 40:577-585. [PMID: 28767121 PMCID: PMC5596362 DOI: 10.1590/1678-4685-gmb-2016-0138] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 02/27/2017] [Indexed: 11/22/2022] Open
Abstract
Alzheimer's disease and Down syndrome often exhibit close association and predictively share common genetic risk-factors. Presenilin-1 (PSEN-1) and Apolipoprotein E (APOE) genes are associated with early and late onset of Alzheimer's disease, respectively. Presenilin -1 is involved in faithful chromosomal segregation. A higher frequency of the APOE ε4 allele has been reported among young mothers giving birth to Down syndrome children. In this study, 170 Down syndrome patients, grouped according to maternal meiotic stage of nondisjunction and maternal age at conception, and their parents were genotyped for PSEN-1 intron-8 and APOE polymorphisms. The control group consisted of 186 mothers of karyotypically normal children. The frequencies of the PSEN-1 T allele and TT genotype, in the presence of the APOE ε4 allele, were significantly higher among young mothers (< 35 years) with meiosis II nondisjunction than in young control mothers (96.43% vs. 65.91% P = 0.0002 and 92.86% vs. 45.45% P < 0.0001 respectively) but not among mothers with meiosis I nondisjunction. We infer that the co-occurrence of the PSEN-1 T allele and the APOE ε4 allele associatively increases the risk of meiotic segregation error II among young women.
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Affiliation(s)
- Pranami Bhaumik
- Department of Biotechnology, School of Biotechnology and Biological
Sciences. Maulana Abul Kalam Azad University of Technology, West Bengal, India
| | - Priyanka Ghosh
- Department of Biotechnology, School of Biotechnology and Biological
Sciences. Maulana Abul Kalam Azad University of Technology, West Bengal, India
| | - Sujay Ghosh
- Department of Zoology, University of Calcutta, Ballygunge Science
college campus, Kolkata, West Bengal, India
| | - Eleanor Feingold
- Department of Human Genetics, Graduate School of Public Health,
University of Pittsburgh, PA, USA
- Department of Biostatistics, Graduate School of Public Health,
University of Pittsburgh, Pittsburgh, PA, USA
| | - Umut Ozbek
- Department of Biostatistics, Graduate School of Public Health,
University of Pittsburgh, Pittsburgh, PA, USA
| | | | - Subrata Kumar Dey
- Department of Biotechnology, School of Biotechnology and Biological
Sciences. Maulana Abul Kalam Azad University of Technology, West Bengal, India
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Majumder P, Singh SJ, Nair V, Bhaumik P, Mukherjee A, Ghosh P, Bhattacharya M, Ghosh S, Dey SK. Alliance of matrix metalloproteinase-9 (MMP-9) promoter gene polymorphism with chronic and aggressive periodontitis in Indian population. Meta Gene 2017. [DOI: 10.1016/j.mgene.2017.02.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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Ahmed F, Mannan MA, Dey AC, Nahar N, Hasan Z, Jahan I, Dey SK, Shahidullah M. Randomized Controlled Trial of Slow Versus Rapid Enteral Feeding Advancements on the Clinical Outcomes in Very Low Birth Weight Neonates. Mymensingh Med J 2017; 26:318-326. [PMID: 28588168] [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: 06/07/2023]
Abstract
Starting and advancement of feeding in very low birth weight (VLBW) infants are big challenges for the neonatal practitioners. Wide variations in volume of feed advancement have observed in earlier trials both in slow and rapid advancement groups. Volume advancement in slow advancement groups have ranged from 10ml/kg/day to 23ml/kg/day and in rapid advancement groups have ranged from 15ml/kg/day to 45ml/kg/day in earlier different studies. This randomized controlled trial was conducted in neonatal intensive care unit (NICU) of Bangabandhu Sheikh Mujib Medical University (BSMMU) from April 2013 to July 2014 to evaluate the effects of slow versus rapid rates of feeding advancements on the clinical outcomes in very low birth weight infants. A total 95 infants were enrolled into two strata according to their birth weight. Infants of each stratum were randomly allocated to either slow or rapid advancement group during initiation of feeding. After gut priming over five days, feeding was advanced daily 10ml/kg in slow and 15ml/kg in rapid advancement group for 1000 - <1250gm weighing infants. For 1250 - <1500gm weighing infants, feeding was advanced daily 15ml/kg in slow and 20ml/kg in rapid advancement group. The primary outcome variable was time taken to achieve full enteral feed. Total 82 infants completed the trial. Demographically both groups were same. Infants in the rapid feeding advancement group achieved full enteral feedings before the slow advancement group, had significantly fewer days of parenteral nutrition and regained birth weight earlier. There were no statistical differences in episodes of feed interruption, number of infants with apnea, feed intolerance or diagnosis of sepsis. Rapid enteral feeding advancements were well tolerated by very low birth weight infants.
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Affiliation(s)
- F Ahmed
- Dr Firoz Ahmed, Resident Physician, Department of Pediatrics, Sher-e-Bangla Medical College Hospital, Barisal, Bangladesh
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Shabuj KH, Hossain J, Moni SC, Dey SK. C-reactive Protein (CRP) as a Single Biomarker for Diagnosis of Neonatal Sepsis: A Comprehensive Meta-analysis. Mymensingh Med J 2017; 26:364-371. [PMID: 28588174] [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: 06/07/2023]
Abstract
Neonatal sepsis (NS) is a life-threatening disorder and an important cause of morbidity and mortality in neonates. Blood culture, the gold standard for diagnosis of neonatal sepsis is costly, not available at all centres and test result not readily available. CRP is low cost diagnostic test for neonatal sepsis which is possible to perform at all centres and test result is easily available. We aimed to evaluate the usefulness of C-reactive protein (CRP) measurement to identify neonatal sepsis. We conducted this meta-analysis to investigate the diagnostic accuracy of the CRP in neonatal sepsis. The literature was searched in PUBMED, Cochrane Library, Google scholar and other Medical Databases using set search criteria. Each included study was evaluated by quality assessment of diagnostic accuracy studies (QUADAS) tool. Four investigators independently extracted the data and study characteristics, and disagreements, if any, were resolved by consensus. Meta-disc software was used to calculate the pooled sensitivity, specificity and summary diagnostic odds ratio (SDOR), I² or Cochrane Q to test heterogeneity. False positive report probability (FPRP) was calculated to confirm the significance of the results. Eleven studies (1557 neonates) were included in this meta-analysis. The pooled sensitivity and specificity of CRP were 71% and 86% respectively, which had moderate accuracy in the diagnosis of NS. The pooled diagnostic odds ratio (DOR) and area under curve (AUC) was 19.10 and 0.8535 (Q*=0.7845), respectively. The diagnostic threshold analysis showed that there was no threshold effect. Meta-analysis showed that CRP had a moderate accuracy (AUC=0.8535) for the diagnosis of NS. CRP is a helpful biomarker for diagnosis of NS. However, we should combine the results with clinical symptoms and signs, laboratory and microbial results.
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Affiliation(s)
- K H Shabuj
- Dr Kamrul Hassan Shabuj, Assistant Professor, Department of Neonatology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
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Bhaumik P, Bhattacharya M, Ghosh P, Ghosh S, Kumar Dey S. Telomere length analysis in Down syndrome birth. Mech Ageing Dev 2017; 164:20-26. [PMID: 28327364 DOI: 10.1016/j.mad.2017.03.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 09/09/2016] [Revised: 02/27/2017] [Accepted: 03/14/2017] [Indexed: 11/19/2022]
Abstract
Human reproductive fitness depends upon telomere chemistry. Maternal age, meiotic nondisjunction error and telomere length of mother of trisomic child are someway associated. Reports exhibiting maternal inheritance of telomere length in Down syndrome child are very scanty. To investigate this, we collected peripheral blood from 170 mothers of Down syndrome child and 186 age matched mothers of euploid child with their newly born babies. Telomere length was measured by restriction digestion - southern blotting technique. Meiotic nondisjunction error was detected by STR genotyping. Subjects are classified by age (old >35 years and young ˂35 years) and by meiotic error (MI and MII). Linear regression was run to explore the age - telomere length relationship in each maternal groups. The study reveals that with age, telomere erodes in length. Old MII mothers carry the shortest (p˂0.001), control mothers have the longest telomere and MI lies in between. Babies from older mother have longer telomere (p˂0.001) moreover; telomeres are longer in Down syndrome babies than control babies (p˂0.001). To conclude, this study represents not only the relation between maternal aging and telomere length but also explore the maternal heritability of telomere length in families with Down syndrome child.
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Affiliation(s)
- Pranami Bhaumik
- Department of Biotechnology, School of Biotechnology and Biological Sciences. Maulana Abul Kalam Azad University of Technology, West Bengal (Formerly known as West Bengal University of Technology) BF-142, Salt Lake City, Sector I, Kolkata, West Bengal, 700064, India
| | - Mandar Bhattacharya
- Department of Biotechnology, School of Biotechnology and Biological Sciences. Maulana Abul Kalam Azad University of Technology, West Bengal (Formerly known as West Bengal University of Technology) BF-142, Salt Lake City, Sector I, Kolkata, West Bengal, 700064, India
| | - Priyanka Ghosh
- Department of Biotechnology, School of Biotechnology and Biological Sciences. Maulana Abul Kalam Azad University of Technology, West Bengal (Formerly known as West Bengal University of Technology) BF-142, Salt Lake City, Sector I, Kolkata, West Bengal, 700064, India
| | - Sujay Ghosh
- Cytogenetics and Genomics Research Unit, Department of Zoology, University of Calcutta,(Ballygunge Science college campus), 35 Ballygunge Circular Road., Kolkata, West Bengal, 700019, India
| | - Subrata Kumar Dey
- Department of Biotechnology, School of Biotechnology and Biological Sciences. Maulana Abul Kalam Azad University of Technology, West Bengal (Formerly known as West Bengal University of Technology) BF-142, Salt Lake City, Sector I, Kolkata, West Bengal, 700064, India.
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Hazra M, Dolai T, Giri S, Patra A, Dey SK. Synthesis of biologically active cadmium (II) complex with tridentate N2O donor Schiff base: DFT study, binding mechanism of serum albumins (bovine, human) and fluorescent nanowires. Journal of Saudi Chemical Society 2017. [DOI: 10.1016/j.jscs.2014.10.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Dey SK, Sharker S, Jahan I, Moni SC, Shabuj KH, Chisti MJ, Mannan MA, Shahidullah M. Neonatal Transport - Experience of a Tertiary Care Hospital of Bangladesh. Mymensingh Med J 2017; 26:169-174. [PMID: 28260772] [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: 06/06/2023]
Abstract
Safe transportation is mostly an unnoticed neonatal health issue in Bangladesh and no documentation is available regarding the existing practices. So this study was intended to document transport status of the referred newborn to a tertiary care hospital. This observational study included 150 out born neonates over 12 months period transported from various places to NICU, Bangabandhu Sheikh Mujib Medical University (BSMMU) from May 2015 to April 2016. A structured data collection form was used to record information categorized into pre-transport, during transport and at admission. At admission detailed clinical assessment of the baby was done and recorded. Outcome was determined as discharge or death. Of 150 transported neonates, two-third were preterm 115(77%) & LBW 113(75%). Common indications for referral were prematurity and sepsis. Most of the patients were referred from private hospital 107(71%). Majority of newborns (86%) were referred from hospitals of Dhaka city while only 14% were referred from outside Dhaka. Referral notes were supplied in most of the cases 134(89%) but comprehensive information was obtainable only in 3 cases. Although main transport vehicle was ambulance 130(87%), medical personnel accompanied the sick baby only in 6(4%) of cases. The distance traveled was less than 10 kilometers (kms) in 95(63%) and more than 100 km in 10(7%) of enrolled neonates. Transport time was less than 1 hour in 72(48%), 1-6 hours in 66(44%) and more than 6 hours in 12(8%) of cases. Nearly two third of newborn were transported after office period, 107(72%). At admission 21(14%) babies had hypothermia, 8(7.62%) hypoglycemia, 16(11%), poor perfusion 28(19%), low saturation 27(18%). Hyperthermia & hyperglycemia were observed in 8(5%) & 7(5%) cases respectively. Of the total 150 babies referred, 17(11%) died. While comparing with discharged newborn, died newborn were more frequent sufferer of hypothermia (p value 0.007) and low saturation (p value 0.049) at admission. Premature, low birth weight and sick newborns are being transported despite lack of safe transport system.
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Affiliation(s)
- S K Dey
- Dr Sanjoy Kumer Dey, Associate Professor, Department of Neonatology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
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Hazra M, Dolai T, Pandey A, Dey SK, Patra A. Fluorescent copper(II) complexes: The electron transfer mechanism, interaction with bovine serum albumin (BSA) and antibacterial activity. Journal of Saudi Chemical Society 2017. [DOI: 10.1016/j.jscs.2014.02.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Dey AC, Hossain MI, Afroze S, Dey SK, Mannan MA, Shahidullah M. A Survey on Current Practice of Management of Early Onset Neonatal Sepsis. Mymensingh Med J 2016; 25:243-247. [PMID: 27277355] [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: 06/06/2023]
Abstract
It was a survey type of cross sectional study where the participants were from different teaching/referral hospital across the country and was done to gather information regarding current practice of management of neonatal sepsis among paediatricians and neonatologists and was conducted on the spot during a national conference of Bangladesh Perinatal Society in December 2013. Specialists in neonatology, paediatrics, and some other disciplines working in different institutes across the country were requested to respond. Out of 150 physicians, 92 (61.33%) were neonatologists. Physicians suspected early onset neonatal sepsis (EONS) when there is history suggestive of prolonged rupture of membrane (74.77%), prolonged labour (9.33%), chorioamnionitis (7.33%) and maternal fever (2%). Clinical sepsis is found commonly (53.33%) which is later proved by laboratory evidences such as Hb%, TC, DC PBF (peripheral blood film), C-reactive protein, chest X-ray etc. Injection Ampicillin and Gentamycin are still the first choice of antibiotics (61.3%). Preferred route was intravenous (95.3%). Antibiotics were given for 7-10 days by most of the physicians (48.77%). However there is lack of uniformity among the participants in regard to taking decision about antibiotics, the choice of first line and the subsequent options of antibiotics. So, neonatal sepsis is the most important cause of neonatal mortality in the community. Therefore a standard protocolized approach for diagnosis and management of Early Onset Neonatal Sepsis may prove critical which is currently not in practice uniformly.
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Affiliation(s)
- A C Dey
- Dr Arjun Chandra Dey, Assistant Professor, Department of Neonatology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail: acd_70@yahoo. Com
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Dey AC, Hossain MI, Dey SK, Mannan MA, Shahidullah M. Neonatal Conjunctivitis Leading to Neonatal Sepsis--A Case Report. Mymensingh Med J 2016; 25:161-162. [PMID: 26931268] [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: 06/05/2023]
Abstract
Neonatal conjunctivitis is the most common occular disease in neonates. Most infections are acquired during vaginal delivery. In spite most of these cases are benign; some of them may progress to systemic complications like loss of vision if left untreated. The authors present a case of a newborn who developed late onset neonatal sepsis from E. coli positive conjunctivitis. The baby was treated with Injection Meropenem and Injection Amikacin for 10 days. The course was uneventful, after that baby responded well and discharged home on 24th day.
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Affiliation(s)
- A C Dey
- Dr Arjun Chandra Dey, Assistant Professor, Department of Neonatology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh
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Nahar N, Dey AC, Khan KA, Dey SK, Mannan MA, Shahidullah M. Salt Losing Variety of Congenital Adrenal Hyperplasia--A Case Report. Mymensingh Med J 2016; 25:179-181. [PMID: 26931272] [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: 06/05/2023]
Abstract
Congenital adrenal hyperplasia is a genetic endocrinologic disorder. The severe classic form occurs in one in 15,000 births worldwide. Twenty-one-hydroxylase deficiency (21-OHD) is the most common cause in this autosomal recessive disease. It can cause virilization, ambiguous genitalia at birth and severe life threatening condition due to salt wasting. In this report we describe the clinical course of a male neonate presenting with lethargy, failure to thrive (FTT), genital pigmentation, electrolytes imbalance and high serum 17-hydroxy-progesterone (17-OHP) level and subsequently diagnosed as Congenital Adrenal Hyperplasia. After the initial crises management, the child was continued on replacement therapy. During the follow up, he was found to grow appropriately and achieving normal milestones for age.
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Affiliation(s)
- N Nahar
- Dr Nazmun Nahar, Resident, Department of Neonatology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh
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Bakshi L, Begum HA, Khan I, Dey SK, Bhattacharjee M, Bakshi MK, Dey S, Habib A, Barman KK. Comparative Study of Clinical and Sonographic Estimation of Foetal Weight at Term. Mymensingh Med J 2015; 24:572-577. [PMID: 26329957] [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: 06/05/2023]
Abstract
A cross sectional comparative study was conducted at Dhaka National Medical College, Dhaka from January to June 2012, to observe the accuracy of clinical and ultrasonographic estimation of foetal weight at term in our environment. Seventy five pregnant women who fulfilled the inclusion criteria had their foetal weight estimated independently using clinical and ultrasonographic methods. Accuracy was determined by percentage error, absolute percentage error and proportion of estimates within 10% of actual birth weight (birth weight fetus of +10%). Statistical analysis was done using the paired t-test, the Wilcoxon signed-rank test, and the chi-square test. The study sample had an actual average birth weight of 2989.60 ± 408.76 (range 2310-4000 gm). Overall, the clinical method overestimated birth-weight, while ultrasound underestimated it. The mean absolute percentage error of the clinical method was more than that of the sonographic method, and the number of estimates within 10% of actual birth weight for the clinical method (41.3%) was less than for the sonographic method (57.3%); the difference was not statistically significant. In the low birth-weight (<2,500 gm) group, the mean absolute percentage error of sonographic estimates were significantly smaller. Significantly more sonographic estimates (75%) were within 10% of actual birth-weight than those of the clinical method (0%). No statistically significant difference was observed in all the measures of accuracy for the normal birth-weight range of 2,500-<4,000 gm and in the macrosomic group (≥ 4,000 gm). Clinical estimation of birth-weight is as accurate as routine ultrasonographic estimation, except in low-birth-weight babies.
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Affiliation(s)
- L Bakshi
- Dr Lipy Bakshi, Registrar, Department of Gynae & Obs, Dhaka National Medical College, Dhaka, Bangladesh
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Habib MA, Dey SK, Alam MR, Bhuiyan M, Bhuiyan SI, Khatun MH, Rizvi AN, Haque A. Is malnutrition a risk factor of stroke? Mymensingh Med J 2015; 24:373-378. [PMID: 26007268] [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: 06/04/2023]
Abstract
Obesity is an established risk factor of stroke. Malnutrition in post-stroke period is common and can influence outcome. But malnutrition, though predicted, has not yet been established as a risk factor of stroke. This descriptive study was carried out in the Department of Neurology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka and Department of Neurology, Dhaka Medical College (DMC), from January 2009 to December 2010 to explore whether malnutrition is an independent risk factor of stroke. Nutritional status of 100 stroke patients and 100 healthy controls were assessed in this study. Anthropometric measurements including Body Mass Index (BMI), Triceps skin fold (TSF), Mid-arm circumference (MAC) and Arm-muscle circumference (AMC) were measured within 7 days of stroke. Haemoglobin and haematocrit percentage, serum iron and serum albumin were measured at the same time. No significant difference was observed regarding TSF thickness, MAC, AMC, mean Hb and mean albumin level between the stroke patients and the control group, although iron level was significantly lower in stroke group. Multiple logistic regressions analysis showed that increase in age, smoking and decreased serum iron level has a positive association with stroke. Malnutrition is, according to this study, not a significant risk factor of stroke and triceps skin fold (TSF) thickness, mid-arm circumference (MAC), arm-muscle circumference (AMC), hemoglobin and serum albumin are not appropriate predictor of stroke.
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Affiliation(s)
- M A Habib
- Dr Md Ahsan Habib, Assistant Professor, Department of Neurology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh
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Biswas TK, Chakrabarti S, Pandit S, Jana U, Dey SK. Pilot study evaluating the use of Emblica officinalis standardized fruit extract in cardio-respiratory improvement and antioxidant status of volunteers with smoking history. J Herb Med 2014. [DOI: 10.1016/j.hermed.2014.09.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Ghosh D, Dey SK, Saha C. Antagonistic effects of black tea against gamma radiation-induced oxidative damage to normal lymphocytes in comparison with cancerous K562 cells. Radiat Environ Biophys 2014; 53:695-704. [PMID: 24981250 DOI: 10.1007/s00411-014-0551-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Accepted: 06/05/2014] [Indexed: 06/03/2023]
Abstract
The potential of naturally occurring antioxidants to reduce the cellular oxidative damage induced by ionizing radiation has been studied for more than a decade for their pharmacological application during cancer treatment. It is already known that radioprotective efficacy of phytochemicals might influence various end points of radiation damage. Flavonoids are well-known natural radioprotectors, and their biological effects depend upon their chemical structure. In the present study, radioprotective effect of black tea rich in flavonoids was evaluated against gamma radiation-induced oxidative damage on normal lymphocytes and compared with erythroleukemic K562 cells. Pre-treatment with black tea extract (BTE) significantly reduced radiation-induced loss of cell viability, generation of reactive oxygen species, mitochondrial dysfunction, activation of caspase-3 and apoptosis in normal lymphocytes compared to K562 cells. BTE also regulates the activity of endogenous antioxidant enzymes. The changes in the mRNA expression of bax, bcl2, p53 and Nrf2 were also followed to evaluate regulation of radiation-induced apoptosis by BTE. These findings suggest that black tea may have the potential of a natural radioprotective agent which can be used as adjunct with radiation during cancer treatment.
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Affiliation(s)
- Debjani Ghosh
- School of Biotechnology and Biological Sciences, West Bengal University of Technology, BF-142, Sector I, Salt Lake, Kolkata, 700064, India
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Hazra M, Dolai T, Pandey A, Dey SK, Patra A. Synthesis and Characterisation of Copper(II) Complexes with Tridentate NNO Functionalized Ligand: Density Function Theory Study, DNA Binding Mechanism, Optical Properties, and Biological Application. Bioinorg Chem Appl 2014; 2014:104046. [PMID: 25386109 PMCID: PMC4214117 DOI: 10.1155/2014/104046] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [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: 05/29/2014] [Revised: 08/02/2014] [Accepted: 08/14/2014] [Indexed: 11/17/2022] Open
Abstract
The photo physical properties of two mononuclear pentacoordinated copper(II) complexes formulated as [Cu(L)(Cl)(H2O)] (1) and [Cu(L)(Br)(H2O)] (2) HL = (1-[(3-methyl-pyridine-2-ylimino)-methyl]-naphthalen-2-ol) were synthesized and characterized by elemental, physicochemical, and spectroscopic methods. The density function theory calculations are used to investigate the electronic structures and the electronic properties of ligand and complex. The interactions of copper(II) complexes towards calf thymus DNA were examined with the help of absorption, viscosity, and fluorescence spectroscopic techniques at pH 7.40. All spectroscopy's result indicates that complexes show good binding activity to calf thymus DNA through groove binding. The optical absorption and fluorescence emission properties of microwires were characterized by fluorescence microscope. From a spectroscopic viewpoint, all compounds strongly emit green light in the solid state. The microscopy investigation suggested that microwires exhibited optical waveguide behaviour which are applicable as fluorescent nanomaterials and can be used as building blocks for miniaturized photonic devices. Antibacterial study reveals that complexes are better antimicrobial agents than free Schiff base due to bacterial cell penetration by chelation. Moreover, the antioxidant study of the ligand and complexes is evaluated by using 1,1-diphenyl-2-picrylhydrazyl (DPPH) free-radical assays, which demonstrate that the complexes are of higher antioxidant activity than free ligand.
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Affiliation(s)
- Madhumita Hazra
- Postgraduate Department of Chemistry, Midnapore College, Midnapore 721101, India
- Department of Chemistry, Sidho-Kanho-Birsha University, Purulia, West Bengal 723101, India
| | - Tanushree Dolai
- Postgraduate Department of Chemistry, Midnapore College, Midnapore 721101, India
| | - Akhil Pandey
- Department of Microbiology, Midnapore College, Midnapore 721101, India
| | - Subrata Kumar Dey
- Department of Chemistry, Sidho-Kanho-Birsha University, Purulia, West Bengal 723101, India
| | - Animesh Patra
- Postgraduate Department of Chemistry, Midnapore College, Midnapore 721101, India
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Abstract
Tea flavonoids bind to variety of enzymes and inhibit their activities. In the present study, binding and inhibition of catalase activity by catechins with respect to their structure-affinity relationship has been elucidated. Fluorimetrically determined binding constants for (-)-epigallocatechin gallate (EGCG) and (-)-epicatechin gallate (ECG) with catalase were observed to be 2.27×106 M(-1) and 1.66×106 M(-1), respectively. Thermodynamic parameters evidence exothermic and spontaneous interaction between catechins and catalase. Major forces of interaction are suggested to be through hydrogen bonding along with electrostatic contributions and conformational changes. Distinct loss of α-helical structure of catalase by interaction with EGCG was captured in circular dichroism (CD) spectra. Gallated catechins demonstrated higher binding constants and inhibition efficacy than non-gallated catechins. EGCG exhibited maximum inhibition of pure catalase. It also inhibited cellular catalase in K562 cancer cells with significant increase in cellular ROS and suppression of cell viability (IC50 54.5 µM). These results decipher the molecular mechanism by which tea catechins interact with catalase and highlight the potential of gallated catechin like EGCG as an anticancer drug. EGCG may have other non-specific targets in the cell, but its anticancer property is mainly defined by ROS accumulation due to catalase inhibition.
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Affiliation(s)
- Sandip Pal
- Department of Biotechnology, West Bengal University of Technology, Kolkata, West Bengal, India
| | - Subrata Kumar Dey
- Department of Biotechnology, West Bengal University of Technology, Kolkata, West Bengal, India
| | - Chabita Saha
- Department of Biotechnology, West Bengal University of Technology, Kolkata, West Bengal, India
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Abstract
The single pyrazine-bridged polymeric complex {[Ni(pyz)(H2O)4](NO3)2.2H2O}n has been synthesised and characterised by elemental analyses, IR and UV-vis spectra, and a single-crystal X-ray diffraction study. The coordination around the Ni centre is perfectly octahedral. The Ni(H2O)4 coordination planes are bridged by pyrazine ligands forming an infinite chain structure. Two nitrate anions and two water molecules exist in the lattice and are linked by intermolecular hydrogen bonds to the coordinated water molecules.
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Affiliation(s)
| | - Subrata Kumar Dey
- Department of Chemistry, Jadavpur University, Calcutta - 700 032, India
| | - Sutapa Sen
- Department of Chemistry, Jadavpur University, Calcutta - 700 032, India
| | - Bappaditya Bag
- Department of Chemistry, Jadavpur University, Calcutta - 700 032, India
| | - Samiran Mitra
- Department of Chemistry, Jadavpur University, Calcutta - 700 032, India
| | - Volker Gramlich
- Laboratorium für Kristallographie ETH, Eidgenössische Technische Hochschule Zürich, CH-8092 Zürich, Switzerland
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Mannan MA, Choudhury SM, Dey AC, Dey SK, Naher BS, Shahidullah M. Newborn hearing screening: what are we missing? Bangladesh Med Res Counc Bull 2014; 40:1-5. [PMID: 26118164 DOI: 10.3329/bmrcb.v40i1.20319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The objectives of the study were to demonstrate hearing status in newborns at first screening by Transient Evoked Otoacoustic Emissions and to find out the relationship between abnormal hearing screening and known risk factors. This study was conducted in the department of neonatology of Bangabandhu Sheikh Mujib Medical University in collaboration with department of otolaryngology and department of obstetrics and gynaecology. This prospective observational study included a cohort of 168 neonates from Neonatal Intensive Care Unit and neonatal Nursery (Minimal care unit). All were screened for hearing impairment using Transient Evoked Otoacoustic Emissions in out-patient department of otolaryngology by a trained audiologist before discharge from hospital. Risk factors analysed were according to the criteria of American Academy of Pediatrics. Of the total neonates screened, Refer rate was 32.7% irrespective of presence or absence of risk factors. Small for gestational age, in-utero infections, ototoxic medications, birth weight < 1500, sepsis/meningitis, hyperbilirubinemia were found to be significant risk factors (p < 0.0001). It can be recommended that hearing screening should be universally done for all newborns.
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