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Hanif MA, Hossen S, Choi CY, Kho KH. Cloning, characterization, and spatio-temporal expression patterns of HdhSPARC and its responses to multiple stressors. Sci Rep 2024; 14:2224. [PMID: 38278828 PMCID: PMC10817941 DOI: 10.1038/s41598-024-51950-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 01/11/2024] [Indexed: 01/28/2024] Open
Abstract
SPARC is an extracellular Ca2+-binding, secreted glycoprotein that plays a dynamic role in the growth and development of organisms. This study aimed to describe the isolation, characterization, and expression analysis of HdhSPARC in Pacific abalone (Haliotis discus hannai) to infer its potential functional role. The isolated HdhSPARC was 1633 bp long, encoding a polypeptide of 284 amino acid residues. Structurally, the SPARC protein in abalone is comprised of three biological domains. However, the structure of this protein varied between vertebrates and invertebrates, as suggested by their distinct clustering patterns in phylogenetic analysis. In early development, HdhSPARC was variably expressed, and higher expression was found in veliger larvae. Moreover, HdhSPARC was highly expressed in juvenile abalone with rapid growth compared to their slower-growing counterparts. Among the testicular development stages, the growth stage exhibited higher HdhSPARC expression. HdhSPARC was also upregulated during muscle remodeling and shell biomineralization, as well as in response to different stressors such as heat shock, LPS, and H2O2 exposure. However, this gene was downregulated in Cd-exposed abalone. The present study first comprehensively characterized the HdhSPARC gene, and its spatio-temporal expressions were analyzed along with its responses to various stressors.
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Affiliation(s)
- Md Abu Hanif
- Department of Fisheries Science, Chonnam National University, Yeosu, 59626, South Korea
| | - Shaharior Hossen
- Department of Fisheries Science, Chonnam National University, Yeosu, 59626, South Korea
| | - Cheol Young Choi
- Division of Marine BioScience, National Korea Maritime and Ocean University, Busan, 49112, South Korea
| | - Kang Hee Kho
- Department of Fisheries Science, Chonnam National University, Yeosu, 59626, South Korea.
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Hanif MA, Hossen S, Cho DH, Kho KH. The Neuropeptide HGAP Regulates Growth, Reproduction, Metamorphosis, Tissue Damage Repair, and Response against Starvation in Pacific Abalone. Neuroendocrinology 2023; 114:453-467. [PMID: 38142675 DOI: 10.1159/000535945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 12/18/2023] [Indexed: 12/26/2023]
Abstract
INTRODUCTION Neuropeptides regulate vital physiological processes in multicellular organisms, including growth, reproduction, metamorphosis, and feeding. Recent transcriptome analyses have revealed neuropeptide genes with potential roles in vertebrate and invertebrate growth and reproduction. Among these genes, haliotid growth-associated peptide (HGAP) was identified as a novel gene in abalone. METHODS This study focused on HGAP in Pacific abalone (Haliotis discus hannai), where the complete cDNA sequence named Hdh-HGAP was identified and characterized. Samples from different experiments, such as metamorphosis, juvenile abalone growth, gonad development stages, muscle remodeling, and starvation, were collected for mRNA expression analysis. RESULTS The sequence spans 552 bp, encoding 96 amino acids with a molecular weight of 10.96 kDa. Expression analysis revealed that Hdh-HGAP exhibited higher levels in muscle tissue. Notably, during metamorphosis, Hdh-HGAP exhibited greater expression in the trochophore, veliger, and juvenile stages than in the cell division stages. Regarding growth patterns, Hdh-HGAP was highly expressed during rapid growth compared to stunted, minimal, and normal growth. In gonadal development, Hdh-HGAP mRNA reached its highest expression level during the ripening stage, indicating a potential role in gonadal cell proliferation and maturation. The in vivo effects of GnRH on gonad development and the expression of the Hdh-HGAP neuropeptide indicate its involvement in regulating reproduction in Pacific abalone. While tissue remodeling is primarily governed by immune genes, Hdh-HGAP was also upregulated during muscle tissue remodeling. Conversely, Hdh-HGAP was downregulated during prolonged starvation. CONCLUSION This study marks the first comprehensive exploration of the Hdh-HGAP neuropeptide gene in Pacific abalone, shedding light on its involvement in growth, reproduction, metamorphosis, tissue remodeling, and response to starvation, although regulatory mechanisms are mostly unknown.
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Affiliation(s)
- Md Abu Hanif
- Department of Fisheries Science, Chonnam National University, Yeosu, Republic of Korea
| | - Shaharior Hossen
- Department of Fisheries Science, Chonnam National University, Yeosu, Republic of Korea
| | - Doo Hyun Cho
- Department of Fisheries Science, Chonnam National University, Yeosu, Republic of Korea
| | - Kang Hee Kho
- Department of Fisheries Science, Chonnam National University, Yeosu, Republic of Korea
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Hanif MA, Han JD, Kim SC, Hossen S, Kho KH. EF-Hand-Binding Secreted Protein Hdh-SMP5 Regulates Shell Biomineralization and Responses to Stress in Pacific Abalone, Haliotis discus hannai. Curr Issues Mol Biol 2023; 45:10079-10096. [PMID: 38132475 PMCID: PMC10741955 DOI: 10.3390/cimb45120629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/05/2023] [Accepted: 12/12/2023] [Indexed: 12/23/2023] Open
Abstract
The development of a shell is a complex calcium metabolic process involving shell matrix proteins (SMPs). In this study, we describe the isolation, characterization, and expression of SMP5 and investigate its potential regulatory role in the shell biomineralization of Pacific abalone Haliotis discus hannai. The full-length Hdh-SMP5 cDNA contains 685 bp and encodes a polypeptide of 134 amino acids. Structurally, the Hdh-SMP5 protein belongs to the EF-hand-binding superfamily, which possesses three EF-hand Ca2+-binding regions and is rich in aspartic acid. The distinct clustering patterns in the phylogenetic tree indicate that the amino acid composition and structure of this protein may vary among different SMPs. During early development, significantly higher expression was observed in the trochophore and veliger stages. Hdh-SMP5 was also upregulated during shell biomineralization in Pacific abalone. Long periods of starvation cause Hdh-SMP5 expression to decrease. Furthermore, Hdh-SMP5 expression was observed to be significantly higher under thermal stress at temperatures of 15, 30, and 25 °C for durations of 6 h, 12 h, and 48 h, respectively. Our study is the first to characterize Hdh-SMP5 comprehensively and analyze its expression to elucidate its dynamic roles in ontogenetic development, shell biomineralization, and the response to starvation and thermal stress.
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Affiliation(s)
- Md Abu Hanif
- Department of Fisheries Science, Chonnam National University, Yeosu 59626, Republic of Korea; (M.A.H.); (S.H.)
| | - Ji Do Han
- South Sea Fisheries Research Institute, National Institute of Fisheries Science, Yeosu 59780, Republic of Korea; (J.D.H.); (S.C.K.)
| | - Soo Cheol Kim
- South Sea Fisheries Research Institute, National Institute of Fisheries Science, Yeosu 59780, Republic of Korea; (J.D.H.); (S.C.K.)
| | - Shaharior Hossen
- Department of Fisheries Science, Chonnam National University, Yeosu 59626, Republic of Korea; (M.A.H.); (S.H.)
| | - Kang Hee Kho
- Department of Fisheries Science, Chonnam National University, Yeosu 59626, Republic of Korea; (M.A.H.); (S.H.)
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Hossen S, Hanif MA, Kho KH. Glutathione reductase, a biomarker of pollutant and stress in Pacific abalone. Mar Pollut Bull 2023; 192:115139. [PMID: 37301005 DOI: 10.1016/j.marpolbul.2023.115139] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/30/2023] [Accepted: 06/01/2023] [Indexed: 06/12/2023]
Abstract
Abalone are frequently exposed to several environmental factors including heavy metal toxicity, thermal stress, H2O2-stress, starvation, viral and bacterial infection that can induce oxidative stress. Glutathione reductase is a vital enzyme in the antioxidant defense system that catalyzes the reduction of oxidized glutathione to reduced glutathione. The present study aimed to identify and localize glutathione reductase in Pacific abalone (Hdh-GR) and assess its potential role in stress physiology, heavy metal toxicity, immune response, gonadal development, and metamorphosis. The mRNA expression of Hdh-GR was upregulated in response to thermal stress, starvation, H2O2-stress, and cadmium-exposed toxicity. The induced mRNA expression was also quantified in immune-challenged abalone. Moreover, the Hdh-GR expression was significantly higher during metamorphosis. The Hdh-GR mRNA expression showed an inverse relationship with ROS production in heat stressed Pacific abalone. These results suggest that Hdh-GR has central role in the stress physiology, immune response, gonadal development, and metamorphosis of Pacific abalone.
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Affiliation(s)
- Shaharior Hossen
- Department of Fisheries Science, Chonnam National University, Yeosu, South Korea
| | - Md Abu Hanif
- Department of Fisheries Science, Chonnam National University, Yeosu, South Korea
| | - Kang Hee Kho
- Department of Fisheries Science, Chonnam National University, Yeosu, South Korea.
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Chaklader MR, Howieson J, Foysal MJ, Hanif MA, Abdel-Latif HM, Fotedar R. Fish waste to sustainable additives: Fish protein hydrolysates alleviate intestinal dysbiosis and muscle atrophy induced by poultry by-product meal in Lates calcarifer juvenile. Front Nutr 2023; 10:1145068. [PMID: 37057066 PMCID: PMC10086250 DOI: 10.3389/fnut.2023.1145068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 03/02/2023] [Indexed: 03/30/2023] Open
Abstract
Valorising waste from the processing of fishery and aquaculture products into functional additives, and subsequent use in aquafeed as supplements could be a novel approach to promoting sustainability in the aquaculture industry. The present study supplemented 10% of various fish protein hydrolysates (FPHs), obtained from the hydrolysis of kingfish (KH), carp (CH) and tuna (TH) waste, with 90% of poultry by-product meal (PBM) protein to replace fishmeal (FM) completely from the barramundi diet. At the end of the trial, intestinal mucosal barriers damage, quantified by villus area (VA), lamina propria area (LPA), LPA ratio, villus length (VL), villus width (VW), and neutral mucin (NM) in barramundi fed a PBM-based diet was repaired when PBM was supplemented with various FPHs (p < 0.05, 0.01, and 0.001). PBM-TH diet further improved these barrier functions in the intestine of fish (p < 0.05 and 0.001). Similarly, FPHs supplementation suppressed PBM-induced intestinal inflammation by controlling the expression of inflammatory cytokines (tnf-α and il-10; p < 0.05 and 0.001) and a mucin-relevant production gene (i-mucin c; p < 0.001). The 16S rRNA data showed that a PBM-based diet resulted in dysbiosis of intestinal bacteria, supported by a lower abundance of microbial diversity (p < 0.001) aligned with a prevalence of Photobacterium. PBM-FPHs restored intestine homeostasis by enhancing microbial diversity compared to those fed a PBM diet (p < 0.001). PBM-TH improved the diversity (p < 0.001) further by elevating the Firmicutes phylum and the Ruminococcus, Faecalibacterium, and Bacteroides genera. Muscle atrophy, evaluated by fiber density, hyperplasia and hypertrophy and associated genes (igf-1, myf5, and myog), occurred in barramundi fed PBM diet but was repaired after supplementation of FPHs with the PBM (p < 0.05, 0.01, and 0.001). Similarly, creatine kinase, calcium, phosphorous, and haptoglobin were impacted by PBM-based diet (p < 0.05) but were restored in barramundi fed FPHs supplemented diets (p < 0.05 and 0.01). Hence, using circular economy principles, functional FPHs could be recovered from the fish waste applied in aquafeed formulations and could prevent PBM-induced intestinal dysbiosis and muscular atrophy.GRAPHICAL ABSTRACT
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Affiliation(s)
- Md Reaz Chaklader
- School of Molecular and Life Sciences, Curtin University, Bentley, WA, Australia
- Department of Primary Industries and Regional Development, Fremantle, WA, Australia
- *Correspondence: Md Reaz Chaklader, ;
| | - Janet Howieson
- School of Molecular and Life Sciences, Curtin University, Bentley, WA, Australia
| | - Md Javed Foysal
- School of Molecular and Life Sciences, Curtin University, Bentley, WA, Australia
- Department of Genetic Engineering and Biotechnology, Shahjalal University of Science and Technology, Sylhet, Bangladesh
| | - Md Abu Hanif
- Department of Fisheries Science, Chonnam National University, Yeosu, Republic of Korea
| | - Hany M.R. Abdel-Latif
- Department of Poultry and Fish Diseases, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Ravi Fotedar
- School of Molecular and Life Sciences, Curtin University, Bentley, WA, Australia
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Sarker MZ, Rahim MZ, Patawary KU, Dutta UK, Chowdhury NK, Islam MA, Hanif MA. Functional and Speech Outcome of Unilaterally Cochlear Implanted Children after 1 year of Implantation in NIENT: A Retrospective Study. Mymensingh Med J 2023; 32:213-220. [PMID: 36594323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Hearing loss can be congenital or acquired. Most of the time congenital hearing loss means profound sensorineural hearing loss. The invention of cochlear implantation has already an established role in improving the hearing capability in congenital sensorineural hearing loss. To speak properly after cochlear implant, one needs to go for speech therapy or audio-verbal therapy. Speech therapy has become an integral part of the cochlear implantation program. In Bangladesh cochlear implantation (CI) programs started around 15 years ago, which was limited to Bangabandhu Sheikh Mujib Medical University (BSMMU) and Combined Military Hospital (CMH). Our government takes initiative to provide this service to poor and lower income people. National Institute of ENT (NIENT) was the first government hospital where CI started in 2018 and the project is now ongoing. After CI auditory, verbal therapy (AVT) was given at the same institute. No study has not been done to find out the outcome of AVT. NIENT has taken steps to find out the functional and speech outcome of cochlear implanted children considering the two standard criteria: CAP and SIR score. This retrospective study was done to find out the auditory verbal outcome of unilaterally CI children in different ages and conducted at department of Audiology, National Institute of ENT, Tejgaon, Dhaka, Bangladesh from January 2021 to June 2021. The children who underwent cochlear implants and took the auditory verbal therapy were included in this study. Though it is a retrospective study, a written informed consent has been taken from the patient's parents as the cases are minor in age. From the record review, CAP and SIR scores were recorded four times: before implantation 1 time, after cochlear implantation 3 times (At the end of 3, 6 and 12 months after starting of AVT of Cochlear implantees). From the study it has been observed that out of 50 implantees, 48.0% of children's age range was in between >3 to ≤5 years. Most of the implantees were from rural areas and also from lower income group. The study showed significant association with CAP and SIR score at the end of one year of AVT. No significant association was found in different age groups with scores of CAP and SIR. But the parent's education showed significant association with CAP score at the end one year of AVT. Though the age of the recipient is not significantly associated with the AVT outcome but maternal education plays an important role in improving CAP and SIR score. So, maternal education or understanding along with professional speech therapy is vital for better AVT outcome.
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Affiliation(s)
- M Z Sarker
- Professor Dr Md Zakaria Sarker, Professor, Department of Otology, National Institute of ENT, Dhaka, Bangladesh; E-mail:
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Saleh K, Varnava A, Shun-Shin MJ, Ali N, Mohal J, Chiew K, Hanif MA, Merzah AJ, Howard JP, Jurak P, Leinveber P, Kanagaratnam P, Francis DP, Whinnett ZI, Arnold A. Ultra-high-frequency ECG assessment of QRS fragmentation predicts sudden cardiac death risk in inherited arrhythmia syndromes. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Fragmentation of the QRS complex, as a surrogate for scar or functionally disrupted ventricular activation, has been postulated as a risk factor for malignant ventricular arrhythmias across a range of cardiac diagnoses including cardiomyopathies, channelopathies and myocardial infarction. Fragmentation is subtle on the conventionally filtered 12-lead ECG and can easily be missed or over-diagnosed. Isolation of high-frequency (HF) QRS components could overcome this to demonstrate easily identifiable fragmentation but this has previously been limited by technological constraints resulting in a limited range of measured frequencies (150–300Hz). Ultra-high-frequency ECG (UHF-ECG) is a novel technology that utilises amplification and signal-averaging techniques to reliably measure frequencies up to 1000Hz.
Purpose
We explored the use of UHF-ECG in arrhythmia risk stratification.
Methods
We recruited 60 participants to undergo UHF-ECG recordings, including 23 healthy volunteers and 37 patients with inherited arrhythmia syndromes: 25 hypertrophic cardiomyopathy (HCM), 5 Brugada syndrome, 4 arrhythmogenic cardiomyopathy, 3 idiopathic ventricular fibrillation, 2 long QT syndrome and 1 non-ischaemic dilated cardiomyopathy.
The arrhythmia risk status of patients with inherited disease was classified, by two independent researchers, into high or low risk based on their history of cardiac arrest, sustained ventricular arrhythmia, appropriate therapy, syncope and programmed ventricular stimulation result. A third researcher adjudicated disagreement. Two further researchers, blinded to aforementioned risk status, independently assessed the UHF-ECG recordings of all participants.
Results
40 patients were classified as low risk, and 20 as high. Healthy volunteer UHF-ECGs showed uniform ventricular activation with single HF peaks in each lead. High-risk patients' UHF-ECGs showed multiple HF peaks, representing QRS fragmentation. The maximum number of HF peaks in any lead was used to measure severity of fragmentation. Example UHF-ECGs are shown in Figure 1. Fragmentation severity (number of peaks) correlated with arrhythmia risk status (chi-square statistic = 8.95, p-value = 0.03) across all participants (Figure 2) and when comparing high to low risk patients with inherited disease.
UHF-ECG fragmentation could be observed even when the 12-lead ECG did not show any observable fragmentation. Among patients with inherited disease, patients with HCM showed the largest difference in UHF-ECG fragmentation between high and low risk. UHF-ECG fragmentation analysis showed excellent reproducibility with no difference in number of peaks identified between two independent assessors.
Conclusion
We demonstrate proof-of-concept that a novel ultra-high-frequency tool for measuring a broad range of high frequency QRS components can be used for sudden death risk stratification in patients with inherited cardiac conditions.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- K Saleh
- National Heart and Lung Institute Imperial College , London , United Kingdom
| | - A Varnava
- National Heart and Lung Institute Imperial College , London , United Kingdom
| | - M J Shun-Shin
- National Heart and Lung Institute Imperial College , London , United Kingdom
| | - N Ali
- National Heart and Lung Institute Imperial College , London , United Kingdom
| | - J Mohal
- National Heart and Lung Institute Imperial College , London , United Kingdom
| | - K Chiew
- National Heart and Lung Institute Imperial College , London , United Kingdom
| | - M A Hanif
- National Heart and Lung Institute Imperial College , London , United Kingdom
| | - A J Merzah
- National Heart and Lung Institute Imperial College , London , United Kingdom
| | - J P Howard
- National Heart and Lung Institute Imperial College , London , United Kingdom
| | - P Jurak
- Institute of Scientific Instruments of the Czech Academy of Sciences , Brno , Czechia
| | - P Leinveber
- International Clinical Research Center, St. Anne's University Hospital , Brno , Czechia
| | - P Kanagaratnam
- National Heart and Lung Institute Imperial College , London , United Kingdom
| | - D P Francis
- National Heart and Lung Institute Imperial College , London , United Kingdom
| | - Z I Whinnett
- National Heart and Lung Institute Imperial College , London , United Kingdom
| | - A Arnold
- National Heart and Lung Institute Imperial College , London , United Kingdom
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Hanif MA, Hossen S, Cho Y, Sukhan ZP, Choi CY, Kho KH. Characterization and Expression Analysis of Mollusk-like Growth Factor: A Secreted Protein Involved in Pacific Abalone Embryonic and Larval Development. Biology (Basel) 2022; 11:biology11101445. [PMID: 36290349 PMCID: PMC9598359 DOI: 10.3390/biology11101445] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/24/2022] [Accepted: 09/27/2022] [Indexed: 11/07/2022]
Abstract
Simple Summary The Pacific abalone, Haliotis discus hannai, is a gastropod mollusk in high demand, which is extensively cultured in many Asian countries. The growth and development of Pacific abalone depend on the activation of growth factors and other growth-regulating proteins. Growth factors are secreted, biologically active molecules that stimulate cell growth through signal transduction pathways. The mollusk-like growth factor (MLGF) is a mollusk specific growth factor in the adenosine deaminase related growth factor subfamily having a conserved adenosine deaminase (ADA) domain. Molecular functions of this growth factor include adenosine deaminase activity, growth factor activity, and zinc binding activity. For this growth factor activity, enzymatic activity (ADA activity) that converts adenosine to inosine to stimulate cell growth is essential. As abalone aquaculture completely depends on hatchery-produced seed, proper embryonic and larval development is essential, and MLGF is one of the main growth factors that can regulate this activity. In Pacific abalone, higher expression of Hdh-MLGF mRNA in the embryonic and larval development stages is an indication of higher production of adenosine and increases the growth factor activity that stimulates embryonic and larval cell growth through signal transduction pathways. Abstract Growth factors are mostly secreted proteins that play key roles in an organism’s biophysical processes through binding to specific receptors on the cell surface. The mollusk-like growth factor (MLGF) is a novel cell signaling protein in the adenosine deaminase-related growth factor (ADGF) subfamily. In this study, the MLGF gene was cloned and characterized from the digestive gland tissue of Pacific abalone and designated as Hdh-MLGF. The transcribed full-length sequence of Hdh-MLGF was 1829 bp long with a 1566 bp open reading frame (ORF) encoding 521 amino acids. The deduced amino acid sequence contained a putative signal peptide and two conserved adenosine deaminase domains responsible for regulating molecular function. Fluorescence in situ hybridization localized Hdh-MLGF in the submucosa layer of digestive tubules in the digestive gland. The mRNA expression analysis indicated that Hdh-MLGF expression was restricted to the digestive gland in the adult Pacific abalone. However, Hdh-MLGF mRNA expressions were observed in all stages of embryonic and larval development, suggesting Hdh-MLGF might be involved in the Pacific abalone embryonic and larval development. This is the first study describing Hdh-MLGF and its involvement in the Pacific abalone embryonic and larval development.
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Affiliation(s)
- Md Abu Hanif
- Department of Fisheries Science, Chonnam National University, Yeosu 59626, Korea
| | - Shaharior Hossen
- Department of Fisheries Science, Chonnam National University, Yeosu 59626, Korea
| | - Yusin Cho
- Department of Fisheries Science, Chonnam National University, Yeosu 59626, Korea
| | - Zahid Parvez Sukhan
- Department of Fisheries Science, Chonnam National University, Yeosu 59626, Korea
| | - Cheol Young Choi
- Division of Marine BioScience, National Korea Maritime and Ocean University, Busan 49112, Korea
| | - Kang Hee Kho
- Department of Fisheries Science, Chonnam National University, Yeosu 59626, Korea
- Correspondence: ; Tel.: +82-616-597-168; Fax: +82-616-597-169
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Akter J, Hanif MA, Islam MA, Sapkota KP, Hahn JR. Selective growth of Ti 3+/TiO 2/CNT and Ti 3+/TiO 2/C nanocomposite for enhanced visible-light utilization to degrade organic pollutants by lowering TiO 2-bandgap. Sci Rep 2021; 11:9490. [PMID: 33947935 PMCID: PMC8096813 DOI: 10.1038/s41598-021-89026-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 04/14/2021] [Indexed: 11/23/2022] Open
Abstract
A convenient route was developed for the selective preparation of two stable nanocomposites, Ti3+/TiO2/CNT (labeled as TTOC-1 and TTOC-3) and Ti3+/TiO2/carbon layer (labeled as TTOC-2), from the same precursor by varying the amount of single-walled carbon nanotubes used in the synthesis. TiO2 is an effective photocatalyst; however, its wide bandgap limits its usefulness to the UV region. As a solution to this problem, our prepared nanocomposites exhibit a small bandgap and wide visible-light (VL) absorption because of the introduction of carbonaceous species and Ti3+ vacancies. The photocatalytic efficiency of the nanocomposites was examined via the degradation of methylene blue dye under VL. Excellent photocatalytic activity of 83%, 98%, and 93% was observed for TTOC-1, TTOC-2, and TTOC-3 nanocomposites within 25 min. In addition, the photocatalytic degradation efficiency of TTOC-2 toward methyl orange, phenol, rhodamine B, and congo red was 28%, 69%, 71%, and 91%, respectively, under similar experimental conditions after 25 min. Higher reusability and structural integrity of the as-synthesized photocatalyst were confirmed within five consecutive runs by photocatalytic test and X-ray diffraction analysis, respectively. The resulting nanocomposites provide new insights into the development of VL-active and stable photocatalysts with high efficiencies.
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Affiliation(s)
- Jeasmin Akter
- Department of Chemistry, Jeonbuk National University, Jeonju, 54896, Korea
| | - Md Abu Hanif
- Department of Bioactive Material Sciences, Jeonbuk National University, Jeonju, 54896, Korea
| | - Md Akherul Islam
- Department of Bioactive Material Sciences, Jeonbuk National University, Jeonju, 54896, Korea
| | | | - Jae Ryang Hahn
- Department of Chemistry, Jeonbuk National University, Jeonju, 54896, Korea. .,Textile Engineering, Chemistry and Science, North Carolina State University, 2401 Research Dr., Raleigh, NC, 27695, USA.
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Sarker MZ, Islam MR, Dutta UK, Roy D, Nur AHMF, Wahid SMS, Hanif MA. Preoperative Evaluation and Surgical Outcome of Cochlear Implantation in NIENT. Bangladesh J of Otorhinolaryngology 2020. [DOI: 10.3329/bjo.v26i2.50640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Background: Sensory neural hearing loss (SNHL) is the most common congenital sensory deficit, with an incidence of one to three per 1000 live births. Acoustic deprivation during the first 3 years of life can hinder speech and language acquisition with significant negative consequences on a child’s educational and psychosocial development. The gold standard intervention for permanent severe to profound hearing loss is cochlear implantation. Cochlear implant (CI); is a semi implantable electronic device that bypass the cochlea.
Objectives: An observational study was carried out on 40 cases of pre-lingual deaf to find out the causes of pre-lingual deaf, to evaluate the preoperative procedures to set ideal criteria for pre -lingual cochlear implantation and to evaluate surgical procedure and outcome of cochlear implantations.
Methods: Evaluation of the candidates included patient medical history, general health checkup, ENT examination, audiometric evaluation, CT and MRI scans, psychological profile of the candidate. A limited cortical mastoidectomy was performed. The facial recess was opened using the fossa of incudis as an initial landmark. The round window niche was visualized through the facial recess about 2 mm inferior to the stapes. A cochleostomy created by drilling over the basal turn of the cochlea anterior and inferior to the annulus of the round window membrane. The electrode array was then carefully inserted through the fenestra into the scala tympani of the cochlea. Electrophysiological testing (Neural Response Telemetry: NRT) was performed to verify the correct placement of active electrodes.
Resulst: Among them 22 (55%) were male and 18 (45%) were female. Male female ratio was 1.2:1. Age distribution at implantation was 3.3±1.054(SD). Average hearing loss was 96.4±5.3(SD) dB and in aided audiogram was 63.7±4.6(SD) dB. Overall complications occurred in 10 (25%) cases. Transient facial nerve paresis in 2 (5%), injury of tympanic membrane in 1(2.5%), seroma 4(10%) and delayed otitis media in 1(2.5%) were observed. Major postoperative complications occurred in 2 cases including facial nerve palsy in 1(2.5%) case and spontaneous device failure in 1(2.5%) case.
Conclusion: The result of this survey was find out the risk factor of congenital hearing loss. With a thorough preoperative evaluation, we can select proper candidates for CI which is a reliable and safe procedure with a low percentage of severe complication.
Bangladesh J Otorhinolaryngol; October 2020; 26(2): 128-135
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11
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Sapkota KP, Hassan MM, Shrestha S, Hanif MA, Islam MA, Akter J, Abbas HG, Hahn JR. Heterojunction formation between copper(II) oxide nanoparticles and single-walled carbon nanotubes to enhance antibacterial performance. Int J Pharm 2020; 590:119937. [PMID: 33011252 DOI: 10.1016/j.ijpharm.2020.119937] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 09/23/2020] [Accepted: 09/27/2020] [Indexed: 12/19/2022]
Abstract
We delineate the excellent bactericidal efficacy of stable heterojunction nanocomposites composed of single-walled carbon nanotubes (SWCNTs) and copper(II) oxide (CuO) synthesized via facile recrystallization and calcination. The bactericidal effectiveness of the fabricated nanocomposites was examined using the standard broth-dilution method and the growth-inhibition-zone analysis method, in which bacteria cultured in an incubator in tryptic soy broth medium were subjected to the prepared samples. The bactericidal activity of all of the as-synthesized samples is evident in both methods, displaying a substantial decrease in bacterial colonies and resulting in clear inhibition zones, respectively. Among the CuO-SWCNT nanocomposites, the sample subjected to calcination at 500 °C for 5 h was found to exhibit the best performance against Staphylococcus aureus and Escherichia coli, forming inhibition zones 182% and 162% larger than those formed by pure CuO, respectively.
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Affiliation(s)
- Kamal Prasad Sapkota
- Department of Chemistry, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, South Korea; Department of Chemistry, Amrit Campus, Tribhuvan University, Kathmandu 44618, Nepal
| | - Md Mehedi Hassan
- Department of Biomedical Sciences and Institute for Medical Science, Jeonbuk National University, Jeonju 54907, South Korea
| | - Sita Shrestha
- Department of Bionanosystem Engineering, Graduate School, Jeonbuk National University, Jeonju 54896, South Korea
| | - Md Abu Hanif
- Department of Chemistry, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, South Korea
| | - Md Akherul Islam
- Department of Chemistry, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, South Korea
| | - Jeasmin Akter
- Department of Chemistry, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, South Korea
| | - Hafiz Ghulam Abbas
- Department of Nanoscience and Nanotechnology, Jeonbuk National University, Jeonju 54896, South Korea
| | - Jae Ryang Hahn
- Department of Chemistry, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, South Korea; Department of Nanoscience and Nanotechnology, Jeonbuk National University, Jeonju 54896, South Korea; Textile Engineering, Chemistry and Science, North Carolina State University, 2401 Research Dr., Raleigh, NC 27695-8301, USA
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12
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Hanif MA. Head and Neck Cancer - Bangladesh Perspective. Bangladesh J of Otorhinolaryngology 2020. [DOI: 10.3329/bjo.v24i1.45326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Abstract not available
Bangladesh J Otorhinolaryngol; April 2018; 24(1): 1-2
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Reza-Ul-Haq KM, Hanif MA, Tabassum R, Ahmed S, Islam MS, Naher S, Asha MT, Islam S, Siddiqui AI. Comparative Study between Conventional Method and Endonasal Endoscopic Resection of Juvenile Nasopharyngeal Angiofibroma. Mymensingh Med J 2018; 27:785-792. [PMID: 30487495] [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
Juvenile Nasopharyngeal Angiofibroma (JNA) is an uncommon, benign and extremely vascular tumour which accounts for 0.05-0.5% of all head and neck tumours. Now a day, endoscopic excision is a preferred surgery for early cases. This study was done with the aim to compare the outcomes and complications between endoscopic and conventional surgery of JNA. This cross sectional observational study was conducted in the Department of Otolaryngology & Head-Neck Surgery at Mymensingh Medical College Hospital, Mymensingh and Bangabandhu Sheikh Mujib Medical University, Dhaka from 8 March 2014 to 7 March, 2015. A total number of 20 cases were purposively selected and patient with intracranial extension were excluded from the study. Data was analyzed with SPSS software. Among the 20 patients, maximum 18(90%) were in 2nd decade, age was ranging from 11-33 years, mean 16.17 years. Maximum patients 13(65%) came with nasal obstruction and epistaxis and majority 13(65%) of them were in stage II. Endoscopic excision was done in 12(60%) cases and conventional surgery was done in 7(35%) cases. Mean hospital stay of endoscopic and conventional group was 4.62 vs. 10.23 days. Mean blood loss and mean operative time were 528.12ml vs. 1050ml and 2 hours 17 minutes vs. 3 hours 28 minutes respectively. Per-operative and postoperative complication were more (53.85%) in conventional surgery group. Endoscopic excision of nasopharyngeal angiofibroma is more preferable due to less operative time, less hospital stay, less per-operative blood loss and less complications. But in advanced cases conventional surgery and combined surgery is preferred.
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Affiliation(s)
- K M Reza-Ul-Haq
- Dr KM Reza-Ul-Haq, Assistant Professor, Department of ENT and Head Neck Surgery, Delta Medical College, Mirpur, Dhaka, Bangladesh
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14
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Mahmood T, Nawaz H, Ditta A, Majeed MI, Hanif MA, Rashid N, Bhatti HN, Nargis HF, Saleem M, Bonnier F, Byrne HJ. Raman spectral analysis for rapid screening of dengue infection. Spectrochim Acta A Mol Biomol Spectrosc 2018; 200:136-142. [PMID: 29677500 DOI: 10.1016/j.saa.2018.04.018] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 04/02/2018] [Accepted: 04/09/2018] [Indexed: 05/22/2023]
Abstract
Infection with the dengue virus is currently clinically detected according to different biomarkers in human blood plasma, commonly measured by enzyme linked immunosorbent assays, including non-structural proteins (Ns1), immunoglobulin M (IgM) and immunoglobulin G (IgG). However, there is little or no mutual correlation between the biomarkers, as demonstrated in this study by a comparison of their levels in samples from 17 patients. As an alternative, the label free, rapid screening technique, Raman spectroscopy has been used for the characterisation/diagnosis of healthy and dengue infected human blood plasma samples. In dengue positive samples, changes in specific Raman spectral bands associated with lipidic and amino acid/protein content are observed and assigned based on literature and these features can be considered as markers associated with dengue development. Based on the spectroscopic analysis of the current, albeit limited, cohort of samples, Principal Components Analysis (PCA) coupled Factorial Discriminant Analysis, yielded values of 97.95% sensitivity and 95.40% specificity for identification of dengue infection. Furthermore, in a comparison of the normal samples to the patient samples which scored low for only one of the biomarker tests, but high or medium for either or both of the other two, PCA-FDA demonstrated a sensitivity of 97.38% and specificity of 86.18%, thus providing an unambiguous screening technology.
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Affiliation(s)
- T Mahmood
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - H Nawaz
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan.
| | - A Ditta
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - M I Majeed
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - M A Hanif
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - N Rashid
- University of Central Punjab, Faisalabad campus, Faisalabad, Pakistan
| | - H N Bhatti
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - H F Nargis
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - M Saleem
- National Institute of Lasers and Optronics (NILOP), Islamabad, Pakistan
| | - F Bonnier
- EA 6295 Nano-médicaments and nano-sondes, Université François-Rabelais de Tours, Tours, France
| | - H J Byrne
- FOCAS Research Institute, Dublin Institute of Technology, Kevin Street, Dublin 8, Ireland
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15
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Hafiz I, Bhatti HN, Hanif MA, Shahid M. In-vitro antibacterial and antioxidant potential of winged prickly ash, green tea and thyme. J BIOL REG HOMEOS AG 2018; 32:101-106. [PMID: 29504372] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Herbs and plants are mostly used as antimicrobials and antioxidants owing to the harmfulness and linked side-effects of synthetic chemical constituents. Plants and spices produce various metabolites with antibacterial and antioxidant potential. These metabolites are principally revealed as encouraging healing components or mediators which control ailments in human beings. The present study was aimed to characterize the extracts from selected medicinal plants through in-vitro activities. Winged prickly ash, green tea and thyme were selected and extracted through ethanol and methanol solutions. The extracts were assessed for antibacterial and antioxidant activities. The antibacterial potential of extracts showed the significant extent of the activity against Bacillus subtilis and E. coli. The maximum activity was noted in 80% methanolic fraction of Thymus vulgaris (15.20±0.64 mm) against Bacillus subtilis. Antioxidant potential exhibited the highest phenolic and flavonoid content in Camellia sinensis . The total phenolic content was significantly higher (1456.26±12.05 mg gallic acid) in 80% ethanolic fraction of Camellia sinensis. The flavonoid content in different plant extracts ranged from 8.17±2.02 to 376.29±7.11 mg/g. The radical scavenging DPPH assay also showed the significant antioxidant capacity of selected plants with the methanolic (50%) extract of Camellia sinensis found to be the most potent (78.95±7.12%). It was concluded that the alcoholic extracts of selected medicinal plants revealed the effective antibacterial and antioxidant activity, showing protective prospective against oxidative injury.
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Affiliation(s)
- I Hafiz
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - H N Bhatti
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - M A Hanif
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - M Shahid
- Department of Biochemistry, University of Agriculture, Faisalabad, Pakistan
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16
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Siddique MA, Hossen M, Khan JA, Hanif MA. Recurrent Laryngeal Nerve Injury in Thyroid Surgery: One Year Prospective Study in a Tertiary Care Hospital. Mymensingh Med J 2015; 24:502-505. [PMID: 26329947] [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
This prospective, cross sectional study was carried out in the Department of Otolaryngology & Head-Neck Surgery, Mymensingh Medical College Hospital, Bangladesh from August 2010 to July 2011. One hundred & twenty eight (128) patients with thyroid swelling who underwent surgery were purposely included. The study was designed to determine the incidence of recurrent laryngeal nerve injury during thyroid surgery. Among the 128 patients, female were predominant 78.90%, majority of the patient were in third decade, 96.87% patients were biochemically euthyroid. Total 5.46% patient had recurrent laryngeal nerve injury. Among them 14.28% had transient and 85.72% had permanent injury. Injury was more in total thyroidectomy done for extensive malignancy.
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Affiliation(s)
- M A Siddique
- Dr Mazharul Alam Siddique, Resident Surgeon (ENT), Mymensingh Medical College Hospital, Mymensingh, Bangladesh
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17
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Hossain MA, Sarker MZ, Bhuiyan MAR, Alam KMN, Harun MAA, Hanif MA. Results of Tympanomastoid surgery in CSOM with Cholesteatoma (Attico-Antral Variety) - A study of 30 cases. Bangladesh J of Otorhinolaryngology 2015. [DOI: 10.3329/bjo.v20i1.22013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In this prospective study 30 case of CSOM with cholesteotoma, admitted in 3 tertiary level hospitals, where modified radical mastoidectomy with type III tympanoplasty were done, then results of operation were assessed in follow up. The objectives of study to assess the clearance of disease, recurrence of disease and the cavity problem and to find the take rates of graft and improvement of hearing level after surgery. In this study most of the cases were younger age group (40%), male (60%), poorsocio- economic condition (73:33%), Illiterate (46.67%), day laborer (26.67%) & rural peoples (80%). It was observed that hearing status was improved 46.67%, unchanged 33.33% and deteriorated 20% cases. The mean, hearing gain was 10.79 dB. Also post mastoidectomy discharging ear was 20%, facial palsy 3.33%, recurrence of cholesteatoma 13.33%, dead ear 0%. Early detection and management of CSOM with cholesteatoma should be our goal to prevent complications. If good tympanomastoid surgery is done meticulously there will be improvement of hearing and less complications. DOI: http://dx.doi.org/10.3329/bjo.v20i1.22013 Bangladesh J Otorhinolaryngol; April 2014; 20(1): 20-26
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18
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Masud MK, Ahmad SM, Karim MA, Ferdouse F, Fakir AY, Hanif MA, Abdullah M, Roy AS. Complications of neck dissection at a tertiary level hospital: study of 30 cases. Mymensingh Med J 2014; 23:658-666. [PMID: 25481582] [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
Metastatic dissemination into lymph nodes of neck occurs frequently in head neck cancers which down grade the patient's curability and survival. Neck dissection is a curable option for its management. To evaluate the complications following different types of neck dissection. This cross sectional study was conducted among patients undergone different types of neck dissection due to cervical nodal metastasis and attended follow up during July 2010 to June 2011 in Department of ENTs and Head-Neck surgery Dhaka Medical College Hospital, Dhaka, Bangladesh. Among 30 selected patient, 23 were male (76.67%) and 7 were female (23.33%), age ranged from 31-72 years (Mean=59.1±5.44). In different modalities of neck dissection 11 were modified neck dissection (36.67%) and 10(33.33%) were radical neck dissection. Common indication was carcinoma of unknown origin (66.67%). Involved neck nodes were commonly level II-IV (69.99%). Nodal stage was N2(50%) and N3 (40%).Common immediate complications were bleeding 03(10%), facial oedema 02 (6.67%) and thoracic duct injury 02(6.67%). Intermediate complications were seroma 05(16.67%), wound infection 04(13.33%) and chylous fistula 02(6.67%), Late Complications were hypertrophic scar 07(23.33%) and shoulder syndrome 06(20%). Proper indications, skilled surgery along with early recognize and treatment in both early and late manifestations of neck dissection preventing its grave sequence.
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Affiliation(s)
- M K Masud
- Dr Mostafa Kamal Masud, Registrar, Department of ENT, Mymensingh Medical college Hospital, Mymensingh, Bangladesh
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19
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Alam KMN, Ali MI, Huq MM, Hanif MA. Prognostic factors influencing anatomical and functional outcome of Myringoplasty. Bangladesh J of Otorhinolaryngology 2013. [DOI: 10.3329/bjo.v19i1.14858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To assess the rate of healing of tympanic membrane, hearing status before and after operation and determine the factors influencing surgical outcome. Methods: This cross-sectional study was done in the department of Otolaryngology & Head- Neck Surgery of SSMC & Mitford Hospital, Dhaka, during the period of January, 2008 to December, 2009. A total of 60 patients was underwent myringoplasty operation and taken detailed history, clinical findings and post operative assessment. Analyzed data presented by various tables, graphs and figures. Results: The study included 60 patients of myringoplasty operation. Age of the patient was between 15-45 years. Out of 60 patients male was 60% and female was 40%. Highest number of patients was in the age group of 15-25 years. Conclusion: Hearing improvement after myringoplasty in anatomically successful cases improve quality of life of the patient. DOI: http://dx.doi.org/10.3329/bjo.v19i1.14858 Bangladesh J Otorhinolaryngol 2013; 19(1): 18-23
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Siddique MA, Sabur MA, Kundu SC, Mostafa MG, Khan JA, Ahmed S, Karim MA, Hanif MA. Difficulty in diagnosis of nasopharyngeal carcinoma. Mymensingh Med J 2012; 21:158-161. [PMID: 22314474] [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: 05/31/2023]
Abstract
Due to difficult anatomical position nasopharyngeal carcinoma (NPC) is always challenging problems both from the diagnostic and therapeutic corner. A 24 years old lady came to our Department of Otolaryngology and Head-Neck Surgery with the complaints of epistaxis, right sided neck swelling, nasal obstruction and headache. On digital palpation Nasopharyngeal mass was found. We took biopsy from nasopharynx under indirect vision but report was not conclusive. Then we did CT scan, nasendoscopy. Nasendoscopy showed bilateral ethmoidal polyp with nasopharyngeal mass. We took biopsy from the nasopharyngeal mass and confirmed the diagnosis.
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Affiliation(s)
- M A Siddique
- Department of Otolaryngology and Head-Neck Surgery, Mymensingh Medical College Hospital, Mymensingh, Bangladesh
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21
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Bhatti HN, Najma A, Asgher M, Hanif MA, Zia MA. Purification and Thermal Characterization of a Novel Peroxidase from a Local Chick Pea Cultivar. Protein Pept Lett 2006; 13:799-804. [PMID: 17073725 DOI: 10.2174/092986606777841271] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A novel peroxidase isolated from a local chick pea (Cicer arietinum L.) cultivar (Balksar 2000) was purified by means of ammonium sulfate precipitation, DEAE-cellulose chromatography and two runs on gel filtration. The purified enzyme has a specific activity of 2045 U/mg with 17 % activity recovery. The molecular mass of the enzyme was estimated to be 39 kDa by SDS-polyacrylamide gel electrophoresis. Optimum pH and temperature of the enzyme were 5.5 and 45 degrees C respectively. The thermal denaturation of local chick pea peroxidase was studied in aqueous solution at temperatures ranging from 45 degrees C to 65 degrees C. The temperature of 50% inactivation of the enzyme was found to be 68 degrees C. The enthalpy (DeltaH*) and free energy (DeltaG*) of thermal denaturation of chick pea peroxidase were 101.4 and 103.4 k J/mol respectively at 65 degrees C. Metals like Zn2+, Mn2+, Hg2+, Co2+ and Al3+ slightly inhibited the peroxidase activity while Ca2+, Mg2+ and Ba2+ have no effect on enzyme activity. The high specific activity and thermal stability make chick pea peroxidase an alternative to horseradish peroxidase (HRP) in various applications.
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Affiliation(s)
- H N Bhatti
- Industrial Biotechnology Laboratory, Department of Chemistry, University of Agriculture, Faisalabad, Pakistan-38040.
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Hanif MA, Chandrasekar R, Blair SD. Pelvic Kidney and Aorto-iliac Aneurysm—A Rare Association—Case Report and Literature Review. Eur J Vasc Endovasc Surg 2005; 30:531-3. [PMID: 15964221 DOI: 10.1016/j.ejvs.2005.04.044] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2005] [Accepted: 04/14/2005] [Indexed: 11/26/2022]
Abstract
Association of a congenital pelvic kidney with abdominal aortic aneurysm is rare and to date only a handful cases have been reported in literature. We report one such case, which was successfully treated using the technique of temporary extra-anatomical perfusion of the kidney.
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