1
|
Sarkar MAM, Arefin MS, Khan MMR, Saha M, Alam MR, Ghosh CK, Ahmed DS, Masud MH, Roy PK. Demographic and Clinical Characteristics of Functional Dyspepsia and Its Subtypes in Adult Patients: An Experience from a Tertiary Care Centre in Bangladesh. Mymensingh Med J 2024; 33:426-432. [PMID: 38557521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Functional dyspepsia (FD) is a common gastrointestinal problem in the world. The Rome III consensus subdivided functional dyspepsia into two groups: meal-related postprandial distress syndrome (PDS) and meal-unrelated epigastric pain syndrome (EPS). Limited data are available regarding FD in Bangladesh. The aim of this study was to investigate the demographic and clinical characteristics of FD and its sub-types. This cross-sectional study was conducted in which we recruited patients who attended the outpatient department of Gastroenterology of Bangabandhu Sheikh Mujib Medical University, Bangladesh from March 2017 to February 2018. Patients fulfilling Rome III FD criteria and a negative upper GIT endoscopy were included for this study. The patients were then subdivided into 'pure' PDS (i.e. meeting criteria for PDS without EPS symptoms), 'pure' EPS (i.e., meeting criteria for EPS without PDS symptoms), and overlapping PDS-EPS (i.e., symptoms of both PDS and EPS) groups. Total of 368 FD patients (56.0% females, mean age 32.8±8.6 years, BMI: 22.0±2.7), were included in this study. Out of them, 112(30.4%) patients (57.2% females, mean age 33.9±9.3 years, BMI: 22.0±2.7) fulfilled criteria of pure EPS and 64(17.4%) patients (68.8% females, mean age 33.2±7.8 years, BMI: 22.1±2.4) fulfilled criteria of pure PDS. However, the majority of patients [192(52.2%), 52.1% females, mean age 32.0±8.4 years, BMI: 21.9±2.8] had symptoms of overlapping EPS-PDS. More than 40% of patients in our study presented with 3 or more of the four key symptoms of FD. A longer duration of presenting symptoms was seen among patients with overlapping EPS-PDS in comparison to pure EPS and pure PDS (p<0.001). A significant overlap of symptoms of both EPS and PDS was noticed among patients with FD. The value of dividing functional dyspepsia into the subgroups of PDS and EPS is thus questionable. Further research and modification of the diagnostic criteria for FD subtypes are necessary.
Collapse
Affiliation(s)
- M A M Sarkar
- Dr Md Abdul Mumit Sarkar, Resident, Department of Gastroenterology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
| | | | | | | | | | | | | | | | | |
Collapse
|
2
|
Shehwar D, Barki S, Aliotta A, Veuthey L, Bertaggia Calderara D, Alberio L, Alam MR. Inhibition of mitochondrial calcium transporters alters adp-induced platelet responses. Mol Biol Rep 2024; 51:177. [PMID: 38252254 DOI: 10.1007/s11033-023-09116-7] [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: 06/01/2023] [Accepted: 12/06/2023] [Indexed: 01/23/2024]
Abstract
INTRODUCTION ADP-stimulated elevation of cytosolic Ca2+ is an important effector mechanism for platelet activation. The rapidly elevating cytosolic Ca2+ is also transported to mitochondrial matrix via Mitochondrial Ca2+ Uniporter (MCU) and extruded via Na+/Ca2+/Li+ Exchanger (NCLX). However, the exact contribution of MCU and NCLX in ADP-mediated platelet responses remains incompletely understood. METHODS AND RESULTS The present study aimed to elucidate the role of mitochondrial Ca2+ transport in ADP-stimulated platelet responses by inhibition of MCU and NCLX with mitoxantrone (MTX) and CGP37157 (CGP), respectively. As these inhibitory strategies are reported to cause distinct effects on matrix Ca2+ concentration, we hypothesized to observe opposite impact of MTX and CGP on ADP-induced platelet responses. Platelet aggregation profiling was performed by microplate-based spectrophotometery while p-selectin externalization and integrin αIIbβ3 activation were analyzed by fluorescent immunolabeling using flow cytometery. Our results confirmed the expression of both MCU and NCLX mRNAs with relatively low abundance of NCLX in human platelets. In line with our hypothesis, MTX caused a dose-dependent inhibition of ADP-induced platelet aggregation without displaying any cytotoxicity. Likewise, ADP-induced p-selectin externalization and integrin αIIbβ3 activation was also significantly attenuated in MTX-treated platelets. Concordantly, inhibition of NCLX with CGP yielded an accelerated ADP-stimulated platelet aggregation which was associated with an elevation of p-selectin surface expression and αIIbβ3 activation. CONCLUSION Together, these findings uncover a vital and hitherto poorly characterized role of mitochondrial Ca2+ transporters in ADP-induced platelet activation.
Collapse
Affiliation(s)
- Durre Shehwar
- Department of Biochemistry, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Saima Barki
- Department of Biochemistry, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Alessandro Aliotta
- Hemostasis and Platelet Research Laboratory, Division of Hematology and Central Hematology Laboratory, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), CH-1010, Lausanne, Switzerland
| | - Lucas Veuthey
- Hemostasis and Platelet Research Laboratory, Division of Hematology and Central Hematology Laboratory, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), CH-1010, Lausanne, Switzerland
| | - Debora Bertaggia Calderara
- Hemostasis and Platelet Research Laboratory, Division of Hematology and Central Hematology Laboratory, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), CH-1010, Lausanne, Switzerland
| | - Lorenzo Alberio
- Hemostasis and Platelet Research Laboratory, Division of Hematology and Central Hematology Laboratory, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), CH-1010, Lausanne, Switzerland
| | - Muhammad Rizwan Alam
- Department of Biochemistry, Quaid-I-Azam University, Islamabad, 45320, Pakistan.
| |
Collapse
|
3
|
Malik MA, Saqib MAN, Mientjes E, Acharya A, Alam MR, Wallaard I, Schrauwen I, Bamshad MJ, Santos-Cortez RLP, Elgersma Y, Leal SM, Ansar M. A loss of function variant in AGPAT3 underlies intellectual disability and retinitis pigmentosa (IDRP) syndrome. Eur J Hum Genet 2023; 31:1447-1454. [PMID: 37821758 PMCID: PMC10689475 DOI: 10.1038/s41431-023-01475-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/17/2023] [Accepted: 09/27/2023] [Indexed: 10/13/2023] Open
Abstract
Intellectual disability (ID) and retinal dystrophy (RD) are the frequently found features of multiple syndromes involving additional systemic manifestations. Here, we studied a family with four members presenting severe ID and retinitis pigmentosa (RP). Using genome wide genotyping and exome sequencing, we identified a nonsense variant c.747 C > A (p.Tyr249Ter) in exon 7 of AGPAT3 which co-segregates with the disease phenotype. Western blot analysis of overexpressed WT and mutant AGPAT3 in HEK293T cells showed the absence of AGPAT3, suggesting instability of the truncated protein. Knockdown of Agpat3 in the embryonic mouse brain caused marked deficits in neuronal migration, strongly suggesting that reduced expression of AGPAT3 affects neuronal function. Altogether, our data indicates that AGPAT3 activity is essential for neuronal functioning and loss of its activity probably causes intellectual disability and retinitis pigmentosa (IDRP) syndrome.
Collapse
Affiliation(s)
- Madiha Amin Malik
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan
- Department of Neuroscience, Erasmus University Medical Center, Rotterdam, The Netherlands
| | | | - Edwin Mientjes
- Department of Neuroscience, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Anushree Acharya
- Center for Statistical Genetics, Gertrude H. Sergievsky Center, and the Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Muhammad Rizwan Alam
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Ilse Wallaard
- Department of Neuroscience, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Isabelle Schrauwen
- Center for Statistical Genetics, Gertrude H. Sergievsky Center, and the Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Michael J Bamshad
- Department of Genome Sciences, University of Washington, William H. Foege Hall, 3720 15th Ave. NE, Seattle, WA, 98195, USA
- Department of Pediatrics, University of Washington, Seattle, WA, USA
| | - Regie Lyn P Santos-Cortez
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, University of Colorado Anschutz Medical Campus (CU-AMC), 12700 E. 19th Ave, Aurora, CO, 80045, USA
| | - Ype Elgersma
- Department of Neuroscience, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Suzanne M Leal
- Center for Statistical Genetics, Gertrude H. Sergievsky Center, and the Department of Neurology, Columbia University Medical Center, New York, NY, USA.
- Taub Institute for Alzheimer's Disease and the Aging Brain, Columbia University Medical Center, New York, NY, USA.
| | - Muhammad Ansar
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan.
| |
Collapse
|
4
|
Zannat H, Mamun AA, Salahuddin AZ, Alam MR, Kabir MH, Mobasshera M, Ashraf R, Nahar KS, Hossain R. Clinical Profiles and Outcomes of Cytomegalovirus Positive Renal Transplant Patients in Early Post-Transplant Period. Mymensingh Med J 2023; 32:371-377. [PMID: 37002747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
Cytomegalovirus infection can cause increased mortality and morbidity in renal transplant recipient. The purpose of the present study was to observe the clinical profiles and outcomes of Cytomegalovirus positive renal transplant patients in early post-transplant period. This prospective cohort study was conducted in the Department of Nephrology at Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh from September 2016 to August 2017. Adult patients who had undergone renal transplantation were selected as study population. CMV serology (CMV IgM and CMV IgG) of both donor and recipient were detected before renal transplantation. Cytomegalovirus viral DNA was extracted from both serum by using a commercially available DNA extraction kit and PCR was done by the StepOne™ PCR machine using real time PCR kit in all patient during the early post-transplant period. During this period, sign symptoms of patients with cytomegalovirus infection as well as clinical outcomes were also noted. Total number of 32 patients was included in this study with the mean age of 31.15±11.56 years. Cytomegalovirus was found positive in 11(34.4%) patients and negative in 21(65.6%) patients. Anorexia was the most common presentation which was found in 81.8% cases followed by renal impairment, fever, diarrhea, cough and weight loss which were present in 6(54.5%), 3(27.3%), 2(18.2%), 2(18.2%) and 2(18.2%) cases respectively. The outcomes of cytomegalovirus positive patients in first 6 months after renal transplantation revealed 25.0% patients had cytomegalovirus infection; 6.2% patients had cytomegalovirus disease and 6.2% patients were died. However, 9.4% patients had co-infection in the form of UTI and 6.2% patients had re activation of hepatitis C infection associated with cytomegalovirus infection. Cytomegalovirus was found positive in approximately one third of renal transplant recipients in early post-transplant period. Careful clinical evaluation and appropriate laboratory parameters should be looked over for timely diagnosis and management of these cases.
Collapse
Affiliation(s)
- H Zannat
- Dr Hasinatul Zannat, Registrar, National Institute of Kidney Diseases and Urology (NIKDU), Dhaka, Bangladesh; E-mail:
| | | | | | | | | | | | | | | | | |
Collapse
|
5
|
Islam F, Alam MR, Mamun SMAAL, Hossain MS. Occupational safety practice among metal workers in Bangladesh: a community-level study. J Occup Med Toxicol 2022; 17:23. [PMID: 36510280 PMCID: PMC9745989 DOI: 10.1186/s12995-022-00366-y] [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: 09/12/2022] [Accepted: 12/06/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The overall information on occupational health and safety (OHS)-related knowledge and workplace practices are scarce in Bangladesh. This study aimed to (i) examine the prevalence of occupational injuries, (ii) explore the level of OHS-related knowledge and practice among workers and associated factors, and (iii) investigate the socioeconomic factors and OHS-related knowledge and practice scores as determinants of injury among metal workers at a community setting in Bangladesh. METHODS This was a cross-sectional study conducted on all the functional metal workshops in a community of a town. The sociodemographic characteristics, history of injury and its consequences, and the state of knowledge and practice were measured using descriptive statistics. Univariate and multivariate analyses were used to measure the association between practice scores and sociodemographic factors and knowledge. Logistic regression was conducted to get the odds ratio of getting injured. RESULTS A high annual rate (82.9%) of occupational injuries was documented in a one-year timeframe and the majority (81.1%) of injured workers lost more than three working days (median 20 days). Workers working in workshops with more than three workers were 3.3 times more likely to be injured [AOR = 3.33, 95% CI = 1.16, 9.58] compared to the workers in factories with one to three workers. Most of the workers had the basic knowledge related to OHS but the mean practice score was very low, 1.86 (SD 1.17). Higher education, lower monthly family income, and being an owner significantly led to higher practice scores. CONCLUSIONS The OHS-related knowledge was not properly translated into good workplace practices in small informal metal workshops because of the absence of implementation of OHS policies and monitoring by the relevant authority. Government should support the informal metal working sector to increase awareness and skills for the prevention and proper management of injuries and risks, and to ensure access to safety equipment and a safe environment.
Collapse
Affiliation(s)
- Farhin Islam
- grid.512192.cDepartment of Emerging and Neglected Diseases, Biomedical Research Foundation, House- 22, 6th Floor, Road- 08, Sector- 09, Uttara, Dhaka, 1230 Bangladesh
| | - MR Alam
- grid.512192.cDepartment of Emerging and Neglected Diseases, Biomedical Research Foundation, House- 22, 6th Floor, Road- 08, Sector- 09, Uttara, Dhaka, 1230 Bangladesh
| | - SM Abdullah AL Mamun
- grid.512192.cDepartment of Emerging and Neglected Diseases, Biomedical Research Foundation, House- 22, 6th Floor, Road- 08, Sector- 09, Uttara, Dhaka, 1230 Bangladesh
| | - Mohammad Sorowar Hossain
- grid.512192.cDepartment of Emerging and Neglected Diseases, Biomedical Research Foundation, House- 22, 6th Floor, Road- 08, Sector- 09, Uttara, Dhaka, 1230 Bangladesh ,grid.443005.60000 0004 0443 2564Department of Environmental Science and Management, Independent University, Bangladesh (IUB), Dhaka, Bangladesh
| |
Collapse
|
6
|
Duponchel S, Monnier L, Molle J, Bendridi N, Alam MR, Gaballah A, Grigorov B, Ivanov A, Schmiel M, Odenthal M, Ovize M, Rieusset J, Zoulim F, Bartosch B. Hepatitis C virus replication requires integrity of mitochondria-associated ER membranes. JHEP Rep 2022; 5:100647. [PMID: 36718430 PMCID: PMC9883273 DOI: 10.1016/j.jhepr.2022.100647] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 12/13/2022]
Abstract
Background & Aims Chronic HCV infection causes cellular stress, fibrosis and predisposes to hepatocarcinogenesis. Mitochondria play key roles in orchestrating stress responses by regulating bioenergetics, inflammation and apoptosis. To better understand the role of mitochondria in the viral life cycle and disease progression of chronic hepatitis C, we studied morphological and functional mitochondrial alterations induced by HCV using productively infected hepatoma cells and patient livers. Methods Biochemical and imaging assays were used to assess localization of cellular and viral proteins and mitochondrial functions in cell cultures and liver biopsies. Cyclophilin D (CypD) knockout was performed using CRISPR/Cas9 technology. Viral replication was quantified by quantitative reverse-transcription PCR and western blotting. Results Several HCV proteins were found to associate with mitochondria-associated endoplasmic reticulum (ER) membranes (MAMs), the points of contact between the ER and mitochondria. Downregulation of CypD, which is known to disrupt MAM integrity, reduced viral replication, suggesting that MAMs play an important role in the viral life cycle. This process was rescued by ectopic CypD expression. Furthermore, HCV proteins were found to associate with voltage dependent anion channel 1 (VDAC1) at MAMs and to reduce VDAC1 protein levels at MAMs in vitro and in patient biopsies. This association did not affect MAM-associated functions in glucose homeostasis and Ca2+ signaling. Conclusions HCV proteins associate specifically with MAMs and MAMs play an important role in viral replication. The association between viral proteins and MAMs did not impact Ca2+ signaling between the ER and mitochondria or glucose homeostasis. Whether additional functions of MAMs and/or VDAC are impacted by HCV and contribute to the associated pathology remains to be assessed. Impact and implications Hepatitis C virus infects the liver, where it causes inflammation, cell damage and increases the long-term risk of liver cancer. We show that several HCV proteins interact with mitochondria in liver cells and alter the composition of mitochondrial subdomains. Importantly, HCV requires the architecture of these mitochondrial subdomains to remain intact for efficient viral replication.
Collapse
Key Words
- CypD, cyclophilin D
- DMVs, double membrane vesicles
- EM, electron microscopy
- ER, endoplasmic reticulum
- Grp75, glucose-regulated protein 75
- HCC, hepatocellular carcinoma
- HCVcc, cell culture-derived HCV
- IP, immunoprecipitation
- IP3R1, inositol trisphosphate receptor 1
- KO, knockout
- MAMs, mitochondria-associated ER membranes
- MOI, multiplicity of infection
- OMM, outer mitochondrial membrane
- PLA, proximity ligation assay
- S1R, sigma 1 receptor
- VDAC, voltage-dependent anion channel
- dpi, days post infection
- fibrosis
- hepatitis C virus
- mitochondria-associated ER membranes
- voltage-dependent anion channel 1
Collapse
Affiliation(s)
- Sarah Duponchel
- Univ Lyon, Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre Léon Bérard, Centre de Recherche en Cancérologie de Lyon, Lyon, 69434, France
| | - Lea Monnier
- Univ Lyon, Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre Léon Bérard, Centre de Recherche en Cancérologie de Lyon, Lyon, 69434, France
| | - Jennifer Molle
- Univ Lyon, Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre Léon Bérard, Centre de Recherche en Cancérologie de Lyon, Lyon, 69434, France
| | - Nadia Bendridi
- Laboratoire CarMeN, INSERM U-1060, INRA U-1397, Université Lyon, Université Claude Bernard Lyon 1, Pierre Bénite, 69495, France
| | - Muhammad Rizwan Alam
- CarMeN Laboratory, Hôpital Louis Pradel, Hospices Civils de Lyon, Université de Lyon and Explorations Fonctionnelles Cardiovasculaires, INSERM U1060, Lyon, France
| | - Ahmed Gaballah
- Univ Lyon, Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre Léon Bérard, Centre de Recherche en Cancérologie de Lyon, Lyon, 69434, France,Microbiology Department, Medical Research Institute, Alexandria University, Egypt
| | - Boyan Grigorov
- Univ Lyon, Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre Léon Bérard, Centre de Recherche en Cancérologie de Lyon, Lyon, 69434, France
| | - Alexander Ivanov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Marcel Schmiel
- Institute of Pathology, University Hospital of Cologne and Center for Molecular Medicine (CMMC), University of Cologne, Germany
| | - Margarete Odenthal
- Institute of Pathology, University Hospital of Cologne and Center for Molecular Medicine (CMMC), University of Cologne, Germany
| | - Michel Ovize
- CarMeN Laboratory, Hôpital Louis Pradel, Hospices Civils de Lyon, Université de Lyon and Explorations Fonctionnelles Cardiovasculaires, INSERM U1060, Lyon, France
| | - Jennifer Rieusset
- Laboratoire CarMeN, INSERM U-1060, INRA U-1397, Université Lyon, Université Claude Bernard Lyon 1, Pierre Bénite, 69495, France
| | - Fabien Zoulim
- Univ Lyon, Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre Léon Bérard, Centre de Recherche en Cancérologie de Lyon, Lyon, 69434, France,Hospices Civils de Lyon, France
| | - Birke Bartosch
- Univ Lyon, Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre Léon Bérard, Centre de Recherche en Cancérologie de Lyon, Lyon, 69434, France,Corresponding author. Address: Cancer Research Center Lyon, 151 cours Albert Thomas, 69434 Lyon, France; Tel.: 0033472681975, fax: 0033472681971
| |
Collapse
|
7
|
Batool M, Fayyaz H, Alam MR. Asymmetric Opening of Mitochondrial Permeability Transition Pore in Mouse Brain Hemispheres: A Link to the Mitochondrial Calcium Uniporter Complex. BRAZ J PHARM SCI 2022. [DOI: 10.1590/s2175-97902022e20007] [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: 11/22/2022] Open
|
8
|
Faroque MO, Islam SF, Hadiuzzaman KM, Islam MN, Alam MR, Hossain RM, Salahuddin AZ, Rahman M. A Middle-Aged Woman Presented with Catastrophic Anti-phospholipid Syndrome in Nephrology Department of BSMMU. Mymensingh Med J 2022; 31:267-271. [PMID: 34999714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A life threatening rare condition called catastrophic antiphospholipid syndrome leading to multiple organ failure is characterized by vascular thrombosis in the presence of anti-phospholipid antibody which often appear as a medical emergency. Antiphospholipid antibody syndrome whether primary or secondary cause thromboembolic manifestation resulting recurrent fetal loss, but catastrophic antiphospholipid antibody syndrome may not present in such a way, rather multi-system involvement occurs within a short period of time. We would like to present a case of 50 years old female who is hypertensive, non-diabetic, a known case of hypothyroidism for two years, who was admitted to our hospital after developing fever for 7 days and black discoloration of lateral three fingers of left hand for short period of time. The patient had no medical problems and had been in her usual state of health until 7 days before admission. Patient is anaemic and found to have severe renal failure. She was found high titer antiphospholipid antibody both IgM and IgG positive and anti-cardiolipin antibody positive. Her routine investigations revealed very high neutrophilic leukocytosis, high acute phase reactant, urinary findings revealed no active sediment; we thought that our patient might have sepsis that may trigger catastrophic antiphospholipid syndrome. Multi-disciplinary consultation gave us valuable opinion. Considering her septicemia, she was given broad spectrum antibiotic. Anticoagulation was given with unfractionated heparin followed by warfarin and as an immunosuppressive protocol methylprednisolone followed by prednisolone along with pulse cyclophosphamide was given. Treatment option with plasma pheresis and monoclonal antibody was not attempted, but she was given several session of hemodialysis, within a few days her biochemical parameters improved. Severe renal failure in this patient may be explained by septicemia or thrombotic micro-angiopathy that was reversed with anti-coagulation or proper antibiotic. Amputation of three digit of left hand was done by orthopedic surgeon but unfortunately two weeks after admission the patient expired due to sudden stroke.
Collapse
Affiliation(s)
- M O Faroque
- Dr Md Omar Faroque, Associate Professor, Department of Nephrology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
| | | | | | | | | | | | | | | |
Collapse
|
9
|
Kar S, Alam MR, Alam SK, Wadud MA, Ibrahim M, Rahman H, Ahammed SU, Hossain ME. Early Detection of Acute Kidney Injury by Neutrophil Gelatinase Associated Lipocalin in Patients Undergoing Coronary Artery Bypass Grafting with Cardiopulmonary Bypass. Mymensingh Med J 2021; 30:1051-1059. [PMID: 34605476] [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
Neutrophil Gelatinase-Associated Lipocalin (NGAL) is rapidly released by renal tubules after injury, potentially allowing early identification of acute kidney injury (AKI) after cardiac surgery. However, the diagnostic performance of NGAL has varied widely in clinical studies and it remains unknown what factors modify the relationship between NGAL and AKI. The main objective of the study was to determine the efficacy of NGAL in early detection of AKI among the CABG patients undergoing cardiopulmonary bypass (CPB). This prospective observational study was conducted in the Department of Nephrology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh in collaboration with the Department of Biochemistry, BSMMU among 42 patients admitted into the Department of Cardiac Surgery, Ibrahim Cardiac Hospital and Research Institute, Dhaka Bangladesh from July 2014 to June 2015. For the measurement of NGAL, urine samples were obtained before surgery and 6 hours after commencement of CPB. Serum creatinine was measured preoperatively and 6, 24 and 48 hours postoperatively. Increase in the serum creatinine level at 6, 24 and 48 hours after surgery was used to analyze the diagnostic value of urinary NGAL. In this study 42 CABG patients with no known renal insufficiency planned to have CPB were included. Receiver-operator characteristic (ROC) was constructed by using NGAL, which gave a cut off value of ≥185.90ng/ml. Eight patients were AKI positive among them 6(75.0%) patients were NGAL positive and 2(25.0%) were NGAL negative. Diagnosis of AKI was delayed by 24-48 hours by serum creatinine measurement. This study has demonstrated that level of urinary NGAL concentration at 6 hours post CPB increased before the increase of serum creatinine level and NGAL is an early predictor of AKI in adult cardiac surgical patients. The early detection of renal injury by NGAL may allow earlier intervention in patients with high risk for AKI.
Collapse
Affiliation(s)
- S Kar
- Dr Shubharthi Kar, Assistant Professor, Department of Nephrology, Sylhet MAG Osmani Medical College, Sylhet, Bangladesh; E-mail:
| | | | | | | | | | | | | | | |
Collapse
|
10
|
Ali SG, Shehwar D, Alam MR. [Mitoxantrone Inhibits FMLP-Induced Degenerative Changes in Human Neutrophils]. Mol Biol (Mosk) 2021; 55:858-869. [PMID: 34671008 DOI: 10.31857/s0026898421050025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 01/15/2021] [Indexed: 06/13/2023]
Abstract
Neutrophils fight with invading pathogens through various mechanisms including degranulation, phagocytosis, and the release of neutrophil extracellular traps (NETs). This study aimed to determine the impact of a synthetic formyl-peptide (FMLP) on human neutrophils in vitro, and to determine the role of mitoxantrone (MTX), a pharmacological blocker of mitochondrial Ca^(2+) Uniporter (MCU), on FMLP-induced alterations. Isolated neutrophils and a whole-blood preparation of neutrophils were pre-treated with MTX and then stimulated with FMLP. Field's-stained smears and brightfield microscopy were employed for morphological characterization and quantification of neutrophils. The release of cell-free DNA (cfDNA) was also measured for determining neutrophil damage. Our data demonstrated degenerative changes in neutrophils and a greater cfDNA release upon stimulation with FMLP which was negatively associated with the presence of resting platelets in whole blood preparation. Interestingly, MTX pre-treatment significantly reduced FMLP-triggered neutrophil damage and cfDNA release. Metformin, a known inhibitor of NETs formation, also decreased the FMLP-induced changes in neutrophils. In addition to confirming the degenerative potential of FMLP, this study reveals a novel contribution of MCU in regulating FMLP-induced morphological alterations in human neutrophils.
Collapse
Affiliation(s)
- S G Ali
- Department of Biochemistry, Quaid-i-Azam University, Islamabad, 45320 Pakistan
| | - D Shehwar
- Department of Biochemistry, Quaid-i-Azam University, Islamabad, 45320 Pakistan
| | - M R Alam
- Department of Biochemistry, Quaid-i-Azam University, Islamabad, 45320 Pakistan
| |
Collapse
|
11
|
Gouriou Y, Alam MR, Harhous Z, Da Silva CC, Baetz D, Badawi S, Lefai E, Rieusset J, Durand A, Harisseh R, Gharib A, Ovize M, Bidaux G. Addendum: Gouriou et al. ANT2-Mediated ATP Import into Mitochondria Protects against Hypoxia Lethal Injury. Cells 2020, 9, 2542. Cells 2021. [PMCID: PMC8471286 DOI: 10.3390/cells10092171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The authors and the Cells Editorial Office would like to add the section “Materials and Methods”, which was missing in the original version [...]
Collapse
Affiliation(s)
- Yves Gouriou
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
- Correspondence: (Y.G.); (G.B.)
| | - Muhammad Rizwan Alam
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
- Department of Biochemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Zeina Harhous
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
- Gilbert and Rose-Marie Chagoury, School of Medicine, Lebanese American University, Byblos 4M8F+8X, Lebanon
| | - Claire Crola Da Silva
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Delphine Baetz
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Sally Badawi
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Etienne Lefai
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Jennifer Rieusset
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Annie Durand
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Rania Harisseh
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Abdallah Gharib
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Michel Ovize
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Gabriel Bidaux
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
- Correspondence: (Y.G.); (G.B.)
| |
Collapse
|
12
|
Bibi S, Ahmad F, Alam MR, Ansar M, Yeou KS, Wahedi HM. Lapachol-Induced Upregulation of Sirt1/Sirt3 is linked with Improved Skin Wound Healing in Alloxan-induced Diabetic Mice. Iran J Pharm Res 2021; 20:419-430. [PMID: 34903998 PMCID: PMC8653681 DOI: 10.22037/ijpr.2021.112722.13914] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Timely repair of damaged skin is very important to maintain the integrity and homeostasis of skin, but the wound healing process is compromised in diabetic patients due to several extrinsic and intrinsic factors thus lead to leg amputation and death eventually. Sirtuins, a family of seven conserved proteins are known to be associated with pathophysiological processes of the skin. The most important among them are sirt1and sirt3 involved in cell regeneration and cell survival. Naphthoquinone derivatives have a wide range of therapeutic properties, but the potential diabetic wound healing activity of lapachol has not been identified yet. The present study thus aimed to investigate the wound healing effects of lapachol in a diabetic mouse model. Diabetic wounded mice were divided into 3 groups; vehicle, lapachol 0.05%, and lapachol 0.1%. Skin samples collected from diabetic wounded mice on different time points after treatment for 10 consecutive days were subjected to downstream analysis by western blot, ELISA and histology. Lapachol treatment was found to enhance the expression of sirt1/sirt3 and other proteins involved in cell migration and blood vessel formation. The tissue development rate was increased by lapachol treatment with better collagen deposition. Interestingly, lapachol treatment also gave rise to a high concentration of growth factors resulting in speedy and timely recovery of injured skin. In summary, our findings suggest that lapachol promotes efficient wound healing in a diabetic mouse model by increasing the expression of sirt1 and sirt3 and other proteins related to wound repair and skin regeneration including α-PAK, RAC1/CDC42, VEGF and growth factors viz PDGF and VEGF. This research work finds a novel potential activator of sirtuins in the form of lapachol and depicts the role of activated sirtuins in diabetic wound healing.
Collapse
Affiliation(s)
- Shaheen Bibi
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam, University, Islamabad, 45320, Pakistan.
| | - Fayyaz Ahmad
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam, University, Islamabad, 45320, Pakistan.
| | - Muhammad Rizwan Alam
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam, University, Islamabad, 45320, Pakistan.
| | - Muhammad Ansar
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam, University, Islamabad, 45320, Pakistan.
| | - Kim Sun Yeou
- College of Pharmacy, Gachon University, #191, Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea.
| | - Hussain Mustatab Wahedi
- Department of Biological Sciences, National University of Medical Sciences, C/O Military Hospital, The Mall Road, 46000 Rawalpindi, Pakistan.
| |
Collapse
|
13
|
Gouriou Y, Alam MR, Harhous Z, Crola Da Silva C, Baetz DB, Badawi S, Lefai E, Rieusset J, Durand A, Harisseh R, Gharib A, Ovize M, Bidaux G. ANT2-Mediated ATP Import into Mitochondria Protects against Hypoxia Lethal Injury. Cells 2020; 9:cells9122542. [PMID: 33255741 PMCID: PMC7760820 DOI: 10.3390/cells9122542] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 11/12/2020] [Accepted: 11/24/2020] [Indexed: 12/16/2022] Open
Abstract
Following a prolonged exposure to hypoxia–reoxygenation, a partial disruption of the ER-mitochondria tethering by mitofusin 2 (MFN2) knock-down decreases the Ca2+ transfer between the two organelles limits mitochondrial Ca2+ overload and prevents the Ca2+-dependent opening of the mitochondrial permeability transition pore, i.e., limits cardiomyocyte cell death. The impact of the metabolic changes resulting from the alteration of this Ca2+crosstalk on the tolerance to hypoxia–reoxygenation injury remains partial and fragmented between different field of expertise. >In this study, we report that MFN2 loss of function results in a metabolic switch driven by major modifications in energy production by mitochondria. During hypoxia, mitochondria maintain their ATP concentration and, concomitantly, the inner membrane potential by importing cytosolic ATP into mitochondria through an overexpressed ANT2 protein and by decreasing the expression and activity of the ATP hydrolase via IF1. This adaptation further blunts the detrimental hyperpolarisation of the inner mitochondrial membrane (IMM) upon re-oxygenation. These metabolic changes play an important role to attenuate cell death during a prolonged hypoxia–reoxygenation challenge.
Collapse
Affiliation(s)
- Yves Gouriou
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
- Correspondence: (Y.G.); (G.B.)
| | - Muhammad Rizwan Alam
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
- Department of Biochemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Zeina Harhous
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
- Gilbert and Rose-Marie Chagoury, School of Medicine, Lebanese American University, Byblos 4M8F+8X, Lebanon
| | - Claire Crola Da Silva
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Delphine Baetz Baetz
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Sally Badawi
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Etienne Lefai
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Jennifer Rieusset
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Annie Durand
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Rania Harisseh
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Abdallah Gharib
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Michel Ovize
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Gabriel Bidaux
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
- Correspondence: (Y.G.); (G.B.)
| |
Collapse
|
14
|
Ahmad F, Bibi S, Kang M, Anees M, Ansar M, Alam MR, Kim SY, Wahedi HM. Naphthoquinones from Handroanthus impetiginosus promote skin wound healing through Sirt3 regulation. Iran J Basic Med Sci 2020; 23:1139-1145. [PMID: 32963735 PMCID: PMC7491501 DOI: 10.22038/ijbms.2020.43706.10275] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Objective(s): Lapachone is a natural naphthoquinone-derived compound found in Tabebuia avellanedae. It is well-known for its analgesic, anti-inflammatory, anti-microbial, diuretic, and anti-cancerous effects. However, the wound-healing effects of this compound are not known yet. The aim of this study was to investigate the wound healing activity of naphthoquinones (α-lapachone and β-lapachone) from Handroanthus impetiginosus. Materials and Methods: Expression of Sirt3, migration-related proteins (Rac1, Cdc42, α-Pak) and angiogenesis-related protein of vascular endothelial growth factor (VEGF) was monitored using western blot analysis. Blood vessel formation and tissue development were monitored by angiogenesis assay and hematoxylin & eosin (H & E) staining, respectively on mouse skin tissue samples. Both α-lapachone and β-lapachone increased Sirt3 expression in vivo, but only β-lapachone increased Sirt3 expression in vitro. Results: Both the compounds accelerated wound healing in cultured skin cells as well as mouse skin; however, β-lapachone was more effective at lower concentrations. Both of the compounds increased the expression of migration-related proteins both in vitro and in vivo. Similarly, α-lapachone and β-lapachone increased VEGF expression, tissue development and blood vessel formation in mouse skin. Conclusion: These findings indicated that α-lapachone and β-lapachone are novel Sirt3 activators, and Sirt3 has a role in wound healing. Thus, Sirt3 and its regulators come out as a novel target and potential drug candidates, respectively in the important field of cutaneous wound healing.
Collapse
Affiliation(s)
- Fayyaz Ahmad
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, 45320 Islamabad, Pakistan
| | - Shaheen Bibi
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, 45320 Islamabad, Pakistan
| | - Mincheol Kang
- College of Pharmacy, Gachon University, 191 Hambakmaero, Incheon, South Korea
| | - Mariam Anees
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, 45320 Islamabad, Pakistan
| | - Muhammad Ansar
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, 45320 Islamabad, Pakistan
| | - Muhammad Rizwan Alam
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, 45320 Islamabad, Pakistan
| | - Sun Yeou Kim
- College of Pharmacy, Gachon University, 191 Hambakmaero, Incheon, South Korea
| | - Hussain Mustatab Wahedi
- Department of Biological Sciences, National University of Medical Sciences, C/O Military Hospital, Mall Road Rawalpindi, Pakistan
| |
Collapse
|
15
|
Ishtifaq A, Qureshi S, Farooq S, Kashoo ZA, Malik MZ, Alam MR, Wani SA, Bhat MA, Hussain MI, Dar RA, Shah SM. Genotyping and antibiotic resistance patterns of Campylobacter fetus subsp.venerealis from cattle farms in India. Lett Appl Microbiol 2020; 71:627-636. [PMID: 32867004 DOI: 10.1111/lam.13378] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/14/2020] [Accepted: 08/15/2020] [Indexed: 11/27/2022]
Abstract
Bovine genital campylobacteriosis caused by Campylobacter fetus subsp. venerealis (Cfv) is of considerable economic importance to the cattle industry worldwide. Cfv causes syndrome of temporary infertility in female cattle, early embryonic mortality, aberrant oestrus cycles, delayed conception, abortions and poor calving rates. In the present study, a total of 200 samples obtained from vaginal swabs, cervicovaginal mucous (CVM), preputial washes and semen straws were investigated that were obtained from organized cattle farm of MLRI, Manasbal and unorganized sectors. Out of a total of 200 samples, 49 (47·57%) vaginal swabs, 1 (3·33%) preputial wash and 8 (25%) carried out CVM samples were positive for Cfv, whereas none of the semen straws were positive for Cfv. A total of eleven isolates of Cfv were recovered. PFGE (Pulse field gel electrophoresis) analysis revealed four different pulsotypes (I-IV) circulating in the screened farms. A common pulsotype circulating among farms could not be established. Insertion element (ISCfe1), a 233 bp amplicon of Cfv, was sequenced and the sequence was deposited in GenBank (accession no: MK475662).
Collapse
Affiliation(s)
- A Ishtifaq
- Infectious Disease Laboratory, Division of Veterinary Microbiology & Immunology, Faculty of Veterinary Microbiology & Immunology, SKUAST-K, Srinagar, J&K, India
| | - S Qureshi
- Infectious Disease Laboratory, Division of Veterinary Microbiology & Immunology, Faculty of Veterinary Microbiology & Immunology, SKUAST-K, Srinagar, J&K, India
| | - S Farooq
- Infectious Disease Laboratory, Division of Veterinary Microbiology & Immunology, Faculty of Veterinary Microbiology & Immunology, SKUAST-K, Srinagar, J&K, India
| | - Z A Kashoo
- Infectious Disease Laboratory, Division of Veterinary Microbiology & Immunology, Faculty of Veterinary Microbiology & Immunology, SKUAST-K, Srinagar, J&K, India
| | - Md Z Malik
- School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi, India
| | - M R Alam
- Department of Medical Genetics, School of Medicine, Keimyung University, Daegu, Republic of Korea
| | - S A Wani
- Infectious Disease Laboratory, Division of Veterinary Microbiology & Immunology, Faculty of Veterinary Microbiology & Immunology, SKUAST-K, Srinagar, J&K, India
| | - M A Bhat
- Infectious Disease Laboratory, Division of Veterinary Microbiology & Immunology, Faculty of Veterinary Microbiology & Immunology, SKUAST-K, Srinagar, J&K, India
| | - M I Hussain
- Infectious Disease Laboratory, Division of Veterinary Microbiology & Immunology, Faculty of Veterinary Microbiology & Immunology, SKUAST-K, Srinagar, J&K, India
| | - R A Dar
- Mountain Livestock Research Institute (MLRI) Manasbal, Faculty of Veterinary Microbiology & Immunology, SKUAST-K, Srinagar, J&K, India
| | - S M Shah
- SMS, KVK, SKUAST-K, Srinagar, J&K, India
| |
Collapse
|
16
|
Asha MT, Akter S, Tabassum R, Rahaman MS, Reza-Ul-Haq KM, Ara S, Alam MR, Rahman MZ, Rashid MS. A Study to find out the Correlation between Handgrip Strength and Hand Breadth of Bangladeshi Male Cricket Batsman. Mymensingh Med J 2020; 29:169-176. [PMID: 31915354] [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: 06/10/2023]
Abstract
This cross sectional analytical type of study was conducted at department of Anatomy, Dhaka Medical College, Dhaka, Bangladesh from July 2015 to June 2016 on 50 adult Bangladeshi male sprinters (Group A) and 50 adult Bangladeshi male cricket batsman (Group B). Sample collection was done by convenient purposive sampling technique. History of any injury of hand during playing was excluded to construct standard measurement. Hand breadth was measured with the help of slide calipers. Hand grip strength Dynamometer was used to measure the hand grip strength. Paired Student's 't' test, unpaired student's 't' test and Pearson's correlation coefficient test were done for statistical analysis of the result. The aim of the present study was to determine hand breadth and average hand grip strength of Bangladeshi male cricket batsman to find out correlation between them that may be used as a baseline for other professions as well for future research in our country. The mean right and left hand grip strength was significantly higher in the cricket batsman than in the sprinters. The mean right and left hand breadth was found to be significantly higher in the cricket batsman than in the sprinters. Right and left hand grip strength showed significant positive correlation with hand breadth in both hand. The study findings suggest that regular physical exercise and training increase hand grip strength.
Collapse
Affiliation(s)
- M T Asha
- Dr Moushumi Taher Asha, Assistant Professor, Department of Anatomy, Bashundhara Ad-din Medical College, Dhaka, Bangladesh
| | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Salahuddin AZ, Alam MR, Hossain RM, Feroz S, Zannat H, Mondal MC, Roy AS, Robbani MG, Uddin MB, Kadir MS. Renal Involvement as a Presenting Feature of Multiple Myeloma. Mymensingh Med J 2019; 28:527-535. [PMID: 31391422] [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: 06/10/2023]
Abstract
Renal involvement may be the presenting feature in a vast majority of patients with multiple myeloma and is one of the key for clinical manifestations of symptomatic multiple myeloma. The purpose of the study was to find out the pattern of renal involvement at the time of presentation of multiple myeloma and to explore its association with clinical, laboratory and pathologic features of these cases. This cross sectional study was conducted in the Department of Nephrology at Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh from February 2016 to September 2017. Forty seven (47) patients of newly diagnosed multiple myeloma having renal involvement were included in the study. Multiple myeloma was diagnosed as per criteria proposed by the International Myeloma Working Group, 2003. Renal involvement was considered to be present when any one of proteinuria, microscopic haematuria, renal impairment or urinary tract infection (UTI) was found in the patient. Renal biopsy was done in suitable patients under ultrasound guidance after taking informed written consent. The pattern of renal involvement was detected and status of renal function was assessed and its clinical, laboratory and pathologic associations were analyzed. Data were managed by using computer based software, the Statistical Package for Social Sciences (SPSS) version 23 (IBM Corp.). Median age at presentation was 59 years with the range of 37-76 years. Female (53.2%) was slightly predominant than male (46.8%) and male to female ratio was 1:1.14. Renal impairment, microscopic haematuria, proteinuria, nephrotic range proteinuria, urinary Bence Jones protein and UTI were found in 70%, 19%, 79%, 25%, 19% and 17% of patients respectively. Median serum creatinine and proteinuria were 256μmol/l and 1.24gm/day. Hypercalcaemia and Bence Jones proteinuria were detected in 36% and 27% of patients respectively with renal impairment which were statistically significant. The precipitating factors for renal impairment were NSAIDs use (67%), hyperuricaemia (49%), hypercalcaemia (36%), dehydration (27%), UTI (18%) and no identifiable factor (3%). Dialysis was required in 15% new myeloma patient. Renal biopsy and histopathological examination revealed myeloma cast nephropathy (30%), amyloidosis (30%), glomerulosclerosis (chronic kidney disease) (20%), monoclonal immunoglobulin deposition disease (MIDD) (10%) and interstitial nephritis with fibrosis (10%). Renal involvement was a common and severe complication of multiple myeloma. Renal impairment was strongly associated with hypercalcaemia, NSAIDs use, hyperuricaemia, Bence Jones proteinuria etc.
Collapse
Affiliation(s)
- A Z Salahuddin
- Dr Abu Zafor Md Salahuddin, Registrar, Department of Nephrology, Mymensingh Medical College Hospital, Mymensingh, Bangladesh; E-mail:
| | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Hossain MS, Alam MR, Hasan MI, Sharif JU, Kabir MA, Islam MA, Alam AJ, Sultana T, Akter J. Prevalence of Serological Markers of Viruses in Patients of Acute Hepatitis. Mymensingh Med J 2019; 28:278-285. [PMID: 31086138] [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
Infections due to hepatitis A (HAV), hepatitis B (HBV), hepatitis C (HCV) and hepatitis E (HEV) viruses are the major causes of hepatitis and are associated with significant morbidity and mortality in developing countries like Bangladesh. The aim of this study was to assess the distribution pattern of serological markers in patients of acute viral hepatitis. This was a hospital based observational cross sectional study among purposively selected 107 patients admitted with acute viral hepatitis in the Department of Medicine, Mymensingh Medical College Hospital, Mymensingh, Bangladesh from April 2017 to September 2017. Data were collected by face-to-face interview of the patients, clinical assessment and investigations of biochemical and serological parameters using a structured questionnaire. Descriptive analysis was done using the analytic software SPSS version 21.0. The mean age of the patients was 33.35±12.97 years. Majority was male (68.2%), Muslim (87.9%), married (72.9%) and came from urban area (63.6%) with different level of educational qualifications. The prevalence of viral hepatitis is higher in male (68.22%) than female (31.78%). The common clinical presentations were dark coloured urine (100.0%), yellow colouration of the sclera (100.0%), anorexia (90.6%), nausea/vomiting (79.4%) and abdominal pain (68.2%). Of the 107 patients, 51.40% (n=55) had acute viral E hepatitis, 36.40% (n=39) had acute viral B hepatitis, 12.15% (n=13) had acute viral A hepatitis. Mixed infection with both hepatitis E and A viruses was 1.87% (n=2). HEV and HBV are common in relatively older age while HAV is common in relatively younger age to cause acute viral hepatitis. The study revealed a high prevalence of HEV followed by HBV and HAV in the Bangladeshi population suspected of having suffered from acute viral hepatitis.
Collapse
Affiliation(s)
- M S Hossain
- Dr Md Sohrab Hossain, IMO (Medicine), Mymensingh Medical College Hospital (MMCH), Mymensingh, Bangladesh; E-mail: sohrab
| | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Fattahi Z, Sheikh TI, Musante L, Rasheed M, Taskiran II, Harripaul R, Hu H, Kazeminasab S, Alam MR, Hosseini M, Larti F, Ghaderi Z, Celik A, Ayub M, Ansar M, Haddadi M, Wienker TF, Ropers HH, Kahrizi K, Vincent JB, Najmabadi H. Biallelic missense variants in ZBTB11 can cause intellectual disability in humans. Hum Mol Genet 2019; 27:3177-3188. [PMID: 29893856 DOI: 10.1093/hmg/ddy220] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 06/04/2018] [Indexed: 11/12/2022] Open
Abstract
Exploring genes and pathways underlying intellectual disability (ID) provides insight into brain development and function, clarifying the complex puzzle of how cognition develops. As part of ongoing systematic studies to identify candidate ID genes, linkage analysis and next-generation sequencing revealed Zinc Finger and BTB Domain Containing 11 (ZBTB11) as a novel candidate ID gene. ZBTB11 encodes a little-studied transcription regulator, and the two identified missense variants in this study are predicted to disrupt canonical Zn2+-binding residues of its C2H2 zinc finger domain, leading to possible altered DNA binding. Using HEK293T cells transfected with wild-type and mutant GFP-ZBTB11 constructs, we found the ZBTB11 mutants being excluded from the nucleolus, where the wild-type recombinant protein is predominantly localized. Pathway analysis applied to ChIP-seq data deposited in the ENCODE database supports the localization of ZBTB11 in nucleoli, highlighting associated pathways such as ribosomal RNA synthesis, ribosomal assembly, RNA modification and stress sensing, and provides a direct link between subcellular ZBTB11 location and its function. Furthermore, given the report of prominent brain and spinal cord degeneration in a zebrafish Zbtb11 mutant, we investigated ZBTB11-ortholog knockdown in Drosophila melanogaster brain by targeting RNAi using the UAS/Gal4 system. The observed approximate reduction to a third of the mushroom body size-possibly through neuronal reduction or degeneration-may affect neuronal circuits in the brain that are required for adaptive behavior, specifying the role of this gene in the nervous system. In conclusion, we report two ID families segregating ZBTB11 biallelic mutations disrupting Zn2+-binding motifs and provide functional evidence linking ZBTB11 dysfunction to this phenotype.
Collapse
Affiliation(s)
- Zohreh Fattahi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Taimoor I Sheikh
- Molecular Neuropsychiatry & Development (MiND) Lab, Campbell Family Mental Health Research Institute, Center for Addiction and Mental Health, Toronto, ON, Canada
| | - Luciana Musante
- Department of Human Molecular Genetics, Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Memoona Rasheed
- Department of Biochemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | | | - Ricardo Harripaul
- Molecular Neuropsychiatry & Development (MiND) Lab, Campbell Family Mental Health Research Institute, Center for Addiction and Mental Health, Toronto, ON, Canada
| | - Hao Hu
- Department of Human Molecular Genetics, Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Somayeh Kazeminasab
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | | | - Masoumeh Hosseini
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Farzaneh Larti
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Zhila Ghaderi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Arzu Celik
- Department of Molecular Biology and Genetics, Bogazici University, Istanbul, Turkey
| | - Muhammad Ayub
- Department of Psychiatry, Queen's University, Kingston, ON, Canada
| | - Muhammad Ansar
- Department of Biochemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Mohammad Haddadi
- Department of Biology, Faculty of Science, University of Zabol, Zabol, Iran
| | - Thomas F Wienker
- Department of Human Molecular Genetics, Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Hans Hilger Ropers
- Department of Human Molecular Genetics, Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Kimia Kahrizi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - John B Vincent
- Molecular Neuropsychiatry & Development (MiND) Lab, Campbell Family Mental Health Research Institute, Center for Addiction and Mental Health, Toronto, ON, Canada
| | - Hossein Najmabadi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| |
Collapse
|
20
|
Sarkar AM, Akhter S, Khan MR, Saha M, Alam MR, Ghosh CK, Ahmed DS, Miah AR, Roy PK. Evaluation of Duodenal Eosinophil Count in Adult Patients with Functional Dyspepsia. Mymensingh Med J 2019; 28:150-156. [PMID: 30755564] [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
Several mechanisms have been proposed to explain the symptoms of functional dyspepsia but actual pathogenesis is still poorly understood. Recent studies support duodenal abnormality to be the most important causal link to explain symptoms and to understand abnormal pathophysiology of functional dyspepsia. The aim of this prospective observational study is to compare eosinophil count in duodenal mucosa between patients with functional dyspepsia and control subjects without dyspepsia and was done at the department of Gastroenterology, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh from December 2015 to December 2016. Total 42 patients of functional dyspepsia based on Bangla validated version of ROME III criteria and 42 controls who were referred for upper gastrointestinal endoscopy for reasons other than dyspepsia were included. Biopsy specimens were collected from the second part (D2) of the duodenum of all participants. Eosinophil count was quantitatively evaluated by hematoxylin and eosin staining and expressed in numbers per 5 HPF. Significantly increased duodenal eosinophil count was found in functional dyspepsia group than non dyspeptic patients (22.78±08.78 vs. 14.90±10.70, p=0.001). Higher duodenal eosinophil count was found in patients with postprandial distress syndrome. Increased duodenal eosinophil count was found in patient of functional dyspepsia. It requires further large scale multicenter studies to establish duodenal eosinophilia as a biomarker of functional dyspepsia.
Collapse
Affiliation(s)
- A M Sarkar
- Dr Md Abdul Mumit Sarkar, Resident, Department of Gastroenterology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh
| | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Parveen S, Karim AB, Rahman SM, Alam MR, Ahmed DS, Rahman MZ. Celiac Disease in Children with Chronic Diarrhoea Attending At Paediatric Gastroenterology and Nutrition Department of BSMMU. Mymensingh Med J 2018; 27:820-825. [PMID: 30487500] [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
This descriptive, cross sectional study was conducted at Bangabandhu Sheikh Mujib Medical University from July 2012 to July 2015 to see the occurrence of celiac disease in children with chronic diarrhea. A total of 62 children (age <18 years) attending the Paediatric Gastroenterology and Nutrition department of BSMMU with chronic diarrhoea were enrolled for the study. Mean age of studied children was 7.87±4.67 years. Ratio of the male and female was 2.27:1. Maximum (66.1%) children came from middle income class family. Out of 62 children with chronic diarrhea, 35.5% (22) were positive for IgA anti-tTG of whom female were 11.3% and male 24.2%. Mean duration of diarrhoea was 44.07±21.77 months in serology positive patients and 34.49±30.52 months in serology negative patients. The age group, 10-14 year showed the highest (50%) prevalence of positive anti-tTG. In the tTG positive group mean Hb was 9.6±1.14gm/dl and which is lower than that in tTG negative group (11.7±1.47gm/dl). Among 22 seropositive patients, histological changes compatible with CD were found in 19 (86.3%) cases and normal in 3 cases. Histological changes were of 3c category of Marsh was found in 3(15.8%) cases, 3b in 4(21.1%) cases and 3a in 12(63.2%) cases. In conclusion, Screening for celiac disease may be included in diagnostic tests for evaluating chronic diarrhoea in children.
Collapse
Affiliation(s)
- S Parveen
- Dr Shohely Parveen, Medical Officer, Department of Paediatrics, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh
| | | | | | | | | | | |
Collapse
|
22
|
Faroque MO, Hadiuzzaman KM, Islam SF, Hossain RM, Islam MN, Ahmed AH, Ahmed PI, Alam MR. Presentation and Treatment Outcomes of 100 Lupus Nephritis Patients: Single Center Study. Mymensingh Med J 2016; 25:308-315. [PMID: 27277365] [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
Over a period of 3 years (January 2011 to December 2013) 100 cases of Lupus nephritis patients admitted in nephrology department of Bangabandhu Sheikh Mujib Medical University (BSMMU) were evaluated. Their clinical characteristics, biochemical parameters, renal histology according to WHO classification were categorized and their treatment modalities and outcome was observed. Among 100 patients, 84 were female and 16 were male, with F:M ratio 5:1. Mean age of female were 23±4 years and male were 29±4 years, mean BP in male was systolic 135±8 mmHg, diastolic 80±9mmHg and in female systolic was 130±7mmHg, diastolic 75±6 mmHg, mean Serum Creatinine for male was 180±12μmol/L and mean serum creatinine in female was 170±20μmol/L. Sixty five percent (65%) patient showed extra renal manifestation. All patients presented with proteinuria, among them 45% were nephrotic presentation, 25% patients presented with acute nephritic illness, 15% were nephritic nephrotic, 10% patients had rapidly progressing glomerulonephritis (RPGN), and 5% were with asymptomatic proteinuria. Renal biopsy of 100 patient according to WHO classification showed class I - 5%, class II - 20%, class III - 26%, class IV - 35%, class V - 8%, class VI - 6%. Immunosuppressive protocol used was prednisolone and cyclophorphamide in the majority of patients in class III to class VI LN patients. Few patients received prednisolone and mycophenolate mofetil. Twenty four percent (24%) patients were in complete remission during this study period and 12% developed end stage renal disease (ESRD). Seventy six percent (76%) patients passed through various stages of CKD, majority of them were in CKD stage IV and stage III, and few were in CKD stage I and stage II. About 70% of the participants had suffered from one or more complications, where majority were infections. Infections and renal failure were the leading cause of death in our study.
Collapse
Affiliation(s)
- M O Faroque
- Dr Md Omar Faroque, Assistant Professor, Department of Nephrology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Shahbagh, Dhaka, Bangladesh
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Theurey P, Tubbs E, Vial G, Jacquemetton J, Bendridi N, Chauvin MA, Alam MR, Le Romancer M, Vidal H, Rieusset J. Mitochondria-associated endoplasmic reticulum membranes allow adaptation of mitochondrial metabolism to glucose availability in the liver. J Mol Cell Biol 2016; 8:129-43. [DOI: 10.1093/jmcb/mjw004] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 11/01/2015] [Indexed: 12/20/2022] Open
|
24
|
Gomez L, Thiebaut PA, Paillard M, Ducreux S, Abrial M, Crola Da Silva C, Durand A, Alam MR, Van Coppenolle F, Sheu SS, Ovize M. The SR/ER-mitochondria calcium crosstalk is regulated by GSK3β during reperfusion injury. Cell Death Differ 2016; 22:1890. [PMID: 26434983 DOI: 10.1038/cdd.2015.118] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
|
25
|
Ferrera R, Benhabbouche S, Da Silva CC, Alam MR, Ovize M. Delayed low pressure at reperfusion: A new approach for cardioprotection. J Thorac Cardiovasc Surg 2015; 150:1641-8.e2. [PMID: 26384749 DOI: 10.1016/j.jtcvs.2015.08.053] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [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: 06/10/2015] [Revised: 08/13/2015] [Accepted: 08/19/2015] [Indexed: 11/19/2022]
Abstract
OBJECTIVES The aims of this study were to evaluate whether the delayed application of low-pressure reperfusion could reduce lethal reperfusion injury and whether the inhibition of the opening of the mitochondrial permeability transition pore is involved in this protection. METHODS Isolated rat hearts (n = 120) underwent 40 minutes of global ischemia followed by 60 minutes of reperfusion. Hearts were randomly assigned to the following groups: control, postconditioning (comprising 2 episodes of 30 seconds of ischemia and 30 seconds of reperfusion), and low-pressure reperfusion (using a reduction of perfusion pressure at 70 cm H2O for 10 minutes). In additional groups, postconditioning and low-pressure reperfusion were applied after a delay of 3, 10, and 20 minutes after the initial 40-minute ischemic insult. RESULTS As expected, infarct size (triphenyltetrazolium chloride staining) and lactate dehydrogenase release were significantly reduced in low-pressure reperfusion and postconditioning versus controls (P < .01), whereas functional parameters (coronary flow, rate pressure product) were improved (P < .01). Although delaying postconditioning by more than 3 minutes resulted in a loss of protection, low-pressure reperfusion still significantly reduced infarct size when applied as late as 20 minutes after reperfusion. This delayed low-pressure reperfusion protection was associated with an improved mitochondrial respiration, lower reactive oxygen species production, and enhanced calcium retention capacity, related to inhibition of permeability transition pore opening. CONCLUSIONS We demonstrated for the first time that low-pressure reperfusion can reduce lethal myocardial reperfusion injury even when performed 10 to 20 minutes after the initiation of reperfusion.
Collapse
Affiliation(s)
| | | | | | | | - Michel Ovize
- Université Lyon 1, Lyon, France; IHU OPERA and Service d'Explorations Fonctionnelles Cardiovasculaires and CIC de Lyon, Groupement Hospitalier Est, Hospices Civils of Lyon, Lyon, France
| |
Collapse
|
26
|
Bochaton T, Crola-Da-Silva C, Pillot B, Villedieu C, Ferreras L, Alam MR, Thibault H, Strina M, Gharib A, Ovize M, Baetz D. Inhibition of myocardial reperfusion injury by ischemic postconditioning requires sirtuin 3-mediated deacetylation of cyclophilin D. J Mol Cell Cardiol 2015; 84:61-9. [PMID: 25871830 DOI: 10.1016/j.yjmcc.2015.03.017] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [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: 11/05/2014] [Revised: 03/26/2015] [Accepted: 03/27/2015] [Indexed: 01/10/2023]
Abstract
RATIONALE How ischemic postconditioning can inhibit opening of the mitochondrial permeability transition pore (PTP) and subsequent cardiac myocytes death at reperfusion remains unknown. Recent studies have suggested that de-acetylation of cyclophilin D (CyPD) by sirtuin 3 (SIRT3) can modulate its binding to the PTP. OBJECTIVE The aim of the present study was to examine whether ischemic postconditioning (PostC) might activate SIRT3 and consequently prevent lethal myocardial reperfusion injury through a deacetylation of CyPD. METHODS AND RESULTS Using hypoxia-reoxygenation (H/R) in H9C2 cells, we showed that SIRT3 overexpression prevented CyPD acetylation, limited PTP opening and reduced cell death by 24%. In vitro modification of the CyPD acetylation status in MEFs by site-directed mutagenesis altered capacity of PTP opening by calcium. Calcium Retention Capacity (CRC) was significantly decreased with CyPD-KQ that mimics acetylated protein compared with CyPD WT (871 ± 266 vs 1193 ± 263 nmoles Ca(2+)/mg protein respectively). Cells expressing non-acetylable CyPD mutant (CyPD-KR) displayed 20% decrease in cell death compared to cells expressing CyPD WT after H/R. Correspondingly, in mice we showed that cardiac ischemic postconditioning could not reduce infarct size and CyPD acetylation in SIRT3 KO mice, and was unable to restore CRC in mitochondria as it is observed in WT mice. CONCLUSIONS Our study suggests that the increased acetylation of CyPD following myocardial ischemia-reperfusion facilitates PTP opening and subsequent cell death. Therefore ischemic postconditioning might prevent lethal reperfusion injury through an increased SIRT3 activity and subsequent attenuation of CyPD acetylation at reperfusion.
Collapse
Affiliation(s)
- T Bochaton
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France; Hospices Civils de Lyon, Hôpital Louis Pradel, Service d'Explorations Fonctionnelles Cardiovasculaires & CIC de Lyon, F-69394 Lyon, France
| | - C Crola-Da-Silva
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - B Pillot
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - C Villedieu
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - L Ferreras
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - M R Alam
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - H Thibault
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France; Hospices Civils de Lyon, Hôpital Louis Pradel, Service d'Explorations Fonctionnelles Cardiovasculaires & CIC de Lyon, F-69394 Lyon, France
| | - M Strina
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - A Gharib
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - M Ovize
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France; Hospices Civils de Lyon, Hôpital Louis Pradel, Service d'Explorations Fonctionnelles Cardiovasculaires & CIC de Lyon, F-69394 Lyon, France
| | - D Baetz
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France.
| |
Collapse
|
27
|
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.
Collapse
Affiliation(s)
- M A Habib
- Dr Md Ahsan Habib, Assistant Professor, Department of Neurology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Alam MR, Baetz D, Ovize M. Cyclophilin D and myocardial ischemia-reperfusion injury: a fresh perspective. J Mol Cell Cardiol 2015; 78:80-9. [PMID: 25281838 DOI: 10.1016/j.yjmcc.2014.09.026] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [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: 07/20/2014] [Revised: 09/23/2014] [Accepted: 09/25/2014] [Indexed: 01/06/2023]
Abstract
Reperfusion is characterized by a deregulation of ion homeostasis and generation of reactive oxygen species that enhance the ischemia-related tissue damage culminating in cell death. The mitochondrial permeability transition pore (mPTP) has been established as an important mediator of ischemia-reperfusion (IR)-induced necrotic cell death. Although a handful of proteins have been proposed to contribute in mPTP induction, cyclophilin D (CypD) remains its only bona fide regulatory component. In this review we summarize existing knowledge on the involvement of CypD in mPTP formation in general and its relevance to cardiac IR injury in specific. Moreover, we provide insights of recent advancements on additional functions of CypD depending on its interaction partners and post-translational modifications. Finally we emphasize the therapeutic strategies targeting CypD in myocardial IR injury. This article is part of a Special Issue entitled "Mitochondria: From Basic Mitochondrial Biology to Cardiovascular Disease".
Collapse
Affiliation(s)
- Muhammad Rizwan Alam
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - Delphine Baetz
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - Michel Ovize
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France; Hospices Civils de Lyon, Hôpital Louis Pradel, Service d'Explorations Fonctionnelles Cardiovasculaires & CIC de Lyon, F-69394 Lyon, France.
| |
Collapse
|
29
|
Zapater-Pereyra M, Gashugi E, Rousseau DPL, Alam MR, Bayansan T, Lens PNL. Effect of aeration on pollutants removal, biofilm activity and protozoan abundance in conventional and hybrid horizontal subsurface-flow constructed wetlands. Environ Technol 2014; 35:2086-94. [PMID: 24956803 DOI: 10.1080/09593330.2014.893024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The large area demand of constructed wetlands (CWs) is documented as a weak point that can be potentially reduced by applying active aeration. The aim of this study was, therefore, to understand the effects of aeration on the treatment performance, the biofilm activity, the protozoan population size and potential CW footprint reduction of different horizontal flow (HF) CW configurations. Two experimental periods were considered: a first period with low organic loading rate (OLR) and a second period with high OLR. Three HF CW configurations were compared: a conventional (control), an aerated and a hybrid CW (aerated followed by a non-aerated CW). The results obtained reinforced the competence of aerated CW for organic matter removal (81-89% of chemical oxygen demand) while for nitrogen elimination the control (19-24%) and hybrid (8-41%) systems performed better than the aerated system (-6% to 33%). Biofilm activity and protozoa abundance were distinctly higher at the inlet zones when compared with the outlet zones of all CWs, as well as in the aerated systems when compared with the non-aerated CWs. The protozoan abundance increased with an increase in the OLR and ciliates were found to be the dominant group. Overall, the active aeration highlighted the efficiency and stability of the CWs for organic matter removal and thus can be used as a promising tool to enhance microbial activity and grazing by protozoa; eventually reducing solid accumulation in the bed media. These beneficial effects contribute to reduce the CWs' area requirements.
Collapse
|
30
|
Abstract
Pancreatic β-cells are the only cells capable of lowering blood glucose by secreting insulin. The β-cell continuously adjusts its secretory activity to substrate availability in order to keep blood glucose levels within the physiological range--a process called metabolism-secretion coupling. Glucose is readily taken up by the β-cell and broken down into intermediates that fuel oxidative metabolism inside the mitochondria to generate ATP. The resulting increase in the ATP/ADP ratio causes closure of plasma membrane KATP channels, thereby depolarizing the cell and triggering the opening of voltage-gated Ca²⁺ channels. Consequential oscillations of cytosolic Ca²⁺ not only mediate the exocytosis of insulin granules but are also relayed to other subcellular compartments including the mitochondria, where Ca²⁺ is required to accelerate mitochondrial metabolism in response to nutrient stimulation. The mitochondrial Ca²⁺ uptake machinery plays a fundamental role in this feed-forward mechanism that guarantees sustained insulin secretion and, thus, represents a promising therapeutic target for type 2 diabetes.
Collapse
Affiliation(s)
- Lukas N Groschner
- Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine, Medical University of Graz, Graz, Austria
| | - Muhammad Rizwan Alam
- Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine, Medical University of Graz, Graz, Austria
| | - Wolfgang F Graier
- Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine, Medical University of Graz, Graz, Austria.
| |
Collapse
|
31
|
Waldeck-Weiermair M, Deak AT, Groschner LN, Alam MR, Jean-Quartier C, Malli R, Graier WF. Molecularly distinct routes of mitochondrial Ca2+ uptake are activated depending on the activity of the sarco/endoplasmic reticulum Ca2+ ATPase (SERCA). J Biol Chem 2013; 288:15367-79. [PMID: 23592775 PMCID: PMC3663555 DOI: 10.1074/jbc.m113.462259] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [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] [Indexed: 11/30/2022] Open
Abstract
The transfer of Ca2+ across the inner mitochondrial membrane is an important physiological process linked to the regulation of metabolism, signal transduction, and cell death. While the definite molecular composition of mitochondrial Ca2+ uptake sites remains unknown, several proteins of the inner mitochondrial membrane, that are likely to accomplish mitochondrial Ca2+ fluxes, have been described: the novel uncoupling proteins 2 and 3, the leucine zipper-EF-hand containing transmembrane protein 1 and the mitochondrial calcium uniporter. It is unclear whether these proteins contribute to one unique mitochondrial Ca2+ uptake pathway or establish distinct routes for mitochondrial Ca2+ sequestration. In this study, we show that a modulation of Ca2+ release from the endoplasmic reticulum by inhibition of the sarco/endoplasmatic reticulum ATPase modifies cytosolic Ca2+ signals and consequently switches mitochondrial Ca2+ uptake from an uncoupling protein 3- and mitochondrial calcium uniporter-dependent, but leucine zipper-EF-hand containing transmembrane protein 1-independent to a leucine zipper-EF-hand containing transmembrane protein 1- and mitochondrial calcium uniporter-mediated, but uncoupling protein 3-independent pathway. Thus, the activity of sarco/endoplasmatic reticulum ATPase is significant for the mode of mitochondrial Ca2+ sequestration and determines which mitochondrial proteins might actually accomplish the transfer of Ca2+ across the inner mitochondrial membrane. Moreover, our findings herein support the existence of distinct mitochondrial Ca2+ uptake routes that might be essential to ensure an efficient ion transfer into mitochondria despite heterogeneous cytosolic Ca2+ rises.
Collapse
Affiliation(s)
- Markus Waldeck-Weiermair
- Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine, Medical University of Graz, 8010 Graz, Austria
| | | | | | | | | | | | | |
Collapse
|
32
|
Deak AT, Groschner LN, Alam MR, Seles E, Bondarenko AI, Graier WF, Malli R. The endocannabinoid N-arachidonoyl glycine (NAGly) inhibits store-operated Ca2+ entry by preventing STIM1-Orai1 interaction. J Cell Sci 2012; 126:879-88. [PMID: 23239024 DOI: 10.1242/jcs.118075] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The endocannabiniod anandamide (AEA) and its derivate N-arachidonoyl glycine (NAGly) have a broad spectrum of physiological effects, which are induced by both binding to receptors and receptor-independent modulations of ion channels and transporters. The impact of AEA and NAGly on store-operated Ca(2+) entry (SOCE), a ubiquitous Ca(2+) entry pathway regulating many cellular functions, is unknown. Here we show that NAGly, but not AEA reversibly hinders SOCE in a time- and concentration-dependent manner. The inhibitory effect of NAGly on SOCE was found in the human endothelial cell line EA.hy926, the rat pancreatic β-cell line INS-1 832/13, and the rat basophilic leukemia cell line RBL-2H3. NAGly diminished SOCE independently from the mode of Ca(2+) depletion of the endoplasmic reticulum, whereas it had no effect on Ca(2+) entry through L-type voltage-gated Ca(2+) channels. Enhanced Ca(2+) entry was effectively hampered by NAGly in cells overexpressing the key molecular constituents of SOCE, stromal interacting molecule 1 (STIM1) and the pore-forming subunit of SOCE channels, Orai1. Fluorescence microscopy revealed that NAGly did not affect STIM1 oligomerization, STIM1 clustering, or the colocalization of STIM1 with Orai1, which were induced by Ca(2+) depletion of the endoplasmic reticulum. In contrast, independently from its slow depolarizing effect on mitochondria, NAGly instantly and strongly diminished the interaction of STIM1 with Orai1, indicating that NAGly inhibits SOCE primarily by uncoupling STIM1 from Orai1. In summary, our findings revealed the STIM1-Orai1-mediated SOCE machinery as a molecular target of NAGly, which might have many implications in cell physiology.
Collapse
Affiliation(s)
- Andras T Deak
- Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine, Medical University Graz, Graz, Austria
| | | | | | | | | | | | | |
Collapse
|
33
|
Alam MR, Groschner LN, Parichatikanond W, Kuo L, Bondarenko AI, Rost R, Waldeck-Weiermair M, Malli R, Graier WF. Mitochondrial Ca2+ uptake 1 (MICU1) and mitochondrial Ca2+ uniporter (MCU) contribute to metabolism-secretion coupling in clonal pancreatic β-cells. J Biol Chem 2012. [DOI: 10.1074/jbc.a112.392084] [Citation(s) in RCA: 2] [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: 11/06/2022] Open
|
34
|
Waldeck-Weiermair M, Alam MR, Khan MJ, Deak AT, Vishnu N, Karsten F, Imamura H, Graier WF, Malli R. Spatiotemporal correlations between cytosolic and mitochondrial Ca(2+) signals using a novel red-shifted mitochondrial targeted cameleon. PLoS One 2012; 7:e45917. [PMID: 23029314 PMCID: PMC3448721 DOI: 10.1371/journal.pone.0045917] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Accepted: 08/23/2012] [Indexed: 01/11/2023] Open
Abstract
The transfer of Ca2+ from the cytosol into the lumen of mitochondria is a crucial process that impacts cell signaling in multiple ways. Cytosolic Ca2+ ([Ca2+]cyto) can be excellently quantified with the ratiometric Ca2+ probe fura-2, while genetically encoded Förster resonance energy transfer (FRET)-based fluorescent Ca2+ sensors, the cameleons, are efficiently used to specifically measure Ca2+ within organelles. However, because of a significant overlap of the fura-2 emission with the spectra of the cyan and yellow fluorescent protein of most of the existing cameleons, the measurement of fura-2 and cameleons within one given cell is a complex task. In this study, we introduce a novel approach to simultaneously assess [Ca2+]cyto and mitochondrial Ca2+ ([Ca2+]mito) signals at the single cell level. In order to eliminate the spectral overlap we developed a novel red-shifted cameleon, D1GO-Cam, in which the green and orange fluorescent proteins were used as the FRET pair. This ratiometric Ca2+ probe could be successfully targeted to mitochondria and was suitable to be used simultaneously with fura-2 to correlate [Ca2+]cyto and [Ca2+]mito within same individual cells. Our data indicate that depending on the kinetics of [Ca2+]cyto rises there is a significant lag between onset of [Ca2+]cyto and [Ca2+]mito signals, pointing to a certain threshold of [Ca2+]cyto necessary to activate mitochondrial Ca2+ uptake. The temporal correlation between [Ca2+]mito and [Ca2+]cyto as well as the efficiency of the transfer of Ca2+ from the cytosol into mitochondria varies between different cell types. Moreover, slow mitochondrial Ca2+ extrusion and a desensitization of mitochondrial Ca2+ uptake cause a clear difference in patterns of mitochondrial and cytosolic Ca2+ oscillations of pancreatic beta-cells in response to D-glucose.
Collapse
Affiliation(s)
- Markus Waldeck-Weiermair
- Institute of Molecular Biology and Biochemistry, Centre of Molecular Medicine, Medical University of Graz, Graz, Austria
| | - Muhammad Rizwan Alam
- Institute of Molecular Biology and Biochemistry, Centre of Molecular Medicine, Medical University of Graz, Graz, Austria
| | - Muhammad Jadoon Khan
- Institute of Molecular Biology and Biochemistry, Centre of Molecular Medicine, Medical University of Graz, Graz, Austria
| | - Andras T. Deak
- Institute of Molecular Biology and Biochemistry, Centre of Molecular Medicine, Medical University of Graz, Graz, Austria
| | - Neelanjan Vishnu
- Institute of Molecular Biology and Biochemistry, Centre of Molecular Medicine, Medical University of Graz, Graz, Austria
| | - Felix Karsten
- Institute of Molecular Biology and Biochemistry, Centre of Molecular Medicine, Medical University of Graz, Graz, Austria
| | - Hiromi Imamura
- Precursory Research for Embryonic Science, Japan Science and Technology Agency, Tokyo, Japan
| | - Wolfgang F. Graier
- Institute of Molecular Biology and Biochemistry, Centre of Molecular Medicine, Medical University of Graz, Graz, Austria
| | - Roland Malli
- Institute of Molecular Biology and Biochemistry, Centre of Molecular Medicine, Medical University of Graz, Graz, Austria
- * E-mail:
| |
Collapse
|
35
|
Alam MR, Groschner LN, Parichatikanond W, Kuo L, Bondarenko AI, Rost R, Waldeck-Weiermair M, Malli R, Graier WF. Mitochondrial Ca2+ uptake 1 (MICU1) and mitochondrial ca2+ uniporter (MCU) contribute to metabolism-secretion coupling in clonal pancreatic β-cells. J Biol Chem 2012; 287:34445-54. [PMID: 22904319 PMCID: PMC3464549 DOI: 10.1074/jbc.m112.392084] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
In pancreatic β-cells, uptake of Ca2+ into mitochondria facilitates metabolism-secretion coupling by activation of various matrix enzymes, thus facilitating ATP generation by oxidative phosphorylation and, in turn, augmenting insulin release. We employed an siRNA-based approach to evaluate the individual contribution of four proteins that were recently described to be engaged in mitochondrial Ca2+ sequestration in clonal INS-1 832/13 pancreatic β-cells: the mitochondrial Ca2+ uptake 1 (MICU1), mitochondrial Ca2+ uniporter (MCU), uncoupling protein 2 (UCP2), and leucine zipper EF-hand-containing transmembrane protein 1 (LETM1). Using a FRET-based genetically encoded Ca2+ sensor targeted to mitochondria, we show that a transient knockdown of MICU1 or MCU diminished mitochondrial Ca2+ uptake upon both intracellular Ca2+ release and Ca2+ entry via L-type channels. In contrast, knockdown of UCP2 and LETM1 exclusively reduced mitochondrial Ca2+ uptake in response to either intracellular Ca2+ release or Ca2+ entry, respectively. Therefore, we further investigated the role of MICU1 and MCU in metabolism-secretion coupling. Diminution of MICU1 or MCU reduced mitochondrial Ca2+ uptake in response to d-glucose, whereas d-glucose-triggered cytosolic Ca2+ oscillations remained unaffected. Moreover, d-glucose-evoked increases in cytosolic ATP and d-glucose-stimulated insulin secretion were diminished in MICU1- or MCU-silenced cells. Our data highlight the crucial role of MICU1 and MCU in mitochondrial Ca2+ uptake in pancreatic β-cells and their involvement in the positive feedback required for sustained insulin secretion.
Collapse
Affiliation(s)
- Muhammad Rizwan Alam
- Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine, Medical University of Graz, 8010 Graz, Austria
| | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Khan MJ, Rizwan Alam M, Waldeck-Weiermair M, Karsten F, Groschner L, Riederer M, Hallström S, Rockenfeller P, Konya V, Heinemann A, Madeo F, Graier WF, Malli R. Inhibition of autophagy rescues palmitic acid-induced necroptosis of endothelial cells. J Biol Chem 2012; 287:21110-20. [PMID: 22556413 PMCID: PMC3375534 DOI: 10.1074/jbc.m111.319129] [Citation(s) in RCA: 112] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Revised: 04/03/2012] [Indexed: 12/19/2022] Open
Abstract
Accumulation of palmitic acid (PA) in cells from nonadipose tissues is known to induce lipotoxicity resulting in cellular dysfunction and death. The exact molecular pathways of PA-induced cell death are still mysterious. Here, we show that PA triggers autophagy, which did not counteract but in contrast promoted endothelial cell death. The PA-induced cell death was predominantly necrotic as indicated by annexin V and propidium iodide (PI) staining, absence of caspase activity, low levels of DNA hypoploidy, and an early ATP depletion. In addition PA induced a strong elevation of mRNA levels of ubiquitin carboxyl-terminal hydrolase (CYLD), a known mediator of necroptosis. Moreover, siRNA-mediated knockdown of CYLD significantly antagonized PA-induced necrosis of endothelial cells. In contrast, inhibition and knockdown of receptor interacting protein kinase 1 (RIPK1) had no effect on PA-induced necrosis, indicating the induction of a CYLD-dependent but RIPK1-independent cell death pathway. PA was recognized as a strong and early inducer of autophagy. The inhibition of autophagy by both pharmacological inhibitors and genetic knockdown of the autophagy-specific genes, vacuolar protein sorting 34 (VPS34), and autophagy-related protein 7 (ATG7), could rescue the PA-induced death of endothelial cells. Moreover, the initiation of autophagy and cell death by PA was reduced in endothelial cells loaded with the Ca(2+) chelator 1,2-bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid-(acetoxymethyl) ester (BAPTA-AM), indicating that Ca(2+) triggers the fatal signaling of PA. In summary, we introduce an unexpected mechanism of lipotoxicity in endothelial cells and provide several novel strategies to counteract the lipotoxic signaling of PA.
Collapse
Affiliation(s)
- Muhammad Jadoon Khan
- From the Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine
| | - Muhammad Rizwan Alam
- From the Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine
| | | | - Felix Karsten
- From the Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine
| | - Lukas Groschner
- From the Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine
| | - Monika Riederer
- From the Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine
| | - Seth Hallström
- the Institute of Physiological Chemistry, Center of Physiological Medicine, and
| | | | - Viktoria Konya
- the Institute of Experimental and Clinical Pharmacology, Center of Molecular Medicine, Medical University of Graz, 8010 Graz, Austria and
| | - Akos Heinemann
- the Institute of Experimental and Clinical Pharmacology, Center of Molecular Medicine, Medical University of Graz, 8010 Graz, Austria and
| | - Frank Madeo
- the Center for Molecular Biosciences, University of Graz, 8010 Graz, Austria
| | - Wolfgang F. Graier
- From the Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine
| | - Roland Malli
- From the Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine
| |
Collapse
|
37
|
Jean-Quartier C, Bondarenko AI, Alam MR, Trenker M, Waldeck-Weiermair M, Malli R, Graier WF. Studying mitochondrial Ca(2+) uptake - a revisit. Mol Cell Endocrinol 2012; 353:114-27. [PMID: 22100614 PMCID: PMC3334272 DOI: 10.1016/j.mce.2011.10.033] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 09/29/2011] [Accepted: 10/29/2011] [Indexed: 01/28/2023]
Abstract
Mitochondrial Ca(2+) sequestration is a well-known process that is involved in various physiological and pathological mechanisms. Using isolated suspended mitochondria one unique mitochondrial Ca(2+) uniporter was considered to account ubiquitously for the transfer of Ca(2+) into these organelles. However, by applying alternative techniques for measuring mitochondrial Ca(2+) uptake evidences for molecularly distinct mitochondrial Ca(2+) carriers accumulated recently. Herein we compared different methodical approaches of studying mitochondrial Ca(2+) uptake. Patch clamp technique on mitoplasts from endothelial and HeLa cells revealed the existence of three and two mitoplast Ca(2+) currents (I(CaMito)), respectively. According to their conductance, these channels were named small (s-), intermediate (i-), large (l-) and extra-large (xl-) mitoplast Ca(2+) currents (MCC). i-MCC was found in mitoplasts of both cell types whereas s-MCC and l-MCC or xl-MCC were/was exclusively found in mitoplasts from endothelial cells or HeLa cells. The comparison of mitochondrial Ca(2+) signals, measured either indirectly by sensing extra-mitochondrial Ca(2+) or directly by recording changes of the matrix Ca(2+), showed different Ca(2+) sensitivities of the distinct mitochondrial Ca(2+) uptake routes. Subpopulations of mitochondria with different Ca(2+) uptake capacities in intact endothelial cells could be identified using Rhod-2/AM. In contrast, cells expressing mitochondrial targeted pericam or cameleon (4mtD3cpv) showed homogeneous mitochondrial Ca(2+) signals in response to cell stimulation. The comparison of different experimental approaches and protocols using isolated organelles, permeabilized and intact cells, pointed to cell-type specific and versatile pathways for mitochondrial Ca(2+) uptake. Moreover, this work highlights the necessity of the utilization of multiple technical approaches to study the complexity of mitochondrial Ca(2+) homeostasis.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Wolfgang F. Graier
- Corresponding author. Address: Molecular and Cellular Physiology Research Unit, Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine, Medical University of Graz, Harrachgasse 21/III, A-8010 Graz, Austria. Tel.: +43 316 380 7560; fax: +43 316 380 9615.
| |
Collapse
|
38
|
Khanam A, Alam MR, Ahmed AH, Khan SA. The outcome of kidney transplants with multiple renal arteries. Mymensingh Med J 2011; 20:88-92. [PMID: 21240169] [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: 05/30/2023]
Abstract
The use of grafts with multiple renal arteries has been considered a relative contraindication because of the increased incidence of vascular and urologic complications. The aim of this retrospective study is to determine whether the kidney grafts with multiple arteries have any adverse effect upon post transplant graft and patient survival. After reviewing the records of 35 adult kidney transplants done consecutively at Bangabandhu Sheik Mujib Medical University over a period of 3 years (Jan 2005 to Dec 2007). Mean age of recipients. 43.46±12.11 years and donors 40.33±11.46 years. Twenty patients (Group A) had grafts with single renal artery and 15 patients (Group B) had grafts with multiple renal arteries. The incidence of vascular complications, ureteral complications, post surgical haemorrhage, mean serum creatinine level and acute tubular necrosis in both Group A & B were observed. Complications developed in 15(43%) patients in this series. In Group A, 1(5%) developed post operative bleeding cause perinephric hematoma, 1(5%) technical obstruction of ureter, 1(5%) sloughed ureter, graft nephrectomy 1(5%) and acute tubular necrosis 1(5%) patient. In Group B, 2(13%) patients developed hematoma, urine leak 3(20%), sloughed ureter 1(6%), graft nephrectomy 1(6%) and acute tubular necrosis 3(20%) patients. Though the kidney grafts with multiple renal arteries have been considered a relative contraindication because of the increased risk of complication. In this series incidence of complication was 43%. The higher rate probably reflects the small number of living related donors.
Collapse
Affiliation(s)
- A Khanam
- Department of Nephrology, Bangabandhu Sheik Mujib Medical University, Shahbagh, Dhaka, Bangladesh
| | | | | | | |
Collapse
|
39
|
Sarker ZM, Mahmud AK, Chowdhury AJ, Hasnat MA, Alam MR, Paul HK, Bhuiyan MR. Tuberculous pleural effusion. Mymensingh Med J 2011; 20:66-70. [PMID: 21240165] [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: 05/30/2023]
Abstract
Despite prevention programs, tuberculosis is still endemic in developing countries. Extrapulmonary tuberculosis is increasing globally in the face of recent emergence of Human Immunodeficiency Virus (HIV) infection. Pleural tuberculosis is a common problem in daily clinical practice. We assessed 26 cases of tuberculous pleural effusion admitted in Bangabandhu Sheikh Mujib Medical University from 2002 to 2007. The diagnosis was based upon clinical examination, tuberculin reaction, imaging, pleural fluid analysis and response to antitubercular chemotherapy a surrogate clinical determinant. Apparently promising newer biochemical pleural fluid measurements were not utilized due to a number of limitations. The presenting symptoms found in this prospective analysis are fever (100%), nonproductive cough (73%), pleuritic chest pain (38%), loss of weight (38%) and shortness of breath (38%). A high index of suspicion after confident exclusion of malignancy and pneumonia is a clue to diagnosis. Out of 80 cases of extrapulmonary tuberculosis admitted during the study period, tuberculous pleural effusion constitutes 32.50%.
Collapse
Affiliation(s)
- Z M Sarker
- Bangabandhu Sheikh Mujib Medical University, Shahbagh, Dhaka, Bangladesh
| | | | | | | | | | | | | |
Collapse
|
40
|
Ahmed AH, Khanam A, Begum S, Khaleque A, Alam MR. Intrathoracic kidney in adult with an abnormal presentation. Mymensingh Med J 2011; 20:151-154. [PMID: 21240181] [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: 05/30/2023]
Abstract
Intra thoracic kidney is a rare congenital anomaly. Pathologically thoracic renal ectopia is due to eventration of the diaphragm. Usually symptoms appear in infancy and rarely in adult with respiratory problems and with organ involved. This only patient presented with left sided chest pain and abdominal discomfort at the age of 52 years having repeated previous similar attack in the department of Cardiology. Chest X ray and ultrasonography of whole abdomen was done along with other routine investigations, which reveals an ectopic and elevated left kidney. Five percent of the renal ectopia is intrathoracic kidney. It usually is symptomatic in infantile age but adult presentation is also found.
Collapse
Affiliation(s)
- A H Ahmed
- Department of Nephrology, Bangabandhu Sheikh Mujib Medical University, Shahbagh, Dhaka, Bangladesh.
| | | | | | | | | |
Collapse
|
41
|
Hoque MA, Skerratt LF, Cook AJC, Khan SA, Grace D, Alam MR, Vidal-Diez A, Debnath NC. Factors limiting the health of semi-scavenging ducks in Bangladesh. Trop Anim Health Prod 2010; 43:441-50. [PMID: 20936345 DOI: 10.1007/s11250-010-9712-1] [Citation(s) in RCA: 15] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/28/2010] [Indexed: 11/30/2022]
Abstract
Duck rearing is well suited to coastal and lowland areas in Bangladesh. It is an important component of sustainable livelihood strategies for poor rural communities as an additional source of household income. An epidemiological study was conducted during January 2005-June 2006 on 379 households in Chatkhil of the Noakhali District, Bangladesh which were using the recently devised "Bangladesh duck model". The overall objective of the study was to identify factors that significantly contributed to mortality and constrained productivity and to generate sufficient knowledge to enable establishment of a disease surveillance system for household ducks. The overall mortality was 15.0% in Chatkhil, with predation causing a significantly higher mortality compared with diseases (p < 0.001). Common diseases were duck plague and duck cholera. Morbid ducks frequently displayed signs associated with diseases affecting the nervous and digestive systems. Haemorrhagic lesions in various organs and white multiple foci on the liver were frequently observed in dead ducks. Epidemiological analysis with a shared frailty model that accounted for clustering of data by farm was used to estimate the association between survival time and risk factors. The overall mortality rate due to disease was significantly lower in vaccinated than in non-vaccinated ducks in all zones except zone 2 (p < 0.001). Only vaccinated ducks survived in zone 1. In conclusion, duck mortality and untimely sale of ducks appeared to be important constraints for household duck production in Chatkhil. Vaccination against duck plague appears to be an effective preventive strategy in reducing the level of associated duck mortality. A successful network was established amongst farmers and the surveillance team through which dead ducks, with accompanying information, were readily obtained for analysis. Therefore, there is an opportunity for establishing a long-term disease surveillance programme for rural ducks in Chatkhil of the Noakhali District of Bangladesh.
Collapse
Affiliation(s)
- M A Hoque
- Chittagong Veterinary and Animal Sciences University, Khulshi, Chittagong 4202, Bangladesh.
| | | | | | | | | | | | | | | |
Collapse
|
42
|
Alam MR, Habib MS, Dhakal GP, Khan MR, Rahim MA, Chowdhury AJ, Mahmud TK. Extramedullary hematopoiesis and paraplegia in a patient with hemoglobin e-Beta thalassemia. Mymensingh Med J 2010; 19:452-457. [PMID: 20639844] [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: 05/29/2023]
Abstract
Extramedullary hematopoiesis (EMH) occurs in patients with various hematologic disorders involving a chronic increase in the production of red blood cells, and is often associated polycythemia vera and sickle cell anaemia, but is less common with thalassemia especially with hemoglobin E-beta thalassemia. Spinal cord compression due to EMH is a extremely rare complication of thalassemia and may present with paraparesis or paraplegia with or without sensory impairment. Treatment options mostly include surgery and/or radiotherapy. Whereas cases presenting with paraplegia have been treated with either surgery or radiotherapy with equal frequency and efficacy, almost all reported cases with paraplegia have been treated with surgery with or without radiation therapy. We hereby report a case of hemoglobin E-beta thalassemia with paraplegia treated successfully with radiotherapy.
Collapse
Affiliation(s)
- M R Alam
- Department of Medicine, Bangabandhu Sheikh Mujib Medical University (BSMMU), Shahbagh, Dhaka, Bangladesh
| | | | | | | | | | | | | |
Collapse
|
43
|
Dey SK, Ahmed S, Rahman KM, Uddin MJ, Alam MR, Bhattacharjee M, Mondal G, Israil A. Lipid profile among ischemic and haemorrhagic stroke patients. Mymensingh Med J 2010; 19:176-180. [PMID: 20395908] [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: 05/29/2023]
Abstract
This study is a prospective cross- sectional study conducted in the Neurology and Medicine department of Mymensingh Medical college Hospital (MMCH) to see the association of different components of serum lipids among ischemic and hemorrhagic stroke patients. Cases were selected following certain inclusion and exclusion criteria. Result showed that both types of stroke were more common after the age of 50 years. Male suffered more than female. M:F in ischemic stroke group was 1.73:1, and in hemorrhagic group was 1.42:1. Both types of stroke belong to middle class people. Smoking, hypertension and diabetes mellitus were equally common in both types of stroke. Low density lipoprotein (LDL) level were more than desired level in both types of stroke and there was no significant difference between two groups (p>0.05). Other components of lipid profile (total cholesterol, HDL, Triglyceride) were within normal range and there was no significant difference between two groups (p>0.05).
Collapse
Affiliation(s)
- S K Dey
- Dr Subash Kanti Dey, Registrar, Department of Neurology, Mymensingh Medical College Hospital, Mymensingh, Bangladesh
| | | | | | | | | | | | | | | |
Collapse
|
44
|
Reddy AK, Garg P, Alam MR, Gopinathan U, Sharma S, Krishnaiah S. Comparison of in vitro susceptibilities of Gram-positive cocci isolated from ocular infections against the second and fourth generation quinolones at a tertiary eye care centre in South India. Eye (Lond) 2009; 24:170-4. [DOI: 10.1038/eye.2009.29] [Citation(s) in RCA: 9] [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: 11/09/2022] Open
|
45
|
Alam MR, Lee JI, Kang HS, Kim IS, Park SY, Lee KC, Kim NS. Frequency and distribution of patellar luxation in dogs. 134 cases (2000 to 2005). Vet Comp Orthop Traumatol 2007; 20:59-64. [PMID: 17364098] [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: 05/14/2023]
Abstract
This study investigated the frequency and distribution of patellar luxation in the dogs presented to the Chonbuk National University Animal Medical Centre during January 2000 to September 2005. Patellar luxations were classified as medial or lateral, and unilateral or bilateral, were graded I to IV, and were subdivided according to age, sex and size of the dogs. The incidence of medial patellar luxation (MPL) was greater than the incidence of lateral patellar luxation (LPL) in both small and large dogs. Small-breed dogs were admitted almost exclusively with MPL. LPL was found uncommon; however it was observed more often in larger-breed dogs. Surgical correction was performed primarily in the dogs (165 stifles in 111 dogs) with grade II, III and IV patellar luxations following different surgical techniques. The combination of the surgical techniques was found to be more effective for the management of the disease. The prognosis was found to be favourable, because when the grade was low, the dog was younger, without cruciate ligament rupture, and as the surgical correction was performed with combination of more techniques.
Collapse
Affiliation(s)
- M R Alam
- College of Vetarinary Medicine, Chonbuk National University, Chonju City, Chonbuk 561-756, Korea
| | | | | | | | | | | | | |
Collapse
|
46
|
Das SN, Alam MR, Islam N, Rahman MH, Sutradhar SR, Rahman S, Khan GK, Rahim A, Haq SA. Placebo controlled trial of methotrexate in systemic sclerosis. Mymensingh Med J 2005; 14:71-4. [PMID: 15695960] [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: 05/01/2023]
Abstract
Eighteen adult patients of systemic sclerosis were included in this prospective study from Rheumatology Clinic of Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka during the period of July 1997 to December 1999 to observe the effectiveness of treatment with methotrexate (MTX) versus placebo. Among the eighteen patients 9 patients were randomly assigned to MTX and 9 to placebo therapy. Nine patients were dropped out (6 in placebo and 3 in the MTX group), because of toxicity and non-compliance. Clinical improvement following treatment was observed in 33.33% of the patient in MTX group but none in placebo group, but this difference was not statistically significant. Anorexia, nausea and occasional vomiting were common side effects in MTX group and subsided in most cases with the passage of time despite the continuation of therapy.
Collapse
Affiliation(s)
- S N Das
- Sir Salimullah Medical College, Dhaka
| | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Iqbal M, Banerjee S, Alam MR, Islam S, Rahman H, Rashid HU. Clinical and echocardiographic evaluation of renal allograft recipients in the first year after transplantation. Transplant Proc 2003; 35:271-2. [PMID: 12591395 DOI: 10.1016/s0041-1345(02)03962-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- M Iqbal
- Department of Nephrology, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh.
| | | | | | | | | | | |
Collapse
|
48
|
Sasaki S, Ehara T, Alam MR, Fujino Y, Harada N, Kimura J, Nakamura H, Maeda M. Solid-Phase synthesis of a library constructed of aromatic phosphate, long alkyl chains and tryptophane components, and identification of potent dipeptide telomerase inhibitors. Bioorg Med Chem Lett 2001; 11:2581-4. [PMID: 11551754 DOI: 10.1016/s0960-894x(01)00507-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 11/19/2022]
Abstract
Telomerase inhibitors are expected as a new candidate of therapeutic agents for cancer. Recently, we have found novel inhibitors based on the bisindole skeleton. In this study, solid-phase synthesis was applied to construct a library of inhibitors having aromatic phosphate, long alkyl chain and tryptophane components, from which a D,D-ditryptophane derivative has been identified as a new potent telomerase inhibitor with IC(50) values of 0.3 microM. A hypothetical binding model for the new inhibitors has been proposed based on the structure-activity relationship.
Collapse
Affiliation(s)
- S Sasaki
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
49
|
Abstract
This study presents the first report of vancomycin heteroresistance in an Enterococcus faecium isolate from a patient. The original isolate was susceptible in vitro to vancomycin. E-tests showed growth of subcolonies in a zone of inhibition with a vancomycin MIC of >256 microg/ml. Both the susceptible and resistant colonies were from the same strain as determined by PFGE, and both contained the vanA gene as determined by PCR.
Collapse
Affiliation(s)
- M R Alam
- Division of Infectious Disease, Department of Medicine, William Beaumont Hospital, Royal Oak, Michigan 48073, USA
| | | | | | | | | | | | | |
Collapse
|
50
|
Alam MR, Steveson TC, Johnson RC, Bäck N, Abraham B, Mains RE, Eipper BA. Signaling mediated by the cytosolic domain of peptidylglycine alpha-amidating monooxygenase. Mol Biol Cell 2001; 12:629-44. [PMID: 11251076 PMCID: PMC30969 DOI: 10.1091/mbc.12.3.629] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
The luminal domains of membrane peptidylglycine alpha-amidating monooxygenase (PAM) are essential for peptide alpha-amidation, and the cytosolic domain (CD) is essential for trafficking. Overexpression of membrane PAM in corticotrope tumor cells reorganizes the actin cytoskeleton, shifts endogenous adrenocorticotropic hormone (ACTH) from mature granules localized at the tips of processes to the TGN region, and blocks regulated secretion. PAM-CD interactor proteins include a protein kinase that phosphorylates PAM (P-CIP2) and Kalirin, a Rho family GDP/GTP exchange factor. We engineered a PAM protein unable to interact with either P-CIP2 or Kalirin (PAM-1/K919R), along with PAM proteins able to interact with Kalirin but not with P-CIP2. AtT-20 cells expressing PAM-1/K919R produce fully active membrane enzyme but still exhibit regulated secretion, with ACTH-containing granules localized to process tips. Immunoelectron microscopy demonstrates accumulation of PAM and ACTH in tubular structures at the trans side of the Golgi in AtT-20 cells expressing PAM-1 but not in AtT-20 cells expressing PAM-1/K919R. The ability of PAM to interact with P-CIP2 is critical to its ability to block exit from the Golgi and affect regulated secretion. Consistent with this, mutation of its P-CIP2 phosphorylation site alters the ability of PAM to affect regulated secretion.
Collapse
Affiliation(s)
- M R Alam
- Department of Neuroscience, University of Connecticut Health Center, Farmington, Connecticut 06030-3401, USA
| | | | | | | | | | | | | |
Collapse
|