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Tan HS, Tan CW, Sultana R, Chen HY, Chua T, Rahman N, Gandhi M, Sia ATH, Sng BL. The association between epidural labour analgesia and postpartum depression: a randomised controlled trial. Anaesthesia 2024; 79:357-367. [PMID: 37990597 DOI: 10.1111/anae.16178] [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] [Accepted: 10/16/2023] [Indexed: 11/23/2023]
Abstract
There is conflicting evidence regarding the association between epidural labour analgesia and risk of postpartum depression. Most previous studies were observational trials with limited ability to account for confounders. We aimed to determine if epidural analgesia was associated with a significant change in the incidence of postpartum depression in this randomised controlled trial. We enrolled women aged 21-50 years old with a singleton fetus ≥ 36 weeks gestation. Patients were advised regarding available labour analgesic modalities during enrolment (epidural block; intramuscular pethidine; nitrous oxide; or intravenous remifentanil). On request for analgesia, patients were offered the modality that they had been allocated randomly to first. Blinded investigators recorded patient and obstetric characteristics within 24 h of delivery and assessed for postpartum depression at 6-10 weeks following delivery using the Edinburgh Postnatal Depression Scale (score ≥ 13 considered positive for postpartum depression). The modified intention-to-treat population consisted of all patients who received any form of labour analgesia, while per-protocol consisted of patients who received their randomised modality as their first form of labour analgesia. Of 881 parturients allocated randomly (epidural n = 441, non-epidural n = 440), we analysed 773 (epidural n = 389, non-epidural n = 384); 62 (15.9%) of women allocated to epidural group developed postpartum depression compared with 65 (16.9%) women allocate to the non-epidural group. There were no significant differences in the incidence of postpartum depression between the two groups (adjusted risk difference (95%CI) 1.6 (-3.0-6.3%), p = 0.49). Similar results were obtained with per-protocol analysis (adjusted risk difference (95%CI) -1.0 (-8.3-6.3%), p = 0.79). We found no significant difference in the risk of postpartum depression between patients who received epidural labour analgesia and those who utilised non-epidural analgesic modalities.
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Affiliation(s)
- H S Tan
- Department of Women's Anaesthesia, KK Women's and Children's Hospital, Singapore, Singapore
- Anaesthesiology and Perioperative Sciences Academic Clinical Program, Duke-NUS Medical School, Singapore, Singapore
| | - C W Tan
- Department of Women's Anaesthesia, KK Women's and Children's Hospital, Singapore, Singapore
- Anaesthesiology and Perioperative Sciences Academic Clinical Program, Duke-NUS Medical School, Singapore, Singapore
| | - R Sultana
- Centre for Quantitative Medicine, Duke-NUS Medical School, Singapore, Singapore
| | - H Y Chen
- Department of Psychological Medicine, KK Women's and Children's Hospital, Singapore, Singapore
- Paediatrics Academic Clinical Program, Duke-NUS Medical School, Singapore, Singapore
| | - T Chua
- Department of Psychological Medicine, KK Women's and Children's Hospital, Singapore, Singapore
- Paediatrics Academic Clinical Program, Duke-NUS Medical School, Singapore, Singapore
| | - N Rahman
- Department of Biostatistics, Singapore Clinical Research Institute, Singapore, Singapore
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
| | - M Gandhi
- Centre for Quantitative Medicine, Duke-NUS Medical School, Singapore, Singapore
- Department of Biostatistics, Singapore Clinical Research Institute, Singapore, Singapore
| | - A T H Sia
- Department of Women's Anaesthesia, KK Women's and Children's Hospital, Singapore, Singapore
- Anaesthesiology and Perioperative Sciences Academic Clinical Program, Duke-NUS Medical School, Singapore, Singapore
| | - B L Sng
- Department of Women's Anaesthesia, KK Women's and Children's Hospital, Singapore, Singapore
- Anaesthesiology and Perioperative Sciences Academic Clinical Program, Duke-NUS Medical School, Singapore, Singapore
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Siddique AB, Omi NT, Rasel SM, Hoque SSB, Rahman N, Sarker S, Ghosh A, Ahmed I, Akash Y, Ahmed A, Sikder MT. Assessment of perceived dengue risk and prevention practices among youth in Bangladesh. Sci Rep 2024; 14:3940. [PMID: 38365884 PMCID: PMC10873384 DOI: 10.1038/s41598-024-54238-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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 02/10/2024] [Indexed: 02/18/2024] Open
Abstract
Dengue fever is a global public health concern, especially in countries like Bangladesh. This study examines youth perceived dengue risk, and preventive practices, providing valuable insights into their behavior regarding this mosquito-borne disease. A cross-sectional survey was undertaken in various regions of the Dhaka district in Bangladesh. Face-to-face interviews were conducted with 1,358 participants using convenience sampling, spanning the period from September 2 to October 10, 2023. A semi-structured questionnaire covered informed consent, socio-demographic data, and questions about perceived dengue risk scale (12 items), and prevention practice (13 items). Participants' mean age was 22.02 ± 1.58 years. The average scores for perceived dengue risk, and prevention practices were found to be 51.39 ± 12.01 (out of 96), and 55.57 ± 14.55 (out of 104) respectively. Previous dengue history, history of other vector-borne diseases, gender, educational level, father's educational qualification, employment status, adequate sleep duration, father's occupation, etc. are factors associated with higher risk and prevention practices regarding dengue. The research underscores the importance of tailoring prevention strategies for different demographics, raising awareness, and promoting active engagement in preventive measures. These insights are crucial for developing effective public health policies and campaigns to combat dengue.
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Affiliation(s)
- Abu Bakkar Siddique
- Department of Public Health and Informatics, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh.
- Centre for Advanced Research Excellence in Public Health, Savar, Dhaka, 1342, Bangladesh.
- International Centre for Research, Innovation, Training and Development (ICRITD), Dhaka, Bangladesh.
- AMR Reference Laboratory (Research), Bangladesh Livestock Research Institute, Savar, Dhaka, 1341, Bangladesh.
- Health and Environmental Epidemiology Laboratory (HEEL), Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh.
| | - Nishat Tamanna Omi
- Department of Public Health and Informatics, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Sayed Mohammad Rasel
- Department of Public Health and Informatics, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Sayeda Samira Binte Hoque
- Department of Public Health and Informatics, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Naimur Rahman
- Department of Public Health and Informatics, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Sanjida Sarker
- Department of Public Health and Informatics, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Ankon Ghosh
- Department of Public Health and Informatics, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Imtiaz Ahmed
- Department of Public Health and Informatics, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Yeasin Akash
- Department of Public Health and Informatics, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Ayesha Ahmed
- Department of Public Health and Informatics, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
- Health and Environmental Epidemiology Laboratory (HEEL), Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Md Tajuddin Sikder
- Department of Public Health and Informatics, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh.
- Health and Environmental Epidemiology Laboratory (HEEL), Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh.
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Biswas R, Rahman N, Kamrul-Hasan AB. Disorders of Sex Development: Experience at a Tertiary Care Hospital in Bangladesh. Mymensingh Med J 2024; 33:140-145. [PMID: 38163785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
In newborns, it is an emergency to decide the appropriate sex for rearing and eventual prevention associated metabolic disturbances. The birth of a baby with ambiguous genitalia inevitably precipitates a crisis for the baby and its family. This retrospective analysis of hospital data was designed to determine the chromosomal and etiological diagnosis of children presented with suspected disorders of sex development (DSD) according to the newer DSD consensus document. We retrospectively analyzed the available medical records of all patients admitted into the inpatient departments of Dhaka Shishu (Children) Hospital, Dhaka, Bangladesh from January 2014 to December 2019, and all patients with the diagnosis of DSD in the hospital record were initially selected for the study. A total of 60 admitted cases with a disorder of sex development were classified according to the new DSD classification. 46XX DSD were 63.3% (n=38), 46XY DSD were 33.3% (n=20), sex chromosome DSD were 3.3% (n=2). Among 38 cases of 46XX DSD, the most common cause was congenital adrenal hyperplasia (97.0%, n=37), one was 46XX testicular DSD. However, among 46XY DSD cases, partial androgen insensitivity/5α-reductase deficiency (50.0%, n=10) was most common disorder. Other causes of 46XY DSD included congenital adrenal hyperplasia (20.0%, n=4), testosterone synthesis defect (20.0%, n=4), testicular regression syndrome (n=1) and persistent Mullerian duct syndrome (n=1). Sex chromosome disorders are mixed gonadal dysgenesis (n=1), chimeric ovotesticular DSD (n=1). In this study, 46XX DSD was the commonest of all, showing the predominance of congenital adrenal hyperplasia, especially salt-losing type. Early detection and prompt treatment may help reduce mortality and morbidity from these acute life-threatening conditions.
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Affiliation(s)
- R Biswas
- Dr Rabi Biswas, Associate Professor, Department of Pediatric Endocrinology and Metabolic Disorders, Bangladesh Institute of Child Health & Dhaka Shishu (Children) Hospital, Dhaka, Bangladesh; E-mail:
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Rahman N, Rahman MA, Rahman MM, Ahmed B, Akter MR, Karim MR, Ahamed F. Role of Rehabilitation Exercise on Myofascial Pain Syndrome Causing Upper Back Pain. Mymensingh Med J 2023; 32:1096-1102. [PMID: 37777907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/02/2023]
Abstract
Upper back pain is as painful or troublesome as the pain in the lower back or the neck. Myofascial pain syndrome which is most common cause of upper back pain is characterized by localized musculoskeletal pain and tenderness in association with trigger points. The aim of the study was to correlate the improvement of myofascial pain syndrome patients with proper and timely physical therapy. This quasi experimental study was conducted in the department of Physical Medicine and Rehabilitation, Bangabandhu Sheikh Mujib Medical University (BSMMU), Bangladesh, from 1st January 2008 to 31st August 2008 to see the role of rehabilitation exercise on myofascial pain syndrome causing upper back pain. Sixty (60) patients of myofascial pain syndrome causing upper back pain were randomly assigned for treatment; out of which 23(38.33%) were male and 37(61.66%) were female. The male and female ratio was 1:1.6. The patients selected for the trial were divided into two groups: Group A and Group B. In group A (n=28) the patients were treated with thermotherapy- Microwave diathermy, non-steroidal anti inflammatory drugs and activities of daily living instructions and in Group B (n=32) with same interventions in addition to rehabilitation exercises. Treatment duration was 6 weeks. The difference of treatment improvement was statistically significant (p<0.05) from 1st week up to 6th week. After complete course of treatment 67.86% patients in Group A and 78.13% patients in group B reported improvement. So rehabilitation exercises can be a valuable adjunct to other modalities of treatment of myofascial pain syndrome causing upper back pain.
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Affiliation(s)
- N Rahman
- Dr Nadia Rahman, Consultant, Department of Physical Medicine and Rehabilitation, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
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Ahasan F, Nasir M, Perveen RA, Rahman N, Omar E, Akter S, Khanam M, Anny FC, Quadir R, Zahan T, Farha N, Chowdhury AS, Iqbal MJ, Akter MT, Rahman S, Begum T, Sabiha K, Anwar MA. Knowledge, Attitude and Practice of Undergraduate Medical Students of Bangladesh Regarding COVID-19 and its Vaccination. Mymensingh Med J 2023; 32:794-801. [PMID: 37391976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2023]
Abstract
Medical students are one of the socially active, reliable, and persuading population of information, prevention and control, and incentive of vaccination to stop the current pandemic situation. Consequently, knowing the status of medical students' knowledge, about symptoms, and transmission of disease, prevention of COVID-19 and their attitudes towards a vaccine is important. This multi-center cross-sectional descriptive study was one of the first ones in Bangladesh among the undergraduate medical students who completed pathology, microbiology, and pharmacology. The study was conducted from March to April 2021, using a convenience sampling method in twelve government and non-government medical colleges. Among 1132 who completed the questionnaire, and 15 students from different centers were excluded from the pre-testing and face validation. The age of the 1117 respondents were 22 to 23 years, of which the majority of the respondents were female 749 (67.0%), and 368 (33.0%) were male. Almost all participants had correct knowledge (84.1%) about the symptoms of COVID-19. But 59.2% had wrong knowledge about transmission of disease by an afebrile person. Above 60.0 % of the participants have worn a facial mask when contacting people, refrained from shaking hands, washed hands, avoided people with signs and symptoms suggestive of COVID-19, and avoided crowded places as a practice of prevention. 37.6% of medical students showed positive attitudes about the participation of management of a COVID-19 patient. Most of the participants' decided to have a vaccine depending on its availability. But 31.5% had trust in natural immunity rather than vaccination. Most undergraduate Medical college students understood the basic information, possessed a positive attitude, and presented good practice towards the COVID-19 and vaccination. They play a crucial role in motivation and acceptance of vaccines among the general citizen to fight back against the pandemic in the country with limited resources.
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Affiliation(s)
- F Ahasan
- Dr Faizul Ahasan, Assistant Professor, Department of Pharmacology, Ibrahim Medical College, Dhaka, Bangladesh
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Ahmed T, Rahman N, Tasfia R, Farhana J, Hasan T, Sarwar N. Effects of Non-Thermal Processing Methods on Physicochemical, Bioactive, and Microbiological Properties of Fresh Pineapple (Ananas comosus L. Merr.) Juice. JFQHC 2022. [DOI: 10.18502/jfqhc.9.3.11150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Background: Pineapple juice processing is an art of preservation, and the processing technologies play important role in pineapple juice quality. Therefore, this study aimed to explore the potential impacts of non-thermal processing methods on the physicochemical, bioactive, and microbiological properties of fresh pineapple juice.
Methods: Extracted juices were subjected to several non-thermal processes including microwave processing, vacuum evaporation, mild pasteurization, pulsed electric field, and ultra-sonication. Physicochemical properties including Total Soluble Solids (TSS), pH, titratable acidity, and color; Total Phenolic Content (TPC); Total Anthocyanin Content (TAC); antioxidant capacity; and microbiological properties were evaluated. Data were statistically analyzed by Minitab statistical software (version: 18.1).
Results: TSS, pH, acidity (%) of processed juices ranged from 11.03-12.03, 4.07-4.27, and 0.42-0.49, respectively. In terms of color properties both ultra-sonication and microwave processing showed the highest values of L (luminosity), a* (redness), and b* (yellow). The highest TPC was reported in ultra-sonication treatment 11.996±0.002 mg Gallic Acid Equivalents (GAE)/100 ml. The TAC varied from 0.179-0.235 mg Total Anthocyanin (TA)/100 ml, where ultra-sonication and mild pasteurization treatment yielded the highest and lowest contents, respectively.
Conclusion: Perfect phenolic content, antioxidant capacity, retention of anthocyanin content, and attractive color in pineapple juices when treated with non-thermal techniques.
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Ren J, Qu R, Rahman N, Lewis J, King A, Liao X. LB884 Integrated transcriptome and trajectory analysis of cutaneous T-cell lymphoma identifies putative precancer populations. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Abstract
OBJECTIVE Although the elderly population remains at high risk for tuberculosis, studies addressing tuberculous meningitis (TBM) in this age group are scarce. The present study aimed to evaluate the spectrum and outcome of geriatric TBM and document differences between older and young patients. METHODS A prospective cohort study was conducted in the adult TBM patients admitted at PGIMER, Chandigarh (India). Consecutive older patients aged 60 years and above were enrolled from January 2019 to December 2020, and young adults aged 18-59 years were enrolled from July 2019 to December 2019. RESULTS Fifty-five older patients with a mean age of 66.6 years and 73 young patients with a mean age of 35.1 years were enrolled. At admission, older patients were more likely to have altered mental status (96.4% vs. 78.1%, P = 0.003) and advanced disease with British medical research council staging 2 or 3 (98.2% vs. 89.0%, P = 0.043); however, headache (38.2% vs. 67.1%, P = 0.001), vomiting (18.2% vs. 35.6%, P = 0.030) and fever (80.0% vs. 91.8%, P = 0.052) were less common. Cerebrospinal fluid (CSF) abnormalities were less marked in older patients, with a significant difference in median total cells (70 vs. 110/µl, P = 0.013). Hydrocephalous and infarct were common neuroimaging abnormalities in both groups; however, tuberculomas were significantly less in the elderly (15.1% vs. 35.2%, P = 0.012). Older patients had a significantly low survival rate (56.4% vs. 76.7%, P = 0.021). CONCLUSION Significant differences in clinical, CSF and radiological characteristics exist between elderly and young TBM patients, with survival remains dismal in the elderly.
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Affiliation(s)
- N Rahman
- From the 1Department of Internal Medicine, Postgraduate Institute of Medical Education and Research, Nehru Hospital, 4th floor, F block, Sector 12, Chandigarh 160012, India
| | - A K Pannu
- From the 1Department of Internal Medicine, Postgraduate Institute of Medical Education and Research, Nehru Hospital, 4th floor, F block, Sector 12, Chandigarh 160012, India
| | - R Yadav
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research, Research Block A, Sector 12, Chandigarh 160012, India
| | - S Sethi
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research, Research Block A, Sector 12 , Chandigarh 160012, India
| | - A Saroch
- From the 1Department of Internal Medicine , Postgraduate Institute of Medical Education and Research, Nehru Hospital, 4th floor, F block, Sector 12, Chandigarh 160012, India
| | - M Garg
- Department of Radiodiagnosis, Postgraduate Institute of Medical Education and Research, Nehru Hospital, Sector 12, Chandigarh 160012, India
| | - D Kumar
- From the 1Department of Internal Medicine, Postgraduate Institute of Medical Education and Research, Nehru Hospital, 4th floor, F block, Sector 12, Chandigarh 160012, India
| | - A Bhalla
- From the 1Department of Internal Medicine, Postgraduate Institute of Medical Education and Research, Nehru Hospital, 4th floor, F block, Sector 12, Chandigarh 160012, India
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Sun J, Wu G, Pastor F, Rahman N, Wang WH, Zhang Z, Merle P, Hui L, Salvetti A, Durantel D, Yang D, Andrisani O. RNA helicase DDX5 enables STAT1 mRNA translation and interferon signalling in hepatitis B virus replicating hepatocytes. Gut 2022; 71:991-1005. [PMID: 34021034 PMCID: PMC8606016 DOI: 10.1136/gutjnl-2020-323126] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 05/09/2021] [Indexed: 12/18/2022]
Abstract
OBJECTIVE RNA helicase DDX5 is downregulated during HBV replication and poor prognosis HBV-related hepatocellular carcinoma (HCC). The objective of this study is to investigate the role of DDX5 in interferon (IFN) signalling. We provide evidence of a novel mechanism involving DDX5 that enables translation of transcription factor STAT1 mediating the IFN response. DESIGN AND RESULTS Molecular, pharmacological and biophysical assays were used together with cellular models of HBV replication, HCC cell lines and liver tumours. We demonstrate that DDX5 regulates STAT1 mRNA translation by resolving a G-quadruplex (rG4) RNA structure, proximal to the 5' end of STAT1 5'UTR. We employed luciferase reporter assays comparing wild type (WT) versus mutant rG4 sequence, rG4-stabilising compounds, CRISPR/Cas9 editing of the STAT1-rG4 sequence and circular dichroism determination of the rG4 structure. STAT1-rG4 edited cell lines were resistant to the effect of rG4-stabilising compounds in response to IFN-α, while HCC cell lines expressing low DDX5 exhibited reduced IFN response. Ribonucleoprotein and electrophoretic mobility assays demonstrated direct and selective binding of RNA helicase-active DDX5 to the WT STAT1-rG4 sequence. Immunohistochemistry of normal liver and liver tumours demonstrated that absence of DDX5 corresponded to absence of STAT1. Significantly, knockdown of DDX5 in HBV infected HepaRG cells reduced the anti-viral effect of IFN-α. CONCLUSION RNA helicase DDX5 resolves a G-quadruplex structure in 5'UTR of STAT1 mRNA, enabling STAT1 translation. We propose that DDX5 is a key regulator of the dynamic range of IFN response during innate immunity and adjuvant IFN-α therapy.
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Affiliation(s)
- Jiazeng Sun
- Basic Medical Sciences, Purdue University, West Lafayette, Indiana, USA
| | - Guanhui Wu
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana, USA
| | - Florentin Pastor
- International Center for Infectiology Research (CIRI), INSERM U1111-CNRS UMR5308, Lyon, France
| | - Naimur Rahman
- Basic Medical Sciences, Purdue University System, West Lafayette, Indiana, USA
| | - Wen-Hung Wang
- Gene Editing Core, Bindley Biosciences Center, Purdue University, West Lafayette, Indiana, USA
| | - Zhengtao Zhang
- Department of Biochemistry and Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Shanghai, China
| | - Philippe Merle
- Service d'Hépatologie, Hôpital de La Croix-Rousse Centre Livet, Lyon, Rhône-Alpes, France
| | - Lijian Hui
- Department of Biochemistry and Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Shanghai, China
| | - Anna Salvetti
- International Center for Infectiology Research (CIRI), INSERM U1111-CNRS UMR5308, Lyon, France
| | - David Durantel
- INSERM U1111-CNRS UMR5308 International Center for Infectiology Research (CIRI), Lyon, France
| | - Danzhou Yang
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana, USA
| | - Ourania Andrisani
- Basic Medical Sciences, Purdue University, West Lafayette, Indiana, USA
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Tasnim A, Shamsuzzaman AK, Ferdose J, Khan FA, Rahman N. Current Trend of Aerobic Bacteria and Their Antimicrobial Susceptibility Pattern in Burn Wound Infection of A Tertiary Care Hospital, Rajshahi. Mymensingh Med J 2022; 31:431-436. [PMID: 35383763] [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
Burn injury is still a life-threatening event, associated with high mortality and morbidity inspite of recent advances and infection control practices. This cross sectional study was conducted at Microbiology department of Rajshahi Medical College (RMC), Bangladesh with the objective to provide an insight into the current trend of aerobic bacteria with their antibiogram in burn wound infected patients admitted in Burn and Plastic Surgery Unit of RMCH from 1st January 2016 to 31st December 2016. A total of 212 wound swabs were collected and processed as per standard protocol. The isolates were identified by standard microbiological techniques and antimicrobial susceptibility was performed by Modified Kirby-Bauer disk diffusion method. Burn injurywas highest (44.81%) in age group 21-30 years in fire related burn patients (41.98%) and female were predominant (59.91%). Among 212 samples 89.62% yielded growth and 196 bacterial species were isolated in which P. aeruginosa were the predominant organism (34.18%) followed by Proteus spp. (23.47%), Klebsiella spp. (14.80%), E. coli (11.73%), S. aureus (10.71%), Acinetobacter spp. & CoNS (2.04%) and Enterobacter spp. (1.03%). In this study meropenem, amikacin and vancomycin were highly sensitive drugs but 3rd generation cephalosporin and ciprofloxacin showed resistance. Therefore continuous microbiological surveillance and careful in vitro testing prior to antibiotic treatment is required to reduce the emergence of multidrug resistant pathogens.
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Affiliation(s)
- A Tasnim
- Dr Anika Tasnim, Assistant Professor, Department of Microbiology, Parkview Medical College, Sylhet, Bangladesh; E-mail:
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Javed M, Rahman N, Adnan G, Nizar Z, Shah I. Differing radiation exposure in scrub technicians and rotating staff in cardiac catheterization laboratory: occupation matters. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehab849.174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Radiation exposure of cardiac catheterization lab personnel is an evolving area of concern, due to long term, repetitive exposure causing deterministic and stochastic effects(1,2). Current radiation protection measures are based on increasing distance, shielding from fluoroscopy source and depend on primary operator behavior(3)
Effective dose(ED) in micro Sieverts( μSv) as a measure of individual absorbed radiation dose provides feedback as to occupational exposure and risks. Dosimeter badges worn over equipment measure ED correlating with radiation exposure of areas unprotected by standard lead apron such as head, neck, lens and upper limbs. (4)
Most studies focus on primary operator exposure (5,6,7), overlooking non physician staff comprising scrub technicians working as assistants to primary operator physicians, and rotating staff involved in peri-procedural care of patients.
Purpose
This study aimed to find out ED acquired by scrub technicians(ED.S) and rotating staff(ED.R) in interventional cardiology and invasive electrophysiology procedures, utilizing external dosimeters worn over lead aprons.
Methods
We prospectively collected radiation data over forty six invasive Cardiology procedures from 15th March 2021 to 1st June 2021 comprising fourteen diagnostic coronary and graft angiograms, seventeen combined diagnostic and interventional cardiology procedures, nine sole percutaneous coronary interventions and six electrophysiology procedures. Nine staff members: two female and seven male members participated as scrub technicians and rotating staff, provided with external dosimeter badges. ED was obtained by logging in dosimeter badges into pre calibrated monitors.
Results
Significantly high mean ED was acquired by rotating staff as compared to scrub technicians, mean ED.R:21.04 μSv( SD: +/-39.64) and mean ED.S: 7.54 μSv( SD:+/- 17.23), this three fold difference in radiation exposure was statistically significant with a p-value of 0.03.
This was consistent across procedure groups, with rotating staff acquiring higher ED compared to their scrub technician colleagues in diagnostic, interventional and electrophysiology cases. Statistically significant differences in radiation exposure of both staff groups were demonstrated in diagnostic and interventional cardiology procedures, with p-values of 0.04 and 0.01 respectively.(See Table)
Conclusion
This small, single center study highlights occupational role as a significant factor in varying radiation exposure amongst non-physician staff . Higher ED was attributed to rotating staff duties involving proximity and mobility around fluoroscopy source and patient, devoid of protective lead shields.
Based on these findings, avoiding fluoroscopy use while staff performs duties involving proximity to patient such is mandatory. Other essential measures should include accessory left sided leads shields, mandatory protective lens and head shields for rotating staff. Abstract Table
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Affiliation(s)
- M Javed
- Aga Khan University Hospital, Karachi, Pakistan
| | - N Rahman
- Aga Khan University Hospital, Karachi, Pakistan
| | - G Adnan
- Aga Khan University Hospital, Karachi, Pakistan
| | - Z Nizar
- Aga Khan University Hospital, Karachi, Pakistan
| | - I Shah
- Aga Khan University Hospital, Karachi, Pakistan
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12
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Rahman N, Sun J, Li Z, Pattnaik A, Mohallem R, Wang M, Kazemian M, Aryal UK, Andrisani O. The cytoplasmic LSm1-7 and nuclear LSm2-8 complexes exert opposite effects on Hepatitis B virus biosynthesis and interferon responses. Front Immunol 2022; 13:970130. [PMID: 36016928 PMCID: PMC9396650 DOI: 10.3389/fimmu.2022.970130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 07/15/2022] [Indexed: 12/12/2022] Open
Abstract
Despite many studies on host or viral gene expression, how the cellular proteome responds to internal or external cues during the infection process remains unclear. In this study, we used a Hepatitis B Virus (HBV) replication model and performed proteomic analyses to understand how HBV evades innate immunity as a function of cell cycle progression. Specifically, we performed proteomic analyses of HBV-replicating cells in G1/S and G2/M phases, as a function of IFN-α treatment. We identified that the conserved LSm (Like-Sm1-8) proteins were differentially regulated in HBV replicating cells treated with IFN-α. Specifically, in G2/M phase, IFN-α increased protein level of LSm1, the unique subunit of cytoplasmic LSm1-7 complex involved in mRNA decay. By contrast, IFN-α decreased LSm8, the unique subunit of nuclear LSm2-8 complex, a chaperone of U6 spliceosomal RNA, suggesting the cytoplasmic LSm1-7 complex is antiviral, whereas the nuclear LSm2-8 complex is pro-viral. In HBV replication and infection models, siRNA-mediated knockdown of LSm1 increased all viral RNAs. Conversely, LSm8 knockdown reduced viral RNA levels, dependent on N6-adenosine methylation (m6A) of the epsilon stem-loop at the 5' end of pre-Core/pregenomic (preC/pg) RNA. Methylated RNA immunoprecipitation (MeRIP) assays demonstrated reduced viral RNA methylation by LSm8 knockdown, dependent on the 5' m6A modification, suggesting the LSm2-8 complex has a role in mediating this modification. Interestingly, splicing inhibitor Cp028 acting upstream of the LSm2-8 complex suppressed viral RNA levels without reducing the 5' m6A modification. This observation suggests Cp028 has novel antiviral effects, likely potentiating IFN-α-mediated suppression of HBV biosynthesis.
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Affiliation(s)
- Naimur Rahman
- Department of Basic Medical Sciences, Purdue University, West Lafayette, IN, United States.,Purdue Center for Cancer Research, Purdue University, West Lafayette, IN, United States
| | - Jiazeng Sun
- Department of Basic Medical Sciences, Purdue University, West Lafayette, IN, United States.,Purdue Center for Cancer Research, Purdue University, West Lafayette, IN, United States
| | - Zhili Li
- Department of Basic Medical Sciences, Purdue University, West Lafayette, IN, United States.,Purdue Center for Cancer Research, Purdue University, West Lafayette, IN, United States
| | - Aryamav Pattnaik
- Purdue Center for Cancer Research, Purdue University, West Lafayette, IN, United States.,Department of Biochemistry, Purdue University, West Lafayette, IN, United States
| | - Rodrigo Mohallem
- Purdue Proteomics Facility, Bindley Bioscience Center, Purdue University, West Lafayette, IN, United States.,Department of Comparative Pathobiology, Purdue University, West Lafayette, IN, United States
| | - Mengbo Wang
- Purdue Center for Cancer Research, Purdue University, West Lafayette, IN, United States.,Department of Biochemistry, Purdue University, West Lafayette, IN, United States
| | - Majid Kazemian
- Purdue Center for Cancer Research, Purdue University, West Lafayette, IN, United States.,Department of Biochemistry, Purdue University, West Lafayette, IN, United States.,Department of Computer Science, Purdue University, West Lafayette, IN, United States
| | - Uma K Aryal
- Purdue Proteomics Facility, Bindley Bioscience Center, Purdue University, West Lafayette, IN, United States.,Department of Comparative Pathobiology, Purdue University, West Lafayette, IN, United States
| | - Ourania Andrisani
- Department of Basic Medical Sciences, Purdue University, West Lafayette, IN, United States.,Purdue Center for Cancer Research, Purdue University, West Lafayette, IN, United States
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13
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Lundin K, Sepponen K, Väyrynen P, Liu X, Yohannes DA, Survila M, Ghimire B, Känsäkoski J, Katayama S, Partanen J, Vuoristo S, Paloviita P, Rahman N, Raivio T, Luiro K, Huhtaniemi I, Varjosalo M, Tuuri T, Tapanainen JS. OUP accepted manuscript. Mol Hum Reprod 2022; 28:6574364. [PMID: 35471239 PMCID: PMC9308958 DOI: 10.1093/molehr/gaac012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 03/11/2022] [Indexed: 11/14/2022] Open
Affiliation(s)
- K Lundin
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - K Sepponen
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - P Väyrynen
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - X Liu
- Molecular Systems Biology Research Group, Institute of Biotechnology & HiLIFE, University of Helsinki, Helsinki, Finland
- Proteomics Unit, Institute of Biotechnology & HiLIFE, University of Helsinki, Helsinki, Finland
| | - D A Yohannes
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Research Programs Unit, Translational Immunology & Department of Medical and Clinical Genetics, University of Helsinki, Helsinki, Finland
| | - M Survila
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - B Ghimire
- Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, Finland
| | - J Känsäkoski
- Department of Physiology, University of Helsinki, Helsinki, Finland
| | - S Katayama
- Folkhälsan Research Center, Helsinki, Finland
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
- Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - J Partanen
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - S Vuoristo
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - P Paloviita
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - N Rahman
- Institute of Biomedicine, University of Turku, Turku, Finland
- Department of Reproduction and Gynecological Endocrinology, Medical University of Bialystok, Bialystok, Poland
| | - T Raivio
- Department of Physiology, University of Helsinki, Helsinki, Finland
- Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- New Children's Hospital, Pediatric Research Center, Helsinki University Hospital, HUH, Helsinki, Finland
| | - K Luiro
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - I Huhtaniemi
- Institute of Biomedicine, University of Turku, Turku, Finland
- Department of Metabolism, Endocrinology and Reproduction, Faculty of Medicine, Hammersmith Campus, Imperial College London, London, UK
| | - M Varjosalo
- Molecular Systems Biology Research Group, Institute of Biotechnology & HiLIFE, University of Helsinki, Helsinki, Finland
- Proteomics Unit, Institute of Biotechnology & HiLIFE, University of Helsinki, Helsinki, Finland
| | - T Tuuri
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - J S Tapanainen
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Department of Obstetrics and Gynecology, University Hospital of Oulu, University of Oulu, Medical Research Center Oulu and PEDEGO Research Unit, Oulu, Finland
- Corresponding author. Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, PO Box 140, 00029 Helsinki, Finland. Tel: +358-94711; E-mail:
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14
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Khattak M, Sharoff L, Thomas-Fernandez K, Rahman N. 1170 Outcome of Various Fixation Techniques for Talo-Navicular Arthrodesis. Br J Surg 2021. [DOI: 10.1093/bjs/znab259.1028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Aim
The talonavicular (TN) forms part of the medial joint complex, which is involved in maintaining stability during the gait cycle Arthrodesis can be used to manage a range of deformities and to treat degenerative and inflammatory changes of the joint. The most significant complication is non-union, but chronic pain due to complex regional pain syndrome, or progressive arthritic changes can also occur. The aim was to evaluate the outcome of different methods of fixation used for TN arthrodesis in adults within the trust.
Method
This was a quality improvement project, looking retrospectively at inpatient surgeries over a 6-year period. Inpatient notes, operative notes, clinic letters and imaging were analysed. Treatment methods included IOFIX devices, cannulated screws, staples, plates and screws, and combined staples and screws. The sample included a total of 57 patients (42 females and 15 males).
Results
IOFIX had a 93% fusion rate, and a 27% complication rate. Cannulated screws had a 79% fusion rate, and a 46% complication rate. Screws and staples had a 75% union rate, and a 13% complication rate. Only one sample used plates and screws, which resulted in union and no complications. Using staples alone had a 78% union rate and a 11% complication rate.
Conclusions
The greatest union rate was achieved with IOFIX devices, followed by cannulated screws. Greatest complication rate was with cannulated screws, and lowest with the combined use of staples and screws. Highest rate of revision surgery was with cannulated screws. Recommendations included a switch to IOFIX devices for TN arthrodesis.
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Affiliation(s)
- M Khattak
- Worcestershire Acute Hospital Trust, Worcester, United Kingdom
| | - L Sharoff
- Worcestershire Acute Hospital Trust, Worcester, United Kingdom
| | | | - N Rahman
- Worcestershire Acute Hospital Trust, Worcester, United Kingdom
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15
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Munir MA, Tandiabang PA, Setyawati T, Basry A, Cyio AD, Rahman N. Bioethical perspective of convalescent plasma therapy for COVID-19: A systematic review. Transfus Clin Biol 2021; 28:271-275. [PMID: 33839300 PMCID: PMC8028602 DOI: 10.1016/j.tracli.2021.03.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 03/17/2021] [Accepted: 03/27/2021] [Indexed: 01/08/2023]
Abstract
Convalescent plasma therapy (CP) has long been used to prevent and treat various infectious diseases before COVID-19 such as SARS, MERS, and H1N1. Because the viral and clinical characteristics of COVID-19 share the similarities between SARS and MERS, CP treatment could be a promising treatment option to save COVID-19. With only low quality medical evidence, but massive media support and a very significant public demand for the use of convalescent plasma for COVID-19, we are now faced with an ethical dilemma. Therefore, this paper uses a structured analysis that focuses on the preferred reporting items for a systematic review of ethical issues regarding the use of Convalescent Plasma Therapy for COVID-19. The use of convalescent plasma must meet the ethical principles of autonomy; such as voluntary, informed consent, and confidentiality. Consideration of the risk-benefit ratio for potential donor recipients also needs to be considered in order to meet the beneficence and non-maleficence principles. The principle of justice also needs to be applied both to donors, donor recipients and health workers, such as determining the priority of donor recipients, due to the increasing demand for convalescent plasma amid the limited circumstances of patients who have recovered from Covid-19 who voluntarily donate.
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Affiliation(s)
- M A Munir
- Departement of Bioethics, Humanities and Social Health Science, Faculty of Medicine, Tadulako University, Palu, Indonesia; Departement of Orthopaedic and Traumatologi Surgery, Undata General Hospital, Palu, Indonesia.
| | - P A Tandiabang
- Department of Anatomy, Faculty of Medicine, Tadulako University, Palu, Indonesia
| | - T Setyawati
- Department of Biochemistry, Faculty of Medicine, Tadulako University, Palu, Indonesia
| | - A Basry
- Department of Biochemistry, Faculty of Medicine, Tadulako University, Palu, Indonesia
| | - A D Cyio
- Medical Profession Program, Faculty of Medicine, Tadulako University, Palu, Indonesia
| | - N Rahman
- Department of Statistics, Faculty of Mathematics and Natural Science, Tadulako University, Palu, Indonesia
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16
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Rahman N, Sandhu B, Eyeson J. A comparison of pre-radiotherapy extractions prior to and during the pandemic at charing cross hospital. Advances in Oral and Maxillofacial Surgery 2021. [DOI: 10.1016/j.adoms.2021.100088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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17
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Rahman N, Conn B. Evaluation of Histopathological Risk Model in a Cohort of Oral Squamous Cell Carcinoma Patients Treated with Accompanying Neck Dissection. Head Neck Pathol 2021; 15:1156-1161. [PMID: 33886072 PMCID: PMC8633176 DOI: 10.1007/s12105-021-01326-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 04/05/2021] [Indexed: 11/28/2022]
Abstract
To investigate the applicability of the validated histological risk model in a cohort of oral cavity squamous cell carcinoma patients treated concurrently with neck dissections. Primary tumours from 85 patients with primary excision of T1 and T2 Oral Squamous Cell Carcinomas (TNM 7th edition) including neck dissection were scored by three pathologists in consensus according to the validated risk model. The risk score data, along with traditional dataset values, were analysed to determine possible association with nodal metastasis and extracapsular spread. Seventy-two patients (54%) were classified with low or intermediate risk and 62 (46%) patients were 'high risk'. A chi squared test showed that cases with nodal metastasis were highly statistically significant with the overall risk model score (X2 = 22.62 p = 0.0001). None of the neck dissections from tumours with low risk score showed evidence of metastasis (NPV = 100%) suggesting the risk score may also be a useful tool for predicting an absence of metastasis. Risk assessment of low-stage oral squamous cell carcinoma primary tumours may be predictive of the presence or absence of metastasis at presentation. Knowledge of the risk score and its constituent parts may inform treatment decisions at multidisciplinary meetings. Low risk squamous cell carcinoma may be a rare variant with low metastatic potential and excellent long-term survival.
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Affiliation(s)
- N. Rahman
- Edinburgh Dental Institute, Lauriston Building, Lauriston Place, Edinburgh, EH3 9HA UK
| | - B. Conn
- Royal Infirmary of Edinburgh, 51 Little France Crescent, Old Dalkeith Road, Edinburgh, EH16 4SA UK
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18
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Rahman N, Halls BR, Matusik KE, Meyer TR, Kastengren AL. Evaluation of liquid-phase thermometry in impinging jet sprays using synchrotron x-ray scattering. Appl Opt 2021; 60:2967-2973. [PMID: 33983189 DOI: 10.1364/ao.417796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 03/17/2021] [Indexed: 06/12/2023]
Abstract
Liquid thermometry during primary and secondary breakup of liquid sprays is challenging due to the presence of highly dynamic, optically complex flow features. This work evaluates the use of x-ray scattering from a focused, monochromatic beam of the Advanced Photon Source at Argonne National Laboratory for the measurement of liquid temperatures within the mixing zone of an impinging jet spray. The measured scattering profiles are converted to temperature through a previously developed two-component partial least squares (PLS) regression model. Transmitive mixing during jet merging is inferred through spatial mapping of temperatures within the impingement region. The technique exhibits uncertainties of ±2K in temperature and 2% in capturing the correct scattering profile, showing its potential utility for probing liquid temperature distributions in multiphase flows.
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19
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Rahman N. A Hybrid Model of Prognostic Medication Up-Titration for Left Ventricular Systolic Dysfunction (LVSD) Post Myocardial Infarction Within a Cardiac Rehabilitation Program. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Dutta Choudhury S, Islam A, Abedin J, Hagan E, Shano S, Rahman N, Shermin R, Rahman Z, Shirin T, Daszak P, Sabrina Flora M, H Epstein J. Prevalence and genetic diversity of Coronavirus in human in Bangladesh. Int J Infect Dis 2020. [PMID: 33039608 PMCID: PMC7817406 DOI: 10.1016/j.ijid.2020.11.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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21
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Rahman N, Kumar D, Hampannavar MS, Jain A, Pannu AK. Classic miliary TB. QJM 2020; 113:504-505. [PMID: 31665471 DOI: 10.1093/qjmed/hcz270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- N Rahman
- Department of Internal Medicine, 4th floor, F block, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - D Kumar
- Department of Internal Medicine, 4th floor, F block, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - M S Hampannavar
- Department of Internal Medicine, 4th floor, F block, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - A Jain
- Department of Internal Medicine, 4th floor, F block, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - A K Pannu
- Department of Internal Medicine, 4th floor, F block, Post Graduate Institute of Medical Education and Research, Chandigarh, India
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22
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Iqbal MM, Rahman N, Alam M, Deb Nath PK, Waheed S, Islam K, Hossain RM, Chowdhury AA. Quality of Life Is Improved in Renal Transplant Recipients Versus That Shown in Patients With Chronic Kidney Disease With or Without Dialysis. EXP CLIN TRANSPLANT 2020; 18:64-67. [DOI: 10.6002/ect.tond-tdtd2019.p11] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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23
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Ferguson J, Alexander L, Kelly C, Chalmers A, Rahman N, Holme J, Grundy S, Ahmed L, Maskell N, Cowell G, Dick C, Tsim S, Hopkins T, Woodward R, Blyth K. Staging by Thoracoscopy in Potentially Radically Treatable Non-Small Cell Lung Cancer Associated with Minimal Pleural Effusion (STRATIFY) study: a prospective multicentre study. Lung Cancer 2020. [DOI: 10.1016/s0169-5002(20)30245-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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Ferguson K, Blyth K, Tsim S, Ferguson J, Mercer R, Rahman N, Maskell N, Evison M. An update regarding the Meso-ORIGINS feasibility study and the PREDICT-Meso Accelerator Network. Lung Cancer 2020. [DOI: 10.1016/s0169-5002(20)30193-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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Halls BR, Rahman N, Slipchenko MN, James JW, McMaster A, Ligthfoot MDA, Gord JR, Meyer TR. 4D spatiotemporal evolution of liquid spray using kilohertz-rate x-ray computed tomography. Opt Lett 2019; 44:5013-5016. [PMID: 31613251 DOI: 10.1364/ol.44.005013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 09/23/2019] [Indexed: 06/10/2023]
Abstract
Four-dimensional (x,y,z,t) x-ray computed tomography was demonstrated in an optically complex spray using an imaging system consisting of three x-ray sources and three high-speed detectors. The x-ray sources consisted of high-flux rotating anode x-ray tube sources that illuminated the spray from three lines of sight. The absorption, along each absorption path, was collected using a CsI phosphor plate and imaged by a high-speed intensified CMOS camera at 20 kHz. The radiographs were converted to a quantitative equivalent path length (EPL) of liquid using a variable attenuation coefficient to account for beam hardening. The EPL data were then reconstructed using the algebraic reconstruction technique into high-speed time sequences of the three-dimensional liquid mass distribution.
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26
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Rahman N. ES07.01 Transthoracic Ultrasonography. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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27
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Affiliation(s)
- C D Simpson
- Department of Oral Surgery, Edinburgh Dental Institute, UK.
| | - N Rahman
- Department of Oral Surgery, Edinburgh Dental Institute, UK.
| | - P-J Lamey
- Department of Oral Medicine, Edinburgh Dental Institute, UK.
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28
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Mccracken D, Mercer R, Bedawi E, Hassan M, Asciak R, Rahman N. Does pleural fluid volume influence adequacy of samples for immunohistochemistry or molecular testing? Lung Cancer 2019. [DOI: 10.1016/s0169-5002(19)30113-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Yoon S, Ahmad Bashah N, Wong S, Mariapun S, Padmanabhan H, Hassan T, Lim J, Lau S, Rahman N, Thong M, Ch'Ng G, Teo S, Bleiker E, Woo Y. Mainstreaming genetic counselling for genetic testing of BRCA1 and BRCA2 in ovarian cancer patients in Malaysia (MaGiC study). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy483.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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30
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Lim J, Lau S, Bashah NA, Lai K, Wen W, Hasan S, Park D, Pope B, Nguyen-Dumont T, Southey M, Rahman N, Woo Y, Thong M, Ch'ng G, Teo S, Yoon S. Frequency of BRCA1 and BRCA2 Germline Variants in Women With Ovarian Cancer in Malaysia. J Glob Oncol 2018. [DOI: 10.1200/jgo.18.50600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background: Germline BRCA1 or BRCA2 pathogenic variants in ovarian cancer patients may be informative in risk management and treatment, with the advent of poly(ADP-ribose) polymerase inhibitors. In the era of precision medicine, companion diagnostics for BRCA1 and BRCA2 genes have been featured as a strategy in the Malaysia National Strategic Plan for Cancer Control Program (2016-2020). To facilitate this strategy, frequency data from Malaysia's understudied multiethnic population will be required. Aim: To determine the prevalence of BRCA1 and BRCA2 germline variants in a population-based cohort of ovarian cancer patients in Malaysia. Methods: From August 2016, women with nonmucinous epithelial ovarian, peritoneal or fallopian tube carcinoma are prospectively recruited to the Malaysia-wide population-based MaGiC Observational Study. DNA were tested using a Hi-Plex next generation sequencing method and multiplex ligation-dependent probe amplification to detect < 10 bp alterations and exon deletions or duplications in the BRCA1 and BRCA2 genes. Results: Interim results from 325 patients tested until March 2018 have identified BRCA1 and BRCA2 pathogenic variants in 9.8% (32/325) and 3.1% (10/325) patients, respectively. Variants of uncertain significance were detected in 13.2% (43/325) patients and no pathogenic variants were detected in 73.8% (240/325) patients. Taken together, the frequency of BRCA1/2 pathogenic variants in ovarian cancer patients is approximately 12.9% (42/325). Conclusion: The identification of BRCA1 or BRCA2 carriers across the country have enabled the concentration of efforts from limited genetic counseling resources to high risk families. Results arising from the completion of this study will supplement cancer control programs and genetic services in Malaysia.
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Affiliation(s)
- J. Lim
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - S.Y. Lau
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | | | - K.N. Lai
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - W.X. Wen
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - S.N. Hasan
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - D.J. Park
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - B.J. Pope
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | | | | | - N. Rahman
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - Y.L. Woo
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - M.K. Thong
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - G.S. Ch'ng
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - S.H. Teo
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - S.Y. Yoon
- Cancer Research Malaysia, Subang Jaya, Malaysia
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31
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Washington M, Jerse A, Rahman N, Pilligua-Lucas M, Garges E, Latif N, Akhvlediani T. First description of a cefixime- and ciprofloxacin-resistant Neisseria gonorrhoeae isolate with mutations in key antimicrobial susceptibility-determining genes from the country of Georgia. New Microbes New Infect 2018; 24:47-51. [PMID: 29872530 PMCID: PMC5986167 DOI: 10.1016/j.nmni.2018.04.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/08/2018] [Accepted: 04/14/2018] [Indexed: 01/19/2023] Open
Abstract
Antimicrobial resistance in Neisseria gonorrhoeae is a global health problem. Enhanced international collaborative surveillance and disease control are needed to reduce the global burden of this important pathogen. Currently the antimicrobial resistance properties and molecular mechanisms of multidrug-resistant N. gonorrhoeae in the Republic of Georgia represent a significant knowledge gap. Here we report the isolation of a strain of N. gonorrhoeae exhibiting resistance to cefixime and ciprofloxacin with reduced susceptibility to penicillin and tetracycline from a patient being treated at a Georgian medical centre. Notably, this isolate was found to contain a mosaic penA allele and to harbour mutations in genes conferring susceptibility to the β-lactam, cephalosporin, fluoroquinolone, macrolide and penicillin classes of antibiotic. To our knowledge, this is the first report to describe the key mutations conferring the antimicrobial resistance properties of an isolate of N. gonorrhoeae from Georgia.
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Affiliation(s)
- M.A. Washington
- US Army Medical Research Directorate–Georgia (USAMRD-G), Tbilisi, Georgia
| | - A.E. Jerse
- Uniformed Services University of Health Sciences (USUHS), Bethesda, MD, USA
| | - N. Rahman
- Uniformed Services University of Health Sciences (USUHS), Bethesda, MD, USA
| | - M. Pilligua-Lucas
- Uniformed Services University of Health Sciences (USUHS), Bethesda, MD, USA
| | - E.C. Garges
- Uniformed Services University of Health Sciences (USUHS), Bethesda, MD, USA
| | - N.H. Latif
- US Army Medical Research Directorate–Georgia (USAMRD-G), Tbilisi, Georgia
| | - T. Akhvlediani
- US Army Medical Research Directorate–Georgia (USAMRD-G), Tbilisi, Georgia
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Vujovic N, Barr D, Bowen JJ, Byrne S, Chaloka V, Chellappa S, Heng S, Kelly LM, Kerlin K, Mistretta J, Nedeltcheva A, Qian J, Rahman N, Van Zee C, Scheer FA. 0118 Endogenous Circadian Rhythm In Diet-induced Thermogenesis In Humans. Sleep 2018. [DOI: 10.1093/sleep/zsy061.117] [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: 11/14/2022] Open
Affiliation(s)
- N Vujovic
- Harvard Medical School/Brigham and Women’s Hospital, Boston, MA
| | - D Barr
- Harvard Medical School/Brigham and Women’s Hospital, Boston, MA
| | - J J Bowen
- Harvard Medical School/Brigham and Women’s Hospital, Boston, MA
| | - S Byrne
- Harvard Medical School/Brigham and Women’s Hospital, Boston, MA
| | - V Chaloka
- Harvard Medical School/Brigham and Women’s Hospital, Boston, MA
| | - S Chellappa
- Harvard Medical School/Brigham and Women’s Hospital, Boston, MA
| | - S Heng
- Harvard Medical School/Brigham and Women’s Hospital, Boston, MA
| | - L M Kelly
- Harvard Medical School/Brigham and Women’s Hospital, Boston, MA
| | - K Kerlin
- Harvard Medical School/Brigham and Women’s Hospital, Boston, MA
| | - J Mistretta
- Harvard Medical School/Brigham and Women’s Hospital, Boston, MA
| | - A Nedeltcheva
- Harvard Medical School/Brigham and Women’s Hospital, Boston, MA
| | - J Qian
- Harvard Medical School/Brigham and Women’s Hospital, Boston, MA
| | - N Rahman
- Harvard Medical School/Brigham and Women’s Hospital, Boston, MA
| | - C Van Zee
- Harvard Medical School/Brigham and Women’s Hospital, Boston, MA
| | - F A Scheer
- Harvard Medical School/Brigham and Women’s Hospital, Boston, MA
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Yoon S, Bashah N, Wong S, Mariapun S, Hassan T, Padmanabhan H, Lim J, Lau S, Rahman N, Thong M, Ch'Ng G, Teo S, Bleiker E, Woo Y. Mainstreaming genetic counselling for genetic testing of BRCA1 and BRCA2 in ovarian cancer patients in Malaysia (MaGiC study). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx729.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Talwar A, Jenko N, Willaime J, Ather S, Hickes W, Pickup L, Rahman N, Kadir T, Gleeson F. P1.05-008 A Comparison of the Imaging Features of Early Stage Primary Lung Cancer in Patients Treated with Surgery, SABR and Microwave Ablation. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Imran KM, Rahman N, Yoon D, Jeon M, Lee BT, Kim YS. Cryptotanshinone promotes commitment to the brown adipocyte lineage and mitochondrial biogenesis in C3H10T1/2 mesenchymal stem cells via AMPK and p38-MAPK signaling. Biochim Biophys Acta Mol Cell Biol Lipids 2017; 1862:1110-1120. [PMID: 28807877 DOI: 10.1016/j.bbalip.2017.08.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 08/07/2017] [Accepted: 08/09/2017] [Indexed: 12/18/2022]
Abstract
Although white adipose tissue (WAT) stores triglycerides and contributes to obesity, brown adipose tissue (BAT) dissipates energy as heat. Therefore, browning of WAT is regarded as an attractive way to counteract obesity. Our previous studies have revealed that treatment with cryptotanshinone (CT) during adipogenesis of 3T3-L1 cells inhibits their differentiation. Here, we found that pretreatment of C3H10T1/2 mesenchymal stem cells with CT before exposure to adipogenic hormonal stimuli promotes the commitment of these mesenchymal stem cells to the adipocyte lineage as confirmed by increased triglyceride accumulation. Furthermore, CT treatment induced the expression of early B-cell factor 2 (Ebf2) and bone morphogenetic protein 7 (Bmp7), which are known to drive differentiation of C3H10T1/2 mesenchymal stem cells toward preadipocytes and to the commitment to brown adipocytes. Consequently, CT treatment yielded brown-adipocyte-like features as evidenced by elevated expression of brown-fat signature genes including Ucp1, Prdm16, Pgc-1α, Cidea, Zic1, and beige-cell-specific genes such as CD137, Hspb7, Cox2, and Tmem26. Additionally, CT treatment induced mitochondrial biogenesis through upregulation of Sirt1, Tfam, Nrf1, and Cox7a and increased mitochondrial mass and DNA content. Our data also showed that cotreatment with CT and BMP4 was more effective at activating brown-adipocyte-specific genes. Mechanistic experiments revealed that treatment with CT activated AMPKα and p38-MAPK via their phosphorylation: the two major signaling pathways regulating energy metabolism. Thus, these findings suggest that CT is a candidate therapeutic agent against obesity working via activation of browning and mitochondrial biogenesis in C3H10T1/2 mesenchymal stem cells.
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Affiliation(s)
- Khan Mohammad Imran
- Dept. of Microbiology, College of Medicine, Soonchunhyang University, Korea; Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Korea
| | - Naimur Rahman
- Dept. of Microbiology, College of Medicine, Soonchunhyang University, Korea; Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Korea
| | - Dahyeon Yoon
- Dept. of Microbiology, College of Medicine, Soonchunhyang University, Korea; Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Korea
| | - Miso Jeon
- Dept. of Microbiology, College of Medicine, Soonchunhyang University, Korea; Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Korea
| | - Byong-Taek Lee
- Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Korea; Dept. of Tissue Engineering, College of Medicine, Soonchunhyang University, Korea
| | - Yong-Sik Kim
- Dept. of Microbiology, College of Medicine, Soonchunhyang University, Korea; Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Korea.
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Rima FA, Hussain M, Haque N, Dewan RK, Rahman N, Jinnah MA, Jeba R, Chowdhury F. HER2 status in Gastric and Gastroesophageal Junction Adenocarcinoma. Mymensingh Med J 2017; 26:372-379. [PMID: 28588175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Gastric carcinoma is a biologically heterogenous disease and survival varies among the patients with same stage. Recent studies have shown that a subset of gastric and gastroesophageal junction adenocarcinoma over express the HER2/neu protein and these patients can be treated by monoclonal antibody against HER2/neu protein. The purpose of this study was to detect the frequency of HER2 expression in gastric and gastroesophageal junction adenocarcinoma and to evaluate the relationship between HER2 expression and clinicopathological features in these patients. This descriptive cross sectional study was carried out at the Department of Pathology, Dhaka Medical College, from January 2013 to December 2014. A total of 130 patients with primary gastric and gastroesophageal junction adenocarcinomas were included in this study. All the cases were evaluated for routine histological examination and immunohistochemical examination was done for HER2/neu protein. Among the 130 cases, HER2 over expression was found in 12.3% cases and was more frequent in gastroesophageal junction (28%) than in gastric carcinoma (8.6%) (P=0.026). HER2 positivity was found significantly more in intestinal type carcinoma (19%), papillary carcinoma (63%) and in fungating growth pattern (P=0.003, 0.001 and 0.001 respectively). HER2 expression was also positive in grade-I or grade-II tumor but negative in grade-III tumor (P=0.001). No significant association of HER2 expression was found with age, sex, lymph node metastasis and extent of tumor. In conclusion it can be stated that gastric and gastroesophageal junction adenocarcinoma of intestinal type or papillary and tubular type with well to moderate differentiation can be targeted for therapy using Herceptin.
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Affiliation(s)
- F A Rima
- Dr Fahmida Akter Rima, Lecturer, Department of Pathology, Dhaka Medical College (DMC), Dhaka, Bangladesh
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Kanellakis NI, Giannou A, Pepe M, Agalioti T, Zazara D, Vreka M, Lilis I, Giopanou I, Spella M, Marazioti A, Rahman N, Pavord I, Psallidas I, Stathopoulos GT. S7 Mouse lung adenocarcinoma cell lines reveal PRL2C2 as a novel lung tumour promoter. Thorax 2016. [DOI: 10.1136/thoraxjnl-2016-209333.13] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Rahman N, Jeon M, Kim YS. Methyl gallate, a potent antioxidant inhibits mouse and human adipocyte differentiation and oxidative stress in adipocytes through impairment of mitotic clonal expansion. Biofactors 2016; 42:716-726. [PMID: 27412172 DOI: 10.1002/biof.1310] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [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: 03/29/2016] [Revised: 05/30/2016] [Accepted: 06/05/2016] [Indexed: 01/31/2023]
Abstract
Methyl gallate (MG) is a derivative of gallic acid and a potent antioxidant. In this study, we confirmed that MG treatment effectively inhibits lipid accumulation, which occurred mostly in the early stages of adipogenesis. We also showed that shortly after adipogenic induction, MG facilitated a G0/G1 cell cycle arrest. Mechanistic studies revealed that MG treatment inhibited ERK1/2 phosphorylation, which is a key regulator of the G1- to S-phase transition. Furthermore, MG treatment prevented the adipogenic hormonal stimuli-induced inhibition of the cyclin-dependent kinase inhibitor p27Kip1 . This led to inhibition of the transcription factor E2F1 by preventing the phosphorylation of, and thereby activation of its destruction partner RB. MG treatment also downregulated factors that are upstream of RB-E2F1 signaling such as Cdk2, Cyclin E, Cdk4, and Cyclin D1 where Cyclin D3 level was unaffected. We also found that MG treatment markedly decreased the expression and phosphorylation of C/EBPβ, by phosphorylating, and therefore inactivating, GSK3β, which is a prerequisite for its DNA binding capacity, and thereby mitotic clonal expansion (MCE). Ultimately, MG treatment downregulates key terminal adipogenic transcription factors including C/EBPα, PPARγ, aP2 (Fabp4), and adiponectin. Moreover, MG also protects adipocytes from oxidative stress by alleviating intracellular reactive oxygen species and activating Nrf2, HO-1, and PRDX3. Thus, this study provides a mechanistic insight into the anti-adipogenic actions of MG. © 2016 BioFactors, 42(6):716-726, 2016.
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Affiliation(s)
- Naimur Rahman
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam, 330-090, Korea
- Institute of Tissue Engineering, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam, 330-090, Korea
| | - Miso Jeon
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam, 330-090, Korea
- Institute of Tissue Engineering, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam, 330-090, Korea
| | - Yong-Sik Kim
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam, 330-090, Korea
- Institute of Tissue Engineering, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam, 330-090, Korea
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Jeon M, Rahman N, Kim YS. Cytoprotective Effect of Makgeolli Lees on Paraquat Induced Oxidative Stress in A549 Cells via Activation of NRF2 and Antioxidant Genes. J Microbiol Biotechnol 2016; 26:277-86. [PMID: 26597533 DOI: 10.4014/jmb.1510.10093] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Makgeolli lees (ML) has several physiological effects such as antioxidant, antidiabetic, and anticancer properties, but its biological functions have not been determined definitively. Here, we tested whether ML has a cytoprotective effect on paraquat (PQ)-induced oxidative stress in the human lung carcinoma cell line A549. At 0.1 mg/ml ML, viability of PQ-exposed A549 cells was restored by 12.4%, 18.5%, and 48.6% after 24, 48, and 72 h, respectively. ML also reduced production of the intracellular reactive oxygen species (ROS) that were generated by PQ treatment. Further experiments revealed that ML treatment enhanced the expression and nuclear translocation of nuclear factor erythroid 2-related factor 2 (NRF2) as well as ARE-GFP reporter activity. ML treatment also effectively increased the expression of NRF2's target genes NAD(P)H dehydrogenase quinone 1 (NQO1) and heme oxygenase 1 (HO-1). Moreover, we found that expression of cytoprotective genes, including glutathione peroxidases (GPXs), superoxide dismutase (SOD1), catalase (CAT), peroxiredoxin 3 (PRDX3), and peroxiredoxin 4 (PRDX4), was greatly enhanced by treatment with ML during PQ exposure. Taken together, the data suggest that treatment of PQ-exposed A549 cells with ML ameliorates cytotoxicity through induction of NRF2 expression and its target genes HO-1, NQO1, and other antioxidant genes. Thus, ML may serve as a functional food applicable to ROS-mediated human diseases.
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Affiliation(s)
- Miso Jeon
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan 31151, Republic of Korea
| | - Naimur Rahman
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan 31151, Republic of Korea.,Institute of Tissue Engineering, College of Medicine, Soonchunhyang University, Cheonan 31151, Republic of Korea
| | - Yong-Sik Kim
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan 31151, Republic of Korea.,Institute of Tissue Engineering, College of Medicine, Soonchunhyang University, Cheonan 31151, Republic of Korea
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Jeon M, Rahman N, Kim YS. Wnt/β-catenin signaling plays a distinct role in methyl gallate-mediated inhibition of adipogenesis. Biochem Biophys Res Commun 2016; 479:22-7. [PMID: 27592552 DOI: 10.1016/j.bbrc.2016.08.178] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [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: 08/18/2016] [Accepted: 08/31/2016] [Indexed: 01/14/2023]
Abstract
The canonical Wnt/β-catenin signaling not only features in many developmental processes but also recently emerged as an attractive negative regulator of differentiation of preadipocytes into adipocytes. Here, we show that β-catenin signaling plays a distinct role in methyl gallate (MG)-mediated inhibition of 3T3-L1 adipocytes differentiation. We found that the expression of β-catenin decreased after adipogenic hormonal induction, whereas incubation of the differentiating cells with a physiological concentration of MG during adipogenic hormonal induction significantly prevented β-catenin degradation by activating Wnt signaling components such as Wnt1, Wnt10b, Fzd1, Fzd2, Lrp5, Lrp6, Dvl1, and Dvl2. Mechanistic experiments revealed that MG treatment during early adipocytic differentiation specifically inhibited degradation of β-catenin caused by phosphorylation at serine-33. In addition, MG treatment led to phosphorylation of GSK3β, which is one of β-catenin-degrading enzymes. Consequently, MG treatment facilitated translocation of the stabilized β-catenin from the cytoplasm to nucleus, and activates its target genes cyclin D1 and c-Myc. Furthermore, MG-induced stabilization of β-catenin suppresses PPARγ expression. Moreover, pharmacological activation or inhibition of β-catenin signaling during adipocytes differentiation decreased and increased, respectively, the level of the key adipogenic marker, PPARγ, and of its downstream targets, aP2 and adiponectin while MG treatment effectively reversed their expression level. Collectively, our data suggest that MG is a novel pharmacological stimulator of canonical Wnt/β-catenin signaling, and therefore represents a promising therapeutic agent in obesity.
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Affiliation(s)
- Miso Jeon
- Department of Microbiology, College of Medicine, Soonchunhyang University, South Korea; Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, South Korea
| | - Naimur Rahman
- Department of Microbiology, College of Medicine, Soonchunhyang University, South Korea; Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, South Korea
| | - Yong-Sik Kim
- Department of Microbiology, College of Medicine, Soonchunhyang University, South Korea; Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, South Korea.
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Nabi S, Islam A, Rahman N. Ion-Exchange Equilibria of Transition Metals and Potassium Ions on an Inorganic Ion-Exchanger: Zirconium(IV) Iodophosphate. ADSORPT SCI TECHNOL 2016. [DOI: 10.1177/026361749901700802] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- S.A. Nabi
- Analytical Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh-202 002, India
| | - A. Islam
- Analytical Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh-202 002, India
| | - N. Rahman
- Analytical Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh-202 002, India
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Rahman MA, Zaman MM, Rahman MM, Moniruzzaman M, Ahmed B, Chhobi FK, Rahman N, Akter MR. Effects of Intensive versus Non-Intensive Physical Therapy on Children with Cerebral Palsy. Mymensingh Med J 2016; 25:421-424. [PMID: 27612885] [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
Cerebral Palsy (CP) is one of the most common causes of all childhood disorders. There are tone, posture and movements difficulty due to non-progressive damage to the immature brain in CP. The hallmark of CP is a disability in the development of gross motor function (GMF). The influence of gross motor development on fine motor development is more important in early developmental period, specially under three years old and in children with CP. Various therapeutic interventions have been used in the management of GMF development. Among them physical therapy is the most common intervention in CP and is usually a component of mandated programs. Physical therapy means physical stimulations in the form of various therapeutic exercises, touch, massage, limbs and trunk movement, balancing and coordination training, gait and ambulation training, cognitive stimulation as well as speech, language and occupational therapy. Our study focused to see the effect by short term intensive versus non-intensive physical therapy on children GMF development by using gross motor function measure (GMFM) Score sheet, GMFM-88, version 1.0. Study provides the information that physical therapy intervention is effective in GMF development and intensive interventions are more effective in children with spastic CP than non-intensive one. Study also inform that the more early treatment the more effective result.
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Affiliation(s)
- M A Rahman
- Dr Mohammad Azizur Rahman, Registrar, Department of Physical Medicine and Rehabilitation (PMR), Mymensingh Medical College Hospital (MMCH), Mymensingh, Bangladesh; E-mail:
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van Roon Y, Kirwin C, Rahman N, Vinayakarao L, Melson L, Kester N, Pathak S, Pradhan A. Comparison of Obstetric anal sphincter injuries (OASIS) in nulliparous women before and after introduction of the EPISCISSORS-60® at two Hospitals in the United Kingdom. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1583793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Rahman N, Jeon M, Song HY, Kim YS. Cryptotanshinone, a compound of Salvia miltiorrhiza inhibits pre-adipocytes differentiation by regulation of adipogenesis-related genes expression via STAT3 signaling. Phytomedicine 2016; 23:58-67. [PMID: 26902408 DOI: 10.1016/j.phymed.2015.12.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 12/01/2015] [Accepted: 12/07/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND Cryptotanshinone (CT), a major tanshinone found in Salvia miltiorrhiza Bunge (Lamiaceae), has various pharmacological effects such as antitumor, anti-inflammatory, and antioxidant properties. Despite its well-documented benefits in a wide range of diseases, the effect of CT on adipocyte differentiation has not been well characterized. PURPOSE The present study was designed to determine the in vitro anti-adipogenic effect and underlying molecular mechanisms of CT using 3T3-L1 murine pre-adipocytes. METHODS We measured the levels of intracellular triglyceride accumulation and mRNA and protein expression of key adipogenic transcription factors and their target genes. RESULTS Treatment with CT drastically reduced lipid accumulation in a dose- and time-dependent manner. Molecular assays showed that CT effectively suppressed the expression of C/EBPβ, C/EBPα, and PPARγ and of their target adipocyte-specific genes aP2, adiponectin, and GLUT4 but activated the expression of anti-adipogenic genes such as GATA2, CHOP10, and TNF-α. CT treatment also inhibited the phosphorylation of STAT3 in the early phase of adipogenesis. A small-interfering-RNA-mediated knock-down of STAT3 potentiated the anti-adipogenic effect of CT. CONCLUSION Taken together, the results suggest that CT may be a good anti-adipogenic candidate because it regulates STAT3 during early adipogenesis.
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Affiliation(s)
- Naimur Rahman
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, Korea
| | - Miso Jeon
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, Korea
| | - Ho-Yeon Song
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, Korea
| | - Yong-Sik Kim
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, Korea; Institute of Tissue Engineering, College of Medicine, Soonchunhyang University, Cheonan, Korea.
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Rahman N, Jeon M, Kim YS. Delphinidin, a major anthocyanin, inhibits 3T3-L1 pre-adipocyte differentiation through activation of Wnt/β-catenin signaling. Biofactors 2016; 42:49-59. [PMID: 26816335 DOI: 10.1002/biof.1251] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 10/14/2015] [Accepted: 11/02/2015] [Indexed: 11/08/2022]
Abstract
Delphinidin (Del) is a major anthocyanin that is widely found in pigmented fruits and vegetables. Herein, we investigated the antiadipogenic effect and the molecular mechanism by which Del affects 3T3-L1 preadipocyte differentiation. We found that Del effectively reduced intracellular lipid accumulation and promoted lipolysis while regulating the expression of adipogenic transcription factors and their target genes. This lipid lowering effect of Del was largely limited to the early phase of adipogenesis, which is governed by the delayed cell cycle progression due to G1 cell cycle arrest. Subsequently, Del suppressed the expression of early adipogenic transcription factors, such as C/EBPβ and C/EBPδ, as well as that of intermediate markers, C/EBPα, PPARγ, and the PPARγ-target adipocyte markers adiponectin and aP2 (FABP4). Furthermore, Del treatment activated Wnt1, Wnt10b, the Wnt receptor Fzd2, and the coreceptors Lrp5/6, while it inactivated Gsk3β, a member of the β-catenin destruction complex. Moreover, Del treatment stabilized cytoplasmic β-catenin levels and promoted its nuclear translocation, with subsequent activation of the expression of its downstream target genes, c-Myc and cyclin D1. Our findings therefore suggest that Del can effectively inhibit adipogenesis followed by the stabilization of β-catenin during early 3T3-L1 differentiation via inhibition of its destructive complexes and activation of Wnt signaling, and may thus be a promising candidate for the prevention of metabolic diseases, including obesity.
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Affiliation(s)
- Naimur Rahman
- Department of Microbiology, College of Medicine, Soonchunhyang University, Chung-nam, 330-090, Korea
| | - Miso Jeon
- Department of Microbiology, College of Medicine, Soonchunhyang University, Chung-nam, 330-090, Korea
| | - Yong-Sik Kim
- Department of Microbiology, College of Medicine, Soonchunhyang University, Chung-nam, 330-090, Korea
- Institute of Tissue Engineering, College of Medicine, Soonchunhyang University, Chung-nam, 330-090, Korea
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Meyding-Lamadé U, Craemer E, Lim J, Khalsum U, Abdul H, Idris F, Rahman N, Diah S, Muharram H. Investigation of coagulation behavior using Rotational Thromboelastometry (Rotem®) in patients with neuroinfectious diseases. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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McDowell M, Hossain M, Rahman N, Tegenfeldt K, Yasmin N, Johnson MG, Hamilton CD. Expanding tuberculosis case notification among marginalized groups in Bangladesh through peer sputum collection. Public Health Action 2015; 5:119-21. [PMID: 26400382 DOI: 10.5588/pha.15.0014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 04/24/2015] [Accepted: 05/02/2015] [Indexed: 11/10/2022] Open
Abstract
Case notification rates of tuberculosis (TB) in Bangladesh remain poor despite a high burden of disease. Peer sputum collection among underserved populations was implemented to expand case notification and to provide socially empowering roles in society for often excluded members of marginalized populations. Over the 55 months of the evaluation, 32 587 members of key populations were screened for TB, with 1587 smear-positive TB cases detected. Broadening TB services at human immunodeficiency virus drop-in centers using peer sputum collection to target high-risk populations for TB may be an effective way to increase TB case notification among key populations in Bangladesh.
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Affiliation(s)
| | - M Hossain
- FHI 360 Bangladesh, Dhaka, Bangladesh
| | - N Rahman
- FHI 360 Bangladesh, Dhaka, Bangladesh
| | | | - N Yasmin
- FHI 360 Bangladesh, Dhaka, Bangladesh
| | - M G Johnson
- Duke University Medical Center, Durham, North Carolina, USA
| | - C D Hamilton
- Duke University Medical Center, Durham, North Carolina, USA ; FHI 360, Durham, North Carolina, USA
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Rahman N, Tan K, Zainal Z, Khaw C, Chon M. Subsolidus Solution and Oxide Ionic Conductivity of Nd-Substituted Bismuth Yttria Fluorites. SAINS MALAYS 2015. [DOI: 10.17576/jsm-2015-4407-12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Corcoran J, Hallifax R, Talwar A, Psallidas I, Sykes A, Rahman N. P111 Procedural Experience, Training Opportunities And Attitudes Towards Intercostal Chest Drain Insertion: Variations Between Consultants, Trainees And Medical Sub-specialties. Thorax 2014. [DOI: 10.1136/thoraxjnl-2014-206260.252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Grant D, Franklin J, Watts L, Rahman N, Gleeson F. P167 Outcomesand Predictors Of Mortality In Cancer Patients With Incidental Pulmonary Embolism. Thorax 2014. [DOI: 10.1136/thoraxjnl-2014-206260.296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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