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Srinath A, Southall WGS, Nazal MR, Mechas CA, Foster JA, Griffin JT, Muhammad M, Moghadamian ES, Landy DC, Aneja A. Talar Neck Fractures With Associated Ipsilateral Foot and Ankle Fractures Have a Higher Risk of Avascular Necrosis. J Orthop Trauma 2024; 38:220-224. [PMID: 38457751 DOI: 10.1097/bot.0000000000002798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/05/2024] [Indexed: 03/10/2024]
Abstract
OBJECTIVES To determine if talar neck fractures with concomitant ipsilateral foot and/or ankle fractures (TNIFAFs) are associated with higher rates of avascular necrosis (AVN) compared with isolated talar neck fractures (ITNs). METHODS DESIGN Retrospective cohort. SETTING Single level I trauma center. PATIENT SELECTION CRITERIA Skeletally mature patients who sustained talar neck fractures from January 2008 to January 2017 with at least 6-month follow-up. Based on radiographs at the time of injury, fractures were classified as ITN or TNIFAF and by Hawkins classification. OUTCOME MEASURES AND COMPARISONS The primary outcome was the development of AVN based on follow-up radiographs, with secondary outcomes including nonunion and collapse. RESULTS There were 115 patients who sustained talar neck fractures, with 63 (55%) in the ITN group and 52 (45%) in the TNIFAF group. In total, 63 patients (54.7%) were female with the mean age of 39 years (range, 17-85), and 111 fractures (96.5%) occurred secondary to high-energy mechanisms of injury. There were no significant differences in demographic or clinical characteristics between groups ( P > 0.05). Twenty-four patients (46%) developed AVN in the TNIFAF group compared with 19 patients (30%) in the ITN group ( P = 0.078). After adjusting for Hawkins classification and other variables, the odds of developing AVN was higher in the TNIFAF group compared with the ITN group [odds ratio, 2.43 (95% confidence interval, 1.01-5.84); ( P = 0.047)]. CONCLUSIONS This study found a significantly higher likelihood of AVN in patients with talar neck fractures with concomitant ipsilateral foot and/or ankle fractures compared to those with isolated talar neck fractures after adjusting for Hawkins classification and other potential prognostic confounders. LEVEL OF EVIDENCE Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Arjun Srinath
- Department of Orthopaedic Surgery, University of Miami, Miami, FL
| | - Wyatt G S Southall
- Department of Orthopaedic Surgery & Sports Medicine, University of Kentucky, Lexington, KY
| | - Mark R Nazal
- Department of Orthopaedic Surgery & Sports Medicine, University of Kentucky, Lexington, KY
| | - Charles A Mechas
- Department of Orthopaedic Surgery & Sports Medicine, University of Kentucky, Lexington, KY
| | - Jeffrey A Foster
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA; and
| | - Jarod T Griffin
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA; and
| | - Maaz Muhammad
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA; and
| | - Eric S Moghadamian
- Department of Orthopaedic Surgery & Sports Medicine, University of Kentucky, Lexington, KY
| | | | - Arun Aneja
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA; and
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Muhammad M, Foster JA, Griffin JT, Kinchelow DL, Sierra-Arce CR, Southall WGS, Albitar F, Moghadamian ES, Wright RD, Matuszewski PE, Zuelzer DA, Primm DD, Hawk GS, Aneja A. Non-Operative Treatment of Humeral Shaft Fractures with Immediate Functional Bracing versus Coaptation Splinting and Delayed Functional Bracing: A Retrospective Study. J Orthop Trauma 2024:00005131-990000000-00361. [PMID: 38527088 DOI: 10.1097/bot.0000000000002810] [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: 03/27/2024]
Abstract
OBJECTIVES To compare radiographic and clinical outcomes in non-operative management of humeral shaft fractures treated initially with coaptation splinting (CS) followed by delayed functional bracing (FB) versus treatment with immediate FB. METHODS Design: Retrospective cohort study. SETTING Academic Level 1 Trauma Center. PATIENT SELECTION CRITERIA Patients with closed humeral shaft fractures managed non-operatively with initial CS followed by delayed FB or with immediate FB from 2016 to 2022. Patients younger than 18 years and/or with less than 3 months follow-up were excluded.Outcome Measures and Comparisons: The primary outcome was coronal and sagittal radiographic alignment assessed at final follow-up. Secondary outcomes included rate of failure of non-operative management (defined as surgical conversion and/or fracture nonunion), fracture union, and skin complications secondary to splint/brace wear. RESULTS Ninety-seven patients were managed non-operatively with delayed FB (n=58) or immediate FB (n=39). Overall, the mean age was 49.9 years (range 18-94), and 64 (66%) patients were female. The immediate FB group had less smokers (p=0.003) and lower incidence of radial nerve palsy (p=0.025), with more proximal third humeral shaft fractures (p=0.001). There were no other significant differences in demographic or clinical characteristics (p>0.05). There were no significant differences in coronal (p=0.144) or sagittal (p=0.763) radiographic alignment between groups. In total, 33 (34.0%) humeral shaft fractures failed non-operative management, with 11 (28.2%) in the immediate FB group, and 22 (37.9%) in the delayed FB group (p=0.322). There were no significant differences in fracture union (p=0.074) or skin complications (p=0.259) between groups. CONCLUSIONS This study demonstrated that non-operative treatment of humeral shaft fractures with immediate functional bracing did not result in significantly different radiographic or clinical outcomes compared to treatment with coaptation splinting followed by delayed functional bracing. Future prospective studies assessing patient reported outcomes (PROs) will further guide clinical decision making. LEVEL OF EVIDENCE Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Maaz Muhammad
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Jeffrey A Foster
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Jarod T Griffin
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Daria L Kinchelow
- Department Orthopaedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky, USA, 40507
| | - Carlos R Sierra-Arce
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Wyatt G S Southall
- Department Orthopaedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky, USA, 40507
| | - Ferras Albitar
- Department Orthopaedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky, USA, 40507
| | - Eric S Moghadamian
- Department Orthopaedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky, USA, 40507
| | - Raymond D Wright
- Department Orthopaedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky, USA, 40507
| | - Paul E Matuszewski
- Department Orthopaedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky, USA, 40507
| | - David A Zuelzer
- Department Orthopaedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky, USA, 40507
| | - Daniel D Primm
- Department Orthopaedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky, USA, 40507
| | - Gregory S Hawk
- Dr. Bing Zhang Department of Statistics, University of Kentucky, Lexington, Kentucky, USA 40507
| | - Arun Aneja
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA 02114, USA
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Foster JA, Hawk GS, Landy DC, Griffin JT, Bernard AC, Oyler DR, Southall WGS, Muhammad M, Sierra-Arce CR, Mounce SD, Borgida JS, Xiang L, Aneja A. Does Scheduled Low-Dose Short-Term NSAID (Ketorolac) Modulate Cytokine Levels Following Orthopaedic Polytrauma? A Secondary Analysis of a Randomized Clinical Trial. J Orthop Trauma 2024:00005131-990000000-00357. [PMID: 38506517 DOI: 10.1097/bot.0000000000002807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 03/11/2024] [Indexed: 03/21/2024]
Abstract
OBJECTIVES To determine whether scheduled low-dose, short-term ketorolac modulates cytokine concentrations in orthopaedic polytrauma patients. METHODS DESIGN Secondary analysis of a double-blinded, randomized controlled trial. SETTING Single Level I trauma center from August 2018 to October 2022. PATIENT SELECTION CRITERIA Orthopaedic polytrauma patients between 18-75 years with a New Injury Severity Score greater than 9 were enrolled. Participants were randomized to receive 15 mg of intravenous (IV) ketorolac every 6 hours for up to 5 inpatient days or 2 mL of IV saline similarly. OUTCOME MEASURES AND COMPARISONS Daily concentrations of prostaglandin E2 (PGE2), interleukin (IL)-1a, IL-1b, IL-6, and IL-10. Clinical outcomes included hospital and intensive care unit (ICU) length of stay (LOS), pulmonary complications, and acute kidney injury (AKI). RESULTS Seventy orthopaedic polytrauma patients were enrolled, with 35 participants randomized to the ketorolac group and 35 to the placebo group. The overall IL-10 trend over time was significantly different in the ketorolac group (p = 0.043). IL-6 was 65.8% higher at enrollment compared to Day 3 (p < 0.001) when aggregated over both groups. There was no significant treatment effect for PGE2, IL-1a, or IL-1b (p > 0.05). There were no significant differences in clinical outcomes between groups (p > 0.05). CONCLUSIONS Scheduled low-dose, short-term, IV ketorolac was associated with significantly different mean trends in IL-10 concentration in orthopaedic polytrauma patients with no significant differences in PGE2, IL-1a, IL-1b, or IL-6 levels between groups. The treatment did not have an impact on clinical outcomes of hospital or ICU LOS, pulmonary complications, or AKI. LEVEL OF EVIDENCE Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Jeffrey A Foster
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA
| | - Gregory S Hawk
- Dr. Bing Zhang Department of Statistics, University of Kentucky, Lexington, KY
| | | | - Jarod T Griffin
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA
| | - Andrew C Bernard
- Department of Trauma and Acute Care Surgery, University of Kentucky, Lexington, KY
| | - Douglas R Oyler
- Pharmacy Practice & Science Department, University of Kentucky, Lexington, KY
| | - Wyatt G S Southall
- Department of Orthopaedic Surgery & Sports Medicine, University of Kentucky, Lexington, KY
| | - Maaz Muhammad
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA
| | | | - Samuel D Mounce
- Department of Orthopaedic Surgery & Sports Medicine, University of Kentucky, Lexington, KY
| | - Jacob S Borgida
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA
| | - Lusha Xiang
- US Army Institute of Surgical Research, San Antonio, TX
| | - Arun Aneja
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA
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Obaje P, Edache EI, Muhammad M, Udam N, Bello MM, Audu BM. FACTORS AFFECTING RESEARCH ENGAGEMENT AMONG CLINICIANS IN AZARE, BAUCHI STATE, NIGERIA. West Afr J Med 2023; 40:West Afr J Med. [PMID: 37975295] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Introduction/Background Medical research is a key element in the advancement of medicine and patient care improvement. However, there is evidence that developing regions like Nigeria have comparatively low research output. Clinicians' attitudes, practices, and barriers toward research are key causal factors of the low research productivity. Objectives This study explored the research practice, attitude, and barriers towards research engagement among Clinicians at Federal Medical Centre, Azare, Bauchi state. Methodology This was a quantitative cross-sectional study conducted at Federal Medical Centre, Azare, Bauchi state. Data on sociodemographic characteristics, research practices, attitudes, and barriers toward research engagement was obtained using a pretested, self-administered questionnaire. Data was collated and analyzed using IBM Statistical Package for Social Sciences software (SPSS) version 21. Result A total of 101 clinicians participated in this study of which 14.9%, 31.7%, and 29.7% were Consultants, Registrars and Medical Officers respectively. Only 20.8% of the respondents have presented at a scientific conference previously, while 18.8% of the respondents have a published paper in a scientific journal. Although clinicians showed a positive attitude towards research (Mean: 4.39, SD ± 0.61), lack of research funding, facilities, mentorship, and demanding clinical services are major deterrents to clinicians' engagement in research. Conclusion Clinicians have poor research practice despite their positive attitude towards research engagement. Appropriate interventions should be implemented for effective research engagement to augment research output.
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Affiliation(s)
- P Obaje
- College of Medical Sciences, University of Maiduguri, Borno state.
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DeFroda SF, Hanish S, Muhammad M, Cook JL, Crist B. Graft Options for Hip Labral Reconstruction. JBJS Rev 2022; 10:01874474-202212000-00001. [PMID: 36480655 DOI: 10.2106/jbjs.rvw.22.00124] [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: 12/13/2022]
Abstract
➢ Arthroscopic hip labral reconstruction is a complex procedure which is growing in use as indications, techniques, and surgical expertise advance. ➢ Graft selection is an important component of labral reconstruction based on relative advantages and disadvantages of available types of autografts and allografts. ➢ The ideal graft should mimic the native acetabular labrum form and function while also being affordable, readily available, and associated with low morbidity. ➢ High rates of patient satisfaction and positive patient-reported outcomes have been reported after labral reconstruction using several graft types.
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Affiliation(s)
- Steven F DeFroda
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri
| | - Stefan Hanish
- School of Medicine, University of Missouri, Columbia, Missouri
| | - Maaz Muhammad
- School of Medicine, University of Missouri, Columbia, Missouri
| | - James L Cook
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri.,Thompson Laboratory for Regenerative Orthopaedics, University of Missouri, Columbia, Missouri
| | - Brett Crist
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri.,Thompson Laboratory for Regenerative Orthopaedics, University of Missouri, Columbia, Missouri
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Bahar A, Muhammad M, Anees MT, Khan MMA. Development of Flood Vulnerability and Risk Indices for Kelantan District, Peninsular Malaysia. Nat Env Poll Tech 2022. [DOI: 10.46488/nept.2022.v21i04.055] [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: 12/03/2022] Open
Abstract
Natural hazards are inevitable which required proper monitoring and application of mitigation measures to reduce vulnerability and risk. Flood is one of the most common atural hazards in Malaysia. The present study was conducted to identify vulnerable flood zones using flood vulnerability and risk indices and to minimize flood damage by suggesting mitigation measures. Four sub-districts of the Kelantan state, Peninsular Malaysia were selected based on the availability of the data and flooding history. For this urpose, demographic, social, economic, and flood event data were collected to develop flood vulnerability and risk index. Descriptive and inferential statistics were used to analyze the results. The results revealed that developed flood vulnerability and risk indices accurately predict high-priority zones. Overall, it was found that flood risk is relatively higher in a rural area compared to an urban area.
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7
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Kim HM, Muhammad M, Heil SD, Smith MJ. Clinical Fate of Glenohumeral Osteoarthritis Following Intraarticular Corticosteroid Injection: An Analysis in 311 Shoulders. J Shoulder Elb Arthroplast 2022; 6:24715492221075446. [PMID: 35669620 PMCID: PMC9163723 DOI: 10.1177/24715492221075446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 11/04/2021] [Accepted: 01/05/2022] [Indexed: 11/17/2022] Open
Abstract
Background Intraarticular corticosteroid injection is commonly used conservative treatment for glenohumeral osteoarthritis (OA). The purpose of this study was to investigate the clinical fate of symptomatic glenohumeral OA following intraarticular corticosteroid injection and to identify factors associated with undergoing shoulder arthroplasty. Methods Glenohumeral OA patients who had undergone at least one glenohumeral corticosteroid injection from 2012 to 2017 were identified. Data for demographics, comorbidities, number of injections, severity of radiographic arthritis, and subsequent treatment were collected up to February 2020. Data were analyzed to compare between patients who had eventually undergone shoulder arthroplasty and those who had not. Results A total of 311 shoulders (275 patients) were followed up for 3 to 8 years after the index injection. The mean age of patients was 64.7 years. There were 148 females, and 116 shoulders (37.3%) eventually underwent arthroplasty, 68 (21.9%) further injections only, 104 (33.4%) no further treatment, 14 (4.5%) a non-arthroplasty surgical procedure, and 9 (2.9%) were lost to follow up. Severity of radiographic arthritic changes, female sex, younger age, and nonsmoking status were found to be significantly associated with undergoing arthroplasty (p < 0.001, p = 0.014, p = 0.003, and p = 0.043, respectively). Conclusion Approximately one third of glenohumeral OA patients who had received an intraarticular corticosteroid injection eventually elected to undergo shoulder arthroplasty within 3 to 8 years of the injection. High-grade arthritic changes in radiographs, female gender, and younger age were found to be independent factors associated with undergoing arthroplasty. This information may be useful in counseling patients about their future clinical course. Level of Evidence: Level III Retrospective comparative study
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Affiliation(s)
- H. Mike Kim
- Missouri Orthopaedic Institute, University of Missouri, Columbia, MO 65212, USA
| | - Maaz Muhammad
- Missouri Orthopaedic Institute, University of Missouri, Columbia, MO 65212, USA
| | - Sally D. Heil
- Missouri Orthopaedic Institute, University of Missouri, Columbia, MO 65212, USA
| | - Matthew J. Smith
- Missouri Orthopaedic Institute, University of Missouri, Columbia, MO 65212, USA
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Muhammad M, Bai J, Alhassan AJ, Sule H, Ju J, Zhao B, Liu D. Significance of Glutamate Racemase for the Viability and Cell Wall Integrity of Streptococcus iniae. Biochemistry (Mosc) 2020; 85:248-256. [PMID: 32093601 DOI: 10.1134/s0006297920020121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Streptococcus iniae is a pathogenic and zoonotic bacterium responsible for human diseases and mortality of many fish species. Recently, this bacterium has demonstrated an increasing trend for antibiotics resistance, which has warranted a search for new approaches to tackle its infection. Glutamate racemase (MurI) is a ubiquitous enzyme of the peptidoglycan synthesis pathway that plays an important role in the cell wall integrity maintenance; however, the significance of this enzyme differs in different species. In this study, we knocked out the MurI gene in S. iniae in order to elucidate the role of glutamate racemase in maintaining cell wall integrity in this bacterial species. We also cloned, expressed, and purified MurI and determined its biochemical characteristics. Biochemical analysis revealed that the MurI gene in S. iniae encodes a functional enzyme with a molecular weight of 30 kDa, temperature optimum at 35°C, and pH optimum at 8.5. Metal ions, such as Cu2+, Mn2+, Co2+ and Zn2+, inhibited the enzyme activity. MurI was found to be essential for the viability and cell wall integrity of S. iniae. The optimal growth of the MurI-deficient S. iniae mutant can be achieved only by adding a high concentration of D-glutamate to the medium. Membrane permeability assay of the mutant showed an increasing extent of the cell wall damage with time upon D-glutamate starvation. Moreover, the mutant lost its virulence when incubated in fish blood. Our results demonstrated that the MurI knockout leads to the generation of S. iniae auxotroph with damaged cell walls.
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Affiliation(s)
- M Muhammad
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China.,Kano University of Science and Technology, Department of Biochemistry, Wudil, Nigeria
| | - J Bai
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China
| | - A J Alhassan
- Bayero University Kano, Department of Biochemistry, Kano, Nigeria
| | - H Sule
- Bayero University Kano, Department of Medical Laboratory Science, Kano, Nigeria
| | - J Ju
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China
| | - B Zhao
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China.
| | - D Liu
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China.
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Khan J, Tariq M, Muhammad M, H. Mehmood M, Ullah I, Raziq A, Akbar F, Saqib M, Rahim A, Niaz A. Kinetic and thermodynamic study of oxidative degradation of acid yellow 17 dye by Fenton-like process: Effect of HCO3−, CO32−, Cl− and SO42− on dye degradation. B CHEM SOC ETHIOPIA 2019. [DOI: 10.4314/bcse.v33i2.5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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10
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Nazli S, Ismail S, Razman A, Chua Y, Al-Khateeb A, Muhammad M, Teh L, Mohd Nawawi H, Mohd Nor N, Ramli A, Mohd Kassim N. Targeted sequencing as a tool for genetic mutations screening for familial hypercholesterolaemia patients in Malaysian population. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Chua Y, Teh L, Al-Khateeb A, Muhammad M, Ismail S, Mohd Nawawi H. Exome sequencing: A pathfinding molecular analysis for discovery of novel and known familial-hypercholesterolaemia-related mutations in malaysian population. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Anumanthan G, Gupta S, Fink MK, Hesemann NP, Bowles DK, McDaniel LM, Muhammad M, Mohan RR. KCa3.1 ion channel: A novel therapeutic target for corneal fibrosis. PLoS One 2018; 13:e0192145. [PMID: 29554088 PMCID: PMC5858751 DOI: 10.1371/journal.pone.0192145] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 01/17/2018] [Indexed: 12/16/2022] Open
Abstract
Vision impairment from corneal fibrosis is a common consequence of irregular corneal wound healing after injury. Intermediate-conductance calmodulin/calcium-activated K+ channels 3.1 (KCa3.1) play an important role in cell cycle progression and cellular proliferation. Proliferation and differentiation of corneal fibroblasts to myofibroblasts can lead to corneal fibrosis after injury. KCa3.1 has been shown in many non-ocular tissues to promote fibrosis, but its role in corneal fibrosis is still unknown. In this study, we characterized the expression KCa3.1 in the human cornea and its role in corneal wound healing in vivo using a KCa3.1 knockout (KCa3.1-/-) mouse model. Additionally, we tested the hypothesis that blockade of KCa3.1 by a selective KCa3.1 inhibitor, TRAM-34, could augment a novel interventional approach for controlling corneal fibrosis in our established in vitro model of corneal fibrosis. The expression of KCa3.1 gene and protein was analyzed in human and murine corneas. Primary human corneal fibroblast (HCF) cultures were used to examine the potential of TRAM-34 in treating corneal fibrosis by measuring levels of pro-fibrotic genes, proteins, and cellular migration using real-time quantitative qPCR, Western blotting, and scratch assay, respectively. Cytotoxicity of TRAM-34 was tested with trypan blue assay, and pro-fibrotic marker expression was tested in KCa3.1-/-. Expression of KCa3.1 mRNA and protein was detected in all three layers of the human cornea. The KCa3.1-/- mice demonstrated significantly reduced corneal fibrosis and expression of pro-fibrotic marker genes such as collagen I and α-smooth muscle actin (α-SMA), suggesting that KCa3.1 plays an important role corneal wound healing in vivo. Pharmacological treatment with TRAM-34 significantly attenuated corneal fibrosis in vitro, as demonstrated in HCFs by the inhibition TGFβ-mediated transcription of pro-fibrotic collagen I mRNA and α-SMA mRNA and protein expression (p<0.001). No evidence of cytotoxicity was observed. Our study suggests that KCa3.1 regulates corneal wound healing and that blockade of KCa3.1 by TRAM-34 offers a potential therapeutic strategy for developing therapies to cure corneal fibrosis in vivo.
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Affiliation(s)
- Govindaraj Anumanthan
- Harry S. Truman Memorial Veteran Hospital, Columbia, Missouri, United States of America
- Veterinary Medicine and Surgery, University of Missouri, Columbia, Missouri, United States of America
| | - Suneel Gupta
- Harry S. Truman Memorial Veteran Hospital, Columbia, Missouri, United States of America
- Veterinary Medicine and Surgery, University of Missouri, Columbia, Missouri, United States of America
| | - Michael K. Fink
- Harry S. Truman Memorial Veteran Hospital, Columbia, Missouri, United States of America
- Veterinary Medicine and Surgery, University of Missouri, Columbia, Missouri, United States of America
| | - Nathan P. Hesemann
- Harry S. Truman Memorial Veteran Hospital, Columbia, Missouri, United States of America
- Mason Eye Institute, University of Missouri School of Medicine, Columbia, Missouri, United States of America
| | - Douglas K. Bowles
- Biomedical Sciences, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, United States of America
| | - Lindsey M. McDaniel
- Harry S. Truman Memorial Veteran Hospital, Columbia, Missouri, United States of America
- Mason Eye Institute, University of Missouri School of Medicine, Columbia, Missouri, United States of America
| | - Maaz Muhammad
- Veterinary Medicine and Surgery, University of Missouri, Columbia, Missouri, United States of America
| | - Rajiv R. Mohan
- Harry S. Truman Memorial Veteran Hospital, Columbia, Missouri, United States of America
- Veterinary Medicine and Surgery, University of Missouri, Columbia, Missouri, United States of America
- Mason Eye Institute, University of Missouri School of Medicine, Columbia, Missouri, United States of America
- Biomedical Sciences, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, United States of America
- * E-mail:
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Sutris JM, How V, Sumeri SA, Muhammad M, Sardi D, Mohd Mokhtar MT, Muhammad H, Ghazi HF, Isa ZM. Genotoxicity following Organophosphate Pesticides Exposure among Orang Asli Children Living in an Agricultural Island in Kuala Langat, Selangor, Malaysia. Int J Occup Environ Med 2016; 7:42-51. [PMID: 26772597 PMCID: PMC6816522 DOI: 10.15171/ijoem.2016.705] [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] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 12/27/2015] [Indexed: 11/17/2022]
Abstract
Background: Agriculture is an important sector for the Malaysian economy. The use of pesticides in agriculture is crucial due to its function in keeping the crops from harmful insects. Children living near agricultural fields are at risk of pesticide poisoning. Objective: To evaluate the genotoxic risk among children who exposed to pesticides and measure DNA damage due to pesticides exposure. Methods: In a cross-sectional study 180 Orang Asli Mah Meri children aged between 7 and 12 years were studied. They were all living in an agricultural island in Kuala Langat, Selangor, Malaysia. The data for this study were collected via modified validated questionnaire and food frequency questionnaire, which consisted of 131 food items. 6 urinary organophosphate metabolites were used as biomarkers for pesticides exposure. For genotoxic risk or genetic damage assessment, the level of DNA damage from exfoliated buccal mucosa cells was measured using the comet assay electrophoresis method. Results: Out of 180 respondents, 84 (46.7%) showed positive traces of organophosphate metabolites in their urine. Children with detectable urinary pesticide had a longer tail length (median 43.5; IQR 30.9 to 68.1 µm) than those with undetectable urinary pesticides (median 24.7; IQR 9.5 to 48.1 µm). There was a significant association between the extent of DNA damage and the children's age, length of residence in the area, pesticides detection, and frequency of apple consumption. Conclusion: The organophosphate genotoxicity among children is associated with the amount of exposure (detectability of urinary pesticide) and length of residence in (exposure) the study area.
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Affiliation(s)
- J M Sutris
- Department of Community Health, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Kuala Lumpur, Malaysia.
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Shah J, R. Jan M, Muhammad M, Ara B, U. Rehman I. Development of an indirect spectrophotometric method for determination of methamidophos insecticide in soil, water and vegetable samples. B CHEM SOC ETHIOPIA 2015. [DOI: 10.4314/bcse.v29i2.13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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15
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Abiola AO, Ojika BO, Mannir B, Abba SK, Muhammad M, Ibrahim MTO, Aschcroft BN, Akanmu SS. Effect of health education on the knowledge and attitude to sickle cell disorder and screening practices among school of nursing students in Sokoto, Nigeria. Nig Q J Hosp Med 2013; 23:65-68. [PMID: 24579498] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND Sickle cell disorder is the most important genetic hematological disease that affects people of black African descent. The years of young adulthood present a good opportunity for screening and counseling for this genetic blood disorder. OBJECTIVES To assess effect of health education and provision of free sickle cell haemoglobin screening on knowledge of sickle cell disorder, attitude towards sickle cell haemoglobin screening, and uptake of sickle cell haemoglobin screening among students of a School of Nursing. METHODS Study design was a quasi-experimental noncontrolled study. Self-administered questionnaire was used for pre- and post-intervention data collection. Implemented interventions were seminar on sickle cell disorder combined with free sickle cell haemoglobin screening. The data was analyzed with Epi-info version 3.5.1 statistical software package. RESULTS Respondents who participated in all the study phases were 104. Mean knowledge score (%) was high (80.9 +/- 22.8%) at baseline and improved significantly to 91.8 +/- 9.4% (p < 0.001) at post intervention. 91.3% were willing to screen fiancée before getting married while 72.1% were willing not to go ahead with marriage if self and fiancée are carriers of sickle cell haemoglobin. Phenotype of the respondents that volunteered to be screened for sickle cell haemoglobin were: A (70.5%), AC (6.8%) and AS (22.7%). CONCLUSIONS Implemented interventions, seminar on sickle cell disorder combined with free sickle cell haemoglobin screening service yielded significant impact on respondents' knowledge, attitude and uptake of sickle cell haemoglobin screening.
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Affiliation(s)
- A O Abiola
- Department of Community Health and Primary Care, College of Medicine of the University of Lagos.
| | - B O Ojika
- Department of Community Health, College of Health Sciences of the Usmanu Danfodiyo University, Sokoto
| | - B Mannir
- Department of Community Health, College of Health Sciences of the Usmanu Danfodiyo University, Sokoto
| | - S K Abba
- Department of Community Health, College of Health Sciences of the Usmanu Danfodiyo University, Sokoto
| | - M Muhammad
- Department of Community Health, College of Health Sciences of the Usmanu Danfodiyo University, Sokoto
| | - M T O Ibrahim
- Department of Community Health, College of Health Sciences of the Usmanu Danfodiyo University, Sokoto
| | - B N Aschcroft
- School of Nursing, Usmanu Danfodiyo University Teaching Hospital, Sokoto
| | - S S Akanmu
- Department of Haematology and Blood Transfusion, College of Medicine of the University of Lagos
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Fagbamila I, Ngulukun S, Ardzard S, Sati N, Ajayi O, Ankeli P, Akalusi Y, Okeke L, Ikpa L, Odugbo M, Muhammad M. Validation of Commercial Test Kit for Microbiological Screening of Antimicrobials in Chicken Eggs. ACTA ACUST UNITED AC 2012. [DOI: 10.3923/rjvs.2012.75.80] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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17
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Raha AR, Aswad A, Muhammad M, Azarinah I, Nurlia Y. The response of theatre personnel to the pulse oximeter alarm. Southern African Journal of Anaesthesia and Analgesia 2012. [DOI: 10.1080/22201173.2012.10872834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- AR Raha
- Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Universiti Kebangsaan, Malaysia
| | - A Aswad
- Department of Anaesthesiology and Intensive Care, Hospital Sultanah Aminah, Johor Bahru, Johor, Malaysia
| | - M Muhammad
- Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Universiti Kebangsaan, Malaysia
| | - I Azarinah
- Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Universiti Kebangsaan, Malaysia
| | - Y Nurlia
- Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Universiti Kebangsaan, Malaysia
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Esa K, Azarinah I, Muhammad M, Helmi MA, Jaafar MZ. A comparison between Laryngeal Tube Suction II Airway and Proseal Laryngeal Mask Airway in laparascopic surgery. Med J Malaysia 2011; 66:182-186. [PMID: 22111436] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This was a prospective randomized study comparing the ease of insertion, haemodynamic changes, quality of airway seal, oxygenation and ventilation parameters and complications between Laryngeal Tube Suction II (LTS II) with Proseal Laryngeal Mask Airway (PLMA), both are supraglottic airway incorporated with gastric passage. Fifty-four ASA I and II patients were randomly allocated to receive either LTS II or PLMA. Both devices provided a secure airway even under conditions of elevated intra-abdominal pressure up to 17 mmHg. In this study, there were no differences concerning ease of insertion, haemodynamic changes, quality of airway seal, oxygenation and ventilation parameters and complications between LTS II and PLMA.
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Affiliation(s)
- K Esa
- Department of Anaesthesiology & Intensive Care, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre (UKMMC), Jalan Yaacob Latif, Bandar Tun Razak, 56000 Cheras, Kuala Lumpur
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Leelavathi M, Jamani N, Muhammad M, Adawiyah J, Aziz N. Drug reaction with herbal supplement: a possible case of drug induced lupus erythematosus. Malays Fam Physician 2010; 5:99-100. [PMID: 25606196 PMCID: PMC4170396] [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] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A 24-year-old lady presented with four days history of fever, non-pruritic rash, ankle pain and swelling. She had consumed herbal supplement five days before the onset of symptoms. Examinations revealed erythematous maculo-papular lesions of varying sizes on sun exposed areas. Patient was suspected to have Drug Induced Lupus Erythematosus (DILE) and subsequently symptoms subsided rapidly on withholding the herbal medication.
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Affiliation(s)
- M Leelavathi
- Department of Family Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia (Leelavathi Muthupalaniappen, Nurjasmine Aida Jamani, Noor Azah Abdul Aziz)
| | - Na Jamani
- Department of Family Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia (Leelavathi Muthupalaniappen, Nurjasmine Aida Jamani, Noor Azah Abdul Aziz)
| | - M Muhammad
- Department of Microbiology and Medical Immunology, Faculty of Medicine, Universiti Kebangsaan Malaysia (Marlyn Muhammad)
| | - J Adawiyah
- Dermatology Unit, Faculty of Medicine, Universiti Kebangsaan Malaysia (Adawiyah Jamil)
| | - Na Aziz
- Department of Family Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia (Leelavathi Muthupalaniappen, Nurjasmine Aida Jamani, Noor Azah Abdul Aziz)
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Wan Rahiza WM, Raha AR, Muhd Helmi A, Nadia MN, Muhammad M, Azmil Farid Z, Azarinah I, Jaafar MZ. Correlation between spinal column length and the spread of subarachnoid hyperbaric bupivacaine in the term parturient. Southern African Journal of Anaesthesia and Analgesia 2010. [DOI: 10.1080/22201173.2010.10872678] [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: 10/24/2022]
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Debray P, Rahman SMS, Wan J, Newrock RS, Cahay M, Ngo AT, Ulloa SE, Herbert ST, Muhammad M, Johnson M. All-electric quantum point contact spin-polarizer. Nat Nanotechnol 2009; 4:759-764. [PMID: 19893512 DOI: 10.1038/nnano.2009.240] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2009] [Accepted: 07/24/2009] [Indexed: 05/28/2023]
Abstract
The controlled creation, manipulation and detection of spin-polarized currents by purely electrical means remains a central challenge of spintronics. Efforts to meet this challenge by exploiting the coupling of the electron orbital motion to its spin, in particular Rashba spin-orbit coupling, have so far been unsuccessful. Recently, it has been shown theoretically that the confining potential of a small current-carrying wire with high intrinsic spin-orbit coupling leads to the accumulation of opposite spins at opposite edges of the wire, though not to a spin-polarized current. Here, we present experimental evidence that a quantum point contact -- a short wire -- made from a semiconductor with high intrinsic spin-orbit coupling can generate a completely spin-polarized current when its lateral confinement is made highly asymmetric. By avoiding the use of ferromagnetic contacts or external magnetic fields, such quantum point contacts may make feasible the development of a variety of semiconductor spintronic devices.
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Affiliation(s)
- P Debray
- Department of Physics, University of Cincinnati, Cincinnati, OH 45221, USA.
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Nasser NJ, Israelit SH, Muhammad M, Basis F. Factitious hyperamylasuria by a nurse: a symptom of Munchausen syndrome. Case Reports 2009; 2009:bcr10.2008.1070. [DOI: 10.1136/bcr.10.2008.1070] [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] Open
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23
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Seror O, N'Kontchou G, Muhammad M, Barrucand C, Tin Tin Htar M, Assaban M, Haddar D, Trinchet JC, Beaugrand M, Sellier N. Influence de la proximité des gros vaisseaux sur les résultats du traitement des carcinomes hépato-cellulaires par radiofréquence : une étude contrôlée. ACTA ACUST UNITED AC 2007; 88:1157-64. [PMID: 17878877 DOI: 10.1016/s0221-0363(07)89927-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
PURPOSE To evaluate the risk of radiofrequency ablation treatment failure for hepatocellular carcinomas (HCC) next to large vessels. MATERIALS AND METHODS Between May 2000 and October 2002, from a total of 83 patients treated by radiofrequency ablation for HCC in a single center, 13 patients with tumor<or=3.5 cm contacting a vessel >or=3 mm in diameter (Group A) were matched with 13 patients with similar size tumors located away from large vessels (Group B). Immediate response and recurrence rate were evaluated on CT. RESULTS After mean follow-up interval of 39+/-16.5 months for Group A and 39+/-14 months for Group B, local recurrence rates were 7/12 versus 1/12 respectively (p=0.03). For Group A, 6/7 local recurrences clearly contacted a large vessel. CONCLUSION The cooling effect from flowing blood in large vessels markedly increases the rate of local failure of radiofrequency ablation for small HCC located near large vessels.
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Affiliation(s)
- O Seror
- Service de Radiologie, Hôpital Jean Verdier, Assistance Publique-Hôpitaux de Paris, avenue du 14 Juillet, 93140 Bondy.
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Israelski DM, Prentiss DE, Lubega S, Balmas G, Garcia P, Muhammad M, Cummings S, Koopman C. Psychiatric co-morbidity in vulnerable populations receiving primary care for HIV/AIDS. AIDS Care 2007; 19:220-5. [PMID: 17364402 DOI: 10.1080/09540120600774230] [Citation(s) in RCA: 99] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Considerable evidence suggests that people with HIV disease are significantly more distressed than the general population, yet psychiatric disorders are commonly under-detected in HIV care settings. This study examines the prevalence of three stress-related psychiatric diagnoses--depression, posttraumatic stress disorder (PTSD), and acute stress disorder (ASD), among a vulnerable population of HIV-infected patients. Among approximately 350 patients attending two county-based HIV primary care clinics, 210 participants were screened for diagnostic symptom criteria for depression, PTSD, and ASD. Standardized screening measures used to assess for these disorders included the Beck Depression Inventory, the Posttraumatic Stress Checklist, and the Stanford Acute Stress Questionnaire. High percentages of HIV-infected patients met screening criteria for depression (38 per cent), PTSD (34 per cent), and ASD (43 per cent). Thirty eight percent screened positively for two or more disorders. Women were more likely to meet symptom criteria for ASD than men (55 per cent vs. 38 per cent, OR=1.94, CI95 per cent=1.1-3.5). ASD was detected more commonly among African-American and white participants (51 per cent and 50 per cent respectively), compared with other ethnic groups. Latinos were least likely to express symptoms of ASD (OR=0.52, CI95 per cent=0.29-0.96). Of the 118 patients with at least one of these disorders, 51 (43 per cent) reported receiving no concurrent mental health treatment. Patients with HIV/AIDS who receive public healthcare are likely to have high rates of acute and posttraumatic stress disorders and depression. These data suggest that current clinical practices could be improved with the use of appropriate tools and procedures to screen and diagnose mental health disorders in populations with HIV/AIDS.
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Affiliation(s)
- D M Israelski
- Stanford University School of Medicine, San Mateo, CA, USA
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Nasser NJ, Israelit SH, Muhammad M, Basis F. Factitious hyperamylasuria by a nurse: symptom of Munchausen's syndrome. Emerg Med J 2007; 24:e2. [PMID: 17183026 PMCID: PMC2658174 DOI: 10.1136/emj.2006.039677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A 30-year-old nurse presented with abdominal pain and tenderness. Her blood tests, including amylase, were normal. Urinary amylase was extremely high. The source of the increased urinary amylase was found to be the patient's saliva - she had spit into her urine sample. Subsequent investigation showed that she had Munchausen's syndrome.
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Affiliation(s)
- N J Nasser
- Department of Emergency Medicine, Rambam Health Care Campus, PO Box 9602, Haifa 31096, Israel
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Odugbo MO, Muhammad M, Musa U, Suleiman AB, Ekundayo SO, Ogunjumo SO. Pasteurellosis in japanese quail (Coturnix coturnix japonica) caused by Pasteurella multocida multocida A:4. Vet Rec 2004; 155:90-1. [PMID: 15311804 DOI: 10.1136/vr.155.3.90] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- M O Odugbo
- National Veterinary Research Institute, Vom, Plateau State, Nigeria
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Prawirohardjono W, Dwiprahasto I, Astuti I, Hadiwandowo S, Kristin E, Muhammad M, Kelly MF. The administration to Indonesians of monosodium L-glutamate in Indonesian foods: an assessment of adverse reactions in a randomized double-blind, crossover, placebo-controlled study. J Nutr 2000; 130:1074S-6S. [PMID: 10736385 DOI: 10.1093/jn/130.4.1074s] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Monosodium L-glutamate (MSG) has been suggested to cause postprandial symptoms after the ingestion of Chinese or oriental meals. Therefore, we examined whether such symptoms could be elicited in Indonesians ingesting levels of MSG typically found in Indonesian cuisine. Healthy volunteers (n = 52) were treated with capsules of placebo or MSG (1.5 and 3.0 g/person) as part of a standardized Indonesian breakfast. The study used a rigorous, randomized, double-blind, crossover design. The occurrence of symptoms after MSG ingestion did not differ from that after consumption of the placebo.
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Affiliation(s)
- W Prawirohardjono
- Department of Pharmacology, Faculty of Medicine, Gadjah Mada University, Yogyakarta, Indonesia
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