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Watermeyer G, Katsidzira L, Nsokolo B, Isaac Alatise O, Duduyemi BM, Kassianides C, Hodges P. Challenges in the diagnosis and management of IBD: a sub-Saharan African perspective. Therap Adv Gastroenterol 2023; 16:17562848231184986. [PMID: 37457138 PMCID: PMC10345935 DOI: 10.1177/17562848231184986] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 06/12/2023] [Indexed: 07/18/2023] Open
Abstract
With the exception of South Africa, inflammatory bowel disease (IBD) has long been considered uncommon in sub-Saharan Africa (SSA) with a dearth of peer-reviewed publications from the subcontinent. This most likely reflects underreporting as some cases may be missed due to the high burden of infectious diseases which may closely mimic IBD. In addition, many countries in SSA have limited endoscopic capacity, inadequate access to diagnostic imaging and a notable scarcity of histopathologists, radiologists and gastroenterologists. Beyond these obstacles, which significantly impact patient care, there are many other challenges in SSA, particularly the unavailability of key IBD therapies. In this review, we discuss barriers in diagnosing and managing IBD in SSA, as well as some of the initiatives currently in place to address these short comings.
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Affiliation(s)
| | - Leolin Katsidzira
- Internal Medicine Unit, Faculty of Medicine and Health Sciences, University of Zimbabwe, Harare, Zimbabwe
| | - Bright Nsokolo
- School of Medicine and Clinical Sciences, Levy Mwanawasa Medical University, Lusaka, Zambia
| | - Olusegun Isaac Alatise
- Division of Gastrointestinal/Surgical Oncology, Department of Surgery, Obafemi Awolowo University/Teaching Hospitals Complex, Ile-Ife, Osun, Nigeria
| | - Babatunde M. Duduyemi
- Department of Pathology, College of Medicine and Allied Health Sciences/Teaching Hospitals Complex Highest University of Sierra Leone, Freetown, Sierra Leone
| | - Chris Kassianides
- Department of Medicine, Faculty of Health Sciences, University of Cape Town, Rondebosch, Western Cape, South Africa
| | - Phoebe Hodges
- Barts and the London School of Medicine and Dentistry, Blizard Institute, Queen Mary University of London, London, UK
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Schillinger RJ, Mwakamui S, Mulenga C, Tembo M, Hodges P, Besa E, Chandwe K, Owino VO, Edwards CA, Kelly P, Morrison DJ. 13C-sucrose breath test for the non-invasive assessment of environmental enteropathy in Zambian adults. Front Med (Lausanne) 2022; 9:904339. [PMID: 35966866 PMCID: PMC9372340 DOI: 10.3389/fmed.2022.904339] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 07/13/2022] [Indexed: 12/21/2022] Open
Abstract
Objectives Environmental enteropathy (EE) is a subclinical disorder highly prevalent in tropical and disadvantaged populations and is thought to play a role in growth faltering in children, poor responses to oral vaccines, and micronutrient deficiencies. This study aims to evaluate the potential of a non-invasive breath test based on stable isotopes for evaluation of impaired digestion and absorption of sucrose in EE. Methods We optimized a 13C-sucrose breath test (13C-SBT) in 19 young adults in Glasgow, United Kingdom. In a further experiment (in 18 adults) we validated the 13C-SBT using Reducose, an intestinal glucosidase inhibitor. We then compared the 13C-SBT to intestinal mucosal morphometry, immunostaining for sucrose-isomaltase (SI) expression, and SI activity in 24 Zambian adults with EE. Results Fully labeled sucrose (0.3 mg/kg) provided clear breath enrichment signals over 2–3 h in both British and Zambian adults, more than fivefold higher than naturally enriched sucrose. Reducose dramatically impaired 13C-sucrose digestion, reducing 4 h 13CO2 breath recovery by > 50%. Duodenal biopsies in Zambian adults confirmed the presence of EE, and SI immunostaining was present in 16/24 adults. The kinetics of 13CO2 evolution were consistently faster in participants with detectable SI immunostaining. Although sucrase activity was strongly correlated with villus height (r = 0.72; P < 0.05) after adjustment for age, sex and body mass index, there were no correlations between 13C-SBT and villus height or measured sucrase activity in pinch biopsies. Conclusion A 13C-SBT was developed which was easy to perform, generated clear enrichment of 13CO2 in breath samples, and clearly reports sucrase activity. Further work is needed to validate it and understand its applications in evaluating EE.
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Affiliation(s)
- Robert J. Schillinger
- Scottish Universities Environmental Research Centre, University of Glasgow, East Kilbride, United Kingdom
- School of Medicine, Dentistry and Nursing, University of Glasgow, Glasgow, United Kingdom
| | - Simutanyi Mwakamui
- Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, Lusaka, Zambia
| | - Chola Mulenga
- Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, Lusaka, Zambia
| | - Mizinga Tembo
- Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, Lusaka, Zambia
| | - Phoebe Hodges
- Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, Lusaka, Zambia
- Blizard Institute, Barts & The London School of Medicine, Queen Mary University of London, London, United Kingdom
| | - Ellen Besa
- Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, Lusaka, Zambia
| | - Kanta Chandwe
- Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, Lusaka, Zambia
| | - Victor O. Owino
- Nutritional and Health-Related Environmental Studies Section, Division of Human Health, International Atomic Energy Agency (IAEA), Vienna, Austria
| | - Christine A. Edwards
- School of Medicine, Dentistry and Nursing, University of Glasgow, Glasgow, United Kingdom
| | - Paul Kelly
- Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, Lusaka, Zambia
- Blizard Institute, Barts & The London School of Medicine, Queen Mary University of London, London, United Kingdom
- *Correspondence: Paul Kelly,
| | - Douglas J. Morrison
- Scottish Universities Environmental Research Centre, University of Glasgow, East Kilbride, United Kingdom
- Douglas J. Morrison,
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Buie MJ, Quan J, Windsor JW, Coward S, Hansen TM, King JA, Kotze PG, Gearry RB, Ng SC, Mak JWY, Abreu MT, Rubin DT, Bernstein CN, Banerjee R, Yamamoto-Furusho JK, Panaccione R, Seow CH, Ma C, Underwood FE, Ahuja V, Panaccione N, Shaheen AA, Holroyd-Leduc J, Kaplan GG, Balderramo D, Chong VH, Juliao-Baños F, Dutta U, Simadibrata M, Kaibullayeva J, Sun Y, Hilmi I, Raja Ali RA, Paudel MS, Altuwaijri M, Hartono JL, Wei SC, Limsrivilai J, El Ouali S, Vergara BI, Dao VH, Kelly P, Hodges P, Miao Y, Li M. Global Hospitalization Trends for Crohn's Disease and Ulcerative Colitis in the 21st Century: A Systematic Review With Temporal Analyses. Clin Gastroenterol Hepatol 2022:S1542-3565(22)00670-X. [PMID: 35863682 DOI: 10.1016/j.cgh.2022.06.030] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 06/21/2022] [Accepted: 06/25/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS The evolving epidemiologic patterns of inflammatory bowel disease (IBD) throughout the world, in conjunction with advances in therapeutic treatments, may influence hospitalization rates of IBD. We performed a systematic review with temporal analysis of hospitalization rates for IBD across the world in the 21st century. METHODS We systematically reviewed Medline and Embase for population-based studies reporting hospitalization rates for IBD, Crohn's disease (CD), or ulcerative colitis (UC) in the 21st century. Log-linear models were used to calculate the average annual percentage change (AAPC) with associated 95% confidence intervals (95% CIs). Random-effects meta-analysis pooled country-level AAPCs. Data were stratified by the epidemiologic stage of a region: compounding prevalence (stage 3) in North America, Western Europe, and Oceania vs acceleration of incidence (stage 2) in Asia, Eastern Europe, and Latin America vs emergence (stage 1) in developing countries. RESULTS Hospitalization rates for a primary diagnosis of IBD were stable in countries in stage 3 (AAPC, -0.13%; 95% CI, -0.72 to 0.97), CD (AAPC, 0.20%; 95% CI, -1.78 to 2.17), and UC (AAPC, 0.02%; 95% CI, -0.91 to 0.94). In contrast, hospitalization rates for a primary diagnosis were increasing in countries in stage 2 for IBD (AAPC, 4.44%; 95% CI, 2.75 to 6.14), CD (AAPC, 8.34%; 95% CI, 4.38 to 12.29), and UC (AAPC, 3.90; 95% CI, 1.29 to 6.52). No population-based studies were available for developing regions in stage 1 (emergence). CONCLUSIONS Hospitalization rates for IBD are stabilizing in countries in stage 3, whereas newly industrialized countries in stage 2 have rapidly increasing hospitalization rates, contributing to an increasing burden on global health care systems.
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Affiliation(s)
- Michael J Buie
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Joshua Quan
- Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Joseph W Windsor
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Stephanie Coward
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Tawnya M Hansen
- Section of Gastroenterology, Department of Internal Medicine, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - James A King
- Centre for Health Informatics, University of Calgary, Calgary, Alberta, Canada; Alberta Strategy for Patient Oriented Research Support Unit, Data Platform and Provincial Research Data Services, Alberta Health Services, Calgary, Alberta, Canada
| | - Paulo G Kotze
- Inflammatory Bowel Disease Outpatient Clinics, Catholic University of Paraná, Curitiba, Brazil
| | - Richard B Gearry
- Department of Medicine, University of Otago, Christchurch, New Zealand
| | - Siew C Ng
- Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Joyce W Y Mak
- Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Diseases, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Maria T Abreu
- Department of Medicine and Microbiology and Immunology, University of Miami, Miami, Florida
| | - David T Rubin
- Inflammatory Bowel Disease Center, University of Chicago, Chicago, Illinois
| | - Charles N Bernstein
- Inflammatory Bowel Disease Clinical and Research Centre, Department of Medicine, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada
| | - Rupa Banerjee
- Inflammatory Bowel Disease Center, Asian Institute of Gastroenterology, Hyderabad, India
| | - Jesus K Yamamoto-Furusho
- Inflammatory Bowel Disease Clinic, Department of Gastroenterology, National Institute of Medical Sciences and Nutrition, National Autonomous University of Mexico, Mexico City, Mexico
| | - Remo Panaccione
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Cynthia H Seow
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Christopher Ma
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Fox E Underwood
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Vineet Ahuja
- Department of Gastroenterology, All India Institute of Medical Sciences, New Delhi, India
| | - Nicola Panaccione
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Abdel-Aziz Shaheen
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Jayna Holroyd-Leduc
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Gilaad G Kaplan
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada.
| | | | - Domingo Balderramo
- Gastroenterology Department, Hospital Privado Universitario de Córdoba, Córdoba, Argentina
| | - Vui Heng Chong
- Division of Gastroenterology and Hepatology, Department of Medicine, Raja Isteri Pengiran Anak Saleha Hospital, Brunei Darussalam
| | - Fabián Juliao-Baños
- Department of Gastroenterology, Pablo Tobon Uribe Hospital, Medellín, Colombia
| | - Usha Dutta
- Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Marcellus Simadibrata
- Division of Gastroenterology, Department Internal Medicine, Faculty Medicine, Dr. Cipto Mangunkusumo Hospital Indonesia, Universitas Indonesia, Jakarta, Indonesia
| | - Jamilya Kaibullayeva
- Research Institute of Cardiology and Internal Diseases, Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - Yang Sun
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming City, Yunnan, China; Clinical Research Center for Digestive Diseases, Kunming, Yunnan, China
| | - Ida Hilmi
- Division of Gastroenterology, Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Raja Affendi Raja Ali
- Gastroenterology Unit, Gut Research Group, Faculty of Medicine, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Mukesh Sharma Paudel
- Department of Gastroenterology, National Academy of Medical Sciences, Kathmandu, Nepal
| | - Mansour Altuwaijri
- Division of Gastroenterology, Department of Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Juanda Leo Hartono
- Yong Loo Lin School of Medicine, National University of Singapore, Division of Gastroenterology and Hepatology, National University Hospital, Singapore
| | - Shu Chen Wei
- Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
| | - Julajak Limsrivilai
- Division of Gastroenterology, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Sara El Ouali
- Digestive Disease Institute, Cleveland Clinic Abu Dhabi, Abu Dhabi, United Arab Emirates
| | - Beatriz Iade Vergara
- Centro de Asistencia del Sindicato Médico del Uruguay Cooperativa de Servicios Médicos, Montevideo, Uruguay
| | - Viet Hang Dao
- Internal Medicine, Hanoi Medical University, Hanoi, Vietnam
| | - Paul Kelly
- Blizard Institute, Barts and The London School of Medicine, Queen Mary University of London, London, England, United Kingdom; Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, Lusaka, Zambia
| | - Phoebe Hodges
- Blizard Institute, Barts and The London School of Medicine, Queen Mary University of London, London, England, United Kingdom; Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, Lusaka, Zambia
| | - Yinglei Miao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming City, Yunnan, China; Clinical Research Center for Digestive Diseases, Kunming, Yunnan, China
| | - Maojuan Li
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming City, Yunnan, China; Clinical Research Center for Digestive Diseases, Kunming, Yunnan, China
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Kayamba V, Mulenga C, Mubbunu M, Kazhila L, Hodges P, Kelly P. Association between oesophageal cancer and biomass smoke exposure: a case-control study. Ecancermedicalscience 2022; 16:1422. [PMID: 36158985 PMCID: PMC9458259 DOI: 10.3332/ecancer.2022.1422] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Indexed: 11/07/2022] Open
Abstract
Most African populations are regularly exposed to biomass smoke, but knowledge of associated health implications is limited. This study aimed to investigate the association between oesophageal cancer (OC) and exposure to biomass smoke. This case-control study was conducted in Lusaka, Zambia. Cases were patients with endoscopically diagnosed OC, while controls were healthy volunteers. Questionnaires were used to collect lifestyle risk factors. Two sets of data were analysed; one with unmatched cases and controls and the other one with matching by age and sex. We enrolled 366 patients (131 cases and 235 controls). Among the cases, 50 (38%) were female and the median age was 56 years (IQR = 46–65 years). OC was significantly associated with domestic exposure to biomass smoke in univariate analysis (OR: 3.1; 95% CI: 1.7–5.6, p < 0.001) and after adjusting for potential confounders (OR: 2.1; 95% CI: 1.1–3.8, p = 0.017). Matched comparisons showed similar results for this association in univariate analysis (OR: 2.9; 95% CI: 1.5–5.8, p < 0.001) and using conditional logistic regression (OR: 2.8; 95% CI: 1.3–5.9, p = 0.005). Other risk factors found to be associated with OC were rural residence (OR: 2.3; 95% CI: 1.0–5.3, p = 0.004), lack of formal education (OR: 3.9; 95% CI: 1.5–9.9, p = 0.04) and living in poor housing (OR: 2.4; 95% CI: 1.1–5.6, p = 0.034). In conclusion, there is an association between OC and domestic exposure to biomass smoke and other lifestyle factors linked to low socio-economic status.
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Affiliation(s)
- Violet Kayamba
- Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, PO Box 50398, Lusaka, Zambia
- https://orcid.org/0000-0002-6521-2501
| | - Chola Mulenga
- Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, PO Box 50398, Lusaka, Zambia
| | - Malambo Mubbunu
- Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, PO Box 50398, Lusaka, Zambia
| | - Lydia Kazhila
- Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, PO Box 50398, Lusaka, Zambia
| | - Phoebe Hodges
- Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, PO Box 50398, Lusaka, Zambia
- Blizard Institute, Barts & The London School of Medicine and Dentistry, Queen Mary University of London, 4 Newark Street, London E1 2AT, UK
| | - Paul Kelly
- Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, PO Box 50398, Lusaka, Zambia
- Blizard Institute, Barts & The London School of Medicine and Dentistry, Queen Mary University of London, 4 Newark Street, London E1 2AT, UK
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Zyambo K, Hodges P, Chandwe K, Chisenga CC, Mayimbo S, Amadi B, Kelly P, Kayamba V. Selenium status in adults and children in Lusaka, Zambia. Heliyon 2022; 8:e09782. [PMID: 35800716 PMCID: PMC9253361 DOI: 10.1016/j.heliyon.2022.e09782] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 02/14/2022] [Accepted: 06/20/2022] [Indexed: 10/26/2022] Open
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Zyambo K, Hodges P, Chandwe K, Mweetwa M, Westcott J, Krebs NF, Amadi B, Kelly P. Reduced Fractional Absorption of Zinc in Children With Environmental Enteropathy in Zambia. J Pediatr Gastroenterol Nutr 2022; 74:277-283. [PMID: 34469927 DOI: 10.1097/mpg.0000000000003292] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
OBJECTIVES We measured fractional absorption of zinc (FAZ) in children with environmental enteropathy (EE) and carried out transcriptomic analysis of biopsies from these children in order to compare FAZ to histology of intestinal biopsies, expression of zinc transporter genes, and biomarkers of enteropathy. METHODS Fractional absorption of a standardized aqueous dose of zinc was measured by a dual isotope ratio technique in a cohort of children ages between 9 and 24 months in Lusaka, Zambia, who all had non-responsive stunting. Gene expression analysis was carried out on biopsies through RNA sequencing using an Illumina HiSeq2000 platform. RESULTS All 33 children had histological features of environmental enteropathy and plasma zinc concentrations below the lower limit of normal. Measured FAZ ranged from 0.18 to 0.93; all values >0.55 were observed in girls. FAZ was negatively correlated with faecal myeloperoxidase (MPO) (ρ = -0.51, n = 17; P = 0.04) and faecal calprotectin (ρ = -0.50, n = 16; P = 0.05), but not blood biomarkers. Of 41 genes with known roles in zinc metabolism, only three metallothionein genes were significantly correlated with FAZ. CONCLUSIONS Zinc homeostasis is impaired in children with environmental enteropathy, and was inversely correlated with mucosal inflammation. Reduced FAZ without specific changes in expression of most zinc transporter genes could be explained by reduced absorptive surface area due to villus/microvillus atrophy.
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Affiliation(s)
- Kanekwa Zyambo
- Tropical Gastroenterology & Nutrition group, University of Zambia School of Medicine, Lusaka, Zambia
| | - Phoebe Hodges
- Tropical Gastroenterology & Nutrition group, University of Zambia School of Medicine, Lusaka, Zambia
- Blizard Institute, Barts & The London School of Medicine, Queen Mary University of London, London, UK
| | - Kanta Chandwe
- Tropical Gastroenterology & Nutrition group, University of Zambia School of Medicine, Lusaka, Zambia
| | - Monica Mweetwa
- Tropical Gastroenterology & Nutrition group, University of Zambia School of Medicine, Lusaka, Zambia
| | - Jamie Westcott
- Section of Pediatric Nutrition, University of Colorado School of Medicine, Aurora, CO
| | - Nancy F Krebs
- Section of Pediatric Nutrition, University of Colorado School of Medicine, Aurora, CO
| | - Beatrice Amadi
- Tropical Gastroenterology & Nutrition group, University of Zambia School of Medicine, Lusaka, Zambia
| | - Paul Kelly
- Tropical Gastroenterology & Nutrition group, University of Zambia School of Medicine, Lusaka, Zambia
- Blizard Institute, Barts & The London School of Medicine, Queen Mary University of London, London, UK
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Besomi M, Hodges P. Consensus for Experimental Design in Electromyography (CEDE) project: Amplitude Normalisation matrix. J Sci Med Sport 2021. [DOI: 10.1016/j.jsams.2021.09.158] [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: 11/27/2022]
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Besomi M, Hodges P, Hutchinson L, Vicenzino B. Morphological and mechanical properties of the iliotibial band: A Systematic Review. J Sci Med Sport 2021. [DOI: 10.1016/j.jsams.2021.09.162] [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: 11/25/2022]
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Besomi M, Hodges P, van den Hoorn W, Vicenzino B. Electromyography recordings of the tensor fascia latae muscle during dynamic tasks: A comparison of surface and fine-wire electrodes. J Sci Med Sport 2021. [DOI: 10.1016/j.jsams.2021.09.051] [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: 10/19/2022]
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Hodges P, Kelly P, Kayamba V. Helicobacter pylori infection and hypochlorhydria in Zambian adults and children: A secondary data analysis. PLoS One 2021; 16:e0256487. [PMID: 34449790 PMCID: PMC8396721 DOI: 10.1371/journal.pone.0256487] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 07/28/2021] [Indexed: 11/19/2022] Open
Abstract
Background Hypochlorhydria (gastric pH >4) increases susceptibility to diarrhoea, iron deficiency, and gastric cancer. We sought to clarify the prevalence of this condition and its predisposing factors in Zambia by pooling data from previous studies conducted in hospital and community settings. Methods Gastric pH was measured in participants from five separate studies by collecting gastric aspirate from fasted adults and children under 3 years of age undergoing gastroscopy. Gastric pH was correlated with serological testing for Human Immunodeficiency Virus (HIV) and Helicobacter pylori (H. pylori) infections. Results We studied 597 individuals (487 adults and 110 children). Hypochlorhydria was present in 53% of adults and 31% of children. HIV infection was detected in 41% of adults and 11% of children. H. pylori serology was available for 366 individuals: 93% of adults and 6% of children were seropositive. In univariate analysis, hypochlorhydria was significantly associated with HIV seropositivity (OR 1.7; 95% CI 1.2–2.4; p = 0.004) and H. pylori antibody seropositivity (OR 4.9; 95% CI 2.8–8.6; p<0.0001), and with advancing age in HIV negative individuals (p = 0.0001). In multivariable analysis, only H. pylori was associated with hypochlorhydria (OR 4.0; 95% CI 2.2–7.2; p<0.0001) while excluding possible exposure to proton pump inhibitors. Conclusions Hypochlorhydria is common in our population, with H. pylori being the dominant factor. Only young HIV seronegative individuals had a low prevalence of hypochlorhydria. This may have implications for the risk of other health conditions including gastric cancer.
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Affiliation(s)
- Phoebe Hodges
- Tropical Gastroenterology & Nutrition group, University of Zambia School of Medicine Department of Internal Medicine, Lusaka, Zambia
- Blizard Institute, Barts & The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Paul Kelly
- Tropical Gastroenterology & Nutrition group, University of Zambia School of Medicine Department of Internal Medicine, Lusaka, Zambia
- Blizard Institute, Barts & The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Violet Kayamba
- Tropical Gastroenterology & Nutrition group, University of Zambia School of Medicine Department of Internal Medicine, Lusaka, Zambia
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Abstract
Environmental enteric dysfunction (EED) is a syndrome characterized by impairments of digestion and absorption and intestinal barrier failure in people living in insanitary or tropical environments. There is substantial evidence that it contributes to impaired linear growth of millions of children in low- and middle-income countries, to slowed neurocognitive development, and to diminished responses to oral vaccines. It represents the functional consequences of environmental enteropathy, an asymptomatic inflammatory disorder of the mucosa, and there is considerable overlap with the enteropathy observed in severe clinical malnutrition. The majority of studies of EED have employed functional tests based on lactulose permeation to define the presence of abnormal leak in the gut. However, where intestinal biopsies can safely be collected the opportunity then arises to study the underlying enteropathy in cellular and molecular detail, as well as to measure important functional elements such as enzyme expression. The purpose of this narrative review is to summarize the current understanding of environmental enteropathy obtained from small intestinal biopsies, and prospects for future work. We review histology, electron microscopy, transcription and protein expression, physiological measures, and the microbiome. We conclude that while noninvasive biomarkers of enteropathy and intestinal dysfunction permit large-scale studies of unquestionable value, intestinal biopsies are still required to investigate pathophysiology in depth.
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Affiliation(s)
- Phoebe Hodges
- Tropical Gastroenterology & Nutrition group, University of Zambia School of Medicine, Lusaka, Zambia.,Queen Mary University of London, London, UK
| | - Mizinga Tembo
- Tropical Gastroenterology & Nutrition group, University of Zambia School of Medicine, Lusaka, Zambia
| | - Paul Kelly
- Tropical Gastroenterology & Nutrition group, University of Zambia School of Medicine, Lusaka, Zambia.,Queen Mary University of London, London, UK
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Hall M, Dobson F, Plinsinga M, Mailloux C, Starkey S, Smits E, Hodges P, Vicenzino B, Schabrun SM, Masse-Alarie H. Effect of exercise on pain processing and motor output in people with knee osteoarthritis: a systematic review and meta-analysis. Osteoarthritis Cartilage 2020; 28:1501-1513. [PMID: 32783909 DOI: 10.1016/j.joca.2020.07.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 06/29/2020] [Accepted: 07/28/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Guidelines recommend exercise as a core treatment for knee osteoarthritis. However, it is unclear how exercise affects measures of pain processing and motor function. The aim was to evaluate the effect of exercise on measures of pain processing and motor function in people with knee osteoarthritis. METHODS We searched five electronic databases (MEDLINE, EMBASE, CINAHL, SCOPUS and Cochrane Central Register of Controlled Trials) for studies on knee osteoarthritis, of any design, evaluating pain processing and motor function before and after exercise. Data were pooled with random-effects meta-analysis. Study quality was assessed using the Downs and Black and quality of evidence was assessed using the GRADE. RESULTS Eighteen studies were eligible and 16 were included. Following acute exercise, pressure pain threshold increased local to the study limb (standardised mean difference [95% confidence interval (CI)] 0.26, [0.02, 0.51], n = 159 from 5 studies), but there was no statistically significant change remote from the study limb (0.09, [-0.11, 0.29], n = 90 from 4 studies). Following an exercise program (range 5-12 weeks) there were no statistically significant changes in pressure pain threshold (local 0.23, [-0.01, 0.47], n = 218 from 8 studies; remote 0.33 [-0.13, 0.79], n = 76 from 4 studies), temporal pain summation (0.38 [-0.08, 0.85], n = 122 from 3 studies) or voluntary quadriceps muscle activation (4.23% [-1.84 to 10.30], n = 139 from 4 studies). CONCLUSION Very-low quality evidence suggests that pressure pain threshold increases following acute exercise. Very-low quality evidence suggests that pressure pain threshold, temporal pain summation or voluntary quadriceps activation do not change statistically significantly following exercise programs.
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Affiliation(s)
- M Hall
- Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy, School of Health Sciences, The University of Melbourne, Victoria, Australia.
| | - F Dobson
- Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy, School of Health Sciences, The University of Melbourne, Victoria, Australia.
| | - M Plinsinga
- School of Health and Rehabilitation Sciences, University of Queensland, Queensland, Australia.
| | - C Mailloux
- Centre Interdisciplinaire de Recherche en Réadaptation et Intégration Sociale (CIRRIS), Université Laval, Quebec, Canada.
| | - S Starkey
- Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy, School of Health Sciences, The University of Melbourne, Victoria, Australia.
| | - E Smits
- School of Health and Rehabilitation Sciences, University of Queensland, Queensland, Australia; Recover Injury Research Centre, University of Queensland, Queensland, Australia.
| | - P Hodges
- School of Health and Rehabilitation Sciences, University of Queensland, Queensland, Australia.
| | - B Vicenzino
- School of Health and Rehabilitation Sciences, University of Queensland, Queensland, Australia.
| | - S M Schabrun
- Neuroscience Research Australia, Randwick, New South Wales, Australia.
| | - H Masse-Alarie
- School of Health and Rehabilitation Sciences, University of Queensland, Queensland, Australia; Centre Interdisciplinaire de Recherche en Réadaptation et Intégration Sociale (CIRRIS), Université Laval, Quebec, Canada.
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Hodges P, Kelly P. Inflammatory bowel disease in Africa: what is the current state of knowledge? Int Health 2020; 12:222-230. [PMID: 32133502 PMCID: PMC7320423 DOI: 10.1093/inthealth/ihaa005] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/16/2019] [Accepted: 01/17/2020] [Indexed: 12/20/2022] Open
Abstract
Inflammatory bowel disease (IBD) is increasingly recognized as a global disease in the twenty-first century; however, little is known about its epidemiology in Africa. We conducted a literature review in order to assess what is currently known on this subject, the results of which are reported here. Based on available observational studies, it appears that the incidence of IBD in Africa is rising, although comprehensive epidemiological data are lacking. This is likely due to multiple factors, including shifting trends in diet and exposure to environmental pathogens. Many challenges relating to IBD exist for healthcare systems in Africa, including the need for improved access to diagnostic facilities such as endoscopy and histopathology, and the potential economic burden of treatment. Intestinal TB also represents a significant confounding factor in the diagnosis of IBD in Africa.
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Affiliation(s)
- Phoebe Hodges
- Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Paul Kelly
- Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK.,Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, University Teaching Hospital Nationalist Road, Lusaka, Zambia
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Talukdar S, Vasdev R, Ernst M, Hodges P, Rubin N, Gaherty C, Mullany S. Reduced opioid prescribing protocol for postoperative pain management of gynecologic oncology surgery patients. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.541] [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: 11/27/2022]
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Besomi M, Salomoni S, Vicenzino B, Hodges P. Shear wave elastography of the iliotibial band: Reliability of measures in different anatomical regions and tasks. J Sci Med Sport 2019. [DOI: 10.1016/j.jsams.2019.08.078] [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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16
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Besomi M, Salomoni S, Vicenzino B, Hodges P. Shear elastic modulus of the iliotibial band differs between postures and tasks in runners. J Sci Med Sport 2019. [DOI: 10.1016/j.jsams.2019.08.286] [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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17
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Lawrenson P, Crossley K, Hodges P, Vicenzino B, King M, Heerey J, Semciw A. Hip muscle activity in walking: a comparison between athletes with hip-related pain and controls. J Sci Med Sport 2019. [DOI: 10.1016/j.jsams.2019.08.264] [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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18
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Maclachlan L, Collins N, Hodges P, Vicenzino B. Can the provision of written information change the natural course of patellofemoral pain? J Sci Med Sport 2019. [DOI: 10.1016/j.jsams.2019.08.223] [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: 11/29/2022]
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Collins N, Salomoni S, Elgueta Cancino E, Tucker K, Hodges P. Foot orthoses induce immediate changes in intrinsic foot muscle EMG activity during walking. J Sci Med Sport 2019. [DOI: 10.1016/j.jsams.2019.08.164] [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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20
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Franettovich Smith M, Vicenzino B, Hides J, Hodges P, Collins N. Intrinsic foot muscle morphology, foot posture, pain and function in plantar heel pain: A preliminary investigation. J Sci Med Sport 2018. [DOI: 10.1016/j.jsams.2018.09.148] [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: 10/28/2022]
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21
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Maclachlan L, Hodges P, Collins N, Vicenzino B. A cross-sectional study of somatosensory and psychological factors in patellofemoral pain. J Sci Med Sport 2018. [DOI: 10.1016/j.jsams.2018.09.121] [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: 11/15/2022]
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22
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Collins N, Salomoni S, Elgueta Cancino E, Tucker K, Hodges P. A novel insertion technique for intramuscular measurement of EMG activity of the deep intrinsic foot muscles during walking. J Sci Med Sport 2018. [DOI: 10.1016/j.jsams.2018.09.150] [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]
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23
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Plinsinga M, Coombes B, Mellor R, Nicolson P, Grimaldi A, Hodges P, Bennell K, Vicenzino B. Psychological factors not strength deficits are associated with severity of gluteal tendinopathy: A cross-sectional study. Eur J Pain 2018; 22:1124-1133. [DOI: 10.1002/ejp.1199] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/23/2018] [Indexed: 01/12/2023]
Affiliation(s)
- M.L. Plinsinga
- School of Health and Rehabilitation Sciences; The University of Queensland; Brisbane Qld Australia
| | - B.K. Coombes
- School of Biomedical Sciences; The University of Queensland; Brisbane Qld Australia
| | - R. Mellor
- School of Health and Rehabilitation Sciences; The University of Queensland; Brisbane Qld Australia
| | - P. Nicolson
- Centre for Health, Exercise and Sports Medicine; Department of Physiotherapy; University of Melbourne; Carlton Vic. Australia
| | - A. Grimaldi
- School of Health and Rehabilitation Sciences; The University of Queensland; Brisbane Qld Australia
- Physiotec; Tarragindi Qld Australia
| | - P. Hodges
- NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury and Health; School of Health and Rehabilitation Sciences; The University of Queensland; Brisbane Qld Australia
| | - K. Bennell
- Centre for Health, Exercise and Sports Medicine; Department of Physiotherapy; University of Melbourne; Carlton Vic. Australia
| | - B. Vicenzino
- School of Health and Rehabilitation Sciences; The University of Queensland; Brisbane Qld Australia
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Semciw A, Lawrenson P, Hoggarth M, Hodges P, Vicenzino B, Crossley K, King M, Heerey J, Elliott J. Heterogeneous adiposity within gluteus minimus in healthy young adults. J Sci Med Sport 2017. [DOI: 10.1016/j.jsams.2017.09.304] [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: 10/18/2022]
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Allison K, Hodges P, Grimaldi A, Vicenzino B, Wrigley T, Bennell K. Single leg stance control & hip abductor strength in individuals with gluteal tendinopathy – Targets for treatment? J Sci Med Sport 2017. [DOI: 10.1016/j.jsams.2017.01.191] [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: 10/20/2022]
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26
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Allison, Bennell K, Wrigley T, Vicenzino B, Grimaldi A, Hodges P. Gait kinematics and kinetics in individuals with gluteal tendinopathy. J Sci Med Sport 2015. [DOI: 10.1016/j.jsams.2015.12.168] [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: 11/26/2022]
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27
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Diamond, Wrigley T, Hinman R, Hodges P, O’Donnell J, Takla A, Bennell K. Isometric and isokinetic hip strength in symptomatic femoroacetabular impingement. J Sci Med Sport 2015. [DOI: 10.1016/j.jsams.2015.12.169] [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: 11/29/2022]
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Smith M, Chang A, Hodges P. Recovery of balance is impaired and abdominal muscle activity is increased in chronic obstructive pulmonary disease. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.3406] [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: 11/26/2022]
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Stafford R, Coughlin G, Lutton N, Hodges P. Measurement of pelvic floor muscle activity from transperineal ultrasound imaging in men: a validation study with invasive electromyography. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.3405] [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: 11/29/2022]
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Chipchase L, Vicenzino B, Hodges P, Jones E, Schabrun S. Lateral epicondylalgia, symptom status and motor cortex changes. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.421] [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]
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Hodges P, Nielsen A, French S. Key messages for patients with low back pain: expert and consumer opinion. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.3407] [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: 10/23/2022]
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Hodges P. Cutting edge in rehabilitation: New frontiers in driving neuroplasticity. J Sci Med Sport 2014. [DOI: 10.1016/j.jsams.2014.11.137] [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: 11/15/2022]
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Hodges P. Is it ‘No pain, no gain or ‘Pain, no gain’? Reconsidering the impact of pain on movement and learning. J Sci Med Sport 2014. [DOI: 10.1016/j.jsams.2014.11.129] [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: 11/24/2022]
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34
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Wyndow N, Crossley K, Hodges P, Tsao H, Ozturk H, Hart H, Vicenzino B, Collins N. The immediate effects of foot orthoses on lower limb neuromotor control in patellofemoral joint osteoarthritis: A pilot study. J Sci Med Sport 2014. [DOI: 10.1016/j.jsams.2014.11.066] [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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Weickert MO, Hodges P, Tan BK, Randeva HS. Neuroendocrine and endocrine dysfunction in the hyperinsulinemic PCOS patient: the role of metformin. MINERVA ENDOCRINOL 2012; 37:25-40. [PMID: 22382613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Metformin is a widely used and extensively studied insulin sensitising drug for the treatment of women with polycystic ovary syndrome (PCOS), with various actions in tissues responding to insulin that include the liver, skeletal muscle, adipose tissue, the endothelium of blood vessels, and the ovaries. Treatment of PCOS women with metformin has been shown to reduce fasting glucose levels, blood pressure, and serum androgens; further effects of metformin in women with PCOS may include direct effects on the central nervous system; and indirect effects via the modification of gut hormone and adipokine synthesis and/or secretion. A number of "novel" adipokines and metabolic factors have been recently identified which may play a role both in the pathogenesis and the treatment of women with PCOS. We here discuss recent advances in the area, with a focus on neuroendocrine and endocrine dysfunctions in women with PCOS and the potential role of metformin in this context.
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Affiliation(s)
- M O Weickert
- Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK.
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Rainoldi A, Falla D, Mellor R, Bennell K, Hodges P. Myoelectric manifestations of fatigue in vastus lateralis, medialis obliquus and medialis longus muscles. J Electromyogr Kinesiol 2008; 18:1032-7. [PMID: 17644358 DOI: 10.1016/j.jelekin.2007.05.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2005] [Revised: 04/25/2007] [Accepted: 05/07/2007] [Indexed: 11/28/2022] Open
Abstract
The purpose of this study was to determine whether surface electromyography (EMG) assessment of myoelectric manifestations of muscle fatigue is capable of detecting differences between the vastus lateralis and medialis muscles which are consistent with the results of previous biopsy studies. Surface EMG signals were recorded from the vastus medialis longus (VML), vastus medialis obliquus (VMO) and vastus lateralis (VL) muscles during isometric knee extension contractions at 60% and 80% of the maximum voluntary contraction (MVC) for 10s and 60s, respectively. Initial values and rate of change of mean frequency (MNF), average rectified value (ARV) and conduction velocity (CV) of the EMG signal were calculated. Comparisons between the two force levels revealed that the initial values of MNF for the VL muscle were greater at 80% MVC compared to 60% MVC (P<0.01). Comparisons between the vasti muscles demonstrated lower initial values of CV for VMO compared to VL at 60% MVC (P<0.01) and lower than VML and VL at 80% MVC (P<0.01). In addition, initial values of MNF were higher for VL with respect to both VML and VMO at 80% MVC (P<0.01) and initial estimates of ARV were higher for VMO compared to VML at both force levels (P<0.01 at 60% MVC and P<0.05 at 80% MVC). For the sustained contraction at 80% MVC, VL demonstrated a greater decrease in CV over time compared to VMO (P<0.05). These findings suggest that surface EMG signals and their time course during sustained isometric contractions may be useful to non-invasively describe functional differences between the vasti muscles.
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Affiliation(s)
- A Rainoldi
- Motor Science Research Center, SUISM Università degli Studi di Torino, P.za Bernini 12 10143, Torino, Italy.
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Falla D, Jull G, Hodges P, Vicenzino B. An endurance-strength training regime is effective in reducing myoelectric manifestations of cervical flexor muscle fatigue in females with chronic neck pain. Clin Neurophysiol 2006; 117:828-37. [PMID: 16490395 DOI: 10.1016/j.clinph.2005.12.025] [Citation(s) in RCA: 110] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2005] [Revised: 11/29/2005] [Accepted: 12/25/2005] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The purpose of this study was to investigate whether an endurance-strength training program is effective in reducing myoelectric manifestations of sternocleidomastoid (SCM) and anterior scalene (AS) muscle fatigue which have been found to be greater in people with chronic neck pain. METHODS Fifty-eight female patients with chronic non-severe neck pain were randomized into one of two 6-week exercise intervention groups: an endurance-strength training regime for the cervical flexor muscles or a referent exercise intervention involving low load retraining of the cranio-cervical flexor muscles. The primary outcomes were a change in maximum voluntary contraction (MVC) force and change of the initial value and rate of change of the mean frequency, average rectified value and conduction velocity detected from the SCM and AS muscles during sub-maximal isometric cervical flexion contractions at 50, 25 and 10% MVC. RESULTS At the 7th week follow-up assessment, the endurance-strength training group revealed a significant increase in MVC force and a reduction in the estimates of the initial value and rate of change of the mean frequency for both the SCM and AS muscles (P<0.05). Both exercise groups reported a reduced average intensity of neck pain and reduced neck disability index score (P<0.05). CONCLUSIONS An endurance-strength exercise regime for the cervical flexor muscles is effective in reducing myoelectric manifestations of superficial cervical flexor muscle fatigue as well as increasing cervical flexion strength in a group of patients with chronic non-severe neck pain. SIGNIFICANCE Provision of load to challenge the neck flexor muscles is required to reduce the fatigability of the SCM and AS muscles in people with neck pain. Improvements in cervical muscle strength and reduced fatigability may be responsible for the reported efficacy with this type of exercise program.
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Affiliation(s)
- D Falla
- Division of Physiotherapy, The University of Queensland, Brisbane, Qld, Australia.
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Chapman A, Vicenzino B, Blanch P, Hodges P. 206 Multidiscipline training interferes with motor learning in triathletes. J Sci Med Sport 2005. [DOI: 10.1016/s1440-2440(17)30702-8] [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: 11/28/2022]
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Crossley K, Wrigley T, Cowan S, Hodges P, Bennell K, Herbert R. 45 Quadriceps muscle function is impaired in response to knee pain. J Sci Med Sport 2005. [DOI: 10.1016/s1440-2440(17)30540-6] [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: 11/24/2022]
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42
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Hodges P, Jull G. Does strengthening the abdominal muscles prevent low back pain? J Rheumatol 2000; 27:2286-8. [PMID: 10990257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Cowan S, Bennell K, Crossley K, Hodges P, McConnell J. Delayed electromyographic onset of vastas medialis oblliquus relative to vastas lateralis in subjects with patellofemoral pain syndrome. J Sci Med Sport 1999. [DOI: 10.1016/s1440-2440(99)80042-5] [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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Cowan S, Bennell K, Crossley K, Hodges P, McConnell J. Delayed electromyographic onset of vastus medialis obliquus relative to vastus lateralis in subjects with patellofemeral pain syndrome. J Sci Med Sport 1999. [DOI: 10.1016/s1440-2440(99)80019-x] [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: 11/27/2022]
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Abstract
Evaluation of trunk movements, trunk muscle activation, intra-abdominal pressure and displacement of centres of pressure and mass was undertaken to determine whether trunk orientation is a controlled variable prior to and during rapid bilateral movement of the upper limbs. Standing subjects performed rapid bilateral symmetrical upper limb movements in three directions (flexion, abduction and extension). The results indicated a small (0.4-3.3 degrees) but consistent initial angular displacement between the segments of the trunk in a direction opposite to that produced by the reactive moments resulting from limb movement. Phasic activation of superficial trunk muscles was consistent with this pattern of preparatory motion and with the direction of motion of the centre of mass. In contrast, activation of the deep abdominal muscles was independent of the direction of limb motion, suggesting a non-direction specific contribution to spinal stability. The results support the opinion that feedforward postural responses result in trunk movements, and that orientation of the trunk and centre of mass are both controlled variables in relation to rapid limb movements.
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Affiliation(s)
- P Hodges
- Department of Neuroscience, Karolinska Institute, Stockholm, Sweden
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Hodges P. Common goals: do physiotherapists in research share the same goals as clinicians? Physiother Res Int 1998; 3:v-vi. [PMID: 9718612 DOI: 10.1002/pri.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abstract
OBJECTIVE Differences in the perspectives of severely and persistently ill patients, their family members, and clinical care providers on key aspects of community-based care were examined to help inform community service planning and development. METHODS A sample of 183 patients being considered for relocation from psychiatric facilities in Alberta, Canada, to community-based care, were interviewed, as were their primary clinical care providers. Family members of 130 patients were also interviewed. RESULTS Among the 130 patient-family pairs, 41 percent disagreed about the desirability of relocation, with fewer patients favoring relocation than families. Forty-nine percent of the pairs disagreed about the desired proximity to the family of the relocated patient, with the patient desiring closer proximity than the family member in about half of these cases. Fifty-three percent of the pairs disagreed about the amount of financial and emotional support that the family would provide after relocation. In half of these cases, patients believed the family would provide a higher level of support than the family indicated it could. Among the patients, 49 percent preferred independent living, whereas only 10 percent of family members and 17 percent of clinical care providers preferred it. Fifty-five percent of patients expressed a clear desire to work, whereas care providers believed that only 12 percent of patients were employable. CONCLUSIONS Persistently mentally ill residents of psychiatric facilities express clear preferences about key aspects of community-based care when they are asked, and these preferences often reflect different views from those expressed by either family members or clinical care providers.
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Affiliation(s)
- H L Holley
- Department of Community Health Sciences, Faculty of Medicine, University of Calgary, Alberta, Canada.
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Holley HL, Jeffers B, Hodges P. Potential for community relocation among residents of Alberta's psychiatric facilities: a needs assessment. Can J Psychiatry 1997; 42:750-7. [PMID: 9307836 DOI: 10.1177/070674379704200708] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To identify the proportion of residents in Alberta's psychiatric hospitals who would be relocatable to community-based alternatives to care if appropriate programs were made available. METHODS A Survey of a representative sample of residents in all psychiatric hospitals and care centres was undertaken, excluding patients in specialized programs for forensic psychiatry, brain injury, and substance abuse. RESULTS Findings indicate that 11% of institutionalized patients could be considered good candidates for relocation to community-based alternative care. A further 35% were considered to have potential for relocation provided an intensive and complex array of services was first made available. CONCLUSION Results support a phased-in approach to hospital downsizing and the need for considerable transitional funding. Because hospital downsizing is unlikely to save dollars, at least in the short term, reforms must remain guided by humanitarian motivations to improve quality of life for persons with severe and persistent mental illnesses.
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Affiliation(s)
- H L Holley
- Department of Psychiatry, Bow Valley Centre, Calgary Regional Health Authority, Alberta.
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Andrews JF, Ferguson C, Roberts S, Hodges P. What's up, Billy Jo? Deaf children and bilingual-bicultural instruction in east-central Texas. Am Ann Deaf 1997; 142:16-25. [PMID: 9127497 DOI: 10.1353/aad.2012.0233] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Seven deaf children attended a bilingual-bicultural (bi-bi) prekindergarten, kindergarten, and first grade from 1993 to 1996 in an east-central Texas public school. The children had diverse backgrounds (African American, Hispanic, White) and various intellectual, cognitive, and linguistic abilities. We detail the backgrounds of the seven children and their families and describe three bi-bi classrooms. We present standardized test scores on cognition (Bracken Test of Basic Concepts) and academic achievement (Stanford Achievement Test, 9th edition, and Woodcock-Johnson Psycho-Educational Battery). When, with one exception, the children completed first grade, they all tested at grade level. (The exception was a younger child who had only completed kindergarten but who nonetheless tested at the first-grade level). We interpret our findings in light of theories of first- and second-language acquisition and discuss the feasibility of establishing bi-bi programs in areas where no large Deaf community exists. We also note our plans to evaluate the seven children again, at the end of second grade in spring 1997.
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Lowe C, Hodges P. Health in Action. Leadersh Health Serv 1996; 5:39-40. [PMID: 10159553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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