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Jakwerth CA, Weckmann M, Illi S, Charles H, Zissler UM, Oelsner M, Guerth F, Omony J, Nemani SSP, Grychtol R, Dittrich AM, Skevaki C, Foth S, Weber S, Alejandre Alcazar MA, van Koningsbruggen-Rietschel S, Brock R, Blau S, Hansen G, Bahmer T, Rabe KF, Brinkmann F, Kopp MV, Chaker AM, Schaub B, von Mutius E, Schmidt-Weber CB. 17q21 Variants Disturb Mucosal Host Defense in Childhood Asthma. Am J Respir Crit Care Med 2024; 209:947-959. [PMID: 38064241 DOI: 10.1164/rccm.202305-0934oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 12/07/2023] [Indexed: 03/13/2024] Open
Abstract
Rationale: The strongest genetic risk factor for childhood-onset asthma, the 17q21 locus, is associated with increased viral susceptibility and disease-promoting processes.Objectives: To identify biological targets underlying the escalated viral susceptibility associated with the clinical phenotype mediated by the 17q21 locus.Methods: Genome-wide transcriptome analysis of nasal brush samples from 261 children (78 healthy, 79 with wheezing at preschool age, 104 asthmatic) within the ALLIANCE (All-Age-Asthma) cohort, with a median age of 10.0 (range, 1.0-20.0) years, was conducted to explore the impact of their 17q21 genotype (SNP rs72163891). Concurrently, nasal secretions from the same patients and visits were collected, and high-sensitivity mesoscale technology was employed to measure IFN protein levels.Measurements and Main Results: This study revealed that the 17q21 risk allele induces a genotype- and asthma/wheeze phenotype-dependent enhancement of mucosal GSDMB expression as the only relevant 17q21-encoded gene in children with preschool wheeze. Increased GSDMB expression correlated with the activation of a type-1 proinflammatory, cell-lytic immune, and natural killer signature, encompassing key genes linked to an IFN type-2-signature (IFNG, CXCL9, CXCL10, KLRC1, CD8A, GZMA). Conversely, there was a reduction in IFN type 1 and type 3 expression signatures at the mRNA and protein levels.Conclusions: This study demonstrates a novel disease-driving mechanism induced by the 17q21 risk allele. Increased mucosal GSDMB expression is associated with a cell-lytic immune response coupled with compromised airway immunocompetence. These findings suggest that GSDMB-related airway cell death and perturbations in the mucosal IFN signature account for the increased vulnerability of 17q21 risk allele carriers to respiratory viral infections during early life, opening new options for future biological interventions.The All-Age-Asthma (ALLIANCE) cohort is registered at www.clinicaltrials.gov (pediatric arm, NCT02496468).
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Affiliation(s)
- Constanze A Jakwerth
- Center of Allergy and Environment (ZAUM), Technical University and Helmholtz Center Munich, Munich, Germany
- Member of the German Center for Lung Research (DZL), Germany
| | - Markus Weckmann
- Member of the German Center for Lung Research (DZL), Germany
- Division of Epigenetics in Chronic Lung Disease, Priority Area Chronic Lung Diseases, Research Center Borstel-Leibniz Lung Center, Borstel, Germany
- Department of Pediatric Pneumology and Allergology, University Medical Center Schleswig-Holstein, Lübeck, Germany
- Airway Research Center North, Borstel, Lübeck, Kiel, Grosshansdorf, Germany
| | - Sabina Illi
- Member of the German Center for Lung Research (DZL), Germany
- Institute for Asthma and Allergy Prevention, Helmholtz Center Munich, German Research Center for Environmental Health, Munich, Germany
- Comprehensive Pneumology Center-Munich, Munich, Germany
| | - Helen Charles
- Center of Allergy and Environment (ZAUM), Technical University and Helmholtz Center Munich, Munich, Germany
- Member of the German Center for Lung Research (DZL), Germany
| | - Ulrich M Zissler
- Center of Allergy and Environment (ZAUM), Technical University and Helmholtz Center Munich, Munich, Germany
- Member of the German Center for Lung Research (DZL), Germany
| | - Madlen Oelsner
- Center of Allergy and Environment (ZAUM), Technical University and Helmholtz Center Munich, Munich, Germany
- Member of the German Center for Lung Research (DZL), Germany
| | - Ferdinand Guerth
- Center of Allergy and Environment (ZAUM), Technical University and Helmholtz Center Munich, Munich, Germany
- Member of the German Center for Lung Research (DZL), Germany
| | - Jimmy Omony
- Member of the German Center for Lung Research (DZL), Germany
- Institute for Asthma and Allergy Prevention, Helmholtz Center Munich, German Research Center for Environmental Health, Munich, Germany
- Comprehensive Pneumology Center-Munich, Munich, Germany
| | - Sai Sneha Priya Nemani
- Member of the German Center for Lung Research (DZL), Germany
- Department of Pediatric Pneumology and Allergology, University Medical Center Schleswig-Holstein, Lübeck, Germany
- Airway Research Center North, Borstel, Lübeck, Kiel, Grosshansdorf, Germany
| | - Ruth Grychtol
- Member of the German Center for Lung Research (DZL), Germany
- Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, Hanover, Germany
- Biomedical Research in Endstage and Obstructive Lung Disease Hannover, Hanover, Germany
| | - Anna-Maria Dittrich
- Member of the German Center for Lung Research (DZL), Germany
- Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, Hanover, Germany
- Biomedical Research in Endstage and Obstructive Lung Disease Hannover, Hanover, Germany
| | - Chrysanthi Skevaki
- Member of the German Center for Lung Research (DZL), Germany
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics and
| | - Svenja Foth
- Member of the German Center for Lung Research (DZL), Germany
- Universities of Giessen and Marburg Lung Center, Philipps University Marburg and University Children's Hospital Marburg, University of Marburg, Marburg, Germany
| | - Stefanie Weber
- Member of the German Center for Lung Research (DZL), Germany
- Universities of Giessen and Marburg Lung Center, Philipps University Marburg and University Children's Hospital Marburg, University of Marburg, Marburg, Germany
| | - Miguel A Alejandre Alcazar
- Member of the German Center for Lung Research (DZL), Germany
- Institute for Lung Health and Cardio-Pulmonary Institute, Universities of Giessen and Marburg Lung Center, Giessen, Germany
- Translational Experimental Pediatrics, Experimental Pulmonology, Department of Pediatrics
- Center for Molecular Medicine Cologne and Cologne Excellence Cluster on Stress Responses in Aging-associated Diseases, and
- Pediatric Pulmonology and Allergology, Department of Pediatrics, Faculty of Medicine, University of Cologne and University Hospital Cologne, Cologne, Germany; and
| | - Silke van Koningsbruggen-Rietschel
- Member of the German Center for Lung Research (DZL), Germany
- Pediatric Pulmonology and Allergology, Department of Pediatrics, Faculty of Medicine, University of Cologne and University Hospital Cologne, Cologne, Germany; and
| | - Robert Brock
- Member of the German Center for Lung Research (DZL), Germany
- Pediatric Pulmonology and Allergology, Department of Pediatrics, Faculty of Medicine, University of Cologne and University Hospital Cologne, Cologne, Germany; and
| | - Samira Blau
- Member of the German Center for Lung Research (DZL), Germany
- Pediatric Pulmonology and Allergology, Department of Pediatrics, Faculty of Medicine, University of Cologne and University Hospital Cologne, Cologne, Germany; and
| | - Gesine Hansen
- Member of the German Center for Lung Research (DZL), Germany
- Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, Hanover, Germany
- Biomedical Research in Endstage and Obstructive Lung Disease Hannover, Hanover, Germany
- Cluster of Excellence 2115 (RESIST), Hannover Medical School, Hanover, Germany
| | - Thomas Bahmer
- Member of the German Center for Lung Research (DZL), Germany
- Airway Research Center North, Borstel, Lübeck, Kiel, Grosshansdorf, Germany
- Internal Medicine Department I, University Hospital Schleswig-Holstein-Campus Kiel, Kiel, Germany
| | - Klaus F Rabe
- Member of the German Center for Lung Research (DZL), Germany
- Airway Research Center North, Borstel, Lübeck, Kiel, Grosshansdorf, Germany
- LungenClinic Grosshansdorf GmbH and Medical Clinics, Christian Albrechts University, Kiel, Germany
| | - Folke Brinkmann
- Member of the German Center for Lung Research (DZL), Germany
- Division of Epigenetics in Chronic Lung Disease, Priority Area Chronic Lung Diseases, Research Center Borstel-Leibniz Lung Center, Borstel, Germany
- Department of Pediatric Pneumology and Allergology, University Medical Center Schleswig-Holstein, Lübeck, Germany
- Airway Research Center North, Borstel, Lübeck, Kiel, Grosshansdorf, Germany
| | - Matthias Volkmar Kopp
- Department of Pediatric Pneumology and Allergology, University Medical Center Schleswig-Holstein, Lübeck, Germany
- Pediatric Respiratory Medicine, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Airway Research Center North, Borstel, Lübeck, Kiel, Grosshansdorf, Germany
| | - Adam M Chaker
- Center of Allergy and Environment (ZAUM), Technical University and Helmholtz Center Munich, Munich, Germany
- Department of Otorhinolaryngology and Head and Neck Surgery, Medical School, Technical University of Munich, Munich, Germany
| | - Bianca Schaub
- Member of the German Center for Lung Research (DZL), Germany
- Dr. von Hauner Children's Hospital, Ludwig Maximilians University, Munich, Germany
- Comprehensive Pneumology Center-Munich, Munich, Germany
| | - Erika von Mutius
- Member of the German Center for Lung Research (DZL), Germany
- Institute for Asthma and Allergy Prevention, Helmholtz Center Munich, German Research Center for Environmental Health, Munich, Germany
- Dr. von Hauner Children's Hospital, Ludwig Maximilians University, Munich, Germany
| | - Carsten B Schmidt-Weber
- Center of Allergy and Environment (ZAUM), Technical University and Helmholtz Center Munich, Munich, Germany
- Member of the German Center for Lung Research (DZL), Germany
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Gelli M, Sourrouille I, Smolenschi C, Combari P, Hollebecque A, Benhaim L, Peggy D, Faron M, Elias D, Goere D, Charles H, Boige V, Malka D, Ducreux M. 586P Bidirectional chemotherapy for initially unresectable malignant peritoneal mesothelioma: Proof of concept of a new conversion strategy? Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.700] [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] Open
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Rani PP, Charles H, Sudhakar Russell PS, Selvaraj KG, Mammen PM, Russell S, C Nair MK. Dysfunction among Families of Children with Intellectual Disability in India Using Systems Model: Prevalence, Pattern, and Severity of Impairment. Indian J Psychol Med 2018; 40:33-37. [PMID: 29403127 PMCID: PMC5795676 DOI: 10.4103/ijpsym.ijpsym_198_17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVES Family dysfunction is observed in families with children with intellectual disability (ID). We study the prevalence, pattern of dysfunction, and severity of impairment in these special families using Systems approach. METHODS Sixty-two special families (a child with ID) and 62 typical families (all children with typical development) were included in the present study. The presence of ID was confirmed and quantified with the Binet-Kamat Scale of intelligence or Gesell's Developmental Schedule and Vineland Social Maturity Scales among the special families. In the typical families, brief ID scale was used to rule out ID. Prevalence, pattern, and severity of family dysfunction were assessed using Family Apgar Scale, Chicago Youth Development Study Family Assessment Scale and Global Assessment of Relational Functioning Scale, respectively. Appropriate bivariate analyses were used. RESULTS About 53% of special families and 19% of typical families had family dysfunction. About 21% of special families and 71% of typical families had the satisfactory relational unit. Areas of adaptability, partnership, growth, affection, resolve, beliefs about family, beliefs about development, beliefs about purpose, cohesion, deviant beliefs, support, organization, and communication were significantly different between special and typical families. The functional impairment was significantly more in the special families. CONCLUSION Family dysfunction is more prevalent among special families in India using systems approach. These families should be screened for dysfunction, and family therapy be prescribed when required.
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Affiliation(s)
- Pastin Pushpa Rani
- Department of Psychiatric Nursing, College of Nursing, Christian Medical College, Vellore, Tamil Nadu, India
| | - Helen Charles
- Department of Psychiatric Nursing, College of Nursing, Christian Medical College, Vellore, Tamil Nadu, India
| | | | - K G Selvaraj
- Department of Biostatistics, Christian Medical College, Vellore, Tamil Nadu, India
| | - Priya Mary Mammen
- Department of Psychiatry, Child and Adolescent Psychiatry Unit, Christian Medical College, Vellore, Tamil Nadu, India
| | - Sushila Russell
- Department of Psychiatry, Child and Adolescent Psychiatry Unit, Christian Medical College, Vellore, Tamil Nadu, India
| | - Muttathu K C Nair
- Child Development Centre, Thiruvananthapuram Medical College, Thiruvananthapuram, Kerala, India
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Wu S, Deipolyi A, Farquharson S, Park J, Sigal S, Tobias H, Teperman L, Charles H. Left-to-left TIPS. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.564] [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] Open
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Haber Z, Charles H, Gross J, Deipolyi A. Percutaneous radiologically guided gastrostomy tube placement: comparison of antegrade trans-oral and retrograde trans-abdominal approaches. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.116] [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] Open
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Neill M, Charles H, Aaltonen E, Deipolyi A. Inferior vena cava filter placement in the fluoroscopy suite and the operating room: cost, efficacy, and safety. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Haber Z, Charles H, Weisstuch J, Deipolyi A. Predictors of contrast-induced nephropathy in patients undergoing conventional angiography for acute hemorrhage. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.389] [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] Open
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Keim JP, Charles H, Alomar D. Prediction of crude protein and neutral detergent fibre concentration in residues of in situ ruminal degradation of pasture samples by near-infrared spectroscopy (NIRS). Anim Prod Sci 2016. [DOI: 10.1071/an14822] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
An important constraint of in situ degradability studies is the need to analyse a high number of samples and often with insufficient amount of residue, especially after the longer incubations of high-quality forages, that impede the study of more than one nutritional component. Near-infrared spectroscopy (NIRS) has been established as a reliable method for predicting composition of many entities, including forages and other animal feedstuffs. The objective of this work was to evaluate the potential of NIRS for predicting the crude protein (CP) and neutral detergent fibre (NDF) concentration in rumen incubation residues of permanent and sown temperate pastures in a vegetative stage. In situ residues (n = 236) from four swards were scanned for their visible-NIR spectra and analysed for CP and NDF. Selected equations developed by partial least-squares multivariate regression presented high coefficients of determination (CP = 0.99, NDF = 0.95) and low standard errors (CP = 4.17 g/kg, NDF = 7.91 g/kg) in cross-validation. These errors compare favourably to the average concentrations of CP and NDF (146.5 and 711.2 g/kg, respectively) and represent a low fraction of their standard deviation (CP = 38.2 g/kg, NDF = 34.4 g/kg). An external validation was not as successful, with R2 of 0.83 and 0.82 and a standard error of prediction of 14.8 and 15.2 g/kg, for CP and NDF, respectively. It is concluded that NIRS has the potential to predict CP and NDF of in situ incubation residues of leafy pastures typical of humid temperate zones, but more robust calibrations should be developed.
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Whitaker J, Williams A, Pope D, Elwell R, Thomas M, Charles H, Muldoon J. Clinical audit of a lymphoedema bandaging system: a foam roll and cohesive short stretch bandages. J Wound Care 2015; 24:83-4; 86-90; 92-4. [PMID: 25764952 DOI: 10.12968/jowc.2015.24.3.83] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Late-stage lymphoedema is characterised by chronic swelling, shape distortion, inflammatory processes and tissue fibrosis. Our aim was to perform a clinical audit of a lymphoedema compression bandaging system (Rosidal Soft foam roll layer and figure-of-eight application of Actico cohesive inelastic bandages) specifically designed for patients with late stage lower limb lymphoedema. METHOD The audit explored suitability of the bandaging system, benchmarking limb volume changes with research evidence, and reporting patient and practitioner evaluations. RESULTS A mean reduction (33%) in excess limb volume was reported for the 11 patients with unilateral lymphoedema who completed a course of bandaging over 12 days. Mean percentage reduction of absolute limb volume after treatment was 8%. Patient and practitioner evaluations indicated the suitability of this bandage system for patients with late stage lymphoedema in terms of comfort and effectiveness. CONCLUSION The bandaging system is suitable for patients with late stage chronic swelling. Two parameters for calculating change in limb volume are not interchangeable. Future evaluation of the bandaging system, using validated outcome measures within a comprehensive research study is required. DECLARATION OF INTEREST Activa Healthcare provided financial support to the project and supplied the materials.
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Affiliation(s)
- J Whitaker
- Director, Northern Lymphology Limited/Senior Lecturer, University of Central Lancashire
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Abstract
BACKGROUND Arthroscopic subacromial decompression (acromioplasty) is widely held to be effective, although pain may persist after the procedure. The objective of this study was to evaluate the proportion of patients with residual pain (i.e., the failure rate) after isolated subacromial decompression and to look for predictors of failure. MATERIAL AND METHOD We conducted a retrospective multicentre study of 108 patients managed with isolated arthroscopic subacromial decompression between 2007 and 2011, for any reason. We excluded patients in whom surgical procedures on the rotator cuff tendons were performed concomitantly. Data were collected from the medical records, a telephone questionnaire, and radiographs obtained before surgery and at last follow-up. Failure was defined as persistent pain (visual analogue scale score>3) more than 6 months after surgery and at last follow-up. RESULTS The failure rate was 29% (31/108). Two factors significantly predicted failure, namely, receiving workers' compensation benefits for the shoulder condition and co-planing. Heterogeneous calcific tendinopathy and deep partial-thickness rotator cuff tears were also associated with poorer outcomes, but the effect was not statistically significant. DISCUSSION Co-planing may predict failure of subacromial decompression, although whether this effect is due to an insufficient degree of co-planing or to the technique itself is unclear. Nevertheless, in patients with symptoms from the acromio-clavicular joint, acromio-clavicular resection is probably the best option. Receiving workers' compensation benefits was also associated with treatment failure, as a result of well-known parameters related to the social welfare system. CONCLUSION Isolated arthroscopic subacromial decompression is effective in 70% of cases. We recommend the utmost caution if co-planing is considered and/or the patient receives workers' compensation benefits for the shoulder condition, as these two factors are associated with a significant increase in the failure rate. LEVEL OF EVIDENCE IV (retrospective study).
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Affiliation(s)
- A Bouchard
- Hôpital d'Instruction des Armées Bégin Saint-Mandé, 69, avenue de Paris, 94160 Saint-Mandé, France.
| | - J Garret
- Clinique du Parc, 69000 Lyon, France
| | - L Favard
- Hôpital Trousseau, CHU de Tours, 37000 Tours, France
| | - H Charles
- 13, place Philippe Lebon, 59000 Lille, France
| | - D Ollat
- Hôpital d'Instruction des Armées Bégin Saint-Mandé, 69, avenue de Paris, 94160 Saint-Mandé, France
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Abstract
BACKGROUND AND AIMS There is a dearth of data on the predictors of insight in schizophrenia. This study attempted to assess the predictors of insight in a cohort of first-episode schizophrenia followed up over 5 years. METHODS Patients diagnosed to have Diagnostic and statistical manual of mental disorders (4th ed.; DSM-IV) schizophrenia (n = 131) were assessed prospectively for insight, psychopathology and explanatory models of illness over a 5-year period using standard instruments. Multiple linear regression and generalized estimating equations (GEE) were employed to assess predictors of insight. RESULTS We could follow up 95 (72.5%) patients, 5 years after recruitment. A total of 65 of these patients interviewed at 60 months (68.4%) achieved remission. Cross-sectional evaluations suggest a relationship between insight, psychosis rating and explanatory models of illness with good insight and medical models associated with good outcome. However, baseline and early illness data do not predict insight scores at 5 years. Serial longitudinal assessment of insight is negatively associated with Brief Psychiatric Rating Scale (BPRS) scores and positively associated with the number of nonmedical explanatory models of illness held by patients. CONCLUSION These findings argue that insight and explanatory models of illness are secondary to psychopathology, course and outcome. They are dependent on the trajectory of the person's illness, are not independent of the condition and call for multifaceted understanding of the issues.
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Affiliation(s)
- Shanthi Johnson
- Department of Psychiatric Nursing College of Nursing, Christian Medical College, Vellore, India
| | | | - Helen Charles
- Department of Psychiatric Nursing College of Nursing, Christian Medical College, Vellore, India
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Johnson S, Sathyaseelan M, Charles H, Jacob KS. Predictors of disability: a 5-year cohort study of first-episode schizophrenia. Asian J Psychiatr 2014; 9:45-50. [PMID: 24813036 DOI: 10.1016/j.ajp.2014.01.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [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: 09/09/2013] [Revised: 01/02/2014] [Accepted: 01/08/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND There is a dearth of information about the predictors of disability in schizophrenia from low and middle-income countries. This study attempted to investigate the impact of socio-demographic and clinical variables on disability in a cohort of first episode schizophrenia. METHOD Patients diagnosed to have DSM IV schizophrenia (n=131) were assessed prospectively for psychopathology, functioning, insight and explanatory models of illness at baseline, 6, 12 and 60 months using standard instruments. Disability was assessed at 5 years. Multiple linear regression was employed to adjust for common confounders. RESULTS We could follow-up 95 (72.5%) patients. Sixty-five of these patients (68.4%) achieved remission. Disability scores at 5 years were associated negatively with episodic nature of illness at baseline, functional assessments at 6 and 12 months and return to pre-morbid level function. Disability correlated positively with psychopathology at 6 and 12 months and time spent in psychotic episodes. It was also associated with psychopathology, remission, insight and patient perspectives at the 5th year cross-sectional evaluation. While employment status at recruitment was not associated with disability, it was associated with unemployment at follow-up. CONCLUSIONS Disability at 5 years was associated with illness variables - episodic nature of illness at baseline, psychopathology and functioning, duration in psychotic episode and return to pre-morbid function. Patient perspectives about their illness (insight and patient explanatory models) were only associated cross-sectionally at 60 months but not earlier and are more suggestive of a coping response rather than being predictive of outcome. The relationship between unemployment and disability suggests that they are products of the same disease process.
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Affiliation(s)
- Shanthi Johnson
- College of Nursing, Christian Medical College, Vellore 632004, India
| | | | - Helen Charles
- College of Nursing, Christian Medical College, Vellore 632004, India
| | - K S Jacob
- Christian Medical College, Vellore 632002, India.
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Abstract
OBJECTIVE To evaluate the role of compression in non-healing venous leg ulcers (VLUs) of > 3 months' duration. METHOD Patients' records from three independent data sets of non-healing VLUs of > 3 months'duration were re-analysed.Two data sets were separate audits of clinical practice and the third comprised patients' records from a randomised controlled trial. Some patients in each data set were never treated with compression. The effect of compression on healing at 6 months was tested with logistic regression. RESULTS In each data set, patients in the compression and no-compression groups were matched according to ulcer size and duration; there were no differences in comorbidities. Comparing the no-compression with the compression groups, the healing rate at 6 months was 68% vs 48% in study 1, 12% vs 6% in study 2, and 26% vs 11% in study 3. Use of compression was found to be an independent predictor of not healing with an odds ratio of 0.422, 0.456 and 0.408 in studies 1, 2 and 3 respectively. CONCLUSION The healing rate of non-healing VLUs of > 3 months' duration in the no-compression groups was double that of VLUs in the compression groups. These findings have the potential for treatment modification if confirmed in a prospective trial. DECLARATION OF INTEREST There were no external sources of funding for this study. The authors have no conflicts of interest that are directly relevant to the content of this manuscript, which remains their sole responsibility.
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Charles H, Groenwald M. Comorbid medical conditions in women undergoing uterine artery embolization for symptomatic uterine fibroids and adenomyosis. J Vasc Interv Radiol 2013. [DOI: 10.1016/j.jvir.2013.01.381] [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: 10/27/2022] Open
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Trouilloud P, Gonzalvez M, Martz P, Charles H, Handelberg F, Nyffeler RW, Baulot E. Duocentric® reversed shoulder prosthesis and Personal Fit® templates: innovative strategies to optimize prosthesis positioning and prevent scapular notching. Eur J Orthop Surg Traumatol 2013; 24:483-95. [PMID: 23543043 DOI: 10.1007/s00590-013-1213-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Accepted: 03/13/2013] [Indexed: 12/13/2022]
Abstract
We describe our experience with a new system of patient-specific template called Personal Fit(®), which is unique in shoulder surgery and used in combination with Duocentric(®) prosthesis. The reverse prosthesis's concept is the invention of Paul Grammont, developed with Grammont's team of Dijon University as from 1981, which led to the first reversed total shoulder prosthesis called Trumpet in 1985. The Duocentric(®) prosthesis developed in 2001 is the third-generation prosthesis, coming from the Trumpet and the second-generation prosthesis Delta(®) (DePuy). This prosthesis provides a novel solution to the notching problem with an inferior overhang integrated onto the glenoid baseplate. Personal Fit(®) system is based on reconstructing the shoulder joint bones in three dimensions using CT scan data, placing a landmark on the scapula and locating points on the glenoid and humerus. That will be used as a reference for the patient-specific templates. We study the glenoid position planned with Personal Fit(®) software relative to native glenoid position in 30 cases. On average, the difference between the planned retroversion (or anteversion in one case) and native retroversion was 8.6°.
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Affiliation(s)
- P Trouilloud
- Anatomy Laboratory, Faculty of Medicine, BP 87900, 21079, Dijon Cedex, France,
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Johnson S, Sathyaseelan M, Charles H, Jeyaseelan V, Jacob KS. Insight, psychopathology, explanatory models and outcome of schizophrenia in India: a prospective 5-year cohort study. BMC Psychiatry 2012; 12:159. [PMID: 23013057 PMCID: PMC3514157 DOI: 10.1186/1471-244x-12-159] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Accepted: 09/03/2012] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The sole focus of models of insight on bio-medical perspectives to the complete exclusion of local, non-medical and cultural constructs mandates review. This study attempted to investigate the impact of insight, psychopathology, explanatory models of illness on outcome of first episode schizophrenia. METHOD Patients diagnosed to have DSM IV schizophrenia (n = 131) were assessed prospectively for insight, psychopathology, explanatory models of illness at baseline, 6, 12 and 60 months using standard instruments. Multiple linear and logistic regression and generalized estimating equations (GEE) were employed to assess predictors of outcome. RESULTS We could follow up 95 (72.5%) patients. Sixty-five of these patients (68.4%) achieved remission. There was a negative relationship between psychosis rating and insight scores. Urban residence, fluctuating course of the initial illness, and improvement in global functioning at 6 months and lower psychosis rating at 12 months were significantly related to remission at 5 years. Insight scores, number of non-medical explanatory models and individual explanatory models held during the later course of the illness were significantly associated with outcome. Analysis of longitudinal data using GEE showed that women, rural residence, insight scores and number of non-medical explanatory models of illness held were significantly associated with BPRS scores during the study period. CONCLUSIONS Insight, the disease model and the number of non-medical model positively correlated with improvement in psychosis arguing for a complex interaction between the culture, context and illness variables. These finding argue that insight and explanatory models are secondary to psychopathology, course and outcome of the illness. The awareness of mental illness is a narrative act in which people make personal sense of the many challenges they face. The course and outcome of the illness, cultural context, acceptable cultural explanations and the prevalent social stigma interact to produce a complex and multifaceted understanding of the issues. This complexity calls for a nuanced framing of insight.
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Affiliation(s)
- Shanthi Johnson
- College of Nursing, Christian Medical College, Vellore, 632004, India
| | | | - Helen Charles
- College of Nursing, Christian Medical College, Vellore, 632004, India
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Charles H, Song C, Kovacs S, Babb J, Gross J, Aquino T. Abstract No. 81: Objective non-angiographic endpoint of uterine artery embolization as defined by parametric uterine artery blood pressure differences. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.120] [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] Open
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Savarimuthu RJS, Ezhilarasu P, Charles H, Antonisamy B, Kurian S, Jacob KS. Post-partum depression in the community: a qualitative study from rural South India. Int J Soc Psychiatry 2010; 56:94-102. [PMID: 19906768 DOI: 10.1177/0020764008097756] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [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: 12/22/2022]
Abstract
BACKGROUND Post-partum depression, although heterogeneous, is often considered a medical disease when viewed from the biomedical perspective. However, recent reports from the Indian subcontinent have documented psychosocial causal factors. METHOD This study employed qualitative methodology in a representative sample of women in rural South India. Women in the post-partum period were assessed using the Tamil versions of the Short Explanatory Model Interview, the Edinburgh Postnatal Depression Scale and a semi-structured interview to diagnose ICD 10 depression. Socio-demographic and clinical details were also recorded. RESULTS Some 137 women were recruited and assessed, of these, 26.3% were diagnosed to have post-partum depression. The following factors were associated with post-partum depression after adjusting for age and education: age less than 20 or over 30 years, schooling less than five years, thoughts of aborting current pregnancy, unhappy marriage, physical abuse during current pregnancy and after childbirth, husband's use of alcohol, girl child delivered in the absence of living boys and a preference for a boy, low birth weight, and a family history of depression. Post-partum depression was also associated with an increased number of causal models of illness, a number of non-medical models, treatment models and non-medical treatment models. CONCLUSION Many social and cultural factors have a major impact on post-partum depression. Post-partum depression, when viewed from a biomedical framework, fails to acknowledge the role of context in the production of emotional distress in the post-partum period.
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Affiliation(s)
- R J S Savarimuthu
- Department of Psychiatric Nursing, College of Nursing, Christian Medical College, Vellore, India
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Clark T, Do R, Kang S, Charles H, Hecht E. Abstract No. 86: Can Functional MRI Predict Volume Reduction Following Uterine Fibroid Embolization? J Vasc Interv Radiol 2009. [DOI: 10.1016/j.jvir.2008.12.076] [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] Open
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Mondshine R, Charles H, Aquino T, Clark T. Abstract No. 145: Radiation Dose of Uterine Fibroid Embolization Using a Flat Panel Digital Subtraction Angiography System. J Vasc Interv Radiol 2008. [DOI: 10.1016/j.jvir.2007.12.161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Abstract
BACKGROUND Stigma associated with mental illness affects patients and their families. Diverse beliefs about the cause and treatment of schizophrenia are common among patients and their relatives. AIM To study the association between stigma and beliefs about illness in patients and their relatives. METHOD Standard instruments were used to assess beliefs about illness and about stigma among patients with schizophrenia and relatives in Vellore, south India. RESULTS The majority of the patients and their relatives simultaneously held multiple and contradictory models of illness and its treatment. Stigma among patients with schizophrenia and their relatives is associated with specific beliefs about causes of mental illness. CONCLUSIONS Beliefs may play a role in mitigating or may aggravate the effects of stigma. The cross-sectional study design precludes definitive conclusions on direction of the causal association.
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Affiliation(s)
- Helen Charles
- College of Nursing, Christian Medical College, Vellore, India
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Manoranjitham S, Charles H, Saravanan B, Jayakaran R, Abraham S, Jacob KS. Perceptions about suicide: a qualitative study from southern India. Natl Med J India 2007; 20:176-179. [PMID: 18085122] [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: 05/25/2023]
Abstract
BACKGROUND Studies from India have reported high rates of suicide. We aimed to understand the social and cultural factors that modulate the risks related to suicide. METHODS Focus group discussions were conducted with community health workers (1 group) and members of the public (6 groups). In-depth interviews were also conducted with 5 people who had attempted suicide and survived. The interviews were tape-recorded and transcribed verbatim. The results were summarized and analysed using standard procedures. RESULTS The most common causes for suicide were interpersonal and family problems, and financial difficulties. Mental illness was also reported as causal. All 5 subjects who had attempted suicide mentioned marital and family discord as the cause. The majority of the general population and all the subjects who had attempted suicide were not aware of any community and support services for the prevention of suicide. CONCLUSION Our study reveals that people perceived suicide as an option to overcome interpersonal, family and financial stress among normal individuals as well as those with mental illness. Healthcare providers should place greater emphasis on educating the general public regarding the policies and services available for suicide prevention.
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Bermingham J, Charles H, Calevero F, Wilkinson T. Comparative analysis of gene expression in an aphid–Buchnera symbiosis: The role of Buchnera in the nutrition of aphid embryos. Comp Biochem Physiol A Mol Integr Physiol 2007. [DOI: 10.1016/j.cbpa.2007.01.488] [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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Charles H, Labrique JF, Monnin C, Oweida H. [Not Available]. Rev Chir Orthop Reparatrice Appar Mot 2005; 91:68. [PMID: 16609584 DOI: 10.1016/s0035-1040(05)84539-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
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Abstract
OBJECTIVE To investigate the impact of 'disease' and treatment on quality of life in patients with venous leg ulceration. METHOD Sixty-five patients with venous leg ulcers were recruited and treated. At study entry and exit or following complete wound closure, whichever occurred first, each patient was assessed using the SF-36 quality-of-life questionnaire. Data analysis included an investigation of the study population as whole, differences between patients whose ulcers did and did not heal and between gender and age. Health domain means for all patients were compared with age equivalent norms (AENs) at both entry and exit. RESULTS There was a significant improvement in the SF-36 domains of bodily pain, health transition, mental health and social functioning for all 65 patients. Patients whose ulcers healed also showed a statistically significant improvement in the vitality domain. Patients whose ulcers did not heal had statistically significant improved scores for bodily pain and health transition. At entry all SF-36 values, except for general health, were lower than the AENs. On exit, scores for bodily pain, general health and mental health were comparable with the AEN; values for the remaining five domains increased at exit. CONCLUSION The results highlight that good wound management and effective compression therapy can improve quality of life in patients with venous leg ulceration, whether or not the patient's leg ulcer healed following treatment.
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Affiliation(s)
- H Charles
- St Charles Hospital, Exmoor Street, London W10 6DZ
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Abstract
Six patients had their wounds dressed with 3M Foam Dressing, a highly absorbent polyurethane foam covered with a breathable layer, for up to four weeks. The dressing was assessed for its effect on the wound and patient comfort, with promising results.
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Charles H, John T, Chandy S, Ezhilarasu P, Antonisamy B, Jacob K. Validation of the Routine Assessment of Patient Progress (RAPP) in patients with psychosis in South India. Int J Methods Psychiatr Res 2003; 12:157-64. [PMID: 12953143 PMCID: PMC6878326 DOI: 10.1002/mpr.152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The aim of the study was to validate the Routine Assessment of Patient Progress (RAPP), an instrument for assessment by nurses, among patients with psychosis in South India. One hundred consecutive patients with psychosis admitted to the Department of Psychiatry, Christian Medical College, Vellore, India, were assessed on day five and day 19 using the RAPP, the PANSS, and the CGI scales. The correlation of the RAPP with the other scales, its change over time, the inter-rater reliability, and factor structure were assessed. The subscales of RAPP correlated significantly with those of the other scales at intake and at follow-up. The RAPP scores changed significantly after treatment. Its inter-rater reliability as measured by the intra-class correlation coefficient was 0.98. The Cronbach's alpha, used to measure the internal consistency of the scale, was 0.87. The split-half reliability (Spearman-Brown) was 0.89. Principal component analysis with varimax rotation revealed six factors, which explained 67.4% of the variance. Items related to life skills explained a major proportion of the variance. The good psychometric properties, concurrent validity, high inter-rater reliability and sensitivity to change make it a useful instrument for nurses to employ to assess patients with psychoses.
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Affiliation(s)
- H. Charles
- College of Nursing, Christian Medical College, Vellore, India
| | - T. John
- Department of Psychiatry, Christian Medical College, Vellore, India
| | - S. Chandy
- College of Nursing, Christian Medical College, Vellore, India
| | - P. Ezhilarasu
- College of Nursing, Christian Medical College, Vellore, India
| | - B. Antonisamy
- Department of Biostatistics, Christian Medical College, Vellore, India
| | - K.S. Jacob
- Department of Psychiatry, Christian Medical College, Vellore, India
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Abstract
In this article, we describe a randomised trial in which two established primary dressings - Comfeel (Coloplast, UK) and Granuflex improved formulation (Convatec, UK) - were compared to Cutinova foam (Beiersdorf Medical, UK) in the management of venous leg ulcers. Patients that met the study trial criteria were randomised to receive one of the three primary dressings. All ulcers were secondarily bandaged with Comprilan (Beiersdorf Medical, UK) short-stretch compression. The three dressings were compared in terms of their ability to promote ulcer healing (closure rate and healing rate) and reduce the prevalence and severity of ulcer-associated pain, over a 12-week period. The ease with which dressings could be used in a busy outpatient clinic setting was also considered. On enrollment, groups were well matched in terms of all of the patient and ulcer parameters studies. Six patients were withdrawn for reasons unrelated to study dressings or trial procedures. Following non-parametric analysis of the study data, the three dressings were found to be equally effective at promoting ulcer healing and alleviating ulcer-associated pain. Study personnel rated Cutinova Foam as easy, if not easier, to use than Comfeel or Granuflex. This study suggests that Cutinova Foam is as safe and effective as both Comfeel and Granuflex, in the treatment of venous leg ulcers.
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Charles H. Using compression bandages in the treatment of venous leg ulceration. Prof Nurse 2001; 17:123-5. [PMID: 12030063] [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: 02/25/2023]
Abstract
Community nurses may be required to bandage venous leg ulcers and there are a number of methods of doing so. This article will review evidence of the benefits of using short-stretch bandages and various techniques that have been developed for applying them, which have resulted in improved levels of healing.
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Affiliation(s)
- H Charles
- St Charles Family Health Centre, London
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Ballard K, Charles H. Ultrasound therapy. Nurs Times 2001; 97:58-9. [PMID: 11954490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Affiliation(s)
- K Ballard
- Tissue Viability Unit, Guy's Hospital, London
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Abstract
Eukaryotic cells, as genetic entities, most often involve several physically associated genomes that direct the metabolic cell equilibrium. In the coleopteran insects of the genus Sitophilus, in addition to the nucleus and the mitochondrial genomes, two other intracellular bacterial genomes belonging to the alpha and the gamma groups of Proteobacteria are also present. Coexisting with the eukaryotic host cell genomes, they intervene in the physiology and reproduction of the host. They are both transmitted vertically to the progeny and exhibit different levels of symbiont integration in insects. Their coexistence within a eukaryotic cell system illustrates the genetic complexity of animal tissue and questions the concept of the 'biological individual'.
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Affiliation(s)
- A Heddi
- UMR INRA/INSA de Lyon -- Biologie Fonctionnelle, Insectes et Interactions, Villeurbanne, France.
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Charles H, Heddi A, Rahbe Y. A putative insect intracellular endosymbiont stem clade, within the Enterobacteriaceae, infered from phylogenetic analysis based on a heterogeneous model of DNA evolution. C R Acad Sci III 2001; 324:489-94. [PMID: 11411291 DOI: 10.1016/s0764-4469(01)01328-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Insect intracellular symbiotic bacteria (intracellular endosymbionts, or endocytobionts) were positioned within the gamma 3-Proteobacteria using a non-homogeneous model of DNA evolution, allowing for rate variability among sites, for GC content heterogeneity among sequences, and applied to a maximum likelihood framework. Most of them were found to be closely related within the Enterobacteriaceae family, located between Proteus and Yersinia. These results suggest that such a bacterial group might possess several traits allowing for insect infection and the stable establishment of symbiotic relationships and that this could represent a stem clade for numerous insect endocytobionts. Based on the estimations of the equilibrium GC content and branch lengths in the phylogenetic tree, we have made comparisons of the relative ages of these different symbioses.
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Affiliation(s)
- H Charles
- UMR Inra/Insa de Lyon, Biologie fonctionnelle insectes et interactions, Insa, bât. Louis Pasteur, 69621 Villeurbanne, France.
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Abstract
A new hydropolymer dressing was compared with an alginate dressing in a multicentre, prospective, controlled, randomised, stratified, open label trial of 113 patients with exuding venous leg ulcers. The study aimed to evaluate the performance of the dressings in terms of their ability to handle exudate, patient and user acceptability and cost-effectiveness. Patients were stratified according to volume of wound exudate (moderate/heavy) and randomised to the hydropolymer dressing or the alginate plus a secondary dressing. A statistically significant difference between treatment groups was observed in mean wear time, with a longer wear time observed in the hydropolymer group (3.91 days) compared with the alginate group (3.09 days, p = 0.001). In terms of patient and user acceptability, all 10 overall evaluations made by both patient and investigator were markedly in favour of the hydropolymer dressing (p < 0.001 to p = 0.020). The use of the hydropolymer dressing for patients with moderate to heavily exuding venous leg ulcers has statistically significant advantages over the alginate dressing in terms of wear time and investigator and patient acceptability. It is anticipated that this reduction in dressing frequency will translate into a cost-effective wound treatment.
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Affiliation(s)
- H J Schulze
- Department of Dermatology, Institute for Tumours of the Skin, University of Münster, Germany
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Hsieh CM, Fukumoto S, Layne MD, Maemura K, Charles H, Patel A, Perrella MA, Lee ME. Striated muscle preferentially expressed genes alpha and beta are two serine/threonine protein kinases derived from the same gene as the aortic preferentially expressed gene-1. J Biol Chem 2000; 275:36966-73. [PMID: 10973969 DOI: 10.1074/jbc.m006028200] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Aortic preferentially expressed gene (APEG)-1 is a 1.4-kilobase pair (kb) mRNA expressed in vascular smooth muscle cells and is down-regulated by vascular injury. An APEG-1 5'-end cDNA probe identified three additional isoforms. The 9-kb striated preferentially expressed gene (SPEG)alpha and the 11-kb SPEGbeta were found in skeletal muscle and heart. The 4-kb brain preferentially expressed gene was detected in the brain and aorta. We report here cloning of the 11-kb SPEGbeta cDNA. SPEGbeta encodes a 355-kDa protein that contains two serine/threonine kinase domains and is homologous to proteins of the myosin light chain kinase family. At least one kinase domain is active and capable of autophosphorylation. In the genome, all four isoforms share the middle three of the five exons of APEG-1, and they differ from each other by using different 5'- and 3'-ends and alternative splicing. We show that the expression of SPEGalpha and SPEGbeta is developmentally regulated in the striated muscle during C2C12 myoblast to myotube differentiation in vitro and cardiomyocyte maturation in vivo. This developmental regulation suggests that both SPEGalpha and SPEGbeta can serve as sensitive markers for striated muscle differentiation and that they may be important for adult striated muscle function.
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Affiliation(s)
- C M Hsieh
- Cardiovascular and the Pulmonary and Critical Care Divisions, Brigham and Women's Hospital, and the Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
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Pintureau B, Chaudier S, Lassablière F, Charles H, Grenier S. Addition of wsp sequences to the Wolbachia phylogenetic tree and stability of the classification. J Mol Evol 2000; 51:374-7. [PMID: 11040288 DOI: 10.1007/s002390010099] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [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: 10/17/2022]
Abstract
Wolbachia are symbiotic bacteria altering reproductive characters of numerous arthropods. Their most recent phylogeny and classification are based on sequences of the wsp gene. We sequenced wsp gene from six Wolbachia strains infecting six Trichogramma species that live as egg parasitoids on many insects. This allows us to test the effect of the addition of sequences on the Wolbachia phylogeny and to check the classification of Wolbachia infecting Trichogramma. The six Wolbachia studied are classified in the B supergroup. They confirm the monophyletic structure of the B Wolbachia in Trichogramma but introduce small differences in the Wolbachia classification. Modifications include the definition of a new group, Sem, for Wolbachia of T. semblidis and the merging of the two closely related groups, Sib and Kay. Specific primers were determined and tested for the Sem group.
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Affiliation(s)
- B Pintureau
- Biologie Fonctionnelle, Insectes et Interactions-UMR INRA/INSA de Lyon, INSA Bâtiment 406, 69 621 Villeurbanne cedex, France
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Heddi A, Grenier AM, Khatchadourian C, Charles H, Nardon P. Four intracellular genomes direct weevil biology: nuclear, mitochondrial, principal endosymbiont, and Wolbachia. Proc Natl Acad Sci U S A 1999; 96:6814-9. [PMID: 10359795 PMCID: PMC21998 DOI: 10.1073/pnas.96.12.6814] [Citation(s) in RCA: 209] [Impact Index Per Article: 8.4] [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: 11/18/2022] Open
Abstract
Cell physiology in the weevil Sitophilus oryzae is coordinated by three integrated genomes: nuclear, mitochondrial, and the "S. oryzae principal endosymbiont" (SOPE). SOPE, a cytoplasmic bacterium (2 x 10(3) bacteria per specialized bacteriocyte cell and 3 x 10(6) bacteria per weevil) that belongs to the proteobacteria gamma3-subgroup, is present in all weevils studied. We discovered a fourth prokaryotic genome in somatic and germ tissues of 57% of weevil strains of three species, S. oryzae, Sitophilus zeamais, and Sitophilus granarius, distributed worldwide. We assigned this Gram-negative prokaryote to the Wolbachia group (alpha-proteobacteria), on the basis of 16S rDNA sequence and fluorescence in situ DNA-RNA hybridization (FISH). Both bacteria, SOPE and Wolbachia, were selectively eliminated by combined heat and antibiotic treatments. Study of bacteria involvement in this insect's genetics and physiology revealed that SOPE, which induces the specific differentiation of the bacteriocytes, increases mitochondrial oxidative phosphorylation through the supply of pantothenic acid and riboflavin. Elimination of this gamma3-proteobacterium impairs many physiological traits. By contrast, neither the presence nor the absence of Wolbachia significantly affects the weevil's physiology. Wolbachia, disseminated throughout the body cells, is in particularly high density in the germ cells, where it causes nucleocytoplasmic incompatibility. The coexistence of two distinct types of intracellular proteobacteria at different levels of symbiont integration in insects illustrates the genetic complexity of animal tissue. Furthermore, evolutionary timing can be inferred: first nucleocytoplasm, then mitochondria, then SOPE, and finally Wolbachia. Symbiogenesis, the genetic integration of long-term associated members of different species, in the weevil appears to be a mechanism of speciation (with Wolbachia) and provides a means for animals to acquire new genes that permit better adaptation to the environment (with SOPE).
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Affiliation(s)
- A Heddi
- Laboratoire de Biologie Appliquée, Institut National des Sciences Appliquées-Institut National de la Recherche Agronomique Unité Associée 203, France
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Abstract
A review of the benefits of short-stretch bandages and techniques that have been developed for their application.
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Affiliation(s)
- H Charles
- St Charles Family Health Centre, London, UK
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Abstract
The genome of Buchnera, an endosymbiotic bacterium of the pea aphid Acyrthosiphon pisum, was characterized by pulse-field gel electrophoresis (PFGE) as a circular DNA molecule of 657 kb. The enzymes I-CeuI, CpoI, ApaI, SmaI, NaeI, SacII, MluI, FspI, and NruI were used to cleave the DNA of Buchnera into fragments of suitable size for PFGE analysis. A physical map of the Buchnera genome, including restriction fragments from seven of these enzymes, was constructed using double cutting, partial digestion, and hybridization with linking fragments, and 29 genes and operons were localized on the map. In addition, the genomic map of Buchnera was compared with those of Escherichia coli and Haemophilus influenzae. The gene order in Buchnera is more similar to that of E. coli than to H. influenzae. The dramatic shrinkage of the Buchnera genome compared with those of other members of the closely related Enterobacteriaceae family is discussed in terms of evolution under the influence of the intracellular symbiotic association.
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Affiliation(s)
- H Charles
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, Hongo, Tokyo 113-0033, Japan
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Charles H, Callicott C, Mathurin D. Management of venous leg ulcers. J Wound Care 1998; 7:512-3. [PMID: 10188446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- H Charles
- St Charles Family Health Centre, London, UK
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Abstract
As part of an holistic and systematic assessment, the area of a leg ulcer can be a useful measurement for evaluating the wound repair process. The treatment of a chronic leg ulcer can, if not monitored, become a sequence of dressings and bandaging. Thus, a timely recognition of improvement or deterioration of the wound condition may be overlooked. Area change often depends upon the original size and pathology of the ulcer as well as the treatment method. Perhaps the most important factor which can be derived from area measurements is the rate of area change. Measurements taken at regular intervals give a good indication of a wound's healing progress. Computer technology can be used to assist in accurate area measurement. This information gives the clinician vital information on the treatment's efficacy and the data can be used for further statistical or case study analysis.
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Affiliation(s)
- H Charles
- St Charles Family Health Centre, London
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Heddi A, Charles H, Khatchadourian C, Bonnot G, Nardon P. Molecular characterization of the principal symbiotic bacteria of the weevil Sitophilus oryzae: a peculiar G + C content of an endocytobiotic DNA. J Mol Evol 1998; 47:52-61. [PMID: 9664696 DOI: 10.1007/pl00006362] [Citation(s) in RCA: 107] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The principal intracellular symbiotic bacteria of the cereal weevil Sitophilus oryzae were characterized using the sequence of the 16S rDNA gene (rrs gene) and G + C content analysis. Polymerase chain reaction amplification with universal eubacterial primers of the rrs gene showed a single expected sequence of 1,501 bp. Comparison of this sequence with the available database sequences placed the intracellular bacteria of S. oryzae as members of the Enterobacteriaceae family, closely related to the free-living bacteria, Erwinia herbicola and Escherichia coli, and the endocytobiotic bacteria of the tsetse fly and aphids. Moreover, by high-performance liquid chromatography, we measured the genomic G + C content of the S. oryzae principal endocytobiotes (SOPE) as 54%, while the known genomic G + C content of most intracellular bacteria is about 39.5%. Furthermore, based on the third codon position G + C content and the rrs gene G + C content, we demonstrated that most intracellular bacteria except SOPE are A + T biased irrespective of their phylogenetic position. Finally, using the hsp60 gene sequence, the codon usage of SOPE was compared with that of two phylogenetically closely related bacteria: E. coli, a free-living bacterium, and Buchnera aphidicola, the intracellular symbiotic bacteria of aphids. Taken together, these results show a peculiar and distinctly different DNA composition of SOPE with respect to the other obligate intracellular bacteria, and, combined with biological and biochemical data, they elucidate the evolution of symbiosis in S. oryzae.
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Affiliation(s)
- A Heddi
- Laboratoire de Biologie Appliquée, INSA 406 UA-INRA 203 SDI-CNRS 5128, Villeurbanne, France.
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Charles H, Heddi A, Guillaud J, Nardon C, Nardon P. A molecular aspect of symbiotic interactions between the weevil Sitophilus oryzae and its endosymbiotic bacteria: over-expression of a chaperonin. Biochem Biophys Res Commun 1997; 239:769-74. [PMID: 9367844 DOI: 10.1006/bbrc.1997.7552] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.4] [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: 02/05/2023]
Abstract
Specific proteins of symbiosis were analyzed by the comparison of two-dimensional electrophoresis protein patterns of symbiotic and aposymbiotic strains of the weevil Sitophilus oryzae. One protein was shown to be exclusively expressed in the aposymbiotic strain and three proteins, including a chaperonin, were characterized in the symbiotic strain pattern. The groE-like operon, encoding the two chaperonins groES and GroEL-like proteins of the endocytobiotes, was sequenced. It was found to be very similar to the groE operon of Escherichia coli (82% identity). In vitro and ex vivo experiments of protein labelling demonstrated that almost 40% of the endocytobiote protein synthesis ex vivo is focused on the GroEL-like protein. Finally, we showed by northern blotting that heat shock at 38 degrees C results in groEL mRNA accumulation inside the endocytobiotes. This work supports the hypothesis that chaperonins could have an essential physiological function in the maintenance of the symbiotic association.
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Affiliation(s)
- H Charles
- Laboratoire de Biologie Appliquée, INSA 406, UA-INRA 203, SDI-CNRS 5128, Villeurbanne, France
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Charles H. Developing a leg ulcer management programme. Prof Nurse 1996; 11:475-477. [PMID: 8700937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Compression therapy is an essential component in the treatment of venous leg ulcers. Comprehensive education and training and support of district nurses in leg ulcer management is essential.
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Charles H. The impact of leg ulcers on patients' quality of life. Prof Nurse 1995; 10:571-2, 574. [PMID: 7604055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The pain of leg ulceration can dominate patients' lives and can have serious psychological and social effects on patients' quality of life. A phenomenological approach was used in this study to obtain rich data on patients' experiences. A feeling of loss of control and lack of faith in the professionals treating the condition was found.
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Charles H, Ishikawa H, Nardon P. Presence of a protein specific of endocytobiosis (symbionin) in the weevil Sitophilus. C R Acad Sci III 1995; 318:35-41. [PMID: 7757802] [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: 01/27/2023]
Abstract
Chaperonins are ubiquitous proteins found in all prokaryotic and eukaryotic cells. They are overproduced in several parasitic bacteria and are implicated in at least 2 types of endocytobiosis: in amoebae and in aphids. This work puts in evidence that a protein named symbionin, which shows an immunological homology with the E. coli protein GroEL, is present in the symbiotic relationship of 3 species of Sitophilus (S. oryzae, S. granarius, and S. zeamais). This protein is neither found in the naturally asymbiotic specie S. linearis nor in the aposymbiotic strain of S. oryzae obtained in the laboratory. This symbionin is stored in a great quantity within endocytobiotes and its amino acid composition seems to corroborate its chaperonin resemblance rather than its possible function as one of the insect storage proteins already described in the literature.
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Affiliation(s)
- H Charles
- Laboratoire de biologie appliquée UA-INRA 227, Villeurbanne, France
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Charles H. Compression healing of venous ulcers. Nurs Times 1992; 88:52. [PMID: 1738675] [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: 12/28/2022]
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Subbaramaiah K, Charles H, Simms SA. Probing the role of cysteine residues in the CheR methyltransferase. J Biol Chem 1991; 266:19023-7. [PMID: 1918019] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The CheR methyltransferase catalyzes the transfer of methyl groups from S-adenosylmethionine to specific glutamyl residues in bacterial chemoreceptor proteins. Studies with sulfhydryl reagents such as p-chloromercuribenzoate, N-ethylmaleimide, and 5,5'-dithiobis(2-nitrobenzoate) suggest that a cysteine residue is required for enzyme activity. The nucleotide sequence of the cheR gene predicts a 288-amino acid protein with cysteine residues at positions 31 and 229. To ascertain the role of these cysteine residues in the structure and function of the enzyme, oligonucleotide-directed mutagenesis was used to change each cysteine to serine. Whereas the Cys229-Ser mutation had essentially no effect on transferase activity, the Cys31-Ser mutation caused an 80% decrease in enzyme activity. The double mutant in which both cysteines were replaced by serines also had markedly reduced transferase activity. Preincubation of the wild type or Cys229-Ser proteins with either S-adenosylmethionine or beta-mercaptoethanol protected it from inhibition by sulfhydryl reagents, whereas prior incubation with the second substrate, the Tar receptor, gave partial protection. From these studies, Cys31 appears to be necessary for enzyme activity, and it seems to be located in the vicinity of the active site.
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Affiliation(s)
- K Subbaramaiah
- City College, Department of Chemistry, New York, New York 10031
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