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Ramos TDA, Medeiros CCM, Figueiroa JN, de Carvalho DF, Gusmão TME, Alves JGB. Effects of exergaming on the microcirculation of adolescents with overweight or obesity-a clinical trial efficacy. Appl Physiol Nutr Metab 2023; 48:379-385. [PMID: 36919852 DOI: 10.1139/apnm-2022-0335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
To assess the effect of exergaming on the microcirculation function of adolescents with overweight or obesity, this non-randomized clinical trial efficacy was conducted with 61 adolescents aged between 10 and 16 years. The intervention group (n = 31) performed exergaming three times per week for 8 weeks. Both groups received guidelines for a healthy diet and staying physically active. Microcirculation was assessed using a laser Doppler flowmetry (LDF) at baseline and after intervention. Primary outcomes derived from LDF assessment included resting flow, maximum flow, maximum/resting flow ratio, area under hyperemia, and post-occlusive reactive hyperemia (PORH). Secondary outcomes were body mass index and systemic blood pressure. Unpaired Student's t test compared intergroup analyses, and paired Student's t test compared intragroup analyses. The significance was set at 5%. Statistical analysis intergroup and intragroup was done by fitting a two-way mixed effects model. Microcirculation was similar between groups. Maximum flow (109.0 ± 38.3 versus 124.6 ± 43.0, P = 0.022), area under hyperemia (1614 ± 472 versus. 1755 ± 461, P = 0.023), and PORH (2.18 ± 0.49 versus 2.01 ± 0.52, P = 0.031) were statistically different after intervention. Body mass index decreased in intervention (24.5 ± 3.8-24.1 ± 4.0 kg/m2, P = 0.002) and control (25.2 ± 3.2-25.1 ± 3.3 kg/m2, P = 0.031) groups. Systolic blood pressure decreased significantly in the intervention group (110 ± 10-106 ± 9 mm Hg; P = 0.041) but not diastolic blood pressure (66.0 ± 7-68.8 ± 8 mm Hg; P = 0.089). Exergaming for 8 weeks led to improvements in the microcirculation function in adolescents with overweighed or obesity. Clinical trials: NTC03532659.
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Affiliation(s)
- Thacira Dantas Almeida Ramos
- Instituto de Medicina Integral Prof. Fernando Figueira (IMIP), Department of Integral Medicine, Postgraduate Program in Integral Medicine, Recife, PE, Brazil.,UniFacisa, Departament of Medicine, Campina Grande, PB, Brazil
| | | | - José Natal Figueiroa
- Instituto de Medicina Integral Prof. Fernando Figueira (IMIP), Department of Integral Medicine, Postgraduate Program in Integral Medicine, Recife, PE, Brazil
| | | | - Tatianne Moura Estrela Gusmão
- Instituto de Medicina Integral Prof. Fernando Figueira (IMIP), Department of Integral Medicine, Postgraduate Program in Integral Medicine, Recife, PE, Brazil.,UniFacisa, Departament of Medicine, Campina Grande, PB, Brazil
| | - João Guilherme Bezerra Alves
- Instituto de Medicina Integral Prof. Fernando Figueira (IMIP), Department of Integral Medicine, Postgraduate Program in Integral Medicine, Recife, PE, Brazil
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2
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Effects of regular physical exercise on skin blood flow and cardiovascular risk factors in overweight and obese subjects. SCIENTIA MEDICA 2022. [DOI: 10.15448/1980-6108.2022.1.41980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Objective: it is well known that low omentin levels and reduced bioavailability of nitric oxide (NO) are outgrowth of obesity. Besides, in obese subjects, microvascular dysfunction can be an initial stage of cardiovascular diseases. This situation can be evaluated with skin laser–Doppler flowmetry (LDF).Methods: in this study we investigated the effects of 12 weeks moderate physical exercise on microvascular reactivity and plasma levels of omentin and NO in 25 overweight and obese subjects. Control group was composed of 28 sedentary participants who were neither obese nor overweight. Microvascular reactivity was handled by measurement of skin blood flow from the ring finger of the right hand with LDF, which is a non–invasive method for evaluation. With this method, it was aimed to examine the post–occlusive reactive hyperemia response of the patients. None of the participants in both groups have never followed a regular exercise schedule in their life span.Results: with regular exercise, there was a statistically significant decrease in glucose (p=0.008), cholesterol (p=0.05), and triglyceride (p=0.048) levels, while body mass index, high–density lipoprotein, and low–density lipoprotein levels did not change significantly in overweight/obese group. Also, the omentin level significantly increased (p=0.01), but NO level did not change significantly. Moreover, the amount of change in omentin and NO levels measured before and after the physical exercise were significantly correlated (r=0.57). Considering the microcirculation, rest flow (p=0.001) and peak flow value of LDF (p=0.001) increased after the physical exercise.Conclusion: our study shows that moderate physical exercise affects microvascular reactivity and plasma levels of omentin in overweight and obese subjects.
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Vinet A, Morrissey C, Perez-Martin A, Goncalves A, Raverdy C, Masson D, Gayrard S, Carrere M, Landrier JF, Amiot MJ. Effect of vitamin D supplementation on microvascular reactivity in obese adolescents: A randomized controlled trial. Nutr Metab Cardiovasc Dis 2021; 31:2474-2483. [PMID: 34090775 DOI: 10.1016/j.numecd.2021.04.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/28/2021] [Accepted: 04/30/2021] [Indexed: 01/12/2023]
Abstract
BACKGROUND AND AIM Childhood obesity is associated with vitamin D (VD) deficiency and vascular dysfunction. Considering evidence indicates that VD may improve vascular function, this study, for the first time, assessed the effect of VD supplementation on microvascular reactivity in obese adolescents (OA). METHODS AND RESULTS This randomized controlled trial included 26 OA, receiving fruit juice with (n = 13) or without VD (4000 IU/d; n = 13) over a 3-month lifestyle program, as well as 23 normal-weight adolescents (controls). The primary outcome was the pre-to-post-program change in microvascular reactivity determined by laser speckle contrast imaging with acetylcholine and sodium nitroprusside iontophoresis. Changes in 25 hydroxyvitamin D (25(OH)D), flow-mediated dilation (FMD), nitrate-mediated dilation (NMD), insulin resistance (HOMA-IR) and inflammatory markers (C-reactive protein [CRP]) were monitored. At inclusion, in comparison to controls, OA exhibited lower total and free 25(OH)D, impaired microvascular responses, and impaired FMD, but similar NMD. After the lifestyle program, total and free 25(OH)D increased in all OA, with a greater increase in those receiving VD supplements. HOMA-IR and CRP decreased in all OA. Neither FMD nor NMD were altered in either group. Endothelium-dependent microvascular reactivity only increased in the VD-supplemented group, reaching values comparable to that of controls. Similar results were found when analyzing only OA with a VD deficiency at baseline. CONCLUSION VD supplementation during a lifestyle program attenuated microvascular dysfunction in OA without altering macrovascular function. REGISTRATION NUMBER FOR CLINICAL TRIAL NCT02400151.
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Affiliation(s)
- Agnès Vinet
- LAPEC EA4278, Université d'Avignon, Avignon, France.
| | | | - Antonia Perez-Martin
- Service d'Exploration et Médecine Vasculaire, CHU de Nîmes, Université de Montpellier, France
| | | | - Cécile Raverdy
- Institut Saint Pierre, SSR Pédiatrique, Palavas-les-Flots, France
| | - Delphine Masson
- Institut Saint Pierre, SSR Pédiatrique, Palavas-les-Flots, France
| | | | - Myriam Carrere
- UMR MOISA, Univ Montpellier, CIRAD, CIHEAM-IAM, INRA, Montpellier SupAgro, Montpellier, France
| | | | - Marie-Josèphe Amiot
- UMR MOISA, Univ Montpellier, CIRAD, CIHEAM-IAM, INRA, Montpellier SupAgro, Montpellier, France
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Bendor CD, Bardugo A, Pinhas-Hamiel O, Afek A, Twig G. Cardiovascular morbidity, diabetes and cancer risk among children and adolescents with severe obesity. Cardiovasc Diabetol 2020; 19:79. [PMID: 32534575 PMCID: PMC7293793 DOI: 10.1186/s12933-020-01052-1] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 06/08/2020] [Indexed: 02/08/2023] Open
Abstract
Severe obesity among children and adolescents is a significant global public health concern. The prevalence has markedly increased over the last decades, becoming common in many countries. Overwhelming rates of obesity among youth have prompted efforts to identify an evidence-based immediate- and long-term cardiometabolic risk factor profile in childhood-onset severe obesity, and to highlight gaps that require further investigation. The PubMed database was systematically searched in accordance with PRISMA guidelines. The search yielded 831 results, of which 60 fulfilled stringent criteria and were summarized in this review. The definition of severe obesity was variable, with only one half the publications using the definition BMI > 120% of the 95th percentile. Point estimates of the prevalence of at least one cardiometabolic risk factor in children with severe obesity reportedly range from 67 to 86%. Cross-sectional studies indicate that children and adolescents with severe obesity are at greater risk than those with mild obesity for type 2 diabetes, hypertension, fatty liver disease and dyslipidemia, already at childhood and adolescence. Robust epidemiological data on the long-term risk and actual point estimates in adulthood are lacking for these diseases as well as for other diseases (coronary heart disease, stroke, chronic kidney disease and cancer). Recent longitudinal studies indicate an increased risk for cardiomyopathy, heart failure, cardiovascular mortality and all-cause mortality in adulthood for adolescents with severe obesity compared to those with mild obesity. Given the alarming increase in the prevalence of severe obesity, the persistence of adiposity from childhood to adulthood and the precarious course of young adults with chronic comorbidities, the economic and clinical services burden on the healthcare system is expected to rise.
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Affiliation(s)
- Cole D Bendor
- Department of Military Medicine, Hebrew University of Jerusalem, Faculty of Medicine, Jerusalem, Israel.,Academy and Research Division, Surgeon General Headquarters, Israel Defense Forces, Medical Corps, Ramat Gan, Israel
| | - Aya Bardugo
- Department of Military Medicine, Hebrew University of Jerusalem, Faculty of Medicine, Jerusalem, Israel.,Academy and Research Division, Surgeon General Headquarters, Israel Defense Forces, Medical Corps, Ramat Gan, Israel
| | - Orit Pinhas-Hamiel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Institute of Endocrinology, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel
| | - Arnon Afek
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Central Management, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel
| | - Gilad Twig
- Department of Military Medicine, Hebrew University of Jerusalem, Faculty of Medicine, Jerusalem, Israel. .,Academy and Research Division, Surgeon General Headquarters, Israel Defense Forces, Medical Corps, Ramat Gan, Israel. .,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel. .,Institute of Endocrinology, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel.
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Fusco E, Pesce M, Bianchi V, Randazzo E, Del Ry S, Peroni D, Rossi M, Federico G. Preclinical vascular alterations in obese adolescents detected by Laser-Doppler Flowmetry technique. Nutr Metab Cardiovasc Dis 2020; 30:306-312. [PMID: 31653517 DOI: 10.1016/j.numecd.2019.09.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 07/29/2019] [Accepted: 09/06/2019] [Indexed: 01/05/2023]
Abstract
BACKGROUND AND AIMS Childhood obesity promotes adverse changes in cardiovascular structure and function. This study evaluated whether alterations in skin microcirculation were already present in obese adolescents in a pre-clinical phase of cardiovascular disease. METHODS AND RESULTS After an overnight fasting 22 obese adolescents and 24 normal-weight controls of similar age and gender distribution underwent clinical and blood examination and assessment of microvascular function by using two non-invasive techniques such as Peripheral Artery Tonometry (PAT) and Laser-Doppler Flowmetry (LDF). As compared to normal weight subjects, obese children had higher blood pressure, were significantly more hyper-insulinemic and insulin resistant, showing significantly higher plasma total cholesterol, LDL cholesterol, triglycerides and alanine aminotransferase (ALT). LDF showed lower pre- and post-occlusion forearm skin perfusion (perfusion units/second (PU/sec); median [IQR]) in obese than in normal weight subjects (pre-occlusion: 1633.8 [1023.5] vs. 2281.1 [1344.2]; p = 0.015. Post-occlusion: 4811.3 [4068.9] vs. 7072.8 [7298.8]; p = 0.021), while PAT revealed similar values of reactive hyperemia index (RHI). In entire population, fat mass % (FM%) was an independent determinant of both pre-and post-occlusion skin perfusion. Finally, being obese was associated with a higher risk to have a reduction of both pre- and post-occlusion skin perfusion (OR = 5,82 and 9,27, respectively). CONCLUSION LDF showed very early, pre-clinical, vascular involvement in obese adolescents, characterized by impaired skin microcirculation, possibly reflecting a more diffuse microvascular dysfunction to other body tissues. Whether changing life style and improving weight may reverse such pre-clinical alterations remains to be established.
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Affiliation(s)
- Eleonora Fusco
- Unit of Pediatric Endocrinology and Diabetes, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Margherita Pesce
- Department of Clinical and Experimental Medicine, Pisa University, Pisa, Italy
| | - Vanessa Bianchi
- Unit of Pediatric Endocrinology and Diabetes, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Emioli Randazzo
- Unit of Pediatric Endocrinology and Diabetes, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Silvia Del Ry
- Laboratory of Biochemistry and Molecular Biology, Institute of Clinical Physiology, CNR, Pisa, Italy
| | - Diego Peroni
- Unit of Pediatric Endocrinology and Diabetes, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Marco Rossi
- Department of Clinical and Experimental Medicine, Pisa University, Pisa, Italy
| | - Giovanni Federico
- Unit of Pediatric Endocrinology and Diabetes, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy.
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Marcoccia A, Klein-Weigel PF, Gschwandtner ME, Wautrecht JC, Matuska J, Rother U, Houben AJHM. Microcirculatory assessment of vascular diseases. VASA 2020; 49:175-186. [PMID: 32040388 DOI: 10.1024/0301-1526/a000851] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The term "microcirculation" refers to the terminal vascular network of the body, which includes arterioles, capillaries, venules as well as initial lymphatic vessels. Additionally, it insinuates to their unique function in thermoregulation, fluid balance, maintenance of cellular exchange, and metabolism. Disturbances of microvascular function were identified to precede macrovascular involvement in the presence of cardiovascular risk factors and is the hallmark of terminal disease stages like critical limb or acral ischemia. Nevertheless, despite its obvious significance in vascular medicine assessment of microvascular function became increasingly neglected in the clinical institutions during the last decades and seems to play a subordinary role in medical education. We therefore provide an overview over relevant and clinically practicable methods to assess microcirculation in vascular medicine with critical estimations of their pros and cons and their perspectives in the future.
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Affiliation(s)
- Antonella Marcoccia
- Unità di Medicina Vascolare e Autoimmunità, CRIIS-Centro di riferimento interdisciplinare per la Sclerosi Sistemica, Rome, Italy
| | - Peter F Klein-Weigel
- Klinik für Angiologie, Zentrum für Innere Medizin II, Ernst von Bergmann Klinikum, Potsdam, Germany
| | - Michael E Gschwandtner
- Medizinische Universtiät Wien, Universitätsklinik für Innere Medizin II, Klinische Abteilung für Angiologie, Vienna, Austria
| | - Jean Claude Wautrecht
- Service de Pathologie Vasculaire, Hôpital ERASME, Université Libre de Bruxelle, Brussels, Belgium
| | - Jiri Matuska
- MATMED s.r.o., Private Angiology Facility, Hodonin, Czech Republic
| | - Ulrich Rother
- Gefäßchirurgische Abteilung, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Alfons J H M Houben
- Department of Internal Medicine, School for Cardiovascular Diseases CARIM; Maastricht University Medical Center+, Maastricht, The Netherlands
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Radman M, McGuire J, Zimmerman J. Childhood Obesity, Endothelial Cell Activation, and Critical Illness. Front Pediatr 2020; 8:441. [PMID: 32850554 PMCID: PMC7419464 DOI: 10.3389/fped.2020.00441] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 06/25/2020] [Indexed: 12/13/2022] Open
Abstract
Pediatric obesity is increasing in prevalence and is frequently an antecedent to adult obesity and adult obesity-associated morbidities such as atherosclerosis, type II diabetes, and chronic metabolic syndrome. Endothelial cell activation, one aspect of inflammation, is present in the early stages of atherosclerosis, often prior to the onset of symptoms. Endothelial activation is a pathological condition in which vasoconstricting, pro-thrombotic, and proliferative mediators predominate protective vasodilating, anti-thrombogenic, and anti-mitogenic mediators. Many studies report poor outcomes among obese children with systemic endothelial activation. Likewise, the link between childhood obesity and poor outcomes in critical illness is well-established. However, the link between obesity and severity of endothelial activation specifically in the setting of critical illness is largely unstudied. Although endothelial cell activation is believed to worsen disease in critically ill children, the nature and extent of this response is poorly understood due to the difficulty in measuring endothelial cell dysfunction and destruction. Based on the data available for the obese, asymptomatic population and the obese, critically ill population, the authors posit that obesity, and obesity-associated chronic inflammation, including oxidative stress and insulin resistance, may contribute to endothelial activation and associated worse outcomes among critically ill children. A research agenda to examine this hypothesis is suggested.
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Affiliation(s)
- Monique Radman
- Seattle Children's Hospital, Pediatric Critical Care, University of Washington, Seattle, WA, United States
| | - John McGuire
- Seattle Children's Hospital, Pediatric Critical Care, University of Washington, Seattle, WA, United States
| | - Jerry Zimmerman
- Seattle Children's Hospital, Pediatric Critical Care, University of Washington, Seattle, WA, United States
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Abstract
The microcirculation maintains tissue homeostasis through local regulation of blood flow and oxygen delivery. Perturbations in microvascular function are characteristic of several diseases and may be early indicators of pathological changes in the cardiovascular system and in parenchymal tissue function. These changes are often mediated by various reactive oxygen species and linked to disruptions in pathways such as vasodilation or angiogenesis. This overview compiles recent advances relating to redox regulation of the microcirculation by adopting both cellular and functional perspectives. Findings from a variety of vascular beds and models are integrated to describe common effects of different reactive species on microvascular function. Gaps in understanding and areas for further research are outlined. © 2020 American Physiological Society. Compr Physiol 10:229-260, 2020.
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Affiliation(s)
- Andrew O Kadlec
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.,Medical Scientist Training Program, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.,Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - David D Gutterman
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.,Department of Medicine-Division of Cardiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.,Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
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9
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Mashili F, Joachim A, Aboud S, Mchembe M, Chiwanga F, Addo J, Kendall L, Ako A, Abbas Z. Prospective exploration of the effect of adiposity and associated microbial factors on healing and progression of diabetic foot ulcers in Tanzania: study protocol of a longitudinal cohort study. BMJ Open 2019; 9:e031896. [PMID: 31848165 PMCID: PMC6937068 DOI: 10.1136/bmjopen-2019-031896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Diabetic foot ulcers (DFUs) are associated with high morbidity and mortality in low-income countries. This coexists with an increasing prevalence of obesity which has been reported to alter antimicrobial susceptibility and potentially affect the outcome of infected foot ulcers. This study aims to determine whether adiposity and local microbial factors affect the progression and healing of foot ulcers in people with type 2 diabetes in hospital settings in Tanzania. METHODS AND ANALYSIS A prospective cohort of 300 individuals with type 2 diabetes presenting with DFUs at an outpatient clinic will be enrolled into the study. At baseline, participants will be stratified into normal and high adiposity groups (150 per group) as measured by bioelectrical impedance analysis (BIA). Both groups will receive DFU management according to locally appropriate standards of care and will be followed up for 24 weeks or until complete wound healing, whichever occurs first. The primary end point is complete wound healing at 24 weeks while secondary end points are ulcer progression (worsening or improving), amputation and death. Enrolling 150 participants per group will have a minimum power of 80% to detect a 20% difference in cumulative incidence of complete ulcer healing (at the 5% level of statistical significance) between the normal and high adiposity groups. ETHICAL CONSIDERATIONS AND DISSEMINATION OF RESULTS This study will be conducted in compliance with the independent institutional review boards (IRBs), informed consent guidelines, the declaration of Helsinki and International Conference on Harmonisation, Good Clinical Practice Guidelines. Ethical clearance has been granted by the Muhimbili University of Health and Allied Sciences ethical review board (MUHAS Ref. No. DA.282/298/01 .C/). Permissions to conduct the study have been granted by the Abbas Medical Centre and the Muhimbili Academic Medical Centre (MAMC).Progress and results emanating from this work will be communicated to the scientific community through conference presentations, short communications (using journal letters and interesting case reports) and peer-reviewed publications. When necessary, through proper channels, popular means of communication (newspapers, magazines and online communications) will be used to inform policy and the public. TRIAL REGISTRATION NUMBER NCT03960255; Pre-results.
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Affiliation(s)
- Fredirick Mashili
- Physiology, Muhimbili University of Health and Allied Sciences, Dar es Salam, Tanzania
| | - Agricola Joachim
- Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Said Aboud
- Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Mabulla Mchembe
- Surgery, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Faraja Chiwanga
- Endocrinology and Diabetes, Muhimbili National Hospital, Dar es Salaam, Tanzania
| | - Juliet Addo
- Global catalyst, GlaxoSmithKline Research and Development, Stevenage, Hertfordshire, UK
| | - Lindsay Kendall
- Global catalyst, GlaxoSmithKline Research and Development, Stevenage, Hertfordshire, UK
| | - Agbor Ako
- Global catalyst, GlaxoSmithKline Research and Development, Stevenage, Hertfordshire, UK
| | - Zulfiqar Abbas
- Internal medicine, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
- Medicine, Abbas Medical Center, Dar es Salam, Tanzania
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Gryglewska B, Głuszewska A, Zarzycki B, Dzieża-Grudnik A, Fedyk-Łukasik M, Major P, Budzyński A, Gąsowski J, Grodzicki T. Post-occlusive reactive hyperemic response of skin microcirculation among extremely obese patients in the short and long term after bariatric surgery. Microcirculation 2019; 27:e12600. [PMID: 31782233 DOI: 10.1111/micc.12600] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 11/25/2019] [Indexed: 12/18/2022]
Abstract
OBJECTIVE To assess changes of post-occlusive reactive hyperemic response in skin microcirculation among extremely obese patients 10 days and 6 months after bariatric surgery for patients with and without hypertension. METHODS Skin blood flow was measured using PeriFlux laser Doppler fluxmetry. Data were analyzed in the entire group and two subgroups: with and without hypertension. RESULTS Data from 88 patients (mean age 42.1 ± 11.2 years, 40.5% men) were analyzed. Six months after bariatric surgery, the time to reach peak flows had been shortened (2.4 ± 1.7 vs 2.1 ± 1.0 seconds, P < .05) and the area of hyperemia had increased (1027 ± 791 vs 1386 ± 699 AU*s, P < .05). The total power of post-occlusive reactive hyperemic after occlusion had been augmented mainly with power intensification of endothelial and myogenic origin. Post-occlusive reactive hyperemic parameters had changed mainly in the subgroup with hypertension. Variations of anthropometric parameters, metabolic characteristic, and adipokines mainly influenced on studied hyperemic flow parameters variations after the intervention in multiple regression analysis. CONCLUSION Cutaneous post-occlusive reactive hyperemic reactivity in time and frequency domains improved 6 months after bariatric surgery, and improvements in microvascular function were observed mainly in patients with hypertension. Variations of anthropometric parameters, metabolic characteristics, and adipokines had influence on hyperemic flow reactivity.
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Affiliation(s)
- Barbara Gryglewska
- Department of Internal Medicine and Gerontology, Medical College, Jagiellonian University, Kraków, Poland
| | - Anna Głuszewska
- Department of Internal Medicine and Gerontology, Medical College, Jagiellonian University, Kraków, Poland
| | - Bartosz Zarzycki
- Department of Internal Medicine and Gerontology, Medical College, Jagiellonian University, Kraków, Poland
| | - Anna Dzieża-Grudnik
- Department of Internal Medicine and Gerontology, Medical College, Jagiellonian University, Kraków, Poland
| | - Małgorzata Fedyk-Łukasik
- Department of Internal Medicine and Gerontology, Medical College, Jagiellonian University, Kraków, Poland
| | - Piotr Major
- Department of Internal Medicine and Gerontology, Medical College, Jagiellonian University, Kraków, Poland.,2nd Department of General Surgery, Medical College, Jagiellonian University, Kraków, Poland
| | - Andrzej Budzyński
- Department of Internal Medicine and Gerontology, Medical College, Jagiellonian University, Kraków, Poland.,2nd Department of General Surgery, Medical College, Jagiellonian University, Kraków, Poland
| | - Jerzy Gąsowski
- Department of Internal Medicine and Gerontology, Medical College, Jagiellonian University, Kraków, Poland
| | - Tomasz Grodzicki
- Department of Internal Medicine and Gerontology, Medical College, Jagiellonian University, Kraków, Poland
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11
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Spinelli A, Buoncristiano M, Kovacs VA, Yngve A, Spiroski I, Obreja G, Starc G, Pérez N, Rito AI, Kunešová M, Sant'Angelo VF, Meisfjord J, Bergh IH, Kelleher C, Yardim N, Pudule I, Petrauskiene A, Duleva V, Sjöberg A, Gualtieri A, Hassapidou M, Hyska J, Burazeri G, Petrescu CH, Heinen M, Takacs H, Zamrazilová H, Bosi TB, Sacchini E, Pagkalos I, Cucu A, Nardone P, Gately P, Williams J, Breda J. Prevalence of Severe Obesity among Primary School Children in 21 European Countries. Obes Facts 2019; 12:244-258. [PMID: 31030201 PMCID: PMC6547273 DOI: 10.1159/000500436] [Citation(s) in RCA: 146] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 04/17/2019] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND The World Health Organization (WHO) European Childhood Obesity Surveillance Initiative (COSI) was established more than 10 years ago to estimate prevalence and monitor changes in overweight and obesity in children aged 6-9 years. Since then, there have been five rounds of data collection in more than 40 countries involving more than half a million children. To date, no comparative studies with data on severe childhood obesity from European countries have been published. OBJECTIVES The aim of this work was to present the prevalence of severe obesity in school-aged children from 21 countries participating in COSI. METHOD The data are from cross-sectional studies in 21 European WHO member states that took part in the first three COSI rounds of data collection (2007/2008, 2009/2010, 2012/2013). School-aged children were measured using standardized instruments and methodology. Children were classified as severely obese using the definitions provided by WHO and the International Obesity Task Force (IOTF). Analyses overtime, by child's age and mother's educational level, were performed in a select group of countries. RESULTS A total of 636,933 children were included in the analysis (323,648 boys and 313,285 girls). The prevalence of severe obesity varied greatly among countries, with higher values in Southern Europe. According to the WHO definition, severe obesity ranged from 1.0% in Swedish and Moldovan children (95% CI 0.7-1.3 and 0.7-1.5, respectively) to 5.5% (95% CI 4.9-6.1) in Maltese children. The prevalence was generally higher among boys compared to girls. The IOTF cut-offs lead to lower estimates, but confirm the differences among countries, and were more similar for both boys and girls. In many countries 1 in 4 obese children were severely obese. Applying the estimates of prevalence based on the WHO definition to the whole population of children aged 6-9 years in each country, around 398,000 children would be expected to be severely obese in the 21 European countries. The trend between 2007 and 2013 and the analysis by child's age did not show a clear pattern. Severe obesity was more common among children whose mother's educational level was lower. CONCLUSIONS Severe obesity is a serious public health issue which affects a large number of children in Europe. Because of the impact on educational, health, social care, and economic systems, obesity needs to be addressed via a range of approaches from early prevention of overweight and obesity to treatment of those who need it.
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Affiliation(s)
- Angela Spinelli
- Istituto Superiore di Sanità (National Institute of Health), National Centre for Disease Prevention and Health Promotion, Rome, Italy,
| | - Marta Buoncristiano
- WHO European Office for the Prevention and Control of the NCDs, Moscow, Russian Federation
| | - Viktoria Anna Kovacs
- National Institute of Pharmacy and Nutrition, DG of Food and Nutrition Science, Budapest, Hungary
| | - Agneta Yngve
- Department of food studies, Nutrition and Dietetics, Uppsala University, Uppsala, Sweden
| | - Igor Spiroski
- Institute of Public Health of the Republic of Macedonia, Skopje, North Macedonia
| | - Galina Obreja
- State University of Medicine and Pharmacy, Chișinău, Moldova
| | - Gregor Starc
- Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
| | - Napoleón Pérez
- Spanish Observatory of Nutrition and Study of Obesity, Madrid, Spain
| | - Ana Isabel Rito
- National Institute of Health Dr. Ricardo Jorge, Lisbon, Portugal
| | - Marie Kunešová
- Obesity Management Centre, Institute of Endocrinology, Prague, Czechia
| | | | - Jørgen Meisfjord
- Department of Health and Inequality, Division of Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Ingunn Holden Bergh
- Department of Child Health and Development, Division of Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway
| | | | | | - Iveta Pudule
- Centre for Disease Prevention and Control, Riga, Latvia
| | - Ausra Petrauskiene
- Department of Preventive Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Vesselka Duleva
- National Center of Public Health and Analyses, Sofia, Bulgaria
| | - Agneta Sjöberg
- Department of Food and Nutrition and Sport Science, University of Gothenburg, Gothenburg, Sweden
| | | | - Maria Hassapidou
- Department of Nutrition and Dietetics, Alexander Technological Educational Institute of Thessaloniki, Thessaloniki, Greece
| | | | | | | | | | - Hajnalka Takacs
- Semmelweis University, Karoly Racz School of PhD Studies, Budapest, Hungary
| | - Hana Zamrazilová
- Obesity Management Centre, Institute of Endocrinology, Prague, Czechia
| | | | | | - Ioannis Pagkalos
- Department of Nutrition and Dietetics, Alexander Technological Educational Institute of Thessaloniki, Thessaloniki, Greece
| | | | - Paola Nardone
- Istituto Superiore di Sanità (National Institute of Health), National Centre for Disease Prevention and Health Promotion, Rome, Italy
| | - Paul Gately
- Centre for Applied Obesity Research, Leeds Beckett University, Leeds, United Kingdom
| | - Julianne Williams
- WHO European Office for the Prevention and Control of the NCDs, Moscow, Russian Federation
| | - João Breda
- WHO European Office for the Prevention and Control of the NCDs, Moscow, Russian Federation
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12
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Mosdósi B, Bölcskei K, Helyes Z. Impairment of microcirculation and vascular responsiveness in adolescents with primary Raynaud phenomenon. Pediatr Rheumatol Online J 2018; 16:20. [PMID: 29566759 PMCID: PMC5865297 DOI: 10.1186/s12969-018-0237-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 03/12/2018] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Raynaud's phenomenon (RP) is a functional vascular disease, presenting with recurrent episodes of ischemia of extremities in response to cold and emotional stress. Investigating cutaneous microcirculation is an important tool in understanding the complex neuro-immuno-vascular interactions in its pathophysiological mechanisms. Since there is no available data on vascular responsiveness in RP in the paediatric population, we investigated skin perfusion and heat-induced hyperaemia in comparison with clinical severity and laboratory parameters of the disease. METHODS Fifty two adolescents (27 patients with primary RP and 25 age-matched healthy controls) were investigated in the study. Patients were divided into two groups according to the symptoms existing within the previous 2 months. Following baseline microcirculation measurement with Laser Doppler flowmetry (Periflux 5000 system), all subjects underwent local heating test at 42 °C and 44 °C. Besides routine laboratory parameters, immune-serological tests and the vasoactive sensory neuropeptides somatostatin and pituitary adenylate-cyclase activating polypeptide (PACAP) were measured. RESULTS Baseline perfusion measured in perfusion units (PU) at 32 °C was significantly lower in symptomatic RP patients (97.6 ± 22.4 PU) compared with both healthy volunteers (248.3 ± 23.5 PU, p < 0.001) and RP patients without symptoms (187.4 ± 24.9 PU, p < 0.05). After local heating to 42 °C maximum blood flow was significantly reduced in primary RP participants with current symptoms (358.6 ± 43.9 PU, p < 0.001), but not in asymptomatic ones (482.3 ± 28.7 PU, p > 0.05) when compared with healthy subjects (555.9 ± 28.2 PU). Both the area under the response curve and the latency to reach the maximum flow were significantly increased in both RP groups (symptomatic 164.6 ± 7.4 s, p < 0.001, asymptomatic 236.4 ± 17.4 s, p < 0.001) when compared with the control group (101.9 ± 4.7 s). The heat-induced percentage increase from baseline to maximal blood flow was significantly greater in symptomatic RP adolescents in comparison with healthy ones. Laboratory parameters and neuropeptide plasma levels were not altered in any groups. CONCLUSION To our knowledge this is the first study in paediatric population to show altered heat-induced cutaneous hyperaemia responses in relation with the clinical severity and symptomatology.
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Affiliation(s)
- Bernadett Mosdósi
- Clinical Center, Department of Pediatrics, University of Pécs, József Attila u. 7, Pécs, H-7623, Hungary.
| | - Kata Bölcskei
- 0000 0001 0663 9479grid.9679.1János Szentágothai Research Centre & Centre for Neuroscience, University of Pécs, Ifjúság útja 20, Pécs, H-7624 Hungary ,0000 0001 0663 9479grid.9679.1Medical School, Department of Pharmacology and Pharmacotherapy, University of Pécs, Szigeti út 12, Pécs, H-7624 Hungary
| | - Zsuzsanna Helyes
- 0000 0001 0663 9479grid.9679.1János Szentágothai Research Centre & Centre for Neuroscience, University of Pécs, Ifjúság útja 20, Pécs, H-7624 Hungary ,0000 0001 0663 9479grid.9679.1Medical School, Department of Pharmacology and Pharmacotherapy, University of Pécs, Szigeti út 12, Pécs, H-7624 Hungary
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CONDITION OF THE MICROCIRCULATION IN ADOLESCENTS WITH OBESITY AND CONCOMITANT INVOLVEMENT OF THE PANCREAS: MODERN LOOK AT THE PROBLEM AND OUR OWN CLINICAL SUPERVISION. WORLD OF MEDICINE AND BIOLOGY 2018. [DOI: 10.26724/2079-8334-2018-1-63-42-46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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14
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Bastos da Cunha C, Sicuro F, Maranhão PA, Borges MA, Cyrino FZ, Gazolla FM, Madeira IR, Bordallo MAN, Bouskela E, Kraemer-Aguiar LG. Microcirculation, Adiposity, and Traditional and Emerging Cardiovascular Risk Factors in Prepubertal Children. J Endocr Soc 2017; 1:908-917. [PMID: 29264541 PMCID: PMC5686770 DOI: 10.1210/js.2017-00130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 06/06/2017] [Indexed: 01/12/2023] Open
Abstract
PURPOSE Previous studies have shown that microvascular dysfunction (MD) is associated with a number of cardiovascular risk factors, including obesity. Few studies have assessed microvascular reactivity in children, and in most of these, results were confounded by the effects of puberty. Our aim was to establish whether MD is already present in obese prepubertal children. METHODS This cross-sectional study included 52 obese, 18 overweight, and 28 eutrophic children, with a mean ± standard deviation age of 7.44 ± 1.22 years. We evaluated cardiovascular risk factors and nutritive microvascular function by using nailfold dynamic videocapillaroscopy and determined functional capillary density (FCD), red blood cell velocity at resting conditions (RBCV) and at peak (RBCVmax), and time to reach peak velocity during the post-occlusive reactive hyperemic response following 1 minute ischemia. RESULTS On univariate analysis, differences in microvascular reactivity were not observed among the groups. Obese and overweight children had significantly higher scores than eutrophic children for the following parameters: body mass index, waist circumference, waist-to-height ratio, mean arterial pressure, homeostasis model assessment for insulin resistance, levels of insulin, leptin, glucose, triglycerides, total cholesterol, uric acid, and C-reactive protein. Multivariate analysis demonstrated the association between metabolic, anthropometric, and microvascular variables, stratified according to the degree of adiposity and body fat distribution. CONCLUSIONS Univariate analysis did not show any difference in microvascular reactivity between groups but, by testing these variables by multivariate means, we noticed a common and direct variation between cardiovascular/metabolic risk factors and microvascular reactivity occurring early in life.
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Affiliation(s)
- Carolina Bastos da Cunha
- Endocrinology, Department of Internal Medicine, Faculty of Medical Sciences, State University of Rio Janeiro, Rio de Janeiro, Brazil 20550-170
| | - Fernando Sicuro
- Clinical and Experimental Research Laboratory on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, Brazil 20550-013
| | - Priscila Alves Maranhão
- Department of Information Sciences and Health Decision (CIDES) of the Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
| | - Marcos Antonio Borges
- Endocrinology, Department of Internal Medicine, Faculty of Medical Sciences, State University of Rio Janeiro, Rio de Janeiro, Brazil 20550-170
| | - Fátima Z. Cyrino
- Clinical and Experimental Research Laboratory on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, Brazil 20550-013
| | - Fernanda Mussi Gazolla
- Endocrinology, Department of Internal Medicine, Faculty of Medical Sciences, State University of Rio Janeiro, Rio de Janeiro, Brazil 20550-170
| | - Isabel Rey Madeira
- Endocrinology, Department of Internal Medicine, Faculty of Medical Sciences, State University of Rio Janeiro, Rio de Janeiro, Brazil 20550-170
| | - Maria Alice Neves Bordallo
- Endocrinology, Department of Internal Medicine, Faculty of Medical Sciences, State University of Rio Janeiro, Rio de Janeiro, Brazil 20550-170
| | - Eliete Bouskela
- Clinical and Experimental Research Laboratory on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, Brazil 20550-013
| | - Luiz Guilherme Kraemer-Aguiar
- Endocrinology, Department of Internal Medicine, Faculty of Medical Sciences, State University of Rio Janeiro, Rio de Janeiro, Brazil 20550-170
- Clinical and Experimental Research Laboratory on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, Brazil 20550-013
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15
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Charwat-Resl S, Yarragudi R, Heimbach M, Leitner K, Leutner M, Gamper J, Giurgea GA, Mueller M, Koppensteiner R, Gschwandtner ME, Kautzky-Willer A, Schlager O. Microvascular function in women with former gestational diabetes: A cohort study. Diab Vasc Dis Res 2017; 14:214-220. [PMID: 28111976 DOI: 10.1177/1479164116683148] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVE In the long term, diabetes mellitus is potentially associated with the occurrence of microvascular damage. This study sought to assess whether a history of prior gestational diabetes mellitus is associated with long-term effects on the women's microcirculation. METHODS Within the scope of a long-term follow-up of the 'Viennese Post-Gestational Diabetes Project', women with prior gestational diabetes mellitus as well as women with previous pregnancy but with no history of gestational diabetes mellitus (controls) were enrolled in this cross-sectional study. Microvascular function was assessed by post-occlusive reactive hyperaemia using laser Doppler fluxmetry. Baseline perfusion, biological zero, peak perfusion, time to peak and recovery time were recorded and compared between both groups. RESULTS Microvascular function was assessed in 55 women with prior gestational diabetes mellitus (46.1 ± 4.6 years) and 32 women with previous pregnancy but without prior gestational diabetes mellitus (42.9 ± 5.3 years). The mean period of time between delivery and the assessment of microvascular function was 16.2 ± 5.2 years in women with prior gestational diabetes mellitus group and 14.2 ± 4.8 years in controls. Regarding microvascular function, baseline perfusion, biological zero, peak perfusion, time to peak and recovery time did not differ between women with prior gestational diabetes mellitus and controls (all p > 0.05). CONCLUSION In the long term, microvascular function appears not to be impaired in women with prior gestational diabetes mellitus.
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Affiliation(s)
- Silvia Charwat-Resl
- 1 Division of Angiology, Department of Medicine II, Medical University of Vienna, Vienna, Austria
- 2 Cardiology and Intensive Care Medicine, Department of Medicine II, Klinikum Wels-Grieskirchen, Wels, Austria
| | - Rajashri Yarragudi
- 3 Gender Medicine Unit, Division of Endocrinology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Moritz Heimbach
- 1 Division of Angiology, Department of Medicine II, Medical University of Vienna, Vienna, Austria
| | - Karoline Leitner
- 3 Gender Medicine Unit, Division of Endocrinology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Michael Leutner
- 3 Gender Medicine Unit, Division of Endocrinology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Jutta Gamper
- 4 Center for Medical Statistics, Informatics, and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Georgiana-Aura Giurgea
- 1 Division of Angiology, Department of Medicine II, Medical University of Vienna, Vienna, Austria
| | - Markus Mueller
- 1 Division of Angiology, Department of Medicine II, Medical University of Vienna, Vienna, Austria
| | - Renate Koppensteiner
- 1 Division of Angiology, Department of Medicine II, Medical University of Vienna, Vienna, Austria
| | - Michael E Gschwandtner
- 1 Division of Angiology, Department of Medicine II, Medical University of Vienna, Vienna, Austria
| | - Alexandra Kautzky-Willer
- 3 Gender Medicine Unit, Division of Endocrinology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Oliver Schlager
- 1 Division of Angiology, Department of Medicine II, Medical University of Vienna, Vienna, Austria
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16
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Shah AS, Dolan LM, Khoury PR, Gao Z, Kimball TR, Urbina EM. Severe Obesity in Adolescents and Young Adults Is Associated With Subclinical Cardiac and Vascular Changes. J Clin Endocrinol Metab 2015; 100:2751-7. [PMID: 25974736 PMCID: PMC4490306 DOI: 10.1210/jc.2014-4562] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
CONTEXT Severe obesity is the fastest growing subgroup of obesity in youth. OBJECTIVE We sought to explore the association between severe obesity and subclinical measures of cardiac and vascular structure and function in adolescents and young adults. DESIGN, SETTING, AND PARTICIPANTS This was a cross-sectional comparison of 265 adolescents and young adults with severe obesity (defined as body mass index [BMI] ≥120% of the 95th percentile) to 182 adolescents and young adults with obesity (defined as BMI ≥100-119th of the 95th percentile) at tertiary medical center. MAIN OUTCOMES Noninvasive measures of cardiac and vascular structure and function were assessed. RESULTS Participants were a mean age of 17.9 years, 62% were non-Caucasian, and 68% were female. Systolic blood pressure, fasting insulin, C-reactive protein, IL-6, and frequency of type 2 diabetes were higher in participants with severe obesity (all P < .05). Arterial thickness and stiffness, cardiac structure, and diastolic function were also significantly worse in youth with severe obesity as measured by higher left ventricular mass index, worse diastolic function, higher carotid intima media thickness, and pulse wave velocity and lower brachial distensibility (all P < .05). Regression modeling showed that severe obesity (compared with obesity) was independently associated with each of the above outcomes after adjustment for age, race, sex, blood pressure, lipids, and inflammatory markers (P < .05). CONCLUSIONS Adolescents and young adults with severe obesity have a more adverse cardiovascular risk profile and worse cardiac and vascular structure and function. More importantly, severe obesity is independently associated with these subclinical cardiac and vascular changes.
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Affiliation(s)
- Amy S Shah
- Cincinnati Children's Hospital Medical Center, The University of Cincinnati, Cincinnati, Ohio 45229
| | - Lawrence M Dolan
- Cincinnati Children's Hospital Medical Center, The University of Cincinnati, Cincinnati, Ohio 45229
| | - Philip R Khoury
- Cincinnati Children's Hospital Medical Center, The University of Cincinnati, Cincinnati, Ohio 45229
| | - Zhiqan Gao
- Cincinnati Children's Hospital Medical Center, The University of Cincinnati, Cincinnati, Ohio 45229
| | - Thomas R Kimball
- Cincinnati Children's Hospital Medical Center, The University of Cincinnati, Cincinnati, Ohio 45229
| | - Elaine M Urbina
- Cincinnati Children's Hospital Medical Center, The University of Cincinnati, Cincinnati, Ohio 45229
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17
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Giurgea GA, Mlekusch W, Charwat-Resl S, Mueller M, Hammer A, Gschwandtner ME, Koppensteiner R, Schlager O. Relationship of age and body mass index to skin temperature and skin perfusion in primary Raynaud's phenomenon. Arthritis Rheumatol 2015; 67:238-42. [PMID: 25330753 DOI: 10.1002/art.38923] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 10/14/2014] [Indexed: 01/14/2023]
Abstract
OBJECTIVE To assess the relationship of age and body mass index (BMI) to skin temperature and perfusion in patients with primary Raynaud's phenomenon (RP) compared with controls. METHODS Patients with RP as well as age- and sex-matched controls underwent external cold provocation by exposure to 20 °C water for 1 minute. Before and after cold provocation, skin temperature and skin perfusion were measured. RESULTS Twenty-six patients with RP (20 women and 6 men; median age 41.9 years) and 22 controls (17 women and 5 men; median age 42.9 years) were studied. In RP patients, cold exposure led to a median change in skin temperature of -7% (interquartile range [IQR] -13.1, -4.1) and to a median change in skin perfusion of -26.4% (IQR -36.2, 2.9). In controls, skin temperature changed by -15.7% (IQR -18.3, -11.6) and skin perfusion by -33% (IQR -53.3, -1.1) upon cold exposure. In patients with RP, age and BMI were related to skin temperature (for age, r = 0.683, P < 0.0001; for BMI r = 0.657, P < 0.0001) and skin perfusion (for age, r = 0.595, P = 0.002; for BMI, r = 0.653, P < 0.0001), while no association was found in controls. The cold-induced decrease in skin temperature was inversely related to age (r = -0.518, P = 0.003) and BMI (r = -0.662, P < 0.0001) in patients with RP; correlations were not observed in controls. The cold-induced change in skin perfusion was not related to age or BMI in either group. CONCLUSION The cold-induced decrease in skin temperature is related to age and BMI in patients with RP but not in controls. Further studies are needed to clarify the pathophysiology of digital ischemia in primary RP.
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18
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Kurniawan ED, Cheung CY, Tay WT, Mitchell P, Saw SM, Wong TY, Cheung N. The relationship between changes in body mass index and retinal vascular caliber in children. J Pediatr 2014; 165:1166-1171.e1. [PMID: 25262303 DOI: 10.1016/j.jpeds.2014.08.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 06/30/2014] [Accepted: 08/18/2014] [Indexed: 12/22/2022]
Abstract
OBJECTIVE To examine the longitudinal relationship between changes in childhood body mass index (BMI) and retinal vascular caliber. STUDY DESIGN A prospective study of 421 healthy children aged 7-9 years in 2001 who returned for follow-up in 2006. At both visits, retinal photographs and anthropometric measurements were taken following standardized protocols. Retinal arteriolar and venular calibers were measured using a computer-based program and summarized as central retinal artery equivalent (CRAE) and central retinal vein equivalent (CRVE). RESULTS At follow-up, mean weight, height, and BMI increased significantly (P < .001). Mean CRVE increased by 3.4 μm (P < .001) but mean CRAE did not alter significantly (P = .340). On multivariate analysis, greater BMI was cross-sectionally associated with narrower CRAE (P < .01) and wider CRVE (P < .01). On longitudinal analysis, increasing BMI was associated with increasing CRVE (P = .04) over the 5-year period. Baseline BMI was associated with increased venular caliber and decreased arteriolar caliber at follow-up, and vice versa (P < .05). CONCLUSIONS Increasing BMI is associated with increasing retinal venular caliber over time in children, and baseline retinal vascular caliber changes increase the risk of higher BMI at follow-up. As both widened retinal venular caliber and greater BMI are associated with risk of cardiovascular events in adults, progressive retinal venular widening could be a manifestation of an adverse microvascular effect of obesity early in life.
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Affiliation(s)
- Emil D Kurniawan
- Center for Eye Research Australia, University of Melbourne, Melbourne, Australia
| | - Carol Y Cheung
- Singapore Eye Research Institute, Singapore National Eye Center, Singapore; Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Wan Ting Tay
- Singapore Eye Research Institute, Singapore National Eye Center, Singapore
| | - Paul Mitchell
- Center for Vision Research, Department of Ophthalmology and Westmead Millennium Institute, University of Sydney, Sydney, Australia
| | - Seang-Mei Saw
- Singapore Eye Research Institute, Singapore National Eye Center, Singapore; Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Tien Yin Wong
- Singapore Eye Research Institute, Singapore National Eye Center, Singapore; Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Ning Cheung
- Singapore Eye Research Institute, Singapore National Eye Center, Singapore; Department of Ophthalmology, University of Hong Kong, Hong Kong SAR, China.
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Schlager O, Giurgea A, Hammer A, Charwat-Resl S, Margeta C, Mueller M, Ehringer T, Zehetmayer S, Willfort-Ehringer A, Koppensteiner R, Gschwandtner ME. Impact of age and gender on microvascular function. Eur J Clin Invest 2014; 44:766-74. [PMID: 24942279 DOI: 10.1111/eci.12293] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 06/13/2014] [Indexed: 01/06/2023]
Abstract
BACKGROUND Microcirculatory function can be assessed by postocclusive reactive hyperaemia (PORH) using laser Doppler fluxmetry. Previous studies have shown that PORH reveals microvascular damage at an early stage. In particular, at younger ages, PORH might depend on age and gender. To implement PORH into a larger scale of clinical studies, one has to be aware of the influence of age and gender on microcirculation. The aim of this study was to assess the impact of age and gender on microcirculatory function during adolescence. MATERIALS AND METHODS Within the scope of an epidemiological project, 896 children and adolescents underwent assessment of PORH by laser Doppler fluxmetry. Microcirculatory parameters during PORH (baseline perfusion, biological zero, peak perfusion, time to peak perfusion and recovery time) were analysed in relation to age (by tertiles) and gender. RESULTS Baseline perfusion, biological zero and peak perfusion were lower in children/adolescents in the upper age tertile (12·3-18·1 years) than in the middle (9·8-12·2 years) and lower (4·3-9·7 years) age tertiles (P < 0·0001). In the total of participants, baseline perfusion, biological zero and peak perfusion were higher in males than in females (P < 0·0001). Analysing microcirculatory parameters as a function of age and gender, the sex differences were only apparent in the upper and the middle age tertiles, but not in the lower. CONCLUSIONS During adolescence, PORH is a function of age. At higher age, microvascular reactivity considerably depends on gender, whereas no sex differences are present at younger ages.
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Affiliation(s)
- Oliver Schlager
- Division of Angiology, Department of Medicine II, Medical University of Vienna, Vienna, Austria
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Hedvall Kallerman P, Hagman E, Edstedt Bonamy AK, Zemack H, Marcus C, Norman M, Westerståhl M. Obese children without comorbidities have impaired microvascular endothelial function. Acta Paediatr 2014; 103:411-7. [PMID: 24372596 DOI: 10.1111/apa.12549] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 12/04/2013] [Accepted: 12/18/2013] [Indexed: 01/18/2023]
Abstract
AIM The aim was to test acetylcholine-induced endothelium-dependent vasodilatation in obese children without comorbidities, compared with normal weight controls, and to analyse associations between vasodilatation and other potential risk factors. METHODS Endothelium-dependent vasodilatation was induced by transdermal iontophoresis of acetylcholine in 54 obese children (8.3-18.2 years old, 41% girls) and 44 normal weight controls (7.5-20.2 years old, 82% girls), and the subsequent change in perfusion was measured with laser Doppler flowmetry. In a subgroup of the obese children, associations between acetylcholine-induced vasodilatation and blood lipids, glucose/insulin metabolism, inflammation, 24-h ambulatory blood pressure (ABP), cardiovascular fitness and duration of obesity were evaluated. RESULTS We found a lower endothelium-dependent vasodilatory response to acetylcholine in the obese children than the controls (p < 0.001). The peak perfusion response was 33% lower in obese children (p = 0.001). There was a trend towards lower vasodilatation in obese children with higher levels of triglycerides (p = 0.07). Children with the shortest duration of obesity exhibited the lowest vasodilatation (p = 0.03). No associations were found between 24-h ABP, cardiovascular fitness, inflammation and glucose/insulin metabolism. CONCLUSION Obese children without comorbidities have significantly impaired microvascular endothelial function. The children who had been obese for a longer time seemed less affected.
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Affiliation(s)
- P Hedvall Kallerman
- Divisions of Pediatrics; Department of Clinical Science, Intervention and Technology; Karolinska Institutet; Stockholm Sweden
| | - E Hagman
- Divisions of Pediatrics; Department of Clinical Science, Intervention and Technology; Karolinska Institutet; Stockholm Sweden
| | - A-K Edstedt Bonamy
- Department of Women's and Children's Health; Karolinska Institutet; Stockholm Sweden
| | - H Zemack
- Divisions of Pediatrics; Department of Clinical Science, Intervention and Technology; Karolinska Institutet; Stockholm Sweden
| | - C Marcus
- Divisions of Pediatrics; Department of Clinical Science, Intervention and Technology; Karolinska Institutet; Stockholm Sweden
- National Childhood Obesity Center; Karolinska University Hospital Huddinge; Stockholm Sweden
| | - M Norman
- Divisions of Pediatrics; Department of Clinical Science, Intervention and Technology; Karolinska Institutet; Stockholm Sweden
| | - M Westerståhl
- Divisions of Pediatrics; Department of Clinical Science, Intervention and Technology; Karolinska Institutet; Stockholm Sweden
- Division of Clinical Physiology; Department of Laboratory Medicine; Karolinska Institutet; Stockholm Sweden
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Montero D, Walther G, Perez-Martin A, Mercier CS, Gayrard S, Vicente-Salar N, Sempere-Ortells JM, Martinez-Peinado P, Roche E, Vinet A. Effects of a lifestyle program on vascular reactivity in macro- and microcirculation in severely obese adolescents. J Clin Endocrinol Metab 2014; 99:1019-26. [PMID: 24423343 DOI: 10.1210/jc.2013-3394] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
CONTEXT AND OBJECTIVE This study aimed to comprehensively assess the macro- and microcirculation of severely obese adolescents (SOA) and normal-weight counterparts and to determine the longitudinal effects of weight loss on vascular function in SOA. DESIGN, SETTING, PARTICIPANTS, AND OUTCOME MEASURES: Seventeen SOA (body mass index z-score = 4.22 ± 0.73) and 19 puberty-matched normal-weight counterparts (body mass index z-score = -0.02 ± 1.04) were included. The SOA participated in a 4 month weight loss program. Brachial artery flow-mediated dilation and response to sublingual nitrate (nitrate-mediated dilation [NMD]) were assessed by high-resolution ultrasound. Microvascular reactivity was evaluated by laser Doppler flowmetry in response to NMD, iontophoresis of acetylcholine and sodium nitroprusside, and local hyperthermia. Plasma insulin, leptin, resistin, C-reactive protein, myeloperoxidase, and tissue plasminogen activator were measured. RESULTS At baseline, SOA had similar flow-mediated dilation and impaired NMD in the brachial artery compared to normal-weight adolescents. Similarly, peak responses to acetylcholine and sodium nitroprusside iontophoresis and to local hyperthermia were unaltered, whereas cutaneous blood flow after NMD was lower in the forearm microcirculation of SOA. All plasma measurements were significantly higher in SOA. After the 4-month program, SOA presented a weight reduction of 7.4 ± 3.1%, but neither brachial artery nor microvascular reactivity variables were improved. Significant decreases were detected in plasma leptin, myeloperoxidase, and tissue plasminogen activator. CONCLUSIONS Macro- and microvascular endothelial function are preserved in adolescents with severe obesity. Conversely, weight loss does not improve their impaired smooth muscle response to exogenous organic nitrate in both vascular beds, despite reducing plasma markers adversely related to vascular homeostasis.
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Affiliation(s)
- David Montero
- Avignon University (D.M., G.W., S.G., A.V.), LAPEC EA4278, F-84000 Avignon, France; Vascular Medicine Unit (A.P.-M.), Nimes University Hospital, 30021 Nimes, France; Applied Biology Department (D.M., N.V.-S., E.R.), Nutrition/Institute of Bioengineering, University Miguel Hernandez, 03202 Elche, Alicante, Spain; AJO les Oiseaux (C.S.M.), 83110 Sanary sur Mer, France; CIBERobn (Fisiopatología de la Obesidad y la Nutrición CB12/03/30038) (E.R.), Instituto de Salud Carlos III, ES-28029 Madrid, Spain; and Unit of Immunology (J.M.S., P.M.-P.), Depàrtment of Biotechnology, University of Alicante, 03690 San Vicente del Raspeig, Spain
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22
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Matsuo Y, Oberbach A, Till H, Inge TH, Wabitsch M, Moss A, Jehmlich N, Völker U, Müller U, Siegfried W, Kanesawa N, Kurabayashi M, Schuler G, Linke A, Adams V. Impaired HDL function in obese adolescents: impact of lifestyle intervention and bariatric surgery. Obesity (Silver Spring) 2013; 21:E687-95. [PMID: 23804534 DOI: 10.1002/oby.20538] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 04/12/2013] [Accepted: 06/03/2013] [Indexed: 12/15/2022]
Abstract
OBJECTIVE HDL regulates endothelial function via stimulation of nitric oxide production. It is documented that endothelial function is impaired in obese adolescents, and improved by lifestyle interventions (LI). DESIGN AND METHODS HDL function in obese adolescents and the impact of LI or Roux-en-Y gastric bypass surgery (RYGB) was assessed. HDL was isolated from 14 adolescents with normal body mass index (HDLcontrol ), 10 obese (HDLobese ) before and after 6 month LI, and five severe obese adolescents before and one year after RYGB. HDL-mediated phosphorylation of endothelial nitric oxide synthase (eNOS)-Ser(1177) , eNOS-Thr(495) , and PKC-ßII was evaluated. In addition the HDL proteome was analyzed. RESULTS HDLobese -mediated eNOS-Ser(1177) phosphorylation was reduced, whereas eNOS-Thr(495) phosphorylation increased significantly when compared to HDLcontrol . No impact of obesity was observed on PKC-ßII phosphorylation. LI and RYGB had no impact on HDL-mediated phosphorylation of eNOS and PKC-ßII. A principle component plot analysis of the HDL particle separated controls and severe obese, whereas the interventions did not trigger sufficient differences to the HDL proteome to permit distinction. CONCLUSION These results demonstrated that HDL-function is impaired in obese adolescents, and that LI or RYGB did not correct this dysfunction. This might be an argument for developing earlier prevention strategies in obese adolescents to avoid HDL dysfunction.
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Affiliation(s)
- Yae Matsuo
- University Leipzig-Heart Center Leipzig, Department of Cardiology, Leipzig, Germany; Takasaki General Medical Center, Division of Cardiology, Takasaki, Japan; Gunma University School of Medicine, Department of Cardiology, Maebashi, Japan
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23
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Holdridge A, DiGregorio H, Selekman J. Breaking the silence: addressing skin issues in obese and overweight children. J Pediatr Nurs 2013; 28:e22-7. [PMID: 23685262 DOI: 10.1016/j.pedn.2013.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 03/27/2013] [Accepted: 04/20/2013] [Indexed: 10/26/2022]
Abstract
Skin irritation and breakdown can cause considerable physical and psychological pain, yet skin alterations and hygiene issues are often not addressed during routine healthcare visits for children who are overweight and obese. The number of children with obesity has increased significantly, yet there is limited literature to assist children with the private physical symptoms and inconveniences that accompany obesity. Healthcare professionals focus on nutritional intake and activity and treat comorbidities related to obesity, since comorbidities affect quality of life, but so can the pain and embarrassment of skin issues. This article addresses skin issues related to being overweight and obese.
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Affiliation(s)
- Amanda Holdridge
- Healthy Weight Program, The Children's Hospital of Philadelphia, Philadelphia, PA
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24
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Kelly AS, Barlow SE, Rao G, Inge TH, Hayman LL, Steinberger J, Urbina EM, Ewing LJ, Daniels SR. Severe obesity in children and adolescents: identification, associated health risks, and treatment approaches: a scientific statement from the American Heart Association. Circulation 2013; 128:1689-712. [PMID: 24016455 DOI: 10.1161/cir.0b013e3182a5cfb3] [Citation(s) in RCA: 697] [Impact Index Per Article: 63.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Severe obesity afflicts between 4% and 6% of all youth in the United States, and the prevalence is increasing. Despite the serious immediate and long-term cardiovascular, metabolic, and other health consequences of severe pediatric obesity, current treatments are limited in effectiveness and lack widespread availability. Lifestyle modification/behavior-based treatment interventions in youth with severe obesity have demonstrated modest improvement in body mass index status, but participants have generally remained severely obese and often regained weight after the conclusion of the treatment programs. The role of medical management is minimal, because only 1 medication is currently approved for the treatment of obesity in adolescents. Bariatric surgery has generally been effective in reducing body mass index and improving cardiovascular and metabolic risk factors; however, reports of long-term outcomes are few, many youth with severe obesity do not qualify for surgery, and access is limited by lack of insurance coverage. To begin to address these challenges, the purposes of this scientific statement are to (1) provide justification for and recommend a standardized definition of severe obesity in children and adolescents; (2) raise awareness of this serious and growing problem by summarizing the current literature in this area in terms of the epidemiology and trends, associated health risks (immediate and long-term), and challenges and shortcomings of currently available treatment options; and (3) highlight areas in need of future research. Innovative behavior-based treatment, minimally invasive procedures, and medications currently under development all need to be evaluated for their efficacy and safety in this group of patients with high medical and psychosocial risks.
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25
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Schlager O, Widhalm K, Hammer A, Giurgea A, Margeta C, Fritsch M, Zehetmayer S, Koppensteiner R, Gschwandtner ME, Willfort-Ehringer A. Familial hypercholesterolemia affects microvascular autoregulation in children. Metabolism 2013; 62:820-7. [PMID: 23357531 DOI: 10.1016/j.metabol.2012.12.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 12/03/2012] [Accepted: 12/22/2012] [Indexed: 10/27/2022]
Abstract
OBJECTIVE Familial hypercholesterolemia (FH) impairs macrovascular endothelial function in childhood and causes an increase of cardiovascular risk in later life. Whether microvascular function is affected in children with FH is unknown. The aim of this study was to investigate the impact of FH on microvascular autoregulation in children by post occlusive reactive hyperemia (PORH). METHODS PORH of the skin was assessed using laser Doppler fluxmetry. Baseline perfusion, biological zero, defined as no-flow laser Doppler signal during suprasystolic occlusion, peak perfusion after release of suprasystolic occlusion, as well as time to peak perfusion and recovery time, defined as time until baseline perfusion is resumed, were measured in 16 children, who were diagnosed with FH according to current guidelines, and in 91 healthy controls. RESULTS In children with FH, peak perfusion was higher (FH: 1.60±0.68 vs. controls: 1.26±0.50 AU [arbitrary units], p=0.02), recovery time was longer (110±42.61 vs. 83.18±35.08 s, p=0.01) and biological zero was lower than in controls (0.12±0.04 vs. 0.18±0.05 AU, p<0.001). Baseline perfusion and time to peak were not different between children with FH and controls (baseline perfusion: 0.43±0.21 vs. 0.38±0.15 AU, p=0.18; time to peak: 15.44±12.25 vs. 18.18±17.79 s, p=0.56). CONCLUSION For the first time the present study reveals an impact of FH on microvascular autoregulation in children: the differences of PORH between children with FH and controls indicate an affected autoregulation of microvascular blood flow in FH, which has its onset in childhood.
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Affiliation(s)
- Oliver Schlager
- Department of Medicine II, Division of Angiology, Medical University of Vienna, Austria
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26
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Schlager O, Hammer A, Willfort-Ehringer A, Fritsch M, Rami-Merhar B, Schober E, Nagl K, Giurgea A, Margeta C, Zehetmayer S, Schernthaner GH, Koppensteiner R, Gschwandtner ME. Microvascular autoregulation in children and adolescents with type 1 diabetes mellitus. Diabetologia 2012; 55:1633-40. [PMID: 22366881 DOI: 10.1007/s00125-012-2502-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 01/16/2012] [Indexed: 12/31/2022]
Abstract
AIMS/HYPOTHESIS Deterioration of microvascular function may have an early onset in individuals with type 1 diabetes mellitus. We hypothesised that microvascular autoregulation is impaired in children with type 1 diabetes and can be detected non-invasively by postocclusive reactive hyperaemia (PORH). METHODS Microvascular autoregulation was assessed in 58 children with type 1 diabetes and 58 age- and sex-matched healthy controls by PORH using laser Doppler fluxmetry. Baseline perfusion, biological zero (defined as a 'no flow' laser Doppler signal during suprasystolic occlusion), peak perfusion following occlusion, time to peak and recovery time (time until baseline perfusion is resumed) were recorded and compared between the groups. RESULTS Peak perfusion was higher in children with type 1 diabetes than in healthy controls (1.7 ± 0.93 AU [arbitrary units] vs 1.29 ± 0.46 AU; p = 0.004), and biological zero was lower in children with type 1 diabetes vs controls (0.14 ± 0.04 AU vs 0.19 ± 0.04 AU; p < 0.0001). No differences were seen between the groups in baseline perfusion, time to peak during PORH and recovery time following PORH. CONCLUSIONS/INTERPRETATION PORH reveals impaired microvascular autoregulation in children with type 1 diabetes. The higher peak perfusion might reflect a decline in the vasoconstrictive ability of arteriolar smooth muscle cells upstream of capillary beds in children with type 1 diabetes.
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Affiliation(s)
- O Schlager
- Department of Medicine II, Division of Angiology, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria
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27
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Montero D, Walther G, Perez-Martin A, Roche E, Vinet A. Endothelial dysfunction, inflammation, and oxidative stress in obese children and adolescents: markers and effect of lifestyle intervention. Obes Rev 2012; 13:441-55. [PMID: 22133012 DOI: 10.1111/j.1467-789x.2011.00956.x] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
With an increasing prevalence, pediatric obesity is often a prelude to adulthood obesity, and represents a major public health issue. Comorbidities are very common and severe in obese adults, justifying the search for earlier markers or risk factors for cardiovascular diseases in obese children. Endothelial dysfunction has been found to be present in the early stages of atherosclerosis, and can be non-invasively assessed with widely accepted and well-standardized techniques at the macrocirculation level. Endothelial dysfunction at the microcirculation level is less documented in obese children. Obesity in children has been repeatedly and independently correlated to endothelial dysfunction, inflammation and oxidative stress markers, although the relationship between these factors remains to be investigated. However, this would not only allow substantial improvements in risk stratification, but also provide essential data regarding the evolution of endothelial dysfunction in childhood obesity, especially during puberty when pro-inflammatory and pro-oxidative changes, with relative insulin resistance, occur. Therapeutic strategies such as lifestyle interventions in early childhood obesity appear all the more necessary, optimally including both exercise and diet because of their known effects on inflammatory and oxidative stress markers, potentially reversing endothelial dysfunction.
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Affiliation(s)
- D Montero
- Pharm-Ecology Cardiovascular Laboratory, Faculty of Sciences, Avignon, France
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