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Garcia MM, Corrales P, Huerta MÁ, Czachorowski MJ, López-Miranda V, Medina-Gómez G, Cobos EJ, Goicoechea C, Molina-Álvarez M. Adults with excess weight or obesity, but not with overweight, report greater pain intensities than individuals with normal weight: a systematic review and meta-analysis. Front Endocrinol (Lausanne) 2024; 15:1340465. [PMID: 38510698 PMCID: PMC10950917 DOI: 10.3389/fendo.2024.1340465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 02/19/2024] [Indexed: 03/22/2024] Open
Abstract
Context Over 1.9 billion adult people have overweight or obesity. Considered as a chronic disease itself, obesity is associated with several comorbidities. Chronic pain affects approximately 60 million people and its connection with obesity has been displayed in several studies. However, controversial results showing both lower and higher pain thresholds in subjects with obesity compared to individuals with normal weight and the different parameters used to define such association (e.g., pain severity, frequency or duration) make it hard to draw straight forward conclusions in the matter. The objective of this article is to examine the relationship between overweight and obesity (classified with BMI as recommended by WHO) and self-perceived pain intensity in adults. Methods A literature search was conducted following PRISMA guidelines using the databases CINAHL, Cochrane Library, EMBASE, PEDro, PubMed, Scopus and Web of Science to identify original studies that provide BMI values and their associated pain intensity assessed by self-report scales. Self-report pain scores were normalized and pooled within meta-analyses. The Cochrane's Q test and I2 index were used to clarify the amount of heterogeneity; meta-regression was performed to explore the relationship between each outcome and the risk of bias. Results Of 2194 studies, 31 eligible studies were identified and appraised, 22 of which provided data for a quantitative analysis. The results herein suggested that adults with excess weight (BMI ≥ 25.0) or obesity (BMI ≥ 30.0) but not with overweight (pre-obesity) alone (BMI 25.0-29.9), are more likely to report greater intensities of pain than individuals of normal weight (BMI 18.5-24.9). Subgroup analyses regarding the pathology of the patients showed no statistically significant differences between groups. Also, influence of age in the effect size, evaluated by meta-regression, was only observed in one of the four analyses. Furthermore, the robustness of the findings was supported by two different sensitivity analyses. Conclusion Subjects with obesity and excess weight, but not overweight, reported greater pain intensities than individuals with normal weight. This finding encourages treatment of obesity as a component of pain management. More research is required to better understand the mechanisms of these differences and the clinical utility of the findings. Systematic Review Registration https://doi.org/10.17605/OSF.IO/RF2G3, identifier OSF.IO/RF2G3.
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Affiliation(s)
- Miguel M. Garcia
- Area of Pharmacology, Nutrition and Bromatology, Department of Basic Health Sciences, Universidad Rey Juan Carlos, Unidad Asociada de I+D+i al Instituto de Química Médica (IQM) CSIC-URJC, Alcorcón, Spain
- High Performance Experimental Pharmacology Research Group, Universidad Rey Juan Carlos (PHARMAKOM), Alcorcón, Spain
- Grupo Multidisciplinar de Investigación y Tratamiento del Dolor (i+DOL), Alcorcón, Spain
| | - Patricia Corrales
- Area of Biochemistry, Department of Basic Health Sciences, Universidad Rey Juan Carlos, Alcorcón, Spain
- High Performance Research Group in the Study of the Molecular Mechanisms of Glucolipotoxicity and Insulin Resistance: Implications in Obesity, Diabetes and Metabolic Syndrome, Universidad Rey Juan Carlos (LIPOBETA), Alcorcón, Spain
- Consolidated Research Group on Obesity and Type 2 Diabetes: Adipose Tissue Biology (BIOFAT), Universidad Rey Juan Carlos, Alcorcón, Spain
| | - Miguel Á. Huerta
- Department of Pharmacology and Neurosciences Institute (Biomedical Research Center), Universidad de Granada, Granada, Spain
- Biosanitary Research Institute ibs.GRANADA, Granada, Spain
| | | | - Visitación López-Miranda
- Area of Pharmacology, Nutrition and Bromatology, Department of Basic Health Sciences, Universidad Rey Juan Carlos, Unidad Asociada de I+D+i al Instituto de Química Médica (IQM) CSIC-URJC, Alcorcón, Spain
- High Performance Experimental Pharmacology Research Group, Universidad Rey Juan Carlos (PHARMAKOM), Alcorcón, Spain
- Grupo Multidisciplinar de Investigación y Tratamiento del Dolor (i+DOL), Alcorcón, Spain
| | - Gema Medina-Gómez
- Area of Biochemistry, Department of Basic Health Sciences, Universidad Rey Juan Carlos, Alcorcón, Spain
- High Performance Research Group in the Study of the Molecular Mechanisms of Glucolipotoxicity and Insulin Resistance: Implications in Obesity, Diabetes and Metabolic Syndrome, Universidad Rey Juan Carlos (LIPOBETA), Alcorcón, Spain
| | - Enrique J. Cobos
- Department of Pharmacology and Neurosciences Institute (Biomedical Research Center), Universidad de Granada, Granada, Spain
- Biosanitary Research Institute ibs.GRANADA, Granada, Spain
- Teófilo Hernando Institute for Drug Discovery, Madrid, Spain
| | - Carlos Goicoechea
- Area of Pharmacology, Nutrition and Bromatology, Department of Basic Health Sciences, Universidad Rey Juan Carlos, Unidad Asociada de I+D+i al Instituto de Química Médica (IQM) CSIC-URJC, Alcorcón, Spain
- High Performance Experimental Pharmacology Research Group, Universidad Rey Juan Carlos (PHARMAKOM), Alcorcón, Spain
- Grupo Multidisciplinar de Investigación y Tratamiento del Dolor (i+DOL), Alcorcón, Spain
| | - Miguel Molina-Álvarez
- Area of Pharmacology, Nutrition and Bromatology, Department of Basic Health Sciences, Universidad Rey Juan Carlos, Unidad Asociada de I+D+i al Instituto de Química Médica (IQM) CSIC-URJC, Alcorcón, Spain
- High Performance Experimental Pharmacology Research Group, Universidad Rey Juan Carlos (PHARMAKOM), Alcorcón, Spain
- Grupo Multidisciplinar de Investigación y Tratamiento del Dolor (i+DOL), Alcorcón, Spain
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Strong AL, Tvina A, Harrison RK, Watkins J, Afreen E, Tsaih SW, Palatnik A. The association of obesity with post-cesarean inpatient opioid consumption. Int J Obes (Lond) 2024; 48:370-375. [PMID: 38057478 DOI: 10.1038/s41366-023-01424-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 11/10/2023] [Accepted: 11/22/2023] [Indexed: 12/08/2023]
Abstract
BACKGROUND Obesity and prescription opioid misuse are important public health concerns in the United States. A common intersection occurs when women with obesity undergo cesarean birth and receive narcotic medications for postpartum pain. OBJECTIVE To examine the association between obesity and inpatient opioid use after cesarean birth. METHODS A retrospective cohort study of patients that underwent cesarean birth in 2015-2018. Primary outcome was post-cesarean delivery opioid consumption starting 24 h after delivery measured as morphine milliequivalents per hour (MME/h). Secondary outcome was MME/h consumption in the highest quartile of all subjects. Opioid consumption was compared between three BMI groups: non-obese BMI 18.5-29.9 kg/m2; obese BMI 30.0-39.9 kg/m2; and morbidly obese BMI ≥ 40.0 kg/m2 using univariable and multivariable analyses. RESULTS Of 1620 patients meeting inclusion criteria, 496 (30.6%) were in the non-obese group, 753 (46.5%) were in the obese group, and 371 (22.9%) were in the morbidly obese group. In the univariate analysis, patients with obesity and morbid obesity required higher MME/h than patients in the non-obese group [1.3 MME/h (IQR 0.1, 2.4) vs. 1.6 MME/h (IQR 0.5, 2.8) vs. 1.8 MME/h (IQR 0.8, 2.9), for non-obese, obese, and morbidly obese groups respectively, p < 0.001]. In the multivariable analysis, this association did not persist. In contrast, subjects in the obese and morbidly obese groups were more likely to be in the highest quartile of MME/h opioid consumption compared with those in the non-obese group (23.5% vs. 48.1% vs. 28.4%, p < 0.001, respectively); with aOR 1.42 (95% CI 1.07-1.89, p = 0.016) and aOR 1.60 (95% CI 1.16-2.22, p = 0.005) for patients with obesity and morbid obesity, respectively. CONCLUSION Maternal obesity was not associated with higher hourly MME consumption during inpatient stay after cesarean birth. However, patients with obesity and morbid obesity were significantly more likely to be in the top quartile of MME hourly consumption.
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Affiliation(s)
- Abigail L Strong
- Department of Obstetrics and Gynecology at Medical College of Wisconsin, Milwaukee, WI, USA
| | - Alina Tvina
- Department of Obstetrics and Gynecology at Medical College of Wisconsin, Milwaukee, WI, USA.
| | - Rachel K Harrison
- Department of Obstetrics and Gynecology at Medical College of Wisconsin, Milwaukee, WI, USA
- Advocate Medical Group Department of Maternal-Fetal Medicine, 4400 W. 95th St, Suite 207, Oak Lawn, IL, 60453, USA
| | - Jayla Watkins
- Department of Obstetrics and Gynecology at Medical College of Wisconsin, Milwaukee, WI, USA
| | - Esha Afreen
- Department of Obstetrics and Gynecology at Medical College of Wisconsin, Milwaukee, WI, USA
| | - Shirng-Wern Tsaih
- Department of Obstetrics and Gynecology at Medical College of Wisconsin, Milwaukee, WI, USA
| | - Anna Palatnik
- Department of Obstetrics and Gynecology at Medical College of Wisconsin, Milwaukee, WI, USA
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Qiu Y, Wei X, Tao Y, Song B, Wang M, Yin Z, Xie M, Duan A, Chen Z, Wang Z. Causal association of leisure sedentary behavior and cervical spondylosis, sciatica, intervertebral disk disorders, and low back pain: a Mendelian randomization study. Front Public Health 2024; 12:1284594. [PMID: 38322127 PMCID: PMC10844448 DOI: 10.3389/fpubh.2024.1284594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 01/08/2024] [Indexed: 02/08/2024] Open
Abstract
Background Some studies suggest sedentary behavior is a risk factor for musculoskeletal disorders. This study aimed to investigate the potential causal association between leisure sedentary behavior (LSB) (including television (TV) viewing, computer use, and driving) and the incidence of sciatica, intervertebral disk degeneration (IVDD), low back pain (LBP), and cervical spondylosis (CS). Methods We obtained the data of LSB, CS, IVDD, LBP, sciatica and proposed mediators from the gene-wide association studies (GWAS). The causal effects were examined by Inverse Variance Weighted (IVW) test, MR-Egger, weighted median, weighted mode and simple mode. And sensitivity analysis was performed using MR-Pleiotropy Residual Sum and Outlier (MR-PRESSO) and MR-Egger intercept test. Multivariable MR (MVMR) was conducted to investigate the independent factor of other LSB; while two-step MR analysis was used to explore the potential mediators including Body mass index (BMI), smoking initiation, type 2 diabetes mellitus (T2DM), major depressive disorder (MDD), schizophrenia, bipolar disorder between the causal association of LSB and these diseases based on previous studies. Results Genetically associated TV viewing was positively associated with the risk of CS (OR = 1.61, 95%CI = 1.25 to 2.07, p = 0.002), IVDD (OR = 2.10, 95%CI = 1.77 to 2.48, p = 3.79 × 10-18), LBP (OR = 1.84, 95%CI = 1.53 to 2.21, p = 1.04 × 10-10) and sciatica (OR = 1.82, 95% CI = 1.45 to 2.27, p = 1.42 × 10-7). While computer use was associated with a reduced risk of IVDD (OR = 0.66, 95%CI = 0.55 to 0.79, p = 8.06 × 10-6), LBP (OR = 0.49, 95%CI = 0.40 to 0.59, p = 2.68 × 10-13) and sciatica (OR = 0.58, 95%CI = 0.46 to 0.75, p = 1.98 × 10-5). Sensitivity analysis validated the robustness of MR outcomes. MVMR analysis showed that the causal effect of TV viewing on IVDD (OR = 1.59, 95%CI = 1.13 to 2.25, p = 0.008), LBP (OR = 2.15, 95%CI = 1.50 to 3.08, p = 3.38 × 10-5), and sciatica (OR = 1.61, 95%CI = 1.03 to 2.52, p = 0.037) was independent of other LSB. Furthermore, two-step MR analysis indicated that BMI, smoking initiation, T2DM may mediate the causal effect of TV viewing on these diseases. Conclusion This study provides empirical evidence supporting a positive causal association between TV viewing and sciatica, IVDD and LBP, which were potentially mediated by BMI, smoking initiation and T2DM.
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Affiliation(s)
- Youjia Qiu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Xingzhou Wei
- Suzhou Medical School of Soochow University, Suzhou, Jiangsu, China
| | - Yuchen Tao
- Suzhou Medical School of Soochow University, Suzhou, Jiangsu, China
| | - Bingyi Song
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Menghan Wang
- Suzhou Medical School of Soochow University, Suzhou, Jiangsu, China
| | - Ziqian Yin
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Minjia Xie
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Aojie Duan
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Zhouqing Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Zhong Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
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Li J, Chongpison Y, Amornvit J, Chaikittisilpa S, Santibenchakul S, Jaisamrarn U. Association of reproductive factors and exogenous hormone use with distal sensory polyneuropathy among postmenopausal women in the United States: results from 1999 to 2004 NHANES. Sci Rep 2023; 13:9274. [PMID: 37286578 DOI: 10.1038/s41598-023-35934-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 05/25/2023] [Indexed: 06/09/2023] Open
Abstract
Postmenopausal status is a risk factor for distal sensory polyneuropathy-the most common type of peripheral neuropathy. We aimed to investigate associations between reproductive factors and history of exogenous hormone use with distal sensory polyneuropathy among postmenopausal women in the United States using data from the National Health and Nutrition Examination Survey 1999-2004, and to explore the modifying effects of ethnicity on these associations. We conducted a cross-sectional study among postmenopausal women aged ≥ 40 years. Women with a history of diabetes, stroke, cancer, cardiovascular disease, thyroid disease, liver disease, weak or failing kidneys, or amputation were excluded. Distal sensory polyneuropathy was measured using a 10-g monofilament test, and a questionnaire was used to collect data on reproductive history. Multivariable survey logistic regression was used to test the association between reproductive history variables and distal sensory polyneuropathy. In total, 1144 postmenopausal women aged ≥ 40 years were included. The adjusted odds ratios were 8.13 [95% confidence interval (CI) 1.24-53.28] and 3.18 (95% CI 1.32-7.68) for age at menarche < 11 years and time since menopause > 20 years, respectively, which were positively associated with distal sensory polyneuropathy; adjusted odds ratios were 0.45 for the history of breastfeeding (95% CI 0.21-0.99) and 0.41 for exogenous hormone use (95% CI 0.19-0.87) were negatively associated. Subgroup analysis revealed ethnicity-based heterogeneity in these associations. Age at menarche, time since menopause, breastfeeding, and exogenous hormone use were associated with distal sensory polyneuropathy. Ethnicity significantly modified these associations.
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Affiliation(s)
- Jiayu Li
- Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Yuda Chongpison
- Center of Excellence in Biostatistics, Research Affairs, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
- The Skin and Allergy Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
| | - Jakkrit Amornvit
- Division of Neurology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
| | - Sukanya Chaikittisilpa
- Menopause Research Group, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Somsook Santibenchakul
- Family Planning and Reproductive Health Unit, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Rama 4 Road, Bangkok, 10330, Thailand.
| | - Unnop Jaisamrarn
- Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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Li J, Santibenchakul S, Chongpison Y, Amornvit J, Chaikittisilpa S, Jaisamrarn U. Association Between Breastfeeding and Reduced Distal Sensory Polyneuropathy in Postmenopausal Women Aged 40-70 Years: Analysis of Data from the 1999-2004 National Health and Nutrition Examination Survey. Breastfeed Med 2023; 18:59-65. [PMID: 36576797 PMCID: PMC9889012 DOI: 10.1089/bfm.2022.0228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Background: Distal sensory polyneuropathy (DSP) is a common peripheral neuropathy subtype. We aimed to determine the association between breastfeeding and DSP among postmenopausal women aged 40-70 years, and the effect modification of obesity on this association. Methods: A cross-sectional study was conducted using data from the National Health and Nutrition Examination Survey 1999-2004. Postmenopausal women aged 40-70 years were included. Women with diabetes, stroke, cancer, cardiovascular disease, thyroid disease, liver disease, weak/failing kidneys, or amputation were excluded. Binary logistic regression was used to analyze the association between breastfeeding and DSP. Results: Among 798 participants, 386 (44.30%) reported breastfeeding history and 51 (5.29%) were defined as having DSP using the monofilament test. A significant inverse association was observed between breastfeeding and DSP (odds ratio [OR] = 0.29; 95% confidence interval [CI]: 0.11-0.79; p = 0.017) after adjusting for other confounding variables. In subgroup analysis, this adjusted association was observed only in the obese group (OR = 0.21; 95% CI: 0.06-0.73, p = 0.013). Conclusions: Breastfeeding was found to have potential benefits in the presence of DSP in postmenopausal women aged 40-70 years, and obesity modified the association between breastfeeding and DSP. Promoting breastfeeding may reduce the burden of peripheral neuropathy in middle-aged postmenopausal women.
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Affiliation(s)
- Jiayu Li
- Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Somsook Santibenchakul
- Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Yuda Chongpison
- Center of Excellence in Biostatistics, Research Affairs, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,The Skin and Allergy Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Jakkrit Amornvit
- Division of Neurology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
| | - Sukanya Chaikittisilpa
- Menopause Research Group, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Unnop Jaisamrarn
- Menopause Research Group, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
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Villaseñor-Moreno JC, Aranda-Moreno C, Figueroa-Padilla I, Giraldez-Fernández ME, Gresty MA, Jáuregui-Renaud K. Individual Cofactors and Multisensory Contributions to the Postural Sway of Adults with Diabetes. Brain Sci 2022; 12:1489. [PMID: 36358415 PMCID: PMC9688443 DOI: 10.3390/brainsci12111489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 10/20/2023] Open
Abstract
To assess the interactions between individual cofactors and multisensory inputs on the postural sway of adults with type 2 diabetes and healthy subjects, 69 adults accepted to participate in the study (48 with/ 21 without diabetes). Assessments included neuro-otology (sinusoidal-rotation and unilateral-centrifugation), ophthalmology and physiatry evaluations, body mass index (BMI), physical activity, quadriceps strength, the ankle/brachial index and polypharmacy. Postural sway was recorded on hard/soft surface, either with eyes open/closed, or without/with 30° neck extension. The proportional differences from the baseline of each condition were analyzed using Multivariate and Multivariable analyses. Patients with polyneuropathy and no retinopathy showed visual dependence, while those with polyneuropathy and retinopathy showed adaptation. Across sensory challenges, the vestibulo-ocular gain at 1.28 Hz and the BMI were mainly related to changes in sway area, while the dynamic visual vertical was mainly related to changes in sway length. The ankle/brachial index was related to the effect of neck extension, with contributions from quadriceps strength/physical activity, polyneuropathy and polypharmacy. Across conditions, men showed less sway than women did. In conclusion, in adults with diabetes, sensory inputs and individual cofactors differently contribute to postural stability according to context. Rehabilitation programs for adults with diabetes may require an individualized approach.
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Affiliation(s)
- Julio César Villaseñor-Moreno
- Unidad de Investigación Médica en Otoneurología, Instituto Mexicano del Seguro Social, Ciudad de Mexico 06720, Mexico
| | - Catalina Aranda-Moreno
- Unidad de Investigación Médica en Otoneurología, Instituto Mexicano del Seguro Social, Ciudad de Mexico 06720, Mexico
| | | | | | - Michael A. Gresty
- Neuro-otology Unit, Imperial College London, Charing Cross Hospital, London W6 8RF, UK
| | - Kathrine Jáuregui-Renaud
- Unidad de Investigación Médica en Otoneurología, Instituto Mexicano del Seguro Social, Ciudad de Mexico 06720, Mexico
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Lim JZM, Burgess J, Ooi CG, Ponirakis G, Malik RA, Wilding JPH, Alam U. The Peripheral Neuropathy Prevalence and Characteristics Are Comparable in People with Obesity and Long-Duration Type 1 Diabetes. Adv Ther 2022; 39:4218-4229. [PMID: 35867275 PMCID: PMC9402741 DOI: 10.1007/s12325-022-02208-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 05/26/2022] [Indexed: 12/02/2022]
Abstract
Introduction Peripheral neuropathy is reported in obesity even in the absence of hyperglycaemia. Objective To compare the prevalence and characterise the phenotype of peripheral neuropathy in people living with obesity (OB) and long-duration type 1 diabetes (T1D). Patients and Methods We performed a prospective cross-sectional study of 130 participants including healthy volunteers (HV) (n = 28), people with T1D (n = 51), and OB (BMI 30–50 kg/m2) (n = 51). Participants underwent assessment of neuropathic symptoms (Neuropathy Symptom Profile, NSP), neurological deficits (Neuropathy Disability Score, NDS), vibration perception threshold (VPT) and evaluation of sural nerve conduction velocity and amplitude. Results Peripheral neuropathy was present in 43.1% of people with T1D (age 49.9 ± 12.9 years; duration of diabetes 23.4 ± 13.5 years) and 33.3% of OB (age 48.2 ± 10.8 years). VPT for high risk of neuropathic foot ulceration (VPT ≥ 25 V) was present in 31.4% of T1D and 19.6% of OB. Participants living with OB were heavier (BMI 42.9 ± 3.5 kg/m2) and had greater centripetal adiposity with an increased body fat percentage (FM%) (P < 0.001) and waist circumference (WC) (P < 0.001) compared to T1D. The OB group had a higher NDS (P < 0.001), VAS for pain (P < 0.001), NSP (P < 0.001), VPT (P < 0.001) and reduced sural nerve conduction velocity (P < 0.001) and amplitude (P < 0.001) compared to HV, but these parameters were comparable in T1D. VPT was positively associated with increased WC (P = 0.011), FM% (P = 0.001) and HbA1c (P < 0.001) after adjusting for age (R2 = 0.547). Subgroup analysis of respiratory quotient (RQ) measured in the OB group did not correlate with VPT (P = 0.788), nerve conduction velocity (P = 0.743) or amplitude (P = 0.677). Conclusion The characteristics of peripheral neuropathy were comparable between normoglycaemic people living with obesity and people with long-duration T1D, suggesting that metabolic factors linked to obesity play a pivotal role in the development of peripheral neuropathy. Further studies are needed to investigate the mechanistic link between visceral adiposity and neuropathy. Supplementary Information The online version contains supplementary material available at 10.1007/s12325-022-02208-z.
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Affiliation(s)
- J Z M Lim
- Department of Cardiovascular and Metabolic Medicine, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.,Division of Diabetes and Endocrinology, Aintree University Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - J Burgess
- Department of Cardiovascular and Metabolic Medicine, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
| | - C G Ooi
- Division of Diabetes and Endocrinology, Aintree University Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - G Ponirakis
- Division of Medicine, Qatar Foundation, Weill Cornell Medicine-Qatar, Doha, Qatar
| | - R A Malik
- Division of Medicine, Qatar Foundation, Weill Cornell Medicine-Qatar, Doha, Qatar
| | - J P H Wilding
- Department of Cardiovascular and Metabolic Medicine, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.,Division of Diabetes and Endocrinology, Aintree University Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Uazman Alam
- Department of Cardiovascular and Metabolic Medicine, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK. .,Division of Diabetes and Endocrinology, Aintree University Hospital, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK. .,Department of Diabetes, Endocrinology and Gastroenterology, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
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8
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Ekman L, Pourhamidi K, Englund E, Lagali N, Rolandsson O, Dahlin LB. Temporal trend of small nerve fibre degeneration in people with and without type 2 diabetes mellitus. Diabet Med 2022; 39:e14691. [PMID: 34536243 DOI: 10.1111/dme.14691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 09/02/2021] [Accepted: 09/14/2021] [Indexed: 11/28/2022]
Abstract
AIMS We investigated the long-term temporal trend of intraepidermal nerve fibre density (IENFD) and the association between changes in IENFD and metabolic factors in individuals with and without type 2 diabetes. METHODS A total of 66 participants were enrolled in this longitudinal population-based study, at baseline consisting of 35 individuals (median 61 years) without diabetes and 31 individuals with type 2 diabetes mellitus. Participants underwent clinical and electrophysiological examinations, as well as a skin biopsy both at baseline and at the follow-up visit (mean 8.1 ± 0.5 years). IENFD was assessed in thin sections of 5 μm, stained with the protein gene product 9.5-antibody and compared between the groups. RESULTS IENFD decreased during the period in both groups, with a greater decline in the group without diabetes than in type 2 diabetes (-2.3 and -0.6 fibres/mm respectively; p < 0.001). While IENFD at baseline was significantly reduced in type 2 diabetes relative to people without (p < 0.001), no difference in IENFD was found between groups at the follow-up (p = 0.183). Linear mixed model analysis indicated that age, weight and HbA1c were associated with decrease in IENFD in the total population (p < 0.007). IENFD also decreased with increasing age and weight, but not with HbA1c , in the separate groups (p < 0.049). CONCLUSIONS Despite lower IENFD levels at baseline in type 2 diabetes, IENFD was equal between the groups at follow-up. A decrease in IENFD is to a limited extent affected by body weight, and HbA1c , but age seems to be the long-term determinant of IENFD in an elderly population.
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Affiliation(s)
- Linnéa Ekman
- Department of Translational Medicine, Hand Surgery, Lund University, Malmö, Sweden
| | - Kaveh Pourhamidi
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Elisabet Englund
- Department of Clinical Sciences, Pathology, Lund University, Lund, Sweden
| | - Neil Lagali
- Department of Biomedical and Clinical Sciences, Faculty of Medicine, Linköping University, Linköping, Sweden
| | - Olov Rolandsson
- Department of Public Health and Clinical Medicine, Family Medicine, Umeå University, Umeå, Sweden
| | - Lars B Dahlin
- Department of Translational Medicine, Hand Surgery, Lund University, Malmö, Sweden
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9
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Yorek M. Treatment for Diabetic Peripheral Neuropathy: What have we Learned from Animal Models? Curr Diabetes Rev 2022; 18:e040521193121. [PMID: 33949936 PMCID: PMC8965779 DOI: 10.2174/1573399817666210504101609] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 01/07/2021] [Accepted: 02/13/2021] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Animal models have been widely used to investigate the etiology and potential treatments for diabetic peripheral neuropathy. What we have learned from these studies and the extent to which this information has been adapted for the human condition will be the subject of this review article. METHODS A comprehensive search of the PubMed database was performed, and relevant articles on the topic were included in this review. RESULTS Extensive study of diabetic animal models has shown that the etiology of diabetic peripheral neuropathy is complex, with multiple mechanisms affecting neurons, Schwann cells, and the microvasculature, which contribute to the phenotypic nature of this most common complication of diabetes. Moreover, animal studies have demonstrated that the mechanisms related to peripheral neuropathy occurring in type 1 and type 2 diabetes are likely different, with hyperglycemia being the primary factor for neuropathology in type 1 diabetes, which contributes to a lesser extent in type 2 diabetes, whereas insulin resistance, hyperlipidemia, and other factors may have a greater role. Two of the earliest mechanisms described from animal studies as a cause for diabetic peripheral neuropathy were the activation of the aldose reductase pathway and increased non-enzymatic glycation. However, continuing research has identified numerous other potential factors that may contribute to diabetic peripheral neuropathy, including oxidative and inflammatory stress, dysregulation of protein kinase C and hexosamine pathways, and decreased neurotrophic support. In addition, recent studies have demonstrated that peripheral neuropathy-like symptoms are present in animal models, representing pre-diabetes in the absence of hyperglycemia. CONCLUSION This complexity complicates the successful treatment of diabetic peripheral neuropathy, and results in the poor outcome of translating successful treatments from animal studies to human clinical trials.
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Affiliation(s)
- Mark Yorek
- Department of Internal Medicine, University of Iowa, Iowa City, IA, 52242 USA
- Department of Veterans Affairs Iowa City Health Care System, Iowa City, IA, 52246 USA
- Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA, 52242 USA
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10
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Verdú E, Homs J, Boadas-Vaello P. Physiological Changes and Pathological Pain Associated with Sedentary Lifestyle-Induced Body Systems Fat Accumulation and Their Modulation by Physical Exercise. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182413333. [PMID: 34948944 PMCID: PMC8705491 DOI: 10.3390/ijerph182413333] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 12/02/2021] [Accepted: 12/10/2021] [Indexed: 12/11/2022]
Abstract
A sedentary lifestyle is associated with overweight/obesity, which involves excessive fat body accumulation, triggering structural and functional changes in tissues, organs, and body systems. Research shows that this fat accumulation is responsible for several comorbidities, including cardiovascular, gastrointestinal, and metabolic dysfunctions, as well as pathological pain behaviors. These health concerns are related to the crosstalk between adipose tissue and body systems, leading to pathophysiological changes to the latter. To deal with these health issues, it has been suggested that physical exercise may reverse part of these obesity-related pathologies by modulating the cross talk between the adipose tissue and body systems. In this context, this review was carried out to provide knowledge about (i) the structural and functional changes in tissues, organs, and body systems from accumulation of fat in obesity, emphasizing the crosstalk between fat and body tissues; (ii) the crosstalk between fat and body tissues triggering pain; and (iii) the effects of physical exercise on body tissues and organs in obese and non-obese subjects, and their impact on pathological pain. This information may help one to better understand this crosstalk and the factors involved, and it could be useful in designing more specific training interventions (according to the nature of the comorbidity).
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Affiliation(s)
- Enrique Verdú
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, 17003 Girona, Spain;
- Correspondence: (E.V.); (P.B.-V.)
| | - Judit Homs
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, 17003 Girona, Spain;
- Department of Physical Therapy, EUSES-University of Girona, 17190 Salt, Spain
| | - Pere Boadas-Vaello
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, 17003 Girona, Spain;
- Correspondence: (E.V.); (P.B.-V.)
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11
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Abstract
Facial emotion recognition (FER) is extensively investigated in psychological sciences in healthy individuals and clinical conditions. In this paper, we analyzed those studies in which FER was assessed in the case of obesity or fibromyalgia, in relation to the levels of alexithymia. Crucially, these two conditions frequently co-occur; however, no study has explored FER considering both fibromyalgia and obesity. Studies were identified using the electronic search engine of PubMed. The last research was run on 23 July 2021. Two independent lists were generated for the two clinical conditions. Six records were reviewed about obesity, while three records about fibromyalgia. The evidence relative to FER in obesity was not conclusive, whereas the evidence about an altered FER in fibromyalgia seemed more straightforward. Moreover, the role of alexithymia on FER in these clinical conditions was not extensively investigated. In our discussion, we highlighted those factors that should be carefully addressed in investigating FER in these clinical conditions. Moreover, we underlined methodological criticisms that should be overcome in future research.
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12
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Baum P, Toyka KV, Blüher M, Kosacka J, Nowicki M. Inflammatory Mechanisms in the Pathophysiology of Diabetic Peripheral Neuropathy (DN)-New Aspects. Int J Mol Sci 2021; 22:10835. [PMID: 34639176 PMCID: PMC8509236 DOI: 10.3390/ijms221910835] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/30/2021] [Accepted: 10/04/2021] [Indexed: 12/15/2022] Open
Abstract
The pathogenesis of diabetic neuropathy is complex, and various pathogenic pathways have been proposed. A better understanding of the pathophysiology is warranted for developing novel therapeutic strategies. Here, we summarize recent evidence from experiments using animal models of type 1 and type 2 diabetes showing that low-grade intraneural inflammation is a facet of diabetic neuropathy. Our experimental data suggest that these mild inflammatory processes are a likely common terminal pathway in diabetic neuropathy associated with the degeneration of intraepidermal nerve fibers. In contrast to earlier reports claiming toxic effects of high-iron content, we found the opposite, i.e., nutritional iron deficiency caused low-grade inflammation and fiber degeneration while in normal or high non-heme iron nutrition no or only extremely mild inflammatory signs were identified in nerve tissue. Obesity and dyslipidemia also appear to trigger mild inflammation of peripheral nerves, associated with neuropathy even in the absence of overt diabetes mellitus. Our finding may be the experimental analog of recent observations identifying systemic proinflammatory activity in human sensorimotor diabetic neuropathy. In a rat model of type 1 diabetes, a mild neuropathy with inflammatory components could be induced by insulin treatment causing an abrupt reduction in HbA1c. This is in line with observations in patients with severe diabetes developing a small fiber neuropathy upon treatment-induced rapid HbA1c reduction. If the inflammatory pathogenesis could be further substantiated by data from human tissues and intervention studies, anti-inflammatory compounds with different modes of action may become candidates for the treatment or prevention of diabetic neuropathy.
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Affiliation(s)
- Petra Baum
- Department of Neurology, University of Leipzig, Liebigstraße 20, D-04103 Leipzig, Germany;
| | - Klaus V. Toyka
- Department of Neurology, University of Würzburg, Josef-Schneider-Str. 11, D-97080 Würzburg, Germany;
| | - Matthias Blüher
- Department of Medicine, University of Leipzig, Liebigstraße 20, D-04103 Leipzig, Germany;
| | - Joanna Kosacka
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University of Leipzig, D-04103 Leipzig, Germany;
| | - Marcin Nowicki
- Institute of Anatomy, University of Leipzig, Liebigstraße 13, D-04103 Leipzig, Germany
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13
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Pain sensitivity does not differ between obese and healthy weight individuals. Pain Rep 2021; 6:e942. [PMID: 34514273 PMCID: PMC8423383 DOI: 10.1097/pr9.0000000000000942] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/24/2021] [Accepted: 05/25/2021] [Indexed: 12/19/2022] Open
Abstract
Introduction There is emerging evidence suggesting a relationship between obesity and chronic pain. Objectives The aim of this study was to determine whether pain-free obese individuals display altered pain responses to acute noxious stimuli, thus raising the possibility of greater pain sensitivity and potential susceptibility for chronic pain development. Methods Psychophysical and anthropometric data were collected from 38 individuals with an obese body mass index (BMI) classification (BMI ≥ 30) and 41 age/sex-matched individuals of a healthy BMI (BMI < 24.9). Because BMI may be an inaccurate index of obesity, additional anthropometric parameters of central adiposity and percent body fat were examined. Pain responses to suprathreshold noxious heat and cold stimuli were examined. Subjects provided pain intensity and unpleasantness ratings to noxious heat (49°C) applied at varying durations and locations (ventral forearm/lower leg). Cold pain ratings, thresholds, and tolerances were obtained after immersion of the hand in a cold-water bath (0-2°C). Between-group differences in pain responses, as well as relationships between pain responses and obesity parameters, were examined. Importantly, confounds that may influence pain such as anxiety, depression, impulsivity, sleepiness, and quality of life were assessed. Results No between-group differences in pain sensitivity to noxious heat and cold stimuli were found. No relationships were found between central adiposity or body fat (percentage or distribution) and pain responses to noxious heat or cold stimuli. Conclusions Obesity has minimal influence on pain sensitivity. Accordingly, it is unlikely that obesity alone increases susceptibility for chronic pain development through amplification of nociceptive processes.
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14
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Azmi S, Ferdousi M, Liu Y, Adam S, Siahmansur T, Ponirakis G, Marshall A, Petropoulos IN, Ho JH, Syed AA, Gibson JM, Ammori BJ, Durrington PN, Malik RA, Soran H. The role of abnormalities of lipoproteins and HDL functionality in small fibre dysfunction in people with severe obesity. Sci Rep 2021; 11:12573. [PMID: 34131170 PMCID: PMC8206256 DOI: 10.1038/s41598-021-90346-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 04/08/2021] [Indexed: 12/13/2022] Open
Abstract
Obesity and associated dyslipidemia may contribute to increased cardiovascular disease. Obesity has also been associated with neuropathy. We have investigated presence of peripheral nerve damage in patients with severe obesity without type 2 diabetes and the status of metabolic syndrome and lipoprotein abnormalities. 47participants with severe obesity and 30 age-matched healthy controls underwent detailed phenotyping of neuropathy and an assessment of lipoproteins and HDL-functionality. Participants with severe obesity had a higher neuropathy symptom profile, lower sural and peroneal nerve amplitudes, abnormal thermal thresholds, heart rate variability with deep breathing and corneal nerve parameters compared to healthy controls. Circulating apolipoprotein A1 (P = 0.009), HDL cholesterol (HDL-C) (P < 0.0001), cholesterol efflux (P = 0.002) and paroxonase-1 (PON-1) activity (P < 0.0001) were lower, and serum amyloid A (SAA) (P < 0.0001) was higher in participants with obesity compared to controls. Obese participants with small nerve fibre damage had higher serum triglycerides (P = 0.02), lower PON-1 activity (P = 0.002) and higher prevalence of metabolic syndrome (58% vs. 23%, P = 0.02) compared to those without. However, HDL-C (P = 0.8), cholesterol efflux (P = 0.08), apoA1 (P = 0.8) and SAA (P = 0.8) did not differ significantly between obese participants with and without small nerve fibre damage. Small nerve fibre damage occurs in people with severe obesity. Patients with obesity have deranged lipoproteins and compromised HDL functionality compared to controls. Obese patients with evidence of small nerve fibre damage, compared to those without, had significantly higher serum triglycerides, lower PON-1 activity and a higher prevalence of metabolic syndrome.
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Affiliation(s)
- Shazli Azmi
- Division of Cardiovascular Sciences, Cardiac Centre, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK.,Diabetes, Endocrine and Metabolism Centre, Manchester University NHS Foundation Trust, Manchester, UK
| | - Maryam Ferdousi
- Division of Cardiovascular Sciences, Cardiac Centre, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Yifen Liu
- Division of Cardiovascular Sciences, Cardiac Centre, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Safwaan Adam
- Division of Cardiovascular Sciences, Cardiac Centre, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK.,Cardiovascular Trials Unit, The Old St Mary's Hospital, Central Manchester University Hospitals, Manchester, M13 9WL, UK.,The Christie NHS Foundation Trust, Manchester, UK
| | - Tarza Siahmansur
- Division of Cardiovascular Sciences, Cardiac Centre, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | | | - Andrew Marshall
- Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
| | | | - Jan Hoong Ho
- Division of Cardiovascular Sciences, Cardiac Centre, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK.,Cardiovascular Trials Unit, The Old St Mary's Hospital, Central Manchester University Hospitals, Manchester, M13 9WL, UK.,The Christie NHS Foundation Trust, Manchester, UK
| | - Akheel A Syed
- Department of Diabetes and Endocrinology, Salford Royal Trust NHS Foundation Trust, Salford, UK
| | - John M Gibson
- Department of Diabetes and Endocrinology, Salford Royal Trust NHS Foundation Trust, Salford, UK
| | - Basil J Ammori
- Department Surgery, Salford Royal Trust NHS Foundation Trust, Salford, UK
| | - Paul N Durrington
- Division of Cardiovascular Sciences, Cardiac Centre, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Rayaz A Malik
- Division of Cardiovascular Sciences, Cardiac Centre, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK.,Weill Cornell Medicine-Qatar, Doha, Qatar
| | - Handrean Soran
- Division of Cardiovascular Sciences, Cardiac Centre, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK. .,Cardiovascular Trials Unit, The Old St Mary's Hospital, Central Manchester University Hospitals, Manchester, M13 9WL, UK.
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15
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Diet, body weight and pain susceptibility - A systematic review of preclinical studies. NEUROBIOLOGY OF PAIN 2021; 10:100066. [PMID: 34195483 PMCID: PMC8237587 DOI: 10.1016/j.ynpai.2021.100066] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/26/2021] [Accepted: 06/11/2021] [Indexed: 02/07/2023]
Abstract
Obesity has been associated with increased susceptibility to chronic pain. Dietary and genetic models of obesity have been used to study this association. Allodynia is a common finding but alterations in nociception were inconsistent across studies. In subacute/chronic models, nocifencive behaviors were increased and/or sustained. Reviewed studies are overall consonant with the clinical literature.
Obesity has been associated with increased chronic pain susceptibility but causes are unclear. In this review, we systematize and analyze pain outcomes in rodent models of obesity as these can be important tools for mechanistic studies. Studies were identified using MEDLINE/PubMed and Scopus databases using the following search query: (((pain) OR (nociception)) AND (obesity)) AND (rat OR (mouse) OR (rodent))). From each eligible record we extracted the following data: species, strain, sex, pain/obesity model and main behavioral readouts. Out of 695 records 33 were selected for inclusion. 27 studies assessed nociception/acute pain and 17 studies assessed subacute or chronic pain. Overall genetic and dietary models overlapped in pain-related outcomes. Most acute pain studies reported either decreased or unaltered responses to noxious painful stimuli. However, decreased thresholds to mechanical innocuous stimuli, i.e. allodynia, were frequently reported. In most studies using subacute and chronic pain models, namely of subcutaneous inflammation, arthritis and perineural inflammation, decreased thresholds and/or prolonged pain manifestations were reported in obesity models. Strain comparisons and longitudinal observations indicate that genetic factors and the time course of the pathology might account for some of the discrepancies observed across studies. Two studies reported increased pain in animals subjected to high fat diet in the absence of weight gain. Pain-related outcomes in experimental models and clinical obesity are aligned indicating that the rodent can be an useful tool to study the interplay between diet, obesity and pain. In both cases weight gain might represent only a minor contribution to abnormal pain manifestation.
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16
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Liu Y, Sun Y, Ewaleifoh O, Wei J, Mi R, Zhu J, Hoke A, Polydefkis M. Ethoxyquin is neuroprotective and partially prevents somatic and autonomic neuropathy in db/db mouse model of type 2 diabetes. Sci Rep 2021; 11:10749. [PMID: 34031437 PMCID: PMC8144207 DOI: 10.1038/s41598-021-89781-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 04/29/2021] [Indexed: 11/24/2022] Open
Abstract
Ethoxyquin (EQ), a quinolone-based antioxidant, has demonstrated neuroprotective properties against several neurotoxic drugs in a phenotypic screening and is shown to protect axons in animal models of chemotherapy-induced peripheral neuropathy. We assessed the effects of EQ on peripheral nerve function in the db/db mouse model of type II diabetes. After a 7 week treatment period, 12-week-old db/db-vehicle, db/+ -vehicle and db/db-EQ treated animals were evaluated by nerve conduction, paw withdrawal against a hotplate, and fiber density in hindlimb footpads. We found that the EQ group had shorter paw withdrawal latency compared to vehicle db/db group. The EQ group scored higher in nerve conduction studies, compared to vehicle-treated db/db group. Morphology studies yielded similar results. To investigate the potential role of mitochondrial DNA (mtDNA) deletions in the observed effects of EQ, we measured total mtDNA deletion burden in the distal sciatic nerve. We observed an increase in total mtDNA deletion burden in vehicle-treated db/db mice compared to db/+ mice that was partially prevented in db/db-EQ treated animals. These results suggest that EQ treatment may exert a neuroprotective effect in diabetic neuropathy. The prevention of diabetes-induced mtDNA deletions may be a potential mechanism of the neuroprotective effects of EQ in diabetic neuropathy.
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Affiliation(s)
- Ying Liu
- Departments of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Yuan Sun
- Departments of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, USA.,Liaoning Laboratory of Cancer Genomics, Department of Cell Biology, College of Basic Medical Science, Dalian Medical University, Dalian, China
| | - Osefame Ewaleifoh
- Departments of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, USA.,Driskill Graduate Program, Northwestern University, Chicago, IL, USA
| | - Josh Wei
- Departments of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, USA.,Parker University, Dallas, TX, USA
| | - Ruifa Mi
- Departments of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Jing Zhu
- Departments of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, USA.,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medical, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Ahmet Hoke
- Departments of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Michael Polydefkis
- Departments of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, USA.
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17
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Mechanisms and Mediators of Pain in Chronic Inflammatory Arthritis. CURRENT TREATMENT OPTIONS IN RHEUMATOLOGY 2021. [DOI: 10.1007/s40674-021-00178-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Abstract
Purpose of the review
Pain in chronic inflammatory joint diseases is a common symptom reported by patients. Pain becomes of absolute clinical relevance especially when it becomes chronic, i.e., when it persists beyond normal healing times. As an operational definition, pain is defined chronic when it lasts for more than 3 months. This article aims to provide a review of the main mechanisms underlying pain in patients with chronic inflammatory joint diseases, discussing in particular their overlap.
Recent findings
While it may be intuitive how synovial inflammation or enthesitis are responsible for nociceptive pain, in clinical practice, it is common to find patients who continue to complain of symptoms despite optimal control of inflammation. In this kind of patients at the genesis of pain, there may be neuropathic or nociplastic mechanisms.
Summary
In the context of chronic inflammatory joint diseases, multiple mechanisms generally coexist behind chronic pain. It is the rheumatologist’s task to identify the mechanisms of pain that go beyond the nociceptive mechanisms, to adopt appropriate therapeutic strategies, including avoiding overtreatment of patients with immunosuppressive drugs. In this sense, future research will have to be oriented to search for biomarkers of non-inflammatory pain in patients with chronic inflammatory joint diseases.
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18
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Felix ER, Gater DR. Interrelationship of Neurogenic Obesity and Chronic Neuropathic Pain in Persons With Spinal Cord Injury. Top Spinal Cord Inj Rehabil 2021; 27:75-83. [PMID: 33814885 DOI: 10.46292/sci20-00062] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The prevalence of obesity and of neuropathic pain are both estimated at above 50% in the population of people with chronic spinal cord injury (SCI). These secondary consequences of SCI have significant negative impact on physical functioning, activities of daily living, and quality of life. Investigations of relationships between weight or body composition and chronic neuropathic pain in people with SCI are lacking, but investigations in non-SCI cohorts suggest an association between obesity and the presence and severity of neuropathic pain conditions. In the present article, we present a review of the literature linking obesity and neuropathic pain and summarize findings suggesting that metabolic syndrome and chronic, systemic inflammation due to excess adiposity increase the risk for neuropathic pain after an SCI.
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Affiliation(s)
- Elizabeth R Felix
- Department of Physical Medicine and Rehabilitation, University of Miami Miller School of Medicine, Miami, Florida.,Research Service, Miami Veterans Affairs (VA) Healthcare System, Miami, Florida
| | - David R Gater
- Department of Physical Medicine and Rehabilitation, University of Miami Miller School of Medicine, Miami, Florida.,The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, Florida
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19
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Singh P, Adderley N, Subramanian A, Gokhale K, Singhal R, Toulis KA, Bellary S, Nirantharakumar K, Tahrani AA. The Impact of Bariatric Surgery on Incident Microvascular Complications in Patients With Type 2 Diabetes: A Matched Controlled Population-Based Retrospective Cohort Study. Diabetes Care 2021; 44:116-124. [PMID: 33444160 PMCID: PMC7783931 DOI: 10.2337/dc20-0571] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 10/07/2020] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To assess the impact of bariatric surgery (BS) on incident microvascular complications of diabetes-related foot disease (DFD), sight-threatening diabetic retinopathy (STDR), and chronic kidney disease (CKD) in patients with type 2 diabetes and obesity. RESEARCH DESIGN AND METHODS A retrospective matched, controlled population-based cohort study was conducted of adults with type 2 diabetes between 1 January 1990 and 31 January 2018 using IQVIA Medical Research Data (IMRD), a database of primary care electronic records. Each patient with type 2 diabetes who subsequently had BS (surgical group) was matched on the index date with up to two patients with type 2 diabetes who did not have BS (nonsurgical group) within the same general practice by age, sex, preindex BMI, and diabetes duration. RESULTS Included were 1,126 surgical and 2,219 nonsurgical participants. In the study population 2,261 (68%) were women. Mean (SD) age was 49.87 (9.3) years vs. 50.12 (9.3) years and BMI was 46.76 (7.96) kg/m2 vs. 46.14 (7.49) kg/m2 in the surgical versus nonsurgical group, respectively. In the surgical group, 22.1%, 22.7%, 52.2%, and 1.1% of patients had gastric band, sleeve gastrectomy, Roux-en-Y gastric bypass (RYGB), and duodenal switch, respectively. Over a median follow-up of 3.9 years (interquartile range 1.8-6.4), BS was associated with reduction in incident combined microvascular complications (adjusted hazard ratio 0.53, 95% CI 0.43-0.66, P < 0.001), DFD (0.61, 0.50-0.75, P < 0.001), STDR (0.66, 0.44-1.00, P = 0.048), and CKD (0.63, 0.51-0.78, P < 0.001). Analysis based on the type of surgery showed that all types of surgery were associated with a favorable impact on the incidence of composite microvascular complications, with the greatest reduction for RYGB. CONCLUSIONS BS was associated with a significant reduction in incident diabetes-related microvascular complications.
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Affiliation(s)
- Pushpa Singh
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, U.K.,Department of Diabetes and Endocrinology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, U.K
| | - Nicola Adderley
- Institute of Applied Health Research, University of Birmingham, Birmingham, U.K
| | | | - Krishna Gokhale
- Institute of Applied Health Research, University of Birmingham, Birmingham, U.K
| | - Rishi Singhal
- Department of Surgery, University Hospital Birmingham NHS Foundation Trust, Birmingham, U.K
| | - Konstantinos A Toulis
- Institute of Applied Health Research, University of Birmingham, Birmingham, U.K.,Department of Endocrinology, 424 General Army Training Hospital, Thessaloniki, Greece
| | - Srikanth Bellary
- Department of Diabetes and Endocrinology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, U.K.,School of Life and Health Sciences, Aston University, Birmingham, U.K
| | - Krishnarajah Nirantharakumar
- Department of Diabetes and Endocrinology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, U.K. .,Institute of Applied Health Research, University of Birmingham, Birmingham, U.K.,Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, U.K.,Midlands Health Data Research, Birmingham, U.K
| | - Abd A Tahrani
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, U.K.,Department of Diabetes and Endocrinology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, U.K.,Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, U.K
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20
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Palavicini JP, Chen J, Wang C, Wang J, Qin C, Baeuerle E, Wang X, Woo JA, Kang DE, Musi N, Dupree JL, Han X. Early disruption of nerve mitochondrial and myelin lipid homeostasis in obesity-induced diabetes. JCI Insight 2020; 5:137286. [PMID: 33148881 PMCID: PMC7710310 DOI: 10.1172/jci.insight.137286] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 09/30/2020] [Indexed: 12/17/2022] Open
Abstract
Diabetic neuropathy is a major complication of diabetes. Current treatment options alleviate pain but do not stop the progression of the disease. At present, there are no approved disease-modifying therapies. Thus, developing more effective therapies remains a major unmet medical need. Seeking to better understand the molecular mechanisms driving peripheral neuropathy, as well as other neurological complications associated with diabetes, we performed spatiotemporal lipidomics, biochemical, ultrastructural, and physiological studies on PNS and CNS tissue from multiple diabetic preclinical models. We unraveled potentially novel molecular fingerprints underlying nerve damage in obesity-induced diabetes, including an early loss of nerve mitochondrial (cardiolipin) and myelin signature (galactosylceramide, sulfatide, and plasmalogen phosphatidylethanolamine) lipids that preceded mitochondrial, myelin, and axonal structural/functional defects; started in the PNS; and progressed to the CNS at advanced diabetic stages. Mechanistically, we provided substantial evidence indicating that these nerve mitochondrial/myelin lipid abnormalities are (surprisingly) not driven by hyperglycemia, dysinsulinemia, or insulin resistance, but rather associate with obesity/hyperlipidemia. Importantly, our findings have major clinical implications as they open the door to novel lipid-based biomarkers to diagnose and distinguish different subtypes of diabetic neuropathy (obese vs. nonobese diabetics), as well as to lipid-lowering therapeutic strategies for treatment of obesity/diabetes-associated neurological complications and for glycemic control. Spatiotemporal lipidomics, biochemical, ultrastructural, and physiological characterization of peripheral and central nervous system tissue from multiple diabetic pre-clinical models.
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Affiliation(s)
- Juan P Palavicini
- Barshop Institute for Longevity and Aging Studies and.,Division of Diabetes, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Juan Chen
- Barshop Institute for Longevity and Aging Studies and.,School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chunyan Wang
- Barshop Institute for Longevity and Aging Studies and
| | - Jianing Wang
- Barshop Institute for Longevity and Aging Studies and
| | - Chao Qin
- Barshop Institute for Longevity and Aging Studies and
| | - Eric Baeuerle
- Barshop Institute for Longevity and Aging Studies and
| | - Xinming Wang
- Byrd Alzheimer's Center and Research Institute, USF Health Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
| | - Jung A Woo
- Byrd Alzheimer's Center and Research Institute, USF Health Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
| | - David E Kang
- Byrd Alzheimer's Center and Research Institute, USF Health Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
| | - Nicolas Musi
- Barshop Institute for Longevity and Aging Studies and.,Division of Diabetes, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Jeffrey L Dupree
- Department of Anatomy and Neurobiology, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, USA.,Research Service, Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond, Virginia, USA
| | - Xianlin Han
- Barshop Institute for Longevity and Aging Studies and.,Division of Diabetes, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
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21
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Gao M, Yun X, Zhang T. VSA-3000: A Quantitative Vibration Sensation Testing Device for Patients With Central Nervous System Injury. Front Neurol 2020; 11:936. [PMID: 33013633 PMCID: PMC7505990 DOI: 10.3389/fneur.2020.00936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 07/20/2020] [Indexed: 11/13/2022] Open
Abstract
Objective: To investigate the effect of using Vibration Sensory Analyzer-3000 (VSA-3000) in patients with impaired vibration sensation caused by central nervous system injury. Design: Prospective observational study. Setting: A university hospital for the research and clinical practice of rehabilitation. Subjects: Sixty patients (30 stroke and 30 spinal cord injury) were recruited, aged between 20 and 71 years old, under stable medication. Interventions: Not applicable. Main Measure: VSA-3000 threshold test, tuning fork test and somatosensory evoked potential (SSEP) measurement. Results: Test-retest reliability was determined based on data collected from 60 subjects, and the intraclass correlation coefficient (ICC) for vibration perception thresholds (VPTs) was in the “substantial” range. The kappa value between VSA-3000 and SSEP was 0.877, which was higher than that of tuning fork (κ = 0.732). VSA-3000 had good diagnostic accuracy with a sensitivity of 94.8%, specificity of 92.9%, and positive-predictive value of 93.8% and negative-predictive value of 94.0%, each value was higher than that of tuning fork. The area under the receiver operating characteristic curve (AUC) of VSA-3000 was 0.95 (95% CI: 0.91 to 0.98) and that of tuning fork was 0.89 (95% CI: 0.85 to 0.95), and there was a significant difference between the two values (P = 0.0216). The types of injury and age were the independent correlates of the VPTs. Conclusion: The present study provides preliminary evidence that VSA-3000 is a non-invasive and convenient quantitative testing instrument with good diagnostic accuracy, and it may be useful as a screening tool for assessing impaired vibration sensation caused by central nerve injury.
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Affiliation(s)
- Mingming Gao
- School of Rehabilitation Medicine, Capital Medical University, Beijing, China.,Department of Rehabilitation Evaluation, China Rehabilitation Research Center, Beijing Bo'ai Hospital, Beijing, China
| | - Xiaoping Yun
- School of Rehabilitation Medicine, Capital Medical University, Beijing, China.,Department of Rehabilitation Evaluation, China Rehabilitation Research Center, Beijing Bo'ai Hospital, Beijing, China
| | - Tong Zhang
- School of Rehabilitation Medicine, Capital Medical University, Beijing, China.,Neurorehabilitation Center, China Rehabilitation Research Center, Beijing Bo'ai Hospital, Beijing, China
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22
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Bueno JWF, Coelho DB, Souza CRD, Teixeira LA. Associations Between Women's Obesity Status and Diminished Cutaneous Sensibility Across Foot Sole Regions. Percept Mot Skills 2020; 128:243-257. [PMID: 32962537 DOI: 10.1177/0031512520958511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
People who are obese sustain very high foot pressures when standing, with potential consequences to their feet soles' cutaneous sensibility. In the current investigation, we performed a detailed assessment of foot sole sensibility in women with morbid obesity (n = 13; age = 38.85, SD = 8.09 years) status in comparison with leaner women (n = 13; age = 37.62, SD = 7.10 years). We estimated tactile feet sole sensibility through graduated monofilament light touch applied at several hotspots of both feet soles, covering the toes, metatarsal heads, midfoot internal and lateral arches, and heel. Intergroup comparisons per foot sole region indicated significantly lower sensibility for the group with morbid obesity under the fifth and third metatarsal heads, midfoot lateral and internal arches and heel. We found a large variation across the sole regions, with the lowest difference between the obese and lean groups observed under the hallux (18%) and the largest difference observed under the lateral arch of the midfoot (76%). Correlation analyses between body weight and sensibility scores revealed a significant positive correlation among participants who were leaner (rs = 0.56, p = 0.05) but not among participants who were obese (rs = -0.06, p = 0.83). Mainly, our results showed that morbid obesity was associated with significantly higher cutaneous sensibility thresholds, with large variability of the sensibility deficit across different regions of both feet soles. Due to its functional relevance for body balance control, reduced sensibility thresholds among women who are morbidly obese may have implications for stance stability.
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Affiliation(s)
- Jair Wesley Ferreira Bueno
- Human Motor Systems Laboratory, School of Physical Education and Sport, University of São Paulo, SP, Brazil
| | - Daniel Boari Coelho
- Human Motor Systems Laboratory, School of Physical Education and Sport, University of São Paulo, SP, Brazil.,Biomedical Engineering, Federal University of ABC, São Bernardo do Campo, SP, Brazil
| | - Caroline Ribeiro de Souza
- Human Motor Systems Laboratory, School of Physical Education and Sport, University of São Paulo, SP, Brazil
| | - Luis Augusto Teixeira
- Human Motor Systems Laboratory, School of Physical Education and Sport, University of São Paulo, SP, Brazil
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23
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Benavidez GA, Ylitalo KR, Lanning B, Asare M, Meyer A, Griggs JO. Peripheral neuropathy and depressive symptoms: examining the association in a primary health care setting among persons with and without diabetes mellitus. Qual Life Res 2020; 29:3297-3304. [PMID: 32651803 DOI: 10.1007/s11136-020-02579-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/03/2020] [Indexed: 11/24/2022]
Abstract
PURPOSE The purpose of this study was to measure the association between peripheral neuropathy symptoms and depressive symptoms among a sample of patients with and without diabetes mellitus (DM). METHODS Patients were administered the 15-item Michigan Neuropathy Screening Instrument (MNSI) and the patient health questionnaire depression scale (PHQ-8). Patients with an MNSI score ≥ 4 were categorized as having PN and patients with a PHQ-8 score ≥ 10 were considered to have current depression. Log-binomial regression was used to analyze the relationship between PN and depressive symptoms. RESULTS 406 patients were included in the final analysis. There were no statistically significant differences by diabetes status in PN symptoms (Diabetes = 61.8%; No diabetes = 55.4%; p = .20) or in depression status (Diabetes = 37.6%; No diabetes = 36.6%; p = .83). After adjustment for covariates, PN was associated with depression (aRR = 4.46; 95% CI 2.91,6.85) independent of diabetes status. CONCLUSIONS PN symptoms may be common among aging persons even in the absence of DM. Past literature and our study demonstrate that PN and depression are closely associated. More work is needed to understand the etiology and potential utility of intervention for depression symptoms among patients with neuropathy.
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Affiliation(s)
- Gabriel A Benavidez
- Department of Public Health, Baylor University, One Bear Place #97343, Waco, TX, 76798, USA.
| | - Kelly R Ylitalo
- Department of Public Health, Baylor University, One Bear Place #97343, Waco, TX, 76798, USA
| | - Beth Lanning
- Department of Public Health, Baylor University, One Bear Place #97343, Waco, TX, 76798, USA
| | - Matt Asare
- Department of Public Health, Baylor University, One Bear Place #97343, Waco, TX, 76798, USA
| | - Andrew Meyer
- Department of Health, Human Performance, and Recreation, Baylor University, One Bear Place #97313, Waco, TX, 76798, USA
| | - Jackson O Griggs
- Waco Family Health Center, 1600 Providence Dr, Waco, TX, 76707, USA
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24
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Ellis RJ, Diaz M, Sacktor N, Marra C, Collier AC, Clifford DB, Calcutt N, Fields JA, Heaton RK, Letendre SL. Predictors of worsening neuropathy and neuropathic pain after 12 years in people with HIV. Ann Clin Transl Neurol 2020; 7:1166-1173. [PMID: 32619341 PMCID: PMC7359117 DOI: 10.1002/acn3.51097] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/15/2020] [Accepted: 05/16/2020] [Indexed: 01/19/2023] Open
Abstract
OBJECTIVE Distal sensory polyneuropathy (DSP) and neuropathic pain are important clinical concerns in virally suppressed people with HIV. We determined how these conditions evolved, what factors influenced their evolution, and their clinical impact. METHODS Ambulatory, community-dwelling HIV seropositive individuals were recruited at six research centers. Clinical evaluations at baseline and 12 years later determined neuropathy signs and distal neuropathic pain (DNP). Additional assessments measured activities of daily living and quality of life (QOL). Factors potentially associated with DSP and DNP progression included disease severity, treatment, demographics, and co-morbidities. Adjusted odds ratios were calculated for follow-up neuropathy outcomes. RESULTS Of 254 participants, 21.3% were women, 57.5% were non-white. Mean baseline age was 43.5 years. Polyneuropathy prevalence increased from 25.7% to 43.7%. Of 173 participants initially pain-free, 42 (24.3%) had incident neuropathic pain. Baseline risk factors for incident pain included unemployment (OR [95% CI], 5.86 [1.97, 17.4]) and higher baseline body mass index (BMI) (1.78 [1.03, 3.19] per 10-units). Participants with neuropathic pain at follow-up had significantly worse QOL and greater dependence in activities of daily living than those who remained pain-free. INTERPRETATION HIV DSP and neuropathic pain increased in prevalence and severity over 12 years despite high rates of viral suppression. The high burden of neuropathy included disability and poor life quality. However, substantial numbers remained pain-free despite clear evidence of neuropathy on exam. Protective factors included being employed and having a lower BMI. Implications for clinical practice include promotion of lifestyle changes affecting reversible risk factors.
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Affiliation(s)
- Ronald J. Ellis
- Departments of Neurosciences and PsychiatryUniversity of California, San DiegoLa JollaCalifornia
| | - Monica Diaz
- Department of MedicineUniversity of California, San DiegoLa JollaCalifornia
| | - Ned Sacktor
- Department of NeurologyJohns Hopkins UniversityBaltimoreMaryland
| | - Christina Marra
- Department of NeurologyUniversity of WashingtonSeattleWashington
| | - Ann C. Collier
- Department of MedicineUniversity of WashingtonSeattleWashington
| | | | - Nigel Calcutt
- Department of PathologyUniversity of California, San DiegoLa JollaCalifornia
| | - Jerel A. Fields
- Department of PsychiatryUniversity of California, San DiegoLa JollaCalifornia
| | - Robert K. Heaton
- Department of PsychiatryUniversity of California, San DiegoLa JollaCalifornia
| | - Scott L. Letendre
- Departments of Medicine and PsychiatryUniversity of California, San DiegoLa JollaCalifornia
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25
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Quantitative Sensory Testing in Adolescents with Co-occurring Chronic Pain and Obesity: A Pilot Study. CHILDREN-BASEL 2020; 7:children7060055. [PMID: 32498300 PMCID: PMC7346135 DOI: 10.3390/children7060055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/28/2020] [Accepted: 05/29/2020] [Indexed: 11/25/2022]
Abstract
Factors such as gender, ethnicity, and age affect pain processing in children and adolescents with chronic pain. Although obesity has been shown to affect pain processing in adults, almost nothing is known about pediatric populations. The aim of this pilot study was to explore whether obesity alters sensory processing in adolescents with chronic pain. Participants were recruited from a chronic pain clinic (Chronic Pain (CP), n = 12 normal weight; Chronic Pain + Obesity (CPO), n = 19 overweight/obesity) and from an obesity clinic (Obesity alone (O), n = 14). The quantitative sensory testing protocol included assessments of thermal and mechanical pain thresholds and perceptual sensitization at two sites with little adiposity. The heat pain threshold at the hand was significantly higher in the CPO group than in either the CP or O groups. Mechanical pain threshold (foot) was significantly higher in the CPO group than the CP group. No differences were found on tests of perceptual sensitization. Correlations between experimental pain and clinical pain parameters were found for the CPO group, but not for the CP group. This preliminary study provides important lessons learned for subsequent, larger-scale studies of sensory processing for youth with co-occurring chronic pain and obesity.
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26
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Cifani C, Avagliano C, Micioni Di Bonaventura E, Giusepponi ME, De Caro C, Cristiano C, La Rana G, Botticelli L, Romano A, Calignano A, Gaetani S, Micioni Di Bonaventura MV, Russo R. Modulation of Pain Sensitivity by Chronic Consumption of Highly Palatable Food Followed by Abstinence: Emerging Role of Fatty Acid Amide Hydrolase. Front Pharmacol 2020; 11:266. [PMID: 32231568 PMCID: PMC7086305 DOI: 10.3389/fphar.2020.00266] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 02/24/2020] [Indexed: 01/03/2023] Open
Abstract
There is a strong relationship between palatable diet and pain sensitivity, and the cannabinoid and opioid systems might play an important role in this correlation. The palatable diet used in many animal models of obesity is the cafeteria (CAF) diet, based on human food with high sugar, salt, and fat content. In this study, we investigated whether long-term exposure to a CAF diet could modify pain sensitivity and explored the role of the cannabinergic system in this modification. Male Sprague–Dawley rats were divided into two groups: one fed with standard chow only (CO) and the other with extended access (EA) to a CAF diet. Hot plate and tail flick tests were used to evaluate pain sensitivity. At the end of a 40-day CAF exposure, EA rats showed a significant increase in the pain threshold compared to CO rats, finding probably due to up-regulation of CB1 and mu-opioid receptors. Instead, during abstinence from palatable foods, EA animals showed a significant increase in pain sensibility, which was ameliorated by repeated treatment with a fatty acid amide hydrolase inhibitor, PF-3845 (10 mg/kg, intraperitoneally), every other day for 28 days. Ex vivo analysis of the brains of these rats clearly showed that this effect was mediated by mu-opioid receptors, which were up-regulated following repeated treatment of PF-3845. Our data add to the knowledge about changes in pain perception in obese subjects, revealing a key role of CB1 and mu-opioid receptors and their possible pharmacological crosstalk and reinforcing the need to consider this modulation in planning effective pain management for obese patients.
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Affiliation(s)
- Carlo Cifani
- School of Pharmacy, Pharmacology Unit, University of Camerino, Camerino, Italy
| | - Carmen Avagliano
- Department of Pharmacy, "Federico II" University of Naples, Naples, Italy
| | | | | | - Carmen De Caro
- Department of Pharmacy, "Federico II" University of Naples, Naples, Italy
| | - Claudia Cristiano
- Department of Pharmacy, "Federico II" University of Naples, Naples, Italy
| | - Giovanna La Rana
- Department of Pharmacy, "Federico II" University of Naples, Naples, Italy
| | - Luca Botticelli
- School of Pharmacy, Pharmacology Unit, University of Camerino, Camerino, Italy
| | - Adele Romano
- Department of Physiology and Pharmacology "V. Erspamer," Sapienza University of Rome, Rome, Italy
| | - Antonio Calignano
- Department of Pharmacy, "Federico II" University of Naples, Naples, Italy
| | - Silvana Gaetani
- Department of Physiology and Pharmacology "V. Erspamer," Sapienza University of Rome, Rome, Italy
| | | | - Roberto Russo
- Department of Pharmacy, "Federico II" University of Naples, Naples, Italy
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27
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Sultan S, Patel AG, El-Hassani S, Whitelaw B, Leca BM, Vincent RP, le Roux CW, Rubino F, Aywlin SJB, Dimitriadis GK. Male Obesity Associated Gonadal Dysfunction and the Role of Bariatric Surgery. Front Endocrinol (Lausanne) 2020; 11:408. [PMID: 32636807 PMCID: PMC7318874 DOI: 10.3389/fendo.2020.00408] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 05/20/2020] [Indexed: 01/01/2023] Open
Abstract
Obesity is an ever growing pandemic and a prevalent problem among men of reproductive age that can both cause and exacerbate male-factor infertility by means of endocrine abnormalities, associated comorbidities, and direct effects on the precision and throughput of spermatogenesis. Robust epidemiologic, clinical, genetic, epigenetic, and preclinical data support these findings. Clinical studies on the impact of medically induced weight loss on serum testosterone concentrations and spermatogenesis is promising but may show differential and unsustainable results. In contrast, literature has demonstrated that weight loss after bariatric surgery is correlated with an increase in serum testosterone concentrations that is superior than that obtained with only lifestyle modifications, supporting a further metabolic benefit from surgery that may be specific to the male reproductive system. The data on sperm and semen parameters is controversial to date. Emerging evidence in the burgeoning field of genetics and epigenetics has demonstrated that paternal obesity can affect offspring metabolic and reproductive phenotypes by means of epigenetic reprogramming of spermatogonial stem cells. Understanding the impact of this reprogramming is critical to a comprehensive view of the impact of obesity on subsequent generations. Furthermore, conveying the potential impact of these lifestyle changes on future progeny can serve as a powerful tool for obese men to modify their behavior. Healthcare professionals treating male infertility and obesity need to adapt their practice to assimilate these new findings to better counsel men about the importance of paternal preconception health and the impact of novel non-medical therapeutic interventions. Herein, we summarize the pathophysiology of obesity on the male reproductive system and emerging evidence regarding the potential role of bariatric surgery as treatment of male obesity-associated gonadal dysfunction.
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Affiliation(s)
- Sana Sultan
- Department of Endocrinology and Metabolic Medicine, King's College Hospital NHS Foundation Trust, London, United Kingdom
| | - Ameet G. Patel
- Department of Minimal Access Surgery, King's College Hospital NHS Foundation Trust, London, United Kingdom
| | - Shamsi El-Hassani
- Minimal Access and Bariatric Unit, Princess Royal University Hospital, King's College Hospital NHS Foundation Trust, Orpington, United Kingdom
| | - Benjamin Whitelaw
- Department of Endocrinology and Metabolic Medicine, King's College Hospital NHS Foundation Trust, London, United Kingdom
| | - Bianca M. Leca
- Department of Endocrinology and Metabolic Medicine, King's College Hospital NHS Foundation Trust, London, United Kingdom
| | - Royce P. Vincent
- Department of Clinical Biochemistry, King's College Hospital NHS Foundation Trust, London, United Kingdom
| | - Carel W. le Roux
- Diabetes Complication Research Centre, School of Medicine and Medical Science, UCD Conway Institute, University College Dublin, Belfield, Ireland
| | - Francesco Rubino
- Department of Minimal Access Surgery, King's College Hospital NHS Foundation Trust, London, United Kingdom
| | - Simon J. B. Aywlin
- Department of Endocrinology and Metabolic Medicine, King's College Hospital NHS Foundation Trust, London, United Kingdom
| | - Georgios K. Dimitriadis
- Department of Endocrinology and Metabolic Medicine, King's College Hospital NHS Foundation Trust, London, United Kingdom
- *Correspondence: Georgios K. Dimitriadis
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28
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Li J, Liu HQ, Li XB, Yu WJ, Wang T. Function of Adenosine 2A Receptor in High-Fat Diet-Induced Peripheral Neuropathy. J Diabetes Res 2020; 2020:7856503. [PMID: 32566683 PMCID: PMC7267854 DOI: 10.1155/2020/7856503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 03/27/2020] [Accepted: 04/13/2020] [Indexed: 12/18/2022] Open
Abstract
Peripheral diabetic neuropathy (DPN) is a complication observed in up to half of all patients with type 2 diabetes. DPN has also been shown to be associated with obesity. High-fat diet (HFD) affects glucose metabolism, and the impaired glucose tolerance can lead to type 2 diabetes. There is evidence to suggest a role of adenosine 2A receptors (A2ARs) and semaphorin 3A (Sema3a) signaling in DPN. The link between the expression of Sema3a and A2AR in DPN was hypothesized, but the underlying mechanisms remain poorly understood. In this study, we investigated the regulation of Sema3a by A2AR in the spinal cord and the functional implications thereof in DPN. We examined the expression of A2ARs and Sema3a, as well as Neuropilin 1 and Plexin A, the coreceptors of Sema3a, in the dorsal horn of the lumbar spinal cord of an animal model with HFD-induced diabetes. Our results demonstrate that HFD dysregulates the A2AR-mediated Sema3a expression, with functional implications for the type 2 diabetes-induced peripheral neuropathy. These observations could stimulate clinical studies to improve our understanding on the subject.
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MESH Headings
- Animals
- Diabetes Mellitus, Experimental/etiology
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/pathology
- Diabetes Mellitus, Type 2/complications
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/pathology
- Diabetic Neuropathies/etiology
- Diabetic Neuropathies/metabolism
- Diabetic Neuropathies/pathology
- Diet, High-Fat
- Ganglia, Spinal/metabolism
- Ganglia, Spinal/pathology
- Male
- Mice
- Mice, Inbred C57BL
- Nerve Fibers/metabolism
- Nerve Fibers/pathology
- Receptor, Adenosine A2A/physiology
- Semaphorin-3A/metabolism
- Spinal Cord/metabolism
- Spinal Cord/pathology
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Affiliation(s)
- Ji Li
- Department of Anesthesiology, The First Hospital of Jilin University, Changchun, China
| | - Huan-Qiu Liu
- Department of Anesthesiology, The First Hospital of Jilin University, Changchun, China
| | - Xin-Bai Li
- Department of Anesthesiology, The First Hospital of Jilin University, Changchun, China
| | - Wen-Jun Yu
- Department of Hand Surgery, The First Hospital of Jilin University, Changchun, China
| | - Tao Wang
- Department of Hand Surgery, The First Hospital of Jilin University, Changchun, China
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29
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Chin SH, Huang WL, Akter S, Binks M. Obesity and pain: a systematic review. Int J Obes (Lond) 2019; 44:969-979. [PMID: 31848456 DOI: 10.1038/s41366-019-0505-y] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 10/04/2019] [Accepted: 11/19/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND/OBJECTIVES The current systematic review considered research published within the 10 years preceding June 2019, dealing with the topic of obesity and pain. Within the context of the complex biological and behavioral interrelationships among these phenomena, we sought to identify gaps in the literature and to highlight key targets for future transdisciplinary research. The overarching inclusion criteria were that the included studies could directly contribute to our understanding of these complex phenomena. METHODS We searched PubMed/Medline/Cochrane databases dating back 10 years, using the primary search terms "obesity" and "pain," and for a secondary search we used the search terms "pain" and "diet quality." RESULTS Included studies (n = 70) are primarily human; however, some animal studies were included to enhance understanding of related basic biological phenomena and/or where human data were absent or significantly limited. CONCLUSIONS Our overall conclusions highlight (1) the mechanisms of obesity-related pain (i.e., mechanical, behavioral, and physiological) and potential biological and behavioral contributors (e.g., gender, distribution of body fat, and dietary factors), (2) the requirement for accurate and reliable objective measurement, (3) the need to integrate biological and behavioral contributors into comprehensive, well-controlled prospective study designs.
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Affiliation(s)
- Shao-Hua Chin
- Texas Tech University, 1301 Akron Street, Box 41270, Lubbock, TX, 79409-1270, USA
| | - Wei-Lin Huang
- Texas Tech University, 1301 Akron Street, Box 41270, Lubbock, TX, 79409-1270, USA
| | - Sharmin Akter
- Texas Tech University, 1301 Akron Street, Box 41270, Lubbock, TX, 79409-1270, USA
| | - Martin Binks
- Texas Tech University, 1301 Akron Street, Box 41270, Lubbock, TX, 79409-1270, USA.
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30
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The Relationship of Chemotherapy-Induced Peripheral Neuropathy and Obesity: A Systematic Review. REHABILITATION ONCOLOGY 2019. [DOI: 10.1097/01.reo.0000000000000183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Male sexual dysfunction in obesity: The role of sex hormones and small fibre neuropathy. PLoS One 2019; 14:e0221992. [PMID: 31509565 PMCID: PMC6738611 DOI: 10.1371/journal.pone.0221992] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 07/30/2019] [Indexed: 01/01/2023] Open
Abstract
Context Multiple factors contribute to sexual dysfunction in men with obesity. Sex hormone levels are commonly abnormal in men with obesity and this abnormality is often the focus of management in clinical practice. The role of small fibre neuropathy in obesity-related sexual dysfunction is not well established. Objective We aimed to investigate the relationship between sexual function, sex hormone levels and small nerve fibre morphology in men with severe obesity. Materials and methods A prospective study of 29 men with severe obesity was undertaken. Sexual function was assessed using the European Male Ageing Study Sexual Function Questionnaire. Small nerve fibre morphology was quantified using corneal confocal microscopy. Sex hormone levels were measured by mass spectrophotometry. Results Erectile dysfunction was present in 72% of the cohort with a higher prevalence of diabetes among the symptomatic group (88% vs 38%, p = 0.006). Corneal nerve fibre length (CNFL) and corneal nerve fibre density (CNFD) were both significantly lower in participants with erectile dysfunction compared to those without (p = 0.039 and p = 0.048 respectively). The erectile function score correlated with CNFL (r = -0.418, p = 0.034) and CNFD (r = -0.411, p = 0.037). Total testosterone and calculated free testosterone levels did not differ significantly between men with or without erectile dysfunction (median 8.8 nmol/L vs 9.0 nmol/L, p = 0.914; and median 176 pmol/L vs 179 pmol/L, p = 0.351 respectively), infrequent sexual thoughts (median 8.1 nmol/L vs 9.2 nmol/L, p = 0.650; and median 184 pmol/L, vs 176 pmol/L, p = 0.619 respectively) and decreased morning erections (median 9.0 nmol/L vs 8.8 nmol/L, p = 0.655; and median 170 pmol/L vs 193 pmol/L, p = 0.278 respectively). Conclusion Sexual dysfunction is highly prevalent in men with severe obesity. We found an association between small fibre neuropathy with erectile dysfunction with presence of diabetes a likely a significant contributing factor. We found no associations between testosterone levels with sexual symptoms (including frequency of sexual thoughts). The influence of small nerve fibre neuropathy on response to therapeutic interventions and whether interventions that improve small fibre neuropathy can improve erectile function in this population merits further study.
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Dusendang JR, Reeves AN, Karvonen-Gutierrez CA, Herman WH, Ylitalo KR, Harlow SD. The association between perceived discrimination in midlife and peripheral neuropathy in a population-based cohort of women: the Study of Women's Health Across the Nation. Ann Epidemiol 2019; 37:10-16. [PMID: 31447292 PMCID: PMC6755046 DOI: 10.1016/j.annepidem.2019.07.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 06/01/2019] [Accepted: 07/11/2019] [Indexed: 12/17/2022]
Abstract
PURPOSE Peripheral neuropathy (PN) is a highly prevalent condition with serious sequelae. Many studies of the condition have been restricted to populations with diabetes, limiting evidence of potential contributing risk factors including salient psychosocial risk factors such as discrimination. METHODS The longitudinal Study of Women's Health Across the Nation was used to assess the relationship between perceived discrimination and prevalent PN in 1718 ethnically diverse midlife women. We used multivariable logistic regression to determine the association between perceived discrimination (Detroit Area Study Everyday Discrimination Scale) and PN (symptom questionnaire and monofilament testing) and conducted an assessment of the mediating effects of body mass index (BMI). RESULTS The prevalence of PN was 26.1% in the total sample and 40.9% among women with diabetes. Women who reported perceived discrimination had 29% higher odds of PN compared with women who did not report perceived discrimination (95% confidence interval, 1.01-1.66). Approximately 30% of the total effect of discrimination on PN was mediated indirectly by BMI. CONCLUSIONS More research is needed to determine the contributing factors to nondiabetic PN. Our findings reaffirm the impact of financial strain, BMI, and diabetes as significant correlates of PN and highlight discrimination as an important risk factor.
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Affiliation(s)
- Jennifer R Dusendang
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor
| | - Alexis N Reeves
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor
| | | | - William H Herman
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor; Department of Internal Medicine, School of Medicine, University of Michigan, Ann Arbor
| | | | - Siobán D Harlow
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor.
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Petrovchich I, Kober KM, Wagner L, Paul SM, Abrams G, Chesney MA, Topp K, Smoot B, Schumacher M, Conley YP, Hammer M, Levine JD, Miaskowski C. Deleterious Effects of Higher Body Mass Index on Subjective and Objective Measures of Chemotherapy-Induced Peripheral Neuropathy in Cancer Survivors. J Pain Symptom Manage 2019; 58:252-263. [PMID: 31047960 PMCID: PMC6679783 DOI: 10.1016/j.jpainsymman.2019.04.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 04/22/2019] [Accepted: 04/23/2019] [Indexed: 12/28/2022]
Abstract
CONTEXT Recent, albeit, limited evidence suggests that body mass index (BMI) may be a modifiable risk factor to reduce the deleterious effects of chemotherapy-induced peripheral neuropathy (CIPN) in cancer survivors. OBJECTIVES To evaluate for differences in demographic, clinical, pain, sensation, and balance characteristics among three BMI groups. We hypothesized that as BMI increased, survivors would report higher pain intensity scores and have significant decrements in measures of sensation and balance. METHODS A total of 416 survivors with CIPN were evaluated using subjective and objective measures of CIPN. Survivors were divided into three BMI groups (i.e., normal weight, overweight, and obese). Differences among the BMI groups were evaluated using parametric and nonparametric statistics. RESULTS Of the 416 survivors, 45.4% were normal weight, 32.5% were overweight, and 22.1% were obese. Compared with the normal-weight group, survivors in the other two groups had lower functional status scores, a higher comorbidity burden, higher pain intensity scores, and higher interference scores. In addition, compared with the normal-weight group, survivors in the other two BMI groups had significantly worse balance scores. CONCLUSION Our findings support the hypothesis that as BMI increased, pain sensation and balance characteristics worsened. Our findings suggest that nutritional counseling as well as exercise and weight management programs in survivors with CIPN may improve these clinically important problems.
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Affiliation(s)
- Iva Petrovchich
- School of Nursing, University of California, San Francisco, California, USA
| | - Kord M Kober
- School of Nursing, University of California, San Francisco, California, USA
| | - Laura Wagner
- School of Nursing, University of California, San Francisco, California, USA
| | - Steven M Paul
- School of Nursing, University of California, San Francisco, California, USA
| | - Gary Abrams
- School of Medicine, University of California, San Francisco, California, USA
| | - Margaret A Chesney
- School of Medicine, University of California, San Francisco, California, USA
| | - Kimberly Topp
- School of Medicine, University of California, San Francisco, California, USA
| | - Betty Smoot
- School of Medicine, University of California, San Francisco, California, USA
| | - Mark Schumacher
- School of Medicine, University of California, San Francisco, California, USA
| | - Yvette P Conley
- School of Nursing, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | | | - Jon D Levine
- School of Medicine, University of California, San Francisco, California, USA
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Jeong HJ, Sim WS, Park HJ, Lee SH, Oh MS, Cho MK, Seon HJ, Lee JY. Severe lumbar radiculopathy with epidural venous plexus engorgement in a morbidly obese pediatric patient: A case report. Medicine (Baltimore) 2019; 98:e16842. [PMID: 31415408 PMCID: PMC6831412 DOI: 10.1097/md.0000000000016842] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
INTRODUCTION Engorgement of the epidural venous plexus (EVP) is a rare cause of nerve root impingement. Dilated epidural veins cause compression of the thecal sac and spinal nerve roots, leading to lumbar radiculopathy. PATIENT CONCERNS Here we describe a case of severe lumbar radiculopathy in a 15-year-old morbidly obese boy. DIAGNOSIS Enhanced lumbar magnetic resonance imaging revealed left sided L1-L2 disc protrusion and engorgement of the lumbar EVP, resulting in narrowing of the thecal sac in the entire lumbar spine. There was no evidence of an intra-abdominal mass, thrombosis of the inferior vena cava, or vascular malformation. INTERVENTIONS A caudal epidural block was administered under fluoroscopic guidance. The patient reported a 30% reduction in pain intensity for just 1 day. OUTCOMES The patient has been followed up for 2 years. He continues to take medication, including morphine sulfate 15 mg, gabapentin 300 mg, and oxycodone 20 mg per day. He is on a diet with exercise for weight reduction. CONCLUSION An engorged EVP should be considered in the differential diagnosis of radiculopathy in morbidly obese patients.
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Affiliation(s)
- Hee Joon Jeong
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, School of Medicine, Sungkyunkwan University
| | - Woo Seog Sim
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, School of Medicine, Sungkyunkwan University
| | - Hue Jung Park
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seung Hwan Lee
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Min Seok Oh
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, School of Medicine, Sungkyunkwan University
| | - Min Kyoung Cho
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, School of Medicine, Sungkyunkwan University
| | - Heui Jin Seon
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, School of Medicine, Sungkyunkwan University
| | - Jin Young Lee
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, School of Medicine, Sungkyunkwan University
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Majchrzak M, Brzecka A, Daroszewski C, Błasiak P, Rzechonek A, Tarasov VV, Chubarev VN, Kurinnaya AS, Melnikova TI, Makhmutova A, Klochkov SG, Somasundaram SG, Kirkland CE, Aliev G. Increased Pain Sensitivity in Obese Patients After Lung Cancer Surgery. Front Pharmacol 2019; 10:626. [PMID: 31258474 PMCID: PMC6586739 DOI: 10.3389/fphar.2019.00626] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 05/15/2019] [Indexed: 12/13/2022] Open
Abstract
Background: Obesity and cancer are recognized worldwide health threats. While there is no reported causal relationship, the increasing frequency of both conditions results in a higher incidence of obese patients who are being treated for cancer. Physiological data indicate that there is a relationship between obesity and susceptibility to pain; however, currently, there are no specific pharmacological interventions. Objective: To evaluate the self-reported intensity of postoperative pain in obese and nonobese lung cancer who receive either thoracotomy or video-assisted thoracic surgery (VATS) surgical therapy. Material and Methods: In 50 obese [mean body mass index (BMI) of 34.1 ± 3.2 kg/m2] and 62 nonobese (mean BMI of 24.9 ± 3 kg/m2) lung cancer patients, the intensity of pain was estimated every 4 h using a visual analog scale (VAS, 0 indicating no pain and 10 indicating “worst imaginable pain”) beginning shortly after surgery (Day O) and continuing until the day of discharge (Day D). Results: The self-reported pain was more severe in obese than in nonobese patients, both at the time of the operation [Day O (4.5 ± 1.2 vs 3.4 ± 1.1; p < 0.0001)] and at the day of discharge [Day D (3.9 ± 1.4 vs 2.6 ± 0.9, p < 0.0001)]. This finding was consistent both in the patients after thoracotomy and after video-assisted thoracic surgery (VATS, p < 0.0001). The patients with severe pain shortly after surgery (VAS score >4) had significantly higher BMI (31.8 ± 5.6 kg/m2vs 28.8 ± 5.2 kg/m2, p < 0.01) and were hospitalized longer than the remaining patients (13.0 ± 13.6 days vs 9.5 ± 3.6 days, p < 0.05). Conclusion: The reported perception of pain in obese lung cancer patients is greater than in nonobese patients undergoing the same thoracic surgery. In obese patients, severe pain persisted longer. Pain management is an important consideration in the postoperative care of lung cancer patients, even more so with obese patients.
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Affiliation(s)
- Maciej Majchrzak
- Department of Thoracic Surgery, Medical University in Wroclaw, Wroclaw, Poland
| | - Anna Brzecka
- Department of Pulmonology and Lung Cancer, Medical University in Wroclaw, Wroclaw, Poland
| | - Cyryl Daroszewski
- Department of Pulmonology and Lung Cancer, Medical University in Wroclaw, Wroclaw, Poland
| | - Piotr Błasiak
- Department of Thoracic Surgery, Medical University in Wroclaw, Wroclaw, Poland
| | - Adam Rzechonek
- Department of Thoracic Surgery, Medical University in Wroclaw, Wroclaw, Poland
| | - Vadim V Tarasov
- Department of Pharmacology and Pharmacy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Vladimir N Chubarev
- Department of Pharmacology and Pharmacy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Anastasiya S Kurinnaya
- Department of Pharmacology and Pharmacy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Tatiana I Melnikova
- Department of Pharmacology and Pharmacy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Alfiya Makhmutova
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, Chernogolovka, Russia
| | - Sergey G Klochkov
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, Chernogolovka, Russia
| | - Siva G Somasundaram
- Department of Biological Sciences, Salem University, Salem, WV, United States
| | - Cecil E Kirkland
- Department of Biological Sciences, Salem University, Salem, WV, United States
| | - Gjumrakch Aliev
- Department of Pharmacology and Pharmacy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.,Institute of Physiologically Active Compounds, Russian Academy of Sciences, Chernogolovka, Russia.,GALLY International Biomedical Research Institute, San Antonio, TX, United States
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Zhen Q, Yao N, Chen X, Zhang X, Wang Z, Ge Q. TOTAL BODY ADIPOSITY, TRIGLYCERIDES, AND LEG FAT ARE INDEPENDENT RISK FACTORS FOR DIABETIC PERIPHERAL NEUROPATHY IN CHINESE PATIENTS WITH TYPE 2 DIABETES MELLITUS. Endocr Pract 2019; 25:270-278. [PMID: 30913011 DOI: 10.4158/ep-2018-0459] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
OBJECTIVE To evaluate the risk factors associated with diabetic peripheral neuropathy (DPN) in Chinese patients with type 2 diabetes mellitus (T2DM). METHODS Between January 2014 and December 2017, 107 participants who had obesity with T2DM and 349 participants who had normal weight with T2DM, matched for age, sex, and duration of diabetes, were recruited. The clinical and biochemical parameters were measured in each patient. DPN was diagnosed based on neuropathy symptom score and neuropathy deficit score. Motor and sensory nerve conduction velocities were measured by electromyography. Body fat mass was estimated by dual-energy X-ray absorptiometry, while hepatic steatosis was evaluated by ultrasonography. RESULTS The group with obesity had a significant higher prevalence of DPN (66.62%) than that (46.99%) of the group with normal weight. Compared to the patients with normal weight, the sural sensory nerve in the right lower limbs of the patients with obesity was more susceptible to damage. Hypertriglyceridemia in the patients with obesity was a significant independent risk factor for DPN (odds ratio [OR], 3.90 [95% confidence interval (CI), 1.01 to 15.02]; P = .04), while the duration of diabetes (OR, 1.33 [95% CI, 1.07 to 1.65]; P<.01) and leg subcutaneous fat mass (OR, 0.72 [95% CI, 0.57 to 0.90]; P<.01) in the patients with normal weight were independent risk factors for DPN. The presence of obesity alone in patients with T2DM could predict high DPN risk (OR, 3.09 [95% CI, 1.11 to 8.65]; P = .04). CONCLUSION Reducing total body adiposity and triglyceride levels, as well as avoiding leg subcutaneous fat atrophy, could be new prevention strategies for DPN in Chinese patients with T2DM. ABBREVIATIONS ALB = albumin; ALT = alanine transaminase; AST = aspartate transaminase; AUC = area under the curve; AUCc-p/AUCglu = AUC of C-peptide/AUC of glucose; BMI = body mass index; BP = blood pressure; CI = confidence interval; Cr = creatinine; DBP = diastolic blood pressure; DPN = diabetic peripheral neuropathy; FC-P = fasting C-peptide; FPG = fasting plasma glucose; FFA = free fatty acid; γ-GGT = γ-glutamyl transferase; HbA1c = glycated hemoglobin A1c; HDL-C = high-density-lipoprotein cholesterol; ISI = insulin sensitivity index; ISSI-2 = insulin secretion-sensitivity index-2; LDL-C = low-density-lipoprotein cholesterol; MNCS = motor nerve conduction velocity; OGTT = oral glucose tolerance test; PG = plasma glucose; SAT = subcutaneous adipose tissue; SBP = systolic blood pressure; SNCS = sensory nerve conduction velocity; T2DM = type 2 diabetes mellitus; TC = total cholesterol; TG = triglyceride; UA = uric acid; VAT = visceral adipose tissue; WC = waist circumference.
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Gu Y, Dennis SM, Kiernan MC, Harmer AR. Aerobic exercise training may improve nerve function in type 2 diabetes and pre-diabetes: A systematic review. Diabetes Metab Res Rev 2019; 35:e3099. [PMID: 30462877 DOI: 10.1002/dmrr.3099] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 09/03/2018] [Accepted: 11/04/2018] [Indexed: 12/14/2022]
Abstract
Diabetic neuropathy is a major complication of type 2 diabetes. Emerging evidence also suggests that people with pre-diabetes may develop similar symptoms related to nerve dysfunction. While regular exercise provides many benefits to patients with diabetes, whether exercise influences nerve function has not been established. As such, the aim of this systematic review was to evaluate current evidence regarding the effect of exercise training on the progression and development of diabetic neuropathy. A systematic search of MEDLINE (Ovid), CINAHL, AMED, PEDro, the Cochrane Library, Embase, and Scopus databases identified a total of 12 studies that were eligible for inclusion in this systematic review. Quality rating and data extraction were performed by two independent reviewers. The 12 included studies examined people with pre-diabetes (n = 1) and with type 2 diabetes (n = 11). There was heterogeneity of study quality and exercise type and dosage among these studies. Eleven studies reported that exercise training had a positive influence on nerve function or neuropathy-related symptoms; and only one study reported mild adverse events. Evidence from this systematic review suggests aerobic exercise training may positively influence nerve function among people with type 2 diabetes, with minimal risk of adverse events. Further research will be required to determine the optimal dosage of exercise training and the effect on nerve function in pre-diabetes and in women with previous gestational diabetes. This review is registered on PROSPERO (CRD42018088182).
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Affiliation(s)
- Yu Gu
- Musculoskeletal Health Research Group, Faculty of Health Sciences, The University of Sydney, Lidcombe, NSW, Australia
- Physiotherapy Department, Royal Prince Alfred Hospital, Sydney Local Health District, Camperdown, NSW, Australia
| | - Sarah M Dennis
- Ingham Institute for Applied Medical Research, South Western Sydney Local Health District, Liverpool, NSW, Australia
- Physical Activity, Lifestyle, Ageing & Wellness Research Group, Faculty of Health Sciences, The University of Sydney, Lidcombe, NSW, Australia
| | - Matthew C Kiernan
- Discovery and Translation, Brain and Mind Centre, The University of Sydney, Camperdown, NSW, Australia
| | - Alison R Harmer
- Musculoskeletal Health Research Group, Faculty of Health Sciences, The University of Sydney, Lidcombe, NSW, Australia
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Do Changes in Sensory Processing Precede Low Back Pain Development in Healthy Individuals? Clin J Pain 2018; 34:525-531. [DOI: 10.1097/ajp.0000000000000563] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Hanewinckel R, Ikram MA, Franco OH, Hofman A, Drenthen J, van Doorn PA. High body mass and kidney dysfunction relate to worse nerve function, even in adults without neuropathy. J Peripher Nerv Syst 2018; 22:112-120. [PMID: 28429469 DOI: 10.1111/jns.12211] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 03/12/2017] [Accepted: 03/14/2017] [Indexed: 02/03/2023]
Abstract
Polyneuropathy is a prevalent and disabling disorder. Despite extensive evaluation, the cause often remains unknown. Factors that predispose for the development of polyneuropathy need to be identified. We investigated the effect of anthropometric and metabolic factors on peripheral nerve function in 908 participants of the population-based Rotterdam Study without any symptoms or signs of polyneuropathy. Participants underwent nerve conduction studies of the sural and peroneal nerve. Data on age, height, weight, waist circumference, diabetes, lipid levels, hypertension, and kidney function were collected. Regression analyses were used to investigate determinants of nerve action potential amplitudes. The frequency of abnormal sural sensory nerve action potential (SNAP) amplitudes increased with age from 1% under 60 years to 23% over 80 years. Similarly, the frequency of abnormal peroneal nerve compound motor action potential (CMAP) amplitudes increased from 4% to 13%. High weight and body mass index were independently associated with reduced sural SNAP amplitudes and peroneal CMAP amplitudes. Participants with hypertension and kidney dysfunction were more likely to have abnormal sural SNAP amplitudes. Older age, high weight, hypertension, and moderate kidney dysfunction might thus lead to peripheral nerve dysfunction in persons yet without symptoms or signs of polyneuropathy.
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Affiliation(s)
- Rens Hanewinckel
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Neurology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - M Arfan Ikram
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Oscar H Franco
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Albert Hofman
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Judith Drenthen
- Department of Neurology, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Neurophysiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Pieter A van Doorn
- Department of Neurology, Erasmus University Medical Center, Rotterdam, The Netherlands
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Salaffi F, Giacobazzi G, Di Carlo M. Chronic Pain in Inflammatory Arthritis: Mechanisms, Metrology, and Emerging Targets-A Focus on the JAK-STAT Pathway. Pain Res Manag 2018; 2018:8564215. [PMID: 29623147 PMCID: PMC5829432 DOI: 10.1155/2018/8564215] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 12/13/2017] [Indexed: 12/14/2022]
Abstract
Chronic pain is nowadays considered not only the mainstay symptom of rheumatic diseases but also "a disease itself." Pain is a multidimensional phenomenon, and in inflammatory arthritis, it derives from multiple mechanisms, involving both synovitis (release of a great number of cytokines) and peripheral and central pain-processing mechanisms (sensitization). In the last years, the JAK-STAT pathway has been recognized as a pivotal component both in the inflammatory process and in pain amplification in the central nervous system. This paper provides a summary on pain in inflammatory arthritis, from pathogenesis to clinimetric instruments and treatment, with a focus on the JAK-STAT pathway.
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Affiliation(s)
- Fausto Salaffi
- Rheumatology Department, Università Politecnica delle Marche, Jesi, Ancona, Italy
| | | | - Marco Di Carlo
- Rheumatology Department, Università Politecnica delle Marche, Jesi, Ancona, Italy
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Jakhotia S, Sivaprasad M, Shalini T, Reddy PY, Viswanath K, Jakhotia K, Sahay R, Sahay M, Reddy GB. Circulating levels of Hsp27 in microvascular complications of diabetes: Prospects as a biomarker of diabetic nephropathy. J Diabetes Complications 2018; 32:221-225. [PMID: 29175119 DOI: 10.1016/j.jdiacomp.2017.10.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 09/26/2017] [Accepted: 10/04/2017] [Indexed: 10/18/2022]
Abstract
AIM Heat shock protein 27 (Hsp27) is a small heat shock protein known to protect the cells from apoptosis under stress. In the present study, we determined the plasma Hsp27 levels in type 2 diabetes subjects without and with microvascular complications- diabetic retinopathy (DRe), diabetic nephropathy (DNe), and diabetic neuropathy (DNu) to understand if it could serve as a marker for these complications. METHODS This is a hospital-based case-control study with 754 subjects including 247 controls, 195 subjects with diabetes, 123 with DRe, 80 with DNe and 109 with DNu. Plasma Hsp27 levels were measured by ELISA. RESULTS The mean plasma Hsp27 was higher in the DNe group (631.5±355.2) compared to the control (496.55±308.54), diabetes (523.41±371.01), DRe (494.60±391.48) and DNu (455.21±319.74) groups with a p-value of 0.018. Receiver operating characteristic (ROC) curve analysis of Hsp27 in DNe group showed an area under the curve (AUC) of 0.617. Spearman correlation analysis shows a positive correlation of plasma Hsp27 with serum creatinine (p=0.053, r-value 0.083). Gender, age and BMI did not affect the plasma Hsp27 levels. CONCLUSION The plasma Hsp27 levels in the DNe group are higher compared to the control and other complications, thereby it could be explored to be used as a potential biomarker of DNe.
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Affiliation(s)
- Sneha Jakhotia
- Biochemistry, National Institute of Nutrition, Hyderabad, India
| | | | - Tattari Shalini
- Biochemistry, National Institute of Nutrition, Hyderabad, India
| | | | | | | | - Rakesh Sahay
- Osmania Medical College and General Hospital, Hyderabad, India
| | - Manisha Sahay
- Osmania Medical College and General Hospital, Hyderabad, India
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Scarpina F, Cau N, Cimolin V, Galli M, Castelnuovo G, Priano L, Pianta L, Corti S, Mauro A, Capodaglio P. Body-scaled action in obesity during locomotion: Insights on the nature and extent of body representation disturbances. J Psychosom Res 2017; 102:34-40. [PMID: 28992895 DOI: 10.1016/j.jpsychores.2017.09.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 08/23/2017] [Accepted: 09/01/2017] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Conscious perception of our own body, also known as body image, can influence body-scaled actions. Certain conditions such as obesity are frequently accompanied by a negative body image, leaving open the question if body-scaled actions are distorted in these individuals. METHODS To shed light on this issue, we asked individuals affected by obesity to process dimensions of their own body in a real action: they walked in a straight-ahead direction, while avoiding collision with obstacles represented by door-like openings that varied in width. RESULTS Participants affected by obesity showed a body rotation behavior similar to that of the healthy weighted, but differences emerged in parameters such as step length and velocity. CONCLUSION When participants with obesity walk through door-like openings, their body parts rotation is scaled according to their physical body dimensions; however, they might try to minimize risk of collision. Our study is in line with the hypothesis that unconscious body-scaled actions are related to emotional, cognitive and perceptual components of a negative body image.
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Affiliation(s)
- Federica Scarpina
- "Rita Levi Montalcini" Department of Neuroscience, University of Turin, Turin, Italy; Psychology Research Laboratory, IRCCS Istituto Auxologico Italiano, Ospedale San Giuseppe, Piancavallo (VCO), Italy.
| | - Nicola Cau
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Veronica Cimolin
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Manuela Galli
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy; IRCCS "San Raffaele Pisana", Tosinvest Sanità, Rome, Italy
| | - Gianluca Castelnuovo
- Psychology Research Laboratory, IRCCS Istituto Auxologico Italiano, Ospedale San Giuseppe, Piancavallo (VCO), Italy; Department of Psychology, Università Cattolica del Sacro Cuore, Milan, Italy
| | - Lorenzo Priano
- "Rita Levi Montalcini" Department of Neuroscience, University of Turin, Turin, Italy; Division of Neurology and Neuro-Rehabilitation, IRCCS Istituto Auxologico Italiano, Ospedale San Giuseppe, Piancavallo (VCO), Italy
| | - Lucia Pianta
- Division of Neurology and Neuro-Rehabilitation, IRCCS Istituto Auxologico Italiano, Ospedale San Giuseppe, Piancavallo (VCO), Italy; Research Laboratory in Biomechanics and Rehabilitation, Orthopedic Rehabilitation Unit, IRCCS Istituto Auxologico Italiano, Ospedale San Giuseppe, Piancavallo (VCO), Italy
| | - Stefania Corti
- Psychology Research Laboratory, IRCCS Istituto Auxologico Italiano, Ospedale San Giuseppe, Piancavallo (VCO), Italy
| | - Alessandro Mauro
- "Rita Levi Montalcini" Department of Neuroscience, University of Turin, Turin, Italy; Division of Neurology and Neuro-Rehabilitation, IRCCS Istituto Auxologico Italiano, Ospedale San Giuseppe, Piancavallo (VCO), Italy
| | - Paolo Capodaglio
- Research Laboratory in Biomechanics and Rehabilitation, Orthopedic Rehabilitation Unit, IRCCS Istituto Auxologico Italiano, Ospedale San Giuseppe, Piancavallo (VCO), Italy
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Ratner S, Khwaja R, Zhang L, Xi Y, Dessouky R, Rubin C, Chhabra A. Sciatic neurosteatosis: Relationship with age, gender, obesity and height. Eur Radiol 2017; 28:1673-1680. [PMID: 29063256 DOI: 10.1007/s00330-017-5087-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 08/26/2017] [Accepted: 09/22/2017] [Indexed: 12/24/2022]
Abstract
AIM To evaluate inter-reader performance for cross-sectional area and fat quantification of bilateral sciatic nerves on MRI and assess correlations with anthropometrics. METHODS In this IRB-approved, HIPPA-compliant study, three readers performed a cross-sectional analysis of 3T lumbosacral plexus MRIs over an 18-month period. Image slices were evaluated at two levels (A and B). The sciatic nerve was outlined using a free hand region of interest tool on PACS. Proton-density fat fraction (FF) and cross-sectional areas were recorded. Inter-reader agreement was assessed using intra-class correlation coefficient (ICC). Spearman correlation coefficients were used for correlations with age, BMI and height and Wilcoxon rank sum test was used to assess gender differences. RESULTS A total of 67 patients were included in this study with male to female ratio of 1:1. Inter-reader agreement was good to excellent for FF measurements at both levels (ICC=0.71-0.90) and poor for sciatic nerve areas (ICC=0.08-0.27). Positive correlations of sciatic FF and area were seen with age (p value<0.05). Males had significantly higher sciatic intraneural fat than females (p<0.05). CONCLUSION Fat quantification MRI is highly reproducible with significant positive correlations of sciatic FF and area with age, which may have implications for MRI diagnosis of sciatic neuropathy. KEY POINTS • MR proton density fat fraction is highly reproducible at multiple levels. • Sciatic intraneural fat is positively correlated with increasing age (p < 0.05). • Positive correlations exist between bilateral sciatic nerve areas and age (p < 0.05). • Males had significantly higher sciatic intraneural fat than females (p < 0.05).
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Affiliation(s)
- Shayna Ratner
- Department of Radiology, UT Southwestern Medical Center, Dallas, TX, USA
| | - Raamis Khwaja
- Department of Radiology, UT Southwestern Medical Center, Dallas, TX, USA
| | - Lihua Zhang
- Department of Radiology, UT Southwestern Medical Center, Dallas, TX, USA.,Radiology, Peking University Third Hospital, Beijing, China
| | - Yin Xi
- Department of Radiology, UT Southwestern Medical Center, Dallas, TX, USA
| | - Riham Dessouky
- Department of Radiology, UT Southwestern Medical Center, Dallas, TX, USA.,Radiology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Craig Rubin
- Geriatric division, Internal Medicine, UT Southwestern Medical Center, Dallas, TX, USA
| | - Avneesh Chhabra
- Department of Radiology, UT Southwestern Medical Center, Dallas, TX, USA. .,Departments of Radiology and Orthopedic Surgery and Musculoskeletal Radiology, UT Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390-9178, USA.
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44
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Association of Insulin and Cholesterol Levels With Peripheral Nervous System Function in Overweight Adults: A 3-Year Follow-up. J Clin Neurophysiol 2017; 34:492-496. [PMID: 29023304 DOI: 10.1097/wnp.0000000000000425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
PURPOSE The purpose of this prospective 3-year follow-up was to investigate the association of glucose, insulin, and cholesterol levels with peripheral nervous system function in overweight and obese subjects. METHODS Forty nondiabetic overweight and obese adults were enrolled, of whom 29 completed the follow-up. Peripheral nervous system function was measured and defined by conduction studies of the peroneal motor nerve and the radial, sural, and medial plantar sensory nerves. Serum insulin and glucose levels were determined with an oral glucose tolerance test, and cholesterol levels were measured. The measurements were performed at baseline and after 3 years. RESULTS The change in serum insulin level at 120 minutes after an oral glucose tolerance test was positively associated with changes in peroneal nerve conduction velocities and F-wave mean, sural nerve conduction and medial plantar nerve conduction velocities. Action potential amplitudes decreased consistently and significantly in all sensory nerves. CONCLUSIONS The change in serum insulin level at 120 minutes appears to be positively associated with changes in nerve conduction velocities more than 3 years but not with nerve action potential amplitudes. Significant decreases in the action potential amplitudes of all sensory nerves suggest that such changes might be the earliest detectable sign of damage to the peripheral nervous system in overweight and obese people without type 2 diabetes.
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Xiong Y, Page JC, Narayanan N, Wang C, Jia Z, Yue F, Shi X, Jin W, Hu K, Deng M, Shi R, Shan T, Yang G, Kuang S. Peripheral Neuropathy and Hindlimb Paralysis in a Mouse Model of Adipocyte-Specific Knockout of Lkb1. EBioMedicine 2017; 24:127-136. [PMID: 29032027 PMCID: PMC5652135 DOI: 10.1016/j.ebiom.2017.09.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 09/11/2017] [Accepted: 09/14/2017] [Indexed: 01/11/2023] Open
Abstract
Brown adipose tissues (BAT) burn lipids to generate heat through uncoupled respiration, thus representing a powerful target to counteract lipid accumulation and obesity. The tumor suppressor liver kinase b1 (Lkb1) is a key regulator of cellular energy metabolism; and adipocyte-specific knockout of Lkb1 (Ad-Lkb1 KO) leads to the expansion of BAT, improvements in systemic metabolism and resistance to obesity in young mice. Here we report the unexpected finding that the Ad-Lkb1 KO mice develop hindlimb paralysis at mid-age. Gene expression analyses indicate that Lkb1 KO upregulates the expression of inflammatory cytokines in interscapular BAT and epineurial brown adipocytes surrounding the sciatic nerve. This is followed by peripheral neuropathy characterized by infiltration of macrophages into the sciatic nerve, axon degeneration, reduced nerve conductance, and hindlimb paralysis. Mechanistically, Lkb1 KO reduces AMPK phosphorylation and amplifies mammalian target-of-rapamycin (mTOR)-dependent inflammatory signaling specifically in BAT but not WAT. Importantly, pharmacological or genetic inhibition of mTOR ameliorates inflammation and prevents paralysis. These results demonstrate that BAT inflammation is linked to peripheral neuropathy.
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Affiliation(s)
- Yan Xiong
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China; Department of Animal Sciences, Purdue University, West Lafayette, IN 47906, USA; Joint Laboratory of Lipid Metabolism, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, China
| | - Jessica C Page
- Department of Basic Medical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN 47906, USA
| | - Naagarajan Narayanan
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47906, USA; Bindley Bioscience Center, Purdue University, West Lafayette, IN 47906, USA
| | - Chao Wang
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47906, USA
| | - Zhihao Jia
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47906, USA
| | - Feng Yue
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47906, USA
| | - Xine Shi
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Wen Jin
- Joint Laboratory of Lipid Metabolism, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, China
| | - Keping Hu
- Joint Laboratory of Lipid Metabolism, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, China
| | - Meng Deng
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47906, USA; Bindley Bioscience Center, Purdue University, West Lafayette, IN 47906, USA; Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47906, USA; School of Materials Engineering(,) Purdue University, West Lafayette, IN 47907, USA
| | - Riyi Shi
- Department of Basic Medical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN 47906, USA; Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47906, USA; Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47906, USA
| | - Tizhong Shan
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47906, USA
| | - Gongshe Yang
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China.
| | - Shihuan Kuang
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47906, USA; Joint Laboratory of Lipid Metabolism, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, China.
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Song T, Zhao J, Ma X, Zhang Z, Jiang B, Yang Y. Role of sigma 1 receptor in high fat diet-induced peripheral neuropathy. Biol Chem 2017; 398:1141-1149. [PMID: 28525360 DOI: 10.1515/hsz-2017-0117] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 04/27/2017] [Indexed: 12/16/2023]
Abstract
The neurobiological mechanisms of obesity-induced peripheral neuropathy are poorly understood. We evaluated the role of Sigma-1 receptor (Sig-1R) and NMDA receptor (NMDARs) in the spinal cord in peripheral neuropathy using an animal model of high fat diet-induced diabetes. We examined the expression of Sig-1R and NMDAR subunits GluN2A and GluN2B along with postsynaptic density protein 95 (PSD-95) in the spinal cord after 24-week HFD treatment in both wild-type and Sig-1R-/- mice. Finally, we examined the effects of repeated intrathecal administrations of selective Sig-1R antagonists BD1047 in HFD-fed wild-type mice on peripheral neuropathy. Wild-type mice developed tactile allodynia and thermal hypoalgesia after 24-week HFD treatment. HFD-induced peripheral neuropathy correlated with increased expression of GluN2A and GluN2B subunits of NMDARs, PDS-95, and Sig-1R, as well as increased Sig-1R-NMDAR interaction in the spinal cord. In contrast, Sig-1R-/- mice did not develop thermal hypoalgesia or tactile allodynia after 24-week HFD treatment, and the levels of GluN2A, GluN2B, and PSD-95 were not altered in the spinal cord of HFD-fed Sig-1R-/- mice. Finally, repeated intrathecal administrations of selective Sig-1R antagonists BD1047 in HFD-fed wild-type mice attenuated peripheral neuropathy. Our results suggest that obesity-associated peripheral neuropathy may involve Sig-1R-mediated enhancement of NMDAR expression in the spinal cord.
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Onger ME, Kaplan S, Geuna S, Türkmen AP, Muratori L, Altun G, Altunkaynak BZ. Possible effects of some agents on the injured nerve in obese rats: A stereological and electron microscopic study. J Craniomaxillofac Surg 2017; 45:1258-1267. [DOI: 10.1016/j.jcms.2017.05.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 03/30/2017] [Accepted: 05/03/2017] [Indexed: 01/01/2023] Open
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Delgado-López PD, Castilla-Díez JM. [Impact of obesity in the pathophysiology of degenerative disk disease and in the morbidity and outcome of lumbar spine surgery]. Neurocirugia (Astur) 2017; 29:93-102. [PMID: 28750870 DOI: 10.1016/j.neucir.2017.06.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 06/17/2017] [Accepted: 06/26/2017] [Indexed: 01/05/2023]
Abstract
Obesity (BMI>30Kg/m2) is a pandemic with severe medical and financial implications. There is growing evidence that relates certain metabolic processes within the adipose tissue, preferentially abdominal fat, with a low-intensity chronic inflammatory state mediated by adipokines and other substances that favor disk disease and chronic low back pain. Obesity greatly conditions both the preoperative evaluation and the spinal surgical technique itself. Some meta-analyses have confirmed an increase of complications following lumbar spine surgery (mainly infections and venous thrombosis) in obese subjects. However, functional outcomes after lumbar spine surgery are favorable although inferior to the non-obese population, acknowledging that obese patients present with worse baseline function levels and the prognosis of conservatively treated obese cohorts is much worse. The impact of preoperative weight loss in spine surgery has not been prospectively studied in these patients.
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49
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Gonzalez EJ, Grill WM. The effects of neuromodulation in a novel obese-prone rat model of detrusor underactivity. Am J Physiol Renal Physiol 2017. [PMID: 28637788 DOI: 10.1152/ajprenal.00242.2017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Obesity is a global epidemic associated with an increased risk for lower urinary tract dysfunction. Inefficient voiding and urinary retention may arise in late-stage obesity when the expulsive force of the detrusor smooth muscle cannot overcome outlet resistance. Detrusor underactivity (DUA) and impaired contractility may contribute to the pathogenesis of nonobstructive urinary retention. We used cystometry and electrical stimulation of peripheral nerves (pudendal and pelvic nerves) to characterize and improve bladder function in urethane-anesthetized obese-prone (OP) and obese-resistant (OR) rats following diet-induced obesity (DIO). OP rats exhibited urinary retention and impaired detrusor contractility following DIO, reflected as increased volume threshold, decreased peak micturition pressure, and decreased voiding efficiency (VE) compared with OR rats. Electrical stimulation of the sensory branch of the pudendal nerve did not increase VE, whereas patterned bursting stimulation of the motor branch of the pudendal nerve increased VE twofold in OP rats. OP rats required increased amplitude of electrical stimulation of the pelvic nerve to elicit bladder contractions, and maximum evoked bladder contraction amplitudes were decreased relative to OR rats. Collectively, these studies characterize a novel animal model of DUA that can be used to determine pathophysiology and suggest that neuromodulation is a potential management option for DUA.
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Affiliation(s)
- Eric J Gonzalez
- Department of Biomedical Engineering, Duke University, Durham, North Carolina
| | - Warren M Grill
- Department of Biomedical Engineering, Duke University, Durham, North Carolina; .,Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina.,Department of Neurobiology, Duke University, Durham, North Carolina; and.,Department of Neurosurgery, Duke University, Durham, North Carolina
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50
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Burström L, Björ B, Nilsson T, Pettersson H, Rödin I, Wahlström J. Thermal perception thresholds among workers in a cold climate. Int Arch Occup Environ Health 2017; 90:645-652. [PMID: 28497276 PMCID: PMC5583265 DOI: 10.1007/s00420-017-1227-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 05/03/2017] [Indexed: 11/27/2022]
Abstract
Purpose To investigate whether exposure to cold could influence the thermal perception thresholds in a working population. Methods This cross-sectional study was comprised of 251 males and females and was carried out at two mines in the northern part of Norway and Sweden. The testing included a baseline questionnaire, a clinical examination and measurements of thermal perception thresholds, on both hands, the index (Digit 2) and little (Digit 5) fingers, for heat and cold. Results The thermal perception thresholds were affected by age, gender and test site. The thresholds were impaired by experiences of frostbite in the fingers and the use of medication that potentially could affect neurosensory functions. No differences were found between the calculated normative values for these workers and those in other comparative investigations conducted in warmer climates. Conclusions The study provided no support for the hypothesis that living and working in cold climate will lead to impaired thermal perception thresholds. Exposure to cold that had caused localized damage in the form of frostbite was shown to lead to impaired thermal perception.
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Affiliation(s)
- Lage Burström
- Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, Umeå University, 901 87, Umeå, Sweden. .,Arcum, Umeå University, Umeå, Sweden.
| | - Bodil Björ
- Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, Umeå University, 901 87, Umeå, Sweden.,Arcum, Umeå University, Umeå, Sweden
| | - Tohr Nilsson
- Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, Umeå University, 901 87, Umeå, Sweden.,Arcum, Umeå University, Umeå, Sweden
| | - Hans Pettersson
- Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, Umeå University, 901 87, Umeå, Sweden.,Arcum, Umeå University, Umeå, Sweden
| | - Ingemar Rödin
- Department of Occupational and Environmental Medicine, University Hospital of North Norway, Tromsø, Norway.,Swedish Work Environment Authority, Stockholm, Sweden
| | - Jens Wahlström
- Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, Umeå University, 901 87, Umeå, Sweden.,Arcum, Umeå University, Umeå, Sweden
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