scholarly journals The Association Between Loneliness and Inflammation: Findings From an Older Adult Sample

2022 ◽  
Vol 15 ◽  
Author(s):  
Karina Van Bogart ◽  
Christopher G. Engeland ◽  
Martin J. Sliwinski ◽  
Karra D. Harrington ◽  
Erik L. Knight ◽  
...  

Loneliness has been linked to poor mental and physical health outcomes. Past research suggests that inflammation is a potential pathway linking loneliness and health, but little is known about how loneliness assessed in daily life links with inflammation, or about linkages between loneliness and inflammation among older adults specifically. As part of a larger investigation, we examined the cross-sectional associations between loneliness and a panel of both basal and LPS-stimulated inflammatory markers. Participants were 222 socioeconomically and racially diverse older adults (aged 70–90 years; 38% Black; 13% Hispanic) systematically recruited from the Bronx, NY. Loneliness was measured in two ways, with a retrospective trait measure (the UCLA Three Item Loneliness Scale) and an aggregated momentary measure assessed via ecological momentary assessment (EMA) across 14 days. Inflammatory markers included both basal levels of C-reactive protein (CRP) and cytokines (IL-1β, IL-4, IL-6, IL-8, IL-10, TNF-α) and LPS-stimulated levels of the same cytokines. Multiple regression analyses controlled for age, body-mass index, race, and depressive symptoms. Moderation by gender and race were also explored. Both higher trait loneliness and aggregated momentary measures of loneliness were associated with higher levels of CRP (β = 0.16, p = 0.02; β = 0.15, p = 0.03, respectively). There were no significant associations between loneliness and basal or stimulated cytokines and neither gender nor race were significant moderators. Results extend prior research linking loneliness with systemic inflammation in several ways, including by examining this connection among a sample of older adults and using a measure of aggregated momentary loneliness.

Gerontology ◽  
2016 ◽  
Vol 63 (1) ◽  
pp. 3-12 ◽  
Author(s):  
Vahid Eslami ◽  
Mindy J. Katz ◽  
Robert S. White ◽  
Erin Sundermann ◽  
Julie M. Jiang ◽  
...  

Background: Among older adults, pain intensity and pain interference are more common in women than men and associated with obesity and inflammatory markers. Objective: We examined whether the obesity and pain relationship is mediated by the high-sensitivity C-reactive protein (hsCRP), a nonspecific marker of systemic inflammation, and whether this relationship differs by sex. Methods: Items from Medical Outcomes Study Short Form-36 were used to measure pain intensity and pain interference in daily life. Ordinal logistic regression was used to assess the cross-sectional association among body mass index (BMI), hsCRP levels, pain intensity and pain interference using gender-stratified models adjusted for demographic variables. Results: Participants included 667 community-residing adults over the age of 70 years, free of dementia, enrolled in the Einstein Aging Study (EAS). In women (n = 410), pain intensity was associated with obesity [BMI ≥30 vs. normal, odds ratio (OR) = 2.29, 95% confidence interval (CI) 1.43-3.68] and higher hsCRP (OR = 1.28, 95% CI 1.08-1.51). In a model with obesity and hsCRP, both remained significant, but the association between hsCRP and pain intensity was somewhat attenuated. Obesity (OR = 3.04, 95% CI 1.81-5.11) and higher hsCRP levels (OR = 1.30, 95% CI 1.08-1.56) were also independently associated with greater pain interference in women. After adjustment for pain intensity and BMI, hsCRP was no longer associated with pain interference in women. Greater pain intensity and being overweight or obese continued to be significantly associated with pain interference in women. In men (n = 257), obesity and hsCRP were not associated with pain intensity or pain interference. Conclusions: In women, the relationship between obesity and higher levels of pain intensity or interference may be accounted for by factors related to hsCRP.


2007 ◽  
Vol 157 (4) ◽  
pp. 419-426 ◽  
Author(s):  
David H St-Pierre ◽  
Jean-Philippe Bastard ◽  
Lise Coderre ◽  
Martin Brochu ◽  
Antony D Karelis ◽  
...  

Objective: Recent reports have suggested that the existence of associations between hormonal dysregulation and chronic upregulation of inflammatory markers, which may cause obesity-related disturbances. Thus, we examined whether acylated ghrelin (AcylG) and total ghrelin (TotG) levels could be associated with the following inflammatory markers: C-reactive protein (CRP), tumor necrosis factor α (TNF-α), and soluble TNF receptor 1 (sTNF-R1). Design: Cross-sectional study consisting of 50 overweight and obese postmenopausal women. Methods: AcylG and TotG levels were assessed at 0, 60, 160, 170, and 180 min of the euglycemic/hyperinsulinemic clamp (EHC). We evaluated insulin sensitivity, body composition, and blood lipid profiles as well as fasting concentrations of CRP, TNF-α, and sTNF-R1. Results: In fasting conditions, sTNF-R1 was negatively correlated with AcylG (r = −0.48, P < 0.001) levels. In addition, AcylG/TotG was associated negatively with sTNF-R1 (r = −0.44, P = 0.002) and positively with TNF-α (r = 0.38, P = 0.009) values. During the EHC, TotG (at all time points) and AcylG (at 60 and 160 min) values were significantly decreased from fasting concentrations. AcylG maximal reduction and area under the curve (AUC) values were correlated to sTNF-R1 (r = −0.35, P = 0.02 and r = −0.34, P = 0.02, respectively). Meanwhile, the AcylG/TotG AUC ratio was associated negatively with sTNF-R1 (r = −0.29, P < 0.05) and positively with TNF-α (r = 0.36, P = 0.02). Following adjustments for total adiposity, sTNF-R1 remained correlated with fasting and maximal reduction AcylG values. Similarly, AcylG/TotG ratios remained significantly correlated with sTNF-R1 and TNF-α. Importantly, 23% of the variation in sTNF-R1 was independently predicted by fasting AcylG. Conclusion: These results are the first to suggest that both fasting and EHC-induced AcylG profiles are correlated with fasting values of sTNF-R1, a component of the TNF-α system. Thus, AcylG may act, at least in part, as one mediator of chronic inflammatory activity in human obesity.


Author(s):  
Néstor Agra ◽  
Ana Teresa Afonso ◽  
Antón Sande ◽  
Ignacio Veleiro ◽  
José Enrique Paz ◽  
...  

IntroductionInflammatory status could play a role in alterations of blood pressure (BP) circadian rhythm. The aim of our study is to compare levels of usual inflammatory markers in patients with and without circadian BP abnormalities.Material and methodsThis is a cross-sectional design study with retrospective data analysis which included patients from an Internal Medicine Department with normal and high BP levels older than 18 years who were separated into two groups according to the circadian profile of BP (dipper and non-dipper) based on the results of 24-hour ambulatory BP monitoring. Patients were assessed for demographic characteristics and cardiovascular risk factors. We considered as inflammatory markers the platelet count (PTC), erythrocyte sedimentation rate (ESR), ultra-sensitive C-reactive protein, ferritin, fibrinogen, and uric acid.ResultsThe study included 551 patients (mean age of 54 years, 47% women). The non-dipper group had a higher percentage of individuals with higher ESR (OR = 1.77, 95% CI: 1.23–1.55, p = 0.001), uric acid (OR = 1.50, 95% CI: 1.04–2.16, p = 0.028) and fibrinogen (OR = 1.72, 95% CI: 1.18–2.51, p = 0.001) and a higher percentage of patients with higher PTC (OR = 0.54, 95% CI: 0.37–0.78, p = 0.005). These results were independent of age, waist circumference, presence of arterial hypertension, diabetes or hyperlipidemia, and use of antihypertensive drugs including renin angiotensin aldosterone system blockers.ConclusionsPatients with impaired circadian BP rhythm were associated with an unfavorable inflammatory status independently of BP levels. This fact could play a role in the prognostic differences observed between dipper and non-dipper patients.


2018 ◽  
Vol 25 (10-11) ◽  
pp. 1384-1395 ◽  
Author(s):  
Sheena Mirpuri ◽  
Alex Ocampo ◽  
Bharat Narang ◽  
Nicole Roberts ◽  
Francesca Gany

Discrimination is associated with poorer mental and physical health outcomes. Taxi drivers have a higher risk of exposure to discrimination and higher rates of chronic conditions. A cross-sectional needs assessment was conducted with a multilingual group of 535 male taxi drivers in New York City. Drivers reporting higher discrimination were more likely to have higher perceived stress and were more likely to have anxiety/depression and chronic pain, adjusting for confounders. Workplace-based interventions designed to help drivers cope with discrimination, stress, and chronic health conditions, interventions to educate the taxi-riding public, and greater attention to these issues from administrative agencies are warranted.


2020 ◽  
Vol 36 (4) ◽  
Author(s):  
Hina Riaz Ahmed ◽  
Binafsha Manzoor Syed ◽  
Zulfiqar Laghari ◽  
Suleman Pirzada

Objective: This study aimed to evaluate pattern of markers of inflammation in apparently healthy drivers who exposed to traffic fumes. Methods: This cross-sectional study was conducted from June 2016 to January 2017 at Liaquat University of Medical & Health Sciences (LUMHS), Jamshoro. It looked into the effects of traffic pollutants on markers of inflammation including CRP, Leukocytes count, IL-6, TNF-α, TNF-β of healthy human volunteers. Eighty-seven, apparently healthy, non-smoking automobile vehicle drivers, having daily contact of traffic exhaust for at least six hours, aged between 18-40 years recruited for this study. Levels of traffic-generated pollutants P.M2.5, P.M10, NOx were recorded in different areas of Hyderabad City. Results: P.M2.5 found to be positively correlated with markers of inflammation including IL-6 (rs = 0.99), TNF-α (rs = 0.41), CRP mg/dl (rs = 0.99) , neutrophils (rs = 0.29), lymphocytes (rs = 0.31), eosinophils (rs = 0.20), monocytes (rs = 0.42) and basophils (rs = 0.16). Positive correlation present among IL-6 (rs = 0.21), TNF-α (rs = 0.49) and CRP mg/dl (rs = 0.22) (rs = -0.31), Leukocytes (rs = 0.14) neutrophils (rs = 0.31), lymphocytes (rs = 0.21), monocytes (rs = 0.50), basophils (rs = 0.17) with P.M10. NOx showed positive correlation with IL-6 (rs = 0.22), TNF-α (rs = 0.48), CRP (rs = 0.22), neutrophils (rs = 0.31), lymphocytes (rs = 0.13), basophils (rs = 0.17) and monocytes (rs = 0.48). Conclusion: Findings of our study suggest that almost all markers of inflammation are positively correlated with traffic pollutants and this condition might raise the risk of systemic diseases. doi: https://doi.org/10.12669/pjms.36.4.2025 How to cite this:Riaz H, Syed BM, Laghari Z, Pirzada S. Analysis of inflammatory markers in apparently healthy automobile vehicle drivers in response to exposure to traffic pollution fumes. Pak J Med Sci. 2020;36(4):---------. doi: https://doi.org/10.12669/pjms.36.4.2025 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


2020 ◽  
Vol 20 (6) ◽  
pp. 924-929
Author(s):  
Khalid Siddiqui ◽  
Teena P. George ◽  
Salini Scaria Joy ◽  
Muhammad Mujammami

Background: A possible relationship between thyroid hormones and glucose metabolism in diabetes has already been established. Objectives: We aimed to evaluate the thyroid function markers and their relationship with inflammation, which is considered as a pathogenic condition of diabetes. Methods: This cross-sectional study included 276 patients with type 2 diabetes. Serum levels of thyroid (TSH, FT4, and FT3) and inflammatory markers (CRP, IL-6, and TNF-α) were measured. Results: The mean age of the subjects was 55.2 years and mean diabetes duration of 16.8 years. The inflammatory markers showed significant differences with the tertiles of TSH and thyroid hormones. TSH was significantly correlated with inflammatory markers, IL-6 (r = 0.13, P = 0.020) and TNF-α (r = 0.17, P = 0.003), while FT4 had a correlation only with TNF-α (r = 0.25, P = <0.001). FT3 was negatively correlated with inflammatory marker IL-6 (r = -0.14, P = 0.020), HbA1c (r = -0.12, P = 0 .040), and HOMA-IR (r = -0.17, P = 0.010). Conclusion: Abnormalities in the thyroid hormone metabolism are related to the increased inflammatory activity as well as insulin resistance, and are associated with the disorders of glucose metabolism.


2012 ◽  
Vol 109 (4) ◽  
pp. 686-694 ◽  
Author(s):  
Gerardo Zavala ◽  
Kurt Z. Long ◽  
Olga P. García ◽  
María del Carmen Caamaño ◽  
Tania Aguilar ◽  
...  

It has been recognised recently that obese individuals have lower concentrations of micronutrients and this may affect the concentrations of inflammatory cytokines. A cross-sectional study was carried out to evaluate the association of specific micronutrients' status with chronic inflammation caused by obesity in 280 women (36·1 (sd7·5) years) from seven rural communities in Mexico. Measurements of weight, height and waist circumference were made on all women and body composition was determined by dual-energy X-ray absorptiometry. Concentrations of the cytokines IL-1, TNF-α, IL-6, IL-10 and IL-12, lipid profile, and the micronutrients Zn and vitamins A, C and E were determined in fasting blood samples. Ordered logistic regression models were used to determine associations between categorised cytokine levels and micronutrients. It was found that 80 % of women were overweight or obese, and had significantly higher concentrations of C-reactive protein than normal-weight women (P= 0·05). The risk of higher levels of TNF-α, IL-6, IL-10 and IL-12 was reduced significantly among women with higher Zn concentrations (OR 0·63, 95 % CI 0·42, 0·96,P= 0·03; OR 0·57, 95 % CI 0·39, 0·86,P= 0·025; OR 0·63, 95 % CI 0·41, 0·96,P= 0·04; OR 0·62, 95 % CI 0·41, 0·95,P= 0·03, respectively). Higher concentrations of vitamin A were slightly associated with reduced risks of higher levels of IL-1 and IL-12 (OR 0·97, 95 % CI 0·95, 0·99,P= 0·03; OR 0·97, 95 % CI 0·94, 0·99,P= 0·03, respectively); when adjusting for BMI, this association was lost. No associations were found between vitamin C or vitamin E:lipids concentrations and inflammatory cytokines. In conclusion, higher Zn concentrations are associated with reduced risks of higher concentration of inflammation markers in a population of women with a high prevalence of obesity.


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