Metabolic Pathways Associated With Obesity and Hypertension in Black Caregivers of Persons Living With Dementia

Background In the United States, Black adults have the highest prevalence of obesity and hypertension, increasing their risk of morbidity and mortality. Caregivers of persons with dementia are also at increased risk of morbidity and mortality due to the demands of providing care. Thus, Black caregivers—who are the second largest group of caregivers of persons with dementia in the United States—have the highest risks for poor health outcomes among all caregivers. However, the physiological changes associated with multiple chronic conditions in Black caregivers are poorly understood. Objectives In this study, metabolomics were compared to the metabolic profiles of Black caregivers with obesity, with or without hypertension. Our goal was to identify metabolites and metabolic pathways that could be targeted to reduce obesity and hypertension rates in this group. Methods High-resolution, untargeted metabolomic assays were performed on plasma samples from 26 self-identified Black caregivers with obesity, 18 of whom had hypertension. Logistic regression and pathway analyses were employed to identify metabolites and metabolic pathways differentiating caregivers with obesity only and caregivers with both obesity and hypertension. Results Key metabolic pathways discriminating caregivers with obesity only and caregivers with obesity and hypertension were butanoate and glutamate metabolism, fatty acid activation/biosynthesis, and the carnitine shuttle pathway. Metabolites related to glutamate metabolism in the butanoate metabolism pathway were more abundant in caregivers with hypertension, while metabolites identified as butyric acid/butanoate and R-(3)-hydroxybutanoate were less abundant. Caregivers with hypertension also had lower levels of several unsaturated fatty acids. Discussion In Black caregivers with obesity, multiple metabolic features and pathways differentiated among caregivers with and without hypertension. If confirmed in future studies, these findings would support ongoing clinical monitoring and culturally tailored interventions focused on nutrition (particularly polyunsaturated fats and animal protein), exercise, and stress management to reduce the risk of hypertension in Black caregivers with obesity.

Health Social Networks of Black Women With Hypertension

Background The prevalence of hypertension is 55% among African American/Black women, who have a higher risk for poor health outcomes compared to women from other racial and ethnic groups, in part because of uncontrolled blood pressure. Previous research results suggest that peers may positively influence self-management of chronic conditions like hypertension. However, few studies have described the personal characteristics of peers in the health social networks of Black women. Objective This substudy aimed to examine health social networks and describe the peers’ characteristics, as reported by a convenience sample of Black women with hypertension. Methods In this analysis of data from a larger study, 94 Black women with hypertension attending a church conference participated in a cross-sectional, descriptive study. Their mean age was 59 years, and their mean systolic blood pressure was 143 mm Hg. All participants completed a survey to gather data about (a) the characteristics of individuals they discussed health matters with (their peers or health social network) and (b) their perceptions about hypertension status and knowledge of hypertension among the peers in their health social network. Results Collectively, participants from the larger study named a total of 658 peers who were part of their health social networks; the mean health social network size was six peers. The peers were mostly women, Black, family members, and, on average, 54 years old. The participants discussed hypertension with 71% of the peers, reported that 36% had hypertension, and felt that 67% were somewhat or very knowledgeable about the condition. A small, positive correlation existed between the participants’ health social network size (number of peers named) and their systolic blood pressure levels. Discussion The health social network peers were similar to those in the larger study, with most of the same gender, race, and age. The findings of this analysis may be used to help practitioners and scientists guide patients in building health social networks for support in self-managing hypertension and conducting future studies to examine the best strategies for developing and using health social networks to improve health outcomes and reduce health disparities.