Publications by authors named "Fengyan Tang"

Purpose: Sarcopenic visceral obesity is strongly associated with metabolic dysfunction. We aimed to investigate the association between visceral fat area (VFA) to skeletal muscle mass ratio (VSR) and albuminuria in U.S.

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Purpose: The estimated glucose disposal rate (eGDR) is a simple and noninvasive clinical measure used to assess insulin resistance (IR), yet its potential utility as a marker for hyperuricemia risk had not been systematically evaluated. This study aimed to investigate the relationship between eGDR and hyperuricemia risk among American adults.

Methods: Data for this cross-sectional study were obtained from the 2007-2018 National Health and Nutrition Examination Survey (NHANES).

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Purpose: The estimated glucose disposal rate (eGDR) serves as a straightforward and noninvasive indicator of insulin resistance (IR). This study aims to explore the association between eGDR and the risk of abdominal aortic calcification (AAC).

Methods: We utilized data from adult participants (≥40 years old, n=3006) from the 2013-2014 National Health and Nutrition Examination Survey (NHANES) database.

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Objectives: Existing family and caregiving studies have primarily focused on the mental health of either older adults or adult children. Less is known about the effect of intergenerational relations on the mental health of both generations. This study examined the association between intergenerational solidarity and mental health among older Chinese Americans and their adult children using a dyadic analysis, considering the gendered nature of these relationships.

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Objectives: To examine patterns of physical frailty changes, their sociocultural correlates, and associations with initial cognitive functioning and cognitive decline over an eight-year observation period among community-dwelling older Chinese immigrants.

Design: An 8-year follow-up longitudinal study.

Setting And Participants: 2,835 community-dwelling adults aged 60 and above living in Chicago, who self-identified as Chinese, with a mean age of 72.

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Background: Patient trust in physicians is essential for effective end-of-life discussions. Little is known about how Chinese older adults' trust in physicians relates to their end-of-life care discussions and care setting preferences.

Objective: To examine the association between medical trust among Chinese older adults and their views on end-of-life discussions and care setting preferences.

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Background: Racial and ethnic disparities in sleep quality and cognitive health are increasingly recognized, yet little is understood about their associations among Chinese older adults living in the United States. This study aims to examine the relationships between sleep health and cognitive functioning in this population, utilizing data from the Population Study of Chinese Elderly in Chicago (PINE).

Methods: This observational study utilized a two-wave panel design as part of the PINE, including 2,228 participants aged 65 years or older who self-identified as Chinese.

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Article Synopsis
  • - This study explored how two types of social isolation—social disconnectedness and perceived isolation—affect depressive symptoms in older Chinese immigrants, using data from the PINE Study with 2,075 participants.
  • - It found that both forms of isolation were linked to higher initial depressive symptoms, but perceived isolation was linked to a quicker decline in these symptoms over time.
  • - The research highlighted the importance of activity engagement, which helped mediate the effects of social isolation on depression, suggesting a need for programs that reduce isolation and promote engagement among this population.
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Antioxidant-rich diets serve as protective factors in preventing obesity. The composite dietary antioxidant index (CDAI) represents a novel, comprehensive metric for assessing the antioxidant capacity of diets. Our objective is to investigate the relationship between the CDAI and obesity prevalence among adults in the United States.

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Purpose: The Composite Dietary Antioxidant Index (CDAI) is a novel, inclusive measure for evaluating the antioxidant potential of diets. We aim to explore the link between the CDAI and abdominal aortic calcification (AAC) in U.S.

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  • Elder mistreatment is a significant issue for racial and ethnic minority older adults in the U.S., especially for Chinese older adults who face unique risks related to cultural and socioeconomic factors.
  • A study involving 2,811 Chinese older adults in the Greater Chicago area found that those who reported elder mistreatment initially had better cognitive functioning but experienced a more rapid decline in cognitive performance over time.
  • The findings highlight the need to consider sociocultural contexts when addressing elder mistreatment and its impact on cognitive health in the Chinese community.
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  • - Elevated serum uric acid (SUA) levels have been linked to metabolic disorders and can be influenced by how well the kidneys function, leading researchers to study the SUA to serum creatinine (SCr) ratio and its association with type 2 diabetes in elderly individuals.
  • - In a study of non-diabetic elderly from Kunshan, China, researchers found that a higher SUA/SCr ratio was associated with an increased risk of developing type 2 diabetes over an average follow-up of nearly 4 years, particularly in women.
  • - The findings suggest that regular monitoring of the SUA/SCr ratio in this population could be useful for predicting and evaluating the risk of type 2 diabetes.
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Background And Objectives: Acculturation is a critical aspect of social experience for immigrants, including Asian immigrants. Existing literature has shown mixed findings on the health impacts of acculturation and largely relied on cross-sectional studies, preventing drawing definitive conclusions. This study aimed to examine the long-term effects of acculturation on depressive symptoms and activities of daily living (ADL) limitations in a large sample of older Chinese immigrants in the United States.

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Purpose: The atherogenic index of plasma (AIP) is a novel comprehensive lipid index. We aimed to investigate a possible relationship between AIP index and kidney stones in US adults.

Methods: This cross-sectional study was conducted among adults with complete AIP index and questionnaire records on kidney stones from the National Health and Nutrition Examination Survey (NHANES) spanning from 2007 to 2018.

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Purpose: The ratio of non-high-density lipoprotein cholesterol (non-HDL-c) to high-density lipoprotein cholesterol (HDL-c) (NHHR) is a novel comprehensive lipid index. The aim of this study was to investigate the relationship between the NHHR and the prevalence of hyperuricaemia (HUA) in the adult population of the U.S.

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Background: Previous studies have shown a strong correlation between gut microbiota and diabetes and its associated complications. We aimed to evaluate the causal relationships between the gut microbiota, gut metabolites, and diabetic neuropathy.

Methods: Summary statistics of 211 gut microbiota and 12 gut-related metabolites (β-hydroxybutyric acid, betaine, trimethylamine-N-oxide, carnitine, choline, glutamate, kynurenine, phenylalanine, propionic acid, serotonin, tryptophan, and tyrosine) were obtained from previous genome-wide association studies (GWAS).

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Article Synopsis
  • - The study investigates the long-term effects of social isolation on loneliness and depression in older adults, using data from a large sample of U.S. adults aged 60 and over.
  • - It finds that social isolation leads to higher initial levels of loneliness and depressive symptoms but affects the rate of loneliness increase differently than depressive symptoms, with resilience helping to mitigate some negative effects.
  • - The results highlight the need for strategies that enhance resilience to combat social isolation and improve mental health among older adults.
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  • * A total of 18,764 articles were examined, with the United States, China, and Spain being the top contributors, while the journal 'Nutrients' had the most publications on this topic.
  • * Ongoing debates exist about omega-3 benefits for various diseases, and future research may focus on their effects on gut microbiota, with bibliometric analysis providing insights into the field's progression and impactful topics.
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  • The study investigates the link between sleep quality and cognitive health among Chinese older adults in the U.S., focusing on the Population Study of Chinese Elderly in Chicago (PINE).
  • It involved 2,228 participants aged 65 and older, who underwent cognitive assessments and sleep quality evaluations through interviews at two points in time.
  • Results indicated that poor sleep quality negatively affected cognitive functioning, particularly in perceptual speed and episodic memory, suggesting that sleep issues may signal early cognitive decline, calling for targeted interventions.
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Background: The thyroid gland exhibits a subtle interconnection with the lungs. We further investigated the correlation between thyroid hormone sensitivity and lung function in euthyroid individuals.

Methods: Data on spirometry and mortality for participants aged 19-79 years were extracted from the NHANES database.

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  • Social disconnectedness and loneliness significantly challenge older Chinese immigrants, and this study investigates their link to cognitive decline, considering neighborhood factors.
  • The research analyzed data from over 2,000 elderly participants, assessing their cognitive function, social relationships, and neighborhood characteristics to explore the relationship between loneliness and cognitive performance.
  • Findings indicate that while loneliness relates to better initial cognitive functioning, it also leads to faster decline, with neighborhood socioeconomic status mitigating or amplifying these effects.
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Purpose: The relationship between thyroid hormone sensitivity and albuminuria remains unclear. We aimed to investigate the association between thyroid hormone sensitivity and the risk of albuminuria in a euthyroid population.

Methods: This cross-sectional study included 7634 euthyroid adults collected from the National Health and Nutrition Examination Survey (NHANES) between 2007 and 2012.

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Background: Cellular senescence is thought to play a significant role in the onset and development of diabetic nephropathy. The goal of this study was to explore potential biomarkers associated with diabetic glomerulopathy from the perspective of senescence.

Methods: Datasets about human glomerular biopsy samples related to diabetic nephropathy were systematically obtained from the Gene Expression Omnibus database.

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Objective: The potential mechanism underlying the protective effect of Astragaloside IV (AS-IV) co-treatment with 1, 25-dihydroxy-vitamin D (Vit-D) on neuropathy in diabetic high-fat rats was investigated.

Methods: The rat diabetic hyperlipidemia (DH) model was established via streptozotocin and a high-fat diet (HFD). After co-treatment (of AS-IV and Vit-D at respective doses of 50 mg/kg via oral gavage and 30000 IU/kg via intramuscular injection), blood glucose levels, markers of inflammation and oxidative stress, as well as apoptosis and histopathology were evaluated with appropriate techniques.

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Background: Previous studies have shown that the gut microbiota plays an important role in the maintenance of thyroid homeostasis. We aimed to evaluate the causal relationships between gut microbiota and hypothyroidism.

Methods: Summary statistics for 211 gut microbiota taxa were obtained from the largest available genome-wide association study (GWAS) meta-analysis conducted by the MiBioGen consortium.

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