Publications by authors named "Hsien-Yu Fan"

Background: Maternal diet during pregnancy plays a critical role in shaping infant immune development, potentially influencing the risk of atopic dermatitis. However, the underlying mechanisms remain unclear. This study examined the association between maternal dietary diversity during pregnancy and the incidence of atopic dermatitis in early childhood and explored the potential mediating role of the infant gut microbiome.

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  • A study explored whole-exome sequencing (WES) to better understand severe hypertriglyceridemia by identifying genes linked to high triglyceride levels through a genome-wide association study (GWAS).
  • The GWAS involved over 120,000 participants and found that the APOA5 locus on chromosome 11 has the strongest association with triglyceride levels, alongside other significant genes like BUD13, GCKR, and LPL.
  • WES conducted on 29 patients with extreme hypertriglyceridemia identified additional genes such as ALDH1A2 and APOC1, highlighting both known and novel genetic factors that may influence lipid metabolism and open up possibilities for new treatments.
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Objective: The association of sorbitol intake with maintaining healthy body weight through the gut microbiome during early life was investigated.

Research Methods And Procedures: Sorbitol intake, body mass index (BMI), and fecal samples were collected in the total of 369 pregnant women with their infants (aged 4 months to 5 years) from the Taipei Mother-Infant Nutrition Cohort and 1946 children and adolescents (aged 6-18 years) from the Taiwan Puberty Longitudinal Study. The BMI-z score in sorbitol users was compared to that in sorbitol nonusers using generalized linear mixed model.

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  • The study investigates the link between serum 25-hydroxyvitamin D (25(OH)D) levels and stroke risk, observing that higher concentrations of this vitamin are associated with a lower likelihood of having a stroke.
  • Conducted from 1990 to 2011 with 1,778 participants, the research utilized observational and Mendelian randomization methods to analyze the data and found a significant correlation between increased 25(OH)D levels and decreased stroke risk, with a particular emphasis on hypertension as a mediating factor.
  • The findings suggest that maintaining adequate 25(OH)D levels may reduce stroke risk, and that managing blood pressure could be key in preventing strokes among those low in this vitamin.
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Background: Pubertal timing is modulated by complex interactions between the pituitary and gonadal sex steroid hormones. Evidence indicates that sphingolipids are involved in the biosynthesis of steroid hormones at multiple levels.

Method: This study recruited adolescent female patients from pubertal and pediatric endocrine clinics in Northern and Southern Taiwan from the Taiwan Puberty Longitudinal Study.

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  • Taller adults tend to have a lower risk of stroke compared to shorter individuals, with the study showing significant differences in risk based on height categories.
  • Systolic blood pressure plays a crucial role in this relationship, acting as a protective factor that helps mediate the association between height and stroke risk.
  • The findings suggest that managing systolic blood pressure could be an effective strategy for preventing strokes, particularly for those at risk.
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  • This study investigates the link between central precocious puberty (CPP) and early hypertension in children, focusing on both boys and girls.
  • It specifically finds that boys experiencing CPP have a significantly higher risk of early hypertension compared to those with normal puberty onset, with notable differences in systolic blood pressure before and after puberty.
  • Ultimately, the research suggests that addressing CPP in boys could help manage elevated blood pressure levels and reduce early hypertension risks.
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  • Omega-3 supplementation can influence immune responses and may help prevent food allergies in children, but previous studies have shown mixed results, particularly regarding the best time to start supplementation.
  • This study aimed to determine whether omega-3 supplements taken by mothers during pregnancy and lactation or by children later on are more effective in reducing food allergy risks, analyzing data from various medical databases.
  • Results indicated that maternal omega-3 intake significantly lowers the chances of infants developing allergies, specifically to eggs and peanuts, while childhood omega-3 supplementation alone shows no significant protective effect.
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Context: Extremely early age at menarche, also called precocious puberty, has been associated with various cardiometabolic traits, but their shared heritability remains unclear.

Objectives: This work aimed to identify new shared genetic variants and their pathways for age at menarche and cardiometabolic traits and to investigate the influence of central precocious puberty on childhood cardiometabolic traits.

Methods: Using the conjunction false discovery rate method, this study analyzed genome-wide association study data from the menarche-cardiometabolic traits among 59 655 females of Taiwanese ancestry and systemically investigated pleiotropy between age at menarche and cardiometabolic traits.

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Left ventricular mass is a highly heritable disease. Previous studies have suggested common genetic variants to be associated with left ventricular mass; however, the roles of rare variants are still unknown. We performed targeted next-generation sequencing using the TruSight Cardio panel, which provides comprehensive coverage of 175 genes with known associations to 17 inherited cardiac conditions.

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Background: Menarche timing may not be directly associated with the risk of coronary artery disease (CAD). Therefore, we investigated the roles of metabolic factors in explaining the effect of age at menarche on CAD risk.

Methods: We identified women with age at menarche and CAD by using three analytical methods: Mendelian randomization (MR), logistic regression analysis, and Cox proportional hazard regression.

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  • * This study followed pregnant women and analyzed their 3-day dietary records, finding that infants' gut microbiomes varied significantly based on whether their mothers consumed high or low amounts of fruits and vegetables.
  • * The research identified specific bacterial taxa that are associated with maternal nutrient intake, suggesting that enhancing fruit and vegetable consumption during pregnancy could positively impact infants' gut health early in life.
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Purpose: Studies have reported the influence of adolescent obesity on development of adult diabetes, but the effect of the growth pattern during this period has rarely been explored. Also, the tri-ponderal mass index (TMI) was thought to be a better estimation of adolescent body fat levels than the body mass index (BMI), so we sought to investigate whether growth trajectories derived by these two indices could predict incident diabetes.

Methods: We conducted a study by using the Taipei City Hospital Radiation Building Database, a longitudinal cohort established in 1996.

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Among the genetic and environmental risk factors, nutrition plays a crucial role in determining the timing of puberty. Early menarche onset (EMO) is defined as when girls reach menarche onset at an age which is earlier than the mean/median age of menarche, between 12 and 13 years of age, according to individual ethnicity. The present study examined the association between nutrient intake in childhood and EMO risk in healthy girls by performing a systematic review and meta-analysis of prospective studies.

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Aim: To investigate the relationship between the implementation of real-time audiovisual cardiopulmonary resuscitation (CPR) feedback devices with cardiac arrest patient outcomes, such as return of spontaneous circulation (ROSC), short-term survival, and neurological outcome.

Methods: We systematically searched PubMed, Embase, and the Cochrane CENTRAL from inception date until April 30, 2020, for eligible randomized and nonrandomized studies. Pooled odds ratio (OR) for each binary outcome was calculated using R system.

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Background: Depressive symptoms and food insecurity are two of the public health concerns in developing countries. Food insecurity is linked to several chronic diseases, while little is known about the association between food insecurity and depressive symptoms among adults. A person with limited or uncertain availability or access to nutritionally sufficient, socially relevant, and safe foods is defined as a food-insecure person.

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Background: Childhood body mass index (BMI) trajectory classes are rarely linked to early puberty risk, particularly among Chinese children. We estimated early puberty risk across BMI trajectory classes, investigated factors contributing to pubertal development, and examined differences in final adult height between children exhibiting early and nonearly pubertal maturation across the classes.

Methods: The Taiwan Children Health Study recruited 10-year-old children in 2010 from 14 Taiwanese communities and resurveyed them at age 11, 12, and 18 years.

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Aims: Obesity and early puberty have been reported to be mutually causative. We investigated the causal relationship between adiposity and early puberty by performing bidirectional Mendelian randomization (MR) and longitudinal data analyses.

Methods: We used information from the Taiwan Children Health Study (3109 adolescents aged 11-12 years) with 17 body mass index (BMI)- and 10 puberty-related single-nucleotide polymorphisms (SNPs) to produce genetic instrumental variables (IVs).

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Background: Studies on early puberty and incident asthma have reported inconsistent results and are mainly performed in females. In this longitudinal study, we investigated the causal relationship between pubertal maturation and asthma through Mendelian randomization (MR) and explored the joint effect of overweightness and early pubertal maturation on asthma.

Methods: We used data from the Taiwan Children Health Study with longitudinal follow-ups of 2991 children aged 11-17 years.

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The effect of hospice care on place of death among centenarians remained unexplored. Using data obtained from National Health Insurance Research Database (2002-2010), we compared the differences in place and cause of death between centenarians and noncentenarians. These data were stratified into centenarian (n = 2495) and noncentenarian (n = 820 563) death.

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Objective: To explore the causal effect of time-varying z-BMI growth on early menarche using Mendelian randomisation (MR); to identify critical adiposity predictors of early menarche; to compare the effects of birthweight and time-varying z-BMI growth as mediators of the path from genes to early menarche using mediation analysis.

Methods: We used data from the Taiwan Children Health Study with 21 obesity-related single-nucleotide polymorphisms (SNPs) to yield genetic (instrumental variable)IVs for adiposity. Children with available data on genotyping, birthweight, adiposity, and menarcheal age were included.

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Background/objectives: Obesity and asthma are common chronic diseases and have been reported to be mutually causative. We investigated the causal direction of the relationship between adiposity and asthma using genetic markers as instrumental variables (IVs) in bi-directional Mendelian randomization (MR) analysis.

Subjects/methods: We used data from the Taiwan Children Health Study with 24 body mass index (BMI)-single-nucleotide polymorphisms (SNPs, combined into a weighted allelic score) and 16 asthma-SNPs (combined into two weighted allelic scores, separately for asthma inflammatory and antioxidative genes) to yield genetic IVs for adiposity and asthma, respectively.

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