Publications by authors named "Yong-Fang Hu"

The narrow therapeutic window of tacrolimus necessitates daily monitoring and predictive algorithms based on genetic and nongenetic factors. In this study, we constructed predictive algorithms for tacrolimus stable dose in a retrospective cohort of 1045 Chinese renal transplant recipients. All patients were genotyped for CYP3A4 20230T>C (rs2242480), CYP3A4 T>C (rs4646437), CYP3A5*3 6898A>G (rs776746), ABCB1 129T>C (rs3213619); ABCB1 c.

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Introduction: Several reports demonstrated that cadmium (Cd) had proinflammatory activities. The present study aimed to investigate whether Cd induces inflammatory cytokines in mouse placenta and human trophoblast cells.

Methods: Human JEG-3 cells were treated with different concentration of CdCl (0-50 μM) or CdCl (25 μM) for different times.

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Article Synopsis
  • The study examined how well various machine learning techniques and multiple linear regression (MLR) predict the stable dose of tacrolimus in renal transplant patients, focusing on pharmacogenetic algorithms.
  • A total of 1,045 patients from a large Chinese cohort were divided into two groups: 80% for developing the dose-prediction algorithm and 20% for testing it.
  • The regression tree (RT) model outperformed others, including MLR, in both developing and validating the prediction algorithm, marking the first application of machine learning in tacrolimus dosage prediction to enhance personalized medicine.
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The highly variable pharmacokinetics and narrow therapeutic window of tacrolimus (TAC) has hampered its clinical use. Genetic polymorphisms may contribute to the variable response, but the evidence is not compelling, and the explanation is unclear. In this study we attempted to find previously unknown genetic factors that may influence the TAC dose requirements.

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Cadmium (Cd) was a developmental toxicant that induces fetal malformation and growth restriction in mice. However, epidemiological studies about the association of maternal serum Cd level with risk of preterm birth were limited. This study was to investigate whether maternal serum Cd level during pregnancy is associated with risk of preterm birth in a Chinese population.

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Article Synopsis
  • * In a study using a mouse model, fetal weight and length decreased due to cadmium treatment, while metallothionein genes (Mt1 and Mt2) were increased in the mother's liver.
  • * The findings indicate that cadmium reduces the transport of zinc from the placenta to the fetus, leading to lower zinc levels in embryos, which may contribute to restricted growth.
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The association between maternal cadmium (Cd) exposure during pregnancy and the increased risk of fetal growth restriction (FGR) remains controversial. The present study evaluated the association between maternal serum Cd level and risk of small for gestational age (SGA) infants in a Chinese population. The present study analyzed a subsample of the C-ABCS cohort that recruited 3254 eligible mother-and-singleton-offspring pairs.

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Background: Evidence exists that maternal zinc status during pregnancy is linked to adverse pregnancy outcomes including abortion, fetal growth restriction, and neural tube defects. However, it remains unclear whether maternal serum zinc concentration (SZC) during pregnancy is associated with risk of preterm birth.

Objective: This study was designed to investigate the association between maternal SZC during pregnancy and risk of preterm birth.

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We investigated the association between maternal zinc level during pregnancy and the risks of low birth weight (LBW) and small for gestational age (SGA) infants in a large population-based birth cohort study. In this study, 3187 pregnant women were recruited. For serum zinc level, 2940 pregnant women were sufficient (≥56 μg/dL) and 247 deficient (<56 μg/dL).

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Several reports demonstrated that maternal lipopolysaccharide (LPS) exposure at middle gestational stage caused neural tube defects (NTDs). This study investigated the effects of supplementation with vitamin D3 (VitD3) during pregnancy on LPS-induced NTDs. Pregnant mice except controls were ip injected with LPS (25 μg/kg) daily from gestational day (GD)8 to GD12.

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Lipopolysaccharide (LPS) is associated with adverse developmental outcomes including embryonic resorption, fetal death, congenital teratogenesis and fetal growth retardation. Here, we explored the effects of maternal LPS exposure during pregnancy on testicular development, steroidogenesis and spermatogenesis in male offspring. The pregnant mice were intraperitoneally injected with LPS (50 µg/kg) daily from gestational day (GD) 13 to GD 17.

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Increasing evidence demonstrates that cadmium (Cd) induces inflammation, but its mechanisms remain obscure. The present study showed that treatment with CdCl₂ selectively upregulates macrophage inflammatory protein (MIP)-2 and cyclooxygenase (COX)-2 in RAW264.7 cells.

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Background: There are inconsistent conclusions about whether CYP2C19 variants could affect H. pylori eradication rate in patients treated with the proton pump inhibitor (PPI)-based therapy. We therefore performed a meta-analysis of randomized clinical trials (RCTs) to re-evaluate the impact of CYP2C19 variants on PPI-based triple therapy for the above indication.

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Objective: To demonstrate the pharmacokinetic profile of meropenem when administered by 3-hour infusion in patients undergoing continuous veno-venous hemofiltration (CVVH).

Methods: The study was conducted in 10 patients, who were treated with CVVH. Each subject received meropenem in 3-hour infusion of 500 mg every 6 hours.

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Background: CYP3A5 genetic polymorphisms contribute to marked interindividual differences in the metabolism of and response to tacrolimus in humans.

Objective: This study was aimed to clarify the impact of the CYP3A5*3 variant on tacrolimus dose requirements and acute rejection rates in patients with organ transplantation.

Methods: A literature search was performed up to August 2009 by using the Cochrane library, PubMed, Medline, and EMBase.

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Background: A common follicle-stimulating hormone (FSH) receptor (or FSHR) polymorphism Ser680Asn (rs6166) was found to be associated with altered ovarian response in women undergoing in-vitro fertilization. To further investigate such an association, a meta-analysis was conducted.

Methods: A PubMed literature search was conducted to identify all cohort studies investigating such a relationship.

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Background: Whether the loss-of-function allele CYP3A5*3 variant is associated with significantly impaired metabolism of cyclosporine A (CsA) in transplant patients is still controversial because of the lack of prospective, large-scale clinical studies performed among diversely ethnic populations.

Objectives: This meta-analysis was designed to determine whether the CYP3A5*3 variant could affect CsA blood concentrations and the rate of acute rejection in renal transplant recipients.

Methods And Results: All relevant publications were retrieved online from 1966 to March 2010, in which 14 studies were chosen, and 1821 renal transplant patients were enrolled.

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Background: Sufentanil target controlled infusion (TCI) provides stable analgesia, better hemodynamic control than a bolus injection of intravenous anesthetics, anticipated recovery and improved quality of anesthesia during perioperative period. This study evaluated the accuracy and feasibility of TCI system for sufentanil at high concentrations in Chinese surgical patients.

Methods: Twelve low risk adult patients undergoing elective surgery under general anesthesia were included in this study.

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Background: Microarray and microdissection techniques were being used for many applications to study the carcinogenesis of some human tumors. But seldom studies had hitherto combined these two techniques to study carcinogenesis mechanism of nasopharyngeal carcinoma (NPC). To identify a set of genes involved in the carcinogenesis and development of NPC, we used the microdissected homogeneous NPC tissue cells and the pure normal epithelium pillar cells to construct the whole human genome expression profiles.

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Objective: To investigate the expression of desmoglein 3 (DSG3), a candidate target gene in the antisense RNA (aRNA) from the purified nasopharyngeal tissues in nasopharyngeal carcinoma (NPC).

Methods: Specimens of nasopharyngeal tissues were harvested from 22 NPC patients, aged 44 +/- 11 (NPC group), and 12 normal persons or patients with nasopharyngeal infectious diseases, aged 46 +/- 14. Microdissection technique was used to get homogenous tissue cells from which total RNA was isolated (control group).

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Objective: To assess the correlation of the multidrug resistance-1 (MDR1) gene single nucleotide polymorphisms (SNP) C1236T, G2677T/A and C3435T with the outcome of induction chemotherapy in patients with de novo acute myeloid leukemia (AML).

Methods: A total of 44 AML patients were enrolled in this study. Genotype of MDR1 C1236T, G2677T/A and C3435T were analyzed with PCR/PFLP assay.

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1. The calcineurin inhibitor cyclosporine is widely used to prevent allograft rejection after solid organ transplantation. It has a narrow therapeutic index and shows considerable interindividual differences in its pharmacokinetics.

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