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Articles by J. J Hu
Total Records ( 2 ) for J. J Hu
  J Zabaleta , L. J Su , H. Y Lin , R. A Sierra , M. C Hall , A. O Sartor , P. E Clark , J. J Hu and A. C. Ochoa
 

Prostate cancer (PCa) is one of the most common cancers in the world. Inflammation has been described as a risk factor for PCa and depends on the production of cytokines in response to tissue damage or the presence of stimuli that induces cellular stress. Interindividual variation in cytokine production is partially controlled by single-nucleotide polymorphisms (SNPs) that have been associated with differential production of cytokines. We have recently showed that SNP–SNP interactions of cytokine genes are associated with PCa risk. However, little is known about the association of cytokine SNPs and PCa aggressiveness. In this study, we evaluated the association of 15 SNPs in five cytokine genes and aggressiveness of PCa in African- and Caucasian-American individuals. Caucasian Americans with the genotypes IL10–1082GG or IL1B+3954TT had 2.31-fold [95% confidence interval (CI) = 1.13–4.72] and 3.11 (95% CI = 1.20–8.06)-fold risk, respectively, of developing aggressive PCa, as compared with individuals without those genotypes. We did not find any associations in the African-American group. Using Multivariate Adaptive Regression Splines modeling for exploratory SNP–SNP interactions, our results showed that more aggressive PCa in Caucasians Americans is associated with the CT genotype at IL8–47 [odds ratios (OR) = 3.50; 95% CI = 1.13–10.88] or combined genotypes of IL1B–511CC and IL10–1082GG (OR = 3.38; 95% CI = 1.70–6.71). Unfortunately, the same analysis could not be performed in the African-Americans due to limited number of individuals. With limited sample size, the results from this study suggest that SNPs in cytokine genes may be associated with PCa aggressiveness. More extensive studies are warranted to validate our findings.

  S. B Fang , H. C Lee , J. J Hu , S. Y Hou , H. L Liu and H. W. Fang
 

Beneficial effects of probiotics in acute infectious diarrhoea in children are mainly seen in watery diarrhoea and viral gastroenteritis. Lactobacillus rhamnosus, one the most extensively studied probiotic strains, is effective in shortening courses of acute diarrhoea in children. However, the dose-dependent effect of Lactobacillus upon quantification of faecal rotavirus shedding in humans remains little known. Thus, an open-label randomized trial in 23 children with acute rotaviral gastroenteritis was undertaken by randomly allocating patients to receive one of the three regimens for 3 days: daily Lactobacillus rhamnosus 35 (Lcr35) with 0 CFU/day to six patients in the control group, 2 x 108 CFU/day to nine patients in the low-dose group, and 6 x 108 CFU/day to eight patients in the high-dose group. Faecal samples were collected before and after the 3-day regimen for measurements of rotavirus concentrations by ELISA. There was no statistically significant change in faecal rotavirus concentrations in either the control group (119.2 x 105 particles/ml vs. 23.7 x 105 particles/ml, p = 0.075) or the low-dose group (36.1 x 105 particles/ml vs. 73.5 x 105 particles/ml, p = 0.859). However, the high-dose group had a significant reduction of faecal rotavirus concentration (64.2 x 105 particles/ml vs. 9.0 x 105 particles/ml, p = 0.012). Without any exception, the faecal rotavirus concentrations of all eight patients in the high-dose Lcr35 group declined by 86% after 3 days when compared with those before Lcr35 administration. In conclusion, this is the first report to provide quantitative evidence of the dose-dependent effect of Lactobacillus rhamnosus, a minimal effective dose of 6 x 108 CFU for 3 days, upon the faecal rotavirus shedding in paediatric patients.

 
 
 
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