PMCC PMCC

Search tips
Search criteria

Advanced
Results 1-4 (4)
 

Clipboard (0)
None
Journals
Authors
more »
Year of Publication
Document Types
1.  Functional characterization of a haplotype in the AKT1 gene associated with glucose homeostasis and metabolic syndrome 
Human genetics  2010;128(6):635-645.
A small 12-kb haplotype upstream of the AKT1 gene has been found to be associated with insulin resistance phenotypes. We sought to define the functional consequences of the three component polymorphic loci (rs1130214, rs10141867, rs33925946) on AKT1 and the upstream ZBTB42 gene. 5′ RACE analysis of AKT1 transcripts in human skeletal muscle biopsies showed the predominant promoter to be 2.5 kb upstream of exon 2, and distinct from those promoters previously reported in rat. We then studied the effect of each of the three haplotype polymorphisms in transcriptional reporter assays in muscle, bone, and fat cell culture models, and found that each modulated enhancer and repressor activity are in a cell-specific and differentiation-specific manner. Our results in promoter assays are consistent with the human phenotype data; we found an anabolic effect on muscle and bone with increased mRNA expression of AKT1, and catabolic effect on fat with decreased expression. To test the hypothesis that rs10141867 affects transcription levels of the novel zinc finger protein ZBTB42 in vivo, we developed the allele-specific expression assay using Taqman technology to test for allelic differences within heterozygotes. The allele containing the derived polymorphism (haplotype H2) showed a 1.75-fold increase in expression in human skeletal muscle. Our data show a particularly complex effect of the component polymorphisms of a single haplotype on cells and tissues, suggesting that the coordination of different tissue-specific effects may have driven selection for the H2 haplotype. In light of the recent abundance of SNP association studies, our approach can serve as a method for exploring the biological function of polymorphisms that show significant genotype/phenotype associations.
doi:10.1007/s00439-010-0891-7
PMCID: PMC4079461  PMID: 20872231
2.  (E,E)-3,3′-Dimethyl-1,1′-diphenyl-4,4′-{[3-aza­pentane-1,5-diylbis(aza­nedi­yl)]bis­(phenyl­methyl­idyne)}di-1H-pyrazol-5(4H)-one 
The asymmetric unit of the title compound, C38H37N7O2, contains one half-mol­ecule, situated on a twofold rotational axis, in which one amino group is involved in intra­molecular N—H⋯O hydrogen bond and the two phenyl rings are twisted from the plane of pyrazolone ring by 26.69 (10) and 79.64 (8)°. The crystal packing exhibits no classical inter­molecular contacts.
doi:10.1107/S1600536810048981
PMCID: PMC3011678  PMID: 21589602
3.  Aberrant expression of CD133 protein correlates with Ki-67 expression and is a prognostic marker in gastric adenocarcinoma 
BMC Cancer  2010;10:218.
Background
The relationships between the expression of CD133, Ki-67 and prognosis in gastric adenocarcinoma are unknown and needs exploring.
Methods
The samples of gastric adenocarcinoma from 336 Chinese patients with follow-up were analyzed for CD133 and Ki-67 protein expressions by immunohistochemical method.
Results
CD133 was expressed in up to 57.4% (193/336) of this group of gastric carcinoma. The expression of CD133 was significantly higher in carcinoma than in normal (P = 0.0001) and dysplastic mucosas (P = 0.004). CD133 was positive corresponded with the tumour size, grade, infiltrative depth and clinical stage (all P < 0.05). The overall mean survival time of the patients with CD133 positive expression was shorter than that of patients with negative expression (P = 0.0001). The expression of CD133 has a positive correlation with that of Ki-67 (r = 0.188, P = 0.001) in gastric adenocarcinoma. CD133 was an independent prognostic indicator. (P = 0.0001).
Conclusions
It is suggested that CD133 may play an important role in the evolution of gastric adenocarcinoma and should be considered as a potential marker for the prognosis.
doi:10.1186/1471-2407-10-218
PMCID: PMC2891633  PMID: 20487522
4.  Clinicopathological significance and prognostic value of LRP16 expression in colorectal carcinoma 
AIM: To explore the expression of leukemia related protein 16 (LRP16) in colorectal carcinoma, and analyze its correlation with clinicopathologic features and prognosis.
METHODS: Immunohistochemistry for LRP16 was performed in 201 cases of colorectal carcinoma and 60 cases of distal normal mucosa. Medical records were reviewed and clinicopathological analysis was performed.
RESULTS: LRP16 expression was detected in 117 of 201 cases of the colorectal carcinoma and in 21 cases of 60 distal normal mucosa. The expression of LRP16 in carcinoma was significantly higher than that in normal mucosa (χ2 = 9.999, P = 0.002). LRP16 protein expression was found in 43.3% (52/120) of carcinoma at stage I and II, and 80.2% (65/81) of carcinoma at stage III and IV (χ2 =27.088, P = 0.001). Correlation between LRP16 expression and clinicopathological factors was significant in differentiation (P = 0.010), tumor size (P = 0.001), infiltrative depth (P = 0.000) and distant metastasis (P = 0.027). The difference of median survival time between cancer patients with LRP16 expression (38.0 mo) and those without was statistically significant (105.0 mo, Log rank = 41.455, P = 0.001). The multivariate survival analysis revealed that LRP16 expression was correlated significantly (Cox’s regression: P = 0.001, relative risk = 2.082) with shortened survival in the patients with colorectal cancer.
CONCLUSION: The expression of LRP16 is related to the degree of differentiation, invasiveness, metastasis and prognosis of colorectal carcinoma.
doi:10.3748/wjg.v16.i13.1644
PMCID: PMC2848373  PMID: 20355243
Colorectal neoplasms; Immunohistochemistry; Leukemia related protein 16; Prognosis; Clinicopathology

Results 1-4 (4)