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Objective To investigate the expression level of calcitonin gene-related peptide-receptor component protein (CRCP) in hepatocellular carcinoma (HCC) tissue and adjacent tissue and its association with the clinicopathological features and prognosis of patients. Methods HCC and adjacent tissue samples were collected from 79 HCC patients who underwent surgical resection in Eastern Hepatobiliary Surgery Hospital, Navy Medical University, from June 2003 to September 2009. Tissue microarray was prepared, and immunohistochemistry was used for quantitative analysis. Related proteins were extracted and measured by Western blot, and the expression of CRCP was compared between HCC tissue and adjacent tissue. The chi-square test was used for comparison of categorical data between groups. The receiver operating characteristic (ROC) curve analysis was performed to obtain the area under the ROC curve (AUC), and goodness of fit was evaluated. Youden index was used to determine the optimal cut-off value. and the Kaplan-Meier survival analysis was used to analyze the association of CRCP expression with the recurrence and prognosis of HCC, and the log rank test was used for comparison between the two groups. Results Among the 79 HCC patients, there were 67 male patients and 12 female patients, with an age of 10-72 years, and 20 patients had portal vein tumor thrombus. As for pathological grade, 1 had grade 4 HCC, 61 had grade 3 HCC, and 17 had grade 2 HCC; as for BCLC stage, 5 had BCLC stage 0 HCC, 55 had BCLC stage A HCC, 11 had BCLC stage B HCC, and 8 had BCLC stage C HCC. Western blot showed that the expression level of CRCP in HCC tissue was lower than that in adjacent tissue in 4 patients, and immunohistochemistry showed that the expression level of CRCP in HCC tissue was significantly lower than that in adjacent tissue in 75.9% of the patients. Low CRCP expression was associated with CK19 positivity, incomplete tumor capsule, presence of portal vein tumor thrombus, and high pathological grade ( χ 2 =6.410, 4.829, 9.319, and 9.083, all P < 0.05). Compared with the low CRCP expression group, the high CRCP expression group had a significantly longer overall survival time and a significantly lower recurrence rate ( P < 0.001 and P =0.009). Conclusion Patients with low CRCP expression in HCC tissue tend to have a poorer prognosis than those with high CRCP expression, and CRCP may participate in the development, progression, and metastasis of HCC, suggesting that this molecule can be used as a potential biomarker to predict the prognosis of HCC patients.
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ABSTRACT Purpose It has been reported that calcitonin receptor (CALCR) gene polymorphisms might be associated with calcium stone urolithiasis. Owing to mixed and inconclusive results, we conducted a meta-analysis to summarize and clarify this association. Materials and Methods A systematic search of studies on the association between CALCR gene polymorphisms and calcium stone urolithiasis susceptibility was conducted in databases. Results Odds ratios and 95% confidence intervals were used to pool the effect size. Five articles were included in our meta-analysis. Conclusions CALCR rs1801197 might be associated with increased risk of calcium stone urolithiasis. There is insufficient data to fully confirm the association between CALCR rs1042138 and calcium stone urolithiasis susceptibility. Well-designed studies with larger sample size and more subgroups are required to validate the risk identified in the current meta-analysis.
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Humans , Male , Female , Receptors, Calcitonin/genetics , Polymorphism, Single Nucleotide , Urolithiasis/genetics , Calcium/metabolism , Risk Factors , Risk Assessment , Genetic Association StudiesABSTRACT
Objective To investigate the expressions of intermedin /adrenomeduliin 2 (IMD/AM2) and its receptor calcitonin receptor-like receptor (CRLR) in the kidney of rats after renal ischemia reperfusion injury(IRI). Methods Male Wistar rats were divided randomly into two groups: sham group and operation group. Renal IRI model was induced by clamping both renal arteries. Blood and kidney were harversted at 0 h, 6 h, 12 h, 24 h, 48 h, 72 h after reperfusion, respectively. Renal histological changes were semi-quantitated. Expressions of IMD and CRLR in the kidney were detected by Western blot, and the content of IMD in serum was measured by radioimmunity at 12 h, 48 h, 72 h after repeffusion. Results Kidneys of renal IRI model rats displayed significant pathologic changes, and the changes were much severer at 48 h after reperfusion. The expressions of IMD and CRLR in kidney were significantly up-regnlated at 12 h, 48 h, 72 h after renal IRI (P<0.01). The level of IMD in serum increased at 12 h, 48 h, 72 h after renal IRI (P<0.05). Conclusion The expressions of IMD and its receptor are up-regulated in the kidney after renal IRI, which may participate in the pathophysiological changes induced by renal IRI.
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Objective:To investigate the changes of pulmonary IMD and its receptor system - calcitonin receptor-like receptor (CL) and receptor activity modifying proteins (RAMPs) mRNA in acute lung injury(ALI) induced by oleic acid of rats. Methods: Contents of IMD in plasma and lung homogenates were measured by radioimmunoassay(RIA). The lung mRNA of IMD, CL and RAMPs was determined by semi-quantitative RT-PCR. Results: Compared with control group, in ALI group, the contents of IMD_ 1-53 in plasma and lung homogenates were decreased by 20.8% and 74.5% (all P