Progress of the application clinical prediction model in polycystic ovary syndrome.

Clinical prediction models play an important role in the field of medicine. These can help predict the probability of an individual suffering from disease, complications, and treatment outcomes by applying specific methodologies. Polycystic ovary syndrome (PCOS) is a common disease with a high incidence rate, huge heterogeneity, short- and long-term complications, and complex treatments. In this systematic review study, we reviewed the progress of clinical prediction models in PCOS patients, including diagnosis and prediction models for PCOS complications and treatment outcomes. We aimed to provide ideas for medical researchers and clues for the management of PCOS. In the future, models with poor accuracy can be greatly improved by adding well-known parameters and validations, which will further expand our understanding of PCOS in terms of precision medicine. By developing a series of predictive models, we can make the definition of PCOS more accurate, which can improve the diagnosis of PCOS and reduce the likelihood of false positives and false negatives. It will also help discover complications earlier and treatment outcomes being known earlier, which can result in better outcomes for women with PCOS.

A correlation between liver fibroindex and prognosis of hepatocellular carcinoma after hepatectomy / 中华肝胆外科杂志

Objective To study the correlation between liver fibroindex and prognosis of hepatocellular carcinoma after hepatectomy.Methods The clinical data of 77 patients with hepatocellular carcinoma who underwent hepatectomy at the 5th Hospital Affiliated to Sun Yat-sen University from 2009 October to 2014 December were analyzed retrospectively.Using data from preoperative Fibroindex,these patients were divided into 2 groups,Group 1:Fibroindex ≤5.4,and Group 2:Fibroindex ＞5.4.The clinical pathological parameters and postoperative disease free survival rates in these groups were analyzed.The Cox ratio risk pattern analysis was used for factors correlating recurrence.Results The parameters in the 2 groups which included sex (35/0 vs 29/13),type of cirrhosis (23/12 vs 14/28),numbers of tumor (35/0 vs 26/16),maximal diameter of tumor (31/4 vs 23/19),vascular invasion status (32/3 vs 26/16),resection margin status (35/0 vs 36/6),hepatic vein/portal vein tumor thrombus status (35/0 vs 29/13),perioperative change of HBV DNA levels (23/12 vs 15/27)were correlated with postoperative recurrence,and they all showed significant differences (P ＜ 0.05).Disease free survival rate in Group 2 was lower than Group 1 (71.4％,33.7％,22.4％ vs 94.3％,46.2％,46.2％,P ＜ 0.05).The Cox regression analysis showed Fibroindex ＞ 5.4,AFP-L3％ ≥ 10％,and number of tumor ＞ 3 to be independent predictors of poor disease-free survival after hepatectomy for hepatocellular carcinoma (P ＜ 0.05).Conclusions Preoperative Fibroindex ＞ 5.4 was an independent adverse predictor of poor disease-free survival.It was valuable to predict postoperative recurrence in hepatocellular carcinoma patients.

Effect of nuclear factor-kappa B on parathyroid hormone receptor expression and hypocalcaemia in rats with acute necrotizing pancreatitis / 中华胰腺病杂志

Objective To investigate the effect of nuclear factor-kappa B(NF-κB) on the expression of parathyroid hormone receptor (PTH1R) and serum calcium level in rats with acute necrotizing pancreatitis (ANP) rats. Methods 24 male Sprague-Dawley rats were randomly divided into sham operation group (SO), ANP group, pyrrolidine dithiocarbamat (PDTC, an inhibitor of NF-κB) pretreated ANP group (PDTC), with 8 rats each group. ANP model was induced by injecting 5% sodium taurodeoxyebolate into biliary pancreatic duct. Serum calcium was measured and the expression of NF-κB was determined by western blot and the expression of PTH1R was examined by RT-PCR plus western blot 6 h after ANP induction. Results The NF-κB proteins of bone and kidney tissues in ANP group were 1.53±0.08 and 0.47±0.19, respectively; in PDTC group they were 0.61±0.13 and 0.36±0.06 with significant difference (P<0.05). The PTH1R mRNA expressions of bone and kidney in ANP group were 0.27±0.08 and 0.29±0.06, respectively; the PTH1R proteins expressions were 0.87±0.07 and 0.31±0.09, respectively. The corresponding values in PDTC group were 0.57±0.27 and 0.37±0.11, 1.13±0.17 and 0.68±0.15, respectively, with significant difference (P<0.05). The activity of NF-κB increased in ANP group, the expressions of PTHI R decreased significantly. Compared with ANP group, the activity of NF-κB decreased and the levels of PTH1R and serum calcium increased in PDTC group (P<0.05). Conclusions NF-κB may indirectly down-regulate the expression of PTH1R, which resulting into the hypocalcaemia of ANP. PDTC may alleviate hypocalcaemia in ANP.

Effects of methylprednisolone on neurocyte apoptosis in rats with severe acute pancrcatitis / 中华消化外科杂志

Objective To investigate the effects of methylprednisolone on neurocyte apoptosis in rats with severe acute pancreatitis(SAP).Methods Thirty-six SD rats were divided into sham operation group,SAP group and methylprednisolone group(12 rats in each group).SAP model was constructed by injecting 5%sodium taurodeoxycholate into biliary-pancreatic duct.Serum amylase,interleukin-6(IL-6),tumor necrosis factor α (TNF-α),volume of aseites and histopathological changes of pancreas were determined.The mRNA expressions of Bcl-2 and Bax in brain tissue were analyzed by RT-PCR.and neuroeyte apoptosis was detected by TUNEL method.Results The levels of serum IL-6 and TNF-α were significantly increased:the expression of Bcl-2 mRNA in brain tissue was down-regulated;the expression of Bax mRNA was up-regulated;the Bcl-2/Bax ratio Was decreased:the apoptosis of the neurocytes was increased in SAP group.Compared with SAP group,the levels of serum IL-6 and TNF-α were significantly decreased;the expression of Bcl-2 mRNA was unchanged but the expression of Bax mRNA was down-regulated in brain tissue,so the Bcl-2/Bax ratio was elevated significantly;the rate of the ueurocyte apoptosis in brain tissue were reduced in methylprednisolone group.Conclusions The apoptosis of neurocytes in brain tissue may be one of the factors causing pancreatic encephalopathy.Methylprednisoione can inhibit the release of IL-6 and TNF-α.improve the balance of Bcl-2 and Bax expression and decrease the apoptosis of neurocytes in brain tissue.