Publications by authors named "Qi Hui Cheng"

With abilities to renew themselves and lead to heterogeneity of tumors, cancer stem cells (CSCs) are similar to stem cells. As three leading causes of death that endanger women's health, breast cancer, ovarian cancer and cervical cancer are characterized by high degree of malignancy, metastasis and recurrence. Associated with women's fertility, these three malignancies are common and representative among females.

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MicroRNAs are a class of small noncoding RNA which play important regulatory roles in a variety of cancers. MiRNA-specific expression profiles have been reported for several pathological conditions. In this study, we combined large scale parallel Solexa sequencing to identify 11 up-regulated miRNAs and 19 down-regulated miRNAs with computational techniques in the sera of ovarian cancer patients while using healthy serum as the control.

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Background: Severe acute pancreatitis (SAP) is characterized by fatal pathogenic conditions and a high mortality. It is important to study SAP complicated with multiple organ injury. In this study we compared the protective effects of three traditional Chinese medicines (Ligustrazine, Kakonein and Panax Notoginsenoside) on the small intestine and immune organs (thymus, spleen and lymph nodes) of rats with SAP and explored their mechanism of action.

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Background: Intestinal mucosa injury in cases of severe acute pancreatitis (SAP) or obstructive jaundice (OJ) is one of the main reasons for the accelerated aggravation of these diseases. Besides being an organ to digest and absorb nutrients, the intestine is also a unique immune organ. When SAP and OJ develop, the destruction of the intestinal mucosa barrier is an important contributing factor for the development of bacterial translocation, systemic inflammatory response syndrome, and multiple organ dysfunction syndrome.

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Aim: To observe the protective effect of Radix Astragali injection on immune organs (lymph nodes, spleen and thymus) of rats with obstructive jaundice (OJ) and its mechanism.

Methods: SD rats were randomly divided into sham-operation group, model control group and Radix Astragali treatment group. On days 7, 14, 21 and 28 after operation, mortality rate of rats, pathological changes in immune organs, expression levels of Bax and nuclear factor (NF)-kappaB p65 proteins, apoptosis indexes and serum tumor necrosis factor (TNF)-alpha level in spleen and thymus were observed, respectively.

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Aim: To investigate the influence of high dose of dexamethasone on inflammatory mediators and apoptosis of rats with severe acute pancreatitis (SAP).

Methods: SAP rats were randomly assigned to the model group and treatment group while the normal rats were assigned to the sham operation group. The mortality, ascite volumes, ascites/body weight ratio and pancreas pathological changes of all rats were observed at 3, 6 and 12 h after operation.

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Background: The good therapeutic effects of large dose of dexamethasone on severe acute pancreatitis (SAP) patients have been proved. This study was designed to investigate the influence of dexamethasone on apoptosis of acinar cells in the pancreas of rats with SAP and the protein expression of the apoptosis-regulating genes Bax and Bcl-2.

Methods: Ninety Sprague-Dawley rats with SAP were randomly divided into a model group and a dexamethasone treated group (45 rats in each group), and another 45 rats formed the sham operation group.

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Aim: To investigate the protective effects and mechanisms of Baicalin and octreotide on renal injury of rats with severe acute pancreatitis (SAP).

Methods: One hundred and eighty SD rats were randomly assigned to the model group, Baicalin-treated group, octreotide-treated group and sham operation group. The mortality, plasma endotoxin level, contents of blood urea nitrogen (BUN), creatinine (CREA), phospholipase A2 (PLA2), nitrogen monoxide (NO), tumor necrosis factor (TNF)-alpha, IL-6 and endothelin-1 (ET-1) in serum, expression levels of renal Bax and Bcl-2 protein, apoptotic indexes and pathological changes of kidney were observed at 3, 6 and 12 h after operation.

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Aim: To establish an ideal model of multiple organ injury of rats with severe acute pancreatitis (SAP).

Methods: SAP models were induced by retrograde injection of 0.1 mL/100 g 3.

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Context: Pancreas, lung, kidney and liver injury has been proven to play an important role in severe acute pancreatitis.

Objective: To observe the protective effects of dexamethasone on multiple organs (pancreas, lung, kidney and liver) in rats with severe acute pancreatitis.

Animals: One hundred and thirty-five Sprague-Dawley rats.

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To discuss the influence of dexamethasone on NF-kappaB expression of pancreas in rat with severe acute pancreatitis (SAP). Ninety rat SAP models were divided into the model group and dexamethasone treatment group with 45 rats in each group; another healthy 45 rats were selected to be the sham operation group. The groups were divided into the 3, 6 and 12 h group with 15 rats in each group.

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Purpose: To discuss the application value of Baicalin which is a new drug by comparing the protecting effects of Baicalin and Octreotide on multiple organs (pancreas, liver, kidney, and lung) in Severe acute pancreatitis (SAP).

Methods: The improved Aho method was adopted to prepare SAP rat models via retrograde injection of 3.5% sodium taurocholate to the pancreatic duct.

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Aim: To observe the therapeutic effects of dexamethasone on rats with severe acute pancreatitis (SAP) and investigate the influences of dexamethasone on the inflammatory mediators and NF-kappaB expression in multiple organs of SAP rats as well as the mechanisms involved.

Methods: Ninety Sprague-Dawley (SD) rats with SAP were randomly divided into the model group (n = 45) and dexamethasone treatment group (n = 45), and another 45 rats were selected for the sham operation group. All groups were randomly subdivided into the 3 h, 6 h and 12 h groups, each group containing 15 rats.

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