1.Research progress on the effect of cytomegalovirus infection on lipid metabolism
Journal of Clinical Pediatrics 2015;33(5):494-497
Human cytomegalovirus (HCMV) has a higher prevalence in the population, and most normal individuals after primary infection can establish latent infections. Recent reports have suggested that cytomegalovirus infection associated with lipid metabolism, and play an important role in the pathogenesis of many diseases, such as hepatitis, atherosclerosis, isolated syndrome, metabolic syndrome, etc. This article summarized the relationship between cytomegalovirus infection and lipid metabolism, as well as its role in a variety of diseases progression.
2.Effect of silodosin, an alpha1a-adrenoceptor antagonist, on benign prostatic hyperplasia in rat
Journal of Chinese Physician 2016;18(2):199-202,207
Objective To investigate the effect of silodosin,a selective alpha1 a-adrenoceptor antagonist on a rat model of testosterone-induced benign prostatic hyperplasia (BPH) and its mechanisms.Methods The rats were divided into three groups:control,testosterone-induced BPH,and silodosin +BPH groups.BPH was induced by subcutaneous injection of testosterone [20 mg/(kg · d)] for 4 weeks.Meanwhile silodosin + BPH groups rats were administered silodosin 4 weeks [100 μg/(kg · d)].After 4 weeks,all animals were sacrificed to examine the blood biochemical profiles,prostate volume,weight,histopathological changes,and epidermal growth factor receptor (EGFR) and B-cell chronic lymphocytic leukemia (CLL)/lymphoma 2 (BCL-2) protein expressions.Results Each group showed an increase compared to their initial body weight;however,differences in weight change between groups were not significant (P > 0.05).The BPH group displayed lower glucose levels than the control group.The serum levels of glutamic oxaloacetic transaminase (GOT) and glutamic pyruvic transaminase (GPT) were not significantly different among groups (P > 0.05).The group treated with silodosin showed significantly lesser prostate size and weight than the testosterone-induced BPH group [volume:(0.93 ± 0.14) cm3 vs (1.75 ± 0.15)cm3,P <0.01;weight:(0.97 ±0.06)g vs (1.30±0.05)g,P <0.01].In addition,silodosin decreased the expressions of EGFR and BCL-2 in prostate tissues (P < 0.05).Conclusions These results suggest that silodosin suppress the development of BPH by inhibiting the expressions of EGFR and BCL-2.
3.Histone deacetylases regulate angiogenesis: a possible treatment strategy of improving stroke
Juan LIU ; Yang WANG ; Zhifeng DENG
International Journal of Cerebrovascular Diseases 2012;20(8):627-630
Currently,the most effective treatment for acute ischemic stroke is administration of tissuetype plasminogen activator for intravenous or intra-arterial thrombolysis within 3 to 6 hours after symptoms onset.However,the narrow therapeutic time window and the risk of intracranial hemorrhage have limited its clinical application.Angiogcncsis refers to the process of the formation of new functional blood vessels with the manner of germination from the already existing network of blood vessels.An increasing number of studies have shown that histone deacetylases involve in the regulation of angiogenesis.It may become a potential stroke treatment strategy.This article reviews the role of histone deacetylases in the regulation of angiogenesis.
4.Measurement of specific IgG avidity for verification of recent primary cytomegalovirus infection
Ge LI ; Jie XIONG ; Zhifeng LIU
Chinese Journal of Practical Pediatrics 2001;(3):162-164
Objective To distinguish primary CMV infection from reactivation or reinfection. Methods A urea denaturation test was included in the washstep of the standard IgG ELISA in 12 patients of age<12 whose serum CMV-IgG were positive, avidity indexes of CMV-IgG were measured. Results Among children aged 1~12 years, the varieties of avidity indexes of CMV-IgG in A group(IgM negative and IgG positive) and B group(IgM positive and IgG positive) had the same trend. There was only one case in B group whose avidity index was under 30%, the other were all above 30%, and most were above 50%. But among 40 children aged 1~12 months,the avidity indexes were under 30% in 21 cases,8 cases were 30~50% ,and 11 cases were above 50%. The antibody avidity in 1~6 months children was influenced by their mothers lgG,80% (12/15) of 7 ~12 months children had low-avidity antibodies. Conclusion CMV infection mostly occurred among 1~12 months children. Urea denaturation test was an efficient method to distinguish primary CMV infection from reactivation or reinfection.
5.Anti-tumor effect of piplartine and its mechanism
Zhifeng YAO ; Jianxin YAO ; Yongbiao LIU
Journal of International Oncology 2013;(4):259-263
Piplartine is an alkaloids/amide component of Piper species,having diverse pharmacological and biological activities.Recent studies have indicated that piplartine has inhibitory effects on several kinds of tumors and is a kind of potential antitumor drugs.It can inhibit the proliferation of tumor cells,cause cell cycle arrest and induce apoptosis.More investigations suggest that targeting the reactive oxygen species(ROS) stressresponse pathway is closely related to its antitumor activity.
6.The clinical characteristics of adult abdominal type Henoch Scholein purpura
Yan LI ; Xiaoyan LIU ; Zhifeng YANG
Clinical Medicine of China 2011;27(9):943-945
ObjectiveTo summarize the clinical features of adult patients with abdominal type Henoch Scholein Purpura(HSP) to improve the early diagnosis and therapeutic outcome of HSP.Methods The clinical features of 31 adult patients with abdominal type HSP from the Hematology department of Handan First Hospital between March 2007 to June 2010 were retrospectively reviewed and compared with that of 30 adult patients with non-abdominal type HSP.Results All the 31 patients had abdominal pain.Of those patients,48.4% had periumbilical colicky pain, 38.7% had whole abdominal pain and 12.9% had lower abdominal pain.The other clinical manifestations included nausea/vomiting(19.4%),positive feces occult blood test(45.1%) .EGD and Colonoscopy of 13 patients showed mucosal congestion, red macda, erosion and ulceration mainly in the descending duodenum, distal ileum and rectosigmoid.There was no difference in age, gender, allergic history and predisposing infection between those with abdominal pain and without.The patients with abdominal pain had more cases of mixed-type HSP than those without and the difference was significant (P < 0.01) .Conclusion Patients with abdominal-type of HSP are mainly young adults.So we must be more alert to abdominal-type of HSP when facing young patients with abdominal emergency.Abdominal-pain-manifesting HSP patients are mostly mixed-type cases.Gastrointestinal endoscopy is specific and might provide valuable clues for early diagnosis.
7.Observation of antihyperlipidemic effects of the extract from mussel on experimental hyperlipidemia in rats
Zhifeng LIU ; Guisheng LI ; Ping LI ;
Chinese Journal of Marine Drugs 2000;0(06):-
In this study,we have observed the effects of extract from mussel ( Mytilus edulis Linnaeus ) on experimental hyperlipidemia in rats.The results showed that the extract from mussel could reduce the levels of total cholesterol and triglyceride in blood serum of the experimental hyperlipidemic rats.
8.13C-methacetin breath test for evaluating of children's liver disorder
Guiping KONG ; Zhifeng LIU ; Yu JIN
Chinese Journal of Applied Clinical Pediatrics 2016;31(7):507-510
Objective To explore the clinical value of 13C-methacetin breath test for the assessment of liver disorder and to analyze its predictive value to the severity of liver function injury in children.Methods Eighteen healthy children served as healthy control group,and 40 patients with different etiology and severity served as experimental group,and then the latter were divided into 2 subgroups,28 patients in Child-Pugh classification A,and 12 cases in below B(11 cases in B and 1 case in C).An oral dose of 2 mg/kg tracer 13C-methacetin was administered to each subject for the 13 C-methacetin breath test.At the same time,serum liver function markers including serum transaminase,bilirubin,albumin and prothrombin time were measured.The acquired data were analyzed by SPSS 17.0 software.Results (1) Metabolisation velocity (MV) max30 and cumulated dose (CUM) 120 in experimental group (46.64 ± 27.93,59.29 ± 30.73) were much lower than those of the healthy control group(73.56 ± 26.03,102.97 ± 41.80) (t =2.450,3.165,all P <0.05);(2) MVmax30 and CUM120 were closely correlated with the liver function markers of albumin,total bilirubin,direct bilirubin,prothrombin time (P < 0.05);(3) MVmax30 and CUM120 could predict liver diseases in children,especially the CUM120.With CUM120 =85.80 as a cut-off value to predict liver diseases,the Youden index was 0.578 at its maximum,and the sensitivity and specificity were 77.8% and 80.0%;(4) Compared with the Child-Pugh classification A,the CUM120 in Child-Pugh classification B and lower B was significantly lower(P < 0.001);(5) CUM120 could predict the severity of liver diseases.With CUM120 =56.15 as a cut off value to predict the severity of liver diseases,the Youden index was 0.857 at its maximum,and the sensitivity and specificity were 85.7% and 100.0%.Conclusion 13C-methacetin breath test index of CUM120 could predict liver diseases in children and the severity of liver function.
9.Signaling pathway inhibitors of calcineurin-nuclear factor of activated T cells:research progress
Pengfei WU ; Junlin LIU ; Zhifeng CUI
Chinese Journal of Pharmacology and Toxicology 2016;30(4):397-404
Calcineurin (CaN) serves as a key enzyme in human immune regulation. The most important target of this enzyme is the transcription factors of nuclear factors of activated T cells (NFATc). The discovery of the immunosuppressive function of CaN inhibitors (CNIs),ciclosporin A (CsA) and tacrolimus (FK506),has helped overcome the immune rejection of organ transplantion and changed organ transplantion fundamentally. Both of these drugs are still widely used in clinical and basic research,but their therapeutic effects are limited by their serious side effects,including renal tox?icity and neurotoxicity. Therefore,the development of new CNIs with higher specificity and fewer side effects in the clinic is a focus of research. In this paper,the newly discovered and synthesized CNIs in recent decades,including the CsA and FK506 derivatives,direct inhibitors of CaN,as well as the inhibitors that specifically interfere with CaN-NFATc interaction,were summarized.
10.A comparison of three procedures for renal cysts: Report of 106 cases
Zhifeng LIU ; Zhishun XU ; Benkang SHI
Chinese Journal of Minimally Invasive Surgery 2005;0(08):-
Objective To evaluate advantages and disadvantages of three procedures-percutaneous ethanol injection,small incision unroofing,and laparoscopic unroofing-in the treatment of renal cysts.Methods Clinical data of 106 cases of renal cysts from January 2001 to November 2004,treated either by percutaneous ethanol injection(Percutaneous Group),or small incision unroofing(Small Incision Group),or laparoscopic unroofing (Laparoscopic Group),were reviewed.The operation time,intraoperative blood loss,hospitalization costs,and cure rate were compared among the three procedures.Results The Percutaneous Group presented the least hospitalization costs(3 261.8?779.2 yuan),the lowest cure rate(78.6%,22/28),and the highest recurrence rate(21.4%,6/28).The Small Incision Group had the shortest operation time(44.1?5.7 min),and the Laparoscopic Group had the highest hospitalization costs(9 050.9?1 116.2 yuan).There were significant differences in these parameters among the three groups(P0.05).Conclusions The three procedures,with each having its own advantages,should be selected depending on individual conditions.For patients with a simple renal cyst