Objective To investigate the functional and histological changes in aging gerbil bladders.MethodsTwelve male gerbils were randomly divided into control group and aging bladder group,with 6 in each group.Experiment was conducted in gerbils of control group and aging bladder group 6 months and 24 months after normal feeding,respectively.Urodynamic examinations including irrigation volume,compliance and filling pressure of bladder were performed,bladder weight was obtained,bladder weight index was calculated,morphological observation was conducted with HE staining,ratio of amount of smooth muscle to collagen was obtained with double immunohistochemical staining,and electron microscope was used to evaluate the ultrastructure of bladder.ResultsCompared with those in control group,the irrigation volume and compliance of bladder significantly decreased in aging bladder group(P0.05).However,the bladder weight index was significantly lower in aging bladder group(P0.05).There existed degeneration in smooth muscle cells and organelles in aging bladder group.ConclusionThe function of aging bladder in gerbils is impaired,which may be related to the degeneration of bladder tissues.

Objective To compare the effects of UVA irradiation on cell morphology,quantity and expression of inducible nitric oxide synthase (iNOS) mRNA and protein in human fibroblasts versus a kerati- nocyte cell line HaCaT.Methods Human fibroblasts and HaCaT cells were cultured and irradiated by 5 J/cm~2 UVA.Then,at 24,48 and 72 h after the stimulation,the cell morphology was observed under an in- verted microscope,and iNOS mRNA and protein were measured by RT-PCR and immunohistochemistry method,respectively.Results After the irradiation,human fibroblasts showed shrinkage at the three time points,the quantities of the cells began to decrease significantly at 24 h (P

Objective To explore the relationship between the endemic arsenism and the liver,renal damage.Methods Some permanent residents were selected as investigated subjects who lived at 3 villages in Datong in Shanxi Province,an arseniasis-endemic areas,These objects were divided into arsenic poisoning and control group on the basis of Diagnosis Standard for Endemic Arsenism(WS/T 211-2001).Then blood and urine samples were collected in the surveyed people.Serum glutamate pyruvic transaminase(ALT)were detected by Enzyme-linked immunosorbent assay as the indicator of the impaired hepatic function.The microdosis albumen (mAlb)and acetylglucosaminidase(NAG)in urine were detected by end-point method and alkaline picric acid as the renal damage indicators.Results A total of 661 people investigated,of which 144 cases were arsenic poisoning patients.The rates of abnormal liver function were significant hisher in arsenic poisoning group[10.42% (15/144)]than that in control[5.22%(27/517)],and both wag significant[X2=5.107,P＜0.05;OR=2.11,95%CI (1.09-4.08)].The geometric mean of mAlb/Ucr was 2.16 mg/g Cr in control,and 2.31 mg/g Cr in arsenic poisoning group,and both was not significant(t=-1.71,P＞0.05).The geometric mean of NAG waft higher in arsenic poisoning group(2.43 U/g Cr)than that in the control(2.22 U/g Cr),and both was significant(t=-3.55, P＜0.05).Conclusions The damage of the liver and renal function were related with endemic arsenism,and NAG is the early indicators suggesting impaired renal function due to endemic arsenism.

OBJECTIVETo investigate the effects of antisense oligonucleotide specific to K-ras point mutation on human pancreatic carcinoma cell PC-2 in vitro.

METHODSHuman pancreatic carcinoma cell PC-2 was transducted with antisense oligonucleotide specific to K-ras point mutation by liposome; the expression of target gene was studied with immunohistochemistry and in situ hybridization. The effect on cell proliferation was studied by artificial count, MTT and mass test.

RESULTSThe expression degree of ras protein and K-ras mRNA transducted with antisense oligonucleotide decreased apparently compared with control group and sense oligonucleotide group 48 h after tansduction. The inhibitory effect on cell proliferation was confirmed by artificial count, MTT and mass test.

CONCLUSIONSAntisense oligonucleotide specific to K-ras point mutation has an apparent inhibitory effect on target gene expression and cell proliferation of human pancreatic carcinoma cell in vitro.

Cell Proliferation ; drug effects ; Genes, ras ; genetics ; Humans ; Oligonucleotides, Antisense ; genetics ; pharmacology ; Pancreatic Neoplasms ; genetics ; pathology ; Point Mutation ; genetics ; Transfection ; Tumor Cells, Cultured

Objective To investigate the incidence of lower urinary tract symptoms(LUTS) and bladder function in the community-dwelling elderly females. Methods The questionnaires were administered,including complaints of LUTS,International Prostate Symptoms Score(IPSS) and quality of life assessment.Meanwhile,uroflowmetry was performed and volume of residual urine was measured. Results The total number of women surveyed was 359.According to IPSS,the prevalence of moderate to severe LUTS(IPSS≥8) was 39.0%.The prevalence in those with age of 50-59,60-69 and ≥70 years were 35.1%,46.2% and 54.8%,respectively(P=0.034).Of all the women surveyed,73.8% had predominantly irritative symptoms.The maximum flow rates(Qmax)were(24.5?11.5) mL/s,(22.7?11.0) mL/s and(14.5?8.2) mL/s,respectively for these age groups(P

Objective To investigate the prevalence for endemic fluorosis of drinking water type and to discuss the relationship between endemic fluorosis and urinary fluorine in Linyi county, Shanxi province. Methods In 2006, three counties were selected as heavy, medium and control areas according to the distributing feature of the disease. The dental fluorosis in each spots was examined by Dean method. The levels of urinary fluorine were determined by fluorine selective ion electrode. The skeletal fluorosis of adults were examined by X-ray. Results There was evident differences of dental fluorosis and skeletal fluoresis among the heavy and the medium endemic fluorosis and control areas(X~2 = 410.945, P < 0.01 ), the prevalence of dental fluoresis in the medium area and the heavy area were 92.34% (253/274), 90.09% ( 291/323), significantly higher than in the control area[23.27% (64/275), X~2 = 274.927,268.287, all P < 0.01]. The heavy area had the highest rate of the skeletal fluorosis rate [59.75% (141/236) ], the medium area had the middle-level of the skeletal fluorosis rate[24.76%(52/210), X~2 = 183.578, P< 0.01]. Urine fluorine contents in both beavy[ (4.69 ± 0.17)mg/L] and medium areal (4.86 ± 0.13)mg/L] were higher than that in the control areas[ (1.75 ± 0.04)mg/L, H = 411.197, P< 0.01], and there was linear relevance between the different degree of skeletal fluorosis and urine fluorine contents (r = 0.508, P < 0.01). Conclusions The local fluoresis condition of Linyi county in Shanxi province was serious. The degree of skeletal fluorosis is associated with the fluoride content in urine.

Cell Line, Tumor ; Genes, ras ; Humans ; Oligonucleotides, Antisense ; therapeutic use ; Pancreatic Neoplasms ; genetics ; therapy ; Point Mutation ; RNA, Messenger ; analysis

A patient referred to our hospital, diagnosed with left idiopathic chronic orchialgia, was evaluated with a thorough medical and psychiatric history, physical examination, scrotal ultrasound and magnetic resonance imaging. Conservative management failed. The patient had temporary pain relief after undergoing outpatient cord block three times. Microsurgical denervation of the left spermatic cord was operated in March, 2011. A pain questionnaire was used to determine efficacy before and after operation, and complete pain relief was noted at one week after operation. The follow up period was 12 months, at the end of which the pain score was still zero. No complications, including testicular atrophy and hydrocele, occurred. Microsurgical denervation of the spermatic cord can be a minimally invasive, safe and effective management option for treatment of idiopathic chronic orchialgia.
Denervation ; methods ; Humans ; Male ; Middle Aged ; Spermatic Cord ; surgery ; Testicular Diseases ; surgery

BACKGROUNDToll-like receptor-4 (TLR-4) is integrally involved in lipopolysaccharide (LPS) signaling and has a requisite role in the activation of nuclear factor-κB (NF-κB). The exact mechanisms that lend perfluorocarbon (PFC) liquids a cytoprotective effect have yet to be elucidated. Therefore we examined in an in vitro model the cytoprotective effect of PFC on LPS-stimulated alveolar epithelial cellls (AECs).

METHODSAECs (A549 cells, human lung adenocarcinoma cell line) were divided into four groups: control, PFC, LPS and LPS + PFC (coculture group) groups. Intercellular adhesion molecule-1 (ICAM-1) was detected by ELISA, tumor necrosis factor-α (TNF-α) and interleukin-8 (IL-8) were detected by radioimmunological methods. The expression of TLR-4 mRNA and protein was detected by real time PCR and Western blotting, respectively. The activation of NF-κB was detected by Western blotting (proteins of I-κBa and NF-κB p65).

RESULTSICAM-1, TNF-α and IL-8 were significantly increased in LPS-stimulated AECs groups. The expression of TLR-4 mRNA and protein in LPS-stimulated groups was markedly increased. Meanwhile, NF-κB was activated as indicated by the significant degradation of IκB-α and the significant release of NF-κB P65 and its subsequent translocation into the nucleus. There were no significant effects of PFC alone on any of the factors studied while the coculture group showed significant downregulation of the secretion of ICAM-1, TNF-α and IL-8, the expression of TLR-4 mRNA and the activity of NF-κB.

CONCLUSIONSTaken together, our results demonstrate that LPS can induce AEC-related inflammatory injury via the activation of TLR-4 and subsequent activation of NF-κB. PFC is able to protect AECs from LPS-induced inflammatory injury by blocking the initiation of the LPS signaling pathway, which is indicated by the significant decrease of TLR-4 expression and NF-κB activation.

Blotting, Western ; Cell Line, Tumor ; Epithelial Cells ; drug effects ; immunology ; Fluorocarbons ; pharmacology ; Humans ; Inflammation ; chemically induced ; immunology ; Intercellular Adhesion Molecule-1 ; genetics ; metabolism ; Interleukin-8 ; genetics ; metabolism ; Lipopolysaccharides ; pharmacology ; NF-kappa B ; genetics ; metabolism ; Pulmonary Alveoli ; cytology ; Real-Time Polymerase Chain Reaction ; Toll-Like Receptor 4 ; genetics ; metabolism ; Tumor Necrosis Factor-alpha ; genetics ; metabolism

To investigate the mechanisms of serine/threonine kinase Pim-3 inhibition of fulminant hepatic apoptosis. Thirty-two rats were randomly divided into four groups (n = 8 each): normal controls (A); pretreatment with Ringer's solution (B), vector plasmid (C), or Pim-3 recombinant plasmid (D) by hydrodynamics-based procedure followed by intraperitoneal injections of lipopolysaccharide (LPS) and D-galactosamine (D-GalN) after one day. At 8 h after the LPS/D-GalN injections, liver tissues were collected from all groups of mice and analyzed for cell apoptosis by detecting caspase-3 activity (measured in relative fluorescence units, RFU). Changes in expression of relevant genes were determined by RT-PCR and Western blotting. Caspase-3 activity was induced in response to LPS/D-GalN injection. Pim-3-pretreated rats showed a lower level of caspase-3 activity than the Ringer's-pretreated or vector plasmid-pretreated rats [(141.7+/-13.7)RFU vs. (508.1+/-32.0) or (493.5+/-33.1) RFU; all P less than 0.01]. High expressions of the liver injury marker gene, iNOS, and the apoptosis-induced genes, p53 and Bax, were found after LPS/D-GalN challenge, and were suppressed by exogenous Pim-3 gene injection. In addition, exogenous Pim-3 gene injection induced high expression of the liver anti-apoptosis protein, Bcl-2, but had no effect on Bax protein expression. The Pim-3 gene can block fulminant hepatic apoptosis by affecting the expression of the iNOS liver injury gene and the p53, Bax and Bcl-2 apoptosis-related genes.
Animals ; Apoptosis ; Caspase 3 ; metabolism ; Liver ; metabolism ; pathology ; Liver Failure ; metabolism ; pathology ; Male ; Protein-Serine-Threonine Kinases ; genetics ; Rats ; Rats, Wistar