Objective To study the relation between the effect of Curcumin on the proliferation and activation of hepatic stellate cells(HSC)and the expression of the peroxisome proliferator-activated receptor?(PPAR?).Methods The rat HSC was isolated from SD rats through in situ perfusion of liver with Pronase E and density-gradient centrifugation with Nycodenz.The subcultured cells were treated with corresponding compound.The inhibition effect on HSC proliferation was determined by MTT colorimetry.The total RNA was extracted by TRizol reagent,and the gene expression level of PPAR? and smooth muscle actin (?-SMA)were determined by semi-quantitative RT-PCR.The total cellular proteins were extracted and separated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis,and the protein level of ?-SMA was determined by Western blotting.Results The MTT analysis results showed that Curcumin inhibited HSC proliferation between 10 and 50 ?mol/L in a dose-dependent manner.In the Day 1,4,7 of primary HSC and passaged HSC,the expression of PPAR? mRNA decreased with HSC activation extent;Curcumin could up-regulate the expression level of PPAR?.Curcumin suppressed the expression of ?-SMA not only at the gene level but also at the translation level.But all these effects of Curcumin on HSC could be blocked by the PPAR? specific antagonist GW9662.Conclusion The effect of Curcumin on HSC cell proliferation and activation is through the up-regulation of PPAR? signal.

Aim To study the effect of Curcumin on the apoptosis of hepatic stellate cells (HSC), and the correlation between the effect and peroxisome proliferator-activated receptor ?(PPAR?) signal.Methods The HSC was isolated from normal SD rats through in situ perfusion of liver with protease E and density-gradient centrifugation with Nycodenz.The subcultured cells were treated with corresponding compounds. Cell apoptosis was detected by Hoechst 33258 staining. PPAR? subcellular distribution was detected by immunofluorescent staining. Total RNA, total protein and nuclear protein were extracted respectively, target gene and protein levels were determined by semi-quantitative RT-PCR or Western blot.Results There was nearly no apoptosis in activated HSC. Curcumin treatment induced the apoptosis of HSC, enhancing PPAR? nuclear translocation/redistribution.At the transcription and translation level,curcumin upregulated nuclear PPAR? expression, inhibited anti-apoptotic Bcl-2 expression, and promoted pro-apoptotic Bax expression; but all these effects could be reversed by PPAR? antagonist GW9662.Conclusions Curcumin induces HSC apoptosis by enhancing PPAR? expression and nuclear translocation/redistribution.

Animals ; Ear Canal ; surgery ; Female ; Gene Expression ; Hypothalamus ; metabolism ; Nerve Block ; Pregnancy ; RNA, Messenger ; genetics ; Rats ; Rats, Sprague-Dawley ; Receptors, N-Methyl-D-Aspartate ; genetics ; metabolism

Animals ; Female ; Gene Expression Regulation, Developmental ; Inferior Colliculi ; metabolism ; N-Methylaspartate ; genetics ; metabolism ; RNA, Messenger ; genetics ; Rats ; Rats, Sprague-Dawley ; Receptors, N-Methyl-D-Aspartate ; genetics ; metabolism

Adenocarcinoma, Follicular ; pathology ; surgery ; Aged ; Aged, 80 and over ; Carcinoma, Papillary ; pathology ; surgery ; Follow-Up Studies ; Humans ; Lymphatic Metastasis ; Middle Aged ; Neck Dissection ; Survival Analysis ; Thyroid Neoplasms ; pathology ; surgery ; Thyroidectomy ; methods

Objective To explore the effect of circadian rhythm disorder on cognitive decline and neurologic impairment after traumatic brain injury (TBI) in rats.Methods Rats were subjected to a weight-drop model of TBI,then the rat models were divided into 2 groups ac-cording to the environmental length of day and night ,namely,the whole day group (12 h light/12 h light) and the control group (12 h light/12 h dark).After 14 days,the Morris water maze test and step-down test were carried out to evaluate the memory of the rats in each group . HE staining and immunohistochemistry ( BrdU, Ki-67) were carried out to evaluate the degree of the neurologic impairment of the rats in each group.And the mRNA expressions of Caspase-3,Caspase-9,Bcl-2 and Bax were evaluated with realtime PCR .Results The memory function of the rats in whole day group was significant lower than control group ;the damage degree of the cells in the hippocampus and the cortical lesion volume in whole day group were significant higher than control group ;the cell proliferation rate and newborn cell survival rate in the whole day group decreased significantly compared with the control group ;the mRNA expression of Bcl-2 in whole day group was signifi-ant lower than control group ,and the mRNA expression of Caspase-3,Caspase-9 and Bax in whole day group was signifiant higher than control group.Conclusion Circadian rhythm disorder can worsen TBI-induced cognitive decline and neurologic impairment .

Adult ; Aspergillosis ; etiology ; therapy ; Aspergillus fumigatus ; Heart Transplantation ; Humans ; Male

Adolescent ; Child, Preschool ; Coronary Aneurysm ; diagnosis ; etiology ; Coronary Angiography ; Echocardiography ; Female ; Humans ; Infant ; Male ; Mucocutaneous Lymph Node Syndrome ; complications

To study the effect of wearing overnight orthokeratology ( OK) contact lens on corneal topography and tears in adolescents.METHODS: The diopter, corneal curvature, corneal surface regularity index ( SRl ) , tear break - up time ( BUT ) , Schirmer l test, and corneal fluorescent ( FL ) were recordedon 40 (80 eyes) adolescent myopia patients (mean age 13. 68±2. 32 years), who had worn OK contact lensfor more than 1 year, with mean spherical equivalent refraction -3. 61 ± 1. 48D before wearing OK contact lens. These indexes were tested and recorded before the patients' wearing OK contact lens and 5 times (1wk and 1, 3, 6, 12mo after the first wearing) during the patients' overnight wearing OK contact lens for 8~10 hours per day.RESULTS: Compared with pre - wearing, at post -wearing OK contact lens 12mo, the mean spherical equivalent refraction was apparently decreased from -3.61±1. 48D to -1. 39±1. 31D(P<0. 01). The corneal curvature was significantly flattened from 42. 29 ± 1. 55D to 40.13±1. 41D (P<0. 01). Mean SRl was increased from 0. 34± 0. 01 to 0. 37 ± 0. 01 ( P<0. 01 ). Mean BUT was decreased from 10. 39±2. 25s to 7. 26±1. 77s (P<0. 01). These indexes were stable at 1wk after wearing OK contact lens overnight and had no significant differences during the following (1, 3, 6, 12mo after wearing) tests (P > 0. 05 ). There were no significant differences on Schirmer▏test during the 12mo of OK wearing(P>0. 05). The cases of corneal fluorescent staining increased were mainly grade l, and the number of corneal staining grade l at 1 wk and 1, 3, 6, 12 mo after wearing were 15 eyes (18. 8%), 9 eyes (11. 3%),13 eyes (16. 3%), 9 eyes (11. 3%), and 12 eyes (15. 0%). BUT of corneal staining grade l wasdecreased significantly, compared with the BUT of corneal staining grade 0 during the 12mo of OK wearing (P<0. 05). CONCLUSlON: OK contact lens can significantly decrease the degree of myopia and K value of corneal curvature without changing tear volume. However, tear film stability weakens, which needs regular follow-up.

Objective To investigate the expression and significance of CDK4 and cyclin D1 in gastric carcinoma,and to discuss their correlation with WHO histological classification,TNM stages and lymph node metastasis.Methods Forty paraffin wax specimens from patients with gastric carcinoma were collected and expression of CDK4 and cyclin D1 proteins were detected by immunohistochemistry.Results Immunohistochemistry demonstrated that the positive rates for CDK4 and cyclin D1 protein were 65% and 55%,respectively.There was positive correlation between CDK4 and cyclin D1 proteins(P0.05).Conclusion CDK4 and cyclin D1 proteins are frequently overexpressed in gastric carcinoma and there is a positive relationship between the two proteins,which may be involved in the development of gastric carcinoma.