Aldehydes ; chemistry ; pharmacology ; Chromatography, High Pressure Liquid ; DNA Adducts

p70 ribosomal protein S6 kinase (p70S6K), an important member of AGC family, is a kind of multifunctional Ser/Thr kinases, which plays an important role in mTOR signaling cascade. The p70 ribosomal protein S6 kinase is closely associated with diverse cellular processes such as protein synthesis, mRNA processing, glucose homeostasis, cell growth and apoptosis. Recent studies have highlighted the important role of S6K in cancer, which arose interests of scientific researchers for the design and discovery of anti-cancer agents. Herein, the mechanisms of S6K and available inhibitors are reviewed.
Antineoplastic Agents ; Humans ; Protein Kinase Inhibitors ; chemistry ; Ribosomal Protein S6 Kinases, 70-kDa ; antagonists & inhibitors ; metabolism ; Signal Transduction ; TOR Serine-Threonine Kinases

Objective To present and summarize the data concerning the treatment and prognosis of acute limb arterial embolism in West China Hospital.Methods Forty three patients with 52 limbs of acute arterial embolism were treated in West China Hospital from January 2003 to March 2006.There were 15 males and 28 females,aging from 26 years to 77 years 〔(58.88?13.90) years〕.The diagnosis was based on clinical manifestations and results of color Doppler sonography or DSA.The follow-up ranged from 1 month to 39 months.The following factors,which might influence the prognosis,were analysed through multiple linear regression of SPSS 10.0:age,sex,uper limb or lower limb,location of embolus,ischemic time,clinical categories of acute limb ischemia,history of smoking,atherosclerosis and other combined diseases,pervious history of acute limb arterial embolism,operative or nonoperative treatment,and postoperative complications.Results Clinical categories of acute limb ischemia include:Ⅰ(n=0),Ⅱa(n=16),Ⅱb(n=29),Ⅲ(n=7).The ischemic time varied from 3 h to 2 weeks.The sources of embolus:heart(n=39),vessle(n=7),iatrogenic origin(n=1),unidentidied origin(n=5).The therapies included embolectomy(n=38),catheter-directed thrombolysis(n=2) and medical treatment(n=12).The following postoperative complications occured:compartment syndrome(n=12),respiratory failure(n=3),alkalolsis(n=3),acute renal failure(n=2),wound infection(n=2) and pulmonary infection(n=1).Two patients died of cerebral infarction in hospital and one patient died of heart failure 3 months after discharge.Thirty-eight patients with 45 diseased limbs were followed up.The results were excellent in 13 limbs,good in 15 ones,fair in 8 ones and poor in 9 ones.The statistically significant influencing factors of prognosis include ischemic time,clinical categories of acute limb ischemia and history of smoking(P

Acute Disease ; Adolescent ; Child ; Child, Preschool ; Drug Resistance, Multiple ; genetics ; Drug Resistance, Neoplasm ; genetics ; Female ; Gene Expression Regulation, Neoplastic ; Humans ; Leukemia ; physiopathology ; Male ; Neoplasm Proteins ; genetics ; RNA, Messenger ; genetics ; metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; Vault Ribonucleoprotein Particles ; genetics

OBJECTIVETo investigate the effect of 6-gingerol, the main active component of ginger, on hair shaft elongation in vitro and hair growth in vivo.

METHODSFirstly, Hair follicles were co-cultured with 3 different concentration of 6-gingerol for 5 days and hair elongation in three groups was measured. Secondly, The proliferative effect of 6-gingerol on DPCs was measured using MTT assay. Thirdly, the expression of Bcl-2 and Bax in DPCs were measured using Western blotting. In vivo study, the influence of 6-gingerol on hair growth in C57BL/6 rats was measured through topical application of 6-gingerol on the dorsal skin of each animal.

RESULTSThe length of hair shaft in 20 microg/ml 6-Gingerol group (0.50 +/- 0.08 mm) is less than 0 microg/ml (0.66 +/- 0.19) mm and 10 microg/ml (0.64 +/- 0.03) mm 6-Gingerol group (P < 0.05). In cell culture, compared to 0 microg/ml and 5 microg/ml 6-Gingerol, 10 microg/ml 6-Gingerol can significantly inhibited the proliferation of DPCs (P < 0.05). Along with the growth inhibition of DPCs by 6-gingerol, the Bax/Bcl-2 ratio increased obviously. In vivo study, the hair length and density decreased a lot after using 1 mg/ml 6-gingerol.

CONCLUSIONS6-Gingerol can suppress human hair shaft elongation because it has pro-apoptotic effects on DPCs via increasing Bax/Bcl-2 ratio. It might inhibit hair growth by prolonging the telogen stage in vivo.

Animals ; Catechols ; pharmacology ; Cell Culture Techniques ; Cells, Cultured ; Fatty Alcohols ; pharmacology ; Hair ; drug effects ; growth & development ; Hair Follicle ; drug effects ; growth & development ; Humans ; Mice ; Mice, Inbred C57BL ; Plant Extracts ; pharmacology ; Rats ; bcl-2-Associated X Protein ; metabolism

Twelve cases of Bartter's syndrome were reported and reviewed retrospectively.Usually vomiting was the first sympton in children,while fatigue was common in adults.Bartter's syndrome was characteristic of hypokalemia,metabolic alkalosis,elevations of plasma renin activity,serum angiotersinⅡand aldosterone and juxtaglomerular apperatus hyperplasia.Supplementation of potassium choloride was the main manner of therapy.

Purpose To analyze differential diagnosis between Hashimoto thyroiditis of atypical cell clusters ( ACC) and papillary thy-roid carcinoma (PTC). Methods 153 cases of Hashimoto thyroiditis (HT) were collected and divided into 3 groups:PTC group (49 cases), ACC group (32 cases), and HT as control group (72 cases). Morphology observations were done. CD56, CK19, galectin-3 and Ki-67 were detected by immunohistochemistry. Results Morphologic differences were observed among the groups. PTC showed milder positive expression of CK19 and galectin-3, and weaker positive expression of CD56 than that of ACC. Ki-67 index in ACC and PTC was lower than that of HT. Conclusions Morphological characteristics combined with CD56, CK19, Galectin-3 and Ki-67 evalu-ations could be valuable in the differential diagnosis between PTC and ACC.

Objective To explore the danger of lead exposure in newborns who accepted the blood stored in blood bank for blood change treatment.Methods The lead level of blood was examined before and after blood change treatment for 37 neonates with hyperbilirubinemia who accepted 53 cases blood stored in blood bank during Jun.to Dec.2006.The level of blood lead was measured by graphite stove atom absorb spectrum method.Results The average lead level of 53 cases blood stored in blood bank was 101.02 ?g/L,which had attained the level of lead poisoning.There were 15 cases(28.5%) whose blood lead levels was very high(≥100 ?g/L),3 cases whose blood lead level ≥200 ?g/L.After blood change treatment,the percentage of the blood lead level ≥100 ?g/L rose from 2.9% to 19.0%.The average level of blood lead after blood change treatment was higher than before(P

Three bactreiophages of Pseudomonas aeruginosa were isolated from sewage and named as PaP1, PaP2 and PaP3. All belong to double-strand DNA phages, their genome is about 47kb, 34kb and 24kb respectively. The titre (pfu/mL) of three phages is respectively 109, 1011 and 1011, PaP1 is lytic phage, both PaP2 and PaP3 are lysogenic. Under electron microscope, All show icosahedral heads with diameter of 70nm, 55nm and 65nm respectively. PaPl belongs taxonomically to Myoviridae, and both of PaP2 and PaP3 belong to Pedoviridae. The phage-re-sistance and substitution phenomenon of the resistant flora for the sensitive were observed, and the mutation frequence of Pseudomonas aeruginosa resistant to the phage is about 1.4 ? 10-7 ~ 7.9 ?10-7 determined by end-point -titer method.

OBJECTIVEThe purpose of this study was to discuss the relationship between genetic polymorphism of promoter region let-7 and genetic susceptibility to hepatocellular carcinoma (HCC) in Chinese population.

METHODSIn this case-control study, 1300 cases of HBV positive patients were recruited in case group and another 1344 cases of persistent chronic HBV carriers were selected as control. 5 ml of blood sample was collected from each subject, from which the DNA was extracted; and rs10877887 and rs13293512 in promoter region let-7 were selected as the study sites. The polymorphism was detected by TaqMan allelic discrimination assay and the OR value (95%CI) was evaluated by Logistic Regression Method to analyze the relationship between susceptibility to HCC and different genotypes.

RESULTSThe frequencies of genotype TT, CT and CC in site rs10877887 were 43.0% (542/1261), 44.7% (564/1261) and 12.3% (155/1261) respectively in case group; while separately 44.0% (581/1319), 44.4% (585/1319) and 11.6% (153/1319)in control group. The frequencies of genotype TT, CT and CC in site rs13293512 were 32.0% (406/1270), 48.1% (611/1270) and 19.9% (253/1270) respectively in case group; while separately 33.1% (427/1291), 49.4% (638/1291) and 17.5% (226/1291) in control group. The results of multifactor logistic regression analysis showed no statistical significance in the relationship between different genotype TT, mutated genotype C in site rs10877887 and susceptibility to HCC (CC + CT vs TT, adjusted OR = 1.05, 95%CI: 0.90 - 1.23); and either no statistical significance in the relationship between different genotype TT, mutated genotype C in site rs13293512 and susceptibility to HCC (CC + CT vs TT, adjusted OR = 1.06, 95%CI: 0.89 - 1.25). The united-analysis of the two sites showed the frequencies of 0, 1, 2 and 3-4 mutated-genotype C were 13.3% (164/1235), 36.2% (447/1235), 33.0% (408/1235) and 17.5% (216/1235) respectively in case group; and separately 14.2% (181/1269), 37.0% (469/1269), 33.1% (420/1269) and 15.7% (199/1269) in control group. The susceptibility to HCC in 1,2,3-4 mutated-genotype C carriers were 1.05 (0.81 - 1.34), 1.07 (0.83 - 1.38) and 1.22 (0.91 - 1.62) times of the non-mutated genotype subjects; but there was no statistical significance (Wald χ(2) = 1.79, P = 0.181).

CONCLUSIONThe polymorphism of study sites rs10877887 and rs13293512 may not be the biomarker of susceptibility to HCC in Chinese.

Adult ; Carcinoma, Hepatocellular ; genetics ; virology ; Case-Control Studies ; Female ; Gene Frequency ; Genetic Predisposition to Disease ; Genotype ; Hepatitis B virus ; Humans ; Liver Neoplasms ; genetics ; virology ; Male ; MicroRNAs ; genetics ; Middle Aged ; Polymorphism, Single Nucleotide ; Promoter Regions, Genetic