Carcinoma, Squamous Cell ; genetics ; metabolism ; Head and Neck Neoplasms ; genetics ; metabolism ; Humans ; MicroRNAs ; genetics ; metabolism

An inductively coupled plasma mass spectrometry ( ICP-MS) was developed for the direct determination of Be, Na, Mg, Al, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Zr, Mo, Sr, Cd, Ba, Pd, Ag, Sn, Au and Pb in lithium hexafluorophosphate. The sample was dissolved with absolute ethyl alcohol to analyze the above 26 impurity elements in the solution by ICP-MS. The condensation and deposition of high concentrations of carbon in mass cone interface and ion lens, which will decrease the sensitivity of element analysis, can be avoided effectively by introducing O2 to plasma. The mass spectral interferences of polyatomic ions to analytes were corrected by collision reaction cell (CRC). The matrix matching method was used to corrected matrix effect. Satisfactory linearity of each working curve of 26 impurity elements was obtained. The correlation coefficients being over 0. 9995, the detection limits for the investigated elements were in the range of 0. 6-32 ng / L, the relative standard deviation of each element within 2. 5% -7. 3% , and the recovery of each element at 90. 6% -108. 6% . The method had been applied to the determination of trace elements in lithium hexafluorophosphate with satisfactory results.

OBJECTIVE: To prepare lincomycin hydrochloride glycerol paint and to determine its content. METHODS: Lincomycin hydrochloride glycerol paint was prepared using lincomycin hydrochloride and dyclonine hydrochlorideas as main components; the contents of the two main components were determined by HPLC. RESULTS: The linear ranges of lincomycin hydrochloride and dyclonine hydrochloride were 20～200 ?g?mL-1(r=0.999 8) and 10～100 ?g?mL-1(r=0.999 9),respectively. The average recoveries(n=5) were 99.61% and 99.28%,with RSD stood at 0.439% and 0.818%,respectively. CONCLUSION: Both the preparative method and determination method for lincomycin hydrochloride glycerol paint are simple and feasible.

Objective: To observe the effect of Weixikang apozema on growth factor of acetic acid gastric ulcer rats.Methods: The rats were divided into blank control group(abbreviated as blank group),model group,ranitidine group,Weixikang low dosage group(abbreviated as low dosage group) and Weixikang high dosage group(abbreviated as high dosage group) at random,each group has 8 rats.The content of epidermal growth factor(EGF) and transforming growth factor-?(TGF-?) were measured with radioimmunoassay.The protein expression of EGF,TGF? and EGFR were measured with immunohistochemical method.Results: The content of EGF and TGF-? and the protein expression of EGF,TGF-? and EGFR in low dosage group and high dosage group have increased(P

Objective: To perform the bacterial endotoxin test of Pulse-Engendering Injection.Methods: The interference actions of the different dilutabilities of injection at the greatest effective diluent range were observed with some sensitivity of TAL. Results: When 0.5EU/ml sensitivity of TAL was used and the dilutability of sample was 1∶8, the injection showed obvious enhancement action, but when 0.25EU/ml senitiity of TAL was used and the dilutability was 1∶16, the enhancement action of injection could be eliminated. Conclusion: The bacterial endoxin test can be carried out with 0.25EU/ml sensitivity of TAL when the dilutability of sample is 1∶16, the limit dose of bacterial endotoxin is controlled thereby.

Adolescent ; Adult ; Boron ; adverse effects ; Humans ; Male ; Occupational Exposure ; Sperm Count ; Sperm Motility ; drug effects ; Spermatozoa ; drug effects

OBJECTIVE:To prepare borneol-puerarin liposomes,and to investigate its brain-targeting. METHODS:Film dis-persion ultrasonic method was used to prepare borneol-puerarin liposomes. The morphology of liposomes was observed by TEM;the particle size and Zeta potential were measured by laser particle size analyzer;the entrapment efficiency were measured by sepha-dex gel filtration method. Compared with Puerarin injection,brain-targeting of borneol-puerarin liposomes and puerarin liposomes via intravenous injection of mice tail was studied with relative intake rate and peak concentration ratio. RESULTS:Borneol-puerarin liposomes were spherical or quasi-circular;its mean particle size,polydispersity index and Zeta potential were 226 nm,0.263 and-21.3 mV respectively. The entrapment efficiency were(65.32±2.13)%. Compared with Puerarin injection,relative intake rate of puerarin liposome and borneol-puerarin liposome were 1.68 and 2.58,and peak concentration ratio were 1.15 and 1.42. CONCLU-SIONS:Brain-targeted borneol-puerarin liposomes are prepared successfully.

OBJECTIVE: To study the therapeutic mechanism of salvianolic acid B (SA-B) in treating hepatic fibrosis. METHODS: Twenty-four Wistar rats were randomly divided into 3 groups: normal control group, untreated group and SA-B-treated group. Rats in the untreated and SA-B-treated groups were injected intraperitoneally with 0.5% dimethylnitrosamine (DMN) for 4 weeks, daily for 3 days each week at a dose of 10 microg/kg, to induce hepatic fibrosis. Then, rats in the SA-B-treated group were given SA-B orally for another 4 weeks. Hydroxyproline (Hyp) contents in liver tissue of the rats in 3 groups were determined with HCl hydrolysis, and collagen type I, transforming growth factor-beta 1 (TGF-beta1), transforming growth factor-beta receptor type I (TbetaRI) and transforming growth factor-beta receptor type II (TbetaRII) were detected by Western blotting. RESULTS: The Hyp content and the expressions of collagen type I, TGF-beta1, TbetaRI and TbetaRII in the liver tissue of rats in the untreated group increased significantly as compared with those in the normal control group, while those in SA-B-treated group decreased significantly as compared with those in the untreated group. CONCLUSION: The therapeutic mechanism of SA-B in treating hepatic fibrosis may be related to inhibiting the expressions of TGF-beta1 and its receptors.

Objective: To investigate the effect of Modified Wendan Decoction(MWD) on expression of p-JNK and p-c-Jun in cellular model of AD.Methods: NG108-15 cells were exposured to 5?mol/L A?25-35 for 24h to establish the cell model.After treating with contained-MWD serum,cells morphous were observed,survival rate was tested by MTT and cell apoptosis by FCM,the expression of p-JNK and p-c-Jun was measured by method of immuocytochemistry.Results: MWD obviously reduced the expression of p-JNK and p-c-Jun and cell's apoptotic rate.Compared with the model group,the expression of p-JNK and p-c-jun in the SP600125 group and the group treated with contained-MWD serum decreased significantly(P

OBJECTIVE: To study the results of TEOAE and AABR hearing screening and follow-up in NICU. METHOD: Total 574 cases in NICU were included in this study, all cases received both TEOAE and AABR hearing screening while admission and rescreening when one-month-old. The cases that were abnormal on either test in rescreening were asked to return for diagnostic tests at 3 moths old. The patients who didn't return as required in 3 months were surveyed by call and analyzed. RESULT: Among 574 cases, 472 cases passed both TEOAE and AABR hearing screening while admission. While 102 cases had abnormal test results in either screening test. Thirty-three cases returned for follow-up, 13 of which passed rescreening test one month after discharge, the other 20 cases had ABR diagnostic tests after 3 months. Among them, 8 cases had normal hearing, 12 cases had various degree of hearing loss. Sixty-nine cases lost follow-up. The reason of lost follow-up was as follows, parents changed phone number/contact information, parents didn't understand the screening results, parents believe that their children having no need for further testing; parents had retest in other hospitals, parents didn't pay attention to hearing loss because of other severe complicated comorbidities. CONCLUSION The passing rate (normal) of TEOAE and AABR hearing screening in NICU was 82.2%, non- passing rate wass 17.8%, and the prevalence of hearing loss was high in those followed cases. Hyperbilirubinemia was the main risk factors of hearing loss in our NICU patients. We reviewed the reason for high rate (67.6%) of losing follow-up.
Female ; Follow-Up Studies ; Hearing Tests ; Humans ; Infant, Newborn ; Intensive Care Units, Neonatal ; statistics & numerical data ; Lost to Follow-Up ; Male ; Neonatal Screening ; Retrospective Studies