Objective:To establish a method for the determination of related substances in erythromycin ophthalmic ointment. Methods:The extraction method was established and optimized. An HPLC gradient elution method was used for the determination of related substances in erythromycin ophthalmic ointment. Results: One step extraction with PBS (pH 7.0) - methanol(1: 1) had promising effect. After the method validation, it was proved that the method could be used to determine the related substances in eryth-romycin ophthalmic ointment. Conclusion:The method established in the paper provides a better analytical extraction and determina-tion method for the quality control of erythromycin ophthalmic ointment.

0.05);IGF-I after therapy was higher than before(P

Cells, Cultured ; Comet Assay ; DNA Damage ; drug effects ; Dose-Response Relationship, Drug ; Humans ; Lymphocytes ; drug effects ; Styrene ; adverse effects

AIM: To study effect of endogenous carbon monoxide on intracellular calcium concentration and explore the mechanism in brain protection of endogenous CO in focal cerebral ischemia in rats. METHODS: SD rats were divided into three groups randomly, which including hemin, ZnPP group and saline group as control. Respectively saline, hemin, ZnPP were injected intra-peritoneally twelve hours before middle cerebral artery was occluded. Twenty four hours after MCAO model was set up, the concentration of carbon monoxide in blood and intracellular calcium in neural cells was examined. RESULTS: Contrast to saline group, the concentration of CO in blood rose up while intracellular calcium in occluded side decreased in hemin group; the concentration of CO in blood went down while intracellular calcium in occluded side rose up in ZnPP group, there was significant difference among them (P0.05). CONCLUSIONS: It may be one of mechanisms on brain protection in ischemic cerebral tissue that carbon monoxide affected intracellular calcium concentration of neural cells by regulating Ca~(2+)-K~+ channel on cell membrane as a messenger gaseous molecular and neurotransmitter. [

Objective: To observe the clinical efficacy of acupuncture plus medicine in treating laryngopharyngeal reflux due to liver-qi stagnation and spleen deficiency. Methods: A total of 70 patients were divided into a control group and an observation group by the random number table method, with 35 cases in each group. Both groups were treated with conventional medications, and the observation group was treated with additional acupuncture therapy. The reflux symptom index (RSI) and reflux finding score (RFS) were evaluated. Esophageal motility indicators such as lower esophageal sphincter pressure (LESP) and upper esophageal sphincter pressure (UESP), and salivary pepsin level were measured. The clinical efficacy was also compared. Results: The total effective rate of the observation group was higher than that of the control group (P<0.05). After treatment, the RSI and RFS scores in both groups decreased significantly (all P<0.05), and the RSI and RFS scores in the observation group were significantly lower than those in the control group (both P<0.05). There were no significant changes in the LESP and UESP in the control group (both P>0.05), while LESP and UESP in the observation group increased significantly (both P<0.05), and higher than those in the control group (both P<0.05). The salivary pepsin levels in both groups decreased (both P<0.05), and the salivary pepsin level in the observation group was significantly lower than that in the control group (P<0.05). Conclusion: Acupuncture plus medicine can improve symptoms and signs in patients with laryngopharyngeal reflux due to liver-qi stagnation and spleen deficiency, and regulate esophageal motility and salivary pepsin level. Its efficacy is more significant compared with medicine alone.

Using the chromosomal DNA of an ice nucleation active bacterium Erwinia ananas 110 as template, an ice nucleation active (ina) gene was amplified by PCR with Taq plusI DNA polymerase. After sequencing and compared with reported ina genes, the cloned gene was identified as a new ina gene and was registered in GenBank at the accession number of AF387802. The new ina gene, named as iceA, has 3921 bp for its coding region, which encodes 1306 amino acids consisting of repetitive segment (R-domain, 1104aa), which is flanked by N-and C-terminal sequences, with 161 aa and 41aa, respectively.

Aim To study relative bioavailablity of cefaclor effervescent tablets in healthy volunteers. Methods According to the crossover design, A volunteers were each orally given a single does of the 0.75 g cefaclor effervescent tablets and cefaclor capsules with an interval of 5 days between the two formulations.The plasma concentrations of the drug were determined by RP-HPLC.Pharmacokinetic parameters were obtained by ATPK programe,and calculated on the basis of open single compartment model.Results After a single oral dose, the peak levels in plasma averaged Cmax(31.27?5.81)?g?ml-1 and(30.56?5.25) ?g?ml-1 at (0.58?0.12)h and(0.73?0.17)h and AUC0～4(35.48?4.65) ?g?h?ml-1 and (35.89?2.90) ?g?h?ml-1 for tablet and capsule,respectively. Conclusion The result shows that two formulations are bioequivalence.

Objective To investigate the clinical significance of the expression of XIAP mRNA and Survivin mRNA in non-small cell lung cancer and their relationship. Methods RT-PCR was used to evaluate the expression of XIAP mRNA and Survivin mRNA in 59 cases of NSCLC and corresponding normal tissues.Results There was a significant difference in XIAP mRNA expression in primary lung and corresponding normal tissues (61.0 % vs 30.5 %, P<0.05), whereas there were no significant correlation between the XIAP mRNA expression and gender, age, smoking history, histological subtype, T stage, lymph node metastatic status and TNM stage. There was a significant difference in Survivin mRNA expression in primary lung and corresponding normal tissues (81.4 % vs 23.7 %, P<0.05), whereas there were no significant correlation between the Survivin mRNA expression and gender, age, smoking history, histological subtype, T stage, lymph node metastatic status and TNM stage. Conclusion The significant difference of XIAP mRNA and Survivin mRNA expression between the tumor and corresponding normal tissues implies they might play important roles in the carcinogenesis and progress of NSCLC and might become marker for the diagnosis and target for treatment of NSCLC.

Notch signaling pathway consists of three parts: Notch receptor, Notch ligand and intracellular effector. Notch is a family of transmembrane proteins that function both as cell surface receptors and transcription regulators. As the first human gene of this family, Notch1 was discovered in 1991 through the analysis of the chromosomal translocation t(7;9) (q34;q34.3) observed in patients with T-cell acute lymphoblastic leukemia (T-ALL). Since then Notch signaling has been implicated in multiple processes that govern normal morphogenesis, differentiation, cell proliferation and apoptosis. At the same time a role of Notch in the pathogenesis of hematologic and solid malignancies has become apparent. The identification of activating mutations in Notch1 were discovered in over 50% of T-ALL patients. However, whether the mutation in Notch1 is an early event or an secondary event is still unknown. It is becoming increasingly evident that Notch signaling can be both oncogenic and tumor suppressive. This review focuses on the recent findings regarding the Notch signaling during the development and progression of different kinds of hematologic malignancies, the types of mutations in Notch1 in T-ALL and the relationship between Notch signaling pathway and other signaling pathways.In addition, the clinical prospects of Notch inhibitors also are discussed.
Humans ; Neoplasms ; Receptor, Notch1 ; Signal Transduction

Objective To evaluate the detection rate and the efficiency of the modified crushing-cercariae escaping method.Methods The detection rates of the modified crushing-cercariae escaping method and the crushing methods were compared by using a double-blind control experiment with the latter as a gold standard.meanwhile the number of the cercariae was quantified.The efficiency of the two methods aforementioned and the cereariae escaping method were compared in field.Results The detection rate of the modified crushing-cercariae escaping method was 100%.the average number of cercariae in each infected snail was (4 778±1 157);and the number in certain volume of water sample was positively correlated with the number of infected snails.The efficiency of the modified menthed Was 18.2 times and 17.3 times as high as those of the crushing method and cereariae escaping method,respectively.Conclusions The modified crushing-cercariae escaping method Can detect the infected snails quicky and Can quantify the number of infected snails and cercariae,and is suitable for the detection of infected snails in large number.