Objective To investigate the changes in proliferation index (PrI) of gingival fibroblasts in nifedipine-induced gingival hyperplasia ( NIFr-HGF). Methods Gingival fibroblasts were derived from a patient with nifedipine-induced gingival hyperplasia. Cells were induced by 10 ng/mL and 1 000 ng/mL nifedipine ( low- and high-concentration drug intervention groups), respectively. Cells were harvested 18 h and 30 h after intervention, cell cycles were detected by flow cytometry, and Prls were calculated. NIFr-HGF without nifedipine induction were served as blank control. Results After induction for the same time, Prls of NIFr-HGF cell cycle of low- and high-concentration drug intervention groups were significantly higher than those of blank control group (P <0.05) , while there was no significant difference between low and high-concentration drug intervention groups (P > 0.05). In low and high-concentration drug intervention groups, Prls of NIFr-HGF cell cycle after intervention for 30 h were significantly higher than those after intervention for 18 h [(57. 54 ± 0.019)% vs (21.15 ±0.011)%, and (59.36 ±0.031)% vs (19.01 ±0.012) %, respectively] (P < 0.05). Conclusion For patients with nifedipine-induced gingival hyperplasia, PrI of NIFr-HGF cell cycle increases with time of nifedipine intervention, while is not significantly related to drug concentration.

Pulmonary cavitary lesions in children consist of a group of heterogeneous diseases, mainly caused by infections, and their imaging manifestations can be similar.It is clinically difficult to distinguish them from other lesions such as bullae, cyst, and emphysema.Some scholars have advanced a concept about thin wall(4 mm or less) and thick wall(more than 4mm).People tried to make this distinction by defining cyst as a thin wall and cavity as a thick wall, but there are considerable overlaps between the two categories in etiology and pathophysiology.They are sometimes difficult to distinguish for imageology, and it is still necessary to find the cause of the disease based on the characteristics.This review divides etiology into two categories: infectious and non-infectious etiology.Combined with chest imaging examination, the purpose is to analyze and summarize the features of pulmonary cavitary lesions in children, and provide a diagnostic idea for differentiating various pulmonary cavities to guide clinical treatment.

OBJECTIVE: To study the effect of biological activity of tumstatin 7 peptide (CNYYSNS) on the cell proliferation and apoptosis of B16 melanoma cell. METHODS: The inhibitory effect of tumstatin 7 peptide on the proliferation of B16 cell was observed by MTT and cell growth curves. The influence of tumstatin 7 peptide on morphology of B16 cell was perceived by TUNEL, HE staining and the transmission electron microscope(TEM). Human umbilical vein endothelial cell (ECV304) as control cell was detected that tumstatin 7 peptide affected the proliferation of non-tumor cells. RESULTS: Tumstatin 7 peptide can significantly inhibit the proliferation of B16 cell in dose-and time-dependent manner. Its IC50 was 8.53 × 10-5 mol·L-1. The mophology of B16 cell was obviously changed by means of TUNEL assay, HE staining and TEM. They appeared karyopyknosis and apoptotic bodies. The apoptosis rate of B16 cell was 68.45%. The effect of 7peptide on human endothelial cell was weak, its IC50 was 5.78 × 10-4mol·L-1. CONCLUSION: Tumstatin 7 peptide can inhibit the proliferation of B16 cell and promote B16 cell apoptosis. It has little effect on endothelial cell, which revealed 7 peptide having a certain specificity of anti-tumor. It will be of great potential value to melanoma treatment.

Red cell concentrates (Hct≥90%) weresuspended in SAGS medium(RCS.contain-ing sodium chloride,adenine,glucose,sucrose),and in H(?)gman's SAGM me-dium (containing sodium chloride,adenine,glucose,mannitol).Both were stored at4?2℃ for 35 days and compared withbiochemical tests.The results of posttrans-fusion survival,ATP,2,3-DPG,pH,K~+ tests between the two preparationswere similar,and the mean values ofinvitro hemolysis of SAGS-RCS was signi-ficantly lower than that of SAGM-RCS,i。e.1.71?0.95g/L and 3.10?0.19g/L res-pectively (P

OBJECTIVEThis study aimed to investigate the expression function of substance P and the formation of osteoclasts in the periodontal tissues after the inferior alveolar nerve sectioned in rats.

METHODSThirty Wistar male rats were used in the experiment and were divided into six groups (n = 5) randomly: 0 d (normal), 3 d, 7 d, 14 d, 21 d, and 28 d. The periodontal tissues were removed from the denervation of the inferior alveolar nerve in rats. The periodontal tissues were checked by paraffin sections through immunohistochemical staining to trace the expression of substance P and through tratrate resistant acid phosphatase (TRAP) staining to detect the osteoclasts. The average optical density and osteoclast were measured, and the obtained data was statistically analyzed.

RESULTSThe expression level of substance P in the first three days decreased significantly after the inferior alveolar nerve was cut. In addition, the lowest expression level was measured after 7 d. Normal levels in the periodontal tissue were measured after 21 d. In addition, we found that osteoclasts vary proportionally with the changes in substance P.

CONCLUSIONThe changes in substance P is positively correlated with the quantity of osteoclasts after the inferior alveolar nerve section. Therefore, we deduce that substance P may regulate the differentiation of osteoclasts formation, and thereby participate in the balancing of aveular bone metabolism.

Adenoma ; Diagnosis, Differential ; Hamartoma ; Humans ; Nasal Cavity ; surgery ; Paranasal Sinuses ; Respiratory Mucosa

Objective To study the efficacy and side effects of Ganciclovir combined with L-ornithine-L-aspartate on infant cytomegalovirus(CMV) hepatitis.Methods Sixty infants with CMV hepatitis hospitalized in our hospital from Dec.2009 to Dec.2010 were treated with ganciclovir combined with L-ornithine-L- aspartate.The parameters observed in the study included the pre-and post-treatment data on total Bilirubin (TBIL),alanine aminotransferase (ALT),alkaline Phosphatase (AKP)and the retraction of liver and spleen,as well as the adverse reactions of the treatment.Results The treatment significantly decreased serum TBIL (t =5.74,P ＜ 0.05 ),ALT( t =2.92,P ＜ 0.05 ) and liver( t =8.27 P ＜ 0.05 ) and spleen volume ( t =5.03,P ＜0.05).However,side effects such as liver damage and rash occurred occasionally during the ganciclovir treatment.Intravenous infusion of L-omithine-L-aspartate caused side effects such as vomiting and other mild gastrointestinal reactions.Conclusion The treatment of Ganciclovir combined with L-ornithine-L-aspartate on infant cytomegalovirus hepatitis created good efficacy and can be considered as the first treatment choice.Though it is relatively safe,adverse reactions should be monitored during the treatment.

Humans ; Male ; Prostate-Specific Antigen ; blood ; Prostatectomy ; Prostatic Neoplasms ; blood ; metabolism ; radiotherapy ; surgery

OBJECTIVE: To investigate the effect of Salvia Miltiorrhiza injection (SMI) on peritoneal dialysis solution (PDS) induced injuries of peritoneal structure and function in a rat model, and to observe the relationship between the failure of peritoneal dialysis and expressions of aquaporin-1 (AQP-1) and zonula occluden-1 (ZO-1) in peritoneal tissues. METHODS: Fifty-six SD rats were randomly divided into normal control group, 1.5% PDS group, 4.25% PDS group, 1.5%PDS+1% SMI group, 1.5%PDS+2% SMI group, 4.25% PDS+1% SMI group and 4.25% PDS+2% SMI group. Two-hour peritoneal dialysis test was performed in rats in different groups by intraperitoneal injection for 8-week. Then rats were killed on the 8th week, and the bloods and peritoneal tissues were gathered. The rate of ultrafiltration, clearance rates of urea nitrogen, creatinine and glucose of peritoneum and content of total protein in PDS were detected. Peritoneal membrane histology was evaluated by light microscopy and transmission electron microscopy. Expressions of ZO-1 and AQP-1 proteins in peritoneal tissues were detected by immunohistochemical method, and AQP-1 protein expression was also detected by Western blotting technique. RESULTS: Compared with normal control group, using of 1.5% PDS and 4.25% PDS caused the changes of structure and function in peritoneum, such as pathological change of peritoneum, decreasing of the rate of ultrafiltration (P<0.05), clearance rates of creatinine and glucose (P<0.01) and the expression of ZO-1 protein (P<0.05), and increasing of the expression of AQP-1 protein (P<0.05). Compared with the simple PDS groups, the pathological damage of peritoneum was lessened and the rate of ultrafiltration and clearance rates of creatinine and glucose were increased in the 1.5% PDS+2% SMI group and 1.5% PDS+2% SMI group. Expression of AQP-1 protein was decreased by 1.5% PDS+2% SMI as compared with 1.5% PDS (P<0.05).[JP] CONCLUSION: SMI can relieve the injuries of function and structure of peritoneum by down-regulating the expression of AQP-1 protein.

Objective To explore the application of ROC curve analysis in evaluating the virtual screening of ?-secretase (BACE-1) inhibitors.Methods Virtual screening were performed for BACE-1 inhibitors using different scoring functions (Surflex-score,D-score,G-score,PMF-score,ChemScore),the screening library was composed of 50 BACE-1 inhibitors and 9 950 inactive compounds.Five scoring functions were used for ranking,and application of ROC curve analysis in evaluating the results of ranking.Results Using D-score to rank the database,the area under the curve (AUC) was 0.935.If specificity was considered primarily,more active compound were obtained by Surflex-score;if sensitivity was considered primarily,more active compounds were obtained by D-score.Conclusions ROC curve consists of sensitivity and specificity together,it can be used to set the right threshold after virtual screening to obtain active compounds as many as possible.