Objective To investigate the influence of need for cognitive closure on academic performance,interpersonal relationships and subjective well-being of undergraduates.Methods 250 undergraduates from Xinxiang Medical University and 200 undergraduates from Henan Normal University were tested by questionnaires,including of need for cognitive closure scale,interpersonal relationships subscale of SCL-90 and undergraduates＇subjective well-being scale.Results ①The scores in the need for cognitive closure of the better academic-performance undergraduates were significant higher than those of the undergraduates with no better academic-performance ( t =2.21,P ＜ 0.05 ).②Decisiveness of need for cognitive closure was a negative predicator of interpersonal relationships(β =-0.34,P ＜ 0.01 ).③Need for cognitive closure,decisiveness and need for structure factor were significant positive predicators of self-satisfaction,life satisfaction,social behavior,and energy factors in undergraduates＇subjective well-being (β =0.13 ～ 0.32,P ＜ 0.01 ).Need for cognitive closure was a significant predicator of negative emotions and positive emotions (β =-0.13,β =0.13,P ＜ 0.01 ).Decisiveness-factor was a negative predicator of negative emotions and interpersonal relationships in undergraduates＇subjective well-being,and was a positive predicator of family satisfaction(β =-0.22,β =-0.19,β =0.26,P＜0.01 ).Need for structure factor was a significant positive predicator of positive emotions (β =0.13,P ＜ 0.01 ).Conclusion Need for cognitive closure has some influence on undergraduates' academic performance,interpersonal relationships and subjective well-being.

Objective To investigate the effects of long non-coding RNA (LncRNA) solute carrier organic anion transporter family member 4A1 (SLCO4A1-AS1) targeting microRNA-615-5p (miR-615-5p) in esophageal cancer cells on cell proliferation, apoptosis, and expression of inflammatory factors. Methods Real-time quantitative polymerase chain reaction (RT-qPCR) was used to analyze the expression of LncRNA SLCO4A1-AS1 and miR-615-5p in esophageal cancer tissues and cell lines. Eca109 cells were transfected with si-NC, si-LncRNA SLCO4A1-AS1, miR-NC, miR-615-5p mimic, pcDNA, pcDNA-LncRNA SLCO4A1-AS1, si-LncRNA SLCO4A1-AS1+anti-miR-NC, and si-LncRNA SLCO4A1-AS1+anti-miR-615-5p. Cell viability and apoptosis rate were measured by CCK-8 and flow cytometry, respectively; cell proliferation was determined by plate cloning assay; and levels of interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α) in the culture medium were measured using an enzyme-linked immunosorbent assay (ELISA) kit. A dual luciferase reporter gene assay was used to determine the relationship between LncRNA SLCO4A1-AS1 and miR-615-5p. Results Expression of LncRNA SLCO4A1-AS1 was upregulated, and miR-615-5p expression was downregulated in esophageal cancer tissues and cell lines. After inhibiting LncRNA SLCO4A1-AS1 expression, cell viability, the number of cell clones, and levels of IL-6 and TNF-α in the culture medium decreased, while miR-615-5p expression and apoptosis rate increased (P < 0.05). Compared with the miR-NC group, the miR-615-5p group showed increased miR-615-5p expression, levels of Cleaved-caspase-3 protein, and apoptosis rate, and decreased cell viability, the number of cell clones, and levels of IL-6 and TNF-α in the culture medium (P < 0.05). Compared with the si-LncRNA SLCO4A1-AS1+anti-miR-NC group, the si-LncRNA SLCO4A1-AS1+anti-miR-615-5p group showed decreased miR-615-5p expression, levels of Cleaved-caspase-3 protein, and apoptosis rate, and increased cell viability, the number of cell clones, and levels of IL-6 and TNF-α in the culture medium (P < 0.05). Conclusion LncRNA SLCO4A1-AS1 can promote the occurrence and development of esophageal cancer. Inhibiting LncRNA SLCO4A1-AS1 can reduce the proliferation of esophageal cancer cells, decrease the expression of inflammatory factors, and induce apoptosis.

Studies in recent years revel that there is a close relationship between gastrin/cholecystokinin-2 receptors (GAS/CCK-2R) and pancreatic cancer. CCK-2R is widely distributed in human body, but not in normal exocrine pancreas. However, CCK-2R is abnormally expressed in pancreatic carcinoma. The abnormal expression of CCK-2R in pancreatic tissues leads to the abnormal protein expression and activation, changes in acinar cells' morphology and phenotype and an increase in the sensitivity to carcinogenic substances. And some GAS/CCK-2R antagonists can be used for the early and late treatment of pancreatic cancer.

By using the whole-cell clamp-patch technique, the effects of dexamethasone on calcium channel current (Ica) and nicotine receptor channel current (I_(NIC)) were examined. The acute action of glucocorticoid on adrenal medullary chromaffin cell (AMCC) of rats was a significant inhibition of I_(NIC), while no apparent effect was observed on Ica induced by electricity. The results suggest that the acute action of glucocorticoid on catecholamine release in rat AMCC may be directly related to nicotine receptor.

AIM: To study the effects of calcium channel blockers (CCB) on nicotinic acetylcholine receptor current (I_(NIC)) in rat adrenal medullar chromaffin cells (RAMCs). METHODS: By using the whole-cell clamp-patch technique, we have investigated the effects of nifedipine(NIF)、?-conotoxin GVIA and ?-agatoxin IVA on I_(NIC) induced by nicotine(NIC) before and after RAMCs perfusion. RESULTS: After perfusing RAMCs for 5 min, different kinds of calcium channel blockers at different concentration showed significant inhibitory effects on I_(NIC) induced by 50 ?mol/L NIC. The peak inhibition rates of 10 ?mol/L NIF、400 nmol/L ?-conotoxin GVIA and 100 nmol/L ?-agatoxin IVA were (61.7?5.1)%,(29.3?7.4)% and (17.6?7.5)%, respectively. CONCLUSION: The acute effects of different kinds of CCBs on RAMC were that they obviously inhibited I_(NIC) induced by NIC. These results suggest that CCBs may inhibit catecholamine secretion by directly blocking nicotinic acetylcholine receptor channel. [

Objective To analyze current status of research on pulmonary embolism and changes of its knowledge in domestic academic literatures.Methods Totally,2319 domestic papers on pulmonary embolism were collected by computerized retrieval from CHKD system during the period of 1994 to 2006 with a key word of"pulmonary embolism",and were classified and summarized according to their type,contents,author's affiliation.Results Number of papers on pulmonary embolism increased quickly in recent 13 years,especially in the last five years,from 25 papers in 1994 to 430 in 2006.Most of the papers in the early stage were case reports,and the number and proportion of original articles increased obviously after 1997.Contents of the papers were mainly about clinical manifestation and examinations of pulmonary embolism,but papers on its auxiliary examinations,laboratory examinations,clinical nursing care,animal experiments,and so on were all increased.Authors of the papers were from varied departments of hospitals,mainly in the department of internal medicine,especially in the departments of cardiology and respiratory diseases,followed by the divisions of medical imaging,radiation and nuclear medicine.Papers were mainly submitted by authors from affiliated hospitals of medical schools and hospitals at city-level,and papers submitted by gross-roots hospitals such as county hospital and clinic also increased.Conclusion Significant success in diagnosis and treatment of pulmonary embolism has been achieved domestically in recent 13 years,which has been recognized popularly by Chinese physicians.

Objective To investigate the security characteristics of rural young boarding pupils and its influencing factors.Methods 210 boarding and 265 non-boarding rural young pupils of Huojia in Henan were tested by questionnaires,including of a self-developed questionnaire,security questionnaire and adolescent mental resilience scale.Results ①The scores of the interpersonal security (25.99 ± 5.53),the determine control sense factor (24.63 ±6.17) and the total security(50.62 ± 10.37) in the boarding pupils were statistically lower than non-boarding pupils (27.36 ± 6.38,26.00 ± 6.55,53.36 ± 11.77,P ＜0.05).②There were statistically significant difference in the scores of the interpersonal security,the determine control sense factor and the total security among the different grades(P＜0.05),but there were no statistically sex difference in the scores(P ＞ 0.05).③Group regression analysis showed that,no family factors in the young boarding pupils had influence on the score of the security sense factors and the total (P＞0.05),and marital relationship of parents,only child,father' s and mother(')s education background of non-boarding pupils had certain influence on the score of the interpersonal security,the determine control sense factor and the total security (β =-0.43-0.27,P＜ 0.05).④The group regression analysis showed that,the problem solving and self-efficacy,parents'high expectations in mental toughness respectively had some effect on the interpersonal security of boarding and non-boarding pupils(β =-0.15,β =0.25,P＜0.05),and social ability and family care,schools resilience respectively had influence on the determine control sense in boarding and non-boarding pupils (β =-2.91-2.87,P＜0.05),and social ability,parents'high expectations respectively had influence on the total security in boarding and non-boarding pupils (β =-0.17,β=0.22,P＜0.05).Conclusion The security-sense in boarding young pupils are lower than the non-boarding young pupils,and family factors and mental toughness have different effects on security-sense of two kinds pupils.

OBJECTIVE: To study the effect of total flavonoids from Alpinia officinarum on gastrointestinal motility.METHODS: Gastric emptying method was applied to observe the effect of total flavonoids from A.officinarum on gastric emptying of normal mice and sthenic gastric emptying induced by pyridostigmine bromide.Effect of total flavonoids from A.officinarum on gastric smooth muscle of rats was observed through in vitro test and small intestine advancement was used to observe the influence of total flavonoids from A.officinarum on intestinal motility.RESULTS: Total flavonoids from A.officinarum had no significant influence on gastric emptying of normal mice,but distinctly inhibited sthenic gastric emptying induced by pyridostigmine bromide(P

The laboratory animal science, a comprehensive discipline researching on experimental animal and animal experimentation, is the life sciences research foundation and the support condition. It has very vital significance to sudy the related discipline especially the life sciences. This article discusses the construction of the status of Laboratory Animal Science course combined with the development of laboratory animal science and contacted with the characteristics of medical colleges and related disciplines.