Objective: To study the effect of intraperitoneal injection anesthesia and endotracheal anesthesia during creating a rat model of middle cerebral artery occlusion (MCAO). Methods: Rats were anesthetized and maintained respectively with chloral hydrate by intraperitoneal injection and inbreathing 2% halothane and 30% O2 via tracheal intubation. MCAO model was created by method of Zea Longa. The time of induction, maintenance, recovery and physiological indexes were monitored, and the result of blood gas analyses, blood glucose, brain temperatures, rectal temperatures, neurological deficit, 48 hours' survival rate and the volume of brain infarction were also studied. Results: Intraperitoneal injection anesthesia inhibited the respiration significantly. Blood gas analysis indicated serious respiratory acidosis (pH 7.29 ± 0.03, PCO2 56.8 ± 4.2 mm Hg, PO2 119.1 ± 15.6 mm Hg). But it appeared approximately normal in rats with halothane anesthesia (pH 7.48 ± 0.06, PCO2 36.2 ± 0.3 mm Hg, PO2 219.1 ± 27.4 mm Hg). There was significant difference between two kinds of anesthesia in pH, PCO2, PO2 (all P < 0.01). Anesthesia with chloral hydrate by intraperitoneal injection can reduce brain and rectal temperature significantly (cerebral cortex in ischemia area 33.3 ± 0.8 °C, striatum 33.6 ± 0.3 °C, rectum 34.7 ± 0.5 °C), However, endotracheal anesthesia affected little on brain and rectal temperature (cerebral cortex in ischemia area 35.1 ± 0.39 °C, striatum 36.2 ± 0.3 °C, rectum 35.1 ± 0.3 °C). There were significant difference between two kinds of anesthesia in brain temperature (P < 0.01), but in rectal temperature they had not significant difference (P > 0.05). There was no significant difference of survival rate at 48 hours and brain infract volume between the two kinds of anesthesia (P > 0.05). Conclusion: This study suggestes that endotracheal anesthesia with 2% halothane and 30% O2 is better than intraperitoneal injection of chloral hydrate. It is effective and less influence on the brain temperature and other relative indexes during creating middle cerebral artery ocelusion rat model.

It has become a vital question to find out the approaches of stomatological course system to meet the demands of modern times.By analyzing the characteristics of stomatological courses systems at home and abroad, the author found out the differences,which was helpful the to optimize the courses system of stomatology education.

The paper summed up the experiences of course system reform and set forth how to optimize the course system of stomatology education to cultivate the practical abilities of stomatology undergraduates intensively.

Objective To investigate factors influencing the quality of life (QOL) of cancer patients with bone metastases. Methods Eighty-two cancer patients with hone metastasis were investigated.A questionnaire designed according to European Organization for Treatment of Cancer quality of life questionnaire ( EORTC QLQ-C30),Monroe Dunaway Anderson symptom inventory-Chinese edition (MADSI-C) and hospital anxiety and depression scale (HADS) standards was used to collect the information. Results The average total standardized QOL score of these cancer patients was 53.28±19.20.Among the function subscales,social function got the lowest average score (47.54),while among the symptom subscales fatigue got the highest average score (56.65).According to the MDASI-C,the most serious symptom burdens were fatigue,distress and pain; working and walking experienced the most interference.The symptom burdens correlated significantly with the QOL results.Twenty-four of the patients (29.3％) had been diagnosed with anxiety,and 17 (20.7％) were diagnosed with depression.Anxiety and depression continued to be significantly associated with overall QOL and its various dimensions. Conclusions The results　show that the burden of fatigue and pain,as well as of anxiety and depression are significantly associated with impaired QOL among cancer patients with bone metastasis.Work (housework) and walking were the most severely affected activities.Psychological rehabilitation should be focused on the comprehensive treatment of patients with bone　metastasis along with other appropriate rehabilitation strategies to enhance their overall functioning,relieve their　symptoms and improve their QOL.

Objective To investigate the expression of Fas/FasL in children with aplastic anemia(AA) and its clinical significance.To explore the pathogenesis of AA.Methods CD34+ cell counts and the expression of Fas/FasL in 12 children with severe AA(SAA),18 with chronic AA(CAA)and 10 normal children were detected by flow cytometry combining monocolon antibody.Results The expression of Fas in children with AA were significantly higher than that in control group(P0.05).Conclusions Fas/FasL systeam take part in inducing CD34+ cell apoptosis.This may contribute to understanding the decrease number of stem cells and bone marrow failure.

Objective To investigate the relationship between diabetes and bone metabolism and the potential epigenetic mechanisms. Methods BMSCs were cultured for 7 and 15 days in cell culture medium with different concentrations of glucose. The mRNA and protein expression of HDACs and osteogenesis-related genes were detected by RT-PCR and Western blot assay ,respectively. Moreover ,the combination of HDAC to the promoter region of Runx2 was tested by the chromatin immunoprecipitation (ChIP) assay. Results ThemRNA expression of osteogenesis-related genes ,incuding OCN(P < 0.05)and Col1(P < 0.05),in the bone marrow of diabetic mice was significantly reduced compared with the control mice. The mRNA and protein expression of ALP ,OCN ,Runx2 and OSX was gradually reduced with the increasing concentration of glucose ,while HDAC2 mRNA and protein expression was increased. The binding activity of HDAC2 to the upstream and downstream of Runx2 promoter region in 25mM glucose-treated BMSCs was higher than the control group(P < 0.05). Conclusoins Diabetes might repress osteogenesis of BMSCs via inhibiting the activity of Runx2 through upregu-lating the expression of HDAC2.

Abstract: Malaria, an infectious disease caused by Plasmodium infection, is one of the most important public health problems worldwide. Artemisinin-based combination therapies (ACTs) are recommended by WHO as the first-line treatment for uncomplicated P. falciparum malaria in malaria-endemic areas. The application of artemisinin and its derivatives has played an integral role in reducing the global incidence of malaria. However, in recent years, the emergence and spread of artemisinin resistance has brought great challenges to global malaria control and elimination. At present, the mutation of K13 gene on chromosome 13 of Plasmodium falciparum is most closely related to artemisinin resistance, but in recent years, studies have shown that K13 cannot explain all artemisinin resistance. This article reviews the recent research progress in the field of artemisinin resistance in Plasmodium falciparum, including definition of artemisinin resistance, detection methods and molecular markers related to resistance. In addition, some of the issues discussed in this review remain controversial and require further study.

Objective To study the correlation between blood glucose variability and TOAST type of patients with acute ischemic stroke and provide new evidence which can improve the prognosis of ischemic stroke.Methods One hundred and forty-three hospitalized patients with acute ischemic stroke from August 2013 to August 2014 were included.All patients were estimated about the general state of health and performed laboratory examinations and other auxiliary examinations.Then the TOAST type of all cases was classified.The 24-hour blood glucose monitoring was done to the patients to calculate the blood glucose variability.One hundred and forty-three cases were divided into blood glucose variability group ( standard deviation of glucose ( GluSD )≥1.4 mmol/L, 85 cases ) and control group ( GluSD <1.4 mmol/L, 58 cases) according to glucose variability.We estimated the neurologic impairment of the patients with the US National Institutes of Health Stroke Scale ( NIHSS) and the activities of daily living with Barthel index.The relation between blood glucose variability and the prognosis of ischemic stroke was analysed with multivariate analysis.Results Differences were significant in age, history of diabetes and NIHSS score between blood glucose variability group and control group.The degree of neurologic impairment of large artery atherosclerosis (LAA) group (moderate and severe neurologic impairment:43/53(81.0%)) and cardio-aortic embolism ( CE) group ( moderate and severe neurologic impairment:15/17 ) was more serious than that in small artery occlusion ( SAO) group ( moderate and severe neurologic impairment:6/71 ( 8.5%) ) , especially in CE group.The differences were significant (χ2 =7.043,P<0.05).Blood glucose variability in patients with LAA was more obviously than that in other patients.NIHSS score and activities of daily living of the patients estimated on admission and after 2 weeks were not different in the blood glucose variability group, but the difference was significant in control group.The poor prognosis in blood glucose variability group was 2.821 times that in control group ( 95% CI 1.880 -4.233 ).Conclusions The people sufferd ischemic stroke with old age, diabetes or severe case are more vulnerable to abnormal blood glucose variability.Abnormal blood glucose variability is an independent risk factor for acute ischemic stroke and induces difficulty to recovery and poor prognosis.

Objective:To study the differences of ventilation function in patients between chronic right heart failure secondary to pulmonary arterial hypertension and chronic whole heart failure secondary to left heart diseases.
Methods:A total of 102 patients with clinical stable chronic heart failure (CHF) were studied. The patients were divided into 2 groups:Whole heart failure (WHF) group, n=41 and Right heart failure (RHF) group, n=61. The ventilation function test at rest and cardiopulmonary exercise test (CPX) were conducted and compared between 2 groups.
Results: The rest ventilation function was similar between 2 groups. For CPX examination, compared with WHF group, RHF group had the lower peak minute ventilation (VE), higher anaerobic threshold and peak minute ventilation/CO2 production (VE/VCO2), higher peak dead space volume/tidal volume (VD/VT), all P<0.05.
Conclusion:At exercise condition, RHF patients had decreased ventilation function and ventilation index due to severe abnormality of ventilation/perfusion (V/Q).

OBJECTIVETo elucidate the regulatory bio-mechanism of estrogen and local stress on the bone remodeling activities in vivo.

METHODSA Wistar rat experimental model was established to apply orthodontic activation during different stages of estrous cycle. In situ hybridization was used to detect the variation of the insulin-like growth factors (IGF) mRNA expression in the periodontal tissues. The data of each group was analyzed with SPSS 11.0 software package for Student-Newman-Keuls (S-N-K) test and one way ANOVA test.

RESULTSBoth IGF-I mRNA and IGF-II mRNA level expressed in the periodontal tissues were increased by orthodontic activation during various stages of the estrous cycle. But a similar pattern emerged that the IGF-I mRNA level was the lowest in the estrous stage, whereas its level was the highest in the proestrus stage (P < 0.05). No rhythm of IGF-II mRNA expression found during the estrous cycle.

CONCLUSIONIt was concluded that local mechanical stimulation directly enhanced the IGF expression. In contrast to the IGF-II, IGF-I was also influenced by the sex hormone rhythm during the estrous cycle.

Animals ; Estrous Cycle ; Estrus ; Female ; In Situ Hybridization ; Insulin-Like Growth Factor I ; RNA, Messenger ; Rats ; Rats, Wistar ; Somatomedins ; Tooth Movement Techniques