ObjectiveTo study the symptom dimensions of obsessive-compulsive disorder(OCD) of Chinese patients.MethodsThis study examined apriori categories used to group types of obsessions and compulsions in the Yale-Brown Obsessive Compulsive Scale symptom checklist,in a group of Chinese patients with OCD ( n=536).A principal-components factor analysis with a varimax rotation was performed.ResultsFive factors( explaining)-hoarding( 16.17％ ),contamination/cleaning ( 13.65％ ),symmetry/ordering( 12.82％ ),aggressive/checking( 10.44％ ),somatic/repeating(8.38％ )-emerged in this analysis,in total accounting for more than 60％ of the variance.ConclusionThe result suggests a multidimensional model of Chinese OCD patients and these five factors may be helpful in identifing the subtype of OCD.

Objective To observe the effects of sleep deprivation(SD)on learning and memory and phos-phorylated cyclic AMP responsive element binding protein(pCREB) expression in hippocampus of mice,and to explore the mechanism of cognitive change after SD. Methods Twenty female C57BL/6J mice were randomly divided into sleep deprivation group(SD, n = 10) and normal cage control group (CC,n = 10). Touch method was used to establish the sleep deprivation model. 30 days after SD,all the animals were subjected for Morris Water Maze (MWM) to test mean escape latency and percentage of time spent in the target quadrant. pCREB level in hippocampus was tested with Western blot. Results The mean escape latency in SD group in the second and third day of MWM was (29.31 ±4.93) s and (25.33 ±5.06)s, respectively, and was longer than that in CC group ((26.05 ±5.96)s and (19.35 ±7. 85)s,respectively). Mice in SD group spent less time in the target quadrant than that in CC group((23.61 ±9.86)% and (37.46 ±7. 51)%,.respectively, P<0.05). Results of Western blot for pCREB revealed that the pCREB level in hippocampus in sleep deprivation group was significantly lower than that in control group(0.71 ±0.03 and 0.82 ±0.06, respectively, P<0.01) . Conclusion The impairment of spatial learning and memory ability in sleep deprivation animals may be associated with the reduction of pCREB in hippocampus.

A total of 185 hospitalized patients with chronic obstructive pulmonary disease (COPD) were recruited.And the questionnaire of COPD Assessment Test (CAT) was used to evaluate the CAT scores and Hamihon Depression Scale to evaluate HAMD scores.Lung function,body mass index,smoking and medication were measured and recorded in details.According to the HAMD scores,65 cases had depression and 120 cases no depression.Comparing with the no-depression group,the results show that HAMD and CAT scores were higher significantly in the depression group and there was a lower proportion of long-term domiciliary oxygen therapy.According to the logistic regression analysis,the CAT scores were associated with global initiative for chronic obstructive lung disease (GOLD) stages Ⅳ and HAMD scores.These results suggest that poor lung function and depression affect greatly the quality of life for stable COPD patients.

Based upon the measure of depression as defined by Hamilton depression scale (HAMD)scores ＞ 17,120 patients with chronic obstructive pulmonary disease (COPD) were classified into 2 groups:COPD patients with or without depression.According to the mini-mental state examination (MMSE),the cognitive functions of all patients were evaluated.Meanwhile,oxygen saturation and pulmonary function were measured by blood gas analyzer and spirometer respectively.Fifty-four COPD patients were complicated with depression.HAMD scores were significantly negatively correlated with oxygen saturation and pulmonary function (P ＜0.05).Multiple regression analysis revealed that gender,oxygen saturation and MMSE scores were risk factors of depression (P ＜ 0.05).MMSE scores decreased more obviously in the COPD patients with depression and were positively correlated with oxygen saturation (P ＜ 0.01).A negative correlation existed between MMSE scores and HAMD scores (r =-0.549,P ＜ 0.05).

Objective To investigate the influences of depression on exercise capacity of patients with chronic obstructive pulmonary disease (COPD) in 6-minute walk test (6MWT).Methods One hundred and twenty COPD patients,whose acute exacerbation was controlled,were enrolled in the study from September 2009 to April 2011.According to Hamilton depression scale (HAMD) scores,48 patients with HAMD scores ＜ 7 were classified as non-depression group (control),60 patients with HAMD scores ≥17 were classified as depression group,patients with 7 ≤ HAMD scores ＜ 17 were classified as uncertain depression and not included in the experiment.Six-minute walk testing was performed in patients.Blood pressure,heart rates,respiratory rates,Borg scores were measured before and after 6MWT; body mass index and lung function were also measured in all patients.Results The distances of walk in the depression group and control group were (259 ±91) and (312 ±71) meters,respectively (P ＜0.05).Heart rates,svstolic blood pressure,respiratory rates and Borg index in depression group after testing were (108± 11)/min,(148.7 ± 15.4) mm Hg(1 mm Hg =0.133 kPa),(23.3 ±3.9) /min and (4.65 ± 1.67),respectively;those for control group were (95 ±9) /min,(141.8±8.9) mm Hg,(20.2 ±3.7) /min and (2.59±1.52),respectively.There were significant differences between two groups (all P ＜ 0.05).Conclusions Depression may affect the exercise capacity of COPD patients,the psychological status of the patients should be under consideration when conventional treatment is taken.

Objective To observe the effect of malnutrition on cognitive function of patients with chronic obstructive pulmonary disease(COPD) in stable period.Methods According to score of Mini Nutritional Assessment (MNA) ＞ 17 points and ≤ 17 points,120 patients with stable COPD were divided into control group and malnutrition group.The mini-mental stat examination (MMSE) was used to detect the cognitive function of patients,and oxygen saturation,pulmonary function,serum NSE and S-100β were detected as well.Results Compared with the control group,the disease course of the malnutrition group was longer,and measured value to expected value of the first second forced expiratory volume (FEV1) and blood oxygen saturation were significantly lower,but there were no significant differences in the age and education level between the two groups (P ＞ 0.05).There were significant differences in total score,directive force,delayed memory,attention and calculating ability,recollection ability,language between two groups (P ＜ 0.05).Multiple Logistic regression analysis showed that the MMSE score was mainly related to age,education,measured value to expected value of FEV1,blood oxygen saturation,and MNA score.Both NSE and S-100β protein were negatively correlated with MMSE score (r =-0.365、-0.441,P ＜ 0.05).Conclusion Malnutrition can aggravate the cognitive impairment of COPD patients in stable stage.Serum S-100β and NSE levels may be used as predictors for cognitive impairment in COPD patients with malnutrition.

Objective To observe the effect of malnutrition on cognitive function of patients with chronic obstructive pulmonary disease(COPD) in stable period.Methods According to score of Mini Nutritional Assessment (MNA) ＞ 17 points and ≤ 17 points,120 patients with stable COPD were divided into control group and malnutrition group.The mini-mental stat examination (MMSE) was used to detect the cognitive function of patients,and oxygen saturation,pulmonary function,serum NSE and S-100β were detected as well.Results Compared with the control group,the disease course of the malnutrition group was longer,and measured value to expected value of the first second forced expiratory volume (FEV1) and blood oxygen saturation were significantly lower,but there were no significant differences in the age and education level between the two groups (P ＞ 0.05).There were significant differences in total score,directive force,delayed memory,attention and calculating ability,recollection ability,language between two groups (P ＜ 0.05).Multiple Logistic regression analysis showed that the MMSE score was mainly related to age,education,measured value to expected value of FEV1,blood oxygen saturation,and MNA score.Both NSE and S-100β protein were negatively correlated with MMSE score (r =-0.365、-0.441,P ＜ 0.05).Conclusion Malnutrition can aggravate the cognitive impairment of COPD patients in stable stage.Serum S-100β and NSE levels may be used as predictors for cognitive impairment in COPD patients with malnutrition.