Efficacy of group cognitive behavioral therapy for socially dysfunctional behavior in patients with major depressive disorder / 中华行为医学与脑科学杂志

Objective To explore the efficacy of group cognitive behavioral therapy for improving depressive symptoms and social functional in patients with major depressive disorder.Methods A total of 160 patients with major depressive disorder were randomly divided into intervention group (n=80) and control group (n=80).Intervention group was treated with conventional antidepressants combined with group cognitive behavioral therapy.Control group was treated with one conventional antidepressants.All participants were assessed with Hamilton Depression Scale (HAMD)and Scale of Social function of Psychosis Inpatients (SSFPI) before and 8 weeks after the treatment.Results After 8 weeks treatment,the scores of HAMD (14.76±9.48) was significantly reduced and the scores of SSFPI(30.09±4.34) were significantly increased in intervention group compared with the baseline ((37.91± 10.58),(12.40±2.56),all P＜0.01).The scores of HAMD were significantly lower and the scores of SSFPI were significantly higher in intervention group than that in control group((20.71±7.85),(22.63±3.63),all P＜0.01).Conclusion Group cognitive behavioral therapy is effective for major depressive disorder patients by reducing depressive symptom and improving social function.

Screening of Antioxidant Active Components of Schisandra chinensis / 中国药房

OBJECTIVE:To screen antioxidant active components of Schisandra chinensis. METHODS:The orthogonal test was adopted to optimize extraction technology using DPPH free radical scavenging activity(IC50)as index and ethanol volume frac-tion,material-liquid ratio and extraction time as factors,and the verification test were made. The fractions(SC-0,SC-10,SC-30, SC-50,SC-70,SC-95) were made by extracting and purifying S. chinensis with macroporous resin with water and 10%,30%, 50%,70%and 95%ethanol. With IC50 and total antioxidant capacity(determined by ABTS method)as indexes(vitamin C as pos-itive control),the antioxidant active components of S. chinensis were optimized. The contents of 5 kinds of lignan in different posi-tions of S. chinensis were determined by HPLC. RESULTS:The optimal extraction condition of S. chinensis was as follows as 60% ethanol,material-liquid ratio of 1∶14,extracting for 2.0 h. The average IC50 of DPPH free radical scavenging activity was 23.81 mg/ml(RSD=0.52%,n=3)in verification test. SC-0 did not have antioxidant abilities. DPPH free radical scavenging activi-ty of those components (ie. the IC50 value from low to high) were in the following order of positive control>SC-50>SC-30>SC-95>SC-70>SC-10;total antioxidant ability of them were in the following order of SC-50>positive control>SC-30>SC-70>SC-95>SC-10;the contents of 5 types of lignan in different components were in the following order of SC-70>SC-50>SC-95>SC-30. CONCLUSIONS:The antioxidant active component of S. chinensis is 50%ethanol eluate.

Screening of Decolorizing Agents for the Extracts from the Fruit and Stem of Schisandra chinensis / 中国药房

OBJECTIVE:To screen decolorizing agents suitable for the extracts from the fruit and stem of Schisandra chinen-sis. METHODS:HPLC was adopted to determine the contents of 4 kinds of lignans(schizandrin,schisandrol B,deoxyschizandrin and γ-schizandrin) in the extract solution from the fruit and stem of S. chinensis which was treated with 8 kinds of decolorizing agents (activated clay,activated carbon,diatomite,calcium bentonite,kaolin,activated aluminium oxide,magnesium oxide,at-tapulgite clay),and the decolourization rates of the samples of the fruit and stem of S. chinensis and the retention rates of lignans in such samples were calculated respectively. RESULTS:The above-mentioned decolorizing agents were arranged in order as fol-lows respectively based on the decolourization effects on the extract solution from the fruit and stem of S. chinensis:attapulgite clay>activated carbon>activated aluminium oxide>kaolin>magnesium oxide>diatomite>calcium bentonite>activated clay,and activated carbon>diatomite>attapulgite clay>magnesium oxide>kaolin>activated aluminium oxide>activated clay>calcium ben-tonite. The attapulgite clay and activated carbon have the best decolourization effects on the extracts from the fruit and stem of S. chinensis,with the decolourization rates of 60.47% and 69.24% respectively,and the retention rates of schizandrin,schisandrol B,deoxyschizandrin and γ-schizandrin were 77.43%,77.73%,77.07%,77.53%,and 72.18%,70.17%,70.32%,70.28%,re-spectively. CONCLUSIONS:Among the 8 decolorizing agents,attapulgite clay and activated carbon have the best decolourization effects on the extract solution from the fruit and stem of S. chinensis.

Effect of light intensity on growth and quality of Asarum heterotropoides var. mandshuricum / 中国中药杂志

To study the infection rate of leaf spot disease, the drying rate of root and volatile oil content of Asarum heterotropoides var. mandshuricum at the unwrapping stage, blooming stage, the initial fruit stage, fructescence and wither stage during the growth period under the different sunlight intensity of 100% (I), 50% (II), 28% (III), 12% (IV). The volatile oil content was measured according to the method of Chinese Pharmacopoeia and the oil composition was determined by GC-MS. The unwrapping stage, blooming stage and the early fruit stage postponed about 2 days with decrease of the sunlight intensity. The infection rate of leaf was 88.46%, 70.00%, 0.23%, 0.07% under light intensity of I, II, III and IV, respectively, the drying rate was 25.14%, 28.27%, 30.23%, 31.57% under light intensity of I, II, III and IV, respectively, and the volatile oil content was 18.1, 17.6, 16.3, 15.3 mL x kg(-1) under light intensity of I, II, III and IV, respectively. The composition of the oil determined by GC-MS was different between the groups, but the content did not changed significantly with the decrease of the light intensity.

Screening of plant pathogenic fungi by ginsenoside compound K production / 中国中药杂志

<p><b>OBJECTIVE</b>To screen a new strain which can transform panaxadiol saponins into the rare ginsenoside compound K.</p><p><b>METHOD</b>The total saponins in stems and leaves of Panax notoginseng was used as a substrate in the liquid state fermentation process, and the results were detected by TLC and HPLC-ELSD to screen a strain from twelve plant pathogenic fungi which can produce ginsenoside compound K.</p><p><b>RESULT</b>Fusarium moniliforme was found to transform the total saponins to ginsenoside compound K efficiently in the all twelve fungal strains. In the fermentation process, ginsenoside Rb1 was transformed almost completely, and the content of ginsenoside Rd was decreasing evidently.</p><p><b>CONCLUSION</b>F. moniliforme is selected as a new high-yield strain. It is expected to be used to produce the high activity infrequent ginsenoside compound K and to improve the content of active principles in medicinal plants.</p>

Effect of chronic intermittent hypobaric hypoxia on reactivity of adrenergic receptors in rabbit sino-atrial node / 中国病理生理杂志

AIM: To investigate the effect of chronic intermittent hypobaric hypoxia (CIHH) on the activity of adrenergic receptor(AR) in rabbit sino-atrial node (SAN) by intracellular recording.METHODS: New Zealand rabbits were randomly divided into three groups: control group (Con), 14 d CIHH treatment group (CIHH14) and 28 d CIHH treatment group (CIHH28). The CIHH rabbits were exposed to a simulated 5 000 m (oxygen 11.1%) hypobaric hypoxia in hypoxic chamber for 14 d or 28 d (6 h/d), respectively. SAN preparation was used and the transmembrane action potential was recorded by micropipettes. Isoproterenol hydrochloride (ISO, agonist of β-AR) and phenylephrine (PE, agonist of α_1-AR) at different concentrations (0.01, 0.1 and 1 μmol/L) were applied cumulatively to investigate the electrophysiological effect of the drugs on the rabbit SAN among Con, CIHH14 and CIHH28 groups, respectively. RESULTS: (1) CIHH didnt change the parameters of action potential of SAN recorded under basic condition. (2) ISO changed some parameters of AP significantly in a dose-dependent manner, including increases in the amplitude of AP (APA), maximal rate of depolarization (V_(max)), the velocity of diastolic (phase 4) depolarization (VDD), and rate of pacemaker firing (RPF). (3) The response of AP to ISO in CIHH rabbits was decreased significantly compared to that in Con animals. Under 1 μmol/L of ISO, the increases in VDD, RPF, APA and V_(max) in CIHH animals were smaller than those in Con animals (P<0.05). (4) No effect of PE (0.01, 0.1 and 1 μmol/L) on the parameters of action potential was observed. CONCLUSION: CIHH decreases the reactivity of β-AR, but has no effect on α_1-AR in SAN of rabbit.

ATP-sensitive potassium channel and mitochondrial permeability transition pore involve in cardioprotection of polydatin / 中国药理学与毒理学杂志

AIM To investigate the protective effect of polydatin on ischemia-reperfusion (I-R) injury in cardiac muscle and the possible mechanism. METHODS Langendorff technique was used to make I-R injury in rats. Male Sprague-Dawley rats were randomly divided into control, model, polydatin(25, 50 and 75 μmol·L-1), glibenclamide(Gli, 10 μmol·L-1)+polydatin(50 μmol·L-1), 5-hydroxydecanoate(5-HD, 100 μmol·L-1)+polydatin(50 μmol·L-1), and atractyloside (Atr, 20 μmol·L-1)+polydatin(50 μmol·L-1) groups. The hearts in control group were perfused with K-H solution for 110 min. Model group hearts were subjected to 30 min no-flow global ischemia followed by 60 min of reperfusion. The hearts in 3 polydatin groups were perfused with K-H solution containing different concentrations of polydatin for 10 min before I-R. The hearts in Gli+polydatin and 5-HD+polydatin groups were perfused with K-H solution containing Gli or 5-HD for 5 min firstly, then perfused with K-H solution containing both polydatin and Gli or 5-HD for 10 min before I-R. The hearts in Atr+polydatin group were perfused with K-H solution containing polydatin for 10 min before I-R and perfused with K-H solution containing Atr for 15 min after I-R. The cardiac function, including left ventricular end-diastolic pressure (LVEDP), left ventricular developed pressure (LVDP), the maximal rates of rise and decline of left ventricular pressure (±dp/dtmax), and coronary flow (CF), were recorded before, after 30 min no-flow global ischemia and, during 60 min reperfusion. Myocardial infarct size was assessed using 2, 3, 5-triphenyltetrazolium chloride method and myocardial ultrastructure was observed via transmission electron microscope after 60 min reperfusion. RESULTS There were no significant differences in cardiac functional parameters between control and model groups in pre-ischemia condition. Compared with model group, polydatin promoted a better recovery of cardiac function after I-R in a concentration-dependent manner. After 60 min of reperfusion, the values of LVDP, ±dp/dtmax and CF in polydatin groups were much higher, but LVEDP was lower than those in model group. Polydatin (50 μmol·L-1) also significantly reduced myocardial infarct size and relieved the I-R injury of myocardial ultrastructure. The protective effects of polydatin (50 μmol·L-1) on LVDP, LVEDP, ±dp/dtmax and CF, as well as the inhibitory effect on infarct size after I-R were abolished by Gli, 5-HD and Atr. CONCLUSION Polydatin has protective effect against I-R injury in rat hearts, which may be related with the opening of ATP-sensitive potassium channel located in both cell membrane and mitochondrial membrane, as well as inhibition of mitochondrial permeability transition pore opening.