Objective　To set up an experimental animal model of head injury of deceleration. 　Methods　The decelerating head injury was produced in r abbits by utilizing an impactor consisting of a rotor, elastic strips, a platfor m and a revolving board. Sixty-nine rabbits were used in this experiment: 33 ra bbits were for pre-experiment to establish the correlation of impact force and brain damage, 36 rabbits were divided into a control group (n=12), a mild injur y group (n=12) and a severe injury group (n=12) to elucidate the pathophysiologi cal changes after head injury at different injury levels. 　Results　The physiological responses after impact were observe d in all traumatic animals, which showed a sudden rise or reduction of blood pre ssure, deep and fast breath and apnea, and pain reflects inhibition, etc. The re s ponses were more obvious in the severe injury group than in the mild injury grou p. The water content of the brain increased 6 h after injury and the intracrania l pressure went up 1- 6 h after injury in the severe injury group. The patholog ical lesions were noted at or above the impact force level of (800±50) N. At th e severe injury level of (1 100±100) N,there were almost all kinds of lesions, such as skull fracture, brain contusion ( coup injury and contre-coup injury),b rain stem injury and subdural hematoma. When the impact force rose to or over (1 400±150) N,the animals died of persistent apnea mostly. 　Conclusions　A new practical and simple model of head injury of deceleration in rabbits has been developed with several features similar to t he experience in the clinical setting. This model with the same biomechanical me chanism as the clinical head injury of deceleration is quite useful for further study of the pathophysiological mechanisms of head injury, safe measure of abati ng head injury and investigating the effective therapeutic method for severe hea d injuries.

Objective To observe the influence of emotional intervention on alcohol-induced mental disor-ders patients and provide guidance for health intervention.Methods 118 patients with alcohol -induced mental disorders were divided into emotional intervention group and conventional intervention group.After 4 weeks,the effect was evaluated by anxiety,depression,SDSS,BPRS,SCL-90.Results After 4 weeks intervention,the lost rate of follow up in the emotional intervention group was 3.57%,which in the conventional intervention group was 8.06%.In the emotional intervention group, the differential values before and after intervention of anxiety, depression, BPRS, SDSS,somatization,compulsion,interpersonal relationship sensitivity,depression dimension,anxiety dimension,rivalry, consternation,crankiness and spirit were (19.90 ±3.18),(23.02 ±4.26),(15.46 ±3.29),(1.89 ±0.91), (0.48 ±0.24),(0.29 ±0.22),(0.30 ±0.24),(0.26 ±0.24),(0.31 ±0.19),(0.16 ±0.17),(0.32 ±0.20), (0.36 ±0.29),(0.35 ±0.25) respectively.Compared with the conventional intervention group,the differential values were higher than conventional intervention group [(8.27 ±1.72),(12.31 ±2.64),(11.69 ±4.17), (1.52 ±0.84),(0.25 ±0.17),(0.12 ±0.14),(0.19 ±0.18),(0.18 ±0.16),(0.15 ±0.13),(0.09 ±0.07), (0.11 ±0.12),(0.17 ±0.14),(0.16 ±0.15)].There were significant differences between the two groups (anxiety:t=4.159,P=0.000;depression:t=16.013,P=0.000;BPRS:t=5.269,P=0.000;SDSS:t=2.227,P=0.028;somatization:t=5.851,P=0.000;compulsion:t=4.883,P=0.000;interpersonal relationship sensitivity:t=2.741,P=0.001;depression:t=2.076,P=0.004;anxiety:t=5.202,P=0.000;rivalry:t=2.864,P=0.005;consternation:t=6.749,P=0.000;crankiness:t=4.432,P=0.000;spirit:t =4.885,P=0.000).Conclusion Emotional intervention has positive effect on emotional states,somatic symptoms and quality of life,it is worthy of clin-ical promotion.

Objective To explore the effect of rehabilitation training combined with rational-emotive therapy on post-stroke depression (PSD).Methods 51 PSD patients were randomly divided into the treatment group (n=25) and control group (n=26). All patients received routine rehabilitation training, simultaneously took 20 mg of fluoxetine hydrochloride dispersible tablets per day. Based on above, the treatment group was given physiological rehabilitation treatment with rational-emotive therapy in early stage, 30 min each time, continuously 6 weeks. The two groups were assessed with Zung Self-rating Depression Scale and Fugl-Meyer Motor Scale before and after treatment.Results Afer treatment, the scoers of Zung Self-rating Depression Scale and Fugl-Meyer Motor Scale of the treatment group was higher than that of the control group ( P<0.05).Conclusion The rational-emotive therapy might improve the depression condition of post-stroke, enhance patients' motor function.

Objective:To obtain eukaryotic expressing protein of chicken interferon ? (ChIFN-?) and research its anti-virus activity.Methods: Chicken interferon ? mature protein gene was cloned and amplified by reverse transcripition-polymerase chain reaction(RT-PCR) from the total mRNA in the lymphocyte of chicken blood stimulated with ConA for 4～10 hours.The gene was inserted into the expression vector pPICZa-A,which had been cleaved by EcoR I and Xba I.The recombinant vector was linearized by Sac I and transferred into yeast Pichia pastoris,strain X33,anti-virus activity of the recombinant cytokine was detected by the classical experiment cell pathological effect inhibition assay.Results:The result showed that the preparation of recombinant interferon had higher anti-virus activity(10?48 U/ml).Conclusion: The recombinant chicken interferon ? with anti-virus bioactivity has been obtained.

Objective To observe the effect of early occupational therapy intervention on unilateral spatial neglect caused by stroke.Methods A total of 92 patients with unilateral spatial neglect caused by stroke were ran- domly divided into a treatment group(46 cases)and a control group(46 cases).The cases of the control group were treated by routine clinical treatment plus positioning on the bed,passive joint motion,bridging movement,facilitation techniques,balance training in sitting and standing positions,gait training immediately after the patients' conditions got stable.The patients in the treatment group were treated with activities of daily living(ADL)training in addition to the interventions employed in the control group.Results Effect of the treatment group are superior to that of the control group as reflected by the scores with Fug1-Meyer scale and Barthel Index(P

OBJECTIVETo explore changes of neuronal calcium channel following brain damage induced by injection of pertussis bacilli in rats, and to investigate the relationship between cytosolic free calcium concentration ([Ca(2+)](i)) in the synaptosome and Ca(2+)-ATPase activities of mitochondria.

METHODSThe level of [Ca(2+)](i) in the synaptosome and Ca(2+)-ATPase activities of mitochondria in the acute brain damage induced by injection of pertussis bacilli (PB) in rat was determined and nimodipine was administrated to show its effects on [Ca(2+)](i) in the synaptosome and on alteration of Ca(2+)-ATPase activity in the mitochondria. Seventy-three rats were randomly divided into four groups, ie, normal control group (Group A), sham-operation control group (Group B), PB group (Group C) and nimodipine treatment group (Group D).

RESULTSThe level of [Ca(2+)](i) was significantly increased in the PB-injected cerebral hemisphere in the Group C as compared with that in the Group A and the Group B at 30 minutes after injection of PB. The level of [Ca(2+)](i) was kept higher in the 4 hours and 24 hours subgroups after the injection in the Group C (P<0.05). In contrast, the Ca(2+)-ATPase activities were decreased remarkably among all of the subgroups in the Group C. Nimodipine, which was administered after injection of PB, could significantly decrease the [Ca(2+)](i) and increase the activity of Ca(2+)-ATPase (P<0.05).

CONCLUSIONSThe neuronal calcium channel is opened after injection of PB. There is a negative correlation between activities of Ca(2+)-ATPase and [Ca(2+)](i). Nimodipine can reduce brain damage through stimulating the activities of Ca(2+)-ATPase in the mitochondria, and decrease the level of [Ca(2+)](i) in the synaptosome. Treatment with nimodipine dramatically reduces the effects of brain damage induced by injection of PB.

Analysis of Variance ; Animals ; Bordetella pertussis ; Brain Injuries ; metabolism ; Calcium ; metabolism ; Calcium Channel Blockers ; pharmacology ; Calcium-Transporting ATPases ; metabolism ; Cytosol ; metabolism ; Mitochondria ; enzymology ; Nimodipine ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Synaptosomes ; metabolism

Objective:To observe any effect of repeated unilateral high frequency transcranial magnetic stimulation (rTMS) on the swallowing function and functional magnetic resonance images of dysphagic stroke survivors.Methods:Twenty stroke survivors with dysphagia were randomly divided into a treatment group ( n=10) and a control group ( n=10). Both groups received traditional swallowing rehabilitation training, while the treatment group was additionally provided with high frequency rTMS over the cortical area of the suprahyoid muscle group of the healthy contralateral cerebral hemisphere. The stimulation frequency was 5Hz and the stimulation intensity was 80% of the resting movement threshold. During the 20-minute treatment, there was a 20-second interval between each 2-second dose of stimulation. Before and after the treatment, both groups were evaluated using the Eating Assessment Tool-10 (EAT-10), a swallowing functional communication measurement (FCM) and the modified Mann Assessment of Swallowing Ability (MMASA). In addition, functional magnetic resonance imaging was used to observe any changes in the relevant brain regions. Results:After the treatment the average EAT-10, FCM and MMASA scores of both groups were significantly better than those before the treatment, with the treatment group′s averages significantly superior to those of the control group. After the treatment, the activation range of the parietal lobe, the superior parietal lobule, the BA7 region and the BA40 area in the treatment group was significantly larger than before the treatment and larger than the control group′s ranges.Conclusions:Repeated high-frequency transcranial magnetic stimulation of the cortical area of the suprahyoid muscles in the contralateral cerebral hemisphere can improve dysphagia and promote the activation of brain areas related to swallowing after a stroke.

Genome sequences of 4 644 representative strains from human gut microbiota were analyzed to mine gene clusters for biosynthesis of novel secondary metabolites, as well as genes encoding antibiotic resistance and virulence factors. AntiSMASH analysis showed that more than 60% of the representative strains encoded at least one secondary metabolite gene cluster, and 8 potential novel secondary metabolite gene clusters were identified from 8 unculturable bacteria. The secondary metabolite gene clusters in human intestine are mainly composed of nonribosomal peptide synthetase (NRPS), bacteriocin, arylpolyene, terpene, betalactone and NRPS like gene clusters distributed in Clostridia, Bacilli, Gammaproteobacteria, Bacteroidia, Actinobacteria and Negativicutes. PathoFact analysis showed that genes encoding antibiotic resistance and virulence factors are widely distributed in representative strains, but the frequency encoded by potential pathogens is significantly higher than that of non-potential pathogens. The frequency of genes encoding secretory toxins such as outer membrane protein, PapC N-terminal domain, PapC C-terminal domain, peptidase M16 inactive domain, and non-secretory toxins such as nitroreductase family, AcrB/AcrD/AcrF family, PLD-like domain, Cupin domain, putative hemolysin, S24-like peptidase, phosphotransferase enzyme family, endonuclease/ exonuclease/ phosphatase family, glyoxalase/ bleomycin resistance was high in potential pathogens. This study may facilitate mining new microbial natural products from the intestinal microbiome, understanding the colonization and infection mechanism of intestinal microorganisms, and providing targeted prevention and treatment of intestinal microbial related diseases.
Humans ; Virulence ; Multigene Family ; Bacteria ; Drug Resistance, Microbial ; Virulence Factors ; Peptide Hydrolases