Objective To study the radiation protection and its molecular mechanism of the polysaccharide from Monostroma nitidum. Methods The mice were randomly divided into the normal group, the model group and 3 treatment groups. Polysaccharide from Monostroma nitidum was applied to the treatment group for 15 d before irradiation with 6.0 Gy rays. 30-day survival rate was observed. The counts of peripheral white blood cell, thrombocytes and erythrocytes were measured. The activities of the antioxidant enzymes SOD and GSH-Px were assayed , and the damage to the cell membrane was studied by measuring the lipid peroxides MDA levels. The spleen index and transformation response of splenic lymphocyte were determined. Results 30 day survival rate significantly increased in the polysaccharide groups. The animal experiment showed the counts of peripheral white blood cell, thrombocytes and erythrocytns were significantly and more rapidly recovered in the polysaccharide group after irradiation. The polysaccharides markedly increased the activities of GSH-Px and SOD and decreased the levels of MDA in the blood. In the irradiated mice, the polysacchaxide significantly increased the spleen index and transformation response of splenic lymphocyte when compared with irradiation mice.Conclusion The present observations suggest that the polysaccharide from Monostroma nitidum had a marked redioprotective effect on irradiated mice and that the biological response might be caused by the hematopoiesis recovery, antioxidant effect and immune activation.

ObjectiveTo investigate the learning curve of total thoracoscopicy cardiac surgery.MethodsClinical data of a succession of 125 patients undering total thoracoscopicy ASD and VSD repair between October 2004 to January 2010 were collected and reviewed.The procedure was perfomed by the same surgeon.The patients were divided equally into 5 groups (groupA,B,C,D and E,n =25 in each group ) according to the sequence of the operation.The operative time,extracorporeal circulation time,aortic cross-clamped time,the rate of conversion rate to thoracotomy and postoperative complications were compared between the 5 groups.ResultsThere were no statistically significant differences between the 5 groups with respect to age,gender,weight,dieases and surgical approach(P ＞ 0.05).The operative time,extracorporeal circulation time and aortic clump time in group A and group B significant longer then that in group C,group D and group E(P ＜0.05).Group A and group B was no statistically significant difference each other( P ＞ 0.05 ).Group C,D and E have no statistically significant differences between(P ＞0.05 ).The rate of conversion rate to thoracotomy and postoperative complications in 5 groups have no statistically significant differences comparative( P ＞ 0.05 ).ConclusionThe learning curve of total thoracoscopicy surgery is approximalely 50 cases.

Objective To explore the difference of gene expression profiling between normal basilar arteries and basilar arteries of cerebral vasospasm (CVS) after subarachnoid hemorrhage (SAH) in rabbits. Methods cDNA chip of normal basilar arteries and basilar arteries of CVS after SAH in rabbits were downloaded from GEO database. The chip was analyzed and screened by Bioconductor software, and function enrichment and pathway analysis of the differentially expressed genes were analyzed by Cytoscape software. Then 6 adult male Japanese rabbits were used, and randomly divided into normal control group (n=3) and SAH model group (n=3). Rabbit SAH models were established by cisterna secondary-blood-injection method. RNA data of normal basilar artery specimens on the 0 day and basilar artery specimens after SAH on the 5-day were used to validate the parts of differentially expressed genes by qRT-PCR. Results A total of 4356 differentially expressed genes were found in normal basilar arteries and basilar arteries of CVS after SAH in rabbits. Among them, 920 genes were considered to be significant with P-value<0.05, such as GRIK1, MYH13, ZNF45, SAA3, RLN1, MSR1 and others. Function enrichment analysis indicated that the differentially expressed genes were involved in regulation of Ca2+transmembrane transporter activity, negative regulation of ion transmembrane transport, regulation of potassium ion transport, positive regulation of JAK-STAT signaling cascades and other biological processes. Pathway analysis showed that calcium signaling pathway, cGMP-PKG signaling pathway, HIF-1 signaling pathway, PI3K-Akt signaling pathway and other signaling pathways maybe related with the differentially expressed genes. qRT-PCR verification showed that the expression of MSR1 in SAH model group was consistent with that of the chip result. Conclusion The gene expressions of basilar arteries of CVS after SAH in rabbits are significantly different, and MSR1 gene can be used as a potential target for studying the pathological mechanism of CVS.

Objective: To analyze clinical characteristics and risk factors in patients with acute myocardial infarction (AMI) complicated with cardiac rupture (CR) and to explore the prevention and treatment strategy in clinical practice. Methods: A case control study was conducted in 2 groups: CR group, the patients with coronary angiography conifrmed AMI with CR,n=44 and Control group, the patients with simultaneous STEAMI and by 1:3 pair-matched ratio,n=132. Clinical information was compared between 2 groups and the relevant risk factors for predicting CR were studied by Logistic regression analysis. Results: Compared with Control group, CR group had the lower ratio of β-receptor blocker application (22.7% vs 81.4%),P<0.05. Univariate regression analysis indicated that lower body mass index, incipient MI, anterior MI, no-reperfusion therapy, delayed reperfusion therapy, lower blood pressure at admission, post-infarction angina, ventricular aneurysm, higher Gensini score, high blood levels of cretinine and BNP, low ejection fraction were the risk factors for CR occurrence in STEAMI patients, allP<0.05. Multivariate regression analysis presented that incipient MI (P<0.049, OR=7.462), post-infarction angina (P<0.000, OR=8.591), ventricular aneurysm (P<0.005, OR=4.617) and higher Gensini score (P<0.001, OR=2.788) were risk factors for CR occurrence in STEAMI patients. Conclusion: Incipient MI, post-infarction angina, ventricular aneurysm and higher Gensini score are the risk factors for CR occurrence in STEAMI patients.

Despite the fact that the patency rate of saphenous vein graft(SVG) is less than those of arterial grafts,SVG is fully appreciated by cardiac surgeons and remains the most widely-used conduit for coronary artery bypass grafting(CABG).Recently,thanks to the growing understanding of the pathogenesis of vein graft failure(VGF),the emergence of new drugs and the improvement of surgical techniques,the patency rate of SVG has been well improved.This article reviews the history and the current understanding of SVG,the pathogenesis of VGF,the clinical strategies that may improve the patency rate and the research prospects in this filed.

Objective To discuss Bushen Huoxue Prescription mechanism of action on follicular granulosa cell apoptosis of premature ovarian failure (POF) mice. Methods The mouse zona pellucida 3 as the antigen, multi-point injection of subcutaneous immunization BALB/c to female mice was used to establish autoimmune POF model. Forty clean female mice were randomly divided into blank group, model group, Estradiol Valerate group and Bushen Huoxue Prescription group. All medicine groups were given relevant medicine for gavage, while model and blank groups were given normal saline with the same amount for gavage for 15 days. After the treatment, ovary, uterus, and thymus were weighed, and the viscera index was calculated. An ovarian slice was taken and HE staining was used to observe granulosa cell apoptosis. The levels of E2, LH, and FSH were detected by using the radioimmunoassay method. RT-PCR was used to analyze Fas and Fas-L mRNA expressions in ovarian granulosa cells. Results Compared with blank group, the weight of ovary, thymus, and uterus decreased significantly (P<0.05, P<0.01);Serum E2 level dropped (P<0.01);levels of FSH and LH, and expressions of Fas and Fas-L mRNA increased significantly (P<0.01). Compared with model group, granulosa cell apoptosis significantly decreased, and ovary index, uterus index, and thymus index increased (P<0.05);serum E2 level increased (P<0.01);levels of FSH and LH, and expressions of Fas and Fas-L mRNA significantly decreased (P<0.05). Conclusion Bushen Huoxue Prescription can decrease expressions of Fas and Fas-L mRNA to inhibit cell apoptosis by adjusting the hormone level of hypothalamus-pituitary-ovarianaxis.

Objective To determine whether regulatory T cells(Tr)are increased in patients with tuberculosis and whether they are associated with its immunopathology.Meantime,to investigate the possibility of tuberculosis(TB)as a model for studying Tr functions.Methods The lymphocyte subsets were isolated from peripheral blood mononuclear cells by sorting with flow cytometry.Total cellular RNA was extracted and RT-PCR was performed to detect the Foxp3 mRNA in purified CD3+CIM+T cells,CD3+CD8+T cells and non-CD3+CD4+CD8+T cells.Using FACS analysis.we further investigated the distribution of Foxp3+ population in CD4+ CD25+T cells.Finally,we compared the percentage of CD4+CD25highFoxp3+T cells present in 51 active patients with tuberculosis and 40 uninfected healthy control subjects by FACS.The detection of Tr infiltration of Foxp3+ cells were performed with immunohistochemistry(IHC)method on tuberculosis pathological sections.Results Foxp3 was specific expressed in CD3+CD4+T cells,either in tuberculosis patients or healthy control subjects.Foxp3+ T cells took about 85%fraction of CD4+ CD25highpopulation.We used CD4+CD25high Foxp3+as a detective markers for Tr in the FACS analysis.The results showed that patients with active TB had a 4.4 fold higher percentage within the CD4+T cells in peripheral blood compared to healthy control group(modian,1.01%vs 0.23%,P<0.01).Much higher frequency of Tr were found along with T cells infiltration at the tuberculosis pathological tissues.A few individuals that we can followed indicated the expanded Tr was declined after curative treatment with operation.Conclusion Tr cells are increased in tuberculosis patients and closely correlate with its immunopathology.Tuberculosis should be a valuable model for Tr functional study.

Objective To explore the clinical,neuroimage,and neuropsychological profiles of semantic dementia (SD).Methods Detailed medical history were collected on 18 SD patients.Brain MRI scans were administered.Neuropsychological evaluation taping semantic memory (things naming),overall cognitive function ( Mini-mental State Examination,MMSE),visuoconstructive skill ( Clock Drawing Test,CDT), daily functional ability (Activities of Daily Living, ADL), neuropsychiatric symptoms (Neuropsychiatric Inventory,NPI),and disease severity (Frontotemporal Lobar Degeneration Modified Clinical Dementia Rating Scale,FTLD-CDR) were performed on all patients.Results The mean age at onset was (60.6 ± 8.5 ) years,with 5 cases over 65. All patients developed progressive word-finding difficulty and anomic speech.Ten patients complained significant memory impairment and 14 experienced behavioral disturbance.Five patients were previously diagnosed as Alzheimer' s disease (AD) and 1 as schizophrenia.All patients developed marked semantic memory impairment both for living things and nonliving things.The mean score on MMSE was 10.94 ± 8.86,with 16 cases performed incorrectly on naming.Mean score on CDT copy was 4.61 ±0.85,with 14 cases scored normally.Mean score on ADL was 29.72 ± 8.75.Cases with a 5-year course showed a significant overall decline.Fourteen cases presented behavior symptoms and scored 8.00 ± 7.22 on NPI.All patients scored worst on language domain among all the domains evaluated in FTLD-CDR.Atrophy,typically involving the left anterior temporal was shown on MRI scans.However,predominantly right temporal atrophy was observed in one patient.Atrophy confined to the temporal lobe in patients with early stage and extended to the contralateral temporal,frontal lobe,and parietal lobe as disease progression. Conclusions Current study suggested that SD tend to develop in presenile age.However,about 1/3 cases develop the disease after 65 years. Deficit in language is the earliest and most prominent symptom. Behavior change is prevalent as well. Patients are commonly misdiagnosed as AD or lack a definite diagnosis.Visuoconstructive skill and other abilities are relatively preserved in the early stage.With progression into the 5th years,overall decline comes inevitably.Brain scans can reflect the disease characteristics and progression. Of note,there exists individual with right dominant atrophy.

Objective To explore the characteristics and efficacy of manual treatment for postpartum hypogalactia.Methods To retrieve the CNKI from 2007 to 2017 on the massage and manual treatment for postpartum hypogalactia,and analyze its syndrome differentiation,acupoint selection,manipulation rules,treatment frequency,treatment courses and clinical efficacy.Results Among the 83 articles included,the massage therapy for postpartum hypogalactia were based on the diseases and syndromes,and the selection of acupoints was diverse and combined with local and distance such as Danzhong (CV 17),Rugen (ST 18),Shaoze (SI 1),Zusanli (ST 36),Pishu (BL 20).The therapy were rich in techniques which often use acupoint stimulation and manipulation.Conclusions Tuina therapy for postpartum hypogalactia is widely used with safety and reliablility.But the operational procedures and efficacy standards need to be further standardized.