BACKGROUND: Infection following kidney transplantation has become one of the main reasons for graft failure and death of allograft recipients. However, there is not a standard therapeutic scheme for infection following kidney transplantation. OBJECTIVE: To investigate the clinical features and treatment measures of infection, additionally, to increase the cure rate of infection following kidney transplantation.DESIGN, TIME AND SETTING: A retrospectively analysis was performed at the Organ Transplantation Center, the First Affiliated Hospital of Kunming Medical College from February 2006 to February 2008.PARTClPANTS: Eighteen cases of infections in 84 kidney allograft recipients.METHODS: All cases were checked by chest X-ray. Patients who had no significant lung infection symptoms or obvious signs received lung CT scan. Pathogen detection was performed, including hemoculture, urine culture, sputum culture, nose swabs culture, throat swab culture, checking clinically important cytomegalovirus (CMV), EB-DNA and mycoplasma in blood, acid-fast bacilli and eumycete culture in sputum. All cases of pulmonary infection underwent a comprehensive treatment-antiviral drugs, antibiotics and antifungal. Depending on the individual condition and absolute values of lymphocytes and CD4+T cells, the immunosuppressant was adjusted individually. The occurrence time, clinical symptom, auxiliary examination and treatment strategies were analyzed.MAIN OUTCOME MEASURES: The occurrence time of infection and clinical symptoms; imaging manifestation and results of pathogenic detection; selection of antibiotics and immunosuppressant adjustment.RESULTS: Among 18 cases, 11 cases (61.2%) were deceased-donor kidney transplant recipients. Inflection following kidney transplantation occurred in 12 cases (66.7%) within 3 months, and increased to 15 cases (83.3%) within 3-6 months. Of the 18 infection cases, 14 cases (77.8%) had a main symptom of fever. There were 15 cases (83.3%) of respiratory tract infection, including 13 cases (72.2%) of pulmonary infection. Fungal cultivation, especially Monilia, was positive in 6 cases. Three out of the 18 cases (16.7%) died, two of whom had CMV infection. Mixed infection occurred in all cases.CONCLUSION: Infected patients following kidney transplantation present with diversity pathogens, which are dominated by bacteria, fungus and virus. Severe pneumonia combined with CMV infection demonstrates that poor prognosis, fungal and virus infection following kidney transplantation should be given more attention. Combined de-escalation therapy is the main method, and timely adjustment and even discontinuance of immunosupprassive agents is one of the key points in the treatment of infection following kidney transplantation

Objective To study the methods and results of endovascular treatment of posterior inferior cerebellar artery (PICA) aneurysms. Methods Twenty-one patients with PICA aneurysms were treated with endovascular treatment. The locations of aneurysm on PICA were evaluated through the DSA. Eight patients received single coil embolization, 5 received liquid Glue embolization, 2 received coil embolization combined with liquid Glue, 2 received coil embolization assisted with stents, and 4 underwent ocelasion of the parent PICA. Outcome was evaluated with the Glasgow outcome scale (COS). Results There were complete (100%) occlusion in 5 patients, near complete (>90% ) occlusion in 2, and incomplete (85%) occlusion in 1 in single coil embolization. Seven patients with Glue embolization (n = 5 ) or combination with coils ( n = 2 ) exhibited complete ( 100% ) occlusion. There were near complete ( >90% ) occlusion in 2 cases with coil assisted with stents. Complete occlusion of the parent PICA was achieved in 3 patients, and near complete occlusion of PICA in one case. One patient suffered from new neurological deficits, and one patient treated with coils and stents died. None of the patients suffered from re-bleeding. These patients received follow-up during a mean period of (22±8) months. Overall long-term outcome was good ( GOS score 4 or 5 ) in 17 patients, poor ( COS score 2 or 3) in 3, and fatal ( GOS score 1 ) in one case. Conclusions According to the location of aneurysms on PICA, aneurysms can be effectively and safely treated with endovaecular embolization.

Objective To review the three-dimensional characteristics and configuration of cranial base arteries of patients with intracranial berry aneurysms. Methods All the 70 patients with intracranial berry aneurysms (83 cases)were admitted from January to December in 2007. Their images of spiral computer angiography (CT) were presented and analyzed retrospectively. The site, size and figures of aneurysms were recorded, especially the variations of cranial base arteries were analyzed. Results Cerebral anterior communicating artery (ACoA) was the frequent site where aneurysms located. Incidence of ACoA aneurysms was 43.37%(36/83), that of posterior communicating artery (PCoA) was 28.92%(24/83), that of internal carotid artery was 9.64% (8/83), that of middle cerebral artery was 6.02% (5/83), that of A1-A3 was 3.61% (3/83), that of basilar artery was 3.61% (3/83), that of posterior cerebral artery was 2.41% (2/83), that of posterior inferior cerebellar artery was 1.20% (1/83),that of anterior choroidal artery was 1.20% (1/83).The shape of many berry aneurysms was regular. Mutational rate of cranial base arteries among aneurysms were 56.63% (47/83) and ACoA ancurysms with A1 dysplasia rate was 72.22% (26/36). Conclusions The solid shape and vascular variation of intracranial berry aneuryams can be optimally identified by spiral computer angiography. The occurrence of berry aneurysms might be associated with variation of cranial base arteries.

Objective To investigate whether the polymorphism of rs10260404 in DPP6 gene in Chinese Han origin is associated with sporadic amyotrophic lateral sclerosis (SALS). Methods The genomic DNA was extracted from the leukocytes of whole blood samples in 58 Chinese Han patients with SALS and 52 healthy controls. The asymmetric PCR was processed in the presence of an unlabeled probe that contained the rs10260404 locus. The product was genotyped on light scanner and some was confirmed with sequencing. Results Two single nucleotide polymorphism, rs10260404 that was reportedly consistently strongly associated with susceptibility to SALS in different populations of European and American ancestry, rs10260404 were genotyped, but not strongly associated with ALS in Chinese patients(SALS:C:12.94%,T:87.06%;health controls:C:10.58%,T:89.43%;χ2=0.29,OR=1.256,95%CI 0.549-2.872, P>0.05). Conclusion The rs10260404 is not associated with ALS susceptibility in Chinese people.

Objective To identify the mutations in Cu/Zn superoxide dismutase ( SOD1 ) gene in three Chinese kindreds with amyotrophic lateral sclerosis ( ALS), compare the genotypes with those found in other ethnic groups and to analyze the clinical characteristics.Methods The diagnosis of ALS met El Escorial ALS diagnostic criteria.Genomic DNA was extracted from peripheral blood in ALS patients using standard procedure.PCR amplifications of five exons of SOD1 were performed using primers as described in the previous publication.The PCR products were directly sequenced.Results A heterozygous mutation H46R was found in four affected members in a family with middle age onset and slowly progressive ALS.A heterozygous mutation of G72C was identified in a 20-year-old male who died of respiratory failure after two years of ALS.His father carried the same mutation without clinical phenotype.In the third family with 20affected members with middle age onset and rapidly progress, a mutation of E13V was identified in 5 affected subjects.Conclusions This study is the first large screening of SOD1 mutation in Chinese familiar ALS patients.H46R has previously been found only in Japanese and Pakistanis; this is the first report in Chinese, suggesting H46R may be specific to Asians.The family with mutation G72C presented decreased penetrance, therefore screening SOD1 mutation in sporadic cases and unaffected family members is necessary.E133V is the first reported mutation and needs more study to investigate its effect on the disease.

In the present study,we examined the codon usage bias between pseudorabies virus (PRV) US1 gene and the US1-like genes of 20 reference alphaherpesviruses.Comparative analysis showed noticeable disparities of the synonymous codon usage bias in the 21 alphaherpesviruses,indicated by codon adaptation index,effective number of codons (ENc) and GC3s value.The codon usage pattern of PRV US1 gene was phylogenetically conserved and similar to that of the US1-like genes of the genus Varicellovirus of alphaherpesvirus,with a strong bias towards the codons with C and G at the third codon position.Cluster analysis of codon usage pattern of PRV US1 gene with its reference alphaherpesviruses demonstrated that the codon usage bias of US1-like genes of 21 alphaherpesviruses had a very close relation with their gene functions.ENc-plot revealed that the genetic heterogeneity in PRV US1 gene and the 20 reference alphaherpesviruses was constrained by G+C content,as well as the gene length.In addition,comparison of codon preferences in the US1 gene of PRV with those of E.coli,yeast and human revealed that there were 50 codons showing distinct usage differences between PRV and yeast,49 between PRV and human,but 48 between PRV and E.coli.Although there were slightly fewer differences in codon usages between E.coli and PRV,the difference is unlikely to be statistically significant,and experimental studies are necessary to establish the most suitable expression system for PRV US1.In conclusion,these results may improve our understanding of the evolution,pathogenesis and functional studies of PRV,as well as contributing to the area of herpesvirus research or even studies with other viruses.

Objective: To study the antioxidation and effects of water soluble extract from Natto on hyperlipidemia. Methods: The model of experimental hyperlipidemia was induced by high cholesterol diet. 18 rabbits were divided into 3 groups : model group, natto extract group and control group. Results: The natto extract could reduce the blood total cholesterol (TC), triglyceride (TG), low density lipoprotein cholesterol (LDL-C), malon-dialdehyde (MDA), atherogenic index (AI) of experimental rabbits 39.88% , 44.54% , 48.84%, 48.25% and 70.20%, respectively, and increase high density lipoprotein cholesterol (HDL-C), superoxide dismutase(SOD) 75.81% and 38.32%, respectively. Natto extract could prevent effectively the fatty degeneration of liver cells observed by pathological sections. Conclution: Natto extract can efficiently prevent the formation of experimental hyperlipidemia.

The article discusses the curriculum truss of medical biosciences major and the curriculum setup with basic medical courses as the foundation,highlighting the life science scopes and emphasizing integrated curriculum and the training of molecular biology technology to culture practical cross-subject talents in the life sciences for society.

BACKGROUND: Valsartan is an antagonist of angiotensin Ⅱ (Ang Ⅱ ) receptor. Many researches have proved that it can protect heart tissue. Val-PREST suggests that valsartan with a long-term administration can decrease restenosis rate in stent; however, effect of valsartan on restenosis rate of Chinese population is still unclear presently.OBJECTIVE: To evaluate the effect of oral valsartan for 6 months on patients with coronary heart disease (CHD) who undertook successful intervention therapy.DESIGN: Multicenter, double blind, randomized, and controlled evaluation and prospective design.SETTING: Beijing Friendship Hospital Affiliated to Capital Medical University; Beijing Anzhen Hospital Affiliated to Capital Medical University; Peking Union Hospital; People's Hospital of Peking University; Beijing Tongren Hospital Affiliated to Capital Medical University; Beijing Shijingshan Hospital; Beijing Fuxing Hospital Affiliated to Capital Medical University;Beijing Chuiyangliu Hospital.PARTICIPANTS: Eight three-grade A hospitals in Beijing participated in the study. Since December 2002 to October 2003, a total of 200 patients who underwent bare mental stent implantation were consented, but 196 patients were recruited in the end. All 196 patients were randomized into valsartan group (100 cases) and control group (96 cases).METHODS: Basic medicines in the two group included aspirin, clopidogrel, nitrides, statins, β-receptor antagonists, calcium channel antagonists, etc. Additionally, Patients in valsartan group were also given valsartan (Beijing Nuohua Pharmaceutical Co. Ltd., batch number: SD 34004) in a dosage of 80 mg a day. Both groups were followed-up once a month for total 6 months.MAIN OUTCOME MEASURES: ① Major adverse cardiac events within 6 months on clinics (death, non-fatal myocardial infarction, hospitalisation once more due to recurrent myocardial ischemia, and target vessel revascularization); ② Results of duplicated coronary angiography or exercise treadmill test (ETT) of partial patients within 6 months.RESULTS: ① Two patients (2%) in valsartan group were excluded in this study because of intolerance, so 194 patients were involved in the final analysis. ② No significant differences of baseline characteristics in terms of lesion type, the number of diseased vessels and the cardiac function were found between the two groups (P ＜ 0.05). ③ During the period of 6-month follow-up, one case died in control group. One acute myocardial infarction occurred in each group, whilst one case undertook target vessel revascularization in valsartan group. It was found that the proportion of recurrent cardiac events was lower in valsartan group than that in control group (11.2% vs. 15.6%). However, this difference did not reach the statistic significance. ④ During the period of 6-month duplicated contrast examination, one case had restenosis of in-stent in valsartan group. ⑤ The positive rate of exercise treadmill test (ETT) was lower in valsartan group (25.7%) than that in control group (36.4%), but there was no statistic difference.CONCLUSION: Six-month oral valsartan on patients with coronary heart disease who undertook successful intervention therapy can decrease the trend of recurrent cardiac events and positive rate of ETT.

Objective Amyotrophic lateral sclerosis(ALS)is a progressive paralytic disorder resulting from the degeneration of upper and lower motor neurons.Sporadic ALS(SALS)accounm for majority of patients.ALS is a kind of complex disorder.There were several single nucleotide polymorphism (SNP)reported to be associated with SALS in recently published genome-wide association(GWA)study,but there are few data from Asia ALS population and no report focus on SNP which may associated with SALS of Chinese origin.Our study is to screen and add the SNPs related to the risks of SALs in Chinese.Methods Eighty-six individuals with SALS and 94 matched controls were recruited for our study and genomic DNA from blood samples was extracted.Genotypes were determined by a matrix assisted laser desorption/ionization time of flisht mass spectrometry based approach followed by association analysis. Results Individual genotype data for 8 SNPs,rs6700125,rs10260404, rs1942239,rs2279812,rs2405657,rs558889,rs6922711 and rs935 1470 in Chinese population showed no significant association with sporadic ALS.Combining genotype data from published GWA,rs1942239 gained in strength of allelic association(P value decreased to 9.07×10-5 from 1.48×10-4),and rs558889 deviated Hardy-Weinberg equilibrium at ALS case group which may be associated with susceptibility.Conclusions SNP rs1942239 and rs558889 may contribute to susceptibility of sporadic ALS in Chinese patient.The larger sample studies are warranted to confirm the association.