Vitamin D deficiency is a global public health problem.Vitamin D is well known for its classic role in the maintenance of bone mineral density.In addition,vitamin D is also closely related to many infectious diseases.This article describes the physiology of vitamin D and methodology for 25-hydroxyvitamin D or 25(OH) D.The factors that influence vitamin D levels in children and the relationship between vitamin D deficiency in children and infectious diseases are introduced.

BACKGROUND:Autologous peripheral blood stem cels have pluripotent characteristics, promote ischemic limb angiogenesis, improve and restore the blood supply to the affected limb.
OBJECTIVE:To observe the therapeutic effect of autologous peripheral blood mononuclear cel transplantation in rats with thromboangitis obliterans.
METHODS:Twenty-four rats were randomized into control, model and granulocyte colony stimulating factor (G-CSF) groups. In the latter two groups, animal models of thromboangitis obliterans were established by femoral arterial injection of sodium laurate. In the G-CSF group, rats were injected with recombinant human G-CSF for 5 successive days for peripheral blood mononuclear cel mobilization, and then underwent peripheral blood mononuclear cel transplantation at day 7. In the control and model groups, rats were given normal saline injection.
RESULTS AND CONCLUSION:After modeling, foot dorsum temperature and the percentage of CD4+CD25+ regulatory T cels decreased significantly in the model and G-CSF groups, and the area of leg ulcers was enlarged notably in these two groups. In the G-CSF group, the number of white cels and percentage of CD34+ cels to mononuclear cels were increased at 6 days after mobilization; the foot dorsum temperature and the percentage of CD4+CD25+ regulatory T cels increased significantly at 1 month after peripheral blood mononuclear cel transplantation, which were close to the normal values. These findings indicate that autologous peripheral blood mononuclear cel transplantation folowing cel mobilization increases the percentage of CD4+CD25+ regulatory T cels in rats with thromboangitis obliterans, thus promoting relief of symptoms and ulcer healing.

BACKGROUND:Studies have shown that neural stem cel transplantation has a certain effect on neuropathic pain, but the efficacy of transplanted cel number on neuropathic pain is not exactly understood. OBJECTIVE:To observe the effect of different amount of neural stem cels administered intrathecaly on the neuropathic pain and expression of glial-derived neurotrophic factor in the spinal cord dorsal horn and dorsal root ganglion in rats after partial sciatic nerve transaction. METHODS:A Sprague-Dawley rat at 14-16 days of pregnancy was used to prepare neural stem cel suspensions that were injected intrathecaly into rat models of partial sciatic nerve transaction at doses of 1×103, 1×104, 1×105, 1×106, 1×107cels per 30 μL, respectively. Additionaly, model group and sham-operated group were set up. Threshold values of mechanical and thermal pain were recorded 1 day before operation, 1, 3, 7, 14, 21 days after operation. Expressions of glial-derived neurotrophic factor protein and mRNA in the ipsilateral spinal cord dorsal horn and dorsal root ganglion were detected by immunohistochemistry and RT-PCR, respectively, at 7 and 21 days after partial sciatic nerve transaction. RESULTS AND CONCLUSION: Pain threshold values were decreased in al the groups except the sham-operated group at 1 day after operation, and reached the peak at 7 and 14 days after operation (P < 0.05). Compared with the model group, the pain threshold values and the expression of glial-derived neurotrophic factor protein and mRNA in the ipsilateral spinal cord dorsal horn and dorsal root ganglion were increased gradualy in a dose-dependent manner in the 1×104, 1×105, 1×106, 1×107 groups at 7 days after operation (P < 0.05). At 21 days post-operation, the pain threshold values showed no differences from the preoperative findings in the 1×105, 1×106, 1×107 groups, but the expression of glial-derived neurotrophic factor was significantly higher in the 1×105 group than the other groups (P < 0.05). Taken together, intrathecal transplantation of neural stem cels at a dose of 1×105 is the most effective in aleviating partial sciatic nerve transaction-induced neuropathic pain in rats.

Objective To reveal the research focus of schistosomiasis in China through analyzing highly cited schistosomiasis related papers in journals from 2005 to 2012,so as to provide the information for formulating the plan of selecting topics of the edi-tors. Methods The published articles related to schistosomiasis in CNKI from 2005 to 2012 were collected,the citation frequen-cy of the papers was calculated according to formula,and the highly cited papers were selected according to the citation frequency. Then the information of highly cited papers including the published time,type,author and author affiliation,citation frequency, journal,grant and research item,research status and development tendency were analyzed. Results A total of 3 639 published papers related to schistosomiasis were searched and 343 papers(the citation frequency≥8)were selected as highly cited papers, and Chinese Journal of Schistosomiasis Control shared 45.19%of them. Among these papers,original articles,reviews and special reports occupied 44.90%,12.54%and 6.12%,respectively. The first authors of these papers were mainly from centers for disease control and prevention(CDCs)(17.33%),research institutions(22.67%)and colleges/universities(36.00%). Totally 50.44%of the articles received financial supports from research funds/foundations,and most of them were national or provincial funds. The research hotspots focused on epidemiology and prevention,epidemic situation analysis,vaccine,immunologic diagnosis,pharma-ceutical research,immunity and infection. Conclusions The highly cited papers related to schistosomiasis are mainly from CDCs,institutions and colleges/universities. The research hotspots mainly focus on epidemiology and prevention,vaccine,immu-nology and pharmaceutical study. The related journals can use this information to chose topic and solicit contributions to improve their influence.

Objective To analyze the highly cited malaria papers published in Chinese journals from 2006 to 2013,so as to provide the evidence for formulating the plan of selecting topics to the journal editors. Methods The published articles related to malaria included in CNKI and Wanfang medical network from 2006 to 2013 were collected,and the highly cited papers were selected according to the citation frequency calculated by Price’s formula. Then the characteristics of the highly cited papers were analyzed. Result From 2006 to 2013,a total of 1 976 published papers related to malaria were searched in Chinese jour?nals and 98 papers of them were selected as highly cited papers. In the highly cited papers,18 papers were published in China Tropical Medicine,and 16 and 15 papers were published in Chinese Journal of Parasitology and Parasitic Diseases and Chi?nese Journal of Schistosomiasis Control,respectively;and original articles accounted for 42.86%;the first authors of these pa?pers were from 44 institutions,and 40.91%of them were from centers for disease control and prevention(CDCs);a percentage of 22.45%of the highly cited papers received fund programs,and most of them were national or provincial funds. The research hotspots were focused on the epidemiology and control,and epidemic situation of malaria. Conclusion The highly cited papers related to malaria are mainly from CDCs and research institutions,and the related journals could use this information to chose topics and solicit contributions to improve their influence.

Objectives To study the signiifcance of ifbrin related markers such as ifbrin monome (FM), D-dimer (D-D), fibrinogen and fibrin degradation products (FDP) in diagnosis of pre-disseminated intravascular coagulation (pre-DIC) state in children with severe pneumonia. Methods A total of 213 children with severe pneumonia in pediatric intensive care unit were divided into pre-DIC group and case control group according to the occurrence of pre-DIC. And 40 healthy children were included as normal control group. FM、D-D、FDP、prothrombin time (PT)、activated partial thromboplastin time (APTT)、ifbrinogen (FIB)、platelet count (PLT)、thrombomodulin (TM) levels were analyzed. Receiver operating characteristic curve was used to evaluate the above indexes. Results All the markers but FIB showed signiifcant difference among the three groups (P<0 . 05 ). The differences of FM、D-D、FDP、APTT in paired comparison among the three groups were also signiifcant (P<0.01), Pre-DIC group had the highest level and case control group was the second. Pre-DIC group had higher PT than that of the other two groups (P<0 . 05 ), but PT levels in normal control group and the control group are of no signiifcant difference (P>0 . 05 ). Compared with those in normal control group, TM and PLT levels were signiifcantly higher in the other two groups (P<0 . 01 ), but the differences of TM and PLT in pre-DIC group were not signiifcant in comparison to those in case control group (P>0 . 05 ). FM、D-D、FDP had larger area under curves (AUC) for pre-DIC than other indexes ( 0 . 84、0 . 76、0 . 64 , respectively). The AUC for the joint detection of the three indexes was 0 . 85 . Conclusions Fibrin related markers such as FM、D-D and FDP are valuable indexes in diagnosis of pre-DIC state in children with severe pneumonia, the joint detection of the three indexes would help to improve diagnostic accuracy.

Abstact:Objective To investigate the clinical value of mean platelet mass(MPM)and the procalcitonin(PCT)in diagnosis of Kawasaki disease (KD).Methods A Total of 117 children with KD in the acute stage and 126 children of the control group were detected respectively and compared each other.The indexes contain MPM,PLT,MPV,PDW and PCT.Mean-while,the comparison of each index’s positive rate and the linear correlation analysis of each index were conducted.Results①The level of MPM of the KD group was significant lower than that of the control group,PLT,MPV and PCT significant higher than those (P<0.05,α=0.05).The difference of PDW between the two groups was no statistical significance (P>0.05,α=0.05).②The positive rate of the MPM was significant higher than that of the other indexes (P<0.05,α=0.05). Conclusion The detection of MPM is helpful to the diagnosis of KD and can be used as an indicator of KD clinically.

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 study the distribution and drug resistance of coagulase negative Staphylococcus(CNS)that leads to nosocomial infection.METHODS Nosocomial CNS was identified and then drug resistance test was performed by K-B method.Nitrocefin method and the Congo red method were utilized to detect ?-lactamase and the slime,respectively.RESULTS Of all 162 CNS strains isolated,there were 102 strains of MRCNS and 60 strains of MSCNS including 83 S.epidermidis strains,accounting for 51.2%.Among all the MRCNS and MSCNS strains above,the positive rates of the ?-lactamase were 100.0% and 5.0%,respectively,and the positive rates of the slime were 17.6% and 1.7%,respectively.The resistance rates of MRCNS to 12 types of antibiotics were higher than those of MSCNS(P

MAH(group 2) and TVH (group3);Mean lose blood:TAH(group 1) was much more than other groups remarkably;Mean after operation anus exhaust time:TAH(group 1) and MAH(group 2) was much more than other groups;Mean expenditure:LAVH(group 4) was much more than other groups.Conclusion Every means has its strong point and defect,can't substitute mutually.Operation must be based on technique,installation term,the patient's illness distinguishing feature,the patient's economical capability and their desire to choose the mean.