Electromagnetic Fields ; Environmental Exposure ; Humans ; Radiation Dosage ; Threshold Limit Values

Electromagnetic Fields ; Threshold Limit Values

Objective To observe the distribution of protein kinase C? subunit(PKC?) in the rat nervous system. Methods Immunocytochemical staining for PKC? by using specific antibody against PKC? was performed. Results Intensely and densely stained PKC? immunoreactive neurons were mainly observed in the cerebral cortex,hippocampus,amygdaloid complex,cerebellar cortex, ventral and dorsal cochlear nuclei, caudal spinal trigeminal nucleus and the superficial layers of the spinal dorsal horn.Conclusion\ PKC?\|containing neurons are widely located in the rat nervous system.These results provide morphological evidence for the functional roles of PKC? in the signaling transduction of the nervous system.\;[

Objective To develop an auxiliary recovering device for prone position nursing after the retina vitrectomy in order to improve comfort and treatment compliance.Methods The device was made of stainless steel,and consisted of a base,pulleys,supporting rods and a placing case.Totally 40 patients receiving retinal detachment operation were divided into an experimental group and a control group.The patients in the experimental group applied the auxiliary device and the ones in the control group underwent conventional nursing,and then a 2-week observation was executed on the prone time,overall satisfaction and adverse response after the operation.Results The device behaved well in prone time,patient comfort and satisfaction,and the experimental group gained advantages over the control group in prone time,relieving muscle pains,arthralgia,poor breath,anxiety and insomnia.Chi-square test proved the experimental group had the patient satisfaction significantly enhanced when compared with the control group (P＜0.05).Conclusion The device can be used for auxiliary nursing after retinal detachment operation with simple structure,easy operation and high comfort,and thus is worthy promoting practically.

Objective To explore a new simpler method for the preparation of recombinant alpha virus as a novel vaccine at the DNA level. Methods Plasmids expressing ? gal protein and helper plasmids were transfected into BHK cells. Virus in culture supernatant of the transfected BHK cells were collected and purified and used to infect BHK cells in vitro to identify the expression of target gene and the titre of the recombinant virus. Results Recombinant virus with high titre, prepared by this method, could be expressed well in mammalian cells in vitro . Conclusion High titre recombinant alpha virus can be produced at the DNA level and this method can be applied for vaccine preparation and gene therapy.

The genetic diversity of three Tibetan herbs, i. e., Sang-Di, E-Dewa and Ye-Xingba (Tibetan names), was studied based on the field collection, specimen identification and DNA sequence analysis. Swertia hispidicalyx, Gentiana lhassica and Scrophularia dentata, as the original plants of the three Tibetan herbs, were collected and identified. The regions of ITS, matK, rbcL, rpoC1, trnL(UAA), psbA-trnH, atpB-rbcL, trnS (GCU)-trnG(UCC), rpl20-rps12, trnL(UAA)-trnF(GAA) and nadl 2nd intron were amplified and sequenced. The ITS regions of S. hispidicalyx and S. dentata were cloned and sequenced, and the sequences were classified into different genotypes. All the sequences were analyzed and compared with those of closely related species. Our studies may provide reference for the genetic diversity analysis and molecular identification of the three Tibetan herbs.
Genetic Variation ; Gentiana ; classification ; genetics ; Phylogeny ; Plant Proteins ; genetics ; Plants, Medicinal ; classification ; genetics ; Scrophularia ; classification ; genetics ; Swertia ; classification ; genetics ; Tibet

Triple negative breast cancer (TNBC), as a special molecular subtype of breast cancer, is non-responsive to endocrine therapy or commercially available targeted therapy. It is characterized by early recurrence, rapid progression and poor prognosis. This systemic and comprehensive overview was focused on recent progress on molecular subtyping of triple negative breast cancer and its possible clinical value, chemotherapeutic agents and chemotherapy regimens, and combination of chemotherapy with potential molecular targeting agents.

ObjectiveTo analyze the seroepidemiologic of Mycoplasma pneumoniae infection and evaluate antibiotics medication of some positive patients by follow-up. Methods Serodia-MycolⅡ particle agglutination assay was used to detect serum antibodies against Mycoplasma pneumoniae in 3 134 clinically suspected infections. Mycoplasma pneumoniae infection was determined and seroepidemiologic was analyzed by results of the test, including positive antibody rates in whole subjects, in male or female groups, in different seasons or age groups as well as in different sources. Evaluate antibiotics medication of some positive patients by follow-up. The average days of medication were counted, different antibiotics medication and medication effect were analyzed. Results In 3 134 serum samples from clinically suspected Mycoplasma pneumoniae infections, 350 ( 11.2％ ) were tested with positive antibodies. The positive antibody rate in female patients was 12. 3％ ( 198/1 604), which was higher than 9. 9％ ( 152/1 530) in males (X2 =4. 58,P ＜0. 05). The peak season was found in the fourth quarter (October-December) with 13.2％ of positive antibody and the highest positive rate (32. 8％, 45/137 ) was found in school aged (5 -9 years old )children. Samples from pediatrics clinic and ward were tested to have highest positive rates ( 27. 9％ and 26. 5％, respectively ), comparing that from other sources. Infection due to Mycoplasma pneumoniae was identified in 28％ (7/25) of community-acquired pneumonia (CAP) patients, which is higher than other diseases. Based on the follow-up of 91 antibody positive patients, between 5 to 120 days ( mean 24. 2 days )were counted from appearance of clinical symptoms to clinic visiting/testing. 71 of 91 (78. 0％ ) patients was medicated with macrolide antibiotics, 4 (4. 4％ ) with quinolones, 4 (4. 4％ ) with cephalosporin, and the rest 12 ( 13.2％ ) patients were medicated with other antibiotics or only symptomatic treatment. The average period of antibiotics medication was between 3 to 21 days (mean 8. 2 days). Medication effect results by follow-up were cure in 35 ( 38. 5％ ), improvement in 50 (54. 9％ ), and poor responses in 6 (6. 6％ ).ConclusionsMycoplasma pneumoniae positive rate in female patients was higher than in males, and peak rate was found in the fourth quarter and in school aged children. Samples from pediatrics clinic and ward were tested to have highest positive rates. Physicians could choose first line antibiotics according to laboratory test results of Mycoplasma pneumoniae, and gain good effect.

Objective To preliminary investigate fetal left heart function of fetuses in α-thalassemia using spatio-temporal image correlation (STIC).Methods 95 volumes from fetal hearts in singleton pregnancies at 20-28 weeks of gestation were collected.STIC datasets were frozen in end-systole and enddiastole.Ventricular volumes were measured using VOCAL,Inversion and SonoAVC.The stroke volume was calculated from these measurements.Results All data sets could be measured with all three techniques in this study.The intraclass correlation coefficients (ICCs) between techniques were all ＞ 0.90.The time necessary to measure the stroke volume was significantly shorter using SonoAVC than using VOCAL and Inversion.Bland-Altman plots showed no clinically significant mean percent differences between stroke volume measurements obtained from each ventricle using three techniques.The left ventricular end-systole volume(ESV),stroke volume(SV)and ejection fraction(EF)was significantly different than fetuses with normal heart (P ＜ 0.05).Conclusions This study shows the feasibility of measuring left ventricular volumes during either systole or diastole and thereby calculating stroke volumes with all three techniques.And there was a high degree of reliability for all three techniques,as shown by excellent ICCs.There was good accuracy of STIC techniques in measuring fetal left ventricular volumes with cardiomegaly.

Adolescent ; Child ; Child, Preschool ; China ; epidemiology ; Female ; Humans ; Incidence ; Infant ; Male ; Respiratory Tract Infections ; epidemiology ; virology ; Virus Diseases ; epidemiology