Background and purpose:Angiogenesis plays an important part in growth and metastases of breast cancer. Nowadays researchers put more concern about whether endocrine therapy adjusts tumor angiogenesis in breast cancer. Here we investigated the regulation of vascular endothelial growth factor(VEGF) expression in breast cancer in response to various stimuli:estradiol(E2) ,ICI182780 and tamoxifen. Methods:We studied the regulation of VEGFmRNA expression in MCF-7 cells stimulated by E2 at different doses and duration by semiquantitative RT-PCR. When ICI182780 and Tamoxifen used alone or in combination with E2,the expression of VEGFmRNA was detected respectively. Results:Dose-dependent experiments indicated that the maximum VEGF mRNA level(0.125?0.006) -(0.112?0.014) was obtained at 1-10 nmol/L.The response of VEGFmRNA expression to E2(1 nmol/L) occurred in a time-dependent manner;the level of VEGF transcripts(0.105?0.009) signifi cantly increased within 2 h and reached a maximum at 6 h(0.140?0.024)(P

Objective To evaluate the feasibility to detect Prototheca in a mouse model of Prototheca zopfii cutaneous infection by using fluorescence in situ hybridization (FISH).Methods The model of Prototheca zopfii cutaneous infection was established by abdominal subcutaneous inoculation of Prototheca zopfii suspensions into 20 male BALB/c mice.Seven days after the inoculation,the mice were sacrificed,and tissue specimens were obtained from abdominal skin and subjected to microscopic examination,fungal culture and paraffin embedding.A PZ-probe was artificially synthesized and used to detect Prototheca in paraffin-embedded sections by using FISH.Moreover,both periodic acid-Schiff (PAS) and hematoxylin-eosin (HE) staining were performed to examine the paraffin-embedded sections.Skin specimens obtained from normal mice and Candida albicans-or Cryptococcus neoformans-infected mice served as the negative control.Results Clinical presentations,pathological examination and fungal culture results all confirmed the successful establishment of Prototheca zopfii skin infection model in mice.Prototheca was identified by FISH with the PZ-probe in the paraffin-embedded skin tissue sections from the murine model of Prototheca zopfii cutaneous infection,but not detected in the negative control tissue specimens,which was consistent with the results of PAS and HE staining.Conclusion FISH can be used to detect Prototheca in paraffin-embedded skin sections from the mouse model of Prototheca zopfii cutaneous infection.

Objective　To make a preliminary analysis of orthokeratology(OK) for treating myopia.Methods　OK lenses were chosen to treat myopia with or without astigmatism according to the myopia characterizations, then changes of their visions, refractions, corneal curvature and eccedtricities after being treated for ld, 1、2、3、4 weeks were observed once every 4weeks and were followed up for 18 months.Results　Significant changes were observed after being treated. Slight myopia: the diopters decreased-2.75D±0.50D,the horizontal meridians flattened 1.64±0.21, the vertical 0.92±0.27 and the eccedtricities declined 0.47±0.11; Middle myopia: the diopters decreased -5.50D±0.75D,the horizontal meridians flattened 2.16±0.45, the vertical 1.61±0.67, and the eccedtricities declined 0.38±0.07; High myopia:the diopters did -6.75D±0.50D,the horizontal did 3.86±0.56, the vertical 2.97±0.67 and the eccedtricities did 0.32±0.10. The predicabilities of slight and middle myopia were superior to high myopia's.Conclusion　Orthokeratology is a non-traumatic therapy and the clinical application should be careful and scientific.

Objective To study the sensitivity and reliability of rat skin anaphylactoid test method, detect and evaluate the anaphylactoid reaction of traditional Chinese medecine injection. Methods The condition of rat skin anaphylactoid test was optimized by studying the influencing factors of sensitivity and reliability of test with C48/80 as a tool drug, Tween80, endotoxin, China cobra toxin, trichosanthin injection, Tanreqing injection and Xuesaitong injection were investigated. Results The best conditions of rat skin anaphylactoid test was as follows:intrademal inject the drug with insulin syringe, 50-100μL per point, immediately inject 0.5%Evans blue dye 1 mL though caudal vein, 15 min later, kill the rat by carotid artery bleeding, clip dorsal skin to do the test. With this method, Tween80, endotoxin, China cobra toxin and trichosanthin injection all can induce blue stain in rat skin. Tanreqing injection showed no blue stain at the clinical dose. Xuesaitong injection although can induce blue stain in rat skin at the clinical dose, but the results cannot exclude the interference of its pharmacological function. Conclusion The method is simple with short test cycle, less dose of test drug, high detection sensitivity and good reproducibility, but some drug can show false positive result due to its own property.

To investigate the immunological enhancement effects of IL-2 with different doses in chicken Shigella vaccine on the duodenum mucosa in Gushi chicken,parental line Gushi chicken were grouped and inoculated with Shigella vaccines including different dose of IL-2.And then the distribution and change of SIgA positive cells and its secretion in the duodenum of the chicken were observed with the immunohistochemistry technology using the Qwin image analysis system.SIgA postive cells were distributed and located primarily in inhesion membrane and enteraden cavity of the duodenum mucosa,additive IL-2 in the Shigella vaccine could increase secretion of SlgA positive cells and strengthen the immunity of the birds,in some degree.The 50 μg IL-2 in the vaccine could display a optimal immunological enhancement effect.

Objective To evaluate the efficacy of ultrasound-guided continuous brachial plexus block for analgesia after fixation of upper extremity fractures in the pediatric patients.Methods Sixty American Society of Anesthesiologists physical status Ⅰ pediatric patients of both sexes,aged 3-10 yr,weighing 13-46 kg,with body height of 97-152 cm,scheduled for open reduction and internal fixation of distal humeral fractures,were selected and divided into 2 groups (n =30 each) using a random number table:intravenous analgesia group (group Ⅴ) and continuous brachial plexus block group (group B).Surgery was completed under brachial plexus block combined with general anesthesia in the two groups.At the end of surgery,patient-controlled intravenous analgesia was used in group Ⅴ,and continuous brachial plexus block was performed with 0.1％ ropivacaine 250 ml (background infusion 0.1 ml · kg-1 · h-1,bolus dose 0.2 ml/kg,lockout interval 30 min) in group B.Tramadol was given as rescue analgesic when necessary.Ramsay sedation scores were assessed and recorded at 2,4,8,12,24,36 and 48 h after surgery,and the development of over-sedation was recorded.The require,nent for rescue analgesics and development of respiratory depression,dizziness,nausea and vomiting,pruritus and urinary retention during analgesia were recorded.The development of adverse reactions such as vascular and nerve injury,local hematoma and pneumothorax was recorded in group B.Family's satisfaction with analgesia was assessed and scored.Results Compared with group Ⅴ,Ramsay sedation scores at 2-12 h after surgery,the incidence of oversedation,nausea and dizziness and requirement for tramadol were significantly decreased (P＜0.05),and no significant change was found in the degree of family's satisfaction with analgesia in group B (P＞ 0.05).The adverse reactions such as vascular and nerve injury,local hematoma or pneumothorax were not found in group B.Conclusion Ultrasound-guided continuous brachial plexus block can be safely and effectively used for analgesia after fixation of upper extremity fractures in the pediatric patients.

Heat stroke (HS) is a life-threatening illness characterized by core body temperatures above 40 ℃ coupled with central nervous system (CNS) dysfunction, including delirium, convulsions, and/or coma. Its morbidity has increased dramatically in the past few decades. Multiple organ dysfunction syndrome (MODS) is not only the most serious complication of HS, but also the leading cause of deaths. Understanding the pathogenesis, characteristic and advancement pattern of MODS caused by HS will have a profound effect on the clinical treatment, research and mortality decrease. The pathogenesis, injury characteristic of each system and organ, and treatment methods were summarized in this review so as to deepen the clinical recognition of this disease.

Objective To explore the role of type Ⅶ collagen (COL7A1) gene in the pathogenesis of pretibial dominant dystrophic epidermolysis bullosa (DDEB-Pt).Methods Peripheral blood samples were obtained from a sporadic Chinese patient of Han nationality with DDEB-Pt,his parents and 100 healthy human controls.A modified salting-out method was used to extract genomic DNA from the blood samples,and PCR was performed to amplify 118 exons of the COL7A1 gene followed by DNA sequencing.Results A G→A mutation was identified at position 6109 (G6109A) in exon 78 of the COL7A1 gene in this patient,which caused a change from GCT to ACT at codon 2037 in the triple helix region,and resulted in the substitution of glycine (Gly) by arginine (Arg) (p.Gly2037Arg).Conclusion A novel glycine substitution mutation was identified in the COL7A1 gene in the patient with DDEB-Pt,which may be a pathogenic mutation.

Objective To analyze the clinical features of 27 Chinese patients with Kennedy's disease(KD), a sex-linked inheritance disorder. Methods We collected the clinical data of 27 KD patients whose diagnosis were confirmed by gene examination to analyze their clinical features, as well as their serum levels of sex hormones and biochemical indicators. Results Patients with spinal and bulhar muscular atrophy tend to have an adult onset, exhibiting a slow progression of lower motor neuronal weakness and atrophy involving limbs and bulbar zones. Part of the invalids presented signs of androgen insensitivity such as gynecomastia or reduced sexual function, even though their degrees of sex hormones were normal. There was mild motor functional lesion which correlated with the course of the disease ( r = 0. 77, P = 0. 000). The degrees of creatine kinase ( ( 920. 10 ± 495.54 ) U/L ) and triglyceride ( ( 3.27 ± 2. 78) mmool/L) increased mildly and was significantly different from the levels of healthy ones (107.20 U/L,t =7.517,P =0.000;1.40 mmol/L, t =2.687,P =0.017). Conclusions Basically, Chinese KD patients present the same clinical features as the literature reports, however they have distinctive aspects such as elevated degree of triglyceride. The present research can help us to understand the features of Chinese KD more particularly.

The concepts of cold and hot herbal properties in traditional Chinese medicine (TCM), reflecting the efficacy trends of medicinal herbs, have the Fuzzy characteristics. It is suited for the application of Fuzzy mathematics in research of herbal properties. For a comprehensive evaluation of herbal properties, this work constructed and made a practice of the Fuzzy discrimination model regarding the biological performance of Chinese materia medica.