ABSTRACT
Cellular prion protein (PrP(C)) is ubiquitously expressed in the cytomembrane of a considerable number of eukaryotic cells. Although several studies have investigated the functions of PrP(C) in cell proliferation, cell apoptosis, and tumorigenesis of mammals, the correlated functions of chicken PrP(C) (chPrP(C)) remain unknown. In this study, stable chPrP(C)-downregulated Marek's disease (MD) virus-transformed avian T cells (MSB1-SiRNA-3) were established by introducing short interfering RNA (SiRNA) targeting chicken prion protein genes. We found that downregulation of chPrP(C) inhibits proliferation, invasion, and migration, and induces G1 cell cycle phase arrest and apoptosis of MSB1-SiRNA-3 cells compared with Marek's disease virus-transformed avian T cells (MSB1) and negative control cells. To the best of our knowledge, the present study provides the first evidence supporting the positive correlation between the expression level of chPrP(C) and the proliferation, migration, and invasion ability of MSB1 cells, but appears to protect MSB1 cells from apoptosis, which suggests it functions in the formation and development of MD tumors. This evidence may contribute to future research into the specific molecular mechanisms of chPrP(C) in the formation and development of MD tumors.
Subject(s)
Animals , Apoptosis , Carcinogenesis , Cell Cycle , Cell Proliferation , Chickens , Down-Regulation , Eukaryotic Cells , Mammals , Marek Disease , RNA, Small Interfering , T-LymphocytesABSTRACT
In this article, we summarize the main policy on encouraging nongovernmental investors to establish medical institutions in Wenzhou , Zhejiang Province.Based on the survey of private medical institutions in Wenzhou , we find that there are still many issues that should be resolved in terms of nongovernmental investors establishing pri -vate hospitals , such as the difficulty in implementing construction projects , spending too long time applying for the medical insurance unit , the complicated application procedures of incentive funds , the unequal status with public health hospitals in financing and the development of human resource for health , and the low-level administration and social reputation.Therefore , for promoting the sustainable development of private health hospitals , it is of great im-portance to have a breakthrough in the implementation of the policy ,such as supporting policies reform , financing and talent support , strengthening supervision , and so on.
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Compared to the mature monitoring and reporting system of ADRs in developed countries such as the USA and EU,medical institutions in China have played too much a role.Instead,local primary monitoring and reporting system of ADRs should expand their scope of monitoring and reporting,as drug makers,chain drugstores and retailers should develop an effective ADR monitor/report system as well.At present,such a primary system is plagued by insufficient budget and staff,imbalanced urban/rural layout and defective statements.Recommended measures include enhanced surveillance for drug makers,chain drugstores and retailers,for higher reporting ratio of ADRs at primary level; greater publicity and better monitoring and penalty mechanism; better platform for various organizations.
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Investigations and interviews on six county (city)-level public hospitals practicing the drug zero price margin policy discovered increases on average outpatient expense per visit,average outpatient drug expense per visit,ratio of outpatient drug expense,average drug expense per hospital discharge,and ratio of drug expense upon discharge as well as the total ratio of drug expenses.An analysis of the poor performance of the policy results in the following recommendations.A better performance of this policy calls for support of such reforms as drug supply manner,drug price control,doctors' incentives for over-prescription and payment manner at public hospitals.Only with these support can this policy reach its expected outcomes of alleviating the drug expense burden of the people.
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Objective To explore the diagnostic value of 64 layers spiral CT for gastric carcinoma .Methods The 87 patients (primarily diagnosed gastric carcinoma )were studied and scanned under 64 layers spiral CT including plain scans and enhanced scans respectively .The source images were reconstructed using the technique of multilane volume reconstruction (MPVR) and CT virtual endoscopy (CTVE) and conducting TNM stage ,then compared to histopathology results after surgery .Results 85 out of 87 patients with gastric carcinoma were diagnosed by CT .Detection rate of multi-detector CT(MDCT) for gastric cancer was 97 .7% , while the early stage and advanced stage gastric carcinoma were 66 .7% and 100% respectively .The accuracies of 64 layers spiral CT for the T stage ,the N stage and the M stage of the gastric carcinoma were 83 .9% ,72 .4% and 92 .0% respectively .Conclusion 64 layers spiral CT could be helpful for the diagnosis of gastric carcinoma and TNM stage .It might play great roles for the diag-nosis and treatment of gastric carcinoma .
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Acupuncture and moxibustion therapy was used to treat 49 cases of restless legs syndrome. Yanglingquan (GB 34), Jinggu(BL 64), Chengshan (BL 57), Chengjin (BL 56) and Shangqiu (SP 5) were the main acupoints; Ganshu (BL 18), Shenshu (BL 23) and Taixi ( KI 3)were matched to the type of deficiency of liver and kidney yin; Xuehai (SP 10) and Sanyinjiao (SP 6) were matched to the type of cold-dampness entering interior. Chengshan (BL 57) and Chengjin (BL 56) were needled. After the arrival of qi, warm needling was done. Bilateral cases disappeared and the clinical symptoms of 1 case disappeared partly.
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<p><b>OBJECTIVES</b>To assess the tendency of manometric asymmetry, and to quantitatively evaluate the function of the anal sphincter.</p><p><b>METHODS</b>Using the PC polygram HR at the states of relax and squeeze, we compared the values of pressure asymmetry in the anorectum of 27 normal children with that of 12 children with fecal incontinence.</p><p><b>RESULTS</b>In the two states, the anal sphincter in normal children showed not only the gradient of pressure, but also a gradient of pressure asymmetry. Children with fecal incontinence did not show any gradients.</p><p><b>CONCLUSION</b>Gradients of pressure and pressure asymmetry can quantitatively evaluate the function of the anal sphincter.</p>
Subject(s)
Adolescent , Child , Child, Preschool , Female , Humans , Male , Anal Canal , Physiology , Fecal Incontinence , Manometry , Rectum , PhysiologyABSTRACT
Objeotiver To discuss the diagnosis and treatment of primary testicular tumors in children. Methods Thirty twe patients who underwent treatment of primary testicular tumors in children between 5 months and 12 years from 1993 to 2003 were retrospectively reviewed. Frozen section pathological examination during in operation was done in all the patients. Depending on it, testicle sparing surgery or radical orchidectomy was performed accordingly. Twenty patients with malignant testicular tumors under went chemotherapy after surgery. Results There was no contradiction between the findings of paraftin section pathological examination and frozen section. The average follow up period in 24 patients was 73 months (ranged from 5 months to 7 years). Four patients with yolk sac tumor died of distant metastasis of the tumor in 1 year after surgery. Others were alive without tumor for 4 months to 7 years. Conclusious Ultrasonography was valuable for the diagnosis of the primary testicular tumor. Surgery should be the treatment of first choice. It was important to send for frozen section pathology during operation. According to frozen section findings, it could be decided whether the testis could be spared, which is of importance in regard to aesthetics, psychology and function for children with benign testicular tumors. Postoperative chemotherapy was beneficial in raising surrival rate in children with malignant tumors in whom the prognosis was poor
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To investigate some rare causes of obstructive jaundice in children. Three school children with obstructive jaundice caused by uncommon causes were analyzed. Despite pre operative physical examination, B Ultrasonic and CT examinations, the diagnosis was not established. The main clinical manifestation of three patients was obstructive jaundice. Postoperative pathological examination proved that one patient was suffering from cryptococcus neoformans infection of the common bile duct, another embryonal rabdomyosarcoma of common bile duct, and the third primary hydatid cysts in the common bile duct. They were all treated with surgical removal of the lesions, followed by reconstruction of the bile duct and other adjunctive treatment with satisfactory result. The results suggest that obstructive jaundice in children may be caused by some unusual diseases. Comprehensive analysis and corresponding treatments were recommended.