Carcinoma, Hepatocellular ; surgery ; Hepatectomy ; Humans ; Liver Neoplasms ; surgery

Endoscopy ; methods ; Humans ; Neck ; surgery

The use of tyrosine kinase inhibitor imatinib in treatment of gastrointestinal stromal tumors(GISTs)has achieved a dramatic therapeutic efficacy. However,secondary imatinib resistance emerged as a clinical problem needs to be solved urgently. The underlying mechanisms of GISTs secondary resistance to imatinib may be related with secondary mutations of KIT/ PDGFRA genes,loss of PTEN gene and induction of cellular quiescence. This resulted in the adoption of new therapeutic strategies such as novel tyrosine kinase inhibitors,combined use of imatinib with downstream signaling inhibitors,KIT/ PDGFRA independent targeted inhibitors such as KIT chaperone inhibitors and aurora kinase inhibitors,as well as inducing apoptosis in quiescent GIST cells. In this article,the above-mentioned issues were summarized.

ObjectiveTo investigate the mechanism by which cyclosporine A downregulates transcription of interferon-? gene after murine orthotopic liver transplantation.Methods Orthotopic murine liver transplantation model was employed and rats were divided into 3 groups. GroupⅠ: syngeneic control (Wistar-to-Wistar); GroupⅡ: acute rejection (SD-to-Wistar). GroupⅢ: acute rejection treated with cyclosporine A (SD-to-Wistar+CsA). EMSA was employed to analyze NFAT and NF-?B DNA-binding activity of splenocytes, RT-PCR was employed to analyze IFN-? mRNA transcription intragraft on 1,3,5,7,12 day posttransplant in each group, respectively. Histopathological examination was also performed for reference.Results In comparison to groupⅠ, NFAT and NF-?B DNA-binding activity of splenocytes in groupⅡincreased significantly( P

Objective To study the role of 1,25-dihydroxyvitamin D3 in preventing allograft acute rejection in rat orthotopic liver transplantation. Method Rats receiving orthotopic liver transplantation were divided into groupⅠ: syngenic control (Wistar-to-Wistar); GroupⅡ:acute rejection (SD-to-Wistar). GroupⅢ: acute rejection treated with cyclosporine; GroupⅣ: acute rejection treated with 1,25-(OH)_ 2 D_ 3 . Liver function, rejection index and IFN-? mRNA, IL-10 mRNA expression level were monitored on d1,5,7,15,30 posttransplantation. Results Survival of recipients in group Ⅳ was significantly prolonged (vs group Ⅱ, P

Hepatocellular carcinoma(HCC)is a major cause of cancer mortality worldwide,and liver transplantation (LT)has the potential to improve the survival for patients with HCC.However,tumor recurrence after LT remains the main obstacles for long-term survival.Selection of the ideal recipients based on Milan criteria or Shanghai Fudan criteria is a key point to reduce the incidence of recurrence.C,enomics and proteomics combined with tumor specific tumor markers detection are helpful to screen out the recipients.The norms of rumor-free operation should be strictly followed intraoperatively.Preventive chemotherapy and evaluation of immune function should be considered postoperatively to reduce the risks of tumor recurrence and metastasis.

Post-transplant tumor recurrence and metastasis remain the main obstacles for long-term survival after liver transplantation (LT) for hepatocellular carcinoma (HCC). Measures to explore the HCC biological characteristics and the relationship between post-transplant immuno-suppression and tumor recurrence, to determine precisely the prognostic factors associated with post-transplant recurrence, to intervene effectively for those with high risk of recurrence, and to use individualized multimodality treatment for recurrence and metastasis may improve the therapeutic results of LT for HCC.

Objective The aim of this study was to observe the growth difference and expression of cytochrome C of skin hair follicles in neonatal mice .Methods The morphology of different skin hair follicles of neonatal mice ( postnatal day 1-9)were observed by HE staining histology and cytochrome C was detected by immunohistochemistry .Results The skin hair follicles in different parts of neonatal mice showed differences not only in morphology but also in developmental pe -riods.Hair follicle growth in the back and tail skin had a nonlinear and growing period .After the nonlinear and growing pe-riod they began to grow rapidly .The tail development was slightly slower than that on the back .The hair follicles of vibris-sae were very special , and started to develop without a stable period .Conclusions The results of morphological observa-tion and cytochrome C immunohistochemistry demonstrate that differences exist in the hair follicle morphology and develop -mental times in the skin of different parts of the body in neonatal mice .

Intracranial branch atheromatous disease (BAD) was proposed by Caplan in 1989.It has been widely studied in Japan in recent years.With the application of high-resolution magnetic resonance,BAD has become a hot topic.This article reviews the concept,etiology,pathology,diagnosis and treatment of BAD as well as its relationship with ischemic stroke.

Based on the AuNPs/Nafion composite membrane technology and immobilization of amino adenosine aptamer using carboxyl carbon nanotubes on the surface of a glassy carbon electrode, a electrochemiluminescence sensor was preparated.The sensor was characterized by cyclic voltammetry and electrochemical luminescence.The result showed that the sensor had a good stability and reproducibility.Adenosine and adenosine aptamer could form G-tetrahedral structure, leading a decrease of ECL intensity.Under the optimum experimental conditions, the relative ECL intensity showed a good linear relationship to the negative logarithm of adenosine concentration in the range of 1.0×10-11-1.0×10-7 mol/L, the linear equations was ΔIECL=-890lgC-5050 with a detection limit of 5.0×10-12 mol/L.The RSD was 2.7% in 11 times measurement of adenosine (1.0×10-10 mol/L).The recovery was 97.1%-110.0% in the determination of real adenosine sample.