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.

The astaxanthin synthesized by Phaffia rhodozyma is a commercially valuable carotenoid. Related advances in the biosynthetic pathway of astaxanthin and the regulatory mechanisms of biosynthesis in Phaffia rhodozyma in recent years were reviewed.The innovating research aspects in related fields in China were also proposed.

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.

AIM: To investigate the role of NFAT in cyclosporine A downregulating IFN-? gene transcription after liver transplantation. METHODS: Rat orthotopic liver transplantation model was employed and 3 groups of experiments were performed in this study. GroupⅠ: syngeneic control (Wistar-to-Wistar); GroupⅡ: acute rejection (SD-to-Wistar). GroupⅢ: acute rejection treated with cyclosporine A intramuscularly (SD-to-Wistar+CsA). EMSA and RT-PCR were used to analyze NFAT activity of splenocytes and IFN-? gene transcription intragraft of recipients with or without CsA treatment after liver transplantation. Histopathological assessment was also performed for reference. RESULTS: No noticeable rejection was detected in GroupⅠ while only low level of IFN-? mRNA transcription and faint NFAT activity were measured. In contrast, a marked rejection reaction was demonstrated from day3 postoperation in GroupⅡ. IFN-? mRNA transcription was significant and NFAT activity was intensive. In comparison to GroupⅡ, rejection grade in Group Ⅲ significantly decreased (P

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.

Circulating DNA is cell-free DNA existing in plasma or serum. It has already been verified that circulating DNA of cancer patients is derived from tumor cells. Therefore, it is of great value to detect the changes in the quantity and quality of the circulating DNA in cancer patients for early diagnosis and prognosis. The advantages of the detection of circulating DNA such as micro-trauma, convenient access to samples, possibility of continuous and dynamic monitoring, make it a promising tumor mark. This review recapitulates the application of circulating DNA analysis in hepatocellular carcinoma patients for diagnosis and prognosis.

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 To explore epidemic characteristics and trend of livestock brucellosis in Zibo,and to provide a scientific basis for development of prevention strategies to brucellosis.Methods Epidemiology statistical analysis and forecast was made based on related information such as the active immunization data of human brucellosis,the infection data between people and livestock,and the active immunization data among livestock over the years since 1954.Results From 1954 to 2011,37 years had brucellosis cases reported in Zibo City,with accumulative reports of 380 cases,and the average incidence rate was 0.2512/100 000,distributed in 118 villages 56 counties 3 towns 5 districts of the whole city.From 1954 to 1988,only 14 years had brucellosis cases reported,with accumulative reports of 94 cases,and the average incidence rate was 0.1573/100 000.From 1989 to 2011,each year had brucellosis cases reported,with accumulative reports of 283 cases,and the average incidence rate was 0.3158/100 000,of which the highest incidence was in 2011 (45 cases).From 1958 to 2011,there were a total of 140 154 livestock went through serology monitoring,1162 positives,and the positive rate was 0.83％,while the total immunization number of sheep was 884 900,of which 28 years did not carry out immunization work.Conclusions The incidence rate has decreased year by year since the seventies of last century.But the epidemic is on the rise since 1989,while new epidemic areas are emerging and the history affected areas are still serious,therefore the brucellosis prevention and control situation is still grim.