Pancreatic acinar cell death modality is a significant factor which determines the course and prognosis of acute pancreatitis (AP).The severity of AP is positively correlated with acinar necrosis,while negatively correlated with acinar apoptosis.Adenosine triphosphate (ATP) level is the key to control the manner of death,and acts as a switch during the conversion of necrosis and apoptosis in a variety of pathophysiological settings:low levels of ATP can accelerate cell necrosis and high levels of ATP might promote apoptosis.Hypoxia inducible factor 1 (HIF-1) is a highly expressed transcription factor in anoxic conditions which can effectively regulate cell energy metabolism and play an important role in regulating cell death and inflammatory injury.Therefore,this review aimed to provide a reference about better understanding of the pathogenesis and new therapeutic targets of HIF-1 in AP.

Aim To investigate the anticancer activity and the mechanism of the apoptosis induced by Ama-ranthus spinosus L. extract ( ASE ) in human hepatic carcinoma cell line HepG2 . Methods Alamar blue assay was used for detecting the influence of ASE on the proliferation of the cancer cells. The morphological changes of cells were observed under inverted micro-scope and Hoechst 33258 stainning. The apoptosis of HepG2 cells was detected by flow cytometry. Western blot and caspase-3 activity kit were used to detect the protein expression in HepG2 cells. The specific inhibi-tor of caspase-9 and caspase-3 ( Z-LEHD-FMK and Ac-DEVD-CHO) was used to validate the signal transduc-tion pathyway. Results The results indicated that the cell proliferation was inhibited by ASE,especicially the HepG2 cells. The HepG2 cells showed obvious apop-totic characteristics. Flow cytometry analysis further validated the apoptosis of HepG2 cells. The expression of Bcl-2 and survivin was downreagulated in HepG2 cells treated with ASE, and Bax, caspase-9, caspase-3, Apaf-1 and PARP were upregualted. Besides, the caspase-3 activity was also increased. Z-LEHD-FMK and Ac-DEVD-CHO significantly increased the cell vi-abilty of HepG2 cells induced by ASE. Conclusion These results confirm that ASE induces the apoptosis of HepG2 through mitochondria-mediated pathway.

Recurrent pancreatitis ( RP) can be further divided into two items , including recurrent acute pancreatitis ( RAP ) and recurrent chronic pancreatitis ( RCP ) .In recent years, with the rising incidence of pancreatitis , the incidence of RP has also been increased .During the development of pancre-atic diseases, RP may serve as a transitional disease .Thus, this article reviewed the latest research progress on RP in order to discuss its role in the development of the related pancreatic di-seases and the effects on clinical prognosis , and provide a refe-rence for preventing and treating RP and even cancer .

To develop the stable transformants of the silkworm (Bombyx mori) BmN cells that could continuously express the exogenous gene based on a non-transposon vector, an expression cassette containing human granucyto-macrophage colony-stimulating factor (hGM-CSF) gene driven by ie-1 promoter from B. mori nucleopolyhedrovirus was inserted into pIZT-V5-His to form a recombinant vector pIZT-IE-hGM-CSF, followed by transfecting the constructant into BmN cells, the stable ie-hGM-CSF cell lines were obtained after being selected with Zeocin. PCR result using the genomic DNA of the transformed BmN cells as template illustrated a specific fragment of ie-hGM-CSF, and Western blotting analysis using an antibody against hGM-CSF demonstrated a specific band with a molecular weight of 22 kDa in the transformed cells, meanwhile, the expression level of hGM-CSF determined by ELISA was about 2 814.7 pg in 10(6) transformed BmN cells.
Animals ; Animals, Genetically Modified ; Bombyx ; cytology ; genetics ; metabolism ; Cell Line ; Fibroins ; genetics ; Genetic Vectors ; genetics ; Granulocyte-Macrophage Colony-Stimulating Factor ; biosynthesis ; genetics ; Humans ; Recombinant Fusion Proteins ; biosynthesis ; genetics ; Transformation, Genetic

Objective To evaluate the contraception efficacy, mode of bleeding, side effects and other positive effects of drospirenone-ethinylestradiol (Yasmin) in healthy Chinese women. Methods This was a multicenter, randomized, control study of 768 healthy Chinese women who consulted about contraception. The subjects were randomized into Yasmin group (30 μg ethinylestradiol plus 3 mg drospirenone, 573 cases) or desogestrel group (30 μg ethinylestradiol plus 150 μg desogestrel, 195 cases) with the ratio of 3: 1. Each individual was treated for 13 cycles. Further visits were required at cycle 4, cycle 7, cycle 10 and cycle 13 of treatment. Weight, height, body mass index were evaluated at each visit. The menstrual distress questionnaire (MDQ) was given to the women at baseline, visit 3 (cycle 7) and visit 5 (after cycle 13). Results The values of basal features were similar between two groups (P> 0.05). The Pearl index (method failure) of Yasmin was 0. 208/hundred women year which was lower than that of desogestrel (0. 601/hundred women year). The mode of bleeding was similar between two groups after trial without showing any significant difference. According to MDQ subscale, the improvement of water retention and increasing appetite during inter-menstrual period and water retention and general well-being during menstrual period in the Yasmin group ( -0. 297, -0. 057, 0. 033, 0. 150 respectively) was more obvious than that in the desogestrel group ( - 0. 108, 0. 023, 0. 231, - 0. 023 respectively) with a significant difference (P < 0. 05 ). Some other values which improved in beth two groups, especially the improvement of breast tenderness and pain and skin abnormality in Yasmin group (18.0%, 89/494; 12. 6%, 62/494) was more distinct than that in desogestrel group (11.3%, 19/168; 5.4%, 9/168). The mean weight increased in desogestrel group (0. 57 kg) while it decreased in Yasmin group ( -0. 28 kg) with a significant difference (P < 0. 01 ). Conclusions Both Yasmin and desogestrel have good efficacy on contraception and similar modes of menstrual bleeding. Yasmin is better than desogestrel in terms of weight control and premenstrual syndrome of oral contraceptive.

Based on the character of strong promoter of the fibroin gene and high level secretion of fibroin of Bombyx mori, we amplified the promoter of heavy chain gene (Fib-H) and its downstream signal peptide sequence (FibHS) by PCR. After that, we cloned the PCR product in pBluescriptII SK (+) to form the vector pSK-FibHS and analyzed its sequence. The sequence identity was 99% comparable to that of the reported sequence by Blast on line. Then we digested pSk-Ser-DsRed-PolyA with Sal IKpn I to get DsRed-PolyA DNA fragment and subcloned it into vector pSK-FibHS to generate a transitorily secretory expression vector pSK-FibHS-DsRed-PolyA. After identified the recombinant plasmid by restriction enzyme digestion, we transfected pSK-FibHS-DsRed-PolyA into BmN cells by liposome. From the cells transfected with the recombinant vector, what the red fluorescence could be detected verified that the recombinant vector could express DsRed in BmN cells transiently. Furthermore, when silkworm had been injected with the recombinant vector pSK-FibHS-DsRed-PolyA, red fluorescence could be observed in the lumen of silk gland of silkworm. The result indicated that DsRed expressed transiently and was secreted into lumen of the silk gland. Therefore, we supposed that the cloned sequence (FibHS) possessed signal peptide bio-function. Moreover, this study would lay a foundation for the research on secretory expression of exogenous gene by silk gland bioreactor.
Amino Acid Sequence ; Animals ; Base Sequence ; Bombyx ; genetics ; metabolism ; Cloning, Molecular ; Fibroins ; biosynthesis ; genetics ; Insect Proteins ; biosynthesis ; genetics ; Luminescent Proteins ; biosynthesis ; genetics ; Molecular Sequence Data ; Promoter Regions, Genetic ; genetics

Objective:To evaluate the application of a 3D printed positioner for hip rotation center in total hip arthroplasty.Methods:From August 2015 to December 2017, 14 patients were treated by unilateral total hip arthroplasty at Department Ⅰ of Joint Surgery, Orthopaedics Hospital of Zhengzhou for avascular necrosis of femoral head or femoral neck fracture. They were 8 males and 6 females with an average age of 51.8 years (from 37 to 65 years). All their surgeries were assisted by a 3D printed positioner for hip rotation center. Postoperatively, the abduction and anteversion of acetabular cup and the hip rotation center were measured, the agreement between the hip rotation center of the affected side (O2) and the anatomical rotation center of the healthy side (O1) was assessed, and the function of the affected hip and complications were recorded at the last follow-up.Results:The 14 patients were followed up for an average of 18 months (from 6 to 24 months). The postoperative ordinates of O2 and O1 were respectively 19.36 mm±3.61 mm and 18.33 mm±3.41 mm while their abscissas 39.93 mm±2.97 mm and 39.99 mm±3.16 mm, indicating agreement between O2 and O1 ( P>0.05). The postoperative abduction and anteversion of the cup were within a normal range (39.3°±3.2°and 14.6°±1.2°, respectively). The last follow-up showed that their preoperative Harris hip scores (42.3±3.2) were significantly improved (94.3±4.7) ( t=2.873, P=0.002) and that 13 cases were rated as excellent and one as good. X-ray follow-up showed good position of their acetabular prostheses, no loosening of the cups or femoral prostheses, and no heterotopic ossification. Conclusion:A 3D printed positioner for hip rotation center can effectively assist reconstruction of the hip rotation center and accurate implantation of acetabular prosthesis in total hip arthroplasty.

Synthetic lethality is a proven effective antitumor strategy that has attracted great attention. Large-scale screening has revealed many synthetic lethal genetic phenotypes, and relevant small-molecule drugs have also been implemented in clinical practice. Increasing evidence suggests that CDKs, constituting a kinase family predominantly involved in cell cycle control, are synthetic lethal factors when combined with certain oncogenes, such as

We reported a 54-year-old female patient with severe tricuspid regurgitation, who received mechanic valve in the mitral position 15 years ago. The patient’s Society of Thoracic Surgeons score was 8.27%, and was intolerant to open heart surgery, so she was recommended for transcatheter tricuspid valve replacement via right vena jugularis interna. The procedures were guided by echocardiography and X ray fluoroscopy on November 13, 2021, the prosthesis was implanted successfully, and the patient was recoved without any adverse events. After 1 month follow-up, her general condition was apparently improved.