Antiviral Agents ; therapeutic use ; Guanine ; analogs & derivatives ; therapeutic use ; Hepatitis B ; immunology ; Hepatitis B Antibodies ; immunology ; Hepatitis B Surface Antigens ; immunology ; Humans ; Reproducibility of Results ; Stem Cell Transplantation ; Stem Cells ; Tissue Donors

Anthocyanins are a ubiquitous group of water-soluble plant pigments of the flavonoid family, with anticancer property through HER-2 signaling pathway. Nowadays, molecular docking plays an important role in exposing the active sites and obtaining the bioactive conformation involving protein-ligand interactions. According to the crystal structure of HER-2 kinase domain and 12 main antitumor compounds of anthocyanins as well as ATP, a molecular docking study was performed by MVD program. All 12 compounds could bind to the same cavity of HER-2 kinase domain by high affinity (MolDock Score < -105 kJ/mol for anthocyanidins, < -130 kJ/mol for anthocyanidins-glc), where hydrophobic force and hydrogen bond played key roles. Additionally, this cavity overlapped with ATP binding (MolDock Score = -161 kJ/mol) domain; the binding of anthocyanins presumably interfered the H bond formation between ATP and HER-2. These results indicate that anthocyanins may competitively bind to ATP binding site in HER-2 kinase domain by suppressing HER-2 activation and downstream signaling cascade. This may provide useful theoretical instruction for the molecular mechanism of HER-2 kinase activity inhibition by anthocyanins in cancer prevention and treatment.
Anthocyanins ; chemistry ; Catalytic Domain ; Hydrogen Bonding ; Hydrophobic and Hydrophilic Interactions ; Molecular Docking Simulation ; Phosphorylation ; Protein Interaction Domains and Motifs ; Receptor, ErbB-2 ; chemistry

Objective To evaluate the effects of sepsis on pharmacodynamics of rocuronium in rats.MethodsForty SD male rats weighing 250-350 g were randomly divided into 3 groups: control group(group C,n =10) ; sham operation group(group S,n =10)and sepsis group (group Sep,n =20).Cerum was ligated and perforated to produce sepsis model in Sep group,rocuronium 3.81 mg/kg was intravenously injected at 6 or 16 h after operation,each time contains 10 rats.Cecum was not ligate and perforate in group S,but rocuronium 3.81 mg/kg was intravenously injected at 6 h after operation.Onset time,TOF no reaction period,duration of peak effect,clinical duration,totel duration,time for recovery of T1 to 10％,25％,50％,75％,90％ and recovery index were recorded by RM6240B signal acquisition and processing system.ResultsCompared with groups C and S,onset time was significantly prolonged,TOF no reaction period,duration of peak effect,clinical duration,total duration and time for recovery T1 to 10％,25％,50％,75％,90％ and recovery index were shortened in group Sep ( P ＜ 0.05).Onset time was significantly prolonged,time for recovery of T1 to 75％ was shortened when rocuronium injection at 16 h after operation as compared with that at 6 h after operation in group Sep( P ＜ 0.05).ConclusionSepsis can attenuate the effects of nondepolarizing neuromuscular blocker rocuronium,the degree is related to the stage of sepsis.

Objective To summarize the clinical experience of surgical treatment for the congenital coronary artery anomaly.Methods 15 patients with coronary artery anomaly,congenital coronary artery fis-tulas were 11 patients,including 1 patient associated with Fallot,5 patients underwent ligation of isolated fistula and 1 patient's fistula was performed tangent suture though off-pump cardiopulmonary bypass,4 pa-tients'fistulas were repaired by endocardiac way and 1 patient was mended through dissection of fistula under Oil-pump cardiopulmonary bypass.Anomalous origin of the left coronary artery from pulmonary artery were 4 patients and 1 patient associated with rheumatoid valve disease.Operative methods included ligation of left circumflex (1 case),anastomosis of left subclavian artery-left artery-left main (1 case) and transplantation of left main(2 cases).Results There was 1 death becaused severe low cardiac output syndrome,and the there was good prognosis and no clinical symptoms found in 14 patients during follow-up.Conclusion The feasible operation for the coronary artery anomaly should be performed as early as possible once diagnosed correctly.

Background Posterior chamber phakic intraocular lens implantation is a safe and effective method for correction of high myopia.Petacam-assisted observation of the intraocular lens position in the eye after surgery,provides a good way for the evaluation of operation safety.Objective This study was to evaluate the security and effectiveness of posterior chamber (phakic) implantable contact lens (ICL) implantation for high myopia.Methods Twenty-five eyes of eighteen high myopia patients who received ICL implantation were retrospectively analyzed from March 2009 to September 2012.The mean preoperative spherical equivalent (SE) of the patients was (-17.52 ± 1.73) D and the cylinder was (-0.75 ± 0.28) D.The clinical effective indexes included preoperative and postoperative uncorrect visual acuity (UCVA) and best correct visual acuity (BCVA),SE,intraocular pressure (IOP),corneal endothelial cell number and percentage of corneal endothelial hexagon cells.In addition,Pentacam analysis system was used to compare the anterior chamber depth,anterior chamber angle and space between crystal lens and ICL between before and 6 months after operation.Written informed consent was obtained from each patient before any medical procedure.Results ICL was successfully implanted in all the 25 eyes.UCVA was 1.47 ±0.26 and 0.26±0.15 respectively before and after operation,showing a significant difference between them (t =21.71,P =0.00).SE,corneal endothelial cell number and percentage of corneal endothelial hexagon cells were significantly lower than those before operation (SE:t =-48.60,P =0.00 ; corneal endothelial cell number:t =13.07,P =0.00 ;percentage of corneal endothelial hexagon cells:t =10.79,P＜0.05).Anterior chamber angle was (25.02± 4.77)° 6 months after operation and was smaller than (38.43±4.04)° before operation (t=15.32,P=0.00).No significant differences were found in IOP and anterior chamber depth between before and after operation (IOP:t =-1.57,P =0.13 ; anterior chamber depth:t =1.46,P =0.16).The spaces between crystal lens and IOL was (363.33± 44.37) μm 6 months after operation,with a significant decline in comparison with (542.17±39.46) μm 1 week after operation (t =20.86,P =0.00).Glare sense appeared in 2 eyes after operation.Conclusions The results indicated that ICL implantation can retain the natural accommodation of lens.ICL implantation appears to be an effective and safe approach to high myopic eyes.However,the changes of corneal endothelial cells after operation should be payed more attention.

Objective:To systematically evaluate the qualitative studies on the decision dilemma of blood glucose management during pregnancy in patients with gestational diabetes mellitus, so as to provide reference for the subsequent formulation of intervention strategies.Methods:The qualitative studies on the decision dilemma of blood glucose management during pregnancy in patients with gestational diabetes mellitus in the Cochrane Library, CINAHL, EMbase, PubMed, PsycINFO, ProQuest, Web of Science, China National Knowledge Internet, Wanfang, VIP and Chinese Biomedical Database were searched from inception to May 2022. The JBI Critical Appraisal Tool for qualitative studies in Australia (2016) was used to evaluate the literature quality, and research results were summarized and integrated by integrating methods.Results:A total of 13 studies were included, 56 themes were extracted, and they were summarized into 9 categories, forming 3 integrated results as following, lack of personalized and professional information on blood glucose management, worring about the influence of blood glucose management on the health of mothers and children, conflict between daily life and blood glucose management plan.Conclusions:Health care workers should provide gestational diabetes mellitus patients with adequate personalized professional information support on blood glucose management to facilitate scientific decision-making during pregnancy, and also analyze the benefits and risks of different decisions for patients to help them make the best decision and strengthen their external support system to help them implement blood glucose management decisions.

BackgroundHuman retinal gliocytes play an important role in proliferative diseases,which are the basis of in vitro studies.Researchers have cultured human retinal gliocytes in the past.In our study,we found that the cells we cultured presented a unique shape different from those by other researchers.ObjectiveThis study was to design to produce a new culture and purification method for retinal gliocyte in vitro.Methods Retinal tissue was isolated from human eyeballs and digested using the two-step digestion method (2％ pancreatin and 0.133％collagenase Ⅵ) to harvest the retinal glio cytes.The cells were collected and cultured in endothelial cell-targeted nutrient culture containing 10％ fetal calf serum and supplemented with β-endothelial cell growth factor (ECGF) and sodium heparin,and the culture dishes were coated with fibronectin(FN) to promote the attachment of retinal gliocyte.During the culturing process,the gliocytes were identified by the observation of morphological characteristic and regular histological examination.The identification of the cells also was performed by immunochemistry targeting glial fibrillary acidic protein (GFAP),Vimentin,neuron specific enolase ( NSE ),S-100,CD34,and Ⅷ factor.Results Retinal gliocytes were isolated successfully from the human retina by the two-step digestion method.Primary cultured cells attached after 72 hours and achieved confluency between day 9 and 10 that were aligned petaliform in shape.Regular histological examination after H&E staining showed blue cell nuclei and light red cytoplasm.The target cells presented with strong responses for GFAP and Vimentin and no response for NSE,S-100,CD34 and Ⅷ factor.ConclusionsLarge amount of purified human retinal gliocytes can be obtained by two-step digestion and cultured in endothelial cells-targeted culture medium supplemented with β-ECGF and sodium heparin in plates coated with FN.The cultured cells expressed markers for retinal gliocytes.However,specific features of these cells remain to be further elucidated.

Objective To study the cell toxicity of thrombin in astrocytes in vitro and the protective effect of hirudo extract liquid (HEL) on the injured astrocytes. Methods Astrocytes were isolated from Wistar rats' cerebral cortex and cultured in vitro, and observed under a phase contrast microscope for growth status. Cell activity was measured with MTT assay. The survival of astrocytes was investigated after exposed to a selected concentration of thrombin ranging from 0.1 to 100 U/mL or to HEL ranging from 0.25 to 4 mg/μL by observing cell morphology under an inverted phase-contrast microscope and measuring the lactate dehydrogenase (LDH) activity (a marker of cell death) in cell supernatant. Expressions of HSP70 and TGFβ-1 protein in astrocytes were investigated by immunohistochemistry. Results (1) Thrombin (1-100 U/mL) had toxicity on astrocytes in vitro in a dose-dependent manner (F=118.65, P=0.000). (2) HEL (0.25-4 mg/μL) could significantly reduce the cell toxicity of 10 U/mL thrombin in astrocytes (F=156.08, P=0.000). With the increasing concentration of HEL, the protection of HEL was accordingly enhanced, and it even increased the expressions of HSP70and TGFβ-1. Conclusions HEL could accelerate the proliferation of astrocytes, enhance the expressions of HSP70 and TGFβ-1 protein, so as to significantly depress the cell toxicity of thrombin to astrocytes.

OBJECTIVETo establish a new and rapid GeXP based multiplex PCR assay for the detection and typing of human papillomavirus 6, 11, 31, 33 and 52.

METHODSNucleotide sequences of HPV6, HPV11, HPV31, HPV33 and HPV52 from NCBI were obtained and compared. Genotype-specific primers were then designed and the sensitivity and specificity of multiple PCR assay was evaluated. Optimized assay was further validated with 30 clinical specimens collected from the cervical secretions of patients.

RESULTSA GeXP based multiplex PCR was developed for sensitive detection and reliable differentiation of five HPV genotypes (HPV6, 11, 31, 33 and 52),

CONCLUSIONA GeXP based multiplex PCR assay is demonstrated to be a new and rapid technique for simultaneous detection and typing of 5 different human papillomaviruses.

Adult ; Female ; Humans ; Middle Aged ; Papillomaviridae ; classification ; genetics ; isolation & purification ; Polymerase Chain Reaction ; methods

OBJECTIVETo observe the change in vital signs and arterial blood gas in Lipopolysaccharide (LPS)-injected heat exposed rats.

METHODSMale pathogen-free Wistar rats were randomly assigned to the following groups: saline-injected normothermic control (C-Group), saline-injected heat exposed (H-Group), LPS-injected normothermic control (L-Group), LPS-injected heat exposed (HL-Group). Rectal temperature (Tr), heart rate (HR), mean arterial pressure (MAP), arterial blood gas were continually monitored.

RESULTS(1) The rats in HL-Group displayed significantly high values of Tr (43.04 degrees C +/- 0.11 degrees C) and HR [(660 +/- 42) beats/min] and low values of MAP [(49.0 +/- 3.5) mm Hg] compared with C-Group. There was a significant difference in the values of Tr, HR, and MAP between HL-Group and L-Group and in the values of HR and MAP between HL-Group and H-Group. (2) The values of PaO(2), HCO(3)(-), PaCO(2) were significantly lower than those in C-Group at 40 min after LPS-injected heat stress. At 120 min, the PaO(2) [(11.59 +/- 1.11) kPa], HCO(3)(-) [(10.42 +/- 1.06) mmol/L], PaCO(2) [(2.82 +/- 0.81) kPa] in HL-Group were significantly lower than those in L-Group. A significant difference in the values of HCO(3)(-) and PaCO(2) between HL-Group and H-Group was also observed.

CONCLUSIONLPS-injected heat stress primes the rat to advance and augment the change in vital signs, arterial blood gas, and systemic inflammatory response syndrome.

Animals ; Blood Gas Analysis ; Blood Pressure ; physiology ; Body Temperature ; physiology ; Heart Rate ; physiology ; Heat Stress Disorders ; blood ; physiopathology ; Lipopolysaccharides ; toxicity ; Male ; Random Allocation ; Rats ; Rats, Wistar