Color blindness represents a group of vision disorders characterized by lack of ability to distinguish different colors.The inherited color blindness has been regarded as incurable for a long period of time.Recently,adeno-associated virus(AAV) mediated gene therapy has successfully restored cone system vision in animal models with color blindness caused by different gene mutations.These mutations are presented in human color blindness patients.It is predicted that gene therapy will become a novel treatment for these color blindness victims.In addition,a single gene transfer may achieve long-term correction of color deficiency.

HIV-1 integrase (IN) is a key enzyme for the viral replication. The protein-protein interaction (PPI) between HIV-1 IN and a cellular cofactor lens epithelium-derived growth factor (LEDGF/p75) is a validated target for anti-HIV drug discovery. In order to build the platform for screening inhibitor against PPI between IN and LEDGF/p75, the vector containing the LEDGF/p75 protein cDNA was constructed and expressed in Escherichia coli and the function of the LEDGF/p75 protein was assayed. The LGDGF/p75 encoding gene optimized according to the preference codon usage of E. coli, was synthesized and cloned into the expression vector pGEX-4T-1 to form a recombined plasmid, then transformed into host cell E. coli BL21 (DE3). The recombined clones were identified and confirmed by BamH I/Sal I digestion and sequencing, the successfully recombined plasmid in the host cell was induced by IPTG and the condition of the expression was optimized. The expressed protein was purified by the Ni2+ affinity chromatography column and SDS-PAGE was used to analyze the molecular weight and specificity. In addition, ELISA assay was used to analyze the function of the recombinant protein. The recombinant LGDGF/p75 was soluble, and expressed highly and stably in E. coli. The protein was proved to enhance HIV-1 IN strand transfer activity in vitro by ELISA. It will be helpful to build the platform of screening inhibitors against PPI between IN and LEDGF/p75.
Cloning, Molecular ; Escherichia coli ; metabolism ; HIV Integrase ; metabolism ; HIV-1 ; physiology ; Humans ; Intercellular Signaling Peptides and Proteins ; biosynthesis ; Protein Binding ; Virus Replication

Objective To analyze of the relationship between level of anxiety and depression before surgery and anus exhausting time for patients after gynecological abdominal surgery.Methods A descriptive study was conducted with a survey of 100 cases of patients with gynecological abdominal surgery where the level of anxiety and depression before surgery and post-anus exhausting time were analyzed to explore the correlation between them.Results In the 88 valid questionnaires,the incidences of stress and anxiety before surgery were respectively 38.64％(34/84) and 19.32％(17/88) and the average anus exhausting time after surgery was (44.55 ± 13.90) hours;the anus exhausting time of anxious patients was significantly longer than that of non-anxious patients [(48.35±12.84) hours vs.(42.50±14.13) hours,t=-2.12,P＜0.05] and bivariate Logistic regression analysis suggested that preoperative level of anxiety had a significant effect on anus exhausting time after surgery.Conclusions Stress,anxiety and other negative emotions can affect anus exhausting time after surgery and level of anxiety could be used as one predictor of the delay of anus exhausting time after surgery.

A sequential extraction procedure has been proposed for the evaluation of the speciation of heavy metals including Cd,Cu,Pb and Zn in sediments from mariculture area,and the speciation of heavy metals was separated and defined as acid soluble fraction,reducible fraction,fraction bound organic matter,fraction bound sulfides and residual fraction. Matrix effects of high salinity on the determination of heavy metals in sediments were eliminated by matrix matching and internal standard methods when inductively couple plasma optical emission spectroscopy (ICP-OES) and mass spectroscopy (ICP-MS) were used,respectively. The results showed that the measured values of marine sediment reference materials were consistent with the standard values when the digestion solutions were determined after dilution. The extraction results of the prepositional extraction procedure and European Community Bureau of Reference Program (BCR) procedure were compared and the selectivity of extractants was investigated. The preliminary studies indicated that this sequential extraction procedure was applicable for evaluating the speciation of heavy metals in sediment with organic substances pollution and eutrophication,especially for fraction bound organic matter and fraction bound sulfides.

Objective To investigate the diagnosis and the effect of microsurgery in patients with acute spontaneous spinal epidural hematoma (ASSEH). Method Five patients with ASSEH treated with microsurgery and confirmed pathologically were retrospectively analyzed. Results The main clinical presentations were root pain and palsy. The main manifestations of MRI were long-segment epidural lesion of high intensity in T1 and T2-weighted images without enhancement. With the microsurgery system, laminectomy via posterior approach and hematoma removal were successfully undergone with full recovery in all cases. Conclusions MRI assisted with the main clinical symptoms may aid preoperative diagnosis in symptomatic ASSEH. Microsurgery is an effective method for treating ASSEH. Postoperative (rather than preoperative) spinal DSA is advantageous for exclusion of spinal vascular malformation in treating ASSEH.

Abstract: Objective　To investigate the clinical manifestations, diagnosis, treatment and prognosis of COVID-19-associated multisystem inflammatory syndrome in children (MIS-C) with multisystem organ failure, and to analyze the differences between the syndrome resembling Kawasaki disease and Kawasaki disease. Methods We report a case of child diagnosed with SARS-CoV-2 infection who developed MIS-C with multi-organ failure. Literature was reviewed to further discuss clinical symptoms, diagnosis, treatment, and prognosis of MIS-C. Results The patient 's condition progressed rapidly and was severe, with acute kidney injury at admission, presenting with urine output of 0 mL in 8 hours, serum creatinine of 675.1 μmol/L, urea nitrogen of 38.2 mmol/L, creatine kinase 4 932 U/L, along with continuously elevated serum amylase, peaking at 5 809.7 U/L, aspartate aminotransferase of 995 U/L, alanine aminotransferase of 240 U/L, and frequent vomiting. The patient was categorized as critically ill. The confirmed patient with MIS-C was managed in pediatric intensive care units (PICU), received early continuous blood purification, jejunal tube feeding, and combined treatment with intravenous methylprednisolone pulse and human immunoglobulin for intravenous injection (IVIG), resulting in complete recovery and discharge. Through literature review, it can be analyzed that MIS-C is systemic inflammatory response characterized by multi-organ dysfunction from a cytokine storm, which differentiates it from Kawasaki disease characterized by acute systemic vasculitis triggered by infectious factors, ultimately leading to cardiovascular accidents as the main cause of death.Conclusions When fever (≥38 ℃) persists for at least 24 hours, accompanied by high inflammatory symptoms and dysfunction in two or more systems, requiring intensive care treatment, and there is evidence of SARS-CoV-2 infection, MIS-C should be diagnosed early, and intervention and treatment should be initiated promptly to achieve favorable outcomes.

OBJECTIVETo observe the changes of the mechanical pain threshold in the rat model of autoimmune prostatitis, explore the mechanism of autoimmune prostatitis pain and offer some animal experimental evidence for the drug therapy of the condition.

METHODSTwenty male Wistar rats weighing 180 - 220 g were divided into a model and a control group. The autoimmune prostatitis model was established by subcutaneous injection of an extract of male rat prostate glands (RPG) at 60 mg/ml in Freund's complete adjuvant (FCA) and pertussis-diphtheria-tetanus vaccine at 0 and 30 days, respectively. Mechanical tactile hyperalgesia was measured once a week using Von Frey Filaments from the beginning of the study. At 8 weeks after modeling, the rats were sacrificed and the prostate tissues harvested for observation of histomorphological changes by HE staining.

RESULTSHE staining revealed different degrees of benign prostatitis in the model rats. Compared with the controls, the mechanical pain threshold in the model rats was significantly decreased with the increased time of modeling, from (65.52 +/- 6.27) g at 0 week to (23.67 +/- 4.09) g at 8 weeks (P < 0.01). Statistically significant differences were found in the variation trend at different time points between the two groups (P < 0.01).

CONCLUSIONAutoimmune prostatitis models were successfully established in rats and hyperalgesia was induced after modeling.

Animals ; Autoimmune Diseases ; physiopathology ; Disease Models, Animal ; Male ; Pain Threshold ; physiology ; Prostatitis ; immunology ; physiopathology ; Rats ; Rats, Wistar

According to medicine high special educational reform’s mentality,we have extracted the knowledge points closely related to basic medical curriculum and the nursing spe-cialty,integrated the basic medical curriculum as "the basis of medical morphology"and"basic medical functions"and have it implemented in the nursing specialty in the three-year program.By doing so,we have gained some experience and provide practical basis for further integration of basic medical courses.

Objective To study the construction of training bases for three tumor therapies. Methods Eight training bases in six third-level first-class hospitals with score of technology assessment higher than 90 were investigated. Results There were good hardware in all training bases and qualified teaching staff in six of them. Annual operative quantity of hyperthermia and radioactive particles implantation technology of all training bases were up to the standard , while the coincidence rate of ablation technology was 80%. Besides , quantity of ablation technology and radioactive particles implantation technology trainees participated in during training met the standard, but that of hyperthermia not. There were significant difference in theory and operational test results before and after training (P < 0.01). Conclusions Management system, operative quantity and teaching staff construction need to be improved. Clinical skills training and standardized training assessment should be strengthened in base construction.

0. 05). Conclu-sion The THT and THC have bioequivalence.