Objective To investigate the effects of polysaccharide sulfate(PSS)on the growth of vascular endothelial cell cultured in vitro and the adhesion of vascular endothelial cell to polymorphonuclear neutrophils(PMN).Methods ECV-304,a kind of human umbilical vein endothelial cells,was cultured in vitro with different concentrations of PSS(0,50,100,150,200,250 g?mL-1),the growth of ECV-304 was observed by means of MTT.Hypoxia/ reoxygenation(H/R) model of ECV-304 was established,the adhesion rate of PMN from patients with cerebral infarction to cultured ECV-304 was detected with or without treatment of PSS and H/R.Results The growth of ECV-304 in PSS-treated subgroups(final concentrations: 50,100,150,200 g?mL-1) were much better than in non-PSS subgroup,especially in subgroup with PSS final concentration of 100 g?mL-1.The adhesion rate of cultured ECV-304 to PMN from patients with cerebral infarction was higher significantly than that from the healthy subject,which was increased when ECV-304 being treated with H/R.The adhesion rate of cultured ECV-304(whether treated with H/R or not) to PMN was decreased significantly when ECV-304 being treated with PSS(100 g?mL-1).Conclusion The experiments in vitro showed that PSS could promote the growth of cultured ECV-304 and decrease the adhesion rate of H/R ECV-304 to PMN.

AIM: To investigate the significance and changes of p14 ARF gene in gastric cancer.METHODS: The tumors and gastric tissues neighboring carcinoma from 48 patients with gastric cancer were studied. The homozygous deletions, mutations, methylation of the CpG islands, and mRNA expression of p14 ARF gene were assessed by PCR, PCR-SSCP, PCR based methylation assay, and RT-PCR.RESULTS: ①The homozygous deletion rate of p14 ARF was 31 3% (15/48), and no homozygous deletions were examined in all the gastric tissues neighboring tumor. ②There were no point mutations of p14 ARF in 33 gastric cancers without homozygous deletion and in the matched gastric tissues adjacent to tumor. ③Methylation rate of the CpG islands of p14 ARF was significantly higher in gastric cancers(47.9%, 23/48) than that in gastric tissues neighboring cancer (4.2%, 2/48)( P

Objective:To evaluate the clinical effect of ureteroscopic holmium laser Iithotripsy for treatment of upper ureteral calculi. Methods:The clinic data of 52 cases of upper ureteral calculi treated by ureteroscope with holmium laser lithotripsy were retrospectively analyzed. There are 2 cases of bilateral upper ureteral calculi, and the total number of left upper ureteral calculi was 30, and the right side of 24. The size of the stones were (0.4～1.7) cruX (0.6～2.0) cm. Resuits:The overall successful operation rate for all upper ureteral calculi stones in single procedure was 98.1% (53/54), except 1 due to ureteral stenosis converted to open surgery. The average operation time was about 28 min(17～65 min). Fellowed up after one month, one-time stone-free rate was 90.6%(48/53), 5 eases of patients with residual calculi re-tained double-J tube and performed extracorporeal lithotripsy. Fellowed up after three months, ipsilateral hydronephrosis in all patients was significantly alleviated. Conclusions: Treatment of upper ureteral calculi by ureteroscopie holmium laser lithotripsy is safe and effective, which could be preferred used as endoscopic treatment of upper ureteral calculi.

We studied the function and mechanism of miR-24 in regulating beta-like globin gene expression. We first detected the expression of miR-24 during erythroid differentiation and also detected the globin gene expression in miR-24 overexpressing K562 cells through q-PCR. Dual-luciferase reporter assay and Western blotting were used to identify target genes of miR-24. "Rescue experiment" was further used to investigate the regulation of miR-24 on globin gene expression whether depending on targeting Sp1 or not. We found that miR-24 increased during hemin-induced K562 cells and EPO-induced HPCs (hematopoietic progenitor cells) erythroid differentiation. Overexpression of miR-24 in K562 cells promoted the epsilon- and gamma-globin gene expression during hemin-induced erythroid differentiation through targeting the negative globin regulator Sp1. These results suggested that miR-24 can improve the expression of beta-like globin gene through targeting Sp1.
Cell Differentiation ; Gene Expression Regulation ; Hematopoietic Stem Cells ; metabolism ; Humans ; K562 Cells ; MicroRNAs ; genetics ; Sp1 Transcription Factor ; genetics ; epsilon-Globins ; genetics ; gamma-Globins ; genetics

Objective:To explore the application value and surgical experience of neuroendoscopic resection for pediatric patients with cerebellar tumors.Methods:This was a case series study.The clinical data and outcomes of 30 pediatric patients with cerebellar tumors treated through neuroendoscopic surgery in the Department of Neurosurgery, the Guizhou Hospital of Shanghai Children′s Medical Center and Guizhou Provincial People′s Hospital from January 2021 to January 2024 were retrospectively analyzed.Results:Twenty-six patients underwent total resection, 3 patients underwent subtotal resection, and 1 patient underwent biopsy.Postoperative pathological findings showed 9 cases of medulloblastoma, 3 cases of ependymoma, 17 cases of astrocytoma (5 cases of World Health Organization Grade Ⅰ, 3 cases of Grade Ⅱ, and 9 cases of Grade Ⅲ), and 1 case of cerebellar benign lesion.During the perioperative period, malignant arrhythmia occurred and induced death in 1 case, cerebellar mutism occurred in 12 cases, and ataxia occurred in 22 cases.During the 1-36 months of follow-up, 2 cases developed communicating hydrocephalus at the 2 nd and the 6 th month, respectively, and improved after ventriculoperitoneal shunt; cerebellar mutism was relieved to varying degrees after an average postoperative follow-up period of (115±23) days(46-194 days), and ataxia was alleviated after an average postoperative follow-up period of (127±42) days(27-173 days).Tumors relapsed in 5 cases during the last follow-up. Conclusions:Neuroendoscopy provides an alternative to the microscope for experienced operators to achieve the surgical exposure requirements during the resection of pediatric cerebellar vermis tumors.

BACKGROUNDHypertension (HTN) is a very prevalent public health problem and as the population ages, cognitive impairment (CI) is also going to be a public health burden. However, the relationship between hypertension duration and cognitive function declination worldwide is still unknown. The aim of the study was to investigate the effects of HTN duration on CI in Chinese population.

METHODSAt baseline, 1 386 HTN patients and 293 normotensive (NT) people were enrolled. The HTN patients were further divided into four subgroups (duration of HTN <6 years, 6-10 years, 11-20 years, and >20 years) according to the HTN duration and were screened for cognitive function with neuropsychological tests including mini-mental-state-examination (MMSE) and clock-drawing-test (CDT) in comparison with the NT group.

RESULTSMore HTN patients had CI (45.3%) than NT subjects (30.4%), and increased with HTN duration (P < 0.000 1). Compared with the scores of MMSE and CDT in the NT group, the declines were higher in the HTN patients (P < 0.000 1), and in the four HTN subgroups, both MMSE and CDT scores fall when the HTN duration increased (P < 0.05). Furthermore, in the HTN population without CI, the trend in alteration of CI was relatively mild but still existed (P < 0.05).

CONCLUSIONPeople with HTN are more likely to have CI and the possibility and aggravation increases the prolongation of HTN duration, both in amnesic and nonamnesic function.

Adult ; Aged ; Aged, 80 and over ; Asian Continental Ancestry Group ; Cognition ; physiology ; Cognition Disorders ; etiology ; Cross-Sectional Studies ; Female ; Humans ; Hypertension ; complications ; Male ; Middle Aged

ObjectiveTo analyze and construct a curriculum framework and content system of the vocational college rehabilitation therapy technology exercise therapy technology course, based on World Health Organization (WHO) International Classification of Functioning, Disability and Health (ICF) and rehabilitation competency framework (RCF). MethodsUsing educational psychology and curriculum theory, and applying the ICF and RCF, the curriculum system for rehabilitation therapy technology curriculum system was constructed. A systematic analysis of the existing exercise therapy technology course content was conducted to identify the core elements related to ICF and RCF. Through the design of course modules, these core elements were integrated into theoretical courses, skills training and practical courses to form a comprehensive curriculum structure. ResultsCombining the ICF and RCF, a curriculum system for rehabilitation therapy technology curriculum system was constructed, covering theoretical courses, skills training and practical courses. This system enabled students to systematically master rehabilitation assessment and treatment techniques and develop clinical decision-making abilities and interdisciplinary collaboration skills. The introduction of the ICF framework allowed students to acquire knowledge, skills and abilities in the field of exercise therapy technology through the course. Developing competency-oriented courses based on RCF framework helped students develop comprehensive professional competencies through learning. ConclusionBy integrating the ICF and RCF, a curriculum for exercise therapy technology course in vocational colleges has been constructed. Based on the ICF framework, the content of the course has been aligned with the bio-psycho-social theory of functioning and health, covering three levels: body function, activity and participation, and environmental factors. The curriculum content should include the analysis, assessment and intervention of these functioning. RCF provides a theoretical structure and methodology for developing competency-oriented courses. When designing the course modules, teaching objectives have been established based on the core competency framework, aiming to develop students' comprehensive professional competence and professionalism through theoretical courses, practical training and clinical internships.

【Objective】 To explore the relationship between hidden blood loss （HBL） and risk factors in percutaneous endoscopic interlaminar discectomy （PEID）. 【Methods】 We retrospectively analyzed 113 patients （67 males and 46 females， aged 21-71 years old） with lumbar disc herniation （L5-S1 level） who underwent PEID with complete clinical data in the Department of Spinal Surgery of Subei People’s Hospital Affiliated to Yangzhou University from January 2018 to August 2020. The collected data included general patient indicators （age， body mass index and gender）， underlying diseases （hypertension and diabetes）， laboratory tests （prothrombin time， activated partial thromboplastin time， fibrinogen， hematocrit and hemoglobin level）， imaging related parameters （grade of intervertebral disc degeneration， interlaminar space height and soft tissue thickness of interlaminar approach）， intraoperative significant blood loss and operation time. According to the Gross formula， total blood loss and HBL during operation were calculated. And the risk factors of HBL was analyzed. 【Results】 The total perioperative blood loss was （394.85±130.50） mL， and HBL was （337.09±124.98） mL which accounted for 85.4% of the total blood loss. Multivariate linear regression analysis showed that operation time （P<0.001） and disc degeneration grade （P=0.020） were independent risk factors of HBL. 【Conclusion】 HBL is the main cause of blood loss during PEID， and operation time and disc degeneration grade are independent risk factors that affect the amount of HBL.