Objective To investigate the mechanism of icariin regulating the NLRP3 inflammasome in the treatment of cerebral ischemia-reperfusion injury in rats.Methods A rat model of focal cerebral ischemia-reperfusion was induced using the thread embolism method.At 24 hours post-operation,the rats were randomly allocated into a sham operation group,model group,butylphthalide group(70 mg/kg),ICA-low dose(20 mg/kg),ICA-middle dose(40 mg/kg),and ICA-high dose(80 mg/kg)groups.The corresponding drugs were administered by gavage at 10 mL/kg once a day for 13 consecutive days.One hour after the last administration,neurological function was scored.The cerebral cortex was observed by hematoxylin-eosin(HE)staining.Expression of interleukin(IL)-1β and IL-18 in the cerebral cortex was determined by immunohistochemistry.Expression of NLRP3,ASC,and Caspase-1 in the cerebral cortex was determined by Western Blot.Results In contrast to the sham operation group,there was a notable increase in neural function scores within the model group.The ischemic area around the visible cerebral cortex showed neuron necrosis at various level or glial cell proliferation,and the number of intact neurons was significantly reduced.IL-1β and IL-18 positive cells were significantly increased.Expression of NLRP3,ASC,and Caspase-1 was significantly increased(P＜0.01,P＜0.05).After treatment with icariin,the neural function score was decreased significantly.The degree of neuronal necrosis in the peri-ischemic area was significantly reduced,and the number of intact neurons was significantly increased.IL-1 β and IL-18-positive cells were decreased significantly.Expressions of NLRP3,ASC,and Caspase-1 were significantly decreased(P＜0.01,P＜0.05).Conclusions Treatment of cerebral ischemia-reperfusion injury by icariin may be related to regulation of the NLRP3 inflammasome.

Objective : To explore the safety and effectiveness of transvaginal ischia spinous fascia fixation for pelvic organ prolapse. Methods : The retrospective analysis of 124 patients who underwent surgical treatment for stage III - IV pelvic organ prolapse was conducted. Among them , 53 cases of transvaginal ischia spinous fascia fixation (IS⁃ FF) were performed as a study group (ISFF group) while 71 cases of transvaginal sacrospinous ligament fixation (SSLF) were performed as a control group (SSLF group) . The operation time , postoperative hospitalization days , preoperative and postoperative hemoglobin values , indwelling urinary catheter time , postoperative pain scores , and the occurrence of complications were compared between the two groups , and the efficacy of the operation was objectively evaluated by using the staging method of pelvic organ prolapse (POP⁃Q) . Also the scores of the pelvic floor impact questionnaire⁃7 (PFIQ⁃7) , the pelvic floor dysfunction questionnaire⁃20 (PFDI⁃20) , and the questionnaire of quality of life 12 (PISQ⁃12) were used to evaluate the patients ′ postoperative quality of life. Results : The operation time and postoperative hospitalization days of patients in the ISFF group were less than those in the SSLF group , and the differences were statistically significant (P < 0. 05) . The preoperative and postoperative hemoglobin values , retention time of urinary catheter, postoperative pain scores , and hospitalization costs of patients in the two groups were compared , and the differences were not statistically significant. At the 3 ⁃month postoperative outpatient follow⁃up , the objective success rate was 100% in two groups. The median follow⁃up time of patients in both groups was 24 months ( 12 - 41 months) , and there were 2 cases of recurrence in the ISFF group , with a recurrence rate of 3. 77% and a subjective success rate of 96. 23% . While there were 3 cases of recurrence in the SSLF group and 2 cases of loss of visit , with a recurrence rate of 4. 34% and a subjective success rate of 95. 65% . 1 patient in the SSLF group presented with a pelvic hematoma with a diameter of about 5 cm after surgery. The hematoma disappeared after hemostasis and other symptomatic treatment. There was no organ injury or blood transfusion in both groups. Conclusion Transvaginal ischia spinous fascia fixation is a safe and effective treatment for pelvic organ prolapse , and it has the advantages of short operation time , fast postoperative recovery , fewer complications , and improvement of patients ′ quality of life.

Chromatin conformation, localization, and dynamics are crucial regulators of cellular behaviors. Although fluorescence in situ hybridization-based techniques have been widely utilized for investigating chromatin architectures in healthy and diseased states, the requirement for cell fixation precludes the comprehensive dynamic analysis necessary to fully understand chromatin activities. This has spurred the development and application of a variety of imaging methodologies for visualizing single chromosomal loci in the native cellular context. In this review, we describe currently-available approaches for imaging single genomic loci in cells, with special focus on clustered regularly interspaced short palindromic repeats (CRISPR)-based imaging approaches. In addition, we discuss some of the challenges that limit the application of CRISPR-based genomic imaging approaches, and potential solutions to address these challenges. We anticipate that, with continued refinement of CRISPR-based imaging techniques, significant understanding can be gained to help decipher chromatin activities and their relevance to cellular physiology and pathogenesis.
CRISPR-Cas Systems ; genetics ; Clustered Regularly Interspaced Short Palindromic Repeats ; genetics ; Genetic Loci ; Genomics ; Molecular Imaging ; methods ; Nanoparticles ; chemistry