Simulium (Gomphostilbia) taitungense sp. nov. is described on the basis of reared adult, pupal and mature larval specimens collected from Taitung, Taiwan. This new species is placed in the ceylonicum species-group within the subgenus Gomphostilbia and is distinguished from related known species by the characteristic colour markings on the ventral surface of the head capsule and on the dorsal surface of the abdomen in the larva. The male of Simulium (Gomphostilbia) tuenense Takaoka, which was originally described from a pharate pupa and a larva, is described for the first time; the association of the adult stage with the larval stage was confirmed by the comparison of the sequences of the mitochondrial 16S rRNA gene; this species is also placed in the ceylonicum species-group.

Objective To explore the prevalence and analyze the related risk factors for post-stroke depression among middle-aged and elderly stroke patients of Mongolia and Han nationality in Inner Mongolia Autonomous Region.Methods A stratified multistage random cluster sampling method was used to investigate the prevalence of stroke in the population aged ≥45 years in different areas of Inner Mongolia Autonomous Region.A total of 11 088 people were investigated and 498 were stroke patients among them.A set of scale assessment and the general situation were used to investigate stroke patients and 443 patients completed the whole survey.Results The total prevalence of post-stroke depression (PSD) was 41.08％ in 443 stroke patients,among which the prevalence rate was 40.57％ for Mongolian population and 41.85％ for Han population,and no significant difference was found between Mongolian and Han nationality(x2=1.372,P=0.504).There were significant differences in the types of stroke between the Mongolian and Han nationality (x2 =7.347,P=0.025).The age (t=4.321,P=0.000),educational level (x2 =27.036,P=0.001) and economic burden (x2=27.877,P=0.000) were statistically significant between Mongolian and Han nationality.The differences of frequency of stroke (x2 =6.545,P=0.011),economic burden (x2 =16.148,P=0.001),cognitive dysfunction (x2 =9.065,P=0.003),daily living ability (x2 =34.466,P =0.000),alcohol consumption history(x2=4.516,P=0.034)were statistically significant.Logistic regression analysis showed that alcohol consumption history,economic burden,the frequency of stroke,and cognitive dysfunction were the influencing factors of PSD.Conclusion PSD is one of the important factors affecting the post-stroke psychological burden in Inner Mongolia Autonomous Region.There is no national difference in the prevalence of PSD among Mongolian and Han people,which provides a theoretical basis for the treatment and intervention of PSD.

Purpose: This study was conducted to evaluate the efficacy of bladder outlet surgery in patients with detrusor underactivity (DU) and to identify factors associated with successful outcomes. Methods: We conducted a retrospective review of men diagnosed with DU in urodynamic studies who underwent bladder outlet surgery for lower urinary tract symptoms between May 2018 and April 2023. The International Prostate Symptom Score (IPSS) questionnaire, uroflowmetry (UFM), and multichannel urodynamic studies were administered. Successful treatment outcomes were defined as either an IPSS improvement of at least 50% or the regaining of spontaneous voiding in patients urethral catheterization prior to surgery. Results: The study included 93 male patients. Men diagnosed with significant or equivocal bladder outlet obstruction (BOO) experienced significant postoperative improvements in IPSS (from 20.6 to 6.0 and from 17.4 to 6.5, respectively), maximum urine flow rate (from 5.0 mL/sec to 14.4 mL/sec and from 8.8 mL/sec to 12.2 mL/sec, respectively) and voiding efficiency (from 48.8% to 86.0% and from 61.2% to 85.1%, respectively). However, in the group without obstruction, the improvements in IPSS and UFM results were not significant. The presence of detrusor overactivity (odds ratio [OR], 3.152; P=0.025) and preoperative urinary catheterization (OR, 2.756; P=0.040) were associated with favorable treatment outcomes. Conversely, an unobstructed bladder outlet was identified as a negative prognostic factor. Conclusions In men with DU accompanied by equivocal or significant BOO, surgical intervention to alleviate the obstruction may enhance the IPSS, quality of life, and UFM results. However, those with DU and an unobstructed bladder outlet face a comparatively high risk of treatment failure. Preoperative detrusor overactivity and urinary catheterization are associated with more favorable surgical outcomes. Consequently, active deobstructive surgery should be considered for patients with DU who are experiencing urinary retention.