Objective To evaluate the effect of the urinary reservoir constructed with ileocecum-appendix in the elderly with bladder cancer. Methods From March 2002 to June 2008, 12 cases were treated using ileocecum-appendix as the reservoir after radical cystectomy. They all received the imaging urodynamics examination and were followed up for 1 year. Results The 11 of 12 patients had urinary continence completely. Only 1 case had incontinence and 3 cases had incontinentia urinae at night. Times of uresis were 8-10/day and 3-5/night within 3 months after surgery, and 4-6/day and 0-2/night 6 months after surgery. The urinary output was 150-350 ml/time. Urodynamics showed that mean urinary flow rate was 10.5 ml/s, mean initial bladder pressure was 27 cm H2O, the maximum filling pressure was 35 cm H2O. The average reservoir capacity was 152 ml and 420 ml, respectively. The out let pressure of posterior urethra was 52 cm H2O. The volume of residual urine was 0-65 ml. No evidence of ureteral reflux occurred, no hyperchloremic acidosis was observed. Conclusions Orthotopic bladder reconstruction is considered as an ideal form of urinary diversion characterized by low pressure, larger capacity and continence.

Objective To explore a space craft precooling temperature at which excessive thermal stress on the crew member could be prevented or reduced in an overheated launch or reentry module. Method Five young male volunteers wearing a space suit participated in 25 tests at sea level.The space suit was either ventilated in a volume air flow rate of 100 L/min (STPD) with ambient air at temperatures (Ta) of 15℃,10℃,and 5℃,respectively,or not ventilated. Rectal (Tr),mean skin (Tsk) and mean body (Tb) temperatures were measured. Result At Ta 15℃,Tr decreased without significance (from 37.0±0.2℃to 36.7±0.3℃) in 120-min tests,whereas Tsk and Tb decreased significantly,and subjects had local cold strain whether the space suit was ventilated or not; while at Ta 10℃,Tr decreased from 37.0±0.3℃ to 36.3±0.3℃(P<0.05),subjects had a whole body cold strain,and both Tsk and Tb dropped continuously and significantly. Conclusion Ambient temperature 15℃,at which the thermal comfort states of crew was not significantly degraded,was acceptable after precooling in a space craft.

Objective To investigate the expression of Notch1 protein and its clinicopathologieal characteristics in colorectal carcinomas. Methods The expression and location of Notch1 protein were determined using immunohistochemical S-P method in 30 colorectal carcinomas and 18 normal colorectal tissues. Results The average positive rate of Notch1 protein was 45.5 ± 0. 7% in colorectal carcinomas and 6. 8 ± 0. 9% in normal colorectal tissues. There was significant difference between colorectal carcinomas and normal colorectal tissues (P ＜ 0. 05). The expression of Notchl protein in different age, sex, tumor site, nodal involvement and Dukes stage had no significant difference. The expression of Notch1 protein in different histology grade had significantly statistical difference. Conclusion Notch1 expression was associated with the development of colorectal carcinoma. Notch1 was the potential oncagenic gene. Nothe1 would become the new target of the colorectal tumor therapy in the future.

Objective To evaluate the effects of maternal exposure to sevoflurane for anesthesia or surgery on social interaction behaviors in offspring mice. Methods Fifteen pregnant C57BL∕6 mice on ges-tational day 18 were assigned into 3 groups(n=5 each)using a random number table: control group (group C), sevoflurane anesthesia group(group Sevo)and surgery group(group Surg). Group C inhaled 100% oxygen for 2 h in group C. Group Sevo inhaled 3% sevoflurane in oxygen for 2 h. In group Surg, 3%sevoflurane in oxygen was inhaled for 2 h and exploratory laparotomy was performed. At juvenile age(on 30th day after births)and in early adulthood(on 60th day after births), the offspring mice underwent so-cial interaction tests using the three-chambered sociability paradigm, including sociability and preference for social novelty. Results During 1st testing phase: there was no significant difference in time spent in ex-ploring the chamber on the left and right sides or in sniffing directed at the empty wire cage on the left and right sides among the three groups(P>005). During 2nd testing phase: time spent in exploring the cham-ber containing stranger-1 mouse in the wire cage and in sniffing directed at the wire cage containing stranger-1 mouse was significantly prolonged at juvenile age and in early adulthood in three groups when compared with the empty wire cage(P<005). During 3rd testing phase: compared with stranger-1 mouse, time spent in exploring the chamber containing stranger-2 mouse at juvenile age and in sniffing directed at the wire cage containing stranger-2 mouse at juvenile age and in early adulthood was significantly prolonged in group C, time spent in exploring the chamber containing stranger-2 mouse and in sniffing directed at the wire cage containing stranger-2 mouse was significantly prolonged in early adulthood in group Sevo, and time spent in sniffing directed at the wire cage containing stranger-2 mouse was significantly prolonged in early adulthood in group Surg(P<005). Conclusion Maternal exposure to sevoflurane for anesthesia or surgery induces social interaction deficits in the offspring mice in which lower levels of preference for social novelty are detected, especially at juvenile age.

Objective:To identify the risk factors for poor prognosis following interventional treatment in the patients with postherpetic neuralgia (PHN) and construct a predictive model.Methods:The medical records from patients with PHN undergoing interventional therapy at the First Affiliated Hospital of Soochow University from March 2020 to August 2023 were retrospectively collected, including basic characteristics, past medical and surgical history, symptoms, medication therapy, clinical pain score, neutrophil/lymphocyte ratio (NLR) before interventional treatment and interventional treatment methods. Logistic regression analysis was used to identify the risk factors associated with poor prognosis following interventional treatment in PHN patients, and a nomogram predictive model for poor prognosis was constructed. The discrimination and calibration of the nomogram predictive model were evaluated using the C-index and Hosmer-Lemeshow test. Calibration curves and clinical decision curves were drawn to further verify the accuracy of the predictive model.Results:The results of the multivariate logistic regression analysis show that increasing age, prolonged disease duration, elevated NLR, use of immunosuppressants and use of pulsed radiofrequency were independent risk factors for poor prognosis following intervention treatment in PHN patients ( P<0.05). The nomogram predictive model for poor prognosis following PHN interventional treatment constructed based on these factors had a C-index of 0.844. Calibration curves showed good consistency between predicted probability of poor prognosis and actual incidence of poor prognosis. Clinical decision curves indicated that the predictive model provided good accuracy and net benefit. Conclusions:Increasing age, prolonged disease course, elevated NLR, use of immunosuppressants and use of pulsed radiofrequency are independent risk factors for poor prognosis following interventional treatment in the patients with PHN. The nomogram predictive model based on these factors can effectively predict the occurrence of poor prognosis in PHN patients undergoing interventional treatment.

Objective To investigate the effects of MCSO on physiological behavior and antioxidant index in D.melanogaster.Methods One-day-old wild type D.melanogaster was divided into control group,0.25％,0.5％,1％,2％and 4％dose groups,as well as male and female groups.The control group was exposed to the base medium,and each dose group was exposed to the MCSO medium added with 0.25％,0.5％,1％,2％and 4％concentrations,respectively.The optimal dosage concentration and time of administration were investigated by climbing experiment.Then the flies were divided into control group,model group and MCSO group.The model group was established by depriving the flies of sleep through repeated nocturnal light stimulation.Period of drug treatment,appetite test,negative geotaxis ability test,stress test,olfactory memory test,and sleep-wake rhythm detection were used to explore the effects of MCSO on their physiological behavior.The activities of super oxidase dismutase(SOD),catalase(CAT),and malondialdehyde(MDA)were detected by enzyme-linked immunosorbent assay.Results MCSO enhanced the locomotory ability of 30-day-old D.melanogaster(P＜0.01),increased the activity of SOD and CAT(P＜0.01),and decreased the concentration of MDA(P＜0.01).Improve olfactory memory of senile fruit flies.After sleep deprivation,the night sleep time of female Drosophila model group was reduced(P＜0.05),and that of male Drosophila model group was reduced(P＜0.01).After feeding MCSO,the night sleep time of female drosophila model group was extended(P＜0.05),and that of male drosophila model group was extended(P＜0.01).Conclusions MCSO had a certain antioxidant effect,prolonging the sleep time and improving the olfactory memory of sleep-deprived Drosophila.

SIRT6 belongs to the conserved NAD⁺-dependent deacetylase superfamily and mediates multiple biological and pathological processes. Targeting SIRT6 by allosteric modulators represents a novel direction for therapeutics, which can overcome the selectivity problem caused by the structural similarity of orthosteric sites among deacetylases. Here, developing a reversed allosteric strategy AlloReverse, we identified a cryptic allosteric site, Pocket Z, which was only induced by the bi-directional allosteric signal triggered upon orthosteric binding of NAD⁺. Based on Pocket Z, we discovered an SIRT6 allosteric inhibitor named JYQ-42. JYQ-42 selectively targets SIRT6 among other histone deacetylases and effectively inhibits SIRT6 deacetylation, with an IC₅₀ of 2.33 μmol/L. JYQ-42 significantly suppresses SIRT6-mediated cancer cell migration and pro-inflammatory cytokine production. JYQ-42, to our knowledge, is the most potent and selective allosteric SIRT6 inhibitor. This study provides a novel strategy for allosteric drug design and will help in the challenging development of therapeutic agents that can selectively bind SIRT6.