Osteoarthritis (OA) causes chronic pain that significantly impairs quality of life, with current treatments often proving insufficient and accompanied by adverse effects. Recent research has identified the dorsal root ganglion (DRG) and its resident macrophages as crucial mediators of chronic OA pain through neuroinflammation driven by macrophage polarization. We present a novel injectable thermo-sensitive hydrogel system, KAF@PLEL, designed to deliver an anti-inflammatory peptide (KAF) specifically to the DRG. This biodegradable hydrogel enables sustained KAF release, promoting the reprogramming of DRG macrophages from pro-inflammatory to anti-inflammatory phenotypes. Through comprehensive in vitro and in vivo studies, we evaluated the hydrogel's biocompatibility, effects on macrophage polarization, and therapeutic efficacy in chronic OA pain management. The system demonstrated significant capabilities in preserving macrophage mitochondrial function, suppressing neuroinflammation, alleviating chronic OA pain, reducing cartilage degradation, and improving motor function in OA rat models. The sustained-release properties of KAF@PLEL enabled prolonged therapeutic effects while minimizing systemic exposure and side effects. These findings suggest that KAF@PLEL represents a promising therapeutic approach for improving outcomes in OA patients through targeted, sustained treatment.

Objective: To assess the presence of vector-borne pathogens [including Zika virus (ZIKV), dengue virus (DENV), chikungunya virus (CHIKV), and Plasmodium (PLAS)] among voluntary blood donors in Wenshan Zhuang and Miao Autonomous Prefecture (referred to as Wenshan), so as to provide a basis for formulating blood safety-related strategies. Methods: Blood samples from voluntary blood donors in Wenshan from June to August 2022 to 2024 were selected. Real-time fluorescent quantitative reverse transcription polymerase chain reaction (RT-qPCR) was used to test 20 426 samples for ZIKV RNA, DENV RNA, and CHIKV RNA; and 19 765 samples were tested for PLAS DNA. Results: All 20 426 samples tested for ZIKV RNA, DENV RNA, and CHIKV RNA were negative; similarly, all 19 765 samples tested for PLAS DNA were negative. Conclusion: The risk of ZIKV, DENV, CHIKV, and PLAS infection among voluntary blood donors in Wenshan is relatively low. Routine surveillance for these pathogens as endemic diseases is not currently warranted. It is recommended to adjust the screening strategy based on the dynamic situation of local epidemiology control and prevention.

Objective:To objectively evaluate the therapeutic effect of Chinese cupping therapy.Method:Near-infrared spectroscopy (NIRS) was used to evaluate the concentration change in oxygenated hemoglobin ([HbO 2]), deoxy-hemoglobin ([Hb]) and blood volume ([tHb]) in 13 healthy volunteers during cupping therapy for the infraspinatus muscle. Results:During the cupping therapy and its pre- and post-treatment period, it was observed that [Hb] and [tHb] in the tissue surrounding the cupping site decreased significantly (both P<0.05), and [HbO 2] increased significantly ( P<0.05), which showed an increase in oxygen uptake. After the cupping was removed, the above hemodynamic changes could still continue for a period of time. Conclusions:Cupping therapy has potential positive therapeutic effects in promoting the hemodynamics for facilitating muscular functions. Functional NIRS surgery has great application potential in the field of physical rehabilitation therapy such as cupping.

Objective:To investigate the normal range of exhaled nitric oxide (FeNO) in 6-18-year-old children in China, so as to provide a data base for the establishment of FeNO standards for Chinese children.Methods:A multi-center study was conducted on 5 949 children aged 6-18 (3 101 males and 2 848 females) in 16 pro-vinces of 7 administrative districts in China.According to the technical standard recommended by American Thoracic Society/European Respiratory Association, FeNO was measured, and the relationship of FeNO with the sex, age, height, weight, body mass index and region was discussed.Results:The geometric mean FeNO value of Chinese children aged 6-18 was 14.1 ppb, and its 95% confidence interval (skewness distribution) was 1.0-38.2 ppb.The geometric mean FeNO values of children aged 6-11 and 12-18 were 13.1 ppb and 15.7 ppb, respectively, and their 95% confidence intervals (skewness distribution) were 1.0-38.1 ppb and 2.0-38.2 ppb.For children at and under 11 years old, FeNO decreased with age, with a mean decline of 1 ppb per year.The multiple linear regression results suggested that there was a significant correlation between FeNO and age for children aged 6-11, and FeNO of children aged 12-18 was significantly correlated with the gender, height, and region(all P<0.01). Conclusions:FeNO values of Chinese children and adolescents in this study are higher than those obtained by the previous study conducted from 2010 to 2012.For children aged 12-18, 16 ppb is recommended as the clinical cut-off point.For children at or under 11 years old, the influence of age on FeNO should be considered, and the cut-off point of FeNO decreases by 1 ppb as the age is reduced by one year.

Objective To explore the expression of thrombospondin-1 ( TSP-1 ) and bone morphogenetic protein-7 ( BMP-7 ) in mucus membrcane of chronic rhinosinusitis ( CRS ) and its potential significance in pathogenesis . Methods TSP-1 ,BMP-7 and TGF-β1 were detected by ELISA .Results The expression level of TSP-1 and TGF-β1 increased gradually with the advanced stage of CRSsNP ( P<0.05 ) .The expression of BMP-7 decreased gradu-ally with the advanced stage of CRSsNP ( P<0.05 ) .The expression of TSP-1 and TGF-β1 decreased gradually with the advanced stage of CRSwNP ( P<0.05 ) .The expression level of BMP-7 increased gradually with the ad-vanced stage of CRSwNP ( P<0.05 ) .Conclusions The expressions of TSP-1 and BMP-7 were abnormal in nasal mucosa of CRS , which might be involved in the pathogenesis of CRS .

A Raman spectrum fitting method based on Voigt function was proposed. The method can be used to fit the profile of Raman spectrum produced by unknown components in sample based on Voigt functions. In the experiment, pure methanol was added by various volume fraction ( 2. 5% -80. 0%) into three base-gasoline with different compositions. It can be applied to fit the background Raman spectrum produced by basic-gasoline comprised of unknown compositions. The remained spectrum, after deducting the fitted spectrum from the mixture spectrum, was considered as the contribution attributed only to methanol. And then a linear calibration model was built based on 4 training samples to predict the concentration of methanol. The root mean square error of prediction (RMSEP) was 1. 86% (V/V) and the correlation coefficient (R2) was 0. 987. Results show that it is an effective method to solve the problem of strong spectral overlap in mixture, and it has the advantages of high generalization and few training samples.

Objective: To investigate the clinical effect of total cystectomy and W-shaped orthotopic ileal neobladder for bladder cancer. Methods: Total cystectomy and W-shaped orthotopic ileal neobladder were performed on 29 male patients and 3 female patients. Atfer the cystectomy, 35-40 cm terminal ileal segment was isolated to make W-shaped orthotopic ileal neobladder. Bilateral uretero-ileal anastomoses were constructed by nipple technique, urethral stump was sutured to the lowest portion of the ileal pouch. Results: All surgeries were completed successfully. Patients were able to void by increasing the abdominal pressure, daytime continence rate was 87.5% and nighttime continence rate was 78.1%. The mean neobladder capacity was 410.6 mL and the mean postvoid residual urine was22.7 mL at 6 months. After the surgery, ileal neobladder leakage occurred in 3 (9.4%) patients, mild ileus occurred in 2 (6.3%) patients, ileo-urethral anastomosis stricture developed in 1(3.1%) patient, and dysuria occurred in 3 (9.4%) patients because of the mucus.HTe complications were treated properly and satisfactory results were obtained. Erection was preserved in 5 of the 9 male patients with normal erectile function, and normal sexual function was preserved in 1 female patient who underwent uterus-sparing cystectomy. HTe mean follow-up was 15 months.One patient died of distant metastasis and pneumonia, while other patients survived without tumor. Conclusion: Total cystectomy and W-shaped orthotopic ileal neobladder have the advantages of voiding through the native urethra, satisfactory continence, low complication rates of upper urinary tract damage and electrolyte imbalance. W-shaped orthotopic ileal neobladder may be considered as the ifrst option of urinary diversion atfer cystectomy. Postoperative management should focus on complications and follow-up.

Objective To explore the time of application of hemoperfusion (HP) for the treatment of acute serious organophosphorus pesticide (ASOPP). Methods One hundred and four patients with ASOPP were randomly divided into two groups, 46 patients accepted traditional treatment(control group), 58 patients were treated with traditional treatment and HP (HP group). The patients in HP group were again divided into three groups according the different time of treatment (time of beginning HP after poisoning), the 4-8 hours group (HP-1 group, 27 patients), the 9-16 hours group (HP-2 group, 19 patients), the 17-32 hours group (HP-3 group, 12 pafients).Tbe coma period, the dosage of atropine, the time of regaining the vitality of cholinesterase, the time of hospitalization and the rate of fatality and curing among groups were observed. Results The coma period, the dosage of atropine, the time of regaining the vitality of cholinesterase, the time of hospitalization and the rate of fatality of the HP group were less than those of the control group (P<0.05). Compared with HP-1 group, the eoma period, the dosage of atropine, the time of regaining the vitality of eholinesterase and the time of hospitalization of the HP-2 group and the HP-3 group were higher (P<0.05), but the difference of the rate of fatality and curing between the HP-1 group and the other HP groups was not statistically significant (P>0.05). The difference of all of the above indicators between HP-2 group and HP-3 group was not statistically significant (P>0.05). Conclusion Application of hemoperfusion among 4-32 hours after poisoning for the treatment of ASOPP can improve the efficacy of therapy, and the efficacy of application of hemoperfusion among 4-8 hours is the best.

AIM: To study the effects of propofol on plasma membrane fluidity in PC12 cells and liposome,and its relevant mechanism. METHODS: Fluorescence depolarization method was used to measure values of fluorescence anisotropy, fluorescence polarization as well as microviscosity in PC12 cells and microviscosity in liposome continuously for 30 min. RESULTS: Propofol induced a significant decrease of fluorescence anisotropy, fluorescence polarization as well as microviscosity in PC12 cells, particularly in the first 5 min. After 5 min, the values of anisotropy were remained lower levels. Although propofol at concentration of 1 mg?L -1 had no effects on microviscosity in liposome, porpofol at concentration of 10 mg?L -1 and 100 mg?L -1 significantly decreased microviscosity in liposome. CONCLUTION: Propofol can significantly increase membrane fluidity in PC12 cells and liposome in a concertration dependent manner, and the anesthetic effect of propofol may be resulted from changes of membrane fluidity and structure of neurocyte.

AIM To study the effects of propofol on membrane fluidity and intracellular free Ca 2+ concentration ([Ca 2+ ] i ) in PC12 cells and discuss its relevant mechanism. METHODS PC12 cell lines were divided into seven groups: control, solvent and propofols(1,3,10,30,100 mg?L -1 ). Fluorescence depolarization method was used to measure dynamically microviscosity in PC12 cells and [Ca 2+ ] i was detected using calcium fluorescentprobe Fluo 3/AM and a laser scanning confocal microscope. RESULTS ①Acute administration of various doses of propofol induced a significant decrease of microviscosity in PC12 cells dose dependenty. ② Solvent, propofol at dose of 10 mg?L -1 had no effect on [Ca 2+ ] i in PC12 cells, however, after 30 and 100 mg?L -1 administration, [Ca 2+ ] i increased markedly at 20～30 seconds (increase percentage were 119% and 140% respectively) and then recovered to their pre administration levels within 50 seconds. CONCLUSION The propofol can significantly increase membrane fluidity in PC12 cells in a dose dependent manner and elevate [Ca 2+ ] i in PC12 cells at doses of 30 and 100 mg?L -1 . These changes are consistent with each other and related closely with anesthetic effect of propofol.