Objective To establish a HPLC method for determining thimerosal compounds in eye drops. Methods A gradient HPLC system was used in the quantitative analysis of thimerosal compounds on Shiseido MGII C₁₈ column （4.6 mm×250 mm，5 μm）, using 1% triethylamine solution （pH adjusted to 3.0 with phosphate） as mobile phase A, the methanol as mobile phase B, gradient elution, The column temperature was 40 ℃, the detection wavelength was 222 nm, the flow rate was 1 ml/min and the injection volume was 20 µl. Results The established method had good linearity within the concentration range of 4.3-216.7 μg/ml （r>0.999） for thimerosal, with average recoveries was 102.1%, RSD2.7%. Conclusion This method was simple, accurate and highly specific, and could be used for determination of thimerosal compound in eye drops.

BACKGROUND: Death burden of stroke is severe with over one-third rural residents in China, but there is still a lack of specific national and high-quality reports on the urban-rural differences in stroke burden, especially for subtypes. We aimed to update the understanding of urban-rural differences in stroke deaths. METHODS: This is a descriptive observational study. Data from the national mortality surveillance system, which covers 323.8 million with 605 disease surveillance points (DSPs) across all 31 provinces, municipalities, and autonomous regions in China. All deaths from stroke as the underlying cause from 2015 to 2020 according to DSPs. Crude mortality rate and age-standardized mortality rate (ASMR) were estimated through DSPs. Average annual percentage change was used to explain the change in mortality rate. RESULTS: From 2015 to 2020, the majority of deaths from all stroke subtypes occurred in rural areas. There were significant differences between the changes of urban and rural ASMRs. On the whole, the changes in urban areas were evidently better, and the ASMR differences were basically expanding. Stroke ASMR in urban China decreased by 15.5%. The rural ASMR of ischemic stroke increased by 12.9%. The rural and urban ASMRs of intracerebral hemorrhage decreased by 24.9% and 27.4%, and those of subarachnoid hemorrhage decreased by 29.5% and 40.4%, respectively. The highest ASMRs of all stroke subtypes and the increasing trend of ischemic stroke ASMR make rural males the focus of stroke management. CONCLUSIONS The death burden of stroke varies greatly between urban and rural China. Rural residents face unique challenges.
Humans ; China/epidemiology* ; Stroke/mortality* ; Rural Population/statistics & numerical data* ; Male ; Female ; Urban Population/statistics & numerical data* ; Middle Aged ; Aged ; Aged, 80 and over ; Adult

Central memory T (Tcm) cells are a crucial subset in T cell development, playing an important role in long-term immune responses. Tcm cells exhibit strong proliferative capacity, long-term survival characteristics, and re-activation potential, enabling them to rapidly differentiate into effector T cells (Teff) upon antigen re-exposure, thus providing robust immune protection. The function of Tcm cells is regulated by various factors, including antigen exposure, cytokines, and metabolic conditions. A deeper understanding of their metabolic and epigenetic mechanisms under different pathological conditions will contribute to the development of more precise and effective immunotherapeutic strategies. This review elaborates on the origin and characteristics of Tcm cells, as well as their roles in antiviral responses, tumor immunity, and immunotherapy.
Humans ; Memory T Cells/cytology* ; Animals ; Immunologic Memory ; Neoplasms/therapy* ; Immunotherapy

Mechanical pain is one of the most common causes of clinical pain, but there remains a lack of effective treatment for debilitating mechanical and chronic forms of neuropathic pain. Recently, neurotoxin GsMTx4, a selective mechanosensitive (MS) channel inhibitor, has been found to be effective, while the underlying mechanism remains elusive. Here, with multiple rodent pain models, we demonstrated that a GsMTx4-based 17-residue peptide, which we call P10581, was able to reduce mechanical hyperalgesia and neuropathic pain. The analgesic effects of P10581 can be as strong as morphine but is not toxic in animal models. The anti-hyperalgesic effect of the peptide was resistant to naloxone (an μ-opioid receptor antagonist) and showed no side effects of morphine, including tolerance, motor impairment, and conditioned place preference. Pharmacological inhibition of TRPV4 by P10581 in a heterogeneous expression system, combined with the use of Trpv4 knockout mice indicates that TRPV4 channels may act as the potential target for the analgesic effect of P10581. Our study identified a potential drug for curing mechanical pain and exposed its mechanism.

Objective:To observe the effect of taping on the kinematic characteristics of the ankle joint during forward and lateral jumps by male basketball players with chronic ankle instability (CAI).Methods:A Vicon 3D motion capture system and a Kistler 3D ergometer were used to collect data describing the landing data with or without taping from forward and lateral jumps of 29 male basketball players with CAI. The landing data included the dorsiflexion and plantarflexion angles, valgus and inversion angles and external and internal rotation angles. Dorsiflexion or plantarflexion angular velocity was also recorded along with valgus or inversion angular velocity and external or internal rotation angular velocity 200ms, 150ms, 100ms and 50ms before and after touchdown. The data obtained were modeled using three-dimensional motion analysis software, and then analyzed.Results:Taping reduced the ankle plantarflexion in landing from a forward jump by 3.27° 50ms before landing and by 2.70° at touchdown. The ankle inversion angle was reduced 2.13° 50ms before touchdown, while the angle of external rotation decreased by 2.59° 200ms before touchdown and 2.17° 150ms before. Moreover, the angle of external rotation 100ms after landing was reduced by a significant 1.59° compared with that without taping. In lateral jumps taping reduced the average ankle plantarflexion angle by 1.94° 50ms before landing and 3.23° at touchdown compared with no taping. Ankle inversion was reduced significantly by 2.86° 50ms before landing and by 2.87° at touchdown. External rotation was a significant 0.93° less 200ms before landing and 2.36° smaller 150ms before touchdown. In the forward jump landing, taping reduced the average angular velocity of ankle dorsiflexion on landing by a significant 58.5°/s and by 28.39°/s 100ms later. In the lateral jump landings the average ankle dorsiflexion velocity decreased by significant 20.5°/s with taping, but the valgus velocity increased by 49.7°/s compared with no taping. However, 50ms after touchdown the speed of external rotation with taping was 30.3°/s slower than without taping.Conclusions:Ankle taping can modify ankle rotation angles and angular velocities during landing from jumps. This is particularly helpful for basketball players with CAI.

Objective:To explore the relationship between serum retinol binding protein(RBP)and metabolic-associated fatty liver disease(MAFLD)in elderly patients with type 2 diabetes mellitus(T2DM)and possible underlying metabolic mechanisms.Methods:A total of 3384 elderly T2DM patients hospitalized and with complete clinical records at the Department of Endocrinology and Metabolism, Sixth People's Hospital Affiliated to Shanghai Jiao Tong University between January 2003 and December 2012 were recruited in this retrospective study.Patients were divided into four groups according to the quartiles of serum RBP levels: the first quartile of serum RBP levels(<35 mg/L, 844 cases), the second quartile of serum RBP levels(35 mg/L≤ RBP ≤41 mg/L, 773 cases), the third quartile of serum RBP levels(42 mg/L≤ RBP ≤51 mg/L, 902 cases), and the fourth quartile of serum RBP levels(RBP>51 mg/L, 865 cases). Clinical data and laboratory test results were collected.Differences in the prevalence of MAFLD were compared between the four groups.The association between RBP and MAFLD was analyzed via binary logistic regression.Results:After adjusting for age and sex, the proportion of obesity( χ2=15.222, P<0.01), the percentage using lipid-lowering drugs( χ2=88.552, P<0.01), systolic blood pressure( F=12.002, P<0.01), diastolic blood pressure( F=6.872, P<0.01), waist circumference( F=9.563, P<0.01), waist-hip ratio( F=7.972, P<0.01), body mass index( F=9.057, P<0.01), serum creatinine( χ2=185.445, P<0.01), serum uric acid( χ2=314.691, P<0.01), 24-hour urinary albumin( χ2=91.012, P<0.01), alanine aminotransferase( χ2=17.049, P=0.003), γ-glutamyl transpeptidase( χ2=50.514, P<0.01), total cholesterol( F=45.669, P<0.01), triglycerides( χ2=361.269, P<0.01), low-density lipoprotein( F=8.772, P<0.01), fasting C-peptide( χ2=165.756, P<0.01), 2h postprandial C-peptide( χ2=120.690, P<0.01), and the homeostasis model assessment of insulin resistance(HOMA2-IR)( χ2=148.884, P<0.01)in elderly patients with T2DM all showed a clear upward trend.The prevalence of MAFLD also gradually increased across the quartiles of serum RBP levels[26.5%(224/844), 30.1%(233/773), 36.6%(330/902), and 41.8%(362/865)], respectively( χ2=52.526, P<0.01). Elderly T2DM patients with MAFLD had a significantly higher value of HOMA2-IR than those without MAFLD[2.0(1.31-2.8) vs.1.39(0.86-2.06), F=220.826, P<0.01]. After correcting for other confounding factors, binary logistic regression showed that serum RBP was strongly associated with the presence of MAFLD in elderly patients with T2DM( β=0.209, 95% CI: 1.079-1.408, OR=1.232, χ2=9.441, P<0.01). Conclusions:Elevated serum RBP levels are an independent risk factor for the development of MAFLD in elderly T2DM patients, possibly through increased insulin resistance induced by RBP.

Objective:To systematically evaluate the prevalence of norovirus causing sporadic acute gastroenteritis in China.Methods:Relevant articles on acute gastroenteritis caused by norovirus in China published between January 2010 and October 2023 were retrieved from Wanfang, CNKI and PubMed database. The articles met inclusion and exclusion criteria were enrolled in this study. Excel software and SPSS20.0 software were used for statistical analysis. The epidemiological features of sporadic cases of acute gastroenteritis caused by norovirus in China were summarized using descriptive statistical analysis.Results:A total of 500 articles were included in this study, involving 784 486 cases of acute gastroenteritis and 670 292 samples in 32 provinces and regions. Norovirus GⅡ was the predominant genogroup causing acute gastroenteritis in China in recent years, but there were significant differences in the distribution of genotypes and epidemic strains at different times. GⅡ.4 was the predominant genotype in each year, and GⅡ.4/2006b and GⅡ.4 /Sydney_2012 were the main epidemic strains. Norovirus-related diarrhea occurred throughout the year, especially between the months of October and December. The incidence of norovirus infection was high in children under five years old and varied in different regions.Conclusions:Norovirus GⅡ was the predominant genogroup causing norovirus-related sporadic acute gastroenteritis in China, but there was an obvious genetic evolutionary trend in the epidemic strains. Factors such as epidemic strains, season and geographical region should be considered when making strategies for the prevention and control of norovirus-related diarrhea and developing vaccines.

Objective To investigate the association of uric acid excretion(UUAE)with obesity and abdominal obesity in newly diagnosed patients with type 2 diabetes mellitus(T2DM).Methods A total of 1175 newly diagnosed T2DM patients hospitalized in the Department of Endocrinology and Metabolism of Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine were enrolled in this study from January 2006 to December 2012.According to the quartile of UUAE,they were divided into Q1 group(UUAE＜2383 μmol/24 h,n=295),Q2 group(2383≤UUAE＜2953 μmol/24 h,n=292),Q3 group(2954≤UUAE＜3680 μmol/24 h,n=292)and Q4 group(UUAE＞3680 μmol/24 h,n=293).Clinical data and laboratory examination results were collected,and the prevalence of obesity and abdominal obesity was compared among the four groups.The associations of UUAE with obesity and abdominal obesity were analyzed.Results The prevalence of obesity was 47.9%,while the prevalence of abdominal obesity was 61.9%in the whole study population.After adjusting for age,the prevalence of abdominal obesity was higher in women than in men(P＜0.05).After adjusting for age and gender,the prevalence of obesity and MS was higher in Q4 group than in Q1,Q2,and Q3 groups(P＜0.05),and the prevalence of abdominal obesity was higher in Q4 group than in Q1 and Q2 groups(P＜0.05).Compared with Q1 group,the proportion of men,BMI,WC,DBP,FIns,2 hIns,HOMA-IR,TG,ALT,γ-GT,SUA,UAlb in Q4 group increased(P＜0.05),age,HbA1c,HDL-C decreased(P＜0.05).Logistic regression analysis showed that after adjusting for confounding factors,UUAE was a factor affecting obesity and abdominal obesity.Conclusion UUAE increases the risk of obesity,abdominal obesity and MS in newly diagnosed T2DM patients.UUAE may be used as a simple indicator to assess the risk of metabolic disorders such as obesity and MS in T2DM patients.

Objective:To explore one-stage total knee arthroplasty (TKA) combined with open reduction and internal fixation (ORIF) for knee osteoarthritis complicated with tibial stress fracture.Methods:The 3 patients were retrospectively analyzed who had been treated for knee osteoarthritis complicated with tibial stress fracture at Department of Orthopedics, Ganzhou District People＇s Hospital from March 2018 to March 2020. They were all female, aged from 54 to 76 years (average, 66 years). There were 2 transverse fractures and one short oblique fracture; all of them had knee varus deformity. The Hospital for Special Surgery (HSS) scores averaged 37.6 (from 28 to 50) for the left knee and 28.3 (from 22 to 39) for the right knee. One-stage TKA was performed for the articular surface while ORIF for the right tibial stress fracture for all patients. Recorded were fracture union time, HSS knee score and range of articular motion.Results:The 3 patients were followed up for 25 to 44 months (average, 32 months).The fracture union time ranged from 4 to 7 months (average, 5 months). The last follow-ups revealed no such complications as prosthesis loosening, peri-prosthesis osteolysis or joint instability. Knee varus deformity was corrected in all patients. The HSS knee scores at the last follow-up averaged 89.6 (from 88 to 91) for the left knee and 88.3 (from 85 to 90) for the right knee.Conclusion:In the treatment of knee osteoarthritis complicated with tibial stress fracture, one-stage TKA combined with ORIF can restore the function of knee joint, leading to fine curative effects.

The proteolysis targeting chimeras (PROTACs) technology has been rapidly developed since its birth in 2001, attracting rapidly growing attention of scientific institutes and pharmaceutical companies. At present, a variety of small molecule PROTACs have entered the clinical trial. However, as small molecule PROTACs flourish, non-small molecule PROTACs (NSM-PROTACs) such as peptide PROTACs, nucleic acid PROTACs and antibody PROTACs have also advanced considerably over recent years, exhibiting the unique characters beyond the small molecule PROTACs. Here, we briefly introduce the types of NSM-PROTACs, describe the advantages of NSM-PROTACs, and summarize the development of NSM-PROTACs so far in detail. We hope this article could not only provide useful insights into NSM-PROTACs, but also expand the research interest of NSM-PROTACs.