Septic shock, a prevalent critical condition in intensive care units (ICU) and a major cause of patient mortality, is fundamentally attributed to microcirculatory dysfunction. Traditional macrocirculatory parameters are often insufficiently sensitive to reflect microcirculatory status. Consequently monitoring peripheral microcirculatory function holds crucial significance for assessing disease progression and evaluating therapeutic efficacy in septic shock. The peripheral perfusion index (PPI), obtained from a standard pulse oximeter, is based on photoplethysmography (PPG). It calculates the differential absorption of red and infrared light emitted by the sensor between pulsatile arterial blood and non-pulsatile tissue, enabling real-time reflection of peripheral perfusion and thus providing non-invasive, continuous monitoring of microcirculatory function. Although often overlooked compared to other ICU monitoring parameters, PPI has demonstrated notable clinical advances in septic shock management. Specifically, in early identification, PPI combined with sequential organ failure assessment (SOFA) predicts disease progression, with its dynamic changes further aiding prognosis assessment. During fluid resuscitation, it guides fluid responsiveness evaluation and serves as a therapeutic target to optimize strategies. In circulatory support, it assists in determining vasoactive drug initiation timing and dosage titration. Additionally, PPI aids mechanical ventilation weaning and organ dysfunction evaluation. This article reviews the principles, influencing factors, and clinical application advances of PPI in septic shock, aiming to provide clinicians with a basis for individualized intervention, improved patient outcomes, and the advancement of precision medicine in septic shock management.
Humans ; Shock, Septic/therapy* ; Microcirculation ; Perfusion Index ; Prognosis ; Photoplethysmography

OBJECTIVE To investigate the effects of renally inappropriate medication （RIM） on the frailty of elderly patients with diabetes. METHODS The data of elderly patients with diabetes mellitus admitted to a third-grade class A hospital in Yunnan province from January to December 2022 were collected， and Beers criteria （2019 edition） and Chinese version of FRAIL scale were used to evaluate RIM and the frailty of the patients； the patients were divided into the trial group （with RIM） and the control group （without RIM） according to whether there was RIM. The propensity score matching was used to balance confounding factors between two groups， and the influence of RIM on the frailty of elderly diabetic patients was analyzed by the Logistic regression model. RESULTS Among the 367 patients， 80 patients （21.80%） had RIM， the drugs involved RIM were spironolactone （82.56%）， rivaroxaban （13.95%） and gabapentin （3.49%）. After reaching the balance between groups using the propensity score matching method， the incidence of frailty was 77.94% in trial group and 27.94% in control group （P＜0.001）； the difference was not statistically significant in other confounding factors between the two groups （P＞0.05）. Results of Logistic regression analysis showed that the risk of frailty in the experimental group was 3.118 times that of the control group （odds ratio was 3.118，95% confidence interval was 1.758-5.530， P＜0.001）. CONCLUSIONS RIM is a risk factor for the frailty of elderly patients with diabetes， which can be considered as an indicator for early identification and screening of the frailty of elderly diabetes patients.

Objective:To investigate serum vitamin A and vitamin D status in children aged 2-<7 years in 20 cities in China.Methods:A cross-sectional study was conducted. A total of 2 924 healthy children aged 2-<7 years were recruited from September 2018 to September 2019 from 20 cities in China, categorized by age groups of 2-<3 years, 3-<5 years, and 5-<7 years. The demographic and economic characteristics and health-related information of the enrolled children were investigated. Body weight and height were measured by professional staff members. The serum vitamin A and vitamin D levels were detected by high-performance liquid chromatography-tandem mass spectrometry. Chi-square test and Logistic regression were applied to analyze the association between vitamin A and vitamin D deficiency and insufficiency as well as their underlying impact factors.Results:The age of the 2 924 enrolled children was 4.33 (3.42, 5.17) years. There were 1 726 males (59.03%) and 1 198 females (40.97%). The prevalences of vitamin A and vitamin D deficiency in enrolled children were 2.19% (64/2 924) and 3.52% (103/2 924), respectively, and the insufficiency rates were 29.27% (856/2 924) and 22.20% (649/2 924), respectively. Children with both vitamin A and vitamin D deficiencies or insufficiencies were found in 10.50% (307/2 924) of cases. Both vitamin A ( χ2=7.91 and 8.06, both P=0.005) and vitamin D ( χ2=71.35 and 115.10, both P<0.001) insufficiency rates were higher in children aged 3-<5 and 5-<7 years than those in children aged 2-<3 years. Vitamin A and vitamin D supplementation in the last 3 months was a protective factor for vitamin A and D deficiency and insufficiency, respectively ( OR=0.68 and 0.22, 95% CI 0.49-0.95 and 0.13-0.40, both P<0.05). The rates of vitamin A and D insufficiency was higher in children with annual household incomes <60 000 RMB than in those with annual household incomes ≥60 000 RMB ( χ2=34.11 and 10.43, both P<0.01). Northwest and Southwest had the highest rates of vitamin A and vitamin D insufficiency in children aged 2-<7 yeas, respectively ( χ2=93.22 and 202.54, both P<0.001). Conclusions:Among 20 cities in China, children aged 2-<7 years experience high rates of vitamin A and vitamin D insufficiency, which are affected by age, family economic level, vitamin A and vitamin D supplementation, and regional economic level. The current results suggest that high level of attention should be paid to vitamin A and vitamin D nutritional status of preschool children.

ObjectiveTo explore the distribution and characteristics of traditional Chinese medicine （TCM） syndromes in patients with endometriosis （EMS）. MethodA cross-sectional survey was conducted to analyze the characteristics of TCM syndromes in 1 895 cases of EMS in hospitals of 19 provinces， autonomous regions， and municipalities. ResultAmong the 1 895 patients， Qistagnation and blood stasis syndrome accounted for the highest proportion， followed by Qi deficiency and blood stasis syndrome， cold coagulation and blood stasis syndrome， and kidney deficiency and blood stasis syndrome. The distribution of TCM syndrome types of patients with EMS in different regions， different treatment stages， and different disease types and with different therapeutic goals was different， and the differences were statistically significant. However， under different conditions， the Qi stagnation and blood stasis syndrome accounted for the highest proportion. Under the stratification of different regions， the cold coagulation and blood stasis syndrome in north China was relatively high， the kidney deficiency and blood stasis syndrome in south China was relatively high， and the combined phlegm and stasis syndrome was relatively high in southwest China. Different diagnosis and treatment goals corresponded to different clinical syndromes. With pelvic pain as the main manifestation， the proportion of cold coagulation and blood stasis syndrome was higher. The proportion of kidney deficiency and blood stasis syndrome was higher in married patients with infertility. Patients with the main diagnosis and treatment goals of controlling mass and inhibiting recurrence had a higher proportion of Qi deficiency and blood stasis syndrome. In different treatment stages， the proportion of Qi deficiency and blood stasis syndrome in postoperative patients and those with recurrent EMS was higher. Among different disease types， the Qi deficiency and blood stasis syndrome accounted for a higher proportion in patients with ovarian endometriosis （OEM）. The cold coagulation and blood stasis syndrome accounted for a higher proportion in patients with deep invasive endometriosis （DIE）. The kidney deficiency and blood stasis syndrome accounted for a higher proportion in patients with peritoneal EMS. There were significant differences in age， body mass index （BMI）， and course of disease among patients with different syndromes. Patients with Qi deficiency and blood stasis syndrome was relatively older， and their course of the disease was relatively long. Patients with combined phlegm and stasis syndrome had relatively high BMI. There was no significant difference in CA125 and CA199 levels among all syndrome types. ConclusionThe distribution of TCM syndromes of EMS has a certain regularity， and there are differences in regional distribution， therapeutic goals， treatment stages， and disease types（P<0.05）. However， the Qi stagnation and blood stasis syndrome accounts for a large proportion under different conditions， suggesting that Qi stagnation is the key link of EMS. In the early stage， the team took relieving depression and activating blood as the primary treatment， and created Huoxue Xiaoyi prescription， which was the core prescription for the treatment of EMS with Qi stagnation and blood stasis syndrome， achieving good clinical effect. At the same time， it is emphasized that EMS treatment should be integrated into the concept of chronic disease management and combined with health management. Through psychological counseling， cognitive behavior intervention， popular science lectures， and other methods， it is advised to adjust the emotion of patients with EMS， thereby increasing the curative effect. This study is expected to provide references for the clinical treatment of EMS.

Radiotherapy is widely used in the management of advanced colorectal cancer (CRC). However, the clinical efficacy is limited by the safe irradiated dose. Sensitizing tumor cells to radiotherapy via interrupting DNA repair is a promising approach to conquering the limitation. The BRCA1-BARD1 complex has been demonstrated to play a critical role in homologous recombination (HR) DSB repair, and its functions may be affected by HERC2 or BAP1. Accumulated evidence illustrates that the ubiquitination-deubiquitination balance is involved in these processes; however, the precise mechanism for the cross-talk among these proteins in HR repair following radiation hasn't been defined. Through activity-based profiling, we identified PT33 as an active entity for HR repair suppression. Subsequently, we revealed that BAP1 serves as a novel molecular target of PT33 via a CRISPR-based deubiquitinase screen. Mechanistically, pharmacological covalent inhibition of BAP1 with PT33 recruits HERC2 to compete with BARD1 for BRCA1 interaction, interrupting HR repair. Consequently, PT33 treatment can substantially enhance the sensitivity of CRC cells to radiotherapy in vitro and in vivo. Overall, these findings provide a mechanistic basis for PT33-induced HR suppression and may guide an effective strategy to improve therapeutic gain.

Humans ; Waldenstrom Macroglobulinemia/genetics* ; East Asian People ; Chromosome Aberrations ; Lymphoma

Objective: To investigate the expression and molecular mechanism of dickkopf 1 ( DKK1 ) in tongue squamous cell carcinoma (TSCC) by bioinformatics method and molecular biology experiments． Methods: The patients information wasdownload from TCGA-TSCC database，the differentially expressed genes between the cancer and normal tissues were screened by NetworkAnalysed site，the key genes and clinical prognosis were identified through Kaplan-Meier analysis and Lasson regression，the functions and pathways of differentially expressed genes were gained by GO and KEGG database，the expression of DKK1 mRNA and protein in TSCC as well as its relationship with clinicopathological features were analyzed by UALCAN database and immunohistochemistry．Western blot assay was conducted to detect the protein expression of DKK1 in TSCC cells，and siRNA was used to konck down the expression of DKK1 protein in Cal27 cells. Results : The three key genes DKK1，CYP19A1 and IRX4， which were highly expressed in tongue squamous cell carcinoma and the survival rate of TSCC patients with high expression group was poor，were screened through NetworkAnalysed ，Kaplan-Meier analysis and Lasson regression method．UALCAN database showed that the mRNA level of DKK1 in TSCC tissues was higher than that in normal tissues，and its high expression was significantly correlated with clinical stage，histological grade and lymph node metastasis of TSCC patients．The immunohistochemistry assay suggested that the positive rate of DKK1 protein in clinical stage Ⅲ + Ⅳ TSCC tissues was significantly higher than that in stage Ⅰ + Ⅱ TSCC tissues．In addition， the expression level of DKK1 protein in TSCC tissues was significantly higher than that in adjacent tissues．Western blot assay also showed that the protein expression of DKK1 in TSCC cell Cal27 was much higher than normal oral epithelial cell HOEC．When knock down the protein expression of DKK1 in Cal27，the expression of β-catenin、p- p65 和 p65 werealso reduced． Conclusion DKK1 is highly expressed in tongue squamous cell carcinoma tissues and cells and plays an important role．It may be a new target for early diagnosis and drug treatment of TSCC.

Diabetic cognitive dysfunction, which refers to diabetes-induced impairment in language, visual memory, speed of information processing, and executive function, has been identified as a common complication of diabetes.It is highly prevalent in elderly diabetic patients.Therefore, it is necessary to understand the pathological structural changes and pathogenesis of diabetic cognitive dysfunction to help with early prevention and treatment of patients with clinical diabetic cognitive dysfunction.

Objective:To understand the cognition of research integrity of in-service medical staff in a tertiary hospital in Xinjiang, provide possible reference for research integrity training.Methods:In March 2021, an electronic questionnaire survey was conducted to investigate the knowledge of scientific research integrity of in-service medical staff in a tertiary hospital in Xinjiang. T test and analysis of variance were used for univariate analysis, and multiple linear regression was used for multivariate analysis.Results:550 valid questionnaires were collected in total, and the overall awareness rate of scientific research integrity of in-service medical staff was less than 60%. Univariate analysis showed that there were differences in cognitive score of scientific research integrity among medical staff who participating in different scientific research activities ( P<0.05). Multivariate analysis showed that the educational level of the in-service medical staff, whether they participated in scientific research training, whether they had the qualifications of graduate student supervisor, the interaction between educational level and participation in scientific research training was statistically significant ( P<0.05). LSD test of educational level and participation in scientific research training showed that there was a statistically significant difference in educational level of participation in scientific research training ( P<0.01). Conclusions:The cognition of research integrity on in-service medical staff in a tertiary hospital in Xinjiang need to be enhanced, and their knowledge of research integrity need to be improved. Various measures should be carried out to strengthen the research integrity education and training, so as to improve the level of medical staff’s cognition of research integrity, and improve the medical staff’s attitudes of research integrity.