Platelets are small, anucleated cells generated by cytoplasmic fragmentation and shedding from mature megakaryocytes. Upon vascular stimulation or injury, platelets become activated and adhere to exposed vascular endothelial cells, ultimately forming thrombi to promote blood coagulation and wound healing. In recent years, increasing evidence from in-depth studies on platelet function has revealed that autophagy plays a crucial role in platelet production and functional performance. Autophagy is an intracellular process of material recycling and reuse, involving autophagosome formation, cargo degradation, and nutrient recycling, which facilitates the maintenance of homeostasis and defense against pathogen infection. Numerous studies have demonstrated that autophagy participates in the regulation of platelet production, activation, and aggregation, and is closely implicated in the pathogenesis of platelet dysfunction-related diseases such as immune thrombocytopenia. Additionally, platelet-rich plasma therapy, by modulating the autophagic process, has shown great potential in treating osteoarthritis and promoting diabetic foot wound healing. This review thoroughly explores the potential roles of autophagy in regulating platelet production and function, as well as in platelet-related diseases. Future research should focus on the molecular mechanisms of platelet autophagy, investigate its dynamic changes under different disease conditions, and explore how autophagy modulation can improve platelet function and treat related diseases. This will provide a theoretical foundation for developing novel therapeutic strategies and is expected to bring breakthroughs in the treatment of platelet-related diseases.

Hypertension ranks among the most prevalent chronic non-communicable diseases worldwide, with its prevalence rising steadily and exerting substantial impacts on the demographic composition of voluntary blood donors and the safety of blood supply. The eligibility of hypertensive individuals for safe blood donation and the relevant screening and management strategies have long remained controversial in transfusion medicine. This article systematically reviews the epidemiological characteristics of hypertension, donation-related physiological alterations and underlying risk mechanisms. By synthesizing evidence from international multicenter studies and regulatory practices across major nations, it conducts a comprehensive analysis of blood donation safety and donor admission criteria for hypertensive patients. Available evidence demonstrates that for hypertensives with well-stabilized blood pressure and no severe cardiac, cerebral or renal complications or target organ damage, the overall incidence of adverse reactions following blood donation is comparable to that in healthy donors, and no definitive correlation has been identified between blood pressure levels and vasovagal responses. Current mainstream international management frameworks are gradually shifting from screening reliant on a single blood pressure cutoff value toward an integrated strategy combining stratified risk classification and individualized dynamic assessment, with core focus on long-term blood pressure control, consistency of medication regimens and complication status. Meanwhile, emerging technologies including artificial intelligence, ambulatory blood pressure monitoring and wearable devices have opened innovative avenues for blood donation risk evaluation and full-cycle donor management. In light of existing clinical evidence, future efforts should further refine the multi-dimensional risk stratification system, facilitate the implementation of intelligent screening and continuous monitoring technologies, and scale up health education and follow-up management for hypertensive populations. Such measures aim to appropriately expand the pool of eligible blood donors while safeguarding donation safety, ultimately achieving coordinated improvement in blood safety and blood supply capacity.

Alzheimer's disease （AD） is a chronic neurodegenerative disorder with an unclear pathogenesis and currently no cure. It is characterized by a long disease course， diverse symptoms， and a persistent， difficult-to-treat nature， which greatly affects the quality of life of elderly patients. Traditional Chinese medicine （TCM） offers significant advantages in the treatment of AD， featuring multi-component， multi-target， and multi-pathway characteristics， with few adverse reactions and good safety. Angelica sinensis is a commonly used medicinal herb. As a frequently used clinical medicine for nourishing and activating blood， it shows significant efficacy in treating blood deficiency syndrome. In recent years， studies have revealed that A. sinensis exhibits significant activity in the prevention and treatment of AD. It contains various active components such as organic acids， volatile oils， and polysaccharides， and possesses pharmacological effects including anti-inflammatory， antioxidant， hepatoprotective， and neuroprotective properties. This article summarizes and outlines the mechanisms of A. sinensis and its compound formulas in the prevention and treatment of AD， providing a reference for its clinical application and the treatment of AD.

Objective:To explore the application effect of comfort-based light sedation strategy nursing model in early rehabilitation exercises for critically ill patients after gastrointestinal surgery, aiming to provide a reference for the recovery of patients after gastrointestinal surgery.Methods:A randomized controlled trial was conducted using purposive sampling to select 110 critically ill patients who underwent gastrointestinal surgery from July 2022 to December 2023 in the Department of Critical Care Medicine of Shantou Central Hospital. Patients were randomly assigned into the control group and the observation group, with 55 cases in each group. The control group received routine sedation care, while the observation group adopted a comfort-based light sedation strategy nursing model. The NRS (Digital Rating Scale for Pain), RASS (Rationalizing Self-Assessment Scale), SAS (Self-Rating Anxiety Scale), analgesic and sedative drug usage, postoperative bowel sounds, flatus, and defecation onset time, ICU length of stay, delirium incidence, postoperative 24-hour MRC muscle strength score, and discharge Modified Barthel Index (MBI) scores were compared between the two groups at 8 hours, 24 hours, 48 hours, 72 hours, and 96 hours postoperatively.Results:During the study, 5 cases dropped out from both the observation and control groups, leaving 50 cases each complete. The control group consisted of 32 males and 18 females, with an average age of (66.94 ± 14.39) years; the observation group consisted of 34 males and 16 females, with an average age of (68.01 ± 14.76) years. At 8, 24, 48, 72, 96 hours postoperatively, the NRS scores for the observation group were (3.11 ± 0.58), (3.14 ± 0.53), (3.09 ± 0.56), (2.97 ± 0.50), and (2.48 ± 0.45), respectively, were all lower than those of the control group (3.55 ± 0.61), (3.46 ± 0.59), (3.42 ± 0.62), (3.38 ± 0.54), (2.87 ± 0.53), with statistically significant differences ( t values were 2.80 - 3.97, all P<0.05). The RASS scores at postoperative 8, 24, 48, 72, 96 hours were (- 1.42 ± 0.43), (- 1.41 ± 0.42), (- 1.39 ± 0.44), (- 1.36 ± 0.41), (- 1.32 ± 0.40) respectively, compared to the control group (- 1.85 ± 0.47), (- 1.78 ± 0.44), (- 1.81 ± 0.50), (- 1.80 ± 0.48), (- 1.68 ± 0.45), with statistically significant differences ( t values were 4.23 - 4.93, all P<0.05). The SAS scores at postoperative 48, 72, 96 hours were (49.68 ± 4.55), (48.69 ± 4.41), (46.71 ± 4.33) respectively, compared to the control group (53.75 ± 4.76), (53.13 ± 4.69), (52.84 ± 4.51), with statistically significant differences ( t = 4.37, 4.89, 6.93, all P<0.05); the propofol dosage in the observation group (3 228.52 ± 587.78) mg and the dexmedetomidine dosage (1 205.58 ± 311.46) μg were all lower than those of the control group (4 056.77 ± 638.04) mg and (1 650.77 ± 432.69) μg, with statistically significant differences ( t = 6.75, 5.92, both P<0.05). The start time of bowel sounds in the observation group was (18.63 ± 5.96) hours, the start time of flatus was (1.42 ± 0.57) days, and the start time of defecation was (2.02 ± 1.25) days. The ICU hospitalization duration of the observation group (5.54 ± 1.51) days was shorter than that of the control group (7.36 ± 1.89) days, with differences being statistically significant ( t values were 2.71 - 5.32, all P<0.05). The postoperative delirium incidence rate of the observation group was 8.00% (4/50) lower than that of the control group 24.00% (12/50), with differences being statistically significant ( χ2 = 4.76, P<0.05). The postoperative 24-hour MRC muscle strength score (5.34 ± 0.58) and the discharge MBI score (77.56 ± 11.34) in the observation group were both significantly higher than those of the control group (4.79 ± 0.65) and (68.25 ± 10.47), respectively ( t = 4.46, 4.27, both P<0.05). Conclusions:The comfort-oriented light sedation strategy nursing model can improve the postoperative sedation and analgesia effects for ICU gastrointestinal surgery patients, promote gastrointestinal function recovery, shorten ICU hospital stay, reduce delirium incidence, and accelerate patient postoperative recovery.

Objective To evaluate the effect of dapagliflozin on myocardial function in early spontaneously hypertensive rats(SHR)with layer-specific global longitudinal strain(GLS).Methods A total of 45 male SHR aged 6 weeks were randomly divided into control group(normal saline),dapagliflozin group[1 mg/(kg·day)],and losartan group[10 mg/(kg·day)].Fifteen male Wistar-Kyoto(WKY)rats at same age with normal blood pressure were subjected and served as blank control group.During 8 weeks of intervention,systolic blood pressure(SBP)was measured,and conventional echocardiography and two-dimensional speckle tracking echocardiography(2DSTE)were performed and the results were collected to acquire the longitudinal strain of each layer of left ventricular(LV)myocardium.The parameters were compared among the groups.The pathological changes of myocardium were observed in each group of rats.Results Compared with the WKY group,LV ejection fraction(LVEF)and LV fraction shortening(LVFS)at week 8 were decreased in the control group(P＜0.05),but no such decreases were observed in the dapagliflozin group and the losartan group.The GLS of endo-myocardium(GLSendo)at the 6th week was decreased,and GLSendo,GLSmid and GLSepi at the 8th week were all decreased in the control group than the WKY group(all P＜0.05).But there were no statistical differences in the above 3 indicators in the dapagliflozin and losartan groups when compared with the WKY group(all P＞0.05).The pathological results showed that myocardial interstitial fibrosis was observed in the control group at the 6th week.Conclusion Dapagliflozin can effectively improve myocardial function in early SHR.

This article reviews a study from Cell Metabolism, titled "Transketolase promotes MAFLD by limiting inosine-induced mitochondrial activity" [Tong L, Chen Z, Li Y, et al. Cell Metab. 2024, 36(5): 1013-1029.e5], and discusses its scientific implications. The study explores selective hepatic insulin resistance in metabolic dysfuction-associated fatty liver disease(MAFLD), where insulin stimulates lipid synthesis but not gluconeogenesis in resistant livers. It reveals the key role of transketolase(TKT) in MAFLD progression by disrupting pentose metabolism and nucleoside homeostasis, leading to inhibited mitochondrial activity. Targeting TKT with N-acetylgalactosamine-conjugated small interfering RNA(GalNAc-siTKT) improved metabolic dysfunction-associated steatohepatitis(MASH) and hepatic fibrosis.

Objective:To analyze the clinical features and genetic sequencing results of a patient with Kallmann syndrome(KS) carrying digenic mutations who initially presented with osteoporosis, and to enhance awareness of this disease phenotype.Methods:Clinical data were collected, and peripheral blood DNA was extracted for whole-exome sequencing. Relevant literature was reviewed to summarize phenotypes associated with digenic/oligogenic variants involving CHD7.Results:The patient exhibited back pain, delayed development of secondary sexual characteristics, and hyposmia. Laboratory tests revealed reduced sex hormones and gonadotropin levels, while pituitary imaging was unremarkable. Bone mineral density imaging confirmed osteoporosis, and thoracolumbar X-rays showed multiple vertebral compression fractures. Genetic analysis identified a heterozygous splice-site mutation in CHD7(c.2698-1G>T) and a heterozygous missense mutation in WDR11(c.439G>A: p.D147N). According to ACMG criteria, the CHD7 mutation was classified as pathogenic, while the WDR11 variant was defined as a variant of uncertain significance(VUS). Literature review indicated that 40% of KS patients with digenic/oligogenic variants involving CHD7 presented with hearing or ocular abnormalities.Conclusion:This study reports a novel CHD7 mutation and a previously undescribed digenic combination of CHD7 and WDR11 variants in a KS patient. CHD7 variants may be implicated in auditory or ocular involvement in KS cases with digenic/oligogenic inheritances. KS patients may also manifest skeletal abnormalities in addition to hypogonadotropic hypogonadism. Tailored management of sex hormones and osteoporosis therapies across life stages is essential for optimizing bone health in KS.

Objective:To examine the validity and reliability of the Chinese version of the Mentalization Questionnaire(MZQ)in a sample of Chinese college students.Methods:Totally 3 985 college students were select-ed and randomly divided into Sample 1(n=1 992)and Sample 2(n=1 993).Sample 1 was used to test explorato-ry factor analysis,Sample 2 was used to test criterion-related validity and internal consistency reliability.Totally 596 students were randomly selected from Sample 2,which was subjected to validation factor analysis.After 1 week of initial testing,85 individuals were randomly selected from the total sample for retesting.The Reflective Functioning Questionnaire(RFQ-8)was used to test criterion-related validity.Results:Multiple exploratory factor analyses were conducted on the single-factor structure,and 9 items were finally retained.Validation factor analyses indicated a good fit of the single-factor structure(x2=131.01,x2/df=4.83,P＜0.001,NFI=0.94,CFI=0.95,GFI=0.95,IFI=0.95,TLI=0.93,RMSEA=0.08).The Chinese version of the MZQ scores were negatively correlated with the RFQ-C scores(r=-0.59,P＜0.01),and positively correlated with the RFQ-U scores(r=0.28,P＜0.01).The Cronbach α coefficient of the Chinese version of MZQ was 0.89,and the retest reliability(ICC)was 0.82.Conclusion:The Chinese version of the Mentalization Questionnaire(MZQ)has ideal validity and reliability in Chinese college students.

Objective Taking into account the physical and mental characteristics of patients with COPD,we develop and implement a lung rehabilitation education game software,aiming to explore more effective health education practices for COPD.Methods Drawing on the Health Belief Model theory,the game content was developed by semi-structured interviews,brainstorming sessions,and expert consultations,and it was implemented via a WeChat mini program.Patients with COPD from the respiratory department of a tertiary general hospital of Luzhou city between March and October 2023 were conveniently selected as the study subjects.Among them,40 patients from July to October 2023 were designated as an experimental group,and another 40 from March to June 2023 constituted a control group.The experimental group was provided with routine health education combined with pulmonary rehabilitation games,whereas the control group received standard health education.After the intervention,the researchers compared the COPD knowledge questionnaire scores and pulmonary rehabilitation adherence between the 2 groups,and assessed the satisfaction of both patients and nurses with the software.Results No sample detachment.The score of the COPD knowledge questionnaire in the experimental group was higher than that in the control group,and the difference was statistically significant(Z=5.361,P＜0.001).The proportion of patients in the experimental group with good adherence to pulmonary rehabilitation(85％)was significantly higher than it in the control group(25％),(x2=29.091,P＜0.001).The patients'overall satisfaction rate with the game was 95％,with operational effectiveness receiving the highest satisfaction rating at 97％.Conclusion The pulmonary rehabilitation education game for patients with COPD can improve their knowledge of COPD,enhance their compliance with pulmonary rehabilitation.Patients have high satisfaction with the software.The software enriches the clinical health education methods,which can be used in clinical practice.

Objective:To explore the role of glutathione peroxidase 4 (GPX4)-dependent ferroptosis in diclofenac-induced kidney injury.Methods:Human kidney tubular epithelial cells (HK-2 cells) were cultured and then divided into 3 groups: control group, diclofenac group, and iron death inhibitor ferrostatin-1 (Fer-1) group. The same amount of 1% Fer-1 (final concentration 10 μmol/L) and phosphate buffered saline was respectively added to cells in the Fer-1 group and the other 2 groups. After 48 hours of culture, diclofenac 200 μmol/L was added to cells in the diclofenac group and the Fer-1 group. The cell viability of each group was detected by cell counting kit-8 (CCK-8). The cell cycle, apoptosis and intracellular reactive oxygen species (ROS) levels were detected by flow cytometry. The levels of intracellular iron ion, lactate dehydrogenase (LDH), malondialdehyde (MDA) and GPX4 were detected by enzyme-linked immunosorbent assay. The expression level of GPX4 was detected by Western blotting method.Results:Compared with the control group, the cell viability and G1 phase cell percentage of the diclofenac group were significantly lower, and compared with the diclofenac group, those were significantly higher (all P<0.05). The apoptosis rate of diclofenac group was significantly higher than that of the control group ( P<0.05), but there was no significant difference in apoptosis rate between Fer-1 group and diclofenac group ( P>0.05). Compared with the control group, the intracellular ROS, iron content, LDH, and MDA levels were significantly higherin the diclofenac group, while the expression level of GPX4 was lower (all P<0.05). However, the ROS, iron content, LDH, and MDA levels in the Fer-1 group were lower than those in the diclofenac group, while GPX4 expression was higher than that in the diclofenac group (all P<0.05). Conclusion:Diclofenac can induce ferroptosis in HK-2 cells and inhibiting the ferroptosis can alleviate cell injury, suggesting that GPX4-dependent ferroptosis may be involved in kidney injury induced by diclofenac.