BACKGROUND:Anthocyanin is one of the most important active components in Lycium ruthenicum Murr,which has antioxidant and immunomodulatory effects.CD146+human adipose-derived pericytes/perivascular cells(CD146+hAD-PCs)are the progenitors of bone marrow mesenchymal stem cells,which can promote the proliferation and differentiation of hematopoietic stem/progenitor cells in vitro.The support effect of anthocyanin in combination with CD146+hAD-PCs on umbilical cord blood hematopoietic stem/progenitor cells remains to be studied. OBJECTIVE:To investigate the supporting effect of anthocyanins in Lycium ruthenicum Murr(ALRM)combined with CD146+hAD-PCs on umbilical cord blood CD34+hematopoietic stem/progenitor cells(UCB CD34+HSPCs)in vitro. METHODS:The CCK-8 assay was used to detect the effect of different concentrations(0,200,400,600,800,1 000 mg/L)of ALRM on the proliferation of CD146+hAD-PCs.Flow cytometry was used to detect the effect of ALRM on the cell cycle of CD146+hAD-PCs.The co-culture experiments were divided into blank group,ALRM group,CD146+hAD-PCs group,and ALRM+CD146+hAD-PCs group to analyze the in vitro supporting effect of ALRM combined with CD146+hAD-PCs on UCB CD34+HSPCs.The number of expanded cells and the number of colony-forming units were compared at 1,2,and 4 weeks of co-culture.The immunophenotype of cells was detected by flow cytometry.The level of cytokines was detected by enzyme-linked immunosorbent assay. RESULTS AND CONCLUSION:(1)The cell viability of CD146+hAD-PCs was highest at an ALRM concentration of 200 mg/L,the proportion of G0/G1 phase cells decreased and the proportion of S and G2/M phase cells increased in CD146+hAD-PCs(P<0.01).(2)The change in number of UCB CD34+HSPCs cells in the ALRM+CD146+hAD-PCs group was higher than that in the ALRM group at 1,2,and 4 weeks of co-culture(all P<0.05),and higher than that in CD146+hAD-PCs group at 2 and 4 weeks of co-culture(all P<0.05).The number of cells in the ALRM group and blank group decreased gradually with the extension of co-culture time.(3)Colony forming capacity and immunophenotype analysis:The number of colony-forming units in the ALRM+CD146+hAD-PCs group was higher than that in the CD146+hAD-PCs group and ALRM group at 1 and 2 weeks of co-culture(P<0.05).The proportion of CD45+and CD34+CD33-cells in the ALRM+CD146+hAD-PCs group was higher than that in the CD146+hAD-PCs group at 1 and 2 weeks of co-culture(all P<0.01).(4)Changes in cytokines:Interleukin-2 level in the ALRM+CD146+hAD-PCs group was higher than that in the ALRM and CD146+hAD-PCs groups(P<0.05).The interleukin-3 content of the ALRM+CD146+hAD-PCs group was higher than that of the CD146+hAD-PCs group at 2 and 4 weeks(P<0.05).The expression level of granulocyte colony-stimulating factor in the ALRM+CD146+hAD-PCs group was higher than that in the CD146+hAD-PCs group at 1 week,and higher than that in the ALRM group and CD146+hAD-PCs group at 2 weeks(P<0.01).Interferon-γ content in the ALRM group and ALRM+CD146+hAD-PCs group was lower than that in the CD146+hAD-PCs group at 1,2,and 4 weeks of co-culture(P<0.01).(5)Due to the absence of stromal cells in the blank group,UCB CD34+HSPCs could not be counted after 1 week of co-culture and were not subjected to immunophenotyping,colony analysis,or cytokine assays.(6)In summary,ALRM can promote the expansion of UCB CD34+HSPCs in vitro by promoting CD146+hAD-PCs proliferation and cell cycle transformation,which is of great value in hematopoietic stem cell transplantation.

Objective To investigate the association of digit ratio with single nucleotide polymorphism(SNP)at three loci(rs17576,rs3918249,rs9509)of matrix metallopeptidase 9(MMP-9)gene.Methods A total of 804 Ningxia Han youths(399 males and 405 females)were used as the study subjects.A digital camera was used to take frontal photographs of the hands,and image analysis software was used to mark the anatomical points and measure the lengths of each finger of both hands(2D,3D,4D,5D);Multiplexed PCR was used to detect the three polymorphic sites of the MMP-9 gene,SPSS 25.0 and R Studio software were used for data analysis and plotting.Results The 2D/3D(P＜0.05)and 2D/4D(left,P＜0.01,right,P＜0.05)of both hands,2D/5D(P＜0.01),3D/5D,4D/5D(P＜0.05)of the right hand,and 3D/4D(P＜0.05)of the left hand in female youths of Ningxia Han were significantly higher than those in males,Differences in genotypes and allele frequencies at all 3 loci of the MMP-9 gene were not statistically significant between genders(P＞0.05).Right hand 2D/4D was significantly associated with genotypes at the rs17576 and rs3918249 loci in male youths(P＜0.05).Conclusion MMP-9 gene SNPs(rs17576 and rs3918249)may be associated with the formation of 2D/4D of Ningxia Han male youths.

Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by persistent inflammation and joint damage, accompanied by the accumulation of plasma cells, which contributes to its pathogenesis. Understanding the genetic alterations occurring during plasma cell differentiation in RA can deepen our comprehension of its pathogenesis and guide the development of targeted therapeutic interventions. Here, our study elucidates the intricate molecular mechanisms underlying plasma cell differentiation by demonstrating that PRDX1 interacts with DOK3 and modulates its degradation by the autophagy-lysosome pathway. This interaction results in the inhibition of plasma cell differentiation, thereby alleviating the progression of collagen-induced arthritis. Additionally, our investigation identifies Salvianolic acid B (SAB) as a potent small molecular glue-like compound that enhances the interaction between PRDX1 and DOK3, consequently impeding the progression of collagen-induced arthritis by inhibiting plasma cell differentiation. Collectively, these findings underscore the therapeutic potential of developing chemical stabilizers for the PRDX1-DOK3 complex in suppressing plasma cell differentiation for RA treatment and establish a theoretical basis for targeting PRDX1-protein interactions as specific therapeutic targets in various diseases.

Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.

Objective To observe the effects of Ditan Yizhi Decoction on Wnt/β-catenin signaling pathway and mitochondrial autophagy in vascular dementia(VD)rats.Methods Totally 70 male SD rats were randomly selected as the sham-operation group,with only the common carotid artery isolated and not ligated,and the rest of the rats were used to prepare a rat model of VD by the modified bilateral common carotid artery permanent ligature method.The successfully modeled rats were randomly divided into model group,donepezil group,agonist group and Ditan Yizhi Decoction low-,medium-and high-dosage groups and were given corresponding interventions for 4 weeks.Morris water maze experiment was used to assess the learning and memory ability of rats,HE staining and Nissl staining were used to observe the morphology of hippocampal tissue,transmission electron microscopy was used to observe the ultrastructure of hippocampal neuron,Western blot was used to detect the expressions of PINK1,Parkin,p62,Beclin-1,LC3BⅡ/Ⅰ,β-catenin,GSK-3β,p-GSK-3β protein.Results Compared with the sham-operation group,rats in the model group had a prolonged escape latency(P<0.01),a reduced number of crossing platforms(P<0.01);neuronal gaps in the CA1 area of the hippocampus were enlarged,with irregular cell morphology and blurred borders,neuronal solidification,Nissl bodies dissolution and fragmentation,reduced quantity,mitochondrial cristae disorder,and disruption of the structure of the bilayer membrane,with a greater number of autophagosomes in the surroundings;the expressions of PINK1,Parkin,Beclin-1,LC3BⅡ/I,β-catenin,p-GSK-3β/GSK-3β protein were significantly increased(P<0.01),and p62 protein expression was significantly decreased(P<0.01).Compared with the model group,the escape latency of rats in donepezil group,agonist group and Ditan Yizhi Decoction low-,medium-and high-dosage groups were significantly shortened(P<0.01),and the number of crossing platforms significantly increased(P<0.05,P<0.01);the number of neurons in the hippocampal CA1 region increased,with normal morphology and orderly arrangement,Nissl bodies were abundant,and transmission electron microscopy showed that mitochondrial morphology recovered,rupture decreased,and autophagosomes around mitochondria decreased,the protein expressions of PINK1,Parkin,Beclin-1,LC3BⅡ/Ⅰ,β-catenin and p-GSK-3β/GSK-3β in hippocampal tissue were significantly decreased(P<0.01),the protein expression of p62 significantly increased(P<0.05,P<0.01).Conclusion Ditan Yizhi Decoction can improve learning memory ability and neuronal morphology in VD rats,and its mechanism may be related to the activation of Wnt/β-catenin signaling pathway to inhibit mitophagy.

Objective To observe the effects of Ditan Yizhi Decoction on mitochondrial dynamics-mediated glucose metabolism in vascular dementia(VaD)rats based on the ROS/Drp1 axis;To explore its mechanism in treating VaD.Methods Ten male SD rats were randomly selected from 70 as the sham-operation group,and VaD models were prepared using the modified bilateral common carotid artery permanent ligation method for the remaining rats.The successfully modeled rats were randomly divided into model group,positive drug group(donepezil hydrochloride),inhibitor group(Mdivi-1)and Ditan Yizhi Decoction low-,medium-and high-dosage groups(12.86,25.725,51.45 g/kg),and intervened with corresponding method for 4 consecutive weeks.Morris water maze experiment was used to assess the learning memory ability of rats,HE and Nissl staining were used to observe the morphology of hippocampal tissue,transmission electron microscopy was used to observe the mitochondrial ultrastructure of hippocampal neurons,DHE fluorescent probe was used to detect the content of ROS in hippocampal neurons,Western blot was used to detect the expressions of Drp1,p-Drp1,Mfn2,Opa1,HK1,PKM2,GLUT1 and LDHA,the contents of serum IL-1β,IL-6 and TNF-α were detected by ELISA.Results Compared with the sham-operation group,rats in the model group had a prolonged escape latency(P<0.01)and a reduced number of crossing platforms(P<0.01);neuronal gaps in the CA1 region of the hippocampus were enlarged,with irregular cell morphology and blurred borders,neuronal consolidation,lysis and fragmentation of Nissl bodies and reduced number of Nissl bodies,swelling and deformation of mitochondria,disorganization of the cristae,and disruption of the bilayer membrane structure;the content of ROS in CA1 region of the hippocampus was elevated,the protein expressions of Mfn2 and Opa1 significantly decreased(P<0.01),the expressions of p-Drp1,HK1,PKM2,GLUT1,LDHA proteins significantly increased(P<0.01),and serum contents of IL-1β,IL-6 and TNF-α significantly increased(P<0.01).Compared with the model group,the escape latency was significantly shortened in Ditan Yizhi Decoction groups,positive drug group and inhibitor group(P<0.01),and the number of crossing platforms increased(P<0.05,P<0.01);the number of neurons in the hippocampal CA1 region increased,with normal morphology,orderly arrangement,abundant Nissl bodies,recovered mitochondrial morphology,and decreased rupture;the ROS content in hippocampal CA1 region decreased(P<0.01),while the expressions of Mfn2 and Opa1 proteins increased(P<0.01),the expressions of p-Drp1,HK1,PKM2,GLUT1 and LDHA proteins decreased(P<0.01),and the serum contents of IL-1β,IL-6 and TNF-α decreased(P<0.05).Conclusion Ditan Yizhi Decoction can improve cognitive impairment and neuronal morphology in VaD rats,and the mechanism maybe related to regulation of mitochondrial dynamics through the ROS/Drp1 axis,attenuating glycometabolic disorders,and reducing inflammatory response.

Focusing on effective methods and strategies for diabetes prevention in primary healthcare settings globally, this study constructs a comprehensive clinical prevention framework tailored for community health institutions. The framework encompasses continuous prevention services across the entire diabetes cycle, targeting all population segments—including healthy individuals, those with prediabetes, early-stage diabetes, and individuals in clinical or rehabilitation phases—to establish a systematic five-level prevention system. Through comprehensive and systematic implementation of preventive activities at all levels, this approach aims to achieve universal, systematic, and sustainable diabetes prevention and control, thereby offering insights for integrated diabetes management.

Since 2017, Changfeng Community Health Service Center in Putuo District, Shanghai, has innovatively integrated the "Dual-Contracting" program by combining integrated general-specialist outpatient services with teaching clinics. This integration has progressively evolved into a comprehensive general practitioner (GP) training model. This model cultivates competencies encompassing: core service delivery, specialized disease diagnosis and treatment, complex case management, chronic disease management within specialties, teaching and mentoring skills, and capacities for self-reflection and continuous learning. It effectively bridges the training objectives and needs for GPs across both pre-service and in-service stages. Against the backdrop of senior medical experts being deployed to primary care settings, this model not only systematically enhances the professional competencies of community GPs but also optimizes medical resource utilization and elevates the overall quality of healthcare services.