1.Skeleton Binding Protein 1 of Plasmodium berghei Influences Deformability and Cytoskeletal Ultrastructure of Infected Erythrocyte
Xin-Yue GUO ; Huan-Qi ZHAO ; Yan-Xuan ZHONG ; Ru-Meng JIANG ; Yao-Xian LI ; Lei-Ting PAN ; Qian WANG ; Xiao-Yu SHI
Progress in Biochemistry and Biophysics 2026;53(4):1015-1027
ObjectiveThe malaria parasites remodel the host erythrocyte structure by exporting parasite proteins that interact with the membrane skeleton proteins of red blood cells (RBCs), facilitating their intracellular survival and pathogenicity. Skeleton-binding protein 1 (SBP1) is a conserved exported protein across Plasmodium species. In Plasmodium falciparum, SBP1 has been reported to interact with erythrocyte membrane skeleton proteins 4.1R and spectrin, while its contribution to erythrocyte remodeling and parasite virulence in Plasmodium berghei (Pb) remains unclear. This study aims to determine whether PbSBP1 associates with the host cytoskeletal protein 4.1R and to investigate its role in the remodeling of host RBCs and the pathogenicity of Plasmodium berghei. MethodsIn Plasmodium berghei, the relationship between PbSBP1 and the erythrocyte cytoskeletal protein 4.1R was examined using co-immunoprecipitation. A Pbsbp1 gene knockout mutant of Plasmodium berghei (Pbsbp1∆) was generated based on the principle of double crossover homologous recombination. The deformability of erythrocytes infected with Pbsbp1∆ parasites was assessed using microfluidic methods. Microchannels with an array of cylindrical pillars were used to detect modifications in infected RBC deformability. The infected RBCs were squashed between the rows and recovered between the columns and the transit velocity (μm/s) of infected RBCs travelling through the microchannel was recorded. The component of the erythrocyte membrane skeleton junctional complex, tropomodulin (TMOD), was fluorescently labeled, and the cytoskeletal network of infected erythrocytes was imaged using super-resolution stochastic optical reconstruction microscopy (STORM) to analyze ultrastructural changes in the cytoskeleton of wild-type (WT) and Pbsbp1∆-infected erythrocytes. Actin-based junctional complexes were displayed as individual clusters by the labeled TMOD in the STORM images, and the cluster densities and distances between adjacent clusters of infected RBCs were calculated. Additionally, rodent malaria models (BALB/c mice) and experimental cerebral malaria models (C57BL/6 mice) were employed to monitor the growth of Pbsbp1∆ and WT parasites during the intraerythrocytic stage and their capacity to induce cerebral malaria in mice. ResultsPbSBP1 may participate in the remodeling of infected erythrocytes through direct or indirect interaction with the erythrocyte cytoskeletal protein 4.1R. Microfluidic assays revealed that the deformability of erythrocytes infected with Pbsbp1∆ parasites was significantly enhanced compared to those infected with WT parasites. STORM imaging further demonstrated that the ultrastructure of the erythrocyte cytoskeleton in Pbsbp1∆-infected cells was altered relative to that in WT-infected erythrocytes. The distances between nearest neighbors of clusters had a tendency to increase while the cluster densities were decreased in Pbsbp1∆-infected RBCs compared to WT-infected RBCs. Subsequent phenotypic analysis indicated that the growth rate of Pbsbp1∆ parasites during the intraerythrocytic stage was significantly slower than that of WT parasites, and their ability to induce cerebral malaria in mice was also attenuated. These findings suggest that PbSBP1 is involved in the remodeling of the erythrocyte membrane skeleton, likely through its direct or indirect interaction with protein 4.1R, thereby regulating the deformability of infected erythrocytes and influencing the pathogenicity of the blood-stage parasites. ConclusionThis study establishes a role for PbSBP1 in host erythrocyte remodeling and parasite virulence, providing new research strategies for the prevention and treatment of malaria.
2.The Use of an Ultrasonic Osteotome Device in Uniportal Endoscopic Lumbar Interbody Fusion: Technical Notes and Early Outcomes
Xian Jun NGOH ; Yee Gen LIM ; Lei JIANG
Journal of Minimally Invasive Spine Surgery and Technique 2026;11(1):118-123
Ultrasonic bone-cutting instruments have gained traction in open and minimally invasive spine surgery because of their selective bone-cutting capability while preserving adjacent soft-tissue structures. However, their use in uniportal endoscopic spine surgery has not been reported in the peer-reviewed literature. This technical note describes a uniportal endoscopic surgical technique that uses an ultrasonic osteotome for uniportal endoscopic lumbar interbody fusion (U-ELIF) and reports preliminary outcomes. Specifically, we describe the technical nuances of ultrasonic osteotome use in U-ELIF and evaluate its feasibility and safety, with an emphasis on minimizing complications.
3.Research on proactive pharmaceutical service model of discharge medication order review and medication education under resident pharmacist system
Wenxu SUN ; Xinyue YOU ; Xian JIANG ; Fengbo WU
China Pharmacy 2025;36(10):1243-1247
OBJECTIVE To develop a pharmaceutical service model for discharge medication order review and medication education (hereinafter referred to as the “proactive pharmaceutical service model”), and evaluate its effects. METHODS The data of discharged patients were collected retrospectively from Rheumatology and Immunology Department of our hospital during January to June 2023 and January to June 2024. Patients discharged from January to June 2024 were classified as the intervention group (489 cases), while patients discharged from January to June 2023 were classified as the control group (535 cases) based on the different pharmaceutical service models they received. The control group received traditional service model, and the intervention group additionally got proactive pharmaceutical service model based on the control group. The primary outcome measures [the number of discharge medications, the number of medication errors, and the occurrence of adverse drug-drug interaction (DDI)] and follow-up outcome measures (the adjustment of medication regimen due to intolerance, unplanned hospital admissions, and proactive seeking of pharmaceutical services after discharge) were compared between the two groups. The discharge medication order review status, the occurrence of adverse DDI in patients with polypharmacy, and bedside medication education status for patients receiving the proactive pharmaceutical service model were all recorded. RESULTS From January to June 2024, a total of 1 052 discharge medication order review for inpatients were reviewed, and 174 instances of medication errors were identified. Polypharmacy was observed in 579 patients, with an incidence rate of 55.04%. The incidence of adverse DDI was significantly higher in patients with polypharmacy compared to those without polypharmacy (P<0.001). Pharmacists completed medication guidance for 394 instances of high-risk patients prone to the incidence rate of medication errors at home. The number of discharge medications, the incidence rate of medication errors, instances of medication not matching the diagnosis, dosage and administration errors, adverse DDI, and the incidence rate of patients who required adjustment of medication regimen due to intolerance were all significantly lower in the intervention group compared to the control group (P<0.05). Additionally, the incidence rate of patients who proactive seeking of pharmaceutical services after discharge was significantly higher in the intervention group compared to the control group (P<0.05). However, there was no significant difference in the incidence rate of unplanned hospital admissions between the two groups (P>0.05). CONCLUSIONS The established proactive pharmaceutical service model can reduce medication errors, enhance patient recognition of pharmaceutical services, and ensure medication safety for discharged patients at home.
4.Ras Guanine Nucleotide-Releasing Protein-4 Inhibits Erythropoietin Production in Diabetic Mice with Kidney Disease by Degrading HIF2A
Junmei WANG ; Shuai HUANG ; Li ZHANG ; Yixian HE ; Xian SHAO ; A-Shan-Jiang A-NI-WAN ; Yan KONG ; Xuying MENG ; Pei YU ; Saijun ZHOU
Diabetes & Metabolism Journal 2025;49(3):421-435
Background:
In acute and chronic renal inflammatory diseases, the activation of inflammatory cells is involved in the defect of erythropoietin (EPO) production. Ras guanine nucleotide-releasing protein-4 (RasGRP4) promotes renal inflammatory injury in type 2 diabetes mellitus (T2DM). Our study aimed to investigate the role and mechanism of RasGRP4 in the production of renal EPO in diabetes.
Methods:
The degree of tissue injury was observed by pathological staining. Inflammatory cell infiltration was analyzed by immunohistochemical staining. Serum EPO levels were detected by enzyme-linked immunosorbent assay, and EPO production and renal interstitial fibrosis were analyzed by immunofluorescence. Quantitative real-time polymerase chain reaction and Western blotting were used to detect the expression of key inflammatory factors and the activation of signaling pathways. In vitro, the interaction between peripheral blood mononuclear cells (PBMCs) and C3H10T1/2 cells was investigated via cell coculture experiments.
Results:
RasGRP4 decreased the expression of hypoxia-inducible factor 2-alpha (HIF2A) via the ubiquitination–proteasome degradation pathway and promoted myofibroblastic transformation by activating critical inflammatory pathways, consequently reducing the production of EPO in T2DM mice.
Conclusion
RasGRP4 participates in the production of renal EPO in diabetic mice by affecting the secretion of proinflammatory cytokines in PBMCs, degrading HIF2A, and promoting the myofibroblastic transformation of C3H10T1/2 cells.
5.Ras Guanine Nucleotide-Releasing Protein-4 Inhibits Erythropoietin Production in Diabetic Mice with Kidney Disease by Degrading HIF2A
Junmei WANG ; Shuai HUANG ; Li ZHANG ; Yixian HE ; Xian SHAO ; A-Shan-Jiang A-NI-WAN ; Yan KONG ; Xuying MENG ; Pei YU ; Saijun ZHOU
Diabetes & Metabolism Journal 2025;49(3):421-435
Background:
In acute and chronic renal inflammatory diseases, the activation of inflammatory cells is involved in the defect of erythropoietin (EPO) production. Ras guanine nucleotide-releasing protein-4 (RasGRP4) promotes renal inflammatory injury in type 2 diabetes mellitus (T2DM). Our study aimed to investigate the role and mechanism of RasGRP4 in the production of renal EPO in diabetes.
Methods:
The degree of tissue injury was observed by pathological staining. Inflammatory cell infiltration was analyzed by immunohistochemical staining. Serum EPO levels were detected by enzyme-linked immunosorbent assay, and EPO production and renal interstitial fibrosis were analyzed by immunofluorescence. Quantitative real-time polymerase chain reaction and Western blotting were used to detect the expression of key inflammatory factors and the activation of signaling pathways. In vitro, the interaction between peripheral blood mononuclear cells (PBMCs) and C3H10T1/2 cells was investigated via cell coculture experiments.
Results:
RasGRP4 decreased the expression of hypoxia-inducible factor 2-alpha (HIF2A) via the ubiquitination–proteasome degradation pathway and promoted myofibroblastic transformation by activating critical inflammatory pathways, consequently reducing the production of EPO in T2DM mice.
Conclusion
RasGRP4 participates in the production of renal EPO in diabetic mice by affecting the secretion of proinflammatory cytokines in PBMCs, degrading HIF2A, and promoting the myofibroblastic transformation of C3H10T1/2 cells.
6.Clinical and genetic characteristics of 14 children with sodium taurocholate co-transporting polypeptide deficiency
Rui-Xue MA ; Wen-Hai LUO ; Yi-Lin DAI ; Gui-Xian LI ; Fei WANG ; Ou JIANG ; Yin-Hong ZHANG ; Yun-Fen TIAN
Chinese Journal of Contemporary Pediatrics 2025;27(12):1514-1519
Objective To summarize the clinical and genetic characteristics of children with sodium taurocholate co-transporting polypeptide(NTCP)deficiency.Methods Clinical data of children with NTCP deficiency diagnosed and treated at the First People's Hospital of Yunnan Province from July 2022 to March 2025 were retrospectively analyzed.Results A total of 14 children were included(6 males,8 females),all with normal growth and development.Reasons for initial consultation included elevated serum bile acids in 7 cases,jaundice in 4 cases,cholestatic hepatitis in 1 case,and one case each of pneumonia and cow's milk protein allergy.At the first visit,all patients had elevated serum total bile acids beyond the normal range,with a mean of 152.5 μmol/L.Elevated alanine aminotransferase was observed in 1 case,elevated aspartate aminotransferase in 2 cases,and elevated total bilirubin in 10 cases.Genetic sequencing revealed that all children carried the homozygous SLC10A1 variant c.800C>T(p.Ser267Phe),classified as likely pathogenic.Conclusions NTCP deficiency often lacks obvious clinical symptoms and signs.Some children present with transient hyperbilirubinemia,cholestasis,or other liver function abnormalities.Persistent isolated elevation of serum bile acids warrants suspicion for this disease.Biallelic pathogenic variants in SLC10A1 constitute the basis for definitive diagnosis.There is no specific treatment for this disease,and management is mainly symptomatic.
7.Effects of apixaban on cardiac function,serum levels of sST2,FGF-23 and inflammatory factors in patients with atrial fibrillation and coronary artery disease
Chao-peng JIANG ; Ping CUI ; Gui-liang SHI ; Hong-qiang ZHANG ; Chen-xian GUO
Chinese Journal of cardiovascular Rehabilitation Medicine 2025;34(5):640-645
Objective:To investigate the effects of apixaban on cardiac function,serum levels of soluble suppression of tumorigenicity 2(sST2),fibroblast growth factor-23(FGF-23)and inflammatory factors in patients with atrial fibrillation(AF)and coronary artery disease(CAD).Methods:This randomized controlled study enrolled 120 pa-tients with AF and CAD who admitted Changzhou Wujin Hospital of Traditional Chinese Medicine between July 2022 and December 2023.Patients were randomly divided into control group(n=60,warfarin therapy)and inter-vention group(n=60,apixaban therapy).Each group received corresponding medication based on routine therapy for 8 weeks.Cardiac function indicators,levels of serum sST2,FGF-23,inflammatory factors,myocardial fibrosis indicators,and incidence of adverse reactions were compared between the two groups.Results:Compared to those in the control group,participants in the intervention group had significantly higher left ventricular ejection fraction(LVEF)[(52.22±3.69)%vs.(48.37±4.14)%]and 6-minute walking distance(6MWD)[(456.29±56.47)m vs.(415.25±11.32)m](P<0.001 all),and significantly lower left ventricular end-diastolic diameter(LVEDd)[(44.98±4.55)mm vs.(50.26±3.61)mm],levels of N-terminal pro B-type natriuretic peptide(NT-proB-NP)[(341.16±29.51)pg/ml vs.(392.33±32.27)pg/ml],cardiac troponin I(cTnI)[(3.76±1.12)ng/ml vs.(5.22±1.36)ng/ml],creatine kinase isoenzyme-MB(CK-MB)[(25.71±6.51)U/L vs.(39.13±6.33)U/L],high sensitive C-reactive protein(hsCRP)[(1.63±0.51)mg/L vs.(1.98±0.46)mg/L],tumor necrosis fac-tor-alpha(TNF-α)[(27.17±5.11)ng/Lvs.(34.19±5.32)ng/L],sST2[(52.11±5.87)μg/L vs.(62.37±5.82)μg/L]and FGF-23[(45.73±4.29)μg/L vs.(56.09±5.25)μg/L](P<0.001 all).We detected signifi-cant lower incidence of adverse reactions in intervention group compared to control group(6.9%vs.26.3%,P=0.005).Conclusion:Apixaban could alleviate myocardial fibrosis,improve cardiac function,and reduce levels of heart failure biomarkers and inflammatory factors in patients with coronary artery disease and atrial fibrillation.
8.Research progress on the mechanism of regulating bilirubin metabolism by traditional Chinese medicines attributed to the liver meridian
Mengting JIANG ; Zicheng XIAN ; Yinmin ZHOU ; Chao CHEN ; Xue LI ; Ming YANG
Chinese Journal of Pharmacoepidemiology 2025;34(9):1084-1093
Bilirubin,as a major endogenous substance in the human body,plays anti-inflammatory,antioxidant,and cytoprotective roles within physiological ranges,serving a critical function in maintaining metabolic balance of endogenous substances.Bilirubin metabolism is a complex physiological process regulated by multiple factors,relying on UGT1A1 enzyme catalysis and transporter protein modulation to sustain substance homeostasis.Based on the theory of traditional Chinese medicine(TCM)channel tropism and the principle of visceral syndrome differentiation,liver-channel-tropic herbs can guide medications to specific viscera and meridians,exerting targeted therapeutic effects.These herbs regulate bilirubin metabolic disorders through multi-target mechanisms,including upregulating UGT1A1 enzyme activity to promote bilirubin conjugation,modulating MRP2/OATP expression to enhance bilirubin transport,attenuating oxidative stress to reduce hepatocyte damage,inhibiting inflammatory cytokines to restore metabolic enzyme activity,activating CAR signaling pathways to regulate bile acid homeostasis.This review summarizes the mechanisms by which TCM regulates bilirubin metabolism,focuses on the role of liver meridian-targeting TCM to provide a basis for its rational clinical use,and studies the effects of liver meridian-targeting TCM on bilirubin metabolism from its core mechanisms to guide its rational use and provide new ideas for the research and development of traditional Chinese medicine.This review summarizes the mechanisms by which TCM regulates bilirubin metabolism,focusing on the actions of herbs that enter the liver meridian.Starting from the core mechanisms,it explores how liver meridian-entering herbs significantly impact bilirubin metabolism.Some of these herbs demonstrate dual-directional regulatory effects on bilirubin metabolism.This understanding guides their rational clinical use,provides novel ideas for TCM research and development,and promotes the modernization of TCM studies.
9.Butorphanol Combined with Esketamine for the Treatment of Remifentanil Induced Hyperalgesia after laparoscopic Gynecological Surgery:A Randomized Double-Blind Controlled Trial
Xian-cai LI ; Gui-wen ZHANG ; Yi JIANG
Progress in Modern Biomedicine 2025;25(10):1667-1675
Objective:To observe the effect of combine treatment of butorphanol combined with esketamine in patients with remifentanil induced hyperalgesia after laparoscopic gynecological surgery.Methods:Based on randomized double-blind controlled trial,120 patients undergoing laparoscopic gynecological surgery in our hospital from April 2023 to October 2024 were divided into control group 1(received esketamine treatment,n=40),control group 2(received butorphanol treatment,n=40),and study group(received butorphanol combined with esketamine treatment,n=40).The awakening time,extubation time,mean arterial pressure(MAP),heart rate(HR),visual pain analog scale(VAS)score,ramsay sedation score,and incidence of adverse reactions among three groups were compared.Results:The awakening time and extubation time in the study group were shorter than those in the control group 1 and control group 2(P<0.05).The MAP and HR in the study group were lower than those in the control group 1 and control group 2 at 30 minutes,60 minutes after extubation(P<0.05).The VAS scores in the study group were lower than those in the control group 1 and control group 2 at 30 minutes,60 minutes after extubation(P<0.05).The ramsay sedation scores in the study group were higher than those in the control group 1 and control group 2 at 30 minutes,60 minutes after extubation(P<0.05).There was no significant difference in the incidence of postoperative adverse reactions among the three groups(P>0.05).Conclusion:Butorphanol combined with esketamine can further alleviate remifentanil induced hyperalgesia after laparoscopic gynecological surgery,exert good sedative and analgesic effects,maintain hemodynamic stability,and have good safety.
10.Transcriptomic analysis of differentially expressed genes in newly excysted juvenile Clonorchis sinensis cultured in vitro
Fengxi XIAN ; Borong LI ; Xueling DENG ; Yuhong WU ; Shitao LI ; Yiqi JIANG ; Siying ZHOU ; Linrui LI ; Zhanshuai WU ; Zeli TANG
Chinese Journal of Zoonoses 2025;41(7):718-725
This study was aimed at investigating differentially expressed genes(DEGs)in Clonorchis sinensis(C.sinensis)meta-cercariae and newly excysted juveniles(NEJs)cultured in vitro for 1 hour or 3 hours,through transcriptomic analysis.Our objective was to explore the mechanisms underlying host invasion.Metacercariae were digested and isolated from Pseudorasbora parva infected with C.sinensis.The metacercariae excysted and developed into NEJs in vitro.Subsequently,the mRNA of metacercariae and NEJs cultured in vitro for 1 hour or 3 hours was extracted for transcriptomic sequencing analysis to screen for DEGs,and to conduct GO and KEGG analyses.A protein-protein interaction network(PPI)was constructed to identify hub genes.A total of 1 218 DEGs were de-tected.The main enriched GO terms of DEGs included transcription regulator activity and gated channel activity(primarily K+).The KEGG pathways significantly enriched in DEGs included cholesterol metabolism,lysosome,synthesis,secretion,and action of para-thyroid hormone.ZFAND4-2,BIRC6,and other genes were screened and identified as hub genes through PPI network analysis.Addi-tionally,abundant differential expression of cathepsin-related genes,including Cathepsin L and Cathepsin F,were observed before and after excystment in C.sinensis.Therefore,significant transcriptional level changes occurred in the metacercariae of C.sinensis be-fore and after excystation,and enrichment was observed primarily in signaling pathways,such as activation of growth and material me-tabolism,that regulate parasite growth and development.Meanwhile,biological events conducive to parasite invasion,migration,and adhesion were triggered.

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