OBJECTIVE: This study reports the first imported case of Lassa fever (LF) in China. Laboratory detection and molecular epidemiological analysis of the Lassa virus (LASV) from this case offer valuable insights for the prevention and control of LF. METHODS: Samples of cerebrospinal fluid (CSF), blood, urine, saliva, and environmental materials were collected from the patient and their close contacts for LASV nucleotide detection. Whole-genome sequencing was performed on positive samples to analyze the genetic characteristics of the virus. RESULTS: LASV was detected in the patient's CSF, blood, and urine, while all samples from close contacts and the environment tested negative. The virus belongs to the lineage IV strain and shares the highest homology with strains from Sierra Leone. The variability in the glycoprotein complex (GPC) among different strains ranged from 3.9% to 15.1%, higher than previously reported for the seven known lineages. Amino acid mutation analysis revealed multiple mutations within the GPC immunogenic epitopes, increasing strain diversity and potentially impacting immune response. CONCLUSION The case was confirmed through nucleotide detection, with no evidence of secondary transmission or viral spread. The LASV strain identified belongs to lineage IV, with broader GPC variability than previously reported. Mutations in the immune-related sites of GPC may affect immune responses, necessitating heightened vigilance regarding the virus.
Humans ; China/epidemiology* ; Genome, Viral ; Lassa Fever/virology* ; Lassa virus/classification* ; Molecular Epidemiology ; Phylogeny

Objective To analyze differences of purified water,softened water,and concentrated softened water on the decontamination effects for surgical instruments,so as to provide a reliable reference for the selection of cleaning water for surgical instruments.Methods The physical and chemical indexes and components of concentrated softened water,softened water,and purified water were detected,and their cleaning effects for instrument were compared.The decontamination cleaning experiment was conducted in three hospitals with different types of cleaning water using mini cleaning machines,and the differences in the decontamination time were analyzed.The cleaning and decontamination experiments on contaminated instruments was performed using a spray cleaning and disinfection device,and the cleaning effects of instruments with different types of cleaning water were analyzed.Results Calcium content and hardness of the three types of cleaning water were all at a low level,which can avoid scale adhesion for cleaning surgical instruments.There were statistically significant differences in the pH value,conductivity,and contents of calcium,sodium and chloride among the three cleaning waters(P<0.05).The purified water was weakly acidic,and its conductivity,hardness,and contents of calcium,sodium and chloride were all at low levels.The softened water and concentrated softened water were weakly alkaline,with high levels of conductivity and sodium content and low level of chloride.There were statistically significant differences in the decontamination time of the purified water,softened water and concentrated softened water among hospitals(P<0.05).Under the same contamination condition of surgical instruments,there was a statistically significant difference in the qualified rate of instruments cleaning in the upper and lower cleaning baskets with different cleaning waters(P<0.05).Conclusion Concentrated softened water and softened water have high sodium content,and their decontamination and cleaning abilities are significantly stronger than those of the purified water.Purified water has poorer effects in instruments cleaning for its deionized property.Using concentrated softened water or softened water in the surgical instrument cleaning process can achieve effects of reducing consumption and increasing efficiency,which is conducive to improving cleaning efficiency and quality.

Objective To compare the effects of quadratus lumborum block at the lateral supra-arcuate ligament(QLB-LSAL)and erector spinae plane block(ESPB)on early postoperative recovery in patients undergoing posterior lumbar surgery.Methods Ninety-three patients,aged 25～70 years,BMI 18～30 kg/m2 and ASA physical status Ⅱ or Ⅲ and scheduled for posterior lumbar surgery,were randomly divided into QLB-LSAL combined with general anesthesia(Group Q),ESPB combined with general anesthesia(Group E),and general anesthesia alone(Group N).Postoperatively,all groups received patient-controlled intravenous analgesia(PCIA).The following parameters were recorded:the scores of Richmond Agitation-Sedation Scale(RASS)and Bergman Comfort Scale(BCS)at awakening,6 h,12 h,and 24 h postoperatively;Likert scale score at PCIA cessation;the scores of Pittsburgh Sleep Quality Index(PSQI)and Early Postoperative Quality of Recovery-15(QoR-15)at 1 day preopera-(P<0.05).(2)Compared with Group N,group Q exhibited lower PSQI scores and higher QoR-15 scores at 1 and 3 days postoperatively(P<0.05).No statistically significant difference in PSQI scores was observed between group E and N(P>0.05),while group E had higher QoR-15 score than group N only at 1 day postoperatively(P<0.05).Both at 1 and 3 days postoperatively,group Q had lower PSQI scores and higher QoR-15 scores than group E(P<0.05).(3)Postoperative awakening time,extubation time,PACU stay time,time to first anal exhaust and time to first ambulation were significantly shorter in group Q than those in group N(P<0.05).Group E only showed shorter time to first anal exhaust compared to group N(P<0.05).Furthermore,group Q had a significantly shorter PACU stay time than group E(P<0.01).(4)There was no statistically significant difference in the incidence of adverse reactions among the three groups of patients.(P>0.05).Conclusions Both QLB-LSAL and ESPB effectively improve postoperative analgesia and early recovery quality.However,QLB-LSAL demonstrates advantages in enhancing patient comfort,analgesia satisfaction,sleep quality,and accelerating overall postoperative recovery.

INTRODUCTION: Lecanemab has shown promise in treating early Alzheimer's disease (AD), but its safety and efficacy in Chinese populations remain unexplored. This study aimed to evaluate the safety and 6-month clinical outcomes of lecanemab in Chinese patients with mild cognitive impairment (MCI) or mild AD. METHODS: In this single-arm, real-world study, participants with MCI due to AD or mild AD received biweekly intravenous lecanemab (10 mg/kg). The study was conducted at Hainan Branch, Ruijin Hospital Shanghai Jiao Tong University School of Medicine. Patient enrollment and baseline assessments commenced in November 2023. Safety assessments included monitoring for amyloid-related imaging abnormalities (ARIA) and other adverse events. Clinical and biomarker changes from baseline to 6 months were evaluated using cognitive scales (mini-mental state examination [MMSE], montreal cognitive assessment [MoCA], clinical dementia rating-sum of boxes [CDR-SB]), plasma biomarker analysis, and advanced neuroimaging. RESULTS: A total of 64 patients were enrolled in this ongoing real-world study. Safety analysis revealed predominantly mild adverse events, with infusion-related reactions (20.3%, 13/64) being the most common. Of these, 69.2% (9/13) occurred during the initial infusion and 84.6% (11/13) did not recur. ARIA-H (microhemorrhages/superficial siderosis) and ARIA-E (edema/effusion) were observed in 9.4% (6/64) and 3.1% (2/64) of participants, respectively, with only two symptomatic cases (one ARIA-E presenting with headache and one ARIA-H with visual disturbances). After 6 months of treatment, cognitive scores remained stable compared to baseline (MMSE: 22.33 ± 5.58 vs . 21.27 ± 4.30, P = 0.733; MoCA: 16.38 ± 6.67 vs . 15.90 ± 4.78, P = 0.785; CDR-SB: 2.30 ± 1.65 vs . 3.16 ± 1.72, P = 0.357), while significantly increasing plasma amyloid-β 42 (Aβ42) (+21.42%) and Aβ40 (+23.53%) levels compared to baseline. CONCLUSIONS: Lecanemab demonstrated a favorable safety profile in Chinese patients with early AD. Cognitive stability and biomarker changes over 6 months suggest potential efficacy, though high dropout rates and absence of a control group warrant cautious interpretation. These findings provide preliminary real-world evidence for lecanemab's use in China, supporting further investigation in larger controlled studies. REGISTRATION ClinicalTrials.gov , NCT07034222.
Humans ; Alzheimer Disease/drug therapy* ; Male ; Female ; Aged ; Middle Aged ; Cognitive Dysfunction/drug therapy* ; Aged, 80 and over ; Amyloid beta-Peptides/metabolism* ; Biomarkers ; East Asian People

Yinyang Gongji Pills have the effects of strengthening the body resistance to eliminate pathogenic factors, removing stasis, and reducing swelling, which is a commonly used traditional Chinese medicine(TCM) formula for treating intestinal accumulation. A real-world, registered, and single-arm clinical trial was conducted to observe the clinical efficacy and safety of Yinyang Gongji Pills combined with capecitabine in the treatment of advanced colorectal cancer and analyze the clinical characteristics of the patients. A total of 60 patients with advanced colorectal cancer who refused or could not tolerate standard treatment of western medicine were included in the study. They were treated with Yinyang Gongji Pills combined with capecitabine until disease progression or intolerable adverse events occurred. The main observation indicators were progression-free survival(PFS) and safety. The treatment effects of the patients under different baseline characteristics were analyzed. The clinical trial has found that the median PFS of all enrolled patients was 7.3 months, with 30.1% of patients having a PFS exceeding 12.0 months. Layered analysis showed that the median PFS of patients with the onset site being the colon and rectum were respectively 8.4 and 4.7 months. The median PFS of patients with high, medium, and low tumor burden were respectively 7.0, 4.7, and 10.8 months. The median PFS of patients with wild-type and mutant-type RAS/BRAF were respectively 7.9 and 6.9 months. The median PFS of patients with KPS scores ≥80 and ≤70 were respectively 7.9 and 6.5 months. The median PFS of patients treated with Yinyang Gongji Pills for ≥6, 3-6, and ≤3 months were respectively 8.0, 5.2, and 4.2 months. The median PFS of patients with spleen, kidney, liver, and lung syndrome differentiation in TCM were respectively 8.3, 6.7, 7.3, and 5.6 months. The median PFS of patients with TCM pathological factors including phlegm, dampness, and blood stasis were respectively 7.0, 7.3, and 6.5 months. Common adverse reactions include anemia, decreased white blood cells, decreased appetite, fatigue, and hand foot syndrome, with incidence rates being respectively 44.2%, 34.6%, 42.3%, 32.7%, and 17.3%. The results showed that the combination of Yinyang Gongji Pills and capecitabine demonstrated potential clinical efficacy and good safety in this study. The patients have clinical characteristics such as low tumor burden, onset site at the colon, KPS scores ≥ 80, long duration of oral TCM, and TCM syndrome differentiation including spleen or liver.
Humans ; Capecitabine/adverse effects* ; Colorectal Neoplasms/mortality* ; Drugs, Chinese Herbal/adverse effects* ; Male ; Middle Aged ; Female ; Aged ; Adult ; Treatment Outcome

This study aims to explore the effects and action mechanisms of the active ingredients in Buyang Huanwu Decoction(BYHWD), namely tetramethylpyrazine(TMP) and hydroxy-safflor yellow A(HSYA), on oxygen-glucose deprivation/reglucose-reoxygenation(OGD/R)-induced inflammation and oxidative stress of microglia(MG). Network pharmacology was used to screen the effective monomer ingredients of BYHWD and determine the safe concentration range for each component. Inflammation and oxidative stress models were established to further screen the best ingredient combination and optimal concentration ratio with the most effective anti-inflammatory and antioxidant effects. OGD/R BV2 cell models were constructed, and BV2 cells in the logarithmic growth phase were divided into a normal group, a model group, an HSYA group, a TMP group, and an HSYA + TMP group. Enzyme-linked immunosorbent assay(ELISA) was used to detect the levels of inflammatory cytokines such as interleukin-1β(IL-1β), tumor necrosis factor-α(TNF-α), and interleukin-6(IL-6). Oxidative stress markers, including superoxide dismutase(SOD), nitric oxide(NO), and malondialdehyde(MDA), were also measured. Western blot was used to analyze the protein expression of both inflammation-related pathway [Toll-like receptor 4(TLR4)/nuclear factor-kappa B(NF-κB)] and oxidative stress-related pathway [nuclear factor erythroid 2-related factor 2(Nrf2)/heme oxygenase-1(HO-1)]. Immunofluorescence was used to assess the expression of proteins such as inducible nitric oxide synthase(iNOS) and arginase-1(Arg-1). The most effective ingredients for anti-inflammatory and antioxidant effects in BYHWD were TMP and HSYA. Compared to the normal group, the model group showed significantly increased levels of IL-1β, TNF-α, IL-6, NO, and MDA, along with significantly higher protein expression of NF-κB, TLR4, Nrf2, and HO-1 and significantly lower SOD levels. The differences between the two groups were statistically significant. Compared to the model group, both the HSYA group and the TMP group showed significantly reduced levels of IL-1β, TNF-α, IL-6, NO, and MDA, lower expression of NF-κB and TLR4 proteins, higher levels of SOD, and significantly increased protein expression of Nrf2 and HO-1. Additionally, the expression of the M1-type MG marker iNOS was significantly reduced, while the expression of the M2-type MG marker Arg-1 was significantly increased. The results of the HSYA group and the TMP group had statistically significant differences from those of the model group. Compared to the HSYA group and the TMP group, the HSYA + TMP group showed further significant reductions in IL-1β, TNF-α, IL-6, NO, and MDA levels, along with significant reductions in NF-κB and TLR4 protein expression, an increase in SOD levels, and elevated Nrf2 and HO-1 protein expression. Additionally, the expression of the M1-type MG marker iNOS was reduced, while the M2-type MG marker Arg-1 expression increased significantly in the HSYA + TMP group compared to the TMP or HSYA group. The differences in the results were statistically significant between the HSYA + TMP group and the TMP or HSYA group. The findings indicated that the combined use of HSYA and TMP, the active ingredients of BYHWD, can effectively inhibit OGD/R-induced inflammation and oxidative stress of MG, showing superior effects compared to the individual use of either component.
Oxidative Stress/drug effects* ; Drugs, Chinese Herbal/pharmacology* ; Animals ; Mice ; Glucose/metabolism* ; Cell Line ; Inflammation/genetics* ; Oxygen/metabolism* ; Pyrazines/pharmacology* ; Microglia/metabolism* ; NF-E2-Related Factor 2/immunology* ; NF-kappa B/immunology* ; Toll-Like Receptor 4/immunology* ; Anti-Inflammatory Agents/pharmacology* ; Humans

ObjectiveBased on multi-index and multi-method detection， the quality of Rukuaixiao preparations was systematically evaluated from the perspective of characteristic components， and the existing problems were analyzed. MethodsLiquid chromatography-mass spectrometry（LC-MS） for the determination of 16 characteristic components was established to evaluate the quality of 129 batches of Rukuaixiao preparations. High performance liquid chromatography（HPLC） was established to determine the contents of salvianolic acids and tanshinones， investigate the rationality of quality control index of Salviae Miltiorrhizae Radix et Rhizoma in the standard for Rukuaixiao preparations in the 2020 edition of Pharmacopoeia of the People's Republic of China（hereinafter referred to as Chinese Pharmacopoeia） （volume Ⅰ）， and trace the causes of significant difference among different batches. The processing and different extraction methods of Vaccariae Semen were tested， analyzing the impact of formulation changes across different editions of Chinese Pharmacopoeia. The LC-MS was established for determining the changes in the ratio of toosendanin and isotoosendanin after water extraction of Toosendan Fructus. The contents of active components in different parts of Gleditsiae Spina were determined to identify the reason of the low contents of characteristic components in some enterprises. ResultsBased on the comprehensive analysis of the samples from different dosage forms， the contents of characteristic components of Vaccariae Semen and Gleditsiae Spina in tablets from manufacturer B and granules from manufacturer D were significantly higher than those in tablets from manufacturer A， and tablets and capsules from manufacturer C. The contents of tanshinones in some batches of products from manufacturer A were abnormally high， potentially linked to the use of 70% ethanol reflux during extraction of Salviae Miltiorrhizae Radix et Rhizoma. All samples from manufacturer C exhibited abnormally high proportions of salvianic acid A and 3，4-dihydroxybenzaldehyde（salvianolic acid degradation products） to the total seven phenolic acids， indicating a risk of blindly pursuing tanshinol content and neglecting more effective components. The extraction rate of the characteristic components from Vaccariae Semen by decocting with water was obviously higher than that by reflux extraction with 70% ethanol. However， using the stir-fried Vaccariae Semen could reduce the loss of ingredients. The content ratio of toosendanin and isotoosendanin decreased from the crude herb to the prepared medicine when Toosendan Fructus was prepared by water decoction. The reason for the low component content of Gleditsiae Spina may be attributed to manufacturers using excessive non-medicinal parts in their formulations. ConclusionIt is suggested that enterprises should ensure the quality of raw material inputs， especially those without quality-control items in the standard， reduce the use of non-medicinal parts， and prohibit arbitrary alterations to manufacturing methods or processes. It is also recommended that Vaccariae Semen in Rukuaixiao capsules and granules should be changed to the stir-fried processed products. Isotoosendanin should be taken into consideration in the drug supervision when Toosendan Fructus is prepared into medicine by water decoction. Salvianolic acid B should be set as a quality control index for Salviae Miltiorrhizae Radix et Rhizoma when revising the pharmacopoeia standard of Rukuaixiao preparations.

ObjectiveBased on multi-index and multi-method detection， the quality of Rukuaixiao preparations was systematically evaluated from the perspective of characteristic components， and the existing problems were analyzed. MethodsLiquid chromatography-mass spectrometry（LC-MS） for the determination of 16 characteristic components was established to evaluate the quality of 129 batches of Rukuaixiao preparations. High performance liquid chromatography（HPLC） was established to determine the contents of salvianolic acids and tanshinones， investigate the rationality of quality control index of Salviae Miltiorrhizae Radix et Rhizoma in the standard for Rukuaixiao preparations in the 2020 edition of Pharmacopoeia of the People's Republic of China（hereinafter referred to as Chinese Pharmacopoeia） （volume Ⅰ）， and trace the causes of significant difference among different batches. The processing and different extraction methods of Vaccariae Semen were tested， analyzing the impact of formulation changes across different editions of Chinese Pharmacopoeia. The LC-MS was established for determining the changes in the ratio of toosendanin and isotoosendanin after water extraction of Toosendan Fructus. The contents of active components in different parts of Gleditsiae Spina were determined to identify the reason of the low contents of characteristic components in some enterprises. ResultsBased on the comprehensive analysis of the samples from different dosage forms， the contents of characteristic components of Vaccariae Semen and Gleditsiae Spina in tablets from manufacturer B and granules from manufacturer D were significantly higher than those in tablets from manufacturer A， and tablets and capsules from manufacturer C. The contents of tanshinones in some batches of products from manufacturer A were abnormally high， potentially linked to the use of 70% ethanol reflux during extraction of Salviae Miltiorrhizae Radix et Rhizoma. All samples from manufacturer C exhibited abnormally high proportions of salvianic acid A and 3，4-dihydroxybenzaldehyde（salvianolic acid degradation products） to the total seven phenolic acids， indicating a risk of blindly pursuing tanshinol content and neglecting more effective components. The extraction rate of the characteristic components from Vaccariae Semen by decocting with water was obviously higher than that by reflux extraction with 70% ethanol. However， using the stir-fried Vaccariae Semen could reduce the loss of ingredients. The content ratio of toosendanin and isotoosendanin decreased from the crude herb to the prepared medicine when Toosendan Fructus was prepared by water decoction. The reason for the low component content of Gleditsiae Spina may be attributed to manufacturers using excessive non-medicinal parts in their formulations. ConclusionIt is suggested that enterprises should ensure the quality of raw material inputs， especially those without quality-control items in the standard， reduce the use of non-medicinal parts， and prohibit arbitrary alterations to manufacturing methods or processes. It is also recommended that Vaccariae Semen in Rukuaixiao capsules and granules should be changed to the stir-fried processed products. Isotoosendanin should be taken into consideration in the drug supervision when Toosendan Fructus is prepared into medicine by water decoction. Salvianolic acid B should be set as a quality control index for Salviae Miltiorrhizae Radix et Rhizoma when revising the pharmacopoeia standard of Rukuaixiao preparations.

Objective To analyze differences of purified water,softened water,and concentrated softened water on the decontamination effects for surgical instruments,so as to provide a reliable reference for the selection of cleaning water for surgical instruments.Methods The physical and chemical indexes and components of concentrated softened water,softened water,and purified water were detected,and their cleaning effects for instrument were compared.The decontamination cleaning experiment was conducted in three hospitals with different types of cleaning water using mini cleaning machines,and the differences in the decontamination time were analyzed.The cleaning and decontamination experiments on contaminated instruments was performed using a spray cleaning and disinfection device,and the cleaning effects of instruments with different types of cleaning water were analyzed.Results Calcium content and hardness of the three types of cleaning water were all at a low level,which can avoid scale adhesion for cleaning surgical instruments.There were statistically significant differences in the pH value,conductivity,and contents of calcium,sodium and chloride among the three cleaning waters(P<0.05).The purified water was weakly acidic,and its conductivity,hardness,and contents of calcium,sodium and chloride were all at low levels.The softened water and concentrated softened water were weakly alkaline,with high levels of conductivity and sodium content and low level of chloride.There were statistically significant differences in the decontamination time of the purified water,softened water and concentrated softened water among hospitals(P<0.05).Under the same contamination condition of surgical instruments,there was a statistically significant difference in the qualified rate of instruments cleaning in the upper and lower cleaning baskets with different cleaning waters(P<0.05).Conclusion Concentrated softened water and softened water have high sodium content,and their decontamination and cleaning abilities are significantly stronger than those of the purified water.Purified water has poorer effects in instruments cleaning for its deionized property.Using concentrated softened water or softened water in the surgical instrument cleaning process can achieve effects of reducing consumption and increasing efficiency,which is conducive to improving cleaning efficiency and quality.

Aim To establish an animal model of diabetic kidney disease(DKD)integrating blood stasis syndrome and syndrome evaluation indicators.Methods Twenty-five SD rats were ran-domly divided according to body weight into a control group(8 rats)and a modeling group(17 rats).The modeling group was fed a high-sugar and high-fat diet for four weeks and induced to form diabetic rats by intraperitoneal injection of 30 mg·kg-1 streptozocin.The modeling rats were randomly divided into the DKD group and blood stasis syndrome combination group accord-ing to 24-hour urinary protein(24-hUP).The blood stasis syn-drome combination group was induced to replicate the DKD blood stasis syndrome model by injecting 10％high molecular weight D-glucoside three times at a dose of 0.05 mg·kg-1 via tail vein.The model was evaluated based on random blood glu-cose level,24-hUP level,syndrome assessment,pathological staining etc,and differential metabolites were selected using metabolomics.Results The comprehensive evaluation of syn-drome manifestations and pathological staining in the combined model of blood stasis syndrome in rats demonstrated successful replication.Utilizing the technique of liquid chromatography-mass spectrometry,22 differential metabolites were identified,with associated pathways showing a certain relevance to blood stasis syndrome in DKD.Conclusions The successful replica-tion of an animal model combining the syndrome of blood stasis in DKD has been achieved in this study.Evaluation of indicators and results from metabolomics studies consistently demonstrate a correlation with the syndrome of blood stasis in DKD.