OBJECTIVE: To investigate whether electroacupuncture (EA) at sensitized acupoints could reduce sympathetic-sensory coupling (SSC) and neurogenic inflammatory response by interfering with 5-hydroxytryptamine (5-HT)ergic neural pathways to relieve colitis and somatic referred pain, and explore the underlying mechanisms. METHODS: Rats were treated with 5% dextran sodium sulfate (DSS) solution for 7 days to establish a colitis model. Twelve rats were randomly divided into the control and model groups according to a random number table (n=6). According to the "Research on Rat Acupoint Atlas", sensitized acupoints and non-sensitized acupoints were determined. Rats were randomly divided into the control, model, Zusanli-EA (ST 36), Dachangshu-EA (BL 25), and Xinshu (BL 15) groups (n=6), as well as the control, model, EA, and EA + GR113808 (a 5-HT inhibitor) groups (n=6). The rats in the control group received no treatment. Acupuncture was administered on 2 days after modeling using the stimulation pavameters: 1 mA, 2 Hz, for 30 min, with sparse and dense waves, for 14 consecutive days. GR113808 was injected into the tail vein at 5 mg/kg before EA for 10 min for 7 consecutive days. Mechanical sensitivity was assessed with von Frey filaments. Body weight and disease activity index (DAI) scores of rats were determined. Hematoxylin and eosin staining was performed to observe colon histopathology. SSC was analyzed by immunofluorescence staining. Immunohistochemical staining was performed to detect 5-HT and substance P (SP) expressions. The calcitonin gene-related peptide (CGRP) in skin tissue and tyrosine hydroxylase (TH) protein levels in DRG were detected by Western blot. The levels of hyaluronic acid (HA), bradykinin (BK), prostaglandin I2 (PGI2) in skin tissue, 5-HT, tryptophan hydroxylase 1 (TPH1), serotonin transporters (SERT), 5-HT 3 receptor (5-HT3R), and 5-HT 4 receptor (5-HT4R) in colon tissue were measured by enzyme-linked immunosorbent assay (ELISA). RESULTS: BL 25 and ST 36 acupoints were determined as sensitized acupoints, and BL 15 acupoint was used as a non-sensitized acupoint. EA at sensitized acupoints improved the DAI score, increased mechanical withdrawal thresholds, and alleviated colonic pathological damage of rats. EA at sensitized acupoints reduced SSC structures and decreased TH and CGRP expression levels (P<0.05). Furthermore, EA at sensitized acupoints reduced BK, PGI2, 5-HT, 5-HT3R and TPH1 levels, and increased HA, 5-HT4R and SERT levels in colitis rats (P<0.05). GR113808 treatment diminished the protective effect of EA at sensitized acupoints in colitis rats (P<0.05). CONCLUSION EA at sensitized acupoints alleviated DSS-induced somatic referred pain in colitis rats by interfering with 5-HTergic neural pathway, and reducing SSC inflammatory response.
Rats ; Animals ; Electroacupuncture ; Rats, Sprague-Dawley ; Serotonin ; Acupuncture Points ; Pain, Referred ; Calcitonin Gene-Related Peptide ; Signal Transduction ; Colitis/therapy* ; Indoles ; Sulfonamides

Plasma metabolomics combined experimental verification was employed for investigating of the hypoglycemic effect of Panax notoginseng saponins (PNS) on type 2 diabetes mellitus (T2DM) mice. Forty C57BL/6J mice were randomly divided into control and experimental groups after one week of adaptive feeding. The mice in control group were fed conventionally, and the T2DM model was established in mice of the experimental group by intraperitoneal injection of streptozotocin following twelve weeks of feeding on a high-fat diet (HFD). All experiments were approved by the Ethical Committee Experimental Animal Center of North Sichuan Medical College (NSMC2022023). After the failure cases during modeling were eliminated, the remaining mice were randomly divided into model group (T2DM), low dose [200 mg·kg^-1·d^-1] and high dose [300 mg·kg^-1·d^-1] PNS groups. Mice in normal and model groups were given equal amounts of normal saline by gavage. The mice were administered intragastrically with PNS for 6 weeks, and their body weight, food intake, water intake and fasting blood glucose (FBG) were measured weekly. Oral glucose tolerance test (OGTT) was performed at the 5th week of administration. The changes of liver functions and blood lipids were detected by collecting blood from eyeballs. Tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) levels were detected in the blood and the activity of glutathione peroxidase (GSH-Px), catalase (CAT) and superoxide dismutase (SOD) were analyzed in the liver by kit, respectively. Subsequently, the changes in plasma endogenous metabolites from each group were determined based on metabolomics, and the pathway enrichment analysis of differential metabolites was performed using KEGG database. NF-κB signaling pathway, TNF-α and IL-6 in liver were detected by western blot, respectively. The results showed that T2DM mice were successfully constructed. High dose of panax notoginseng saponins (HPNS) can reduce the FBG in T2DM mice while low dose of PNS (LPNS) has no significant effect on FBG. HPNS improves the liver function, reduces the levels of blood lipids, TNF-α and IL-6, and increases the activity of GSH-Px, CAT and SOD in liver of T2DM mice. Metabolomics results showed that 45 metabolites were significantly changed in the plasma of model group compared with control, and 20 metabolites were significantly changed after HPNS treatment. Pathway enrichment indicated that arachidonic acid metabolism, linoleic acid metabolism, glutathione metabolism and carnitine synthesis were changed in the blood of T2DM mice, and HPNS improved the abnormal metabolism of arachidonic acid and linoleic acid in T2DM mice. Western blot showed that HPNS could inhibit the NF-κB pathway and reduce the expression of TNF-α and IL-6 in the liver of T2DM mice, suggesting that PNS may exert the antidiabetic effect by inhibiting NF-κB pathway, regulating arachidonic acid and linoleic acid metabolism to reduce inflammatory factors and oxidative stress, improve liver function in T2DM mice.

Liver is the main organ of glucose and lipid metabolism, and persistent hyperglycemia is a common cause of liver injury. Panax notoginsenosides (PNS) is the main active ingredient in Panax notoginseng, which have anti-inflammatory and antioxidant effects. In this study, quantitative proteomics combined with experimental verification was used to explore the protective effect of PNS on liver injury in type 2 diabetes mellitus (T2DM) mice and its potential mechanism. All experiments were approved by the Ethical Committee Experimental Animal Center of North Sichuan Medical College (NSMC2022023). Hematoxylin-eosin (H&E) staining and transmission electron microscopy were used to observe the effect of PNS on the histopathological changes of liver in T2DM mice. TdT-mediated dUTP Nick-end labeling (TUNEL) staining was used to analyze the effect of PNS on hepatocyte apoptosis in T2DM mice. Reactive oxygen species (ROS) and malonaldehyde (MDA) kits were used to detect the effect of PNS on oxidative damage of liver in T2DM mice. Subsequently, proteomics profiling of mice in T2DM and T2DM+PNS groups were investigated based on quantitative proteomics. Differentially expressed proteins were screened out according to fold change and significance level in T2DM and T2DM+PNS groups, respectively. Pathway enrichment analysis of these differential proteins was done using GeneAnalytics database. Gene ontology analysis was conducted by Metascape database. Protein-protein interaction networks were constructed based on STRING database. Western blot was used to detect protein expression. These results showed that PNS could improve liver abnormalities, inhibit hepatocyte apoptosis, and improve the morphology of mitochondria and endoplasmic reticulum in T2DM mice. Proteome data demonstrated that 489 genes expression changed significantly in liver of T2DM mice compared with normal, and 42 ones were significantly reversed after PNS treatment and returned to normal levels. Pathway analysis showed that sterol hormone biosynthesis, adenosine 5′-monophosphate-activated protein kinase (AMPK) signaling pathway, oxidative stress, insulin signaling, phosphatidylinositol pathway, tumor necrosis factor-α (TNF-α) mediated inflammation, insulin resistance, and mTOR signaling pathway exhibited notable changes based on pathway enrichment ratio and significance level. It is worth noting that PNS could improve the abnormal changes of AMPK, TNF-α, apoptosis and insulin pathways. Western blot manifested that PNS inhibit the expression of Bax, Grp78 and Chop, reduce ratio of cleaved casp6/casp6, increase the levels of pAMPKα, HO-1 and Nu-Nrf2 in the liver of T2DM mice. These results suggested that PNS may play protective roles in the liver of T2DM mice by inhibiting apoptosis via activating AMPK/Nrf2/HO-1 signaling pathway, alleviating oxidative stress and endoplasmic reticulum stress.

Objective To measure the distance between the lateral compression Ⅱ(LC-Ⅱ)screw guide needle and the surrounding important structures around the anterior inferior iliac spine in pelvic fractures and to locate the needle point,so as to provide anatomical reference for clinical nail placement.Methods Totally 40 adult gross specimens of embalming were implanted with LC-Ⅱ screw guide needle under the surveillance of C-arm machine,and the specimens were dissected.The shortest distance between the insertion point and the lateral femoral cutaneous nerve,femoral nerve,femoral artery,femoral vein,anterior superior iliac spine and inguinal ligament was measured.The triangle was constructed between the insertion point,anterior superior iliac spine and inguinal ligament,and the exact location of the entry point was calculated.Results The average distance between the insertion point of the male needle and the femoral vein was(50.67±7.29)mm＞the anterior superior iliac spine(43.83±7.58)mm＞the femoral artery(38.35±6.63)mm＞the femoral nerve(31.17±1.67)mm=the inguinal ligament(28.69±6.59)mm＞the lateral femoral cutaneous nerve(7.98±3.81)mm.The mean distance between the insertion point of the female needle and the anterior superior iliac spine was(45.28±7.07)mm=femoral vein(43.72±6.89)mm＞femoral artery(33.76±6.33)mm＞femoral nerve(25.66±6.46)mm=inguinal ligament(23.22±5.00)mm＞lateral femoral cutaneous nerve(8.97±4.76)mm.The projection distance of the entry point was 31.77 mm for men and 38.41 mm for women.The Angle b was 42.81°for men and 31.71° for women.Conclusion The lateral femoral cutaneous nerve is most vulnerable to injury when LC-Ⅱ screw is inserted,and the risk of injury has nothing to do with sex.The insertion point positioning method a and b made LC-Ⅱ screw placement quickly,safely and accurately,and reduced fluoroscopy time and frequency.

Traumatic supraorbital fissure syndrome (TSOFS) is a symptom complex caused by nerve entrapment in the supraorbital fissure after skull base trauma. If the compressed cranial nerve in the supraorbital fissure is not decompressed surgically, ptosis, diplopia and eye movement disorder may exist for a long time and seriously affect the patients′ quality of life. Since its overall incidence is not high, it is not familiarized with the majority of neurosurgeons and some TSOFS may be complicated with skull base vascular injury. If the supraorbital fissure surgery is performed without treatment of vascular injury, it may cause massive hemorrhage, and disability and even life-threatening in severe cases. At present, there is no consensus or guideline on the diagnosis and treatment of TSOFS that can be referred to both domestically and internationally. To improve the understanding of TSOFS among clinical physicians and establish standardized diagnosis and treatment plans, the Skull Base Trauma Group of the Neurorepair Professional Committee of the Chinese Medical Doctor Association, Neurotrauma Group of the Neurosurgery Branch of the Chinese Medical Association, Neurotrauma Group of the Traumatology Branch of the Chinese Medical Association, and Editorial Committee of Chinese Journal of Trauma organized relevant experts to formulate Chinese expert consensus on the diagnosis and treatment of traumatic supraorbital fissure syndrome ( version 2024) based on evidence of evidence-based medicine and clinical experience of diagnosis and treatment. This consensus puts forward 12 recommendations on the diagnosis, classification, treatment, efficacy evaluation and follow-up of TSOFS, aiming to provide references for neurosurgeons from hospitals of all levels to standardize the diagnosis and treatment of TSOFS.

Patients with severe trauma require an extremely timely treatment and transfusion plays an irreplaceable role in the emergency treatment of such patients. An increasing number of evidence-based medicinal evidences and clinical practices suggest that patients with severe traumatic bleeding benefit from early transfusion of low-titer group O whole blood or hemostatic resuscitation with red blood cells, plasma and platelet of a balanced ratio. However, the current domestic mode of blood supply cannot fully meet the requirements of timely and effective blood transfusion for emergency treatment of patients with severe trauma in clinical practice. In order to solve the key problems in blood supply and blood transfusion strategies for emergency treatment of severe trauma, Branch of Clinical Transfusion Medicine of Chinese Medical Association, Group for Trauma Emergency Care and Multiple Injuries of Trauma Branch of Chinese Medical Association, Young Scholar Group of Disaster Medicine Branch of Chinese Medical Association organized domestic experts of blood transfusion medicine and trauma treatment to jointly formulate Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients ( version 2024). Based on the evidence-based medical evidence and Delphi method of expert consultation and voting, 10 recommendations were put forward from two aspects of blood support mode and transfusion strategies, aiming to provide a reference for transfusion resuscitation in the emergency treatment of severe trauma and further improve the success rate of treatment of patients with severe trauma.

Objective To monitor the susceptibility of clinical isolates to antimicrobial agents in tertiary hospitals in major regions of China in 2022.Methods Clinical isolates from 58 hospitals in China were tested for antimicrobial susceptibility using a unified protocol based on disc diffusion method or automated testing systems.Results were interpreted using the 2022 Clinical &Laboratory Standards Institute(CLSI)breakpoints.Results A total of 318 013 clinical isolates were collected from January 1,2022 to December 31,2022,of which 29.5％were gram-positive and 70.5％were gram-negative.The prevalence of methicillin-resistant strains in Staphylococcus aureus,Staphylococcus epidermidis and other coagulase-negative Staphylococcus species(excluding Staphylococcus pseudintermedius and Staphylococcus schleiferi)was 28.3％,76.7％and 77.9％,respectively.Overall,94.0％of MRSA strains were susceptible to trimethoprim-sulfamethoxazole and 90.8％of MRSE strains were susceptible to rifampicin.No vancomycin-resistant strains were found.Enterococcus faecalis showed significantly lower resistance rates to most antimicrobial agents tested than Enterococcus faecium.A few vancomycin-resistant strains were identified in both E.faecalis and E.faecium.The prevalence of penicillin-susceptible Streptococcus pneumoniae was 94.2％in the isolates from children and 95.7％in the isolates from adults.The resistance rate to carbapenems was lower than 13.1％in most Enterobacterales species except for Klebsiella,21.7％-23.1％of which were resistant to carbapenems.Most Enterobacterales isolates were highly susceptible to tigecycline,colistin and polymyxin B,with resistance rates ranging from 0.1％to 13.3％.The prevalence of meropenem-resistant strains decreased from 23.5％in 2019 to 18.0％in 2022 in Pseudomonas aeruginosa,and decreased from 79.0％in 2019 to 72.5％in 2022 in Acinetobacter baumannii.Conclusions The resistance of clinical isolates to the commonly used antimicrobial agents is still increasing in tertiary hospitals.However,the prevalence of important carbapenem-resistant organisms such as carbapenem-resistant K.pneumoniae,P.aeruginosa,and A.baumannii showed a downward trend in recent years.This finding suggests that the strategy of combining antimicrobial resistance surveillance with multidisciplinary concerted action works well in curbing the spread of resistant bacteria.

Molecular imprinting is a biomimetic technique that simulates the specific recognition of biological macromolecules such as antibody. Based on molecular imprinting and high-specificity affinity analysis,the biomimetic imprinting affinity analysis (BIA) possesses many advantages such as high sensitivity,strong tolerance,good specificity and low cost,and thus,it has shown excellent prospects in food safety detection,pharmaceutical analysis and environmental pollution monitoring. In this review,the construction methods of recognition interfaces for BIA were summarized,including bulk polymerization,electro-polymerization and surface molecular imprinting. The application of molecularly imprinted polymers in different analysis methods,such as radiolabeled affinity analysis,enzyme-labeled affinity analysis,fluorescence-labeled affinity analysis,chemiluminescence affinity analysis and electrochemical immunosensor was mainly discussed. Furthermore,the challenges and future development trends of BIA in practical application were elucidated. This review might provide new reference ideas and technical supports for the further development of BIA technique.

Objective The aim of this study is to explore the potential modulatory role of quercetin against Endotoxin or lipopolysaccharide (LPS) induced septic cardiac dysfunction.Methods Specific pathogen-free chicken embryos (n = 120) were allocated untreated control, phosphate buffer solution (PBS) vehicle, PBS with ethanol vehicle, LPS (500 ng/egg), LPS with quercetin treatment (10, 20, or 40 nmol/egg, respectively), Quercetin groups (10, 20, or 40 nmol/egg). Fifteen-day-old embryonated eggs were inoculated with abovementioned solutions via the allantoic cavity. At embryonic day 19, the hearts of the embryos were collected for histopathological examination, RNA extraction, real-time polymerase chain reaction, immunohistochemical investigations, and Western blotting.Results They demonstrated that the heart presented inflammatory responses after LPS induction. The LPS-induced higher mRNA expressions of inflammation-related factors (TLR4, TNFα, MYD88, NF-κB1, IFNγ, IL-1β, IL-8, IL-6, IL-10, p38, MMP3, and MMP9) were blocked by quercetin with three dosages. Quercetin significantly decreased immunopositivity to TLR4 and MMP9 in the treatment group when compared with the LPS group. Quercetin significantly decreased protein expressions of TLR4, IFNγ, MMP3, and MMP9 when compared with the LPS group. Quercetin treatment prevented LPS-induced increase in the mRNA expression of Claudin 1 and ZO-1, and significantly decreased protein expression of claudin 1 when compared with the LPS group. Quercetin significantly downregulated autophagy-related gene expressions (PPARα, SGLT1, APOA4, AMPKα1, AMPKα2, ATG5, ATG7, Beclin-1, and LC3B) and programmed cell death (Fas, Bcl-2, CASP1, CASP12, CASP3, and RIPK1) after LPS induction. Quercetin significantly decreased immunopositivity to APOA4, AMPKα2, and LC3-II/LC3-I in the treatment group when compared with the LPS group. Quercetin significantly decreased protein expressions of AMPKα1, LC3-I, and LC3-II. Quercetin significantly decreased the protein expression to CASP1 and CASP3 by immunohistochemical investigation or Western blotting in treatment group when compared with LPS group.Conclusion Quercetin alleviates cardiac inflammation induced by LPS through modulating autophagy, programmed cell death, and myocardiocytes permeability.

Objective To investigate the effect of hedysarum polysacchcaide(HPS)on nuclear transcription factor-κB(NF-κB)/IκB kinase β(IKKβ)signaling pathway in cardiac tissue of db/db mice with diabetic cardiomyopathy(DCM).Methods Altogether 60 7-week-old male db/db mice were randomly divided into model group,control group and experimental-H,-M,-L groups,with 12 mice in each group.In addition,12 db/m mice of the same week age were selected as the normal group.Normal group and model group were given 0.9％NaCl by intragastric administration.Experimental-L,-M,-H groups were given 50,100 and 200 mg·kg-1 HPS suspension by intragastriction,respectively.Control group was given 4 mg·kg-1 rosiglitazone suspension by intragastric administration.Six groups of rats were given the drug once a day for 8 weeks.The contents of tumor necrosis factor-α(TNF-α)and interleukin-6(IL-6)in myocardial tissue were detected by enzyme-linked immunosorbent assay.The mRNA expression levels of NF-κB and IKKβ in myocardial tissue were detected by real-time fluorescence quantitative polymerase chain reaction.The correlation between the expression of NF-κB protein and the content of TNF-α and IL-6 was analyzed.Results The contents of IL-6 in myocardial tissue of normal,model,control and experimental-H groups were(1.24±0.54),(7.72±0.24),(2.90±0.50)and(2.78±0.56)ng·L-1;the contents of TNF-α were(1.96±0.52),(5.25±0.72),(2.84±0.86)and(2.82±0.58)ng·L-1;the mRNA expression levels of NF-κB were I.00±0.00,3.35±0.81,2.05±0.44 and 1.67±0.22;the mRNA expression levels of IKKβ were 1.00±0.00,2.92±0.07,1.51±0.07 and 1.41±0.08,respectively.Compared with the model group,the above indexes of the control and experimental-H groups were statistically significant(P＜0.01,P＜0.05).The expression of NF-κB protein was positively correlated with the content of IL-6 and TNF-α,and the correlation coefficients were 0.866 and 0.740(all P＜0.01).Conclusion HPS can alleviate the damage of myocardial pathology in mice,reduce myocardial collagen deposition and fibrosis,its mechanism may be through regulating the expression of NF-κB/IKKβ signaling pathway to play a role in inhibiting the inflammatory reaction.