OBJECTIVES: To investigate the protective effects of graphene heating film far-infrared (FIR) hyperthermia therapy against frostbite in mice and its impacts on microcirculation and coagulation function. METHODS: Seventy-six C57BL/6J mice were randomized into control, model, graphene-FIR, and carbon fiber-FIR groups. After 7-day FIR intervention (4 h/day), the mice were subjected to acute (4 ℃, 4 h) and intermittent (4 ℃, 4 h/day for 3 days) cold exposure and the changes in rectal temperature were monitored. In liquid nitrogen frostbite experiment, 24 ICR mice were divided into model, graphene-FIR, and carbon fiber-FIR groups, and after a 7-day FIR pretreatment (4 h/day), the liquid nitrogen frostbite models were established and apparent scores of the wounds were assessed on days 3 and 6 after modeling. In carrageenan-induced thrombosis experiment, 40 ICR mice were allocated to control, model, graphene-FIR, carbon fiber-FIR, and prazosin groups to test the effect of a 7-day FIR intervention on thrombosis induced by intraperitoneal carrageenan injection (2.5 mg/kg) by measuring thrombus length, blood perfusion, and serum biomarkers (6-keto-PGF1α, TXB2, t-PA, IL-6, IL-1β, TNF‑α) 24 h after the injection. RESULTS: The mice in graphene-FIR group showed significantly elevated rectal temperature in cold exposure tests. In mice with liquid nitrogen-induced frostbite, graphene-FIR treatment significantly reduced the wound scores and reduced frostbite area, producing better effects than carbon fiber. In mice with carrageenan-induced thrombosis, graphene-FIR treatment significantly decreased tail thrombosis length and thrombosis area, increased blood perfusion, lowered serum levels of TXB2, TNF-α and IL-6, and increased the levels of 6-keto-PGF1α and t-PA. CONCLUSIONS Graphene heating film FIR therapy can alleviate frostbite injury in mice by improving microcirculation, suppressing thrombosis and inflammatory responses, and reducing coagulation dysfunction.
Animals ; Frostbite/therapy* ; Graphite ; Mice, Inbred C57BL ; Mice ; Infrared Rays ; Mice, Inbred ICR ; Hyperthermia, Induced/methods* ; Male ; Microcirculation

Objective To investigate the influence of intravenous esketamine infusion on anesthetic effect and awakening quality in elderly patients undergoing laparoscopic surgery for prostate cancer.Methods One hundred and twenty patients with laparoscopic radical prostatectomy were selected and divided into the esketamine group(group E)and control group(group C)by the random number table method,60 ca-ses in each group.The group E used esketamine for anesthesia induction and maintenance,while the group C received the same amount of physiological saline at the same time during operation process as control.The es-ketamine pumping infusion or normal saline in the two groups was stopped at 30 min before operation end.In addition,the types and doses of other drugs used during the induction and maintenance phase of anesthesia were identical between the two groups.The use total amounts of anesthetic drugs during perioperative period were recorded.The heart rate(HR)and mean arterial pressure(MAP)were recorded before operation(T1),instantly before tracheal intubation(T2),at 1 min after tracheal intubation(T3),1 h during surgery(T4),end of skin suture(T5),and 5 min after extubation(T6)in the two groups respectively;the anesthetic recovery time after extubation was recorded.The Riker sedation and restlessness score was used to conduct the agita-tion evaluation,the incidence rates of agitation and bucking and the resuscitation room stay time were recor-ded.The pain VAS score was used to conduct the pain evaluation in the patients.The incidence rates of ad-verse events such as respiratory depression,shiverring,nausea,vomiting,drowsiness after extubation were re-corded.Results The perioperative doses of resutanil and propofol in the group E were significantly lower than those in the group C,and the difference was statistically significant(P＜0.05).HR and MAP at T2 in the group E were higher than those in the group C,while HR and MAP at T3 in the group E were lower than those in the group C.The recovery time after extubation in the group E was longer than that in the group C,the agitation incidence rate,acute bucking incidence rate and VAS score were lower,the stay time in the recov-ery room was shorter.The incidence rate of drowsiness in the group E was significantly higher than that in the group C(P＜0.05).The incidence rates of other adverse events had no statistical differnece(P＞0.05).Con-clusion Esketamine is safe and effective in the elderly patients with laparoscopic prostate cancer surgery,which is conducive to stabilize the hemodynamic parameters and reduce the incidence rate of agitation and buc-king.

TCM believes that the main pathogenesis of gastrointestinal dysfunction (GD) after laparoscopic cholecystectomy (LC) is spleen and stomach weakness, liver and stomach disharmony, liver depression and spleen deficiency, and intestinal depression. Moxibustion in the treatment of GD after LC can avoid the aggravation of gastrointestinal burden caused by oral drugs. The intervention methods mainly include suspension moxibustion, umbilical moxibustion, heat sensitive moxibustion, thunder fire moxibustion, warm acupuncture, partition moxibustion, etc. Moxibustion is often performed on the acupoints in liver meridian, spleen meridian, stomach meridian, small intestine meridian, large intestine meridian and Conception Vessel, such as Taichong (LR3), Ganshu (BL18), Yinlingquan (SP9), Zusanli (ST36), Tianshu (ST25), Wangu (SI4), Hegu (LI4), Zhongwan (CV12), Shenque (CV8) and Qihai (CV6). At present, most studies combined with moxibustion on the basis of conventional Western medicine treatment can significantly improve the efficacy, and have certain advantages in improving gastrointestinal motility decline, intestinal flora imbalance, first exhaust time, gastrointestinal hormone level disorder and intestinal mucosal barrier dysfunction. However, there are still some problems in the existing research: small sample size of clinical research, not perfect scoring scale, not unified treatment plan and operation standard, relatively scarce basic research, relatively simple acupoint research, lack of biochemical evaluation indicators, and the research of national moxibustion needs to be explored and improved in the future.

AIM: To investigate the relationship between vascular smooth muscle cell (VSMC) injury, organelle stress response and autophagic cell death (autophagy) and ferroptosis induced by the chemical hypoxia inducer cobalt chloride (CoCl2) through the bioinformatics analysis and in vitro cell experimentation. METHODS: The dataset GSE119226 of VSMC treated with cobalt chloride was acquired from the gene expression database (GEO). The R language was used to investigate the relationship between CoCl2 treatment and organelle stress response (Golgi stress, endoplasmic reticulum stress) and two forms of cell death (ferroptosis and autophagic cell death). With primary cultured rat VSMC (rVSMC) and CoCl2-induced anoxia model, the changes in cell viability were detected by CCK-8 method, and reactive oxygen species (ROS) levels were measured using DCFH-DA method. The expression levels of HIF-1α (a key molecule in hypoxia), Golgi stress markers GM130 and p115, endoplasmic reticulum stress markers GRP78 and CHOP, autophagy markers LC3-II / LC3-I and Beclin1, and ferroptosis markers GPx4 and xCT were detected by Western blot. The effect of inducing or inhibiting organelle stress and cell death on the CoCl2-induced cell damage was also observed. RESULTS: Differentially expressed genes analysis of GSE119226 dataset showed that CoCl2 treatment of VSMCs had significant effects on organelle function and stress response, autophagy and ferroptosis-related genes, in which endoplasmic reticulum stress, protein processing in endoplasmic reticulum, regulation of Golgi to plasma membrane protein transport, autophagy / autophagic cell death, and ferroptosis pathways were remarkably enriched. The results of in vitro experiment showed that compared with normal rVSMC, cell viability was significantly decreased after CoCl2 treatment, as well as HIF-1α protein expression and ROS levels in rVSMCs were increased. In rVSMC treated with Co-Cl2, the expression levels of Golgi structural proteins GM130 and p115 (reflecting the occurrence of Golgi stress) were decreased, while the markers GRP78 and CHOP (reflecting the occurrence of endoplasmic reticulum stress) were increased. At the same time, CoCl2 treatment also reduced the expression of autophagy markers LC3-II/LC3-I and Beclin1 (indicating the decrease levels of autophagy), while the expression of ferroptosis markers GPx4 and xCT were decreased (indicating the occurrence of ferroptosis). Compared with CoCl2 treatment group, induced Golgi stress, endoplasmic reticulum stress, or ferroptosis could further reduce cell viability, while inhibition of these processes could improve cell viability. On the other hand, increasing the level of autophagy can improve the cell viability. CONCLUSION: Hypoxia induced by cobalt chloride can lead to VSMC injury. Golgi stress, endoplasmic reticulum stress, ferroptosis, and the reduction of autophagy level play an important role in it. Inhibition of organelle stress response and ferroptosis, or increase of autophagy level can improve VSMC injury caused by cobalt chloride.

Objective:To evaluate the value of Treponema pallidum ( Tp)-specific antibody index in the diagnosis, staging, and typing of neurosyphilis (NS). Methods:Fifty patients diagnosed with NS at the West China Hospital of Sichuan University from March 2020 to December 2022 were recruited as the experimental group, and 50 non-NS syphilis patients were enrolled during the same period as the control group. Cerebrospinal fluid (CSF) and matched serum samples along with clinical data were collected. Clinical and Laboratory Standards Institute (CLSI) EP06-Ed2 file was used to analyze the linear range of electrochemiluminescence immunoassay for Tp-specific antibody detection, and the Tp antibody index was calculate for all subjects. The correlation of Tp antibody index, IgG index, IgG synthesis rate, and albumin quotient with other clinical indicators was evaluated by the coefficient of correlation, and the diagnostic efficacy of these indicators in NS was analyzed using the receiver operating characteristic (ROC) curve. Results:All the deviations from linearity of electrochemiluminescence immunoassay for detecting Tp antibodies in serum and CSF samples were within the allowable deviation from linearity. Compared with the non-NS group, the NS group showed a significant increase in the Tp antibody index ( P<0.05), with no significant differences observed among the groups of different subtypes, severity, or receiving treatment or not ( P>0.05). Tp antibody index, IgG index, and IgG synthesis rate were positively correlated with serum Tp antibody, CSF Tp antibody, trace protein, and nucleated cell count ( P<0.05). Taking 14.99 as the cut-off value for NS diagnosis, the diagnostic sensitivity of Tp antibody index was 74.0% (95%CI: 60.5%-84.1%), and the specificity was 94.0% (95%CI: 83.8%-98.4%), with the area under the ROC curve of 0.897, which was larger than that of albumin quotient, IgG index, and IgG synthesis rate. Conclusions:This study finds a significant increase in the Tp antibody index in NS patients with good diagnostic sensitivity and specificity, providing reference for the diagnosis of NS.

Objective:To explore the effect of minimally invasive hematoma puncture and drainage in the treatment of elderly patients with cerebral hemorrhage by using 3D slicer and Sina software to conduct 3D reconstruction and preoperative localization of intracerebral hematoma.Methods:A total of 74 elderly patients with a first-onset intracerebral hematoma aged ≥75 years, having surgical indications and stable vital signs were grouped into 3D slicer plus Sina software localization group(as group A, n=40)or CT localization group(as group B, n=34). Based on the localization, hematoma puncture and drainage were performed after local anesthesia.Preoperative preparation time, hematoma location, puncture success rate, postoperative hematoma clearance rate, postoperative re-bleeding rate and GCS score were statistically analyzed.Glasgow coma scale(GCS)scores were used in predicting the mortality.Results:The preoperative preparation time was significantly shorter in group A than in group B[(5.5±3.4)min vs.(8.5±2.7)min, t=3.337, P=0.001]. The success rate of hematoma puncture and drainage(90.0% and 70.6%, χ2=4.51, P=0.034)and postoperative hematoma clearance rate[(87.5±3.4)% and(80.3±2.7)%, t=10.10, P=0.000]were higher in group A than in group B. There were no significant differences in operative time, the accuracy of hematoma localization, re-bleeding rate and GCS score between the two groups( P>0.05). Conclusions:3D slicer plus Sina software can precisely locate the intracerebral hematoma, and minimally invasive hematoma puncture and drainage of intracerebral hematoma under local anesthesia were safe and effective in the treatment of elderly patients with intracerebral hemorrhage.

Objective:To explore the value and technique details of the overlay reconstruction technique of angiography in surgical planning of scalp arteriovenous fistulas.Methods:The clinical data of patients admitted from February 2014 to April 2020 in the Neurosurgical Department of Second Affiliated Hospital of Soochow University with scalp arteriovenous fistulas were analyzed retrospectively. Preoperative angiography was carried out in all patients for diagnosis, and the angiographical data was obtained without injection of the contrast agent by the mode of XperCT Cereb. Fast HD followed by three-dimension rotation angiography (3DRA) with the contrast agent. The overlay reconstruction was achieved for surgical planning to demonstrate feeding arteries and drainage veins surrounding the fistula. Surgeries were conducted by resection or devascularization of the lesion. All patients were followed up in the out-patient clinic to assess the healing and to detect the symptomatic recurrence and scalp necrosis. The pathological changes of the lesion were observed by HE staining.Results:Five patients were enrolled in this study, including three males and two females aged from 10 to 60 years old (average 34.2-year-old). Pulsatile mass of local scalp was presented in all patients, one with a thin scalp. Five patients suffered from five scalp arteriovenous fistulas, including three on the right side and two on the left. Feeding arteries mainly originated from the superficial temporal artery were confirmed in four cases, and the posterior auricular artery in one case. Single venous drainage was noted in two cases, as well as multiple drainage veins in three cases. Three lesions were supplied by unilateral feeding arteries, while bilateral feeding arteries supplied the rest lesions. Two fistulas were treated by resection, two were treated by devascularization, and one was treated by resection with skin grafting. One lesion was fed by a single artery, three lesions were fed by two arteries, and one lesion was fed by three arteries. Three lesions were fed by unilateral arteries, and two lesions were fed by bilateral arteries. Single fistula was detected in one lesion and multiple fistulas in four lesions. Single drainage was confirmed in two lesions, doubled drainages in two lesions, and tripledrainages in one lesion. All patients experienced surgical treatment in one stage.Two patients underwent complete resection of the lesion, two with complete devascularization, and one with autologous thigh skin grafting after resection. Postoperative pathological examination demonstrated dilated and congested vascular lumen, which was consistent with arteriovenous fistula. All patients healed well after surgery. With13-87 months follow-up, no recurrence and necrosis were noted. Two were reexamined by cerebral angiography, which showed no recurrence.Conclusions:Digital subtraction angiography facilitates the diagnosis of scalp arteriovenous fistula accurately and effectively. The overlay reconstruction technique of angiography is crucial for precise localization of fistula shunt and the surrounding feeders and drainages, which is helpful for surgical planning.

Objective:To explore the value and technique details of the overlay reconstruction technique of angiography in surgical planning of scalp arteriovenous fistulas.Methods:The clinical data of patients admitted from February 2014 to April 2020 in the Neurosurgical Department of Second Affiliated Hospital of Soochow University with scalp arteriovenous fistulas were analyzed retrospectively. Preoperative angiography was carried out in all patients for diagnosis, and the angiographical data was obtained without injection of the contrast agent by the mode of XperCT Cereb. Fast HD followed by three-dimension rotation angiography (3DRA) with the contrast agent. The overlay reconstruction was achieved for surgical planning to demonstrate feeding arteries and drainage veins surrounding the fistula. Surgeries were conducted by resection or devascularization of the lesion. All patients were followed up in the out-patient clinic to assess the healing and to detect the symptomatic recurrence and scalp necrosis. The pathological changes of the lesion were observed by HE staining.Results:Five patients were enrolled in this study, including three males and two females aged from 10 to 60 years old (average 34.2-year-old). Pulsatile mass of local scalp was presented in all patients, one with a thin scalp. Five patients suffered from five scalp arteriovenous fistulas, including three on the right side and two on the left. Feeding arteries mainly originated from the superficial temporal artery were confirmed in four cases, and the posterior auricular artery in one case. Single venous drainage was noted in two cases, as well as multiple drainage veins in three cases. Three lesions were supplied by unilateral feeding arteries, while bilateral feeding arteries supplied the rest lesions. Two fistulas were treated by resection, two were treated by devascularization, and one was treated by resection with skin grafting. One lesion was fed by a single artery, three lesions were fed by two arteries, and one lesion was fed by three arteries. Three lesions were fed by unilateral arteries, and two lesions were fed by bilateral arteries. Single fistula was detected in one lesion and multiple fistulas in four lesions. Single drainage was confirmed in two lesions, doubled drainages in two lesions, and tripledrainages in one lesion. All patients experienced surgical treatment in one stage.Two patients underwent complete resection of the lesion, two with complete devascularization, and one with autologous thigh skin grafting after resection. Postoperative pathological examination demonstrated dilated and congested vascular lumen, which was consistent with arteriovenous fistula. All patients healed well after surgery. With13-87 months follow-up, no recurrence and necrosis were noted. Two were reexamined by cerebral angiography, which showed no recurrence.Conclusions:Digital subtraction angiography facilitates the diagnosis of scalp arteriovenous fistula accurately and effectively. The overlay reconstruction technique of angiography is crucial for precise localization of fistula shunt and the surrounding feeders and drainages, which is helpful for surgical planning.

Atrial fibrillation (AF) is one of the most common arrhythmias, associated with high morbidity, mortality, and healthcare costs, and it places a significant burden on both individuals and society. Anti-arrhythmic drugs are the most commonly used strategy for treating AF. However, drug therapy faces challenges because of its limited efficacy and potential side effects. Catheter ablation is widely used as an alternative treatment for AF. Nevertheless, because the mechanism of AF is not fully understood, the recurrence rate after ablation remains high. In addition, the outcomes of ablation can vary significantly between medical institutions and patients, especially for persistent AF. Therefore, the issue of which ablation strategy is optimal is still far from settled. Computational modeling has the advantages of repeatable operation, low cost, freedom from risk, and complete control, and is a useful tool for not only predicting the results of different ablation strategies on the same model but also finding optimal personalized ablation targets for clinical reference and even guidance. This review summarizes three-dimensional computational modeling simulations of catheter ablation for AF, from the early-stage attempts such as Maze III or circumferential pulmonary vein isolation to the latest advances based on personalized substrate-guided ablation. Finally, we summarize current developments and challenges and provide our perspectives and suggestions for future directions.

Objective:To explore the clinical value of mean platelet volume/platelet count ratio(MPV/PLT)in predicting short-term prognosis of elderly patients with acute exacerbation of chronic obstructive pulmonary disease(AECOPD).Methods:A total of 226 elderly patients with AECOPD admitted to our hospital from January 2017 to January 2019 were retrospectively enrolled as research subjects.All cases were divided into the survival group(n=175)and the death group(n=51), based on prognosis 28-day after admission.General data and laboratory test results were compared between the two groups.The relevant factors for death were analyzed by the Logistic regression equation.The receiver operating characteristic(ROC)curve was used to evaluate the prognostic value of MPV/PLT, and the Kaplan-Meier survival curve was drawn according to the cut-off.Methods:Compared with the survival group, Acute Physiology and Chronic Health Status Evaluation(APACHEⅡ)score, levels of procalcitonin(PCT), high-sensitivity C-reactive protein(hs-CRP), creatinine, neutrophil count(NEU), lymphocyte count(LYM)and MPV were elevated, and levels of albumin and PLT decreased in the death group( P<0.05). Hospital stay lengths and costs were higher in the death group than in the survival group( P<0.05). The level of MPV/PLT was higher in the death group than in the survival group(0.065±0.016 vs.0.054±0.013, t=5.036, P<0.01). Multivariate Logistic regression showed that MPV/PLT was an independent risk factor for recent death( OR=2.331, 95% CI: 1.772-8.224, P<0.01). ROC curve analysis showed that the area under the curve(AUC)of MPV/PLT was 0.829, the sensitivity was 83.41%, the specificity was 82.80%, and the cut-off was 0.061.Optimal cut-off value analysis showed that APACHEⅡ score, PCT and hs-CRP levels and mortality were higher in patients with MPV/PLT≥0.061 than in patients with MPV/PLT<0.061( P<0.05). The Kaplan Meier survival curve showed that the cumulative survival rate was lower in those with MPV/PLT≥0.061 than in those with MPV/PLT<0.061( Log- rank=6.323, P<0.05). Conclusions:The increase of MPV/PLT may be an independent risk factor for recent death in elderly patients with AECOPD and has good clinical value in predicting poor prognosis.