Coagulation Function Research Articles

Progress in application of medical absorbable haemostatic materials for haemostasis in orthopaedic surgery

The application progress of medical absorbable haemostatic material (MAHM) in hemostasis during orthoapedic surgery was reviewed, in order to provide reference for clinical hemostasis program. The domestic and foreign literature on the application of MAHM for hemostasis in orthopedic surgery was extensively reviewed and summarized. According to biocompatibility, MAHM can be divided into oxidized cellulose/oxidized regenerated cellulose materials, chitosan and its derivatives materials, starch materials, collagen and gelatin materials, and fibrin glue materials, etc., which can effectively reduce blood loss when used in orthopedic surgery for hemostasis. Each hemostatic material has different coagulation mechanism and suitable population. Oxidized cellulose/oxidized regenerated cellulose, chitosan and its derivatives, starch hemostatic material mainly stops bleeding by stimulating blood vessel contraction and gathering blood cells, which is suitable for people with abnormal coagulation function. Collagen, gelatin and fibrin glue hemostatic materials mainly affect the physiological coagulation mechanism of the human body to stop bleeding, suitable for people with normal coagulation function. Reasonable selection of MAHM can effectively reduce perioperative blood loss and reduce the risk of postoperative complications, but at present, single hemostatic material can not meet clinical needs, and a new composite hemostatic material with higher hemostatic efficiency needs to be developed.

Abstract 4136501: Machine Learning Uncovers the Contribution of Rare Genetic Variants and Enhances Risk Prediction for Coronary Artery Disease in the Japanese Population

Background: Genome-wide association studies (GWASs) have enhanced our understanding of the genetic basis of coronary artery disease (CAD), and polygenic risk scores (PRSs) have facilitated the assessment of genetic risk. However, these methods predominantly focus on common variants due to statistical power, potentially leaving rare variants insufficiently analyzed and thus limiting the predictive performance of PRS. Methods: We conducted whole genome sequencing (WGS) of 1,752 Japanese early-onset myocardial infarction (MI) patients and 3,019 controls from Biobank Japan (BBJ). We performed case-control association studies including GWAS and gene-based tests, as well as a novel machine learning-based framework. In this framework, we developed a penalized regression model to predict the CAD status from genome-wide rare nonsynonymous variants. The model identified the minimal set of most distinguishing features (genes) and generated a rare variant-based risk score (RVS). The RVS was evaluated on an independent validation WGS cohort of 200 cases and 824 controls. We also derived a PRS based on CAD-GWAS (25,668 CAD cases vs 141,667 controls from BBJ) to compare the properties and performance between the RVS and PRS. Results: In the case-control studies, only two common variants in chromosome 12 were identified in GWAS, with no genes in gene-based analysis (SKAT-O), suggesting the challenges in rare variant analysis. On the other hand, our machine-learning framework identified 59 CAD-related genes, including LDLR , a causal gene of familial hypercholesteremia. Functional analyses revealed that various biological pathways, including lipid metabolism, immune system, and vessel development, are involved in CAD. For the genetic risk prediction, RVS significantly predicted CAD (area under the curve [AUC], 0.58; p=0.001, pseudo-R 2 , 0.051; p=7.92*10 -9 ). RVS was significantly associated with LDL cholesterol levels and coagulation function (Pearson’s r, 0.21; p=4.5*10 -5 and 0.10; p=0.03, respectively) and MI patients with high RVS (top 5%) showed higher cardiovascular mortality rate (p=0.03, log-rank test), highlighting the clinical importance of RVS. Finally, the combined risk score (CRS) of RVS and PRS significantly improved CAD prediction compared to PRS (AUC, 0.66 (CRS) vs 0.61 (PRS); p=0.007, pseudo-R 2 , 0.093 (CRS) vs 0.040 (PRS); p=0.0018, Figure ). Conclusions: Our machine learning framework successfully characterized rare variants and enhanced genetic risk prediction in CAD.

Safe Use of Intraspinal Anesthesia in Geriatric Orthopedic Surgery and Its Effect on Coagulation Factors

Objective This study aimed to observe the safe use of intraspinal anesthesia in geriatric orthopedic surgery and its effect on coagulation factors. Methods The anesthesia indices, cognitive functions, hemodynamic indicators, along with coagulation function indices were compared. The duration of anesthesia was compared between the two groups. Adverse reactions occurring in the two groups of patients were compared. Results The time to awaken, time to open eyes, time to the verbal statement, the onset of anesthesia, duration of sensory blockade, and duration of motor nerve blockade were shorter while the duration of analgesia was longer in the observation group than in the control group. The observation group’s postoperative Mini-Mental State Examination scores were higher than those of the control group. Heart rate and mean arterial pressure of the patients in the observation group at 10 min after anesthesia and at the end of surgery were lower versus those in the control group. The observation group had lower levels of von Willebrand factor (%) and fibrinogen at 10 min after anesthesia and at the end of surgery than the control group, and lower levels of the thrombin-antithrombin complex at the end of surgery than the control group. The observation group exhibited a lower incidence of adverse reactions in contrast to the control group. Conclusion The application of intraspinal anesthesia in geriatric orthopedic surgery has a significant and remarkable effect, with less impact on patients’ hemodynamics and postoperative cognitive function, and can improve patients’ blood hypercoagulability.

A comprehensive evaluation system for ultrasound-guided infusion of human umbilical cord-derived MSCs in liver cirrhosis patients.

Infusion of mesenchymal stem cells (MSCs) via portal vein is one of the main ways for MSCs transplantation to treat liver cirrhosis (LC). As the tissue of LC showed diffuse fibrosis and thickened Glission sheath, the soft pig-tail catheter, or central venous catheter can not successfully insert the portal vein. Thus, our study used an improved method and performed a relatively comprehensive system to evaluate the effect for human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) transplantation. Fifteen patients with hepatitis B-related cirrhosis were enrolled in the study, and we performed hUC-MSCs transplantation via portal vein by using an 16-G needle and 0.035-inch guide wire combined with 7FR "retentional metal stiffner trocar" of pig-tail catheter under the guidance of contrast-enhanced ultrasound. Serum liver function, fibrotic indicators, tissue stiffness, coagulation function, and hemodynamics were measured at weeks 4, 12, and 24 after MSCs transplantation. Liver biopsy was performed before and 24 weeks after hUC-MSCs transplantation. After hUC-MSCs transplantation, the prothrombin time was lower than before. The levels of hyaluronic acid and IV-C(Type IV collagen) in fibrotic indicators were significantly reduced, and the Young's modulus was also decreased. Moreover, liver biopsy showed that the lytic necrosis of hepatocyte was decreased. In liver hemodynamics, the portal vein diameter was decreased after hUC-MSCs transplantation. hUC-MSCs transplantation can alleviate liver damage caused by LC. The improved "retentional metal stiffner trocar" of pig-tail catheter was safe and effective in the infusion of hUC-MSCs transplantation, which is worth promoting in clinical practice.

Perioperative Application of Point-of-care Test for Blood Viscoelasticity: A Good Choice for Coagulation Management

Point-of-care test (POCT) of blood viscoelasticity can reflect the coagulation status of patients accurately and timely. POCT can be used to monitor the effect of preoperative antithrombotic drugs on coagulation function, which will inform the selection of appropriate surgical timing. It can also be applied to analyze the reasons of intraoperative bleeding and guide the transfusion of blood products. Also, it is useful to assess the risk of postoperative thromboembolism and hint the need for prophylactic anticoagulation. This article mainly introduces the principles and clinical application of several frequently used POCTs for blood viscoelasticity, with a focus on their role in special types of diseases in which coagulation function changes significantly, such as cardiac disease, trauma, pathological obstetrics, and liver disease. Furthermore, we describe the role of microparticle in coagulation, which is a novel potential biomarker for diagnosing thrombotic disorders and possesses potential to be applied in POCTs of blood viscoelasticity.

Preparation and Performance study of covalently polymerized dust suppressant via Maillard reaction

To effectively address coal dust pollution, the amino group (−NH2) in soy protein isolate was reacted with the carbonyl group (C=O) produced by corn starch through the Maillard reaction, overcoming the disadvantages of the existing modification methods such as sophisticated process and toxic monomer, and the optimal surfactant was determined to be SDBS by sedimentation experiments, an environmentally friendly polyhydroxy dust suppressant with both wetting and coagulation functions was finally prepared. The structural changes of the product, the reaction mechanism, and the microscopic morphology of the coal were analyzed by FTIR, XRD, and SEM. The large amount of hydroxyl groups (-OH) contained in the dust suppressant, combined with the oxygen-containing groups of the coal dust, is able to form hydrogen bonds, which promotes the agglomeration of the coal dust. The wind erosion resistance rates of this dust suppressant were 99.87 % and 99.01 % at wind speeds of 6 m/s and 12 m/s, respectively.

The associations between exposure to ambient air pollution and coagulation markers and the potential effects of DNA methylation

Previous studies have illustrated the pivotal role of coagulation biomarkers in the link between air pollution and cardiovascular disease (CVD). However, inconsistencies remain in the conclusions, with limited studies conducted in rural areas of China. We conducted a panel study in rural areas of Henan Province, China. Considering the potential effect modifications of atherosclerotic cardiovascular disease (ASCVD) risks, 104 participants were enrolled, comprising two matched groups: 52 with high ASCVD risks and 52 with low ASCVD risks. DNA methylation at CpG sites and coagulation indices were measured for all participants. Linear mixed-effect regression models were used to evaluate the associations between ambient air pollution, coagulation biomarkers, and DNA methylation. We observed that for every 5-day standard deviation (SD) increment of PM2.5 (11.91μg/m³) and PM10 (13.65μg/m³), fibrinogen increased by 7.70% (95%CI: 2.27, 13.12) and 8.50% (95%CI: 2.46, 14.55), respectively. SO2 (6.95μg/m³) was associated with 40.25% (95%CI: 14.83, 65.67) increase in plasminogen activator inhibitor-1 (PAI-1). Decreased methylation at CpG sites was associated with exposure to air pollution. However, DNA methylation did not mediate the association between ambient air pollution and coagulation. Our study revealed the harmful impact of ambient air pollution on coagulation function but found no significant mediation effects of DNA methylation.

Transcriptome Profiles Characteristics of the Peripheral Immune in Patients with Severe Fever with Thrombocytopenia Syndrome.

Severe fever with thrombocytopenia syndrome (SFTS) is an acute viral infection disease with a high mortality, but there are no specific effective drugs or vaccines available for use. To develop effective treatment methods, more basic researches are urgently needed to elucidate the response mechanisms of patients. Here, we conducted the transcriptomic analysis of peripheral immunity in 14 SFTS patients, ranging from moderate infection to severe and fatal disease. The results showed orderly cytokine signaling pathway modulation in moderate patients, cellular immunosuppression in severe patients, and significant dysregulation of the inflammatory response and coagulation dysfunction characteristic of deceased patients. In addition, WGCNA further showed a significant positive correlation between fatal outcomes and B cell and immunoglobulin mediated immune function modules, as well as a significant negative correlation with coagulation function modules. Overall, our research findings systematically observed potential immune mechanisms underlying clinical symptom heterogeneity and noteworthily revealed multiple signaling pathways leading to coagulation dysfunction in fatal outcomes, not just related to decreased platelet count, which can further elucidate the interaction between viruses and hosts and contribute to clinical treatment.

Correlations between coagulation abnormalities and inflammatory markers in trauma-induced coagulopathy.

In multiple trauma patients, the occurrence of trauma-induced coagulopathy (TIC) is closely associated with tissue damage and coagulation function abnormalities in the pathophysiological process. This study established a multiple trauma and shock model in Sprague-Dawley (SD) rats and comprehensively utilized histological staining and radiographic imaging techniques to observe injuries in the intestine, liver, skeletal muscles, and bones. Monitoring activated partial thromboplastin time (APTT), platelet (PLT) count, respiratory rate, blood pressure, and other physiological indicators revealed time-dependent alterations in coagulation function and physiological indicators. Enzyme-linked immunosorbent assay (ELISA) measurements of inflammatory factors Tumor Necrosis Factor-alpha (TNF-α), Interleukin-6 (IL-6) and vascular endothelial injury marker (Syndecan-1) were also conducted. Experimental results demonstrated significant changes in tissue structure after multiple traumas, although widespread necrosis or hemorrhagic lesions were not observed. There were time-dependent alterations in coagulation function and physiological indicators. ELISA measurements showed a strong positive correlation between the significant decrease in PLT count and the increase in TNF-α and IL-6 concentrations. The study provides crucial information for the early diagnosis and treatment of TIC. The findings suggest that structured monitoring of coagulation and inflammatory indicators can help in understanding the pathophysiological changes and aid in the management of TIC in multiple trauma patients.

The Effect of Intermittent Pneumatic Compression Device Combined with Low-Molecular-Weight Heparin on the Prevention of Deep Vein Thrombosis in Elderly Patients after Femoral Neck Fracture Surgery.

Aims/Background Femoral neck fractures in elderly patients carry a high risk of developing deep vein thrombosis (DVT) due to prolonged immobilization and surgical intervention. This study examines the effectiveness of combining intermittent pneumatic compression (IPC) with low-molecular-weight heparin (LMWH) for preventing DVT in elderly patients following femoral neck fracture surgery. Methods A total of 150 elderly patients with femoral neck fractures, admitted between January 2022 and January 2024, were retrospectively selected, and their clinical data were analyzed. Based on the treatment methods, the patients were divided into a control group (n = 71) and a study group (n = 79). The control group received LMWH treatment, while the study group received a combination of LMWH and IPC. The incidence of DVT, surgical outcomes, hip joint function, coagulation function indicators, hemodynamic indicators, and serum pro-inflammatory factors were compared between the two groups. Results The results showed that the incidence of DVT in the study group was lower than in the control group (p = 0.017). There were no significant differences between the two groups in terms of intraoperative blood loss, postoperative drainage volume, or Harris scores (p > 0.05). After the intervention, the study group demonstrated higher levels of average velocity (Va), peak blood flow velocity (Vp), and blood flow (BF) compared to the control group (p < 0.05). Additionally, the activated partial thromboplastin time (APTT) and prothrombin time (PT) were longer, while the D-dimer (D-D) level was lower in the study group (p < 0.05). The study group also exhibited lower levels of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interleukin-8 (IL-8) (p < 0.05). Conclusion The results indicate that combining IPC with LMWH effectively reduces the incidence of postoperative DVT in elderly patients with femoral neck fractures, improves venous blood flow in the lower limbs, reduces vascular inflammation, and ensures safety.

Efficacy and safety of Danlou tablets in the treatment of stable angina pectoris with intermingled phlegm and blood stasis syndrome in coronary heart disease: a multicenter randomized controlled study

ObjectivesIn this study, we assessed the clinical efficacy and safety of Danlou tablets in the treatment of stable angina pectoris (SAP) with intermingled phlegm and blood stasis (IPBS), to provide high-quality evidence-based medical evidence for the prevention and treatment of coronary heart disease.MethodsIn this multicenter randomized controlled study, 304 patients diagnosed with stable angina pectoris with IPBS enrolled from 12 national traditional Chinese medicine (TCM) clinical research centers in China were randomly assigned to the treatment group and the control group at a ratio of 1:1. Each group was divided into four subgroups based on the results of TCM syndrome differentiation: IPBS, IPBS combined with qi deficiency, IPBS combined with qi stagnation, and IPBS combined with toxin accumulation. The control group was treated with routine Western medicine. In addition to routine Western medicine treatment, the treatment group (the IPBS group) was treated with Danlou tablets or Danlou tablets supplemented by interventional therapies based on the results of traditional Chinese medicine differentiation. The frequency of angina attacks per week was the main efficacy evaluation indicator and the secondary efficacy evaluation indicators included angina symptom score, Seattle Angina Questionnaire, an electrocardiogram (ECG) efficacy evaluation, a cardiac Doppler two-dimensional ultrasound, an electrocardiogram treadmill exercise test, blood lipids, blood glucose, a coagulation function test, hemorheology indicators, homocysteine, C-reactive protein (CRP) or high sensitivity-CRP, TCM syndromes (syndrome score, tongue, pulse), and long-term prognosis (endpoint outcome, cardiovascular events).ResultsThere were 300 cases in the full analysis set (FAS), 266 in the per-protocol set (PPS), and 300 in the safety set. Regarding the main efficacy indicator, after treatment, the reduction in the frequency of weekly angina attacks in the treatment group was significantly greater than that in the control group (P &amp;lt; 0.05). The results of the FAS and PPS were consistent. Regarding the secondary efficacy evaluation indicators, the angina symptom, TCM syndrome, ECG evaluation, Seattle Angina Pectoris Questionnaire, and 36-item Health Status Survey Summary Form scores of the treatment group were significantly higher than the control group (P &amp;lt; 0.05) and the homocysteine levels of the treatment group were significantly reduced (P &amp;lt; 0.05). The results of the FAS and PPS were consistent. In the PPS, the triglyceride levels in the treatment group were significantly lower than those in the control group after treatment (P &amp;lt; 0.05). The activated partial thromboplastin time in the treatment group decreased significantly (P &amp;lt; 0.05). There was no statistically significant difference in the safety indicators and incidence of adverse reactions between the two groups.ConclusionTreatment with Danlou tablets and the modified combination therapy based on Western medicine treatment could improve angina pectoris symptoms of patients with SAP and IPBS syndrome and its concurrent syndromes, and improve patients’ quality of life. Furthermore, the treatment is safe, has a long-term prognosis, and is worth further promotion and application in clinical practice.Clinical Trial Registrationhttps://www.chictr.org.cn/showprojEN.html?proj=235570, ChiCTR registry, ChiCTR1900023708.

Application of Endovenous Laser Treatment Combined with Foam Sclerotherapy for the Minimally Invasive Treatment of Great Saphenous Vein Varicosity

Objective: To evaluate the efficacy of endovenous laser treatment (EVLT) combined with foam sclerotherapy (FS) in the treatment of great saphenous vein varicosity (GSVV). Methods: A total of 50 patients with GSVV, treated between March 2021 and March 2024, were selected and randomly divided into two groups using a random number table. The combination group (25 cases) underwent EVLT combined with FS, while the conventional group (25 cases) underwent EVLT alone. The total effective rate, complication rate, disease severity score, and serological indicators were compared between the two groups. Results: The total effective rate in the combination group was higher, and the complication rate was lower compared to the conventional group (P &lt; 0.05). One week after surgery, the disease severity score in the combination group was lower, coagulation function indicators were better, and inflammatory factor levels were lower compared to the conventional group (P &lt; 0.05). Conclusion: EVLT combined with FS can improve the clinical efficacy in GSVV patients, prevent postoperative complications, reduce disease severity, protect patients’ coagulation function, and alleviate postoperative inflammatory responses, showing significant advantages in combined surgery.

Micropercutaneous nephrostomy for intervention in acute upper urinary tract calculi obstruction with hydronephrosis and infection

To compare the efficacy and advantages of mini percutaneous nephrostomy (MPCN), micropercutaneous nephrostomy (MicroPCN), and retrograde ureteric stenting (RUS) in the treatment of acute upper urinary tract calculi (UUTC) obstruction with hydronephrosis and infection, and verify the safety and indications of clinical application of micropercutaneous nephrostomy. Clinical-epidemiological data of patients with acute upper urinary tract calculi obstruction and infection treated in Ningbo No.2 hospital were retrospectively collected from May 2019 to May 2023. 64 patients (20 patients in MPCN group, 13 patients in MicroPCN group, and 31 patients in RUS group) were eligible for analysis based on inclusion and exclusion criteria. P value < 0.05 was considered statistically significant. There were no significant differences in peri-intervention temperature, multiple infection indicators and complications among the three groups. The nutritional status and peri-intervention coagulation function of patients in MicroPCN and RUS groups were poor, the CRP and proportion of using carbapenem advanced antibiotics were higher. The length of hospital stay and the length of hospital stay after the intervention in MPCN and MicroPCN groups were longer, the length and width of calculi were larger, and the degree of hydronephrosis was heavier. Patients in the MicroPCN group had the worst general condition, the lowest hemoglobin before intervention, the longest withdrawal time of vasoactive drugs. MPCN, MicroPCN, and RUS are safe and effective in relieving acute upper urinary tract calculi obstruction complicated with infection. MicroPCN has more advantages for patients with critical illness or complex obstruction urinary lithiasis.

Development of a predictive model for assessing the risk factors associated with recurrence following surgical treatment of chronic subdural hematoma.

Chronic subdural hematoma (CSDH) is a common disease in neurosurgery. Although many studies have investigated the factors affecting the recurrence of CSDH, no comprehensive prediction model has been established for the risk effect of postoperative recurrence of the disease. This study aims to collect and analyze the data of CSDH patients treated in our hospital to determine the influence of preoperative, postoperative and treatment factors on the recurrence of CSDH, and to establish a corresponding prediction model to provide neurosurgeons with more accurate basis for identifying high-risk patients and guiding treatment. A total of 431 patients were collected in this study, including 323 patients who underwent traditional hematoma removal and 108 patients who underwent endoscopic hematoma removal. Relevant preoperative and postoperative data and medical history of patients were collected respectively to study the relevant factors affecting postoperative hematoma recurrence of patients, and to establish a prediction model. A total of 431 patients were enrolled in this study, 71 of whom had subdural blood recurrence. Possible relevant factors were included in univariate logistic regression, and the results showed that the preoperative GCS score, postoperative residual gas, preoperative CT hematoma thickness, coagulation function, unilateral and bilateral surgery, whether statin was taken after surgery, hematoma site, hematoma density and hematoma volume were all P < 0.2. It is a risk factor for recurrence of chronic subdural hematoma. The obtained data were further included in a multi-factor review. Six factors, including preoperative GCS score, postoperative gas residual, abnormal coagulation function, high-density hematoma, large hematoma volume, and irregular statin use after surgery, were independent risk factors for chronic subdural hematoma recurrence (P < 0.05). This study confirmed that six factors, including preoperative GCS score, postoperative gas residual, abnormal coagulation function, high-density hematoma, large hematoma volume, and irregular statin use, were independent risk factors for recurrence of chronic subdural hematoma. At the same time, long-term use of statins can reduce the recurrence rate of hematoma to a certain extent. In addition, the predictive model in this study could help neurosurgeons accurately identify high-risk CSDH patients.

Efficacy of Laparoscopic Left Hemihepatectomy Combined With Choledochoscopic Lithotomy for Complex Intrahepatic Bile Duct Stones and Its Impact on Postoperative Liver Function.

This study was designed to investigate the clinical efficacy of laparoscopic left hemihepatectomy combined with choledochoscopic lithotomy for patients with complex intrahepatic bile duct stones. The clinical data of 97 patients with complex intrahepatic bile duct stones treated in our hospital between February 2019 and April 2022 were retrospectively collected. Patients were allocated into 2 groups based on their surgical approaches. In the control group, 46 patients underwent laparoscopic left hemihepatectomy, while in the combined group, 51 patients underwent laparoscopic left hemihepatectomy combined with choledochoscopic lithotomy. Parameters such as clinical efficacy, surgical indices, stress response markers (CRP, EP, COR), coagulation metrics (FIB, APTT, PT), liver function indicators (GGT, TBIL, ALT), complications, and quality of life were compared between the 2 groups. The combined group exhibited a significantly higher total effective rate compared with the control group (98.04% vs. 82.61%) (P<0.05). The operation duration of the combined group was longer than that of the control group. However, the duration for postoperative anal exhaustion, postoperative bed mobility, postoperative drainage, and hospital stay was shorter in the combined group than in the control group (P<0.05). CRP, EP, and COR concentrations were substantially elevated in both groups on the third postoperative day (P<0.05), but were lower in the combined group. Similarly, levels of FIB, APTT, and PT were markedly increased in both groups on the third postoperative day (P<0.05), but were lower in the combined group. On the seventh postoperative day, GGT, TBIL, and ALT were notably decreased in both groups, with the combined group exhibiting lower levels (P<0.05). The incidence of complications in the combined group was lower than that of the control group (5.88% vs. 19.57%) (P<0.05). At 3 months postoperatively, all GIQLI scores were markedly elevated in both groups, with superior scores observed in the combined group (P<0.05). The combined laparoscopy and choledochoscopy demonstrate a remarkable efficacy for complex intrahepatic bile duct stones, which significantly facilitate liver function recuperation, reduce stress reactions, reduce complications, enhance the quality of life, and exert a minimal impact on coagulation functions.

Device-Assisted Left Atrial Appendage Exclusion: From Basic Sciences to Clinical Applications.

Device-assisted left atrial appendage exclusion plays a crucial role in the prevention of fatal ischemic complications in patients with atrial fibrillation and contraindications to anticoagulation treatment. Various devices with different safety profiles and device-related complications are available in daily practice to perform this procedure. In this review, the anatomy, physiology, and functions of the left atrial appendage were detailed, and all available devices used for epicardial and endocardial exclusion of the left atrial appendage and their clinical outcomes were discussed. Future research should aim to further investigate the long-term effects of left atrial appendage exclusion on body homeostasis, blood coagulation, and cardiac function.

Preservation of coagulation function by normothermic machine perfusion in liver transplant as evidenced by thromboelastography parameters

The use of normothermic machine perfusion over static cold storage in liver transplantation has been shown to reduce post-transplant risks of early allograft dysfunction, primary nonfunction, and ischemic cholangiopathy, and its increasing use has played a role in the expanded utilization of marginal livers. While studies have demonstrated improved clinical outcomes utilizing normothermic machine perfusion over static cold storage preservation, real-time intraoperative data reflecting the quality and viability of normothermic machine perfusion livers is limited. This retrospective, single-center study compared normothermic machine perfusion vs static cold storage livers in first-time liver transplant recipients through the evaluation of synthetic coagulation function as measured by thromboelastography and conventional coagulation testing. Secondarily, transfusion utilization between the two cohorts were reviewed. 186 liver transplant recipients receiving allografts from donors after circulatory death were included in the study, of which 99 (53%) allografts were preserved in static cold storage, and 87 (47%) allografts were placed on the TransMedics Organ Care System. Study findings showed normothermic machine perfusion livers supported with the TransMedics Organ Care System were associated with increased synthetic coagulation function and less excess fibrinolysis in the post-reperfusion period compared to static cold storage livers, and that these findings were better reflected in real-time with thromboelastography monitoring vs conventional coagulation testing. Following reperfusion, there was a significant decrease in the transfusion of blood products in the normothermic machine perfusion group compared with that in the static cold storage group. Overall, we determined that the use of intraoperative thromboelastography can provide real-time data to assess one aspect of reperfusion liver quality and viability.

Neuropsychiatric symptoms following the consumption of Lanmaoa asiatica, a poisonous mushroom native to Yunnan

AbstractObjectivesTo describe and analyze the clinical characteristics and outcomes of Lanmaoa asiatica poisoning cases.MethodsWe conducted a retrospective study of Lanmaoa asiatica poisoning cases admitted to the emergency department of the First People's Hospital of Yunnan Province from January 2023 to December 2023.ResultsA total of 81 patients were admitted, with ages ranging from 14 to 84 years and a median age of 42.5 ± 14.6, predominantly female (72.8%). The peak poisoning cases were observed in July (n = 55, 67.9%). The commonest clinical presentation was the mixed neuropsychiatric and gastroenteritic type (64.2%), while 24.7% of patients presented with neuropsychiatric symptoms only and 11.1% of patients presented with pure gastroenteritic symptoms. The most common first symptom was visual hallucination (n = 56, 69.1%), followed by gastrointestinal symptoms such as nausea (n = 44, 54.3%) and vomiting (n = 36, 44.4%). Around 69.4% of patients had delayed onset of neuropsychiatric symptoms of 12–24 h after mushroom intake and 78.7% of patients had onset of gastroenteritic symptoms within 6 h after ingestion. Laboratory tests showed normal blood routine, liver function, kidney function, cardiac enzymes, and coagulation function. The median length of stay was 3 days, and no fatalities were reported.ConclusionsLanmaoa asiatica poisoning peaked in July. The commonest clinical presentation was the mixed neuropsychiatric and gastroenteritic type. The most common first symptom was visual hallucination. The incubation period for gastrointestinal symptoms was shorter than neuropsychiatric symptoms. Short hospitalization and absence of organ function damage was observed in Lanmaoa asiatica poisoning.

Toxicology profile of a novel GLP-1 receptor biased agonist-SAL0112 in nonhuman primates

Oral small-molecule GLP-1 receptor biased agonists exhibit promising treatment efficacy of type 2 diabetes and obesity. SAL0112 is a novel compound that has demonstrated remarkable efficacy in preclinical animal models. Herein, both in vitro and in vivo preclinical toxicity investigations were conducted to explore the safety profile of SAL0112. The HTRF assay and TR-FRET assay were utilized for cAMP detection. Patch clamp assay was employed for hERG potassium ion channel determination. Cynomolgus monkeys were used in a cardiovascular safety pharmacology study and a 13-week repeated dose toxicity study. The telemetry system was employed to detect cardiovascular indicators such as ECG, HR, and BP. During the repeated dose toxicity study, body weight, food intake, hematology, coagulation function test, serum biochemistry tests, and urine analysis were measured. Macroscopic and microscopic observations were conducted at the end of the study. TK studies were conducted on Day 1 and Day 91. SAL0112 exhibited a high degree of potency in activating the monkey GLP-1 receptor whereas had no effect on the rodent GLP-1 receptor. In contrast to Danuglipron, which demonstrated high potency on hERG with an IC50 value of 6.9 μM, the IC50 of SAL0112 on hERG was greater than 100 μM. Compared to the Vehicle Control group, no significant changes in cardiovascular indicators were observed in the cardiovascular safety pharmacology study after a single dose of SAL0112 up to 250 mg/kg (P > 0.05). A repeated dose toxicity study revealed moderate anorexigenic effects and a reduction in body weight, effects that were found to be reversible and not associated with any pathological changes. The NOAEL of SAL0112 is 150 mg/kg, providing an approximate safety margin of threefold. SAL0112 demonstrated a favorable safety profile in cynomolgus monkeys, with a substantial therapeutic window that supports the progression of this compound into clinical studies.

Diagnostic value of syndecan-1 for coronary artery lesions and correlation analysis of laboratory indicators in Kawasaki disease patients

BackgroundTo explore the application value of syndecan-1 (SDC-1) in the diagnosis of coronary artery lesions (CALs) in Kawasaki disease (KD) patients and the correlation of multiple laboratory indicators in KD patients.Methods86 pediatric Kawasaki disease (KD) patients and 52 healthy controls admitted from January 2018 to December 2023 were retrospectively analyzed. Venous blood samples from KD patients were analyzed for white blood cells (WBC), platelets (PLT), C-reactive protein (CRP), interleukin-6 (IL-6), syndecan-1 (SDC-1), coagulation parameters, and lipid profiles. Correlations between these laboratory indicators were assessed. Receiver operating characteristic (ROC) curve analysis determined the diagnostic value of SDC-1 for coronary artery lesions (CALs) in KD patients. SDC-1 levels were further compared across different CAL severity groups.ResultsThe levels of ALT, AST, WBC, PLT, CRP, IL-6, and SDC-1 in the KD group were significantly higher than those in the control group (P < 0.05). Coagulation function analysis showed that APTT, TT and FIB levels were significantly increased in the KD group compared with the control group (P < 0.05). Lipid profile analysis revealed that TC, HDL-C, and ApoA1 were significantly decreased, whereas TG, LDL-C, and ApoB100 were significantly increased in the KD group (P < 0.05). Refractory KD patients exhibited significantly higher levels of ALT, AST, SDC-1, CRP, WBC, and TG compared to responsive KD patients (P < 0.05). Correlation analysis indicated a strong positive correlation between PLT and LDL-C (r = 0.227, P = 0.035) and between IL-6 and TG (r = 0.491, P = 0.000), while CRP was negatively correlated with ApoA1 (r = -0.265, P = 0.014). Among the 86 KD patients, 41 (47.67%) developed CALs, with 19 classified as mild, 15 as moderate, and 7 as severe. For predicting CALs among KD patients, the threshold of SDC-1 was identified as 5.5 ng/ml, with a sensitivity of 70.7%, specificity of 64.4%, positive predictive value of 65.91%, negative predictive value of 69.05%, and an AUC of 0.762 (95% confidence interval 0.662–0.861, P < 0.001). SDC-1 levels significantly differed among the CAL severity groups (P = 0.008), with higher levels observed in moderate compared to mild CALs, and in severe compared to moderate CALs.ConclusionIn conclusion, SDC-1 has strong clinical value in the diagnosis of CALs in KD patients, and there is a close relationship between the levels of inflammatory factors, coagulation function and lipid levels in KD patients.