Immunotherapy is the only specific treatment for scorpion sting. In the present study, protective effects of polyvalent antivenom against hemodynamic disturbances, biomarkers (troponin T, creatinine kinase isoenzyme MB, Lactate dehydrogenase) changes, electrocardiogram abnormalities and histopathological complications in heart and lung induced by Mesobuthus eupeus scorpion venom was investigated in anesthetized rabbits. Twenty four rabbits were randomized into four equal groups: six rabbits in control group received 1 ml ultra-pure water subcutaneously (group 1). Group two received LD50 of venom (4.5 mg/kg). In the third and fourth groups, 5 ml of scorpion antivenom was administrated intravenously simultaneous with venom injection and 60 min following envenomation, respectively. Results of the present study indicate significant decrease in hemodynamic parameters following envenomation in the second group of animals. Venom injection caused edema, myocytolysis, coagulation necrosis, hemorrhage in heart as well as edema, hemorrhage and vascular thrombus in lungs. Although envenomed rabbits presented rises in LDH and TnT but no alteration in CK-MB was observed. Electrocardiogram monitoring of rabbits showed ST elevation and inverted T waves. Simultaneous administration of antivenom and venom prevented entirely the clinical signs, hemodynamic disturbances, markers changes, ECG abnormalities and histopathological damages. Delayed immunotherapy gradually ameliorated clinical signs, hemodynamic disturbances and markers changes related to envenomation. Histopathological evaluation showed slight alterations such as mild myocytolysis in heart and mild edema in lung following delayed immunotherapy. In conclusion, scorpion antivenom administration has preventive, neutralizing and curative properties for M. eupeus scorpion envenomation, if it would be applied at optimum time, dose and route.
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http://dx.doi.org/10.1016/j.toxicon.2011.11.004 | DOI Listing |
Background: Alzheimer's disease (AD) is a form of dementia that impairs memory, language, and daily functioning. With disease progression, AD patients reportedly experience disturbances in their awareness of self, others, and their environment. These disturbances are associated with unfavourable clinical outcomes, which prompts critical questions about how AD patients experience the world around them.
View Article and Find Full Text PDFBackground: White matter lesions (WMLs) are common with aging and are prevalent in AD, but the underlying physiology as well as associations with conventional vascular risk factors are not yet fully understood. In this study, we investigated the relationship between vascular risk factors and microvascular physiology (i.e.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
UK Dementia Research Institute, Care Research and Technology Centre, Imperial College London and the University of Surrey, Guildford, United Kingdom.
Background: Changes in sleep patterns are common in Alzheimer's disease and impact the quality of life of both people living with Alzheimer's (PLWA) and their caregivers. Longitudinal recordings and assessment of night-to-night variations in sleep and physiology can improve our understanding of how sleep influences clinical outcomes and caregiver wellbeing.
Method: We collected sleep diary and contactless sleep technology data (Withings sleep analyser, WSA) in community dwelling PLWA (N = 16, Age = 72.
J Formos Med Assoc
January 2025
Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Endoscopy Center for Diagnosis and Treatment, Taipei Veterans General Hospital, Taipei, Taiwan; Therapeutic and Research Center of Liver Cirrhosis and Portal Hypertension, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.
Background: Cirrhotic patients with refractory ascites exhibit severe portal hypertension and hemodynamic disturbances. The risks associated modest-volume paracentesis (<5 L) for refractory ascites remains unclear. We aimed to explore the impact of modest-volume paracentesis in refractory ascites.
View Article and Find Full Text PDFSensors (Basel)
December 2024
College of Electrical Engineering, Sichuan University, Chengdu 610065, China.
Remote photo-plethysmography (rPPG) is a useful camera-based health motioning method that can measure the heart rhythm from facial videos. Many well-established deep learning models can provide highly accurate and robust results in measuring heart rate (HR) and heart rate variability (HRV). However, these methods are unable to effectively eliminate illumination variation and motion artifact disturbances, and their substantial computational resource requirements significantly limit their applicability in real-world scenarios.
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