Snakebite Treatment in Tanzania: Identifying Gaps in Community Practices and Hospital Resources

Exploring the inhibitory potential of phytochemicals from Vernonia glaberrima leaves against snake venom toxins through computational simulation and experimental validation

Phospholipase A2 (PLA2) is an enzyme present in appreciable quantity in snake venoms which catalyze the hydrolysis of glycerophospholipids at sn-2 position and promote the release of lysophospholipids and fatty acids. 5-methylcoumarin-4-β-glucoside (5MC4BG) and lupeol were previously isolated from the leaves of V. glaberrima. The aim of this research was to evaluate effect of these compounds as potential inhibitors of snake venom toxins of Naja nigricollis using an in vitro and in silico studies. Antisnake venom studies was conducted using acidimetry while the molecular docking analysis against PLA2 enzyme from N. nigricollis was performed using Auto Dock Vina and ADME-Tox analysis was evaluated using swissADME and ProTox-II online servers. The two compounds (5MC4BG and Lupeol) were able to inhibit the hydrolytic actions of PLA2 enzyme with percentage inhibition ranging from 23.99 to 72.36 % and 21.97-24.82 % at 0.0625-1.00 mg/mL respectively while the standard ASV had 82.63 % at 1.00 mg/mL after 10 min incubation at 37 °C. Similar effects were observed after 30 min incubation, although there was significant increase in percentage inhibition of 5MC4BG and lupeol ranging from 66.51 to 83.73 % and 54.87-59.60 % at similar concentrations. Furthermore, the compounds were able to bind to the active site of PLA2 enzyme with high affinity (-7.7 to -6.3 kcal/mol); the standard ligand, Varespladib had a docking score of -6.9 kcal/mol and they exhibited favorable drug-likeness and pharmacokinetic properties and according to toxicity predictions, the two compounds are toxic. In conclusion, the leaf of V. glaberrima contains phytoconstituents with antisnake activity and thus, validates the hypothesis that, the phytoconstituents of V. glaberrima leaves has antisnake venom activity against N. nigricollis venom and thus, should be studied further for the development as antisnake venom agents.

Understanding pediatric snakebites: Clinical and epidemiological insights from a healthcare center in Bihar, India

Background

Snakebites are a common medical emergency and occupational hazard for children in India, particularly in rural areas where poverty is prevalent. However, there is limited data on the epidemiology of snakebites on the Indian subcontinent.

Objective

This cross-sectional, observational study aims to investigate the epidemiology, major clinical manifestations, and outcomes of snakebites in children under the age of 15 who were admitted to a tertiary care center in Bihar, a state in East India, and draw attention to this public health concern.

Methods

A cross-sectional observational study was conducted at the Department of Paediatrics, Patna Medical College and Hospital, Patna. The study included all cases of snakebites with features of envenomation involving patients less than 15 years of age who were brought to the department over a 2-year period. Data were collected using a data collection form and analyzed using the Statistical Package for the Social Sciences, version 11.0 (SPSS Inc., Chicago, IL, USA).

Results

A total of 59 cases were recorded, with 62.71% (n = 37) being male and 37.28% (n = 22) being female. Kraits were responsible for 38.9% (n = 23) of cases, vipers for 42.3% (n = 25), and cobras for 5% (n = 3). Fang marks were present in 67.7% (n = 40) of cases, and the majority of bites (84.7%, n = 50) occurred on a lower limb during the day. The age distribution showed that 16.9% (n = 10) were below 5 years old, 44% (n = 26) were between 5 and 10 years old, and 22% (n = 13) were above 10 years old. Traditional treatment was used in 44.7% (n = 22) of cases, with the most common treatments being local incision + tourniquet (22%, n = 13) and no traditional treatment (55.9%, n = 33). The highest number of cases occurred during July-September (35.5%, n = 21).

Conclusion

Snakebites are a significant public health issue in Bihar, India, with the majority of cases occurring in rural areas. The study highlights the importance of increased awareness and preparedness among healthcare providers and the general public, particularly during the monsoon season. Early hospital transfer, prehospital management, and prevention should be promoted through regular public health initiatives.

Impact of tourniquet use on severity of snakebite envenoming in Chongqing, China: a single-center retrospective study

OBJECTIVE

To identify risk factors associated with snakebite severity and determine whether tourniquet use can affect the severity and outcome of snakebites.

METHODS

The clinical data of patients who sustained limb snakebites from 1 March 2021 to 31 October 2022 were reviewed. The patients were divided into three groups according to snakebite severity: mild (517 cases), moderate (112 cases), and severe (8 cases). We compared the clinical data of mild versus moderate to severe snakebites. Multivariate logistic regression was used to determine the independent risk factors for moderate to severe snakebites.

RESULTS

The study involved 637 patients. There were statistically significant differences in age, tourniquet use, onset time, white blood cell increase, platelet decrease, creatine kinase (CK) increase, activated partial thromboplastin time shortening, and length of stay between patients with mild snakebites and those with moderate to severe snakebites. Multivariate logistic regression analysis showed that age, tourniquet use, and CK increase were independent risk factors for moderate to severe snakebites.

CONCLUSION

The overall severity of snakebites in Chongqing is mild, and the prognosis is good. Age, tourniquet use, and CK increase are independent risk factors for the severity of snakebites. We do not recommend tourniquet use after snakebites in Chongqing.

Current Status and Influencing Factors of Snakebite Diagnosis and Treatment Knowledge Among Medical Staff in China: A Cross-Sectional Study

Objectives: This study aimed to determine the current status of the knowledge of diagnosis and treatment of snakebites among medical staff in China and its influencing factors. Methods: A cross-sectional survey of 12,581 medical staff was conducted in 12 provinces in China between June 2022 and February 2023. We analyzed the results using descriptive statistics, T-tests or analysis of variance, and a generalized linear model. Results: The average score of snakebite diagnosis and treatment knowledge among medical staff in China was 3.15 ± 2.15 out of a total score of 12. Through a generalized linear regression model, we found that gender, occupation, region, hospital level, work department, work tenure, training received in the diagnosis and treatment of snakebite, experience in snakebite diagnosis and treatment, availability of antivenom in the unit, and self-evaluation of snakebite treatment ability all affected the medical staff's scores of snakebite diagnosis and treatment knowledge. Conclusion: The knowledge level of snakebite diagnosis and treatment among Chinese medical staff is generally low, so it is imperative to conduct standardized snakebite diagnosis and treatment training for medical staff.

Snakebite knowledge assessment and training of healthcare professionals in Asia, Africa, and the Middle East: A review

Snakebite envenoming (SBE) is a common neglected tropical disease in rural communities of Asia, Africa and Latin America. Among the several challenges besetting the control of SBE is inadequate access to high-quality care by snakebite victims, partly contributed by inadequate knowledge of SBE among healthcare professionals (HCPs). This narrative review examined the existing literature on the knowledge of snakebites among HCPs, the factors associated with their knowledge of snakebites and their training needs. Data on the knowledge of healthcare professionals regarding snakebites appeared scanty and were predominantly from studies done in Asia, Africa, and the Middle East. We found that the proportion of health workers with adequate knowledge of local medically important snakes could be as low as 20.2% in some settings in India, while as much as three-quarters of health workers still recommend tourniquets and Blackstone as first aid in some settings in India and Rwanda, respectively. In addition, the mean knowledge score of local snake-induced clinical syndromes could be as low as 46.2% in some settings in Ghana, while 52.7% of tertiary hospital doctors in northern Nigeria recommend antivenom in all snakebite cases. Similarly, 23% of Bhutan health workers have adequate overall knowledge of snakebite management. Furthermore, several sociodemographic characteristics of the HCPs (such as increasing age, years of experience, work setting, medical specialty, health profession and previous involvement in snakebite management) are associated with adequate snakebite knowledge. Moreover, most studies have consistently reported a lack of training on snakebites as a challenge. Therefore, the knowledge gaps identified could be incorporated into training programs and regional policies on SBE treatment protocols.