958 results match your criteria: "Snake Envenomation Cobra"

Background Snakebite envenomation remains a significant public health challenge in tropical countries, particularly affecting the pediatric population. Children are especially vulnerable because of their smaller body mass, outdoor activities, and delayed presentation to healthcare facilities. This study aimed to analyze the clinical profile, demographic patterns, and envenomation characteristics of snakebites in children aged 1-16 years presenting to a tertiary care center.

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The neurotoxic effect of Naja nubiae (Serpentes: Elapidae) venom from Sudan.

Trans R Soc Trop Med Hyg

November 2024

Department of Immunology, Institute of Endemic Diseases, University of Khartoum, P.O. Box 11463, Khartoum, Sudan.

Background: Neurotoxicity is a common feature of elapid snake envenomation. There are limited studies on the toxicity of Naja nubiae venom, the Nubian spitting cobra, from north-east Africa.

Methods: We used the chick biventer cervicis nerve-muscle preparation to demonstrate the neurotoxic effect of N.

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Proteomic Profiling of Venoms from and : Enzymatic Activities and Toxicity Assessment.

Toxins (Basel)

November 2024

Animal Toxin Group, Engineering Research Center of Active Substance and Biotechnology, Ministry of Education, College of Life Science, Chongqing Normal University, Chongqing 401331, China.

Article Synopsis
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Snakebite is a major public health concern in many parts of the world, including India, where over 58,000 deaths occur annually due to snake envenoming. The common krait () is responsible for the second-highest number of snakebite-related mortalities in the country. However, despite its notoriety, little is known about its venom ecology, functions and compositional variation across bioclimatic zones, partly because these nocturnal snakes are highly elusive, making it difficult to find them in the wild.

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A 68-year-old woman, after an Indian cobra (Naja naja) bite, developed anaphylaxis, Takotsubo cardiomyopathy, and Kounis syndrome. She was initially diagnosed with acute coronary syndrome after anaphylaxis due to exposure to cobra venom, indicating Kounis syndrome. The echocardiogram, electrocardiogram, and almost complete reversal of dyskinetic myocardium established Takotsubo cardiomyopathy.

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Background: Snakebite envenomation remains a significant public health concern in Asir Province of Saudi Arabia.

Aim: To characterize snake species and the clinical presentation, outcome and management of snakebite cases admitted to 4 major hospitals in Asir Province, Saudi Arabia .

Methods: This retrospective study reviewed medical records of paediatric and adult snakebite cases admitted to 4 regional hospitals in Saudi Arabia between January 2000 and December 2021 using search terms "snakebite", "cobra", "polyvalent antivenin", "antivenom", "compartment syndrome", and "fasciotomy".

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Snake venom weakens neurovascular integrity and promotes vulnerability to neuroinflammation.

Int Immunopharmacol

December 2024

Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Xueyuan Ave 1068, Nanshan, Shenzhen 518055, Guangdong, China. Electronic address:

Snake envenomation poses significant medical challenges, particularly in subtropical and tropical regions, with long-term impacts on neurovascular integrity and neuroinflammation remaining underexplored. This study investigates the effects of venom from four species of venomous snakes in southern China-Zhoushan Cobra (Naja atra, NA), Many-banded Krait (Bungarus multicinctus, BM), Five-paced Pit Viper (Deinagkistrodon acutus, DA), and Chinese Moccasin (Protobothrops mucrosquamatus, PM) - on the blood-brain barrier (BBB) and chronic neuroinflammation. Using mass spectrometry, we analyzed venom protein compositions, while cytotoxic effects on mouse brain endothelial cells (bEND.

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Envenomings from Russell's viper typically result in local tissue damage and bleeding complications, but the bites from common krait and cobra primarily cause neurotoxic effects. While most symptoms can be treated with appropriate antivenom, additional support is necessary for several snakebite victims to tackle a broad range of unusual complications that they develop following bites. Reversible vasoconstriction syndrome (RCVS), characterised by the constriction of cerebral arteries, is a rare but serious issue, presenting with severe headaches and, in extreme cases, haemorrhagic/ischaemic stroke.

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Production of an Efficient Enzymatically Fab Fragment Antivenom against Cobra Snake () Venom.

Arch Razi Inst

April 2024

Razi Vaccine and Serum Research Institute, Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran.

Since around 100 years ago, the best treatment for millions of global snakebite victims has been polyclonal antivenoms. However, common antivenoms need continuous improvement to reduce rare, their side effects and get better performance. In the present study, Fab antivenom was produced through papain digestion of anti-cobra venom plasma, multi-step purification, and optimization, including ammonium sulfate precipitation and DEAE-cellulose column chromatography.

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Article Synopsis
  • * Producing oligoclonal antibodies in a single batch is more cost-effective than making multiple individual monoclonal antibody batches, making the manufacturing process more efficient.
  • * The study successfully created a stable oligoclonal antibody mixture targeting toxins from various elapid snake venoms, demonstrating a viable strategy for producing tailored antivenoms for snakebites and potentially other medical applications.
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Article Synopsis
  • - This study investigates North American coral snake envenomations using data from the National Poison Data System over a 17-year period (2006-2022), focusing on epidemiological trends and clinical outcomes associated with bites.
  • - A total of 1,374 cases were analyzed, with the majority of bites occurring in adults from Florida and Texas, and no reported fatalities; about 30% of cases resulted in moderate to major clinical outcomes, with symptoms including pain, dermal irritation, and edema.
  • - Male patients made up a significant portion of the cases (75% for both pediatric and adult categories), and antivenom was administered in 21% of cases, with 37% requiring critical care. *
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Neutralizing Nanobodies against Venoms from Species Captured in North Africa.

Toxins (Basel)

September 2024

Laboratory of Venoms and Theranostic Applications (LR20IPT01), Place Pasteur, BP704, Pasteur Institute of Tunis, Université Tunis el Manar, Tunis 1002, Tunisia.

Article Synopsis
  • Snakebite envenoming (SBE) is a major public health problem in tropical areas, especially Africa, where it causes a high number of fatalities and serious health issues due to ineffective antivenom treatments.
  • This study focuses on developing nanobodies as a new type of treatment against cobra venoms, investigating toxic venom fractions and their interaction with acetylcholine receptors.
  • The research identified two particularly deadly venom fractions, F5 and F6, and demonstrated that combining specific nanobodies could neutralize these venoms effectively in mice, revealing the complex nature of cobra venom's lethal effects.
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Article Synopsis
  • Sudan faces a significant issue with snakebites, especially among farm workers, yet lacks comprehensive statistics and understanding of the problem due to inadequate data.
  • A survey of 394 healthcare providers revealed that while 58.1% had sufficient knowledge about snakes, only 45.3% understood snakebites, with only 25.9% having received relevant training.
  • The findings indicate a critical need for improved educational programs and protocols to better equip healthcare providers in managing snakebites effectively in affected regions of Sudan.
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Article Synopsis
  • Colubrids are a large group of snakes, with over 300 genera, previously thought to be harmless, making up about two-thirds of all snake species.
  • An 18-year-old male was bitten by Erythrolamprus bizona, a snake he mistakenly identified as a harmless species, resulting in localized swelling and pain, which later spread to his hand, with laboratory tests showing an increase in white blood cells and muscle enzymes.
  • This incident emphasizes the need for accurate identification of snakes, especially those that resemble harmless species, and raises awareness about the potential dangers of bites from snakes historically considered low-risk.
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Snake envenomation poses a significant risk to Malaysians and country visitors. Malaysia witnesses an estimated 650 snake bites per 100,000 population annually. The primary treatment for snake envenomation involves administering antivenom derived from horses, despite its drawbacks, such as anaphylactic reactions and serum sickness.

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Article Synopsis
  • Naja species bites are a leading cause of consultations for snake envenomation in Malaysia, often resulting in severe neuroparalytic and cardiotoxic effects.
  • A reported case highlighted a 14-year-old boy who experienced cardiotoxicity, evident through an abnormal ECG, following a bite from the equatorial spitting cobra, Naja sumatrana, before showing signs of paralysis.
  • Timely administration of antivenom led to the resolution of symptoms, emphasizing the importance of monitoring for cardiotoxicity in envenomation cases to ensure quick treatment.
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Exploring Top-Down Mass Spectrometric Approaches To Probe Forest Cobra () Venom Proteoforms.

J Proteome Res

October 2024

Discipline of Chemistry, School of Physics, Chemistry and Earth Sciences, The University of Adelaide, Adelaide, SA 5005, Australia.

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Composition, pharmacology, and pathophysiology of the venom of monocled cobra (Naja kaouthia)- a medically crucial venomous snake of southeast Asia: An updated review.

Toxicon

October 2024

Department of Molecular Biology and Biotechnology, School of Sciences, Tezpur University, Tezpur- 784028, Assam, India; Institute of Advanced Studies in Science and Technology, Vigyan Path Garchuk, Paschim Boragaon, Guwahati-781035, Assam, India. Electronic address:

The Monocled Cobra (Naja kaouthia), a category one medically significant snake from the Elapidae family, inflicts severe envenomation in South and Southeast Asian countries. N. kaouthia is distributed throughout the eastern and northeastern parts of India, Nepal, Bangladesh, Myanmar, Thailand, Vietnam, Malaysia, and southwestern China.

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Development and characterization of nanobody against envenomation by Naja naja oxiana.

Toxicon

October 2024

Venom and Biotherapeutics Molecules Laboratory, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran. Electronic address:

Snakebites are considered a significant health issue. Current antivenoms contain polyclonal antibodies, which vary in their specificity against different venom components. Development and characterization of next generation antivenoms including nanobodies against Naja naja oxiana was the main aim of this study.

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Background: Snake venoms can exhibit remarkable inter- and intraspecific variation. While diverse ecological and environmental factors are theorised to explain this variation, only a handful of studies have attempted to unravel their precise roles. This knowledge gap not only impedes our understanding of venom evolution but may also have dire consequences on snakebite treatment.

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Article Synopsis
  • - Snakebite envenomation is a major but often overlooked public health issue in tropical and subtropical regions, with particular challenges in medical infrastructure and record-keeping, especially concerning the King Cobra in Malaysia.
  • - A study from 2015 to 2020 analyzed 32 cases of King Cobra bites, primarily occurring in Peninsular Malaysia, where most victims attempted to catch or interact with the snake, leading to significant symptoms like ptosis and requiring advanced medical interventions.
  • - Most patients received antivenom treatment, primarily the monospecific King Cobra antivenom, but the study noted one death due to severe complications, highlighting the need for better public awareness and timely treatment to improve outcomes.
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Molecular dissection of cobra venom highlights heparinoids as an antidote for spitting cobra envenoming.

Sci Transl Med

July 2024

Charles Perkins Centre, Dr. John and Anne Chong Lab for Functional Genomics, and School of Life and Environmental Sciences, University of Sydney, Camperdown, NSW 2006, Australia.

Snakebites affect about 1.8 million people annually. The current standard of care involves antibody-based antivenoms, which can be difficult to access and are generally not effective against local tissue injury, the primary cause of morbidity.

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