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https://www.readbyqxmd.com/read/28331489/reversible-atrial-fibrillation-following-crotalinae-envenomation
#1
Dan Quan, Kenneth Zurcher
BACKGROUND: Cardiotoxicity is a documented complication of Crotalinae envenomation. Reported cardiac complications following snake envenomation have included acute myocardial infarction, electrocardiogram abnormalities and arrhythmias. Few reports exist describing arrhythmia induced by viper envenomation and to our knowledge none describe arrhythmia induced by Crotalinae envenomation. This report concerns the first known case of atrial fibrillation precipitated by rattlesnake bite. CASE PRESENTATION: A 73-year-old Caucasian man with a past medical history of hypertension, hyperlipidemia, type 1 diabetes mellitus, and a baseline first-degree atrioventricular block presented to the emergency department following a rattlesnake bite to his left lower leg...
2017: Journal of Venomous Animals and Toxins Including Tropical Diseases
https://www.readbyqxmd.com/read/28323526/addiction-to-snake-venom
#2
Saibal Das, Preeti Barnwal, Tanay Maiti, Anand Ramasamy, Somnath Mondal, Dinesh Babu
The nature of addiction depends on various factors. The tendency to have already used several addictive substances and to seek high sensation experiences as a result of specific personality traits may lead to extreme and peculiar forms of addictions. Even belonging to specific social and cultural background may lead to such forms of addiction such as intentional snake bite and willful envenomation. In this article, we have discussed the peculiarities and practical insight of such addiction to snake venom. The possible molecular mechanism behind such venom-mediated reinforcement has also been highlighted...
March 21, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28306718/experimental-bothrops-atrox-envenomation-efficacy-of-antivenom-therapy-and-the-combination-of-bothrops-antivenom-with-dexamethasone
#3
Gabriella Neves Leal Santos Barreto, Sâmella Silva de Oliveira, Isabelle Valle Dos Anjos, Hipocrates de Menezes Chalkidis, Rosa Helena Veras Mourão, Ana Maria Moura da Silva, Ida Sigueko Sano-Martins, Luis Roberto de Camargo Gonçalves
Bothrops atrox snakes are the leading cause of snake bites in Northern Brazil. The venom of this snake is not included in the antigen pool used to obtain the Bothrops antivenom. There are discrepancies in reports on the effectiveness of this antivenom to treat victims bitten by B. atrox snakes. However, these studies were performed using a pre-incubation of the venom with the antivenom and, thus, did not simulate a true case of envenomation treatment. In addition, the local lesions induced by Bothrops venoms are not well resolved by antivenom therapy...
March 17, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28302413/characterization-of-daboia-russelii-and-naja-naja-venom-neutralizing-ability-of-an-undocumented-indigenous-medication-in-sri-lanka
#4
Madhushika M Silva, Sampath S Seneviratne, Devaka K Weerakoon, Charitha L Goonasekara
BACKGROUND: Indigenous medicinal practice in Sri Lanka talks about powerful compounds extracted from native plants for treating venomous snake bites which are hardly documented in literature but are used by the indigenous doctors for thousand years. OBJECTIVE: We screened the neutralizing ability of a herbal preparation practiced in indigenous medicine of Sri Lanka, consisting of Sansevieria cylindrica, Jatropha podagrica and Citrus aurantiifolia, for its ability to neutralize venom toxins of Naja naja (Common Cobra) and Daboia russelii (Russell's viper)...
March 13, 2017: Journal of Ayurveda and Integrative Medicine
https://www.readbyqxmd.com/read/28293253/can-anti-bothropstoxin-i-antibodies-discriminate-between-bothrops-jararaca-and-bothrops-jararacussu-venoms
#5
Ricardo Teixeira Araujo, Carlos Corrêa-Netto, Leonora Brazil-Más, Caio Raony Farina Silveira, Irene Fernandes, Russolina Benedeta Zingali
BACKGROUND: Snakes of the genus Bothrops, popularly known as pit vipers, are responsible for most cases of snakebite in Brazil. Within this genus, Bothrops jararacussu and B. jararaca deserve special attention due to the severity of their bites and for inhabiting densely populated areas. Regarding the treatment of snakebites by Bothrops jararacussu, questions have been raised about the effectiveness of the specific bothropic antivenom in neutralizing myotoxic effects; however, there are no accurate data for humans...
2017: Journal of Venomous Animals and Toxins Including Tropical Diseases
https://www.readbyqxmd.com/read/28289430/envenoming-by-viridovipera-stejnegeri-snake-a-patient-with-liver-cirrhosis-presenting-disruption-of-hemostatic-balance
#6
Chih-Ying Chien, Shu-Chen Liao, Chien-Hung Liao, Ting-Shuo Huang, Yu-Hsien Chen
BACKGROUND: In most cases of envenoming by the green habu Viridovipera stejnegeri in Taiwan coagulopathy is not observed. CASE PRESENTATION: Herein, we describe the case of a patient with liver cirrhosis who developed venom-induced consumptive coagulopathy after V. stejnegeri bite. Laboratory investigation revealed the following: prothrombin time > 100 s (international normalized ratio > 10), activated partial thromboplastin time > 100 s, fibrinogen < 50 mg/dL, and fibrin degradation product > 80 μg/mL...
2017: Journal of Venomous Animals and Toxins Including Tropical Diseases
https://www.readbyqxmd.com/read/28274896/functional-proteomic-analyses-of-bothrops-atrox-venom-reveals-phenotypes-associated-with-habitat-variation-in-the-amazon
#7
Leijiane F Sousa, José A Portes-Junior, Carolina A Nicolau, Juliana L Bernardoni, Milton Y Nishiyama-Jr, Diana R Amazonas, Luciana A Freitas-de-Sousa, Rosa Hv Mourão, Hipócrates M Chalkidis, Richard H Valente, Ana M Moura-da-Silva
Venom variability is commonly reported for venomous snakes including Bothrops atrox. Here, we compared the composition of venoms from B. atrox snakes collected at Amazonian conserved habitats (terra-firme upland forest and várzea) and human modified areas (pasture and degraded areas). Venom samples were submitted to shotgun proteomic analysis as a whole or compared after fractionation by reversed-phase chromatography. Whole venom proteomes revealed a similar composition among the venoms with predominance of SVMPs, CTLs, and SVSPs and intermediate amounts of PLA2s and LAAOs...
March 6, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28228775/envenomation-by-the-red-tailed-coral-snake-micrurus-mipartitus-in-colombia
#8
Carlos A Cañas, Fernando Castro-Herrera, Santiago Castaño-Valencia
BACKGROUND: Although the red-tailed coral snake (Micrurus mipartitus) is widely distributed in Colombia and its venom is highly neurotoxic and life threatening, envenomation by this species is rare. Therefore, this report may shed some light on the clinical presentation of M. mipartitus bites. CASE PRESENTATIONS: Herein, we describe two cases of patients bitten by red-tailed coral snakes, illustrating the clinical presentation of the victims, the outcomes and treatment provided...
2017: Journal of Venomous Animals and Toxins Including Tropical Diseases
https://www.readbyqxmd.com/read/28216410/coagulopathy-and-extensive-local-swelling-following-green-pit-viper-trimeresurus-trigonocephalus-envenoming-in-sri-lanka
#9
R M M K Namal Rathnayaka, S A M Kularatne, P E A N Ranathunga
Trimeresurus trigonocephalus (Sri Lankan Green pit viper) is a moderately venomous arboreal snake endemic to Sri Lanka. Even though, its bites are not uncommon, published reports of such cases are limited to three in literature. We report three cases of coagulopathy following Green pit viper bites and treatment with fresh frozen plasma.
February 16, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28178774/a-retrospective-review-of-rattlesnake-bites-in-100-children
#10
Norberto Sotelo-Cruz, Norberto Gómez-Rivera
BACKGROUND: A retrospective review of clinical features and treatment of children hospitalized for rattlesnake bite. METHODS: One hundred clinical records were reviewed. Variables included: age, gender, season of the year, signs, symptoms, poisoning grade, complications, treatment and sequelae. RESULTS: Fifty-nine percent were males and 37% were less than 5 years of age; 87% occurred in rural areas; 63% of the snakebites occurred during the summer, of them, 39% occurred within the perimeter of the domicile and 8% within the home...
April 2017: Minerva Pediatrica
https://www.readbyqxmd.com/read/28167587/snake-bite-induced-acute-kidney-injury-report-of-a-successful-outcome-during-pregnancy
#11
Sanjay Vikrant, Anupam Parashar
Snake bite is an important health hazard in tropics. Snake envenomation in pregnancy may cause fetal death and maternal mortality or morbidity. However, little is known about the toxic effects and optimal management during pregnancy after snake envenomation because of the rarity of cases. Herein, we report a case of a pregnant woman who was successfully treated for snake bite-induced acute kidney injury during the third trimester. She was treated with equine-derived polyvalent anti-snake venom without development of any adverse effects, hemodialysis, and supportive therapy...
February 6, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28150853/performance-of-the-20-minute-whole-blood-clotting-test-in-detecting-venom-induced-consumption-coagulopathy-from-russell-s-viper-daboia-russelii-bites
#12
Indira Ratnayake, Fathima Shihana, Dhammika M Dissanayake, Nicholas A Buckley, Kalana Maduwage, Geoffrey K Isbister
The 20-minute whole blood clotting test (WBCT20) is used as a bedside diagnostic test for coagulopathic snake envenoming. We aimed to assess the performance of the WBCT20 in diagnosis of venom induced consumption coagulopathy (VICC) in Russell's viper envenoming. Adult patients admitted with suspected snake bites were recruited from two hospitals. WBCT20 and prothrombin time (PT) test were performed on admission. WBCT20 was done by trained clinical research assistants using 1 ml whole blood in a 5 ml borosilicate glass tube with a 10 mm internal diameter...
February 28, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28138054/bites-by-the-monocled-cobra-naja-kaouthia-in-chittagong-division-bangladesh-epidemiology-clinical-features-of-envenoming-and-management-of-70-identified-cases
#13
M A Faiz, M F Ahsan, A Ghose, M R Rahman, R Amin, M Hossain, M N Tareq, M A Jalil, U Kuch, R D G Theakston, D A Warrell, J B Harris
We describe 70 cases of monocled cobra (Naja kaouthia) bite admitted to Chittagong Medical College Hospital, Bangladesh. The biting snakes were identified by examining the dead snake and/or detecting N. kaouthia venom antigens in patients' serum. Bites were most common in the early morning and evening during the monsoon (May-July). Ligatures were routinely applied to the bitten limb before admission. Thirty-seven patients consulted traditional healers, most of whom made incisions around the bite site. Fifty-eight patients experienced severe neurotoxicity and most suffered swelling and pain of the bitten limb...
January 30, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28103732/evaluation-of-antivenom-therapy-for-vipera-palaestinae-bites-in-children-experience-of-two-large-tertiary-care-pediatric-hospitals
#14
Dikla Pivko-Levy, Itamar Munchnak, Ayelet Rimon, Uri Balla, Dennis Scolnik, Christopher Hoyte, Yair Voliovitch, Miguel Glatstein
BACKGROUND: Antivenom has been successfully used to treat systemic and progressive, local manifestations of envenomation inflicted by Vipera (V.) palaestinae, the most common venomous snake in Israel. The objective of this study was to evaluate the fixed dose V. palaestinae monovalent (equine) immunoglobulin G antivenom used in two pediatric emergency departments. In particular, we wanted to assess the need for repeated antivenom administration and the rate of adverse antivenom effects in children...
April 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28062164/two-rare-case-reports-of-confirmed-ceylon-krait-bungarus-ceylonicus-envenoming-in-sri-lanka
#15
R M M K Namal Rathnayaka, S A M Kularatne, K D M Kumarasinghe, K Jeganadan, P E A N Ranathunga
The Ceylon krait (Bungarus ceylonicus) is a deadly venomous elapid snake endemic to Sri Lanka. Its habitat is mainly in the wet zone of the island. Despite its frequent encounters in and near human dwellings, reports of envenoming are rare and limited to four in the literature. The first and last fatal reports envenoming by B. ceylonicus was in 1993. After over two decades, we report two confirmed cases of B. ceylonicus bites-one a dry bite and the other with signs and symptoms of moderate envenoming. The envenoming occurred at night while the victim was asleep, causing tightness in the chest and dyspnoea on waking up, followed by neuromuscular paralysis that did not cause respiratory failure and complete recovery was observed three days following the bite...
January 4, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28042812/snake-venom-metalloproteinases-and-their-peptide-inhibitors-from-myanmar-russell-s-viper-venom
#16
Khin Than Yee, Morgan Pitts, Pumipat Tongyoo, Ponlapat Rojnuckarin, Mark C Wilkinson
Russell's viper bites are potentially fatal from severe bleeding, renal failure and capillary leakage. Snake venom metalloproteinases (SVMPs) are attributed to these effects. In addition to specific antivenom therapy, endogenous inhibitors from snakes are of interest in studies of new treatment modalities for neutralization of the effect of toxins. Two major snake venom metalloproteinases (SVMPs): RVV-X and Daborhagin were purified from Myanmar Russell's viper venom using a new purification strategy. Using the Next Generation Sequencing (NGS) approach to explore the Myanmar RV venom gland transcriptome, mRNAs of novel tripeptide SVMP inhibitors (SVMPIs) were discovered...
December 30, 2016: Toxins
https://www.readbyqxmd.com/read/27940763/childhood-victims-of-snakebites-2000-2013
#17
Joann Schulte, Kristina Domanski, Eric Anthony Smith, Annelle Menendez, Kurt C Kleinschmidt, Brett A Roth
BACKGROUND: Snakebites are not a reportable condition (to state health departments), and 1 major assessment of US children with snakebites was published 50 years ago. Increasing urbanization, population shifts south and west, newer antivenom therapy, and the importation of exotic snakes may have changed snakebites. Poison control centers are often consulted on treatment and collect surveillance data. METHODS: Generic codes for venomous, nonvenomous, and unknown snakebites were used to characterize victims aged ≤18 years reported to US poison control centers between 2000 and 2013...
November 2016: Pediatrics
https://www.readbyqxmd.com/read/27936776/unraveling-the-proteome-composition-and-immuno-profiling-of-western-india-russell-s-viper-venom-for-in-depth-understanding-of-its-pharmacological-properties-clinical-manifestations-and-effective-antivenom-treatment
#18
Bhargab Kalita, Aparup Patra, Ashis K Mukherjee
The proteome composition of western India (WI) Russell's viper venom (RVV) was correlated with pharmacological properties and pathological manifestations of RV envenomation. Proteins in the 5-19 and 100-110 kDa mass ranges were the most predominate (∼35.1%) and least abundant (∼3.4%) components, respectively, of WI RVV. Non-reduced SDS-PAGE indicated the occurrence of multiple subunits, non-covalent oligomers, self-aggregation, and/or interactions among the RVV proteins. A total of 55 proteins belonging to 13 distinct snake venom families were unambiguously identified by ESI-LC-MS/MS analysis...
December 12, 2016: Journal of Proteome Research
https://www.readbyqxmd.com/read/27904261/the-north-south-divide-in-snake-bite-envenomation-in-india
#19
REVIEW
Vivek Chauhan, Suman Thakur
Snake bite envenomations are common in rural areas and the incidence peaks during monsoons in India. Prominent venomous species have been traditionally labeled as the 'big four' that includes Cobra, Krait, Russel's viper and Saw scaled viper. Systematic attempts for identification and classification of prevalent snakes in various states of India are missing till now and there is no concrete data on this aspect. The published literature however shows that some species of snakes are more prevalent in a particular region than the other parts of India e...
October 2016: Journal of Emergencies, Trauma, and Shock
https://www.readbyqxmd.com/read/27903075/australian-taipan-oxyuranus-spp-envenoming-clinical-effects-and-potential-benefits-of-early-antivenom-therapy-australian-snakebite-project-asp-25
#20
Christopher I Johnston, Nicole M Ryan, Margaret A O'Leary, Simon G A Brown, Geoffrey K Isbister
CONTEXT: Taipans (Oxyuranus spp.) are medically important venomous snakes from Australia and Papua New Guinea. The objective of this study was to describe taipan envenoming in Australian and its response to antivenom. METHODS: Confirmed taipan bites were recruited from the Australian Snakebite Project. Data were collected prospectively on all snakebites, including patient demographics, bite circumstances, clinical effects, laboratory results, complications and treatment...
February 2017: Clinical Toxicology
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