ABSTRACT
Resveratrol, a natural polyphenol found in tempeh, has not been investigated especially in vitro as a neuroprotective agent against 2-methoxyethanol (2-ME)-induced beta-amyloid cytotoxicity. Beta amyloid peptides (Aß) could initiate neurotoxic events and neuron-inflammatory response via microglial activation. However, it remains unknown whether the neurotoxic effect of beta-amyloid and/or associated with the potential of 2-ME to induce neurotoxic effects on primary culture of nerve cells induced by 2-ME. This study investigated potential neuroprotective of trans-resveratrol a promising agent tempeh and soybean seed coats-derived against betaamyloid cytotoxicity on primary culture of nerve cells induced by 2-methoxyethanol. Biotium and MTT assays were used to analyze neurons, which were isolated from the cerebral cortex of fetal mice at gestation day 19 (GD-19). A standard solution of 2-methoxyethanol was dosed at 10 µL. The cultured cells were randomly divided into the following groups: (1) 2-ME group + resveratrol standard, (2) 2-ME group + resveratrol isolated from tempeh, (3) 2-ME group + resveratrol isolated from soybean seed coats, and (4) the control group, without the addition of either 2-ME or resveratrol. Exposure of the primary cortical neuron cells to beta-amyloid monoclonal antibody pre-incubated for 24 h with 10 µL of 4.2 µg/mL resveratrol and 7.5 mmol/l 2-methoxy-ethanol additions. Here, we report that the addition of 2-ME and resveratrol (standard and isolated from tempeh) of cell culture at concentrations of 1.4, 2.8 and 4.2 µg/mL showed that the majority of neurons grew well. In contrast, after exposure to 2-ME and Beta-amyloid, showed that glial activated. These findings demonstrate a role for resveratrol in neuroprotective-neurorescuing action.
O resveratrol, um polifenol natural encontrado em tempê, não foi investigado apenas in vitro como agente neuroprotetor contra a citotoxicidade beta-amiloide induzida por 2-metoxietanol (2-ME). Os peptídeos betaamiloides (Aß) podem iniciar eventos neurotóxicos e resposta inflamatória dos neurônios via ativação microglial. No entanto, permanece desconhecido se o efeito neurotóxico do peptídeo beta-amiloide associado ao potencial do 2-ME causa efeitos neurotóxicos na cultura primária de células nervosas induzidas pelo 2-ME. Este estudo investigou o potencial neuroprotetor do agente trans-resveratrol em cascas de sementes de soja e tempê derivadas da citotoxicidade beta-amiloide na cultura primária de células nervosas induzidas pelo 2-metoxietanol. Ensaios de biotium e MTT foram utilizados para analisar os neurônios isolados do córtex cerebral de camundongos fetais no dia da gestação 19 (GD-19). As células cultivadas foram divididas aleatoriamente nos seguintes grupos: (1) grupo 2-ME + padrão de resveratrol; (2) grupo 2-ME + resveratrol isolado de tempê; (3) grupo 2-ME + resveratrol isolado de cascas de sementes de soja; e (4) grupo controle, sem a adição de 2-ME ou resveratrol. Houve exposição das células primárias dos neurônios corticais ao anticorpo monoclonal beta-amiloide pré-incubado por 24 horas, com 10 µL de 4,2 µg/mL de resveratrol, e adições de 7,5 mmol/l de 2-metoxietanol. A adição de 2-ME e resveratrol (padrão e isolado do tempê) da cultura de células nas concentrações de 1,4, 2,8 e 4,2 µg/mL mostrou que a maioria dos neurônios cresceu bem. Por outro lado, após a exposição ao 2-ME e beta-amiloide, a glia foi ativada. Esses achados demonstram um papel do resveratrol na ação neuroprotetora e de neurorresgate.
Subject(s)
Animals , Rabbits , Stilbenes/pharmacology , Soy Foods , Soybeans , Amyloid beta-Peptides/toxicity , Ethylene Glycols , Resveratrol , NeuronsABSTRACT
Resveratrol, a natural polyphenol found in tempeh, has not been investigated especially in vitro as a neuroprotective agent against 2-methoxyethanol (2-ME)-induced beta-amyloid cytotoxicity. Beta amyloid peptides (Aβ) could initiate neurotoxic events and neuron-inflammatory response via microglial activation. However, it remains unknown whether the neurotoxic effect of beta-amyloid and/or associated with the potential of 2-ME to induce neurotoxic effects on primary culture of nerve cells induced by 2-ME. This study investigated potential neuroprotective of trans-resveratrol a promising agent tempeh and soybean seed coats-derived against beta amyloid cytotoxicity on primary culture of nerve cells induced by 2-methoxyethanol. Biotium and MTT assays were used to analyze neurons, which were isolated from the cerebral cortex of fetal mice at gestation day 19 (GD-19). A standard solution of 2-methoxyethanol was dosed at 10 μL. The cultured cells were randomly divided into the following groups: (1) 2-ME group + resveratrol standard, (2) 2-ME group + resveratrol isolated from tempeh, (3) 2-ME group + resveratrol isolated from soybean seed coats, and (4) the control group, without the addition of either 2-ME or resveratrol. Exposure of the primary cortical neuron cells to beta-amyloid monoclonal antibody pre-incubated for 24 h with 10 µL of 4.2 µg/mL resveratrol and 7.5 mmol/l 2-methoxy-ethanol additions. Here, we report that the addition of 2-ME and resveratrol (standard and isolated from tempeh) of cell culture at concentrations of 1.4, 2.8 and 4.2 µg/mL showed that the majority of neurons grew well. In contrast, after exposure to 2-ME and Beta-amyloid, showed that glial activated. These findings demonstrate a role for resveratrol in neuroprotective-neurorescuing action.
O resveratrol, um polifenol natural encontrado em tempê, não foi investigado apenas in vitro como agente neuroprotetor contra a citotoxicidade beta-amiloide induzida por 2-metoxietanol (2-ME). Os peptídeos beta amiloides (Aβ) podem iniciar eventos neurotóxicos e resposta inflamatória dos neurônios via ativação microglial. No entanto, permanece desconhecido se o efeito neurotóxico do peptídeo beta-amiloide associado ao potencial do 2-ME causa efeitos neurotóxicos na cultura primária de células nervosas induzidas pelo 2-ME. Este estudo investigou o potencial neuroprotetor do agente trans-resveratrol em cascas de sementes de soja e tempê derivadas da citotoxicidade beta-amiloide na cultura primária de células nervosas induzidas pelo 2-metoxietanol. Ensaios de biotium e MTT foram utilizados para analisar os neurônios isolados do córtex cerebral de camundongos fetais no dia da gestação 19 (GD-19). As células cultivadas foram divididas aleatoriamente nos seguintes grupos: (1) grupo 2-ME + padrão de resveratrol; (2) grupo 2-ME + resveratrol isolado de tempê; (3) grupo 2-ME + resveratrol isolado de cascas de sementes de soja; e (4) grupo controle, sem a adição de 2-ME ou resveratrol. Houve exposição das células primárias dos neurônios corticais ao anticorpo monoclonal beta-amiloide pré-incubado por 24 horas, com 10 µL de 4,2 µg/mL de resveratrol, e adições de 7,5 mmol/l de 2-metoxietanol. A adição de 2-ME e resveratrol (padrão e isolado do tempê) da cultura de células nas concentrações de 1,4, 2,8 e 4,2 µg/mL mostrou que a maioria dos neurônios cresceu bem. Por outro lado, após a exposição ao 2-ME e beta-amiloide, a glia foi ativada. Esses achados demonstram um papel do resveratrol na ação neuroprotetora e de neurorresgate.
Subject(s)
Neuroprotective Agents/analysis , Polyphenols/adverse effects , Polyphenols/toxicity , Resveratrol/adverse effects , Resveratrol/therapeutic use , Seeds , SoybeansABSTRACT
Abstract Resveratrol, a natural polyphenol found in tempeh, has not been investigated especially in vitro as a neuroprotective agent against 2-methoxyethanol (2-ME)-induced beta-amyloid cytotoxicity. Beta amyloid peptides (A) could initiate neurotoxic events and neuron-inflammatory response via microglial activation. However, it remains unknown whether the neurotoxic effect of beta-amyloid and/or associated with the potential of 2-ME to induce neurotoxic effects on primary culture of nerve cells induced by 2-ME. This study investigated potential neuroprotective of trans-resveratrol a promising agent tempeh and soybean seed coats-derived against beta-amyloid cytotoxicity on primary culture of nerve cells induced by 2-methoxyethanol. Biotium and MTT assays were used to analyze neurons, which were isolated from the cerebral cortex of fetal mice at gestation day 19 (GD-19). A standard solution of 2-methoxyethanol was dosed at 10 L. The cultured cells were randomly divided into the following groups: (1) 2-ME group + resveratrol standard, (2) 2-ME group + resveratrol isolated from tempeh, (3) 2-ME group + resveratrol isolated from soybean seed coats, and (4) the control group, without the addition of either 2-ME or resveratrol. Exposure of the primary cortical neuron cells to beta-amyloid monoclonal antibody pre-incubated for 24 h with 10 µL of 4.2 µg/mL resveratrol and 7.5 mmol/l 2-methoxy-ethanol additions. Here, we report that the addition of 2-ME and resveratrol (standard and isolated from tempeh) of cell culture at concentrations of 1.4, 2.8 and 4.2 µg/mL showed that the majority of neurons grew well. In contrast, after exposure to 2-ME and Beta-amyloid, showed that glial activated. These findings demonstrate a role for resveratrol in neuroprotective-neurorescuing action.
Resumo O resveratrol, um polifenol natural encontrado em tempê, não foi investigado apenas in vitro como agente neuroprotetor contra a citotoxicidade beta-amiloide induzida por 2-metoxietanol (2-ME). Os peptídeos beta-amiloides (A) podem iniciar eventos neurotóxicos e resposta inflamatória dos neurônios via ativação microglial. No entanto, permanece desconhecido se o efeito neurotóxico do peptídeo beta-amiloide associado ao potencial do 2-ME causa efeitos neurotóxicos na cultura primária de células nervosas induzidas pelo 2-ME. Este estudo investigou o potencial neuroprotetor do agente trans-resveratrol em cascas de sementes de soja e tempê derivadas da citotoxicidade beta-amiloide na cultura primária de células nervosas induzidas pelo 2-metoxietanol. Ensaios de biotium e MTT foram utilizados para analisar os neurônios isolados do córtex cerebral de camundongos fetais no dia da gestação 19 (GD-19). As células cultivadas foram divididas aleatoriamente nos seguintes grupos: (1) grupo 2-ME + padrão de resveratrol; (2) grupo 2-ME + resveratrol isolado de tempê; (3) grupo 2-ME + resveratrol isolado de cascas de sementes de soja; e (4) grupo controle, sem a adição de 2-ME ou resveratrol. Houve exposição das células primárias dos neurônios corticais ao anticorpo monoclonal beta-amiloide pré-incubado por 24 horas, com 10 µL de 4,2 µg/mL de resveratrol, e adições de 7,5 mmol/l de 2-metoxietanol. A adição de 2-ME e resveratrol (padrão e isolado do tempê) da cultura de células nas concentrações de 1,4, 2,8 e 4,2 µg/mL mostrou que a maioria dos neurônios cresceu bem. Por outro lado, após a exposição ao 2-ME e beta-amiloide, a glia foi ativada. Esses achados demonstram um papel do resveratrol na ação neuroprotetora e de neurorresgate.
ABSTRACT
Poisoning by Prosopis juliflora (mesquite) leads to neurological signs, cachexia and death, mainly in cattle and goats. Although the uncontrolled spread of mesquite in the Caatinga biome (biological invasion), which alters the epidemiological conditions of intoxication by this plant, has been proved for approximately 20 years, strategies for its control and prophylaxis still remain out of date. These new epidemiological conditions have allowed the uncontrolled consumption of large amounts of in natura mesquite pods by ruminants for long periods in invaded pastures, thus resulting in increased history of poisoning. This study aimed to describe the new epidemiological aspects of P. juliflora poisoning in cattle and goats, 78 years after the introduction of this plant in the country, with emphasis on its degree of invasion, and to update the control and prophylaxis measures of this intoxication and the mapping of areas of outbreak occurrence in the semiarid region of the state of Bahia, Brazil. Seven outbreaks of natural mesquite poisoning, two in goats (OB 1 and OB 2) and five in cattle (OB 3, OB 4, OB 5, OB 6, and OB 7), were studied in loco in the municipalities of Juazeiro, Iaçu, Tucano, Santa Teresinha, Barra do Mendes, Barra and Tabocas do Brejo Velho. In the studied outbreaks, clinical-epidemiological (OB 1 to OB 7) and histopathological (OB 1, OB 2, OB 3, and OB 5) findings were compatible with mesquite poisoning, and this was the first anatomopathological proof of poisoning by this plant in this state. In addition, in the state of Bahia, disease occurs in an area approximately three times larger than previously known. On the farms investigated, mesquite introduction occurred between 1980 and 2005, through the single planting of an average of 33 seedlings. Since then, propagation of this plant has occurred progressively, with gradual invasion of native pastures, which enabled the evaluation of plant spread (biological invasion) on these farms 15 (OB 2), 25 (OB 7), 30 (OB 5 and OB 6), 35 (OB 3) and 40 (OB 1 and OB 4) years after its introduction. Historical information on the introduction and spread of mesquite in the state of Bahia had never been analyzed. In 2020, a degree of mesquite invasion an average 59.57% was verified in the pastures of the seven farms where the outbreaks occurred. The great biological invasion capacity of this plant drew attention, especially in OB 5. The high degree of mesquite invasion observed (new epidemiological conditions) justifies the increased number of cases of poisoning observed in this study. Processing of P. juliflora pods (grinding) was not carried out on any farm (OB 1 to OB 7), and ruminants uncontrollably consumed large amounts of pods in natura for long periods in invaded pastures, which allowed massive dispersal of seeds through feces over decades. The main factors responsible for the gradual invasion of pastures by mesquite over time were absence of crop management plans (silvicultural treatments) and lack of knowledge by producers on disease etiology. Given the new epidemiological conditions, restriction of animal access to in natura pods in pastures and supply of mesquite bran are crucial for the control and prophylaxis of this poisoning, as consumption of in natura pods had a strong correlation with the high degree of invasion in the pastures where the seven outbreaks occurred. Additionally, although the commercialization of pods and exploitation of wood of mesquite trees can provide livestock farmers with extra income - being the correct management for areas invaded by this plant, such practice is either not yet known or not carried out technically or satisfactorily by farmers. In addition to being a threat to the Caatinga's biodiversity, the increasing invasion of semiarid areas by mesquite 78 years after its introduction in the Northeast region of Brazil, is a risk for herds, since the occurrence of poisoning outbreaks may become more frequent. Therefore, it is highly advisable that effective measures be adopted to control P. juliflora propagation.(AU)
A intoxicação por Prosopis juliflora (algaroba) cursa com sinais neurológicos, caquexia e morte, principalmente em bovinos e caprinos. Embora a disseminação descontrolada da algaroba na Caatinga (invasão biológica) tenha sido comprovada há cerca de 20 anos, o que altera as condições epidemiológicas dessa intoxicação, as estratégias de controle e profilaxia permanecem desatualizadas. Essas novas condições epidemiológicas permitem o consumo descontrolado de grande quantidade de vagens in natura de algaroba, por longos períodos, nas pastagens invadidas, o que tem resultado em aumento dos históricos de intoxicação. Objetivou-se com esse estudo descrever os novos aspectos epidemiológicos da intoxicação por P. juliflora em bovinos e caprinos, 78 anos após a introdução da planta no país, com ênfase no grau de invasão da planta, bem como atualizar as medidas de controle e profilaxia dessa intoxicação e das áreas de ocorrência dos surtos no semiárido baiano. Foram estudados in loco sete surtos (S1 a S7) de intoxicação natural por algaroba, sendo dois em caprinos (S1 e S2) e cinco em bovinos (S3, S4, S5, S6 e S7) no semiárido baiano (Juazeiro, Iaçu, Tucano, Santa Teresinha, Barra do Mendes, Barra e Tabocas do Brejo Velho). Nos surtos estudados, os achados clínico-epidemiológicos (S1 a S7) e histopatológicos (S1, S2, S3 e S5) foram compatíveis com intoxicação por algaroba, sendo essa intoxicação comprovada, pela primeira vez, com exames anatomopatológicos na Bahia. Ademais, na Bahia a doença ocorre em uma área cerca de três vezes maior do que a, até então, conhecida. Nas fazendas estudadas a introdução da algaroba ocorreu entre 1980 e 2005, através do plantio único de, em média, 33 mudas. Desde então, a disseminação da planta ocorreu de forma progressiva, invadindo gradativamente as pastagens nativas, o que permitiu avaliar a disseminação da planta (invasão biológica) nessas fazendas cerca de 15 (S2), 25 (S7), 30 (S5 e S6), 35 (S3) e 40 (S1 e S4) anos, após sua introdução. Informações históricas acerca da introdução da algaroba e sua disseminação na Bahia nunca haviam sido estudadas. Em 2020, verificou-se que nas pastagens das sete fazendas onde os surtos ocorreram, o grau de invasão por algaroba alcançou, em média, 59,57%. Chamou a atenção a grande capacidade de invasão biológica da planta, sobretudo, no S5. O alto grau de invasão da algaroba observado (novas condições epidemiológicas) justificou o aumento dos casos de intoxicação verificados nesse estudo. O beneficiamento das vagens (moagem) não era realizado em nenhuma fazenda (S1 a S7) e os ruminantes consumiam de forma descontrolada (livre) grande quantidade de vagens in natura, por longos períodos, nas pastagens invadidas, o que possibilitou a dispersão massiva das sementes da planta pelas fezes ao longo das décadas. O que aliado à inexistência de um plano de manejo do cultivo (tratamentos silviculturais) e ao desconhecimento da etiologia da doença pelos produtores foram os principais fatores responsáveis pela invasão gradativa da planta nas pastagens, ao longo dos anos, o que justifica o aumento dos casos de intoxicação observados na Bahia. Frente às novas condições epidemiológicas, a restrição do acesso dos animais as vagens in natura nas pastagens e o fornecimento do farelo de algaroba são cruciais para o controle e profilaxia dessa intoxicação, pois o consumo das vagens in natura teve forte correlação com o alto grau de invasão das pastagens onde os sete surtos ocorreram. Adicionalmente, embora a comercialização das vagens e a exploração da madeira da algaroba possam proporcionar renda extra aos pecuaristas e serem boas formas de manejo de áreas invadidas por algaroba, tais práticas ainda não são conhecidas ou não são realizadas de forma técnica ou a contento. A crescente invasão da algaroba no semiárido, 78 anos após a sua introdução no Nordeste, além de ser uma ameaça à biodiversidade da Caatinga é um risco para os rebanhos, visto que, a ocorrência de surtos de intoxicação podem se tornar mais frequentes. Desta maneira alerta-se para adoção de medidas efetivas de controle da propagação descontrolada da algaroba.(AU)
Subject(s)
Plant Poisoning/etiology , Plant Poisoning/epidemiology , Prosopis/poisoning , Plants, Toxic/poisoning , Ruminants , Cattle Diseases/etiologyABSTRACT
According to the World Health Organization, snakebites cause more death and disability and are more notorious than some tropical diseases. Snakebite is a leading medical emergency in Asia/Pacific. It is one of the major causes of mortality in India. The objective of this study was to determine the clinico-epidemiological profile of a neuroparalytic snake bite at the Department of Medicine, Krishna Institute of Medical Sciences, Karad, one of the tertiary care centers of Western Maharashtra, in India.METHODSA descriptive study of 80 patients was carried out at the Department of Medicine, KIMS, Karad, a tertiary care center of Western Maharashtra, India. Present study showed outcome, delay in arrival, and epidemiology of patients with low dose of ASV in neuroparalytic snakebites and ventilator support. Descriptive statistics were shown by using MS Excel and SPSS Version 25.RESULTSOut of 80 cases 56.2% were males and 43.8% were females with a mean age of 28.16 years. 63.7% of the snakebite victims were bitten outside and 85% of the snakebites occurred on the lower extremity. On an average, 15.24 vials of ASV were administered. 80% patient were in Intensive Care and they were on ventilator support and 91% patients recovered from these snake bites. 51.25% of the patients reached the hospital within the interval of 3-7 hours.CONCLUSIONSStudy signifies the importance of snakebite threat to the community. Delay in reaching a hospital in time where snakebite patients can be treated, was the most important cause of death. Public health programs should be strengthened. Administration of Low dose ASV and ventilator support can provide sufficient cure if patients reach on time. Lack of awareness, delay in reaching the hospital, and treatment by non-medical persons are important factors that should to be addressed.
ABSTRACT
Bites by snakes represent an important health problem in the tropical world including India. The true incidence of snakebites is difficult to assess and often is under reported. Though the exact number of snake bites is unknown, an estimated 5.4 million people are bitten each year with up to 2.7 million envenoming. Around 81,000 to 1,38,000 people die each year because of snake bites, and around three times as many amputations and other permanent disabilities are caused by snakebites annually. We wanted to determine frequency of various modes of presentation, complications and management of snakebite.METHODSAll patients presenting to emergency department of Basaveshwara Teaching and General Hospital with history of snakebite and features of envenomation were included in the study. All these patients were given Anti-Snake Venom. Symptomatic treatment of complications was done. Semi-structured questionnaire was filled during hospital stay to analyse various characteristics of snakebite and people’s attitude towards this problem.RESULTS75 cases of snakebite admitted to Basaveshwara Teaching & General Hospital, Gulbarga between January 2018 to November 2019 were studied. Males [50 (62.5%)] were affected more than females [25 (31.5%)] in the ratio of 2:1. Most common age group is 20-40 years [45 (60%)]. Snakebite is a common health hazard in rural areas [55 (73.34%)]. Agricultural labourers (68.6%) are the major sufferers with majority of bites occurring outdoor 60 (80%). 71 (94.66%) bites occurred over limbs, out of which 38 (50.66%) were in lower limbs. Most bites occur between 12 Noon to 12 Midnight 60 patients (81.2%). Out of 75 patients, 60 (80%) were poisonous snakebites, 20 (20%) were non-poisonous snakebites. Among 60 (80%) poisonous bites, 32 (53.34%) had neurotoxic manifestations and 28 (46.66%) had hemotoxic manifestations.CONCLUSIONSSnakebite is common in rural setup, in agricultural labourers. Most common victims are males in the age group between 20-40 years. Poisonous bites were more common than non-poisonous snake bites in this study. In neurotoxic envenomation ptosis was the commonest and earliest symptom while in hemotoxic envenomation, most common symptoms were bleeding from bite site and hematuria. The commonest complications were acute renal failure and respiratory paralysis. Shock, infection and gangrene were also noted in some patients. Maximum mortality was observed in patients who were admitted after 24 hours. Early hospitalization and timely ASV administration were the corner stones in the treatment of snakebite.
ABSTRACT
Background: Snakebites are well-known medical emergencies in many parts of the world, especially in rural areas.The incidence of snakebite mortality is particularly high in South-East Asia. Rational use of snake anti-venom can substantially reduce mortality and morbidity due to snakebites. Snake bite is an important health problem in India also especially in North Kerala which has an agricultural background. There is a lack of study regarding this topic in this area. North Kerala differs from other areas in the country as hump nosed pit viper bites are more common here due to its proximity to western Ghats where it .Anti snake venom is ineffective to bites by hump nosed pit viper. Authors objectives was to assess the clinical and epidemiological profile and outcome of poisonous snake bites.Methods: Retrospective observational study done among patients with snake bite with envenomation admitted in Academy of Medical education, Pariyaram, Kannur, Kerala from January 2018 to September 2018.Results: There were 90 cases of venomous snake bite during the study period. Of these males were predominant (70%). Majority were in the age group between 20 and 40. Majority of bites occurred in the months of June and July. Bite in the extremities were more common. Nine patients were brought 1 day after the bite. Snake identified most common was Russell’s viper followed by pit viper. Majority of the systemic envenomation was hemotoxic 80 patients (85%).Conclusions: The study stress the fact that snake bite is an important problem in North Kerala. The study also shows that delay in treatment is a major risk factor for morbidity. Hump nosed pit viper bites are more common in this area.
ABSTRACT
Background: In rural India, snakebite is an occupational and environmental hazard. WHO listed snakebite as one of the neglected tropical diseases and in rural India it is underreported because of popular traditional methods of treatments and lack of healthcare facilities. This study is an attempt to look into the epidemiological, clinical and prognostic indicators of neurotoxic snake bite in rural India.Methods: This study is a prospective, descriptive study of 25 neurotoxic snake bites admitted in our hospital from January to September 2019. Clinical factors like age, sex, clinical features, management and the outcome of patients are studied.Results: Young males were common victims of snakebite in evening hours during monsoon season. All patients received traditional methods of treatment, and despite this 64% of our patients reported to the hospital within 6 hours after the bite. Overall, the mortality rate in this study was 12%. Poor outcome was also noted in cases who were having respiratory failure and needed artificial ventilation (30%). Mortality was 22.2% in patients where bite to admission time was greater than 6 hours as compared to 6.25% in patients where it was less than 6 hours.Conclusions: Author concluded that a neurotoxic snake bite is a life-threatening emergency. In preventive measures, outdoor activities in dim lights during monsoon season should be restricted. Traditional treatments are still popular and trusted methods of treatment in rural India and these healers can be educated to recognize and refer immediately all neurotoxic bites to nearby medical facilities.
ABSTRACT
Background: Snake bite envenomation remains one of the commonest causes of mortality and morbidity in rural West Bengal. Objective of present study was to compare the rationality, effectiveness and adherence to standard treatment guidelines of Government of West Bengal of snake bite management over the high-risk periods of two years.Methods: This was a comparative study of snake bite management between 2016 and 2018 (over April to September) during peak risk season in a tertiary care teaching hospital in rural Bengal. The data was collected retrospectively from the treatment records in 2016 and from patients admitted with history of snake bite in the Medicine ward, ICU and ITU in 2018.Results: Records from 2016 yielded 177 snake bite patients (144 venomous and 82.5% neurotoxic envenomation) and in 2018, 190 cases (114 venomous and 71.1% neurotoxic). There was delay in presentation (>2 hours) in almost 80% cases in both years and 2.56% had anaphylactic reaction following ASV administration in 2018 against 3.15% in 2016. Ventilator support was necessary for 12% patients in 2018. Overall percentage of mortality reduced from 6.70% to 3.2% in 2018. Adherence to snake bite management STG was seen in 81.8% of the retrospective records vis a vis 80% cases in prospective analysis (p = 0.21).Conclusions: The survival rate in venomous snake bite is found to be high in this institution over last two seasons of snake bite. The practice of snake bite management is found to be adherent with standard protocol in most cases.
ABSTRACT
Background: Rural Bengal has one of the highest snakebite prevalence in India. This prospective observational study was initiated with the motive to analyse the effects and adherence to implementation of the new national snakebite protocol 2016.Methods: Data were collected from the patients admitted with snake bite on a pre-designed and pre tested case study form and analysed with the help of descriptive statistics.Results: A total of 75 patients arrived in the hospital during the study period out which 53 were male (most in the age group of 31-40 years) and majority of them were farmers (26.6%) or housewives (25%). Maximum of them were bitten in the lower limbs (54.6%) and peak time of bite was between 6 am-12 pm (40%). Most of them reached the hospital late, i.e., beyond 2 hours (70.6%). It was found that there were 26 neurotoxic, 16 hemotoxic and 1 neuro-hemotoxic cases and the rest were non-venomous cases. Fifty-one of them received ASV and 4 died. There was 80% adherence in the indication of ASV administration, 73.3% in the ASV dose, 32% in the monitoring after ASV administration, 94.66% in the monitoring 20 WBCT, 100% in adherence to haemodialysis as indicated.Conclusions: The results showed good adherence in all the parameters. Protocol guided treatment has also resulted in rational use of ASV. So, from this study, it was concluded that protocol guided treatment is effective in snakebite management, but its continuous revision and amendments should be considered in future.
ABSTRACT
We live in a world where daily exposure to environmental chemicals is inevitable. Many studies point to environmental chemicals a major cause of neurological diseases. Properly intervening in and managing the exposure requires up-to-date information about neurotoxic chemicals that may lead to neurological disorders. The recent literature on the neurotoxic effects of environmental chemicals was reviewed, including both animal and human studies. Parkinson's disease, Alzheimer's disease and autism are closely associated with environmental chemicals such as polychlorinated biphenys (PCBs), dioxins, polybrominated biphenyl ethers (PBDE), and perfluoroalkyls. There is strong evidence linking environmental chemical exposure to neurodevelopmental and neurodegenerative diseases. In particular, it is important to pay close attention to a high risk-age group where the window of exposure is critical to causing neurological disease.
Subject(s)
Animals , Humans , Alzheimer Disease , Autistic Disorder , Dioxins , Endocrine Disruptors , Ether , Ethers , Nervous System Diseases , Neurodegenerative Diseases , Parkinson DiseaseABSTRACT
The goal of this study was to compare the visual contrast sensitivity (CS) of men and women exposed and not exposed to organic solvents. Forty-six volunteers of both genders aged between 18 and 41 years (mean±SD=27.72±6.28) participated. Gas station attendants were exposed to gas containing 46.30 ppm of solvents at a temperature of 304±274.39 K, humidity of 62.25±7.59% and ventilation of 0.69±0.46 m/s (a passive gas chromatography-based sampling method was used considering the microclimate variables). Visual CS was measured via the psychophysical method of two-alternative forced choice using vertical sinusoidal gratings with spatial frequencies of 0.2, 0.5, 1.0, 2.0, 5.0, 10.0, and 16.0 cpd (cycles per degree) and an average luminance of 34.4 cd/m2. The results showed that visual CS was significantly lower (P<0.05) in the following groups: i) exposed men compared to unexposed men at frequencies of 0.2, 0.5, 1.0, and 2.0 cpd; ii) exposed women compared to unexposed women at a frequency of 5.0 cpd; and iii) exposed women compared to exposed men at a frequency of 0.5 cpd, even at exposures below the tolerance limit (300 ppm). These results suggest that the visual CS of exposed men was impaired over a wider range of spatial frequencies than that of exposed women. This difference may have been due to the higher body fat content of women compared to that of men, suggesting that body fat in women can serve as a protective factor against neurotoxic effects.
Subject(s)
Humans , Male , Female , Adult , Young Adult , Contrast Sensitivity/drug effects , Occupational Exposure/adverse effects , Solvents/adverse effects , Visual Perception/physiology , Adipose Tissue/anatomy & histology , Brazil/epidemiology , Educational Status , Microclimate , Occupational Exposure/statistics & numerical data , Sensory Thresholds/physiology , Sex Factors , Spatial Learning/physiologyABSTRACT
Snake bite is a common neglected emergency in children. Due to lack of adequate epidemiological data its incidence is underestimated. This study analyses the clinical profile of neurotoxic snake bites in children. Retrospective analysis of 37 children with features of neurotoxicity with or without history of snake bite was done. 37 cases of neurotoxic envenomation had a median age of 8 years. 30 were males. Majority of bites occurred during night hours and in upper limbs. Among the 17 who were bitten during night 12 were sleeping on floor. The most common systemic presentation was ptosis (94.59%) followed by difficulty in breathing (78.37%), pain abdomen (64.86%) blurring of vision and diplopia (54.04%), decreasing level of consciousness (45.94%) and vomiting (29.72%). 13 patients (35.13%) with clinical features of neurotoxic envenoming but without any history of snake bite were brought with history of early morning sudden onset of abdominal pain. All patients were given Anti Snake Venom (ASV) with medial dose of 600 units. Twenty patients received ventilator support. Ten (27%) patients died all of whom received ASV after a delay of at least 5 hours.
ABSTRACT
Curcumin (CUR), the main phenolic composition in turmeric, shows preventive effects in various diseases. CUR is commonly found in the Curcuma species and historically applied in herbal medicine. Numerous studies have indicated that CUR possesses protective effects against toxic agents in the various animal tissues including the brain. This study found that CUR may be effective in nervous system problems induced by neurotoxic agents. However, due to the lack of information on human, more investigations are needed to determine the efficacy of CUR as an antidote matter. The current study aimed to critically review the recent literature data from 2014 to 2016 that regarding the therapeutic aspects of CUR versus neurotoxic agents-induced brain damage and its involved mechanisms.
ABSTRACT
Curcumin (CUR), the main phenolic composition in turmeric, shows preventive effects in various diseases. CUR is commonly found in the Curcuma species and historically applied in herbal medicine. Numerous studies have indicated that CUR possesses protective effects against toxic agents in the various animal tissues including the brain. This study found that CUR may be effective in nervous system problems induced by neurotoxic agents. However, due to the lack of information on human, more investigations are needed to determine the efficacy of CUR as an antidote matter. The current study aimed to critically review the recent literature data from 2014 to 2016 that regarding the therapeutic aspects of CUR versus neurotoxic agents-induced brain damage and its involved mechanisms.
ABSTRACT
During clinical endodontic treatment, we often find radiopaque filling material beyond the root apex. Accidental extrusion of calcium hydroxide could cause the injury of inferior alveolar nerve, such as paresthesia or continuous inflammatory response. This case report presents the extrusion of calcium hydroxide and treatment procedures including surgical intervention. A 48 yr old female patient experienced Calcipex II extrusion in to the inferior alveolar canal on left mandibular area during endodontic treatment. After completion of endodontic treatment on left mandibular first molar, surgical intervention was planned under general anesthesia. After cortical bone osteotomy and debridement, neuroma resection and neurorrhaphy was performed, and prognosis was observed. But no improvement in sensory nerve was seen following surgical intervention after 20 mon. A clinician should be aware of extrusion of intracanal medicaments and the possibility of damage on inferior alveolar canal. Injectable type of calcium hydroxide should be applied with care for preventing nerve injury. The alternative delivery method such as lentulo spiral was suggested on the posterior mandibular molar.
Subject(s)
Female , Humans , Anesthesia, General , Calcium Hydroxide , Calcium , Debridement , Mandibular Nerve , Molar , Neuroma , Osteotomy , Paresthesia , PrognosisABSTRACT
As quantum dots( QDs),an advanced porduct of nanotechnology,have been widely used in bio-medicine due to their unique photoelectric properties. QD safety evaluation has become a hot area of research. So far,some researchers have expressed concern about the neurotoxic potential of QDs because the central nervous system was confirmed to be one of the target organs. Several studies found that QDs could enter the central nervous system by crossing the blood brain barrier and following neural pathways and produce some neurotoxic effects,such as damaging the structure and function of neural cells and impairing synaptic plasticity. The potential toxicity mechanisms could include oxidative stress,inflammation and change of ion channels.
ABSTRACT
El thinner es uno de los productos de mayor utilización en la industria de las pinturas, lubricantes y pegamentos. Su composición es variable de acuerdo con su uso y calidad. Sin embargo, la exposición crónica es una preocupación debido a que puede afectar órganos principales tales como pulmones, hígado, riñón y glándulas suprarrenales. En este estudio fue caracterizada la composición de varias muestras de thinner, disponibles comercialmente en la ciudad de Cartagena, que fueron recolectadas en diferentes almacenes y analizadas por cromatografía de gases acoplada a espectrometría de masas (GC/MS). Los resultados mostraron que no solo la composición, sino también la distribución relativa de los componentes presentes en las muestras son variables. Treinta y dos compuestos fueron detectados, entre los que se encuentran: tolueno, o-xileno, p-xileno y etilbenceno, con frecuencias de aparición de 91,7%, 66,7%, 75,0% y 66,7%, respectivamente. El desconocimiento del riesgo de intoxicación, generado al manipular este tipo de mezclas, puede ser la causa de muchos de los problemas de salud en personas expuestas al thinner, tanto en actividades laborales como domésticas. Una minería de datos mostró la asociación potencial entre los componentes del thinner y manifestaciones clínicas, las cuales incluyen daño renal y hepático, pérdida de cabello, alteraciones hematológicas, dermatitis, ansiedad y problemas de equilibrio, entre otras. En conclusión, el thinner posee gran variabilidad tanto en sus componentes como en la proporción relativa de los mismos. Los efectos perjudiciales en la salud por exposición directa o indirecta a estos componentes han sido ampliamente descritos en la literatura.
Thinner is a widely used product in the industry of paints, lubricants and adhesives. Its composition varies according to its use and quality. However, its chronic exposure is a concern, because it can affect major organs such as lungs, liver, kidney and the adrenal glands. This study characterizes the composition of several thinner samples commercially available in the city of Cartagena. Twelve samples were collected in different stores, these were then analyzed through gas chromatography coupled to mass spectrometry (GC/MS). The results showed that not only the composition but also the relative distribution of the components present in the samples are variable. Thirty two compounds were detected: toluene, o-xylene, p-xylene and ethylbenzene -among others- with occurrence frequencies of 91.7, 66.7, 75, and 66.7%, respectively. The lack of knowledge regarding the risk of poisoning, produced when handling this type of mixtures, may be the cause of many health problems in people exposed to thinner, both in workplace and domestic activities. A data mining showed the potential association between thinner components and clinical manifestations, which include kidney and liver damage, hair loss, haematological disorders, dermatitis, anxiety and balance problems, among others. In conclusion, thinner has large variability, both in terms of components and of their relative composition. The adverse health effects of direct or indirect exposure to these components have been widely described in the literature.
O Tíner é um dos produtos de maior utilização na indústria das pinturas, lubrificantes e colas. Sua composição é variável conforme a seu uso e qualidade. No entanto, a exposição crônica é uma preocupação devido a que pode afetar órgãos principais tais como pulmões, fígados, rins e glândulas suprarrenais. Neste estudo foi caracterizada a composição de várias amostras de Tíner, disponíveis comercialmente na cidade de Cartagena. Doze amostras de Tíner foram recoletadas em diferentes lojas e analisadas por cromatografia gasosa acoplada a espectrometria de massas (GC/MS). Os resultados mostraram que não só a composição, más também a distribuição relativa dos componentes presentes nas amostras são variáveis. Trinta e dois compostos foram detectados, entre os que se encontram: tolueno, o-xileno, p-xileno e etilbenceno, com frequências de aparição de 91.7, 66.7, 75.0 e 66.7%, respectivamente. O desconhecimento do risco de intoxicação, gerado ao manipular este tipo de misturas, pode ser a causa de muitos dos problemas de saúde em pessoas expostas ao Tíner, tanto nas atividades laborais quanto domésticas. Uma mineração de dados mostrou a associação potencial entre os componentes do Tíner e manifestações clínicas, as quais incluem dano renal e hepático, perda de cabelo, alterações hematológicas, dermatite, ansiedade e problemas de equilíbrio, entre outras. Em conclusão, o Tíner possui grande variabilidade tanto em seus componentes quanto na proporção relativa dos mesmos. Os efeitos prejudiciais na saúde por exposição direta ou indireta a estes componentes têm sido amplamente descritos na literatura.
Subject(s)
Humans , Solvents , Poisoning , Occupational Exposure , Colombia , Impacts of Polution on Health , Toxicity , Nerve AgentsABSTRACT
<p><b>OBJECTIVE</b>To develop an ICR (female) mouse bioassay (MBA) for toxicity confirmation and evaluation of neurotoxins (brevetoxins)-contaminated shellfish.</p><p><b>METHODS</b>Brevetoxins (BTX-B) as a causative agent of neurotoxic shellfish poisoning (NSP) under different shellfish matrices were intraperitoneally injected at different doses into mice to study their toxic effects and to differentiate the range of lethal and sublethal dosages. Their sensitivity and specificity were analyzed with 2 competitive ELISA kits for quantitative determination of standard BTX-B and dihydroBTX-B under different shellfish matrix-diluent combinations. Detection rates of MBA and two antibody-based assays for BTX-B from field NSP-positive shellfish samples were compared.</p><p><b>RESULTS</b>BTX-B could be detected in shellfish tissues at concentration of 50-400 μg/100 g under shellfish matrix-Tween-saline media, which were appropriate to identify toxic shellfish at or above the regulatory limit (80 μg/100 g shellfish tissues). The LD50 identified was 455 mg/kg for BTX-B under general shellfish matrices (excluding oyster matrices) dissolved in Tween-saline. The presence of shellfish matrices, of oyster matrices in particular, retarded the occurrence of death and toxicity presentation in mice. Two antibody-based assays, even in the presence of different shellfish matrix-diluent combinations, showed acceptable results in quantifying BTX-B and dihydroBTX-B well below the regulatory limit.</p><p><b>CONCLUSION</b>The two ELISA analyses agree favorably (correlation coefficient, r³⋝0.96; Student's t-tests, P>0.05) with the developed bioassay.</p>
Subject(s)
Animals , Female , Mice , Biological Assay , Calibration , Marine Toxins , Toxicity , Mice, Inbred ICR , Oxocins , Toxicity , ShellfishABSTRACT
We report a case of severe envenoming with unusual complications and two anecdotal cases of fatalities following proven 17-scale-row ‘Sind krait’ (<i>Bungarus</i> cf. <i>sindanus</i>) bites on people sleeping in temporary huts at construction sites in Pune District, Maharashtra, India. A 25-yr-old male developed progressive neuromuscular paralysis, abdominal pain and autonomic disturbances complicated by four prolonged episodes of pulseless ventricular tachycardia requiring defibrillation, and followed by pulmonary edema secondary to impaired left ventricular systolic function and hyperfusion. There was no response to antivenom; mechanical ventilation was required for six days. Only one other case of fatal envenoming likely caused by this species had been reported previously in India. The distribution of <i>B. sindanus</i> sensu lato from eastern Afghanistan to India overlaps with that of the superficially very similar common krait (<i>Bungarus caeruleus</i>). Thus, <i>B.</i> cf. <i>sindanus</i> envenoming may be common but routinely overlooked or misdiagnosed.