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1.
J. venom. anim. toxins incl. trop. dis ; 28: e20210047, 2022. tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-1375811

ABSTRACT

Accidents with venomous animals are a public health issue worldwide. Among the species involved in these accidents are scorpions, spiders, bees, wasps, and other members of the phylum Arthropoda. The knowledge of the function of proteins present in these venoms is important to guide diagnosis, therapeutics, besides being a source of a large variety of biotechnological active molecules. Although our understanding about the characteristics and function of arthropod venoms has been evolving in the last decades, a major aspect crucial for the function of these proteins remains poorly studied, the posttranslational modifications (PTMs). Comprehension of such modifications can contribute to better understanding the basis of envenomation, leading to improvements in the specificities of potential therapeutic toxins. Therefore, in this review, we bring to light protein/toxin PTMs in arthropod venoms by accessing the information present in the UniProtKB/Swiss-Prot database, including experimental and putative inferences. Then, we concentrate our discussion on the current knowledge on protein phosphorylation and glycosylation, highlighting the potential functionality of these modifications in arthropod venom. We also briefly describe general approaches to study "PTM-functional-venomics", herein referred to the integration of PTM-venomics with a functional investigation of PTM impact on venom biology. Furthermore, we discuss the bottlenecks in toxinology studies covering PTM investigation. In conclusion, through the mining of PTMs in arthropod venoms, we observed a large gap in this field that limits our understanding on the biology of these venoms, affecting the diagnosis and therapeutics development. Hence, we encourage community efforts to draw attention to a better understanding of PTM in arthropod venom toxins.(AU)


Subject(s)
Animals , Arthropod Venoms/toxicity , Protein Processing, Post-Translational , Phosphorylation , Scorpions , Mass Spectrometry/methods , Spiders , Wasps , Bees , Glycosylation
2.
Rev. cuba. invest. bioméd ; 28(1)ene.-mar. 2009. graf
Article in Spanish | LILACS | ID: lil-532156

ABSTRACT

El veneno del alacrán azul, Rophalurus junceus es comercializado con el nombre de Escozul. Este producto natural se emplea en el tratamiento de diferentes patologías. Este trabajo evaluó el efecto citotóxico in vitro de este producto en las líneas tumorales P3-X63/AG8/653 y Dunning R3327-G provenientes de mieloma murino y próstata de rata, respectivamente. La citotoxicidad fue evaluada mediante la cinética de crecimiento celular y el daño metabólico. Se utilizaron dosis de 1, 10, 20, 50, 100 y 200 mg/mL. El veneno presentó un efecto citostático dependiente de la línea tumoral en cuestión. Las dosis efectivas variaron entre las líneas celulares ensayadas. Se estudió además la estabilidad del producto almacenado durante 30 días a temperaturas de -20 y 4ºC, se evidenció la pérdida de la actividad biológica. El trabajo demostró la citotoxicidad del veneno crudo del alacrán azul en cultivos celulares.


Poison of blue scorpion (Rophalurus junceus) is marketed as Escozul. This natural product is used in treatment of different pathologies. Present paper evaluated the in vitro cytotoxic effect of this product in P3-X63/AG8/653 and Dunning R3327-G tumor lines from murine myeloma and rat prostate, respectively. Cytotoxic effect was evaluated by means of cellular growing kinetics and the metabolic damage. Doses of 1,10, 20, 50, 100, and 200 ìg/mL. Poison had a cytostatic effect dependent of tumor line at issue. Doses effective varied among the cellular lines assessed. We studied also stability of product stored during 30 days at temperatures of -20° and 4° C, evidenced the loss of biological activity. We showed cytotoxic effect of crude poison of blue scorpion in cellular cultures.


Subject(s)
In Vitro Techniques , Arthropod Venoms/toxicity , Arthropod Venoms/therapeutic use
3.
Arq. neuropsiquiatr ; 64(4): 1030-1032, dez. 2006. ilus, tab
Article in English, Portuguese | LILACS | ID: lil-439766

ABSTRACT

The case of a 70 year-old, previously healthy woman who developed a severe bleeding diathesis shortly after touching a Lonomia obliqua caterpillar and finally died from multiple intracerebral hemorrhages is described. Brain hemorrhages are the leading cause of death in patients envenomed by the Lonomia species. The pertinent literature is reviewed and the most relevant clinical features highlighted, with emphasis on diagnosis. The use of new therapeutic options such as anti-Lonomia serum is discussed.


O caso de uma mulher de 70 anos, previamente hígida, que desenvolveu diátese hemorrágica grave após contato com uma lagarta Lonomia obliqua, resultando em óbito por hemorragia intracerebral é relatado. Hemorragias cerebrais são uma das causas de morte em acidentes por Lonomia. A literatura pertinente é revisada, sendo as características clínicas e laboratoriais mais relevantes discutidas com ênfase para o diagnóstico, e o uso de novas abordagens terapêuticas como o soro anti-Lonomia.


Subject(s)
Aged , Animals , Female , Humans , Arthropod Venoms/toxicity , Cerebral Hemorrhage/etiology , Lepidoptera , Cerebral Hemorrhage/diagnosis , Fatal Outcome , Tomography, X-Ray Computed
4.
Arch. Hosp. Vargas ; 38(1/2): 55-7, ene.-jun. 1996. tab
Article in Spanish | LILACS | ID: lil-192500

ABSTRACT

Se revisó la casuística de empozoñamiento escorpiónico en el Servicio de Pediatría del Hospital Dr. Domingo Luciani durante el período 1988-1995. Se presentan 11 casos procedentes del Distrito Sucre, Estado Miranda, cuyas edades varían desde los 10 meses hasta los 12 años, de estos sólo uno ameritó ingreso en la unidad de cuidados intensivos; no se presentó ninguna defunción.


Subject(s)
Child , Adolescent , Humans , Venoms/adverse effects , Scorpions , Arthropod Venoms/poisoning , Arthropod Venoms/toxicity , Child , Pediatrics
5.
Rev. méd. IMSS ; 32(6): 527-31, nov.-dic. 1994. tab
Article in Spanish | LILACS | ID: lil-173975

ABSTRACT

La picadura de alacrán es un motivo importante de ingreso a los servicios de urgencias. Con el fin de conocer su prevalencia y características clínicas se informa la experiencia obtenida en 126 pacientes en la ciudad de Querétaro. Qro. Del presente estudio se obtuvo una tasa de prevalencia de 27.9 por cada 100,000 habitantes, no existiendo predominio en cuanto a uno u otro sexo; la casa habitación fue el lugar que registró la mayor proporción de piquete del artrópodo, 55 por ciento de los pacientes sufrieron la picadura en las extremidades superiores, los sintomas principales fueron dolor local, parestesias, edema laríngeo, sialorrea y eritema. En más de 50 por ciento de los casos se clasificó la sintomatología como moderada. Es importante resaltar la ausencia de defunciones durante le tiempo en que se realizó la investigación. La información contenida en el presente estudio permite observar que la picadura de alacrán reviste características de importancia que permiten considerarla como un problema de salud pública


Subject(s)
Infant, Newborn , Infant , Child, Preschool , Child , Adolescent , Adult , Humans , Male , Female , Scorpions/pathogenicity , Bites and Stings/epidemiology , Emergency Service, Hospital/statistics & numerical data , Arthropod Venoms/toxicity , Scorpion Venoms/toxicity
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