A5069005215- Venomous Animal Envenomation and Studies
- Amphibian and Reptile Biology
- Rabies epidemiology and control
- Healthcare and Venom Research
- Plant and animal studies
- Animal and Plant Science Education
- Bird parasitology and diseases
- Insect and Arachnid Ecology and Behavior
- Parasite Biology and Host Interactions
- Insect and Pesticide Research
- Toxin Mechanisms and Immunotoxins
- Mosquito-borne diseases and control
- Lipid Membrane Structure and Behavior
- Bioactive Natural Diterpenoids Research
- Animal Behavior and Reproduction
- Lepidoptera: Biology and Taxonomy
- Botanical Research and Chemistry
- Spider Taxonomy and Behavior Studies
- Yersinia bacterium, plague, ectoparasites research
- Food Science and Nutritional Studies
- Marine Sponges and Natural Products
- Entomological Studies and Ecology
- Helminth infection and control
- Cell death mechanisms and regulation
- Prostate Cancer Diagnosis and Treatment
Universidade Federal de São Paulo
2018-2024
Universidade Federal de Pernambuco
2006-2021
Fundação para o Desenvolvimento da UNESP
2015
National Nuclear Energy Commission
1998
A novel prothrombin activator enzyme, which we have named ‘berythractivase’, was isolated from Bothrops erythromelas (jararaca-da-seca) snake venom. Berythractivase purified by a single cation-exchange-chromatography step on Resource S (Amersham Biosciences) column. The overall purification (31-fold) indicates that berythractivase comprises about 5% of the crude It is single-chain protein with molecular mass 78kDa. SDS/PAGE after activation showed fragment patterns similar to those generated...
A novel lectin was isolated from Bothrops leucurus snake venom using a combination of affinity and gel filtration chromatographies. The (BlL) agglutinated glutaraldehyde-treated rabbit human erythrocytes with preference for erythrocytes. Galactose, raffinose, lactose, fetal bovine serum casein inhibited lectin-induced erythrocyte agglutination. BlL, molecular mass 30 kDa composed two subunits 15 kDa, showed dependence on calcium. BlL is an acidic protein highest activity over the pH range...
Neoplastic transformation is the abnormal proliferation of cells. These transformations are often related to changes in cell surface glycoconjugates which can be detected by lectins. We evaluated anti-tumor potential BlL, a galactoside-binding lectin isolated from Bothrops leucurus venom as well its cytotoxicity and hemolysis activity. The phosphatidylserine externalization mitochondrial membrane were also determined. BlL exhibited cytotoxic activity against all tumor lines tested induced...
Since one of the priorities public policies and conservation projects is biodiversity safeguarding, understanding richness distribution amphibian communities becomes an important tool for defining priority areas conservation. Herein, we provide a list amphibians registered in Estação Ecológica de Murici, state Alagoas, Brazil, highest Atlantic Forest. We used data collected over two years field expeditions together with more than 30 information available herpetological collections. A total...
We studied diet, reproduction, and sexual dimorphism in Mabuya arajara (Arajara Skink; Scincidae) a rainforest on the slopes of Araripe Plateau, northeastern Brazil. Diet was composed mainly arthropods, mostly termites, when considering both number (93.5%, n = 58) volume (58.5%, 58). can be classified as forager that uses intermediate foraging techniques, do most its congeners. Brood size M. ranged from two to nine neonates (4.8 ± 1.7), larger females tended produce broods. The period...
Brazil has a great diversity of snakes, but there are few published works concerning parasitism in these animals. The present paper examined pulmonary infection by pentastomids large snakes from northeasternBrazil, including six specimens Boa constrictor and two examples Lachesis muta the Serpentarium Federal University Pernam- buco (UFPE), Brazil, all which were collected Atlantic Coastal Forest. One specimen B. was infected Porocephalus sp. (intensity 5.0) one L. P. stilesi 15.0).
Bothrops erythromelas is responsible for many snake bites in northeastern Brazil. In the present study we determined vivo distribution of venom following its subcutaneous injection into mice. B. and albumin were labeled individually with 131I by chloramine T method, separated a Sephacryl® S-200 column. The efficiency labeling was 68%. Male Swiss mice (40-45 g), which had been provided drinking water containing 0.05% KI over period 10 days prior to experiment, inoculated dorsally (sc) 0.3 ml...
Snake venom thrombin-like enzymes (SVTLEs) are serine proteinases that clot fibrinogen. SVTLEs distributed mainly in venoms from snakes of the Viperidae family, comprising venomous pit viper snakes. Bothrops throughout Central and South American responsible for most snakebites. Most display activity their venoms, but it has been shown some species do not present it. In this work, to understand SVTLE polymorphism Bothrop s snake we studied individual samples two medical importance Brazil:...
Siphonops paulensis Boettger, 1892 is a Neotropical siphonopid caecilian widely distributed in South America. Herein, we fill knowledge gaps the distribution of S. mostly northeastern Brazil, including four new state records.
Abstract: Currently the Atlantic Forest hotspot has less than 11% of its original coverage. However approximately 300 species reptiles are known to inhabit this ecoregion, which 34% endemic. The creation protected areas represents a strategy for preserving ecosystems and managing land use, attaining proper management these areas, information on local biodiversity is essential. Herein we provide first list reptile Estação Ecológica Área de Proteção Ambiental Murici, two overlapping located in...
Species in the Adelophryne genus consist of diminutive, agile, and secretive frogs that inhabit forest leaf litter have direct development. richness within was previously underestimated, several new species recently been described. Here, we describe a from Atlantic Forest Brazilian states Alagoas, Pernambuco, Paraíba. The is characterized by its small body size, distinct tympanum, toes with subarticular tubercles, fingers mucronate, three phalanges Finger IV, an advertisement call composed...
Abstract The composition of macro endoparasites associated with the lizard Norops fuscoauratus (Squamata) was analysed in two localities Atlantic Forest on northeast Brazil between December 2012 and July 2015. 74 specimens N. were examined five species helminths reported, being: (a) for population Pernambuco: Cystacanth (Prevalence=37.5%), Physaloptera retusa Rudolphi, 1819 (Prevalence=4.16%), larva flatworm (Prevalence=2.08%), Rhabdias sp. (Prevalence=2.08%) Strongyluris oscari Travassos,...
We evaluated the activity period, thermal ecology, habitats, and preference for microhabitats of skink Mabuya arajara in a humid forest environment on slope Araripe Plateau, Brazil. A total 283 lizards were observed. The found to be diurnally active (unimodal type pattern), with peak during hottest hours day (1100 1200). About habitat use, majority individuals (73.8% N = 209) recorded narrow transitional area, edges forest; while 26.4% observed open areas no observations made dense forest....
Lizards can display several defensive behaviours. Here, we describe behaviours of Coleodactylus meridionalis (Meridian Gecko) in an Atlantic Forest fragment Pernambuco, Northeastern Brazil, using pitfall traps with drift fences and time-limited diurnal nocturnal search method. We also tested if body size sex predict the incidence caudal autotomy. recorded six antipredatory 253 individuals. Hiding was most common behaviour, followed by immobility, locomotory escape, autotomy, cloacal...