Low-level laser therapy (670 nm) on viability of random skin flap in rats

This study investigated the effects of 670 nm laser, at different fluences, on the viability of skin flap in rats. One hundred male animals were used. The animals were divided into control group; group treated with 3 J/cm(2); group treated with 6 J/cm(2); group treated with 12 J/cm(2) and group treated with 24 J/cm(2). The skin flap was made on the backs of all animals studied, with a plastic sheet interposed between the flap and the donor site. Laser irradiation was done immediately after the surgery and on days 1, 2, 3 and 4 after surgery. The percentage of necrosis of the flap was calculated at the 7th postoperative day. Additionally, a sample of each flap was collected to enable us to count the blood vessels. Treated animals showed a statistically significant smaller area of necrosis than did the control group. The necrosis in the treated groups was 41.82% (group 2), 36.51% (group 3), 29.45% (group 4) and 20.37% (group 5). We also demonstrated that laser irradiation at 670 nm, at all doses used, had a stimulatory effect on angiogenesis. Our study showed that the 670 nm laser was efficient to increase the viability of the skin flap, at all fluences used, with a tendency of reaching better results at higher doses.

Effect of green Coffea arabica L. seed oil on extracellular matrix components and water-channel expression in in vitro and ex vivo human skin models

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Expression of differential genes involved in the maintenance of water balance in human skin by Piptadenia colubrina extract

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Ventilatory responses to skin extract in catfish

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Thermoluminescence measurements of entrance surface skin dose in exams of dog's chest in veterinary radiology

This study aims to determine the entrance surface skin doses in dogs (with suspected pulmonary metastasis) submitted to chest X-rays using the technique of thermoluminescence (TL) dosimetry. Twenty seven radiologic exams of dogs of different breed and sizes were performed. The radiation doses were assessed using thermoluminescent dosimeters of calcium sulphate doped with dysprosium (CaSO(4):Dy) produced at Instituto de Pesquisas Energeticas e Nucleares (IPEN-CNEN). The entrance surface skin dose range evaluated in this type of procedure was between 0.43 mGy to small size dogs and 4.22 mGy to big size dogs with repeated exams. The obtained results indicate that is extremely important the assessment of radiation doses involved in veterinary diagnostic radiology procedures, to evaluate the delivered doses to the animals, to be used as a parameter in the individual monitoring of pet's owners, who assist the animal positioning, and to protect occupationally exposed workers at the Veterinary Radiology Clinics. (C) 2010 Elsevier Ltd. All rights reserved.

Hunger suppresses the onset and the freezing component of the antipredator response to conspecific skin extract in pintado catfish

Although the skin of an injured conspecific releases alarm substance in some fish species, it has been shown that such damage induces feeding behaviour rather than an alarm reaction under conditions of food scarcity. We studied chemical communication associated with this paradox in a Brazilian catfish, the pintado (Pseudoplatystoma coruscans). In preliminary tests pintado were confirmed to demonstrate an alarm reaction to conspecific skin extract. In the experiment we investigated whether skin extract of pintado induces either alarm response (panic or alert component) or feeding in hungry conspecifics. Fish feed-deprived for eight days and fed control fish were exposed to either conspecific skin extract or distilled water (as a control). Alarm reaction was restricted to the skin extract treatment and occurred in the fish irrespective of their hunger state, but the components of this response were significantly affected by hungry. Fed fish showed a complete alarm reaction (dashing and freezing behaviours). Feed-deprived fish exhibited only part of this biphasic response, the dashing component. We conclude that chemicals from injured fish elicit an alarm reaction, which is partially inhibited by feeding motivation.

S-100 dendritic cells in normal and Dermatobia hominis infested cattle skin

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Skin glands, poison and mimicry in dendrobatid and leptodactylid amphibians

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Skin diseases in Guiana dolphins (Sotalia guianensis) from the Paranagua estuary, Brazil: A possible indicator of a compromised marine environment

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Pigmentation in Anuran Testes: Anatomical Pattern and Variation

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Phylogenetic signal and variation of visceral pigmentation in eight anuran families

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Visceral pigmentation in four Dendropsophus species (Anura: Hylidae): Occurrence and comparison

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Visceral Pigmentation in Three Species of the Genus Scinax (Anura: Hylidae): Distinct Morphological Pattern

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Lipopolysaccharides induce changes in the visceral pigmentation of Eupemphix nattereri (Anura: Leiuperidae)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Phenolic Composition of the Edible Parts (Flesh and Skin) of Bordo Grape (Vitis labrusca) Using HPLC-DAD-ESI-MS/MS

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)