Transplante de fração total de células mononucleares ou fração vascular estromal associada à membrana celulósica em feridas cutâneas experimentais de coelhos / Total fraction of mononuclear cell or stromal vascular fraction transplant associated with cellulosic membrane in experimental cutaneous wounds in rabbits

A pele apresenta diversas funções importantes para o organismo. A manutenção de sua integridade é fundamental, entre outras, para impedir a penetração de microrganismos e a perda de líquidos essenciais à manutenção da vida. Por estar constantemente exposta ao meio ambiente, a pele é altamente susceptível a traumas que podem acarretar soluções de continuidade. A cicatrização da pele ferida deve ser rápida e diversas alternativas são buscadas, visando à redução do tempo de reparo a fim de garantir cicatriz funcional e esteticamente aceitável. Uma opção cada vez mais viável para reparar tecidos danificados é a terapia celular com células-tronco adultas. Os objetivos deste trabalho consistiram em avaliar o transplante da fração total de células mononucleares (FTCM) da medula óssea (MO) e da fração vascular estromal (FVE) do tecido adiposo (TA), associado ao uso da membrana celulósica. Para realização deste experimento, 20 coelhos foram divididos aleatoriamente em quatro grupos com cinco animais cada. Após a indução da ferida cutânea experimental, o grupo A, não recebeu nenhum tratamento, o grupo B, recebeu apenas membrana celulósica e os grupos C e D, além de receberem a membrana, foram submetidos a transplante autólogo da FTCM, com valor total de células entre 6,92 x 106 a 4,91 x 107 e uma viabilidade de 82 a 97% ou da FVE, com valor total de células entre 9,6 x 105 e 6,5 x 106 e uma viabilidade de 66 a 87%, respectivamente. Ao final do período de avaliação, os três grupos tratados apresentaram diferença estatística significativa da área da ferida em relação ao grupo controle e o grupo que recebeu a FVE do tecido adiposo apresentou o menor tempo de cicatrização da ferida. (AU)

The skin presents various important functions to the organism. The maintenance of its integrity is fundamental, among others, to prevent penetration of microorganisms and exit of liquids essential to life maintenance. Due to its constant environment exposure, the skin is highly susceptible to trauma which can result solutions of continuity. The healing of wounded skin should be fast and many alternatives are searched for, aiming to reduce repair time and to guarantee a functional and esthetically acceptable scar. One option to repair injured tissues which is ever more viable is cellular therapy with adult stem cells. The aims of this study consisted in evaluating the transplant of total mononuclear cell fraction (TMCF) from bone marrow (BM) or stromal vascular fraction (SVF) from adipose tissue (AT), associated with the use of cellulose membrane. To carry out this experiment, 20 rabbits were randomly divided in four groups with five animals each. After induction of the experimental cutaneous wound, Group A did not receive any treatment; group B received only cellulose membrane; and groups C and D, in addition to receiving the membrane, were submitted to autologous transplant of TMCF, with total cell value between 6,92 x 106 and 4,91 x 107 and a viability of 82 to 97% or SVF, with total cell value between 9,6 x 105 and 6,5 x 106 and a viability of 66 a 87%, respectively. At the end of the evaluation period, the three treated groups presented significant statistical difference of wound area in relation to the control group, and the group which received SVF from adipose tissue presented the shortest wound healing time. (AU)

cat

Background: The family Capillariidae includes several species that parasite a wide variety of domestic and wild animals. Species such as Capillaria plica and Capillaria feliscati are found in the bladder, kidneys and ureters of domestic and wild carnivores. These nematodes are not still well known in Brazil, but have a great importance for studies of urinary tract diseases in domestic animals, mainly cats. The parasites life cycle is still unclear, may be direct or involve a paratenic host, such as the earthworm. Eggs are laid in the bladder and thus are discarded to the environment, where the larvae develop and are ingested by hosts. It is believed that the ingestion of soil and material contaminated with infective larvae derived from the decomposition of dead earthworms may be an alternative pathway for infection of animals. It has been reported in dogs a pre-patent period between 61 and 88 days. In Germany, the prevalence of C. plica in domestic cats was about 6%, with higher incidence in males, whereas in wild cats the prevalence of C. plica and C. feliscati was 7%, also with higher incidence in males. In Brazil, the first report of Capillaria sp. in a domestic cat was only done in 2008. Thus, the purpose of this report is to describe the importance of urinalysis in cases of suspected capillariasis and alert small animals clinicians on the occurrence of this disease as a cause of lower urinary tract disease feline (LUTDF) in the country. Case: It was attended at the Veterinary Hospital of the Universidade Federal de Santa Maria (HVU-UFSM), a male adult feline, mixed breed, presenting urinary incontinence and dysuria. We requested additional tests, including urinalysis, which was observed during the examination of sediment, eggs similars to Capillaria sp. The species was not determined due to the morphological similarity between the eggs of Capillaria plica and Capillaria feliscati. The results of the serum biochemistry were adequate for the feline species, while the CBC showed only eosinophilia. The animal was treated with a single dose of ivermectin (0.2 mg / kg SC), but the animal dead 21 days after initial treatment. Discussion: Cases of Capillaria sp. in the bladder of dogs and cats are rarely reported because, in most cases, clinical signs are not observed due to low parasite load that they show. However, when there are clinical signs can be observed polaciuria, dysuria, cystitis, and inappropriate urination. Infections are usually self limiting, however, in the presence of clinical signs, treatment should be instituted. In the present case, the animal had only urinary incontinence and dysuria. The collection of the urine sample through cystocentesis is indicated in suspected cases of capillariasis, to avoid contamination of urine with feces and eggs of Trichuris sp. what may lead to a misdiagnosis. The urinary sediment is a qualitative test for diagnosis of this infection. Although the infection by the different species of Capillaria be uncommon, it is important that clinicians be alert for refractory cases of LUTDF that dont answer to the conventional treatment, performing urinalysis for possible occurrence of Capillaria sp. eggs in the urinary sediment.(AU)

Transplante de fração total de células mononucleares ou fração vascular estromal associada à membrana celulósica em feridas cutâneas experimentais de coelhos / Total fraction of mononuclear cell or stromal vascular fraction transplant associated with cellulosic membrane in experimental cutaneous wounds in rabbits

A pele apresenta diversas funções importantes para o organismo. A manutenção de sua integridade é fundamental, entre outras, para impedir a penetração de microrganismos e a perda de líquidos essenciais à manutenção da vida. Por estar constantemente exposta ao meio ambiente, a pele é altamente susceptível a traumas que podem acarretar soluções de continuidade. A cicatrização da pele ferida deve ser rápida e diversas alternativas são buscadas, visando à redução do tempo de reparo a fim de garantir cicatriz funcional e esteticamente aceitável. Uma opção cada vez mais viável para reparar tecidos danificados é a terapia celular com células-tronco adultas. Os objetivos deste trabalho consistiram em avaliar o transplante da fração total de células mononucleares (FTCM) da medula óssea (MO) e da fração vascular estromal (FVE) do tecido adiposo (TA), associado ao uso da membrana celulósica. Para realização deste experimento, 20 coelhos foram divididos aleatoriamente em quatro grupos com cinco animais cada. Após a indução da ferida cutânea experimental, o grupo A, não recebeu nenhum tratamento, o grupo B, recebeu apenas membrana celulósica e os grupos C e D, além de receberem a membrana, foram submetidos a transplante autólogo da FTCM, com valor total de células entre 6,92 x 106 a 4,91 x 107 e uma viabilidade de 82 a 97% ou da FVE, com valor total de células entre 9,6 x 105 e 6,5 x 106 e uma viabilidade de 66 a 87%, respectivamente. Ao final do período de avaliação, os três grupos tratados apresentaram diferença estatística significativa da área da ferida em relação ao grupo controle e o grupo que recebeu a FVE do tecido adiposo apresentou o menor tempo de cicatrização da ferida.

The skin presents various important functions to the organism. The maintenance of its integrity is fundamental, among others, to prevent penetration of microorganisms and exit of liquids essential to life maintenance. Due to its constant environment exposure, the skin is highly susceptible to trauma which can result solutions of continuity. The healing of wounded skin should be fast and many alternatives are searched for, aiming to reduce repair time and to guarantee a functional and esthetically acceptable scar. One option to repair injured tissues which is ever more viable is cellular therapy with adult stem cells. The aims of this study consisted in evaluating the transplant of total mononuclear cell fraction (TMCF) from bone marrow (BM) or stromal vascular fraction (SVF) from adipose tissue (AT), associated with the use of cellulose membrane. To carry out this experiment, 20 rabbits were randomly divided in four groups with five animals each. After induction of the experimental cutaneous wound, Group A did not receive any treatment; group B received only cellulose membrane; and groups C and D, in addition to receiving the membrane, were submitted to autologous transplant of TMCF, with total cell value between 6,92 x 106 and 4,91 x 107 and a viability of 82 to 97% or SVF, with total cell value between 9,6 x 105 and 6,5 x 106 and a viability of 66 a 87%, respectively. At the end of the evaluation period, the three treated groups presented significant statistical difference of wound area in relation to the control group, and the group which received SVF from adipose tissue presented the shortest wound healing time.