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Biomedical subjects

J A Cuesta

Publications and source records attributed to J A Cuesta.

4 recordsLinked to original sources
PubMed2005

[Laparoscopic surgery in urology].

At the present time minimally invasive surgery is present in all the standards of quality of a surgical service. Laparoscopic surgery, the basis of this minimally invasive surgery, is revolutionizing the teaching and handling of many surgical pathologies. In the urological sphere, although with a delay of 5 years with respect to neighbouring countries, laparoscopy has become established as a prevalent technique in many processes of the urinary-genital apparatus. At present it is the chosen technique for the surgical treatment of the suprarenal, and it is rapidly becoming established in different pathologies such as renal tumours, prostate tumours, staging in neoplastic diseases of the testicles, benign surgical pathology and in reconstructive surgery. Since 1995, the Urology Service at the Hospital de Navarra has been a pioneer in the employment of this type of technique, and, since 1998, it has been a pioneer of so-called advanced laparoscopic surgery, in which it is a national reference point in some of the procedures, such as laparoscopic adrenalectomy. At present, all of the laparoscopic procedures are incorporated in the service, with a learning curve that has been surpassed. All of this has made it possible to improve patient care, to obtain a reduction in postoperative pain and in length of hospital stay, and a rapid return to labour activity with oncological results that can be equivalent on those of open surgery.

Adrenalectomy↗
PubMed2000

Molecular phylogeny, taxonomy, and evolution of nonmarine lineages within the American grapsoid crabs (Crustacea: brachyura).

Grapsoid crabs are best known from the marine intertidal and supratidal. However, some species also inhabit shallow subtidal and freshwater habitats. In the tropics and subtropics, their distribution even includes mountain streams and tree tops. At present, the Grapsoidea consists of the families Grapsidae, Gecarcinidae, and Mictyridae, the first being subdivided into four subfamilies (Grapsinae, Plagusiinae, Sesarminae, and Varuninae). To help resolve phylogenetic relationships among these highly adaptive crabs, portions of the mitochondrial genome corresponding to the 16S rRNA gene were sequenced for all grapsoid genera occurring in America. The resulting phylogeny confirms most of the present grapsid subfamilies but suggests reclassification of some of the genera and recognition of new taxonomic units. The two American gecarcinid genera might not represent a sister group to the Grapsidae but rather appear to have evolved within the latter. Colonization of inland habitats evolved in several lineages of the grapsoids, resulting in various forms of nonmarine life and different degrees of independence from the sea.

Animals↗
PubMed1999

Initial effects of the toxic waste spill (Aznalcóllar mine accident) on the aquatic macrofauna of the Guadalquivir Estuary.

The initial effects of the toxic waste spill in April 1998 at the Aznalcóllar mine (SW Spain) on the nektonic community of the Guadalquivir Estuary were examined at three sampling sites using univariate and multivariate techniques. Since studied communities showed a considerable seasonal trend, only seasonally homogenous periods were compared to analyse effects of the spill: May-August 1997 (before spill) and May-August 1998 (after spill). Results of both techniques (two-way nested ANOVA and ANOSIM tests, P > 0.05) indicated that there was no significant difference between the nektonic community of the estuary before and after the spill (monthly number of species, abundance, biomass and similarity among samples). Conversely, an unusually high density was observed at the outer sampling site immediately after the spill for species typical of more stagnant estuarine habitats. This feature seems to indicate that the fauna in the estuarine area through which the untreated water penetrated into the main course may have been disturbed. Results also suggest that this initial sudden input of fresh water to the estuary could have enhanced the effects of an increased river flow (a drop in the salinity). Nevertheless, longer temporal series of data, especially for permanent estuarine inhabitants, are recommended before conclusions can be drawn on the effects of the toxic waste spill on estuarine communities.

Accidents, Occupational↗