Spatio-temporal flowering patterns in Mediterranean Poaceae. A community study in SW Spain.

This study focused on phenological timing and spatial patterns in 30 Poaceae species flowering in spring in different types of plant cover (scrub, riverbank and pasture). Grass community composition was studied, and the influence of species and plant cover on the start date and duration of flowering was assessed from March to June in both 2014 and 2015. Twenty-nine sampling sites were selected for phenological monitoring using the BBCH scale. Data were subjected to GLMM analyses. Binary discriminant analysis revealed differences in grass community composition as a function of plant cover type; scrub cover comprised a considerably larger number of species than those in riverbank and pasture. Moreover, more species diversity was observed in 2014 than in 2015 with a drier and stressed pre-flowering period. Differences on phenology were also recorded between plant cover types and study years. Species in pasture and riverbank flowered before (113.4 days; 116.1 days) than species in scrub (120.9 days), being these species with shorter flowering length because they are more exposed to the characteristic of the Mediterranean region during the summer. In general, flowering onset occurred later in 2014 (118.2 days) than in 2015 (115.8 days), probably attributable to precipitation occurring during March. On the other hand, spatial autocorrelation within some cover types has been observed, showing spatial patterns exist at a smaller scale. The findings of this study contribute to a better understanding of grass phenology in different environments.

Phylogeography of the invasive weed Hypochaeris radicata (Asteraceae): from Moroccan origin to worldwide introduced populations.

In an attempt to delineate the area of origin and migratory expansion of the highly successful invasive weedy species Hypochaeris radicata, we analysed amplified fragment length polymorphisms from samples taken from 44 populations. Population sampling focused on the central and western Mediterranean area, but also included sites from Northern Spain, Western and Central Europe, Southeast Asia and South America. The six primer combinations applied to 213 individuals generated a total of 517 fragments of which 513 (99.2%) were polymorphic. The neighbour-joining tree presented five clusters and these divisions were supported by the results of Bayesian analyses: plants in the Moroccan, Betic Sierras (Southern Spain), and central Mediterranean clusters are all heterocarpic. The north and central Spanish, southwestern Sierra Morena, and Central European, Asian and South American cluster contain both heterocarpic (southwestern Sierra Morena) and homocarpic populations (all other populations). The Doñana cluster includes two homocarpic populations. Analyses of fragment parameters indicate that the oldest populations of H. radicata are located in Morocco and that the species expanded from this area in the Late Quaternary via at least three migratory routes, the earliest of which seems to have been to the southwestern Iberian Peninsula, with subsequent colonizations to the central Mediterranean area and the Betic Sierras. Homocarpic populations originated in the southwestern Iberian Peninsula and subsequently spread across north and central Spain, Central Europe and worldwide, where they became a highly successful weed.

Differential contribution of frugivores to complex seed dispersal patterns.

Frugivores are highly variable in their contribution to fruit removal in plant populations. However, data are lacking on species-specific variation in two central aspects of seed dispersal, distance of dispersal and probability of dispersal among populations through long-distance transport. We used DNA-based genotyping techniques on Prunus mahaleb seeds dispersed by birds (small- and medium-sized passerines) and carnivorous mammals to infer each seed's source tree, dispersal distance, and the probability of having originated from outside the study population. Small passerines dispersed most seeds short distances (50% dispersed <51 m from source trees) and into covered microhabitats. Mammals and medium-sized birds dispersed seeds long distances (50% of mammals dispersed seeds >495 m, and 50% of medium-sized birds dispersed seeds to >110 m) and mostly into open microhabitats. Thus, dispersal distance and microhabitat of seed deposition were linked through the contrasting behaviors of different frugivores. When the quantitative contribution to fruit removal was accounted for, mammals were responsible for introducing two-thirds of the immigrant seeds into the population, whereas birds accounted for one-third. Our results demonstrate that frugivores differ widely in their effects on seed-mediated gene flow. Despite highly diverse coteries of mutualistic frugivores dispersing seeds, critical long-distance dispersal events might rely on a small subset of large species. Population declines of these key frugivore species may seriously impair seed-mediated gene flow in fragmented landscapes by truncating the long-distance events and collapsing seed arrival to a restricted subset of available microsites.

Population structure of Hypochaeris salzmanniana DC. (Asteraceae), an endemic species to the Atlantic coast on both sides of the Strait of Gibraltar, in relation to Quaternary sea level changes.

To detect potential Pleistocene refugia and colonization routes along the Atlantic coast, we analysed amplified fragment length polymorphisms (AFLPs) in 140 individuals from 14 populations of Hypochaeris salzmanniana (Asteraceae), an annual species endemic to the southwestern European and northwestern African coastal areas. Samples covered the total distributional range of the species, with eight populations in southwestern Spain and six populations in northwestern Morocco. Using nine primer combinations, we obtained 546 fragments in H. salzmanniana and its sister species H. arachnoidea of which 487 (89.2%) were polymorphic. The neighbour-joining tree shows that the populations south of the Loukos river in Morocco are clearly differentiated, having more polymorphic, private, and rare fragments, and higher genetic diversity, than all the other populations. The southernmost populations in Morocco, south of the river Sebou, form a large panmictic population. They are probably the oldest populations that have been relatively unaffected by stochastic processes resulting from Pleistocene glaciations. Northward migration of populations during this period may have resulted in loss of genetic diversity in specific regions, perhaps due to bottlenecks caused by rise in sea level during interglacial periods, and, in some cases, by changes in the breeding system.

Hemorragia digestiva incohercible por metástasis pancreática de cáncer renal / Persistent intestinal bleeding secondary to pancreatic metastasis from renal cell carcinoma

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Gastric pouch carcinoma after gastric bypass for morbid obesity.

The relationship between bariatric surgery and gastric cancer is conjectural. We present a 52-year-old woman with BMI 45 operated initially by a Lap-Band procedure complicated by gastric wall erosion of the band 9 months later. She was re-operated and the band was removed. She subsequently underwent a Roux-en-Y gastric bypass. 5 years after, gastric carcinoma was discovered in the gastric pouch. Because of varied symptoms following bariatric surgery, patients may not present promptly with symptoms related to a gastric carcinoma.

Meningitis por Listeria monocytogenes tras colonoscopia en paciente con infección por VIH y citomegalovirus / Listeria monocytogene' s meningitis in a HIV and CMV patient after colonoscopy

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Fiebre prolongada en paciente con lesiones ocupantes de espacio hepáticas de larga evolución / Fever in a patient with spatial hepatic lesions of large evolution

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[Complications of intestinal transporting of cocaine packets. Study of 215 cases]. / Complicaciones en transportadores intestinales de paquetes con cocaína. Estudio de 215 casos.

BACKGROUND: To analyse clinical manifestations, diagnosis and management in the "body packer syndrome". MATERIAL AND METHODS: We collected 215 patients who had ingested packets of cocaine. RESULTS: Bowel obstruction, haemorrhagic complications and seizures were observed in 5.1, 4.2 and 2.3%, respectively. Toxic manifestations of cocaine occurred in 4 patients. CONCLUSIONS: Radiographs of abdomen are necessary for diagnosis and follow-up. Close surveillance in necessary to identify intestinal obstruction or acute intoxication by cocaine.

[Alcohol withdrawal syndrome: clinical and analytical manifestations and treatment]. / Síndrome de abstinencia alcohólica: manifestaciones clínicas, analíticas y tratamiento.

BACKGROUND: The aim of this study was to analyze clinical manifestations and treatment aspects of alcohol withdrawal syndrome. MATERIAL AND METHODS: A retrospective study of 212 clinical records. RESULTS: The commonest withdrawal effects were tremulousness (68.7%) 7 agitation (67.3%) and hallucinations (46%). Most patients were male. The 64% recognize a period of relative or absolute abstinence less than two days, and a 67.8% have been previous incident of withdrawal syndrome. The commonest complications during hospital stay were rhabdomyolysis (26%). Time of symptoms were three days and mean of hospitalization were 14 days. The treatment used was the correction of fluid and electrolyte imbalance (93%) and B vitamins (98%). In relation to the use of drugs, in 84% of our patients we used benzodiazepines with longer-acting, and clomethiazole in 50% of cases. Mortality were 0.9%. CONCLUSIONS: Patient with alcohol withdrawal syndrome was a male, previously drinker, with a period of abstinence less than two days. In addition to tremulousness and agitation, in our series, we wish to emphasize higher frequency of hallucinations, and the incidence of complications as rhabdomyolysis, despite of such response of treatment is good and mortality is low.

[Cocaine-induced neurological complications]. / Complicaciones neurológicas por cocaína.

Cocaine intake growth is a well-known fact, and that involves the appearance of unknown or forgotten complications. We have wanted to make a checking of neurologic complications due to the intake of this drug, make a special point of the physiopathological mechanisms and stopping at those related to treatment. We also want to contribute with our experience with regard to these processes.