Antonio Rodriguez Perez

Hospital Universitario de Salamanca · APARATO DIGESTIVO

Background: constipation-predominant irritable bowel syndrome (C-IBS) is a prevalent, complex and multifactorial disorder that represents a challenge in terms of diagnosis and therapeutic management. Objective: to evaluate the effectiveness, safety and treatment satisfaction of linaclotide in C-IBS patients. Methods: prospective, single-center...

Introduction: Endoscopic ultrasound-guided biliary drainage (EUS-BD) is an alternative to percutaneous trans-hepatic biliary drainage (PTBD) in cases of failed endoscopic retrograde cholangiopancreatography (ERCP). Methods: This is a retrospective description of six cases of endoscopic ultrasound-guided biliary drainage via choledochoduodenostom...

Background: Helicobacter pylori antibiotic resistance is an increasing problem worldwide. Pylera(®) may be an option as salvage therapy. Aim: To assess the effectiveness, safety, and tolerance of Pylera(®) as a third-line in clinical practice. Materials and methods: This was a multicenter, observational, prospective database study in four Span...

Background and aim: Tumor necrosis factor (TNF) inhibitors have demonstrated efficacy and safety in the treatment Crohn's disease (CD). However, the loss of response over time means that they are usually used sequentially. The aim of this study was to compare treatment persistence with different sequences of TNF inhibitors in patients with active...

Background The impact of prior anti-TNF use on “real-life” outcomes of adalimumab therapy in ulcerative colitis (UC) is not well known. AimTo compare the influence of prior anti-TNF use on the outcomes of adalimumab maintenance treatment in UC patients. We also assessed the effectiveness of adalimumab dose escalation. Methods This retrospective mul...

Objectives: To compare incidence, mortality and epidemiological characteristics of patients diagnosed with colorectal cancer (CRC) in the province of Salamanca over two different periods: 2010-2012 and 2004-2006. Methods: Retrospective observational study. We include all diagnosed cases of CRC according to histopathological criteria from 01/01/2...

Perivascular epithelioid cell tumors (PEComa) are tumors of perivascular epithelioid cells with immunohistochemical features of smooth muscle and melanocytic tumors. The PEComa of the gastrointestinal tract is rare. The treatment is surgical, although there are data that suggest a good response to rapamycin.

The freshwater shrimp genus Atyaephyra de Brito Capello, 1867 is a complex of cryptic species with morphologically overlapping features, which has led to invalid identifications until recently. The genus is distributed around the entire Mediterranean Basin and surrounding areas. In 2009 we used a molecular approach with 16S and Cox1 genes to identi...

A molecular phylogenetic study by Murphy & Austin (2003) showed that Australian represen-tatives of three shrimp genera of the family Palaemonidae (Palaemon, Palaemonetes, and Macro-brachium) do not cluster according to their generic classification. According to their results, the monophyly of these genera is questioned and the generic classificati...

In order to assess the suitability of Atyaephyra desmarestii as a bioindicator of the effects of hypoxic events on temperate freshwater systems, we investigated the respiratory responses of this shrimp to increasing temperatures and progressive hypoxia at two different salinities. This study, based on laboratory measurements, clearly demonstrates t...

The complete larval development of Macropodia czernjawskii (Brandt, 1880), is described and illustrated for the first time. Larvae were reared in the laboratory and development consisted of two zoeal stages and a megalopa. The main difference in the zoeal stages is the absence of lateral spines on the telson furcae, which allow it to be distinguish...

A molecular phylogenetic study by Murphy & Austin (2003) showed that Australian represen-tatives of three shrimp genera of the family Palaemonidae (Palaemon, Palaemonetes, and Macro-brachium) do not cluster according to their generic classification. According to their results, the monophyly of these genera is questioned and the generic classificati...

The larval development of Dugastella valentina consists of two zoeal stages and a decapodid. Larval stages are not free living; the complete larval development takes place in the female's incubation chamber. The two zoeae, the decapodid and first postlarval stages still have a large amount of yolk, which ensures their nutritional independence (leci...

Heretofore, the pinnotherid crab, Afropinnotheres monodi, had been recorded only from African waters. The range is now extended into European waters with discovery of material in the Gulf of Cádiz. Furthermore, early collections of material had occurred only in open water; now three hosts can be assigned, the clams Scrobicularia plana, Ruditapes de...

Autoimmune enteropathy (AIE) is an infrequent cause of malabsorption that is usually associated with the presence of circulating autoantibodies and a predisposition to autoimmune disorders. This disease is more frequent in children.The diagnosis of this disorder is based on five criteria: chronic diarrhea (>6 weeks), malabsorption, specific histolo...

Autoimmune enteropathy (AIE) is an infrequent cause of malabsorption that is usually associated with the presence of circulating autoantibodies and a predisposition to autoimmune disorders. This disease is more frequent in children. The diagnosis of this disorder is based on five criteria: chronic diarrhea (>6 weeks), malabsorption, specific histol...

The gastrointestinal (GI) tract is the main target site of graft-versus-host disease (GVHD). Diagnosis is based on endoscopic and histological findings. Helicobacter pylori (HP) is a Gram-negative spiral bacterium linked to gastritis, peptic ulcer disease, gastric mucosa-associated lymphoid tissue lymphoma, and adenocarcinoma and is frequently obse...

Emphysematous pancreatitis is a severe and rare complication of acute pancreatitis. This entity is diagnosed on clinical grounds and on the basis of the radiologic finding of gas in the retroperitoneum. Infected pancreatic necrosis is potentially lethal, with mortality rates of more than 35%. Surgery is associated with significant morbidity and mor...

The species Atyaephyra desmarestii (Millet, 1831) has a wide geographic distribution in freshwater habitats, rivers and lakes, spanning from North Africa to the Middle East, a large part of Europe and some Mediterranean islands. This wide distribution, together with the disjunct nature of freshwater populations, makes A. desmarestii a candidate tax...

The American Journal of Gastroenterology is published by Nature Publishing Group (NPG) on behalf of the American College of Gastroenterology (ACG). Ranked the #1 clinical journal covering gastroenterology and hepatology*, The American Journal of Gastroenterology (AJG) provides practical and professional support for clinicians dealing with the gastr...

Aging is a chronic oxidation process in which the immune system is involved. Because leukocyte function is a good health marker and longevity predictor, the effects of daily oral administration of N-acetylcysteine (NAC, 600 mg) on several lymphocyte (adherence, chemotaxis, proliferation, natural killer activity) and neutrophil (adherence, chemotaxi...

The American Journal of Gastroenterology is published by Nature Publishing Group (NPG) on behalf of the American College of Gastroenterology (ACG). Ranked the #1 clinical journal covering gastroenterology and hepatology*, The American Journal of Gastroenterology (AJG) provides practical and professional support for clinicians dealing with the gastr...

Introduction We previously demonstrated the ageing-associated decline of certain immune functions, which have been described as markers of health and longevity and confirmed that administration of the antioxidant N-acetylcysteine (NAC), which is a glutathione precursor, improves these functions. Patients and methods Thirty-six randomly selected po...

Self-expanding metal stents (SEMS) are being increasingly used to solve malignant colorectal obstruction (MCRO). Patients can then either undergo scheduled surgery or have the stent left in place as a definitive palliative treatment. The majority of reports on the use of SEMS in MCRO come from single centers; therefore, its use in general endoscopi...

A pesar de que los cuidados parental y parental extendido son comportamientos comunes en crustáceos decápodos (ver Thiel 2000, 2003), los casos de decápodos que transportan a su descendencia en estructuras de su cuerpo durante el desarrollo larval son excepcionales. Hasta la fecha sólo se conocía un caso, el del pinnotherido marino Tunicotheres mos...

The two zoeal and megalopal stages of Porcellanacancrisocialis are described and illustrated from laboratory-reared larvae. At an average temperature of 25°C, Zoea I of P.cancrisocialis lasted seven days before moulting to Zoea II which, in turn, lasted eight days to reach the megalopa. Larval features of P.cancrisocialis are compared with those of...

Presentamos un caso de infección crónica por Strongyloides stercoralis en una mujer de 29 años de edad, natural de Colombia, con 2 años de residencia en España. Presentaba dolor abdominal recurrente y síndrome de malabsorción. El diagnóstico fue obtenido a través de biopsia duodenal con endoscopia digestiva alta. En nuestra paciente se pudo observa...

We report a case of chronic infection by Strongyloides stercoralis in a 29-year-old Colombian woman who had been living in Spain for 2 years. The patient had recurrent abdominal pain and malabsorption syndrome. The diagnosis was made through intestinal biopsy in upper gastrointestinal endoscopy. Transport of the parasite through the lung parenchyma...

The decapod taxocoenosis living in shallow muddy bottoms with the green algae Caulerpa prolifera was studied monthly between February 1994 and January 1996 in the Inner Bay of Cádiz (SW Spain). More than 32,000 specimens belonging to 35 species were collected. Six species were dominant (representing the 85.8% of the total number of specimens), but...

Three ovigerous females of the crab, Aratus pisonii (H. Milne Edwards, 1837) (Sesarmidae) were captured from a coastal lagoon in Mazatlán, Mexico. Larvae were reared in the laboratory from hatching to the megalopa stage. The morphology of the four zoeal stages and the megalopa is described and illustrated. Morphological comparisons are made with pr...

The estuarine panopeid crab Eurypanopeus canalensis Abele and Kim, 1989, is an eastern tropical Pacific species with a known distribution from the southeastern Gulf of California, Mexico, to Panama. Its complete larval development is fully described and illustrated from laboratory-reared material. The four zoeal stages and the megalopa are compared...

The pilumnid crab Pilumnus limosus is known from Gonzaga Bay, Baja California, Mexico, to Zorritos, Paita, Peru. Larvae from a female collected in the intertidal rocky shore in Mazatlán, south-eastern Gulf of California, Mexico, were reared in the laboratory from Zoea I to megalopa. A complete description and illustration of larval features is prov...

The two zoeal and the megalopal stages of Petrolisthes robsonae, are described and illustrated from laboratory-reared larvae. Larval features are compared with those previously described for other species of Petrolisthes in the eastern Pacific. Larvae of P. robsonae exhibit similar but not identical features to those seen in other Petrolisthes spec...

The incidence of polypoidal tumors in the duodenum is scarce and Brunner's gland tumors represent 11% of these proliferations. Brunner's gland polypoid hamartoma or adenoma is a highly infrequent benign polypoid proliferation of Brunner's glands that is usually asymptomatic, although gastrointestinal bleeding or intestinal obstruction may sometimes...

The incidence of polypoidal tumors in the duodenum is scarce and Brunner's gland tumors represent 11% of these proliferations. Brunner's gland polypoid hamartoma or adenoma is a highly infrequent benign polypoid proliferation of Brunner's glands that is usually asymptomatic, although gastrointestinal bleeding or intestinal obstruction may sometimes...

To assess how estuarine (glass-eel and white shrimp) fishing activities may be affecting the recruitrnent of youug stagesof marine fish species to the Guadalquivir Estuary, during two annual cycles (May 1997 to April 1999), the spatio-temporal abuudance of these species throughout the last 50 km of the estuary was estirnated (monthly samples with 1...

The aquatic macrofauna of the Guadalquivir estuary were sampled (1 mm mesh persiana net) at 5 sampling sites located along the entire (except the tidal freshwater region) estuarine gradient of salinity (outer 50 km). A total of 134 fish and macroinvertebrate species was collected but only 62 were considered common or regularly present in the estuar...

The crab genus Brachynotus de Haan, 1833 is restricted to the intertidal and shallow subtidal of the Mediterranean and northeastern Atlantic. It is presently recognized to consist of four species, of which three (B. foresti, B. gemmellari and B. sexdentatus) are endemic to the Mediterranean. The fourth species, B. atlanticus, is found along the Atl...

The complete larval development of Brachynotus sexdentatus (Risso, 1827) was obtained by culture in the laboratory. Five zoeal stages, megalop and first crab are described and illustrated. Larval development from hatching to megalop stage took a minimum of 17 days at 23°C. The morphological characters of the larvae of B. sexdentatus are compared wi...

Zoeal stages of Pachygrapsus marmoratuswere obtained from laboratory culture. The time of development from hatching to the sixth and terminal zoeal stage took 31 days at 25 ± 1 °C. As there are already accounts of the first two stages, this study only describes and illustrates zoeas three to six. Zoeal characters are compared with those in other de...

RESUMEN: La escuela no es todavía un espacio de igualdad, sino que sigue difun-diendo los valores propios de una cultura androcéntrica. Los chicos tienen, por lo general, un concepto mucho más positivo respecto de sí mismos que las chicas aunque, por regla general, éstas obtienen un mayor rendimiento académico, tanto si se evalúa a través de las ca...