Publications by authors named "Martinez-Ocana J"

In the present study, we evaluated the genetic variability of the internal transcribed spacer (ITS) region and the pyruvate:ferredoxin oxidoreductase () A gene of from female patients and its possible implications in the host-parasite relationship. Phylogenetic and genetics of populations analyses were performed by analyzing sequences of the ITS region and partial A gene of clinical samples with , as previously documented. Alignments of protein sequences and prediction of three-dimensional structure were also performed.

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Blastocystis sp. is a widespread microorganism that colonizes the intestinal tract of several animals, including human beings, while its pathogenic role in humans is still under debate. The objective of the present study was to describe the frequency of Blastocystis sp.

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Blastocystis sp. is a common intestinal microorganism. The α-L-fucosidase (ALFuc) is an enzyme long associated with the colonization of the gut microbiota.

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Extra-enteric infections by Blastocystis spp. have rarely been documented. Here, we report a case of extra-enteric blastocystosis in a patient with minimal cervicitis symptoms.

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Intestinal mucins are the first line of defense against microorganisms. Although knowledge about the mechanisms involved in the establishment of intestinal protozoa is limited, there is evidence that these parasites produce lectin-like molecules and glycosidases, that exert both, constitutive and secretory functions, promoting the establishment of these microorganisms. In the present review, we analyse the main interactions between mucins of the host intestine and the four main protozoan parasites in humans and their implications in intestinal colonization.

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Blastocystis spp is a common intestinal parasite of humans and animals that has been associated to the etiology of irritable bowel syndrome (IBS); however, some studies have not found this association. Furthermore, many biological features of Blastocystis are little known. The objective of present study was to assess the generation times of Blastocystis cultures, from IBS patients and from asymptomatic carriers.

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Background: In Mexico, the initial severe cases of the 2009 influenza pandemic virus A (H1N1) [A(H1N1)pdm09] were detected in early March. The immune mechanisms associated with the severe pneumonia caused by infection with this new virus have not been completely elucidated. Polymorphisms in interleukin genes have previously been associated with susceptibility to infectious diseases due to their influence on cytokine production.

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Introduction: Few studies address the individual prognosis of an elderly patient beginning chronic haemodialysis (HD), despite the fact that doctors must frequently weigh the possible benefits and disadvantages of prescribing this treatment.

Objectives: Evaluate the usefulness of the REIN Registry’s prognosis score and the predictive index for early mortality proposed by the Catalan Registry of Renal Patients (RMRC, Registre de Malalts Renals de Catalunya) in elderly patients beginning HD by comparing indices with observed survival rates.

Methods: We studied patients aged 75 years and older who started and continued HD treatment in our Department between 2004 and 2009.

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Background: Refractory arterial hypertension (RAH) is frequently associated to a non-dipping blood pressure (BP) pattern; this profile has been shown to have a worse clinical prognosis. It is a common clinical practice that patients receive anti-hypertensive medication preferentially in the morning. Non-dipping could be related to the timing of anti-hypertensive drug administration.

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Chinchilla laniger has been reported as an experimental definitive host for Taenia solium; however no information about its suitability and yield of gravid tapeworm proglottids containing viable and infective eggs has been published. In total 55 outbred female chinchillas were infected with 4 cysticerci each; hosts were immunodeppressed with 6 or 8 mg of methyl-prednisolone acetate every 14 days starting the day of infection and their discomfort was followed. Kinetics of coproantigen ELISA or expelled proglottids was used to define the infection status.

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Background: Pregnancy is accompanied by several hemodynamic, biochemical and hematological changes which revert to normal values after labor. The mean values of these parameters have been reported for developed countries, but not for Mexican women. Furthermore, labor constitutes a stress situation, in which these factors may be altered.

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Introduction: The high prevalence of chronic kidney disease (CKD) in the general population has created a need to coordinate specialised nephrology care and primary care. Although several systems have been developed to coordinate this process, published results are scarce and contradictory.

Objective: To present the results of the application of a coordinated programme between nephrology care and primary care through consultations and a system of shared clinical information to facilitate communication and improve the criteria for referring patients.

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Taenia solium life cycle includes humans as definitive hosts and pigs as intermediate hosts. One of the measures to stop the life cycle of this parasite is by vaccination of pigs. In experiments performed in pigs with TSOL18 and TSOL45-1A, two recombinant T.

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Background: The adequate control of phosphataemia is of major importance in end-stage renal disease patients on maintenance dialysis. Recently, lanthanum carbonate (LC) has been added to the phosphate binder armamentarium. To our knowledge, no studies have yet evaluated the usefulness of this drug in uncontrolled hyperphosphataemic patients.

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Background: Peritoneal dialysis (PD) is not frequently used in our setting.

Objective: To analyze the psychological factors involved in the choice of renal replacement therapy (RRT).

Material And Methods: A prospective observational study of stable patients without cognitive or sensory deficits who were informed about RRT from January 2004 to July 2006 and agreed to participate.

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Taenia solium and T. saginata are zoonotic tapeworms of substantial medical and economic importance. Although human taeniasis is widely recognised as an endemic problem in Mexico, its presence in the United States is poorly understood.

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According to previous reviews, hemoperitoneum episodes appear in 6.1-8.4% of the peritoneal dialysis patients, and they are severe in a 20% of them.

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We report a case of a 49 year old man, diagnosed soon after the outcome of casual proteinuria, of AA-type amyloidosis in relation to small and medium vessel cutaneous vasculitis without systemic involvement. This combination is a rare entity and only two cases of cutaneous hypersensibility vasculitis complicated with AA-type amyloidosis had been reported. We describe the results of the use of several immunosuppressive drugs during four years follow up with temporally total remission of the disease.

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Background And Objective: Knowledge of the life-sustaining treatment preferences of the dialysis patients would be extremely helpful to substitute decision-makers and nephrologists in deciding whether to continue or stop a treatment. The population of the Mediterranean countries show this opinion with less frequency. The objective of this study is: 1) the knowledge of the patient's view for the advance directives; it may increase the likelihood to get the correct decisions of the staff when complications break the normal course of chronic dialysis, and 2) the statement of the advance directives.

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Background: The incidence of chronic renal failure increase with the age. The selection of patient to dialysis has been increasing in spite of the high comorbidity. Moreover, in our clinical practice the aged patient is not contraindicated to dialysis.

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Although drug induced interstitial nephritis is a relatively common cause of renal failure,granulomatous forms remain a rare condition. The development of a chronic granulomatous interstitial nephritis due to allopurinol is exceptional, only three cases have been described previously. We report on a patient who presented a granulomatous interstitial nephritis after 10 years of allopurinol administration (300 mg/day).

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Background: Timely referral, preparation and initiation of dialysis remain problematic issues. The purpose of this study is to analyse the effect of chronic renal disease care and education on the mode of dialysis start (planned vs non-planned) and on the modality of renal replacement therapy (RRT).

Methods: A total of 1504 patients from 35 hospitals started RRT in 2003.

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