There are about 5012 clinical studies being (or have been) conducted in Mexico. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
End-stage renal disease (ESRD) is a world public health problem, with high morbidity and mortality. Cardiovascular disease is the main cause of mortality in ESRD; uremic toxin retention and inflammation are considered non-traditional risk factors, as they have an active role in atherosclerosis and vascular calcification pathogenesis in dialysis patients. Uremic toxins may be generated by internal protein metabolism, however, some toxins that can't be efficiently eliminated by dialysis such as indoxyl sulphate and p-cresyl sulphate (protein bound toxins), are generated by the microbial metabolism in the large intestine by proteolytic bacteria, and may diffuse easily through the intestinal lumen, as a leaky gut characterizes kidney disease. The gut has been recognized as a potential source of inflammation in ESRD patients; accumulation of nitrogen compounds, presence of gastrointestinal symptoms, dietary changes and multiple drugs and supplements use, stimulates microbiota alterations as bacterial overgrowth and translocation. These phenomena, may active the immune system, promoting local and systemic inflammation, which in turn has negative effects increasing endothelial dysfunction, muscle catabolism, insulin and erythropoietin resistance, and decreases appetite. Some methods have been proposed to decrease inflammation and uremic toxin accumulation, as more efficient dialysis and anti-inflammatory drugs; however, some of them have limited efficacy and high cost. Nutritional treatments focused on modifying intestinal environment, as pre- and probiotics have promising effects by altering production and absorption of uremic toxins and decreasing inflammation; nevertheless, there is scarce information regarding its use and their role in ESRD, particularly in peritoneal dialysis, which is a widely used therapy in México. Furthermore, there is no clinical study comparing the effectiveness of prebiotics, probiotics, and symbiotics on serum concentrations of uremic toxins and inflammation in ESRD patients. It is possible that the administration of a nutritional supplement of probiotics and/or prebiotics decreases the serum concentrations of uremic toxins and inflammation markers in ESRD patients on automated peritoneal dialysis compared to placebo.
A randomized, placebo-controlled, double-blind clinical trial of effect of allopurinol or febuxostat to prevent contrast induced acute kidney injury (CI-AKI)
Tranexamic acid has been used for treating melasma due to its effect on decreasing the activity of tyrosinase and melanogenesis. This 3-arm clinical trial will asess the efficacy and safety of oral and topical tranexamic acid as monotherapy compared with topical hydroquinone for 12 weeks in adults with melasma. The primary outcome will be the percentage of reduction at 12-week period of mMASI and melanin index. The incidence of adverse effects will be reported at weeks 4, 8 and 12.
The L-carnitine has demonstrated effects in the treatment of obesity mainly promoting the fat degradation during exercise.
The increase in the prevalence of diabetes mellitus (DM) is one of the greatest public health challenges worldwide. Epidemiological studies have shown that DM is the leading cause of chronic kidney disease (CKD) in patients initiating renal replacement therapy. In our country, diabetes accounts for about 60% of all incidents of dialysis. On the other hand, CKD is currently considered a noxious disease because patients not only have the likelihood of progression to end-stage renal disease (ESRD), but because these renal alterations are associated with an increased risk of cardiovascular complications and premature death for the same cause. Most studies have focused on traditional risk factors (poor diet, physical inactivity and obesity) for the development and progression of renal damage, and less information exists on non-traditional factors such as oxidative stress and mainly, the low antioxidant response that characterizes both DM and nephropathy. In addition, there is a great variation in the susceptibility to and progression of kidney disease between different populations that is not explained by the presence of traditional factors and that could be triggered by genetic variations and its interaction with other components related to the environment and lifestyle. Fortunately, there is sufficient scientific evidence that early detection and modification of negative lifestyle factors can not only delay or halt the progression of the renal function decline to ESRD but can also significantly reduce the incidence of cardiovascular disease leading to premature death in most of these patients. Therefore, it is suggested that this risk may be determined by the interaction of lifestyle factors with the presence of susceptibility alleles, which may vary from one population to another. It is now known that hyperglycemia causes a state of oxidative stress and inflammation that can be counteracted by diet supplementation with some natural antioxidants such as curcumin. It has been shown that this molecule has multiple pharmacological properties: antioxidant, anti-inflammatory, cardioprotective, renoprotective, among others. In clinical trials a positive effect of curcumin has been seen in the treatment of diabetes and its complications. This has generated a relative optimism in the search for new curcumin treatment targets where oxidative stress is of great relevance, as is the case with CKD. However, there are still doubts about its efficacy as an adjuvant in the prevention of CKD. Additionally, the role played by interindividual variability in genes involved in the mechanism of action of curcumin is still incipient, more studies in this knowledge area are necessary.
Several reports have examined Programmed Death 1 (PD-1) expression on tumor-infiltrating T-cells, and its correlation with prognosis has been discussed. However, Programmed Death 1 (PD1)/Programmed Death Ligand 1 (PDL1) expression on the peripheral blood T-cells of cancer patients, particularly in those with lung cancer, has not been sufficiently studied. The purpose of this study is evaluate the expression of PD1 and PDL1 in subpopulations of peripheral blood and tumor cells patients with lung cancer non-small cell (NSCLC), associating with clinicopathological features of the patients studied.
The purpose of this study is to assess the effectiveness, safety, and acceptability of home-administered medical abortion at gestational age of 8 to ≤9 weeks versus >9 to ≤12 weeks among a cohort of women in Mexico City.
The multiple breath washout (MBW) is one of pulmonary function test that displays flow and gas concentration plotted against time, and shows an exponential decay in end-tidal gas concentration (washout curve). A number of of indices to describe the washout curve have been proposed, the most commonly reported is the Lung Clearance Index (LCI). This is a simple measure of ventilation heterogeneity derived from MBW, that can be used after challenge with a short action bronchodilator and in response to inhaled steroids, both in the conductive airways as acinar. Patients with moderate and severe asthma are characterized by an abnormality in both, conductive and the acinar airway. Therefore the following research question could be: what are the abnormalities in the heterogeneity of ventilation in children with mild and moderate asthma, with respect to the healthy population measured by MBW, and whether these alterations persist after challenge with inhaled steroids and B2 agonists short-acting.
Bronchiolitis is one of the main reasons for consultation in primary care and emergency services, as well as the leading cause of hospitalization for lower respiratory tract infection in children under two years. There is still no consensus on the medical management of the disease, in clinical practice there is wide variability in the treatment with inhaled drugs and / or oral bronchodilators, steroids, antihistamines despite the viral etiology of the disease, which results in increased morbidity and a major economic benefit for all health services. Several studies are in relation to the management of bronchiolitis, one of which was made during 2014 in the Naval Hospital of High Specialty which included 90 participants comparing 3 treatment. The treatments administered were: dexamethasone and epinephrine (Levogira) (ED), hypertonic saline 3% (SSH 3%)and saline 0.9% ( SS 0.9%), finding that the handling of ED and SSH 3% had lower rates of hospital admissions compared to the symptomatic management of SS 0.9%. Although the superiority of SSH3% and ED in relation to the use of SS 0.9% was demonstrated, it was not possible to establish difference statistically significant between them. Why it was considered necessary to continue the study focused on determining the difference in the effectiveness of ED and SSH 3%. Therefore, the purpose of this investigation is to determine whether there is a difference between the use of dexamethasone and epinephrine versus hypertonic saline (3%).
Basal cell carcinoma (BCC) is the most frequent neoplasia worldwide. There are more than 30 histopathologic subtypes, however the nodular subtype is the most common. Pigmented varieties are common in darker skin types, therefore in our country. Previous studies have shown an increase number and size of melanocytes. Melanogenesis were increased at the expense of hyperfunctioning melanocytes as well. The aim of the study was to describe the characteristics of melanocytes in pigmented and non-pigmented variants of basal cell carcinoma.