458 results match your criteria: "National Institute of Medical Science and Nutrition "Salvador Zubiran"[Affiliation]"

This work presents strong evidence supporting the use of decellularized human iliac arteries combined with adipose tissue-derived stem cells (hASCs) as a promising alternative for vascular tissue engineering, opening the path to future treatments for peripheral artery disease (PAD). PAD is a progressive condition with high rates of amputation and mortality due to ischemic damage and limited graft options. Traditional synthetic grafts often fail due to poor integration, while autologous grafts may be unsuitable for patients with compromised vascular health.

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Design and evaluation of a multi-epitope HIV-1 vaccine based on human parvovirus virus-like particles.

Vaccine

December 2024

Mucosal Immunoogy Laboratory, Biomedicine Research Unit, Faculty of Higher Studies Iztacala, National Autonomous University of Mexico. Avenida de los Barrios 1, Los Reyes Iztacala, Tlalnepantla, Estado de México 54090, Mexico. Electronic address:

The development of a protective HIV vaccine remains a challenge given the high antigenic diversity and mutational rate of the virus, which leads to viral escape and establishment of reservoirs in the host. Modern antigen design can guide immune responses towards conserved sites, consensus sequences or normally subdominant epitopes, thus enabling the development of broadly neutralizing antibodies and polyfunctional lymphocyte responses. Conventional epitope vaccines can often be impaired by low immunogenicity, a limitation that may be overcome by using a carrier system.

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Discontinuation of antiseizure medications (ASMs), primarily prompted by adverse effects, presents a formidable challenge in the management of epilepsy, and impacting up to 25% of patients. This article thoroughly explores the clinical spectrum of cutaneous adverse drug reactions (cADRs) associated with commonly prescribed ASMs. Ranging from mild maculopapular rashes to life-threatening conditions such as Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN), the diverse manifestations are meticulously detailed.

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Autosomal recessive deficiency of the IFNAR1 or IFNAR2 chain of the human type I IFN receptor abolishes cellular responses to IFN-α, -β, and -ω, underlies severe viral diseases, and is globally very rare, except for IFNAR1 and IFNAR2 deficiency in Western Polynesia and the Arctic, respectively. We report 11 human IFNAR1 alleles, the products of which impair but do not abolish responses to IFN-α and -ω without affecting responses to IFN-β. Ten of these alleles are rare in all populations studied, but the remaining allele (P335del) is common in Southern China (minor allele frequency ≈2%).

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Two-flap earlobe rotation for extensive mid-helix defect: a case report of a new modification to an existing technique.

J Surg Case Rep

December 2024

Dermatology, Faculty of Medicine, National Autonomous University of Mexico, Escolar 411A, Copilco Universidad, Coyoacan, 04360, Mexico City, Mexico.

Reconstructing ear defects in very elderly patients is challenging, but one-step procedures are beneficial due to reduced morbidity and fewer hospital visits while maintaining ear size, shape, and symmetry. In 2018, Jaber . introduced a 90° earlobe rotation technique to repair full-thickness auricular defects while preserving the earlobe.

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Background: Induced pluripotent stem cells (iPSCs) offer the potential to generate autologous iPSC-derived islets (iPSC islets), however, remain limited by scalability and product safety.

Methods: Herein, we report stagewise characterization of cells generated following a bioreactor-based differentiation protocol. Cell characteristics were assessed using flow cytometry, quantitative reverse transcription polymerase chain reaction, patch clamping, functional assessment, and in vivo functional and immunohistochemistry evaluation.

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Background: Irritable bowel syndrome symptoms are associated with diverse pathophysiological mechanisms including small intestinal bacterial overgrowth and food intolerance. Small intestinal bacterial overgrowth leads to the decreased activity of several digestive enzymes, including lactase.

Aims: To assess the efficacy of rifaximin-alpha on the symptoms and lactase activity of patients with irritable bowel syndrome without constipation.

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Article Synopsis
  • This study assesses the outcomes of adrenalectomy for pheochromocytoma in obese versus nonobese patients, using data from 46 centers from 2012 to 2022.
  • It finds that while obesity does not significantly increase the rate of complications or comprehensive complication index (CCI), it does lead to a longer hospital stay for patients.
  • Furthermore, minimally invasive surgical techniques, like laparoscopic and robotic surgeries, are associated with less morbidity in obese patients, and a retroperitoneal approach may provide additional benefits.
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Brain reserve in hepatic encephalopathy: Pathways of damage and preventive strategies through lifestyle and therapeutic interventions.

Ann Hepatol

November 2024

Metabolic Unit. National Institute of Medical Sciences and Nutrition Salvador Zubiran, 14080 Mexico City, Mexico; Guest Researcher Hepatology, General Hospital of Mexico, Mexico City, Mexico; Gastroenterology Department, ABC Hospital, Mexico City, Mexico. Electronic address:

Brain reserve is an important concept to understand the variability of damage associated with brain-related diseases and includes the adaptation of cognitive processes to preserve brain function. A good cognitive reserve might delay the onset of clinical manifestations of neurodegenerative diseases as well as hepatic encephalopathy, improving the quality of life in patients with chronic liver diseases. By stimulating activities and maintaining overall health, individuals may be able to enhance their brain's resilience to age-related changes and pathology.

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Exercise training in long COVID: the EXER-COVID trial.

Eur Heart J

November 2024

Navarrabiomed, Hospital Universitario de Navarra (HUN), Universidad Pública de Navarra (UPNA), Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31001 Pamplona, Spain.

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Article Synopsis
  • Acquired hypophosphatemic osteomalacia (AHO) is a rare bone disorder often caused by phosphaturic tumors that lead to low phosphate levels and poor bone mineralization, with tumor-induced osteomalacia (TIO) being the most common culprit.
  • A study reviewed seven cases of AHO in Peruvian patients between 1999 and 2023, revealing significant diagnostic challenges and varying outcomes; some patients improved after tumor removal, while others did not and even faced fatalities.
  • The findings highlight the necessity for careful diagnosis and treatment planning, as the elusive nature of tumors makes it particularly difficult to manage AHO in regions like Peru with limited medical resources.
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Historically, it takes an average of 17 years to move new treatments from clinical evidence to daily practice. Given the highly effective treatments now available to prevent or delay kidney disease onset and progression, this is far too long. The time is now to narrow the gap between what we know and what we do.

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Baseline, Early Changes, and Residual Albuminuria: Post Hoc Analysis of a Randomized Clinical Trial of Dapagliflozin in Chronic Kidney Disease.

Clin J Am Soc Nephrol

December 2024

Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.

Article Synopsis
  • Albuminuria is a significant marker for kidney and cardiovascular problems in chronic kidney disease (CKD), and this study analyzed its impact on health outcomes in CKD patients receiving dapagliflozin or placebo.
  • A post-hoc analysis of the DAPA-CKD trial involved 4,304 patients and found that dapagliflozin significantly decreased urinary albumin-to-creatinine ratio (UACR) after four months, with a 36% reduction in those with diabetes and 21% in those without.
  • The study concluded that greater reductions in albuminuria were linked to lower risks of serious kidney and cardiovascular events, providing evidence for the benefits of dapagliflozin in managing CKD.
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Article Synopsis
  • Chronic kidney disease increases the risk of atherosclerotic cardiovascular disease (ASCVD), partly due to high levels of remnant cholesterol, even in patients treated with statins.
  • A study of over 107,000 individuals indicated that higher remnant cholesterol is linked to increased risks of myocardial infarction and ischemic stroke, especially in those with impaired renal function.
  • The findings highlight that elevated remnant cholesterol contributes significantly to ASCVD risk in both statin users and non-users, meaning that additional strategies may be needed to lower this risk in kidney disease patients.
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Background: Skin cancer is a primary health concern in renal transplant recipients (RTRs). Existing research mainly stems from North America, Europe, and Australia, with limited data from Latin America.

Methods: This 56-year (1967-2023) retrospective cohort study explores skin cancer incidence in Mexican RTRs.

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Impact of Remnant Cholesterol on Cardiovascular Risk in Diabetes.

Curr Diab Rep

December 2024

Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Borgmester Ib Juuls Vej 1, 2730, Herlev, Denmark.

Article Synopsis
  • Individuals with diabetes are at a higher risk of atherosclerotic cardiovascular disease (ASCVD) due to factors like hyperlipidemia and elevated remnant cholesterol, which remains a concern even after lowering LDL cholesterol levels.
  • Recent studies indicate a causal link between high remnant cholesterol and increased ASCVD risk, suggesting it could be a potential target for treatment.
  • However, recent clinical trials on drugs like omega-3 fatty acids and fibrates that aim to lower remnant cholesterol have shown mixed results in preventing ASCVD, highlighting the need for treatments that also decrease apolipoprotein B (apoB) levels for better outcomes.
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Background: Very-low-carbohydrate diets, including ketogenic and carnivore diets, are gaining popularity for the experimental treatment of a wide range of disorders, including inflammatory bowel disease (IBD).

Methods: Participants were recruited through a social media survey. Final inclusion required a histologically confirmed diagnosis of ulcerative colitis (UC) or Crohn's disease that was responsive to treatment with a ketogenic or carnivore diet without medication or with successful medication cessation on the diet.

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Background And Objective: Robotic adrenalectomy (RA) has attracted interest as an alternative to laparoscopic adrenalectomy (LA) for patients with pheochromocytoma, although its beneficial effects are uncertain. Our aim was to compare RA and LA outcomes for these patients.

Methods: Data for patients who underwent RA or LA for pheochromocytoma in 46 international centers between 2012 and 2022 were reviewed.

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Background: Infections have a poor prognosis in inpatients with cirrhosis. We aimed to determine regional variations in infections and their association with clinical outcomes in a global cohort of inpatients with cirrhosis.

Methods: In this prospective cohort study initiated by the CLEARED Consortium, we enrolled adults (aged >18 years) with cirrhosis who were non-electively admitted to 98 hospitals from 26 countries or regions across six continents between Nov 5, 2021, and Dec 10, 2022.

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The developmental origins of healthy and disease (DOHaD) concept has demonstrated a higher rate of chronic diseases in the adult population of individuals whose mothers experienced severe maternal protein restriction (MPR). Using proteomic and in silico analyses, we investigated the lung proteomic profile of young and aged rats exposed to MPR during pregnancy and lactation. Our results demonstrated that MPR lead to structural and immune system pathways changes, and this outcome is coupled with a rise in the PI3k-AKT-mTOR signaling pathway, with increased MMP-2 activity, and CD8 expression in the early life, with long-term effects with aging.

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Article Synopsis
  • The FLOW trial investigated the effects of semaglutide on cardiovascular (CV) events and death in individuals with type 2 diabetes and chronic kidney disease (CKD).
  • Results showed that semaglutide lowered the risk of CV death, non-fatal heart attacks, and strokes by 18%, and overall mortality by 20% across various levels of CKD severity.
  • The beneficial effects of semaglutide were consistent regardless of kidney function, protein levels in urine, or risk classification.
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To determine if fluoride's established negative impact on adult kidney health begins during gestation, an intergenerational model of Wistar rats was exposed to two doses of fluoride (2.5 or 5.0 mg/kg/day via gavage) 20 days before mating and during gestation (20 days).

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