119,223 results match your criteria: "Argentina; Desert Samaritan Medical Center[Affiliation]"

The specific pathogeneses of schizophrenia (SCZ) remain an enigma despite extensive research that has implicated both genetic and environmental factors. Recent revelations that dysregulated immune system caused by glial cell overactivation result in neuroinflammation, a key player in neurodegenerative as well as neuropsychiatric disorders including SCZ are providing novel clues on potential therapeutic interventions. Here, we review the roles of glial cells (Dr.

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Mineral, Vitamin and Phytonutrients Content in Different Andean Potato Varieties Reintroduced in the North West Region, Argentina (NOA).

Plant Foods Hum Nutr

January 2025

Centro Interdisciplinario de Investigaciones en Tecnologías y Desarrollo Social para el NOA (CIITED), Facultad de Ingeniería, Universidad Nacional de Jujuy and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Jujuy, Argentina.

The mineral content, vitamin C, and chlorogenic acid were determined in 44 genotypes of Andean potatoes reintroduced in the Quebrada de Humahuaca, Jujuy, Argentina. This initiative aims to promote biodiversity and support local producers by determining the nutritional and functional properties of these genotypes. The genotypes from a collection in the Germplasm Bank of INTA Balcarce, were planted in sandy clay loam soils and harvested manually.

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Narrative review of long-standing groin pain in athletes. Retrospective analysis of over 12 000 patients.

Hernia

January 2025

Centro de Patología Herniaria Argentina, Cerviño 4449, 1425, Buenos Aires, Argentina.

Purpose: This article critically examines long-standing groin pain (LSGP) in physically active adults related to sports overload by analyzing terminology, pathophysiology, and treatment.

Method: This review is based on data from over 10,000 patients managed through a multidisciplinary algorithm. (LSGP) has been variably labeled, using terms that have led to inconsistencies in understanding its origin and management.

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Safety and immunogenicity of Ad26.COV2.S in adolescents: Phase 2 randomized clinical trial.

Hum Vaccin Immunother

December 2025

Crucell Integration, Janssen Research and Development, Beerse, Belgium.

We conducted a randomized, Phase 2 trial to assess the safety and humoral immunogenicity of reduced doses/dose volume of the standard dose of Ad26.COV2.S COVID-19 vaccine (5 × 10 viral particles [vp]) in healthy adolescents aged 12-17 years.

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Genomic analysis reveals hidden species diversity in Fabricius (Lepidoptera: Riodinidae).

Insecta mundi

November 2024

Departments of Biophysics and Biochemistry, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX, 75390-9050 USA.

Genomic analysis of [Fabricius], 1807 (Lepidoptera: Riodinidae Grote, 1895) reveals species richness higher than anticipated. As a result, one subgenus, 22 species, and one subspecies are proposed as new (type species or type localities in parenthesis): Grishin, ( Prittwitz, 1865), () Grishin, (Peru: Rio Pachitea, Monte Alegre), () Grishin, (Guyana: Cuyuni-Mazaruni), () Grishin, (Brazil: Santa Catarina), () Grishin, (Panama: Darién), () Grishin, (Ecuador: Santo Domingo), () Grishin, (Peru: Cuzco), () Grishin, (Panama: Chiriquí), () Grishin, (Mexico: Tamaulipas), () Grishin, (Mexico: Nuevo León), () Grishin, (Argentina: Salta), () Grishin, (Peru: Piura), () Grishin, (Bolivia: La Paz), () Grishin, (Mexico: Sonora), () Grishin, (Peru: Madre de Dios), () Grishin, (Bolivia: La Paz), () Grishin, (Mexico: Chiapas), () Grishin, (Panama: Darién), () Grishin, (Panama: Darién), () Grishin, (Panama: Darién), () Grishin, (Panama: Panamá), () Grishin, (Peru: Cuzco), () Grishin, (Brazil: São Paulo), and () Grishin, (Brazil: Paraná). The following five taxa are (not subspecies): () Schaus, 1928, (not () (Linnaeus, 1767)), () Stichel, 1910, (not () Westwood, 1851), () Stichel, 1929, (not () Godman and Salvin, 1886), () R.

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The James Webb Space Telescope has discovered a surprising population of bright galaxies in the very early Universe (≲500 Myr after the Big Bang) that is hard to explain with conventional galaxy-formation models and whose physical properties are not fully understood. Insight into their internal physics is best captured through nebular lines, but at these early epochs, the brightest of these spectral features are redshifted into the mid-infrared and remain elusive. Using the mid-infrared instrument onboard the James Webb Space Telescope, here we present a detection of Hα and doubly ionized oxygen ([O iii] 4959,5007 Å) from the bright, ultra-high-redshift galaxy candidate GHZ2/GLASS-z12.

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Methodological study on coal-based microbial modification of mineral black clay to overcome plant growth challenges on open-pit mine dumps in cold regions.

MethodsX

June 2025

CUMT-UCASAL Joint Research Center for Biomining and Soil Ecological Restoration, State Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology, Xuzhou, Jiangsu province, 221116, PR China.

A critical challenge in ecological restoration of open-pit mine dumps in cold regions with limited topsoil resources is how to rapidly mitigate the plant growth-inhibitory effects of mineral black clay, thereby converting it into arable soil. Leveraging the high degradation capacity of coal seam-associated microorganisms on fossil carbon materials, combined with soil conditioning techniques, this study developed a microbial-based approach for modifying black clay. Seed germination experiments informed both laboratory and field trial designs.

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Spontaneous intoxication by was diagnosed in a flock of 300 sheep in Jujuy province, northwestern Argentina, that grazed an area heavily invaded by this plant. The main clinical signs were intention tremors, ataxia, and progressive loss of condition. Autopsy of 2 affected animals revealed loss of body condition.

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Background: Bed bugs are blood-feeders that rapidly proliferate into large indoor infestations. Their bites can cause allergies, secondary infections and psychological stress, among other problems. Although several tactics for their management have been used, bed bugs continue to spread worldwide wherever humans reside.

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Prokaryotic heme biosynthesis in Gram-positive bacteria follows the coproporphyrin-dependent heme biosynthesis pathway. The last step in this pathway is catalyzed by the enzyme coproheme decarboxylase, which oxidatively transforms two propionate groups into vinyl groups yielding heme b. The catalytic reaction cycle of coproheme decarboxylases exhibits four different states: the apo-form, the substrate (coproheme)-bound form, a transient three-propionate intermediate form (monovinyl, monopropionate deuteroheme; MMD), and the product (heme b)-bound form.

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Distribution of the kisspeptin system and its relation with gonadotropin-releasing hormone in the hypothalamus.

Vitam Horm

January 2025

Centro de Estudios Biomédicos Básicos, Aplicados y Desarrollo (CEBBAD), Universidad Maimónides, Ciudad Autónoma de Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires, Argentina. Electronic address:

Kisspeptin (KISS1), originally catalogued as metastin because of its capacity as a metastasis suppressor in human melanoma and breast cancer, is now recognized as the major puberty gatekeeper and gonadotropin-releasing hormone (GnRH) neuroendocrine system modulator. It is a member of the family of RFamide-related peptides that also includes the neuropeptide FF group, the gonadotropin-inhibitory hormone, the prolactin-releasing peptide, and the 26RFa peptides. The KISS1 precursor peptide is processed into a family of peptides known as kisspeptins.

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Melatonin, modulation of hypothalamic activity, and reproduction.

Vitam Horm

January 2025

Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires, Argentina; Centro de Estudios Biomédicos Básicos, Aplicados y Desarrollo (CEBBAD), Universidad Maimónides, Ciudad Autónoma de Buenos Aires, Argentina. Electronic address:

Light is the most reliable environmental cue allowing animals to breed successfully when conditions are optimal. In seasonal breeders, photoperiod (length of daylight) information is sensed by the eyes and transmitted to the suprachiasmatic nucleus, the master clock region located in the hypothalamus. This structure has a 24-h firing rhythm involving a cycle of clock protein synthesis and degradation, and provides the timing to synchronize the synthesis and release of melatonin, the chemical signal that transduces the photoperiod information.

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Aims: Metformin has shown beneficial effects on reproduction in women. However, its use during pregnancy remains controversial, as metformin can cross the placenta. Most studies have focused on the metabolic impact on the offspring of treated mothers, with limited information regarding its reproductive effects.

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In middle-aged (MA) female rats, we have demonstrated that intrahypothalamic gene therapy for insulin-like growth factor-I (IGF-I) extends the regular cyclicity of the animals beyond 10 months (the age at which MA rats stop ovulating). Here, we implemented long-term OSKM gene therapy in the hypothalamus of young female rats. The main goal was to extend fertility in the treated animals.

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Stress and telomere length in leukocytes: Investigating the role of GABRA6 gene polymorphism and cortisol.

Psychoneuroendocrinology

January 2025

Department of Experimental Clinical and Health Psychology, Ghent University, Ghent, Belgium. Electronic address:

Telomere length (TL) is considered a biomarker of aging, and short TL in leukocytes is related to age and stress-related health problems. Cumulative lifetime stress exposure has also been associated with shorter TL and age-related health problems, but the mechanisms are not well understood. We tested in 108 individuals whether shorter TL in leukocytes is observed in individuals with the GABRA6 TT genotype, which has been associated with dysregulation of hypothalamic-pituitary-adrenal axis activity (the main biological stress system) compared to the CC genotype.

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Oral health-related quality of life in primary Sjögren's Syndrome.

Med Oral Patol Oral Cir Bucal

January 2025

465 Jose Marmol St, Zip Code 1236 Buenos Aires City, Argentina

Background: Primary Sjögren Syndrome (pSS) is an autoimmune disease that usually affects salivary glands. Research about the impact of oral health in quality of life of patients with pSS is scarce.

Objectives: to describe the characteristics of oral involvement in patients with pSS; To assess quality of life related to oral health (QOL-OH); to determine association between QOL-OH and saliva production, disease activity, and damage.

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Point-of-care ultrasound in the diagnosis of hepatic gas gangrene.

J Ultrasound

January 2025

Argentinian Critical Care Ultrasonography Association (ASARUC), Buenos Aires, Argentina.

Hepatic gas gangrene (HGG) is a rare but life-threatening condition typically caused by anaerobic bacteria such as Clostridium perfringens, though Gram-negative bacteria like Escherichia coli and Klebsiella species have also been implicated. Traditionally diagnosed via computed tomography (CT), point-of-care ultrasound (POCUS) has emerged as a valuable tool in critical care settings for its non-invasive, bedside utility. We report the case of a 51-year-old female with choledochal syndrome secondary to cholangiocarcinoma who developed HGG following left extended hepatectomy and biliary reconstruction.

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Proteomic analysis of Trichoderma harzianum secretome and their role in the biosynthesis of zinc/iron oxide nanoparticles.

Sci Rep

January 2025

Instituto de Investigaciones en Biodiversidad y Biotecnología (INBIOTEC-CONICET), Fundación para Investigaciones Biológicas Aplicadas (FIBA), Mar del Plata, 7600, Argentina.

The fungal green synthesis of nanoparticles (NPs) has gained great interest since it is a cost-effective and easy handling method. The process is simple because fungi secrete metabolites and proteins capable of reducing metal salts in aqueous solution, however the mechanism remains largely unknown. The aim of this study was to analyze the secretome of a Trichoderma harzianum strain during the mycobiosynthesis process of zinc and iron nanoparticles.

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Do drug-eluting stents increase non-cardiac mortality?

Can J Cardiol

January 2025

Cardiocentro Ticino Institute, Ente Ospedaliero Cantonale (EOC), CH-6900, Lugano, Switzerland; The Faculty of Biomedical Sciences, University of Italian Switzerland (USI), Lugano, Switzerland; University of Bern, Bern, Switzerland. Electronic address:

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Current level, sources, and risk of human exposure to PAHs, PBDEs and PCBs in South American outdoor air: A critical review.

Environ Res

January 2025

Institute of Science and Technology, São Paulo State University (UNESP), Av. Três de Março, 511, Alto da Boa Vista, 18087-180 Sorocaba, SP, Brazil. Electronic address:

This study provides comprehensive overview of the current level, sources and human exposure risk to hazardous polycyclic aromatic hydrocarbons (PAHs), polybrominated diphenyl ethers (PBDEs), and polychlorinated biphenyls (PCBs) in South American outdoor air. Research documents were obtainable for only 6 countries within the target period (2014 - 2024). For all contaminants, urban concentrations exceeded that of rural/remote locations.

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Background: Evidence from preclinical studies suggests that IL-6 signalling has the potential to modulate immunopathogenic mechanisms upstream of autoantibody effector mechanisms in patients with generalised myasthenia gravis. We aimed to assess the safety and efficacy of satralizumab, a humanised monoclonal antibody targeting the IL-6 receptor, in patients with generalised myasthenia gravis.

Methods: LUMINESCE was a randomised, double-blind, placebo-controlled, multicentre, phase 3 study at 105 sites, including hospitals and clinics, globally.

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