2,119 results match your criteria: "University of Londrina[Affiliation]"

Drugs such as angiotensin-converting enzyme inhibitors and angiotensin receptor blockers can improve muscle function and exercise capacity, as well as preventing, attenuating or reversing age-related losses in muscle mass, however, the exact mechanisms by which these drugs affect muscle cells, are not yet fully elucidated. Moreover, the potential epigenetic alterations induced in skeletal muscle tissue are also largely unexplored. The aim of this study was to evaluate if enalapril or losartan can change the physical performance and epigenetic profile of skeletal muscle in spontaneously hypertensive rats (SHRs).

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Objectives: This study aimed to investigate the impact of organic, conventional, and stingless honey on gummy candies, focusing on the effect of the cariogenic bacterium, Streptococcus mutans UA159, and total bacterial count in saliva from adolescents.

Methods: Antimicrobial compounds in three honey samples were identified, and the minimum inhibitory concentration against S. mutans UA159 was determined.

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  • The study investigated how yeast cell wall prebiotics and probiotics affect gut health, immune response, and growth in weaned piglets as alternatives to antibiotic growth promoters.
  • Results showed that the feed conversion ratio (FCR) was significantly better in piglets on the yeast treatments compared to those receiving antibiotics, with the best performers being those on the yeast cell wall diet alone.
  • The introduction of probiotics appeared to enhance levels of certain immune markers, while also altering gut microbiota composition, particularly increasing the presence of beneficial Lactobacillus species in the probiotic groups.
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  • - The study analyzed clinical and laboratory findings of multisystem inflammatory syndrome in children (MIS-C) related to COVID-19 in a tertiary children's hospital in Northwest Iran from 2020 to 2022, including 300 pediatric patients following CDC guidelines.
  • - A median age of 3 years was noted, with key affected systems being hematological (87%), gastrointestinal (85%), and respiratory (67%), and common elevated inflammatory markers included D-dimer (83.3%) and ferritin (71.4%).
  • - The outcomes showed that 81.7% of patients were isolated during hospitalization, 18.3% required ICU care, and 1% died; the study emphasizes the need for echocardiography
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Impact of metabolic syndrome on cardiovascular, inflammatory and hematological parameters in female mice subjected to severe sepsis.

Biochem Biophys Res Commun

December 2024

Post-Graduate Program in Experimental Pathology, Department of Immunology, Parasitology and General Pathology. State University of Londrina, Paraná, Brazil; Post-Graduate Program in Physiological Sciences, Department of Physiological Sciences, State University of Londrina, Londrina, Paraná, Brazil. Electronic address:

The aim of the study was to evaluate the effect of metabolic syndrome (MetS) on female Swiss mice subjected to severe polymicrobial sepsis induced by cecal ligation and puncture (CLP). MetS was induced in neonatal Swiss mice by subcutaneous injection of monosodium glutamate (MSG) at 4 mg/g body weight from day 1 to day 5 after birth, while animals in the control group (CTL) were treated with equimolar saline solution at the same volume and period. On the 75th day of life, the CLP model was used to induce severe polymicrobial sepsis.

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MPO interacts with hRSV particles, contributing to the virucidal effects of NETs against clinical and laboratory hRSV isolates.

Int J Biol Macromol

December 2024

São Paulo State University (UNESP), School of Sciences, Humanities and Languages, Assis, Brazil; São Paulo State University (UNESP), Institute of Biosciences, Humanities and Exact Sciences, São José do Rio Preto, SP, Brazil. Electronic address:

Human Respiratory syncytial virus (hRSV) mainly affects immunosuppressed patients requiring hospitalization. No specific treatment is financially accessible, and available vaccines do not cover all risk groups. During hRSV infection, there is a robust neutrophilic influx into the airways.

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This study investigated the combined effects of adding niobium-fluoride (NbF) nanoparticles to a pit-and-fissure sealant. One resin sealant was reinforced with varying amounts of nanoparticles (0.3, 0.

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Metabolic syndrome promotes resistance to aspirin in mitigating bone loss in murine periodontal disease.

Life Sci

December 2024

Department of Immunology, Parasitology and General Pathology, State University of Londrina, Londrina, Paraná, Brazil; Department of Microbiology, State University of Londrina, Londrina, Paraná, Brazil. Electronic address:

Article Synopsis
  • The study investigates how aspirin (ASA) can help prevent bone loss in mice suffering from metabolic syndrome (MetS) and periodontal disease (PD).
  • Newborn mice were induced with MetS and then exposed to PD, with half receiving daily aspirin treatment, while assessing various health and bone loss parameters.
  • Findings showed that while ASA reduced bone loss in non-MetS mice, MetS mice did not respond to the treatment, highlighting the complex interaction between MetS and PD.
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Purpose: The objective of this study was to analyze the impact of interventions with physical exercise on cardiac autonomic modulation of overweight and/or obese children and adolescents.

Method: The present systematic review was registered in PROSPERO. Searches were performed in the MEDLINE, CENTRAL, SciELO, Scopus, CINAHL, SportDiscus, LILACS, EMBASE, and Web of Science databases.

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  • * Recent research has focused on using nanoparticles (NPs), especially those created through "green" methods involving natural organisms and plant extracts, to develop new antimicrobial agents against Listeria.
  • * This review summarizes findings on various antimicrobial NPs and their applications in biopolymer films for food packaging, emphasizing their potential to combat L. monocytogenes and addressing safety issues.
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A feature of Candida tropicalis is its ability to undergo phenotypic switching that can affect antifungal sensitivity and virulence traits. Here, we investigated the effect of switching on alterations at the cellular structure level of C. tropicalis morphotypes and whether exposure to fluconazole (FLC) in vitro could be associated with these alterations in a morphotype-dependent manner.

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Nanomaterials composed of non-nutritive elements are gaining momentum in agriculture. In view of these advances, this study aimed to synthesize and assess the effects of silver (Ag) and cobalt (Co) nanoparticles as seed treatment in maize crops. Nanoparticles were synthesized by coprecipitation and characterized by X-ray diffractometry, transmission electron microscopy, surface area analysis, and Fourier-transform infrared spectroscopy.

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The role of transforming growth factor β in cervical carcinogenesis.

Cytokine Growth Factor Rev

December 2024

Laboratory of Molecular Genetics and Immunology, Department of Immunology, Parasitology and General Pathology, Center of Biological Sciences, State University of Londrina, PR 86057-970, Brazil. Electronic address:

Human papillomavirus (HPV) is involved in virtually all cases of cervical cancer. However, HPV alone is not sufficient to cause malignant development. The effects of chronic inflammation and the interaction of immune components with the microenvironment infected with the high-risk HPV type (HR) may contribute to cancer development.

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Biochar is an effective material for enhancing soil ecosystem services. However, the specific impacts of biochar on microbial indicators, particularly in degraded soils, remain poorly understood. This study aimed to evaluate the effects of biochar produced from cashew residues and sewage sludge, in a highly degraded soil, on microbial indicators.

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The use of C-type natriuretic peptide (CNP) in the interaction with the oocyte and in the temporary postponement of spontaneous meiosis resumption has already been well described. However, its action in pre-implantation developmental-stage embryos is yet to be understood. Thus, our study aimed to detect the presence of the canonical CNP receptor (natriuretic peptide receptor, NPR2) in germinal vesicle (GV)-, metaphase II (MII)-, presumptive zygote (PZ)-, morula (MO)-, and blastocyst (BL)-stage embryos and, later, to observe possible modulations on the embryos when co-cultured with CNP.

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Bioactive Peptides from Corn ( L.) with the Potential to Decrease the Risk of Developing Non-Communicable Chronic Diseases: In Silico Evaluation.

Biology (Basel)

September 2024

Department of Food Science and Technology, State University of Londrina, Celso Garcia Cid Road, PR-445, Km 380, University Campus, Londrina 86057-970, PR, Brazil.

Studies have shown that corn ( L.) proteins, mainly α-zein, have the potential to act on therapeutic targets related to non-communicable chronic diseases, such as high blood pressure and type 2 diabetes. Enzymatic hydrolysis of proteins present in foods can result in a great diversity of peptides with different structures and possible bioactivities.

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Low protein uptake during peripuberty impairs the testis, epididymis, and spermatozoa in pubertal and adult rats.

J Dev Orig Health Dis

October 2024

Laboratory of Toxicology and Metabolic Disturbs of Reproduction, General Biology Department, Biological Sciences Center, State University of Londrina, Londrina, Brazil.

Article Synopsis
  • - The study investigates how a 30-day low-protein diet affects the reproductive development of male rats, focusing on the impacts during critical growth periods.
  • - Results show that the diet led to decreased testicular and epididymal weight, impaired sperm production, and various cellular changes, along with lower testosterone production.
  • - Although some aspects, like testicular and epididymal weight and overall sperm function, improved after a recovery period, permanent histological and morphological issues in sperm cells remained due to the initial protein restriction.
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The SO-generating pads contain different concentrations of sodium metabisulfite, which absorbs water from the grapes' transpiration, releasing SO gas, and there are slow-(SlowSO) and dual (DualSO)-releasing pads (fast release in the first 48 h and slow for up to 60 days). The ultra-fast SO-generating pad (FieldSO) releases the SO quickly for up to 6 h, and it was designed to be used soon after the harvest and until the grapes' packaging. The goal was to study the effect of FieldSO associated with SlowSO and DualSO pads on gray mold incidence and physicochemical and appearance characteristics of 'Italia' table grapes.

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Quality and stability of meat products prepared with chicken fillets affected by white striping myopathy.

J Food Sci Technol

November 2024

Department of Food Science and Technology, State University of Londrina (UEL), Rodovia Celso Garcia Cid, PR-445, Km 380, Postal Box 10.011, Londrina, Paraná 86057-970 Brazil.

This study aimed to evaluate the quality and oxidative stability of chicken burger and mortadella prepared with fillets affected by white striping (WS) myopathy as compared with products prepared with normal fillets (control) There were no differences in pH, L*, or b* between treatments (WS vs. control); however, water holding capacity was higher in control burgers and mortadellas. In burgers, the use of WS fillet led to an increase in lipid content and a reduction in moisture content.

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Article Synopsis
  • Pesticide exposure is linked to an increased risk of diseases like breast cancer (BC), and the UGT2B7 gene variant rs7438135 (G > A) plays a role in detoxifying pesticides and potentially reducing oxidative stress.
  • A study examined 228 women with BC to see how their UGT2B7 variant affected oxidative stress caused by pesticide exposure, measuring specific markers in their plasma.
  • Results indicated that the rs7438135 variant did not provide protection against oxidative stress from pesticides, with significant lipid peroxidation and other stress markers observed in various aggressive tumor conditions.
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Neonatal undernutrition induced by litter size expansion alters testicular parameters in adult rats.

Br J Nutr

October 2024

State University of Londrina, Biological Sciences Centre, Department of General Biology, Laboratory of Toxicology and Metabolic Disorders of Reproduction, Londrina, Brazil.

Article Synopsis
  • Several maternal undernutrition models show that male offspring experience testicular development issues and compromised sperm production.
  • In this study, male pups were raised in either normal or larger litters, and at 90 days old, were assessed for sexual behavior and various tissue analyses.
  • Although the undernourished males had histological changes in their testes, including abnormal tubules and fewer Sertoli cells, their sperm quality and sexual behaviors remained unaffected.
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  • The study investigates the relationship between mandible positioning, preferred chewing side, age, and plantar support in children aged 4-11 years.
  • Using photogrammetry and baropodometry, researchers measured mandibular positions and plantar support in 93 children, finding greater mandibular displacement to the left.
  • Results showed no significant effect of mandible position or chewing side on plantar support, although correlations were noted between age, body mass, height, and plantar surface area.
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