441 results match your criteria: "Lutheran University of Brazil[Affiliation]"

Cultured mesenchymal stromal cells are among the most used cells in clinical trials. Currently, their potential benefits include provision of mature cell types through differentiation, and secretion of various types of paracrine signaling molecules. Even though research on these cells has spanned some decades now, surprisingly, their therapeutic potential has not been fully translated into clinical practice yet, which calls for further understanding of their intrinsic nature and modes of action.

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The aim of the present study is to report a case of periodontal Ehlers-Danlos syndrome (pEDS) in early childhood. A 3-year-old child, complaining of severe tooth mobility, gingival bleeding, and early loss of deciduous teeth sought the dental clinics. The patient was diagnosed with pEDS, and no other systematic health impairments were diagnosed.

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Exposure of tobacco workers handling dried tobacco leaves has been linked to an increased risk of toxicity and respiratory illness due to the presence of nicotine and other chemicals. This study aimed to evaluate the DNA damage caused by the exposure of tobacco growers during the dry leaf classification process and the relation to cellular mechanisms. A total of 86 individuals participated in the study, divided into a group exposed to dry tobacco (n = 44) and a control group (n = 42).

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Relapsing-remitting multiple sclerosis (RRMS) is the most common clinical course of multiple sclerosis (MS), characterized by a chronic inflammatory state and elevated levels of oxidative markers. Food supplements with potential anti-inflammatory, antioxidant and neuroprotective effects have been tested as possible adjuvants in the treatment of MS. In this sense, this pilot study was carried out with the aim of verifying whether a minimum daily dose of a guarana, selenium and l-carnitine (GSC) based multi supplement, mixed in cappuccino-type coffee, administered for 12 weeks to 28 patients with RRMS could differentially modulate oxidative blood markers (lipoperoxidation, protein carbonylation and DNA oxidation) and inflammatory blood markers (protein levels of cytokines IL-1β, IL-6, TNF-α, IFN-γ, IL-10, gene expression of these cytokines, and NLRP3 and CASP-1 molecules, and C-reactive protein levels).

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Geniposide and asperuloside alter the COX-2 and GluN2B receptor expression after pilocarpine-induced seizures in mice.

Naunyn Schmiedebergs Arch Pharmacol

May 2023

Laboratory of Neuropharmacology and Preclinical Toxicology, Institute of Basic Health Sciences, Federal University of Rio Grande Do Sul, Porto Alegre, 90050-170, Brazil.

Asperuloside (ASP) and geniposide (GP) are iridoids that have shown various biological properties, such as reduction of inflammation, oxidative stress, and neuroprotection. The aim of this study was to investigate the mechanism of action of ASP and GP through the experimental model of pilocarpine-induced seizures. Mice were treated daily with saline, valproic acid (VPA), GP (5, 25, or 50 mg/kg), or ASP (20 or 40 mg/kg) for 8 days.

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Protective effect of Hovenia dulcis Thunb. leaf extracts against ethanol-induced DNA damage in SH-SY5Y cells.

J Ethnopharmacol

March 2023

Laboratory of Genetic Toxicology, Postgraduate Program in Cellular and Molecular Biology Applied to Health (PPGBioSaúde), Lutheran University of Brazil (ULBRA), Laboratory of Genetic Toxicology, Av. Farroupilha, 8001, 92425-900, Canoas, RS, Brazil; Laboratory of Genetic Toxicology, Postgraduate Program in Health and Human Development (PPGSDH), La Salle University (UniLaSalle), Av. Victor Barreto, 2288, 92010-000, Canoas, RS, Brazil. Electronic address:

Ethnopharmacological Relevance: Hovenia dulcis Thunb. has been used as a medicinal herb for the treatment of hepatic diseases and alcohol intoxication.

Aim Of The Study: The genotoxic effect and the antigenotoxic potential of ethanolic extract of H.

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Objectives: The aim of this study was to evaluate, using echocardiography, the effects of oral administration of a single dose of gabapentin on the physiologic variables (heart rate [HR], respiratory rate [RR] and systolic blood pressure [SBP]) and systolic and diastolic cardiac function of healthy cats.

Methods: This was a prospective, randomized and blinded study with 40 healthy cats aged between 6 months and 2 years. The cats' health status was assessed on the first appointment (T1) when they underwent a physical examination, complete blood count, biochemical profile, assessment of physiologic variables and echocardiogram.

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Cyto-genotoxicity of crystalline and amorphous niobium (V) oxide nanoparticles in CHO-K1 cells.

Toxicol Res (Camb)

October 2022

Laboratory of Genetic Toxicity and Cellular Toxic-Genetics Analysis, Graduate Program in Molecular and Cellular Biology Applied to Health, Lutheran University of Brazil (ULBRA), Avenida Farroupilha, 8001, 92425-900, Canoas, RS, Brazil.

Article Synopsis
  • Niobium (V) oxide nanoparticles (NINPs) are increasingly used in health and industrial applications, prompting a closer examination of their potential toxicity.
  • The study found that both crystalline and amorphous NINPs can induce DNA damage and chromosome instability in cultured CHO-K1 cells, particularly at higher concentrations.
  • Results indicated significant cytotoxic effects and increased micronucleus frequencies, highlighting the need for safety guidelines regarding NINPs in various applications.
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Background: The aim was to estimate the prevalence of reuse of healing abutments, the methods used in disinfection and to analyze the reasons that lead to the reuse of these components by professionals who work in rehabilitation with dental implants.

Material And Methods: For this, an online data collection was carried out through a questionnaire developed in Google Forms. This questionnaire was applied to 284 specialists in implantology, randomized, of the 1,147 registered in the Regional Council of Dentistry of Rio Grande do Sul.

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Challenges in Mesenchymal Stromal Cell-based Therapies.

Curr Stem Cell Res Ther

June 2023

Gene Therapy Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran.

Over 50 years have passed since discovering mesenchymal stromal cells (MSCs). Initially, despite gaps in the knowledge of the identity of these cells, their therapeutic aspects were recognized. Consequently, MSCs became candidates for treating a wide range of diseases.

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infects poultry, and it is also a human foodborne pathogen. This bacterial genus is classified into several serovars/lineages, some of them showing high antimicrobial resistance (AMR). The ease of transmission in farms, slaughterhouses, and eggs industries has made controlling it a real challenge in the poultry-production chains.

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Norbixin, a natural dye that improves serum lipid profile in rabbits and prevents LDL oxidation.

Food Res Int

September 2022

Graduate Program on Pharmacology, Center of Health Sciences, Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil; Graduate Program on Food Science and Technology, Center of Rural Sciences, Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil; Integrated Center for Laboratory Analysis Development (NIDAL), Department of Food Technology and Science, Center of Rural Sciences, Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil. Electronic address:

We hypothesized that norbixin, which is a carotenoid used as an orange/red natural food coloring additive, has anti-atherogenic properties. An in vitro oxidation assay with human LDL and a rabbit model of atherosclerosis were used to test this hypothesis. Norbixin inhibited the oxidation of isolated human LDL in a concentration-dependent manner.

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The main environmental problem in urban areas, especially in Brazil, is the discharge of untreated sewage. The Somatic Mutation and Recombination Test (SMART) was used to assess the genotoxicity of surface waters from three different sites in the Tocantins River, Brazil. The approach was used to search for known and predicted interactions between environmental chemicals found in our samples and a and human proteins.

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Introduction And Objectives: Chronic low back pain is the main cause of disability worldwide, generating high costs for society. To evaluate the prevalence of disability in patients with non-specific chronic low back pain and associated factors, including the impacts of low back pain and psychosocial factors linked to kinesiophobia, catastrophism, anxiety, and depression.

Patients: A cross-sectional study was carried out with 108 adult individuals who had non-specific chronic low back pain.

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Objectives: To verify the associations between prenatal and perinatal factors with offspring body mass index (BMI) and the moderator role of maternal BMI in this relationship.

Methods: Cross-sectional study developed with 1,562 children and adolescents aged between 6 and 17 years, as well as their mothers, from southern Brazil. The prenatal and perinatal factors, weight, and height for the calculation of maternal BMI were self-reported.

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Background And Aim: Osteoarthritis (OA) is characterized by pain and inflammation. Electroacupuncture (EA) and swimming (SW) are non-pharmacological interventions recommended for treating OA. The study evaluated the benefits of electroacupuncture (EA) and swimming (SW) association when compared with isolated protocols in an OA rodent model.

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Staple line oversewing (SLO) is a prophylactic alternative due to its low cost and its effect of decreasing the incidence and severity of bleeding complications in sleeve gastrectomy (SG). However, this approach significantly increases the surgical time and may be associated with stenosis. The study aims to identify whether its usage was sufficient to optimize the surgical time in patients whose screening for the risk of occult bleeding was negative.

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Myricitrin (MYR), a flavonol consumed in the leaves and fruits of plants of the family, presents anti-proliferative, anti-inflammatory, anti-diabetic, and antioxidant properties in humans. However, there are few studies regarding the cyto-genotoxicity and the chemopreventive potential of MYR. Using the Micronucleus test, the cytostasis, mutagenicity, and modulatory effect of MYR in CHO-K1 cells were assessed.

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Recommendations and quality criteria for micronucleus studies with humans.

Mutat Res Rev Mutat Res

June 2022

Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna, Austria. Electronic address:

Micronucleus (MN) analyses in peripheral blood lymphocytes and exfoliated cells from different organs (mouth, nose, bladder and cervix) are at present the most widely used approaches to detect damage of genetic material in humans. MN are extranuclear DNA-containing bodies, which can be identified microscopically. They reflect structural and numerical chromosomal aberrations and are formed as a consequence of exposure to occupational, environmental and lifestyle genotoxins.

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Exposure in the tobacco fields: Genetic damage and oxidative stress in tobacco farmers occupationally exposed during harvest and grading seasons.

Mutat Res Genet Toxicol Environ Mutagen

June 2022

Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil; Laboratory of Genetic Toxicology, PPGSDH, La Salle University (UniLaSalle), Canoas, RS, Brazil. Electronic address:

Agricultural workers engaged in tobacco cultivation are constantly exposed to large amounts of harmful agents, such as pesticides and nicotine. Furthermore, most of the flue-cured tobacco leaves are manually graded exposing workers to agents such as tobacco-specific nitrosamines. This study aimed to evaluate genetic damage and oxidative stress in tobacco farmers occupationally exposed during the harvest and grading seasons.

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In vitro genotoxic and mutagenic effects of water samples from Sapucaia and Esteio streams (Brazil) under the influence of different anthropogenic activities.

Mutat Res Genet Toxicol Environ Mutagen

June 2022

Laboratory of Genetic Toxicology, PPGBioSaúde (Postgraduate Program in Cellular and Molecular Biology Applied to Health), Lutheran University of Brazil (ULBRA), Av. Farroupilha, 8001, Building 22 (4th floor), 92425-900, Canoas, RS, Brazil; Laboratory of Genetic Toxicology, PPGSDH, La Salle University (UniLaSalle), Av. Victor Barreto, 2288, 92010-000, Canoas, RS, Brazil. Electronic address:

Pollution of aquatic ecosystems is associated with the discharge of mainly industrial and urban effluents, which may cause damage to public health. This study aims to evaluate the cytotoxic, genotoxic, and mutagenic potential of surface water samples under the influence of different anthropogenic effluents in a human-derived liver cell line (HepG2). Samples were collected in Esteio and Sapucaia streams (Rio Grande do Sul; Brazil), which flow into the Sinos River, a source of water supply for more than one million people.

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Genomic instability evaluation by BMCyt and telomere length in Brazilian family farmers exposed to pesticides.

Mutat Res Genet Toxicol Environ Mutagen

June 2022

Molecular Oncology Research Center, Barretos Cancer Hospital, São Paulo, Brazil; University of Cuiabá, Mato Grosso, Brazil. Electronic address:

Brazil is one of the largest consumers of pesticides in the world. This high consumption has resulted in higher potential health risk to agricultural farm workers due to occupational exposure. Hence, the aim of this study is to evaluate genomic instability, using Buccal Micronucleus Cytome (BMCyt) and telomere length (TL) measurement as biomarkers of occupational exposure to pesticides in rural workers living in the State of São Paulo, Brazil.

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Lupin Protein Concentrate as a Novel Functional Food Additive That Can Reduce Colitis-Induced Inflammation and Oxidative Stress.

Nutrients

May 2022

LEAF-Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisbon, Portugal.

Food fortification with bioactive compounds may constitute a way to ameliorate inflammatory bowel diseases (IBDs). Lupin seeds contain an oligomer named deflamin that can reduce IBD’s symptoms via MMP-9 inhibition. Here, our goal was to develop a lupin protein concentrate (LPC) enriched in deflamin and to test its application as a food additive to be used as a functional food against colitis.

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Article Synopsis
  • The study examined how biomechanical factors of implant-supported dentures impact bone loss around implants after one year.
  • The research involved 246 implants supporting 48 dentures and utilized advanced imaging techniques to track changes in bone around the implants.
  • Key findings showed that the clinical crown/implant ratio significantly affected bone loss on specific implant sides, while the anterior cantilever helped reduce bone loss on the lingual side.
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