2,864 results match your criteria: "State University of Campinas (UNICAMP) - Campinas (SP)[Affiliation]"

Body composition abnormalities are prognostic markers in several types of cancer, including colorectal cancer (CRC). Using our data distribution on body composition assessments and classifications could improve clinical evaluations and support population-specific opportune interventions. This study aimed to evaluate the distribution of body composition from computed tomography and assess the associations with overall survival among patients with CRC.

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Natural indigo toxicity for aquatic and terrestrial organisms.

Ecotoxicol Environ Saf

December 2024

Faculdade de Tecnologia, Universidade Estadual de Campinas, UNICAMP, Limeira, SP, Brazil.

Indigo is a widely used colorant available from natural and synthetic origin. It is practically insoluble in water. Indigo can reach aquatic sediments through wastewater discharges from dyeing processes, terrestrial compartments from the treatment sludges used as biosolids and dyed textiles disposed in landfills.

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This study investigated the effect of platelet-rich fibrin (PRF) on bone healing around implants placed in elevated sinus cavities. Forty New Zealand albino rabbits were divided into eight groups, based on the time of sacrifice (14 or 40 days) and the material used: blood clot (control), hydroxyapatite (HA) from bovine bone, HA combined with PRF, and PRF alone. Each group consisted of five animals (n = 5).

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Study of the synergistic properties of copaiba oil co-electrospun with poly(L-co-D,L lactic acid) and natural rubber latex for application in bioactive wound dressings.

Int J Biol Macromol

December 2024

Post-Graduation Program in Materials Sciences (PPGCM), Federal University of São Carlos (UFSCar), 18052-780, Brazil; Laboratory of Biomaterials, Faculty of Medical Sciences and Health (FCMS), Pontifical Catholic University of São Paulo (PUC-SP), 18030-070, Brazil; Mechanical Engineering Faculty (FEM), State University of Campinas (UNICAMP), 13083-970, Brazil; Post-Graduation Program of Biomaterials and Regenerative Medicine (PPGBMR), Surgery Department, (PUC-SP), 18030-070, Brazil.

Wound healing is a complex process involving a sequence of factors that can be disrupted, negatively impacting the quality of life for patients and overburdening healthcare systems. Advanced dressings obtained by electrospinning are highlighted by the optimization of this process, allowing air exchange and protection against microorganisms. Aiming to develop bioactive dressings, this study investigated the physicochemical, mechanical, microbiological, and in vitro biological properties of membranes containing 25 %, 50 %, 75 %, and 90 % copaiba oil (CO) co-electrospun with poly(L-co-D,L-lactic acid) (PLDLA) and natural rubber latex (NR).

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Fermi Polaron in Atom-Ion Hybrid Systems.

Phys Rev Lett

December 2024

Dipartimento di Fisica, Università di Trieste, Strada Costiera 11, I-34151 Trieste, Italy.

Atom-ion hybrid systems are promising platforms for the quantum simulation of polaron physics in certain quantum materials. Here, we investigate the ionic Fermi polaron, a charged impurity in a polarized Fermi bath, at zero temperature using quantum Monte Carlo techniques. We compute the energy spectrum, residue, effective mass, and structural properties.

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Brycon amazonicus, a fish species widely distributed along freshwater rivers in Latin America, is important in maintaining ecological balance. Although some morphological/physiological aspects of B. amazonicus have been reported, the cardiac histomorphology of this species remains poorly understood.

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Introduction: The present study aimed to identify the physical demands of Brazilian Air Force (BAF) critical Combat Tasks (CTs) and investigate the occurrence of differences in their difficulty perceived ratings, considering aspects such as sex, military experience, and academic degree of the evaluators.

Methods: The Subject Matter Expert (SME) cohort was assembled based on the BAF's Physical Training Specialists (n = 13, military, at least 2 years of experience). Based on the BAF's previous studies, a questionnaire defining and rating the physical demands of 12 BAF critical CTs was developed.

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Background: Elucidating the intricacies of the sugarcane genome is essential for breeding superior cultivars. This economically important crop originates from hybridizations of highly polyploid Saccharum species. However, the large size (10 Gb), high degree of polyploidy, and aneuploidy of the sugarcane genome pose significant challenges to complete genome sequencing, assembly, and annotation.

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This study evaluated the surface roughness, color change, and antibacterial effect of a ceramic glaze enhanced with TiO nanotubes (n-TiO). n-TiO (0, 2, 2.5, and 5 wt%) was added to a ceramic glaze powder, applied to the surface of forty feldspathic ceramic specimens, and sintered.

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DC. (Geraniaceae) is a widely recognized medicinal plant whose natural extract exhibits therapeutic effects through a multi-target approach. Existing literature encompasses investigations of antimicrobial and cellular effects, including clinical trials.

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After revising the literature and consulting the pertinent virtual databases, we here list all Brazilian marine bivalves currently considered as valid and include data on their geographical and bathymetrical distribution. The list contains 516 indigenous and nine introduced species. Among the former, 461 species are autobranchs and 64 are protobranchs.

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Introduction: Evidence-based clinical practice guidelines drive optimal patient care and facilitate access to high-quality treatment. Creating guidelines for rare diseases such as haemophilia, where evidence does not often come from randomized controlled trials but from non-randomized and well-designed observational studies and real-world data, is challenging. The methodology used for assessing available evidence should consider this critical fact.

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The poor prognosis of colorectal cancer (CRC) is mainly associated with the highly invasive nature, delayed diagnosis, multidrug-resistant cells, tumor recurrence, and metastasis. Targeted therapies offer a promising means to enhance drug accumulation at the tumor site with the aid of cell-targeting ligands. Herein, chitosan-based multifunctional nanoparticles, conjugated with methotrexate (MTX) by covalent bonds, were designed for targeted delivery of 5-fluorouracil (5-FU) to improve CRC therapy.

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Article Synopsis
  • - The study examined how aqueous extraction processes (AEP) and enzyme-assisted aqueous extraction processes (EAEP) affect the nutritional and biological properties of green coffee extracts, focusing on protein digestibility and antioxidant content.
  • - Increasing the extraction pH to 9.0 decreased levels of caffeine and certain phenolic compounds, resulting in lower antioxidant activity, while pH 7.0 yielded better overall extract quality with higher phenolic compounds and lipase inhibitory activity.
  • - EAEP extracts showed stronger inhibition of angiotensin-converting enzyme than AEP extracts, indicating that both extraction methods can be optimized to enhance specific health-related properties of green coffee extracts sustainably.
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Background & Aims: Meal timing is an emerging branch of science that investigates the influence of eating patterns on the circadian rhythm and overall health. There are still discrepancies in the literature as to whether late distribution of food intake and sleep disorders could impact biochemical, anthropometric, and cardiovascular markers. The objectives of this study were firstly observe skipping breakfast and sleep disorders over 12 months.

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Engineering the secretome of Aspergillus niger for cellooligosaccharides production from plant biomass.

Microb Cell Fact

November 2024

Laboratory of Enzymology and Molecular Biology of Microorganisms (LEBIMO), Department of Biochemistry and Tissue Biology, Institute of Biology, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, 13083-862, Brazil.

Background: Fermentation of sugars derived from plant biomass feedstock is crucial for sustainability. Hence, utilizing customized enzymatic cocktails to obtain oligosaccharides instead of monomers is an alternative fermentation strategy to produce prebiotics, cosmetics, and biofuels. This study developed an engineered strain of Aspergillus niger producing a tailored cellulolytic cocktail capable of partially degrading sugarcane straw to yield cellooligosaccharides.

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In recent decades, contaminants of emerging concern (CECs) in aquatic environments have garnered significant attention due to their adverse effects on ecosystems and human health. Among these CECs, bisphenol A (BPA) is a major concern because of its widespread use and endocrine-disrupting properties. Brazil's urbanization and industrial growth have led to significant pollution challenges, primarily due to inadequate sewage infrastructure and untreated domestic wastewater being discharged into rivers, contributing to the presence of emerging contaminants in surface waters.

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Background: High-intensity interval training (HIIT) performed before, during, and after cancer treatment can attenuate the adverse effects induced by anti-cancer drugs. A clear presentation and rationale of characteristics of HIIT variables is vital to produce the expected HIIT adaptations in cancer patients. However, there are concerns regarding the HIIT protocols used in the cancer literature.

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Spinal cord injury results in significant motor and sensory loss. In the experimental ventral root avulsion (VRA) model, the ventral (motor) roots are disconnected from the spinal cord surface, disrupting contact between spinal motoneurons and muscle fibers. Axotomized motoneurons typically degenerate within two to three weeks after avulsion, the situation being exacerbated by an increased glial response and chronic inflammation.

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The aim of this study was to evaluate the mechanical effect of ovariectomy, diet, and tooth extraction on the bone structure of the mandible of Wistar rats. Mandibles from 40 female Wistar rats were used, divided into rats with ovariectomy surgery or surgical simulation. Half of the rats had the right upper incisor extracted and a soft diet was introduced for half of the animals for 30 days.

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GH10 xylanases and GH62 Arabinofuranosidases play key roles in the breakdown of arabinoxylans and are important tools in various industrial and biotechnological processes, such as renewable biofuel production, the paper industry, and the production of short-chain xylooligosaccharides (XOS) from plant biomass. However, the use of these enzymes in industrial settings is often limited due to their relatively low thermostability and reduced catalytic efficiency. To overcome these limitations, strategies based on enzymatic chimera construction and the use of metal ions and other cofactors have been proposed to produce new recombinant enzymes with improved catalytic activity and thermostability.

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Titanium dioxide nanotubes incorporated into conventional glass ionomer cement alter the biological behavior of pre-odontoblastic cells.

Colloids Surf B Biointerfaces

February 2025

Faculdade São Leopoldo Mandic (SLMANDIC), Rua José Rocha Junqueira 13, Swift, Campinas, SP 13045-755, Brazil; Department of Comprehensive Dentistry, University of Maryland, School of Dentistry, 650 W Baltimore St., Baltimore, MD 21201, USA. Electronic address:

The objective was to address the repercussion of adding titanium dioxide nanotubes (TiO-nt) into high-viscosity conventional glass ionomer cement (GIC) on the biological properties of pre-odontoblastic cells (MDPC-23) challenged by lipopolysaccharides (LPS - 2 μg/mL). TiO-nt was added to Ketac Molar EasyMix at 3, 5, 7 %, whereas unblended GIC served as control. Analyses included proliferation (n=6; 24, 48, 72 h), metabolism (MTT; n=6; 24, 48, 72 h); morphology laser microscopy (n=3; 24, 48, 72 h); proteome assessments IL-1β, IL-6, IL-10, VEGF, TNF-α (n=3; 12, 18 h); mRNA levels (RT-PCR) of Il-1β, Il-6, Il-10, VEGF, TNF-α (n=3; 12, 18 h) and DSPP (n=3; 24, 72, 120 h).

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Preeclampsia, a pregnancy-specific syndrome, poses substantial risks to maternal and neonatal health, particularly in cases with severe features. Our study focuses on evaluating the impact of low molecular weight metabolites on the intricate mechanisms and pathways involved in the pathophysiology of preeclampsia when severe features are present. We aim to pinpoint the distinct metabolomic profile in maternal plasma during pregnancies affected by hypertensive disorders and to correlate the metabolite levels with the clinical characteristics of the study cohort.

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This narrative review explores texture analysis as a valuable technique in dentomaxillofacial diagnosis, providing an advanced method for quantification and characterization of different image modalities. The traditional imaging techniques rely primarily on visual assessment, which may overlook subtle variations in tissue structure. In contrast, texture analysis uses sophisticated algorithms to extract quantitative information from imaging data, thus offering deeper insights into the spatial distribution and relationships of pixel intensities.

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Impact of Sleeve Gastrectomy on Body Weight and Food Intake Regulation in Diet-Induced Obese Mice.

Curr Issues Mol Biol

November 2024

Obesity and Comorbidities Research Center (OCRC), Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas 13083864, SP, Brazil.

The epidemic of obesity has increased worldwide and is associated with comorbidities such as diabetes and cardiovascular disease. In this context, strategies that modulate body weight and improve glycemic metabolism have increased, and bariatric surgeries such as Sleeve Gastrectomy (SG) have been highlighted in obesity treatment. However, the mechanism by which SG reduces body weight and improves glycemic control remains unknown.

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