Ramon V. Cortez

ORCID: 0000-0003-2059-4726
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About
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Research Areas
  • Gut microbiota and health
  • Diet and metabolism studies
  • Infant Nutrition and Health
  • Clostridium difficile and Clostridium perfringens research
  • Gestational Diabetes Research and Management
  • Breastfeeding Practices and Influences
  • Pelvic floor disorders treatments
  • Pediatric health and respiratory diseases
  • Gastrointestinal motility and disorders
  • Liver Disease Diagnosis and Treatment
  • Sinusitis and nasal conditions
  • Reproductive tract infections research
  • Metabolomics and Mass Spectrometry Studies
  • Oral microbiology and periodontitis research
  • Pediatric Hepatobiliary Diseases and Treatments
  • Science Education and Pedagogy
  • Cystic Fibrosis Research Advances
  • Bariatric Surgery and Outcomes
  • Tracheal and airway disorders
  • Nutritional Studies and Diet
  • Liver Diseases and Immunity
  • Urinary Tract Infections Management
  • Child Nutrition and Water Access
  • Educational Strategies and Epistemologies
  • Sleep and related disorders

Universidade de São Paulo
2018-2024

Hospital Universitário da Universidade de São Paulo
2018

Universidade Federal de São Paulo
2018

Human milk microorganisms contribute not only to the healthy development of immune system in infants, but also shaping gut microbiota. We evaluated effect maternal diet during pregnancy and first month lactation on human microbiota a cross-sectional study including 94 lactating women. Microbiota composition was determined by 16S rDNA profiling nutrient intake assessed through food questionnaires. Thirteen genera were present at least 90% all samples, with three samples: Streptococcus,...

10.3390/microorganisms7110502 article EN cc-by Microorganisms 2019-10-29

Few studies reported the relation of intestinal microbiome composition and diversity in pediatric patients with primary sclerosing cholangitis (PSC) ulcerative colitis (UC). In this cross-sectional study, we selected younger than 19 years old from gastroenterology hepatology outpatient clinic a tertiary hospital to describe PSC associated or not UC. Patients were divided PSC, PSC+UC, UC diagnosis. A stool sample was collected each patient (n=30) healthy relative/neighbor (n=23). The assessed...

10.3389/fimmu.2020.598152 article EN cc-by Frontiers in Immunology 2021-02-05

The initial colonization of the human microbiota is paramount importance. In this context, oropharyngeal administration colostrum a safe, viable, and well-tolerated practice even by smallest preterm infants. Therefore, study evaluated effects on establishment infants’ oral microbiota. A longitudinal observational was carried out with 20 premature neonates, divided into two groups: one receiving protocol (Oropharyngeal Administration Colostrum; OAC) other Standard Caare (SC). Saliva samples...

10.3390/nu13124224 article EN Nutrients 2021-11-24

Metabolic syndrome is a multifactorial disease, and the gut microbiota may play role in its pathogenesis. Obesity, especially abdominal obesity, associated with insulin resistance, often increasing risk of type two diabetes mellitus, vascular endothelial dysfunction, an abnormal lipid profile, hypertension, inflammation, all which promote development atherosclerotic cardiovascular disease.To evaluate outcomes fecal transplantation (FMT) patients metabolic syndrome.This was randomized,...

10.12998/wjcc.v11.i19.4612 article EN World Journal of Clinical Cases 2023-06-30

Blood orange juice is an important source of flavanones and anthocyanins, mainly hesperidin, narirutin, cyanidin-3- O -glucoside. The benefits these bioactive compounds have been reported, but the mechanistic details behind their biological effects are not well established. This study investigated Moro ( Citrus sinensis L. Osbeck) (MOJ) on gut microbiota composition cardiometabolic biomarkers in overweight women. In this study, 12 women (BMI from 25.0 to 29.9 kg/m 2 ), aged 18–37 years,...

10.3389/fmicb.2023.1199383 article EN cc-by Frontiers in Microbiology 2023-07-04

Abstract Adolescents' (N = 688, ages 11-17 years) understanding of the science-related categories observation, prediction, and hypothesis was tested via Test Hypo-thetico-Deductive Reasoning (THDR), developed by authors. The THDR required students to classify statements from everyday educational contexts according those 3 categories. Results indicated that performed increasingly better Grade 6 11 on both context items (significant increases with each grade level, p < .001). In general, had...

10.1080/00221329909595387 article EN The Journal of Genetic Psychology 1999-06-01

Introduction Type 2 diabetes mellitus (T2DM) is associated with dysbiosis in the gut microbiota (MB). Individually, each medication appears to partially correct this. However, there are no studies on response of MB changes A1c. Therefore, we investigated MB’s intensive glycemic control. Research design and methods We studied two groups patients uncontrolled T2DM, one group an A1c &lt;9% (18 patients—G1) another &gt;9% (13 patients—G2), aiming for at least a 1% reduction collected fecal...

10.1136/bmjdrc-2023-003964 article EN cc-by-nc BMJ Open Diabetes Research & Care 2024-06-01

Very low birth weight (VLBW) infants, mostly preterm, have many barriers to feeding directly from the mother’s breast, and need be fed alternatively. Feeding is a major influencer in oral microbial colonization, this colonization early life crucial for promotion of human health. Therefore, research aimed observe establishment microbiome VLBW infants during their first month through hospitalization, verify impact caused by implementation diet on these newborns. We included 23 newborns...

10.1371/journal.pone.0295962 article EN cc-by PLoS ONE 2023-12-15

Background: Human milk microorganisms contribute towards developing the gut microbiota in infants and shaping immune system early life. We evaluated effect of maternal diet during pregnancy first month lactation on human microbiota. Methods: A cross-sectional investigation included healthy lactating women with uncomplicated pregnancy. Associations between nutrients bacteria community were through PERMANOVA tests clustering analysis using weighted UniFrac distance for nutrients. Findings:...

10.2139/ssrn.3301624 article EN SSRN Electronic Journal 2018-01-01

BACKGROUND: Culture independent methods of molecular detection microbiome have shown the polymicrobial nature respiratory infections in cystic fibrosis, with pathogenic agents undetectable conventional culture methods. Composition and diversity airway are still poorly understood. METHODOLOGY: This study evaluated 31 adult fibrosis patients via analysis 16S rRNA se- quences by next generation sequencing. RESULTS: Staphylococcus, Streptococcus Corynebacterium were most abundant genera middle...

10.4193/rhinol/20.040 article EN cc-by Rhinology online 2020-12-01
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