Publications by authors named "Sandra Rodriguez-Zas"

The alternative splicing of a gene results in distinct transcript isoforms that can result in proteins that differ in function. Alternative splicing processes are prevalent in the brain, have varying incidence across brain regions, and can present sexual dimorphism. Exposure to opiates and other substances of abuse can also alter the type and incidence of the splicing process and the relative abundance of the isoforms produced.

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  • * Identifying prohormones and the neuropeptides derived from them is crucial for understanding and utilizing the increasing number of sequenced genomes.
  • * The text outlines a reliable method for discovering prohormones in genomic data using accessible tools and databases, facilitating the search for new neuropeptides and enhancing proteomic research.
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  • DNA methylation is an epigenetic change that influences gene expression, with effects varying by developmental stage, inflammation, and sex.
  • In a pig model, researchers examined how maternal viral infection and sex affect DNA methylation patterns in the hypothalamus, identifying 120 differentially methylated sites linked to various biological processes.
  • Findings indicate that maternal infection can lead to significant long-term epigenetic changes that differ between males and females, potentially impacting immune response and other developmental processes.
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The hypothalamic molecular processes participate in the regulation of the neuro-immune-endocrine system, including hormone, metabolite, chemokine circulation, and corresponding physiological and behavioral responses. RNA-sequencing profiles were analyzed to understand the effect of juvenile immune and metabolic distress 100 days after virally elicited maternal immune activation during gestation in pigs. Over 1,300 genes exhibited significant additive or interacting effects of gestational immune activation, juvenile distress, and sex.

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This study aimed to improve our understanding of how the hypothalamus mediates the effects of prenatal and postnatal challenges on behavior and sensitivity to stimuli. A pig model of virally initiated maternal immune activation (MIA) was used to investigate potential interactions of the prenatal challenge both with sex and with postnatal nursing withdrawal. The hypothalami of 72 females and males were profiled for the effects of MIA and nursing withdrawal using RNA-sequencing.

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  • - Prenatal stress can lead to maternal immune activation (MIA), affecting brain development and metabolism, with lasting effects that may manifest later in life.
  • - A study using a pig model revealed that both MIA and postnatal stress significantly influenced fifty-nine hippocal metabolites, with some showing interactive effects, impacting important pathways in metabolism and brain function.
  • - The findings suggest that prenatal and postnatal stressors may disrupt metabolic pathways linked to neuroinflammation, supporting the "double-hit hypothesis," which indicates that prior MIA can worsen the effects of later stress on brain health.
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Immune challenges during gestation are associated with neurodevelopmental disorders and can interact with stress later in life. The pituitary gland participates in endocrine- and immune-related processes that influence development, growth, and reproduction and can modulate physiological and behavioral responses to challenges. The objective of this study was to investigate the effect of stressors at different time points on the molecular mechanisms of the pituitary gland and detect sex differences.

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  • - Subfertility is a significant issue in dairy production, and this research focuses on using a reproductive index (RI) to estimate the likelihood of pregnancy in U.S. Holstein cows through genome-wide association analyses (GWAA).
  • - Researchers found moderate heritability (around 16.5%) for the reproductive index, identifying overlapping quantitative trait loci (QTL) related to fertility, primarily on chromosomes 6, 7, and 29, which are linked to reproductive rates.
  • - Using genomic best linear unbiased prediction (GBLUP), the study demonstrated that these genomic tools can make moderate predictions about pregnancy probabilities in cattle, with accuracies comparable to other production traits in bovine genetics.
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This study employs multi-level and mixed-methods approaches to examine how structural violence affects the health of low-income, single Black mothers. We use multilevel regression models to examine how feeling "trapped" in racially segregated neighborhoods with high levels of violence on the South Side of Chicago affects mothers' (N = 69) reports of posttraumatic stress disorder and depressive symptoms. The relationship between feeling "trapped" and variations in expression of mRNA for the glucocorticoid receptor gene NR3C1 using microarray assays was also examined.

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  • The hippocampus is key for spatial navigation and can be affected by environmental and inflammatory challenges during prenatal and postnatal stages, potentially leading to neuropsychiatric issues.
  • A study using a pig model examined the effects of maternal immune activation (MIA) on the hippocampal gene expression of offspring, revealing over 2600 genes influenced by factors like stress, sex, and treatments (fasting, viral mimetics, saline).
  • The research indicates that environmental challenges can interact in complex ways, with some prenatal effects being negated by postnatal stress, highlighting potential molecular targets for addressing stress-related impacts on hippocampal function.
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  • The study investigates how maternal immune activation (MIA) and morphine exposure affect brain pathways in a pig model, focusing on the prefrontal cortex of both sexes.
  • Researchers used RNA-sequencing to analyze about 2000 genes, revealing significant interactions between morphine, MIA, and sex, particularly in pathways related to inflammation and neuronal development.
  • Findings indicate that the combined impact of morphine and MIA is less extreme than that of individual exposures, providing new insights into how prenatal and postnatal challenges influence brain molecular mechanisms.
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Cover cropping (CC) is a promising in-field practice to mitigate soil health degradation and nitrogen (N) losses from excessive N fertilization. Soil N-cycling microbial communities are the fundamental drivers of these processes, but how they respond to CC under field conditions is poorly documented for typical agricultural systems. Our objective was to investigate this relationship for a long-term (36 years) corn [ L.

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Neurogenomic changes induced by maternal immune activation (MIA) during gestation and the social stress of weaning can alter brain plasticity in the hippocampus of offspring. The present study furthers the understanding of how these stressors impact hippocampus gene networks. The hippocampus transcriptome was profiled in pigs that were either exposed to MIA or not and were weaned or nursed.

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The impact of evolution and domestication processes on the sequences of neuropeptide prohormone genes that participate in cell-cell signaling influences multiple biological process that involve neuropeptide signaling. This information is important to understand the physiological differences between domesticated species such as cow, pig, and llama and wild species such as hippopotamus, giraffes, and whales. Systematic analysis of changes associated with evolutionary and domestication forces in neuropeptide prohormone protein sequences that are processed into neuropeptides was undertaken.

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No studies, to date, have scrutinized the role of dietary patterns on prognosis following a head and neck squamous cell carcinoma (HNSCC) diagnosis. The purpose of this analysis was to evaluate the associations between adherence to six defined diet quality indices (including AHEI-2010, aMED, DASH, and three low-carbohydrate indices) throughout the first 3 years of observation and all-cause and cancer-specific mortalities in 468 newly diagnosed HNSCC patients from the University of Michigan Head and Neck Specialized Program of Research Excellence (UM-SPORE). The dietary intake data were measured using a food frequency questionnaire administered at three annual time points commencing at study entry.

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  • - Migraine-related hypersensitivity involves changes in gene splicing, particularly in neuropeptide prohormone and receptor genes linked to pain signaling in specific brain regions of mice.
  • - Researchers identified 540 isoforms from these genes, with notable findings including significant differential expression in several key genes associated with hypersensitivity.
  • - The study emphasizes that understanding alternative splicing patterns can enhance insights into pain mechanisms and improve treatment strategies for migraines and related conditions.
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  • This study investigates insect meals as sustainable protein sources, focusing on their chemical composition and digestibility in adult cats.
  • Researchers examined three insect meals: speckled cockroach, Madagascar hissing cockroach, and superworm, comparing their effects to a traditional chicken-based diet.
  • Results showed that all diets were well digested, with similar fecal scores and microbial diversity, indicating that insect meals could effectively replace chicken in cat diets without negative impacts on health.
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Garbanzo beans (GB; Cicer arietinum) are a readily available pulse crop that have gained popularity as a plant-based protein source in the pet food industry. However, raw GB contain anti-nutritional factors that can reduce digestibility and cause digestive upsets in pets that are undesirable to owners. The objective of this study was to determine the effects of the inclusion of raw or cooked GB in extruded feline diets on macronutrient digestibility, gastrointestinal tolerance, and fermentative end-products in cats.

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  • Prolonged opioid use can lead to a condition called opioid-induced hyperalgesia (OIH), where the pain sensitivity increases instead of decreases.
  • A study investigated the role of alternative splicing in genes and how they contribute to OIH, revealing different patterns of gene expression in certain brain regions of mice exposed to chronic morphine.
  • The findings emphasize the importance of understanding specific gene isoforms and regulatory factors involved in OIH to better comprehend the effects of morphine on pain sensitivity.
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Weaning stress can elicit changes in the metabolic, hormone and immune systems of pigs and interact with prolonged disruptions stemming from maternal immune activation (MIA) during gestation. The present study advances the characterization of the combined effects of weaning stress and MIA on blood chemistry, immune and hormone indicators that inform on the health of pigs. Three-week-old female and male offspring of control gilts or gilts infected with the porcine reproductive and respiratory syndrome virus were allocated to weaned or nursed groups.

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Weaning wields environmental, social, and nutritional stresses that are detectable in the blood metabolite levels of the offspring. Prenatal stress in the form of maternal immune activation (MIA) in response to infection, which is associated with health and behavior disorders, also elicits prolonged changes in blood and brain cytokine and metabolite levels of the offspring. The goal of this study was to investigate the effects of weaning and MIA on the offspring's liver function to advance the understanding of the impact of stressors on peripheral and central nervous systems, physiology, and health.

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Recent advancements in agricultural metagenomics allow for characterizing microbial indicators of soil health brought on by changes in management decisions, which ultimately affect the soil environment. Field-scale studies investigating the microbial taxa from agricultural experiments are sparse, with none investigating the long-term effect of crop rotation and tillage on microbial indicator species. Therefore, our goal was to determine the effect of rotations (continuous corn, CCC; continuous soybean, SSS; and each phase of a corn-soybean rotation, Cs and Sc) and tillage (no-till, NT; and chisel tillage, T) on the soil microbial community composition following 20 years of management.

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Although dietary fiber is not considered an essential nutrient in a complete and balanced diet for felines, it provides a substrate for fermentation by gut microbiota, thus promoting gastrointestinal health through the production of fermentative metabolites, as well as improving laxation. The aim of this research was to evaluate the novel fiber source, grass (), in comparison with traditional fiber sources and their effects on fecal quality, apparent total tract digestibility (ATTD), fecal fermentative end products, and microbiota of healthy adult cats. Four dietary treatments were evaluated, differing in dietary fiber source.

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The popularity of plant-based protein sources has increased as consumer demand for grain-free and novel protein sources increase. Minimal research has been conducted as regards to use of legumes and yeast and their effects on acceptability and digestibility in canine diets. The objective of this study was to evaluate macronutrient apparent total tract digestibility (ATTD), gastrointestinal tolerance, and fermentative end-products in extruded, canine diets.

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The research objectives were to evaluate the effect of dietary supplementation of white () and red () sorghum grains on gastrointestinal health of felines through the determination of apparent total tract macronutrient digestibility (), fecal characteristics, fermentative end-products, and microbiota, compared with a traditional corn-based diet. We hypothesize that inclusion of RSH and WSH, respectively, would be well-accepted by cats, and the RSH and WSH diets would be comparable to corn when added as the main carbohydrate source in extruded diets. Three diets containing 30% corn, 30% WSH, or 30% RSH were formulated to meet or exceed the AAFCO (2018) nutrient profiles for cats during growth.

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