Maricela Montalvo-Corral

• D.Sc
• Researcher at Research Center for Food and Development A.C.

This study describes the genetic characterization of avian influenza virus from waterfowl in Mexico. Partial sequences of two H5, one H6, and one H9 hemmaglutinin (HA) genes were determined. The deduced amino acid sequences showed that they were low-pathogenic viruses (LPAI). Phylogenetic analysis of H5 and H6 HA indicates a North American lineage,...

A two-year survey was carried out on the occurrence of avian influenza in migrating birds in two estuaries of the Mexican state of Sonora, which is located within the Pacific flyway. Cloacal and oropharyngeal swabs were collected from 1262 birds, including 20 aquatic bird species from the Moroncarit and Tobari estuaries in Sonora, Mexico. Samples w...

A cross-sectional study was conducted to evaluate the transmission of swine influenza through occupational exposure and to assess some risk factors for zoonotic transmission in workers from commercial farms in Mexico. Seroprevalence to swine influenza subtypes was determined by hemagglutinin inhibition assay and was higher in exposed (E), in compar...

The surveillance of influenza A viruses (IAV) in migratory waterfowl is of great importance, given the possibility of transmission to susceptible hosts and introduction of viral subtypes, including highly pathogenic strains, to new geographic regions. IAV were previously identified from migratory birds in two wetlands located in Mexico during two w...

This study evaluated the effects of clinoptilolite (CTL) and ferulic acid (FA) supplementation on in vitro ruminal fermentation characteristics, gas production, and bacterial abundance. Treatments were arranged in a 2 × 2 factorial design (FA: 0 or 300 ppm; CTL: 0 or 1%) with repeated measures over time (2, 4, 8, 12, 24, 36, 48, and 72 h). Througho...

El objetivo del trabajo fue evaluar el efecto de la suplementación de orujo de uva (OU) sobre la microbiota intestinal (MI) y desempeño productivo de cerdos finalizadores. Se utilizaron 20 cerdos finalizadores machos (Duroc x Yorkshire, peso vivo inicial de 80 kg), alojados individualmente en corraletas provistas de bebedero y comedero. Se asignaro...

In recent years, research has focused on the study, development and validation of compounds of natural origin that can be used effectively and safely as an alternative to conventional growth promoters routinely used in livestock production, so that these do not compromise animal welfare, or the meat quality characteristics. One of these alternative...

Objectives: Adaptive immunity is crucial in controlling Giardia lamblia infection in the intestinal mucosa, and some dietary lipids may improve mucosal immune function. The aim of this study was to evaluate conjugated linoleic acid (CLA) on the Th17/Treg response and secretory IgA production in a model of giardiasis infection. Materials and metho...

This study was conducted to evaluate the effect of ferulic acid (FA) and clinoptilolite (CTL) supplementation on the growth performance, carcass characteristics, and meat quality of hair-breed lambs. Twenty-eight Kathadin male lambs (33.72 ± 3.4 kg) were randomly allocated to one of the four diets (n=7) under a 2 × 2 factorial arrangement to evalua...

Objectives: to investigate the relationship of R1587K genotypes with cardiovascular (CV) risk, metabolic syndrome (MetS), lipid profile, paraoxonase-1 (PON1) activity, and anti-oxLDL titers. Methods: we performed a cross-sectional study in 57 northern Mexican adults with no reported diseases. The ABCA1 R1587K SNP was detected by real-time polyme...

Hot environments can affect feed intake and lactation, and the subsequent unavailability of important micronutrients to the newborn piglet can impair piglet growth, reduce the viability of newborn piglets and limit their subsequent performance. This work addresses the effects of hot environments (summer season) upon the reproductive performance of...

The constant threat of emergence for novel pathogenic influenza A viruses with pandemic potential, makes full-genome characterization of circulating influenza viral strains a high priority, allowing detection of novel and re-assorting variants. Sequencing the full-length genome of influenza A virus traditionally required multiple amplification roun...

Purpose: Ionizing radiation is nowadays effectively used in cancer treatments. However the effect of irradiation in immune-system cells is poorly understood and remains controversial. The aim of this work was to determine the effect of γ-irradiation in the structural and functional properties of mice splenic cells. Materials and methods: Structural...

La supervivencia del cáncer de mama (CaMa) a nivel mundial es del 89.5% a los 5 años después del diagnóstico, mientras que en México es del 58.9%. Se recomienda a las sobrevivientes tener una dieta saludable alta en alimentos de origen vegetal. Los niveles de carotenos son comúnmente utilizados para evaluar el consumo de frutas y verduras. Estos pi...

Introduction: Giardia lamblia, a protozoan intestinal parasite is able to evade or suppress defense mechanisms, such as innate response. Antigen presenting cells (APC) like dendritic cells may orchestrate an immune response and support a more effective adaptive defense. Conjugated linoleic acid (CLA), a dietary lipid, has shown biological activity...

The Polymerase Chain Reaction (PCR), compared to the serological reference technique for the detection of Leptospira spp., was implemented to evaluate its application as a leptospirosis diagnosis method in samples of symptomatic patients of recent infection from the health sector in northwestern México. Samples of 34 patients were analyzed using th...

The relationship of the Pro12Ala polymorphism in the peroxisome proliferator–activated receptor γ (PPARγ) gene with obesity and its modulation by dietary fat has been proposed, but the few studies addressing this issue have yielded controversial results. In a Mexican population characterized by high-fat consumption, we hypothesized that the Pro12Al...

Obesity was recognized as an independent risk factor for morbidity and mortality during last influenza A/H1N1 pandemic. Mechanisms involved in the high mortality risk from obesity during influenza A virus include reduced type I interferon production and delayed pro-inflammatory response, which lead to a higher rate of morbidity and mortality in mur...

Objective: We analyzed the interferon-α (IFN-α), IFN-β, and proinflammatory responses induced by Toll-like receptor (TLR) ligands in peripheral blood mononuclear cells (PBMCs) from obese subjects and their association with suppressor of cytokine signaling-1 (SOCS1) and SOCS3 expression. Methods: The IFN responses were measured by real-time quant...

The aim of this work was to quantify porcine circovirus type 2 (PCV2), porcine reproductive and respiratory syndrome virus (PRRSV), as well as cytokine mRNA expression (IL-6, IL-12, TNF-α, and IFN-γ) in superficial inguinal lymph nodes (SILN) of pigs from postweaning multisystemic wasting syndrome (PMWS)-affected and healthy farms. Genetic characte...

The aim of this work was to quantify porcine circovirus type 2 (PCV2), porcine reproductive and respiratory syndrome virus (PRRSV), as well as cytokine mRNA expression (IL-6, IL-12, TNF-α, and IFN-γ) in superficial inguinal lymph nodes (SILN) of pigs from postweaning multisystemic wasting syndrome (PMWS)-affected and healthy farms. Genetic characte...

In this study, the humoral response against porcine reproductive and respiratory syndrome virus (PRRSV) and porcine circovirus type 2 (PCV2), the presence of the virus in semen and serum and the genetic characteristics of the virus detected in 15 boars from a commercial farm were analysed. The results showed that 53% of the boars presented anti-PRR...

Avian influenza viruses produce mainly respiratory and intestinal diseases. Their relevance in the generation of pandemic strains has led to a large amount of research to understand their distribution in nature, as well as the relations that become established for the effective transmission among different hosts. Waterfowl have been recognized as t...

Avian influenza viruses produce mainly respiratory and intestinal diseases. Their relevance in the generation of pandemic strains has led to a large amount of research to understand their distribution in nature, as well as the relations that become established for the effective transmission among different hosts. Waterfowl have been recognized as t...

Highly pathogenic avian influenza virus (HPAI) H5N1 is a global threat due to its zoonotic and pandemic potential. Then, concern arises and the need to have early detection tools to minimize the impact on human and animal health. In this work, a molecular detection method was implemented to detect matrix (M), hemagglutinin (H5) and neuraminidase (N...

P. sterna oocytes cannot be fertilized in vitro unless they are obtained by inducing spawning. The present work was undertaken to develop a simple method to induce germinal vesicle breakdown that would enable the oocytes to be fertilized without prior spawning. We found that Pteria sterna oocytes removed from the ovaries are induced to undergo germ...