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1. Hypophysectomy and Neurointermediate Pituitary Lobectomy Reduce Serum Immunoglobulin M (IgM) and IgG and Intestinal IgA Responses to Salmonella enterica Serovar Typhimurium Infection in Rats

Author:
Ventura-Juárez, Javier,   et al.   ; Campos-Rodríguez, Rafael; Quintanar-Stephano, Andrés; Jarillo-Luna, Rosa Adriana; Oliver-Aguillón, Gabriela; Rivera-Aguilar, Victor; Berczi, Istvan; Kovacs, Kalman;     Show all 8 Authors
Source:
Infection and immunity 2006 v.74 no.3 pp. 1883-1889
ISSN:
0019-9567
Subject:
immunoglobulin M; secretion; Salmonella Typhimurium; immunoglobulin A; hypophysectomy; intestinal mucosa; immunoglobulin G; atrophy; cell-mediated immunity; vasopressin; Peyer's patches; spleen; blood serum; humans; humoral immunity; serotypes; intestinal absorption; immune response; gastrointestinal hormones; rats; bacterial colonization; oxytocin; anterior pituitary hormones; surface proteins
Abstract:
... The influence of anterior pituitary hormones on the gastrointestinal tract of humans and animals has been reported. Hypophysectomy (HYPOX) in the rat causes atrophy of the intestinal mucosa, reduction of gastric secretion and intestinal absorption, and increased susceptibility to infections. To our knowledge, there are no studies on the humoral immune response of the gut-associated lymphoid tissue ...
DOI:
10.1128/IAI.74.3.1883-1889.2006
PubMed:
16495563
PubMed Central:
PMC1418627

2. Bioconcentration and localization of lead in the freshwater rotifer Brachionus calyciflorus Pallas 1677 (Rotifera: Monogononta)

Author:
Ventura-Juárez, Javier,   et al.   ; Alvarado-Flores, Jesús; Rico-Martínez, Roberto; Silva-Briano, Marcelo; Rubio-Franchini, Isidoro;     Show all 5 Authors
Source:
Aquatic toxicology 2012 v.109 pp. 127-132
ISSN:
0166-445X
Subject:
Brachionus calyciflorus; X-radiation; absorption; bioaccumulation factor; digestive system; freshwater; granules; histochemistry; lead; scanning electron microscopy
Abstract:
... We studied how lead is bioconcentrated and distributed in the rotifer Brachionus calyciflorus using metal histochemistry to locate lead granules, Leadmium Green® analysis to establish the route of uptake, atomic absorption to determined the bioconcentration factor (BCF), and detected the presence of microelements in the cuticle by X-ray microanalysis with scanning electron microscopy. Our results ...
DOI:
10.1016/j.aquatox.2011.12.007
PubMed:
22210501

3. Clinical case of cerebral amebiasis caused by E. histolytica

Author:
Ventura-Juárez, Javier,   et al.   ; Maldonado-Barrera, Cinthya A.; Campos-Esparza, Maria del Rosario; Muñoz-Fernández, Luis; Victoria-Hernández, Joaquin A.; Campos-Rodríguez, Rafael; Talamás-Rohana, Patricia;     Show all 7 Authors
Source:
Parasitology research 2012 v.110 no.3 pp. 1291-1296
ISSN:
0932-0113
Subject:
Entamoeba histolytica; Naegleria fowleri; abscess; amebiasis; antibodies; biopsy; blood flow; brain; colon; etiological agents; fluorescent antibody technique; necropsy; proteins; tomography; trophozoites
Abstract:
... Although amebic brain abscess is a rare form of invasive amebiasis, when present, it is frequently lethal. This disorder always begins with the infection of the colon by Entamoeba histolytica trophozoites, which then travel to extra-intestinal tissues through the bloodstream. Amebic brain abscesses are produced when trophozoites invade the central nervous system. Computerized axial tomography scan ...
DOI:
10.1007/s00436-011-2617-8
PubMed:
21870245

4. Adverse effects and bioconcentration of chromium in two freshwater rotifer species

Author:
Ventura-Juárez, Javier,   et al.   ; Hernández-Ruiz, Esmeralda; Alvarado-Flores, Jesús; Rubio-Franchini, Isidoro; Rico-Martínez, Roberto;     Show all 5 Authors
Source:
Chemosphere 2016 v.158 pp. 107-115
ISSN:
0045-6535
Subject:
Brachionus calyciflorus; X-radiation; absorption; adverse effects; bioaccumulation factor; chromium; elemental composition; energy; freshwater; lethal concentration 50; metallothionein; toxicity
Abstract:
... Bioaccumulation of trivalent (CrIII) and hexavalent chromium (CrVI), and its adverse effects were studied in two rotifer species: Brachionus calyciflorus (two different strains), and Lecane quadridentata. Median Lethal Concentration (LC50) at 24 h of both species showed that CrVI is highly toxic: LC50 ranges from 4.7 × 10⁻⁵ to 4 × 10⁻⁶ mg L⁻¹), compared with CrIII: LC50 ranges from 0.64 to 1.279 m ...
DOI:
10.1016/j.chemosphere.2016.05.067

5. Modulation of innate immune response by the vagus nerve in experimental hepatic amebiasis in rats

Author:
Ventura-Juárez, Javier,   et al.   ; Martínez-Jaimes, Mercedes D.; García-Lorenzana, Mario; Muñoz-Ortega, Martin H.; Quintanar-Stephano, Andrés; Ávila-Blanco, Manuel E.; García-Agueda, Carlos E.;     Show all 7 Authors
Source:
Experimental parasitology 2016 v.169 pp. 90-101
ISSN:
0014-4894
Subject:
Entamoeba histolytica; amebiasis; antibodies; collagen; death; glycogen; immunomodulation; innate immunity; innervation; lectins; liver; macrophages; microbial detection; models; myeloperoxidase; natural killer cells; neutrophils; parasites; parasympathetic nervous system; pathogens; rabbits; rats; stomach; vagus nerve
Abstract:
... The parasympathetic nervous system has a crucial role in immunomodulation of the vagus nerve, its structure provides a pathogen detection system, and a negative feedback to the immune system after the pathogenic agent has been eliminated. Amebiasis is a disease caused by the protozoan parasite Entamoeba histolytica, considered the third leading cause of death in the world. The rats are used as a n ...
DOI:
10.1016/j.exppara.2016.07.008

6. Antioxidant defense of Nrf2 vs pro-inflammatory system of NF-κB during the amoebic liver infection in hamster

Author:
VENTURA-JUÁREZ, JAVIER,   et al.   ; ALDABA-MURUATO, LISETH R.; MUÑOZ-ORTEGA, MARTIN H.; CAMPOS-ESPARZA, MARÍA DEL R.; MACÍAS-PÉREZ, JOSÉ R.; MÁRQUEZ-MUÑOZ, NAYELI A.; VILLALOBOS-SANTOS, ANA G.;     Show all 7 Authors
Source:
Parasitology 2017 v.144 no.4 pp. 384-393
ISSN:
1469-8161
Subject:
Entamoeba histolytica; Western blotting; alanine transaminase; alkaline phosphatase; antioxidant activity; antioxidants; blood serum; caspase-3; catalase; defense mechanisms; etiological agents; gamma-glutamyltransferase; glycogen; glycogen (starch) synthase; hamsters; heme oxygenase (biliverdin-producing); interleukin-1beta; liver; liver abscess; necrosis; neoplasms; oxidative stress; superoxide dismutase; tau-protein kinase; toxicity; transcription factor NF-kappa B; tumor necrosis factor-alpha
Abstract:
... Entamoeba histolytica is the causative agent of amoebic liver abscess (ALA), which course with an uncontrolled inflammation and nitro-oxidative stresses, although it is well known that amoeba has an effective defence mechanisms against this toxic environment, the underlying molecular factors responsible for progression of tissue damage remain largely unknown. The purpose of the present study was t ...
DOI:
10.1017/S0031182016001967
PubMed:
27876112

7. An anti-amoebic vaccine: generation of the recombinant antigen LC3 from Entamoeba histolytica linked to mutated exotoxin A (PEΔIII) via the Pichia pastoris system

Author:
Ventura-Juárez, Javier,   et al.   ; Martínez-Hernández, Sandra Luz; Cervantes-García, Daniel; Muñoz-Ortega, Martín; Aldaba-Muruato, Liseth R.; Loera-Muro, Victor M.; Ascacio-Martínez, Jorge A.; de Jesús Loera-Arias, María; de Oca-Luna, Roberto Montes;     Show all 9 Authors
Source:
Biotechnology letters 2017 v.39 no.8 pp. 1149-1157
ISSN:
0141-5492
Subject:
hamsters; transgenes; Komagataella pastoris; antigens; glycosylation; antibodies; polyacrylamide gel electrophoresis; polymerase chain reaction; recombinant fusion proteins; Entamoeba histolytica; staining; Western blotting; clones; plasmids; synthetic genes; vaccines; immunization; Pseudomonas aeruginosa; exotoxins
Abstract:
... OBJECTIVE: To generate an immunogenic chimeric protein containing the Entamoeba histolytica LC3 fragment fused to the retrograde delivery domains of exotoxin A of Pseudomonas aeruginosa and KDEL3 for use as an effective vaccine. RESULTS: A codon-optimized synthetic gene encoding the PEΔIII-LC3-KDEL3 fusion construct was designed for expression in Pichia pastoris. This transgene was subcloned into ...
DOI:
10.1007/s10529-017-2341-2

8. Morphological changes and phagocytic activity during the interaction of human neutrophils with Sporothrix schenckii: An in vitro model

Author:
Ventura-Juárez, Javier,   et al.   ; Curtiellas-Piñol, Vicente; Ruiz-Baca, Estela; Romo-Lozano, Yolanda;     Show all 4 Authors
Source:
Microbial pathogenesis 2019 v.129 pp. 56-63
ISSN:
0882-4010
Subject:
Sporothrix schenckii; coculture; conidia; histopathology; humans; models; morphs; neutrophils; phagocytosis; scanning electron microscopy; viability; yeasts
Abstract:
... Histopathological studies of human sporotrichosis lesions show pyogenic and granulomatous processes in which polymorphonuclear neutrophils (PMNs) play a central role. Few studies regarding the events associated with the interaction of human PMNs with Sporothrix schenckii have been made despite their importance in the clinical manifestations of the disease. In this study, human PMNs were co-culture ...
DOI:
10.1016/j.micpath.2019.01.041