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Cárdenas G, Chávez-Canales M, Espinosa AM, Jordán-Ríos A, Malagon DA, Murillo MFM, Araujo LVT, Campos RLB, Wong-Chew RM, González LER, Cresencio KI, Velázquez EG, de la Cerda MR, Leyva Y, Hernández-Ruiz J, Hernández-Medel ML, León-Hernández M, Quero KM, Monciváis AS, Sarmiento EB, Reynoso RIA, Reyes DM, Del Río Ambriz LR, Hernández JSG, Cruz J, Ferrer SIV, Huerta L, Fierro NA, Hernández M, Pérez-Tapia M, Meneses G, Rosas G, Hernández-Aceves JA, Cervantes-Torres J, Valdez RA, Rodríguez AF, Espíndola-Arriaga E, Ortiz M, Salazar EA, Barba CC, Besedovsky H, Romano MC, Jung H, Bobes RJ, Soldevila G, López-Alvarenga JC, Fragoso G, Laclette JP, Sciutto E. Intranasal Versus Intravenous Dexamethasone to Treat Hospitalized COVID-19 Patients: A Randomized Multicenter Clinical Trial. Arch Med Res 2024; 55:102960. [PMID: 38290199 DOI: 10.1016/j.arcmed.2024.102960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 12/04/2023] [Accepted: 01/16/2024] [Indexed: 02/01/2024]
Abstract
BACKGROUND SARS-CoV2 induces flu-like symptoms that can rapidly progress to severe acute lung injury and even death. The virus also invades the central nervous system (CNS), causing neuroinflammation and death from central failure. Intravenous (IV) or oral dexamethasone (DXM) reduced 28 d mortality in patients who required supplemental oxygen compared to those who received conventional care alone. Through these routes, DMX fails to reach therapeutic levels in the CNS. In contrast, the intranasal (IN) route produces therapeutic levels of DXM in the CNS, even at low doses, with similar systemic bioavailability. AIMS To compare IN vs. IV DXM treatment in hospitalized patients with COVID-19. METHODS A controlled, multicenter, open-label trial. Patients with COVID-19 (69) were randomly assigned to receive IN-DXM (0.12 mg/kg for three days, followed by 0.6 mg/kg for up to seven days) or IV-DXM (6 mg/d for 10 d). The primary outcome was clinical improvement, as defined by the National Early Warning Score (NEWS) ordinal scale. The secondary outcome was death at 28 d between IV and IN patients. Effects of both treatments on biochemical and immunoinflammatory profiles were also recorded. RESULTS Initially, no significant differences in clinical severity, biometrics, and immunoinflammatory parameters were found between both groups. The NEWS-2 score was reduced, in 23 IN-DXM treated patients, with no significant variations in the 46 IV-DXM treated ones. Ten IV-DXM-treated patients and only one IN-DXM patient died. CONCLUSIONS IN-DMX reduced NEWS-2 and mortality more efficiently than IV-DXM, suggesting that IN is a more efficient route of DXM administration.
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Affiliation(s)
- Graciela Cárdenas
- Neurology Department, Instituto Nacional de Neurología y Neurocirugía, Mexico City, Mexico
| | - María Chávez-Canales
- Research Unit Universidad Autónoma de Mexico, Instituto Nacional de Cardiología Ignacio Chávez and Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Ana María Espinosa
- Clinical Pharmacology Unit, Hospital General de México Dr. Eduardo Liceaga, Mexico City, Mexico
| | | | - Daniel Anica Malagon
- Clinical Pharmacology Unit, Hospital General de México Dr. Eduardo Liceaga, Mexico City, Mexico
| | | | | | | | - Rosa María Wong-Chew
- Faculty of Medicine, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | | | | | | | | | - Yoana Leyva
- Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
| | - Joselin Hernández-Ruiz
- Clinical Pharmacology Unit, Hospital General de México Dr. Eduardo Liceaga, Mexico City, Mexico
| | | | - Mireya León-Hernández
- Clinical Pharmacology Unit, Hospital General de México Dr. Eduardo Liceaga, Mexico City, Mexico
| | - Karen Medina Quero
- Hospital Militar, Secretaría de la Defensa Nacional, Mexico City, Mexico
| | | | | | | | | | | | | | - Jocelyn Cruz
- Neurology Department, Instituto Nacional de Neurología y Neurocirugía, Mexico City, Mexico
| | - Sergio Iván Valdés Ferrer
- Neurology and Psychiatry Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Leonor Huerta
- Inmunology Department, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Nora Alma Fierro
- Inmunology Department, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Marisela Hernández
- Inmunology Department, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Mayra Pérez-Tapia
- Bioprocess Development and Research Unit, Escuela Nacional de Ciencias Biológicas del Instituto Politécnico Nacional, Mexico City, Mexico
| | - Gabriela Meneses
- Instituto de Diagnóstico y Referencia Epidemiológicos Dr. Manuel Martínez Báez, Mexico City, Mexico
| | - Gabriela Rosas
- Faculty of Medicine, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Juan Alberto Hernández-Aceves
- Inmunology Department, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Jaquelynne Cervantes-Torres
- Inmunology Department, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Ricardo A Valdez
- Physiology, Biophysics and Neurosciences Department, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, Mexico
| | - Anai Fuentes Rodríguez
- National Flow Cytometry Laboratory, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México
| | - Erick Espíndola-Arriaga
- National Flow Cytometry Laboratory, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México
| | - Mauricio Ortiz
- National Flow Cytometry Laboratory, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México
| | - Evelyn Alvarez Salazar
- National Flow Cytometry Laboratory, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México
| | - Carlos Castellanos Barba
- National Flow Cytometry Laboratory, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México
| | - Hugo Besedovsky
- Institute of Physiology and Pathophysiology, Marburg, Germany
| | - Marta C Romano
- Physiology, Biophysics and Neurosciences Department, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, Mexico
| | - Helgi Jung
- Faculty of Chemistry, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Raúl J Bobes
- Inmunology Department, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Gloria Soldevila
- Inmunology Department, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico; National Flow Cytometry Laboratory, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México
| | | | - Gladis Fragoso
- Inmunology Department, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Juan Pedro Laclette
- Inmunology Department, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Edda Sciutto
- Inmunology Department, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico.
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Borjas-García SE, Martínez-Torres P, Medina-Flores A, Rosas G, Veléz-Navarrete SJ, Viramontes-Gamboa G. Synthesis of Mesoporous Zirconia and Mesoporous Zirconia doped with Yttria by Using Pluronic F-127. Microsc Microanal 2023; 29:497-498. [PMID: 37613097 DOI: 10.1093/micmic/ozad067.236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- S E Borjas-García
- Instituto de Física y Matemáticas, UMSNH, Morelia, Michoacán, México
| | - P Martínez-Torres
- Instituto de Física y Matemáticas, UMSNH, Morelia, Michoacán, México
| | - A Medina-Flores
- Instituto de Investigación en Metalurgia y Materiales, UMSNH, Morelia, Michoacán, México
| | - G Rosas
- Instituto de Investigación en Metalurgia y Materiales, UMSNH, Morelia, Michoacán, México
| | - S J Veléz-Navarrete
- Instituto de Investigaciones Sobre los Recursos Naturales, UMSNH, Morelia, Michoacán, México
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Montes-de-Oca LM, Martinez-Torres P, Vargas-Correa JA, Rosas G, Borjas-García SE. Synthesis of Mesoporous Cerium Oxide Nanoparticles from Pluronic F127 as template. Microsc Microanal 2023; 29:2042-2043. [PMID: 37612986 DOI: 10.1093/micmic/ozad067.1055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- Luis M Montes-de-Oca
- Centro de Estudios Tecnológico Industrial y de Servicios No. 120. Morelia, Michoacán, México
| | - P Martinez-Torres
- Instituto de Física y Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Jesus A Vargas-Correa
- Facultad de Ciencias Físico-Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - G Rosas
- Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - S E Borjas-García
- Instituto de Física y Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
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Frutis-Murillo M, López-Meza JE, Esparza R, Castro NC, Rosas G. Synthesis of Gold Nanoparticles Using Satureja macrostema Extract and their Evaluation in MCF-7 Cells. Microsc Microanal 2023; 29:1246-1247. [PMID: 37613674 DOI: 10.1093/micmic/ozad067.639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- Minerva Frutis-Murillo
- Universidad Michoacana de San Nicolás de Hidalgo-Instituto de Investigación en Metalurgia y Materiales, Morelia, Mich., México
| | - Joel E López-Meza
- Universidad Michoacana de San Nicolás de Hidalgo-Centro Multidisciplinario en Estudios en Biotecnología, Morelia, Mich., México
| | - R Esparza
- Universidad Nacional Autónoma de México- Centro de Física Aplicada y Tecnología Avanzada, Querétaro
| | | | - G Rosas
- Universidad Michoacana de San Nicolás de Hidalgo-Instituto de Investigación en Metalurgia y Materiales, Morelia, Mich., México
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Espinoza JA, Navarrete MI, Linares R, Chaparro-Ortega A, Ramírez DA, Rosas G, Vieyra E, Domínguez R, Morales-Ledesma L. Effects of chronic exposure to cold stress on ovarian functions in prepubertal rats. Reprod Biol 2023; 23:100756. [PMID: 36924552 DOI: 10.1016/j.repbio.2023.100756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/23/2023] [Accepted: 03/06/2023] [Indexed: 03/17/2023]
Abstract
Ovarian functions are modulated by the hypothalamus-pituitary-ovary axis and neural signals. Stress modifies the activity of the sympathetic nervous system. In adult female rats, cold stress results in higher noradrenergic and steroidogenic activity of the ovary, anovulation and the presence of ovarian cysts; however, it is unknown whether this response occurs in prepubertal rats. The purpose of this study was to analyse the effects of cold stress initiated in the prepubertal stage of female rats on ovarian function. Female rats 24 days old were exposed to three, five or eight weeks of cold stress. Autopsies were performed at the end of each stress period. The parameters analysed were the number of ova shed by ovulating animals; the number of ovulating animals; the serum concentrations of progesterone, testosterone, and oestradiol; and the ovarian concentrations of norepinephrine and 3-methoxy-4-hydroxyphenyl-glycol. Our results show that chronic cold stress applied to prepubertal rats did not modify the number of ovulating animals, the total number of ova shed, or progesterone and testosterone concentrations in any of the periods analysed. Oestradiol concentration was lower in the animals exposed to five or eight weeks of stress. The ovarian norepinephrine concentration was higher in the animals exposed to three weeks of stress and was lower at eight weeks of stress. No changes in ovarian morphology were observed. Our data suggest that the changes in noradrenergic activity resulting from chronic cold stress experienced in the prepubertal stage do not modify ovarian architecture or affect the ovulatory response in adulthood.
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Affiliation(s)
- Julieta A Espinoza
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico
| | - María I Navarrete
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico
| | - Rosa Linares
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico; Biology of Reproduction Research Unit, Laboratorio de Endocrinología, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico
| | - Andrea Chaparro-Ortega
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico
| | - Deyra A Ramírez
- Facultad de Estudios Superiores Zaragoza Campus III, UNAM., CP 90640 México, San Miguel Contla, Tlaxcala, Mexico
| | - Gabriela Rosas
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico
| | - Elizabeth Vieyra
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico; Biology of Reproduction Research Unit, Chronobiology of Reproduction Research Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico
| | - Leticia Morales-Ledesma
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico.
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Vieyra E, García JC, Zarco HA, Linares R, Rosas G, Ramírez DA, Chaparro A, Espinoza JA, Domínguez R, Morales-Ledesma L. Suprachiasmatic nucleus and vagus nerve trigger preovulatory LH and ovulation. Reproduction 2023; 165:147-157. [PMID: 36342662 DOI: 10.1530/rep-22-0119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 11/07/2022] [Indexed: 11/09/2022]
Abstract
In brief In the proestrus day, the neural and endocrine signals modulate ovarian function. This study shows vagus nerve plays a role in the multisynaptic pathways of communication between the suprachiasmatic nucleus and the ovaries where such neural information determines ovulation. Abstract The suprachiasmatic nucleus (SCN) regulates the activity of several peripheral organs through a parasympathetic-sympathetic pathway. Previously, we demonstrated that atropine (ATR) microinjection in the right SCN of rats during proestrus blocks ovulation. In the present study, we analysed whether the vagus nerve is one of the neural pathways by which the SCN regulates ovulation. For this, CIIZ-V strain cyclic rats on the day of proestrus were microinjected with a saline solution (vehicle) or ATR in the right or left SCN, which was followed by ventral laparotomy or ipsilateral vagotomy to the microinjection side. Some animal groups were sacrificed (i) on the same day of the surgery to measure oestradiol, progesterone and luteinizing hormone (LH) levels or (ii) at 24 h after surgery to evaluate ovulation. The left vagotomy in rats microinjected with ATR in the left SCN did not modify ovulation. In rats with ATR microinjection in the right SCN, the right vagotomy increased the levels of steroids and LH on the proestrus and ovulatory response. The present results suggest that the right vagus nerve plays a role in the multisynaptic pathways of communication between the SCN and the ovaries and indicate that such neural information participates in the regulation of the oestradiol and progesterone surge, which triggers the preovulatory peak of LH and determines ovulation.
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Affiliation(s)
- Elizabeth Vieyra
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México.,Biology of Reproduction Research Unit, Chronobiology of Reproduction Research Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Julio C García
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Hugo A Zarco
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Rosa Linares
- Biology of Reproduction Research Unit, Laboratorio de Endocrinología, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Gabriela Rosas
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Deyra A Ramírez
- Facultad de Estudios Superiores Zaragoza Campus III, UNAM, San Miguel Contla, Tlaxcala, México
| | - Andrea Chaparro
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Julieta A Espinoza
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Chronobiology of Reproduction Research Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Leticia Morales-Ledesma
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
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Landeros-Páramo L, Saavedra-Molina A, Cholico-González D, Rosas G. A comparative study of the catalytic activity between Ag nanoparticles and Ag flower-like particles synthesized by the Sedum praealtum aqueous extract. Particulate Science and Technology 2022. [DOI: 10.1080/02726351.2022.2156415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Luis Landeros-Páramo
- Instituto de Investigación en Metalurgia y Materiales, UMSNH, edificio U., Ciudad Universitaria, Morelia, México
| | - Alfredo Saavedra-Molina
- Instituto de Investigaciones Químico Biológicas, UMSNH, edificio B-3., Ciudad Universitaria, Morelia, México
| | - Diana Cholico-González
- Instituto de Investigación en Metalurgia y Materiales, UMSNH, edificio U., Ciudad Universitaria, Morelia, México
| | - G. Rosas
- Instituto de Investigación en Metalurgia y Materiales, UMSNH, edificio U., Ciudad Universitaria, Morelia, México
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Herrero-Calvillo R, Landeros-Páramo L, Santos-Ramos I, Rosas G. AgNPs/AgCl Cube-Shaped Particles Synthesized by a Green Method and Their Catalytic Application. J CLUST SCI 2022. [DOI: 10.1007/s10876-022-02361-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Landeros-Páramo L, Saavedra-Molina A, Gómez-Hurtado MA, Rosas G. The effect of AgNPS bio-functionalization on the cytotoxicity of the yeast Saccharomyces cerevisiae. 3 Biotech 2022; 12:196. [PMID: 35928500 PMCID: PMC9343563 DOI: 10.1007/s13205-022-03276-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 07/21/2022] [Indexed: 11/29/2022] Open
Abstract
This work used Sedum praealtum leaf extract to synthesize silver nanoparticles (AgNPs) in a single step. The cytotoxicity of AgNPs was studied with the yeast Saccharomyces cerevisiae W303-1. In addition, the antioxidant activity of the DPPH radical was studied both in the extract of S. praealtum and in the AgNPs. UV-Vis spectroscopy determined the presence of AgNPs by the location of the surface plasmon resonance (SPR) band at 434 nm. TEM and XRD analyzes show AgNPs with fcc structure and hemispherical morphology. Also, AgNPs range in size from 5 to 25 nm and have an average size of 14 nm. 1H NMR, FTIR, and UV-Vis spectroscopy techniques agreed that glycosidic compounds were the main phytochemical components responsible for the reduction and stabilization of AgNPs. In addition, AgNPs presented a maximum of 12% toxicity in yeast attributed to the generation of ROS. Consequently, there was low bioactivity because glycoside compounds cover the biosynthesized AgNPs from S. praealtum. These findings allow applications of AgNPs involving contact with mammals and higher organisms.
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Affiliation(s)
- L. Landeros-Páramo
- Instituto de Investigación en Metalurgia y Materiales, UMSNH, Edificio U., Ciudad Universitaria, C.P. 58030 Morelia, Michoacán México
| | - A. Saavedra-Molina
- Instituto de Investigaciones Químico Biológicas, UMSNH, edificio B-3., Ciudad Universitaria, C.P. 58030 Morelia, Michoacán México
| | - Mario A. Gómez-Hurtado
- Instituto de Investigaciones Químico Biológicas, UMSNH, edificio B-3., Ciudad Universitaria, C.P. 58030 Morelia, Michoacán México
| | - G. Rosas
- Instituto de Investigación en Metalurgia y Materiales, UMSNH, Edificio U., Ciudad Universitaria, C.P. 58030 Morelia, Michoacán México
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Cárdenas G, Chávez-Canales M, Espinosa AM, Jordán-Ríos A, Malagon DA, Murillo MFM, Araujo LVT, Campos RLB, Wong-Chew RM, González LER, Cresencio KI, Velázquez EG, de la Cerda MR, Leyva Y, Hernández-Ruiz J, Hernández-Medel ML, León-Hernández M, Quero KM, Monciváis AS, Díaz SH, Martínez IRZ, Martínez-Cuazitl A, Salazar INM, Sarmiento EB, Peña AF, Hernández PS, Reynoso RIA, Reyes DM, del Río Ambriz LR, Bonilla RAA, Cruz J, Huerta L, Fierro NA, Hernández M, Pérez-Tapia M, Meneses G, Espíndola-Arriaga E, Rosas G, Chinney A, Mendoza SR, Hernández-Aceves JA, Cervantes-Torres J, Rodríguez AF, Alor RO, Francisco SO, Salazar EA, Besedovsky H, Romano MC, Bobes RJ, Jung H, Soldevila G, López-Alvarenga J, Fragoso G, Laclette JP, Sciutto E. Intranasal dexamethasone: a new clinical trial for the control of inflammation and neuroinflammation in COVID-19 patients. Trials 2022; 23:148. [PMID: 35164840 PMCID: PMC8845269 DOI: 10.1186/s13063-022-06075-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 02/01/2022] [Indexed: 12/15/2022] Open
Abstract
Background By end December of 2021, COVID-19 has infected around 276 million individuals and caused over 5 million deaths worldwide. Infection results in dysregulated systemic inflammation, multi-organ dysfunction, and critical illness. Cells of the central nervous system are also affected, triggering an uncontrolled neuroinflammatory response. Low doses of glucocorticoids, administered orally or intravenously, reduce mortality among moderate and severe COVID-19 patients. However, low doses administered by these routes do not reach therapeutic levels in the CNS. In contrast, intranasally administered dexamethasone can result in therapeutic doses in the CNS even at low doses. Methods This is an approved open-label, multicenter, randomized controlled trial to compare the effectiveness of intranasal versus intravenous dexamethasone administered in low doses to moderate and severe COVID-19 adult patients. The protocol is conducted in five health institutions in Mexico City. A total of 120 patients will be randomized into two groups (intravenous vs. intranasal) at a 1:1 ratio. Both groups will be treated with the corresponding dexamethasone scheme for 10 days. The primary outcome of the study will be clinical improvement, defined as a statistically significant reduction in the NEWS-2 score of patients with intranasal versus intravenous dexamethasone administration. The secondary outcome will be the reduction in mortality during hospitalization. Conclusions This protocol is currently in progress to improve the efficacy of the standard therapeutic dexamethasone regimen for moderate and severe COVID-19 patients. Trial registration ClinicalTrials.govNCT04513184. Registered November 12, 2020. Approved by La Comisión Federal para la Protección contra Riesgos Sanitarios (COFEPRIS) with identification number DI/20/407/04/36. People are currently being recruited. Graphical abstract ![]()
REVIVAL is a multicenter, open-label, randomized, controlled study to compare the standard low doses of intravenous dexamethasone with weight-adjusted low doses of intranasal dexamethasone. Intranasal dexamethasone can reach the respiratory tract more effectively than intravenous administration. Intranasal dexamethasone can reach the central nervous system in therapeutic concentrations, even at low doses. REVIVAL aims to reduce central failures and sequelae by controlling not only systemic inflammation but also neuroinflammation.
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Morales-Ledesma L, Trujillo Hernández A, Ramírez MI, Rosas G, Linares R. Administration of a VIP-antagonist in vivo modifies ovarian hormone secretion in a rat model with polycystic ovary syndrome. Life Sci 2020; 265:118792. [PMID: 33220286 DOI: 10.1016/j.lfs.2020.118792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 11/06/2020] [Accepted: 11/16/2020] [Indexed: 10/23/2022]
Abstract
AIMS In the cyclic rat in estrus, the vasoactive intestinal peptide (VIP) has an impact on ovarian function, which depends on the endocrine status of the animal. In this work, we aimed to clarify the participation of VIP in the pathophysiological condition of polycystic ovary syndrome (PCOS) using a model of PCOS induced by estradiol valerate (EV-PCOS) in rats. MAIN METHODS In the cyclic rat in estrus and in the EV-PCOS model, we analyzed the acute effects of blocking VIP receptors with the use of an antagonist (Ant-VIP) injected into the left or right ovarian bursa on the steroidogenic response and ovarian catecholamine levels. KEY FINDINGS In the cyclic animal in estrus, the treatment with Ant-VIP in the left ovarian bursa resulted in a reduction in testosterone serum levels and in ovarian levels of dopamine and 3,4-dihydroxyphenylacetic acid (DOPAC), without changes in 4-hydroxy-3-methoxyphenyl (MHPG) and norepinephrine (NE). When the treatment was applied on the right side, only MHPG levels increased. In the EV-PCOS model, the treatment with Ant-VIP in the left ovarian bursa increased testosterone, estradiol, MHPG, and NE levels. When the treatment was performed on the right side, progesterone levels decreased and estradiol increased, without changes in ovarian catecholamines. SIGNIFICANCE The binding of VIP to its receptors differentially regulates steroidogenesis in the cyclic animal in estrus and in the EV-PCOS model. The blocking of VIP signaling produces changes in ovarian catecholamines.
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Affiliation(s)
- Leticia Morales-Ledesma
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, México City, Mexico.
| | | | - María Isabel Ramírez
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, México City, Mexico
| | - Gabriela Rosas
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, México City, Mexico
| | - Rosa Linares
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, México City, Mexico
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Villalpando M, Saavedra-Molina A, Rosas G. A facile synthesis of silver nanowires and their evaluation in the mitochondrial membrane potential. Mater Sci Eng C Mater Biol Appl 2020; 114:110973. [PMID: 32994023 DOI: 10.1016/j.msec.2020.110973] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 04/13/2020] [Accepted: 04/15/2020] [Indexed: 12/29/2022]
Abstract
Silver nanowires (AgNWs) with a high-aspect-ratio were successfully synthesized by a green method using Lavandula angustifolia plant extract. The morphology of the AgNWs was evaluated as a function of the concentration of precursor salt and nucleating agent. Furthermore, AgNWs were analyzed in a biological model using rat liver mitochondria by measuring their effect on membrane potential. The scanning electron microscopy (SEM), X-ray diffraction (XRD), and transmission electron microscopy (TEM) techniques structurally characterized the nanowires obtained. Also, ultraviolet-visible spectroscopy (UV-Vis) investigated the optical properties of AgNWs. Structural studies show AgNWs fcc with lengths up to 100 μm and diameters ranging from 60 to 130 nm growing in the [110] orientation. Both the CuSO4 nucleating agent and the centrifugation process are essential for the growth of nanowires. Furthermore, inhibition of mitochondrial membrane potential (MMP) depends on the concentration of the nanowires (NWs), suggesting dissipation of the electron transport chain. In this way, AgNWs can be used as a potential tool to verify biological reactions, such as modulation of metabolic pathways, together with the evaluation of a possible influence of biotic or abiotic factors in organisms.
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Affiliation(s)
- M Villalpando
- Instituto de Investigaciones en Metalurgia y Materiales, UMSNH, edificio U., Ciudad Universitaria, C.P. 58000 Morelia, Michoacán, Mexico.
| | - Alfredo Saavedra-Molina
- Instituto de Investigaciones Químico Biológicas, UMSNH, edificio B-3, Ciudad Universitaria, C.P. 58000 Morelia, Michoacán, Mexico.
| | - G Rosas
- Instituto de Investigaciones en Metalurgia y Materiales, UMSNH, edificio U., Ciudad Universitaria, C.P. 58000 Morelia, Michoacán, Mexico.
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Venegas B, De León Gordillo LY, Rosas G, Espinoza JA, Morán C, Domínguez R, Morales-Ledesma L. In rats with estradiol valerate-induced polycystic ovary syndrome, the acute blockade of ovarian β-adrenoreceptors improve ovulation. Reprod Biol Endocrinol 2019; 17:95. [PMID: 31744506 PMCID: PMC6862835 DOI: 10.1186/s12958-019-0539-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 11/04/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Polycystic ovary syndrome is characterized by hyperactivity of the ovarian sympathetic nervous system, increases in the content and release of norepinephrine, as well as decreases in the number of β-adrenoreceptors. In the present study, β-adrenoreceptors in the ovaries of rats with polycystic ovary syndrome were blocked and analyzed the resultant effects on ovulation, hormone secretion and the enzymes responsible for the synthesis of catecholamines. METHODS At 60 days of age, vehicle or estradiol valerate-treated rats were injected with propranolol [10- 4 M] into the ovarian bursas on oestrus day. The animals were sacrificed on the next day of oestrus, and the ovulation response, the steroid hormone levels in the serum and the immunoreactivity of tyrosine hydroxylase and dopamine β-hydroxylase in the ovaries were measured. RESULTS In animals with the induction of polycystic ovary syndrome and β-adrenoreceptor blocking, ovulation was restored in more than half of the animals and resulted in decreased hyperandrogenism with respect to the levels observed in the estradiol valerate-treated group. Tyrosine hydroxylase and dopamine β-hydroxylase were present in the theca cells of the growing follicles and the interstitial gland. Injection of propranolol restored the tyrosine hydroxylase and ovarian dopamine β-hydroxylase levels in rats with polycystic ovary syndrome induction. CONCLUSIONS The results suggest that a single injection into the ovarian bursas of propranolol, a nonselective antagonist of β-adrenoreceptor receptors, decreases the serum testosterone concentration and the formation of ovarian cysts, improving the ovulation rate that accompanies lower levels of tyrosine hydroxylase and dopamine β-hydroxylase in the ovary.
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Affiliation(s)
- Berenice Venegas
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP, 15000, México, DF, Mexico
- Área de Procesos Celulares Fundamentales, Facultad de Ciencias Biológicas, Benemérita Universidad Autónoma de Puebla, 72570, Puebla, CP, Mexico
| | - Lizzbeth Yureli De León Gordillo
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP, 15000, México, DF, Mexico
| | - Gabriela Rosas
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP, 15000, México, DF, Mexico
| | - Julieta A Espinoza
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP, 15000, México, DF, Mexico
| | - Carolina Morán
- Centro de Investigación en Fisicoquímica de Materiales, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP, 15000, México, DF, Mexico
| | - Leticia Morales-Ledesma
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP, 15000, México, DF, Mexico.
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Linares R, Rosas G, Vieyra E, Ramírez DA, Velázquez DR, Espinoza JA, Morán C, Domínguez R, Morales-Ledesma L. In Adult Rats With Polycystic Ovarian Syndrome, Unilateral or Bilateral Vagotomy Modifies the Noradrenergic Concentration in the Ovaries and the Celiac Superior Mesenteric Ganglia in Different Ways. Front Physiol 2019; 10:1309. [PMID: 31695622 PMCID: PMC6817458 DOI: 10.3389/fphys.2019.01309] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 09/30/2019] [Indexed: 11/13/2022] Open
Abstract
In rats with polycystic ovarian syndrome (PCOS) induced by estradiol valerate (EV) injection, sectioning of the vagus nerve in the juvenile stage restores ovulatory function, suggesting that the vagus nerve stimulates the onset and development of PCOS. We analyzed whether in adult rats, the role played by the vagus nerve in PCOS development is associated with the nerve’s regulation of noradrenergic activity in the celiac superior mesenteric ganglion (CSMG). Ten-day-old rats were injected with corn oil [vehicle (Vh)] or EV (2 mg). At 76 days of age, rats injected with Vh or EV were subjected to sham surgery or the sectioning of one or both vagus nerves (vagotomy). The animals were sacrificed at 80–82 days of age at vaginal estrus smear. Compared to Vh-treated animals, EV-induced PCOS rats showed a lack of ovulation, the presence of follicular cysts, and a high concentration of testosterone, without changes in noradrenaline concentrations in the CSMG or ovaries. In PCOS rats, sham surgery lowered serum testosterone and noradrenaline concentrations in the CSMG but did not restore ovulation. In animals with PCOS, vagotomy lowered testosterone concentrations to a larger degree than in sham-surgery animals. The ovaries of rats with PCOS and vagotomy showed fresh corpora lutea, indicating ovulation. In EV-treated rats with unilateral vagotomy, the concentration of noradrenaline in the CSMG was similar to that in rats with PCOS and sham surgery, which did not ovulate, while in the ovaries of PCOS rats with left or bilateral vagotomy, the noradrenaline concentration was lower than that in sham-surgery-treated animals. Our results suggest that the vagus nerve regulates PCOS development through a different mechanism than the increase in the noradrenergic activity in the CSMG; however, in ovaries, the restoration of ovulation is associated with a decrease in ovarian noradrenaline.
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Affiliation(s)
- Rosa Linares
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Gabriela Rosas
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Elizabeth Vieyra
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Deyra A Ramírez
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Daniel R Velázquez
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Julieta A Espinoza
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Carolina Morán
- Centro de Investigación en Fisicoquímica de Materiales, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Roberto Domínguez
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Leticia Morales-Ledesma
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
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Aguilar M, Esparza R, Rosas G. Time-dependent facile synthesis of CuO hedgehog-like nanostructures and their catalytic activity. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2019.05.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Vieyra E, Ramírez DA, Linares R, Rosas G, Domínguez R, Morales‐Ledesma L. Stimulation of nicotinic receptors in the suprachiasmatic nucleus results in a higher number of growing follicles and ova shed. Exp Physiol 2019; 104:1179-1189. [DOI: 10.1113/ep087538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 06/24/2019] [Indexed: 01/05/2023]
Affiliation(s)
- Elizabeth Vieyra
- Biology of Reproduction Research Unit, Physiology of Reproduction LaboratoryFacultad de Estudios Superiores Zaragoza UNAM, AP 9‐020 CP 15000 México D.F
- Biology of Reproduction Research Unit, Laboratorio de Investigación en Cronobiología y ReproducciónFacultad de Estudios Superiores Zaragoza UNAM, AP 9‐020 CP 15000 México D.F
| | - Deyra A. Ramírez
- Biology of Reproduction Research Unit, Physiology of Reproduction LaboratoryFacultad de Estudios Superiores Zaragoza UNAM, AP 9‐020 CP 15000 México D.F
| | - Rosa Linares
- Biology of Reproduction Research Unit, Physiology of Reproduction LaboratoryFacultad de Estudios Superiores Zaragoza UNAM, AP 9‐020 CP 15000 México D.F
| | - Gabriela Rosas
- Biology of Reproduction Research Unit, Physiology of Reproduction LaboratoryFacultad de Estudios Superiores Zaragoza UNAM, AP 9‐020 CP 15000 México D.F
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Laboratorio de Investigación en Cronobiología y ReproducciónFacultad de Estudios Superiores Zaragoza UNAM, AP 9‐020 CP 15000 México D.F
| | - Leticia Morales‐Ledesma
- Biology of Reproduction Research Unit, Physiology of Reproduction LaboratoryFacultad de Estudios Superiores Zaragoza UNAM, AP 9‐020 CP 15000 México D.F
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López-Miranda JL, Esparza R, Rosas G, Pérez R, Estévez-González M. Catalytic and antibacterial properties of gold nanoparticles synthesized by a green approach for bioremediation applications. 3 Biotech 2019; 9:135. [PMID: 30863714 PMCID: PMC6409132 DOI: 10.1007/s13205-019-1666-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Accepted: 03/01/2019] [Indexed: 12/27/2022] Open
Abstract
In this work, we are proposing the green synthesis of gold nanoparticles (AuNPs) using aqueous extracts of A. triphylla and evaluating their antibacterial and catalytic properties. Characterization was performed by UV-Vis and FT-IR spectroscopies, X-ray diffraction, and transmission electron microscopy (TEM). Antibacterial activity of AuNPs was analyzed using E. coli and S. Aureus and catalytic activity was determined by the degradation of methylene blue and congo red. UV-Vis analysis showed an increase in AuNPs concentration by increasing the extract concentration, volume extract, and precursor salt concentration. The crystalline nature of AuNPs was corroborated by X-ray diffraction. TEM analysis showed nanoparticles with spherical morphology (mostly) and size between 40 and 60 nm. These results are novel because they showed a homogeneous morphology and a narrow size distribution which is difficult to obtain in green synthesis processes. Results of antibacterial activity showed inhibition zones of 11.3 mm and 10.6 mm for S. Aureus and E. coli, respectively, indicating the bactericidal capacity of the nanoparticles. The degradation periods for methylene blue and congo red were 5 and 11 min, respectively, which are very short compared with previous reports. These results are of great significance for catalytic applications. Therefore, A. triphylla extracts made possible AuNPs synthesis and the nanoparticles obtained can be used as catalytic and antibacterial materials for water remediation.
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Affiliation(s)
- J. Luis López-Miranda
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, 76230 Santiago de Querétaro, Querétaro Mexico
| | - R. Esparza
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, 76230 Santiago de Querétaro, Querétaro Mexico
| | - G. Rosas
- Instituto de Investigaciones Metalúrgicas, UMSNH, edificio U, ciudad universitaria, 58060 Morelia Michoacán, Mexico
| | - R. Pérez
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, P.O. Box 48-3, 62251 Cuernavaca Morelos, Mexico
| | - M. Estévez-González
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, 76230 Santiago de Querétaro, Querétaro Mexico
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Giglio J, Rosas G, Basso M, Boné A, Savio E, Engler H. An alternative methodology for the determination of the radiochemical purity of 11C-methionine. EJNMMI Radiopharm Chem 2018. [PMCID: PMC6306374 DOI: 10.1186/s41181-018-0053-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Background Results Conclusion
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Lopez-Miranda JL, Vázquez González MA, Mares-Briones F, Cervantes-Chávez JA, Esparza R, Rosas G, Pérez R. Catalytic and antibacterial evaluation of silver nanoparticles synthesized by a green approach. Res Chem Intermed 2018. [DOI: 10.1007/s11164-018-3568-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Rosas G, Linares R, Ramírez DA, Vieyra E, Trujillo A, Domínguez R, Morales-Ledesma L. The Neural Signals of the Superior Ovarian Nerve Modulate in an Asymmetric Way the Ovarian Steroidogenic Response to the Vasoactive Intestinal Peptide. Front Physiol 2018; 9:1142. [PMID: 30177887 PMCID: PMC6110177 DOI: 10.3389/fphys.2018.01142] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 07/30/2018] [Indexed: 01/27/2023] Open
Abstract
The superior ovarian nerve (SON) provides neuropeptide-Y, norepinephrine and vasoactive intestinal peptide (VIP) to the ovaries. Ovarian steroidogenesis is modulated by the SON. In the cyclic rat, the acute steroidogenic response to ovarian microinjection of VIP is asymmetric and varies during the estrous cycle. In the present study, we analyze whether the differential effects of VIP in each ovary are modulated by the neural signals arriving through the SON. Cyclic female rats were submitted on diestrus-1, diestrus-2, proestrus, or estrus to a unilateral section of the SON, and immediately afterward, the denervated ovary was either microinjected or not with VIP. Animals were sacrificed 1 h after treatment. The injection of VIP into the left denervated ovary performed on diestrus-1 decreased progesterone levels in comparison with the left SON sectioning group; similar effects were observed on proestrus when VIP was injected into either of the denervated ovaries. Compared to the left SON sectioning group, VIP treatment into the left denervated ovary on diestrus-2 or proestrus decreased testosterone levels, whereas on diestrus-1, proestrus or estrus, the same treatment resulted in higher estradiol levels. Compared to the right SON sectioning group, VIP injected into the right denervated ovary yielded higher testosterone levels on diestrus-1 and estrus and lower testosterone levels on proestrus. VIP injection into the right denervated ovary increased estradiol levels on diestrus-2 or estrus while decreasing them on proestrus. Our results indicate that in the adult cyclic rat, the set neural signals arriving to the ovaries through the SON asymmetrically modulate the role of VIP on steroid hormone secretion, depending on the endocrine status of the animal. The results also support the hypothesis that the left and right ovary respond differently to the VIPergic stimulus.
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Affiliation(s)
- Gabriela Rosas
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de Mexico, Mexico City, Mexico
| | - Rosa Linares
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de Mexico, Mexico City, Mexico
| | - Deyra A Ramírez
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de Mexico, Mexico City, Mexico
| | - Elizabeth Vieyra
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de Mexico, Mexico City, Mexico
| | - Angélica Trujillo
- Benemérita Universidad Autónoma de Puebla, Facultad de Ciencias Biológicas, Puebla, Mexico
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de Mexico, Mexico City, Mexico
| | - Leticia Morales-Ledesma
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de Mexico, Mexico City, Mexico
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Trejo-Moreno C, Castro-Martínez G, Méndez-Martínez M, Jiménez-Ferrer JE, Pedraza-Chaverri J, Arrellín G, Zamilpa A, Medina-Campos ON, Lombardo-Earl G, Barrita-Cruz GJ, Hernández B, Ramírez CC, Santana MA, Fragoso G, Rosas G. Acetone fraction from Sechium edule (Jacq.) S.w. edible roots exhibits anti-endothelial dysfunction activity. J Ethnopharmacol 2018; 220:75-86. [PMID: 29501845 DOI: 10.1016/j.jep.2018.02.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 02/22/2018] [Accepted: 02/23/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE A recent ethnomedical survey on medicinal plants grown in Mexico revealed that Sechium edule (Jacq.) Sw. (Cucurbitaceae) is one of the most valued plant species to treat cardiovascular diseases, including hypertension. Fruits, young leaves, buds, stems, and tuberous roots of the plant are edible. Considering that endothelial dysfunction induced by Angiotensin II plays an important role in the pathogenesis of hypertension and is accompanied by a prooxidative condition, which in turn induces an inflammatory state, vascular remodeling, and tissue damage, and that S. edule has been reported to possess antioxidant, anti-inflammatory and antihypertensive activity, its capability to control endothelial dysfunction was also assessed. AIM OF THE STUDY To assess in vivo the anti-endothelial dysfunction activity of the acetone fraction (rSe-ACE) of the hydroalcoholic extract from S. edule roots. MATERIALS AND METHODS Endothelial dysfunction was induced in female C57BL/6 J mice by a daily intraperitoneal injection of angiotensin II for 10 weeks. Either rSe-ACE or losartan (as a control) were co-administered with angiotensin II for the same period. Blood pressure was measured at weeks 0, 5, and 10. Kidney extracts were prepared to determine IL1β, IL4, IL6, IL10, IL17, IFNγ, TNFα, and TGFβ levels by ELISA, along with the prooxidative status as assessed by the activity of antioxidant enzymes. The expression of ICAM-1 was evaluated by immunohistochemistry in kidney histological sections. Kidney and hepatic damage, as well as vascular tissue remodeling, were studied. RESULTS The rSe-ACE fraction administered at a dose of 10 mg/kg was able to control hypertension, as well as the prooxidative and proinflammatory status in kidney as efficiently as losartan, returning mice to normotensive levels. Additionally, the fraction was more efficient than losartan to prevent liver and kidney damage. Phytochemical characterization identified cinnamic acid as a major compound, and linoleic, palmitic, and myristic acids as the most abundant non-polar components in the mixture, previously reported to aid in the control of hypertension, inflammation, and oxidative stress, three important components of endothelial dysfunction. IN CONCLUSION this study demonstrated that rSe-ACE has anti-endothelial dysfunction activity in an experimental model and highlights the role of cinnamic acid and fatty acids in the observed effects.
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Affiliation(s)
- Celeste Trejo-Moreno
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos CP 62350, Mexico
| | - Gabriela Castro-Martínez
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos CP 62350, Mexico
| | - Marisol Méndez-Martínez
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos CP 62350, Mexico
| | - Jesús Enrique Jiménez-Ferrer
- Laboratorio de Farmacología, Centro de Investigaciones Biomédicas del Sur, Instituto Mexicano del Seguro Social, Xochitepec, Morelos CP 62790, Mexico
| | - José Pedraza-Chaverri
- Facultad de Química, Universidad Nacional Autónoma de México, Coyoacán, Ciudad de México CP 04510, Mexico
| | - Gerardo Arrellín
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos CP 62350, Mexico; Facultad de Ciencias de la Salud, Universidad Panamericana, Ciudad de México CP 03920, Mexico
| | - Alejandro Zamilpa
- Laboratorio de Farmacología, Centro de Investigaciones Biomédicas del Sur, Instituto Mexicano del Seguro Social, Xochitepec, Morelos CP 62790, Mexico
| | - Omar Noel Medina-Campos
- Facultad de Química, Universidad Nacional Autónoma de México, Coyoacán, Ciudad de México CP 04510, Mexico
| | - Galia Lombardo-Earl
- Laboratorio de Farmacología, Centro de Investigaciones Biomédicas del Sur, Instituto Mexicano del Seguro Social, Xochitepec, Morelos CP 62790, Mexico
| | - Gerardo Joel Barrita-Cruz
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos CP 62350, Mexico
| | - Beatriz Hernández
- Facultad de Medicina, Universidad Nacional Autónoma de México, Coyoacán, Ciudad de México CP 04510, Mexico
| | - Christian Carlos Ramírez
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos CP 62350, Mexico
| | - María Angélica Santana
- Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Chamilpa, Cuernavaca, Morelos CP 62209, Mexico
| | - Gladis Fragoso
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Coyoacán, Ciudad de México CP 04510, Mexico
| | - Gabriela Rosas
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos CP 62350, Mexico.
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Ayón-Núñez DA, Fragoso G, Espitia C, García-Varela M, Soberón X, Rosas G, Laclette JP, Bobes RJ. Identification and characterization of Taenia solium enolase as a plasminogen-binding protein. Acta Trop 2018; 182:69-79. [PMID: 29466706 DOI: 10.1016/j.actatropica.2018.02.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 02/13/2018] [Accepted: 02/15/2018] [Indexed: 12/19/2022]
Abstract
The larval stage of Taenia solium (cysticerci) is the causal agent of human and swine cysticercosis. When ingested by the host, T. solium eggs are activated and hatch in the intestine, releasing oncospheres that migrate to various tissues and evolve into cysticerci. Plasminogen (Plg) receptor proteins have been reported to play a role in migration processes for several pathogens. This work is aimed to identify Plg-binding proteins in T. solium cysticerci and determine whether T. solium recombinant enolase (rTsEnoA) is capable of specifically binding and activating human Plg. To identify Plg-binding proteins, a 2D-SDS-PAGE ligand blotting was performed, and recognized spots were identified by MS/MS. Seven proteins from T. solium cysticerci were found capable of binding Plg: fascicilin-1, fasciclin-2, enolase, MAPK, annexin, actin, and cytosolic malate dehydrogenase. To determine whether rTsEnoA binds human Plg, a ligand blotting was performed and the results were confirmed by ELISA both in the presence and absence of εACA, a competitive Plg inhibitor. Finally, rTsEnoA-bound Plg was activated to plasmin in the presence of tPA. To better understand the evolution of enolase isoforms in T. solium, a phylogenetic inference analysis including 75 enolase amino acid sequences was conducted. The origin of flatworm enolase isoforms, except for Eno4, is independent of their vertebrate counterparts. Therefore, herein we propose to designate tapeworm protein isoforms as A, B, C, and 4. In conclusion, recombinant enolase showed a strong plasminogen binding and activating activity in vitro. T. solium enolase could play a role in parasite invasion along with other plasminogen-binding proteins.
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Trejo-Moreno C, Castro-Martínez G, Méndez-Martínez M, Jiménez-Ferrer JE, Pedraza-Chaverri J, Arrellín G, Zamilpa-Álvarez A, Medina-Campos ON, Lombardo-Earl G, Barrita-Cruz GJ, Hernández B, Ramírez CC, Santana MA, Fragoso G, Rosas G. Data of the effects of acetone fraction from Sechium edule (Jacq.) S.w. edible roots in the kidney of endothelial dysfunction induced mice. Data Brief 2018; 18:448-453. [PMID: 29900200 PMCID: PMC5996300 DOI: 10.1016/j.dib.2018.03.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 03/08/2018] [Accepted: 03/12/2018] [Indexed: 11/24/2022] Open
Abstract
Endothelial dysfunction induced by Angiotensin II (AG II) plays an important role in the pathogenesis of hypertension and is accompanied by a prooxidative condition, which in turn induces an inflammatory state, vascular remodeling, and tissue damage including the kidney (Schmitt and Dirsch, 2009) [1]. New drugs that can control several of these pathologies are required. Sechium edule has been reported to possess antioxidant, anti-inflammatory and antihypertensive activity (Ibarra-Alvarado et al., 2010) [2]. This paper contains data complementary to those published in Journal of Ethnopharmacology (Moreno et al., 2018) [3], evaluating the effect in kidney of hypertensive mice of the acetone fraction from S. edule to control de pro-oxidative state, reduction of the inflammatory adhesion molecule (ICAM) and recruitment of inflammatory cells.
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Affiliation(s)
- Celeste Trejo-Moreno
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos CP 62350, Mexico
| | - Gabriela Castro-Martínez
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos CP 62350, Mexico
| | - Marisol Méndez-Martínez
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos CP 62350, Mexico
| | - Jesús Enrique Jiménez-Ferrer
- Laboratorio de Farmacología, Centro de Investigaciones Biomédicas del Sur, Instituto Mexicano del Seguro Social, Xochitepec, Morelos CP 62790, Mexico
| | - José Pedraza-Chaverri
- Facultad de Química, Universidad Autónoma de México, Coyoacán, Ciudad de México CP 04510, Mexico
| | - Gerardo Arrellín
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos CP 62350, Mexico
- Facultad de Ciencias de la Salud, Universidad Panamericana, Ciudad de México CP 03920, Mexico
| | - Alejandro Zamilpa-Álvarez
- Laboratorio de Farmacología, Centro de Investigaciones Biomédicas del Sur, Instituto Mexicano del Seguro Social, Xochitepec, Morelos CP 62790, Mexico
| | - Omar Noel Medina-Campos
- Facultad de Química, Universidad Autónoma de México, Coyoacán, Ciudad de México CP 04510, Mexico
| | - Galia Lombardo-Earl
- Laboratorio de Farmacología, Centro de Investigaciones Biomédicas del Sur, Instituto Mexicano del Seguro Social, Xochitepec, Morelos CP 62790, Mexico
| | - Gerardo Joel Barrita-Cruz
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos CP 62350, Mexico
| | - Beatriz Hernández
- Facultad de Medicina, Universidad Nacional Autónoma de México, Coyoacán, Ciudad de México CP 04510, Mexico
| | - Christian Carlos Ramírez
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos CP 62350, Mexico
| | - María Angélica Santana
- Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Chamilpa, Cuernavaca, Morelos CP 62209, Mexico
| | - Gladis Fragoso
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Coyoacán, Ciudad de México CP 04510, Mexico
| | - Gabriela Rosas
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos CP 62350, Mexico
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Guo Y, Wang N, Li G, Rosas G, Zang J, Ma Y, Liu J, Han W, Cao H. Direct and Indirect Effects of Penguin Feces on Microbiomes in Antarctic Ornithogenic Soils. Front Microbiol 2018; 9:552. [PMID: 29666609 PMCID: PMC5891643 DOI: 10.3389/fmicb.2018.00552] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 03/12/2018] [Indexed: 11/15/2022] Open
Abstract
Expansion of penguin activity in maritime Antarctica, under ice thaw, increases the chances of penguin feces affecting soil microbiomes. The detail of such effects begins to be revealed. By comparing soil geochemistry and microbiome composition inside (one site) and outside (three sites) of the rookery, we found significant effects of penguin feces on both. First, penguin feces change soil geochemistry, causing increased moisture content (MC) of ornithogenic soils and nutrients C, N, P, and Si in the rookery compared to non-rookery sites, but not pH. Second, penguin feces directly affect microbiome composition in the rookery, not those outside. Specifically, we found 4,364 operational taxonomical units (OTUs) in 404 genera in six main phyla: Proteobacteria, Actinobacteria, Gemmatimonadetes, Acidobacteria, Chloroflexi, and Bacteroidetes. Although the diversity is similar among the four sites, the composition is different. For example, penguin rookery has a lower abundance of Acidobacteria, Chloroflexi, and Nitrospirae but a higher abundance of Bacteroidetes, Firmicutes, and Thermomicrobia. Strikingly, the family Clostridiaceae of Firmicutes of penguin-feces origin is most abundant in the rookery than non-rookery sites with two most abundant genera, Tissierella and Proteiniclasticum. Redundancy analysis showed all measured geochemical factors are significant in structuring microbiomes, with MC showing the highest correlation. We further extracted 21 subnetworks of microbes which contain 4,318 of the 4,364 OTUs using network analysis and are closely correlated with all geochemical factors except pH. Our finding f penguin feces, directly and indirectly, affects soil microbiome suggests an important role of penguins in soil geochemistry and microbiome structure of maritime Antarctica.
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Affiliation(s)
- Yudong Guo
- Department of Bioengineering, College of Marine Sciences and Biological Engineering, Qingdao University of Science and Technology, Qingdao, China
| | - Nengfei Wang
- Key Lab of Marine Bioactive Substances, First Institute of Oceanography, State Oceanic Administration, Qingdao, China
| | - Gaoyang Li
- College of Computer Science and Technology, Jilin University, Changchun, China
| | - Gabriela Rosas
- Center for Fundamental and Applied Microbiomics, Biodesign Institute, Arizona State University, Tempe, AZ, United States
| | - Jiaye Zang
- Key Lab of Marine Bioactive Substances, First Institute of Oceanography, State Oceanic Administration, Qingdao, China
| | - Yue Ma
- Department of Bioengineering, College of Marine Sciences and Biological Engineering, Qingdao University of Science and Technology, Qingdao, China
| | - Jie Liu
- Department of Bioengineering, College of Marine Sciences and Biological Engineering, Qingdao University of Science and Technology, Qingdao, China
| | - Wenbing Han
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, China
| | - Huansheng Cao
- Center for Fundamental and Applied Microbiomics, Biodesign Institute, Arizona State University, Tempe, AZ, United States
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Bobes RJ, Navarrete-Perea J, Ochoa-Leyva A, Anaya VH, Hernández M, Cervantes-Torres J, Estrada K, Sánchez-Lopez F, Soberón X, Rosas G, Nunes CM, García-Varela M, Sotelo-Mundo RR, López-Zavala AA, Gevorkian G, Acero G, Laclette JP, Fragoso G, Sciutto E. Experimental and Theoretical Approaches To Investigate the Immunogenicity of Taenia solium-Derived KE7 Antigen. Infect Immun 2017; 85:e00395-17. [PMID: 28923896 PMCID: PMC5695116 DOI: 10.1128/iai.00395-17] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 09/11/2017] [Indexed: 11/20/2022] Open
Abstract
Taenia solium cysticercosis, a parasitic disease that affects human health in various regions of the world, is preventable by vaccination. Both the 97-amino-acid-long KETc7 peptide and its carboxyl-terminal, 18-amino-acid-long sequence (GK-1) are found in Taenia crassiceps Both peptides have proven protective capacity against cysticercosis and are part of the highly conserved, cestode-native, 264-amino-acid long protein KE7. KE7 belongs to a ubiquitously distributed family of proteins associated with membrane processes and may participate in several vital cell pathways. The aim of this study was to identify the T. solium KE7 (TsKE7) full-length protein and to determine its immunogenic properties. Recombinant TsKE7 (rTsKE7) was expressed in Escherichia coli Rosetta2 cells and used to obtain mouse polyclonal antibodies. Anti-rTsKE7 antibodies detected the expected native protein among the 350 spots developed from T. solium cyst vesicular fluid in a mass spectrometry-coupled immune proteomic analysis. These antibodies were then used to screen a phage-displayed 7-random-peptide library to map B-cell epitopes. The recognized phages displayed 9 peptides, with the consensus motif Y(F/Y)PS sequence, which includes YYYPS (named GK-1M, for being a GK-1 mimotope), exactly matching a part of GK-1. GK-1M was recognized by 58% of serum samples from cysticercotic pigs with 100% specificity but induced weak protection against murine cysticercosis. In silico analysis revealed a universal T-cell epitope(s) in native TsKE7 potentially capable of stimulating cytotoxic T lymphocytes and helper T lymphocytes under different major histocompatibility complex class I and class II mouse haplotypes. Altogether, these results provide a rationale for the efficacy of the KETc7, rTsKE7, and GK-1 peptides as vaccines.
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Affiliation(s)
- Raúl J Bobes
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México City, México
| | - José Navarrete-Perea
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México City, México
- Instituto Nacional de Medicina Genómica, México City, México
| | - Adrián Ochoa-Leyva
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Víctor Hugo Anaya
- Escuela Nacional de Estudios Superiores, Unidad Morelia, Universidad Nacional Autónoma de México, Morelia, Michoacán, México
| | - Marisela Hernández
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México City, México
| | | | - Karel Estrada
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Filiberto Sánchez-Lopez
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Xavier Soberón
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
- Instituto Nacional de Medicina Genómica, México City, México
| | - Gabriela Rosas
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
| | - Cáris Maroni Nunes
- UNESP, Universidade Estadual Paulista, Department of Animal Health and Production, Araçatuba, SP, Brazil
| | - Martín García-Varela
- Instituto de Biología, Universidad Nacional Autónoma de México, México City, México
| | - Rogerio Rafael Sotelo-Mundo
- Laboratorio de Estructura Biomolecular, Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD), Hermosillo, Sonora, México
| | - Alonso Alexis López-Zavala
- Laboratorio de Estructura Biomolecular, Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD), Hermosillo, Sonora, México
- Departamento de Ciencias Químico Biológicas, Universidad de Sonora, Hermosillo, Sonora, México
| | - Goar Gevorkian
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México City, México
| | - Gonzalo Acero
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México City, México
| | - Juan P Laclette
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México City, México
| | - Gladis Fragoso
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México City, México
| | - Edda Sciutto
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México City, México
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Fragoso G, Hernández M, Cervantes-Torres J, Ramírez-Aquino R, Chapula H, Villalobos N, Segura-Velázquez R, Figueroa A, Flores I, Jiménez H, Adalid L, Rosas G, Galvez L, Pezzat E, Monreal-Escalante E, Rosales-Mendoza S, Vazquez LG, Sciutto E. Transgenic papaya: a useful platform for oral vaccines. Planta 2017; 245:1037-1048. [PMID: 28194565 DOI: 10.1007/s00425-017-2658-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 01/31/2017] [Indexed: 06/06/2023]
Abstract
Transgenic papaya callus lines expressing the components of the S3Pvac vaccine constitute a stable platform to produce an oral vaccine against cysticercosis caused by Taenia solium or T. crassiceps. The development of effective delivery systems to cope with the reduced immunogenicity of new subunit vaccines is a priority in vaccinology. Herein, experimental evidence supporting a papaya-based platform to produce needle-free, recombinant, highly immunogenic vaccines is shown. Papaya (Carica papaya) callus lines were previously engineered by particle bombardment to express the three protective peptides of the S3Pvac anti-cysticercosis vaccine (KETc7, KETc12, KETc1). Calli were propagated in vitro, and a stable integration and expression of the target genes has been maintained, as confirmed by PCR, qRT-PCR, and HPLC. These results point papaya calli as a suitable platform for long-term transgenic expression of the vaccine peptides. The previously demonstrated protective immunogenic efficacy of S3Pvac-papaya orally administered to mice is herein confirmed in a wider dose-range and formulated with different delivery vehicles, adequate for oral vaccination. This protection is accompanied by an increase in anti-S3Pvac antibody titers and a delayed hypersensitivity response against the vaccine. A significant increase in CD4+ and CD8+ lymphocyte proliferation was induced in vitro by each vaccine peptide in mice immunized with the lowest dose of S3Pvac papaya (0.56 ng of the three peptides in 0.1 µg of papaya callus total protein per mouse). In pigs, the obliged intermediate host for Taenia solium, S3Pvac papaya was also immunogenic when orally administered in a two-log dose range. Vaccinated pigs significantly increased anti-vaccine antibodies and mononuclear cell proliferation. Overall, the oral immunogenicity of this stable S3Pvac-papaya vaccine in mice and pigs, not requiring additional adjuvants, supports the interest in papaya callus as a useful platform for plant-based vaccines.
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Affiliation(s)
- Gladis Fragoso
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. Universidad 3000, CP 04510, Mexico City, Mexico
| | - Marisela Hernández
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. Universidad 3000, CP 04510, Mexico City, Mexico
| | - Jacquelynne Cervantes-Torres
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. Universidad 3000, CP 04510, Mexico City, Mexico
| | - Rubén Ramírez-Aquino
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Calle 13 Sur 2702, CP 72420, Puebla, Mexico
| | - Héctor Chapula
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Av. Universidad 3000, CP 04510, Mexico City, Mexico
| | - Nelly Villalobos
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Av. Universidad 3000, CP 04510, Mexico City, Mexico
| | - René Segura-Velázquez
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. Universidad 3000, CP 04510, Mexico City, Mexico
| | - Alfredo Figueroa
- Unidad Académica de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Av. Lázaro Cárdenas s/n, CP 39087, Chilpancingo, GRO, Mexico
| | - Iván Flores
- Facultad de Ciencias Agropecuarias, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, CP 62209, Cuernavaca, MOR, Mexico
| | - Herminio Jiménez
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Calle 13 Sur 2702, CP 72420, Puebla, Mexico
| | - Laura Adalid
- Instituto Nacional de Neurología y Neurocirugía, SSA, Colonia la Fama, Delegación Tlalpan, Mexico, DF, Mexico
| | - Gabriela Rosas
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, CP 62209, Cuernavaca, MOR, Mexico
| | - Luis Galvez
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Calle 13 Sur 2702, CP 72420, Puebla, Mexico
| | - Elias Pezzat
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Calle 13 Sur 2702, CP 72420, Puebla, Mexico
| | - Elizabeth Monreal-Escalante
- Laboratorio de Biofarmacéuticos Recombinantes, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava 6, 78210, San Luis Potosí, Mexico
| | - Sergio Rosales-Mendoza
- Laboratorio de Biofarmacéuticos Recombinantes, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava 6, 78210, San Luis Potosí, Mexico
| | - Luis G Vazquez
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Calle 13 Sur 2702, CP 72420, Puebla, Mexico
| | - Edda Sciutto
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. Universidad 3000, CP 04510, Mexico City, Mexico.
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Linares R, Rosas G, Vieyra E, Ramirez DA, Guerrero YA, Moran C, Dominguez R, Ledesma LM. In rats with the polycystic ovary syndrome, the monoaminergic activity in the celiac superior mesenteric ganglion depends on the vagal innervation. Australas Med J 2017. [DOI: 10.21767/amj.2017.2878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Monreal-Escalante E, Govea-Alonso DO, Hernández M, Cervantes J, Salazar-González JA, Romero-Maldonado A, Rosas G, Garate T, Fragoso G, Sciutto E, Rosales-Mendoza S. Towards the development of an oral vaccine against porcine cysticercosis: expression of the protective HP6/TSOL18 antigen in transgenic carrots cells. Planta 2016; 243:675-685. [PMID: 26613600 DOI: 10.1007/s00425-015-2431-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 11/07/2015] [Indexed: 06/05/2023]
Abstract
The Taenia solium HP6/TSOL18 antigen was produced in carrot cells, yielding an immunogenic protein that induced significant protection in an experimental murine model against T. crassiceps cysticercosis when orally administered. This result supports the potential of HP6/TSOL18-carrot as a low-cost anti-cysticercosis vaccine candidate. Cysticercosis is a zoonosis caused by Taenia solium that can be prevented by interrupting the parasite life cycle through pig vaccination. Several injectable vaccine candidates have been reported, but the logistic difficulties and costs for its application limited its use in nationwide control programs. Oral plant-based vaccines can deal with this limitation, because of their easy administration and low cost. A stable expression of the HP6/TSOL18 anti-T. solium cysticercosis protective antigen in carrot calli transformed with an optimized transgene is herein reported. An antigen accumulation up to 14 µg g(-1) of dry-weight biomass was achieved in the generated carrot lines. Mouse immunization with one of the transformed calli induced both specific IgG and IgA anti-HP6/TSOL18 antibodies. A statistically significant reduction in the expected number of T. crassiceps cysticerci was observed in mice orally immunized with carrot-made HP6/TSOL18, in a similar extent to that obtained by subcutaneous immunization with recombinant HP6/TSOL18 protein. In this study, a new oral plant-made version of the HP6/TSOL18 anti-cysticercosis vaccine is reported. The vaccine candidate should be further tested against porcine cysticercosis.
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Affiliation(s)
- Elizabeth Monreal-Escalante
- Laboratorio de Biofarmacéuticos Recombinantes, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava 6, 78210, San Luis Potosí, Mexico
| | - Dania O Govea-Alonso
- Laboratorio de Biofarmacéuticos Recombinantes, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava 6, 78210, San Luis Potosí, Mexico
| | - Marisela Hernández
- Dpto. Inmunología. Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Circuito Escolar, Ciudad Universitaria, 04510, Mexico, D.F., Mexico
| | - Jacquelynne Cervantes
- Dpto. Inmunología. Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Circuito Escolar, Ciudad Universitaria, 04510, Mexico, D.F., Mexico
| | - Jorge A Salazar-González
- Laboratorio de Biofarmacéuticos Recombinantes, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava 6, 78210, San Luis Potosí, Mexico
| | - Andrea Romero-Maldonado
- Laboratorio de Biofarmacéuticos Recombinantes, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava 6, 78210, San Luis Potosí, Mexico
| | - Gabriela Rosas
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
| | - Teresa Garate
- Dpto. de Parasitología, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, 28220, Madrid, Spain
| | - Gladis Fragoso
- Dpto. Inmunología. Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Circuito Escolar, Ciudad Universitaria, 04510, Mexico, D.F., Mexico
| | - Edda Sciutto
- Dpto. Inmunología. Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Circuito Escolar, Ciudad Universitaria, 04510, Mexico, D.F., Mexico.
| | - Sergio Rosales-Mendoza
- Laboratorio de Biofarmacéuticos Recombinantes, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava 6, 78210, San Luis Potosí, Mexico.
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Fleury A, Trejo A, Cisneros H, García-Navarrete R, Villalobos N, Hernández M, Villeda Hernández J, Hernández B, Rosas G, Bobes RJ, S. de Aluja A, Sciutto E, Fragoso G. Taenia solium: Development of an Experimental Model of Porcine Neurocysticercosis. PLoS Negl Trop Dis 2015; 9:e0003980. [PMID: 26252878 PMCID: PMC4529300 DOI: 10.1371/journal.pntd.0003980] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 07/14/2015] [Indexed: 01/05/2023] Open
Abstract
Human neurocysticercosis (NC) is caused by the establishment of Taenia solium larvae in the central nervous system. NC is a severe disease still affecting the population in developing countries of Latin America, Asia, and Africa. While great improvements have been made on NC diagnosis, treatment, and prevention, the management of patients affected by extraparenchymal parasites remains a challenge. The development of a T. solium NC experimental model in pigs that will allow the evaluation of new therapeutic alternatives is herein presented. Activated oncospheres (either 500 or 1000) were surgically implanted in the cerebral subarachnoid space of piglets. The clinical status and the level of serum antibodies in the animals were evaluated for a 4-month period after implantation. The animals were sacrificed, cysticerci were counted during necropsy, and both the macroscopic and microscopic characteristics of cysts were described. Based on the number of established cysticerci, infection efficiency ranged from 3.6% (1000 oncospheres) to 5.4% (500 oncospheres). Most parasites were caseous or calcified (38/63, 60.3%) and were surrounded by an exacerbated inflammatory response with lymphocyte infiltration and increased inflammatory markers. The infection elicited specific antibodies but no neurological signs. This novel experimental model of NC provides a useful tool to evaluate new cysticidal and anti-inflammatory approaches and it should improve the management of severe NC patients, refractory to the current treatments. Neurocysticercosis (NC) is caused by the implantation of the larval stage of Taenia solium in the human central nervous system. Although NC diagnosis, treatment, and prevention have clearly improved in the last 40 years, the disease still causes significant morbidity and mortality in endemic regions of Latin America, Asia, and Africa. In industrialized countries, the number of diagnosed cases has increased in recent years due to immigration. In this paper, we introduce a new experimental model of T. solium neurocysticercosis in pigs. Activated oncospheres were surgically implanted in the subarachnoid space of the cerebral convexity in piglets. Then, the animals were observed during 4 months. An increase in anti-cysticercal antibodies was detected, along with an inflammatory reaction surrounding the established parasites. This experimental model of T. solium NC will improve our knowledge on the pathogenesis of the disease; additionally, it will let us evaluate new promising treatments for inflammation and improve the effectiveness of cysticidal drugs.
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Affiliation(s)
- Agnès Fleury
- Unidad Periférica del Instituto de Investigaciones Biomédicas en el Instituto Nacional de Neurología y Neurocirugía, Universidad Nacional Autónoma de México, México D.F., México
- Instituto Nacional de Neurología y Neurocirugía, Secretaría de Salud, México D.F., México
- * E-mail:
| | - Armando Trejo
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, México D.F., México
| | - Humberto Cisneros
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, México D.F., México
| | - Roberto García-Navarrete
- Instituto Nacional de Pediatría, Secretaría de Salud, México D.F., México
- Hospital General Naval de Alta Especialidad, Secretaría de Marina (SEMAR), México D.F., México
| | - Nelly Villalobos
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, México D.F., México
| | - Marisela Hernández
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México D.F., México
| | | | - Beatriz Hernández
- Facultad de Medicina, Universidad Nacional Autónoma de México, México D.F., México
| | - Gabriela Rosas
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Morelos, México
| | - Raul J. Bobes
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México D.F., México
| | - Aline S. de Aluja
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, México D.F., México
| | - Edda Sciutto
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México D.F., México
| | - Gladis Fragoso
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México D.F., México
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Rosas G, Ramírez MI, Linares R, Trujillo A, Domínguez R, Morales-Ledesma L. Asymmetric steroidogenic response by the ovaries to the vasoactive intestinal peptide. Endocrine 2015; 48:968-77. [PMID: 25331816 DOI: 10.1007/s12020-014-0449-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 10/07/2014] [Indexed: 12/01/2022]
Abstract
In vitro the vasoactive intestinal peptide (VIP) stimulates progesterone, androgens, and estradiol secretion, and the effects are time-dependent. The present study analyzed the acute (1 h) and sub-acute (24 h) effects of unilateral injection of VIP into the ovarian bursa on each day of the estrous cycle on progesterone, testosterone, and estradiol serum levels. Cyclic 60-day-old virgin female rats on diestrus-1, diestrus-2, proestrus, or estrus were injected with saline or VIP 10(-6) M into the left or right ovarian bursa. One hour after saline injection on each day of estrus cycle, progesterone levels were higher than in control animals. The acute effects of saline solution on testosterone and estradiol levels were asymmetric and varied during the estrous cycle. In comparison with saline groups, the effects of VIPergic stimulation on progesterone, testosterone, and estradiol serum levels depend on the time elapsed between treatment and autopsy and vary during the estrous cycle. An acute asymmetric response from the ovaries to the VIP was observed at diestrus-1, diestrus-2, and proestrus on progesterone and estradiol levels. The asymmetries on testosterone levels were observed at diestrus-1, diestrus-2, and estrus days. The present results suggest that in the cyclic rat, each ovary has different sensitivities to VIPergic stimulation which depends on the endocrine status of the animal.
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Affiliation(s)
- Gabriela Rosas
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP 15000, Mexico, D.F., Mexico
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Hernández M, Rosas G, Cervantes J, Fragoso G, Rosales-Mendoza S, Sciutto E. Transgenic plants: a 5-year update on oral antipathogen vaccine development. Expert Rev Vaccines 2014; 13:1523-36. [PMID: 25158836 DOI: 10.1586/14760584.2014.953064] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The progressive interest in transgenic plants as advantageous platforms for the production and oral delivery of vaccines has led to extensive research and improvements in this technology over recent years. In this paper, the authors examine the most significant advances in this area, including novel approaches for higher yields and better containment, and the continued evaluation of new vaccine prototypes against several infectious diseases. The use of plants to deliver vaccine candidates against viruses, bacteria, and eukaryotic parasites within the last 5 years is discussed, focusing on innovative expression strategies and the immunogenic potential of new vaccines. A brief section on the state of the art in mucosal immunity is also included.
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Affiliation(s)
- Marisela Hernández
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, 04510 México, DF, México
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Diaz-Masmela Y, Fragoso G, Ambrosio JR, Mendoza-Hernández G, Rosas G, Estrada K, Carrero JC, Sciutto E, Laclette JP, Bobes RJ. Immunodiagnosis of porcine cysticercosis: identification of candidate antigens through immunoproteomics. Vet J 2013; 198:656-60. [PMID: 24161749 DOI: 10.1016/j.tvjl.2013.09.056] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 09/19/2013] [Accepted: 09/20/2013] [Indexed: 01/12/2023]
Abstract
Cysticercosis, caused by the larval stage of Taenia solium, is a zoonotic disease affecting pigs and humans that is endemic to developing countries in Latin America, Africa and South East Asia. The prevalence of infection in pigs, the intermediate host for T. solium, has been used as an indicator for monitoring disease transmission in endemic areas. However, accurate and specific diagnostic tools for porcine cysticercosis remain to be established. Using proteomic approaches and the T. solium genome sequence, seven antigens were identified as specific for porcine cysticercosis, namely, tropomyosin 2, alpha-1 tubulin, beta-tubulin 2, annexin B1, small heat-shock protein, 14-3-3 protein, and cAMP-dependent protein kinase. None of these proteins were cross-reactive when tested with sera from pigs infected with Ascaris spp., Cysticercus tenuicollis and hydatid cysts of Echinococcus spp. or with serum from a Taenia saginata-infected cow. Comparison with orthologues, indicated that the amino acid sequences of annexin B1 and cAMP-dependent protein kinase possessed highly specific regions, which might make them suitable candidates for development of a specific diagnostic assay for porcine cysticercosis.
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Affiliation(s)
- Yuliet Diaz-Masmela
- Immunology Department, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, DF 04510, Mexico
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Sciutto E, Fragoso G, Hernández M, Rosas G, Martínez JJ, Fleury A, Cervantes J, Aluja A, Larralde C. Development of the S3Pvac vaccine against porcine Taenia solium cysticercosis: a historical review. J Parasitol 2013; 99:686-92. [PMID: 23445359 DOI: 10.1645/ge-3102.1] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Herein we present a review of our research dealing with vaccination against experimental and naturally acquired porcine Taenia solium cysticercosis using Taenia crassiceps-derived antigens. Results strongly support that the different versions of S3Pvac vaccine are indeed effective against porcine T. solium cysticercosis. Immunological results related to vaccination prove that protection is at least partially mediated by specific immunity. The data also support the validity of T. crassiceps murine cysticercosis as an effective tool to identify vaccine candidates against some metacestode infections.
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Affiliation(s)
- Edda Sciutto
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México DF, México.
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Sciutto E, Fragoso G, Hernández M, Rosas G, Martínez JJ, Fleury A, Cervantes J, Aluja A, Larralde C. Development of the S3Pvac vaccine against murine Taenia crassiceps cysticercosis: a historical review. J Parasitol 2013; 99:693-702. [PMID: 23409920 DOI: 10.1645/ge-3101.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Our work of the last 25 yr was concerned with the development of a vaccine aimed to prevent porcine Taenia solium cysticercosis and was based on cross-reacting Taenia crassiceps antigens that had proved protective against experimental intraperitoneal murine T. crassiceps cysticercosis (EIMTcC). In recent times the efficacy of the vaccine has been considered in need of confirmation, and the use of EIMTcC has been questioned as a valid tool in screening for vaccine candidates among the many antigens possibly involved. A review of our work divided in 2 parts is presented at this point, the first dealing with EIMTcC and the second with porcine T. solium cysticercosis (presented in this issue). Herein, we revise our results using EIMTcC as a measure of the protective capacity of T. crassiceps complex antigen mixtures, of purified native antigens, and of S3Pvac anti-cysticercosis vaccine composed by 3 protective peptides: GK-1, KETc1, and KETc12 either synthetic or recombinantly expressed and collectively or separately, by diverse delivery systems when administered at different doses and by different routes. Statistical analyses of the data lead confidently to the strong inference that S3Pvac is indeed an effective vaccine against EIMTcC via specific and non-specific mechanisms of protection.
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Affiliation(s)
- Edda Sciutto
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México DF, México.
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Betancourt MA, de Aluja AS, Sciutto E, Hernández M, Bobes RJ, Rosas G, Hernández B, Fragoso G, Hallal-Calleros C, Aguilar L, Flores-Peréz I. Effective protection induced by three different versions of the porcine S3Pvac anticysticercosis vaccine against rabbit experimental Taenia pisiformis cysticercosis. Vaccine 2012; 30:2760-7. [DOI: 10.1016/j.vaccine.2012.02.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Revised: 01/13/2012] [Accepted: 02/06/2012] [Indexed: 10/28/2022]
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Morales J, de Aluja AS, Martínez JJ, Hernández M, Rosas G, Villalobos N, Hernández B, Blancas A, Manoutcharian K, Gevorkian G, Cervantes J, Díaz A, Fleury A, Fragoso G, Larralde C, Sciutto E. Recombinant S3Pvac-phage anticysticercosis vaccine: Simultaneous protection against cysticercosis and hydatid disease in rural pigs. Vet Parasitol 2011; 176:53-8. [DOI: 10.1016/j.vetpar.2010.10.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2010] [Revised: 10/14/2010] [Accepted: 10/18/2010] [Indexed: 10/18/2022]
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Sciutto E, Rosas G, Cruz-Revilla C, Toledo A, Cervantes J, Hernández M, Hernándezt B, Goldbaum FA, de Aluja AS, Fragoso G, Larralde C. Renewed hope for a vaccine against the intestinal adult Taenia solium. J Parasitol 2010; 93:824-31. [PMID: 17918361 DOI: 10.1645/ge-1018r1.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Review of experimental and observational evidence about various cestode infections of mammalian hosts revives hope for the development of an effective vaccine against adult intestinal tapeworms, the central protagonists in their transmission dynamics. As for Taenia solium, there are abundant immunological data regarding cysticercosis in humans and pigs, but information about human taeniasis is scarce. A single publication reporting protection against T. solium taeniasis by experimental primo infection and by vaccination of an experimental foster host, the immunocompetent female hamster, kindles the hope of a vaccine against the tapeworm to be used in humans, its only natural definitive host.
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Affiliation(s)
- Edda Sciutto
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, A.P. 70228, DF México.
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Morales-Ledesma L, Linares R, Rosas G, Morán C, Chavira R, Cárdenas M, Domínguez R. Unilateral sectioning of the superior ovarian nerve of rats with polycystic ovarian syndrome restores ovulation in the innervated ovary. Reprod Biol Endocrinol 2010; 8:99. [PMID: 20723258 PMCID: PMC2936316 DOI: 10.1186/1477-7827-8-99] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2010] [Accepted: 08/19/2010] [Indexed: 11/10/2022] Open
Abstract
The present study tested the hypothesis that if polycystic ovary syndrome (PCOS) results from activating the noradrenergic outflow to the ovary, unilaterally sectioning the superior ovarian nerve (SON) will result in ovulation by the denervated ovary, and the restoration of progesterone (P4), testosterone (T) and estradiol (E2) normal serum level. A single 2 mg dose of estradiol valerate (EV) to adult rats results in the development of a syndrome similar to the human PCOS. Ten-day old rats were injected with EV or vehicle solution (Vh) and were submitted to sham surgery, unilateral or bilateral sectioning of the SON at 24-days of age. The animals were sacrificed at 90 to 92 days of age, when they presented vaginal estrus preceded by a pro-estrus smear. In EV-treated animals, unilateral sectioning of the SON restored ovulation by the innervated ovary and unilateral or bilateral sectioning of the SON normalized testosterone and estradiol levels. These results suggest that aside from an increase in ovarian noradrenergic tone in the ovaries, in the pathogenesis of the PCOS participate other neural influences arriving to the ovaries via the SON, regulating spontaneous ovulation. Changes in P4, T and E2 serum levels induced by EV treatment seem to be controlled by neural signals arising from the abdominal wall and other signals arriving to the ovaries through the SON, and presents asymmetry.
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Affiliation(s)
- Leticia Morales-Ledesma
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory FES Zaragoza, UNAM, AP 9-020, CP 15000, México, DF, México
| | - Rosa Linares
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory FES Zaragoza, UNAM, AP 9-020, CP 15000, México, DF, México
| | - Gabriela Rosas
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory FES Zaragoza, UNAM, AP 9-020, CP 15000, México, DF, México
| | - Carolina Morán
- Departament of Biology and Toxicology of Reproduction, Science Institute BUAP, México
| | - Roberto Chavira
- Instituto Nacional de Ciencias Médicas y de la Nutrición "Salvador Zubirán", México
| | - Mario Cárdenas
- Instituto Nacional de Ciencias Médicas y de la Nutrición "Salvador Zubirán", México
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory FES Zaragoza, UNAM, AP 9-020, CP 15000, México, DF, México
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Rassy D, Bobes RJ, Rosas G, Anaya VH, Brehm K, Hernández B, Cervantes J, Pedraza S, Morales J, Villalobos N, de Aluja AS, Laclette JP, Nunes CM, Biondi GF, Fragoso G, Hernández M, Sciutto E. Characterization of S3Pvac anti-cysticercosis vaccine components: implications for the development of an anti-cestodiasis vaccine. PLoS One 2010; 5:e11287. [PMID: 20585656 PMCID: PMC2890579 DOI: 10.1371/journal.pone.0011287] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2009] [Accepted: 06/02/2010] [Indexed: 11/19/2022] Open
Abstract
Background Cysticercosis and hydatidosis seriously affect human health and are responsible for considerable economic loss in animal husbandry in non-developed and developed countries. S3Pvac and EG95 are the only field trial-tested vaccine candidates against cysticercosis and hydatidosis, respectively. S3Pvac is composed of three peptides (KETc1, GK1 and KETc12), originally identified in a Taenia crassiceps cDNA library. S3Pvac synthetically and recombinantly expressed is effective against experimentally and naturally acquired cysticercosis. Methodology/Principal Findings In this study, the homologous sequences of two of the S3Pvac peptides, GK1 and KETc1, were identified and further characterized in Taenia crassiceps WFU, Taenia solium, Taenia saginata, Echinococcus granulosus and Echinococcus multilocularis. Comparisons of the nucleotide and amino acid sequences coding for KETc1 and GK1 revealed significant homologies in these species. The predicted secondary structure of GK1 is almost identical between the species, while some differences were observed in the C terminal region of KETc1 according to 3D modeling. A KETc1 variant with a deletion of three C-terminal amino acids protected to the same extent against experimental murine cysticercosis as the entire peptide. On the contrary, immunization with the truncated GK1 failed to induce protection. Immunolocalization studies revealed the non stage-specificity of the two S3Pvac epitopes and their persistence in the larval tegument of all species and in Taenia adult tapeworms. Conclusions/Significance These results indicate that GK1 and KETc1 may be considered candidates to be included in the formulation of a multivalent and multistage vaccine against these cestodiases because of their enhancing effects on other available vaccine candidates.
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Affiliation(s)
- Dunia Rassy
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Distrito Federal, México
| | - Raúl J. Bobes
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Distrito Federal, México
| | - Gabriela Rosas
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos. Cuernavaca, Morelos, México
| | - Victor H. Anaya
- Institute for Theoretical Biology, Humboldt Universität zu Berlin, Berlin, Germany
| | - Klaus Brehm
- Institut für Hygiene und Mikrobiologie, Julius-Maximillians-Universität Würzburg, Würzburg, Germany
| | - Beatriz Hernández
- Facultad de Medicina, Universidad Nacional Autónoma de México, Distrito Federal, México
| | - Jacquelynne Cervantes
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Distrito Federal, México
| | - Saúl Pedraza
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Distrito Federal, México
| | - Julio Morales
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Distrito Federal, México
| | - Nelly Villalobos
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Distrito Federal, México
| | - Aline S. de Aluja
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Distrito Federal, México
| | - Juan P. Laclette
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Distrito Federal, México
| | - Caris M. Nunes
- Departamento de Apoio, Produção e Saúde Animal, Campus de Araçatuba, Universidad Estadual Paulista “Júlio de Mesquita Filho, Araçatuba, São Paolo, Brazil
| | - Germano F. Biondi
- Departamento de Higiene Veterinária e Saúde Pública, Faculdade de Medicina Veterinária e Zootecnia de Botucatu, Campus Botucatu, Universidad Estadual Paulista “Júlio de Mesquita Filho, Botucatu, São Paolo, Brazil
| | - Gladis Fragoso
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Distrito Federal, México
| | - Marisela Hernández
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Distrito Federal, México
| | - Edda Sciutto
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Distrito Federal, México
- * E-mail:
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Molinu MG, Venditti T, Dore A, Agabbio M, Rosas G, D'Hallewin G. Postharvest behaviour of five Sardinian prune varieties as affected by immersion in heated sodium bicarbonate solution. Commun Agric Appl Biol Sci 2010; 75:753-759. [PMID: 21534487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Storage behaviour of 'Core', 'Core Columbu', 'Fradis' and 'Meloni' white prunes, and a black one ('Sighera') of Sardinian germplasm were evaluated following immersion for 0 (control), 15, 30, 45 or 60 sec in water at 20, 50, 55 or 60 degrees C with or without 2% (w/v) NaHCO3 (SBC). As international varieties, fruit from one white plum ('Shiro') and one black prune ('Stanly') were subjected to the same treatments. Fruit was harvested at commercial maturity, treated and then stored for 1 month at 5 degrees C and 90% RH followed by a simulated marketing period at 20 degrees C and 80% RH for 6 days. Fruit appearance, external damage, firmness and decay percentage were monitored after storage and SMP. Treatments did not induce rind damage (browning or discoloration) to any variety. SBC at 20, 45, 50 or 55 degrees C for 15 or 30 sec was not effective in controlling decay and compared to controls no improvement was observed. Immersion for 45 or 60 sec with SBC at all temperatures improved decay control with respect to controls and best results were obtained at 50 or 55 degrees C. Immersions at 60 degrees C improved decay control, but differences were not significant compared to the control attained with solutions of SBC heated at 55 degrees C. The overall appearance of 'Core', 'Core Columbu', 'Fradis' and 'Shiro' decreased significantly after the SMP period, especially when treated at 55 or 60 degrees C for 60 sec. Fruit shrivel was the main cause of the low rating. SBC did not affect shrivel indicating that heat treatment may be the probable cause. In general, local varieties were less affected by decay than other varieties and they performed well during storage.
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Affiliation(s)
- M G Molinu
- CNR - ISPA, Traversa La Crucca, 3 Loc. Baldinca, 07040 Sassari, Italy
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Meneses G, Berzunza M, Becker I, Bobes RJ, Rosas G, Sciutto E, Fragoso G. Taenia crassiceps cysticercosis: variations in its parasite growth permissiveness that encounter with local immune features in BALB/c substrains. Exp Parasitol 2009; 123:362-8. [PMID: 19735657 DOI: 10.1016/j.exppara.2009.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2009] [Revised: 08/07/2009] [Accepted: 09/02/2009] [Indexed: 10/20/2022]
Abstract
This study describes the first days of Taenia crassiceps infection in BALB/c substrains, BALB/cAnN and BALB/cJ, using two stocks of the same strains which were kept in different animal facilities, conventional and pathogen-free conditions, respectively. This study shows that parasite growth restriction shown by conventional BALB/cJ mice changed to parasite growth permissiveness when pathogen-free BALB/cJ mice were used. In addition, the higher number of macrophages, NK cells and intraperitoneal level of IFN-gamma found in the conventional restrictive BALB/cJ substrain vanished when the permissiveness to the parasite growth increased. No differences were found in DNA sequences of parasites collected before and after the change in the permissiveness to parasite growth which favors the possibility that the observed modifications could be due to changes in the murine strains and/or their maintenance conditions.
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Affiliation(s)
- Gabriela Meneses
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Apartado Postal 70228, Mexico City C.P. 04510, Mexico
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44
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Abstract
Taenia solium cysticercosis is a major parasitic disease that seriously and frequently affects human health and economy in undeveloped countries. Since pigs are an indispensable intermediate host, it is conceivable to curb transmission by reducing pig cysticercosis through their effective vaccination. This article reviews current knowledge on the development vaccines against porcine cysticercosis. It highlights the development of several versions of S3Pvac aimed to increase effectiveness, reduce costs and increase feasibility by novel delivery systems and alternative routes of administration.
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Affiliation(s)
- Edda Sciutto
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México DF.
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45
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Dominguez R, Linares R, Rosas G, Cruz-Morales SE, Morales L. Experimental Polycystic Ovary Syndrome (PCOS) Induced by Estradiol Valerate (EV) Is Not Explained Only by the Increase in the Norepinephrine Ovarian Activity. Biol Reprod 2008. [DOI: 10.1093/biolreprod/78.s1.178c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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46
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Clayton A, Kornstein S, Lamm L, Rosas G, Tourian K. Pooled analysis of the safety and tolerability of desvenlafaxine Succinate compared with placebo in the treatment of major depressive disorder. Eur Psychiatry 2008. [DOI: 10.1016/j.eurpsy.2008.01.321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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47
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Montero E, Gonzalez LM, Bonay P, Rosas G, Hernandez B, Sciutto E, Parkhouse RME, Harrison LJS, Morales MA, Garate T. Taenia solium: Identification and preliminary characterization of a lipid binding protein with homology to the SEC14 catalytic domain. Exp Parasitol 2007; 116:191-200. [PMID: 17324397 DOI: 10.1016/j.exppara.2006.12.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2006] [Revised: 12/15/2006] [Accepted: 12/20/2006] [Indexed: 02/02/2023]
Abstract
The objective of this work is to identify proteins of the human and porcine parasite, Taenia solium, which may be exploited for control of the parasite. Through screening a cDNA library of T. solium metacestodes, we have identified a novel Sec-14-like Taenia lipid-binding protein that may play an important role in membrane trafficking. The Sec14-like sequence is a single copy gene, encoding a putative polypeptide of 320 amino acids and 36.1 kDa (sec14Tsol protein). Secondary amino acid structural analysis suggested that the sec14Tsol protein might contain two distinct structural domains, an amino-terminal alpha-helix rich domain and a mixed alpha-helix/beta-stand carboxy-terminal zone, showing homology with the conserved SEC14 domain found in a great number of proteins that bind lipids, as the regulators of membrane trafficking between Golgi membrane bilayers. Significantly, therefore, in a phosphoinositide-binding assay, sec14Tsol purified recombinant protein specifically interacted with important lipid regulators of membrane trafficking, with a preference for PI(3)P(2), PI(3,4)P(2), PI(4,5)P(2) and phosphatidic acid. Moreover, the sec14Tsol protein was localized in the Golgi apparatus of transfected cells and in the spiral canal region of T. solium metacestode tegument. As sec14Tsol protein may play an important role in membrane trafficking, its demonstrated localisation in the intact parasite tegument suggests its involvement in the function of the tegument and thus perhaps interaction with the host.
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Affiliation(s)
- Estrella Montero
- Instituto de Salud Carlos III, Centro Nacional de Microbiología, Ctra Majadahonda Pozuelo Km 2,2, 28220, Majadahonda Madrid, Spain
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48
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Hernández M, Cabrera-Ponce JL, Fragoso G, López-Casillas F, Guevara-García A, Rosas G, León-Ramírez C, Juárez P, Sánchez-García G, Cervantes J, Acero G, Toledo A, Cruz C, Bojalil R, Herrera-Estrella L, Sciutto E. A new highly effective anticysticercosis vaccine expressed in transgenic papaya. Vaccine 2007; 25:4252-60. [PMID: 17399859 DOI: 10.1016/j.vaccine.2007.02.080] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2006] [Revised: 02/20/2007] [Accepted: 02/23/2007] [Indexed: 10/23/2022]
Abstract
The use of transgenic plants as new antigen-delivery systems for subunit vaccines has been increasingly explored. We herein report progress toward a papaya-based vaccine against cysticercosis. Synthetic peptides (KETc1, KETc12, KETc7) were successfully expressed in 19 different transgenic papaya clones and found to be immunogenic. Complete protection against cysticercosis was induced with the soluble extract of the clones that expressed the higher levels of transcripts in up to 90% of the immunized mice. This study represents a key step towards the development of a more effective, sustainable and affordable oral subunit vaccine against human and pig cysticercosis.
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MESH Headings
- Animals
- Carica/genetics
- Cysticercosis/immunology
- Cysticercosis/prevention & control
- Cysticercus/growth & development
- Cysticercus/immunology
- Female
- Life Cycle Stages
- Mice
- Mice, Inbred BALB C
- Models, Animal
- Peritoneal Cavity/parasitology
- Plants, Genetically Modified/genetics
- Plants, Genetically Modified/metabolism
- Vaccines, Subunit/genetics
- Vaccines, Subunit/immunology
- Vaccines, Subunit/isolation & purification
- Vaccines, Synthetic/genetics
- Vaccines, Synthetic/immunology
- Vaccines, Synthetic/isolation & purification
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Affiliation(s)
- Marisela Hernández
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México, D.F. 04510, México
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49
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Sciutto E, Rosas G, Hernández M, Morales J, Cruz-Revilla C, Toledo A, Manoutcharian K, Gevorkian G, Blancas A, Acero G, Hernández B, Cervantes J, Bobes RJ, Goldbaum FA, Huerta M, Diaz-Orea A, Fleury A, de Aluja AS, Cabrera-Ponce JL, Herrera-Estrella L, Fragoso G, Larralde C. Improvement of the synthetic tri-peptide vaccine (S3Pvac) against porcine Taenia solium cysticercosis in search of a more effective, inexpensive and manageable vaccine. Vaccine 2006; 25:1368-78. [PMID: 17188784 DOI: 10.1016/j.vaccine.2006.10.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2006] [Revised: 10/03/2006] [Accepted: 10/04/2006] [Indexed: 11/29/2022]
Abstract
Vaccination of pigs may curtail Taenia solium transmission by reducing the number of cysticerci, the precursors of adult intestinal tapeworms in humans. Several antigen preparations induce protection against porcine cysticercosis in experimental settings but only one subunit vaccine (S3Pvac) has been tested and proved effective in the field against naturally acquired disease. Besides improving of the vaccine's effectiveness, significant reductions in production costs and in the logistics of its administration are necessary for the feasibility of nationwide control programs. This review highlights the development of several versions of S3Pvac aimed to increase effectiveness, reduce costs and increase feasibility by novel delivery systems and alternative routes of administration.
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Affiliation(s)
- Edda Sciutto
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México, D.F. 04510, Mexico.
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50
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Cruz-Revilla C, Sonabend AM, Rosas G, Toledo A, Meneses G, Lopez-Casillas F, Hernández B, Fragoso G, Sciutto E. Intrahepatic DNA vaccination: unexpected increased resistance against murine cysticercosis induced by non-specific enhanced immunity. J Parasitol 2006; 92:655-7. [PMID: 16884018 DOI: 10.1645/ge-665r1.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Experimental murine cysticercosis caused by Taenia crassiceps has proved to be a useful model with which to test the efficacy of new vaccine candidates and delivery systems against pig cysticercosis. A high level of protection against murine cysticercosis was previously observed by intramuscular or intradermal DNA immunization with the use of the sequence of the recombinant KETc7 antigen cloned in pcDNA3 (pTc-sp7). To determine the effect of KETc7 differential expression in DNA vaccination, KETc7 was cloned in pGEM 11Zf(+) under the control of the tissue-specific regulatory promoter phosphoenolpyruvate carboxykinase (pPc-sp7). A high level of protection was induced by intrahepatic immunization with pPc-sp7, pTc-sp7 and the empty vector in the absence of any specific immunity. The empty vector pGEM 11Zf(+), the plasmid with the highest content of CpG sequences, provided to the most efficient protection. This protection was related to an increased number of splenocytes, enhanced nonspecific splenocyte proliferation, and intensified intrahepatic INF-gamma production. Overall, intrahepatic plasmid CpG-DNA immunization provokes an exacerbated nonspecific immune response that can effectively control Taenia crassiceps cysticercosis.
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Affiliation(s)
- C Cruz-Revilla
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria
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