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Gonzalez-Cano SI, Flores G, Guevara J, Morales-Medina JC, Treviño S, Diaz A. Polyoxidovanadates a new therapeutic alternative for neurodegenerative and aging diseases. Neural Regen Res 2024; 19:571-577. [PMID: 37721286 PMCID: PMC10581577 DOI: 10.4103/1673-5374.380877] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 03/27/2023] [Revised: 05/18/2023] [Accepted: 06/22/2023] [Indexed: 09/19/2023] Open
Abstract
Aging is a natural phenomenon characterized by a progressive decline in physiological integrity, leading to a deterioration of cognitive function and increasing the risk of suffering from chronic-degenerative diseases, including cardiovascular diseases, osteoporosis, cancer, diabetes, and neurodegeneration. Aging is considered the major risk factor for Parkinson's and Alzheimer's disease develops. Likewise, diabetes and insulin resistance constitute additional risk factors for developing neurodegenerative disorders. Currently, no treatment can effectively reverse these neurodegenerative pathologies. However, some antidiabetic drugs have opened the possibility of being used against neurodegenerative processes. In the previous framework, Vanadium species have demonstrated a notable antidiabetic effect. Our research group evaluated polyoxidovanadates such as decavanadate and metforminium-decavanadate with preventive and corrective activity on neurodegeneration in brain-specific areas from rats with metabolic syndrome. The results suggest that these polyoxidovanadates induce neuronal and cognitive restoration mechanisms. This review aims to describe the therapeutic potential of polyoxidovanadates as insulin-enhancer agents in the brain, constituting a therapeutic alternative for aging and neurodegenerative diseases.
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Affiliation(s)
| | - Gonzalo Flores
- Institute of Physiology, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Jorge Guevara
- Department of Biochemistry, Faculty of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
| | | | - Samuel Treviño
- Faculty of Chemical Sciences, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Alfonso Diaz
- Faculty of Chemical Sciences, Benemerita Autonomous University of Puebla, Puebla, Mexico
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2
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Szwarcman D, Guevara J, Macedo MMG, Zadrozny B, Watson C, Rosa L, Oliveira DAB. Quantizing reconstruction losses for improving weather data synthesis. Sci Rep 2024; 14:3396. [PMID: 38336873 DOI: 10.1038/s41598-024-52773-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
The stochastic synthesis of extreme, rare climate scenarios is vital for risk and resilience models aware of climate change, directly impacting society in different sectors. However, creating high-quality variations of under-represented samples remains a challenge for several generative models. This paper investigates quantizing reconstruction losses for helping variational autoencoders (VAE) better synthesize extreme weather fields from conventional historical training sets. Building on the classical VAE formulation using reconstruction and latent space regularization losses, we propose various histogram-based penalties to the reconstruction loss that explicitly reinforces the model to synthesize under-represented values better. We evaluate our work using precipitation weather fields, where models usually strive to synthesize well extreme precipitation samples. We demonstrate that bringing histogram awareness to the reconstruction loss improves standard VAE performance substantially, especially for extreme weather events.
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Affiliation(s)
| | | | | | | | | | - Laura Rosa
- Laboratory of Geo-information Science and Remote Sensing, Wageningen University and Research, Wageningen, The Netherlands
| | - Dario A B Oliveira
- IBM Research, Rio de Janeiro, Brazil.
- School of Applied Mathematics, Getulio Vargas Foundation, Rio de Janeiro, Brazil.
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3
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Haylock-Loor C, Guevara J. Impact of conflict and pandemic on women's health in Latin America: implementation to improve equity in the provision and access to safe obstetric anesthesia. Int J Obstet Anesth 2023; 55:103651. [PMID: 37117101 DOI: 10.1016/j.ijoa.2023.103651] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 02/25/2023] [Accepted: 03/12/2023] [Indexed: 04/30/2023]
Abstract
Latin America is one of the regions with the most significant inequalities in women's health as a result of factors such as social disparity, lack of work opportunities, unemployment, violence, and corruption. Adding a health crisis like the COVID-19 pandemic to these elements created a perfect storm that perpetuated extreme inequalities. The crisis negatively impacted Latin-American women, and economic recession in our region was one of the main consequences, resulting in women compared with men having higher rates of poverty, poorer access to and experience of healthcare, a wider gender gap, and adverse effects on well-being. This consequently made women more vulnerable. Several initiatives to allow better access and to provide safe anesthesia to pregnant patients have been taken in the region to improve obstetric patient care during the pandemic and beyond. Education has been pivotal and one of the most essential tools in bridging the gap in inequalities between men and women.
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Affiliation(s)
- C Haylock-Loor
- Departamento de Anestesiología, Terapia del Dolor y Cuidados Intensivos, Hospital del Valle, San Pedro Sula, Honduras.
| | - J Guevara
- Departamento de Anestesiología, Clínica Universitaria Colombia, Bogotá, Colombia
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4
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Baraibar I, García A, Salvà F, Ros J, Saoudi N, Comas R, Castillo G, Sanchis M, García-Álvarez A, Hernando J, Capdevila J, Castells MR, Martí M, Landolfi S, Espín E, Navalpotro B, Guevara J, Dopazo C, Nuciforo P, Vivancos A, Tabernero J, Élez E. Impact of the COVID-19 pandemic in the early-onset colorectal cancer. Transl Oncol 2023; 32:101668. [PMID: 37031602 PMCID: PMC10073589 DOI: 10.1016/j.tranon.2023.101668] [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: 02/08/2023] [Revised: 03/20/2023] [Accepted: 04/04/2023] [Indexed: 04/08/2023] Open
Abstract
The COVID19 pandemic has affected the spectrum of cancer care worldwide. Early onset colorectal cancer (EOCRC) is defined as diagnosis below the age of 50. Patients with EOCRC faced multiple challenges during the COVID19 pandemic and in some institutions it jeopardized cancer diagnosis and care delivery. Our study aims to identify the clinicopathological features and outcomes of patients with EOCRC in our Centre during the first wave of the pandemic in comparison with the same period in 2019 and 2021. Patients with EOCRC visited for the first time at Vall d'Hebron University Hospital in Spain from the 1st March to 31st August of 2019, 2020 and 2021 were included in the analysis. 177 patients with EOCRC were visited for the first time between 2019 and 2021, of which 90 patients met the inclusion criteria (2019: 30 patients, 2020: 29 patients, 2021: 31 patients). Neither differences in frequency nor in stage at diagnosis or at first visit during the given periods were observed. Of note, indication of systemic therapy in the adjuvant or metastatic setting was not altered. Days to treatment initiation and enrollment in clinical trials in this subpopulation was not affected due to the COVID-19 outbreak.
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Affiliation(s)
- Iosune Baraibar
- Department of Medical Oncology, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain; Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain.
| | - Ariadna García
- Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain
| | - Francesc Salvà
- Department of Medical Oncology, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain; Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain
| | - Javier Ros
- Department of Medical Oncology, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain; Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain
| | - Nadia Saoudi
- Department of Medical Oncology, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain; Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain
| | - Raquel Comas
- Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain
| | - Gloria Castillo
- Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain
| | - Mireia Sanchis
- Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain
| | - Alejandro García-Álvarez
- Department of Medical Oncology, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain; Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain
| | - Jorge Hernando
- Department of Medical Oncology, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain; Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain
| | - Jaume Capdevila
- Department of Medical Oncology, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain; Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain
| | - Marta R Castells
- Department of Medical Oncology, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain; Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain
| | - Marc Martí
- Department of General Surgery, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain
| | - Stefania Landolfi
- Department of Pathological Anatomy, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain
| | - Eloy Espín
- Department of General Surgery, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain
| | - Begoña Navalpotro
- Department of Radiation Oncology, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain
| | - Jorge Guevara
- Department of Gastroenterology, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain
| | - Cristina Dopazo
- Department of General Surgery, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain
| | - Paolo Nuciforo
- Department of Medical Oncology, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain
| | - Ana Vivancos
- Department of Medical Oncology, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain
| | - Josep Tabernero
- Department of Medical Oncology, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain; Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain
| | - Elena Élez
- Department of Medical Oncology, Vall d'Hebron University Hospital, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain; Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain
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Juarez D, Arteaga I, Cortes H, Vazquez-Roque R, Lopez-Lopez G, Flores G, Treviño S, Guevara J, Diaz A. Chronic resveratrol administration reduces oxidative stress and brain cell loss and improves memory of recognition in old rats. Synapse 2023; 77:e22271. [PMID: 37130656 DOI: 10.1002/syn.22271] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 03/22/2023] [Accepted: 04/04/2023] [Indexed: 05/04/2023]
Abstract
The cognitive functions of people over 60 years of age have been diminished, due to the structural and functional changes that the brain has during aging. The most evident changes are at the behavioral and cognitive level, with decreased learning capacity, recognition memory, and motor incoordination. The use of exogenous antioxidants has been implemented as a potential pharmacological option to delay the onset of brain aging by attenuating oxidative stress and neurodegeneration. Resveratrol (RSVL) is a polyphenol present in various foods, such as red fruits, and drinks, such as red wine. This compound has shown great antioxidant capacity due to its chemical structure. In this study, we evaluated the effect of chronic RSVL treatment on oxidative stress and cell loss in the prefrontal cortex, hippocampus, and cerebellum of 20-month-old rats, as well as its impact on recognition memory and motor behavior. Rats treated with RSVL showed an improvement in locomotor activity and in short- and long-term recognition memory. Likewise, the concentration of reactive oxygen species and lipid peroxidation decreased significantly in the group with RSVL, coupled with an improvement in the activity of the antioxidant system. Finally, with the help of hematoxylin and eosin staining, it was shown that chronic treatment with RSVL prevented cell loss in the brain regions studied. Our results demonstrate the antioxidant and neuroprotective capacity of RSVL when administered chronically. This strengthens the proposal that RSVL could be an important pharmacological option to reduce the incidence of neurodegenerative diseases that affect older adults.
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Affiliation(s)
- Daniel Juarez
- Faculty of Chemical Sciences, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Ivan Arteaga
- Faculty of Chemical Sciences, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Haisha Cortes
- Faculty of Chemical Sciences, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Ruben Vazquez-Roque
- Institute of Physiology, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Gustavo Lopez-Lopez
- Faculty of Chemical Sciences, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Gonzalo Flores
- Institute of Physiology, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Samuel Treviño
- Faculty of Chemical Sciences, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Jorge Guevara
- Department of Biochemistry, Faculty of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
| | - Alfonso Diaz
- Faculty of Chemical Sciences, Benemerita Autonomous University of Puebla, Puebla, Mexico
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Fuentes E, Venegas B, Muñoz-Arenas G, Moran C, Vazquez-Roque RA, Flores G, Treviño S, Diaz A, Guevara J. High-carbohydrate and fat diet consumption causes metabolic deterioration, neuronal damage, and loss of recognition memory in rats. J Chem Neuroanat 2023; 129:102237. [PMID: 36736441 DOI: 10.1016/j.jchemneu.2023.102237] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [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: 08/04/2022] [Revised: 01/24/2023] [Accepted: 01/25/2023] [Indexed: 02/05/2023]
Abstract
The number of people diagnosed with metabolic syndrome (MetS) has increased dramatically to reach alarming proportions worldwide. The origin of MetS derives from bad eating habits and sedentary lifestyle. Most people consume foods high in carbohydrates and saturated fat. In recent years, it has been reported that alterations in insulin at the brain level could have an impact on the appearance of neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, dementia, depression, and other types of disorders that compromise brain function. These alterations have been associated with damage to the structure and function of neurons located in the reptilian and limbic systems, a decrease in dendritic arborization and an exacerbated inflammatory state that impaired learning and memory and increased in the state of stress and anxiety. Although the molecular mechanisms induced by MetS to cause neurodegeneration are not fully understood. The aim of this study is to know the effect of the intake of hypercaloric diets on the structure and function of neurons located in the frontal cortex, hypothalamus and hippocampus and its impact on behavior in rats with metabolic syndrome. In conclusion, the present study illustrated that chronic exposure to hypercaloric diets, with a high content of sugars and saturated fatty acids, induces a proinflammatory state and exacerbates oxidative stress in brain regions such as the hypothalamus, hippocampus, and frontal cortex, leading to dysfunction. metabolism, neuronal damage, and recognition memory loss.
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Affiliation(s)
- Estefania Fuentes
- Faculty of Chemical Sciences, Benemerita Autonomous University of Puebla, Puebla, Pue., Mexico
| | - Berenice Venegas
- Biological Sciences Faculty, Benemerita Autonomous University of Puebla, Puebla, Pue., Mexico
| | - Guadalupe Muñoz-Arenas
- Faculty of Chemical Sciences, Benemerita Autonomous University of Puebla, Puebla, Pue., Mexico
| | - Carolina Moran
- Institute of Sciences, Benemerita Autonomous University of Puebla, Puebla, Pue., Mexico
| | - Rubén A Vazquez-Roque
- Institute of Physiology, Benemerita Autonomous University of Puebla, Puebla, Pue., Mexico
| | - Gonzalo Flores
- Institute of Physiology, Benemerita Autonomous University of Puebla, Puebla, Pue., Mexico
| | - Samuel Treviño
- Faculty of Chemical Sciences, Benemerita Autonomous University of Puebla, Puebla, Pue., Mexico
| | - Alfonso Diaz
- Faculty of Chemical Sciences, Benemerita Autonomous University of Puebla, Puebla, Pue., Mexico
| | - Jorge Guevara
- Department of Biochemistry, Faculty of Medicine, National Autonomous University of Mexico, Mexico City, Mexico.
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7
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York E, Guevara J, Gómez J, Corripio R, Zapata C, Recarte M, Sánchez J, Larrañaga I, Fondevila C. Fluorescence guided fully endoscopic axillary dissection for locally advanced breast cancer. A feasible novel technique. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01421-6] [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: 11/19/2022]
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8
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Treviño S, Pulido G, Fuentes E, Handal-Silva A, Moreno-Rodríguez A, Venegas B, Flores G, Guevara J, Díaz A. Effect of cadmium administration on the antioxidant system and neuronal death in the hippocampus of rats. Synapse 2022; 76:1-16. [PMID: 35709361 DOI: 10.1002/syn.22242] [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: 12/09/2021] [Revised: 05/12/2022] [Accepted: 05/30/2022] [Indexed: 11/12/2022]
Abstract
Cadmium (Cd) is a heavy metal classified as a carcinogen whose exposure could affect the function of the central nervous system. Studies suggest that Cd modifies neuronal morphology in the hippocampus and affects cognitive tasks. The oxidative stress pathway is proposed as a mechanism of toxicity. However, this mechanism is not precise yet. This study aimed to evaluate the effect of Cd administration on oxidative stress markers in the male rat's hippocampus. Male Wistar rats were divided into (1) control (drinking water) and (2) treatment with Cd (32.5 ppm of cadmium chloride (CdCl2 ) in water). The Cd was administered for 2, 3, and 4 months. The results show that the oral administration of CdCl2 increased the concentration of Cd in plasma and hippocampus, and this response is time-dependent on its administration. Likewise, it caused an increase in lipid peroxidation and nitrosative stress markers. Moreover, it increased reactive astrogliosis and antioxidant enzyme activity. Consequently, the progression of the oxidative response exacerbated neurodegeneration in hippocampal cells. Our results suggest that Cd exposure induces a severe oxidative response that contributes critically to hippocampal neurodegeneration. It is suggested that exposure to Cd increases the risk of developing neurological diseases, which contributes to a decrease in the quality of life of the human and the environment in which it lives.
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Affiliation(s)
- Samuel Treviño
- Faculty of Chemical Sciences, Department of Pharmacy, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Guadalupe Pulido
- Faculty of Chemical Sciences, Department of Pharmacy, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Estefania Fuentes
- Faculty of Chemical Sciences, Department of Pharmacy, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Anabella Handal-Silva
- Department of Biology and Reproductive Toxicology, Science Institute, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Albino Moreno-Rodríguez
- Faculty of Chemical Sciences, Department of Pharmacy, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Berenice Venegas
- Biological Sciences Faculty, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Gonzalo Flores
- Neuropsychiatry Laboratory, Institute of Physiology, Benemerita Autonomous University of Puebla, Puebla, Mexico
| | - Jorge Guevara
- Faculty of Medicine, Department of Biochemistry, National Autonomous University of Mexico, Mexico City, Mexico
| | - Alfonso Díaz
- Faculty of Chemical Sciences, Department of Pharmacy, Benemerita Autonomous University of Puebla, Puebla, Mexico
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Mora-Gutiérrez A, Guevara J, Rubio C, Calvillo-Velasco M, Silva-Adaya D, Retana-Márquez S, Espinosa B, Martínez-Valenzuela C, Rubio-Osornio M. Clothianidin and Thiacloprid Mixture Administration Induces Degenerative Damage in the Dentate Gyrus and Alteration in Short-Term Memory in Rats. J Toxicol 2021; 2021:9983201. [PMID: 34858496 PMCID: PMC8632432 DOI: 10.1155/2021/9983201] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 03/03/2021] [Accepted: 11/09/2021] [Indexed: 11/20/2022] Open
Abstract
Neonicotinoids are pesticides that act as agonists of nicotinic receptors for acetylcholine in insects' central nervous system (CNS). Chronic exposure to neonicotinoids in humans is related to autism, memory loss, and finger tremor. In this article, we evaluate the effect of subchronic oral administration of two neonicotinoids in the same mixture: clothianidin and thiacloprid. Decreasing doses of both pesticides were administered to rats starting from the lethal dose 50 (LD50) reported by the manufacturer. Our results indicate that the administration of three doses of decreasing amounts of LD50 (5/10, 4/10, and 3/10 LD50) resulted in 100% death in all cases. Ten administration times of 2/10 LD50 of the mixture caused only 20% of death cases after twenty-seven days, which was determined as a subchronic administration scheme. The animals administered 2/10 LD50 showed behavioral alterations after the first and second administration. Electrographic studies showed abnormal discharge patterns in the CNS. 72 h after the tenth dose, learning and memory tests were performed in the Morris water maze. Our results revealed significant decreases in permanence at the quadrant and the number of crosses (P=0.0447, P=0.0193, respectively), which represent alterations in the short-term memory test, but there were no significant changes in a long-term memory test. Likewise, the brains of these animals showed tissue architecture loss, nucleosomal retraction, and a significant increase in the pycnosis of the granular neurons of the dentate gyrus analyzed at 72 h after the last dose (P=0.0125). Toxic effects and cognitive deterioration that have been found in communities living near contaminated areas are probably related to the agricultural use of neonicotinoids.
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Affiliation(s)
- Alejandra Mora-Gutiérrez
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía, Ciudad de México 14269, Mexico
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | - Carmen Rubio
- Departamento de Neurofisiología, Instituto Nacional de Neurología y Neurocirugía, Ciudad de México 14269, Mexico
| | - Minerva Calvillo-Velasco
- Laboratorio Experimental de Enfermedades Neurodegenerativas, Instituto Nacional de Neurología y Neurocirugía, 14269 Ciudad de México, Mexico
| | - Daniela Silva-Adaya
- Laboratorio Experimental de Enfermedades Neurodegenerativas, Instituto Nacional de Neurología y Neurocirugía, 14269 Ciudad de México, Mexico
| | - Socorro Retana-Márquez
- Departamento de Biología de la Reproducción, Laboratorio R012, Universidad Autónoma Metropolitana, Unidad Iztapalapa, Ciudad de México 09340, Mexico
| | - Blanca Espinosa
- Departamento de Bioquímica, Instituto Nacional de Enfermedades Respiratorias, ICV, Ciudad de México 14080, Mexico
| | | | - Moisés Rubio-Osornio
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía, Ciudad de México 14269, Mexico
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Diaz A, Muñoz-Arenas G, Venegas B, Vázquez-Roque R, Flores G, Guevara J, Gonzalez-Vergara E, Treviño S. Metforminium Decavanadate (MetfDeca) Treatment Ameliorates Hippocampal Neurodegeneration and Recognition Memory in a Metabolic Syndrome Model. Neurochem Res 2021; 46:1151-1165. [PMID: 33559829 DOI: 10.1007/s11064-021-03250-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 01/02/2021] [Accepted: 01/19/2021] [Indexed: 02/07/2023]
Abstract
The consumption of foods rich in carbohydrates, saturated fat, and sodium, accompanied by a sedentary routine, are factors that contribute to the progress of metabolic syndrome (MS). In this way, they cause the accumulation of body fat, hypertension, dyslipidemia, and hyperglycemia. Additionally, MS has been shown to cause oxidative stress, inflammation, and death of neurons in the hippocampus. Consequently, spatial and recognition memory is affected. It has recently been proposed that metformin decavanadate (MetfDeca) exerts insulin mimetic effects that enhance metabolism in MS animals; however, what effects it can cause on the hippocampal neurons of rats with MS are unknown. The objective of the work was to evaluate the effect of MetfDeca on hippocampal neurodegeneration and recognition memory in rats with MS. Administration of MetfDeca for 60 days in MS rats improved object recognition memory (NORt). In addition, MetfDeca reduced markers of oxidative stress and hippocampal neuroinflammation. Accompanied by an increase in the density and length of the dendritic spines of the hippocampus of rats with MS. We conclude that MetfDeca represents an important therapeutic agent to treat MS and induce neuronal and cognitive restoration mechanisms.
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Affiliation(s)
- Alfonso Diaz
- Faculty of Chemical Sciences, Benemerita Autonomous University of Puebla, Puebla, Pue, Mexico
| | - Guadalupe Muñoz-Arenas
- Faculty of Chemical Sciences, Benemerita Autonomous University of Puebla, Puebla, Pue, Mexico
| | - Berenice Venegas
- Faculty of Biological Sciences, Benemerita Autonomous University of Puebla, Puebla, Pue, Mexico
| | - Rubén Vázquez-Roque
- Laboratory of Neuropsychiatry, Institute of Physiology, Benemerita Autonomous University of Puebla, Puebla, Pue, Mexico
| | - Gonzalo Flores
- Laboratory of Neuropsychiatry, Institute of Physiology, Benemerita Autonomous University of Puebla, Puebla, Pue, Mexico
| | - Jorge Guevara
- Department of Biochemistry, Faculty of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
| | | | - Samuel Treviño
- Faculty of Chemical Sciences, Benemerita Autonomous University of Puebla, Puebla, Pue, Mexico.
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11
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Carcelén F, López M, Martín FS, Ara M, Bezada S, Ruiz-García L, Sandoval-Monzón R, López S, Guevara J. Effect of probiotics administration at different levels on the productive parameters of guinea pigs for fattening ( Cavia porcellus). Open Vet J 2021; 11:222-227. [PMID: 34307079 PMCID: PMC8288744 DOI: 10.5455/ovj.2021.v11.i2.6] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 03/30/2021] [Indexed: 11/09/2022] Open
Abstract
Background For more than 50 years, antibiotics have been used to maintain animal welfare and improve efficiency. Recently, antibiotics were found in the muscle, liver, and kidney of guinea pig carcasses put up for sale and human consumption, which is a public health issue. Probiotics are supplements of live microorganisms that, when administered in adequate doses, could replace growth-promoting antibiotics. Aim This study analyzed the effect of the administration of an oral probiotic mixture on the guinea pigs productive performance (Cavia porcellus). Methods Fifty male guinea pigs, weaned at 14 days of age, were distributed in a completely randomized design of five treatments with ten repetitions for each group. The treatments were CONTROL group without probiotic; PROB 1 given 1 ml of probiotic; PROB 2 with 2 ml of probiotic; PROB 3 with 3 ml of probiotic; and antibiotic growth promoter (AGP) was given 300 ppm zinc bacitracin. The microorganisms used in the probiotic were Enterococcus hirae, Lactobacillus reuteri, Lactobacillus frumenti, Lactobacillus johnsoni, Streptococcus thoraltensis, and Bacillus pumilus. Productive parameters were evaluated from weaning to 70 days of age. Results No statistically significant difference was found between the treatments on forage dry matter intake (DMI), concentrateconcentrate DMI, or total concentrate DMI (p > 0.05). Similarly, no statistical difference was found between the treatments in terms of final weight or weight gain (p > 0.05). Regarding the feed conversion ratio (FCR), there was a significant difference between treatments (p = 0.045); the CONTROL group had the highest FCR, followed by the AGP group, with the best FCR observed in the PROB 3 group (p < 0.05). In addition, significant statistical differences were found between CONTROL and PROB 2 (p < 0.05). Likewise, a significant linear effect of increasing doses of the probiotic was found (p = 0.01), which indicated that the feed conversion was better with a higher dose. Conclusion The treatments evaluated in this study significantly impacted the FCR in guinea pigs for fattening. Increasing doses of probiotics had a linear effect on FCR.
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Affiliation(s)
- Fernando Carcelén
- Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima, Perú
| | - Melissa López
- Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima, Perú
| | - Felipe San Martín
- Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima, Perú
| | - Miguel Ara
- Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima, Perú
| | - Sandra Bezada
- Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima, Perú
| | - Luis Ruiz-García
- Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima, Perú
| | - Rocío Sandoval-Monzón
- Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima, Perú
| | - Sofía López
- Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima, Perú
| | - Jorge Guevara
- Facultad de Química e Ingeniería Química, Universidad Nacional Mayor de San Marcos, Lima, Perú
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12
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Vazquez-Roque R, Pacheco-Flores M, Penagos-Corzo JC, Flores G, Aguilera J, Treviño S, Guevara J, Diaz A, Venegas B. The C-terminal fragment of the heavy chain of the tetanus toxin (Hc-TeTx) improves motor activity and neuronal morphology in the limbic system of aged mice. Synapse 2020; 75:e22193. [PMID: 33141999 DOI: 10.1002/syn.22193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 06/16/2020] [Revised: 10/24/2020] [Accepted: 10/27/2020] [Indexed: 12/23/2022]
Abstract
In the aging process, the brain presents biochemical and morphological alterations. The neurons of the limbic system show reduced size dendrites, in addition to the loss of dendritic spines. These disturbances trigger a decrease in motor and cognitive function. Likewise, it is reported that during aging, in the brain, there is a significant decrease in neurotrophic factors, which are essential in promoting the survival and plasticity of neurons. The carboxyl-terminal fragment of the heavy chain of the tetanus toxin (Hc-TeTx) acts similarly to neurotrophic factors, inducing neuroprotection in different models of neuronal damage. The aim here, was to evaluate the effect of Hc-TeTx on the motor processes of elderly mice (18 months old), and its impact on the dendritic morphology and density of dendritic spines of neurons in the limbic system. The morphological analysis in the dendrites was evaluated employing Golgi-Cox staining. Hc-TeTx was administered (0.5 mg/kg) intraperitoneally for three days in 18-month-old mice. Locomotor activity was evaluated in a novel environment 30 days after the last administration of Hc-TeTx. Mice treated with Hc-TeTx showed significant changes in their motor behavior, and an increased dendritic spine density of pyramidal neurons in layers 3 and 5 of the prefrontal cortex in the hippocampus, and medium spiny neurons of the nucleus accumbens (NAcc). In conclusion, the Hc-TeTx improves the plasticity of the brain regions of the limbic system of aged mice. Therefore, it is proposed as a pharmacological alternative to prevent or delay brain damage during aging.
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Affiliation(s)
- Ruben Vazquez-Roque
- Neuropsychiatry Laboratory, Institute of Physiology, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | | | | | - Gonzalo Flores
- Neuropsychiatry Laboratory, Institute of Physiology, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - José Aguilera
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Institut de Neurociències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona, Spain.,Networked Biomedical Research Center on Neurodegenerative Diseases (CIBERNED), Barcelona, Spain
| | - Samuel Treviño
- Faculty of Chemical Sciences, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Jorge Guevara
- Department of Biochemistry, Faculty of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
| | - Alfonso Diaz
- Faculty of Chemical Sciences, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Berenice Venegas
- Faculty of Biological Sciences, Benemérita Universidad Autónoma de Puebla, Puebla, México
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13
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Diaz A, Muñoz‐Arenas G, Caporal‐Hernandez K, Vázquez‐Roque R, Lopez‐Lopez G, Kozina A, Espinosa B, Flores G, Treviño S, Guevara J. Gallic acid improves recognition memory and decreases oxidative‐inflammatory damage in the rat hippocampus with metabolic syndrome. Synapse 2020; 75:e22186. [DOI: 10.1002/syn.22186] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/28/2020] [Accepted: 08/07/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Alfonso Diaz
- Facultad de Ciencias Quimicas Benemerita Universidad Autonoma de Puebla Puebla Mexico
| | | | | | - Rubén Vázquez‐Roque
- Laboratorio de Neuropsiquiatria Instituto de Fisiologia Benemerita Universidad Autonoma de Puebla Puebla Mexico
| | - Gustavo Lopez‐Lopez
- Facultad de Ciencias Quimicas Benemerita Universidad Autonoma de Puebla Puebla Mexico
| | - Anna Kozina
- Instituto de Química Universidad Nacional Autonoma de México Ciudad de Mexico Mexico
| | - Blanca Espinosa
- Departamento de Bioquimica Instituto Nacional de Enfermedades Respiratorias, ICV Ciudad de Mexico Mexico
| | - Gonzalo Flores
- Laboratorio de Neuropsiquiatria Instituto de Fisiologia Benemerita Universidad Autonoma de Puebla Puebla Mexico
| | - Samuel Treviño
- Facultad de Ciencias Quimicas Benemerita Universidad Autonoma de Puebla Puebla Mexico
| | - Jorge Guevara
- Departamento de Bioquimica Facultad de Medicina Universidad Nacional Autonoma de México Ciudad de Mexico Mexico
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14
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Muñoz-Arenas G, Pulido G, Treviño S, Vázquez-Roque R, Flores G, Moran C, Handal-Silva A, Guevara J, Venegas B, Díaz A. Effects of metformin on recognition memory and hippocampal neuroplasticity in rats with metabolic syndrome. Synapse 2020; 74:e22153. [PMID: 32190918 DOI: 10.1002/syn.22153] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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: 01/19/2020] [Revised: 03/06/2020] [Accepted: 03/15/2020] [Indexed: 12/18/2022]
Abstract
Metabolic syndrome (MS) is a health problem that is characterized by body fat accumulation, hypertension, dyslipidemia, and hyperglycemia; recently, it has been demonstrated that MS also damages memory processes. The first-line drug in the treatment of MS and type 2 diabetes mellitus is metformin, which is an antihyperglycemic agent. This drug has been shown to produce neuroprotection and to improve memory processes. However, the mechanism involved in this neuroprotection is unknown. A 90-day administration of metformin improved the cognitive processes of rats with MS as evaluated by the novel object recognition test, and this finding could be explained by an increase in the neuronal spine density and spine length. We also found that metformin increased the immunoreactivity of synaptophysin, sirtuin-1, AMP-activated protein kinase, and brain-derived neuronal factor, which are important plasticity markers. We conclude that metformin is an important therapeutic agent that increases neural plasticity and protects cognitive processes. The use of this drug is important in the minimization of the damage caused by MS.
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Affiliation(s)
- Guadalupe Muñoz-Arenas
- Facultad de Ciencias Quimicas, Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
| | - Guadalupe Pulido
- Facultad de Ciencias Quimicas, Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
| | - Samuel Treviño
- Facultad de Ciencias Quimicas, Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
| | - Rubén Vázquez-Roque
- Laboratorio de Neuropsiquiatria, Instituto de Fisiologia, Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
| | - Gonzalo Flores
- Laboratorio de Neuropsiquiatria, Instituto de Fisiologia, Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
| | - Carolina Moran
- Laboratorio de Histologia, Instituto de Ciencias, Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
| | - Anabella Handal-Silva
- Departamento de Biologia y Toxicologia de la Reproduccion, Instituto de Ciencias, Benemerita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Jorge Guevara
- Departamento de Bioquimica, Facultad de Medicina, Universidad Nacional Autonoma de México, Ciudad de Mexico, Mexico
| | - Berenice Venegas
- Facultad de Ciencias Biologicas, Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
| | - Alfonso Díaz
- Facultad de Ciencias Quimicas, Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
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15
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Dillon M, Guevara J, Mohammed K, Smith S, Dean E, McLellan L, Boylan Z, Spicer J, Forster M, Harrington K. A phase I study of ATR inhibitor, AZD6738, as monotherapy in advanced solid tumours (PATRIOT part A, B). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz244.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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16
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Dillon M, Boylan Z, Smith D, Guevara J, Mohammed K, Peckitt C, Saunders M, Banerji U, Clack G, Smith S, Spicer J, Forster M, Harrington K. PATRIOT: A phase I study to assess the tolerability, safety and biological effects of a specific ataxia telangiectasia and Rad3-related (ATR) inhibitor (AZD6738) as a single agent and in combination with palliative radiation therapy in patients with solid tumours. Clin Transl Radiat Oncol 2018; 12:16-20. [PMID: 30073210 PMCID: PMC6068075 DOI: 10.1016/j.ctro.2018.06.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 06/06/2018] [Indexed: 12/19/2022] Open
Abstract
PATRIOT is a phase I study of the ATR inhibitor, AZD6738, as monotherapy, and in combination with palliative radiotherapy. Here, we describe the protocol for this study, which opened in 2014 and is currently recruiting and comprises dose escalation of both drug and radiotherapy, and expansion cohorts.
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Affiliation(s)
- M.T. Dillon
- The Institute of Cancer Research, London, UK
- The Royal Marsden NHS Foundation Trust, London, UK
| | | | - D. Smith
- The Royal Marsden NHS Foundation Trust, London, UK
| | - J. Guevara
- The Royal Marsden NHS Foundation Trust, London, UK
| | - K. Mohammed
- The Royal Marsden NHS Foundation Trust, London, UK
| | - C. Peckitt
- The Royal Marsden NHS Foundation Trust, London, UK
| | | | - U. Banerji
- The Royal Marsden NHS Foundation Trust, London, UK
| | - G. Clack
- Department of Oncology and Metabolism, University of Sheffield Medical School, Beech Hill Road, SHEFFIELD S10 2RX, UK
| | | | | | - M.D. Forster
- University College London Hospitals NHS Foundation Trust and UCL Cancer Centre, London UK
| | - K.J. Harrington
- The Institute of Cancer Research, London, UK
- The Royal Marsden NHS Foundation Trust, London, UK
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17
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Ramos-Martinez I, Martínez-Loustalot P, Lozano L, Issad T, Limón D, Díaz A, Perez-Torres A, Guevara J, Zenteno E. Neuroinflammation induced by amyloid β25-35 modifies mucin-type O-glycosylation in the rat's hippocampus. Neuropeptides 2018; 67:56-62. [PMID: 29174415 DOI: 10.1016/j.npep.2017.11.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 11/17/2017] [Accepted: 11/17/2017] [Indexed: 01/24/2023]
Abstract
Amyloid-β (Aβ) plays a relevant role in the neurodegenerative process of Alzheimer's disease (AD). The 25-35 peptide of amyloid-β (Aβ25-35) induces the inflammatory response in brain experimental models. Mucin-type O-glycosylation has been associated with inflammation of brain tissues in AD, thus in this work, we aimed at identifying changes in the glycosylation profile generated by the injection of Aβ25-35 into the CA1 of the hippocampus of rats, using histochemistry with lectins. Our results indicate that 100μM Aβ25-35 induce increased recognition of the Amaranthus leucocarpus lectin (ALL) (specific for Galβ1,3-GalNAcα1,0-Ser/Thr); whereas concanavalin A (Con A) (specific for α-Man) showed no differences among treated and control groups of rats. Jacalin and peanut agglutinin (Galβ1,3GalNAcα1,0-Ser/Thr) showed no recognition of brain cells of control or treated rats. After 6-h treatment of the tissue with trypsin or with 200mM GalNAc, the interaction with ALL was inhibited. Immunohistochemistry showed positive anti-NeuN and ALL-recognition of neurons; however, anti-GFAP and anti-CD11b showed no co-localization with ALL. The ALL+ neurons revealed the presence of cytochrome C in the cytosol and active caspase 3 in the cytosol and nucleus. Administration of the interleukin-1 receptor antagonist (IL-1RA) to Aβ25-35-treated rats diminished neuroinflammation and ALL recognition. These results suggest a close relationship among over-expression of mucin-type O-glycosylation, the neuroinflammatory process, and neuronal death.
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Affiliation(s)
- Ivan Ramos-Martinez
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, 04510, Mexico; Posgrado en Ciencias Biomédicas, Universidad Nacional Autónoma de México, Av. Ciudad Universitaria 3000, C.P. 04510, Mexico
| | - Pamela Martínez-Loustalot
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, 04510, Mexico
| | - Liliana Lozano
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, 04510, Mexico
| | - Tarik Issad
- CNRS, Département d'Endocrinologie, Métabolisme et Cancer, Institut Cochin, 75014 Paris, France
| | - Daniel Limón
- Laboratorio de Neurofarmacología, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Alfonso Díaz
- Departamento de Farmacia, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Armando Perez-Torres
- Departamento de Biología Celular y Tisular, Facultad de Medicina, Universidad Nacional Autónoma de Mexico, 04510, Mexico
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, 04510, Mexico
| | - Edgar Zenteno
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, 04510, Mexico.
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Rojas-Gutierrez E, Muñoz-Arenas G, Treviño S, Espinosa B, Chavez R, Rojas K, Flores G, Díaz A, Guevara J. Alzheimer's disease and metabolic syndrome: A link from oxidative stress and inflammation to neurodegeneration. Synapse 2017. [PMID: 28650104 DOI: 10.1002/syn.21990] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [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: 12/12/2022]
Abstract
Alzheimer's disease (AD) is the most common cause of dementia and one of the most important causes of morbidity and mortality among the aging population. AD diagnosis is made post-mortem, and the two pathologic hallmarks, particularly evident in the end stages of the illness, are amyloid plaques and neurofibrillary tangles. Currently, there is no curative treatment for AD. Additionally, there is a strong relation between oxidative stress, metabolic syndrome, and AD. The high levels of circulating lipids and glucose imbalances amplify lipid peroxidation that gradually diminishes the antioxidant systems, causing high levels of oxidative metabolism that affects cell structure, leading to neuronal damage. Accumulating evidence suggests that AD is closely related to a dysfunction of both insulin signaling and glucose metabolism in the brain, leading to an insulin-resistant brain state. Four drugs are currently used for this pathology: Three FDA-approved cholinesterase inhibitors and one NMDA receptor antagonist. However, wide varieties of antioxidants are promissory to delay or prevent the symptoms of AD and may help in treating the disease. Therefore, therapeutic efforts to achieve attenuation of oxidative stress could be beneficial in AD treatment, attenuating Aβ-induced neurotoxicity and improve neurological outcomes in AD. The term inflammaging characterizes a widely accepted paradigm that aging is accompanied by a low-grade chronic up-regulation of certain pro-inflammatory responses in the absence of overt infection, and is a highly significant risk factor for both morbidity and mortality in the elderly.
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Affiliation(s)
- Eduardo Rojas-Gutierrez
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Guadalupe Muñoz-Arenas
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue, Mexico
| | - Samuel Treviño
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue, Mexico
| | - Blanca Espinosa
- Departamento de Bioquímica, Instituto Nacional de Enfermedades Respiratorias-INER, Ciudad de México, Mexico
| | - Raúl Chavez
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Karla Rojas
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Gonzalo Flores
- Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla, Puebla, Pue, Mexico
| | - Alfonso Díaz
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue, Mexico
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
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Diaz A, Treviño S, Vázquez-Roque R, Venegas B, Espinosa B, Flores G, Fernández-G JM, Montaño LF, Guevara J. The aminoestrogen prolame increases recognition memory and hippocampal neuronal spine density in aged mice. Synapse 2017; 71:e21987. [PMID: 28545157 DOI: 10.1002/syn.21987] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 12/16/2016] [Revised: 05/18/2017] [Accepted: 05/19/2017] [Indexed: 12/24/2022]
Abstract
The aging brain shows biochemical and morphological changes in the dendrites of pyramidal neurons from the limbic system associated with memory loss. Prolame (N-(3-hydroxy-1,3,5 (10)-estratrien-17β-yl)-3-hydroxypropylamine) is a non-feminizing aminoestrogen with antithrombotic activity that prevents neuronal deterioration, oxidative stress, and neuroinflammation. Our aim was to evaluate the effect of prolame on motor and cognitive processes, as well as its influence on the dendritic morphology of neurons at the CA1, CA3, and granule cells of the dentate gyrus (DG) regions of hippocampus (HP), and medium spiny neurons of the nucleus accumbens (NAcc) of aged mice. Dendritic morphology was assessed with the Golgi-Cox stain procedure followed by Sholl analysis. Prolame (60 µg/kg) was subcutaneously injected daily for 60 days in 18-month-old mice. Immediately after treatment, locomotor activity in a new environment and recognition memory using the Novel Object Recognition Task (NORT) were evaluated. Prolame-treated mice showed a significant increase in the long-term exploration quotient, but locomotor activity was not modified in comparison to control animals. Prolame-treated mice showed a significant increase in dendritic spines density and dendritic length in neurons of the CA1, CA3, and DG regions of the HP, whereas dendrites of neurons in the NAcc remained unmodified. In conclusion, prolame administration promotes hippocampal plasticity processes but not in the NAcc neurons of aged mice, thus improving long-term recognition memory. Prolame could become a pharmacological alternative to prevent or delay the brain aging process, and thus the emergence of neurodegenerative diseases that affect memory.
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Affiliation(s)
- Alfonso Diaz
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Pue, Mexico
| | - Samuel Treviño
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Pue, Mexico
| | - Rubén Vázquez-Roque
- Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla, Pue, Mexico
| | - Berenice Venegas
- Facultad de Ciencias Biológicas, Benemérita Universidad Autónoma de Puebla, Pue, Mexico
| | - Blanca Espinosa
- Departamento de Bioquímica, Instituto Nacional de Enfermedades Respiratorias INER, Ciudad de México, Mexico
| | - Gonzalo Flores
- Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla, Pue, Mexico
| | | | - Luis F Montaño
- Departamento de Biología Celular y Tisular, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
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20
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Lozano L, Guevara J, Lefebvre T, Ramos-Martinez I, Limón D, Díaz A, Cerón E, Zenteno E. Effect of amyloid-Β (25-35) in hyperglycemic and hyperinsulinemic rats, effects on phosphorylation and O-GlcNAcylation of tau protein. Neuropeptides 2017; 63:18-27. [PMID: 28427866 DOI: 10.1016/j.npep.2017.04.001] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 03/31/2017] [Accepted: 04/03/2017] [Indexed: 01/09/2023]
Abstract
Aggregation of the amyloid beta (Aβ) peptide and hyperphosphorylation of tau protein, which are markers of Alzheimer's disease (AD), have been reported also in diabetes mellitus (DM). One regulator of tau phosphorylation is O-GlcNAcylation, whereas for hyperphosphorylation it could be GSK3beta, which is activated in hyperglycemic conditions. With this in mind, both O-GlcNAcylation and phosphorylation of tau protein were evaluated in the brain of rats with streptozotocin (STZ)-induced hyperglycemia and hyperinsulinemia and treated with the Aß25-35 peptide in the hippocampal region CA1. Weight, glycated hemoglobin, glucose, and insulin were determined. Male Wistar rats were divided in groups (N=20): a) control, b) treated only with the Aβ25-35 peptide, c) treated with Aβ25-35 and STZ, and d) treated only with STZ. Results showed statistically significant differences in the mean weight, glucose levels, insulin concentration, and HbA1c percentage, between C- and D-treated groups and not STZ-treated A and B (P<0.05). Interestingly, our results showed diminution of O-GlcNAcylation and increase in P-tau-Ser-396 in the hippocampal area of the Aβ25-35- and STZ-treated groups; moreover, enhanced expression of GSK3beta was observed in this last group. Our results suggest that hyperinsulinemia-Aβ25-35-hyperglycemia is relevant for the down regulation of O-GlcNAcylation and up-regulation of the glycogen synthase kinase-3 beta (GSK3beta), favoring Aβ25-35-induced neurotoxicity in the brain of rats.
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Affiliation(s)
- Liliana Lozano
- Departamento de Bioquímica, Facultad de Medicina Universidad Nacional Autónoma de México, Av. Ciudad Universitaria 3000, C.P. 04510 Coyoacán, CDMX, Mexico; Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Av. Ciudad Universitaria 3000, C.P. 04510 Coyoacán, CDMX, Mexico
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina Universidad Nacional Autónoma de México, Av. Ciudad Universitaria 3000, C.P. 04510 Coyoacán, CDMX, Mexico
| | - Tony Lefebvre
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Ivan Ramos-Martinez
- Departamento de Bioquímica, Facultad de Medicina Universidad Nacional Autónoma de México, Av. Ciudad Universitaria 3000, C.P. 04510 Coyoacán, CDMX, Mexico
| | - Daniel Limón
- Laboratorio de Neurofarmacología, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Alfonso Díaz
- Departamento de Farmacia, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Eduarda Cerón
- Instituto Nacional de Enfermedades Respiratorias, "Ismael Cosío Villegas", Department of Biochemistry, Calz. de Tlalpan 4502, C.P. 14080 CDMX, Mexico
| | - Edgar Zenteno
- Departamento de Bioquímica, Facultad de Medicina Universidad Nacional Autónoma de México, Av. Ciudad Universitaria 3000, C.P. 04510 Coyoacán, CDMX, Mexico.
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Rubio-Osornio M, Orozco-Ibarra M, Díaz-Ruiz A, Brambila E, Boll MC, Monroy-Noyola A, Guevara J, Montes S, Ríos C. Copper sulfate pretreatment prevents mitochondrial electron transport chain damage and apoptosis against MPP +-induced neurotoxicity. Chem Biol Interact 2017; 271:1-8. [PMID: 28442376 DOI: 10.1016/j.cbi.2017.04.016] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 04/14/2017] [Accepted: 04/20/2017] [Indexed: 02/07/2023]
Abstract
Intrastriatal injection of 1-methyl-4-phenylpyridinium (MPP+) is considered a model to reproduce some biochemical alterations observed in Parkinson's disease (PD) patients. Among those alterations, inhibition of mitochondrial complex I activity, increased free radical production and reduced antioxidant responses have been reported. Copper (Cu) plays an important role in the metabolism and antioxidative responses through its participation as a cofactor in the cytochrome c oxidase enzyme (COX), Cu/Zn-superoxide dismutase (Cu/Zn-SOD), and metallothioneins. We tested the effect of copper sulfate (CuSO4) pretreatment on the mitochondrial electron transport chain (METC) in the striatum after MPP+ toxicity in rats. The results showed that the MPP+ intrastriatal injection reduced mitochondrial complex I, II, IV and V activities; while 10 μmol of CuSO4 pretreatment counteracted this damage. Activities of complexes I, II and IV, were coincident with ATP recovery. Moreover, Cu/Zn-SOD activity was reduced as a consequence of MPP+ damage; however, copper pre-treatment kept the striatal Cu/Zn-SOD activity unchanged in MPP+-damaged animals. We observed that MPP+ also reduced the metallothionein (MT) content and that CuSO4 pretreatment maintained baseline values. CuSO4 pretreatment also reduced the striatal caspase-3 and caspase-9 activities that were increased three days after MPP+-induced damage. The present study provided evidence that copper pretreatment reduced MPP+-induced apoptotic damage, probably through direct action on copper-dependent proteins or indirectly on proteins in the apoptotic pathway.
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Affiliation(s)
- Moisés Rubio-Osornio
- Laboratorio Experimental de Enfermedades Neurodegenerativas, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez S.S.A., Mexico
| | - Marisol Orozco-Ibarra
- Departamento de Neurobiología Celular y Molecular, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez S.S.A., Mexico
| | - Araceli Díaz-Ruiz
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez S.S.A., Mexico
| | - Eduardo Brambila
- Laboratorio de Investigaciones Químico-Clínicas, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Marie-Catherine Boll
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez S.S.A., Mexico
| | - Antonio Monroy-Noyola
- Laboratorio de Neuroprotección, Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Morelos, Mexico
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico
| | - Sergio Montes
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez S.S.A., Mexico
| | - Camilo Ríos
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez S.S.A., Mexico; Departamento de Sistemas Biológicos de la Universidad Autónoma Metropolitana, Unidad Xochimilco, Mexico.
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Treviño S, Vázquez-Roque RA, López-López G, Perez-Cruz C, Moran C, Handal-Silva A, González-Vergara E, Flores G, Guevara J, Díaz A. Metabolic syndrome causes recognition impairments and reduced hippocampal neuronal plasticity in rats. J Chem Neuroanat 2017; 82:65-75. [PMID: 28219715 DOI: 10.1016/j.jchemneu.2017.02.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [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: 10/13/2016] [Revised: 01/17/2017] [Accepted: 02/15/2017] [Indexed: 11/13/2022]
Abstract
Metabolic syndrome (MS) is a serious public health problem, which can promote neuronal alterations in cognitive regions related to learning and memory processes, such as the hippocampus. However, up to now there has been information of a regional segregation of this damage. In this study, we evaluate the MS effect on the neuronal morphology of the hippocampus. Our results demonstrate that 90days of a high-calorie diet alters the metabolic energy markers causing the MS and causes memory impairments, evaluated by the recognition of novel objects test (NORT). In addition, MS animals showed significant differences in dendritic order, total dendritic length and density of dendritic spines in CA1, CA3 and the dentate gyrus (DG) of the hippocampal area, compared with rats fed with a normocaloric diet (vehicle group). Furthermore, the immunoreactivity to synaptophysin (Syp) decreased in the hippocampus of the MS animals compared to the vehicle group. These results indicate that metabolic alterations induced by the MS affect hippocampal plasticity and hippocampal dependent memory processes.
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Affiliation(s)
- Samuel Treviño
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico
| | - Rubén A Vázquez-Roque
- Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico
| | - Gustavo López-López
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico
| | - Claudia Perez-Cruz
- Departamento de Farmacología, Centro de Investigaciones y Estudios Avanzados, CINVESTAV, Ciudad de México, Mexico
| | - Carolina Moran
- Departamento de Biología y Toxicología de la Reproducción, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico
| | - Anabella Handal-Silva
- Departamento de Biología y Toxicología de la Reproducción, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico
| | - Enrique González-Vergara
- Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico
| | - Gonzalo Flores
- Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Alfonso Díaz
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico.
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Abstract
The blood-brain barrier is the interface between the blood and brain, impeding the passage of most circulating cells and molecules, protecting the latter from foreign substances, and maintaining central nervous system homeostasis. However, its restrictive nature constitutes an obstacle, preventing therapeutic drugs from entering the brain. Usually, a large systemic dose is required to achieve pharmacological therapeutic levels in the brain, leading to adverse effects in the body. As a consequence, various strategies are being developed to enhance the amount and concentration of therapeutic compounds in the brain. One such tool is nanotechnology, in which nanostructures that are 1-100 nm are designed to deliver drugs to the brain. In this review, we examine many nanotechnology-based approaches to the treatment of neurodegenerative diseases. The review begins with a brief history of nanotechnology, followed by a discussion of its definition, the properties of most reported nanomaterials, their biocompatibility, the mechanisms of cell-material interactions, and the current status of nanotechnology in treating Alzheimer's, Parkinson's diseases, and amyotrophic lateral sclerosis. Of all strategies to deliver drug to the brain that are used in nanotechnology, drug release systems are the most frequently reported.
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Affiliation(s)
- Daniela Silva Adaya
- 1 Experimental Laboratory for Neurodegenerative Diseases, National Institute of Neurology and Neurosurgery, Manuel Velasco Suárez, México City, Mexico
| | - Lucinda Aguirre-Cruz
- 2 Laboratory of Neuroimmunoendocrinology, National Institute of Neurology and Neurosurgery, Manuel Velasco Suárez, México City, Mexico
| | - Jorge Guevara
- 3 Biochemistry Department, Faculty of Medicine, National Autonomous University of Mexico, Mèxico City, Mexico
| | - Emma Ortiz-Islas
- 4 Nanotechnology Laboratory, National Institute of Neurology and Neurosurgery, México City, Manuel Velasco Suárez, Mexico
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Cruz-González T, Cortez-Torres E, Perez-Severiano F, Espinosa B, Guevara J, Perez-Benitez A, Melendez FJ, Díaz A, Ramírez RE. Antioxidative stress effect of epicatechin and catechin induced by Aβ 25-35 in rats and use of the electrostatic potential and the Fukui function as a tool to elucidate specific sites of interaction. Neuropeptides 2016; 59:89-95. [PMID: 27118677 DOI: 10.1016/j.npep.2016.04.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 04/12/2016] [Accepted: 04/12/2016] [Indexed: 11/20/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder caused by the aggregation of the amyloid-beta peptide (Aβ) in senile plaques and cerebral vasculature. The Aβ25-35 fraction has shown the most toxicity; its neurotoxic mechanisms are associated with the generation of oxidative stress and reactive astrogliosis that induce neuronal death and memory impairment. Studies indicate that pharmacological treatment with flavonoids reduces the rate of AD, in particular, it has been shown that antioxidants are compounds that could interact with this peptide due to their antioxidant proprieties. In this study, experimental and computational tools were used to calculate the molecular electrostatic potential and the Fukui function with the Gaussian 09 computational program, to predict the most reactive parts of these molecules and make the complex between Aβ25-35 and two flavonoids (catechin and epicatechin) in the absolute gas-phase, where a possible interaction between them was observed. This is important for understanding the Aβ25-35-Flavonoid (A-F) interaction as a therapeutic strategy to inhibit the neurotoxic effects that this peptide causes in AD, which currently is still considered an ambiguous process.
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Affiliation(s)
- Trinidad Cruz-González
- Departamento de Fisicomatematicas, Facultad de Ciencias Químicas Benemérita Universidad Autónoma de Puebla, Av. San Claudio y 14 Sur, Col. San Manuel, Puebla, Pue. 72570, Mexico
| | - Estephania Cortez-Torres
- Laboratorio Experimental de Enfermedades Neurodegenrativas, Instituto Nacional de Neurología y Neurocirugía, Manuel Velasco Suárez, 14269 Mexico City, Mexico
| | - Francisca Perez-Severiano
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía, Manuel Velasco Suárez, 14269 Mexico City, Mexico
| | - Blanca Espinosa
- Departamento de Bioquímica, Instituto Nacional de Enfermedades Respiratorias, Mexico, D.F., Mexico
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Aarón Perez-Benitez
- Departamento de Química Organica, Facultad de Ciencias Químicas, Benemérita, Universidad Autónoma de Puebla, Av. San Claudio y 14 Sur, Col. San Manuel, Puebla, Pue. 72570, Mexico
| | - Francisco J Melendez
- Lab. de Química Teórica, Centro de Investigación, Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Edif. 105-I, San Claudio y 22 Sur, Ciudad Universitaria, Col. San Manuel, Puebla, Puebla 72570, Mexico
| | - Alfonso Díaz
- Departamento de Farmacia, Facultad de Ciencias Químicas Benemérita Universidad Autónoma de Puebla, Av. San Claudio y 14 Sur, Col. San Manuel, Puebla, Pue. 72570, Mexico.
| | - Ramsés E Ramírez
- Departamento de Fisicomatematicas, Facultad de Ciencias Químicas Benemérita Universidad Autónoma de Puebla, Av. San Claudio y 14 Sur, Col. San Manuel, Puebla, Pue. 72570, Mexico.
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Cherrez Ojeda I, Calderon JC, Guevara J, Cabrera D, Calero E, Cherrez A. Exogenous lipid pneumonia related to long-term use of Vicks VapoRub® by an adult patient: a case report. BMC Ear Nose Throat Disord 2016; 16:11. [PMID: 27547123 PMCID: PMC4992226 DOI: 10.1186/s12901-016-0032-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 08/09/2016] [Indexed: 01/15/2023]
Abstract
Background Use of petroleum-based over the counter remedies such as Vicks VapoRub to alleviate symptoms of rhinitis is common and can be effective, but carries under-appreciated risks of adverse side effects. In this case report we highlight Exogenous Lipoid Pneumonia (ELP), an uncommon condition that results from accumulation of exogenous lipids in the alveoli, as an adverse side effect of long-term Vicks VapoRub use. Case presentation We present the case of an 85-year-old female patient with ELP apparently due to continuous application of Vicks VapoRub® to her nostrils to alleviate chronic rhinitis. She was diagnosed incidentally via chest radiograph and computed tomography (CT) scan done as follow up to finding elevated C-reactive Protein during a routine exam. The CT scan revealed a pulmonary consolidation in the lower lobe of the right lung with fat density combined with low density areas associated with focal ground-glass opacities. The patient was advised to discontinue use of petroleum-based products, and was prescribed intranasal corticosteroids for her rhinitis. Follow up 2 years later showed that the lipid consolidation had diminished in size by approximately 10 %. Conclusion Physicians must be aware that ELP can develop as a result of long-term application of petroleum-based oils and ointments to the nose and discourage such use of these products. Patients who have used petroleum-based products in this way should be screened for ELP. CT scan is the best imaging modality for establishing the diagnosis. The treatment of this condition is not well defined, but, as shown in this case, the size of the lipid mass can decrease after use of petroleum based substances is discontinued. Electronic supplementary material The online version of this article (doi:10.1186/s12901-016-0032-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- I Cherrez Ojeda
- Universidad de Especialidades Espiritu Santo, School of Medicine, Samborondón, Guayas, 09150 Guayaquil, Ecuador ; Respiralab, Respiralab Research Group, Guayaquil, Ecuador
| | - J C Calderon
- Universidad de Especialidades Espiritu Santo, School of Medicine, Samborondón, Guayas, 09150 Guayaquil, Ecuador ; Respiralab, Respiralab Research Group, Guayaquil, Ecuador
| | | | - D Cabrera
- Universidad de Especialidades Espiritu Santo, School of Medicine, Samborondón, Guayas, 09150 Guayaquil, Ecuador ; Respiralab, Respiralab Research Group, Guayaquil, Ecuador
| | - E Calero
- Respiralab, Respiralab Research Group, Guayaquil, Ecuador
| | - A Cherrez
- Respiralab, Respiralab Research Group, Guayaquil, Ecuador ; University of Heidelberg, School of Medicine, Heidelberg, Germany
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Ginard D, Khorrami S, Pérez-Carazo L, Tavío-Hernández E, López-Sanromán A, García-Alvarado M, Muñoz F, Ibáñez-Samaniego L, Marín-Jiménez I, Guevara J, Casellas F. [Efficacy and effectiveness of biologic therapy in inflammatory bowel disease. EFIFECT study]. Gastroenterol Hepatol 2016; 39:369-76. [PMID: 27005800 DOI: 10.1016/j.gastrohep.2016.02.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 01/28/2016] [Accepted: 02/03/2016] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Randomized controlled trials provide the best scientific evidence for the efficacy of biological drugs in inflammatory bowel disease (IBD). However, findings obtained from these trials might not be reproducible in clinical practice. This study aimed to estimate the percentage of patients with IBD treated with biologics who would have been eligible for randomized controlled trials, and to compare the theoretical efficacy of biological drugs with their effectiveness in clinical practice. METHODS We performed a retrospective multicenter study in 375 patients with IBD treated with anti-TNF agents and followed-up for 1 year. The eligibility criteria for the trial were taken from the ACCENT, SONIC, ACT, CLASSIC and CHARM trials. Eligible patients were included in a second analysis to compare results in clinical practice versus those hypothetically obtained if the patient had been included in a trial. RESULTS Only 45.6% of 375 patients would have been eligible for pivotal trials. One-year clinical benefit (remission or response) was similar for eligible and non-eligible cohorts (68.4% vs. 68.6%, P=.608). The clinical benefit was greater for current clinical practice than for a hypothetical trial situation (68.4% vs. 44.4%, P<.001) in eligible patients. CONCLUSION More than half of patients with IBD treated with biologic drugs would not be represented in pivotal trials. The effectiveness of anti-TNF drugs in clinical practice exceeds their theoretical efficacy.
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Affiliation(s)
- Daniel Ginard
- Departamento de Gastroenterología, Hospital Universitario Son Espases, Institut d'Investigació Sanitària de Palma, Palma de Mallorca, España.
| | - Sam Khorrami
- Departamento de Gastroenterología, Hospital Universitario Son Espases, Institut d'Investigació Sanitària de Palma, Palma de Mallorca, España
| | - Leticia Pérez-Carazo
- Departamento de Gastroenterología, Hospital Universitario Son Espases, Institut d'Investigació Sanitària de Palma, Palma de Mallorca, España
| | | | | | | | - Fernando Muñoz
- Unidad de Gastroenterología, Complejo Hospitalario de León, León, España
| | - Luis Ibáñez-Samaniego
- Departamento de Gastroenterología e Instituto de Investigación Sanitaria Gregorio Marañón, Hospital Universitario Gregorio Marañón, Madrid, España
| | - Ignacio Marín-Jiménez
- Departamento de Gastroenterología e Instituto de Investigación Sanitaria Gregorio Marañón, Hospital Universitario Gregorio Marañón, Madrid, España
| | - Jorge Guevara
- Unitat Atenció Crohn-Colitis, Hospital Universitario Vall d'Hebron, Barcelona, España; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Barcelona, España
| | - Francesc Casellas
- Unitat Atenció Crohn-Colitis, Hospital Universitario Vall d'Hebron, Barcelona, España; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Barcelona, España
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27
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Treviño S, Aguilar-Alonso P, Flores Hernandez JA, Brambila E, Guevara J, Flores G, Lopez-Lopez G, Muñoz-Arenas G, Morales-Medina JC, Toxqui V, Venegas B, Diaz A. A high calorie diet causes memory loss, metabolic syndrome and oxidative stress into hippocampus and temporal cortex of rats. Synapse 2015; 69:421-33. [DOI: 10.1002/syn.21832] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 05/20/2015] [Accepted: 06/08/2015] [Indexed: 01/08/2023]
Affiliation(s)
- Samuel Treviño
- Facultad de Ciencias Químicas; Departamento de Análisis Clínicos; Benemérita Universidad Autónoma de Puebla; CP 72570 Puebla Mexico
| | - Patrícia Aguilar-Alonso
- Facultad de Ciencias Químicas; Departamento de Bioquímica; Benemérita Universidad Autónoma de Puebla; CP 72570 Puebla Mexico
| | - Jose Angel Flores Hernandez
- Facultad de Ciencias Químicas; Departamento de Análisis Clínicos; Benemérita Universidad Autónoma de Puebla; CP 72570 Puebla Mexico
| | - Eduardo Brambila
- Facultad de Ciencias Químicas; Departamento de Análisis Clínicos; Benemérita Universidad Autónoma de Puebla; CP 72570 Puebla Mexico
| | - Jorge Guevara
- Facultad de Medicina; Departamento de Bioquímica; Universidad Nacional Autónoma de México; CP 04510 DF Mexico
| | - Gonzalo Flores
- Laboratorio de Neuropsiquiatría, Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla; CP 72570 Puebla Mexico
| | - Gustavo Lopez-Lopez
- Facultad de Ciencias Químicas; Departamento de Farmacia; Benemérita Universidad Autónoma de Puebla; CP 72570 Puebla Mexico
| | - Guadalupe Muñoz-Arenas
- Facultad de Ciencias Químicas; Departamento de Farmacia; Benemérita Universidad Autónoma de Puebla; CP 72570 Puebla Mexico
| | - Julio Cesar Morales-Medina
- Centro de Investigación en Reproducción Animal, CINVESTAV, Universidad Autónoma de Tlaxcala; Tlaxcala de Xicohténcatl Mexico
| | - Veronica Toxqui
- Facultad de Ciencias Químicas; Departamento de Análisis Clínicos; Benemérita Universidad Autónoma de Puebla; CP 72570 Puebla Mexico
- Laboratorio Experimental de Enfermedades Neurodegenerativas, INNN-MVS; CP14269 Mexico DF Mexico
| | - Berenice Venegas
- Laboratorio de Biologia y Toxicologia de la Reproduccion Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla; CP.72570 Puebla Mexico
| | - Alfonso Diaz
- Facultad de Ciencias Químicas; Departamento de Farmacia; Benemérita Universidad Autónoma de Puebla; CP 72570 Puebla Mexico
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Lazcano Z, Solis O, Díaz A, Brambila E, Aguilar-Alonso P, Guevara J, Flores G. Dendritic morphology changes in neurons from the ventral hippocampus, amygdala and nucleus accumbens in rats with neonatal lesions into the prefrontal cortex. Synapse 2015; 69:314-25. [DOI: 10.1002/syn.21815] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 03/09/2015] [Accepted: 03/09/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Zayda Lazcano
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología, Universidad Autónoma de Puebla; Puebla México
| | - Oscar Solis
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología, Universidad Autónoma de Puebla; Puebla México
| | - Alfonso Díaz
- Facultad de Ciencias Químicas; Universidad Autónoma de Puebla; Puebla México
| | - Eduardo Brambila
- Facultad de Ciencias Químicas; Universidad Autónoma de Puebla; Puebla México
| | | | - Jorge Guevara
- Department de Bioquímica, Facultad de Medicina; Universidad Nacional Autónoma de México. D.F.; México
| | - Gonzalo Flores
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología, Universidad Autónoma de Puebla; Puebla México
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Affiliation(s)
| | - George Perry
- College of Sciences, The University of Texas at San Antonio, San Antonio, Texas, USA
| | - Jorge Guevara
- Department of Biochemistry, Faculty of Medicine, UNAM, Mexico City, Mexico
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30
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Lazcano Z, Solis O, Bringas ME, Limón D, Diaz A, Espinosa B, García-Peláez I, Flores G, Guevara J. Unilateral injection of Aβ25-35in the hippocampus reduces the number of dendritic spines in hyperglycemic rats. Synapse 2014; 68:585-594. [DOI: 10.1002/syn.21770] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 07/15/2014] [Indexed: 02/05/2023]
Affiliation(s)
- Zayda Lazcano
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología Benemérita Universidad Autónoma de Puebla; Puebla México
| | - Oscar Solis
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología Benemérita Universidad Autónoma de Puebla; Puebla México
| | - María Elena Bringas
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología Benemérita Universidad Autónoma de Puebla; Puebla México
| | - Daniel Limón
- Laboratorio de Neurofarmacología, Facultad de Ciencias Químicas; Benemérita Universidad Autónoma de Puebla; Puebla México
| | - Alfonso Diaz
- Departamento de Farmacia, Facultad de Ciencias Químicas; Benemérita Universidad Autónoma de Puebla; Puebla México
- Laboratorio Experimental de Enfermedades Neurodegenerativas; Instituto Nacional de Neurología y Neurocirugía; Ciudad de México Distrito Federal México
- Departamento de Bioquímica, Facultad de Medicina; Universidad Nacional Autónoma de México; Ciudad de México Distrito Federal México
| | - Blanca Espinosa
- Laboratorio de Bioquímica, Instituto Nacional de Enfermedades Respiratorias; Ciudad de México Distrito Federal México
| | - Isabel García-Peláez
- Departamento de Biología Celular y Tisular, Facultad de Medicina; Universidad Nacional Autónoma de México; Ciudad de México Distrito Federal México
| | - Gonzalo Flores
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología Benemérita Universidad Autónoma de Puebla; Puebla México
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina; Universidad Nacional Autónoma de México; Ciudad de México Distrito Federal México
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Ortega L, Calvillo M, Luna F, Pérez-Severiano F, Rubio-Osornio M, Guevara J, Limón ID. 17-AAG improves cognitive process and increases heat shock protein response in a model lesion with Aβ25-35. Neuropeptides 2014; 48:221-32. [PMID: 24819277 DOI: 10.1016/j.npep.2014.04.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 03/14/2014] [Accepted: 04/15/2014] [Indexed: 11/22/2022]
Abstract
Molecular chaperones, or heat shock proteins (HSP), have been implicated in numerous neurodegenerative disorders characterized by the accumulation of protein aggregates, such as Alzheimer disease. The agglomeration of insoluble structures of Aβ is thought to be responsible for neuronal death, which in turn leads to the loss of cognitive functions. Recent findings have shown that the induction of HSP decreases the level of abnormal protein aggregates, as well as demonstrating that 17-(allylamino)-17-demethoxygeldanamycin (17-AAG), an analogue of geldanamycin (GA), increases Aβ clearance through the induction of molecular chaperones in cell culture. In light of this discovery that HSP overexpression can be neuroprotective, the search for a way to pharmacologically induce the overexpression of HSP and other associated chaperones may lead to a promising approach for the treatment of neurodegenerative diseases. The aim of our study was to evaluate both the effect of 17-AAG on the cognitive process and the HSP response in rats injected with Aβ25-35 into the CA1 of the hippocampus. The results show that the injection of Aβ caused a significant increase in the expression of the HSP involved in the regulation of cellular proteostasis. While the HSP did not reverse excitotoxic damage, given that experimental subjects showed learning and memory deficits, the administration of 17-AAG prior to the injection of Aβ25-35 did show an improvement in the behavioral assessment that correlated with the upregulation of HSP70 in subjects injured with Aβ. Overall, our data shows that the pharmacological induction of HSP using 17-AAG may be an alternative treatment of neurodegenerative diseases.
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Affiliation(s)
- Laura Ortega
- Laboratorio de Neurofarmacología, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, México D.F. 04510, Mexico.
| | - Minerva Calvillo
- Laboratorio Experimental de Enfermedades Neurodegenerativas, Instituto Nacional de Neurología y Neurocirugía, México D.F. 14269, Mexico.
| | - Félix Luna
- Laboratorio de Neurofarmacología, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico.
| | - Francisca Pérez-Severiano
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía, México D.F. 14269, Mexico.
| | - Moisés Rubio-Osornio
- Laboratorio Experimental de Enfermedades Neurodegenerativas, Instituto Nacional de Neurología y Neurocirugía, México D.F. 14269, Mexico.
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, México D.F. 04510, Mexico.
| | - Ilhuicamina Daniel Limón
- Laboratorio de Neurofarmacología, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico.
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Díaz A, Rojas K, Espinosa B, Chávez R, Zenteno E, Limón D, Guevara J. Aminoguanidine treatment ameliorates inflammatory responses and memory impairment induced by amyloid-beta 25-35 injection in rats. Neuropeptides 2014; 48:153-9. [PMID: 24703968 DOI: 10.1016/j.npep.2014.03.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 02/18/2014] [Accepted: 03/14/2014] [Indexed: 11/24/2022]
Abstract
Alzheimer disease (AD) is a neurodegenerative disorder caused by accumulation of the amyloid-beta peptide (Aβ) in neuritic plaques. Its neurotoxic mechanisms are associated with inflammatory responses and nitrosative stress generation that promote expression of inducible nitric oxide synthase (iNOS) and increased nitric oxide causing neuronal death and memory impairment. Studies suggest that treatment with anti-inflammatory and anti-oxidant agents decreases the risk of developing AD. Aminoguanidine (AG) is an iNOS inhibitor with anti-inflammatory and anti-oxidant effects. In this study, we evaluated the effects of systemic administration of AG (100 mg/kg/day for 4 days) on spatial memory and inflammatory responses induced by an injection of Aβ(25-35) [100 μM] into the temporal cortex (TCx) of rats. A significant improvement of spatial memory was evident in the Aβ(25-35)-treated group at day 30 post-injection subjected to AG treatment; this effect was correlated with decreases in reactive gliosis, IL-1β, TNF-α, and nitrite levels, as well as a reduction in neurodegeneration in the TCx and hippocampus (Hp). These results suggest that AG treatment inhibited glia activation and cytokine release, which may help to counteract neurodegenerative events induced by the toxicity of Aβ.
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Affiliation(s)
- Alfonso Díaz
- Facultad de Ciencias Químicas, BUAP, Puebla, PL, Mexico; Laboratorio Experimental de Enfermedades Neurodegenerativas, INNN-MVS, Mexico, DF, Mexico; Departamento de Bioquímica, Facultad de Medicina, UNAM, Mexico, DF, Mexico
| | - Karla Rojas
- Laboratorio Experimental de Enfermedades Neurodegenerativas, INNN-MVS, Mexico, DF, Mexico
| | | | - Raúl Chávez
- Departamento de Bioquímica, Facultad de Medicina, UNAM, Mexico, DF, Mexico
| | - Edgar Zenteno
- Departamento de Bioquímica, Facultad de Medicina, UNAM, Mexico, DF, Mexico
| | - Daniel Limón
- Facultad de Ciencias Químicas, BUAP, Puebla, PL, Mexico
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina, UNAM, Mexico, DF, Mexico.
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Calvillo M, Diaz A, Limon DI, Mayoral MA, Chánez-Cárdenas ME, Zenteno E, Montaño LF, Guevara J, Espinosa B. Amyloid-β(25-35) induces a permanent phosphorylation of HSF-1, but a transitory and inflammation-independent overexpression of Hsp-70 in C6 astrocytoma cells. Neuropeptides 2013; 47:339-46. [PMID: 23850171 DOI: 10.1016/j.npep.2013.06.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 05/17/2013] [Accepted: 06/12/2013] [Indexed: 11/28/2022]
Abstract
Two hallmarks of Alzheimer diseases are the continuous inflammatory process, and the brain deposit of Amyloid b (Aβ), a cytotoxic protein. The intracellular accumulation of Aβ(25-35) fractions, in the absence of Heat Shock proteins (Hsṕs), could be responsible for its cytotoxic activity. As, pro-inflammatory mediators and nitric oxide control the expression of Hsṕs, our aim was to investigate the effect of Aβ(25-35) on the concentration of IL-1β, TNF-α and nitrite levels, and their relation to pHSF-1, Hsp-60, -70 and -90 expressions, in the rat C6 astrocyte cells. Interleukin-specific ELISA kits, immunohistochemistry with monoclonal anti-Hsp and anti pHSF-1 antibodies, and histochemistry techniques, were used. Our results showed that Aβ25-35 treatment of C6 cells increased, significantly and consistently the concentration of IL-1β, TNF-α and nitrite 3 days after initiating treatment. The immunoreactivity of C6 cells to Hsp-70 reached its peak after 3 days of treatment followed by an abrupt decrease, as opposed to Hsp-60 and -90 expressions that showed an initial and progressive increase after 3 days of Aβ(25-35) treatment. pHSF-1 was identified throughout the experimental period. Nevertheless, progressive and sustained cell death was observed during all the treatment times and it was not caspase-3 dependent. Our results suggest that Hsp-70 temporary expression serves as a trigger to inhibit casapase-3 pathway and allow the expression of Hsp-60 and -90 in C6 astrocytoma cells stimulated with Aβ(25-35).
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Affiliation(s)
- Minerva Calvillo
- Laboratorio Experimental de Enfermedades Neurodegenerativas, Instituto Nacional de Neurología y Neurocirugía "MVS", Mexico D.F. 14059, Mexico
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Solórzano C, Ángel Mayoral M, Angeles Carlos MDL, Berumen J, Guevara J, Raúl Chávez F, Mendoza-Hernández G, Agundis C, Zenteno E. Overexpression of glycosylated proteins in cervical cancer recognized by the Machaerocereus eruca agglutinin. Folia Histochem Cytobiol 2012. [DOI: 10.5603/fhc.2012.0054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Solórzano C, Angel Mayoral M, de los Angeles Carlos M, Berumen J, Guevara J, Raúl Chávez F, Mendoza-Hernández G, Agundis C, Zenteno E. Overexpression of glycosylated proteins in cervical cancer recognized by the Machaerocereus eruca agglutinin. Folia Histochem Cytobiol 2012; 50:398-406. [PMID: 23042270 DOI: 10.5603/19748] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Accepted: 10/08/2012] [Indexed: 11/25/2022] Open
Abstract
In cervical cancer, glycosylation has been suggested as being involved in both its carcinogenesis and invasive capacity. In this work, we analyzed mucin type O-glycosylation in biopsies of invasive cervical cancer in FIGO stage II B through histochemistry using lectins specific for O-glycosidically linked glycans. Our results reveal that the lectin Machaerocereus eruca (MeA, specific for Gal in a Fucα1,2 (GalNAcα1,3) Galβ1,4) showed increased recognition of tumoral cells and tumoral stroma tissue compared to other lectins with similar specificity; healthy cervical tissue was negative for MeA. Trypsin treatment of recognized tissues abolished MeA's recognition;moreover, interaction of MeA was inhibited with oligosaccharides from mucin. As demonstrated by Western blot of 2-D electrophoresis, MeA recognized ten glycoproteins in the range from 122 to 42 kDa in cervical cancer lysates. The LC-ESI-MS/MS analysis of the MeAs' recognized peptides revealed that the latter matched mainly with the amino acid sequences of lamin A/C, vimentin, elongation factor 2, keratin 1, and beta actin. Our results suggest that MeA recognizes a complex of over-expressed O-glycosidically-linked proteins that play a relevant role in cervical cancer's invasive capacity. O-glycosylation participates in the disassembly of intercellular junctions favoring cancer progression.
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Affiliation(s)
- Carlos Solórzano
- Laboratorio de Inmunologia, Departamento de Bioquimica, Facultad de Medicina, UNAM, Mexico
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Mendieta L, Bautista E, Sánchez A, Guevara J, Herrando-Grabulosa M, Moran J, Martínez R, Aguilera J, Limón ID. The C-terminal domain of the heavy chain of tetanus toxin given by intramuscular injection causes neuroprotection and improves the motor behavior in rats treated with 6-hydroxydopamine. Neurosci Res 2012; 74:156-67. [DOI: 10.1016/j.neures.2012.08.006] [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: 05/09/2012] [Revised: 08/21/2012] [Accepted: 08/24/2012] [Indexed: 12/24/2022]
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Limón D, Díaz A, Hernandez M, Fernandez-G JM, Torres-Martínez AC, Pérez-Severiano F, Rendón-Huerta EP, Montaño LF, Guevara J. Corrigendum to “Neuroprotective effect of the aminoestrogen prolame against impairment of learning and memory skills in rats injected with amyloid-β-25–35 into the hippocampus” [Eur. J. Pharmacol. 685 (2012) 74–80]. Eur J Pharmacol 2012. [DOI: 10.1016/j.ejphar.2012.06.005] [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: 11/28/2022]
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Diaz A, Limon D, Chávez R, Zenteno E, Guevara J. Aβ25-35 Injection into the Temporal Cortex Induces Chronic Inflammation that Contributes to Neurodegeneration and Spatial Memory Impairment in Rats. ACTA ACUST UNITED AC 2012; 30:505-22. [DOI: 10.3233/jad-2012-111979] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Alfonso Diaz
- Laboratorio de Neurofarmacología, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico D.F., Mexico
- Laboratorio Experimental de Enfermedades Neurodegenerativas, Instituto Nacional de Neurología y Neurocirugía-MVS, Mexico D.F., Mexico
| | - Daniel Limon
- Laboratorio de Neurofarmacología, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Raúl Chávez
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico D.F., Mexico
| | - Edgar Zenteno
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico D.F., Mexico
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico D.F., Mexico
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Machado-Salas J, Avila-Costa MR, Guevara P, Guevara J, Durón RM, Bai D, Tanaka M, Yamakawa K, Delgado-Escueta AV. Ontogeny of Lafora bodies and neurocytoskeleton changes in Laforin-deficient mice. Exp Neurol 2012; 236:131-40. [PMID: 22542948 DOI: 10.1016/j.expneurol.2012.04.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 04/06/2012] [Accepted: 04/11/2012] [Indexed: 11/29/2022]
Abstract
Lafora disease (LD) is an autosomal recessive, always fatal progressive myoclonus epilepsy with rapid cognitive and neurologic deterioration. One of the pathological hallmarks of LD is the presence of cytoplasmic PAS+polyglucosan inclusions called Lafora bodies (LBs). Current clinical and neuropathological views consider LBs to be the cause of neurological derangement of patients. A systematic study of the ontogeny and structural features of the LBs has not been done in the past. Therefore, we undertook a detailed microscopic analysis of the neuropile of a Laforin-deficient (epm2a-/-) mouse model. Wild type and epm2a-/- mice were sacrificed at different ages and their encephalon processed for light microscopy. Luxol-fast-blue, PAS, Bielschowski techniques, as well as immunocytochemistry (TUNEL, Caspase-3, Apaf-1, Cytochrome-C and Neurofilament L antibodies) were used. Young null mice (11 days old) showed necrotic neuronal death in the absence of LBs. Both cell death and LBs showed a progressive increment in size and number with age. Type I LBs emerged at two weeks of age and were distributed in somata and neurites. Type II LBs appeared around the second month of age and always showed a complex architecture and restricted to neuronal somata. Their number was considerably less than type I LBs. Bielschowski method showed neurofibrillary degeneration and senile-like plaques. These changes were more prominent in the hippocampus and ventral pons. Neurofibrillary tangles were already present in 11 days-old experimental animals, whereas senile-like plaques appeared around the third to fourth month of life. The encephalon of null mice was not uniformly affected: Diencephalic structures were spared, whereas cerebral cortex, basal ganglia, pons, hippocampus and cerebellum were notoriously affected. This uneven distribution was present even within the same structure, i.e., hippocampal sectors. Of special relevance, was the observation of the presence of immunoreactivity to neurofilament L on the external rim of type II LBs. Perhaps, type II LB is not the end point of a metabolic abnormality. Instead, we suggest that type II LB is a highly specialized structural and functional entity that emerges as a neuronal response to major carbohydrate metabolism impairment. Early necrotic cell death, neurocytoskeleton derangement, different structural and probably functional profiles for both forms of LBs, a potential relationship between the external rim of the LB type II and the cytoskeleton and an uneven distribution of these abnormalities indicate that LD is both a complex neurodegenerative disease and a glycogen metabolism disorder. Our findings are critical for future studies on disease mechanisms and therapies for LD. Interestingly, the neurodegenerative changes observed in this LD model can also be useful for understanding the process of dementia.
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Affiliation(s)
- Jesús Machado-Salas
- Epilepsy Genetics/Genomics Laboratories, Epilepsy Centre of Excellence, Neurology & Research Services, VA Greater Los Angeles Healthcare System, West Los Angeles Medical Center, Los Angeles, CA 90073, USA.
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Guevara J, Jiménez AR, Prieto JC, Seco F. Error estimation for the linearized auto-localization algorithm. Sensors (Basel) 2012; 12:2561-2581. [PMID: 22736965 PMCID: PMC3376620 DOI: 10.3390/s120302561] [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] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Revised: 02/17/2012] [Accepted: 02/20/2012] [Indexed: 06/01/2023]
Abstract
The Linearized Auto-Localization (LAL) algorithm estimates the position of beacon nodes in Local Positioning Systems (LPSs), using only the distance measurements to a mobile node whose position is also unknown. The LAL algorithm calculates the inter-beacon distances, used for the estimation of the beacons' positions, from the linearized trilateration equations. In this paper we propose a method to estimate the propagation of the errors of the inter-beacon distances obtained with the LAL algorithm, based on a first order Taylor approximation of the equations. Since the method depends on such approximation, a confidence parameter τ is defined to measure the reliability of the estimated error. Field evaluations showed that by applying this information to an improved weighted-based auto-localization algorithm (WLAL), the standard deviation of the inter-beacon distances can be improved by more than 30% on average with respect to the original LAL method.
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Affiliation(s)
- Jorge Guevara
- Centro de Automática y Robótica (CAR), Consejo Superior de Investigaciones Científicas (CSIC)-UPM, Madrid, Spain.
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Zomosa-Signoret V, Mayoral M, Limón D, Espinosa B, Calvillo M, Zenteno E, Martínez V, Guevara J. Sialylated and O-glycosidically linked glycans in prion protein deposits in a case of Gerstmann-Sträussler-Scheinker disease. Neuropathology 2011; 31:162-9. [DOI: 10.1111/j.1440-1789.2010.01145.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Limón ID, Ramírez E, Díaz A, Mendieta L, Mayoral MÁ, Espinosa B, Guevara J, Zenteno E. Alteration of the sialylation pattern and memory deficits by injection of Aβ(25-35) into the hippocampus of rats. Neurosci Lett 2011; 495:11-6. [PMID: 21419829 DOI: 10.1016/j.neulet.2011.03.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Revised: 02/28/2011] [Accepted: 03/02/2011] [Indexed: 01/21/2023]
Abstract
Sialic acid in glycoconjugates participates in important cellular functions associated with normal development, growth, and communication. Therefore we evaluated the sialylation pattern and memory deficits caused by the injection of Aβ((25-35)) into the hippocampus (Hp) of rats. The eight-arm maze spatial-learning and memory test indicated that the injection of Aβ((25-35)) into subfield CA1 of the Hp impaired both learning and memory. The sialylation pattern was examined using sialic acid-specific lectins. Our results showed that Maackia amurensis agglutinin (MAA, specific for Neu5Acα2,3Gal) showed reactivity in the CA1 and dentate gyrus (DG) subfields of the Hp mainly in the group injected with vehicle, whereas Macrobrachium rosenbergii lectin (MRL, specific for Neu5,9,7Ac) and Sambucus nigra agglutinin (SNA, specific for Neu5Acα2,6Gal-GalNAc) had increased reactivity in the CA1 and DG subfields of the Hp in the Aβ((25-35))-injected group. The staining pattern of the antibody specific for polysialic acid (a linear homopolymer of α-2,8-linked sialic acid) increased in the CA1 and DG subfields of the Hp of the Aβ((25-35)) group compared to the control group. Our results suggest that injection of Aβ((25-35)) causes impairment in spatial memory and alters the sialylation pattern in response to compensatory reorganization and-or sprouting of dendrites and axons of the surviving neurons.
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Rodríguez-Sosa L, Calderón-Rosete G, Calvillo ME, Guevara J, Flores G. Dopaminergic modulation of the caudal photoreceptor in crayfish. Synapse 2010; 65:497-504. [DOI: 10.1002/syn.20866] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2010] [Accepted: 09/17/2010] [Indexed: 11/12/2022]
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Cuevas E, Limón D, Pérez-Severiano F, Díaz A, Ortega L, Zenteno E, Guevara J. Antioxidant effects of Epicatechin on the hippocampal toxicity caused by Amyloid-beta 25-35 in rats. Eur J Pharmacol 2009; 616:122-7. [DOI: 10.1016/j.ejphar.2009.06.013] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2009] [Revised: 05/26/2009] [Accepted: 06/08/2009] [Indexed: 11/24/2022]
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Mayoral MA, Mayoral C, Meneses A, Villalvazo L, Guzmán A, Espinosa B, Ochoa JL, Zenteno E, Guevara J. Identification of Galectin-3 and Mucin-Type O-Glycans in Breast Cancer and Its Metastasis to Brain. Cancer Invest 2009; 26:615-23. [DOI: 10.1080/07357900701837051] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Rodriguez E, Guevara J, Paez A, Zapata E, Collados MT, Fortoul TI, Lopez-Marure R, Masso F, Montaño LF. The altered expression of inflammation-related molecules and secretion of IL-6 and IL-8 by HUVEC from newborns with maternal inactive systemic lupus erythematosus is modified by estrogens. Lupus 2009; 17:1086-95. [PMID: 19029276 DOI: 10.1177/0961203308093827] [Citation(s) in RCA: 11] [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: 11/15/2022]
Abstract
Systemic lupus erythematosus (SLE) predominantly affects women, especially those in reproductive age. Genetic contributions to disease susceptibility as well as immune dysregulation, particularly persistent inflammatory responses, are considered essential features. Our aim was to determine whether human umbilical vein endothelial cells (HUVEC) isolated from healthy newborns to women with inactive SLE show inflammation-related abnormalities that might lead to an early development of SLE in the offsprings. HUVEC isolated from six women with inactive SLE were stimulated with 2.5 ng/mL of TNF-alpha and/or physiological and pharmacological doses of 17-I(2) estradiol (E2). Then the expression of VCAM-1, ICAM-1, E-selectin, toll-like receptor-9 (TLR-9), heat shock protein 70 (HSP70) and HSP90 were measured. The concentrations of IL-6, IL-8, and IL-10 were also determined in maternal serum and in TNF-alpha stimulated and non-stimulated HUVEC culture supernatant. HUVEC from children with no family history of autoimmune disease served as controls. Our results showed that in HUVEC from SLE+ mothers, a constitutively low expression of adhesion molecules was enhanced by TNF-alpha treatment. The E2 (1 ng/mL) increased the expression of adhesion molecules but had no effect upon TNF-alpha-treated cells. IL-6 was constitutively higher in SLE+ HUVEC, whereas IL-8 was lower; E2 treatment diminished the latter. The E2 had no effect upon IL-6 and IL-8 secretions in TNF-alpha-treated cells. SLE+ HUVEC showed a disordered cytoskeleton and overexpressed HSP70, HSP90, and TLR-9. Our results indicate that endothelial cells of newborns to SLE+ mothers are in a proinflammatory condition which can be upregulated by estrogens.
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Affiliation(s)
- E Rodriguez
- Depto. Biología Celular, Instituto Nacional de Cardiología "Ignacio Chávez", Mexico.
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Limón ID, Mendieta L, Díaz A, Chamorro G, Espinosa B, Zenteno E, Guevara J. Neuroprotective effect of alpha-asarone on spatial memory and nitric oxide levels in rats injected with amyloid-beta((25-35)). Neurosci Lett 2009; 453:98-103. [PMID: 19356601 DOI: 10.1016/j.neulet.2009.02.011] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2008] [Revised: 02/03/2009] [Accepted: 02/04/2009] [Indexed: 11/27/2022]
Abstract
The chemical alpha-asarone is an important active substance of the Acori graminei rhizome (AGR). It has pharmacological effects that include antihyperlipidemic, antiinflammatory, and antioxidant activity. Our aim was to study the effects alpha-asarone on nitric oxide (NO) levels in the hippocampus and temporal cortex of the rat after injection of the fraction 25-35 from amyloid-beta (Abeta((25-35))). In addition we examined the working spatial memory in an eight-arm radial maze. Our results showed a significant increase of nitrites in the hippocampus and temporal cortex of Abeta((25-35))-treated rats. Other evidence of neuronal damage was the expression of a glial-fibrillar-acid protein and a silver staining. There were impairments in the spatial memory evaluated in the eight-arm radial maze. We wanted to determine whether alpha-asarone improves the memory correlated with NO overproduction and neuronal damage caused by the injection of Abeta((25-35)) into rats. Then animals received a 16-day treatment of alpha-asarone before the Abeta((25-35)) injection. Our results show a significant decrease of nitrite levels in the hippocampus and temporal cortex, without astrocytosis and silver-staining cells, which correlates with memory improvement in the alpha-asarone-treated group. Our results suggest that alpha-asarone may protect neurons against Abeta((25-35))-caused neurotoxicity by inhibiting the effects of NO overproduction in the hippocampus and temporal cortex.
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Affiliation(s)
- Ilhuicamina Daniel Limón
- Laboratorio de Neurofarmacología, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
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Limón ID, Díaz A, Mendieta L, Chamorro G, Espinosa B, Zenteno E, Guevara J. Amyloid-beta(25-35) impairs memory and increases NO in the temporal cortex of rats. Neurosci Res 2008; 63:129-37. [PMID: 19084561 DOI: 10.1016/j.neures.2008.11.006] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2008] [Revised: 11/05/2008] [Accepted: 11/10/2008] [Indexed: 01/27/2023]
Abstract
beta-Amyloid plays an important role in the neurodegeneration process of Alzheimer's disease (AD), but its neurotoxic mechanisms are not clear. It has been associated with the increase of oxidative stress and cognitive impairment because the beta-amyloid peptide 25-35 (Abeta((25-35))) has the critical neurotoxic properties of the full-length Abeta(1-42). Our present study shows the role of Abeta((25-35)) when injected into the temporal cortex on the nitric oxide pathways, 3-nitrotyrosine, neuronal death, and the spatial memory of rats 1 month after the injection. Our data showed that Abeta((25-35)) increases oxidative stress, causes neuronal damage, and decreases spatial memory in rats. Notably, the injection of the fraction Abeta((25-35)) caused an increase of nNOS and iNOS immunoreactivity in the temporal cortex and hippocampus. We demonstrated a significant increase of reactive astrocytosis, which was accompanied by neuronal damage in the temporal cortex and hippocampus of rats injected with Abeta((25-35)). These data suggest that the fraction Abeta((25-35)) injected into the temporal cortex might contribute to understanding the role of nitric oxide on the biological changes related to the neuropathological progression and the memory impairment in AD.
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Affiliation(s)
- I Daniel Limón
- Laboratorio de Neurofarmacología, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
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Úrbez-Torres JR, Leavitt GM, Guerrero JC, Guevara J, Gubler WD. Identification and Pathogenicity of Lasiodiplodia theobromae and Diplodia seriata, the Causal Agents of Bot Canker Disease of Grapevines in Mexico. Plant Dis 2008; 92:519-529. [PMID: 30769642 DOI: 10.1094/pdis-92-4-0519] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Perennial cankers and consequent grapevine dieback are a major problem in vineyards of Sonora and Baja California, the most important grape-production areas of Mexico. In order to identify the canker-causing agents, symptomatic arms, cordons, and trunks were collected from 13 and 6 vineyards in Sonora and Baja California, respectively. Two Botryosphaeriaceae spp., Lasiodiplodia theobromae and Diplodia seriata, were isolated frequently from infected wood and identified based on morphological and cultural characters as well as analyses of nucleotide sequences of three genes, the internal transcribed spacer region (ITS1-5.8S-ITS2), a partial sequence of the β-tubulin gene, and part of the translation elongation factor 1-α gene (EF1-α). Although both L. theobromae and D. seriata were isolated from grapevine cankers in Baja California, only L. theobromae was found in vines in the Sonora region. Pathogenicity of both species was verified by inoculation of rooted cuttings and green shoots of Thompson Seedless and Chardonnay cultivars. Isolates of L. theobromae were more virulent, based on the extent of spread in the secondary wood and green tissue, than those of D. seriata. These findings confirm L. theobromae and D. seriata as the causal agents of dieback and canker formation of grapevines in northern Mexico.
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Affiliation(s)
- J R Úrbez-Torres
- Department of Plant Pathology, University of California, Davis 95616
| | - G M Leavitt
- University of California Cooperative Extension, Madera 93637
| | - J C Guerrero
- Departamento de Agricultura, Universidad de Sonora, Hermosillo 83000, Mexico
| | - J Guevara
- Campo Experimental Costa de Ensenada (INIFAP), Baja California 22800, Mexico
| | - W D Gubler
- Department of Plant Pathology, University of California, Davis
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Abstract
Creutzfeldt-Jakob disease (CJD) is classified within the group of transmissible spongiform encephalopathies (TSE). It is a rapidly progressive illness that affects mental functions. The average age of onset is 50 years. Various tests can help orient the clinical diagnosis, but the confirmatory test is still the post mortem analysis. The aim of this study was to describe the epidemiological, clinical and histopathological characteristics of patients diagnosed as suffering from CJD, at the National Institute of Neurology and Neurosurgery of Mexico (NINN). An observational, descriptive and transversal study was conducted. We collected information concerning these cases from the Departments of Epidemiology and Pathology, as well as the clinical charts of the patients with a diagnosis of CJD. Fifteen cases were registered of which three CJD cases were definite, five probable cases were identified, and seven were possible. The average age of the patients was 49 years. Two definite cases were female and one was male. It is important to improve the systems for surveillance of this type of disease and, furthermore, to permit greater accessibility to laboratories where the procedures necessary for supporting diagnosis can be followed.
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Affiliation(s)
- Leora Velásquez-Pérez
- Department of Epidemiology, National Institute of Neurology and Neurosurgery, Mexico DF, Mexico.
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