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Torres-Sánchez ED, Ortiz GG, Reyes-Uribe E, Torres-Jasso JH, Salazar-Flores J. Effect of pesticides on phosphorylation of tau protein, and its influence on Alzheimer's disease. World J Clin Cases 2023; 11:5628-5642. [PMID: 37727721 PMCID: PMC10506003 DOI: 10.12998/wjcc.v11.i24.5628] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/17/2023] [Accepted: 08/08/2023] [Indexed: 08/24/2023] Open
Abstract
Alzheimer's disease (AD) is a progressive and neurodegenerative illness which results in alterations in cognitive development. It is characterized by loss/dysfunction of cholinergic neurons, and formation of amyloid plaques, and formation of neurofibrillary tangles, among other changes, due to hyperphosphorylation of tau-protein. Exposure to pesticides in humans occurs frequently due to contact with contaminated food, water, or particles. Organochlorines, organophosphates, carbamates, pyrethroids and neonicotinoids are associated with the most diagnosed incidents of severe cognitive impairment. The aim of this study was to determine the effects of these pesticides on the phosphorylation of tau protein, and its cognitive implications in the development of AD. It was found that exposure to pesticides increased the phosphorylation of tau protein at sites Ser198, Ser199, Ser202, Thr205, Ser396 and Ser404. Contact with these chemicals altered the enzymatic activities of cyclin-dependent kinase 5 and glycogen synthase kinase 3 beta, and protein phosphatase-2A. Moreover, it altered the expression of the microtubule associated protein tau gene, and changed levels of intracellular calcium. These changes affected tau protein phosphorylation and neuroinflammation, and also increased oxidative stress. In addition, the exposed subjects had poor level of performance in tests that involved evaluation of novelty, as test on verbal, non-verbal, spatial memory, attention, and problem-solving skills.
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Affiliation(s)
- Erandis D Torres-Sánchez
- Department of Medical and Life Sciences, University Center of la Cienega, University of Guadalajara, Ocotlan 47820, Jalisco, Mexico
| | - Genaro G Ortiz
- Department of Philosophical and Methodological Disciplines and Service of Molecular Biology in Medicine Hospital Civil, University of Guadalajara, Guadalajara 44340, Jalisco, Mexico
| | - Emmanuel Reyes-Uribe
- Department of Medical and Life Sciences, University Center of la Cienega, University of Guadalajara, Ocotlan 47820, Jalisco, Mexico
| | - Juan H Torres-Jasso
- Department of Biological Sciences, CUCOSTA, University of Guadalajara, Puerto Vallarta 48280, Jalisco, Mexico
| | - Joel Salazar-Flores
- Department of Medical and Life Sciences, University Center of la Cienega, University of Guadalajara, Ocotlan 47820, Jalisco, Mexico
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Salazar-Flores J, Lomelí-Martínez SM, Ceja-Gálvez HR, Torres-Jasso JH, Torres-Reyes LA, Torres-Sánchez ED. Impacts of Pesticides on Oral Cavity Health and Ecosystems: A Review. Int J Environ Res Public Health 2022; 19:11257. [PMID: 36141526 PMCID: PMC9517265 DOI: 10.3390/ijerph191811257] [Citation(s) in RCA: 3] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/01/2022] [Accepted: 09/03/2022] [Indexed: 06/16/2023]
Abstract
Pesticides are chemical substances used to control, prevent, or destroy agricultural, domestic, and livestock pests. These compounds produce adverse changes in health, and they have been associated with the development of multiple chronic diseases. This study aimed to present a detailed review of the effect of pesticides on the oral cavity and the oral microbiome. In the oral cavity, pesticides alter and/or modify tissues and the microbiome, thereby triggering imbalance in the ecosystem, generating an inflammatory response, and activating hydrolytic enzymes. In particular, the imbalance in the oral microbiome creates a dysbiosis that modifies the number, composition, and/or functions of the constituent microorganisms and the local response of the host. Pesticide exposure alters epithelial cells, and oral microbiota, and disrupts the homeostasis of the oral environment. The presence of pesticides in the oral cavity predisposes the appearance of pathologies such as caries, periodontal diseases, oral cancer, and odontogenic infections. In this study, we analyzed the effect of organochlorines, organophosphates, pyrethroids, carbamates, bipyridyls, and triazineson oral cavity health and ecosystems.
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Affiliation(s)
- Joel Salazar-Flores
- Department of Medical and Life Sciences, University Center of La Cienega (CUCIENEGA), University of Guadalajara, Ocotlan 47810, Jalisco, Mexico
| | - Sarah M. Lomelí-Martínez
- Department of Medical and Life Sciences, University Center of La Cienega (CUCIENEGA), University of Guadalajara, Ocotlan 47810, Jalisco, Mexico
- Department of Integral Dental Clinics, University Center of Health Sciences (CUCS), University of Guadalajara, Guadalajara 44340, Jalisco, Mexico
| | - Hazael R. Ceja-Gálvez
- Institute of Research in Biomedical Sciences, University Center of Health Sciences (CUCS), University of Guadalajara, Guadalajara 44340, Jalisco, Mexico
| | - Juan H. Torres-Jasso
- Department of Biological Sciences, University Center of La Costa (CUCOSTA), University of Guadalajara, Puerto Vallarta 48280, Jalisco, Mexico
| | - Luis A. Torres-Reyes
- Department of Molecular Biology and Genomics, University Center of Health Sciences (CUCS), University of Guadalajara, Guadalajara 44340, Jalisco, Mexico
| | - Erandis D. Torres-Sánchez
- Department of Medical and Life Sciences, University Center of La Cienega (CUCIENEGA), University of Guadalajara, Ocotlan 47810, Jalisco, Mexico
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Rocha-Alcaraz MF, Torres-Sánchez ED, Torres-Jasso JH, Yáñez-González AY, Reyna-Villela MZ, Rojas-Bravo D, Salazar-Flores J. In vitro dissolution characteristics of patent, generic and similar brands of naproxen in various dissolution media. TROP J PHARM RES 2021. [DOI: 10.4314/tjpr.v18i6.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Purpose: To investigate the dissolution properties of various brands of naproxen in four dissolution media in order to forecast their biological availability.
Methods: Dissolution tests were carried out in a dissolution tester with 48 tablets of different naproxen brands in 900 mL of 0.1 M phosphate buffer, pH 7.4. Subsequently, the medium was modified with 600 mL of buffer plus 300 mL of cola drink, grapefruit or milk. Each sample was taken and brought to a concentration approximating that of a reference solution. Absorbance at 332 nm was determined and the dissolution, Q, was calculated (Q values ≥ 80.0 ± 5 % were acceptable).
Results: Dissolution in buffer was > 85 %. In cola drink, it was < 80 %, while in grapefruit juice, it was in the range of 7 - 68 %. Using 2-way ANOVA, these media and the three naproxen brands showed significant differences (F = 68.90, p = 0.0000; F = 23.18, p = 0.0000). With Fisher's LSD test, two of these media contributed consistently to dissolution, and the three drug brands showed statistically different dissolution profiles (p ≤ 0.05).
Conclusion: Caution must be exercised cola drink, grapefruit juice and milk are used to administered naproxen as the biological availability of the drug may be altered.
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Salazar-Flores J, Pacheco-Moisés FP, Ortiz GG, Torres-Jasso JH, Romero-Rentería O, Briones-Torres AL, Torres-Sánchez ED. Occupational exposure to organophosphorus and carbamates in farmers in La Cienega, Jalisco, Mexico: oxidative stress and membrane fluidity markers. J Occup Med Toxicol 2020; 15:32. [PMID: 33133223 PMCID: PMC7594453 DOI: 10.1186/s12995-020-00283-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 10/18/2020] [Indexed: 01/22/2023] Open
Abstract
Background The region of La Cienega in Jalisco Mexico, is an important agricultural reference for the production of corn, sorghum and wheat, among other grains, so the use of pesticides for pest control is high. However, in this rural area there are no toxicological studies that assess the occupational risk of pesticide use. Therefore, this study is the first to determine the oxidative stress levels markers (GSH, GSSG, carbonyl groups, nitric oxide metabolites and lipid peroxides) as well as alteration of the mitochondrial membrane fluidity caused by occupational exposure to organophosphorus and carbamates in farmers of this region. This occupational risk can increase cellular oxidation, which explains the high prevalence of neurodegenerative diseases and cancer in Cienega settlers to be analyzed in future studies. Methods Comparative cross-sectional study was performed using two groups: one not exposed group (n = 93) and another one with occupational exposure (n = 113). The latter group was sub-divided into 4 groups based on duration of use/exposure to pesticides. Oxidative stress levels and membrane fluidity were assessed using spectrophotometric methods. Statistical analyses were performed using SPSS software ver. 19.0 for windows. Results The most commonly used pesticides were organophosphorus, carbamates, herbicide-type glyphosate and paraquat, with an average occupational exposure time of 35.3 years. There were statistically significant differences in markers of oxidative stress between exposed farmers and not exposed group (p = 0.000). However, in most cases, no significant differences were found in markers of oxidative stress among the 4 exposure sub-groups (p > 0.05). Conclusion In the Cienega region, despite the indiscriminate use of organophosphorus and carbamates, there are no previous studies of levels oxidative stress. The results show increased levels of oxidative stress in occupationally exposed farmers, particularly membrane fluidity levels increased three times in contrast to not exposed group.
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Affiliation(s)
- Joel Salazar-Flores
- Department of Medical Sciences and Life, CUCIENEGA, University of Guadalajara, Ocotlan, Jalisco Mexico
| | | | - Genaro G Ortiz
- Department of Philosophical and Methodological Discipline, CUCS, University of Guadalajara, Guadalajara, Jalisco Mexico
| | - Juan H Torres-Jasso
- Department of Biological Sciences, CUCOSTA, University of Guadalajara, Puerto Vallarta, Jalisco Mexico
| | - Odette Romero-Rentería
- Department of Medical Sciences and Life, CUCIENEGA, University of Guadalajara, Ocotlan, Jalisco Mexico
| | - Ana L Briones-Torres
- Department of Chemistry, CUCEI, University of Guadalajara, Guadalajara, Jalisco Mexico
| | - Erandis D Torres-Sánchez
- Department of Medical Sciences and Life, CUCIENEGA, University of Guadalajara, Ocotlan, Jalisco Mexico
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Torres-Jasso JH, Bustos-Carpinteyro AR, Garcia-Gonzalez JR, Peregrina-Sandoval J, Cruz-Ramos JA, Santiago-Luna E, Sanchez-Lopez JY. Epidermal growth factor receptor expression in gastric tumors and its relationship with the germline polymorphisms - 216 G>T, -191 C>A, (CA) n IVS1, and R521K. Indian J Cancer 2017; 53:345-348. [PMID: 28244453 DOI: 10.4103/0019-509x.200648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Gastric cancer (GC) is the third worldwide leading cause of cancer-related death affecting both sexes. The aberrant expression of epidermal growth factor receptor (EGFR) gene has been detected in many human epithelial malignancies and linked to advanced disease, more aggressive phenotype, and poor prognosis. AIMS To analyze the relation that the expression of EGFR in gastric tumors holds with pathological characteristics and with the germline polymorphisms -216 G>T, -191 C>A, (CA) n IVS1, and R521K. MATERIALS AND METHODS We studied 22 biopsies from gastric tumors obtained by endoscopy. EGFR expression was determined by relative quantification real-time polymerase chain reaction with the glyceraldehyde-3-phosphate dehydrogenase reference gene (as for messenger RNA [mRNA]) and by immunohistochemistry (IHC) (as for protein). EGFR germline polymorphisms were analyzed by sequencing, GeneScan, and restriction fragment length polymorphisms. RESULTS EGFR mRNA expression was increased (>2-fold) in 13.6% of GC cases, decreased (<0.5-fold) in 68.2%, and normal in 18.2%; overexpression was related to well-differentiated gastric tumors, whereas underexpression was linked to moderate or poorly differentiated gastric tumors (P < 0.001). EGFR protein expression was high (IHC 2+ and 3+) in 29.4% of gastric tumors and was normal or low (score 0 to 1+) in 70.6% cases. EGFR expression, in both mRNA and protein, was not related to any EGFR polymorphism (P > 0.05). CONCLUSIONS Most gastric tumors showed low EGFR expression (mRNA and protein), whereas EGFR overexpression was related to well-differentiated gastric tumors. Furthermore, germinal polymorphisms -216, -191, (CA) n IVS1, and R521K were not related to EGFR expression (mRNA or protein).
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Affiliation(s)
- J H Torres-Jasso
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social; Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Nextipac, Jalisco, ; Departamento de Ciencias Biológicas, División de Ciencias Biológicas y de la Salud, Centro Universitario de la Costa, Universidad de Guadalajara, Delegación Ixtapa, Puerto Vallarta, México
| | - A R Bustos-Carpinteyro
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social; Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Nextipac, Jalisco, México
| | - J R Garcia-Gonzalez
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, México
| | - J Peregrina-Sandoval
- Departamento de Biología Celular y Molecular, Laboratorio de Inmunobiología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Nextipac, Jalisco, México
| | - J A Cruz-Ramos
- Departamento de Enseñanza y Capacitación, Instituto Jalisciense de Cancerología, Guadalajara, México
| | - E Santiago-Luna
- Departamento de Gastroenterología, Servicio de Endoscopías, Hospital de Especialidades del Centro Médico Nacional de Occidente, Instituto Mexicano del Seguro Social, México
| | - J Y Sanchez-Lopez
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, México
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Torres-Jasso JH, Marín ME, Santiago-Luna E, Leoner JC, Torres J, Magaña-Torres MT, Perea FJ, Ibarra B, Sánchez-López JY. EGFR gene polymorphisms -216G>T and -191C>A are risk markers for gastric cancer in Mexican population. Genet Mol Res 2015; 14:1802-7. [PMID: 25867325 DOI: 10.4238/2015.march.13.8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Epidermal growth factor receptor (EGFR) is a transmembrane glycoprotein with tyrosine-kinase activity that plays an important role in multiple cellular functions. EGFR overexpression has been observed in several types of tumors and it is significantly associated with disease stage, survival, prognosis, and progression of cancer. The polymorphisms -216G>T, -191C>A, and (CA)n first intervening sequence (IVS1) have been related to EGFR overexpression and have been studied in several types of cancer, but not in gastric cancer (GC). The aim of this study was to determine the association of these 3 polymorphisms and GC. Genomic DNA from 68 GC patients and 102 healthy blood donors were analyzed. Polymorphisms were identified by DNA-sequencing (-216G>T and -191C>A) and GeneScan (CA)n IVS1. The results showed that the distribution of the -216G>T and -191C>A genotypes differed between groups (P < 0.05). The odds ratio for the -216TT genotype was 4.59 (95% confidence interval = 1.55-13.54, P < 0.05) and 10.71 (95% confidence interval = 2.31-49.59, P < 0.05) for the -191AA genotype, both in a recessive model. The genotype and allele distributions of the (CA)n IVS1 repeat was similar in both groups. In conclusion, the -216TT and -191AA genotypes and GA haplotype of the EGFR gene were found to be associated with an increased risk of gastric cancer in a Mexican population.
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Affiliation(s)
- J H Torres-Jasso
- División de Genética, Centro de Investigación Biomédica de Occidente, IMSS, Guadalajara, Jalisco, México
| | - M E Marín
- Servicio de Endoscopías, Unidad Médica de Atención Ambulatoria No. 52, IMSS, Guadalajara, Jalisco, México
| | - E Santiago-Luna
- Servicio de Endoscopías, Hospital de Especialidades, Centro Médico Nacional de Occidente, IMSS, Guadalajara, Jalisco, México
| | - J C Leoner
- Servicio de Oncología, Hospital de Especialidades, Centro Médico Nacional de Occidente, IMSS, Guadalajara, Jalisco, México
| | - J Torres
- Unidad de Investigación Médica de Enfermedades Infecciosas y Parasitarias, Hospital de Pediatría, Centro Médico Nacional Siglo XXI, IMSS, México
| | - M T Magaña-Torres
- División de Genética, Centro de Investigación Biomédica de Occidente, IMSS, Guadalajara, Jalisco, México
| | - F J Perea
- División de Genética, Centro de Investigación Biomédica de Occidente, IMSS, Guadalajara, Jalisco, México
| | - B Ibarra
- División de Genética, Centro de Investigación Biomédica de Occidente, IMSS, Guadalajara, Jalisco, México
| | - J Y Sánchez-López
- División de Genética, Centro de Investigación Biomédica de Occidente, IMSS, Guadalajara, Jalisco, México
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