1
|
Martinez-Salas ADJ, Garcia-Rivera OU, Reyna-Blanco I, Jimenez-Garcia AD, Rosas-Hernandez H. Adequate Mentorship Program for Holmium Laser Enucleation of the Prostate (HoLEP) Leads to Satisfactory Short-Term Outcomes in the Early Learning Curve of Young Urologists: First-Year Outcomes of a Newly Established Mentorship Training in Mexico. Cureus 2023; 15:e41756. [PMID: 37575804 PMCID: PMC10416137 DOI: 10.7759/cureus.41756] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/11/2023] [Indexed: 08/15/2023] Open
Abstract
Introduction Benign prostatic hyperplasia (BPH) is one of the most common causes of lower urinary tract symptoms in men. Holmium Laser Enucleation of the Prostate (HoLEP) has been recommended by international guidelines as an alternative to transurethral resection of the prostate (TURP). HoLEP's learning curve and the lack of adequate mentorship remains an obstacle for the worldwide adoption of this technique. Objective To report the first-year learning curve of a newly established mentorship program in young urologists without any previous HoLEP experience. Methods We report a cohort of patients with BPH, with prostate size ≥70 grams, treated with HoLEP, analyzed for perioperative data and complications, and short-term postoperative complications and functional outcomes, at three and six months after surgery. Results A total of 47 patients were managed with HoLEP. Mean total operative time was 149.8 ± 42.9 minutes. We experienced five (10.6%) intraoperative complications, including one intravesical resection of the prostate with bipolar energy, three conversions to TURP and one conversion to open prostatectomy. We experienced four postoperative complications, all of them Clavien-Dindo ≤2. Median International Prostate Symptom Score (IPSS) decrease at six months was -17 points from baseline. Mean post-void residual volume and prostate-specific antigen significantly decreased by the third postoperative month. Multiple linear regression showed that prostate size is directly related to increased surgical time during the early learning curve. Discussion Our experience adequately reflects the importance of HoLEP mentorship in young urologists seeking training in this technique. Both surgeons had perioperative and postoperative outcomes deemed satisfactory based on previously published learning curves. Conclusions HoLEP is a technically difficult procedure, however, adequate mentorship leads to satisfying short-term outcomes since the early stages of the learning curve in young urologists with no previous training on this technique.
Collapse
Affiliation(s)
| | - Oscar Uriel Garcia-Rivera
- Urology, Centro Medico Nacional 20 de Noviembre Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado (ISSSTE), Mexico City, MEX
| | - Irving Reyna-Blanco
- Urology, Hospital General Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado (ISSSTE) Tlahuac "Dra. Matilde Petra Montoya Lafragua", Mexico City, MEX
| | - Aldo Daniel Jimenez-Garcia
- Urology, Hospital General Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado (ISSSTE) Tlahuac "Dra. Matilde Petra Montoya Lafragua", Mexico City, MEX
| | | |
Collapse
|
2
|
Flanigan TJ, Ferguson SA, Law CD, Rosas-Hernandez H, Cuevas-Martinez E, Fitzpatrick S, Shen AN. Neurobehavioral and neurochemical effects of perinatal arsenite exposure in Sprague-Dawley rats. Neurotoxicol Teratol 2021; 90:107059. [PMID: 34979254 DOI: 10.1016/j.ntt.2021.107059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 12/13/2021] [Accepted: 12/15/2021] [Indexed: 11/19/2022]
Abstract
Exposure to relatively high levels of inorganic arsenic (iAs) is associated with detrimental effects on human health, including cancer and diabetes. The effects of lower-level exposures are less clear, and gaps in the literature exist as to the effects of iAs exposure on neurodevelopment. The current study assessed the effects of perinatal iAs exposure on rodent neurodevelopment and behavior. Pregnant Sprague-Dawley (SD) rats were exposed to arsenite (AsIII) via oral gavage on gestational days (GD) 6 through 21, and pups were directly dosed via gavage on postnatal days (PND) 1 through 21. Dams and offspring received the same doses: 0.00, 0.10, 1.50, or 3.75 mg/kg/day. Male and female offspring underwent a battery of behavioral assessments from weaning until PND 180. Brain arsenic levels increased in a dose-dependent manner at both PND 1 and 21. Results from the behavioral tests show that pre- and postnatal AsIII exposure did not adversely affect offspring weight gain, adolescent motor and cognitive functions, or adult motor and cognitive functions in the SD rat. There were no differences in concentration of several brain proteins associated with blood-brain barrier permeability, dopamine functions, and inflammation.
Collapse
Affiliation(s)
- Timothy J Flanigan
- Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR 72079, United States of America
| | - Sherry A Ferguson
- Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR 72079, United States of America
| | - Charles D Law
- Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR 72079, United States of America
| | - Hector Rosas-Hernandez
- Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR 72079, United States of America
| | - Elvis Cuevas-Martinez
- Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR 72079, United States of America
| | - Suzanne Fitzpatrick
- Office of the Center Director, Center for Food Safety and Applied Nutrition/FDA, , United States of America
| | - Andrew N Shen
- Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR 72079, United States of America.
| |
Collapse
|
3
|
Sarkar S, Raymick J, Cuevas E, Rosas-Hernandez H, Hanig J. Modification of methods to use Congo-red stain to simultaneously visualize amyloid plaques and tangles in human and rodent brain tissue sections. Metab Brain Dis 2020; 35:1371-1383. [PMID: 32852699 DOI: 10.1007/s11011-020-00608-0] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 08/11/2020] [Indexed: 10/23/2022]
Abstract
Although there are multiple histochemical tracers available to label plaques and tangles in the brain to evaluate neuropathology in Alzheimer disease (AD), few of them are versatile in nature and compatible with immunohistochemical procedures. Congo Red (CR) is an anisotropic organic stain discovered to label amyloid beta (Aβ) plaques in the brain. Unfortunately, its use is underappreciated due to its low resolution and brightness as stated in previous studies using bright field microscopy. Here, we modified a previous method to localize both plaques and tangles in brains from humans and a transgenic rodent model of AD for fluorescence microscopic visualization. The plaque staining affinities displayed by CR were compared with fibrillar pattern labeling seen with Thioflavin S. This study summarizes the optimization of protocols in which various parameters have been finetuned. To determine the target CR potentially binds, we have performed double labeling with different antibodies against Aβ as well as phosphorylated Tau. The plaque staining affinities exhibited by CR are compared with those associated with the diffuse pattern of labeling seen with antibodies directed against different epitopes of Aβ. Neither CP13, TNT2 or TOC1 binds all the neurofibrillary tangles as revealed by CR labeling in the human brain. Additionally, we also evaluated double labeling with AT8, AT180, and PHF1. Interestingly, PHF-1 shows 40% colocalization and AT8 shows 15% colocalization with NFT. Thus, CR is a much better marker to detect AD pathologies in human and rodent brains with higher fluorescence intensity relative to other conventional fluorescence markers.
Collapse
Affiliation(s)
- Sumit Sarkar
- Division of Neurotoxicology, National Center for Toxicological Research/US FDA, HFT-132, Jefferson, AR, 72079, USA.
| | - James Raymick
- Division of Neurotoxicology, National Center for Toxicological Research/US FDA, HFT-132, Jefferson, AR, 72079, USA
| | - Elvis Cuevas
- Division of Neurotoxicology, National Center for Toxicological Research/US FDA, HFT-132, Jefferson, AR, 72079, USA
| | - Hector Rosas-Hernandez
- Division of Neurotoxicology, National Center for Toxicological Research/US FDA, HFT-132, Jefferson, AR, 72079, USA
| | - Joseph Hanig
- Office of Testing & Research, Center for Drug Evaluation Research/FDA, Silver Spring, MD, USA
| |
Collapse
|
4
|
Rosas-Hernandez H, Cuevas E, Raymick JB, Robinson BL, Sarkar S. Impaired Amyloid Beta Clearance and Brain Microvascular Dysfunction are Present in the Tg-SwDI Mouse Model of Alzheimer's Disease. Neuroscience 2020; 440:48-55. [PMID: 32450297 DOI: 10.1016/j.neuroscience.2020.05.024] [Citation(s) in RCA: 8] [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: 03/21/2020] [Revised: 05/14/2020] [Accepted: 05/15/2020] [Indexed: 12/22/2022]
Abstract
Alzheimer's disease (AD) pathology is characterized by amyloid plaques containing amyloid beta (Aβ) peptides, neurofibrillary tangles containing hyperphosphorylated tau protein, and neuronal loss. In addition, Aβ deposition in brain microvessels, known as cerebral amyloid angiopathy (CAA), increases blood-brain barrier (BBB) permeability and induces vascular dysfunction which aggravates AD pathology. The aim of the present study was to characterize neurovascular dysfunction in the Tg-SwDI mouse model of AD. Isolated brain capillaries from wild type (WT) and Tg-SwDI mice were used to evaluate the expression of monomeric and aggregated forms of Aβ, P-glycoprotein (P-gp), the receptor for advance glycation end-products (RAGE) and the tight junction (TJs) proteins occludin and claudin-5. Cultured brain endothelial cells were used to analyze barrier function via fluorescein flux. Isolated capillaries from Tg-SwDI mice contained increased levels of aggregated and oligomeric Aβ compared to WT animals. Isolated capillaries from Tg-SwDI had decreased levels of P-gp, which transports Aβ from brain to blood, and increased levels of RAGE, which transports Aβ from blood to brain. In addition, the TJ protein occludin was decreased in Tg-SwDI mice relative to WT mice, which correlated with an increase in BBB permeability in cultured brain endothelial cells. These findings demonstrated that Tg-SwDI mice exhibit Aβ aggregation that is due, in part, to impaired Aβ clearance driven by both a decrease in P-gp and increase in RAGE protein levels in brain capillaries. Aβ aggregation promotes a decrease in the expression of the TJ protein occludin, and as consequence an increase in BBB permeability.
Collapse
Affiliation(s)
- Hector Rosas-Hernandez
- Division of Neurotoxicology, National Center for Toxicological Research/US FDA, United States
| | - Elvis Cuevas
- Division of Neurotoxicology, National Center for Toxicological Research/US FDA, United States
| | - James B Raymick
- Division of Neurotoxicology, National Center for Toxicological Research/US FDA, United States
| | - Bonnie L Robinson
- Division of Neurotoxicology, National Center for Toxicological Research/US FDA, United States
| | - Sumit Sarkar
- Division of Neurotoxicology, National Center for Toxicological Research/US FDA, United States.
| |
Collapse
|
5
|
Inselman A, Liu F, Wang C, Shi Q, Pang L, Mattes W, White M, Lyn-Cook B, Rosas-Hernandez H, Cuevas E, Lantz S, Imam S, Ali S, Petibone DM, Shemansky JM, Xiong R, Wang Y, Tripathi P, Cao X, Heflich RH, Slikker W. Dr. Daniel Acosta and In Vitro toxicology at the U.S. Food and Drug Administration's National Center for Toxicological Research. Toxicol In Vitro 2019; 64:104471. [PMID: 31628011 DOI: 10.1016/j.tiv.2019.03.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 03/01/2019] [Accepted: 03/04/2019] [Indexed: 10/25/2022]
Abstract
For the past five years, Dr. Daniel Acosta has served as the Deputy Director of Research at the National Center for Toxicological Research (NCTR), a principle research laboratory of the U.S. Food and Drug Administration (FDA). Over his career at NCTR, Dr. Acosta has had a major impact on developing and promoting the use of in vitro assays in regulatory toxicity and product safety assessments. As Dr. Acosta nears his retirement we have dedicated this paper to his many accomplishments at the NCTR. Described within this paper are some of the in vitro studies that have been conducted under Dr. Acosta's leadership. These studies include toxicological assessments involving developmental effects, and the development and application of in vitro reproductive, heart, liver, neurological and airway cell and tissue models.
Collapse
Affiliation(s)
- Amy Inselman
- Division of Systems Biology, NCTR, FDA, Jefferson, AR 72079, USA
| | - Fang Liu
- Division of Neurotoxicology, NCTR, FDA, Jefferson, AR 72079, USA
| | - Cheng Wang
- Division of Neurotoxicology, NCTR, FDA, Jefferson, AR 72079, USA
| | - Qiang Shi
- Division of Systems Biology, NCTR, FDA, Jefferson, AR 72079, USA
| | - Li Pang
- Division of Systems Biology, NCTR, FDA, Jefferson, AR 72079, USA
| | - William Mattes
- Division of Systems Biology, NCTR, FDA, Jefferson, AR 72079, USA
| | - Matthew White
- Arkansas College of Osteopathic Medicine, Fort Smith, AR 72916, USA
| | - Beverly Lyn-Cook
- Division of Biochemical Toxicology, NCTR, FDA, Jefferson, AR 72079, USA
| | | | - Elvis Cuevas
- Division of Neurotoxicology, NCTR, FDA, Jefferson, AR 72079, USA
| | - Susan Lantz
- Division of Neurotoxicology, NCTR, FDA, Jefferson, AR 72079, USA
| | - Syed Imam
- Division of Neurotoxicology, NCTR, FDA, Jefferson, AR 72079, USA
| | - Syed Ali
- Division of Neurotoxicology, NCTR, FDA, Jefferson, AR 72079, USA
| | - Dayton M Petibone
- Division of Genetic and Molecular Toxicology, NCTR, FDA, Jefferson, AR 72079, USA
| | - Jennifer M Shemansky
- Division of Genetic and Molecular Toxicology, NCTR, FDA, Jefferson, AR 72079, USA
| | - Rui Xiong
- Division of Genetic and Molecular Toxicology, NCTR, FDA, Jefferson, AR 72079, USA
| | - Yiying Wang
- Division of Genetic and Molecular Toxicology, NCTR, FDA, Jefferson, AR 72079, USA
| | - Priya Tripathi
- Division of Genetic and Molecular Toxicology, NCTR, FDA, Jefferson, AR 72079, USA
| | - Xuefei Cao
- Division of Genetic and Molecular Toxicology, NCTR, FDA, Jefferson, AR 72079, USA
| | - Robert H Heflich
- Division of Genetic and Molecular Toxicology, NCTR, FDA, Jefferson, AR 72079, USA
| | | |
Collapse
|
6
|
Cuevas E, Rosas-Hernandez H, Burks SM, Ramirez-Lee MA, Guzman A, Imam SZ, Ali SF, Sarkar S. Amyloid Beta 25-35 induces blood-brain barrier disruption in vitro. Metab Brain Dis 2019; 34:1365-1374. [PMID: 31267346 DOI: 10.1007/s11011-019-00447-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [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: 09/13/2018] [Accepted: 06/05/2019] [Indexed: 11/27/2022]
Abstract
The amyloid β-peptide (Aβ) is transported across the blood-brain barrier (BBB) by binding with the receptor for advanced glycation end products (RAGE). Previously, we demonstrated that the Aβ fraction 25-35 (Aβ25-35) increases RAGE expression in the rat hippocampus, likely contributing to its neurotoxic effects. However, it is still debated if the interaction of Aβ with RAGE compromises the BBB function in Alzheimer' disease (AD). Here, we evaluated the effects of Aβ25-35 in an established in vitro model of the BBB. Rat brain microvascular endothelial cells (rBMVECs) were treated with 20 μM active Aβ25-35 or the inactive Aβ35-25 (control), for 24 h. Exposure to Aβ25-35 significantly decreased cell viability, increased cellular necrosis, and increased the production of reactive oxygen species (ROS), which triggered a decrease in the enzyme glutathione peroxidase when compared to the control condition. Aβ25-35 also increased BBB permeability by altering the expression of tight junction proteins (decreasing zonula occludens-1 and increasing occludin). Aβ25-35 induced monolayer disruption and cellular disarrangement of the BBB, with RAGE being highly expressed in the zones of disarrangement. Together, these data suggest that Aβ25-35-induces toxicity by compromising the functionality and integrity of the BBB in vitro. Graphical abstract Aβ25-35 induces BBB dysfunction in vitro, wich is likely mediated by OS and ultimately leads to disruption of BBB integrity and cell death.
Collapse
Affiliation(s)
- Elvis Cuevas
- Division of Neurotoxicology, National Center for Toxicological Research/U.S. Food and Drug Administration, Jefferson, AR, 72079, USA.
| | - Hector Rosas-Hernandez
- Division of Neurotoxicology, National Center for Toxicological Research/U.S. Food and Drug Administration, Jefferson, AR, 72079, USA
| | - Susan M Burks
- Division of Neurotoxicology, National Center for Toxicological Research/U.S. Food and Drug Administration, Jefferson, AR, 72079, USA
| | - Manuel A Ramirez-Lee
- Division of Neurotoxicology, National Center for Toxicological Research/U.S. Food and Drug Administration, Jefferson, AR, 72079, USA
| | - Aida Guzman
- Escuela Nacional Preparatoria-UNAM, Mexico, Mexico
| | - Syed Z Imam
- Division of Neurotoxicology, National Center for Toxicological Research/U.S. Food and Drug Administration, Jefferson, AR, 72079, USA
| | - Syed F Ali
- Division of Neurotoxicology, National Center for Toxicological Research/U.S. Food and Drug Administration, Jefferson, AR, 72079, USA
| | - Sumit Sarkar
- Division of Neurotoxicology, National Center for Toxicological Research/U.S. Food and Drug Administration, Jefferson, AR, 72079, USA
| |
Collapse
|
7
|
Rosas-Hernandez H, Burks SM, Cuevas E, Ali SF. Stretch-Induced Deformation as a Model to Study Dopaminergic Dysfunction in Traumatic Brain Injury. Neurochem Res 2019; 44:2546-2555. [DOI: 10.1007/s11064-019-02872-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 09/04/2019] [Accepted: 09/09/2019] [Indexed: 01/08/2023]
|
8
|
Rosas-Hernandez H, Cuevas E, Raymick JB, Robinson BL, Ali SF, Hanig J, Sarkar S. Characterization of Serum Exosomes from a Transgenic Mouse Model of Alzheimer’s Disease. Curr Alzheimer Res 2019; 16:388-395. [DOI: 10.2174/1567205016666190321155422] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 03/11/2019] [Accepted: 03/17/2019] [Indexed: 11/22/2022]
Abstract
Background:
Alzheimer’s Disease (AD) is the most common type of dementia characterized
by amyloid plaques containing Amyloid Beta (Aβ) peptides and neurofibrillary tangles containing tau
protein. In addition to neuronal loss, Cerebral Amyloid Angiopathy (CAA) commonly occurs in AD.
CAA is characterized by Aβ deposition in brain microvessels. Recent studies have suggested that
exosomes (cell-derived vesicles containing a diverse cargo) may be involved in the pathogenesis of AD.
Objective:
Isolate and characterize brain-derived exosomes from a transgenic mouse model of AD that
presents CAA.
Methods:
Exosomes were isolated from serum obtained from 13-month-old wild type and AD transgenic
female mice using an exosome precipitation solution. Characterization of exosomal proteins was
performed by western blots and dot blots.
Results:
Serum exosomes were increased in transgenic mice compared to wild types as determined by
increased levels of the exosome markers flotillin and alix. High levels of neuronal markers were found
in exosomes, without any difference any between the 2 groups. Markers for endothelial-derived
exosomes were decreased in the transgenic model, while astrocytic-derived exosomes were increased.
Exosome characterization showed increased levels of oligomeric Aβ and oligomeric and monomeric
forms tau on the transgenic animals. Levels of amyloid precursor protein were also increased. In addition,
pathological and phosphorylated forms of tau were detected, but no difference was observed between
the groups.
Conclusion:
These data suggest that monomeric and oligomeric forms of Aβ and tau are secreted into
serum via brain exosomes, most likely derived from astrocytes in the transgenic mouse model of AD
with CAA. Studies on the implication of this event in the propagation of AD are underway.
Collapse
Affiliation(s)
- Hector Rosas-Hernandez
- Division of Neurotoxicology National Center for Toxicological Research, 3900 NCTR Road, Jefferson, AR. 72079, United States
| | - Elvis Cuevas
- Division of Neurotoxicology National Center for Toxicological Research, 3900 NCTR Road, Jefferson, AR. 72079, United States
| | - James B. Raymick
- Division of Neurotoxicology National Center for Toxicological Research, 3900 NCTR Road, Jefferson, AR. 72079, United States
| | - Bonnie L. Robinson
- Division of Neurotoxicology National Center for Toxicological Research, 3900 NCTR Road, Jefferson, AR. 72079, United States
| | - Syed F. Ali
- Division of Neurotoxicology National Center for Toxicological Research, 3900 NCTR Road, Jefferson, AR. 72079, United States
| | - Joseph Hanig
- Office of Testing & Research, CDER/FDA, White Oak, MD-20993, United States
| | - Sumit Sarkar
- Division of Neurotoxicology National Center for Toxicological Research, 3900 NCTR Road, Jefferson, AR. 72079, United States
| |
Collapse
|
9
|
Rosas-Hernandez H, Chigurupati S, Raymick J, Robinson B, Cuevas E, Hanig J, Sarkar S. Identification of altered microRNAs in serum of a mouse model of Parkinson's disease. Neurosci Lett 2018; 687:1-9. [PMID: 30025832 DOI: 10.1016/j.neulet.2018.07.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 07/13/2018] [Accepted: 07/15/2018] [Indexed: 12/23/2022]
Abstract
Parkinson's disease (PD) is the second most prevalent neurodegenerative disease, whose hallmark is the loss of dopamine terminals in the substantia nigra pars compacta (SNpc). PD is usually diagnosed after the appearance of motor symptoms, when about 70% of neurons in the SNpc have already been lost. Because of that, it is important to search for new methods that aid in the early diagnosis of PD. In recent years, microRNAs (miRs) have emerged as potential biomarkers for a variety of diseases and hold the potential to be used to aid in the diagnosis of PD. Therefore, the aim of this study was to characterize if specific miRs are differentially expressed in serum in a mouse model of PD. To induce PD-like damage, mice were subcutaneously injected with 25 mg/kg of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine hydrochloride (MPTP) by administering 10 doses over a period of 5 weeks, with 3.5 days between doses. Expression of 71 different microRNAs was quantified in serum separated from blood collected at day 35, using next-generation sequencing. Histological analysis and quantification of neurotransmitters were performed to confirm dopaminergic neurodegeneration. Chronic MPTP treatment induced loss of dopaminergic terminals in the SNpc and caudate putamen, confirmed by a decrease in the number of tyrosine hydroxylase and dopamine transporter positive cells. In addition, MPTP decreased the concentration of dopamine and its metabolites in the SNpc, simulating the damage observed in PD. From the 71 miRs analyzed, only 4 were differentially expressed after MPTP treatment. Serum levels of miR19b, miR124, miR126a and miR133b were significantly decreased in MPTP-treated mice compared to control. These data suggest that specific miRs are downregulated in a pre-clinical model of PD and hold the potential to be used as biomarkers to aid in the diagnosis of this disease. Further experiments need to be conducted to validate the use of these miRs as biomarkers of PD in additional pre-clinical models as well as in samples from patients diagnosed with PD.
Collapse
Affiliation(s)
- Hector Rosas-Hernandez
- Division of Neurotoxicology, National Center for Toxicological Research, 3900 NCTR Road, Jefferson, AR, 72079, USA
| | - Srinivasulu Chigurupati
- Office of Regulatory Affairs, Office of Regulatory Science, Food and Drug Administration, Parklawn Drive, Rockville, MD, 20857, USA
| | - James Raymick
- Division of Neurotoxicology, National Center for Toxicological Research, 3900 NCTR Road, Jefferson, AR, 72079, USA
| | - Bonnie Robinson
- Division of Neurotoxicology, National Center for Toxicological Research, 3900 NCTR Road, Jefferson, AR, 72079, USA
| | - Elvis Cuevas
- Division of Neurotoxicology, National Center for Toxicological Research, 3900 NCTR Road, Jefferson, AR, 72079, USA
| | - Joseph Hanig
- Office of Testing & Research, CDER/FDA, White Oak, MD, 20993, USA
| | - Sumit Sarkar
- Division of Neurotoxicology, National Center for Toxicological Research, 3900 NCTR Road, Jefferson, AR, 72079, USA.
| |
Collapse
|
10
|
Rosas-Hernandez H, Cuevas E, Escudero-Lourdes C, Lantz SM, Sturdivant NM, Imam SZ, Sarkar S, Slikker W, Paule MG, Balachandran K, Ali SF. Characterization of uniaxial high-speed stretch as an in vitro model of mild traumatic brain injury on the blood-brain barrier. Neurosci Lett 2018; 672:123-129. [DOI: 10.1016/j.neulet.2018.02.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 02/09/2018] [Indexed: 12/20/2022]
|
11
|
Rosas-Hernandez H, Cuevas E, Lantz SM, Paule MG, Ali SF. Isolation and Culture of Brain Microvascular Endothelial Cells for In Vitro Blood-Brain Barrier Studies. Methods Mol Biol 2018; 1727:315-331. [PMID: 29222791 DOI: 10.1007/978-1-4939-7571-6_23] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The blood-brain barrier (BBB) is essential to maintain the proper microenvironment for brain function. Although formed by different cell types, the endothelial cells (ECs) of the brain microvessels provide the BBB with its selective permeability. To study the BBB in vitro, EC lines as well as primary isolated ECs have been used. In this chapter, we will provide a detailed protocol on how to isolate and culture primary brain microvascular endothelial cells from different species for use as in vitro models of the BBB. When performed properly, this protocol will allow one to obtain a pure culture of brain microvascular endothelial cells with which to analyze the effects of therapeutic and toxic agents on BBB functions.
Collapse
Affiliation(s)
- Hector Rosas-Hernandez
- Division of Neurotoxicology, HFT-132, National Center for Toxicological Research/USFDA, Jefferson, AR, USA
| | - Elvis Cuevas
- Division of Neurotoxicology, HFT-132, National Center for Toxicological Research/USFDA, Jefferson, AR, USA
| | - Susan M Lantz
- Division of Neurotoxicology, HFT-132, National Center for Toxicological Research/USFDA, Jefferson, AR, USA
| | - Merle G Paule
- Division of Neurotoxicology, HFT-132, National Center for Toxicological Research/USFDA, Jefferson, AR, USA
| | - Syed F Ali
- Division of Neurotoxicology, HFT-132, National Center for Toxicological Research/USFDA, Jefferson, AR, USA.
| |
Collapse
|
12
|
Imam SZ, He Z, Cuevas E, Rosas-Hernandez H, Lantz SM, Sarkar S, Raymick J, Robinson B, Hanig JP, Herr D, MacMillan D, Smith A, Liachenko S, Ferguson S, O'Callaghan J, Miller D, Somps C, Pardo ID, Slikker W, B Pierson J, Roberts R, Gong B, Tong W, Aschner M, J Kallman M, Calligaro D, Paule MG. Changes in the metabolome and microRNA levels in biological fluids might represent biomarkers of neurotoxicity: A trimethyltin study. Exp Biol Med (Maywood) 2017; 243:228-236. [PMID: 29105512 DOI: 10.1177/1535370217739859] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Neurotoxicity has been linked with exposure to a number of common drugs and chemicals, yet efficient, accurate, and minimally invasive methods to detect it are lacking. Fluid-based biomarkers such as those found in serum, plasma, urine, and cerebrospinal fluid have great potential due to the relative ease of sampling but at present, data on their expression and translation are lacking or inconsistent. In this pilot study using a trimethyl tin rat model of central nervous system toxicity, we have applied state-of-the-art assessment techniques to identify potential individual biomarkers and patterns of biomarkers in serum, plasma, urine or cerebral spinal fluid that may be indicative of nerve cell damage and degeneration. Overall changes in metabolites and microRNAs were observed in biological fluids that were associated with neurotoxic damage induced by trimethyl tin. Behavioral changes and magnetic resonance imaging T2 relaxation and ventricle volume changes served to identify animals that responded to the adverse effects of trimethyl tin. Impact statement These data will help design follow-on studies with other known neurotoxicants to be used to assess the broad applicability of the present findings. Together this approach represents an effort to begin to develop and qualify a set of translational biochemical markers of neurotoxicity that will be readily accessible in humans. Such biomarkers could prove invaluable for drug development research ranging from preclinical studies to clinical trials and may prove to assist with monitoring of the severity and life cycle of brain lesions.
Collapse
Affiliation(s)
- Syed Z Imam
- 1 Division of Neurotoxicology, US FDA, 4136 NCTR , Jefferson, AR 72079, USA
| | - Zhen He
- 1 Division of Neurotoxicology, US FDA, 4136 NCTR , Jefferson, AR 72079, USA
| | - Elvis Cuevas
- 1 Division of Neurotoxicology, US FDA, 4136 NCTR , Jefferson, AR 72079, USA
| | | | - Susan M Lantz
- 1 Division of Neurotoxicology, US FDA, 4136 NCTR , Jefferson, AR 72079, USA
| | - Sumit Sarkar
- 1 Division of Neurotoxicology, US FDA, 4136 NCTR , Jefferson, AR 72079, USA
| | - James Raymick
- 1 Division of Neurotoxicology, US FDA, 4136 NCTR , Jefferson, AR 72079, USA
| | - Bonnie Robinson
- 1 Division of Neurotoxicology, US FDA, 4136 NCTR , Jefferson, AR 72079, USA
| | | | - David Herr
- 3 US EPA, 96653 NHEERL , Research Triangle Park, North Carolina, NC 27711, USA
| | - Denise MacMillan
- 3 US EPA, 96653 NHEERL , Research Triangle Park, North Carolina, NC 27711, USA
| | - Aaron Smith
- 4 Lilly, Lilly Corporate Center, Indianapolis, Indiana, IN 46285, USA
| | - Serguei Liachenko
- 1 Division of Neurotoxicology, US FDA, 4136 NCTR , Jefferson, AR 72079, USA
| | - Sherry Ferguson
- 1 Division of Neurotoxicology, US FDA, 4136 NCTR , Jefferson, AR 72079, USA
| | | | | | | | | | - William Slikker
- 1 Division of Neurotoxicology, US FDA, 4136 NCTR , Jefferson, AR 72079, USA
| | | | - Ruth Roberts
- 8 Department of Biosciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Binsheng Gong
- 9 Division of Bioinformatics, US FDA, 4136 NCTR , Jefferson, AR 72079, USA
| | - Weida Tong
- 9 Division of Bioinformatics, US FDA, 4136 NCTR , Jefferson, AR 72079, USA
| | - Michael Aschner
- 10 Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Mary J Kallman
- 11 Kallman Preclinical Consulting, Greenfield, IN 46140, USA
| | - David Calligaro
- 3 US EPA, 96653 NHEERL , Research Triangle Park, North Carolina, NC 27711, USA
| | - Merle G Paule
- 1 Division of Neurotoxicology, US FDA, 4136 NCTR , Jefferson, AR 72079, USA
| |
Collapse
|
13
|
Lantz SM, Rosas-Hernandez H, Cuevas E, Robinson B, Rice KC, Fantegrossi WE, Imam SZ, Paule MG, Ali SF. Monoaminergic toxicity induced by cathinone phthalimide: An in vitro study. Neurosci Lett 2017; 655:76-81. [PMID: 28684237 DOI: 10.1016/j.neulet.2017.06.059] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 05/17/2017] [Revised: 06/21/2017] [Accepted: 06/30/2017] [Indexed: 12/26/2022]
Abstract
Bath salts, or synthetic cathinones, have cocaine-like or amphetamine-like properties and induce psychoactive effects via their capacity to modulate serotonin (5-HT) and dopamine (DA). Structurally distinct synthetic cathinones are continuously being generated to skirt existing drug laws. One example of these modified compounds is cathinone phthalimide (CP), which has already appeared on the global market. The lack of toxicological studies on the effects of CP on monoaminergic systems led to the development of the present study in order to generate an acute toxicity profile for CP, and to clarify whether it primarily affects both dopamine and serotonin, like the synthetic cathinones mephedrone and methylone, or primarily affects dopamine, like 3, 4-methylenedioxypyrovalerone (MDPV). For the first time, the toxicity profile of CP (10μM-1000μM) is reported. In pheochromocytoma cells, exposure to CP induced cell death, and altered mitochondrial function, as well as intracellular DA and 5-HT levels; at the same time, reduced glutathione (GSH) levels remained unaffected. This seems to indicate that CP functions like mephedrone or methylone. The role of CP metabolites, the effect of CP induced hyperthermia on neurotoxicity, and its ability to traverse the blood-brain barrier warrant further consideration.
Collapse
Affiliation(s)
- Susan M Lantz
- Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/FDA, 3900 NCTR Rd, HFT-132, Jefferson, AR, 72079, United States.
| | - Hector Rosas-Hernandez
- Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/FDA, 3900 NCTR Rd, HFT-132, Jefferson, AR, 72079, United States.
| | - Elvis Cuevas
- Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/FDA, 3900 NCTR Rd, HFT-132, Jefferson, AR, 72079, United States.
| | - Bonnie Robinson
- Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/FDA, 3900 NCTR Rd, HFT-132, Jefferson, AR, 72079, United States.
| | - Kenner C Rice
- Drug Design and Synthesis Section, Molecular Targets and Medications Discovery Branch, NIDA/NIAAA 9800 Medical Center Drive Rm 228A, MSC-3373, Bethesda, MD, 20892, United States.
| | - William E Fantegrossi
- Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States.
| | - Syed Z Imam
- Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/FDA, 3900 NCTR Rd, HFT-132, Jefferson, AR, 72079, United States.
| | - Merle G Paule
- Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/FDA, 3900 NCTR Rd, HFT-132, Jefferson, AR, 72079, United States.
| | - Syed F Ali
- Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/FDA, 3900 NCTR Rd, HFT-132, Jefferson, AR, 72079, United States.
| |
Collapse
|
14
|
Rosas-Hernandez H, Cuevas E, Lantz S, Imam A, Sturdivant N, Balachandran K, Slikker W, Paule M, Ali S. Neurovascular unit components on a chip as a model to study traumatic brain injury. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.07.211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
15
|
Rosas-Hernandez H, Cuevas E, Lantz SM, Rice KC, Gannon BM, Fantegrossi WE, Gonzalez C, Paule MG, Ali SF. Methamphetamine, 3,4-methylenedioxymethamphetamine (MDMA) and 3,4-methylenedioxypyrovalerone (MDPV) induce differential cytotoxic effects in bovine brain microvessel endothelial cells. Neurosci Lett 2016; 629:125-130. [PMID: 27320055 DOI: 10.1016/j.neulet.2016.06.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [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: 04/29/2016] [Revised: 06/07/2016] [Accepted: 06/15/2016] [Indexed: 01/08/2023]
Abstract
Designer drugs such as synthetic psychostimulants are indicative of a worldwide problem of drug abuse and addiction. In addition to methamphetamine (METH), these drugs include 3,4-methylenedioxy-methamphetamine (MDMA) and commercial preparations of synthetic cathinones including 3,4-methylenedioxypyrovalerone (MDPV), typically referred to as "bath salts." These psychostimulants exert neurotoxic effects by altering monoamine systems in the brain. Additionally, METH and MDMA adversely affect the integrity of the blood-brain barrier (BBB): there are no current reports on the effects of MDPV on the BBB. The aim of this study was to compare the effects of METH, MDMA and MDPV on bovine brain microvessel endothelial cells (bBMVECs), an accepted in vitro model of the BBB. Confluent bBMVEC monolayers were treated with METH, MDMA and MDPV (0.5mM-2.5mM) for 24h. METH and MDMA increased lactate dehydrogenase release only at the highest concentration (2.5mM), whereas MDPV induced cytotoxicity at all concentrations. MDMA and METH decreased cellular proliferation only at 2.5mM, with similar effects observed after MDPV exposures starting at 1mM. Only MDPV increased reactive oxygen species production at all concentrations tested whereas all 3 drugs increased nitric oxide production. Morphological analysis revealed different patterns of compound-induced cell damage. METH induced vacuole formation at 1mM and disruption of the monolayer at 2.5mM. MDMA induced disruption of the endothelial monolayer from 1mM without vacuolization. On the other hand, MDPV induced monolayer disruption at doses ≥0.5mM without vacuole formation; at 2.5mM, the few remaining cells lacked endothelial morphology. These data suggest that even though these synthetic psychostimulants alter monoaminergic systems, they each induce BBB toxicity by different mechanisms with MDPV being the most toxic.
Collapse
Affiliation(s)
- Hector Rosas-Hernandez
- Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR, USA
| | - Elvis Cuevas
- Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR, USA
| | - Susan M Lantz
- Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR, USA
| | - Kenner C Rice
- Drug Design and Synthesis Section, Molecular Targets and Medications Discovery Branch, NIDA/NIAAA, Bethesda, MD, USA
| | - Brenda M Gannon
- Department of Pharmacology & Toxicology, UAMS, Little Rock, AR, USA
| | | | | | - Merle G Paule
- Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR, USA
| | - Syed F Ali
- Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR, USA.
| |
Collapse
|
16
|
Rosas-Hernandez H, Cuevas E, Lantz SM, Imam SZ, Rice KC, Gannon BM, Fantegrossi WE, Paule MG, Ali SF. 3,4-methylenedioxypyrovalerone (MDPV) Induces Cytotoxic Effects on Human Dopaminergic SH-SY5Y Cells. ACTA ACUST UNITED AC 2016. [DOI: 10.4303/jdar/235991] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
17
|
Rosas-Hernandez H, Ramirez M, Ramirez-Lee MA, Ali SF, Gonzalez C. Inhibition of prolactin with bromocriptine for 28days increases blood-brain barrier permeability in the rat. Neuroscience 2015; 301:61-70. [PMID: 26047726 DOI: 10.1016/j.neuroscience.2015.05.066] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 03/09/2015] [Revised: 05/12/2015] [Accepted: 05/27/2015] [Indexed: 01/09/2023]
Abstract
The blood-brain barrier (BBB) is necessary for the proper function of the brain. Its maintenance is regulated by endogenous factors. Recent evidences suggest prolactin (PRL) regulates the BBB properties in vitro, nevertheless no evidence of these effects have been reported in vivo. The aim of this study was to evaluate the role of PRL in the maintenance of the BBB in the rat. Male Wistar rats were treated with Bromocriptine (Bromo) to inhibit PRL production for 28days in the absence or presence of lipopolysaccharide (LPS). BBB permeability was evaluated through the Evans Blue dye and fluorescein-dextran extravasation as well as through edema formation. The expression of claudin-5, occludin, glial fibrillary acidic protein (GFAP) and the PRL receptor (PRLR) was evaluated through western blot. Bromo reduced the physiological levels of PRL at 28days. At the same time, Bromo increased BBB permeability and edema formation associated with a decrement in claudin-5 and occludin and potentiated the increase in BBB permeability induced by LPS. However, no neuroinflammation was detected, since the expression of GFAP was unchanged, as well as the expression of the PRLR. These data provide the first evidence that inhibition of PRL with Bromo affects the maintenance of the BBB through modulating the expression of tight junction proteins in vivo.
Collapse
Affiliation(s)
- H Rosas-Hernandez
- Laboratorio de Fisiologia Celular, Facultad de Ciencias Quimicas, Universidad Autonoma de San Luis Potosi, Av. Manuel Nava 6, Colonia Universitaria, San Luis Potosi, SLP 78210, Mexico
| | - M Ramirez
- Laboratorio de Fisiologia Celular, Facultad de Ciencias Quimicas, Universidad Autonoma de San Luis Potosi, Av. Manuel Nava 6, Colonia Universitaria, San Luis Potosi, SLP 78210, Mexico
| | - M A Ramirez-Lee
- Laboratorio de Fisiologia Celular, Facultad de Ciencias Quimicas, Universidad Autonoma de San Luis Potosi, Av. Manuel Nava 6, Colonia Universitaria, San Luis Potosi, SLP 78210, Mexico
| | - S F Ali
- Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - C Gonzalez
- Laboratorio de Fisiologia Celular, Facultad de Ciencias Quimicas, Universidad Autonoma de San Luis Potosi, Av. Manuel Nava 6, Colonia Universitaria, San Luis Potosi, SLP 78210, Mexico.
| |
Collapse
|
18
|
Gonzalez C, Rosas-Hernandez H, Jurado-manzano B, Ramirez-Lee MA, Salazar-Garcia S, Martinez-Cuevas PP, Velarde-salcedo AJ, Morales-Loredo H, Espinosa-Tanguma R, Ali SF, Rubio R. The prolactin family hormones regulate vascular tone through NO and prostacyclin production in isolated rat aortic rings. Acta Pharmacol Sin 2015; 36:572-86. [PMID: 25891087 DOI: 10.1038/aps.2014.159] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 09/26/2014] [Indexed: 01/17/2023] Open
Abstract
AIM Prolactin family hormones include growth hormone, placental lactogen and prolactin, which are able to regulate angiogenesis via NO and prostaglandins. However, their effects on vascular tone are not fully understood. The aim of this study was to evaluate the effects of prolactin family hormones on rat vascular tone in vitro. METHODS Aortic rings were prepared from adult male rats and precontracted with phenylephrine, then treated with the hormones and drugs. The tension was measured with isometric force displacement transducer connected to a polygraph. NO production and prostacyclin release in physiological solution was determined. Cultured rat aortic endothelial cells (RAECs) were treated with the hormones and drugs, and the phosphorylation of eNOS at serine 1177 was assessed using Western bolt analysis. RESULTS Administration of growth hormone or placental lactogen (0.01-100 nmol/L) induced endothelium-dependent vasodilation. Both the hormones significantly increased the phosphorylation of eNOS in RAECs and NO level in physiological solution. Preincubation with L-NAME blocked growth hormone- or placental lactogen-induced vasodilation and NO production. Preincubation with an antibody against growth hormone receptors blocked growth hormone- and placental lactogen-induced vasodilation. Addition of a single dose of prolactin (0.01 nmol/L) induced sustained vessel relaxation, whereas multiple doses of prolactin induced a biphasic contraction-relaxation effect. The vascular effects of prolactin depended on endothelium. Prolactin significantly increased the level of prostacyclin I2 in physiological solution. Preincubation with indomethacin or an antibody against prolactin receptors blocked prolactin-induced vasodilation. CONCLUSION The prolactin family hormones regulate rat vascular tone, selectively promoting either relaxation or contraction of vascular smooth muscle via activation of either growth hormone receptors or prolactin receptors within the endothelium.
Collapse
|
19
|
Gonzalez C, Rosas-Hernandez H, Ramirez-Lee MA, Salazar-García S, Ali SF. Role of silver nanoparticles (AgNPs) on the cardiovascular system. Arch Toxicol 2014; 90:493-511. [DOI: 10.1007/s00204-014-1447-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 12/17/2014] [Indexed: 01/13/2023]
|
20
|
Gu Q, Lantz S, Rosas-Hernandez H, Cuevas E, Ali SF, Paule MG, Sarkar S. In vitro detection of cytotoxicity using FluoroJade-C. Toxicol In Vitro 2014; 28:469-72. [DOI: 10.1016/j.tiv.2014.01.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 01/09/2014] [Accepted: 01/10/2014] [Indexed: 11/24/2022]
|
21
|
Rosas-Hernandez H, Cuevas E, Lantz SM, Ali SF, Gonzalez C. Prolactin protects against the methamphetamine-induced cerebral vascular toxicity. Curr Neurovasc Res 2014; 10:346-55. [PMID: 23988027 DOI: 10.2174/15672026113109990031] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 08/25/2013] [Accepted: 08/26/2013] [Indexed: 11/22/2022]
Abstract
Methamphetamine (Meth) is a highly addictive drug of abuse which alters the dopaminergic system and damages the blood-brain barrier (BBB), structure that protects the brain tissue from the circulating substances in the blood, keeping a low permeability through the presence of tight junctions (TJs) between endothelial cells. Meth increases BBB permeability by decreasing the TJs proteins claudin-5 and occludin and by decreasing the viability of endothelial cells. Individuals abused of Meth have increased blood concentrations of prolactin (PRL); hormone related with milk production, but able to increase the expression of TJs proteins and to decrease permeability on the mammary epithelium and brain endothelial cells. However, the effects of PRL on the permeability of the BBB in the presence of Meth have not been studied. Here, we report Meth-induced apoptosis and decreased cellular proliferation as well as the trans-endothelial electrical resistance (TEER), related to a decrease of claudin-5 and occludin in primary cultured bovine brain microvessel endothelial cells. The expression of the PRL receptor was not altered. Administration of PRL prevented a decrease in cellular proliferation, an increase in apoptosis and restored the TEER and TJs proteins to basal levels. This protection was absent at high Meth concentrations. These data suggest that PRL protects brain endothelial cells against the Meth-induced toxicity. Further investigation is required to study the mechanisms involved and to confirm these effects in vivo.
Collapse
Affiliation(s)
- Hector Rosas-Hernandez
- Laboratorio de Fisiologia Celular, Facultad de Ciencias Quimicas, Universidad Autonoma de San Luis Potosi. Av. Manuel Nava 6, Colonia Universitaria, San Luis Potosi, SLP. Mexico 78210.
| | | | | | | | | |
Collapse
|
22
|
Rosas-Hernandez H, Cuevas E, Lantz S, Hamilton W, Ramirez-Lee M, Ali S, Gonzalez C. Prolactin and Blood-Brain Barrier Permeability. Curr Neurovasc Res 2013; 10:278-86. [DOI: 10.2174/15672026113109990025] [Citation(s) in RCA: 17] [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] [Received: 07/04/2013] [Revised: 08/01/2013] [Accepted: 08/02/2013] [Indexed: 11/22/2022]
|
23
|
Aragon-Franco R, Rosas-Hernandez H, Garrido-Sanchez G, Astudillo H. Proteomic analysis of TLR7 expression and clinical correlation in prostate carcinomas compared with prostatic benign lesions. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e15195] [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: 11/20/2022] Open
|