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Flores PEM, Sandes AF, Prato CB, Cantarino LP, Silva PMC, Silva GMC, Pereira TAS, Poles WA, Martins RS, Jesus SMCBP. HISTIOCITOSE DE CÉLULAS AZUL MARINHO – RELATO DE CASO. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.215] [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: 11/06/2022] Open
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Cantarino LP, Poles WA, Soares LR, Flores PEM, Martins RS, Silva PMC, Prato CB, Carvalho MEAJ, Silva GMC, Silva CAR. CLONAL EVOLUTION TO ACUTE MYELOID LEUKEMIA FOUR YEARS AFTER ALEMTUZUMAB AND CYCLOSPORINE IMMUNOSUPPRESSION IN A PATIENT WITH VERY SEVERE APLASTIC ANEMIA. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.099] [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: 11/07/2022] Open
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Kubrusly RCC, da Rosa Valli T, Ferreira MNMR, de Moura P, Borges-Martins VPP, Martins RS, Ferreira DDP, Sathler MF, de Melo Reis RA, Ferreira GC, Manhães AC, Dos Santos Pereira M. Caffeine Improves GABA Transport in the Striatum of Spontaneously Hypertensive Rats (SHR). Neurotox Res 2021; 39:1946-1958. [PMID: 34637050 DOI: 10.1007/s12640-021-00423-0] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 09/25/2021] [Accepted: 09/27/2021] [Indexed: 11/28/2022]
Abstract
The spontaneously hypertensive rat (SHR) is an excellent animal model that mimics the behavioral and neurochemical phenotype of attention-deficit/hyperactivity disorder (ADHD). Here, we characterized the striatal GABA transport of SHR and investigated whether caffeine, a non-selective antagonist of adenosine receptors, could influence GABAergic circuitry. For this purpose, ex vivo striatal slices of SHR and Wistar (control strain) on the 35th postnatal day were dissected and incubated with [3H]-GABA to quantify the basal levels of uptake and release. SHR exhibited a reduced [3H]-GABA uptake and release, suggesting a defective striatal GABAergic transport system. GAT-1 appears to be the primary transporter for [3H]-GABA uptake in SHR striatum, as GAT-1 selective blocker, NO-711, completely abolished it. We also verified that acute exposure of striatal slices to caffeine improved [3H]-GABA uptake and release in SHR, whereas Wistar rats were not affected. GABA-uptake increase and cAMP accumulation promoted by caffeine was reverted by A1R activation with N6-cyclohexyl adenosine (CHA). As expected, the pharmacological blockade of cAMP-PKA signaling by H-89 also prevented caffeine-mediated [3H]-GABA uptake increment. Interestingly, a single caffeine exposure did not affect GAT-1 or A1R protein density in SHR, which was not different from Wistar protein levels, suggesting that the GAT-1-dependent transport in SHR has a defective functional activity rather than lower protein expression. The current data support that caffeine regulates GAT-1 function and improves striatal GABA transport via A1R-cAMP-PKA signaling, specifically in SHR. These results reinforce that caffeine may have therapeutic use in disorders where the GABA transport system is impaired.
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Affiliation(s)
| | | | | | - Pâmella de Moura
- Laboratório de Neurofarmacologia, Instituto Biomédico, Niterói, RJ, Brazil
| | | | - Robertta Silva Martins
- Laboratório de Neurofarmacologia, Instituto Biomédico, Niterói, RJ, Brazil
- Laboratório de Neurobiologia Celular E Molecular, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - Ricardo Augusto de Melo Reis
- Laboratório de Neuroquímica, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gustavo Costa Ferreira
- Laboratório de Neuroenergética E Erros Inatos Do Metabolismo, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alex Christian Manhães
- Laboratório de Neurofisiologia, Instituto de Biologia, Universidade Do Estado Do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Maurício Dos Santos Pereira
- Laboratório de Neurofarmacologia, Instituto Biomédico, Niterói, RJ, Brazil.
- Laboratório de Neurofisiologia Molecular, Departamento de Biologia Básica E Oral, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil.
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Malik MA, Inam H, Martins RS, Janjua MBN, Zahid N, Khan S, Sattar AK, Khan S, Haider AH, Enam SA. Workplace mistreatment and mental health in female surgeons in Pakistan. BJS Open 2021; 5:6284043. [PMID: 34037208 PMCID: PMC8152181 DOI: 10.1093/bjsopen/zrab041] [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: 10/09/2020] [Accepted: 03/22/2021] [Indexed: 11/18/2022] Open
Abstract
Background Despite workplace mistreatment, which includes harassment, bullying and gender discrimination(GD)/bias, being serious problems for female surgeons, there are limited data from lower–middle-income countries like Pakistan. This study explored harassment and GD/bias experienced by female surgeons in Pakistan, and the effects of these experiences on mental health and well-being. Methods A nationwide survey was conducted between July and September 2019 in collaboration with the Association of Women Surgeons of Pakistan, an organization consisting of female surgeons and trainees in Pakistan. An anonymous online survey was emailed directly, disseminated via social media platforms (such as Facebook, Twitter and Instagram), and sent to surgical programmes in Pakistan. Results A total of 146 women surgeons responded to the survey; 67.1 per cent were trainees and the rest attending surgeons. Overall, 57.5 per cent of surgeons reported experiencing harassment, most common being verbal (64.0 per cent) and mental (45.9 per cent), but this mostly went unreported (91.5 per cent). On multivariable analysis adjusted for age and specialty, workplace harassment (odds ratio 2.02 (95 per cent c.i. 1.09 to 4.45)) and bullying (odds ratio 5.14 (95 per cent c.i. 2.00–13.17)) were significantly associated with severe self-perceived burnout, while having a support system was protective against feelings of depression (odds ratio 0.35 (95 per cent c.i. 0.16 to 0.74)). The overwhelming majority (91.3 per cent) believed that more institutional support groups were needed to help surgeons with stress reduction (78.8 per cent), receiving mentorship (74.7 per cent) and work–life balance (67.8 per cent). Conclusion Workplace mistreatment, in particular harassment and bullying, has a damaging impact on the mental well-being of female surgeons, particularly trainees. The absence of support groups in Pakistan should be urgently addressed so that surgeons, especially trainees, may cope better with potentially harmful workplace stressors.
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Affiliation(s)
- M A Malik
- Department of Surgery, Aga Khan University Hospital, Karachi, Pakistan
| | - H Inam
- Department of Surgery, Aga Khan University Hospital, Karachi, Pakistan
| | - R S Martins
- Medical College, Aga Khan University Hospital, Karachi, Pakistan
| | - M B N Janjua
- Department of Surgery, Howard University Hospital, Washington, DC, USA
| | - N Zahid
- Department of Surgery, Aga Khan University Hospital, Karachi, Pakistan
| | - S Khan
- Department of Surgery, Aga Khan University Hospital, Karachi, Pakistan
| | - A K Sattar
- Department of Surgery, Aga Khan University Hospital, Karachi, Pakistan
| | - S Khan
- Department of Surgery, Aga Khan University Hospital, Karachi, Pakistan
| | - A H Haider
- Medical College, Aga Khan University Hospital, Karachi, Pakistan
| | - S A Enam
- Department of Surgery, Aga Khan University Hospital, Karachi, Pakistan
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Viana MB, Martins RS, Silva MSCF, Xapelli S, Vaz SH, Sebastião AM. Deep Brain Stimulation of the dorsal raphe abolishes serotonin 1A facilitation of AMPA receptor-mediated synaptic currents in the ventral hippocampus. Behav Brain Res 2021; 403:113134. [PMID: 33476685 DOI: 10.1016/j.bbr.2021.113134] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 12/11/2020] [Accepted: 01/11/2021] [Indexed: 11/24/2022]
Abstract
In a previous study we showed that Deep Brain Stimulation (DBS) of the rat dorsal subregion of the dorsal raphe (DRD), which sends serotonergic projections to forebrain areas, such as the ventral hippocampus, induces anxiolytic-like effects. The purpose of the present study was to investigate neurobiological alterations which might underline these behavioral effects. For that, we tested the influence of DBS upon the neuromodulatory action of serotonin on excitatory post-synaptic currents (EPSCs) in the ventral hippocampus. Male Wistar rats were submitted to high-frequency stimulation (100 μA, 100 Hz) of the DRD for 1 h during three consecutive days. On the third day, immediately after the DBS procedure, animals were euthanized. Slices of the ventral hippocampus were processed for whole cell patch clamp recordings of AMPA-receptor (AMPAR) mediated EPSCs in the CA1 area. As reported by others, we confirmed that in pre-weaning rats a high affinity 5-HT1A receptor agonist (8-OH-PIPAT, 0.5-5nM) inhibits EPSCs. However, in adult rats (non-operated or sham-operated), 8-OH-PIPAT (0.5-5 nM) increased EPSC amplitude, an effect blocked by the 5-HT1A antagonist WAY-100,635 (200 nM). Importantly, in adult rats exposed to DBS, the 5-HT1A agonist was devoid of effect. Taken together these results show that: 1) changes in 5-HT1A receptor-mediated hippocampal synaptic transmission occur with age; 2) these changes lead to a facilitatory effect of 5-HT1A receptors; 3) DBS blocks this serotonergic facilitatory action. These observations suggest that an alteration in serotonin modulation of limbic areas may underlie the psychotherapeutic effects of DBS.
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Affiliation(s)
- M B Viana
- Departamento de Biociências, Universidade Federal de São Paulo (UNIFESP), Santos, Brazil.
| | - R S Martins
- Departamento de Farmacologia e Fisiologia, Universidade Federal Fluminense (UFF), Niterói, Brazil
| | - M S C F Silva
- Departamento de Biociências, Universidade Federal de São Paulo (UNIFESP), Santos, Brazil
| | - S Xapelli
- Instituto Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal; Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - S H Vaz
- Instituto Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal; Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - A M Sebastião
- Instituto Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal; Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
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de Santana Souza L, de Siqueira PA, Fernandes A, Silva Martins R, Cussa Kubrusly RC, Paes-de-Carvalho R, Cunha RA, Dos Santos-Rodrigues A, Pandolfo P. Role of Neuropeptide S on Behavioural and Neurochemical Changes of an Animal Model of Attention-Deficit/Hyperactivity Disorder. Neuroscience 2020; 448:140-148. [PMID: 32976984 DOI: 10.1016/j.neuroscience.2020.09.030] [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: 04/25/2020] [Revised: 09/06/2020] [Accepted: 09/10/2020] [Indexed: 10/23/2022]
Abstract
Neuropeptide S (NPS) is a recently discovered peptide signalling through its receptor NPSR, which is expressed throughout the brain. Since NPSR activation increases dopaminergic transmission, we now tested if NPSR modulates behavioural and neurochemical alterations displayed by an animal model of attention-deficit/hyperactivity disorder (ADHD), Spontaneous Hypertensive Rats (SHR), compared to its control strain, Wistar Kyoto rats (WKY). NPS (0.1 and 1 nmol, intracerebroventricularly (icv)) did not modify the performance in the open field test in both strains; however, NPSR antagonism with [tBu-d-Gly5]NPS (3 nmol, icv) increased, per se, the total distance travelled by WKY. In the elevated plus-maze, NPS (1 nmol, icv) increased the percentage of entries in the open arms (%EO) only in WKY, an effect prevented by pretreatment with [tBu-d-Gly5]NPS (3 nmol, icv), which decreased per se the %EO in WKY and increased their number of entries in the closed arms. Immunoblotting of frontal cortical extracts showed no differences of NPSR density, although SHR had a lower NPS content than WKY. SHR showed higher activity of dopamine uptake than WKY, and NPS (1 nmol, icv) did not change this profile. Overall, the present work shows that the pattern of functioning of the NPS system is distinct in WKY and SHR, suggesting that this system may contribute to the pathophysiology of ADHD.
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Affiliation(s)
| | | | - Arlete Fernandes
- Department of Physiology and Pharmacology, Universidade Federal Fluminense, Niterói, Brazil
| | - Robertta Silva Martins
- Department of Physiology and Pharmacology, Universidade Federal Fluminense, Niterói, Brazil
| | | | | | - Rodrigo A Cunha
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal; Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | | | - Pablo Pandolfo
- Department of Neurobiology, Universidade Federal Fluminense, Niterói, Brazil.
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Armada-Moreira A, Gomes JI, Pina CC, Savchak OK, Gonçalves-Ribeiro J, Rei N, Pinto S, Morais TP, Martins RS, Ribeiro FF, Sebastião AM, Crunelli V, Vaz SH. Going the Extra (Synaptic) Mile: Excitotoxicity as the Road Toward Neurodegenerative Diseases. Front Cell Neurosci 2020; 14:90. [PMID: 32390802 PMCID: PMC7194075 DOI: 10.3389/fncel.2020.00090] [Citation(s) in RCA: 120] [Impact Index Per Article: 30.0] [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: 12/18/2019] [Accepted: 03/26/2020] [Indexed: 12/13/2022] Open
Abstract
Excitotoxicity is a phenomenon that describes the toxic actions of excitatory neurotransmitters, primarily glutamate, where the exacerbated or prolonged activation of glutamate receptors starts a cascade of neurotoxicity that ultimately leads to the loss of neuronal function and cell death. In this process, the shift between normal physiological function and excitotoxicity is largely controlled by astrocytes since they can control the levels of glutamate on the synaptic cleft. This control is achieved through glutamate clearance from the synaptic cleft and its underlying recycling through the glutamate-glutamine cycle. The molecular mechanism that triggers excitotoxicity involves alterations in glutamate and calcium metabolism, dysfunction of glutamate transporters, and malfunction of glutamate receptors, particularly N-methyl-D-aspartic acid receptors (NMDAR). On the other hand, excitotoxicity can be regarded as a consequence of other cellular phenomena, such as mitochondrial dysfunction, physical neuronal damage, and oxidative stress. Regardless, it is known that the excessive activation of NMDAR results in the sustained influx of calcium into neurons and leads to several deleterious consequences, including mitochondrial dysfunction, reactive oxygen species (ROS) overproduction, impairment of calcium buffering, the release of pro-apoptotic factors, among others, that inevitably contribute to neuronal loss. A large body of evidence implicates NMDAR-mediated excitotoxicity as a central mechanism in the pathogenesis of many neurodegenerative diseases, including amyotrophic lateral sclerosis (ALS), Alzheimer's disease (AD), and epilepsy. In this review article, we explore different causes and consequences of excitotoxicity, discuss the involvement of NMDAR-mediated excitotoxicity and its downstream effects on several neurodegenerative disorders, and identify possible strategies to study new aspects of these diseases that may lead to the discovery of new therapeutic approaches. With the understanding that excitotoxicity is a common denominator in neurodegenerative diseases and other disorders, a new perspective on therapy can be considered, where the targets are not specific symptoms, but the underlying cellular phenomena of the disease.
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Affiliation(s)
- Adam Armada-Moreira
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus, Denmark
| | - Joana I. Gomes
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - Carolina Campos Pina
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - Oksana K. Savchak
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - Joana Gonçalves-Ribeiro
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - Nádia Rei
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - Sara Pinto
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - Tatiana P. Morais
- Neuroscience Division, School of Bioscience, Cardiff University, Cardiff, United Kingdom
| | - Robertta Silva Martins
- Laboratório de Neurofarmacologia, Instituto Biomédico, Universidade Federal Fluminense, Niterói, Brazil
| | - Filipa F. Ribeiro
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - Ana M. Sebastião
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - Vincenzo Crunelli
- Neuroscience Division, School of Bioscience, Cardiff University, Cardiff, United Kingdom
- Department of Physiology and Biochemistry, Faculty of Medicine and Surgery, University of Malta, Msida, Malta
| | - Sandra H. Vaz
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
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Martins RS, de Freitas IG, Sathler MF, Martins VPPB, Schitine CDS, da Silva Sampaio L, Freitas HR, Manhães AC, dos Santos Pereira M, de Melo Reis RA, Kubrusly RCC. Beta-adrenergic receptor activation increases GABA uptake in adolescent mice frontal cortex: Modulation by cannabinoid receptor agonist WIN55,212-2. Neurochem Int 2018; 120:182-190. [DOI: 10.1016/j.neuint.2018.08.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 08/15/2018] [Accepted: 08/16/2018] [Indexed: 01/09/2023]
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de Freitas AP, Ferreira DDP, Fernandes A, Martins RS, Borges-Martins VPP, Sathler MF, dos-Santos-Pereira M, Paes-de-Carvalho R, Giestal-de-Araujo E, de Melo Reis RA, Kubrusly RCC. Caffeine alters glutamate–aspartate transporter function and expression in rat retina. Neuroscience 2016; 337:285-294. [DOI: 10.1016/j.neuroscience.2016.09.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 09/11/2016] [Accepted: 09/13/2016] [Indexed: 12/21/2022]
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Sathler MF, Stutz B, Martins RS, Dos Santos Pereira M, Pecinalli NR, Santos LE, Taveira-da-Silva R, Lowe J, de Freitas IG, de Melo Reis RA, Manhães AC, Kubrusly RCC. Single exposure to cocaine impairs aspartate uptake in the pre-frontal cortex via dopamine D1-receptor dependent mechanisms. Neuroscience 2016; 329:326-36. [PMID: 27208619 DOI: 10.1016/j.neuroscience.2016.05.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 05/10/2016] [Accepted: 05/12/2016] [Indexed: 11/16/2022]
Abstract
Dopamine and glutamate play critical roles in the reinforcing effects of cocaine. We demonstrated that a single intraperitoneal administration of cocaine induces a significant decrease in [(3)H]-d-aspartate uptake in the pre-frontal cortex (PFC). This decrease is associated with elevated dopamine levels, and requires dopamine D1-receptor signaling (D1R) and adenylyl cyclase activation. The effect was observed within 10min of cocaine administration and lasted for up to 30min. This rapid response is related to D1R-mediated cAMP-mediated activation of PKA and phosphorylation of the excitatory amino acid transporters EAAT1, EAAT2 and EAAT3. We also demonstrated that cocaine exposure increases extracellular d-aspartate, l-glutamate and d-serine in the PFC. Our data suggest that cocaine activates dopamine D1 receptor signaling and PKA pathway to regulate EAATs function and extracellular EAA level in the PFC.
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Affiliation(s)
- Matheus Figueiredo Sathler
- Laboratório de Neurofarmacologia, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, Brazil.
| | - Bernardo Stutz
- Laboratório de Neuroquímica, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
| | - Robertta Silva Martins
- Laboratório de Neurofarmacologia, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, Brazil.
| | - Maurício Dos Santos Pereira
- Laboratório de Neurofarmacologia, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, Brazil; Laboratório de Neurofisiologia Molecular, Departamento de Fisiologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil.
| | - Ney Roner Pecinalli
- Laboratório de Neurofarmacologia, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, Brazil.
| | - Luis E Santos
- Laboratório de Neuroquímica, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
| | - Rosilane Taveira-da-Silva
- Laboratório de Fisico-Química Biológica Aída Hassón-Voloch Instituto de Biofísica Carlos Chagas Filho Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
| | - Jennifer Lowe
- Laboratório de Fisico-Química Biológica Aída Hassón-Voloch Instituto de Biofísica Carlos Chagas Filho Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
| | - Isis Grigorio de Freitas
- Laboratório de Neurofarmacologia, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, Brazil.
| | - Ricardo Augusto de Melo Reis
- Laboratório de Neuroquímica, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
| | - Alex C Manhães
- Laboratório de Neurofisiologia, Departamento de Ciências Fisiológicas, Instituto de Biologia Roberto Alcantara Gomes, Centro Biomédico, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
| | - Regina C C Kubrusly
- Laboratório de Neurofarmacologia, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, Brazil.
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da Silva BB, Sousa-Esteves FC, Martins RS, Salha CP, Paiva-Melo BN, Moura CS, Alves-Ribeiro FA. Clinical and epidemiological profile of women with breast cancer managed in a public referral hospital in northeastern Brazil. EUR J GYNAECOL ONCOL 2016; 37:814-816. [PMID: 29943927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
AIM To evaluate the clinical and epidemiological profile of women with breast cancer, managed in the Breast Service at Hospital Get6lio Vargas (HGV). MATERIALS AND METHODS A descriptive, observational cross-sectional study, involving 174 breast cancer patients, managed at the Breast Service at HGV in Teresina, in the northeast of Brazil, from May 2011 to June 2014. Epidemiological variables included age group, age at menarche, age at first childbirth, and menopause. The tumor characteristics studied were histological type, TNM classification, and staging. The results were organized in distribution tables. RESULTS Breast carcinoma was more common in patients aged 60 and over, in multiparous women, and in women who were menopausal before age 55. The most common histological type was ductal invasive carcinoma T2N1MO (Stage IIB) in 83 (48%) women. CONCLUSION The current study shows that the majority of carcinomas were Stage II or advanced tumors, with clinically positive axillary lymph node status and weak correlation with reproductive risk factors.
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Muniz FWMG, Sena KS, de Oliveira CC, Veríssimo DM, Carvalho RS, Martins RS. Efficacy of dental floss impregnated with chlorhexidine on reduction of supragingival biofilm: a randomized controlled trial. Int J Dent Hyg 2014; 13:117-24. [DOI: 10.1111/idh.12112] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/22/2014] [Indexed: 11/30/2022]
Affiliation(s)
- FWMG Muniz
- Department of Dental Practice; School of Pharmacy, Dentistry and Nursing; Federal University of Ceará; Fortaleza Ceará Brazil
| | - KS Sena
- Department of Dental Practice; School of Pharmacy, Dentistry and Nursing; Federal University of Ceará; Fortaleza Ceará Brazil
| | - CC de Oliveira
- Department of Dental Practice; School of Pharmacy, Dentistry and Nursing; Federal University of Ceará; Fortaleza Ceará Brazil
| | - DM Veríssimo
- Department of Dental Practice; School of Pharmacy, Dentistry and Nursing; Federal University of Ceará; Fortaleza Ceará Brazil
| | - RS Carvalho
- Discipline of Periodontology; School of Pharmacy, Dentistry and Nursing; Federal University of Ceará; Fortaleza Ceará Brazil
| | - RS Martins
- Discipline of Periodontology; School of Pharmacy, Dentistry and Nursing; Federal University of Ceará; Fortaleza Ceará Brazil
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Martins RS, Cavalcante NJF, Scota S, Gomes ADS, dos Santos PB, Moura SR. P281: Adequacy to the use of personal protective equipment in the isolations of emergency. Antimicrob Resist Infect Control 2013. [PMCID: PMC3688155 DOI: 10.1186/2047-2994-2-s1-p281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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14
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Martins RS, Silva FC, Heise CO, Teixeira MJ. A practical approach to the lateral cutaneous nerve of the thigh: an anatomical study. Clin Neurol Neurosurg 2011; 113:868-71. [PMID: 21764509 DOI: 10.1016/j.clineuro.2011.06.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2010] [Revised: 01/09/2011] [Accepted: 06/18/2011] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To study the main anatomical landmarks related to the lateral cutaneous nerve of the thigh (LCN) in the infrainguinal region and to define reliable criteria for identifying the nerve during the surgery and electrophysiological study. METHODS Bilateral dissections of 60 adult non-fixed cadavers were performed with measurements of the distance between the inferior border of the anterior superior iliac spine (ASIS) and the LCN (DAL) and the internal angle between the LCN and the inguinal ligament (IA). The number of nerves exiting the inguinal ligament, the position of the LCN relative to the ASIS and to inguinal ligament were observed and registered. A triangle was designed using the inguinal ligament, the ASIS and the direction of tendinous insertions of the tensor of fascia lata muscle as parameters and the nerves were tested according its localization inside the triangle in each dissection. RESULTS In 80% of the dissections, the LCN passed under the inguinal ligament and was identified lateral to ASIS in only three dissections. A great variability was observed in the values of DAL and IA. The values of DAL ranged from 0 (immediately medial to ASIS) to 5 cm on either side with means of 1.31 and 1.22 cm on the right and left side, respectively. The values of IA ranged from 40° to 120°, with a mean of 66.08° on the right side and from 40° to 130° with a mean of 69.92° on the left side. No significant differences were identified between the two sides with respect to the relationship between the nerve and the inguinal ligament (Chi-square test, p=0.83); DAL (t test, p=0.37) or IA (t test, p=0.15). A single nerve was found in 70.83% of the dissections. The nerve was found inside the triangle in 95% of the dissections. CONCLUSIONS Despite the symmetry found between the right and left sides, the values of the main anatomic parameters involved in the localization of the LCN presented a great degree of variability. Even so, dissection using the proposed anatomical triangle allows for the localization of the LCN in almost all cases.
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Affiliation(s)
- R S Martins
- Peripheral Nerve Surgery Unit, Department of Neurosurgery, São Paulo University, School of Medicine, Brazil.
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15
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Bustamante J, Socolovsky M, Martins RS, Emmerich J, Pennini MG, Lausada N, Domitrovic L. Effects of eliminating tension by means of epineural stitches: a comparative electrophysiological and histomorphometrical study using different suture techniques in an animal model. Arq Neuro-Psiquiatr 2011; 69:365-70. [DOI: 10.1590/s0004-282x2011000300019] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Accepted: 09/23/2010] [Indexed: 11/22/2022]
Abstract
Epineural stitches are a means to avoid tension in a nerve suture. We evaluate this technique, relative to interposed grafts and simple neurorraphy, in a rat model. METHOD: Twenty rats were allocated to four groups. For Group 1, sectioning of the sciatic nerve was performed, a segment 4 mm long discarded, and epineural suture with distal anchoring stitches were placed resulting in slight tension neurorraphy. For Group 2, a simple neurorraphy was performed. For Group 3, a 4 mm long graft was employed and Group 4 served as control. Ninety days after, reoperation, latency of motor action potentials recording and axonal counts were performed. Inter-group comparison was done by means of ANOVA and the non-parametric Kruskal-Wallis test. RESULTS: The mean motor latency for the simple suture (2.27±0.77 ms) was lower than for the other two surgical groups, but lower than among controls (1.69±0.56 ms). Similar values were founding in both group 1 (2.66±0.71 ms) and group 3 (2.64±0.6 ms). When fibers diameters were compared a significant difference was identified between groups 2 and 3 (p=0.048). CONCLUSION: Good results can be obtained when suturing a nerve employ with epineural anchoring stitches. However, more studies are needed before extrapolating results to human nerve sutures.
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Affiliation(s)
| | | | - R S Martins
- University of São Paulo; Hospital do Servidor Público do Estado, Brazil
| | - J Emmerich
- Hospital de Pediatría Sor María Ludovica, Argentina
| | - M G Pennini
- Hospital de Pediatría Sor María Ludovica, Argentina
| | - N Lausada
- National University of La Plata, Argentina
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Siqueira MG, Martins RS, Teixeira MJ. Management of brachial plexus region tumours and tumour-like conditions: relevant diagnostic and surgical features in a consecutive series of eighteen patients. Acta Neurochir (Wien) 2009; 151:1089-98. [PMID: 19448970 DOI: 10.1007/s00701-009-0380-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2008] [Accepted: 11/20/2008] [Indexed: 12/13/2022]
Abstract
BACKGROUND Tumours of the brachial plexus region are rare and most publications are case reports or studies with a small series of patients. The aim of this study is to present our experience in managing these lesions. METHODS We review 18 patients with tumours in the brachial plexus region submitted to surgical treatment in a 6 year period, including their clinical presentation, neuro-imaging data, surgical findings and outcome. FINDINGS The tumours comprised a heterogeneous group of lesions, including schwannomas, neurofibromas, malignant peripheral nerve sheath tumour (MPNST), sarcomas, metastases, desmoids and an aneurysmal bone cyst. The most common presentation was an expanding lump (83.33%). Eleven tumours were benign and 7 were malignant. Neurofibromatosis was present in only 2 patients (11.11%). Gross total resection was achieved in 14 patients and sub-total resection in the others. Only 3 patients presented with new post-operative motor deficits. The incidence of complications was low (16.5 %). CONCLUSIONS The majority of tumours were benign and most of them could be excised with a low incidence of additional deficits. Some of the malignant tumours could be controlled by surgery plus adjuvant therapy, but this category is still associated with high morbidity and mortality rates.
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Affiliation(s)
- M G Siqueira
- Peripheral Nerve Surgery Unit, Department of Neurosurgery, São Paulo University Medical School, São Paulo, SP, Brazil.
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17
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Martins RS, Siqueira MG, Simplício H, Agapito D, Medeiros M. Magnetic resonance imaging of idiopathic carpal tunnel syndrome: correlation with clinical findings and electrophysiological investigation. Clin Neurol Neurosurg 2007; 110:38-45. [PMID: 17920190 DOI: 10.1016/j.clineuro.2007.08.025] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2007] [Revised: 08/26/2007] [Accepted: 08/27/2007] [Indexed: 01/22/2023]
Abstract
OBJECTIVE To compare clinical evaluation, electrophysiological investigation and magnetic resonance findings in assessing the severity of idiopathic carpal tunnel syndrome. PATIENTS AND METHODS Seventy-four patients with idiopathic carpal tunnel syndrome were prospectively recruited. Clinical evaluation included symptoms severity score and two-point discrimination, sensory and motor nerve conduction velocities were determined by electroneuromyography and imaging parameters were obtained after wrist magnetic resonance. The Wilcoxon test was used to define the differences between measurements of median nerve area. The Pearson and Spearman correlation tests were used to determine the relationships between all the measured parameters. RESULTS Cross-sectional area of median nerve was smaller at hamate level than at radio-ulnar joint and pisiform levels (p<0.001). With exception of median nerve area at hamate level, there was a lower degree of correlation between MRI parameters and findings obtained by clinical assessments and electrophysiological measurements. The median nerve area at hamate level correlated negatively with duration of symptoms, two-point discrimination, symptoms severity score and positively with sensory nerve conduction velocity (p<0.01). CONCLUSION In patients with idiopathic carpal tunnel syndrome, median nerve area measured by wrist magnetic resonance at hamate level may be considered as a valuable indicator to grading the severity of disease.
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Affiliation(s)
- R S Martins
- Peripheral Nerve Unit, Department of Neurosurgery, Hospital Santa Marcelina, São Paulo, Brazil.
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18
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Martins RS, Siqueira MG, Carvalho AAS. A case of isolated tuberculoid leprosy of antebrachial medial cutaneous nerve. Neurol Sci 2005; 25:216-9. [PMID: 15549507 DOI: 10.1007/s10072-004-0324-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2004] [Accepted: 05/29/2004] [Indexed: 11/29/2022]
Abstract
Leprosy is an infectious disease of prevalence still high in endemic areas in Brazil. The neurological presentation depends on the involved nerve and is usually associated with skin lesions and the formation of multiple abscesses. We present a case of isolated tuberculoid leprosy, discuss the occurrence, the differential diagnosis and the treatment of this rare presentation and reaffirm the importance of considering leprosy in the differential diagnosis of patients with polyneuropathy or nerve enlargement with no skin lesions.
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Affiliation(s)
- R S Martins
- Department of Neurosurgery, Department of Neurology, Hospital Santa Marcelina, São Paulo, SP, Brasil.
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Abstract
OBJECTIVE: To determine ASO titer profile by establishing ARF differential diagnoses of other diseases with high levels of ASO antibodies. METHODS: We investigated 78 patients with ARF at onset and follow-up, 22 with isolated chorea at onset, 45 with recurrent oropharyngeal tonsillitis, and 23 with recent flare of juvenile idiopathic arthritis. We tested ASO with automated particle-enhanced immunonephelometric assay (Behring(R)-Germany). The ASO (IU/ml) titers were assessed at the following time intervals: 0-7 days, 1-2 weeks, 2-4 weeks, 1-2 months, 2-4 months, 4-6 months, 6-12 months, 1-2 years, 2-3 years, 3-4 years, and 4-5 years after onset of ARF. RESULTS: ASO titers in patients diagnosed with ARF had a significant increase up to the 2-4-month time interval (P<0.0001). Baseline levels were observed afterwards in patients under regular penicillin prophylaxis. The levels of ASO in ARF were also significantly higher than in patients with isolated chorea, recurrent oropharyngeal infections or juvenile idiopathic arthritis (P=0.0025), when age-matched samples of these groups were compared. The testacute;s sensitivity was 73.3% and the specificity was 57.6%, and it was calculated taking into account the upper limit of normality at 320 IU/ml, as well as the established diagnosis of ARF. The testacute;s specificity and positive predictive value increased with rising or higher titers, being higher with titers above 960 UI/ml. CONCLUSION: This reappraisal of ASO profile in ARF patients indicates a remarkable response during the acute phase, and that points to the extent to which ASO levels may differentiate ARF from other diseases with high levels of ASO antibodies, as coincidental but unrelated streptococcal infection or chronic arthritis flareup.
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Affiliation(s)
- C S Machado
- Faculdade de Medicina de Botucatu, SP, Brazil
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20
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Aguiar PH, Bor-Seng-Shu E, Gomes-Pinto F, Almeida- Leme RJ, Freitas AB, Martins RS, Nakagawa ES, Tedesco-Marchese AJ. Surgical management of Guyon's canal syndrome, an ulnar nerve entrapment at the wrist: report of two cases. Arq Neuropsiquiatr 2001; 59:106-11. [PMID: 11299442 DOI: 10.1590/s0004-282x2001000100022] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Guyon's canal syndrome, an ulnar nerve entrapment at the wrist, is a well-recognized entity. The most common causes that involve the ulnar nerve at the wrist are compression from a ganglion, occupational traumatic neuritis, a musculotendinous arch and disease of the ulnar artery. We describe two cases of Guyon's canal syndrome and discuss the anatomy, aetiology, clinical features, anatomical classification, diagnostic criteria and treatment. It is emphasized that the knowledge of both the surgical technique and anatomy is very important for a satisfactory surgical result.
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Affiliation(s)
- P H Aguiar
- Peripheral Nerve Group, Division of Neurosurgery, Medical School, São Paulo University, São Paulo, Brazil.
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Mullins DW, Martins RS, Burger CJ, Elgert KD. Tumor cell-derived TGF-beta and IL-10 dysregulate paclitaxel-induced macrophage activation. J Leukoc Biol 2001; 69:129-37. [PMID: 11200057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
Paclitaxel (TAXOL) activates in vitro macrophage (Mø) expression of proinflammatory and cytotoxic mediators, including IL-12, tumor necrosis factor alpha (TNF-alpha), and nitric oxide (NO). However, tumors dysregulate Mø through soluble suppressor molecules, and it is possible that tumors evade paclitaxel-mediated immune effector function through the production of immunomodulatory molecules and inhibition of Mø function in situ. Because Mø activation in the tumor microenviroment is a desirable goal of anti-tumor immunotherapy, we evaluated whether tumor-derived immunomodulatory factors dysregulate paclitaxel-mediated Mø activation. Tumor cell-derived supernatant suppressed paclitaxel's capacity to induce IL-12, TNF-alpha, and NO production by RAW264.7 Mø. Tumor factors also dysregulated paclitaxel-induced expression of a HIV-LTR, promoter-driven luciferase construct in RAW264.7 Mø, suggesting that tumors may inhibit a broad range of Mø functionality. Depletion studies revealed that IL-10 and transforming growth factor-beta1 (TGF-beta1), but not prostaglandin E2 (PGE2), impaired paclitaxel-mediated activation, suggesting that abrogation of these factors in situ might restore paclitaxel's activating capacity and enhance anti-tumor efficacy.
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Affiliation(s)
- D W Mullins
- Department of Biology, Virginia Polytechnic Institute and State University, Blacksburg 24061-0406, USA.
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Abstract
Intraspinal dermoid tumor and diastematomyelia is a rare combination of pathologies and only eight cases were priorly published. We report a new case in an adult with clinical presentation of progressive paresis and sensitive deficit in the lower limbs, associated with a thoraco-lombar kyphoscoliosis. The diagnosis based on the CT scan and MR images was confirmed at surgery. Pathophysiologic and clinical aspects as well as the radiological characteristics of these pathologies are dicussed and the importance of the early diagnosis is emphasized.
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Affiliation(s)
- R S Martins
- Centro Integrado de Neurocirurgia, Hospital Beneficência Portuguesa, São Paulo, SP, Brasil
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Abstract
PURPOSE To evaluate and the long term course of patients with lupus nephritis, METHOD Thirty seven patients with lupus nephritis followed in a referral, tertiary care center of a developing country (Brazil) were studied. The length of follow up was 52.4 + 13.3 months and mean age was 26.05 + 11.12 years. 84% of the patients were females and class IV nephritis was found to be the most frequent (80%). RESULTS At the time of renal biopsy mean serum creatinine was 1.74 + 1.15 mg/dl, and 24 h-proteinuria was 2.62 + 2.89 g. Fifty one per cent of the patients with elevated serum creatinine showed a decrease in these values. Of the variables studied (age, sex, proteinuria, presence of hypertension and serum creatinine at biopsy), serum creatinine elevation was the only one to be associated with poorer prognosis. Remission of the nephrotic syndrome occurred in 65% of the patients. Actuarial survival rate was 96% at 1 year, 82% at 5 years, 70% at 10 years and 70% at 12 years. Five patients developed end stage renal failure and 7 died. Infection was the most frequent(57%) cause of death. CONCLUSION Among several factors studied the only which has been associated with chronic renal failure was elevated serum creatinine at the time of biopsy. Infections were the main cause of death.
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Affiliation(s)
- R S Martins
- Departamento de Clínica Médica da Faculdade de Medicina, Universidade Estadual de São Paulo
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Fujimoto Y, Aguiar PH, Carneiro JD, Martins RS, Ciquini O, de Andrade AF, Manreza LA. Spontaneous epidural hematoma following a shunt in an infant with congenital factor X deficiency. Case report and literature review. Neurosurg Rev 1999; 22:226-9. [PMID: 10682933 DOI: 10.1007/s101430050022] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The authors describe a case of an infant with congenital factor X deficiency. The patient presented with a central nervous system hemorrhage followed by hydrocephalus. He underwent a ventriculoperitoneal shunt and, during the postoperative period, developed a spontaneous epidural hematoma, which was evacuated. The clinical and pathophysiological aspects of this case are discussed based on a literature review.
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Affiliation(s)
- Y Fujimoto
- University of São Paulo School of Medicine, Brazil
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Martins RS, Suzuki SH, Sanematsu Júnior P, Plese JP. [Acoustic neuroma in children without association with neurofibromatosis. Report of 2 cases]. Arq Neuro-Psiquiatr 1999; 57:96-100. [PMID: 10347733 DOI: 10.1590/s0004-282x1999000100019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Acoustic schwannoma is the most common tumor of the cerebellopontine angle in adults and is rarely found in children without neurofibromatosis. In the literature there are 18 children under the age of 16 with such tumor. Two female patients with age of 9 and 15 years old with acoustic schwannoma without neurofibromatosis are related. Progressive deafness followed by signs and symptoms of a posterior fossa tumor were the initial complaint of both, as well as of the other related cases and in adulthood.
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Affiliation(s)
- R S Martins
- Departamento de Neurocirurgia, Hospital do Câncer, Fundação Antônio Pruderte, São Paulo, Brasil
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Martins RS, Martinez J, de Aguiar PH, Nakagawa E, Tedesco-Marchese JA. [Intraneural synovial cyst of the peroneal nerve. Case report]. Arq Neuropsiquiatr 1997; 55:831-3. [PMID: 9629345 DOI: 10.1590/s0004-282x1997000500022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The authors report the case of an intraneural synovial cyst of the peroneal nerve. The initial symptom was pain and weakness of dorsiflexion and eversion of the right foot. The patient was operated on and the cyst was totally resected. The authors discuss the pathogenesis, clinical diagnosis as well as the treatment of that uncommon lesion.
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Affiliation(s)
- R S Martins
- Departamento de Neurologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (FMUSP), Brasil
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Martins RS, Ciquini Júnior O, Matushita H, Plese JP. [Lipoma of the corpus callosum with extracranial extension through frontal bone defect]. Arq Neuropsiquiatr 1995; 53:671-5. [PMID: 8585830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Intracranial lipoma are usually localized in the corpus callosum and rarely extends to the subgaleal region. Only eight cases of lipoma of the corpus callosum with extracranial extension were reported in the literature. Seizures and mental retardation were the most common clinical findings in these patients. Data from the literature show that resection of intracranial lipoma has catastrophic results. The resection must be restricted to the extracranial portion. We report a child with lipoma of the corpus callosum with extracranial extension with no neurologic deficit submitted to resection of the extracranial extension.
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Affiliation(s)
- R S Martins
- Departamento de Neurologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (FMUSP), Brasil
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