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1.
J Environ Manage ; 348: 119141, 2023 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-37832292

RESUMO

This study provides new insights into the relation between the size of the territorial units for which the provision of waste services is entrusted to external operators and their efficiency. The need for a deeper investigation of this relation arises from the fact that on the one hand, the European Union is pushing its Member States towards the adoption of laws aimed at ensuring competition for the market whenever competition in the market is possible; on the other, both the theoretical and the empirical literature cautions policymakers against the risks associated with contracting out. This problem is addressed here through an efficiency analysis of Italian municipalities in the organization of waste services. The stochastic frontier analysis (SFA) is applied to estimate efficiency scores for the municipalities. Then, a regression analysis is carried out to investigate the relation between the efficiency scores and the size of the municipality. This analysis has been carried out using data on a sample of 6,916 Italian municipalities (87.39% of the entire population) for the year 2019. The method adopted here can also support regulatory authorities in defining the size of the territorial units in which other types of local public service should be outsourced.


Assuntos
Serviços Terceirizados , Eliminação de Resíduos , Gerenciamento de Resíduos , Eficiência , União Europeia , Itália , Cidades , Resíduos Sólidos
2.
Braz J Anesthesiol ; 72(1): 49-54, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34118259

RESUMO

BACKGROUND AND OBJECTIVES: Inguinal hernia repair is associated with significant postoperative pain. We assessed the analgesia efficacy of unilateral Erector Spinae Plane block (ESP) performed under ultrasound guidance in patients submitted to open unilateral inguinal hernia repair, comparing ESP to spinal anesthesia administered with or without opioid. METHODS: Forty-five patients with ages ranging from 27 to 83 years were randomly allocated into three groups: control group receiving spinal anesthesia (n = 14), ESP group receiving ESP block combined with spinal anesthesia (n = 16), and spinal morphine group receiving spinal anesthesia with morphine 1 mcg.kg-1 as adjuvant drug (n = 15). ESP was performed at the T8 level using 0.5% ropivacaine, 20 mL. We assessed the pain intensity in the initial 24 hours after surgery using the Visual Analogue Scale - VAS and rescue opioid requirement. RESULTS: The ESP group showed four times higher consumption of rescue opioids than the spinal morphine group, or 26.7% vs. 6.2%, respectively (RR = 4.01; 95% CI: 0.82 to 19.42; p = 0.048). The spinal morphine group showed higher incidence of adverse effects than the ESP group, 37.5% vs. 6.7%, respectively (p = 0.039). There were no statistically significant differences among groups for the mean values of VAS score at 24 hours after surgery (p = 0.304). CONCLUSION: At the doses used in this study, the ESP block was an ineffective technique for providing postoperative analgesia in unilateral open inguinal hernioplasty and was associated with higher consumption of rescue opioids when compared to spinal anesthesia with or without opioid.


Assuntos
Hérnia Inguinal , Bloqueio Nervoso , Adulto , Idoso , Idoso de 80 Anos ou mais , Analgésicos Opioides , Hérnia Inguinal/cirurgia , Humanos , Pessoa de Meia-Idade , Morfina , Bloqueio Nervoso/métodos , Dor Pós-Operatória/etiologia , Dor Pós-Operatória/prevenção & controle , Ultrassonografia de Intervenção/métodos
3.
Biom J ; 62(6): 1494-1507, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32285502

RESUMO

Maximum likelihood estimation of the model parameters for a spatial population based on data collected from a survey sample is usually straightforward when sampling and non-response are both non-informative, since the model can then usually be fitted using the available sample data, and no allowance is necessary for the fact that only a part of the population has been observed. Although for many regression models this naive strategy yields consistent estimates, this is not the case for some models, such as spatial auto-regressive models. In this paper, we show that for a broad class of such models, a maximum marginal likelihood approach that uses both sample and population data leads to more efficient estimates since it uses spatial information from sampled as well as non-sampled units. Extensive simulation experiments based on two well-known data sets are used to assess the impact of the spatial sampling design, the auto-correlation parameter and the sample size on the performance of this approach. When compared to some widely used methods that use only sample data, the results from these experiments show that the maximum marginal likelihood approach is much more precise.


Assuntos
Modelos Estatísticos , Análise Espacial , Simulação por Computador , Humanos , Funções Verossimilhança
4.
Braz J Anesthesiol ; 70(1): 22-27, 2020.
Artigo em Português | MEDLINE | ID: mdl-32171499

RESUMO

INTRODUCTION AND OBJECTIVES: Blockade of the Erector Spinal Muscle (ESP block) is a relatively new block, initially described for chronic thoracic pain analgesia, but it has already been described for anesthesia and analgesia in thoracic surgical procedures and, more recently, for high abdominal surgeries. The aim of the study was to compare two techniques, ESP Block and Epidural block with morphine and local anesthetic for postoperative analgesia of open cholecystectomy surgeries. METHODS: Controlled single-blind randomized clinical trial with 31 patients (ESP block, n = 15; Epidural, n = 16), of both genders, ages between 27 and 77 years. The ESP block was performed at the T8 level with injection of 20 mL of 0.5% ropivacaine bilaterally. The epidural block was performed at the T8-T9 space with 20 mL of 0.5% ropivacaine and 1 mg of morphine. RESULTS: The ESP block group presented higher mean Numeric Pain Scale (NPS) values for pain in the up to 2 hour (p = 0.001) and in the 24 hour (p = 0.001) assessments. The ESP block group had a three-fold increased risk (43.7% vs. 13.3%) of rescue opioid use in the 24 postoperative hours when compared to the epidural group (RR = 3.72, 95% CI: 0.91 to 15.31, p = 0.046). CONCLUSION: ESP block did not prove to be an effective technique for postoperative analgesia of open cholecystectomy, at the doses performed in this study, having required more use of rescue opioid, and without differences in NPS. More comprehensive studies are required to assess the efficacy of ESP block for the visceral and abdominal somatic component, considering the specific blockade level.


Assuntos
Analgesia/métodos , Colecistectomia , Bloqueio Nervoso/métodos , Dor Pós-Operatória/terapia , Adulto , Idoso , Analgesia Epidural , Músculos do Dorso/inervação , Colecistectomia/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Método Simples-Cego
5.
Rev. bras. anestesiol ; 70(1): 22-27, Jan.-Feb. 2020. tab, graf
Artigo em Inglês, Português | LILACS | ID: biblio-1137130

RESUMO

Abstract Introduction and objectives: Blockade of the Erector Spinal Muscle (ESP Block) is a relatively new block, initially described for chronic thoracic pain analgesia, but it has already been described for anesthesia and analgesia in thoracic surgical procedures and, more recently, for high abdominal surgeries. The aim of the study was to compare two techniques, ESP Block and Epidural Block, with morphine and local anesthetic for postoperative analgesia of open cholecystectomy surgeries. Methods: Controlled single-blind randomized clinical trial with 31 patients (ESP Block, n = 15; Epidural, n = 16), of both genders, ages between 27 and 77 years. The ESP block was performed at the T8 level with injection of 20 mL of 0.5% ropivacaine bilaterally. The epidural block was performed at the T8-T9 space with 20 mL of 0.5% ropivacaine and 1 mg of morphine. Results: The ESP Block group presented higher mean ​​Numeric Pain Scale (NPS) values for pain in the up to 2 hour (p = 0.001) and in the 24 hour (p = 0.001) assessments. The ESP Block group had a three-fold increased risk (43.7% vs. 13.3%) of rescue opioid use in the 24 postoperative hours when compared to the epidural group (RR = 3.72, 95% CI: 0.91 to 15.31, p = 0.046). Conclusion: ESP Block did not prove to be an effective technique for postoperative analgesia of open cholecystectomy, at the doses performed in this study, having required more use of rescue opioid, and without differences in NPS. More comprehensive studies are required to assess the efficacy of ESP block for the visceral and abdominal somatic component, considering the specific blockade level.


Resumo Justificativa e objetivo: O Bloqueio do Plano do Músculo Eretor da Espinha (ESP block) é um bloqueio relativamente novo, inicialmente descrito para analgesia de dor torácica crônica, porém já descrito para anestesia e analgesia em procedimentos cirúrgicos torácicos e, mais recentemente, para cirurgias abdominais altas. O estudo objetivou comparar as técnicas de bloqueio ESP e bloqueio Epidural com morfina e anestésico local para analgesia pós-operatória de cirurgias de colecistectomia aberta. Método: Estudo clínico randomizado controlado, unicego com 31 pacientes (ESP block, n = 15; Epidural, n = 16), de ambos os sexos, idades entre 27 e 77 anos. O ESP block foi realizado no nível de T8 com injeção de 20 mL de ropivacaína 0,5% bilateral. O bloqueio Epidural foi realizado no espaço T8-T9 com 20 mL de ropivacaína 0,5% e 1 mg de morfina. Resultados: O grupo ESP block apresentou valores médios de dor pela Escala Visual Numérica (EVN) maiores nas avaliações até 2 horas (p= 0,001) e em 24 horas (p= 0,001). O grupo ESP block apresentou um risco três vezes maior - 43,7%vs.13,3% - de uso de opioide de resgate em 24 horas pós-operatórias do que o grupo epidural (RR = 3,72; 95% IC 0,91 a 15,31; p= 0,046). Conclusão: Nas doses realizadas nesse estudo, o ESP block não se mostrou uma técnica efetiva para analgesia pós-operatória de colecistectomia aberta, com mais uso de opioide de resgate e sem diferenças na escala visual numérica de dor. Necessita-se de estudos mais abrangentes avaliando a eficácia do ESP block para o componente visceral e somático abdominal, considerando o nível do bloqueio específico.


Assuntos
Humanos , Masculino , Feminino , Adulto , Idoso , Dor Pós-Operatória/terapia , Colecistectomia/métodos , Analgesia/métodos , Bloqueio Nervoso/métodos , Analgesia Epidural , Método Simples-Cego , Músculos do Dorso/inervação , Pessoa de Meia-Idade
6.
Artigo em Inglês | MEDLINE | ID: mdl-28680703

RESUMO

BACKGROUND: Intravitreal injection (IVI) is a very common vitreoretinal procedure, and multiple injections are often required per patient. This systematic review was conducted to evaluate the effectiveness of various local anesthetic techniques in reducing pain during injection. METHODS: A systematic review was conducted based on searches of Cochrane, LILACS, PubMed, Scopus, Web of Science, and the gray literature (Google Scholar). The end search date was February 19, 2016, across all databases. We classified pain by converting visual analog scale (VAS) scores (0-100 mm) into Jensen's classification levels: 0-4, no pain; 5-44, mild pain; 45-74, moderate pain; and 75-100, severe pain. An intervention was considered clinically significant when pain score change was >12 mm on a 100-mm scale. RESULTS: Eight studies out of 23 met the eligibility criteria. The total number of patients was 847. Most studies (5/8 [62.5%]) were at unclear risk of bias because of unclear randomization, thus providing only moderate evidence to this review. The anesthetic techniques included eye drops with proparacaine, tetracaine or cocaine, a lidocaine pledget or gel, and subconjunctival injection of 2% lidocaine or 0.75% levobupivacaine. No study comprised all of the techniques. Pain was mild (VAS scores, 5-44 mm) regardless of anesthetic technique. A clinically significant intervention (pain score change >12 mm) was found for only one study comparing proparacaine drops, lidocaine gel, and subconjunctival lidocaine; in that study, a subconjunctival injection of 2% lidocaine provided the greatest pain reduction. A meta-analysis was not possible due to study heterogeneity. CONCLUSIONS: Patient pain during IVI under topical anesthesia is mild regardless of anesthetic technique. A subconjunctival injection of 2% lidocaine could be an option for highly sensitive patients. However, with moderate level of evidence, no single anesthetic technique could be defined as the best option for IVI.

7.
Biom J ; 59(5): 1067-1084, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-28508431

RESUMO

The units observed in a biological, agricultural, and environmental survey are often randomly selected from a finite population whose main feature is to be geo-referenced thus its spatial distribution should be used as essential information in designing the sample. In particular our interest is focused on probability samples that are well spread over the population in every dimension which in recent literature are defined as spatially balanced samples. To approach the problem we used the within sample distance as the summary index of the spatial distribution of a random selection criterion. Moreover numerical comparisons are made between the relative efficiency, measured with respect to the simple random sampling, of the suggested design and some other classical solutions as the Generalized Random Tessellation Stratified (GRTS) design used by the US Environmental Protection Agency (EPA) and other balanced or spatially balanced selection procedures as the Spatially Correlated Poisson Sampling (SCPS), the balanced sampling (CUBE), and the Local Pivotal method (LPM). These experiments on real and simulated data show that the design based on the within sample distance selects samples with a better spatial balance thus gives estimates with a lower sampling error than those obtained by using the other methods. The suggested method is very flexible to the introduction of stratification and coordination of samples and, even if in its nature it is computationally intensive, it is shown to be a suitable solution even when dealing with high sampling rates and large population frames where the main problem arises from the size of the distance matrix.


Assuntos
Biometria/métodos , Modelos Estatísticos , Simulação por Computador , Funções Verossimilhança , Probabilidade , Estudos de Amostragem , Análise Espacial , Estados Unidos
8.
Rev. bras. anestesiol ; 66(6): 637-641, Nov.-Dec. 2016.
Artigo em Inglês | LILACS | ID: biblio-829720

RESUMO

Abstract Background and objectives: Jehovah's Witnesses patients refuse blood transfusions for religious reasons. Anesthesiologists must master specific legal knowledge to provide care to these patients. Understanding how the Law and the Federal Council of Medicine treat this issue is critical to know how to act in this context. The aim of this paper was to establish a treatment protocol for the Jehovah's Witness patient with emphasis on ethical and legal duty of the anesthesiologist. Content: The article analyzes the Constitution, Criminal Code, resolutions of the Federal Council of Medicine, opinions, and jurisprudence to understand the limits of the conflict between the autonomy of will of Jehovah's Witnesses to refuse transfusion and the physician's duty to provide the transfusion. Based on this evidence, a care protocol is suggested. Conclusions: The Federal Council of Medicine resolution 1021/1980, the penal code Article 135, which classifies denial of care as a crime and the Supreme Court decision on the HC 268,459/SP process imposes on the physician the obligation of blood transfusion when life is threatened. The patient's or guardian's consent is not necessary, as the autonomy of will manifestation of the Jehovah's Witness patient refusing blood transfusion for himself and relatives, even in emergencies, is no not forbidden.


Resumo Justificativa e objetivos: Os pacientes testemunhas de Jeová recusam transfusão sanguínea por motivos religiosos. O anestesiologista deve dominar conhecimentos jurídicos específicos para atender esses pacientes. Entender como o direito e o Conselho Federal de Medicina tratam essa questão é fundamental para saber agir dentro desse contexto. O objetivo deste artigo foi estabelecer um protocolo de atendimento do paciente testemunha de Jeová com ênfase no dever ético e legal do anestesiologista. Conteúdo: O artigo analisa a Constituição, o Código Penal, resoluções do Conselho Federal de Medicina (CFM), pareceres e jurisprudência para entender os limites do conflito entre a autonomia de vontade da testemunha de Jeová em recusar transfusão e a obrigação do médico em transfundir. Baseado nessas evidências um protocolo de atendimento é sugerido. Conclusões: A resolução do CFM 1021/1980, o Código Penal no artigo 135, que classifica como crime a omissão de socorro, e a decisão do Supremo Tribunal de Justiça sobre o processo HC 268.459/SP impõem ao médico a obrigação de transfusão quando houver risco de vida. Não é necessário concordância do paciente ou de seu responsável, pois não é proibida a manifestação de vontade do paciente testemunha de Jeová ao recusar transfusão sanguínea para si e seus dependentes, mesmo em emergências.


Assuntos
Humanos , Testemunhas de Jeová , Anestesiologistas/legislação & jurisprudência , Anestesiologistas/ética , Anestesia/ética , Anestesiologia/legislação & jurisprudência , Anestesiologia/ética , Transfusão de Sangue , Autonomia Pessoal , Ética Médica , Cuidados Intraoperatórios/educação , Cuidados Intraoperatórios/legislação & jurisprudência , Legislação Médica
9.
Braz J Anesthesiol ; 66(6): 637-641, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27793239

RESUMO

BACKGROUND AND OBJECTIVES: Jehovah's Witnesses patients refuse blood transfusions for religious reasons. Anesthesiologists must master specific legal knowledge to provide care to these patients. Understanding how the Law and the Federal Council of Medicine treat this issue is critical to know how to act in this context. The aim of this paper was to establish a treatment protocol for the Jehovah's Witness patient with emphasis on ethical and legal duty of the anesthesiologist. CONTENT: The article analyzes the Constitution, Criminal Code, resolutions of the Federal Council of Medicine, opinions, and jurisprudence to understand the limits of the conflict between the autonomy of will of Jehovah's Witnesses to refuse transfusion and the physician's duty to provide the transfusion. Based on this evidence, a care protocol is suggested. CONCLUSIONS: The Federal Council of Medicine resolution 1021/1980, the penal code Article 135, which classifies denial of care as a crime and the Supreme Court decision on the HC 268,459/SP process imposes on the physician the obligation of blood transfusion when life is threatened. The patient's or guardian's consent is not necessary, as the autonomy of will manifestation of the Jehovah's Witness patient refusing blood transfusion for himself and relatives, even in emergencies, is no not forbidden.


Assuntos
Anestesia/ética , Anestesiologistas/ética , Anestesiologistas/legislação & jurisprudência , Anestesiologia/ética , Anestesiologia/legislação & jurisprudência , Testemunhas de Jeová , Transfusão de Sangue , Ética Médica , Humanos , Cuidados Intraoperatórios/educação , Cuidados Intraoperatórios/legislação & jurisprudência , Legislação Médica , Autonomia Pessoal
10.
Rev Bras Anestesiol ; 66(6): 637-641, 2016.
Artigo em Português | MEDLINE | ID: mdl-27016188

RESUMO

BACKGROUND AND OBJECTIVES: Jehovah's Witnesses patients refuse blood transfusions for religious reasons. Anesthesiologists must master specific legal knowledge to provide care to these patients. Understanding how the Law and the Federal Council of Medicine treat this issue is critical to know how to act in this context. The aim of this paper was to establish a treatment protocol for the Jehovah's Witness patient with emphasis on ethical and legal duty of the anesthesiologist. CONTENT: The article analyzes the Constitution, Criminal Code, resolutions of the Federal Council of Medicine (FCM), opinions, and jurisprudence to understand the limits of the conflict between the autonomy of will of Jehovah's Witnesses to refuse transfusion and the physician's duty to provide the transfusion. Based on this evidence, a care protocol is suggested. CONCLUSIONS: The FCM resolution 1021/1980, the penal code Article 135, which classifies denial of care as a crime and the Supreme Court decision on the HC 268,459/SP process imposes on the physician the obligation of blood transfusion when life is threatened. The patient's or guardian's consent is not necessary, as the autonomy of will manifestation of the Jehovah's Witness patient refusing blood transfusion for himself and relatives, even in emergencies, is no not forbidden.

11.
J Pharmacol Exp Ther ; 354(3): 251-60, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26085652

RESUMO

Kv3.1 and Kv3.2 high voltage-activated potassium channels, which display fast activation and deactivation kinetics, are known to make a crucial contribution to the fast-spiking phenotype of certain neurons. Pharmacological experiments show that the blockade of native Kv3 currents with low concentrations of tetraethylammonium or 4-aminopyridine impairs the expression of this firing phenotype. In particular, Kv3 channels are highly expressed by fast-spiking, parvalbumin-positive interneurons in corticolimbic brain circuits, which modulate the synchronization of cortical circuits and the generation of brain rhythms. Here, we describe a novel small molecule, (5R)-5-ethyl-3-(6-{[4-methyl-3-(methyloxy)phenyl]oxy}-3-pyridinyl)-2,4-imidazolidinedione (AUT1), which modulates Kv3.1 and Kv3.2 channels in human recombinant and rodent native neurons. AUT1 increased whole currents mediated by human Kv3.1b and Kv3.2a channels, with a concomitant leftward shift in the voltage dependence of activation. A less potent effect was observed on hKv3.3 currents. In mouse somatosensory cortex slices in vitro, AUT1 rescued the fast-spiking phenotype of parvalbumin-positive-fast-spiking interneurons following an impairment of their firing capacity by blocking a proportion of Kv3 channels with a low concentration of tetraethylammonium. Notably, AUT1 had no effect on interneuron firing when applied alone. Together, these data confirm the role played by Kv3 channels in the regulation of the firing phenotype of somatosensory interneurons and suggest that AUT1 and other Kv3 modulators could represent a new and promising therapeutic approach to the treatment of disorders associated with dysfunction of inhibitory feedback in corticolimbic circuits, such as schizophrenia.


Assuntos
Interneurônios/efeitos dos fármacos , Interneurônios/metabolismo , Parvalbuminas/metabolismo , Canais de Potássio Shaw/metabolismo , Bibliotecas de Moléculas Pequenas/farmacologia , Potenciais de Ação/efeitos dos fármacos , Potenciais de Ação/fisiologia , Animais , Células CHO , Linhagem Celular , Cricetulus , Humanos , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Transgênicos , Proteínas Recombinantes/metabolismo , Córtex Somatossensorial/efeitos dos fármacos , Córtex Somatossensorial/metabolismo , Tetraetilamônio/farmacologia
13.
J Med Chem ; 53(13): 4989-5001, 2010 Jul 08.
Artigo em Inglês | MEDLINE | ID: mdl-20527970

RESUMO

A pharmacophore model for triple reuptake inhibitors and the new class of 1-(aryl)-6-[alkoxyalkyl]-3-azabicyclo[3.1.0]hexanes were recently reported. Further investigation in this area led to the identification of a new series of potent and selective triple reuptake inhibitors endowed with good developability characteristics. Excellent bioavailability and brain penetration are associated with this series of 6-(3,4-dichlorophenyl)-1-[(methyloxy)methyl]-3-azabicyclo[4.1.0]heptanes together with high in vitro potency and selectivity at SERT, NET, and DAT. In vivo microdialysis experiments in different animal models and receptor occupancy studies in rat confirmed that derivative 17 showed an appropriate profile to guarantee further progression of the compound.


Assuntos
Transtorno Depressivo/tratamento farmacológico , Heptanos/química , Heptanos/farmacologia , Inibidores da Captação de Neurotransmissores/química , Inibidores da Captação de Neurotransmissores/farmacologia , Animais , Antidepressivos/síntese química , Antidepressivos/química , Antidepressivos/farmacologia , Compostos Azabicíclicos/síntese química , Compostos Azabicíclicos/química , Compostos Azabicíclicos/farmacologia , Encéfalo/metabolismo , Transtorno Depressivo/metabolismo , Dopamina/metabolismo , Heptanos/síntese química , Humanos , Espectroscopia de Ressonância Magnética , Masculino , Espectrometria de Massas , Camundongos , Microdiálise , Modelos Moleculares , Inibidores da Captação de Neurotransmissores/síntese química , Norepinefrina/metabolismo , Ratos , Ratos Sprague-Dawley , Serotonina/metabolismo , Relação Estrutura-Atividade
14.
J Med Chem ; 53(6): 2534-51, 2010 Mar 25.
Artigo em Inglês | MEDLINE | ID: mdl-20170186

RESUMO

The discovery of new highly potent and selective triple reuptake inhibitors is reported. The new classes of 1-(aryl)-6-[alkoxyalkyl]-3-azabicyclo[3.1.0]hexanes and 6-(aryl)-6-[alkoxyalkyl]-3-azabicyclo[3.1.0]hexanes are described together with detailed SAR. Appropriate decoration of the scaffolds was achieved with the help of a triple reuptake inhibitor pharmacophore model detailed here. Selected derivatives showed good oral bioavailability (>30%) and brain penetration (B/B > 4) in rats associated with high in vitro potency and selectivity at SERT, NET, and DAT. Among these compounds, microdialysis and in vivo experiments confirm that derivative 15 has an appropriate developability profile to be considered for further progression.


Assuntos
Compostos Azabicíclicos/farmacologia , Proteínas da Membrana Plasmática de Transporte de Dopamina/antagonistas & inibidores , Proteínas da Membrana Plasmática de Transporte de Norepinefrina/antagonistas & inibidores , Proteínas da Membrana Plasmática de Transporte de Serotonina/metabolismo , Animais , Compostos Azabicíclicos/química , Compostos Azabicíclicos/farmacocinética , Ligação Competitiva , Monoaminas Biogênicas/metabolismo , Disponibilidade Biológica , Transporte Biológico/efeitos dos fármacos , Linhagem Celular , Cromatografia Líquida de Alta Pressão , Inibidores das Enzimas do Citocromo P-450 , Sistema Enzimático do Citocromo P-450/metabolismo , Proteínas da Membrana Plasmática de Transporte de Dopamina/metabolismo , Humanos , Masculino , Camundongos , Microdiálise , Microssomos Hepáticos/metabolismo , Modelos Químicos , Estrutura Molecular , Atividade Motora/efeitos dos fármacos , Proteínas da Membrana Plasmática de Transporte de Norepinefrina/metabolismo , Córtex Pré-Frontal/metabolismo , Ratos , Relação Estrutura-Atividade
16.
ChemMedChem ; 2(4): 528-40, 2007 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-17335099

RESUMO

Two new classes of potent and selective CRF(1) receptor antagonists are presented. Exploration of general templates 3 and 4 through modifications of the top amine and bottom phenyl substituents led to optimization of the in vitro affinity and pharmacokinetic profiles. The typical alkyl chains present in the top region of CRF(1) antagonists were replaced by substituted heteroaryl moieties, leading to a dramatic improvement of the metabolic stability. This improvement was apparent when the compounds were dosed in vivo: several compounds exhibited low plasma clearance, good oral bioavailability, and high brain penetration. As a consequence of their outstanding pharmacokinetic profiles, these CRF(1) antagonists, as exemplified by compound 4 fi (4-(4-bromo-3-methyl-1H-pyrazol-1-yl)-7-(2,4-dichlorophenyl)-2-methyl-6,7-dihydro-5H-pyrrolo[2,3-d]pyrimidine), produced a dose-dependent "anxiolytic-like" effect when administered orally, decreasing the vocalization of rat pups.


Assuntos
Pirimidinas/química , Pirimidinas/farmacologia , Receptores de Hormônio Liberador da Corticotropina/antagonistas & inibidores , Animais , Ansiolíticos/química , Ansiolíticos/farmacologia , Relação Dose-Resposta a Droga , Microssomos Hepáticos/metabolismo , Modelos Moleculares , Estrutura Molecular , Ligação Proteica , Pirimidinas/metabolismo , Ratos , Ratos Sprague-Dawley , Relação Estrutura-Atividade , Vocalização Animal/efeitos dos fármacos
17.
ACM arq. catarin. med ; 33(1): 20-23, jan.-mar. 2004. tab
Artigo em Português | LILACS | ID: lil-451349

RESUMO

Justificativa e Objetivos: a peridural torácica é colocada como uma técnica que, apesar de não ser isenta de complicações, parece poder substituir com segurança ecustos menores a anestesia geral nos procedimentos cirúrgicos sobre a parede torácica e/ou abdominal. Método: 176 pacientes do sexo feminino, com idade entre 14 e 72 anos que foram submetidos a cirurgias da parede torácica e/ou abdominal foram anestesiados com peridural torácica. A droga utilizada foi a bupivacaina 0,5% na dose de 100mg (20 ml), com o paciente posicionado em decúbito lateral e punção entre T8 e T9. Os pacientesforam todos monitorizados, e tiveram registrado todos osdados de pressão, oxigenação e outros. As complicações ocorridas foram compiladas e analisadas estatisticamente. A hidratação prévia, sedação e posicionamento dospacientes para a cirurgia foram igualmente padronizados. Resultados: não houve a ocorrência de complicações graves ou de difícil tratamento, o achado mais freqüente foi à hipotensão que ocorreu em 5,82% dos pacientes, seguida da bradicardia e falha de bloqueio (2,91% cada). Ocorreu, ainda, hipotensão associada a bradicardia, bloqueio baixo demais, bloqueio parcial, convulsões, broncoespasmo, alergia Técnica anestésica regional: peridural torácica...


Assuntos
Humanos , Feminino , Adolescente , Adulto , Pessoa de Meia-Idade , Parede Abdominal , Anestesia por Condução , Anestesia Epidural , Cirurgia Torácica , Parede Torácica , Técnicas de Diagnóstico por Cirurgia
18.
Farmaco ; 59(3): 175-83, 2004 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-14987980

RESUMO

Following the recent disclosure of 3-methyl pyrrole-2,4-dicarboxylic acid 2-propyl ester 4-(1,2,2-trimethyl-propyl) ester, a potent and selective mGluR1 non-competitive antagonist, we report here a detailed exploration of the C-2 position of this scaffold with the preparation of differently substituted amides. Great improvement of the pharmacokinetic properties has been achieved through this exercise.


Assuntos
Ésteres/síntese química , Ésteres/farmacologia , Pirróis/síntese química , Pirróis/farmacologia , Receptores de Glutamato Metabotrópico/antagonistas & inibidores , Amidas/síntese química , Amidas/farmacocinética , Animais , Azidas/síntese química , Azidas/farmacocinética , Fenômenos Químicos , Físico-Química , Cromatografia Líquida de Alta Pressão , Cromatografia em Camada Fina , Ácidos Hidroxâmicos/síntese química , Ácidos Hidroxâmicos/farmacocinética , Indicadores e Reagentes , Espectroscopia de Ressonância Magnética , Espectrometria de Massas , Camundongos , Conformação Molecular , Ratos , Solubilidade , Espectrofotometria Infravermelho , Relação Estrutura-Atividade
19.
Rev. bras. anestesiol ; 47(3): 226-30, maio-jun. 1997. tab
Artigo em Português | LILACS | ID: lil-198025

RESUMO

Justificativa e objetivos - Correlaçöes entre parâmetros antropométricos e a distância da pele ao espaço peridural têm sido estudadas em diferentes populaçöes de pacientes. O presente estudo teve como objetivo estabelecer coeficientes de correlaçäo e modelos lineares para aplicaçäo clínica entre a distância da pele ao espaço subaracnóideo e os parâmetros peso, altura, índice de massa corporal e índice ponderal, em pacientes masculinos geriátricos. Método - A distância entre a pele e o espaço subaracnóideo foi medida em 100 pacientes masculinos com idades superiores a 60 anos, submetidos a anestesia subaracnóidea e utilizando-se acessos mediano (grupo 1, n=50) e paramediano (grupo 2, n=50). Resultados - Observaram-se distâncias de 54,82 ñ 6,48 mm e 64,02 ñ 7,42 mm respectivamente, sendo a diferença estatisticamente significante. Obtiveram-se coeficientes de correlaçäo significativos entre a distância ao espaço subaracnóideo e os parâmetros estudados, exceto altura, em ambos os grupos. Conclusöes - Embora signifcativos os coeficientes de correlaçäo, os baixos coeficientes de associaçäo (100.r²) tornam sem utilidade prática o uso de equaçöes lineares para predizer a distância da pele ao espaço subaracnóideo a partir dos parâmetros e índices antropométricos utilizados neste estudo, em pacientes geriátricos do sexo masculino


Assuntos
Humanos , Masculino , Pessoa de Meia-Idade , Idoso , Anestesia , Espaço Subaracnóideo
20.
ACM arq. catarin. med ; 18(2): 71-7, abr.-jun. 1989. tab
Artigo em Português | LILACS | ID: lil-79469

RESUMO

Foram analisados os produtuários de 400 pacientes, do Ambulatório de Mastologia do INAMPS - Florianópolis, no período entre setembro de 1985 e outubro de 1987. Foram levantados todos os dados considerados de importância em mastologia, contidos num protocolo pré-estabelecido tais como idade da paciente, menopausa, menarca, da primeira gestaçäo, da primeira lactaçäo, cor, queixas principais, antecedentes familiares de câncer de mama, impressäo clínica e diagnóstico definitivo. Dentre as queixas referidas pelas pacientes, as mais comuns foram dor, nódulo, aumento de volume do nódulo e associaçäo da queixa principal com ciclo menstrual. Em nossa casuística, os diagnósticos definitivos mais freqüentes em ordem foram displasia mamária, fibro-adenoma e câncer de mama. Correlacionaram-se também os diagnósticos com as diferentes faixas etárias, paridade e cor. Compararam-se os dados obtidos com os de literatura


Assuntos
Adolescente , Adulto , Pessoa de Meia-Idade , Humanos , Feminino , Assistência Ambulatorial , Doenças Mamárias , Neoplasias da Mama , Estudos Prospectivos
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