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1.
Int. braz. j. urol ; 44(3): 600-607, May-June 2018. tab, graf
Article in English | LILACS | ID: biblio-954052

ABSTRACT

ABSTRACT Objectives: Apoptosis effect of oral alpha-blockers is known in the prostate. Apoptosis index of silodosin has not been proved, yet. Aims are to present apoptosis index of silodosin in prostate and to compare this with other currently used alpha-blocker's apoptosis indexes together with their clinical effects. Materials and Methods: Benign prostatic hyperplasia (BPH) patients were enrolled among those admitted to urology outpatient clinic between June 2014 and June 2015. Study groups were created according to randomly prescribed oral alpha-blocker drugs as silodosin 8mg (Group 1; n=24), tamsulosin 0.4mg (Group 2; n=30), alfuzosin 10mg (Group 3; n=25), doxazosin 8mg (Group 4; n=22), terazosin 5mg (Group 5; n=15). Pa- tients who refused to use any alpha-blocker drug were included into Group 6 as control group (n=16). We investigated apoptosis indexes of the drugs in prostatic tissues that were taken from patient's surgery (transurethral resection of prostate) and/or prostate biopsies. Immunochemical dyeing, light microscope, and Image Processing and Analy- sis in Java were used for evaluations. Statistical significant p was p<0.05. Results: There were 132 patients with mean follow-up of 4.2±2.1 months. Pathologist researched randomly selected 10 areas in each microscope set. Group 1 showed statisti- cal significant difference apoptosis index in immunochemical TUNEL dyeing and im- age software (p<0.001). Moreover, we determined superior significant development in parameters as uroflowmetry, quality of life scores, and international prostate symptom score in Group 1. Conclusions: Silodosin has higher apoptosis effect than other alpha-blockers in prostate. Thus, clinic improvement with silodosin was proved by histologic studies. Besides, static factor of BPH may be overcome with creating apoptosis.


Subject(s)
Humans , Male , Aged , Aged, 80 and over , Prostate/drug effects , Prostate/pathology , Prostatic Hyperplasia/pathology , Prostatic Hyperplasia/drug therapy , Apoptosis/drug effects , Adrenergic alpha-1 Receptor Antagonists/pharmacology , Quinazolines/pharmacology , Reference Values , Sulfonamides/pharmacology , Time Factors , Biopsy , Prazosin/analogs & derivatives , Prazosin/pharmacology , Immunohistochemistry , Pilot Projects , Retrospective Studies , Treatment Outcome , Prostate-Specific Antigen/blood , Doxazosin/pharmacology , Tamsulosin , Indoles/pharmacology , Middle Aged
2.
Gut and Liver ; : 101-108, 2016.
Article in English | WPRIM | ID: wpr-111611

ABSTRACT

BACKGROUND/AIMS: The development of therapeutic strategies for the treatment of cirrhosis has become an important focus for basic and clinical researchers. Adrenergic receptor antagonists have been evaluated as antifibrotic drugs in rodent models of carbon tetrachloride (CCl4)-induced cirrhosis. The aim of the present study was to evaluate the effects of carvedilol and doxazosin on fibrosis/cirrhosis in a hamster animal model. METHODS: Cirrhotic-induced hamsters were treated by daily administration of carvedilol and doxazosin for 6 weeks. Hepatic function and histological evaluation were conducted by measuring biochemical markers, including total bilirubin, aspartate aminotransferase, alanine aminotransferase and albumin, and liver tissue slices. Additionally, transforming growth factor beta (TGF-beta) immunohistochemistry was analyzed. RESULTS: Biochemical markers revealed that hepatic function was restored after treatment with doxazosin and carvedilol. Histological evaluation showed a decrease in collagen type I deposits and TGF-beta-secreting cells. CONCLUSIONS: Taken together, these results suggest that the decrease in collagen type I following treatment with doxazosin or carvedilol is achieved by decreasing the profibrotic activities of TGF-beta via the blockage of alpha1- and beta-adrenergic receptor. Consequently, a diminution of fibrotic tissue in the CCl4-induced model of cirrhosis is achieved.


Subject(s)
Animals , Cricetinae , Adrenergic alpha-1 Receptor Antagonists/pharmacology , Alanine Transaminase/blood , Aspartate Aminotransferases/blood , Bilirubin/blood , Carbazoles/pharmacology , Carbon Tetrachloride , Collagen Type I/drug effects , Doxazosin/pharmacology , Liver/metabolism , Liver Cirrhosis/blood , Liver Function Tests , Propanolamines/pharmacology , Serum Albumin/analysis , Transforming Growth Factor beta/blood
3.
Rev. bras. anestesiol ; 65(2): 141-146, Mar-Apr/2015. tab
Article in English | LILACS | ID: lil-741715

ABSTRACT

PURPOSE: Postoperative pain and nausea/vomitting (PNV) are common in laparoscopic cholecystectomy patients. Sympatholytic agents might decrease requirements for intravenous or inhalation anesthetics and opioids. In this study we aimed to analyze effects of esmolol on intraoperative anesthetic-postoperative analgesic requirements, postoperative pain and PNV. METHODS: Sixty patients have been included. Propofol, remifentanil and vecuronium were used for induction. Study groups were as follows; I - Esmolol infusion was added to maintenance anesthetics (propofol and remifentanil), II - Only propofol and remifentanil was used during maintenance, III - Esmolol infusion was added to maintenance anesthetics (desflurane and remifentanil), IV - Only desflurane and remifentanil was used during maintenance. They have been followed up for 24 h for PNV and analgesic requirements. Visual analog scale (VAS) scores for pain was also been evaluated. RESULTS: VAS scores were significantly lowest in group I (p = 0.001-0.028). PNV incidence was significantly lowest in group I (p = 0.026). PNV incidence was also lower in group III compared to group IV (p = 0.032). Analgesic requirements were significantly lower in group I and was lower in group III compared to group IV (p = 0.005). Heart rates were significantly lower in esmolol groups (group I and III) compared to their controls (p = 0.001) however blood pressures were similar in all groups (p = 0.594). Comparison of esmolol groups with controls revealed that there is a significant decrease in anesthetic and opioid requirements (p = 0.024-0.03). CONCLUSION: Using esmolol during anesthetic maintenance significantly decreases anesthetic-analgesic requirements, postoperative pain and PNV. .


OBJETIVO: A dor e a incidência de náusea e vômito no período pós-operatório (NVP) são comuns em pacientes submetidos à colecistectomia laparoscópica. Os agentes simpatolíticos podem diminuir a necessidade de opiáceos ou anestésicos inalatórios ou intravenosos. Neste estudo, nosso objetivo foi analisar os efeitos de esmolol sobre a necessidade de anestésico no período intraoperatório e de analgésico no pós-operatório e a incidência de dor e NVP. MÉTODOS: Sessenta pacientes foram incluídos. Propofol, remifentanil e vecurônio foram usados para a indução. Os grupos de estudo foram os seguintes: grupo I, a infusão de esmolol foi adicionada aos anestésicos (propofol e remifentanil) para manutenção; grupo II, apenas propofol e remifentanil foram usados durante a manutenção; grupo III, a infusão de esmolol foi adicionada aos anestésicos (desflurano e remifentanil) para manutenção; grupo IV, apenas desflurano e remifentanil foram usados durante a manutenção. O período de acompanhamento foi de 24 horas para avaliar a incidência de NVP e a necessidade de analgésicos. Os escores de dor também foram avaliados por meio da escala visual analógica (EVA). RESULTADOS: Os escores EVA foram significativamente menores no grupo I (p = 0,001-0,028). A incidência de NVP foi significativamente menor no grupo I (p = 0,026). NVP também foi menor no grupo III em relação ao grupo IV (p = 0,032). A necessidade de analgésicos foi significativamente menor no grupo I e menor no grupo III em relação ao grupo IV (p = 0,005). A frequência cardíaca foi significativamente menor nos grupos esmolol (grupos I e III) comparados com os controles (p = 0,001), mas a pressão arterial foi semelhante em todos os grupos (p = 0,594). A comparação entre os grupos esmolol e controles revelou que houve uma diminuição. CONCLUSÃO: O uso de esmolol durante a manutenção da anestesia reduz significativamente a necessidade de anestésico-analgésico, dor e incidência de NVP. .


OBJETIVO: El dolor y la incidencia de náuseas y vómito en el período postoperatorio (NVPO) son comunes en pacientes sometidos a colecistectomía laparoscópica. Los agentes simpaticolíticos pueden disminuir la necesidad de opiáceos o anestésicos inhalatorios o intravenosos. En este estudio, nuestro objetivo fue analizar los efectos del esmolol sobre la necesidad de anestésico en el período intraoperatorio y de analgésico en el postoperatorio y la incidencia de dolor y NVPO. MÉTODOS: Sesenta pacientes fueron incluidos. Para la inducción fueron usados el propofol, el remifentanilo y el vecuronio. Los grupos de estudio fueron los siguientes: grupo I, la infusión de esmolol fue añadida a los anestésicos (propofol y remifentanilo) para el mantenimiento; grupo II, durante el mantenimiento solamente fueron usados el propofol y el remifentanilo; grupo III, la infusión de esmolol fue añadida a los anestésicos (desflurano y remifentanilo) para mantenimiento; grupo IV, solamente fueron usados durante el mantenimiento el desflurano y el remifentanilo. El período de acompañamiento fue de 24 h para calcular la incidencia de NVPO y la necesidad de analgésicos. Las puntuaciones de dolor también fueron evaluadas mediante la escala visual analógica. RESULTADOS: Las puntuaciones de la escala visual analógica fueron significativamente menores en el grupo I (p = 0,001-0,028). La incidencia de NVPO fue significativamente menor en el grupo I (p = 0,026). NVPO también fue menor en el grupo III con relación al grupo IV (p = 0,032). La necesidad de analgésicos fue significativamente menor en el grupo I y menor en el grupo III con relación al grupo IV (p = 0,005). La frecuencia cardíaca fue significativamente menor en los grupos esmolol (grupos I y III) comparados con el control (p = 0,001), pero la presión arterial fue similar en todos los grupos (p = 0,594). La comparación entre los grupos esmolol y control reveló que hubo una disminución significativa de la necesidad ...


Subject(s)
Humans , Pain, Postoperative , Cholecystectomy, Laparoscopic , Postoperative Nausea and Vomiting , Adrenergic alpha-1 Receptor Antagonists/pharmacology
4.
Arq. bras. cardiol ; 104(2): 144-151, 02/2015. graf
Article in English | LILACS | ID: lil-741140

ABSTRACT

Background: In pathological situations, such as acute myocardial infarction, disorders of motility of the proximal gut can trigger symptoms like nausea and vomiting. Acute myocardial infarction delays gastric emptying (GE) of liquid in rats. Objective: Investigate the involvement of the vagus nerve, α 1-adrenoceptors, central nervous system GABAB receptors and also participation of paraventricular nucleus (PVN) of the hypothalamus in GE and gastric compliance (GC) in infarcted rats. Methods: Wistar rats, N = 8-15 in each group, were divided as INF group and sham (SH) group and subdivided. The infarction was performed through ligation of the left anterior descending coronary artery. GC was estimated with pressure-volume curves. Vagotomy was performed by sectioning the dorsal and ventral branches. To verify the action of GABAB receptors, baclofen was injected via icv (intracerebroventricular). Intravenous prazosin was used to produce chemical sympathectomy. The lesion in the PVN of the hypothalamus was performed using a 1mA/10s electrical current and GE was determined by measuring the percentage of gastric retention (% GR) of a saline meal. Results: No significant differences were observed regarding GC between groups; vagotomy significantly reduced % GR in INF group; icv treatment with baclofen significantly reduced %GR. GABAB receptors were not conclusively involved in delaying GE; intravenous treatment with prazosin significantly reduced GR% in INF group. PVN lesion abolished the effect of myocardial infarction on GE. Conclusion: Gastric emptying of liquids induced through acute myocardial infarction in rats showed the involvement of the vagus nerve, alpha1- adrenergic receptors and PVN. .


Fundamento: Distúrbios da motilidade do intestino proximal no infarto agudo do miocárdio podem desencadear sintomas digestivos como náuseas e vômitos. O infarto do miocárdio ocasiona retardo do esvaziamento gástrico (EG) de líquido em ratos. Objetivo: Investigar se existe a influência do nervo vago (VGX), adrenoreceptores α-1, receptores GABAB do sistema nervoso central e participação do núcleo paraventricular (NPV) do hipotálamo no esvaziamento gástrico (EG) e complacência gástrica (CG) em ratos infartados. Métodos: Ratos Wistar (n = 8-15) foram divididos em: grupo infarto (INF), sham (SH) e subdivididos. O infarto foi realizado por ligadura da artéria coronária descendente anterior. A complacência gástrica foi estimada com curvas pressão-volume. Realizada vagotomia por secção dos ramos dorsal e ventral. Para verificar a ação dos receptores GABAB foi injetado baclofeno por via intra ventrículo-cerebral. Simpatectomia química foi realizada com prazosina intravenosa (iv), e na lesão do núcleo paraventricular do hipotálamo foi utilizada corrente elétrica de 1mA/10s, com esvaziamento gástrico determinado por medição da retenção gástrica (% RG) de uma refeição salina. Resultados: Não houve diferença significativa na CG. A vagotomia (VGX) reduziu significativamente a %RG; no grupo INF, o tratamento intra ventrículo-cerebral (ivc) com baclofeno reduziu significativamente a % RG; não houve conclusivamente envolvimento dos receptores GABAB em retardar o EG; o tratamento intravenoso com prazosina reduziu significativamente a %RG no grupo INF. A lesão do NPV aboliu o efeito do infarto do miocárdio no EG. Conclusão: O nervo vago, receptores α-adrenérgicos e núcleo paraventricular estão envolvidos no retardo do esvaziamento gástrico no infarto agudo do miocárdio em ratos. .


Subject(s)
Animals , Male , Gastric Emptying/physiology , Myocardial Infarction/physiopathology , Paraventricular Hypothalamic Nucleus/physiopathology , Receptors, Adrenergic, alpha-1/physiology , Receptors, GABA-B/physiology , Vagus Nerve/physiopathology , Adrenergic alpha-1 Receptor Antagonists/pharmacology , Baclofen/pharmacology , GABA-B Receptor Agonists/pharmacology , Gastroparesis/physiopathology , Myocardial Infarction/complications , Prazosin/pharmacology , Rats, Wistar , Time Factors , Vagotomy
6.
Arq. bras. cardiol ; 98(4): 321-328, abr. 2012. ilus, tab
Article in Portuguese | LILACS | ID: lil-639423

ABSTRACT

FUNDAMENTO: A presença de nervos nas válvulas cardíacas foi demonstrada pela primeira vez há décadas e identificadas em subpopulações: simpáticas e parassimpáticas, e, portanto, é esperado que as válvulas sejam grandemente afetadas pelos nervos autônomos. Entretanto, poucos estudos têm se concentrado na regulação de válvulas cardíacas pelo sistema nervoso autônomo. OBJETIVO: Buscamos identificar o papel do sistema nervoso autônomo na regulação das propriedades mecânicas dos tecidos de válvulas mitrais porcinas. MÉTODOS: As propriedades mecânicas dos folhetos de válvulas mitrais porcinas foram avaliados em resposta à norepinefrina (NE) e acetilcolina (ACH), os principais neurotransmissores. Ao mesmo tempo, fentolamina (FENT), metoprolol (Metop), atropina (Atrop) e desnudamento endotelial foram adicionados ao sistema reativo. RESULTADOS: Sob condições fisiológicas, a rigidez não foi afetada pelo desnudamento endotelial (p > 0,05). A NE significantemente aumentou a rigidez valvar por aumento de 10 vezes na concentração (10-6 vs 10-7, p < 0,05; 10-5 vs 10-6, p < 0,05). Essa resposta foi amenizada por FENT, Metop ou desnudamento endotelial (p < 0,05); entretanto, manteve-se aumentada de maneira significante quando comparada aos Controles (p < 0,05). A ACH causou uma diminuição na rigidez acompanhada por um aumento em sua concentração (alteração significante na rigidez por aumento de 10 vezes na concentração de ACH, 10-6 vs Controle, p < 0,05; 10-5 vs 10-6, p < 0,05), que foi revertida pelo desnudamento endotelial e Atrop (p > 0,05 vs Controle). CONCLUSÃO: Esses achados ressaltam o papel do sistema nervoso autônomo na regulação das propriedades mecânicas das cúspides de válvula mitral porcina, o que reforça a importância do estado nervoso autônomo no funcionamento ideal da válvula.


BACKGROUND: The presence of nerves in heart valves was first depicted decades ago and identified into subpopulations: sympathetic, parasympathetic. So valves are expected to be greatly affected by the autonomic nerves. However, few studies have focused on the regulation of heart valves by the autonomic nervous system. OBJECTIVE: We sought to identify the role of the autonomic nervous system in the regulation of the mechanical properties of porcine mitral valve tissues. METHODS: Mechanical properties of porcine mitral valve leaflets were evaluated in response to norepinephrine (NE) and acetylcholine (ACH), the main neurotransmitters. At the same time, phentolamine (Phent), metoprolol (Metop), atropine (Atrop) and endothelial denudation were added to the reactive system. RESULTS: Under physiological conditions, the stiffness was not affected by endothelial denudation (p > 0.05). NE elevated the valve stiffness significantly per 10-fold increase in concentration (10-6 vs 10-7, p < 0.05; 10-5 vs 10-6, p < 0.05). This response was mitigated by Phent, Metop or endothelial denudation (p < 0.05), however, it was still increased significantly when compared to Controls (p < 0.05). ACH caused a decrease in stiffness accompanied by an increase in its concentration (significant change in stiffness per 10-fold increase in ACH concentration, 10-6 vs Control, p < 0.05; 10-5 vs 10-6, p < 0.05), which were reversed by endothelial denudation and Atrop (p > 0.05 vs Control). CONCLUSION: These findings highlight the role of the autonomic nervous system in the regulation of the mechanical properties of porcine mitral valve cusps, which underline the importance of autonomic nervous status for optimal valve function.


FUNDAMENTO: La presencia de nervios en las válvulas cardíacas quedó demostrada por primera vez hace algunas décadas e identificadas en sub-poblaciones: simpáticas y parasimpáticas y por lo tanto, lo que se espera es que las válvulas reciban una gran afectación de los nervios autónomos. Sin embargo, pocos estudios se han concentrado en la regulación de válvulas cardíacas a través del sistema nervioso autónomo. OBJETIVO: Buscamos identificar el papel del sistema nervioso autónomo en la regulación de las propiedades mecánicas de los tejidos de las válvulas mitrales porcinas. MÉTODOS: Las propiedades mecánicas de las capas de válvulas mitrales porcinas fueron evaluadas en respuesta a la norepinefrina (NE) y a la acetilcolina (ACH), los principales neurotransmisores. Igualmente, la fentolamina (FENT), el metoprolol (Metop), la atropina (Atrop) y la denudación endotelial también se añadieron al sistema reactivo. RESULTADOS: Bajo condiciones fisiológicas, la rigidez no se afectó por el denudación endotelial (p > 0,05). La NE aumentó significativamente la rigidez valvular con un aumento de 10 veces en la concentración (10-6 vs 10-7, p < 0,05; 10-5 vs 10-6, p < 0,05). Esa respuesta fue amenizada por FENT, Metop o denudación endotelial (p < 0,05); pero se mantuvo aumentada de manera significativa cuando se le comparó con los Controles (p < 0,05). La ACH causó una disminución en la rigidez acompañada por un aumento en su concentración (alteración significativa en la rigidez por el aumento en 10 veces de la concentración de ACH, 10-6 vs Control, p < 0,05; 10-5 vs 10-6, p < 0,05), que fue revertida por la denudación endotelial y Atrop (p > 0,05 vs Control). CONCLUSIÓN: Esos hallazgos destacan el rol del sistema nervioso autónomo en la regulación de las propiedades mecánicas de las cúspides de la válvula mitral porcina, lo que refuerza la importancia del estado nervioso autónomo en el funcionamiento ideal de la válvula.


Subject(s)
Animals , Autonomic Nervous System/physiology , Mitral Valve/physiology , Analysis of Variance , Acetylcholine/pharmacology , Adrenergic alpha-1 Receptor Antagonists/pharmacology , Aortic Valve/physiopathology , Autonomic Nervous System/drug effects , Elastic Tissue/physiology , Mitral Valve/innervation , Norepinephrine/pharmacology , Phentolamine/pharmacology , Receptors, Neurotransmitter/drug effects , Receptors, Neurotransmitter/physiology , Swine , Vascular Stiffness/drug effects , Vascular Stiffness/physiology
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