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1.
Chem Biodivers ; 21(4): e202400187, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38429232

RESUMO

Psidium brownianum Mart is reported in the literature by antinociceptive and antioxidant activities, indicating that this species' secondary metabolites might be used to control inflammatory processes. The present study aimed to characterize the topical antiedematogenic activity of the essential oil of Psidium brownianum Mart. (OEPB) in ear edema models by different inflammatory agents. Female Swiss mice (25-35 g) and Wistar albino rats (200-300 g) were used throughout tests (n=6/group) on acute or chronic edema models induced by single and multiple topical applications. The OEPB is administered topically pure or at a concentration of 100 or 200 mg/mL. The antiedematogenic mechanism of OEPB was analyzed by administering capsaicin, arachidonic acid, histamine, and phenol at the best effective dose (200 mg/mL). The results showed a significant reduction of edema-induced single (28.87 %) and multiple (50.13 %) applications of croton oil compared to the negative control group. Regarding potential mechanisms of action, OEPB (200 mg/mL) inhibited the development of edema triggered by capsaicin (29.95 %), arachidonic acid (22.66 %), phenol (23.35 %), and histamine (75.46 %), suggesting an interference with the histaminergic pathway. These results indicate that OEPB presents a topical antiedematogenic effect in acute and chronic murine models, possibly interfering with inflammatory pathways triggered by mediators such as histamine.


Assuntos
Óleos Voláteis , Psidium , Camundongos , Feminino , Animais , Óleos Voláteis/farmacologia , Óleos Voláteis/uso terapêutico , Capsaicina , Histamina/efeitos adversos , Ácido Araquidônico/efeitos adversos , Edema/induzido quimicamente , Edema/tratamento farmacológico , Extratos Vegetais/farmacologia
2.
Chem Biodivers ; 20(12): e202300906, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37795905

RESUMO

Exacerbated inflammatory responses to harmful stimuli can lead to significant pain, edema, and other complications that require pharmacological intervention. Abietic acid (AA) is a diterpene found as a significant constituent in pine species, and evidence has identified its biological potential. The present study aimed to evaluate abietic acid's antiedematogenic and anti-inflammatory activity in mice. Swiss mice (Mus musculus) weighing 20-30 g were treated with AA at 50, 100, and 200 mg/kg. The central nervous system (CNS) effects were evaluated using open-field and rotarod assays. The antinociceptive and anti-inflammatory screening was assessed by the acetic acid and formalin tests. The antiedematogenic activity was investigated by measuring paw edema induced by carrageenan, dextran, histamine, arachidonic acid, and prostaglandin, in addition to using a granuloma model. The oral administration of abietic acid (200 mg/Kg) showed no evidence of CNS effects. The compound also exhibited significant antiedematogenic and anti-inflammatory activities in the carrageenan and dextran models, mostly related to the inhibition of myeloperoxidase (MOP) activity and histamine action and, to a lesser extent, the inhibition of eicosanoid-dependent pathways. In the granuloma model, abietic acid's effect was less expressive than in the acute models investigated in this study. In conclusion, abietic acid has analgesic and antiedematogenic activities related to anti-inflammatory mechanisms.


Assuntos
Dextranos , Histamina , Camundongos , Animais , Carragenina/efeitos adversos , Dextranos/efeitos adversos , Histamina/efeitos adversos , Analgésicos/farmacologia , Analgésicos/uso terapêutico , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/uso terapêutico , Extratos Vegetais/farmacologia , Edema/induzido quimicamente , Edema/tratamento farmacológico , Granuloma/tratamento farmacológico
3.
Rev Alerg Mex ; 70(4): 265-268, 2023 Dec 31.
Artigo em Espanhol | MEDLINE | ID: mdl-38506870

RESUMO

The term food intolerance has been used non-specifically to define a wide range of disorders related to food intake. Recently, the use of the term "non-immunological adverse reactions to foods" (RANIAs) was recommended as a more correct clinical definition. The pathophysiological mechanisms can be diverse, sometimes unknown, and there are no validated diagnostic tests, making it difficult to obtain accurate data. The clinical manifestations of non-immunological adverse reactions to foods affect more than one organ or system; and gastrointestinal symptoms (pain, abdominal distension, flatulence, and diarrhea) are the most common. Non-immunological adverse reactions to foods are divided into independent and dependent on host factors. Foods may contain chemicals with pharmacological activity and be present naturally, such as vasoactive amines (histamine) and salicylates, or added for preservation, to improve appearance or flavor (monosodium glutamate, tartrazine, sulfites, and benzoates). In some cases, these types of reactions may be like to hypersensitivity reactions. Concomitant alcohol consumption may worsen symptoms by inhibiting histamine breakdown and increasing intestinal permeability. In patients diagnosed with non-immunological adverse reactions to foods, it is important to rule out some psychological problems: aversions or eating disorders.


El término intolerancia alimentaria se ha utilizado de manera inespecífica para definir una amplia gama de trastornos relacionados con la ingesta de alimentos. Recientemente se recomendó el uso de la expresión "reacciones adversas no inmunológicas a alimentos" (RANIAs) como una definición clínica más correcta. Los mecanismos fisiopatológicos pueden ser diversos, a veces desconocidos, y no existen pruebas diagnósticas validadas, por lo que es difícil obtener datos certeros. Las manifestaciones clínicas de las reacciones adversas no inmunológicas a alimentos afectan a más de un órgano o sistema; y los síntomas gastrointestinales (dolor, distensión abdominal, flatulencias y diarrea) son los más frecuentes. Las reacciones adversas no inmunológicas a alimentos se dividen en independientes y dependientes de factores del huésped. Los alimentos pueden contener productos químicos con actividad farmacológica y estar presentes en forma natural, como las aminas vasoactivas (histamina) y los salicilatos, o añadirse para su conservación, mejorar la apariencia o el sabor (glutamato monosódico, tartrazina, sulfitos y benzoatos). En algunos casos, este tipo de reacciones pueden ser similares, desde el punto de vista clínico, a las reacciones de hipersensibilidad. El consumo de alcohol concomitante puede empeorar los síntomas, al inhibir la degradación de la histamina y aumentar la permeabilidad intestinal. En pacientes con diagnóstico de reacciones adversas no inmunológicas por alimentos es importante descartar algunos problemas de índole psicológica: aversiones o trastornos de la conducta alimentaria.


Assuntos
Intolerância Alimentar , Histamina , Humanos , Intolerância Alimentar/diagnóstico , Intolerância Alimentar/etiologia , Histamina/efeitos adversos , Aminas , Benzoatos , Diarreia
4.
Food Chem Toxicol ; 119: 199-205, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-29680269

RESUMO

The aim of this study was to evaluate the anti-edematogenic activity of X. americana L. (HEXA) hydroethanolic extract in ear edema models (acute and chronic) induced by croton oil and by different phlogistic agents (arachidonic acid, capsaicin, phenol and histamine), identifying the possible anti-edematogenic mechanism. HEXA demonstrated a significant anti-edematogenic effect at concentrations of 100-500 µg/ear in ear edema induced by croton oil with higher inhibition of edema of 39.37. However, the concentrations of 100 and 200 µg/ear were taken as a standard, demonstrating the effect in the chronic model induced by croton oil with inhibition of 61.62% and 48.74%. In the AA-induced ear edema model, HEXA showed inhibition of: 24.45% and 32.31%; capsaicin inhibition of 72.72% and 47.57%; phenol inhibition of 34% and 20.1%; and histamine inhibition of 31.8% and 21.62%. Then, the results were showed that HEXA demonstrated an anti-edematogenic effect in acute and chronic inflammation models, demonstrating a probable mechanism of action by the inhibition or modulation of key mediators of the inflammatory process. The chemical profile and presence of flavonoids guaranteeing a profile of activity similar to natural drugs that act or modulate the production of mediators of inflammations.


Assuntos
Cromatografia Líquida de Alta Pressão/métodos , Dermatite/tratamento farmacológico , Edema/tratamento farmacológico , Olacaceae/química , Extratos Vegetais/uso terapêutico , Animais , Ácido Araquidônico/efeitos adversos , Ácido Araquidônico/antagonistas & inibidores , Capsaicina/efeitos adversos , Capsaicina/antagonistas & inibidores , Óleo de Cróton/toxicidade , Relação Dose-Resposta a Droga , Edema/induzido quimicamente , Feminino , Histamina/efeitos adversos , Antagonistas dos Receptores Histamínicos/uso terapêutico , Camundongos , Fenol/efeitos adversos , Fenol/antagonistas & inibidores
5.
Anticancer Agents Med Chem ; 17(3): 359-364, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-26552391

RESUMO

BACKGROUND: Chemotherapy is one of the most common approaches for cancer treatment. Particularly Doxorubicin has been proven to be effective in the treatment of many soft and solid tumors for locally advanced and metastatic cancer. It is not easy to clinically evaluate the chemotoxic or chemoprotective effect of some drugs, even more when there is a subclinical toxicity. OBJECTIVE: To determine the usefulness of the hepatobiliary, colloid and cardiac scintigraphies, employing99mTcdisida, 99mTc-phytate and 99mTc-sestamibi respectively, in the evaluation of the hepato and cardiotoxicity of two chemotherapeutic treatments assessed in rats. METHOD: Two groups were submitted to doxorubicin (DOX) treatment and one was co-administered with histamine (DOX+HIS). Static 99mTc-phytate and 99mTc-sestamibi scintigraphies as well as a dynamic 99mTc-disida study were performed in a small field of view gamma camera at: 0 weeks (control), 1 week and 2 weeks of treatment. Imagenological parameters were calculated: Liver/Bone Marrow ratio (L/BM), Heart/Background ratio (H/B) and time to the maximum (Tmax) for 99mTc-phytate, 99mTc-sestamibi and 99mTc-disida extraction, respectively. RESULTS: Control (L/BM= 98±3; H/B=2.3±0.4; Tmax=8±3), DOX (L/BM: 85±3, 80±3; H/B, 3.5±0.5, 3.3±0.5 and Tmax 6±1, 4±1) for 1 and 2 weeks respectively and DOX+HIS (L/BM: 99±0.3, 98±1; H/B 2.9±0.5, 2.9±0.5 and Tmax, 8±2, 9±2) for 1 and 2 weeks, respectively. Histological analysis showed cardio and hepatotoxicity induced by doxorubicin. CONCLUSION: Imagenological parameters showed differences among treated and control groups and between both chemotherapy treatments. Thus, these radiopharmaceutical functional approaches were able to reflect heart and liver toxicity produced by doxorubicin.


Assuntos
Antineoplásicos/efeitos adversos , Doxorrubicina/efeitos adversos , Coração/efeitos dos fármacos , Histamina/efeitos adversos , Fígado/efeitos dos fármacos , Animais , Antineoplásicos/administração & dosagem , Antineoplásicos/farmacologia , Cardiotoxicidade , Relação Dose-Resposta a Droga , Doxorrubicina/administração & dosagem , Doxorrubicina/farmacologia , Ensaios de Seleção de Medicamentos Antitumorais , Histamina/administração & dosagem , Histamina/farmacologia , Masculino , Estrutura Molecular , Ratos , Ratos Sprague-Dawley , Relação Estrutura-Atividade
6.
Toxicon ; 121: 51-60, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27567703

RESUMO

Bites caused by Scolopendra viridicornis centipede are mainly characterized by burning pain, paresthesia and edema. On this regard, the aim of this work was to study the involvement of mast cells and histamine in edema induced by Scolopendra viridicornis (Sv) centipede venom. The edema was analyzed on mice paws. The mice were pretreated with cromolyn (mast cell degranulation inhibitor) and antagonists of histamine receptors, such as promethazine (H1R), cimetidine (H2R) and thioperamide (H3/H4R). The analyses were carried out at different times after the injection of Sv venom (15 µg) or PBS in the footpad of mice. Our results showed a significant inhibition of the edema induced by Sv venom injection in mice previously treated: cromolyn (38-91%), promethazine (50-59%) and thioperamide (around 30%). The treatment with cimetidine did not alter the edema induced by Sv venom. Histopathological analysis showed that Sv venom injection (15 µg) induced edema, leukocyte recruitment and mast cells degranulation, when compared with the PBS-injected mice. Direct effects of the Sv venom on mast cells were studied in PT-18 line (mouse mast cell) and RBL-2H3 cells (rat mast cells). The data showed that higher doses (3.8 and 7.5 µg) of Sv venom were cytotoxic for both cell lineages and induced morphological changes. However, lower doses of the venom induced degranulation of both mast cell lines, as well as the secretion of MCP-1, IL-6 and IL-1ß. The production of PGD2 was only observed in the RBL-2H3 line incubated with Sv venom. Taking our results together, we demonstrated that upon Sv venom exposure, mast cells and histamine are crucial for the establishment of the local inflammatory reaction.


Assuntos
Venenos de Artrópodes/toxicidade , Edema/etiologia , Histamina/efeitos adversos , Mastócitos/citologia , Animais , Artrópodes , Linhagem Celular , Quimiocinas/biossíntese , Citocinas/biossíntese , Eicosanoides/biossíntese , Masculino , Mastócitos/metabolismo , Camundongos , Microscopia Eletrônica de Varredura
7.
Basic Clin Pharmacol Toxicol ; 115(4): 335-42, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24674382

RESUMO

Sulphated polysaccharides from marine algae are widely used in biotechnological and pharmaceutical areas. In this study, we evaluated the effects of sulphated polysaccharides from the green marine alga Caulerpa mexicana (Cm-SPs) in nociceptive and inflammatory models in rodents. Cm-SPs (10 or 20 mg/kg), administered i.v. in Swiss mice, significantly reduced nociceptive responses, as measured by the number of writhes in response to acetic acid. Cm-SPs (10 or 20 mg/kg) also reduced second-phase responses in the formalin test, but did not exhibit a significant antinociceptive effect in the hot plate test, suggesting that its antinociceptive action occurs through a peripheral mechanism. Cm-SPs (5, 10 or 20 mg/kg), administered s.c. in wistar rats 1 hr before carrageenan, dextran, histamine or serotonin, were tested in paw oedema models. Cm-SPs (10 or 20 mg/kg) reduced carrageenan-induced paw oedema and myeloperoxidase activity in the paw. In addition, Cm-SPs (20 mg/kg) inhibited dextran- or histamine-induced paw oedema, but not serotonin-induced oedema, suggesting that histamine is the major target of Cm-SPs anti-oedematogenic activity. Finally, Cm-SPs (20 mg/kg) administered in mice did not show significant signs of toxicity. In conclusion, Cm-SPs appear to be promising natural modulatory agents for pain and inflammatory conditions.


Assuntos
Analgésicos/farmacologia , Anti-Inflamatórios/farmacologia , Caulerpa/química , Polissacarídeos/farmacologia , Animais , Carragenina/efeitos adversos , Dextranos/efeitos adversos , Modelos Animais de Doenças , Edema/induzido quimicamente , Edema/tratamento farmacológico , Feminino , Histamina/efeitos adversos , Inflamação/tratamento farmacológico , Masculino , Camundongos , Dor/tratamento farmacológico , Medição da Dor , Peroxidase/metabolismo , Ratos , Ratos Wistar , Serotonina/efeitos adversos
8.
J Ethnopharmacol ; 109(2): 281-8, 2007 Jan 19.
Artigo em Inglês | MEDLINE | ID: mdl-16949230

RESUMO

UNLABELLED: The popular medicine Passiflora edulis has been used as a sedative, tranquilizer, against cutaneous inflammatory diseases and intermittent fever. Most of the pharmacological investigations of Passiflora edulis have been addressed to its Central Nervous System activities, such as anxiolytic, anticonvulsant and sedative actions. Otherwise, there are few reports about the anti-inflammatory activity of the Passiflora species. The aim of this study was to investigate the mechanism of the anti-inflammatory effect of aqueous lyophilized extract obtained from leaves of Passiflora edulis var. flavicarpa Degener (Passifloraceae) in the mouse model of pleurisy induced by carrageenan (Cg), bradykinin, histamine or substance P, observing the effects upon leucocytes migration, myeloperoxidase (MPO), nitric oxide (NO) concentrations and tumor necrosis factor-alpha (TNFalpha) and interleukin-1 beta (IL-1beta) levels. RESULTS: Passiflora edulis (250mg/kg) administered by intraperitoneal route (i.p.) inhibited the leukocyte, neutrophils, myeloperoxidase, nitric oxide, TNFalpha and IL-1beta levels (P<0.01) in the pleurisy induced by carrageenan. Passiflora edulis (250-500mg/kg, i.p.) also inhibited total and differential leukocytes in the pleurisy induced by bradykinin, histamine or substance P (P<0.05). CONCLUSION: Several mechanisms, including the inhibition of pro-inflammatory cytokines (TNFalpha, IL-1beta), enzyme (myeloperoxidase) and mediators (bradykinin, histamine, substance P, nitric oxide) release and/or action, appear to account for Passiflora edulis's actions.


Assuntos
Anti-Inflamatórios não Esteroides/farmacologia , Inflamação/tratamento farmacológico , Passiflora/química , Extratos Vegetais/farmacologia , Animais , Bradicinina/efeitos adversos , Carragenina/efeitos adversos , Modelos Animais de Doenças , Feminino , Histamina/efeitos adversos , Inflamação/induzido quimicamente , Interleucina-1beta/metabolismo , Leucócitos/efeitos dos fármacos , Leucócitos/patologia , Masculino , Camundongos , Óxido Nítrico/metabolismo , Peroxidase/efeitos dos fármacos , Peroxidase/metabolismo , Fitoterapia/métodos , Pleurisia/induzido quimicamente , Pleurisia/tratamento farmacológico , Substância P/efeitos adversos , Fator de Necrose Tumoral alfa/efeitos dos fármacos , Fator de Necrose Tumoral alfa/metabolismo
9.
Acta cir. bras ; Acta cir. bras;15(1): 40-7, jan.-mar. 2000. ilus, tab, graf
Artigo em Português | LILACS | ID: lil-260514

RESUMO

O intento do presente estudo foi avaliar em cães os efeitos de dois tipos de procedimentos na prevenção do refluxo gastroesofágico. Foram utilizados 30 animais, divididos em grupos de 10. No Grupo I (controle) foi realizada a esofagogastrostomia à Gröndhal; no Grupo II praticou-se a esofagogastroplastia à Thal-Hatafuku; no III, a esofagogastrostomia foi associada à gastrectomia dois terços e anastomose gastrojejunal em Y. Foram analisados os seguintes parâmetros: peso, endoscopia, exame radiológico e estudo morfológico do esôfago. Para estimular a secreção ácida do estômago foi aplicada diariamente injeção de histamina em cera de abelha. Os resultados foram obtidos em três fases: pré-operatório, entre o 30§ e o 40§ pós-operatório e após aplicação de histamina. No Grupo I, houve queda de peso significante entre as duas primeiras fases, que se acentuou na terceira; no Grupo II, a alteração de peso não foi significativa nas três fases; no III, a queda de peso significante foi verificada entre a 1ª e a 2ª fase, não havendo registro na fase seguinte devido a morte precoce dos animais com a aplicação da droga. À endoscopia, verificou-se intensidade da esofagite significativamente maior nos animais do Grupo I do que nos do II, após estímulo histamínico. Nos cães do Grupo III, não foi possível obter-se este dado pelo mesmo motivo relatado na análise do parâmetro anterior. O estudo radiológico demonstrou que nos cães do Grupo I o refluxo foi franco em 70 por cento dos cães e, moderado em 30 por cento. No Grupo II ,o refluxo foi ausente na maioria dos cães mas, moderado em 30 por cento. No III, o conteúdo gástrico de bário refluiu em todos os animais e de modo significante na maioria deles (70 por cento). Os dados macro e microscópicos não mostraram diferença significativa entre os três grupos, contudo o Grupo II foi o menos acometido. Os resultados do experimento evidenciaram que a esofagogastrostomia, como se esperava, produz intenso refluxo gastroesofágico; a esofagocardioplastia mostrou ter importante eficácia anti-refluxo e menor morbidade; a cirurgia realizada no grupo III teve morbidade elevada e mortalidade precoce com o estímulo histamínico. Acredita-se que a esofagogastroplastia tenha lugar reservado entre os procedimentos destinados ao tratamento de casos selecionados de acalásia e de estenose péptica do esôfago.


Assuntos
Animais , Masculino , Feminino , Cães , Esofagoplastia , Gastrectomia , Gastroplastia , Jejuno/cirurgia , Junção Esofagogástrica/cirurgia , Refluxo Gastroesofágico/prevenção & controle , Anastomose Cirúrgica/métodos , Esôfago , Esofagite/fisiopatologia , Esofagoscopia , Histamina/efeitos adversos
10.
Rev. chil. dermatol ; 13(4): 273-7, 1997. tab
Artigo em Espanhol | LILACS | ID: lil-228953

RESUMO

Prurito es un síntoma frecuente y predominante en varias patologías cutáneas, sistémicas y psicosomáticas. La patogénesis del prurito ha sido clásicamente relacionada a histamina. En esta revisión, se presenta la participación de otros mediadores inmunológicos y neuroendocrinos en su fisiopatología, cuya comprensión contribuye a un mejor enfrentamiento del paciente con prurito


Assuntos
Humanos , Prurido/etiologia , Ácido Araquidônico/efeitos adversos , Citocinas/efeitos adversos , Histamina/efeitos adversos , Entorpecentes/efeitos adversos , Neuropeptídeos/efeitos adversos , Prurido/fisiopatologia
19.
Arch. venez. farmacol. ter ; 6(4): 215-21, 1987. ilus, tab
Artigo em Espanhol | LILACS | ID: lil-66649

RESUMO

Se estudió el efecto de los antagonistas específicos sobre una condición experimental del acure que simula el asma, producida por dos agonistas distintos, acetilcolina (Ach) e histamina (H). Se midió el tiempo de aparición de los síntomas secuenciales (disnea, asfixia y colapso) y su variación bajo el efecto del antagonista específico de la H (feniltoloxamina, FTX) y de la Ach (atropina). En el asma producida por los dos agonistas, H y Ach, el antagonista específico fue potenciado por el antagonista no específico en sus efectos sobre todos los síntomas. Por el contrario, en la intoxicación de acure por H indovenosa, los efectos fueron estrictamente aditivos, al igual que sobre el músculo liso aislado. Los resultados fueron analizados estadísticamente para indicar la magnitud del sinergismo de potenciación. La potenciación es atribuida a la intervención de distintos receptores y/o a la variación de sensibilidad de un receptor bajo la acción de un agonista. Además, la liberación de varios mediadores por autoestimulación debida al agonista puede tener influencias


Assuntos
Animais , Masculino , Insuficiência Respiratória , Acetilcolina/efeitos adversos , Acetilcolina/farmacologia , Atropina/antagonistas & inibidores , Antagonistas dos Receptores Histamínicos H1/antagonistas & inibidores , Histamina/efeitos adversos , Histamina/farmacologia
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