Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 27
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
País de afiliação
Intervalo de ano de publicação
1.
Molecules ; 29(5)2024 Feb 26.
Artigo em Inglês | MEDLINE | ID: mdl-38474528

RESUMO

Amides containing methyl esters of γ-aminobutyric acid (GABA), L-proline and L-tyrosine, and esters containing 3-(pyridin-3-yl)propan-1-ol were synthesized by conjugation with 3,5-di-tert-butyl-4-hydroxybenzoic, an NSAID (tolfenamic acid), or 3-phenylacrylic (cinnamic, (E)-3-(3,4-dimethoxyphenyl)acrylic and caffeic) acids. The rationale for the conjugation of such moieties was based on the design of structures with two or more molecular characteristics. The novel compounds were tested for their antioxidant, anti-inflammatory and hypolipidemic properties. Several compounds were potent antioxidants, comparable to the well-known antioxidant, Trolox. In addition, the radical scavenging activity of compound 6 reached levels that were slightly better than that of Trolox. All the tested compounds demonstrated remarkable activity in the reduction in carrageenan-induced rat paw edema, up to 59% (compound 2, a dual antioxidant and anti-inflammatory molecule, with almost 2.5-times higher activity in this experiment than the parent NSAID). Additionally, the compounds caused a significant decrease in the plasma lipidemic indices in Triton-induced hyperlipidemic rats. Compound 2 decreased total cholesterol by 75.1% and compound 3 decreased triglycerides by 79.3% at 150 µmol/kg (i.p.). The hypocholesterolemic effect of the compounds was comparable to that of simvastatin, a well-known hypocholesterolemic drug. Additionally, all compounds lowered blood triglycerides. The synthesized compounds with multiple activities, as designed, may be useful as potential candidates for conditions involving inflammation, lipidemic deregulation and oxygen toxicity.


Assuntos
Anti-Inflamatórios não Esteroides , Antioxidantes , Ratos , Animais , Anti-Inflamatórios não Esteroides/química , Antioxidantes/química , Peroxidação de Lipídeos , Anti-Inflamatórios/farmacologia , Triglicerídeos , Edema/tratamento farmacológico , Carragenina/efeitos adversos
2.
Neurochem Res ; 48(3): 725-744, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36385213

RESUMO

Multiple Sclerosis (MS) is a degenerative disorder of the central nervous system (CNS) with complicated etiology that has not been clearly analyzed until nowadays. Apart from anti-inflammatory, immune modulatory and symptomatic treatments, which are the main tools towards MS control, antioxidant molecules may be of interest. Oxidative stress is a key condition implicated in the disease progression. Reactive species production is associated with immune cell activation in the brain as well as in the periphery, accounting for demyelinating and axonal disruptive processes. This review refers to research articles, of the last decade. It describes biological evaluation of antioxidant drugs, and molecules with pharmaceutical interest, which are not designed for MS treatment, however they seem to have potency against MS. Their antioxidant effect is accompanied, in most of the cases, by anti-inflammatory, immune-modulatory and neuroprotective properties. Compounds with such characteristics are expected to be beneficial in the treatment of MS, alone or as complementary therapy, improving some clinical and mechanistic aspects of the disease. This review also summarizes some of the pathobiological characteristics of MS, as well as the role of oxidative stress and inflammation in the progression of neurodegeneration. It presents known drugs and bioactive compounds with antioxidant, and in many cases, pleiotropic activity that have been tested for their efficacy in MS progression or the experimentally induced MS. Antioxidants may offer reduction or prevention of the disease symptoms and progression. Thus, their results may, combined with already applied treatments, be beneficial for the development of new molecules or the repurposing of drugs and supplements that are used with other indication so far.


Assuntos
Antioxidantes , Esclerose Múltipla , Humanos , Antioxidantes/farmacologia , Esclerose Múltipla/tratamento farmacológico , Reposicionamento de Medicamentos , Estresse Oxidativo , Anti-Inflamatórios/uso terapêutico , Anti-Inflamatórios/farmacologia
3.
Mol Divers ; 2023 Dec 25.
Artigo em Inglês | MEDLINE | ID: mdl-38145424

RESUMO

In this paper, we attempted to develop a novel class of compounds against lipoxygenase, a key enzyme in the biosynthesis of leukotrienes implicated in a series of inflammatory diseases. Given the absence of appropriate human 5-lipoxygenase crystallographic data, solved soybean lipoxygenase-1 and -3 structures were used as a template to generate an accurate pharmacophore model which was further used for virtual screening purposes. Eight compounds (1-8) have been derived from the in-house library consisting of N-substituted pyrroles conjugated with 5- or 6-indazole moieties through a carboxamide linker. This study led to the discovery of hit molecule 8 bearing a naphthyl group with the IC50 value of 22 µM according to soybean lipoxygenase in vitro assay. Isosteric replacement of naphthyl ring with quinoline moieties and reduction of carbonyl carboxamide group resulted in compounds 9-12 and 13, respectively. Compound 12 demonstrated the most promising enzyme inhibition. In addition, compounds 8 and 12 were found to reduce the carrageenan-induced paw edema in vivo by 52.6 and 49.8%, respectively. In view of the encouraging outcomes concerning their notable in vitro and in vivo anti-inflammatory activities, compounds 8 and 12 could be further optimized for the discovery of novel 5-lipoxygenase inhibitors in future. A structure-based 3D pharmacophore model was used in the virtual screening of in-house library to discover novel potential 5-lipoxygenase inhibitors.

4.
Molecules ; 28(18)2023 Sep 21.
Artigo em Inglês | MEDLINE | ID: mdl-37764507

RESUMO

Oxidative stress and hyperlipidemia are important factors for the initiation and progression of various cell degenerative pathological conditions, including cardiovascular and neurological diseases. A series of cinnamic acid-derived acids, such as ferulic acid, sinapic acid, 3,4-dimethoxycinnamic acid, p-coumaric acid, and (E)-3-(3,5-di-tert-butyl-4-hydroxyphenyl)acrylic acid, were esterified or amidated with various moieties, bearing different biological activities, and evaluated. The antioxidant and radical scavenging abilities of the compounds via inhibition of rat hepatic microsomal membrane lipid peroxidation, as well as their interaction with the stable radical 2,2-diphenyl-1-picrylhydrazyl (DPPH), were assessed. Further, their hypolipidemic activity in vivo was tested. The majority of the obtained compounds demonstrated considerable radical scavenging and antioxidant action, with a parallel decrease in Triton-induced hyperlipidemia in rats. The (E)-3-(3,5-di-tert-butyl-4-hydroxyphenyl)acrylic acid derivative with morpholine and 4-methylpiperidine (compounds 4 and 13, respectively) significantly decreased triglycerides and total cholesterol in the plasma of hyperlipidemic rats, with an antioxidant capacity similar to that of the antioxidant Trolox. The compounds were designed to exhibit antioxidant and hypolipidemic pharmacological actions, and this succeeded for the majority of them. Thus, such agents may be of interest in conditions and diseases implicating oxidative stress and dyslipidemia.

5.
Ceska Slov Farm ; 72(2): 70-78, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37211427

RESUMO

The concept of pharmaceutical care (PC) has existed as a professional philosophy for more than 30 years. However, for a long period of time, little had been done for its integration into the regular practice of healthcare provision. The COVID-19 pandemic and the resulting increase in patient influx in the community pharmacies (CP) encouraged the exploration and establishment of new healthcare services provided within the CP. Nevertheless, these services of PC are still novel, and more can be done to expand the community pharmacists' current role in primary healthcare. This can be achieved by improving and expanding the newly established services, all while incorporating new ones, for the benefit of public health and the reduction of avoidable healthcare expenditures. This article reviews information about the benefits of this service regarding patient health and the reduction of financial expenses pertinent to adverse drug events within the setting of the CP. Adverse drug events account for significant healthcare expenses and patient distress due to relevant symptoms, emergency doctor visits, and increased hospitalization rates. Several studies conducted internationally have investigated the positive impact of PC practiced by community pharmacists. In spite of results sometimes presenting a non-continuous pattern, PC applied under specific conditions has tangible positive outcomes. Congestive heart failure and type 2 diabetes mellitus patients presented fewer hospital admissions, better symptom control, and higher adherence in comparison to control groups, while a study on asthma patients revealed improved inhalation techniques. All intervention groups reported psychological improvement and a better understanding of their treatment. Special reference is made to the importance of this service for patients receiving anti-cancer treatment and how community pharmacists can have a crucial role in designing, monitoring, and re-designing these therapeutic schemes whose complexity and related adverse drug events negatively affect patient adherence. The role of community pharmacists was very important, especially for primary care, for both patients and healthcare systems during the pandemic, and it seems that it will remain decisive in the post-COVID era as well. The increased complexity of therapy and polypharmacy creates the need for organized, active participation of pharmacists in healthcare provision so that they can use their knowledge and skills under continuous cooperation with other healthcare professionals, thus providing coordinated services for the benefit of the patient.


Assuntos
COVID-19 , Serviços Comunitários de Farmácia , Diabetes Mellitus Tipo 2 , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Farmácias , Humanos , Pandemias , COVID-19/epidemiologia , Farmacêuticos/psicologia
6.
Molecules ; 27(23)2022 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-36500494

RESUMO

Multiple sclerosis (MS) is a complex neurodegenerative disease. Although its pathogenesis is rather vague in some aspects, it is well known to be an inflammatory process characterized by inflammatory cytokine release and oxidative burden, resulting in demyelination and reduced remyelination and axonal survival together with microglial activation. Antioxidant compounds are gaining interest towards the manipulation of MS, since they offer, in most of the cases, many benefits, due to their pleiotropical activity, that mainly derives from the oxidative stress decrease. This review analyzes research articles, of the last decade, which describe biological in vitro, in vivo and clinical evaluation of various categories of the most therapeutically applied natural antioxidant compounds, and some of their derivatives, with anti-MS activity. It also summarizes some of the main characteristics of MS and the role the reactive oxygen and nitrogen species may have in its progression, as well as their relation with the other mechanistic aspects of the disease, in order for the multi-targeting potential of those antioxidants to be defined and the source of origination of such activity explained. Antioxidant compounds with specific characteristics are expected to affect positively some aspects of the disease, and their potential may render them as effective candidates for neurological impairment reduction in combination with the MS treatment regimen. However, more studies are needed in order such antioxidants to be established as recommended treatment to MS patients.


Assuntos
Esclerose Múltipla , Doenças Neurodegenerativas , Humanos , Antioxidantes/farmacologia , Antioxidantes/uso terapêutico , Antioxidantes/metabolismo , Esclerose Múltipla/tratamento farmacológico , Esclerose Múltipla/patologia , Doenças Neurodegenerativas/tratamento farmacológico , Estresse Oxidativo/fisiologia , Oxirredução
7.
Molecules ; 27(20)2022 Oct 17.
Artigo em Inglês | MEDLINE | ID: mdl-36296574

RESUMO

Alzheimer's Disease (AD) is a common neurodegenerative disorder characterized by memory loss and cognitive impairment. Its pathology has not been fully clarified and therefore highly effective treatments have not been obtained yet. Almost all the current treatment options aim to alleviate only the symptoms and not to eliminate the disease itself. Acetylcholinesterase inhibitors are the main therapeutic agents against AD, whereas oxidative stress and inflammation have been found to be of great significance for the development and progression of neurodegeneration. In this work, ethyl nipecotate (ethyl-piperidine-3-carboxylate), a heterocyclic carboxylic acid derivative, which acts as a GABA reuptake inhibitor and has been used in research for diseases involving GABAergic neurotransmission dysfunction, was amidated with various carboxylic acids bearing antioxidant and/or anti-inflammatory properties (e.g., ferulic acid, sinapic acid, butylated hydroxycinnamic acid). Most of our compounds have significant antioxidant potency as lipid peroxidation inhibitors (IC50 as low as 20 µΜ), as oxidative protein glycation inhibitors (inhibition up to 57%), and act as DPPH reducing agents. Moreover, our compounds are moderate LOX inhibitors (up to 33% at 100 µΜ) and could reduce rat paw edema induced by carrageenan by up to 61%. Finally, some of them possessed inhibitory activity against acetylcholinesterase (IC50 as low as to 47 µΜ). Our results indicate that our compounds could have the potentiality for further optimization as multi-targeting agents directed against AD.


Assuntos
Doença de Alzheimer , Ácidos Cumáricos , Animais , Ratos , Ácidos Cumáricos/uso terapêutico , Inibidores da Colinesterase/química , Acetilcolinesterase/metabolismo , Antioxidantes/química , Carragenina/uso terapêutico , Inibidores da Captação de GABA/uso terapêutico , Substâncias Redutoras , Doença de Alzheimer/tratamento farmacológico , Doença de Alzheimer/metabolismo , Ácidos Nipecóticos/uso terapêutico , Piperidinas/uso terapêutico , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/uso terapêutico
8.
Molecules ; 27(7)2022 Mar 24.
Artigo em Inglês | MEDLINE | ID: mdl-35408503

RESUMO

The synthesis of derivatives of three nonspecific COX-1 and COX-2 inhibitors, ibuprofen, ketoprofen, naproxen is presented. These acids were connected via an amide bond with an amino acid (L-proline, L-tyrosine, and beta-alanine) used as a linker. The amino acid carboxylic group was esterified with 3,4,5 trimethoxybenzyl alcohol. The activity of the novel derivatives was examined in vivo on carrageenan-induced inflammation, and in vitro, as cyclooxygenase and lipoxygenase inhibitors. It was found that the new compounds were more potent anti-inflammatory agents than the parent drugs. Thus, the ibuprofen (21) and ketoprofen (16) derivatives reduced rat paw edema by 67 and 91% (the reduction by the relevant NSAIDs was 36 and 47%, respectively). They inhibited COX-2 more than the starting drugs (21 by 67%, ibuprofen 46%, 19 by 94%, ketoprofen 49%). Docking of compounds on the active sites of COX-1 and COX-2 reflects their in vitro activity. Thus, 19 adopts an unfavorable orientation for COX-1 inhibition, but it binds effectively in the binding pocket of COX-2, in agreement with the absence of activity for COX-1 and the high inhibition of COX-2. In conclusion, the performed structural modifications result in the enhancement of the anti-inflammatory activity, compared with the parent NSAIDs.


Assuntos
Anti-Inflamatórios não Esteroides , Cetoprofeno , Aminoácidos/uso terapêutico , Animais , Anti-Inflamatórios/uso terapêutico , Anti-Inflamatórios não Esteroides/química , Carragenina/efeitos adversos , Ciclo-Oxigenase 1 , Ciclo-Oxigenase 2/metabolismo , Inibidores de Ciclo-Oxigenase 2/farmacologia , Edema/induzido quimicamente , Edema/tratamento farmacológico , Ibuprofeno/farmacologia , Ibuprofeno/uso terapêutico , Simulação de Acoplamento Molecular , Ratos
9.
Mol Biol Rep ; 48(9): 6539-6550, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34420148

RESUMO

Lipoic acid (LA) is globally known and its supplements are widely used. Despite its importance for the organism it is not considered a vitamin any more. The multiple metabolic forms and the differences in kinetics (absorption, distribution and excretion), as well as the actions of its enantiomers are analysed in the present article together with its biosynthetic path. The proteins involved in the transfer, biotransformation and activity of LA are mentioned. Furthermore, the safety and the toxicological profile of the compound are commented, together with its stability issues. Mechanisms of lipoic acid intervention in the human body are analysed considering the antioxidant and non-antioxidant characteristics of the compound. The chelating properties, the regenerative ability of other antioxidants, the co-enzyme activity and the signal transduction by the implication in various pathways will be discussed in order to be elucidated the pleiotropic effects of LA. Finally, lipoic acid integrating analogues are mentioned under the scope of the multiple pharmacological actions they acquire towards degenerative conditions.


Assuntos
Anti-Inflamatórios/metabolismo , Antioxidantes/metabolismo , Antipsicóticos/metabolismo , Quelantes/metabolismo , Hipnóticos e Sedativos/metabolismo , Hipoglicemiantes/metabolismo , Agentes de Imunomodulação/metabolismo , Ácido Tióctico/análogos & derivados , Ácido Tióctico/metabolismo , Animais , Anti-Inflamatórios/efeitos adversos , Anti-Inflamatórios/química , Antioxidantes/efeitos adversos , Antioxidantes/química , Antipsicóticos/efeitos adversos , Antipsicóticos/química , Quelantes/efeitos adversos , Quelantes/química , Suplementos Nutricionais , Humanos , Hipnóticos e Sedativos/efeitos adversos , Hipnóticos e Sedativos/química , Hipoglicemiantes/efeitos adversos , Hipoglicemiantes/química , Agentes de Imunomodulação/efeitos adversos , Agentes de Imunomodulação/química , Cinética , Oxirredução , Transdução de Sinais , Ácido Tióctico/efeitos adversos , Ácido Tióctico/química
10.
Molecules ; 26(13)2021 Jul 02.
Artigo em Inglês | MEDLINE | ID: mdl-34279399

RESUMO

A series of L-serine amides of antioxidant acids, such as Trolox, (E)-3-(3,5-di-tert-butyl-4-hydroxyphenyl)acrylic acid (phenolic derivative of cinnamic acid) and 3,5-di-tert-butyl-4-hydroxybenzoic acid (structurally similar to butylated hydroxytoluene), was synthesized. The hydroxy group of serine was esterified with two classical NSAIDs, ibuprofen and ketoprofen. The Trolox derivatives with ibuprofen (7) and ketoprofen (10) were the most potent inhibitors of lipid peroxidation (IC50 3.4 µΜ and 2.8 µΜ), several times more potent than the reference Trolox (IC50 25 µΜ). Most of the compounds decreased carrageenan-induced rat paw edema (37-67% at 150 µmol/kg). They were moderate inhibitors of soybean lipoxygenase, with the exception of ibuprofen derivative 8 (IC50 13 µΜ). The most active anti-inflammatory compounds exhibited a significant decrease in lipidemic indices in the plasma of Triton-induced hyperlipidemic rats, e.g., the most active compound 9 decreased triglycerides, total cholesterol and low-density lipoprotein cholesterol by 52%, 61% and 70%, respectively, at 150 µmol/kg (i.p.), similar to that of simvastatin, a well-known hypocholesterolemic drug. Since the designed compounds seem to exhibit multiple pharmacological actions, they may be of use for the development of agents against inflammatory and degenerative conditions.


Assuntos
Anti-Inflamatórios não Esteroides/síntese química , Antioxidantes/síntese química , Hipolipemiantes/síntese química , Inibidores de Lipoxigenase/síntese química , Animais , Anti-Inflamatórios não Esteroides/farmacocinética , Anti-Inflamatórios não Esteroides/uso terapêutico , Antioxidantes/farmacocinética , Antioxidantes/uso terapêutico , Carragenina/toxicidade , Colesterol/sangue , Edema/tratamento farmacológico , Edema/etiologia , Esterificação , Hiperlipidemias/tratamento farmacológico , Hipolipemiantes/farmacocinética , Hipolipemiantes/uso terapêutico , Inibidores de Lipoxigenase/farmacocinética , Inibidores de Lipoxigenase/uso terapêutico , Ratos , Ratos Wistar , Serina/química , Triglicerídeos/sangue
11.
Molecules ; 24(18)2019 Sep 09.
Artigo em Inglês | MEDLINE | ID: mdl-31505754

RESUMO

Novel derivatives of some non steroidal anti-inflammatory drugs, as well as of the antioxidants α-lipoic acid, trolox and (E)-3-(3,5-di-tert-butyl-4-hydroxyphenyl)acrylic acid with lorazepam were synthesised by a straightforward method at satisfactory to high yields (40%-93%). All the tested derivatives strongly decreased lipidemic indices in rat plasma after Triton induced hyperlipidaemia. They also reduced acute inflammation and a number of them demonstrated lipoxygenase inhibitory activity. Those compounds acquiring antioxidant moiety were inhibitors of lipid peroxidation and radical scavengers. Therefore, the synthesised compounds may add to the current knowledge about multifunctional agents acting against various disorders implicating inflammation, dyslipidaemia and oxidative stress.


Assuntos
Hiperlipidemias/tratamento farmacológico , Inflamação/tratamento farmacológico , Lorazepam/farmacologia , Estresse Oxidativo/efeitos dos fármacos , Acrilatos/farmacologia , Animais , Anti-Inflamatórios não Esteroides/química , Anti-Inflamatórios não Esteroides/farmacologia , Antioxidantes/química , Antioxidantes/farmacologia , Carragenina/química , Carragenina/farmacologia , Cromanos/química , Cromanos/farmacologia , Humanos , Hiperlipidemias/patologia , Hipolipemiantes/química , Hipolipemiantes/farmacologia , Peroxidação de Lipídeos/efeitos dos fármacos , Inibidores de Lipoxigenase/farmacologia , Lorazepam/análogos & derivados , Ratos , Ácido Tióctico/análogos & derivados , Ácido Tióctico/farmacologia
12.
Molecules ; 25(1)2019 Dec 19.
Artigo em Inglês | MEDLINE | ID: mdl-31861583

RESUMO

Inflammation and oxidative stress are involved in cardiovascular diseases. Nitrogen monoxide participates in the regulation of endothelial processes. Thus, derivatives of classic nonsteroidal anti-inflammatory drugs (NSAIDs), trolox or cinnamic acids esterified with 2-(nitrooxy)ethanol were designed and studied. It was found that the nitrogen monoxide (NO) releasing activity was comparable to that of S-nitroso-N-acetylpenicillamine. The nitrooxy derivatives decreased potently lipid indices in the plasma of hyperlipidaemic rats (30-85%). All compounds presented increased anti-inflammatory activity in vivo, inhibiting carrageenan-induced rat paw oedema as high as 76%, up to six times higher than that of the parent acids. Lipoxygenase inhibitory activity was significant for most of them, although the parent molecules exerted a minor effect (IC50 > 0.2 mM). Those compounds incorporating an antioxidant structure inhibited rat microsomal membrane lipid peroxidation strongly and possessed radical scavenging activity. These results indicated that the described compounds could act at different targets in multifactorial diseases, further limiting the possible adverse effects of drug combinations.


Assuntos
Anti-Inflamatórios/síntese química , Antioxidantes/síntese química , Cromanos/química , Cinamatos/química , Inflamação/tratamento farmacológico , Doadores de Óxido Nítrico/síntese química , Animais , Anti-Inflamatórios/química , Anti-Inflamatórios/farmacologia , Antioxidantes/química , Antioxidantes/farmacologia , Carragenina/efeitos adversos , Modelos Animais de Doenças , Esterificação , Inflamação/metabolismo , Peroxidação de Lipídeos/efeitos dos fármacos , Lipoxigenase/genética , Estrutura Molecular , Doadores de Óxido Nítrico/química , Doadores de Óxido Nítrico/farmacologia , Ratos
13.
Bioorg Med Chem Lett ; 27(21): 4800-4804, 2017 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-29017787

RESUMO

Novel amide derivatives of trolox, 3,5-di-tert-butyl-4-hydroxybenzoic acid, (E)-3-(3,5-di-tert-butyl-4-hydroxyphenyl)acrylic acid and cinnamic acid with cysteamine and l-cysteine ethyl ester were synthesised. In four cases, the disulfide derivatives were also isolated and tested. All compounds were examined for antioxidant activity, expressed as their ability to inhibit lipid peroxidation and to scavenge free radicals. They were found to demonstrate up to 17-fold better activity than that of the parent antioxidant acids. They could reduce acute inflammation up to 87%. The most active antioxidant compounds were further tested for their in vivo hypolipidemic effect, which ranged from 47% to 73%, and for their ability to protect the liver against oxidative toxicity caused by high paracetamol dose. The disulfide derivatives of 3,5-di-tert-butyl-4-hydroxybenzoic acid and cinnamic acid had no antioxidant activity and presented equal or lower anti-inflammatory effect than their thiol analogues, indicating that their molecular characteristics may not permit biological barrier penetration.


Assuntos
Anti-Inflamatórios/química , Antioxidantes/química , Substâncias Protetoras/química , Acetaminofen/toxicidade , Animais , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/uso terapêutico , Antioxidantes/síntese química , Antioxidantes/farmacologia , Butanos/química , Carragenina/toxicidade , Doença Hepática Induzida por Substâncias e Drogas/metabolismo , Doença Hepática Induzida por Substâncias e Drogas/patologia , Cisteína/análogos & derivados , Cisteína/química , Edema/induzido quimicamente , Edema/prevenção & controle , Radicais Livres/química , Hiperlipidemias/tratamento farmacológico , Hiperlipidemias/patologia , Peroxidação de Lipídeos/efeitos dos fármacos , Estresse Oxidativo/efeitos dos fármacos , Parabenos/química , Substâncias Protetoras/síntese química , Substâncias Protetoras/farmacologia , Ratos
14.
Bioorg Med Chem Lett ; 26(3): 910-913, 2016 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-26750253

RESUMO

Novel amides of non steroidal anti-inflammatory drugs (NSAIDs), α-lipoic acid and indole-3-acetic acid with thiomorpholine were synthesised by a simple method and at high yields (60-92%). All the NSAID derivatives highly decreased lipidemic indices in the plasma of Triton treated hyperlipidemic rats. The most potent compound was the indomethacin derivative, which decreased total cholesterol, triglycerides and LDL cholesterol by 73%, 80% and 83%, respectively. They reduced acute inflammation equally or more than most parent acids. Hence, it could be concluded that amides of common NSAIDs with thiomorpholine acquire considerable hypolipidemic potency, while they preserve or augment their anti-inflammatory activity, thus addressing significant risk factors for atherogenesis.


Assuntos
Amidas/química , Anti-Inflamatórios não Esteroides/química , Hipolipemiantes/química , Morfolinas/química , Amidas/uso terapêutico , Animais , Colesterol/sangue , LDL-Colesterol/sangue , Edema/induzido quimicamente , Edema/tratamento farmacológico , Hiperlipidemias/tratamento farmacológico , Hiperlipidemias/patologia , Hipolipemiantes/uso terapêutico , Ratos , Triglicerídeos/sangue
15.
Bioorg Med Chem Lett ; 25(22): 5028-31, 2015 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-26494261

RESUMO

Novel esters of non steroidal anti-inflammatory drugs, α-lipoic acid and indol-3-acetic acid with cinnamyl alcohol were synthesised by a straightforward method and at high yields (60-98%). They reduced acute inflammation more than the parent acids and are potent inhibitors of soybean lipoxygenase. Selected structures decreased plasma lipidemic indices in Triton-induced hyperlipidemia to rats. Therefore, the synthesised compounds may add to the current knowledge about agents acting against various inflammatory disorders.


Assuntos
Anti-Inflamatórios não Esteroides/farmacologia , Cinamatos/farmacologia , Inibidores de Lipoxigenase/farmacologia , Propanóis/química , Propionatos/farmacologia , Animais , Anti-Inflamatórios não Esteroides/síntese química , Anti-Inflamatórios não Esteroides/uso terapêutico , Carragenina , Cinamatos/síntese química , Cinamatos/uso terapêutico , Edema/induzido quimicamente , Edema/tratamento farmacológico , Ésteres , Hiperlipidemias/induzido quimicamente , Hiperlipidemias/tratamento farmacológico , Ácidos Indolacéticos/química , Inibidores de Lipoxigenase/síntese química , Inibidores de Lipoxigenase/uso terapêutico , Polietilenoglicóis , Propionatos/síntese química , Propionatos/uso terapêutico , Ratos , Glycine max , Ácido Tióctico/química
16.
Arch Pharm (Weinheim) ; 348(9): 629-34, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26191791

RESUMO

A number of thiomorpholine derivatives that are structurally similar to some substituted morpholines possessing antioxidant and hypocholesterolemic activity were synthesized. The new compounds incorporate an antioxidant moiety as the thiomorpholine N-substituent. The derivatives were found to inhibit the ferrous/ascorbate-induced lipid peroxidation of microsomal membrane lipids, with IC50 values as low as 7.5 µΜ. In addition, these compounds demonstrate hypocholesterolemic and hypolipidemic action. The most active compound (5) decreases the triglyceride, total cholesterol, and low-density lipoprotein levels in the plasma of Triton WR-1339-induced hyperlipidemic rats, by 80, 78, and 76%, respectively, at 56 mmol/kg (i.p.). They may also act as squalene synthase inhibitors. The above results indicate that the new molecules may be useful as leads for the design of novel compounds as potentially antiatherogenic factors.


Assuntos
Anticolesterolemiantes/síntese química , Anticolesterolemiantes/farmacologia , Antioxidantes/síntese química , Antioxidantes/farmacologia , Hiperlipidemias/tratamento farmacológico , Morfolinas/síntese química , Morfolinas/farmacologia , Animais , Biomarcadores/sangue , Colesterol/sangue , Modelos Animais de Doenças , Relação Dose-Resposta a Droga , Desenho de Fármacos , Inibidores Enzimáticos/síntese química , Inibidores Enzimáticos/farmacologia , Farnesil-Difosfato Farnesiltransferase/antagonistas & inibidores , Farnesil-Difosfato Farnesiltransferase/metabolismo , Hiperlipidemias/sangue , Hiperlipidemias/induzido quimicamente , Peroxidação de Lipídeos/efeitos dos fármacos , Lipoproteínas LDL/sangue , Estrutura Molecular , Polietilenoglicóis , Ratos , Relação Estrutura-Atividade , Triglicerídeos/sangue
17.
Mini Rev Med Chem ; 2024 Jun 24.
Artigo em Inglês | MEDLINE | ID: mdl-38918988

RESUMO

Parkinson's Disease (PD) is the most common neurodegenerative disorder after Alzheimer's Disease and is clinically expressed by movement disorders, such as tremor, bradykinesia, and rigidity. It occurs mainly in the extrapyramidal system of the brain and is characterized by dopaminergic neuron degeneration. L-DOPA, dopaminergic agonists, anticholinergic drugs, and MAO-B inhibitors are currently used as therapeutic agents against PD, however, they have only symptomatic efficacy, mainly due to the complex pathophysiology of the disease. This review summarizes the main aspects of PD pathology, as well as, discusses the most important biochemical dysfunctions during PD, and presents novel multi-targeting compounds, which have been tested for their activity against various targets related to PD. This review selects various research articles from main databases concerning multi-targeting compounds against PD. Molecules targeting more than one biochemical pathway involved in PD, expected to be more effective than the current treatment options, are discussed. A great number of research groups have designed novel compounds following the multi-targeting drug approach. They include structures combining antioxidant, antiinflammatory, and metal-chelating properties. These compounds could be proven useful for effective multi-targeted PD treatment. Multi-targeting drugs could be a useful tool for the design of effective antiparkinson agents. Their efficacy towards various targets implicated in PD could be the key to the radical treatment of this neurodegenerative disorder.

18.
Mol Med Rep ; 29(6)2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38606791

RESUMO

Obesity reaches up to epidemic proportions globally and increases the risk for a wide spectrum of co­morbidities, including type­2 diabetes mellitus (T2DM), hypertension, dyslipidemia, cardiovascular diseases, non­alcoholic fatty liver disease, kidney diseases, respiratory disorders, sleep apnea, musculoskeletal disorders and osteoarthritis, subfertility, psychosocial problems and certain types of cancers. The underlying inflammatory mechanisms interconnecting obesity with metabolic dysfunction are not completely understood. Increased adiposity promotes pro­inflammatory polarization of macrophages toward the M1 phenotype, in adipose tissue (AT), with subsequent increased production of pro­inflammatory cytokines and adipokines, inducing therefore an overall, systemic, low­grade inflammation, which contributes to metabolic syndrome (MetS), insulin resistance (IR) and T2DM. Targeting inflammatory mediators could be alternative therapies to treat obesity, but their safety and efficacy remains to be studied further and confirmed in future clinical trials. The present review highlights the molecular and pathophysiological mechanisms by which the chronic low­grade inflammation in AT and the production of reactive oxygen species lead to MetS, IR and T2DM. In addition, focus is given on the role of anti­inflammatory agents, in the resolution of chronic inflammation, through the blockade of chemotactic factors, such as monocytes chemotractant protein­1, and/or the blockade of pro­inflammatory mediators, such as IL­1ß, TNF­α, visfatin, and plasminogen activator inhibitor­1, and/or the increased synthesis of adipokines, such as adiponectin and apelin, in obesity­associated metabolic dysfunction.


Assuntos
Diabetes Mellitus Tipo 2 , Resistência à Insulina , Síndrome Metabólica , Humanos , Obesidade/metabolismo , Síndrome Metabólica/complicações , Síndrome Metabólica/metabolismo , Inflamação/metabolismo , Adipocinas/metabolismo , Tecido Adiposo/metabolismo , Diabetes Mellitus Tipo 2/metabolismo , Mediadores da Inflamação/metabolismo
19.
Antioxidants (Basel) ; 12(7)2023 Jul 17.
Artigo em Inglês | MEDLINE | ID: mdl-37507974

RESUMO

A series of thiomorpholine and cinnamyl alcohol derivatives, conjugated with cinnamic acid-containing moieties, such as ferulic acid, sinapic acid and 3,4-dimethoxycinnamic acid, were synthesized and tested for their antioxidant, anti-inflammatory and hypolipidemic properties. An indomethacin ester with 2,6-di-tert-butyl-4-(hydroxymethyl)phenol was also prepared for reasons of comparison. The majority of the compounds demonstrated considerable antioxidant capacity and radical scavenging activity, reaching up to levels similar to the well-known antioxidant trolox. Some of them had an increased anti-inflammatory effect on the reduction of carrageenan-induced rat paw edema (range 17-72% at 150 µmol/kg), having comparable activity to the NSAIDs (non-steroidal anti-inflammatory drugs) used as reference. They had moderate activity in soybean lipoxygenase inhibition. All the tested compounds exhibited a significant decrease in lipidemic indices in Triton-induced hyperlipidemia in rats, whilst the most active triglycerides and total cholesterol decreased by 72.5% and 76%, respectively, at 150 µmol/kg (i.p.), slightly better than that of simvastatin, a well-known hypocholesterolemic drug, but with negligible triglyceride-lowering effect. Since our designed compounds seem to exhibit multiple pharmacological activities, they may be of use in occasions involving inflammation, oxidative stress, lipidemic deregulation and degenerative conditions.

20.
Psychiatriki ; 33(2): 113-123, 2022 Jun 10.
Artigo em El | MEDLINE | ID: mdl-34390565

RESUMO

Although the relationship of mental health with cardiovascular dysfunction is not a recent finding, scientific data has appeared approximately at the middle of the last century. Firstly, depression was studied as a risk factor for premature death in cases of cardiovascular disease (CVD). Much later, the mechanism of psychosis and schizophrenia in the development of CVD were studied, as it was observed that most premature deaths in schizophrenia were related to cardiovascular disease. This interaction is supported both by epidemiological data and by the associated mechanisms. Inflammation, oxidative and biologic stress, and hormonal and neurotransmitter disorders in coagulation, tissue perfusion, vascular dysfunction and genetic factors get involved in these mental disorders. The combination of these pathophysiological mechanisms and the general risk factors for CVD (sex, age, smoking, systolic blood pressure, body weight, glucose levels) leads, to some extent, to increased rates of comorbidity and mortality. Patients with severe mental disorders are often not monitored and do not receive appropriate treatment for cardiovascular risk factors. In studies of patients with comorbid coronary heart disease and depression, there were signs of cardiovascular dysfunction, including increased heart rate, mainly in stress, QT prolongation and ventricular arrhythmia. At the same time, there is a dose-response relationship between the severity of depression and cardiovascular risk, with the presence of even mild symptoms of untreated depression involving some cardiovascular risk. In addition, improving the symptoms of depression through medication has been associated with increased survival. Moreover, the causes of increased mortality in patients with schizophrenia are similar to those of the general population with metabolic syndrome and diabetes mellitus, while failure to receive antipsychotic medication could lead to obesity, insulin resistance, dyslipidemia and hypertension. These data could be used as a source for future anti-inflammatory therapeutic approaches, but also for the appropriate selection of therapeutic agents, by taking a more holistic view of the patient's comorbidity. The interdisciplinary collaboration and liaison - consultation psychiatry are important factors for the timely prevention, recognition and treatment of potent complications of the cardiovascular system in mentally ill patients. The aim of this review was to present the pathophysiological mechanisms of serious mental disorders, such as depression, bipolar disorder, and schizophrenia that may be related to the development of CVD.


Assuntos
Antipsicóticos , Transtorno Bipolar , Doenças Cardiovasculares , Transtornos Mentais , Esquizofrenia , Antipsicóticos/efeitos adversos , Transtorno Bipolar/tratamento farmacológico , Doenças Cardiovasculares/induzido quimicamente , Doenças Cardiovasculares/etiologia , Humanos , Transtornos Mentais/diagnóstico , Transtornos Mentais/epidemiologia , Transtornos Mentais/etiologia , Fatores de Risco , Esquizofrenia/tratamento farmacológico
SELEÇÃO DE REFERÊNCIAS
Detalhe da pesquisa