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1.
J Clin Med ; 12(14)2023 Jul 11.
Artigo em Inglês | MEDLINE | ID: mdl-37510734

RESUMO

Cannabis-derived therapies are gaining popularity in the medical world. More and more perfect forms of cannabinoids are sought, which could be used in the treatment of many common diseases, including metabolic syndrome, whose occurrence is also increasing. The purpose of this review was to investigate the usefulness of cannabinoids, mainly cannabidiol (CBD), in individuals with obesity, impaired glucose and lipid metabolism, high blood pressure, and non-alcoholic fatty liver disease (NAFLD). We summarised the most recent research on the broad topic of cannabis-derived influence on metabolic syndrome components. Since there is a lot of work on the effects of Δ9-THC (Δ9-tetrahydrocannabinol) on metabolism and far less on cannabidiol, we felt it needed to be sorted out and summarised in this review. The research results on the use of cannabidiol in obesity are contraindicatory. When it comes to glucose homeostasis, it appears that CBD maintains it, sensitises adipose tissue to insulin, and reduces fasting glucose levels, so it seems to be a potential target in this kind of metabolic disorder, but some research results are inconclusive. CBD shows some promising results in the treatment of various lipid disorders. Some studies have proven its positive effect by decreasing LDL and increasing HDL as well. Despite their probable efficacy, CBD and its derivatives will likely remain an adjunctive treatment rather than a mainstay of therapy. Studies have also shown that CBD in patients with hypertension has positive effects, even though the hypotensive properties of cannabidiol are small. However, CBD can be used to prevent blood pressure surges, stabilise them, and have a protective effect on blood vessels. Results from preclinical studies have shown that the effect of cannabidiol on NAFLD may be potentially beneficial in the treatment of the metabolic syndrome and its components. Nevertheless, there is limited data on CBD and NAFLD in human studies. Because of the numerous confounding factors, the conclusions are unclear, and more research in this field is required.

2.
Int J Mol Sci ; 24(12)2023 Jun 19.
Artigo em Inglês | MEDLINE | ID: mdl-37373502

RESUMO

The phenomena of ischemia and reperfusion are associated with the pathological background of cardiovascular diseases. Ischemia is initiated by ischemia reperfusion injury (IRI), which involves disruption of intracellular signaling pathways and causes cell death. The aim of this study was to assess the reactivity of vascular smooth muscle cells in the conditions of induced ischemia and reperfusion, and to determine the mechanisms leading to contractility disorders. This study was conducted using classical pharmacometric methods on an isolated model of the rat caudal artery. The experiment consisted of the analysis of the final and initial perfusate pressure measurements after induction of arterial contraction with phenylephrine in the presence of forskolin and A7 hydrochloride, two ligands modifying the contractility of vascular smooth muscle cells (VSMC). The pharmacometric analysis showed that in simulated reperfusion, cyclic nucleotides have a vasoconstrictive effect, and calmodulin has a vasodilating effect. The responsiveness of vascular smooth muscle cells to the vasopressor effects of α1-adrenomimetics during reperfusion may change uncontrollably, and the effects of secondary messengers may be counter physiological. Further studies are needed to evaluate the function of other second messengers on VSMCs in the process of ischemia and reperfusion.


Assuntos
AMP Cíclico , Traumatismo por Reperfusão , Ratos , Animais , AMP Cíclico/metabolismo , Calmodulina/metabolismo , Reperfusão , Vasoconstritores/farmacologia , Traumatismo por Reperfusão/tratamento farmacológico , Isquemia
3.
Biology (Basel) ; 12(4)2023 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-37106732

RESUMO

The benefits of physical activity and sports are widely known and proved to be crucial for overall health and well-being. In this research, the authors decided to measure the impact of endurance training in a professional male rowing team on the serum concentration levels of testosterone, estradiol, sex hormone binding globulin (SHBG) and nitric oxide (NO) and apolipoprotein A1 (Apo-A1). Proper levels of the serum concentration are necessary in order to maintain physical effectiveness. Authors analyzed the data and reviewed the former conterminous articles to find the possible mechanisms leading to changes of serum concentration of certain hormones and molecules. The direct effect of physical activity was a decrease in testosterone serum concentration (from 7.12 ± 0.4 to 6.59 ± 0.35 (ng/mL)), sex hormone binding globulin serum concentration (from 39.50 ± 2.48 to 34.27 ± 2.33 (nmol/L)), nitric oxide serum concentration (from 440.21 ± 88.64 to 432 ± 91.89 (ng/mL)), increase in estradiol serum concentration (from 78.2 ± 11.21 to 83.01 ± 13.21 (pg/mL)) and no significant increase in Apo-A1 serum concentration (from 2.63 ± 0.2 to 2.69 ± 0.21 (mg/mL)). Low testosterone concentration in OTS may be a consequence of increased conversion to estradiol, because gonadotropic stimulation is maintained. Apo-A1 serum concentration was measured due to a strong connection with testosterone level and its possible impact of decreasing cardiovascular risk.

4.
Diagnostics (Basel) ; 13(7)2023 Apr 05.
Artigo em Inglês | MEDLINE | ID: mdl-37046572

RESUMO

(1) Objective: We aimed to evaluate the effect of treatment with prednisone on nasal and systemic periostin and eotaxin expression, IgE in plasma and eosinophils in tissue. (2) Methods: We compared the values of nasal and systemic periostin, eotaxin, IgE and eosinophils in tissue in patients treated with only nasal steroids before FESS, group 1, with those treated with an oral steroid-prednisone, group 2. (3) Results: A statistically significant decrease in the level of periostin, eotaxin and IgE in plasma was achieved in patients treated with prednisone one week before and after surgery (in sequence: p < 0.0476, p < 0.0006, p < 0.0031). In patients treated with steroids, we also observed a lower level of periostin in the epithelium (p < 0.044), eotaxin in the stroma (p limit value < 0.075) and eosinophils (p < 0.031) in the tissues collected during the operation. (4) Conclusions: Systemic steroid treatment with prednisone distinctly decreases periostin, eotaxin and IgE expression in plasma. We also observed a lower level of periostin in the epithelium, eotaxin in the stroma and eosinophils in the tissues. We need more attempts to find inflammatory markers associated with chronic rhinosinusitis. Identifying drugs that decrease inflammatory parameters would allow for more targeted therapy.

5.
Curr Issues Mol Biol ; 43(3): 1606-1622, 2021 Oct 14.
Artigo em Inglês | MEDLINE | ID: mdl-34698104

RESUMO

In view of research suggesting a possible beneficial impact of vitamin D on systemic inflammatory response, the authors decided to investigate an influence of vitamin D supplementation on serum levels of certain inflammatory markers in obese patients. The current study included such biomarkers as interleukin-6 (IL-6), pituitary adenylate cyclase-activating peptide (PACAP), advanced oxidation protein products (AOPP), C-X3-C Motif Chemokine Ligand 1 (CX3CL1), monocyte chemoattractant protein-1 (MCP-1), and nitric oxide (NO). The measurements were performed with the ELISA method before and after 3-month-long supplementation of 2000 IU of vitamin D orally. The results showed that the therapy did not induce any statistically significant changes in serum levels of MCP-1, IL-6, CX3CL1, and PACAP. The supplementation was related to a significant increase in measurements of NO and AOPP levels, although the correlation analysis between vitamin D concentration after its supplementation and the concentration of the molecular parameters did not show significant relation. In conclusion, our study seems to contradict certain aspects of findings available in the literature regarding the vitamin D's impact.


Assuntos
Biomarcadores/sangue , Suplementos Nutricionais , Avaliação do Impacto na Saúde , Mediadores da Inflamação/sangue , Obesidade/sangue , Vitamina D/administração & dosagem , Pesos e Medidas Corporais , Suscetibilidade a Doenças , Feminino , Humanos , Masculino , Obesidade/diagnóstico , Obesidade/etiologia , Tamanho do Órgão
6.
Nutrients ; 13(8)2021 Jul 22.
Artigo em Inglês | MEDLINE | ID: mdl-34444666

RESUMO

The rise in energy drink (ED) intake in the general population and athletes has been achieved with smart and effective marketing strategies. There is a robust base of evidence showing that adolescents are the main consumers of EDs. The prevalence of ED usage in this group ranges from 52% to 68%, whilst in adults is estimated at 32%. The compositions of EDs vary widely. Caffeine content can range from 75 to 240 mg, whereas the average taurine quantity is 342.28 mg/100 mL. Unfortunately, exact amounts of the other ED elements are often not disclosed by manufacturers. Caffeine and taurine in doses 3-6 mg/kg and 1-6 g, respectively, appear to be the main ergogenic elements. However, additive or synergic properties between them seem to be implausible. Because of non-unified protocol design, presented studies show inconsistency between ED ingestion and improved physical performance. Potential side effects caused by abusive consumption or missed contraindications are the aspects that are the most often overlooked by consumers and not fully elucidated by ED producers. In this review, the authors aimed to present the latest scientific information on ED components and their possible impact on improving physical performance as well as to bring emphasis to the danger of inordinate consumption.


Assuntos
Cafeína/efeitos adversos , Bebidas Energéticas/efeitos adversos , Substâncias para Melhoria do Desempenho/efeitos adversos , Resistência Física/efeitos dos fármacos , Taurina/efeitos adversos , Adolescente , Adulto , Fatores Etários , Criança , Qualidade de Produtos para o Consumidor , Interações Medicamentosas , Ingestão de Energia , Humanos , Valor Nutritivo , Recomendações Nutricionais , Medição de Risco , Fatores de Risco , Adulto Jovem
7.
Crit Rev Oncol Hematol ; 164: 103419, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34245857

RESUMO

Endometrial cancer (EC) is the sixth most commonly occurring cancer in women and its morbidity and mortality are continuously increasing. Considering experience with different types of cancers, C-reactive protein (CRP) appears to be a promising diagnostic and prognostic factor. Aiming to investigate its potential in view of EC authors of this paper reviewed databases for metanalysis, randomized controlled trials and review articles. Studies indicate CRP > 3.33 mg/l correlates with the EC incidence with HR = 2.29 (p < 0.05). Moreover, High-sensitivity CRP assay allows to detect CRP in very low concentrations and distinguish patients with endometriosis, soft tissue sarcomas and possibly EC. Perioperational CRP, as well as its changes are independent prognostic factors for EC. However, CRP-to-albumin ratio as well as Glasgow Prognostic Score (GPS) have greater prognostic value that CRP alone. Additionally, CRP is possibly a mediator of carcinogenesis and cancer progression through activation of inter alia FcgRs/MAPK/ERK, FcgRs/IL-6/AKT/STAT3 and FcgRs/NF-κB/NLRP3 pathways.


Assuntos
Proteína C-Reativa , Neoplasias do Endométrio , Albuminas , Proteína C-Reativa/análise , Neoplasias do Endométrio/diagnóstico , Neoplasias do Endométrio/epidemiologia , Feminino , Humanos , Metanálise como Assunto , Prognóstico , Ensaios Clínicos Controlados Aleatórios como Assunto , Estudos Retrospectivos
8.
Life (Basel) ; 11(5)2021 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-34069173

RESUMO

We evaluated the effect of intravitreal injections of aflibercept (IVA) on blood coagulation parameters including prothrombin time (PT), activated partial thromboplastin time (APTT), and thrombin time (TT), as well as asymmetric dimethylarginine (ADMA), nitric oxide (NO), interleukin 6 (IL-6), and interleukin 18 (IL-18) serum levels in patients with neovascular AMD (nAMD). Twenty-two eyes of 22 patients with nAMD were included. Parameters were evaluated before and 2-3 days after the first IVA injection, and then immediately before and 2-3 days after the third IVA injection. We revealed prolongation of the TT after the initial loading phase of IVA (p = 0.041) and a significant increase in IL-18 serum concentration immediately before the third IVA administration compared to baseline (p = 0.037). There were no statistically significant differences of other parameters and PT, APTT, ADMA, NO, and IL-6 values remained within the normal range at each of the time points of the study. Our results suggest that repeated IVA administration may affect the common blood coagulation pathway, which manifests as a prolongation of the TT value. Furthermore, we showed a significant increase in serum concentration of the pro-inflammatory cytokineIL-18during the initial loading phase of IVA.

9.
Int J Mol Sci ; 22(2)2021 Jan 12.
Artigo em Inglês | MEDLINE | ID: mdl-33445783

RESUMO

Preeclampsia is one of the three leading causes of maternal morbidity and mortality worldwide. It afflicts 2-8% of pregnancies and is the most common cause of gestational hypertension. This article is focused on nuclear factor kappa B (NF-κB), its role in normal and pathological spiral arteries remodelling and development of preeclampsia, with evaluation if it is a promising therapeutic target. NF-κB is a key mediator of placentation. Since insemination, it stimulates production of proinflammatory cytokines by the uterine epithelium, which leads to activation of macrophages, uterine natural killer cells (uNKs), and other leukocytes. The trophoblast/uNK/macrophage crosstalk is crucial for implantation and spiral arteries remodeling, and NF-κB regulates that process through modification of cytokine expression, as well as cell phenotype and function. In the course of preeclampsia, the remodeling processes is disturbed by excessive inflammation and increased NF-κB activation. The pathological remodeling leads to uteroplacental dysfunction, release of proinflammatory cytokines into the maternal circulation, endothelial stress, and development of preeclampsia. The analysis of genetic and environmental inductors of NF-κB helps to distinguish preeclampsia risk groups. Furthermore, a selective inhibition of NF-κB or NF-κB activating pathways alleviates symptoms of preeclampsia in rat models; therefore, this could be an efficient therapeutic option.


Assuntos
NF-kappa B/metabolismo , Pré-Eclâmpsia/metabolismo , Artéria Uterina/metabolismo , Útero/metabolismo , Remodelação Vascular/fisiologia , Animais , Feminino , Humanos , Inflamação/metabolismo , Gravidez , Transdução de Sinais/fisiologia
10.
Nutrients ; 14(1)2021 Dec 23.
Artigo em Inglês | MEDLINE | ID: mdl-35010907

RESUMO

Authors present a review of crucial mechanisms contributing to the invasion of the basement membrane (BM) of the urothelium by cancer cells and to the progression of bladder cancer (BC). The breeching of the urothelial BM, facilitated by an aberrant activation of matrix metalloproteinases (MMP) is particularly perilous. Inhibition of activation of these proteinases constitutes a logic opportunity to restrain progression. Because of limited efficacy of current therapeutic methods, the search for the development of alternative approaches constitutes "the hot spot" of modern oncology. Recent studies revealed significant anticancer potential of natural phytochemicals. Especially, curcumin has emerged as a one of the most promising phytochemicals and showed its efficacy in several human malignancies. Therefore, this article addresses experimental and clinical data indicating multi-directional inhibitory effect of curcumin on the growth of bladder cancer. We particularly concentrate on the mechanisms, by which curcumin inhibits the MMP's activities, thereby securing BM integrity and alleviating the eventual cancer invasion into the bladder muscles. Authors review the recently accumulating data, that curcumin constitutes a potent factor contributing to the more effective treatment of the bladder cancer.


Assuntos
Membrana Basal/metabolismo , Curcumina/uso terapêutico , Metaloproteinases da Matriz/metabolismo , Neoplasias da Bexiga Urinária/tratamento farmacológico , Urotélio/metabolismo , Animais , Antineoplásicos Fitogênicos/farmacologia , Antineoplásicos Fitogênicos/uso terapêutico , Linhagem Celular Tumoral , Movimento Celular/efeitos dos fármacos , Curcumina/farmacologia , Progressão da Doença , Humanos , Metaloproteinase 2 da Matriz/metabolismo , Metaloproteinase 9 da Matriz/metabolismo , Camundongos , Compostos Fitoquímicos/farmacologia , Compostos Fitoquímicos/uso terapêutico , Neoplasias da Bexiga Urinária/patologia , Urotélio/patologia
11.
Neurochem Res ; 46(3): 439-446, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33252771

RESUMO

Central nervous system (CNS) injuries annually afflict approximately 2.7 million people in United States only, inflicting costs of nearly 100 billion US dollars. The gravity of this problem is a consequence of severe and prolonged disability of patients due to a scarce regeneration of CNS, along with the lack of efficient neuroprotective and neuroregenrative therapies. Therefore, the first and most important task in managing the CNS injury is reduction of the damaged area, and apoptosis of neurons occurs not only during the trauma, but in great extent within the following minutes and hours. This process, called secondary injury phase, is a result of trauma-induced metabolic changes in nervous tissue and neuron apoptosis. Cenobamate is a new antiepileptic drug approved by FDA on November 21, 2019. Regardless of its primary purpose, cenobamate, as a blocker of voltage-gated sodium channels and positive modulator of GABAa receptors, it appears to be a promising neuroprotective agent. Moreover, through activation of PI3K/Akt-CREB-BDNF pathway, it leads to the increase of anti-apoptotic factor levels and the decrease of pro-apoptotic factor levels, which induce inhibition of apoptosis and increase neuron survival. Similarly to riluzole, cenobamate could be an important part of a perioperative procedure in neurosurgery, decreasing the occurrence of neurological deficits. Provided that cenobamate will be effective in aforementioned conditions, it could improve treatment outcomes of millions of patients every year, thereby an extensive investigation of its efficacy as a neuroprotective treatment after central nervous system trauma should follow.


Assuntos
Carbamatos/uso terapêutico , Doenças do Sistema Nervoso Central/tratamento farmacológico , Clorofenóis/uso terapêutico , Fármacos Neuroprotetores/uso terapêutico , Tetrazóis/uso terapêutico , Animais , Reposicionamento de Medicamentos , Agonistas de Receptores de GABA-A/uso terapêutico , Ácido Glutâmico/metabolismo , Humanos , Transdução de Sinais/efeitos dos fármacos , Bloqueadores do Canal de Sódio Disparado por Voltagem/uso terapêutico
12.
Pharmaceuticals (Basel) ; 13(11)2020 Nov 11.
Artigo em Inglês | MEDLINE | ID: mdl-33187206

RESUMO

Sodium-glucose co-transporter 2 inhibitors (SGLT2i) are oral anti-hyperglycemic agents approved for the treatment of type 2 diabetes mellitus. Some reports suggest their presence in the central nervous system and possible neuroprotective properties. SGLT2 inhibition by empagliflozin has shown to reduce amyloid burden in cortical regions of APP/PS1xd/db mice. The same effect was noticed regarding tau pathology and brain atrophy volume. Empagliflozin presented beneficial effect on cognitive function, which may be connected to an increase in cerebral brain-derived neurotrophic factor. Canagliflozin and dapagliflozin may possess acetylcholinesterase inhibiting activity, resembling in this matter Alzheimer's disease-registered therapies. SGLT2 inhibitors may prove to impact risk factors of atherosclerosis and pathways participating both in acute and late stage of stroke. Their mechanism of action can be related to induction in hepatocyte nuclear factor-1α, vascular endothelial growth factor-A, and proinflammatory factors limitation. Empagliflozin may have a positive effect on preservation of neurovascular unit in diabetic mice, preventing its aberrant remodeling. Canagliflozin seems to present some cytostatic properties by limiting both human and mice endothelial cells proliferation. The paper presents potential mechanisms of SGLT-2 inhibitors in conditions connected with neuronal damage, with special emphasis on Alzheimer's disease and cerebral ischemia.

13.
Microorganisms ; 8(8)2020 Jul 29.
Artigo em Inglês | MEDLINE | ID: mdl-32751306

RESUMO

The World Health Organization (WHO) reports that 400 million people are obese, and over 1.6 billion adults are overweight worldwide. Annually, over 2.8 million people die from obesity-related diseases. The incidence of overweight and obesity is steadily increasing, and this phenomenon is referred to as a 21st-century pandemic. The main reason for this phenomenon is an easy access to high-energy, processed foods, and a low-activity lifestyle. These changes lead to an energy imbalance and, as a consequence, to the development of body fat. Weight gain contributes to the development of heart diseases, skeletal system disorders, metabolic disorders such as diabetes, and certain types of cancer. In recent years, there have been many works linking obesity with intestinal microbiota. Experiments on germ-free animals (GFs) have provided much evidence for the contribution of bacteria to obesity. The composition of the gut microbiota (GM) changes in obese people. These changes affect the degree of energy obtained from food, the composition and secretory functions of adipose tissue, carbohydrate, and lipid metabolism in the liver, and the activity of centers in the brain. The study aimed to present the current state of knowledge about the role of intestinal microbiota in the development of obesity and the impact of supplementation with probiotic bacteria on the health of overweight and obese patients.

14.
Cells ; 9(7)2020 07 08.
Artigo em Inglês | MEDLINE | ID: mdl-32650532

RESUMO

Pregnancy-induced hypertension and preeclampsia are associated with significant maternal and fetal mortality. A better understanding of these diseases, delineation of molecular pathomechanism, and efficient treatment development are some of the most urgent tasks in obstetrics and gynecology. Recent findings indicate the crucial role of inflammation in the development of hypertension and preeclampsia. Although the mechanism is very complex and needs further explanation, it appears that high levels of cholesterol, urate, and glucose activates NLRP3 inflammasome, which produces IL-1ß, IL-18, and gasdermin D. Production of these proinflammatory chemokines is the beginning of a local and general inflammation, which results in sympathetic outflow, angiotensin II production, proteinuria, hemolysis, liver damage, immunothrombosis, and coagulopathy. The NLRP3 inflammasome is a critical complex in the mediation of the inflammatory response, which makes it crucial for the development of pregnancy-induced hypertension and preeclampsia, as well as its complications, such as placental abruption and HELLP (hemolysis, elevated liver enzymes, and low platelets) syndrome. Herein, the presented article delineates molecular mechanisms of these processes, indicating directions of future advance.


Assuntos
Hipertensão Induzida pela Gravidez/metabolismo , Hipertensão Induzida pela Gravidez/patologia , Inflamassomos/metabolismo , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Pré-Eclâmpsia/metabolismo , Pré-Eclâmpsia/patologia , Animais , Feminino , Humanos , Gravidez
15.
Nutrients ; 12(6)2020 Jun 16.
Artigo em Inglês | MEDLINE | ID: mdl-32560029

RESUMO

Anemia of chronic diseases is a condition that accompanies a specific underlying disease, in which there is a decrease in hemoglobin, hematocrit and erythrocyte counts due to a complex process, usually initiated by cellular immunity mechanisms and pro-inflammatory cytokines and hepcidin. This is the second most common type of anemia after iron deficiency anemia in the world. Its severity generally correlates with the severity of the underlying disease. This disease most often coexists with chronic inflammation, autoimmune diseases, cancer, and kidney failure. Before starting treatment, one should undertake in-depth diagnostics, which includes not only assessment of complete blood count and biochemical parameters, but also severity of the underlying disease. The differential diagnosis of anemia of chronic diseases is primarily based on the exclusion of other types of anemia, in particular iron deficiency. The main features of anemia of chronic diseases include mild to moderate lowering of hemoglobin level, decreased percentage of reticulocyte count, low iron and transferrin concentration, but increased ferritin. Due to the increasingly better knowledge of the pathomechanism of chronic diseases and cancer biology, the diagnosis of this anemia is constantly expanding with new biochemical indicators. These include: the concentration of other hematopoietic factors (folic acid, vitamin B12), hepcidin, creatinine and erythropoietin. The basic form of treatment of anemia of chronic diseases remains supplementation with iron, folic acid and vitamin B12 as well as a diet rich in the above-mentioned hematopoietic factors. The route of administration (oral, intramuscular or intravenous) requires careful consideration of the benefits and possible side effects, and assessment of the patient's clinical status. New methods of treating both the underlying disease and anemia are raising hopes. The novel methods are associated not only with supplementing deficiencies, but also with the administration of drugs molecularly targeted to specific proteins or receptors involved in the development of anemia of chronic diseases.


Assuntos
Anemia/diagnóstico , Anemia/etiologia , Doença Crônica/terapia , Anemia/tratamento farmacológico , Anemia Ferropriva , Diagnóstico Diferencial , Ferritinas/sangue , Ácido Fólico/administração & dosagem , Hemoglobinas/análise , Humanos , Ferro/administração & dosagem , Ferro/sangue , Contagem de Reticulócitos , Transferrina/análise , Vitamina B 12/administração & dosagem
16.
Nutrients ; 12(6)2020 Jun 03.
Artigo em Inglês | MEDLINE | ID: mdl-32503160

RESUMO

Elevated blood pressure affects a great part of the elderly population and is the leading risk factor for cardiovascular disease. New approaches have been taken in the fight against this growing problem, in the form of diets (Mediterranean, Dietary Approaches to Stop Hypertension (DASH) and intermittent fasting). Recent research has shown the promising results regarding diets and their effect on the prevention and improvement of elevated blood pressure. This review attempts to take this a step further, reviewing 26 studies in the search for dietary elements that may be causing this improvement. Although good evidence was found in favor of lycopene, Docosahexaenoic acid (DHA), fiber and anthocyanin, further evidence is needed before any conclusions can be made. In contrast, the evidence shows that licorice increases blood pressure.


Assuntos
Antocianinas/farmacologia , Pressão Sanguínea/efeitos dos fármacos , Dieta Mediterrânea , Abordagens Dietéticas para Conter a Hipertensão/métodos , Fibras na Dieta , Ácidos Docosa-Hexaenoicos/farmacologia , Jejum/fisiologia , Hipertensão/prevenção & controle , Licopeno/farmacologia , Feminino , Glycyrrhiza/efeitos adversos , Fatores de Risco de Doenças Cardíacas , Humanos , Masculino
17.
Cells ; 9(6)2020 06 04.
Artigo em Inglês | MEDLINE | ID: mdl-32512882

RESUMO

Cancer stem cells (CSCs) have been reported in various hematopoietic and solid tumors, therefore, are considered to promote cancer progression, metastasis, recurrence and drug resistance. However, regulation of CSCs at the molecular level is not fully understood. microRNAs (miRNAs) have been identified as key regulators of CSCs by modulating their major functions: self-renewal capacity, invasion, migration and proliferation. Various studies suggest that metformin, an anti-diabetic drug, has an anti-tumor activity but its precise mechanism of action has not been understood. The present article was written in accordance to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. We systematically reviewed evidence for metformin's ability to eradicate CSCs through modulating the expression of miRNAs in various solid tumors. PubMed and MEDLINE were searched from January 1990 to January 2020 for in vitro studies. Two authors independently selected and reviewed articles according to predefined eligibility criteria and assessed risk of bias of included studies. Four papers met the inclusion criteria and presented low risk bias. All of the included studies reported a suppression of CSCs' major function after metformin dosage. Moreover, it was showed that metformin anti-tumor mechanism of action is based on regulation of miRNAs expression. Metformin inhibited cell survival, clonogenicity, wound-healing capacity, sphere formation and promotes chemosensitivity of tumor cells. Due to the small number of publications, aforementioned evidences are limited but may be consider as background for clinical studies.


Assuntos
Metformina/farmacologia , MicroRNAs/metabolismo , Células-Tronco Neoplásicas/metabolismo , Animais , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Humanos , MicroRNAs/genética , Células-Tronco Neoplásicas/efeitos dos fármacos , Células-Tronco Neoplásicas/patologia , Viés de Publicação , Risco
18.
Biomed Pharmacother ; 127: 110196, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32413670

RESUMO

PURPOSE: Pregnancy and time period right after labour are connected with some dangerous states, such as: pregnancy-induced hypertension (PIH), which afflict 6-10 % of pregnant women and mood disorders where postpartum depression occurs among 10-15 % of women after labour and so-called baby blues afflicts around 43 % of them. Scientists tried to link those diseases which afflicts thousands of women per year, and the linking factor appears to be methyldopa which is the first choice treatment of PIH. Recent study showed that 778 % of pregnant women treated with methyldopa suffered to postpartum depression. Aim of this article is to delineate mechanisms through which methyldopa induce mood disorders. METHODS: Authors reviewed following databases for randomized controlled trials and review articles published up to February 2019: Pubmed, Scopus, Google Scholar, Cochrane Database and ClinicalKey. Keywords used to research were: postpartum depression, methyldopa, depression, baby blues, pregnancy-induced hypertension, gestational hypertension, VEGF, nitric oxide, prolactin, hyperprolactinaemia. Selection of studies was based on relevance, year of publication, and reliability of methodology. Authors included every study contributory to assessment of scale of the problem of postpartum depression and baby blues, along with connection of those diseases with usage of methyldopa. RESULTS: Methyldopa alterate neurotrophic factors levels, impairs cerebral blood flow, and through dopamine level reduction it impairs reward system and increase prolactin release. Moreover, methyldopa leads to catecholamines depletion which impairs neurons function and increase concentration of nitric oxide (NO) which have neurotoxic properties. CONCLUSIONS: Epidemiological, as well as pharmacological studies confirmed important role of methyldopa in induction of postpartum depression and baby blues through hormone alteration, reduced cerebral blood flow and neurons function impairment. This study proves how important for women's health is this problem and how complex is its mechanism.


Assuntos
Anti-Hipertensivos/efeitos adversos , Depressão Pós-Parto/induzido quimicamente , Metildopa/efeitos adversos , Animais , Anti-Hipertensivos/administração & dosagem , Depressão Pós-Parto/fisiopatologia , Feminino , Humanos , Hipertensão Induzida pela Gravidez/tratamento farmacológico , Metildopa/administração & dosagem , Gravidez , Ensaios Clínicos Controlados Aleatórios como Assunto
19.
Nutrients ; 12(5)2020 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-32423084

RESUMO

Inflammatory bowel diseases, including Crohn's disease and ulcerative colitis, are a life-long, chronic, and relapsing problem affecting 11.2 million people worldwide. To date, there is pharmacological therapy to treat symptoms such as diarrhea, constipation, and abdominal cramping/pain. These medications also help to alleviate everyday discomfort; however, there are no curative therapies. Recent studies have investigated the combination of pharmacological treatment along with nutritional interventions to improve quality of life and risk of disease relapse. Dietary supplements, specifically probiotics, polyphenols, fibers, fatty acids and low fermentable oligosaccharide, disaccharide, monosaccharide, and polyol diets (FODMAP diets), have been closely looked at to determine their effect, if any, on the development of inflammatory bowel disease and its course of progression. Approximately 30 studies were carefully reviewed and analyzed to appreciate the value of these above-mentioned supplements and their influence on this gastrointestinal disease. After analysis, it has been demonstrated that by implementing fibers, polyphenols, and fatty acids, as well as keeping a low-saccharide diet for those patients with Crohn's disease and ulcerative colitis can improve quality of life and invoke clinical remission. Some polyphenols, specifically curcumin and resveratrol, have proved to decrease disease activity in studies reviewed. Although these studies have become a topic of recent interest, it would be of great value to doctors and patients alike, to continue in this direction of research and to improve the findings for best treatment substances and dosages. This would lead to increased quality of life and disease control leading to fewer complications in the future.


Assuntos
Colite Ulcerativa/terapia , Doença de Crohn/terapia , Dieta/métodos , Suplementos Nutricionais , Doenças Inflamatórias Intestinais/terapia , Fibras na Dieta/uso terapêutico , Ácidos Graxos/uso terapêutico , Humanos , Polifenóis/uso terapêutico , Probióticos/uso terapêutico , Qualidade de Vida , Resultado do Tratamento
20.
Int J Mol Sci ; 21(8)2020 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-32326620

RESUMO

The lack of effective Alzheimer's disease treatment is becoming a challenge for researchers and prompts numerous attempts to search for and develop better therapeutic solutions. Compounds that affect several routes of the neurodegeneration cascade leading to the development of disease are of particular interest. An example of such substances is resveratrol and its synthetic and natural derivatives, which have gained popularity in recent years and show promise as a possible new therapeutic option in the approach to Alzheimer's disease treatment. In this article, the state of the art evidence on the role of resveratrol (RSV) in neuroprotection is presented; research results are summarized and the importance of resveratrol and its derivatives in the treatment of Alzheimer's disease are underlined. It also focuses on various modifications of the resveratrol molecule that should be taken into account in the design of future research on drugs against Alzheimer's disease.


Assuntos
Doença de Alzheimer/tratamento farmacológico , Barreira Hematoencefálica/efeitos dos fármacos , Doenças Metabólicas/tratamento farmacológico , Neuroproteção/efeitos dos fármacos , Resveratrol/farmacologia , Doença de Alzheimer/metabolismo , Peptídeos beta-Amiloides/metabolismo , Animais , Benzofuranos/farmacologia , Barreira Hematoencefálica/metabolismo , Doenças do Sistema Nervoso Central/tratamento farmacológico , Doenças do Sistema Nervoso Central/imunologia , Doenças do Sistema Nervoso Central/metabolismo , Humanos , Inflamação/tratamento farmacológico , Inflamação/metabolismo , Doenças Metabólicas/metabolismo , Estresse Oxidativo/efeitos dos fármacos , Resveratrol/análogos & derivados , Estilbenos/farmacologia , Proteínas tau/metabolismo
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