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1.
Liver Transpl ; 30(6): 647-658, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38315054

RESUMO

This review discusses long-term complications from immunosuppressants after liver transplantation and the management of these complications. Common complications of calcineurin inhibitors include nephrotoxicity and metabolic diseases. Nephrotoxicity can be managed by targeting a lower drug level and/or adding an immunosuppressant of a different class. Metabolic disorders can be managed by treating the underlying condition and targeting a lower drug level. Gastrointestinal adverse effects and myelosuppression are common complications of antimetabolites that are initially managed with dose reduction or discontinuation if adverse events persist. Mammalian targets of rapamycin inhibitors are associated with myelosuppression, proteinuria, impaired wound healing, and stomatitis, which may require dose reduction or discontinuation. Induction agents and agents used for steroid-refractory rejection or antibody-mediated rejection are reviewed. Other rare complications of immunosuppressants are discussed as well.


Assuntos
Rejeição de Enxerto , Imunossupressores , Transplante de Fígado , Humanos , Imunossupressores/efeitos adversos , Transplante de Fígado/efeitos adversos , Rejeição de Enxerto/imunologia , Rejeição de Enxerto/prevenção & controle , Inibidores de Calcineurina/efeitos adversos , Nefropatias/induzido quimicamente , Nefropatias/imunologia , Terapia de Imunossupressão/efeitos adversos , Terapia de Imunossupressão/métodos , Doenças Metabólicas/induzido quimicamente , Doenças Metabólicas/imunologia , Doenças Metabólicas/terapia , Inibidores de MTOR/efeitos adversos
2.
Pestic Biochem Physiol ; 195: 105521, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37666627

RESUMO

The use of pesticides in the past century has lot helped humankind in improving crops' field and general hygiene level. Nevertheless, there has been countless evidences on the toxic effects of pesticides on the living systems. The link of exposure to pesticides with different human chronic diseases in the context of carcinogenicity, neurotoxicity, developmental toxicity, etc., have been evaluated in various types of studies. There are also some evidences on the link of exposure to pesticides with higher incidence of metabolic diseases associated with insulin resistance like diabetes, obesity, metabolic syndrome, hypertension, polycystic ovary syndrome and chronic kidney diseases. Physiologically, weakening intracellular insulin signaling is considered as a compensatory mechanism for cells to cope with cellular stresses like xenobiotic effects, oxidative stress and inflammatory responses, but it can pathologically lead to a defective cycle with lowered sensitivity of the cells to insulin which happens in metabolic disorders. In this work, the data related to metabolic toxicity of pesticides categorized in the mentioned metabolic diseases with a focus on the effects of pesticides on insulin signaling pathway and the mechanisms of development of insulin resistance will be systematically reviewed and presented.


Assuntos
Resistência à Insulina , Insulinas , Doenças Metabólicas , Praguicidas , Humanos , Feminino , Praguicidas/toxicidade , Doenças Metabólicas/induzido quimicamente , Transdução de Sinais
4.
Clin Genitourin Cancer ; 21(3): e182-e189, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-36621463

RESUMO

BACKGROUND: Androgen deprivation therapy (ADT), a backbone treatment for advanced prostate cancer (PC), is known to have a variety of metabolic side effects. We conducted an updated meta-analysis to quantify the metabolic risks of ADT. MATERIALS AND METHODS: We searched PubMed, Web of Science, and Scopus in May of 2022 for studies investigating the risk of metabolic syndrome (MetS), diabetes, and hypertension from ADT in PC patients using keywords. Only full-length studies with a control group of PC patients not on ADT were included. All results compatible with each outcome domain in each included study were sought. For included studies, relative risk (RR) was pooled using a random effects model and a trim-fill approach was used to adjust for publication bias. RESULTS: 1,846 records were screened, of which 19 were found suitable for data extraction. Five studies, including 891 patients, were evaluated for MetS as an outcome, with the random effects model showing a pooled RR of 1.60 ([95% Confidence Interval (CI), 1.06-2.42]; P=0.03) for patients on ADT while twelve studies, including 336,330 patients, examined diabetes as an outcome, and the random effects model showed a RR of 1.43 ([95% CI, 1.28-1.59]; P< 0.01). After adjustment for publication bias, ADT was associated with a 25% increased risk for diabetes but was not associated with MetS. 4 studies, including 7,051 patients, examined hypertension as an outcome, and the random effects model showed a RR of 1.30 ([95% CI, 1.08-1.55]; P=0.18) in ADT patients. CONCLUSION: In patients with PC, ADT was not associated with MetS and the association with diabetes was not as strong as previously reported. Our novel meta-analysis of hypertension showed that ADT increased the risk of hypertension by 30%. These results should be understood in the context of collaborating care between a patient's oncologist and primary care provider to optimize care.


Assuntos
Diabetes Mellitus , Hipertensão , Doenças Metabólicas , Neoplasias da Próstata , Masculino , Humanos , Neoplasias da Próstata/terapia , Antagonistas de Androgênios/efeitos adversos , Androgênios , Doenças Metabólicas/induzido quimicamente , Doenças Metabólicas/epidemiologia , Doenças Metabólicas/complicações , Diabetes Mellitus/induzido quimicamente , Diabetes Mellitus/epidemiologia , Diabetes Mellitus/tratamento farmacológico , Hipertensão/induzido quimicamente , Hipertensão/epidemiologia
5.
Artigo em Inglês | MEDLINE | ID: mdl-36173044

RESUMO

Bisphenol A (BPA) is an endocrine-disrupting chemical widely present in many consumer goods that poses a significant threat to our health upon exposure. Humans are exposed to BPA, which directly or indirectly causes endocrine dysfunctions that lead to metabolic disorders like obesity, fatty liver diseases, insulin resistance, polycystic ovarian syndrome, and other endocrine- related imbalances. The duration, quantity, and period of exposure to BPA, especially during the critical stage of development, determine its impact on reproductive and non-reproductive health. Because of its endocrine-disrupting effects, the European Chemical Agency has added BPA to the candidate list of chemicals of very serious concern. Due to its estrogenic properties and structural similarities with thyroid hormones, BPA disrupts the endocrine system at different levels. It interacts with estrogen receptors at the molecular level and acts as an antagonist or agonist via an estrogen receptor-dependent signaling pathway. In particular, BPA binds to G-protein coupled receptors and estrogen receptors, activating signaling pathways that influence cellular apoptosis, proliferation, differentiation, and inflammation. BPA acts as an obesogen that promotes adipogenesis and correlates with increased lipid accumulation and elevated expression of adipogenic markers. As a metabolic and endocrine disruptor, BPA impairs cellular homeostasis by increasing oxidative mediators and decreasing antioxidant enzymes, resulting in mitochondrial dysfunction. Due to its endocrine-disrupting properties, BPA exposure induces endocrine dysfunctions, causing metabolic syndrome. This review article gives recent development and novel insights into the cellular and molecular mechanisms of BPA-induced endocrine dysfunctions and their associated metabolic disorders.


Assuntos
Doenças Metabólicas , Receptores de Estrogênio , Humanos , Receptores de Estrogênio/metabolismo , Sistema Endócrino/metabolismo , Compostos Benzidrílicos/toxicidade , Doenças Metabólicas/induzido quimicamente
6.
J Transl Med ; 20(1): 479, 2022 10 20.
Artigo em Inglês | MEDLINE | ID: mdl-36266691

RESUMO

BACKGROUND: Explanted livers from patients with inherited metabolic liver diseases possess the potential to be a cell source of good-quality hepatocytes for hepatocyte transplantation (HT). This study evaluated the therapeutic effects of domino HT using hepatocytes isolated from explanted human livers for acute liver failure (ALF). METHODS: Isolated hepatocytes were evaluated for viability and function and then transplanted into D-galactosamine/lipopolysaccharide-induced ALF mice via splenic injection. The survival rate was analyzed by the Kaplan-Meier method and log-rank test. Liver function was evaluated by serum biochemical parameters, and inflammatory cytokine levels were measured by ELISA. The pathological changes in the liver tissues were assessed by hematoxylin-eosin staining. Hepatocyte apoptosis was investigated by TUNEL, and hepatocyte apoptosis-related proteins were detected by western blot. The localization of human hepatocytes in the injured mouse livers was detected by immunohistochemical analyses. RESULTS: Hepatocytes were successfully isolated from explanted livers of 10 pediatric patients with various liver-based metabolic disorders, with an average viability of 85.3% ± 13.0% and average yield of 9.2 × 106 ± 3.4 × 106 cells/g. Isolated hepatocytes had an excellent ability to secret albumin, produce urea, uptake indocyanine green, storage glycogen, and express alpha 1 antitrypsin, albumin, cytokeratin 18, and CYP3A4. Domino HT significantly reduced mortality, decreased serum levels of alanine aminotransferase and aspartate aminotransferase, and improved the pathological damage. Moreover, transplanted hepatocytes inhibited interleukin-6 and tumor necrosis factor-α levels. Domino HT also ameliorates hepatocyte apoptosis, as evidenced by decreased TUNEL positive cells. Positive staining for human albumin suggested the localization of human hepatocytes in ALF mice livers. CONCLUSION: Explanted livers from patients with inheritable metabolic disorders can serve as a viable cell source for cell-based therapies. Domino HT using hepatocytes with certain metabolic defects has the potential to be a novel therapeutic strategy for ALF.


Assuntos
Hepatócitos , Falência Hepática Aguda , Doenças Metabólicas , Animais , Criança , Humanos , Camundongos , Alanina Transaminase/metabolismo , Albuminas/metabolismo , alfa 1-Antitripsina/metabolismo , Aspartato Aminotransferases/metabolismo , Citocromo P-450 CYP3A/metabolismo , Galactosamina/efeitos adversos , Glicogênio/metabolismo , Interleucina-6/metabolismo , Queratina-18/metabolismo , Lipopolissacarídeos , Falência Hepática Aguda/induzido quimicamente , Falência Hepática Aguda/cirurgia , Doenças Metabólicas/induzido quimicamente , Doenças Metabólicas/cirurgia , Albumina Sérica Humana/metabolismo , Fator de Necrose Tumoral alfa/metabolismo , Ureia/metabolismo , Hepatócitos/transplante
7.
Transplant Cell Ther ; 28(2): 104.e1-104.e7, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-34883294

RESUMO

Busulfan is a commonly used alkylating agent in the conditioning regimens of hematopoietic cell transplantation (HCT). Population pharmacokinetic (popPK) models enable description of busulfan PK and optimization of exposure, which leads to improvement of event-free survival after HCT. Prior busulfan popPK analysis has been limited by small numbers in patients with inherited metabolic disorders (IMD). The primary objective was to characterize population PK of busulfan in a large cohort of children and young adults undergoing HCT for IMD. PopPK analysis of busulfan drug concentrations was performed using data from 78 patients with IMD who received intravenous busulfan (every 24 hours, 4 doses) as part of pretransplantation combination chemotherapy. The final model for busulfan drug clearance was used to estimate individual doses aimed to achieve a target cumulative area under the curve (cAUC) of 80 to 100 mg · h/L. We then compared the probability of cAUC within the range of 80 to 100 mg · h/L by the developed dosing regimen versus conventional regimen. A 1-compartment, linear elimination model best described the PK of busulfan. Significant covariates demonstrated to affect busulfan clearance included total body weight and the time (in days) from busulfan infusion start. The probability of target cAUC attainment by the developed dosing versus the conventional dosing were 47% versus 43% for body weight <12 kg, and 48% versus 36% for body weight ≥12 kg. We described population PK of intravenous busulfan in a large IMD cohort. The proposed dosing regimen based on the developed model can improve the target cAUC attainment of busulfan for IMD.


Assuntos
Transplante de Células-Tronco Hematopoéticas , Doenças Metabólicas , Peso Corporal , Bussulfano/uso terapêutico , Criança , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Humanos , Doenças Metabólicas/induzido quimicamente , Condicionamento Pré-Transplante , Adulto Jovem
8.
Int J Mol Sci ; 22(15)2021 Jul 22.
Artigo em Inglês | MEDLINE | ID: mdl-34360586

RESUMO

Copper, manganese, and iron are vital elements required for the appropriate development and the general preservation of good health. Additionally, these essential metals play key roles in ensuring proper brain development and function. They also play vital roles in the central nervous system as significant cofactors for several enzymes, including the antioxidant enzyme superoxide dismutase (SOD) and other enzymes that take part in the creation and breakdown of neurotransmitters in the brain. An imbalance in the levels of these metals weakens the structural, regulatory, and catalytic roles of different enzymes, proteins, receptors, and transporters and is known to provoke the development of various neurological conditions through different mechanisms, such as via induction of oxidative stress, increased α-synuclein aggregation and fibril formation, and stimulation of microglial cells, thus resulting in inflammation and reduced production of metalloproteins. In the present review, the authors focus on neurological disorders with psychiatric signs associated with copper, iron, and manganese excess and the diagnosis and potential treatment of such disorders. In our review, we described diseases related to these metals, such as aceruloplasminaemia, neuroferritinopathy, pantothenate kinase-associated neurodegeneration (PKAN) and other very rare classical NBIA forms, manganism, attention-deficit/hyperactivity disorder (ADHD), ephedrone encephalopathy, HMNDYT1-SLC30A10 deficiency (HMNDYT1), HMNDYT2-SLC39A14 deficiency, CDG2N-SLC39A8 deficiency, hepatic encephalopathy, prion disease and "prion-like disease", amyotrophic lateral sclerosis, Huntington's disease, Friedreich's ataxia, and depression.


Assuntos
Ceruloplasmina/deficiência , Cobre/efeitos adversos , Distúrbios do Metabolismo do Ferro/patologia , Ferro/efeitos adversos , Manganês/efeitos adversos , Doenças Metabólicas/patologia , Distrofias Neuroaxonais/patologia , Doenças Neurodegenerativas/patologia , Humanos , Distúrbios do Metabolismo do Ferro/induzido quimicamente , Distúrbios do Metabolismo do Ferro/etiologia , Intoxicação por Manganês/complicações , Doenças Metabólicas/induzido quimicamente , Metaloproteínas/metabolismo , Distrofias Neuroaxonais/induzido quimicamente , Doenças Neurodegenerativas/etiologia , Estresse Oxidativo
9.
Neurochem Res ; 46(12): 3166-3178, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34401962

RESUMO

Curcumin has been reported to have a therapeutic effect on Alzheimer's disease (AD), but the specific mechanism remains to be elucidated. In the present research, we aimed to investigate the effect and molecular mechanism of curcumin on AD. Mouse primary hippocampal neuron cells were treated with various concentrations of beta-amyloid 42 (Aß42) and the results found that Aß42 inhibited cell viability in a dose-dependent manner. Compared with 50 ng/mL Aß42, 500 ng/mL Aß42 could further promote cell apoptosis, reduce the ratio of Nicotinamide adenine dinucleotide (NAD(+))/Nicotinamide adenine diphosphate hydride (NADH) and Adenosine 5'-triphosphate (ATP) level, and inhibit Sirtuins 3 (SIRT3) deacetylation activity and protein expression of Thyroid hormone receptor beta (Thrb) and SIRT3. Hence, 500 ng/mL Aß42 was used to establish a cell model of AD. Curcumin significantly reversed the inhibitory effects of Aß42 on cell viability, SIRT3 deacetylation activity, the ratio of NAD+/NADH, ATP level and the protein expression of Thrb and SIRT3, and the promotive effect on apoptosis. ChIPBase was used to predict the binding region of Thrb and SIRT3. Dual luciferase reporter gene and Chromatin immune precipitation (ChIP) assays were employed to verify the relationship between Thrb and promoter of SIRT3 mRNA. Overexpression of Thrb recovered Aß42 induced metabolic dysfunction, while Thrb silence aggravated Aß42 induced metabolic dysfunction. Moreover, Thrb silence or 3-TYP (a selective inhibitor of SIRT3) treatment abolished the amelioration of curcumin on Aß42 induced metabolic dysfunction. Additionally, curcumin attenuated memory deficits in Amyloid precursor protein transgenic (APPTG) mice. Collectively, curcumin alleviated Aß42-induced neuronal metabolic dysfunction through increasing Thrb expression and SIRT3 activity and improved cognition in APPTG mice.


Assuntos
Doença de Alzheimer/fisiopatologia , Peptídeos beta-Amiloides/toxicidade , Cognição/efeitos dos fármacos , Curcumina/farmacologia , Doenças Metabólicas/tratamento farmacológico , Neurônios/efeitos dos fármacos , Fragmentos de Peptídeos/toxicidade , Sirtuína 3/metabolismo , Receptores beta dos Hormônios Tireóideos/metabolismo , Animais , Anti-Inflamatórios não Esteroides/farmacologia , Doenças Metabólicas/induzido quimicamente , Doenças Metabólicas/metabolismo , Doenças Metabólicas/patologia , Camundongos , Camundongos Transgênicos , Neurônios/metabolismo , Neurônios/patologia , Sirtuína 3/genética , Receptores beta dos Hormônios Tireóideos/genética
10.
Med Oncol ; 38(9): 100, 2021 Jul 24.
Artigo em Inglês | MEDLINE | ID: mdl-34302533

RESUMO

The Estudo de Descontinuação de Imatinibe após Pioglitazona (EDI-PIO) is a single-center, longitudinal, prospective, phase 2, non-randomized, open, clinical trial (NCT02852486, August 2, 2016 retrospectively registered) for the discontinuation of imatinib after concomitant use of pioglitazone, being the first of its kind in a Brazilian population with chronic myeloid leukemia. Due to remaining of leukemic quiescent cells that are not affected by tyrosine kinase inhibitors, it has been suggested the use of pioglitazone, a PPARγ agonist, together with imatinib as a strategy for the maintenance of deep molecular response. The clinical benefit to this association is still controversial, and the metabolic alteration along this process remains unclear. Therefore, we applied a metabolomic protocol using high-resolution mass spectrometry to profile plasmatic metabolic response of a prospective cohort of ten individuals under discontinuation of imatinib and pioglitazone protocol. By comparing patients under pioglitazone and imatinib treatment with imatinib monotherapy and discontinuation phase, we were able to annotate 41 and 36 metabolites, respectively. The metabolic alterations observed during imatinib-pioglitazone combined therapy are associated with an extensive lipid remodeling, with activation of ß-oxidation pathway, in addition to the presence of markers that suggest mitochondrial dysfunction.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Biomarcadores Tumorais/metabolismo , Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Doenças Metabólicas/patologia , Metaboloma , Suspensão de Tratamento , Adulto , Idoso , Feminino , Seguimentos , Humanos , Mesilato de Imatinib/administração & dosagem , Leucemia Mielogênica Crônica BCR-ABL Positiva/patologia , Estudos Longitudinais , Masculino , Doenças Metabólicas/induzido quimicamente , Doenças Metabólicas/metabolismo , Pessoa de Meia-Idade , Ensaios Clínicos Controlados não Aleatórios como Assunto , Pioglitazona/administração & dosagem , Prognóstico , Estudos Prospectivos , Estudos Retrospectivos , Adulto Jovem
11.
Addict Biol ; 26(6): e13062, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34114299

RESUMO

Methamphetamine (METH) abuse has become a global public health problem. However, the potential mechanisms involving METH-induced metabolic disorders have thus far remained poorly understood. Metabolomics can provide a clue for the cause of apparent changes and consequently be used to investigate the METH-induced dysregulation of metabolite expression and the mechanism of metabolic disorder mechanism. This laboratory investigation included 80 METH abusers and 80 healthy people. The serum metabolites were detected and analysed by gas chromatography/time-of-flight mass spectrometry. Raw data were processed with the software MS DIAL, which includes deconvolution, peak alignment and compound identification. The data matrix was processed by univariate and multivariate analyses for significant metabolite screening with the criteria of variable importance in projection values > 1, fold change > 1.5 and the t test (p value < 0.05). Significant differences in 16 metabolites (deoxycholic acid, cholic acid, hydroxylamine, etc.) in serum were found between the METH abuse group and the control group. Energy metabolic pathways and several amino acid metabolic pathways (alanine, aspartic acid and glutamate metabolism and tryptophan metabolism) were primarily involved. Further analysis indicated that the area under the receiver operating characteristic curve (AUC) was 0.998 for these 16 metabolites. Among the metabolites, three carbohydrates (d-ribose, cellobiose and maltotriose) had an AUC of 0.975, which were determined as potential markers of abuse. We observed metabolic disturbances in METH abusers, particularly perturbation in energy metabolism and amino acid metabolism, which can provide new insights into the search for biomarkers and the mechanisms underlying the adverse effects of METH on human health.


Assuntos
Transtornos Relacionados ao Uso de Anfetaminas/fisiopatologia , Doenças Metabólicas/induzido quimicamente , Redes e Vias Metabólicas/efeitos dos fármacos , Metabolômica/métodos , Metanfetamina/efeitos adversos , Adulto , Transtornos Relacionados ao Uso de Anfetaminas/sangue , Biomarcadores , Estudos Transversais , Feminino , Cromatografia Gasosa-Espectrometria de Massas , Humanos , Masculino , Doenças Metabólicas/sangue , Doenças Metabólicas/fisiopatologia , Pessoa de Meia-Idade , Curva ROC
12.
Mol Nutr Food Res ; 65(10): e2000943, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33650755

RESUMO

SCOPE: Coconut oil (CO) diets remain controversial due to the possible association with metabolic disorder and obesity. This study investigates the metabolic effects of a low amount of CO supplementation. METHODS AND RESULTS: Swiss male mice are assigned to be supplemented orally during 8 weeks with 300 µL of water for the control group (CV), 100 or 300 µL of CO (CO100 and CO300) and 100 or 300 µL of soybean oil (SO; SO100 and SO300). CO led to anxious behavior, increase in body weight gain, and adiposity. In the hypothalamus, CO and SO increase cytokines expression and pJNK, pNFKB, and TLR4 levels. Nevertheless, the adipose tissue presented increases macrophage infiltration, TNF-α and IL-6 after CO and SO consumption. IL-1B and CCL2 expression, pJNK and pNFKB levels increase only in CO300. In the hepatic tissue, CO increases TNF-α and chemokines expression. Neuronal cell line (mHypoA-2/29) exposed to serum from CO and SO mice shows increased NFKB migration to the nucleus, TNF-α, and NFKBia expression, but are prevented by inhibitor of TLR4 (TAK-242). CONCLUSIONS: These results show that a low-dose CO changes the behavioral pattern, induces inflammatory pathway activation, TLR4 expression in healthy mice, and stimulates the pro-inflammatory response through a TLR4-mediated mechanism.


Assuntos
Comportamento Animal/efeitos dos fármacos , Óleo de Coco/administração & dosagem , Óleo de Coco/efeitos adversos , Doenças Hipotalâmicas/induzido quimicamente , Inflamação/induzido quimicamente , Doenças Metabólicas/induzido quimicamente , Adiposidade/efeitos dos fármacos , Animais , Glicemia/análise , Suplementos Nutricionais , Masculino , Camundongos , Atividade Motora/efeitos dos fármacos , Receptor 4 Toll-Like/antagonistas & inibidores , Receptor 4 Toll-Like/fisiologia , Aumento de Peso/efeitos dos fármacos
13.
Psychopharmacology (Berl) ; 238(7): 1979-1990, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33774704

RESUMO

RATIONALE AND OBJECTIVE: Clozapine (CLZ) is the most effective drug for treatment-resistant schizophrenia but is associated with many side effects, including glycometabolism disorders. Immunological mechanisms may be involved in the development of clozapine side effects. Research relating the immunomodulatory effects of clozapine and its early markers to clinically relevant adverse events is needed to reduce the harmful side effects of clozapine. This study aimed to investigate the role of proinflammatory cytokines in clozapine-associated glycometabolism disorders. METHODS: We measured the effect of a range of doses of clozapine on glycometabolism-related parameters and proinflammatory cytokines levels in mice peripheral blood. We also examined the differences between these indicators in the peripheral blood of clozapine-treated schizophrenia patients and healthy controls. Furthermore, we detected proinflammatory cytokines expression in mice pancreatic tissue. RESULTS: Following clozapine administration, glucagon significantly decreased in mouse serum, and proinflammatory cytokine IL-ß levels markedly increased. Clozapine reliably increased proinflammatory cytokines (IL-1ß, IL-6, and TNF-α) expression in murine pancreatic tissue. Compared with healthy controls, clozapine-treated patients' BMI, blood glucose, and proinflammatory cytokines (IL-1ß, IL-6, and TNF-α) increased significantly. In clozapine-treated patients, a higher clozapine daily dosage was associated with higher levels of the proinflammatory cytokines IL-1ß and IL-6, and a significant positive correlation was observed between blood glucose levels and the proinflammatory cytokines IL-6 and TNF-α. CONCLUSION: Findings from animal experiments and clinical trials have shown clear evidence that clozapine has a regulatory effect on immune-related proinflammatory cytokines and influences glycometabolism indicators.


Assuntos
Antipsicóticos/efeitos adversos , Clozapina/efeitos adversos , Citocinas/sangue , Mediadores da Inflamação/sangue , Doenças Metabólicas/sangue , Doenças Metabólicas/induzido quimicamente , Adulto , Animais , Antipsicóticos/uso terapêutico , Glicemia/efeitos dos fármacos , Glicemia/metabolismo , Clozapina/uso terapêutico , Humanos , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Pessoa de Meia-Idade , Esquizofrenia/sangue , Esquizofrenia/tratamento farmacológico , Fator de Necrose Tumoral alfa/sangue
14.
J Nutr ; 151(3): 503-512, 2021 03 11.
Artigo em Inglês | MEDLINE | ID: mdl-33571370

RESUMO

BACKGROUND: Diet-induced disordered phospholipid metabolism and disturbed macrophage metabolism contribute to the pathogenesis of metabolic diseases. However, the effects of oleate, a main dietary fatty acid, on macrophage phospholipid metabolism are unclear. OBJECTIVES: We aimed to discover oleate-induced disorders of macrophage phospholipid metabolism and potential therapeutic targets for treating diet-related metabolic diseases. METHODS: RAW 264.7 cells were exposed to 65 µg oleate/mL, within the blood concentration range of humans and mice, to trigger disorders of phospholipid metabolism. Meanwhile, WY-14643 and pioglitazone, 2 drugs widely used for treating metabolic diseases, were employed to prevent oleate-induced disorders of macrophage phospholipid metabolism. Subsequently, an untargeted metabolomics approach based on liquid chromatography-mass spectrometry was used to discover relevant metabolic disorders and potential therapeutic targets. RESULTS: We showed that 196 metabolites involved in phospholipid metabolism were altered upon oleate treatment and interventions of WY-14643 and pioglitazone (P < 0.05, 2-tailed Mann-Whitney U test). Notably, most lysophospholipids were decreased, whereas most phospholipids were increased in oleate-treated macrophages. Phosphatidylethanolamines accumulated most among phospholipids, and their acyl chain polyunsaturation increased in oleate-treated macrophages. Additionally, saturated fatty acids were decreased, whereas polyunsaturated fatty acids were increased in oleate-treated macrophages. Furthermore, changes in phosphatidylglycerols, phosphatidylinositols, cardiolipins, phosphatidates, lysophosphatidylglycerols, and acylcarnitines in oleate-treated macrophages could be attenuated or even abolished by WY-14643 and/or pioglitazone treatment. CONCLUSIONS: Oleate induced accumulation of various phospholipids, increased acyl chain polyunsaturation of phosphatidylethanolamines, and decreased lysophospholipids in RAW 264.7 macrophages. This study suggests macrophage phospholipid and fatty acid metabolism as potential therapeutic targets for intervening diet-related metabolic diseases.


Assuntos
Metabolismo dos Lipídeos/efeitos dos fármacos , Macrófagos/metabolismo , Doenças Metabólicas/induzido quimicamente , Metabolômica , Ácido Oleico/farmacologia , Fosfolipídeos/metabolismo , Animais , Cromatografia Líquida , Espectrometria de Massas , Camundongos , Modelos Animais , Pioglitazona/farmacologia , Pirimidinas/farmacologia , Células RAW 264.7
15.
Pharmacol Res ; 165: 105417, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33401003

RESUMO

Carrageenan (CGN) is a common food additive, and questions have been raised regarding its safety for human consumption. The purpose of this study was to investigate the impact of κ-CGN on glucose intolerance and insulin resistance from the perspective that κ-CGN may interfere with insulin receptor function and affect insulin sensitivity and signaling, thereby leading to body weight loss. The health effects of κ-CGN on C57BL/6 mice were assessed over a 90-d period by monitoring changes in body weight, glucose tolerance, insulin tolerance, fasting glucose and insulin levels, and expression of insulin-pathway-related proteins. Furthermore, HepG2 cells were used to detect the binding of κ-CGN on insulin receptor and measure its effect on downstream signal transduction. In mice, κ-CGN treatment reduced weight gain without affecting food intake. Glucose and insulin tolerance tests revealed that κ-CGN treatment increased blood glucose levels and glycosylated hemoglobin levels, while hepatic and muscle glycogen levels were decreased, suggesting that κ-CGN affected glucose metabolism in mice. Interestingly, κ-CGN treatment did not cause typical diabetic symptoms in mice, as indicated by low levels of fasting and postprandial blood glucose, in addition to normal pancreatic tissue and insulin secretion. The binding studies revealed that κ-CGN could competitively bind to the insulin receptor with FITC-insulin and thereby disrupt PI3K and Akt activation, thus suppressing expression of glucose transporters and glycogen synthase. In summary, this study revealed that κ-CGN reduced weight gain without affecting food intake, but impaired glucose metabolism in mice by interfering with insulin binding to receptors, thereby affecting the sensitivity of insulin and inhibiting the insulin PI3K/AKT signaling pathway, causing non-diabetic weight gain reduction.


Assuntos
Carragenina/efeitos adversos , Antagonistas da Insulina/efeitos adversos , Insulina/metabolismo , Doenças Metabólicas/induzido quimicamente , Animais , Western Blotting , Citometria de Fluxo , Glucose/metabolismo , Células Hep G2 , Humanos , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Fosfatidilinositol 3-Quinases/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Reação em Cadeia da Polimerase em Tempo Real , Transdução de Sinais/efeitos dos fármacos , Aumento de Peso/efeitos dos fármacos
16.
Phytother Res ; 35(4): 2005-2024, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33315269

RESUMO

The underlying mechanisms of bisphenol A (BPA)-induced metabolic disorder and the protective impact of Nigella sativa oil (NSO) and thymoquinone (TQ) against BPA-induced metabolic disorder were investigated. Rats were treated as follows: Control, BPA (10 mg/kg), TQ (2 mg/kg), NSO (84 µL/kg), BPA + TQ (0.5, 1, 2 mg/kg), and BPA + NSO (21, 42, 84 µL/kg). BPA was administered by gavage, while, TQ and NSO were injected intraperitoneally (daily, 54 days). The weight, blood pressure, serum parameters [glucose, lipid profile, hepatic enzymes, insulin, interlukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α), leptin, adiponectin], malondialdehyde (MDA), glutathione (GSH) and insulin signaling pathways [insulin receptor substrate (p-IRS,IRS); kinase (p-Akt,Akt); glycogen synthase kinase (p-GS3K,GS3K)] were measured. BPA increased the blood pressure, MDA, lipid profile, hepatic enzymes, insulin, IL-6, TNF-α, and leptin, and decreased the GSH and phosphorylated forms of IRS, Akt, GS3K but did not alter weight, glucose, IRS, AKT, and GS3K in the liver. Administration of NSO or TQ with BPA reduced the blood pressure, liver level of MDA, lipid profile, hepatic enzymes, insulin, IL-6, TNF-α, leptin, and increased the liver level of GSH and p-IRS, p-AKT, p-GS3K. TQ and NSO are thought to be effective in controlling metabolic disorders induced by BPA.


Assuntos
Compostos Benzidrílicos/efeitos adversos , Benzoquinonas/química , Doenças Metabólicas/induzido quimicamente , Doenças Metabólicas/tratamento farmacológico , Nigella sativa/química , Fenóis/efeitos adversos , Animais , Humanos , Masculino , Projetos Piloto , Ratos , Ratos Wistar
17.
Arch Gynecol Obstet ; 302(5): 1169-1179, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32770354

RESUMO

PURPOSE: To investigate the metabolic impact of currently used therapies in polycystic ovary syndrome (PCOS). METHODS: This is an observational, retrospective and transversal protocol. A small cohort of 133 patients, aged 14-48 years, diagnosed with PCOS was divided into four experimental groups: 1) untreated PCOS patients (n = 51); 2) PCOS patients treated with one of the following therapies (n = 82): a) combined oral contraceptives (COC, n = 35); b) metformin (n = 11); and c) inositols (n = 36). RESULTS: Although only < 10% of patients included in this cohort can be strictly encompassed in the development of metabolic syndrome, approximately 20% had insulin resistance. In PCOS patients, COC treatment modified the hormonal profile and worsened lipid parameters (increasing cholesterol and triglyceride levels) and insulin resistance, whereas inositol therapies improved significantly insulin resistance and glycosylated hemoglobin, reducing cholesterol and triglyceride levels. In these women, obesity was associated with greater alterations in lipid and glycemic metabolism and with higher blood pressure levels. PCOS patients with phenotype A presented vaster alterations in lipid metabolism and higher values of glycosylated hemoglobin as well as blood pressure compared to other PCOS phenotypes. CONCLUSIONS: Results in this paper suggest that inositol therapies (alone or combined with COC) are the most useful therapies with the best benefits against PCOS symptoms. Thus, integrative treatment may become a more efficient long-term choice to control PCOS symptoms. Furthermore, obesity can be considered as an adverse symptom and calorie restriction a key element of combined treatment in PCOS, not only for fertility management but also in long-term metabolic sequelae.


Assuntos
Anticoncepcionais Orais Combinados/uso terapêutico , Inositol/uso terapêutico , Doenças Metabólicas/induzido quimicamente , Metformina/uso terapêutico , Síndrome do Ovário Policístico/complicações , Síndrome do Ovário Policístico/tratamento farmacológico , Adolescente , Adulto , Glicemia , Anticoncepcionais Orais Combinados/efeitos adversos , Feminino , Hemoglobinas Glicadas , Humanos , Resistência à Insulina , Síndrome Metabólica/induzido quimicamente , Síndrome Metabólica/complicações , Pessoa de Meia-Idade , Obesidade/induzido quimicamente , Obesidade/complicações , Síndrome do Ovário Policístico/sangue , Estudos Retrospectivos , Aumento de Peso/efeitos dos fármacos , Adulto Jovem
18.
Crit Rev Oncol Hematol ; 151: 102979, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32480349

RESUMO

Treatment of oncologic patients has progressed greatly the last few years with the development of immune checkpoint inhibitors (ICPIs). These drugs are associated with the immune system and, thus, may cause side effects of immune origin, the so called immune related adverse events (irAEs). Immune related AEs may actually affect all organs and systems and frequently resemble clinical entities commonly encountered in clinical practice. As ICPIs have improved both quality of life and life expectancy, clinicians of various specialties may need to deal with irAEs in their everyday practice. Therefore, they should be able to recognize them timely and treat them accordingly. Herein, we review the pathophysiology, clinical manifestations and treatment of irAEs.


Assuntos
Antineoplásicos Imunológicos/efeitos adversos , Pontos de Checagem do Ciclo Celular/efeitos dos fármacos , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Imunoterapia/efeitos adversos , Doenças Metabólicas/induzido quimicamente , Neoplasias/tratamento farmacológico , Humanos , Qualidade de Vida
19.
An. bras. dermatol ; 95(3): 271-277, May-June 2020. tab
Artigo em Inglês | LILACS, ColecionaSUS | ID: biblio-1130879

RESUMO

Abstract Finasteride is a 5α-reductase enzyme inhibitor that has been approved for the treatment of male androgenic alopecia since 1997. Over time, it has been considered a safe and well-tolerated drug with rare and reversible side effects. Recently there have been reports of adverse drug-related reactions that persisted for at least three months after discontinuation of this drug, and the term post-finasteride syndrome arose. It includes persistent sexual, neuropsychiatric, and physical symptoms. Studies to date cannot refute or confirm this syndrome as a nosological entity. If it actually exists, it seems to occur in susceptible people, even if exposed to small doses and for short periods, and symptoms may persist for long periods. Based on currently available data, the use of 5α-reductase inhibitors in patients with a history of depression, sexual dysfunction, or infertility should be carefully and individually assessed.


Assuntos
Humanos , Masculino , Disfunções Sexuais Fisiológicas/induzido quimicamente , Finasterida/efeitos adversos , Inibidores de 5-alfa Redutase/efeitos adversos , Espermatozoides/efeitos dos fármacos , Síndrome , Doenças Cardiovasculares/induzido quimicamente , Fatores de Risco , Infertilidade/induzido quimicamente , Transtornos Mentais/induzido quimicamente , Doenças Metabólicas/induzido quimicamente
20.
Hum Exp Toxicol ; 39(9): 1190-1199, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32207356

RESUMO

Earlier, we demonstrated that chronic exposure to monocrotophos (MCP) elicits insulin resistance in rats along with increased white adipose tissue (WAT) weights. This study was carried out to delineate the biochemical and molecular changes in adipose tissues of rats subjected to chronic exposure to MCP (0.9 and 1.8 mg/kg bw/d for 180 days). Pesticide-treated rats exhibited increased fasting glucose and hyperinsulinemia as well as dyslipidemia. Tumor necrosis factor-alpha and leptin levels were elevated, while adiponectin level was suppressed in plasma of treated rats. MCP treatment caused discernable increase in the weights of perirenal and epididymal WAT. Acetyl coenzyme A carboxylase, fatty acid synthase, glyceraldehyde-3-phosphate dehydrogenase, lipin-1, and lipolytic activities were elevated in the WAT of MCP-treated rats. Corroborative changes were observed in the expression profile of proteins that are involved in lipogenesis and adipose tissue differentiation. Our results clearly demonstrate that long-term exposure to organophosphorus insecticides (OPIs) such as MCP has far-reaching consequences on metabolic health as evidenced by the association of adipogenic outcomes with insulin resistance, hyperinsulinemia, endocrine dysregulations, and dyslipidemia. Taken together, our results suggest that long-term exposure to OPI may be a risk factor for metabolic dysregulations.


Assuntos
Tecido Adiposo Branco/efeitos dos fármacos , Homeostase/efeitos dos fármacos , Inseticidas/toxicidade , Doenças Metabólicas/induzido quimicamente , Monocrotofós/toxicidade , Tecido Adiposo Branco/metabolismo , Animais , Glicemia/análise , Hiperinsulinismo/induzido quimicamente , Hipoglicemia/induzido quimicamente , Resistência à Insulina , Lipídeos/sangue , Lipólise , Masculino , Ratos , Ratos Wistar , Aumento de Peso
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