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1.
Artigo em Inglês | MEDLINE | ID: mdl-38884675

RESUMO

Gemcitabine (GEM) is a first-line treatment for pancreatic ductal adenocarcinoma (PDAC) patients, causing side effects and poor overall survival. Eighty percent of patients often develop resistance rapidly to GEM. Developing therapeutic approaches and increasing sensitivity to gemcitabine in PDAC has become one of the challenges in cancer research. We synthesized GEM-loaded NPs prepared with a method that combines ultrasonication and ionotropic gelation to overcome GEM-related limitations in PDAC. CFPAC-1 cells were treated with increased concentrations of GEM, empty chitosan, and GEM-loaded NPs (0.66, 1.32, 2.64, 5.32 µg/ml) for up to 48 h. Empty chitosan NPs did not show toxicity on L929 cells. Antioxidant enzyme activities, including glucose 6-phosphate dehydrogenase (G6PD), 6-phosphogluconate dehydrogenase (6-PGD), glutathione reductase (GR), glutathione s-transferase (GST), and glutathione peroxidase (GPx), significantly reduced in GEM-loaded NPs compared to the GEM associated with increased oxidative stress, PPP, and glycolysis. Bcl-xL, NOXA/mcl-1, and Ca2+ levels significantly increased in GEM-loaded NP-administered cells compared to the GEM and control groups. In contrast, JNK, p38, STAT3, Akt, and CREB levels significantly decreased in the GEM-loaded NP group, addressing enhanced apoptotic response compared to the GEM alone. Increased ferroptosis activity in GEM-loaded NP-administered groups has been validated via decreased antioxidant enzyme activities, increased cytosolic Fe, Zn, Mg, and Mn levels, and reduced GPx activity compared to the GEM and control groups. For the first time in the literature, we showed biocompatible GEM-loaded NPs enhanced apoptotic and ferroptotic response in CFPAC-1 cells via downregulation of antioxidant, glycolysis, and PPP metabolism compared to the GEM alone.

2.
Front Endocrinol (Lausanne) ; 14: 1128202, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37274322

RESUMO

Phthalates are widely used as plasticizers in the industry and are found in cosmetics, food and drink packaging, drugs, toys, households, medical devices, pesticides, personal care products, and paints. Phthalates exert endocrine disrupting and peroxisome proliferator effects in humans and wildlife associated with the pathogenesis of various diseases, including diabetes, obesity, infertility, cardiovascular diseases, metabolic syndrome, and cancer. Since phthalates are metabolized in the liver, which regulates the body's energy metabolism, long or short-term exposure to the phthalates is associated with impaired glucose, lipid, and oxidative stress metabolisms contributing to liver toxicity. However, the impact of in-utero exposure to DHP and DCHP on liver metabolism has not been studied previously. Thus, in this study, we evaluated serum biochemistry parameters, hematological markers, histopathological changes, and oxidative and pentose phosphate pathway (PPP) metabolisms in the liver following in-utero DHP and DCHP administration, respectively, in male and female rats. We found increased relative and absolute liver weights and impaired triglyceride, alanine transaminase (ALT), lactate dehydrogenase (LDH), and alkaline phosphatase (ALP) levels upon dicyclohexyl phthalate (DCHP) and di-n-hexyl phthalate (DHP). Histopathological changes, including congestion, sinusoidal dilatation, inflammatory cell infiltration, cells with a pyknotic nucleus, lysis of hepatocytes, and degeneration of hepatic parenchyma have been observed in the liver samples of DHP and DCHP dose groups. Moreover, increased glutathione s-transferase (GST), glucose 6-phosphate dehydrogenase (G6PD), and glutathione reductase (GR) activities have been found in the liver samples of DHP and DCHP-treated rats associated with impaired pentose phosphate pathway (PPP) and oxidative stress metabolism. First time in the literature, we showed that in-utero exposure to DHP and DCHP causes liver damage associated with impaired oxidative stress metabolism in male and female rats. Our data may guide researchers and governments to regulate and restrict phthalates in industrial products.


Assuntos
Fígado , Estresse Oxidativo , Humanos , Ratos , Masculino , Feminino , Animais , Fígado/metabolismo
6.
Cells ; 11(22)2022 11 11.
Artigo em Inglês | MEDLINE | ID: mdl-36428998

RESUMO

Amyotrophic lateral sclerosis (ALS) is the most common motor neuron disease. Since there are no pathognomonic tests for ALS prognoses; clinical diagnoses of the disease take time and are usually difficult. Prognostic biomarkers are urgently needed for rapid and effective ALS prognoses. Male albino rats were divided into ten groups based on age: 0 (40-45 days old), A (70-75 days old), B (90-95 days old), C (110-115 days old), and D (130-135 days old). Each group was divided into two subgroups according to its mutation status: wild type (SOD1WT) or mutated (SOD1G93A). Serum biochemistry and hematological parameters were measured in 90 rats to evaluate possible biomarkers for faster ALS diagnoses and prognoses. Weight loss, cholesterol, creatinine, glucose, total bilirubin (TBIL), blood urine nitrogen (BUN), c-peptide, glucagon, PYY, white blood cell (WBC), lymphocyte (LYM), monocyte (MID), granulocyte (GRAN), red cell distribution width with standard deviation (RDW-SD), red cell distribution width with the coefficient of variation (RDW-CV), platelet (PLT), mean platelet volume (MPV), platelet distribution width (PDW), and procalcitonin (PCT) levels were changed in the SOD1G93A rats compared to the SOD1WT rats independently from aging. For the first time in the literature, we showed promising hematological and serum biochemistry parameters in the pre-symptomatic and symptomatic stages of ALS by eliminating the effects of aging. Our results can be used for early diagnoses and prognoses of ALS, improving the quality of life and survival time of ALS patients.


Assuntos
Esclerose Lateral Amiotrófica , Animais , Masculino , Esclerose Lateral Amiotrófica/diagnóstico , Esclerose Lateral Amiotrófica/genética , Biomarcadores , Modelos Animais de Doenças , Diagnóstico Precoce , Qualidade de Vida , Superóxido Dismutase , Superóxido Dismutase-1/genética , Ratos
7.
Histochem Cell Biol ; 158(3): 279-296, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35849204

RESUMO

A high fructose diet is a major cause of diabetes and various metabolic disorders, including fatty liver. In this study, we investigated the effects of resveratrol and vitamin D (VitD) treatments on endoplasmic reticulum (ER) stress, oxidative stress, inflammation, apoptosis, and liver regeneration in a rat model of type 2 diabetes mellitus, namely, T2DM Sprague-Dawley rats. This T2DM rat model was created through a combination treatment of a 10% fructose diet and 40 mg/kg streptozotocin (STZ). Resveratrol (1 mg/kg/day) and VitD (170/IU/week) were administered alone and in combination to both the diabetic and control groups. Immunohistochemical staining was performed to evaluate PCNA, NF-κB, TNF-α, IL-6, IL-1ß, GRP78, and active caspase-3 in liver tissue. The TUNEL method and Sirius red staining were used to determine apoptosis and fibrosis, respectively. G6PD, 6-PGD, GR, and GST activities were measured to determine oxidative stress status. We found that the expressions of cytokines (TNF-α, IL-6, and IL-1ß) correlated with NF-κB activation and were significantly increased in the T2DM rats. Increased GRP78 expression, indicating ER stress, increased in apoptotic cells, enhanced caspase-3 activation, and collagen accumulation surrounding the central vein were observed in the T2DM group compared with the other groups. The combination VitD + resveratrol treatment improved antioxidant defense via increasing G6PD, 6-PGD, GR, and GST activities compared to the diabetic groups. We concluded that the combined administration of resveratrol with VitD ameliorates the adverse effects of T2DM by regulating blood glucose levels, increasing antioxidant defense mechanisms, controlling ER stress, enhancing tissue regeneration, improving inflammation, and reducing apoptosis in liver cells. In conclusion, this study indicates that the combination treatment of resveratrol + VitD can be a beneficial option for preventing liver damage in fructose-induced T2DM.


Assuntos
Diabetes Mellitus Tipo 2 , Estresse do Retículo Endoplasmático , Cirrose Hepática , Resveratrol , Vitamina D , Animais , Antioxidantes/metabolismo , Apoptose , Caspase 3/metabolismo , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/metabolismo , Dieta , Frutose/efeitos adversos , Inflamação/tratamento farmacológico , Interleucina-6/metabolismo , Cirrose Hepática/tratamento farmacológico , NF-kappa B/metabolismo , Estresse Oxidativo , Ratos , Ratos Sprague-Dawley , Resveratrol/uso terapêutico , Estreptozocina , Fator de Necrose Tumoral alfa/metabolismo , Vitamina D/uso terapêutico
9.
Front Bioeng Biotechnol ; 10: 810243, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35284425

RESUMO

Amyotrophic lateral sclerosis (ALS) is the most common motor neuron disease, and ALS incidence is increasing worldwide. Patients with ALS have respiratory failure at the disease's end stages, leading to death; thus, the lung is one of the most affected organs during disease progression. Tissue stiffness increases in various lung diseases because of impaired extracellular matrix (ECM) homeostasis leading to tissue damage and dysfunction at the end. According to the literature, oxidative stress is the major contributor to ECM dysregulation, and mutant protein accumulation in ALS have been reported as causative to tissue damage and oxidative stress. In this study, we used SOD1G93A and SOD1WT rats and measured lung stiffness of rats by using a custom-built stretcher, where H&E staining is used to evaluate histopathological changes in the lung tissue. Oxidative stress status of lung tissues was assessed by measuring glucose 6-phosphate dehydrogenase (G6PD), 6-phosphogluconate dehydrogenase (6-PGD), glutathione reductase (GR), glutathione s-transferase (GST), catalase (CAT), and superoxide dismutase 1 (SOD1) levels. Western blot experiments were performed to evaluate the accumulation of the SOD1G93A mutated protein. As a result, increased lung stiffness, decreased antioxidant status, elevated levels of oxidative stress, impaired mineral and trace element homeostasis, and mutated SOD1G93A protein accumulation have been found in the mutated rats even at the earlier stages, which can be possible causative of increased lung stiffness and tissue damage in ALS. Since lung damage has altered at the very early stages, possible therapeutic approaches can be used to treat ALS or improve the life quality of patients with ALS.

11.
Pharmacol Rep ; 74(1): 124-134, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34657267

RESUMO

BACKGROUND: Type 2 Diabetes Mellitus is a chronic metabolic disease that causes endothelial damage and is an important risk factor for atherosclerosis. In the present study vitamin D3 supplementation in rats was used to determine the role of Osteoprotegerin (OPG)/Receptor activator kB ligand (RANKL) signalling in endothelial damage and changes in the expression levels of genes involved in this pathway. We hypothesized that vitamin D3 supplementation affects OPG and RANKL activity in the aorta. METHODS: Diabetes was induced in rats via injections of 40 mg/kg of streptozotocin followed by a high fructose (10%) diet. Group 2 (healthy) and 4 (diabetic) received 170 IU/kg of vitamin D3 weekly for 5 weeks, while Group 1 (healthy) and 2 (diabetic) received sterile saline. The aortas of each group were collected to analyse mRNA expression using the real-time PCR method and also to evaluate magnesium and calcium levels using inductively coupled plasma mass spectrometry. RESULTS: Opg and Il-1b expression levels were significantly associated with both diabetes and vitamin D3 supplementation in the aortas of the study groups (p ≤ 0.05). Opg mRNA expression was also found to correlate with both Icam-1 and Nos3 mRNA expression levels (r = 0.699, p = 0.001 and r = 0.622, p = 0.003, respectively). In addition, when mineral levels in the aortic tissues were compared among all groups, it was found that the interaction of diabetes and vitamin D3 supplementation significantly affected Mg levels and Mg/Ca ratios. CONCLUSIONS: It is concluded that vitamin D3 supplementation has a modulatory effect on OPG/RANKL activity in the vessel wall by ameliorating endothelial damage in diabetes. This effect may contribute to the regulation of cytokine-mediated vascular homeostasis and mineral deposition in the aorta; therefore, further comprehensive studies are proposed to demonstrate this relationship.


Assuntos
Colecalciferol/farmacologia , Angiopatias Diabéticas , Endotélio Vascular , Osteoprotegerina/metabolismo , Ligante RANK/metabolismo , Transdução de Sinais/efeitos dos fármacos , Animais , Aorta/patologia , Hormônios e Agentes Reguladores de Cálcio/farmacologia , Angiopatias Diabéticas/tratamento farmacológico , Angiopatias Diabéticas/metabolismo , Endotélio Vascular/efeitos dos fármacos , Endotélio Vascular/metabolismo , Regulação da Expressão Gênica/efeitos dos fármacos , Ratos , Resultado do Tratamento
12.
Artigo em Inglês | MEDLINE | ID: mdl-33719907

RESUMO

COVID-19 has become a major public health problem since December, 2019 and no highly effective drug has been found until now. Numbers of infected people and deaths by COVID-19 are increasing every day worldwide, therefore self-isolation and protection are highly recommended to prevent the spread of the virus and especially to protect major risk groups such as the elderly population and people with comorbidities including diabetes, hypertension, cancer, cardiovascular diseases and metabolic syndrome. On the other hand, young people without any secondary disease have died by COVID-19 as well. In this study we compared two male patients infected by COVID-19 at the same age and one of them was diagnosed with G6PD deficiency. Both COVID-19 and G6PD deficiency enhance the risk of hemolysis and thrombosis. Serum biochemistry, hemogram and immunological parameters showed that risk of hemolysis and thrombosis may increase in the G6PD deficient patient infected by COVID-19.


Assuntos
COVID-19/genética , Deficiência de Glucosefosfato Desidrogenase/genética , Glucosefosfato Desidrogenase/genética , Trombose/genética , Adulto , COVID-19/sangue , COVID-19/complicações , COVID-19/virologia , Deficiência de Glucosefosfato Desidrogenase/sangue , Deficiência de Glucosefosfato Desidrogenase/complicações , Deficiência de Glucosefosfato Desidrogenase/patologia , Hemólise/fisiologia , Humanos , Masculino , Fatores de Risco , SARS-CoV-2/genética , SARS-CoV-2/patogenicidade , Trombose/sangue , Trombose/etiologia , Trombose/virologia
13.
Transfus Apher Sci ; 60(3): 103080, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33608217

RESUMO

The world has been encountered with COVID-19 pandemic since at the beginning of 2020 and the number of infected people by COVID-19 is increasing every day. Despite various studies conducted by researchers and doctors, no treatment has been developed until now, therefore self-protection and isolation are strongly recommended to stop the spread of the virus. The elderly population and people with chronic diseases such as hypertension, cardiovascular diseases, diabetes, and cancer are categorized as risk groups, however, we suggest that people with hemoglobinopathies or porphyria can be described as risk groups as well. Current in silico studies have revealed that the COVID-19 virus can attack heme and hemoglobin metabolisms which are responsible for the oxygen transport to the tissues, iron metabolism, elevated levels of oxidative stress, and tissue damage. Data of the in silico study have been supported with the biochemistry and hemogram results of the COVID-19 patients, for instance hemoglobin levels decreased and serum ferritin and C-reactive protein levels increased. Indicated biochemistry biomarkers are tightly associated with inflammation, iron overload, and oxidative stress. In conclusion, since people with hemoglobinopathies or porphyria have already impaired heme and hemoglobin metabolism, COVID-19 infection can enhance the adverse effects of impaired hemoglobin metabolism and accelerate the progression of severe symptoms in patients with hemoglobinopathies or porphyria compared to the normal individuals. Thus those people can be considered as a risk group and extra precautions should be applied for them to protect them.


Assuntos
COVID-19/sangue , COVID-19/epidemiologia , Doenças Hematológicas/epidemiologia , Estresse Oxidativo/genética , SARS-CoV-2/patogenicidade , COVID-19/virologia , Doenças Hematológicas/virologia , Humanos , Pandemias
14.
Biol Trace Elem Res ; 199(7): 2644-2652, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32918713

RESUMO

Aortic stiffness represents the major cause of aging and tightly associated with hypertension, atherosclerosis, cardiovascular diseases, and increased mortality. Mechanical characteristics of the aorta play a vital role in the blood flow, circulation, systolic pressure, and aortic stiffness; however, the correlation of trace element and mineral levels with aortic stiffness has not been studied before. Balance in the trace elements and minerals is vital for the biological functions; however, natural aging may alter this balance. Thus, after measuring aortic stiffness of aged and young rat aortas by a custom-built stretcher device, trace element and mineral levels were evaluated via ICP-MS. Also, biomarkers of aging including blood pressure, arterial pressure glucose, insulin levels, and histochemical parameters were investigated as well. Aortic stiffness, blood glucose, plasma insulin, systolic, diastolic, and mean arterial pressure significantly increased by aging in the aorta of aged rats compared with the young ones. Also, Fe, Al, Co, Ni, Zn, Sr, Na, Mg, and K levels increased in the aged aorta samples compared with the young aorta samples of rats. Increased levels of the indicated elements may be correlated with the development and progression of aortic stiffness and vascular complications. Thus, possible mechanisms correlating aortic stiffness with the imbalance in the trace element and mineral levels should be further investigated.


Assuntos
Macas , Oligoelementos , Rigidez Vascular , Envelhecimento , Animais , Aorta , Pressão Sanguínea , Minerais , Ratos
15.
Biotechnol Appl Biochem ; 68(2): 390-391, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32362005

RESUMO

COVID-19 threatens millions of lives, especially elderly population and people with chronic diseases including diabetes, hypertension, cancer, and cardiovascular diseases. Rapid and effective diagnoses are vital for the isolation of infected people and starting treatment immediately to stop the spread of COVID-19 virus. Bioinformatics techniques such as artificial intelligence should be used for collecting the hemogram and serum biochemistry data of all COVID-19- infected people worldwide, even they do not show severe symptoms. These data may help find a biomarker that can be used in combination with the CT results for rapid and accurate diagnosis of COVID-19.


Assuntos
Teste para COVID-19 , COVID-19/sangue , Inteligência Artificial , Biomarcadores/sangue , COVID-19/diagnóstico , Teste para COVID-19/economia , Teste para COVID-19/métodos , Humanos , SARS-CoV-2/isolamento & purificação , Fatores de Tempo
16.
Endocr Regul ; 54(2): 71-76, 2020 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-32597158

RESUMO

OBJECTIVES: Psychoactive drugs are group of compounds used to treat severe mental problems, including psychosis, as well as other conditions. This study assessed clinically relevant side effects of haloperidol and clozapine on the thyroid hormones. METHODS: Haloperidol (0.05 and 2 mg/kg) or clozapine (0.5 and 20 mg/kg) was intraperitoneally injected to male Wistar rats for 28 days. The control group received 2 ml of physiological saline. A chemiluminescent immunoassay was used to measure the plasma levels of thyroid hormones. RESULTS: Plasma concentrations of thyroxine (T4) in rats treated with high-dose (2 mg/kg) of haloperidol decreased significantly compared to the control group (p=0.001). However, both low (0.5 mg/kg) and high clozapine (20 mg/kg) doses did not have a significant effect on the plasma concentrations of T4 and triiodothyronine (T3) (p>0.05). Neither of the compound had a significant effect on T3 plasma concentration levels (p>0.05). CONCLUSIONS: Haloperidol and clozapine act via different mechanisms and may have dissociable effects on thyroid hormones. Following treatment with haloperidol, significant changes in T4, but not in T3, serum levels were observed. Haloperidol and clozapine had different effects on the thyroid hormone levels. These results indicate that antipsychotic treatment can contribute to the thyroid dysfunction. Therefore, greater caution should be applied to the antipsychotics use. The thyroid function of the patients should be closely monitored, while using these drugs.


Assuntos
Antipsicóticos/farmacologia , Clozapina/farmacologia , Haloperidol/farmacologia , Tiroxina/sangue , Tiroxina/efeitos dos fármacos , Tri-Iodotironina/sangue , Tri-Iodotironina/efeitos dos fármacos , Animais , Antipsicóticos/administração & dosagem , Clozapina/administração & dosagem , Haloperidol/administração & dosagem , Injeções Intraperitoneais , Masculino , Ratos , Ratos Wistar
18.
Mol Biol Rep ; 47(6): 4117-4129, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32436042

RESUMO

Near-infrared quantum dots (NIR QDs) are promising candidate for the fluorescent probes due to their better penetration depth, long-lived luminescence with size-tunable photoluminescence wavelengths. Glutathione-coated silver sulfide quantum dots (GSH-Ag2S QDs) were synthesized using AgNO3 and Na2S in the aqueous media and they can give reaction with glutathione reductase (GR) and glutathione-s transferase (GST) enzymes as acting substrate analogue in vitro. Investigation of the toxicity of the nanomaterials are necessary to use them in the medical field and biomedical applications. Thus, in this study we investigated biocompatibility of the GSH-Ag2S QDs in vitro using 293 T and CFPAC-1 cell lines. Cell viability by MTT assay, light microscopy, fluorescence microscopy, oxidative stress enzyme activities and ICP-MS analysis were performed to evaluate the cytotoxicity and internalization of the GSH-Ag2S QDs. GSH-Ag2S QDs showed great biocompatibility with both cell lines and did not cause imbalance in the oxidative stress metabolism. The ultralow solubility product constant of Ag2S QDs (Ksp = 6.3 × 10-50) prevents release of Ag ions into the biological systems that is in agreement with data obtained by ICP-MS. In conclusion, this data prove potential of GSH-Ag2S QDs as a biocompatible optical probe to be used for the detection and/or targeting of GSH impaired diseases including cancer.


Assuntos
Glutationa/metabolismo , Pontos Quânticos/química , Pontos Quânticos/metabolismo , Sobrevivência Celular , Materiais Revestidos Biocompatíveis/análise , Materiais Revestidos Biocompatíveis/química , Materiais Revestidos Biocompatíveis/farmacologia , Glutationa Redutase/metabolismo , Células HEK293/efeitos dos fármacos , Humanos , Teste de Materiais/métodos , Estresse Oxidativo , Pontos Quânticos/análise , Prata/química , Prata/metabolismo , Compostos de Prata/química
20.
Med Hypotheses ; 141: 109736, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32315925

RESUMO

Amyotrophic lateral sclerosis (ALS) is a fatal neurological disorder affected by both genetic and environmental factors. Since ALS is a heterogenic disease, symptoms vary among patients and there are no prognostic biomarkers, 18 months of delay occur from the onset of symptoms to confirmation of the diagnosis. Additionally, there are only two FDA-approved drugs, riluzole and edaravone, which are more effective at the early stages of ALS. Therefore, establishing biomarkers for ALS patients are vital for rapid and accurate diagnosis. Several biomarkers including genetic, biochemical, neurophysiological, cerebrospinal fluid (CSF) and imaging data have been reported for the diagnosis and evaluating progression of ALS, however none of them have been studied in the preclinical stage of ALS and superiority of different biomarkers have not been evaluated until now. We hypothesized that serum biochemical parameters can be used as potential biomarkers for diagnosis and evaluation of ALS progression even at the preclinical stages. Because, serum biochemical parameters are widely used, easy to measure, routine and cheaper approach to measure certain serum biochemistry parameters helping diagnosis and progression of several diseases. Moreover ALS causes hypermetabolic state which leads to malnutrion, losing weight and muscle mass in patients. Thus protein, lipid and carbohydrate metabolisms are impaired in the ALS patients. These impairments can be observed via serum biochemical parameters indicating nutrient metabolism and muscle destruction. Additionally, pathological changes in ALS have been started before disease symptoms manifesting. Therefore we hypothesized serum biochemical parameters can be used to prognosis and evaluate preclinical stages of ALS.


Assuntos
Esclerose Lateral Amiotrófica , Esclerose Lateral Amiotrófica/diagnóstico , Biomarcadores , Progressão da Doença , Humanos , Prognóstico , Riluzol
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