Protective effect of vanillin on diabetic nephropathy by decreasing advanced glycation end products.

PMID: 

Life Sci. 2019 Dec 15 ;239:117088. Epub 2019 Nov 21. PMID: 31759039

Abstract Title: 

Protective effect of vanillin on diabetic nephropathy by decreasing advanced glycation end products in rats.

Abstract: 

AIMS: Diabetic nephropathy (DN) is a common chronic microvascular complication of both types of diabetes mellitus, which leads to renal dysfunction and subsequent need of dialysis and organ transplantation. Advanced glycation end products (AGEs) are metabolic consequence of hyperglycemia and are main contributory factor in the DN pathogenesis through mediating establishment of oxidative status and chronic inflammatory milieu. This study aimed to explore the impact of vanillin on preventing the progression of DN.MAIN METHODS: Experimental DN model was established in rats utilizing streptozotocin. Serum concentration of AGEs and Interleukin-6 (IL-6) and transforming growth factorβ1 (TGFβ1) levels in kidney homogenate were assessed using ELISA technique. Also, we evaluated the expression of nuclear factor kappa B (NF-κB) using immunohistochemistry.KEY FINDINGS: Treatment with vanillin for 8 weeks significantly ameliorated DN. Vanillin significantly decreased hyperglycemia and improved kidney function reflected by decreased serum levels of blood urea nitrogen, creatinine, and decreased proteinuria. Also, vanillin significantly decreased malondialdehyde content and elevated superoxidedismutase activity in renal tissues. Moreover, vanillin decreased renal expression of NF-κB and renal concentrations of IL-6, TGFβ1 and collagen. In addition, vanillin significantly decreased serum AGEs concentration. Also, vanillin attenuated histological abnormalities in kidney architecture.SIGNIFICANCE: Vanillin, which is a cheap and abundant natural product, exhibited anti-AGEs, antioxidant, anti-inflammatory and anti-fibrotic activities. These activities might be helpful and potent mechanisms in preventing the progression of DN.

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Nigella sativa oil mouth rinse improves chemotherapy-induced oral mucositis in patients with acute myeloid leukemia.

PMID: 

Biomed Res Int. 2019 ;2019:3619357. Epub 2019 Oct 30. PMID: 31781612

Abstract Title: 

Oil Mouth Rinse Improves Chemotherapy-Induced Oral Mucositis in Patients with Acute Myeloid Leukemia.

Abstract: 

Objective: The present study aims at evaluating the beneficial effect of(NS) oil mouth rinse in the management of chemotherapy- (CT-) induced oral mucositis (OM) in patients with acute myeloid leukemia (AML).Methods: Fifty-four AML patients were participated in this study and randomly allocated to either the test group or a control group. The patients of the test group received NS oil mouth rinse during 28-day CT, while the participants of the control group received a"magic mouthwash"formula. The primary outcome of this study was the incidence and severity of CT-induced OM in terms of erythema and ulcer. The secondary outcomes were the pain severity score, swallowing function, and the salivary concentrations of interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-).Results: NS oil mouth rinse attenuated the progression of CT-induced OM compared with the control formula (AUC = 5.9 vs. 38.4,

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N. sativa extract significantly decreases the severity of acute radiation dermatitis and delays the onset of moist desquamation in breast cancer patients.

PMID: 

Complement Ther Med. 2019 Dec ;47:102205. Epub 2019 Oct 3. PMID: 31780017

Abstract Title: 

Nigella sativa L. for prevention of acute radiation dermatitis in breast cancer: A randomized, double-blind, placebo-controlled, clinical trial.

Abstract: 

OBJECTIVE: The present study aimed to evaluate the effectiveness of Nigella sativa L. (N. sativa) extract on preventing the incidence of acute radiation dermatitis (ARD) in breast cancer patients.METHODS: Sixty-two breast cancer patients undergoing radiotherapy (RT) were randomly assigned to receiveN. sativa 5% gel or placebo. Patients were instructed to apply the medications twice daily during RT period. The severity of ARD, the incidence of moist desquamation, worst experienced pain, and skin-related quality of life (SRQOL) scores were assessed weekly during RT.RESULTS: Patients who were treated with the N. sativa gel developed ARD significantly less frequently compared to those who used the placebo (p 

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Quercetin alleviated lipopolysaccharide-stimulated injury by up-regulating miR-124.

PMID: 

Biofactors. 2019 Dec 5. Epub 2019 Dec 5. PMID: 31804760

Abstract Title: 

Quercetin alleviates lipopolysaccharide-induced inflammatory responses by up-regulation miR-124 in human renal tubular epithelial cell line HK-2.

Abstract: 

Chronic kidney disease (CKD) is a persistent kidney structural and functional disorder. Quercetin is one of active extracted flavonoids and has protective effects. Therefore, we proposed to survey the effect of Quercetin on CKD. HK-2 cells were preprocessed by Quercetin and then irritated with lipopolysaccharide (LPS). CCK-8 assay and flow cytometry were utilized to test viability and apoptosis. ELISA assay was utilized to estimate the IL-6 and TNF-α secretion. Western blot was performed to examine the expression of apoptosis and inflammation-associated mediators. After that HK-2 cells were transfected by miR-124 inhibitor. And the above-mentioned parameters were reassessed. LPS stimulated apoptosis and declined viability in HK-2 cells. Additionally, LPS stimulated inflammatory responses. Meanwhile, Quercetin attenuated LPS-stimulated apoptosis, production of IL-6, and TNF-α in experimental cells. Subsequently, MyD88 and miR-124 expression was elevated by LPS and alleviated by Quercetin. Finally, Quercetin exerted its protective function through NF-κB pathway via up-regulating miR-124. Our data demonstrated that Quercetin reduced apoptosis and inflammation stimulated by LPS in HK-2 cells. Moreover, Quercetin alleviated LPS-stimulated injury by up-regulating miR-124.

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Quercetin could be more effective in inhibiting metastasis compared to resveratrol.

PMID: 

Nutr Cancer. 2019 Oct 9:1-12. Epub 2019 Oct 9. PMID: 31595775

Abstract Title: 

The Effect of Resveratrol and Quercetin on Epithelial-Mesenchymal Transition in Pancreatic Cancer Stem Cell.

Abstract: 

Resveratrol and quercetin are phytochemicals that are found in a variety of plants. The aim of this study was to investigate the effect of resveratrol and quercetin on epithelial-mesenchymal transition (EMT) of CD133+ and CD133- pancreatic cancer cells. Cancer stem cells (CD133+ cells) were obtained from the PANC-1 cells by the MiniMACS system. CD133+ and CD133- PANC-1 cells were treated with different concentrations (5, 10, 25, 50, and 100 µM) of resveratrol and quercetin. Cell growth and cytotoxicity were evaluated by MTT assay. Anticancer and anti-metastatic properties of resveratrol and quercetin were determined by immunocytochemistry using antibodies (ACTA-2, IL-1β, N-cadherin, TNF-α, and vimentin). The immunostaining intensity of CD133+ cells was stronger than CD133- cells. ACTA-2, IL-1β, and N-cadherin immunoreactivities were significantly decreased, whereas TNF-α and vimentin immunoreactivities significantly increased in quercetin-treated CD133+ cells. Moreover, N-cadherin and TNF-α immunoreactivities significantly decreased in resveratrol-treated CD133+ cells. The reduction in N-cadherin and ACTA-2 immunoreactivities was higher than the increase in vimentin immunoreactivity, quercetin could prevent EMT to a greater extent than resveratrol in pancreatic cancer stem cells because of the reduced expression ofN-cadherin. Quercetin could be more effective in inhibiting metastasis compared to resveratrol.

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Resveratrol attenuates malathion-induced liver damage by reducing oxidative stress.

PMID: 

J Lab Physicians. 2019 Jul-Sep;11(3):212-219. PMID: 31579256

Abstract Title: 

Resveratrol attenuates malathion-induced liver damage by reducing oxidative stress.

Abstract: 

BACKGROUND: Malathion is an organophosphate insecticide which disrupts the antioxidant system of the body. Resveratrol is a phytoestrogen and antioxidant of the red grape.AIM AND OBJECTIVE: This study was designed to evaluate the effects of resveratrol against toxic effects of malathion to the liver of rats.MATERIALS AND METHODS: In this study, 48 male rats were randomly assigned to 8 groups: control normal (saline) and malathion control-treated groups (50 mg/kg), resveratrol groups (2, 8, and 20 mg/kg), and malathion + resveratrol-treated groups (2, 8, and 20 mg/kg). Treatments were administered intraperitoneally daily for 14 days. Griess technique was assessed for determined serum nitrite oxide level. Aspartate aminotransferase, alanine aminotransferase, and alkaline phosphatase concentrations were determined for liver functional disturbances. In addition, thiobarbituric acid reactive species, antioxidant capacity, the diameter of hepatocytes, and the central hepatic vein (CHV) were investigated.RESULTS: Malathion administration significantly improved liver malondialdehyde (MDA) and nitrite oxide level, the mean diameter of CHV and hepatocyte, and liver enzymes and decreased tissue ferric-reducing ability of plasma (FRAP) level compared to the normal control group (

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Neuroprotective effects of resveratrol in Alzheimer’s disease.

PMID: 

Front Biosci (Elite Ed). 2020 Jan 1 ;12:139-149. Epub 2020 Jan 1. PMID: 31585875

Abstract Title: 

Neuroprotective effects of resveratrol in Alzheimer's disease.

Abstract: 

Alzheimer's disease (AD) is a neurodegenerative disorder, which is commonly seen in older individuals. This is characterized by cognitive dysfunction, which leads to dementia. Pharmacological treatments for AD are mainly targeted on its symptoms like memory loss and cognitive impairment. The pathophysiology involved in AD is intra-neuronal accumulation of hyper-phosphorylated tau protein as neurofibrillary tangle and extra cellular beta amyloid plaque deposition, which is due to oxidative stress. Here we review the neuro-protective effects of Resveratrol (RSV) and its treatment efficacy in AD. RSV is a naturally available polyphenolic compound, which has antioxidant, anti-cancerous, anti-inflammatory and anti-aging properties. RSV crosses blood brain barrier and exerts its antioxidant effect by enhancing the anti-oxidant enzymes. RSV is involved in Sirtuin (SIRT1) mediated lifespan extension activity. RSV has reduced glial activation and helped in increasing the hippocampal neurogenesis. RSV was able to decrease the expression of amyloid precursor protein, along with improvement of spatial working memory. Since RSV acts as an antioxidant, it can be safely used as oral drug.

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Resveratrol reverts streptozotocin-induced diabetic nephropathy.

PMID: 

Front Biosci (Landmark Ed). 2020 Jan 1 ;25:699-709. Epub 2020 Jan 1. PMID: 31585912

Abstract Title: 

Resveratrol reverts Streptozotocin-induced diabetic nephropathy.

Abstract: 

Diabetes causes diabetic nephropathy (DN) which is associated with increased morbidity and mortality in diabetic patients. We tested whether Resveratrol (Res) reverses the systemic effect of Streptozotocin (STZ) induced diabetes and DN. Res treatment opposed the effect of STZ on kidney weight, 24 h urinary albumin excretion, blood urea nitrogen (BUN) and serum creatinine (Scr). Res also decreased DN induced mTOR/ULK1-mediated autophagy and apoptosis and significantly reduced STZ mediated lipid deposition in nephrons, likely by decreasing the levels of lipogenic related proteins (SREBP-1c, ACS) and increased lipidolysis related proteins (PPARα, CPT-1). Together, these findings show the potential of Res in prevention of diabetic nephropathy.

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Resveratrol decreases ischemia/reperfusion-induced neuronal apoptosis.

PMID: 

Exp Ther Med. 2019 Nov ;18(5):3397-3404. Epub 2019 Aug 26. PMID: 31602214

Abstract Title: 

Resveratrol ameliorates brain injury via the TGF-β-mediated ERK signaling pathway in a rat model of cerebral hemorrhage.

Abstract: 

Brain injury is the most common intracranial injury in human cerebrovascular disease, which may lead to ischemic stroke. Resveratrol induces ameliorative effects in the treatment of certain human diseases by regulating different signaling pathways. The present study assessed the therapeutic effects of resveratrol and its potential mechanism of action in the neurons from rats with ischemia/reperfusion-induced cerebral hemorrhage. The rat model of cerebral hemorrhage was established and reverse transcription-quantitative polymerase chain reaction, western blotting, immunohistochemistry and terminal deoxynucleotidyl-transferase-mediated dUTP nick end labeling assays were subsequently performed to assess the therapeutic effects of resveratrol. The results demonstrated that treatment with resveratrol (10 mg/kg/day) decreased cerebral water content, hippocampal cell apoptosis and cerebral infarct volume compared with the PBS-treated group. Resveratrol treatment also increased neuronal cell viability, improved neurological function and blood brain barrier disruption compared with the PBS group following 21 days of treatment. The administration of resveratrol was demonstrated to decrease the levels of certain inflammatory factors, including ionized calcium binding adaptor molecule 1 and myeloperoxidase, in rats with cerebral hemorrhage. The results revealed that treatment with resveratrol regulated neuronal apoptosis by downregulating the transforming growth factor-β (TGF-β)-mediated extracellular signal-regulated kinase (ERK) signaling pathway. In conclusion, these results indicate that resveratrol decreases ischemia/reperfusion-induced neuronal apoptosis by downregulating the TGF-β-mediated ERK pathway in a rat model of cerebral hemorrhage and may serve as a potential agent for the treatment of cerebral hemorrhage.

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