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Total 20 results found since Jan 2013.

Understanding HAT1: A Comprehensive Review of Noncanonical Roles and Connection with Disease
Genes (Basel). 2023 Apr 14;14(4):915. doi: 10.3390/genes14040915.ABSTRACTHistone acetylation plays a vital role in organizing chromatin, regulating gene expression and controlling the cell cycle. The first histone acetyltransferase to be identified was histone acetyltransferase 1 (HAT1), but it remains one of the least understood acetyltransferases. HAT1 catalyzes the acetylation of newly synthesized H4 and, to a lesser extent, H2A in the cytoplasm. However, 20 min after assembly, histones lose acetylation marks. Moreover, new noncanonical functions have been described for HAT1, revealing its complexity and complicating th...
Source: Atherosclerosis - April 28, 2023 Category: Cardiology Authors: Miguel A Ortega Diego De Leon-Oliva Cielo Garcia-Montero Oscar Fraile-Martinez Diego Liviu Boaru Mar ía Del Val Toledo Lobo Ignacio Garc ía-Tuñón Mar Royuela Natalio Garc ía-Honduvilla Julia Bujan Luis G Guijarro Melchor Alvarez-Mon Miguel Ángel Alv Source Type: research

Genes, Vol. 14, Pages 915: Understanding HAT1: A Comprehensive Review of Noncanonical Roles and Connection with Disease
-Mon Miguel Ángel Alvarez-Mon Histone acetylation plays a vital role in organizing chromatin, regulating gene expression and controlling the cell cycle. The first histone acetyltransferase to be identified was histone acetyltransferase 1 (HAT1), but it remains one of the least understood acetyltransferases. HAT1 catalyzes the acetylation of newly synthesized H4 and, to a lesser extent, H2A in the cytoplasm. However, 20 min after assembly, histones lose acetylation marks. Moreover, new noncanonical functions have been described for HAT1, revealing its complexity and complicating the understanding of its functions. Re...
Source: Genes - April 14, 2023 Category: Genetics & Stem Cells Authors: Miguel A. Ortega Diego De Leon-Oliva Cielo Garcia-Montero Oscar Fraile-Martinez Diego Liviu Boaru Mar ía del Val Toledo Lobo Ignacio Garc ía-Tuñón Mar Royuela Natalio Garc ía-Honduvilla Julia Bujan Luis G. Guijarro Melchor Alvarez-Mon Miguel Ángel A Tags: Review Source Type: research

PHLDA1 knockdown alleviates mitochondrial dysfunction and endoplasmic reticulum stress-induced neuronal apoptosis via activating PPAR γ in cerebral ischemia-reperfusion injury
Brain Res Bull. 2023 Jan 18;194:23-34. doi: 10.1016/j.brainresbull.2023.01.007. Online ahead of print.ABSTRACTMitochondrial dysfunction and endoplasmic reticulum (ER) stress occur in ischemic stroke. The disruption of these two organelles can directly lead to cell death through various signaling pathways. Thus, investigation of the associated molecular mechanisms in cerebral ischemia is a prerequisite for stroke treatment. Pleckstrin homology-like domain family A member 1 (PHLDA1) is a multifunctional protein that can modulate mitochondrial function and ER stress in cardiomyocyte and cancer cells. This work studied the rol...
Source: Brain Research Bulletin - January 21, 2023 Category: Neurology Authors: Yushuang Liu Hanshu Zhao Nan Chen Yuelong Li Zeyang Zheng Zhiyu Sun Zhongling Zhang Source Type: research

Arterial Thrombotic Complications of Tyrosine Kinase Inhibitors.
Abstract Abnormal expression or function of several classes of kinases contribute to the development of many types of solid and hematologic malignancies. TKs (tyrosine kinases) in particular play a role in tumor growth, metastasis, neovascularization, suppression of immune surveillance, and drug resistance. TKIs (tyrosine kinase inhibitors) targeted to TKs such as BCR-ABL1, VEGF receptors, PDGF receptors, have transformed therapy of certain forms of cancer by providing excellent efficacy with relatively low adverse event rates. Yet some of these agents have been associated with high rates of vascular events, presu...
Source: Arteriosclerosis, Thrombosis and Vascular Biology - December 4, 2020 Category: Cardiology Authors: Wu MD, Moslehi JJ, Lindner JR Tags: Arterioscler Thromb Vasc Biol Source Type: research

Clinacanthus nutans Mitigates Neuronal Death and Reduces Ischemic Brain Injury: Role of NF- κB-driven IL-1β Transcription
AbstractNeuroinflammation has been shown to exacerbate ischemic brain injury, and is considered as a prime target for the development of stroke therapies.Clinacanthus nutans Lindau (C. nutans) is widely used in traditional medicine for treating insect bites, viral infection and cancer, due largely to its anti-oxidative and anti-inflammatory properties. Recently, we reported that an ethanol extract from the leaf ofC. nutans could protect the brain against ischemia-triggered neuronal death and infarction. In order to further understand the molecular mechanism(s) for its beneficial effects, two experimental paradigms, namely,...
Source: NeuroMolecular Medicine - October 5, 2020 Category: Neurology Source Type: research

Orally Administered Crocin Protects Against Cerebral Ischemia/Reperfusion Injury Through the Metabolic Transformation of Crocetin by Gut Microbiota
Conclusion Collectively, pharmacokinetic and pharmacodynamic association studies provide evidence that the gut microbiota plays a vital role in the fate of crocin and crocetin in the gastrointestinal tract. In addition, the cross-interaction between gut microbiota and crocin might mediate the activation of the cerebral-protective effect of orally administered crocin. Ethics Statement This study was carried out in accordance with the recommendations of ‘Institutional Animal Research Committee guidelines, Animal Ethics Committee of China Pharmaceutical University.’ The protocol was approved by the ‘An...
Source: Frontiers in Pharmacology - April 29, 2019 Category: Drugs & Pharmacology Source Type: research

Stroke Dysbiosis Index (SDI) in Gut Microbiome Are Associated With Brain Injury and Prognosis of Stroke
Conclusions: We developed an index to measure gut microbiota dysbiosis in stroke patients; this index was significantly correlated with patients' outcome and was causally related to outcome in a mouse model of stroke. Our model facilitates the potential clinical application of gut microbiota data in stroke and adds quantitative evidence linking the gut microbiota to stroke. Introduction Ischemic stroke imposes a heavy burden on society, with 24.9 million cases worldwide (1). Although intravenous thrombolysis and endovascular treatment greatly improve some patients' prognosis, the prognosis for most pa...
Source: Frontiers in Neurology - April 23, 2019 Category: Neurology Source Type: research

New Biomarkers for Atherothrombosis in Antiphospholipid Syndrome: Genomics and Epigenetics Approaches
Conclusions In recent years, there have been many advances in the understanding of the molecular basis for vascular involvement in APS, but many areas need to be further investigated, in particular the association between altered genetic/epigenetic profiles, autoantibodies and clinical manifestations, and the effectiveness of new therapeutic strategies. It would be interesting to apply next generation sequencing technologies like RNA-Seq along with GWAS to screen both, the gene profile and the whole transcriptome of large cohorts of primary APS patients, in order to reveal the mutations/polymorphisms, post-transcriptiona...
Source: Frontiers in Immunology - April 15, 2019 Category: Allergy & Immunology Source Type: research

Plant-Derived Alkaloids: The Promising Disease-Modifying Agents for Inflammatory Bowel Disease
Conclusion This paper summarizes the current findings regarding the anti-colitis activity of plant-derived alkaloids and shows how these alkaloids exhibit significant and beneficial effects in alleviating colonic inflammation. These natural alkaloids are not only promising agents for IBD treatment but are also components for developing new wonder drugs. However, the underlying molecular mechanisms or toxicological evaluation of most plant-derived alkaloids still require much scientific research, and their actual efficacies for IBD patients have not been verified well in field research. Thus, further clinical trials to elu...
Source: Frontiers in Pharmacology - April 11, 2019 Category: Drugs & Pharmacology Source Type: research

Nrf2 as a Potential Mediator of Cardiovascular Risk in Metabolic Diseases
Conclusion Activation of the Nrf2-dependent antioxidant system plays an important role in cell defense against oxidative stress damage, whereas the insufficiency of the Nrf2 system is associated with multiple aspects of the genesis and progression of metabolic diseases, posing a great risk to the cardiovascular system (Figure 1). The systemic increase of Nrf2 activity by several activators may be beneficial in the treatment of metabolic diseases. In addition, selective upregulation of Nrf2 genes may represent a potential therapy in obesity, diabetes and atherosclerosis. Looking to the future, experimental research that el...
Source: Frontiers in Pharmacology - April 11, 2019 Category: Drugs & Pharmacology Source Type: research

Orexin-A Prevents Lipopolysaccharide-Induced Neuroinflammation at the Level of the Intestinal Barrier
We examined a possible protective effect of OX-A against LPS-induced ROS formation and microglia activation. To mimic in vitro the connection between gut and brain and to study the putative effect on the cortical microglia, we used a co-culture of Caco-2 cells and primary cortical microglia with Caco-2 cells placed at the apical side of a transwell and primary cortical microglia at the basolateral side. All treatments used to study the apical vs. basal connection were applied to the apical compartment. We used DHR (10 μM, 20 min), a cell-permeable fluorogenic probe useful for the detection of ROS formation, to dete...
Source: Frontiers in Endocrinology - April 9, 2019 Category: Endocrinology Source Type: research