Quang Ta - Academia.edu (original) (raw)

Papers by Quang Ta

Cardiovascular disease (CVD) is often referred to several different diseases and disorders of the... more Cardiovascular disease (CVD) is often referred to several different diseases and disorders of the heart and blood vessels that constitute cardiovascular or heart disease. CVD is one of the leading causes of death worldwide. Atherosclerosis is the most common pathological process leading to CVD, a disease of medium to large arteries that majorly causes heart attacks and strokes. The pathogenesis of atherosclerosis lesion is a very complex process that is associated with thickening of the intima layer, weakening of underlying intima. Many components of the vascular, metabolic, and immune systems are involved in this process. These lesions have been presented even in teenagers and young adults and although not clinically signiﬁcant at this stage, these lesions possess the potential to develop into clinically relevant lesions later on in over decades of life. This article will give an overview relationship between atherosclerosis and cardiovascular disease.

TTU Review, 2021

Breast cancer is one of the most leading causes of death in females all over the world. Although,... more Breast cancer is one of the most leading causes of death in females all over the world. Although, the incidence rate of breast cancer is low, the death proportion is relatively high. For breast cancer patients, the recurrence ratio is rare, yet it still happens. The highest risk of recurrence usually happens at the early time of treatment, and its severeness depends on the diagnosed stage and the size of the tumor. However, the recurrence prognostic of breast cancer still limited due to the poor prediction strength of input data. Therefore, in this study we used four independent data sets (n = 793) with the same chipsets (HG-U133A) of breast cancer patients to investigate a 67 gene signature used in further building the prognostic model for breast cancer patients. Our results ﬁnally conﬁrmed that a 67 gene set was signiﬁcantly associated with the recurrence (RFS) (p = 1.66e−17), and overall survival (OS) (p = 9.27e−06). Besides, the gene signature also correlated with survival outco...

C107. STEM AND PROGENITOR CELLS: RETENTION, REGENERATION AND REGULATION OF INFLAMMATION, 2010

C107 STEM AND PROGENITOR CELLS: RETENTION, REGENERATION AND REGULATION OF INFLAMMATION Discussion... more C107 STEM AND PROGENITOR CELLS: RETENTION, REGENERATION AND REGULATION OF INFLAMMATION Discussion Session / Tuesday, May 18/1:30 PM-4:00 PM / Room 225-227 (Second Level), Morial Convention Center ... Effects Of Conditioned Media Of ...

Marine Medicinal Foods - Implications and Applications - Animals and Microbes, 2012

Bioactive agents from marine resources have shown their valuable health beneficial effects. There... more Bioactive agents from marine resources have shown their valuable health beneficial effects. Therefore, increase knowledge on novel functional ingredients with biological activities from marine animal and microbe has gained much attention. Sterols are recognized as potential in development functional food ingredients and pharmaceutical agents. Marine resources, with a great diversity, can be a very interesting natural resource of sterols. This chapter focuses on biological activities of marine animal and microbe sterols with potential health beneficial applications in functional foods and pharmaceuticals.

Marine Medicinal Foods - Implications and Applications, Macro and Microalgae, 2011

The importance of bioactive derivatives as functional ingredients has been well recognized due to... more The importance of bioactive derivatives as functional ingredients has been well recognized due to their valuable health beneficial effects. Therefore, isolation and characterization of novel functional ingredients with biological activities from marine algae have gained much attention. Sterols are important structural component of cell membranes. It has been reported that plant sterols exhibit various beneficial biological activities such as hypercholesterolemic, antioxidant, anticancer, antidiabetic, antihypertensive, anti-inflammatory, antifungal, and antibacterial activities. Marine algae with a great diversity can be a very interesting natural resource of sterols. This chapter focuses on biological activities of marine algae derived sterols with potential health beneficial applications in functional foods and pharmaceuticals.

Food Science and Biotechnology, 2015

Blue mussel (Mytilus edulis) is a popular shellfish that is used widely in the daily diet. It has... more Blue mussel (Mytilus edulis) is a popular shellfish that is used widely in the daily diet. It has antioxidant, antimicrobial, and anticoagulant properties. The hypnotic effects of blue mussel (ME) water extracts in a mouse model were investigated. Oral administration of ME water extracts produced a dose-dependent decrease in sleep latency and an increase in sleep duration in pentobarbitaltreated mice. At concentrations of 500 and 1,000 mg/kg, the extracts also increased the sleep onset rate (90 and 90%, respectively) and sleep duration (46.3±4.9 and 58.3±2.0 min, respectively) in sub-hypnotic dosage testing. Electroencephalograms (EEG) and electromyograms (EMG) showed that ME water extracts reduced sleep latency and induced non-rapid eye movement sleep (NREMS) while maintaining rapid eye movement sleep (REMS). ME water extracts did not affect the EEG power density. ME water extract-induced sleep is similar to physiological sleep in a mouse model.

Microbiological Research, 2014

Marine Biotechnology, 2006

This study investigated the intervention effects of chitooligosaccharides (COS) on retinol metabo... more This study investigated the intervention effects of chitooligosaccharides (COS) on retinol metabolism and included comparisons of the retinol level, retinol binding protein 4 (RBP4) content, key genes, and protein expression between mice on a COS-enriched diet and a normal diet. The results showed that COS markedly decreased the retinol and RBP4 concentrations in the serum and liver. Furthermore, COS suppressed the mRNA and protein expression of RBP4, cellular retinol binding protein 1 (CRBP1), lecithin: retinol acyltransferase (LRAT) and cytochrome P45026A1 (CYP26A1). In addition, COS inhibited the mRNA expression of stimulated by retinoic acid 6 (STRA6). However, the protein expression of STRA6 was not significantly decreased. Thus, COS reduced the retinol concentration in the serum and disrupted the metabolism of retinol. The intervention mechanism of COS on retinol metabolism may be attributed to the modulation of RBP4, CRBP1, LRAT, STRA6, and CYP26A1 expression at the mRNA and protein levels. Practical applications Chitooligosaccharides (COS), known to be the degradation products of chitosan, have been found to induce pinkeye in industrial workers who participate in the manufacturing of COS. Meanwhile, 5% population with COS dietary supplement also have similar phenomenon. The aim of this study is to explore the possible mechanism underlay of this potential risk. The results of this study showed that high exposure to COS during manufacture influences retinol metabolism and leads to a decrease in retinol content, ultimately causing pinkeye. These findings provide new evidence for understanding COS-induced retinol metabolism alteration and drawing attention toward the prevention of potential risk in high-exposure populations.

Food Research International, 2011

Recently, a great deal of interest has been developed by the consumers towards natural bioactive ... more Recently, a great deal of interest has been developed by the consumers towards natural bioactive compounds as functional ingredients in the food products due to their various health beneficial effects. Hence, it can be suggested that antioxidative functional ingredients from marine foods and their by-products are alternative sources for synthetic ingredients that can contribute to a consumer's well-being, as a part of nutraceuticals and functional foods. This contribution presents an overview of the marine food-derived antioxidants such as bioactive peptides, chitooligosaccharide derivatives, sulfated polysaccharides, phlorotannins and carotenoids with the potential utilization in the food industry.

Experimental and Molecular Medicine, 2009

Matrix metalloproteinase-9 (MMP-9) secreted from macrophages plays an important role in tissue de... more Matrix metalloproteinase-9 (MMP-9) secreted from macrophages plays an important role in tissue destruction and inflammation through degradation of matrix proteins and proteolytic activation of cytokines/chemokines. Whereas the MEK-ERK and PI3K-Akt pathways up-regulate MMP-9 expression, regulation of MMP-9 by JNK remains controversial. Presently, we aimed to determine the role of JNK in MMP-9 regulation in Raw 264.7 cells. Inhibition of JNK by the JNK inhibitor SP600125 induced MMP-9 in the absence of serum and suppressed the expression of TNF-α, IL-6 and cyclooxygenase-2 in LPS-treated Raw 264.7 cells. In a knockdown experiment with small interfering RNA, suppression of JNK1 induced MMP-9 expression. Interestingly, mouse serum suppressed SP600125mediated MMP-9 induction, similar to IFN-γ. However, the inhibitory activity of mouse serum was not affected by pyridone 6, which inhibits Janus kinase downstream to IFN-γ. In addition to mouse serum, conditioned media of Raw 264.7 cells contained the inhibitory factor(s) larger than 10 kDa, which suppressed SP600125-or LPS-induced MMP-9 expression. Taken together, these data suggest that JNK1 suppresses MMP-9 expression in the absence of serum. In addition, the inhibitory factor(s) present in serum or secreted from macrophages may negatively control MMP-9 expression.

European Journal of Pharmaceutical Sciences, 2011

Herpes simplex virus (HSV) is a member of the Herpesviridae family that causes general communicab... more Herpes simplex virus (HSV) is a member of the Herpesviridae family that causes general communicable infections in human populations throughout the world, the most common being genital and orolabial disease. The current treatments for HSV infections are nucleoside analogs such as acyclovir, valacyclovir and famciclovir. Despite the safety and efficacy, extensive clinical use of these drugs has led to the emergence of resistant viral strains, mainly in immunocompromised patients. To counteract these problems, alternative anti-HSV agents from natural products have been reported. Recently, a great deal of interest has been expressed regarding marine organisms such as algae, sponges, tunicates, echinoderms, mollusks, shrimp, bacteria, and fungus as promising anti-HSV agents. This contribution presents an overview of potential anti-HSV agents derived from marine organisms and their promising application in HSV therapy.

Cellular Immunology, 2012

Chitin oligosaccharides (NA-COS) of two different molecular weight ranges (below 1 and 1-3 kDa) w... more Chitin oligosaccharides (NA-COS) of two different molecular weight ranges (below 1 and 1-3 kDa) were examined for their capabilities against lipopolysaccharide-induced inflammatory responses in BV-2 murine microglia. It was found that NA-COS reduced the level of nitric oxide (NO) and prostaglandin E(2) (PGE(2)) production by suppressing the expression of NO synthase (iNOS) and cyclooxygenase (COX)-2 without significant cytotoxicity. Furthermore, the inhibitory effects of NA-COS on generation of interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α were determined. Notably, NA-COS exerted anti-inflammatory activities via blocking degradation of inhibitor of kappaB-alpha (IκB-α), translocation of nuclear factor (NF)-κB, and phosphorylation of mitogen-activated protein kinases (MAPKs) in a dose-dependent manner. These findings provide mechanistic insights into the anti-inflammatory and neuroprotective actions of NA-COS in BV-2 microglia.

Carbohydrate Polymers, 2012

The aim of this study was to investigate the antioxidant and anti-inflammatory activities of amin... more The aim of this study was to investigate the antioxidant and anti-inflammatory activities of aminoethylchitooligosaccharides (AE-COS) in murine microglial cells (BV-2). At the high concentration of 100 g/ml, the inhibition of reactive oxygen species, DNA, protein and lipid oxidation were determined in BV-2 cells, at the rates of 77%, 80%, 85% and 85%, respectively. Furthermore, AE-COS was studied for its capabilities against lipopolysaccharide-induced inflammatory responses in BV-2 cells. It was found that AE-COS reduced the level of nitric oxide (NO) and prostaglandin E 2 production by diminishing the expression of inducible NO synthase and cyclooxygenase-2 without significant cytotoxicity. Moreover, the inhibitory activities of AE-COS on generation of tumor necrosis factor-alpha and interleukin-1beta were performed. Collectively, these results indicate that AE-COS possess potential antioxidant and antiinflammatory activities in brain microglia, and could be a useful therapeutic agent for the treatment of neuroinflammatory diseases.

American Journal of Physiology-Lung Cellular and Molecular Physiology, 2011

The therapeutic potential of stem cells in chronic obstructive pulmonary disease is not well know... more The therapeutic potential of stem cells in chronic obstructive pulmonary disease is not well known although stem cell therapy is effective in models of other pulmonary diseases. We tested the capacities of bone marrow cells (BMCs), mesenchymal stem cells (MSCs), and conditioned media of MSCs (MSC-CM) to repair cigarette smoke-induced emphysema. Inbred female Lewis rats were exposed to cigarette smoke for 6 mo and then received BMCs, MSCs, or MSC-CM from male Lewis rats. For 2 mo after injection, the BMC treatment gradually alleviated the cigarette smoke-induced emphysema and restored the increased mean linear intercept. The BMC treatment significantly increased cell proliferation and the number of small pulmonary vessels, reduced apoptotic cell death, attenuated the mean pulmonary arterial pressure, and inhibited muscularization in small pulmonary vessels. However, only a few male donor cells were detected from 1 day to 1 mo after BMC administration. The MSCs and cell-free MSC-CM al...

PLOS ONE, 2019

Catecholamine excess reflecting an adrenergic overdrive of the sympathetic nervous system (SNS) h... more Catecholamine excess reflecting an adrenergic overdrive of the sympathetic nervous system (SNS) has been proposed to link to hyperleptinemia in obesity and may contribute to the development of metabolic disorders. However, relationship between the catecholamine level and plasma leptin in obesity has not yet been investigated. Moreover, whether pharmacological blockade of the adrenergic overdrive in obesity by the third-generation betablocker agents such as carvedilol could help to prevent metabolic disorders is controversial and remains to be determined. Using the high fat diet (HFD)-induced obese mouse model, we found that basal plasma norepinephrine, the principal catecholamine as an index of SNS activity, was persistently elevated and highly correlated with plasma leptin concentration during obesity development. Targeting the adrenergic overdrive from this chronic norepinephrine excess in HFD-induced obesity with carvedilol, a third-generation beta-blocker with vasodilating action, blunted the HFD-induced hepatic glucose overproduction by suppressing the induction of gluconeogenic enzymes, and enhanced the muscular insulin signaling pathway. Furthermore, carvedilol treatment in HFD-induced obese mice decreased the enlargement of white adipose tissue and improved the glucose tolerance and insulin sensitivity without affecting body weight and blood glucose levels. Our results suggested that catecholamine excess in obesity might directly link to the hyperleptinemic condition and the therapeutic targeting of chronic adrenergic overdrive in obesity with carvedilol might be helpful to attenuate obesity-related metabolic disorders.