Publications by authors named "Saiwang Seto"

Background: Sclerostin (SOST) is traditionally regarded as an osteocyte-derived secreted glycoprotein that regulates bone mineralization. Recent studies reported that SOST is also released from non-skeletal sources, especially during inflammation. However, the cellular source and regulatory mechanisms governing SOST generation in inflammation remain unclear.

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Background: Angiogenesis of brain microvascular endothelial cells (BMECs) after cerebral ischemia was conducive to improving the blood supply of ischemia tissues, which was upregulated by glycolysis. Hydroxysafflor Yellow A (HSYA) mends damaged tissues through increasing angiogenesis.

Methods: HSYA treated proliferation, migration and angiogenesis of BMECs in vitro in vitro during OGD/R.

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Article Synopsis
  • Mangrove ecosystems are facing threats from climate change and urban pollution, leading to the emergence of potentially harmful yeasts, as studied in Hong Kong's mangroves.
  • The researchers collected water and sediment samples, identifying 45 yeast isolates from 18 species, with a significant presence of pathogenic yeasts known for drug resistance.
  • The study highlights the urgent need for surveillance and collaboration among various disciplines to manage the risks posed by these pathogens, emphasizing the broader public health implications of unchecked urban development in coastal areas.
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Alcoholic beverages are among the most widely enjoyed leisure drinks around the world. However, irresponsible drinking habits can have detrimental effects on human health. Therefore, exploring strategies to alleviate discomfort following alcohol consumption would be beneficial for individuals who inevitably need to consume alcohol.

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Background: Instead of completely suppressing blood vessels inside tumors, vascular normalization therapy is proposed to normalize and prune the abnormal vasculature in tumor microenvironment (TME) to acquire a normal and stable blood flow and perfusion. The theoretical basis for the use of "blood-activating and stasis-resolving" formulas in Traditional Chinese Medicine to treat cancer is highly consistent with the principle of vascular normalization therapy, suggesting the potential application of these traditional formulas in vascular normalization therapy.

Purpose: To study the underlying mechanisms of a classical "blood-activating and stasis-resolving" formula, Taohong Siwu decoction (TSD), in enhancing the efficacy of chemotherapy for breast cancer treatment.

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Introduction: is a Gram-negative, rod-shaped bacterium belonging to the family of , a common pathogen in aquaculture animals, However, studies on its impact on (mud crabs) are limited. In this study, we isolated SWS from dead mud crab during a disease outbreak in a Hong Kong aquaculture farm, which caused up to 70% mortality during summer.

Methods: Experimental infection and histopathology were used to investigate the pathogenicity of SWS in and validate Koch's postulates.

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Background: Amauroderma rugosum (AR) is a medicinal mushroom commonly used to treat inflammation, gastric disorders, epilepsy, and cancers due to its remarkable anti-inflammatory and anti-oxidative properties. This study was designed to evaluate the pharmacological effects of AR and its underlying mechanism of action against ulcerative colitis (UC) in vitro and in vivo.

Methods: A UC mouse model was established by administration of dextran sulfate sodium (DSS).

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Amauroderma rugosum (AR), also known as "Blood Lingzhi" in Chinese, is a basidiomycete belonging to the Ganodermataceae family. Four polysaccharide fractions were systematically isolated and purified from AR. Subsequently, their compositions were examined and analyzed via high-performance gel permeation chromatography (HPGPC), analysis of the monosaccharide composition, Fourier-transform infrared spectroscopy (FT-IR), and H nuclear magnetic resonance (NMR).

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AGS-30, a new andrographolide derivative, showed significant anticancer and anti-angiogenic characteristics. However, its role in controlling macrophage polarization and tumor immune response is unknown. Thus, the main goals of this study are to investigate how AGS-30 regulates macrophage polarization and how it suppresses breast cancer metastasis.

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Despite the acknowledged advantages of combined immunochemotherapy for tumor treatment, the high efficiency of co-delivery of these combined agents into the targeted tumor tissue is still challenging. Herein, based on a "three-birds-with-one-stone" strategy, a facile glycyrrhizic acid (GL)-lipid hybrid nanoplatform loading triptolide (TP/GLLNP) is designed to better address the dilemma. Differing from the traditional liposomes with dual-drug co-delivery NPs, GL with a cholesterol-like structure is primarily employed to construct the lipid membrane skeleton of the GL-based lipid nanoparticle (GLLNP), and then triptolide (TP) is readily loaded in the lipid bilayer of GLLNP.

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Medulla Tetrapanacis (MT) is a commonly used herb to promote lactation and manage mastitis in lactating mothers. However, its anti-inflammatory and anti-bacterial effects are currently unknown. We hypothesized that MT water extract possesses anti-inflammatory and anti-bacterial effects by modulating macrophage polarization to reduce the release of inflammatory mediators and phagocytosis via inactivation of MAPKs pathways.

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Article Synopsis
  • Cancer metastasis is a major cause of death in breast cancer patients, and tumor-associated macrophages (TAMs) are being explored as a new treatment target.
  • The study investigates the anti-cancer effects of garcinone E (GE), revealing that it can reduce the proliferation and migration of breast cancer cells by inhibiting M2 macrophage activity.
  • In mouse models, GE was shown to significantly decrease tumor growth and lung metastasis while increasing M1-like TAMs and decreasing M2-like TAMs, indicating its potential as a therapeutic agent for metastatic breast cancer through the STAT6 signaling pathway.
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Ageing is a risk factor for many degenerative diseases. Cardiovascular diseases (CVDs) are usually big burdens for elderly, caregivers and the health system. During the aging process, normal functions of vascular cells and tissue progressively lost and eventually develop vascular diseases.

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  • Nucleoside transporters, especially ENT type 4, are key in regulating adenosine during ischemia in cardiomyocytes, and this study examines how ENT4's inhibition might protect these cells from injury during ischemia-reperfusion.
  • Using AC16 human cardiomyocytes, the research demonstrated that while ENT4 does not affect adenosine uptake under normal conditions, its inhibition reduces uptake by 28% in ischemic conditions and improves cell viability.
  • The findings suggest that targeting ENT4 could offer potential cardioprotection during ischemic events, but further research in animal models is needed to confirm these results.
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  • Activation of blood stasis is critical in stroke treatment, and the TQHXD formula is frequently used to address this, though its protective mechanisms against cerebral ischemia-reperfusion injury are not well understood.
  • The study aimed to identify the active components of TQHXD responsible for its protective effects and to explore their mechanisms against cerebral I/R injury using various biochemical analyses and databases.
  • Six active ingredients were identified, with several key targets found, including ASK1, showing a strong binding affinity in molecular docking studies, and TQHXD demonstrated neuroprotective effects in experimental stroke models, reducing damage compared to untreated controls.
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Ethnopharmacological Relevance: Tong-Qiao-Huo-Xue Decoction (TQHXD) is a traditional classic Chinese Medicinal Formula (CMF) used for clinical treatment of ischemic stroke. TQHXD leads to improvement in the symptoms of the acute period of cerebral infarction and recovery period after stroke. Our previous studies also showed that TQHXD produced a significant protective effect on the brain after cerebral ischemia-reperfusion (I/R) injury.

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Background: Mitophagy plays a critical role in cerebral ischemia/reperfusion by timely removal of dysfunctional mitochondria. In mammals, PINK1/Parkin is the most classic pathway mediating mitophagy. And the activation of PINK1/Parkin mediated mitophagy exerts neuroprotective effects during cerebral ischemia reperfusion injury (CIRI).

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Equilibrative nucleoside transporters (ENTs) play a vital role in nucleotide synthesis, regulation of adenosine function and chemotherapy. Current inhibitors of ENTs are mostly ENT1-selective. Our previous study has demonstrated that 4-((4-(2-fluorophenyl)piperazin-1-yl)methyl)-6-imino-N-(naphthalen-2-yl)-1,3,5-triazin-2-amine (FPMINT) is a novel inhibitor of ENTs, which is more selective to ENT2 than to ENT1.

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Background: Ischemic stroke is a major global cause of death and permanent disability. Studies have suggested that mitochondria play a critical role in maintaining cellular energy homeostasis and inevitably involved in neuronal damage during cerebral ischemic. Ligustilide is the main active ingredient of Angelica sinensis and Ligusticum chuanxiongs with neuroprotective activity.

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Objective: Angiogenesis led by brain microvascular endothelial cells (BMECs) contributes to the remission of brain injury after brain ischemia reperfusion. In this study, we investigated the effects of hydroxysafflor yellow A(HSYA) on angiogenesis of BMECs injured by OGD/R via SIRT1-HIF-1α-VEGFA signaling pathway.

Methods: The OGD/R model of BMECs was established in vitro by OGD for 2h and reoxygenation for 24h.

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Ethnopharmacological Relevance: Dan-Deng-Tong-Nao Capsules (DDTNC) is a Chinese patent medicine and has been used in treating cerebral ischemic stroke (IS) for a long time in China, protection of brain microvascular endothelial cells (BMECs) is the main treatment strategy. But the holistic chemical information and potential bioactive components of DDTNC on protecting BMECs and its underlying mechanism is still unclear.

Aim Of The Study: To identify the active ingredients of DDTNC and to explore the protective effects of DDTNC on BMECs associated with Wnt/β-catenin pathway.

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Article Synopsis
  • - Narirutin, a flavanone found in citrus fruits, was studied for its cardiovascular effects, focusing on its ability to relax rat mesenteric arteries and understanding the underlying mechanisms through isometric tension measurements and patch-clamping techniques.
  • - The study found that while narirutin did not affect acetylcholine-induced relaxation, it directly induced concentration-dependent relaxation in arteries, with effects similar to its analogue naringenin, and was influenced by factors like endothelium removal and specific inhibitors.
  • - Key mechanisms identified included increased phosphorylation of endothelial nitric oxide synthase, enhanced voltage-dependent potassium current, and inhibition of phosphodiesterase, which raised cAMP levels, suggesting narirutin promotes relaxation in blood vessels through multiple
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Background: Mitochondria are key cellular organelles that are essential for cell fate decisions. Hydroxysafflor yellow A (HSYA) has displayed an impressively essential role in protection of cerebral ischemia/reperfusion (I/R). However, the mitochondrial effect of HSYA on Brain Microvascular Endothelial Cells (BMECs) under I/R remains to be largely unclear.

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Forchlorfenuron (CPPU) has been used worldwide, to boost size and improve quality of various agricultural products. CPPU and its metabolites are persistent and have been detected frequently in fruits, water, sediments, and organisms in aquatic systems. Although the public became aware of CPPU through the exploding watermelon scandal of 2011 in Zhenjiang, China, little was known of its potential effects on the environment and wildlife.

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