Publications by authors named "Subramaniyam Nithyananthan"

Article Synopsis
  • High-mobility group box-1 (HMGB1) levels rise and undergo post-translational modifications (PTMs) with alcohol consumption, potentially influencing the development of alcohol-associated liver disease (AALD).
  • Researchers used a specific model of liver injury caused by alcohol to explore how manipulating HMGB1's expression and modifications in liver cells and immune cells impacts AALD.
  • Their findings show that different forms of HMGB1 have contrasting effects: oxidized HMGB1 (O) worsens liver injury while acetylated HMGB1 (Ac) can protect against these harmful effects, highlighting the importance of targeting O HMGB1 in treating AALD.
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Background: Previously, we demonstrated that Spp1 mice exhibit a greater susceptibility to alcohol-induced liver injury than wild-type (WT) mice. Notably, alcohol triggers the expression of osteopontin (encoded by SPP1) in hepatocytes. However, the specific role of hepatocyte-derived SPP1 in either mitigating or exacerbating alcohol-associated liver disease (AALD) has yet to be elucidated.

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Tumor microenvironment has significant influence in therapeutic response and clinical outcome. Combination therapy is more effective in cancer treatment compared with monotherapy. Any chemical or drug that targets tumor microenvironment pathway, will be a boon to combination cancer chemotherapy.

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Augmenter of liver regeneration (ALR), a ubiquitous fundamental life protein, is expressed more abundantly in the liver than other organs. Expression of ALR is highest in hepatocytes, which also constitutively secrete it. ALR gene transcription is regulated by NRF2, FOXA2, SP1, HNF4α, EGR-1 and AP1/AP4.

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The prevalence of nonalcoholic fatty liver is increasing due to modern lifestyle. Germinated and dehulled Macrotyloma uniflorum and Vigna radiate were shown to have enhanced nutrients. Curcuma longa and Trigonella foenum graecum were proven hepatoprotective.

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Among various food processing strategies, germination and dehulling enhance the nutritional content of the food, and the addition of herbs to this could improve the medicinal value. The milled powders of germinated Macrotyloma uniflorum (horse gram) and Vigna radiata (green gram) were used to make the nutrient mixture. Further, Curcuma longa (turmeric) and Trigonella foenum graecum (fenugreek) were used to improve its medicinal value.

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The extensive regeneration potential of the liver makes use of hepatic re-sectioning and split liver transplantation for treating advanced liver diseases. Heavy metals such as cisplatin, carboplatin, and arsenic trioxide (ATO) are being practiced as chemotherapeutic agents for different cancers. Further, research is progressed on using different heavy metal nano-particles as a drug, drug carrier and diseases detective agent.

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After withdrawal of liver toxic insult, the spontaneous regenerative potential of the liver is well reported in the literature. On the other hand, various molecules have been reported to promote as well as delay such natural regeneration. This current study investigates the involvement of arsenic trioxide (ATO) medication at chemotherapeutic dose on the spontaneous regeneration of the CCl induced fibrotic liver.

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Article Synopsis
  • The study investigates the role of Augmenter of liver regeneration (ALR) and microRNA-26a in liver cell proliferation, specifically using the Huh7 cell line and mesenchymal stem cells from patients with chronic liver disease and healthy individuals.
  • Findings indicate that overexpression of ALR or miRNA-26a enhances cell proliferation by activating the Akt signaling pathway and cyclin D1, while inhibiting ALR or miRNA-26a reduces this proliferation.
  • The research concludes that ALR boosts miRNA-26a expression, which in turn suppresses phosphatase and tensin homolog, promoting cell proliferation through the Akt/cyclin D1 pathway in liver cells.
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Drug repurposing has been an emerging therapeutic strategy, which involves exploration of a new therapeutic approach for the use of an existing drug. Glibenclamide (Gli) is an anti-diabetic sulfonylurea drug extensively used for the treatment of type-2 diabetes, it has also been shown to possess anti-proliferative effect against several types of tumors. The present study was executed to understand the mechanisms underlying the interaction of Gli with DNA under physiological conditions.

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Therapeutic applications of arsenic trioxide (ATO) are limited due to their severe adverse effects. However, nanoparticles of ATO might possess inimitable biologic effects based on their structure and size which differ from their parent molecules. Based on this conception, AsNPs were synthesized from ATO and comparatively analysed for their interaction mechanism with DNA using spectroscopic & electrochemical techniques.

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Troxerutin (TXER) a rutin derivative is known for its anticancer effect against hepatocellular carcinoma (HCC). As part of large study, recently we have shown TXER interact with genetic material and its anti-mutagenic property. In the present study we have explored its possible mode of action in HCC.

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