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Total 81 results found since Jan 2013.

Identification of ligustrazine-based analogs of piperlongumine as potential anti-ischemic stroke agents
Fitoterapia. 2022 Dec 20:105398. doi: 10.1016/j.fitote.2022.105398. Online ahead of print.ABSTRACTPiper longum has a specific aroma and spicy taste. In addition to edible value, current studies have shown that piper longum also has pharmacological activities such as anti-platelet aggregation, anti-inflammation, anti-cancer, anti-diabetes and anti-depression. Piperlongumine is an alkaloid isolated from Piper longum. Based on our previous studies, four Piperlongumine analogs were synthesized, and their anti-platelet aggregation activities were evaluated. Among them, compound 8 has the strongest anti-platelet aggregation acti...
Source: Fitoterapia - December 23, 2022 Category: Biochemistry Authors: Tan Lijuan Cao Xiaolu Wan Xin He Yuying Lan Xi Yang Xiliang Wang Ting Min Zhenli Zou Yu Source Type: research

Long non-coding RNA CHRF modulates the progression of cerebral ischemia/reperfusion injury via miR-126/SOX6 signaling pathway.
In this study, we found that CHRF was significantly correlated with miR-126, and miR-126 expression was decreased in the ischemic core following ischemia, while CHRF expression was increased according to the in vivo and in vitro experiments. Additionally, miR-126 significantly reduced oxygen-glucose deprivation and reoxygenation (OGD/R)-triggered apoptosis using TUNEL and flow cytometry analysis. Moreover, CHRF played as a competing endogenous RNA (ceRNA) and competed with Sex-determining region Y box 6 (SOX6) to direct binding with miR-126, subsequently regulating ischemic neuronal death. CHRF knockdown in vivo markedl...
Source: Biochemical and Biophysical Research communications - May 2, 2019 Category: Biochemistry Authors: Gai HY, Wu C, Zhang Y, Wang D Tags: Biochem Biophys Res Commun Source Type: research

Altered plasma levels of apixaban in major gastrointestinal tract surgery: a case report and review of the literature
We describe a case of suspected altered apixaban disposition in a patient with an upper gastrointestinal cancer resection treated with apixaban for non-valvular atrial fibrillation. Diagnosis of ischemic stroke for left hemiparesis was confirmed due to recent emergence of a hypodense area in the posterior capsular nucleus of ischemic reference in a context of binuclear capsular lacunar lesions. Thus, apixaban underexposure was suspected from anamnestic data and oral anticoagulation was switched to parenteral at the next scheduled dose for stroke recurrence. Before switching apixaban pharmacokinetic analysis was performed a...
Source: Clinical Biochemistry - July 14, 2023 Category: Biochemistry Authors: Giammarco Baiardi Alessia Cafaro Manuela Stella Michela Cameran Caviglia Maria Gabriella Poeta Giuliana Cangemi Francesca Mattioli Source Type: research

Altered plasma levels of apixaban in major gastrointestinal tract surgery: A case report and review of the literature
We describe a case of suspected altered apixaban disposition in a patient with an upper gastrointestinal cancer resection treated with apixaban for non-valvular atrial fibrillation. Diagnosis of ischemic stroke for left hemiparesis was confirmed due to recent emergence of a hypodense area in the posterior capsular nucleus of ischemic reference in a context of binuclear capsular lacunar lesions. Thus, apixaban underexposure was suspected from anamnestic data and oral anticoagulation was switched to parenteral at the next scheduled dose for stroke recurrence. Before switching apixaban pharmacokinetic analysis was performed a...
Source: Clinical Biochemistry - July 14, 2023 Category: Biochemistry Authors: Giammarco Baiardi Alessia Cafaro Manuela Stella Michela Cameran Caviglia Maria Gabriella Poeta Giuliana Cangemi Francesca Mattioli Source Type: research

PARP14 regulates EP4 receptor expression in human colon cancer HCA-7  cells
Biochem Biophys Res Commun. 2022 Jul 19;623:133-139. doi: 10.1016/j.bbrc.2022.07.055. Online ahead of print.ABSTRACTE type prostanoid 4 (EP4) receptors and their signaling pathways have been implicated in the development and malignant transformation of colorectal cancer. We herein demonstrated that the mono(ADP-ribosyl)ation of histone deacetylase (HDAC)1 and HDAC2 by poly(ADP-ribose) polymerase 14 (PARP14) may be required to induce the expression of EP4 receptors. The suppression of PARP14 activity by siRNA and/or its inhibitors reduced the mRNA expression of EP4 receptors. Thus, the expression of their proteins to approx...
Source: Biochemical and Biophysical Research communications - August 1, 2022 Category: Biochemistry Authors: Masato Mashimo Asuka Shimizu Aimi Mori Ayaka Hamaguchi Keijo Fukushima Naofumi Seira Takeshi Fujii Hiromichi Fujino Source Type: research

The impact of hypoxia on cell death pathways.
Abstract Hypoxia is a frequently encountered feature of the cellular microenvironment in a number of pathophysiological processes in which programmed cell death (apoptosis) affects disease progression including, but not limited to, cancer, chronic inflammation, myocardial infarction, stroke and ischaemic acute kidney injury. In these diseases, the presence of hypoxia can significantly affect the rate of cell death and thus may make a significant contribution to disease progression. In the present review, we discuss the complex relationship that exists between the presence of hypoxia and the regulation of cell deat...
Source: Biochemical Society Transactions - April 1, 2013 Category: Biochemistry Authors: Lenihan CR, Taylor CT Tags: Biochem Soc Trans Source Type: research

Preparation of well-defined ibuprofen prodrug micelles by RAFT polymerization.
Abstract Non-steroidal anti-inflammatory drugs (NSAIDs) are widely used to treat acute pain, fever and inflammation and are being explored in a new indication in cancer. Side effects associated with long-term use of NSAIDs such as gastrointestinal damage and elevated risk of stroke, however, can limit their use and exploration in new indications.　Here we report a facile method to prepare well-defined amphiphilic diblock copolymer NSAID prodrugs by direct reversible addition fragmentation transfer (RAFT) polymerization of the acrylamide derivative of ibuprofen (IBU), a widely used NSAID. The synthesis and self-as...
Source: Biomacromolecules - August 12, 2013 Category: Biochemistry Authors: Hasegawa U, van der Vlies AJ, Wandrey C, Hubbell JA Tags: Biomacromolecules Source Type: research

Arguments Against Non-programmed Aging Theories.
Abstract Until recently, non-programmed theories of biological aging were popular because of the widespread perception that the evolution process could not support the development and retention of programmed aging in mammals. However, newer evolutionary mechanics theories including group selection, kin selection, and evolvability theory support mammal programmed aging, and multiple programmed aging theories have been published based on the new mechanics. Some proponents of non-programmed aging still contend that their non-programmed theories are superior despite the new mechanics concepts. However, as summarized h...
Source: Biochemistry (Moscow) - September 1, 2013 Category: Biochemistry Authors: Goldsmith TC Tags: Biochemistry (Mosc) Source Type: research