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C Schöfl et al.
Endocrinology, 141(11), 4065-4071 (2000-11-23)
Insulin secretion is under multifactorial control by glucose and neurohumoral factors like acetylcholine (ACH), which activate the Ca2+/phospholipase C signaling pathway. All insulin secretagogues elevate cytosolic free Ca2+ ([Ca2+]i) that is central to the stimulation of insulin secretion. The actions
Jeremy J P Shaw et al.
Molecular cancer therapeutics, 19(12), 2621-2633 (2020-10-23)
Therapies for head and neck squamous cell carcinoma (HNSCC) are, at best, moderately effective, underscoring the need for new therapeutic strategies. Ceramide treatment leads to cell death as a consequence of mitochondrial damage by generating oxidative stress and causing mitochondrial
Orientation and conformation of methyl pyruvate on Ni (111).
Castonguay M, et al.
Journal of the American Chemical Society, 122(3), 518-524 (2000)
Enantioselective hydrogenation I. Surface conditions during methyl pyruvate hydrogenation catalyzed by cinchonidine-modified platinum/silica (EUROPT-1).
Sutherland IM, et al.
J. Catal., 125(1), 77-88 (1990)
Young-Ra Cho et al.
Molecular oncology, 12(7), 1203-1215 (2018-05-24)
Matrine is a natural compound extracted from the herb Sophora flavescens Ait which is widely used in traditional Chinese medicine for treating various diseases. Recently, matrine was reported to have antitumor effects against a variety of cancers without any obvious
Gabriella M Dahlgren et al.
Biochimica et biophysica acta, 1724(1-2), 23-36 (2005-05-11)
Glucose induces complex patterns of oscillations in intracellular Ca2+ concentration ([Ca2+]i), metabolism and secretion in islets of Langerhans including "slow" and "fast" pulses with period of 2-5 min and 10-20 s respectively. In an effort to elucidate the origin of
Jong Gab Jung et al.
Molecular and cellular endocrinology, 345(1-2), 79-87 (2011-08-02)
Elevated fatty acid levels have been thought to contribute to insulin resistance. Repression of the glucose transporter 4 (GLUT4) gene as well as impaired GLUT4 translocation may be a mediator for fatty acid-induced insulin resistance. This study was initiated to
Y-H Suh et al.
The Journal of endocrinology, 183(1), 133-144 (2004-11-05)
The short heterodimer partner (SHP) (NR0B2) is an orphan nuclear receptor whose function in pancreatic beta-cells is unclear. Mitochondrial uncoupling protein (UCP2) in beta-cells is upregulated in obesity-related diabetes, causing impaired glucose-stimulated insulin secretion (GSIS). We investigated whether SHP plays
Hideaki Tagashira et al.
Biochimica et biophysica acta, 1840(12), 3320-3334 (2014-09-02)
Amyotrophic lateral sclerosis (ALS) is a disease caused by motor neuron degeneration. Recently, a novel SIGMAR1 gene variant (p.E102Q) was discovered in some familial ALS patients. We address mechanisms underlying neurodegeneration caused by the mutation using Neuro2A cells overexpressing σ1R(E102Q)
Emma Heart et al.
American journal of physiology. Endocrinology and metabolism, 292(5), E1295-E1300 (2007-01-11)
Pulsatile insulin output, paralleled by oscillations in intracellular Ca(2+), reflect oscillating metabolism within beta-cells in response to secretory fuels. Here we question whether oscillatory periodicity is conserved or varied from stimulation to stimulation, whether glycolysis is essential for the manifestation
Jun-Kyu Byun et al.
EMBO reports, 20(6) (2019-04-17)
Oncogenic signals contribute to enhanced glycolysis and mTORC1 activity, leading to rapid cell proliferation in cancer. Regulation of glycolysis and mTORC1 by PI3K/Akt signaling is well established, but how KRAS-induced MEK signaling regulates these pathways remains poorly understood. Here, we
Martina Düfer et al.
The Biochemical journal, 368(Pt 3), 817-825 (2002-09-28)
In pancreatic beta-cells, methyl pyruvate is a potent secretagogue and is widely used to study stimulus-secretion coupling. In contrast with pyruvate, which barely stimulates insulin secretion, methyl pyruvate was suggested to act as an effective mitochondrial substrate. We show that
Durgesh Nandini Das et al.
Free radical biology & medicine, 112, 452-463 (2017-08-28)
Mitophagy, a special type of autophagy, plays an important role in the mitochondria quality control and cellular homeostasis. In this study, we examined the molecular mechanism of mitophagy induction with benzo[a]pyrene (B[a]P), a ubiquitous polycyclic aromatic hydrocarbon, which acts as
Dimethyl 2, 3-Dimethylenebutanedioate from Methyl Pyruvate and Methyl Acrylate.
Grundke C and Hoffman HMR.
Chemische Berichte, 120(8), 1461-1462 (1987)
Chirag B Godiya et al.
Journal of environmental management, 231, 1012-1020 (2019-01-04)
A big challenge for the civilization in energy saving/waste management can be "the regeneration of monomers from the waste plastics followed by their re-polymerization" using an ideal recycling method. Herein, we investigate the thermal depolymerization of poly(methyl methacrylate) (PMMA) using
Enantioselective hydrogenation of methyl pyruvate over polymer-stabilized and supported iridium clusters.
Zuo X, et al.
J. Mol. Catal. A: Chem., 147(1), 63-72 (1999)
Bo Fan et al.
Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology, 43(3), 1003-1011 (2017-10-03)
Tetrandrine and Fangchinoline (Fcn) are two natural products that are found in Stephania tetrandra. Tetrandrine is a known anti-bladder cancer compound, but the effects of Fcn on bladder cancer have been previously unclear. In the present study, we focused on
Ye Zhuo et al.
Antonie van Leeuwenhoek, 113(3), 365-375 (2019-11-07)
A novel Gram-stain-positive bacterial strain, CHu50b-6-2T, was isolated from a 67-cm-long sediment core collected from the Daechung Reservoir at a water depth of 17 m, Daejeon, Republic of Korea. The cells of strain CHu50b-6-2T were aerobic non-motile and formed yellow colonies
P Maechler et al.
The EMBO journal, 16(13), 3833-3841 (1997-07-01)
In the pancreatic beta-cell, insulin secretion is stimulated by glucose metabolism resulting in membrane potential-dependent elevation of cytosolic Ca2+ ([Ca2+]c). This cascade involves the mitochondrial membrane potential (delta psi[m]) hyperpolarization and elevation of mitochondrial Ca2+ ([Ca2+]m) which activates the Ca(2+)-sensitive
Fundamental aspects of enantioselective heterogeneous catalysis: the surface chemistry of methyl pyruvate on Pt {111}.
The Journal of Physical Chemistry B, 104(41), 9696-9703 (2000)
Raymond Liang et al.
Cell stem cell, 26(3), 359-376 (2020-02-29)
Quiescence is a fundamental property that maintains hematopoietic stem cell (HSC) potency throughout life. Quiescent HSCs are thought to rely on glycolysis for their energy, but the overall metabolic properties of HSCs remain elusive. Using combined approaches, including single-cell RNA
D A Basketter et al.
Contact dermatitis, 49(1), 37-41 (2003-12-04)
The accepted approach to the interpretation of local lymph node assay (LLNA) data requires comparison of responses in the test groups with background activity found in concurrent vehicle-treated controls. However, of established value in the interpretation of toxicity test data
Rishi Raj Chhipa et al.
Nature cell biology, 20(7), 823-835 (2018-06-20)
Stress is integral to tumour evolution, and cancer cell survival depends on stress management. We found that cancer-associated stress chronically activates the bioenergetic sensor AMP kinase (AMPK) and, to survive, tumour cells hijack an AMPK-regulated stress response pathway conserved in
W S Zawalich et al.
The Journal of biological chemistry, 272(6), 3527-3531 (1997-02-07)
The methyl ester of pyruvic acid (methyl pyruvate) stimulated a dose-dependent increase in insulin secretion from isolated perifused rat islets. The threshold level for release was about 10 mM, and at 20 mM the addition of MP to perifused islets
I Valverde et al.
International journal of molecular medicine, 7(6), 621-623 (2001-05-15)
Methyl pyruvate (MP) stimulates insulin release both in vivo and in vitro. The present study aims at investigating whether MP is also able to enhance the B-cell secretory response to glucagon-like peptide 1 (GLP-1). In anaesthetized rats receiving a primed
Xingyu Wu et al.
Cancer research, 79(17), 4360-4370 (2019-07-12)
Metformin may reduce the progression of head and neck squamous cell carcinoma (HNSCC); however, whether metformin acts by altering the host metabolism or targets cancer-initiating cells remains poorly understood. This gap in knowledge has prevented the stratification of patient populations
Kyoung-Jin Jang et al.
Nature communications, 6, 6750-6750 (2015-04-11)
During immune reactions, functionally distinct B-cell subsets are generated by stochastic processes, including class-switch recombination (CSR) and plasma cell differentiation (PCD). In this study, we show a strong association between individual B-cell fates and mitochondrial functions. CSR occurs specifically in
Shinji Kondou et al.
Physical chemistry chemical physics : PCCP, 21(9), 5097-5105 (2019-02-15)
Recent studies have suggested that a Li ion hopping or ligand- or anion-exchange mechanism is largely involved in Li ion conduction of highly concentrated liquid electrolytes. To understand the determining factors for the Li ion hopping/exchange dominant conduction in such
Rodney Hull et al.
Anti-cancer drugs, 21(10), 945-957 (2010-08-19)
Camptothecin (CPT) and CPT-derived drugs are widely used against gynaecological and colorectal cancers. On account of their mechanism of action these drugs target rapidly dividing cells and may have an adverse effect on normal tissues. We sought to investigate their
Gaetano Santulli et al.
The Journal of clinical investigation, 125(5), 1968-1978 (2015-04-07)
The type 2 ryanodine receptor (RyR2) is a Ca2+ release channel on the endoplasmic reticulum (ER) of several types of cells, including cardiomyocytes and pancreatic β cells. In cardiomyocytes, RyR2-dependent Ca2+ release is critical for excitation-contraction coupling; however, a functional
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