Results 61 to 70 of about 90,416 (304)

Light-Induced Conversion of Nicotinamide Adenine Dinucleotide to Nicotinamide Adenine Dinucleotide Phosphate in Higher Plant Leaves [PDF]

Plant Physiology, 1981
Light-induced conversion of NAD to NADP was investigated in higher plants. Upon illumination, conversion of NAD to NADP was observed in intact leaves of wheat and pea following incubation in the dark. This conversion was also observed in mesophyll protoplasts of wheat leaves when they were isolated in the dark or isolated in light and then preincubated
Shoshi Muto, Shigetoh Miyachi, Hideaki Usuda, Gerald E. Edwards, James A. Bassham   +4 more
openaire   +2 more sources

Natural Products as Geroprotective Modulators in Diabetic Nephropathy: A Mechanistic Framework Integrating Aging Hallmarks and the AMPK–SIRT1–Nrf2 Axis

Aging and Cancer, EarlyView.
Natural products target the aging kidney in diabetic nephropathy by restoring the AMPK–SIRT1–Nrf2 axis, reducing oxidative stress, inflammation, fibrosis, and cellular senescence while enhancing mitochondrial biogenesis and antioxidant defenses.
Sherif Hamidu, Latif Adams, Eunice Ampem‐Danso, Justice Kumi, Abigail Aning, Fatima Hamidu, Mustapha Abdul Mumin Mohammed, Ayuba Nii Darku Ankrah, Seth Kwabena Amponsah   +8 more
wiley   +1 more source

The function of nicotinamide phosphoribosyl transferase (NAMPT) and its role in diseases

Frontiers in Molecular Biosciences
Nicotinamide phosphoribosyl transferase (NAMPT) is a rate-limiting enzyme in the mammalian nicotinamide adenine dinucleotide (NAD) salvage pathway, and plays a vital role in the regulation of cell metabolic activity, reprogramming, aging and apoptosis ...
Aihong Peng, Junqin Li, Jianxiao Xing, Yuanjun Yao, Xuping Niu, Kaiming Zhang   +5 more
doaj   +1 more source

Metabolic and Organelle Morphology Defects in Mice and Human Patients Define Spinocerebellar Ataxia Type 7 as a Mitochondrial Disease

Cell Reports, 2019
Summary: Spinocerebellar ataxia type 7 (SCA7) is a retinal-cerebellar degenerative disorder caused by CAG-polyglutamine (polyQ) repeat expansions in the ataxin-7 gene.
Jacqueline M. Ward, Colleen A. Stoyas, Pawel M. Switonski, Farid Ichou, Weiwei Fan, Brett Collins, Christopher E. Wall, Isaac Adanyeguh, Chenchen Niu, Bryce L. Sopher, Chizuru Kinoshita, Richard S. Morrison, Alexandra Durr, Alysson R. Muotri, Ronald M. Evans, Fanny Mochel, Albert R. La Spada   +16 more
doaj   +1 more source

Inhibition of Rat Liver Nicotinamide Adenine Dinucleotide Kinase by Reduced Nicotinamide Adenine Dinucleotide Phosphate

Journal of Biological Chemistry, 1968
Abstract Rat liver NAD kinase (ATP:NAD 2'-phosphotransferase, EC 2.7.1.23) was purified about 70-fold. The Michaelis-Menten constants (Km) for NAD and ATP were 8 x 10-4 m and 2 x 10-3 m, respectively. NAD kinase activity was markedly inhibited by NADH and also NADPH.
H, Oka, J B, Field
openaire   +2 more sources

Zinc Exposure Causes Disulfidptosis to Induce Miscarriage by Up‐Regulating GATA1/METTL1/SLC7A11 Axis

Advanced Science, EarlyView.
Zn exposure up‐regulates GATA1, promoting GATA1‐mediated METTL1 and SLC7A11 transcription. It also enhances METTL1‐mediated m7G modification on SLC7A11 mRNA, increasing SLC7A11 mRNA stability. Ultimately, Zn exposure up‐regulates SLC7A11 at both transcriptional and post‐transcriptional levels, causing disulfidptosis. Knockdown of murine Slc7a11, Gata1,
Wenxin Huang, Yi Sun, Yanxin Wang, Haijun Yan, Xiaoping Yue, Weidong Wu, Xueyu Chen, Jinfang Zhang, Yanbing Lin, Qiong Lei, Nan Ji, Shuaishuai Xing, Liqin Zeng, Qingzheng Kang, Depeng Zhao, Geng Guo, Huidong Zhang   +16 more
wiley   +1 more source

Targeting Lactate and Lactylation in Cancer Metabolism and Immunotherapy

Advanced Science, EarlyView.
Lactate, once deemed a metabolic waste, emerges as a central regulator of cancer progression. This review elucidates how lactate and its epigenetic derivative, protein lactylation, orchestrate tumor metabolism, immune suppression, and therapeutic resistance.
Jiajing Gong, Yuhang Xie, Zhijie Weng, Yongzhi Wu, Longjiang Li, Bo Li   +5 more
wiley   +1 more source

Dual‐Responsive Dynamic Covalent Bond‐Based Assembly of Lipid‐Nanozyme Systems via Multi‐Target Synergy and Efficient Target Enrichment for Ischemic Stroke Therapy

Advanced Science, EarlyView.
This system adopts a biomimetic phospholipid structure, covalently binding iNOS inhibitors, neuroprotective agent PCA and vitamin E derivatives through pH/ROS dual‐responsive bonds, and assembles them with Prussian blue nanozyme to form PBB@AHA. It can efficiently penetrate the blood‐brain barrier and simultaneously release multiple active components ...
Mengcheng Guo, Qingran Guan, Guanyu Qiao, Lixue Zhang, Man Liu, Zhen Li, Qingbiao Yang, Meili Shen, Linlin Liu, Yapeng Li   +9 more
wiley   +1 more source

Endogenous nicotinamide riboside metabolism protects against diet-induced liver damage

Nature Communications, 2019
Nicotinamide adenine dinucleotide (NAD+) sustains cellular energy metabolism, functions as a substrate of Sirt and PARP enzymes, and its supplementation is explored therapeutically in aging and other contexts.
Audrey Sambeat, Joanna Ratajczak, Magali Joffraud, José L. Sanchez-Garcia, Maria P. Giner, Armand Valsesia, Judith Giroud-Gerbetant, Miriam Valera-Alberni, Angelique Cercillieux, Marie Boutant, Sameer S. Kulkarni, Sofia Moco, Carles Canto   +12 more
doaj   +1 more source

Combating VEGFA‐siRNA‐Induced Metabolic Reprogramming via Glucose Utilization Deprivation

Advanced Science, EarlyView.
An ionizable lipid nanoparticle co‐delivers VEGFA siRNA and glucose oxidase to tumors to counteract VEGFA knockdown‐induced, glutamine‐driven metabolic compensation. Enzymatic glucose consumption reverses the adaptive pathways and restores metabolism toward baseline, thereby sensitizing tumors to therapy.
Lulu Zheng, Shuai Guo, Yingjixing Luo, Pengfei Wu, Haiyin Yang, Yingqiu Xie, Yuchuan Fan, Qing Liu, Bo Hu, Jia Huang, Yuanyu Huang   +10 more
wiley   +1 more source