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Articles 451 - 458 of 458
Full-Text Articles in Nutrition
Ampk In The Ventromedial Nucleus Of The Hypothalamus: A Key Regulator For Thermogenesis, Hailan Liu, Yong Xu, Fang Hu
Ampk In The Ventromedial Nucleus Of The Hypothalamus: A Key Regulator For Thermogenesis, Hailan Liu, Yong Xu, Fang Hu
Children’s Nutrition Research Center Staff Publications
Obesity has become a global health issue, but effective therapies remain very limited. Adaptive thermogenesis promotes weight loss by dissipating energy in the form of heat, thereby representing a promising target to counteract obesity. Notably, the regulation of thermogenesis is tightly orchestrated by complex neuronal networks, especially those in the hypothalamus. Recent evidence highlights the importance of adenosine monophosphate-activated protein kinase (AMPK) within the ventromedial nucleus of the hypothalamus (VMH) in modulating thermogenesis. Various molecules, such as GLP-1, leptin, estradiol, and thyroid hormones, have been reported to act on the VMH to inhibit AMPK, which subsequently increases thermogenesis through the …
Development Of A Rapid And Efficient Protoplast Isolation And Transfection Method For Chickpea (Cicer Arietinum), Ninghui Cheng, Paul A Nakata
Development Of A Rapid And Efficient Protoplast Isolation And Transfection Method For Chickpea (Cicer Arietinum), Ninghui Cheng, Paul A Nakata
Children’s Nutrition Research Center Staff Publications
Chickpea (Cicer arietinum L.) is the second most important grain legume worldwide. Recent advances in the sequencing of the chickpea genome has provided a new and valuable resource to aid efforts in gene discovery and crop trait improvement. Technical difficulties in stable chickpea transgenics and the lack of a transient expression system for rapid analysis of gene expression and function; however, has limited the usefulness of this genomic resource. As a step toward alleviating this limitation, we report here the development of a simple and efficient transient gene expression protocol. Using leaves from chickpea seedlings, we have established a …
Classify Multicategory Outcome In Patients With Lung Adenocarcinoma Using Clinical, Transcriptomic And Clinico-Transcriptomic Data: Machine Learning Versus Multinomial Models, Fei Deng, Lanlan Shen, He Wang, Lanjing Zhang
Classify Multicategory Outcome In Patients With Lung Adenocarcinoma Using Clinical, Transcriptomic And Clinico-Transcriptomic Data: Machine Learning Versus Multinomial Models, Fei Deng, Lanlan Shen, He Wang, Lanjing Zhang
Children’s Nutrition Research Center Staff Publications
Classification of multicategory survival-outcome is important for precision oncology. Machine learning (ML) algorithms have been used to accurately classify multi-category survival-outcome of some cancer-types, but not yet that of lung adenocarcinoma. Therefore, we compared the performances of 3 ML models (random forests, support vector machine [SVM], multilayer perceptron) and multinomial logistic regression (Mlogit) models for classifying 4-category survival-outcome of lung adenocarcinoma using the TCGA. Mlogit model overall performed similar to SVM and multilayer perceptron models (micro-average area under curve=0.82), while random forests model was inferior. Surprisingly, transcriptomic data alone and clinico-transcriptomic data appeared sufficient to accurately classify the 4-category survival-outcome …
Platiscity Of C. Elegans Germline Stem Cells Under Nutritional And Metabolic Stress, Kenneth Trimmer
Platiscity Of C. Elegans Germline Stem Cells Under Nutritional And Metabolic Stress, Kenneth Trimmer
Dissertations and Theses (Open Access)
Stem cells are integral for tissue maintenance and fertility. Therefore, understanding how stem cells are regulated under stress is imperative. When confronted with acute starvation, stem cells must conserve energy and metabolites to cope with the lack of an external source. Caenorhabditis elegans germline stem cells (GSCs) are an excellent model for studying stem cell properties and regulation as they can divide throughout the life of the organism. While GSCs are an adult stem cell population, their cell cycle structure more closely mimics mouse and human embryonic stem cells with short G1 and long S phases. In this thesis, I …
Steroid Receptor Coactivator-1 Modulates The Function Of Pomc Neurons And Energy Homeostasis, Yongjie Yang, Agatha A Van Der Klaauw, Liangru Zhu, Tessa M Cacciottolo, Yanlin He, Lukas K J Stadler, Chunmei Wang, Pingwen Xu, Kenji Saito, Antentor Hinton, Xiaofeng Yan, Julia M Keogh, Elana Henning, Matthew C Banton, Audrey E Hendricks, Elena G Bochukova, Vanisha Mistry, Katherine L Lawler, Lan Liao, Jianming Xu, Stephen O'Rahilly, Qingchun Tong, Uk10k Consortium, Inês Barroso, Bert W O'Malley, I Sadaf Farooqi, Yong Xu
Steroid Receptor Coactivator-1 Modulates The Function Of Pomc Neurons And Energy Homeostasis, Yongjie Yang, Agatha A Van Der Klaauw, Liangru Zhu, Tessa M Cacciottolo, Yanlin He, Lukas K J Stadler, Chunmei Wang, Pingwen Xu, Kenji Saito, Antentor Hinton, Xiaofeng Yan, Julia M Keogh, Elana Henning, Matthew C Banton, Audrey E Hendricks, Elena G Bochukova, Vanisha Mistry, Katherine L Lawler, Lan Liao, Jianming Xu, Stephen O'Rahilly, Qingchun Tong, Uk10k Consortium, Inês Barroso, Bert W O'Malley, I Sadaf Farooqi, Yong Xu
Children’s Nutrition Research Center Staff Publications
Hypothalamic neurons expressing the anorectic peptide Pro-opiomelanocortin (Pomc) regulate food intake and body weight. Here, we show that Steroid Receptor Coactivator-1 (SRC-1) interacts with a target of leptin receptor activation, phosphorylated STAT3, to potentiate Pomc transcription. Deletion of SRC-1 in Pomc neurons in mice attenuates their depolarization by leptin, decreases Pomc expression and increases food intake leading to high-fat diet-induced obesity. In humans, fifteen rare heterozygous variants in SRC-1 found in severely obese individuals impair leptin-mediated Pomc reporter activity in cells, whilst four variants found in non-obese controls do not. In a knock-in mouse model of a loss of function …
Clinical And Therapeutic Significance Of Obesity In Melanoma, Jennifer L. Mcquade
Clinical And Therapeutic Significance Of Obesity In Melanoma, Jennifer L. Mcquade
Dissertations and Theses (Open Access)
While the FDA approval of targeted and immune therapies in metastatic melanoma (MM) have dramatically improved outcomes in this disease, de novo and/or acquired resistance can limit the clinical benefit of these agents. The IGF-1/PI3K/AKT pathway has been implicated in resistance to both targeted and immune therapy. The IGF-1/PI3K/AKT pathway has also been shown to play a key role in the pathogenesis of obesity in other malignancies. To date, the impact of energy balance on clinical outcomes and therapeutic response in MM has not been studied. I hypothesized that energy balance would impact the molecular biology, behavior, and drug sensitivity …
Acceleration Of The Panin Development In Mice Expressing Oncogenic K-Ras Due To A High Fat Diet, Bincy Philip
Acceleration Of The Panin Development In Mice Expressing Oncogenic K-Ras Due To A High Fat Diet, Bincy Philip
Dissertations and Theses (Open Access)
Obesity is postulated to be one of the major risk factors for pancreatic cancer, and recently it was indicated that an elevated body mass index (BMI correlates strongly with a decrease in patient survival. Despite the evident relationship, the molecular mechanisms involved are unclear. Oncogenic mutation of K-Ras is found early and is universal in pancreatic cancer. Extensive evidence indicates oncogenic K-Ras is not entirely active and it requires a triggering event to surpass the activity of Ras beyond the threshold necessary for a Ras-inflammation feed-forward loop. We hypothesize that high fat intake induces a persistent low level inflammatory response …
Targeting Akt/Mtor Signaling Pathways During Murine Skin Tumor Promotion And The Impact Of Dietary Energy Balance Manipulation, Laura A. Checkley
Targeting Akt/Mtor Signaling Pathways During Murine Skin Tumor Promotion And The Impact Of Dietary Energy Balance Manipulation, Laura A. Checkley
Dissertations and Theses (Open Access)
The prevalence of obesity has continued to rise over the last several decades in the United States lending to overall increases in risk for chronic diseases including many types of cancer. In contrast, reduction in energy consumption via calorie restriction (CR) has been shown to be a potent inhibitor of carcinogenesis across a broad range of species and tumor types. Previous data has demonstrated differential signaling through Akt and mTOR via the IGF-1R and other growth factor receptors across the diet-induced obesity (DIO)/CR spectrum. Furthermore, mTORC1 is known to be regulated directly via nutrient availability, supporting its role in the …