Publications by authors named "K S Nayak"

Background Esophageal varices (EVs) develop as a complication of chronic liver disease and, when left unaddressed, can lead to variceal hemorrhage manifesting as severe hematemesis and occasionally, melena. Due to its frequent negative associations, early diagnosis and the implementation of non-selective beta blocker primary prophylaxis are imperative. Although upper gastrointestinal endoscopy has historically been used to image and identify EVs, patients frequently find this intrusive treatment to be uncomfortable and burdensome.

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Background: Contemporary 0.55T magnetic resonance imaging (MRI) is promising for fetal MRI, due to the larger bore, reduced safety concerns, lower acoustic noise, and improved fast imaging capability. In this work, we explore improved fetal cardiovascular magnetic resonance (CMR) without relying on any synchronizing devices, prospective, or retrospective gating, to determine the feasibility of real-time MRI evaluation of fetal cardiac function as well as cardiac and great vessel anatomies by using spiral balanced steady-state free precession (bSSFP) at 0.

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Article Synopsis
  • - During pregnancy and lactation, mammals experience significant changes in their intestinal epithelium, leading to an increase in intestinal surface area through the expansion of villi.
  • - The RANK-RANKL molecular pathway is crucial for this process, protecting gut cells from death and promoting intestinal stem cell activity, which results in villous elongation.
  • - Mice lacking RANK in their intestinal epithelium have offspring that are heavier and more prone to glucose intolerance, highlighting the importance of RANK-RANKL in both immediate and long-term health outcomes for offspring.
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Purpose: To develop a robust single breath-hold approach for volumetric lung imaging at 0.55T.

Method: A balanced-SSFP (bSSFP) pulse sequence with 3D stack-of-spiral (SoS) out-in trajectory for volumetric lung imaging at 0.

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One-carbon (1C) metabolism is a complex network of metabolic reactions closely related to producing 1C units (as methyl groups) and utilizing them for different anabolic processes, including nucleotide synthesis, methylation, protein synthesis, and reductive metabolism. These pathways support the high proliferative rate of cancer cells. While drugs that target 1C metabolism (like methotrexate) have been used for cancer treatment, they often have significant side effects.

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