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https://www.readbyqxmd.com/read/28447602/spatial-computation-of-intratumoral-t-cells-correlates-with-survival-of-patients-with-pancreatic-cancer
#1
Julienne L Carstens, Pedro Correa de Sampaio, Dalu Yang, Souptik Barua, Huamin Wang, Arvind Rao, James P Allison, Valerie S LeBleu, Raghu Kalluri
The exact nature and dynamics of pancreatic ductal adenocarcinoma (PDAC) immune composition remains largely unknown. Desmoplasia is suggested to polarize PDAC immunity. Therefore, a comprehensive evaluation of the composition and distribution of desmoplastic elements and T-cell infiltration is necessary to delineate their roles. Here we develop a novel computational imaging technology for the simultaneous evaluation of eight distinct markers, allowing for spatial analysis of distinct populations within the same section...
April 27, 2017: Nature Communications
https://www.readbyqxmd.com/read/28424339/discovery-of-double-stranded-genomic-dna-in-circulating-exosomes
#2
Raghu Kalluri, Valerie S LeBleu
It is becoming increasingly clear that small vesicles released from cells (extracellular vesicles [EVs]) represent a heterogeneous population implicated in cell-to-cell communication. The classifications and nomenclature of EVs are evolving as enrichment strategies and specific characteristics are being unraveled. At present, physical properties of EVs-namely, size, shape, and density-are often used to identify subpopulations of EVs. A distinct group of EVs, termed exosomes, largely defined by their small size (∼40-150 nm) and proposed subcellular origin, has been extensively studied in several aspects of cancer biology...
April 19, 2017: Cold Spring Harbor Symposia on Quantitative Biology
https://www.readbyqxmd.com/read/28424335/a-conversation-with-raghu-kalluri
#3
(no author information available yet)
No abstract text is available yet for this article.
April 19, 2017: Cold Spring Harbor Symposia on Quantitative Biology
https://www.readbyqxmd.com/read/28361374/spatial-gradients-in-the-size-of-inner-hair-cell-ribbons-emerge-before-the-onset-of-hearing-in-rats
#4
Radha Kalluri, Maya Monges-Hernandez
The size and locations of pre-synaptic ribbons and glutamate receptors within and around inner hair cells are correlated with auditory afferent response features such as the spontaneous discharge rate (SR), threshold, and dynamic range of sound intensity representation (the so-called SR-groups). To test if the development of these spatial gradients requires experience with sound intensity, we quantified the size and spatial distribution of synaptic ribbons from the inner hair cells of neonatal rats before and after the onset of hearing (from post-natal day (P) 3 to P33)...
March 30, 2017: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/28334208/morphologically-constrained-spectral-unmixing-by-dictionary-learning-for-multiplex-fluorescence-microscopy
#5
Murad Megjhani, Pedro Correa de Sampaio, Julienne Leigh Carstens, Raghu Kalluri, Badrinath Roysam
Motivation: Current spectral unmixing methods for multiplex fluorescence microscopy have a limited ability to cope with high spectral overlap as they only analyze spectral information over individual pixels. Here, we present adaptive Morphologically Constrained Spectral Unmixing (MCSU) algorithms that overcome this limitation by exploiting morphological differences between sub-cellular structures, and their local spatial context. Results: The proposed method was effective at improving spectral unmixing performance by exploiting: (i) a set of dictionary-based models for object morphologies learned from the image data; and (ii) models of spatial context learned from the image data using a total variation algorithm...
March 2, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28295622/low-vitamin-d-exposure-is-associated-with-higher-risk-of-infection-in-renal-transplant-recipients
#6
Hari V Kalluri, Lauren M Sacha, Amanda I Ingemi, Michael A Shullo, Heather J Johnson, Puneet Sood, Amit D Tevar, Abhinav Humar, Raman Venkataramanan
BACKGROUND: Vitamin D is a steroid hormone with multiple vital roles within the immune system. Various studies evaluated the influence of vitamin D on infections postrenal transplantation and found contrasting results. This study aimed to assess the relationship between vitamin D status and the incidence of infection in renal transplant recipients. METHODS: This is a retrospective cohort study of adult renal transplant recipients at the University of Pittsburgh Medical Center between 2005 and 2012...
March 10, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28285193/tolerability-usability-and-acceptability-of-dissolving-microneedle-patch-administration-in-human-subjects
#7
Jaya Arya, Sebastien Henry, Haripriya Kalluri, Devin V McAllister, Winston P Pewin, Mark R Prausnitz
To support translation of microneedle patches from pre-clinical development into clinical trials, this study examined the effect of microneedle patch application on local skin reactions, reliability of use and acceptability to patients. Placebo patches containing dissolving microneedles were administered to fifteen human participants. Microneedle patches were well tolerated in the skin with no pain or swelling and only mild erythema localized to the site of patch administration that resolved fully within seven days...
June 2017: Biomaterials
https://www.readbyqxmd.com/read/28251710/feasibility-of-cathode-surface-coating-technology-for-high-energy-lithium-ion-and-beyond-lithium-ion-batteries
#8
REVIEW
Sujith Kalluri, Moonsu Yoon, Minki Jo, Hua Kun Liu, Shi Xue Dou, Jaephil Cho, Zaiping Guo
Cathode material degradation during cycling is one of the key obstacles to upgrading lithium-ion and beyond-lithium-ion batteries for high-energy and varied-temperature applications. Herein, we highlight recent progress in material surface-coating as the foremost solution to resist the surface phase-transitions and cracking in cathode particles in mono-valent (Li, Na, K) and multi-valent (Mg, Ca, Al) ion batteries under high-voltage and varied-temperature conditions. Importantly, we shed light on the future of materials surface-coating technology with possible research directions...
March 2, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28122799/cystic-lymphangioma-of-spleen-in-adults
#9
Shalini Duvvada, Debadutta Senapati, Sreenivas Rao Challa, Tejokrishna Kalluri
Splenic diseases are rare. Tumours of the spleen are classified as either benign or malignant. Primary benign tumours of the spleen are extremely rare, identified on surgery and autopsy, accounting for <0.007% of all splenic tumours. Splenic lymphangiomas are benign cystic tumours resulting from congenital malformations of the lymphatic system that appear as a single or multiple lesions of the spleen. It mainly affects children and is rarely manifested after the age of 20 years of age. We report a case of cystic lymphangioma of spleen in a 40-year-old woman admitted with a huge mass in the abdomen, which on imaging found to be a cystic mass arising from spleen...
January 25, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28121262/detection-of-mutant-kras-and-tp53-dna-in-circulating-exosomes-from-healthy-individuals-and-patients-with-pancreatic-cancer
#10
Sujuan Yang, Sara P Y Che, Paul Kurywchak, Jena L Tavormina, Liv B Gansmo, Pedro Correa de Sampaio, Michael Tachezy, Maximilian Bockhorn, Florian Gebauer, Amanda R Haltom, Sonia A Melo, Valerie S LeBleu, Raghu Kalluri
Pancreatic cancer presents with a dismal mortality rate and is in urgent need of methods for early detection with potential for timely intervention. All living cells, including cancer cells, generate exosomes. We previously discovered double stranded genomic DNA in exosomes derived from the circulation of pancreatic cancer patients, which enabled the detection of prevalent mutations associated with the disease. Here, we report a proof-of-concept study that demonstrates the potential clinical utility of circulating exosomal DNA for identification of KRAS(G)(12)(D) and TP53(R)(273)(H) mutations in patients with pancreas-associated pathologies, including pancreatic ductal adenocarcinoma (PDAC), chronic pancreatitis (CP) and intraductal papillary mucinous neoplasm (IPMN), and in healthy human subjects...
March 4, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/28063858/early-and-integrated-palliative-care-to-achieve-a-home-death-in-idiopathic-pulmonary-fibrosis
#11
Meena Kalluri, Janice Richman-Eisenstat
No abstract text is available yet for this article.
January 4, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/28058717/deletional-tolerance-prevents-aqp4-directed-autoimmunity-in-mice
#12
Anna-Lena Vogel, Benjamin Knier, Katja Lammens, Sudhakar Reddy Kalluri, Tanja Kuhlmann, Jeffrey L Bennett, Thomas Korn
Neuromyelitis optica (NMO) is an autoimmune disorder of the central nervous system (CNS) mediated by antibodies to the water channel protein AQP4 expressed in astrocytes. The contribution of AQP4-specific T cells to the class switch recombination of pathogenic AQP4-specific antibodies and the inflammation of the blood-brain barrier is incompletely understood, as immunogenic naturally processed T-cell epitopes of AQP4 are unknown. By immunizing Aqp4(-/-) mice with full-length murine AQP4 protein followed by recall with overlapping peptides, we here identify AQP4(201-220) as the major immunogenic IA(b) -restricted epitope of AQP4...
March 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/27871261/quantitative-characterization-of-t-cell-repertoire-and-biomarkers-in-kidney-transplant-rejection
#13
Houda Alachkar, Martin Mutonga, Taigo Kato, Sowjanya Kalluri, Yoichi Kakuta, Motohide Uemura, Ryoichi Imamura, Norio Nonomura, Vikas Vujjini, Sami Alasfar, Hamid Rabb, Yusuke Nakamura, Nada Alachkar
BACKGROUND: T-cell-mediated rejection (TCMR) remains a major cause of kidney allograft failure. The characterization of T-cell repertoire in different immunological disorders has emerged recently as a novel tool with significant implications. We herein sought to characterize T-cell repertoire using next generation sequencing to diagnose TCMR. METHODS: In this prospective study, we analyzed samples from 50 kidney transplant recipients. We collected blood and kidney transplant biopsy samples at sequential time points before and post transplant...
November 21, 2016: BMC Nephrology
https://www.readbyqxmd.com/read/27850524/886-altered-acyclovir-pharmacokinetics-a-physiologically-based-pharmacokinetic-approach
#14
Joseph Durkin, Hari Kalluri
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27758153/development-and-evaluation-of-a-mixed-gender-multi-talker-matrix-sentence-test-in-australian-english
#15
Heather Kelly, Gaven Lin, Narayan Sankaran, Jing Xia, Sridhar Kalluri, Simon Carlile
OBJECTIVE: To develop, in Australian English, the first mixed-gender, multi-talker matrix sentence test. DESIGN: Speech material consisted of a 50-word base matrix whose elements can be combined to form sentences of identical syntax but unpredictable content. Ten voices (five female and five male) were recorded for editing and preliminary level equalization. Elements were presented as single-talker sentences-in-noise during two perceptual tests: an optimization phase that provided the basis for further level correction, and an evaluation phase that perceptually validated those changes...
October 19, 2016: International Journal of Audiology
https://www.readbyqxmd.com/read/27757116/down-regulation-of-korrigan-like-endo-%C3%AE-1-4-glucanase-genes-impacts-carbon-partitioning-mycorrhizal-colonization-and-biomass-production-in-populus
#16
Udaya C Kalluri, Raja S Payyavula, Jessy L Labbé, Nancy Engle, Garima Bali, Sara S Jawdy, Robert W Sykes, Mark Davis, Arthur Ragauskas, Gerald A Tuskan, Timothy J Tschaplinski
A greater understanding of the genetic regulation of plant cell wall remodeling and the impact of modified cell walls on plant performance is important for the development of sustainable biofuel crops. Here, we studied the impact of down-regulating KORRIGAN-like cell wall biosynthesis genes, belonging to the endo-β-1,4-glucanase gene family, on Populus growth, metabolism and the ability to interact with symbiotic microbes. The reductions in cellulose content and lignin syringyl-to-guaiacyl unit ratio, and increase in cellulose crystallinity of cell walls of PdKOR RNAi plants corroborated the functional role of PdKOR in cell wall biosynthesis...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27728216/didmoad-syndrome
#17
Kalluri Chinna Rao, M Madhusudhan Babu
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27728192/a-study-of-association-of-subclinical-hypothyroidism-and-diabetic-retinopathy-in-diabetic-patients
#18
Kalluri Chinna Rao, M Madhusudhana Babu
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27692563/low-dose-hydralazine-prevents-fibrosis-in-a-murine-model-of-acute-kidney-injury-to-chronic-kidney-disease-progression
#19
Björn Tampe, Ulrike Steinle, Désirée Tampe, Julienne L Carstens, Peter Korsten, Elisabeth M Zeisberg, Gerhard A Müller, Raghu Kalluri, Michael Zeisberg
Acute kidney injury (AKI) and progressive chronic kidney disease (CKD) are intrinsically tied syndromes. In this regard, the acutely injured kidney often does not achieve its full regenerative capacity and AKI directly transitions into progressive CKD associated with tubulointerstitial fibrosis. Underlying mechanisms of such AKI-to-CKD progression are still incompletely understood and specific therapeutic interventions are still elusive. Because epigenetic modifications play a role in maintaining tissue fibrosis, we used a murine model of ischemia-reperfusion injury to determine whether aberrant promoter methylation of RASAL1 contributes causally to the switch between physiological regeneration and tubulointerstitial fibrogenesis, a hallmark of AKI-to-CKD progression...
January 2017: Kidney International
https://www.readbyqxmd.com/read/27684478/single-plant-derived-nanotechnology-for-synergistic-antibacterial-therapies
#20
Jhansi R Kalluri, Roberto Gonzalez-Rodriguez, Phil S Hartman, Armando Loni, Leigh T Canham, Jeffery L Coffer
Multiple new approaches to tackle multidrug resistant infections are urgently needed and under evaluation. One nanotechnology-based approach to delivering new relevant therapeutics involves silicon accumulator plants serving as a viable silicon source in green routes for the fabrication of the nanoscale drug delivery carrier porous silicon (pSi). If the selected plant leaf components contain medicinally-active species as well, then a single substance can provide not only the nanoscale high surface area drug delivery carrier, but the drug itself...
2016: PloS One
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