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Hasan Alghetaa, Amira Mohammed, Muthanna Sultan, Philip Busbee, Angela Murphy, Saurabh Chatterjee, Mitzi Nagarkatti, Prakash Nagarkatti
Staphylococcal enterotoxin B (SEB) is a potent superantigen produced by Staphylococcus aureus that triggers a strong immune response, characterized by cytokine storm, multi-organ failure, and often death. When inhaled, SEB can cause acute lung injury (ALI) and respiratory failure. In this study, we investigated the effect of resveratrol (RES), a phytoallexin, on SEB-driven ALI and mortality in mice. We used a dual-exposure model of SEB in C3H/HeJ mice, which caused 100% mortality within the first 5 days of exposure, and treatment with RES resulted in 100% survival of these mice up to 10 days post-SEB exposure...
March 7, 2018: Journal of Cellular and Molecular Medicine
Seema Dubey, Hyunho Yoon, Mark Steven Cohen, Prakash Nagarkatti, Mitzi Nagarkatti, Dev Karan
A role of inflammation-associated cytokines/chemokines has been implicated in a wide variety of human diseases. Here, we investigated the regulation of inflammatory cytokines released by monocyte-derived THP-1 cells following treatment with the dietary agent withaferin A (WFA). Membrane-based cytokine array profiling of the culture supernatant from adenosine triphosphate-stimulated WFA-treated THP-1 cells showed differential regulation of multiple cytokines/chemokines. A selected group of cytokines/chemokines [interleukin-1 beta (IL-1β), CCL2/MCP-1, granulocyte-macrophage colony stimulating factor, PDGF-AA, PTX3, cystatin-3, relaxin-2, TNFRSF8/CD30, and ACRP30] was validated at the transcription level using qPCR...
2018: Frontiers in Immunology
Tao Zhang, Juhua Zhou, Gene Chi Wai Man, Kam Tong Leung, Bo Liang, Bo Xiao, Xinting Ma, Shaoyan Huang, Huaxiang Huang, Venkatesh L Hegde, Yin Zhong, Yanmin Li, Grace Wing Shan Kong, Alice KaWah Yiu, Joseph Kwong, Pak Cheung Ng, Prakash S Nagarkatti, Mitzi Nagarkatti, Chi Chiu Wang
Endometriosis affects women of reproductive age via unclear immunological mechanism(s). Myeloid-derived suppressor cells (MDSCs) are a heterogeneous group of myeloid cells with potent immunosuppressive and angiogenic properties. Here we found MDSCs significantly increased in the peripheral blood of patients with endometriosis and in the peritoneal cavity of a mouse model of surgically-induced endometriosis. Majority of MDSCs were granulocytic, produced ROS and arginase, and suppressed T cell proliferation. Depletion of MDSCs by antiGr-1 antibody dramatically suppressed development of endometrial lesions in mice...
February 20, 2018: European Journal of Immunology
Negin P Martin, Page Myers, Eugenia Goulding, Shih-Heng Chen, Mitzie Walker, Thomas M Porter, Lucas Van Gorder, Amanda Mathew, Artiom Gruzdev, Charles Romeo
Lentiviruses are highly efficient vehicles for delivering genes into cells. They readily transduce primary and immortalized cells in vivo and in vitro. Genes delivered by lentiviruses are incorporated and replicated as part of their host genome and therefore offer a powerful tool for creation of stable cell lines and transgenic animals. However, the zona pellucida surrounding the fertilized eggs acts as a barrier and hinders lentiviral transduction of embryos. Here, we utilize a laser, typically used to perforate the zona pellucida for in vitro fertilization, to permeabilize the zona for lentiviral gene delivery...
February 13, 2018: Transgenic Research
Barry I Freedman, Amy L Kistler, Peter Skewes-Cox, Don Ganem, Mitzie Spainhour, Jolyn Turner, Jasmin Divers, Carl D Langefeld, Mariana Murea, Pamela J Hicks, Ashok K Hemal, James A Snipes, Lihong Zhao, Johanna R Abend, Douglas S Lyles, Lijun Ma, Karl L Skorecki
Background: Viral infections can trigger chronic kidney disease (CKD) and the urine virome may inform risk. The Natural History of APOL1-Associated Nephropathy Study (NHAANS) reported that urine JC polyomavirus (JCPyV) associated with a lower risk of APOL1-associated nephropathy in African Americans. Herein, association was assessed between urine JCPyV with CKD in African Americans independent from the APOL1 genotype. Methods: Quantitative polymerase chain reaction was performed for urinary detection of JCPyV and BK polyoma virus (BKPyV) in 200 newly recruited nondiabetic African Americans...
February 6, 2018: Nephrology, Dialysis, Transplantation
Claire L Vale, William J Cragg, Ben Cromarty, Bec Hanley, Annabelle South, Richard Stephens, Kate Sturgeon, Mitzy Gafos
BACKGROUND: Patient and public involvement (PPI) in clinical trials aims to ensure that research is carried out collaboratively with patients and/or members of the public. However, current guidance on involving clinical trial participants in PPI activities is not consistent. METHODS: We reviewed the concept of participant involvement, based on our experience. Two workshops were held at the MRCCTU at UCL with the aim of defining participant involvement, considering its rationale; benefits and challenges; and identifying appropriate models for participant involvement in clinical trials...
February 7, 2018: Trials
Trevor Page, Paul J Smith, Keith J Beven, Ian D Jones, J Alex Elliott, Stephen C Maberly, Eleanor B Mackay, Mitzi De Ville, Heidrun Feuchtmayr
The global proliferation of harmful algal blooms poses an increasing threat to water resources, recreation and ecosystems. Predicting the occurrence of these blooms is therefore needed to assist water managers in making management decisions to mitigate their impact. Evaluation of the potential for forecasting of algal blooms using the phytoplankton community model PROTECH was undertaken in pseudo-real-time. This was achieved within a data assimilation scheme using the Ensemble Kalman Filter to allow uncertainties and model nonlinearities to be propagated to forecast outputs...
February 5, 2018: Water Research
Mitzy Gafos, Julie Chas, Gilles Pialoux
No abstract text is available yet for this article.
January 29, 2018: International Journal on Drug Policy
Nicholas Dopkins, Prakash S Nagarkatti, Mitzi Nagarkatti
The importance of the gut microbiome in the regulation of non-infectious diseases has earned recently an unprecedented interest from biomedical researchers. Widespread use of next generation sequencing techniques have prepared a foundation for further research by correlating the presence of specific bacterial species with an onset or severity of a disease state, heralded paradigm-shifting results. This review covers the mechanisms through which a dysbiotic gut microbiota contributes to the pathological symptoms in an autoimmune neurodegenerative disorder, Multiple Sclerosis (MS)...
February 2, 2018: Immunology
Parasmani Pageni, Peng Yang, Yung Pin Chen, Yucheng Huang, Marpe Bam, Tianyu Zhu, Mitzi Nagarkatti, Brian C Benicewicz, Alan W Decho, Chuanbing Tang
Inappropriate and frequent use of antibiotics has led to the development of antibiotic-resistant bacteria, which cause infectious diseases that are difficult to treat. With the rising threat of antibiotic resistance, the need to develop effective new antimicrobial agents is prominent. We report antimicrobial metallopolymer nanoparticles, which were prepared by surface-initiated reversible addition-fragmentation chain transfer polymerization of a cobaltocenium-containing methacrylate monomer from silica nanoparticles...
January 31, 2018: Biomacromolecules
Mitzi Dayanira Estrada-Acosta, Karina Ramirez, José Andrés Medrano-Félix, Nohelia Castro-Del Campo, Hector S López-Moreno, Maribel Jimenez Edeza, Jaime Martínez-Urtaza, Cristóbal Chaidez
This study was performed to evaluate in vitro the adherence and invasiveness capacity of Salmonella Oranienburg and Saintpaul (isolated from river water) exposed to laboratory and river water growth conditions and inoculated into epithelial HEp-2 cell. Results showed that Salmonella Oranienburg and Salmonella Saintpaul showed lower ability to adhere and invade epithelial HEp-2 cells under both growth conditions as compared to Salmonella Typhimurium reference strain. S. Oranienburg adhesion capacity was not affected by the growth conditions, while S...
December 18, 2017: International Journal of Environmental Health Research
Jody Vykoukal, Nan Sun, Clemente Aguilar-Bonavides, Hiroyuki Katayama, Ichidai Tanaka, Johannes F Fahrmann, Michela Capello, Junya Fujimoto, Mitzi Aguilar, Ignacio I Wistuba, Ayumu Taguchi, Edwin J Ostrin, Samir M Hanash
Exosomes and other extracellular vesicles (EVs) have been implicated as mediators of intercellular communication. Their release into the circulation has the potential to inform about tumor status. In-depth proteomic characterization of plasma-derived EVs has been limited by challenges in isolating EVs from protein-abundant biological fluids. We implemented a novel single-step density gradient flotation workflow for efficient and rapid isolation of highly enriched circulating EVs from plasma. Mass-spectrometry analysis of plasma EVs from subjects with lung adenocarcinoma and matched controls resulted in the identification of 640 proteins...
November 10, 2017: Oncotarget
Federico Bocci, Mohit K Jolly, Satyendra C Tripathi, Mitzi Aguilar, Samir M Hanash, Herbert Levine, José N Onuchic
Epithelial-mesenchymal transition (EMT) plays key roles during embryonic development, wound healing and cancer metastasis. Cells in a partial EMT or hybrid epithelial/mesenchymal (E/M) phenotype exhibit collective cell migration, forming clusters of circulating tumour cells-the primary drivers of metastasis. Activation of cell-cell signalling pathways such as Notch fosters a partial or complete EMT, yet the mechanisms enabling cluster formation remain poorly understood. Using an integrated computational-experimental approach, we examine the role of Numb-an inhibitor of Notch intercellular signalling-in mediating EMT and clusters formation...
November 2017: Journal of the Royal Society, Interface
Izabela Linha Secco, Taine Costa, Etiene Letícia Leone de Moraes, Márcia Helena de Souza Freire, Mitzy Tannia Reichembach Danski, Regina Paula Guimarães Vieira Cavalcante
OBJECTIVE: To report a case of neonatal appendicitis in a children's hospital in southern Brazil, demonstrating the impact on neonatal survival. METHOD: Case study with data collection from medical records, approved by the Institution and Ethics Committee for Research with Human Beings. RESULTS: The clinical picture is initially characterized by food intolerance, evolving to hypoactivity, alteration of vital signs and septicemia due to intestinal perforation...
November 2017: Revista Brasileira de Enfermagem
Pegah Mehrpouya-Bahrami, Kumaraswamy Naidu Chitrala, Mitra S Ganewatta, Chuanbing Tang, E Angela Murphy, Reilly T Enos, Kandy T Velazquez, Jamie McCellan, Mitzi Nagarkatti, Prakash Nagarkatti
Obesity is characterized by chronic low-grade, systemic inflammation, altered gut microbiota, and gut barrier disruption. Additionally, obesity is associated with increased activity of endocannabinoid system (eCB). However, the clear connection between gut microbiota and the eCB system in the regulation of energy homeostasis and adipose tissue inflammation and metabolism, remains to be established. We investigated the effect of treatment of mice with a cannabinoid receptor 1 (CB1) antagonist on Diet-Induced Obesity (DIO), specifically whether such a treatment that blocks endocannabinoid activity can induce changes in gut microbiota and anti-inflammatory state in adipose tissue...
November 15, 2017: Scientific Reports
Dana L Rosado, Susan Buehler, Emilie Botbol-Berman, Maia Feigon, Adeline León, Hien Luu, Carmen Carrión, Mitzi Gonzalez, Julia Rao, Taylor Grief, Michael Seidenberg, Neil H Pliskin
OBJECTIVE: In more recent years, studies have begun to examine levels of satisfaction of individuals or family members of individuals who undergo neuropsychological evaluation. However, to date there have been only a handful of formal studies that have specifically examined the role and contribution of neuropsychological assessment in patient care and management. This study sought to examine one specific component of neuropsychological assessment, namely the impact of patient feedback regarding neuropsychological testing on patient outcome...
November 8, 2017: Clinical Neuropsychologist
Hyuckjoon Kang, Youngsook L Jung, Kyle A McElroy, Barry M Zee, Heather A Wallace, Jessica L Woolnough, Peter J Park, Mitzi I Kuroda
Regulatory decisions in Drosophila require Polycomb group (PcG) proteins to maintain the silent state and Trithorax group (TrxG) proteins to oppose silencing. Since PcG and TrxG are ubiquitous and lack apparent sequence specificity, a long-standing model is that targeting occurs via protein interactions; for instance, between repressors and PcG proteins. Instead, we found that Pc-repressive complex 1 (PRC1) purifies with coactivators Fs(1)h [female sterile (1) homeotic] and Enok/Br140 during embryogenesis. Fs(1)h is a TrxG member and the ortholog of BRD4, a bromodomain protein that binds to acetylated histones and is a key transcriptional coactivator in mammals...
October 1, 2017: Genes & Development
Daniela Dezzutto, Raffaella Barbero, Giuseppina Canale, Pier Luigi Acutis, Cristina Biolatti, Andrea Dogliero, Mauthe Degerfeld Mitzy, Paola Francone, Alberto Colzani, Stefania Bergagna, Maria Silvia Gennero
Urban parks are green areas of cities where families and children spend hours outside. Turtles often inhabit urban parks. However, even if the animals seem harmless, they may serve as both reservoirs or accidental hosts for different serotypes of Leptospira spp. Leptospira spp. is a waterborne zoonotic bacterium relevant for public health. Reptiles and amphibians may play a role in the epidemiology, transmission, and persistence of Leptospira spp. In the present study, we observed the presence of anti-leptospiral agglutinins in a group of freshwater turtles (Trachemys scripta) captured in three urban ponds of the metropolitan city of Turin, Italy...
October 10, 2017: Veterinary Sciences
Barbara E Adams, Peter D Peng, Mitzi L Williams
The purpose of the present study was to review the outcomes and assess the prognostic factors associated with foot melanoma. We hypothesized that primary melanoma of the foot would be more likely to present at an advanced stage and be associated with poorer outcomes. Both univariate and multivariate analyses were conducted to examine the relationships between patients' demographic, clinical, and pathologic characteristics and deaths within 5 years. Categorical data were summarized as frequencies and percentages and continuous variables as mean ± standard deviation...
January 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
Ariya Chindamporn, Arunaloke Chakrabarti, Ruoyu Li, Pei-Lun Sun, Ban-Hock Tan, Mitzi Chua, Retno Wahyuningsih, Atul Patel, Zhengyin Liu, Yee-Chun Chen, Methee Chayakulkeeree
An online survey of mycology laboratories in seven Asian countries was conducted to assess the status, competence, and services available. Country representatives from the Asia Fungal Working Group (AFWG) contacted as many laboratories performing mycology diagnosis as possible in their respective countries, requesting that the laboratory heads complete the online survey. In total, 241 laboratories responded, including 71 in China, 104 in India, 11 in Indonesia, 26 in the Philippines, four in Singapore, 18 in Taiwan, and seven in Thailand...
September 20, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
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