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https://www.readbyqxmd.com/read/29334613/reduced-mir-144-3p-expression-in-serum-and-bone-mediates-osteoporosis-pathogenesis-by-targeting-rank
#1
Chunqing Wang, Hanliang He, Yu Jiang, Liang Wang, Youjia Xu
Osteoblasts and osteoclasts are responsible for the formation and resorption of bone, respectively. An imbalance between these two processes results in a disease called osteoporosis, in which a decreased level of bone strength increases the risk of a bone fracture. MicroRNAs (miRNAs) are small non-coding RNA molecules of 18-25 nucleotides that have been previously shown to control bone metabolism by regulating osteoblast and osteoclast differentiation. In the present study, we detected the expression pattern of 10 miRNAs in patient serum samples, and identified six miRNAs altered expression in patients with osteoporosis relative to non-osteoporosis...
January 15, 2018: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29334543/seminoma-metastatic-to-the-orbit
#2
Jonathan J Dutton, Alan D Proia
PURPOSE: Seminomas are solid tumors in young men, but which rarely metastasize to the orbit. The authors review the known literature on seminoma metastatic to the orbit, and describe an additional case in a 33-year-old man. METHODS: A literature search was performed on the MEDLINE database using keywords "seminoma," "testicular germ-cell tumors," "testicular cancer," "testicular neoplasm," "orbital metastasis," and "germ-cell neoplasms." RESULTS: Malignant neoplasms of the testis account for only 1% of cancers in men...
January 12, 2018: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29334314/on-the-intrinsic-constraint-of-bacterial-growth-rate-m-tuberculosis-s-view-of-the-protein-translation-capacity
#3
Manlu Zhu, Xiongfeng Dai
In nature, the maximal growth rates vary widely among different bacteria species. Fast-growing bacteria species such as Escherichia coli can have a shortest generation time of 20 min. Slow-growing bacteria species are perhaps best known for Mycobacterium tuberculosis, a human pathogen with a generation time being no less than 16 h. Despite of the significant progress made on understanding the pathogenesis of M. tuberculosis, we know little on the origin of its intriguingly slow growth. From a global view, the intrinsic constraint of the maximal growth rate of bacteria remains to be a fundamental question in microbiology...
January 15, 2018: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/29334313/pneumonia-infection-in-mice-reveals-the-involvement-of-the-feoa-gene-in-the-pathogenesis-of-acinetobacter-baumannii
#4
Laura Álvarez-Fraga, Juan C Vázquez-Ucha, Marta Martínez-Guitián, Juan A Vallejo, Germán Bou, Alejandro Beceiro, Margarita Poza
Acinetobacter baumannii has emerged in the last decade as an important nosocomial pathogen. To identify genes involved in the course of a pneumonia infection, gene expression profiles were obtained from A. baumannii ATCC 17978 grown in mouse infected lungs and in culture medium. Gene expression analysis allowed us to determine a gene, the A1S_0242 gene (feoA), over-expressed during the pneumonia infection. In the present work, we evaluate the role of this gene, involved in iron uptake. The inactivation of the A1S_0242 gene resulted in an increase susceptibility to oxidative stress and a decrease in biofilm formation, in adherence to A549 cells and in fitness...
January 15, 2018: Virulence
https://www.readbyqxmd.com/read/29334302/mirnas-as-potential-regulators-of-mtor-pathway-in-renal-cell-carcinoma
#5
Inês Nogueira, Francisca Dias, Ana Luísa Teixeira, Rui Medeiros
Renal cell carcinoma (RCC) is the most commonly occurring solid cancer of the adult kidney with the majority of RCC cases being detected accidentally. The most aggressive subtype is clear cell RCC (ccRCC). miRNAs, a family of small noncoding RNAs regulating gene expression have been identified as key biological modulators. The von Hippel-Lindau pathway is one of the signaling pathways involved in the pathophysiology of ccRCC. Another oncogenic mechanism involves the activation of PI3K/AKT/mTOR signaling and serves as a central regulator of cell metabolism, proliferation and survival...
January 15, 2018: Pharmacogenomics
https://www.readbyqxmd.com/read/29334288/targeted-anti-il-13-therapies-in-asthma-current-data-and-future-perspectives
#6
Polyxeni Ntontsi, Evgenia Papathanassiou, Stelios Loukides, Petros Bakakos, Georgios Hillas
Introduction The identification of patients with severe asthma who will benefit from a personalized management approach remains an unmet need. Interleukin-13 (IL-13) is a cytokine possessing a significant role in asthma pathogenesis and progression of disease. Humanised monoclonal antibodies against IL-13 and IL-13 and IL-4 receptors are mainly proposed as add-on therapy in patients with TH2-high inflammation with uncontrolled asthma despite maximum therapy. Areas covered The role of IL-13 in airway inflammation in severe asthma, the targeted anti-IL-13 therapies and biomarkers that predict response to anti-IL-13 treatment are discussed...
January 15, 2018: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/29334249/antimicrobial-activity-of-1-3-4-oxadiazole-derivatives-against-planktonic-cells-and-biofilm-of-staphylococcus-aureus
#7
Zhaojun Zheng, Qingzhong Liu, Wooseong Kim, Nagendran Tharmalingam, Beth Burgwyn Fuchs, Eleftherios Mylonakis
AIM:  Staphylococcus aureus is a major cause of severe hospital-acquired infections, and biofilm formation is an important part of staphylococcal pathogenesis. Therefore, developing new antimicrobial agents against both planktonic cells and biofilm of S. aureus is a major challenge. RESULTS: Three 1,3,4-oxadiazole derivatives exhibited antimicrobial activity against seven S. aureus strains in vitro, with minimum inhibitory concentrations ranging from 4 to 32 μg/ml...
January 15, 2018: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/29334206/decreased-expression-of-arginine-phenylalanine-amide-related-peptide-3-gene-in-dorsomedial-hypothalamic-nucleus-of-constant-light-exposure-model-of-polycystic-ovarian-syndrome
#8
Zahra Shaaban, Mohammad Reza Jafarzadeh Shirazi, Mohammad Hossein Nooranizadeh, Amin Tamadon, Farhad Rahmanifar, Somayeh Ahmadloo, Amin Ramezani, Mohammad Javad Zamiri, Iman Razeghian Jahromi, Fatemeh Sabet Sarvestani, Omid Koohi Hosseinabadi
Background: An abnormality in pulse amplitude and frequency of gonadotropin releasing hormone (GnRH) secretion is the most characteristics of polycystic ovarian syndrome (PCOS). On the other hand, arginine-phenylalanine-amide (RFamide)-related peptide-3 (RFRP3) inhibits the secretion of GnRH in mammalian hypothalamus. The current study performed in order to investigate the expression of RFRP3 mRNA in the dorsomedial hypothalamic nucleus (DMH) after the induction of PCOS in a rat model of constant light exposure, and the possible role of parity on occurrence of PCOS...
April 2018: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/29334195/exoproteome-profiling-reveals-the-involvement-of-the-foldase-prsa-in-the-cell-surface-properties-and-pathogenesis-of-staphylococcus-aureus
#9
Mei-Hui Lin, Chi-Chun Li, Jwu-Ching Shu, Hao-Wei Chu, Chao-Chin Liu, Chih-Ching Wu
Staphylococcus aureus is a bacterial pathogen that produces and exports many virulence factors that cause diseases in human. PrsA, a membrane-bound foldase, is expressed ubiquitously in Gram-positive bacteria and required for the folding of exported proteins into a stable and active structure. To understand the involvement of PrsA in post-translocational protein folding in S. aureus, a PrsA-deficient mutant of S. aureus HG001 was constructed. Using isobaric tags for relative and absolute quantification (iTRAQ)-based mass spectrometry analyses, the exoproteomes of PrsA mutant and wild type S...
January 15, 2018: Proteomics
https://www.readbyqxmd.com/read/29333925/androgen-receptor-independent-prostate-cancer-an-emerging-clinical-entity
#10
Ilyas Sahin, Anthony E Mega, Benedito A Carneiro
Androgen deprivation therapy remains the backbone of prostate cancer treatment given its pivotal role in the pathogenesis of prostate cancer. The growing knowledge of androgen receptor-independent (i.e. AR-null) prostate cancer cells, however, might advance the treatment paradigm of prostate cancer particularly in castration resistance stage by targeting these pathways. Here, we examined the results of two recent studies, published in Cancer Cell by Bluemn and Shukla et al., and possible clinical impact of these studies in the near future in castration resistance prostate cancer...
January 15, 2018: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29333782/-research-advances-on-the-molecular-mechanism-of-autophagy-regulated-by-porphyromonas-gingivalis
#11
Zhao Yan, Yu Yang, Kou Yurong
Autophagy is an intracellular conservative degradation pathway. This event has been considered as a key step in host defense against bacterial infection. However, Porphyromonas gingivalis, as one of the evidence-sufficient periodontal pathogens, can utilize self-induced autophagy to achieve persistent intracellular survival and proliferation, which enable this organism to escape from host immune surveillance. This review focuses on molecular mechanism of P. gingivalis internalization and autophagy to illuminate its pathogenesis and to further explore the relationship between P...
December 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/29333578/insulin-resistance-and-bone-a-biological-partnership
#12
Caterina Conte, Solomon Epstein, Nicola Napoli
Despite a clear association between type 2 diabetes (T2D) and fracture risk, the pathogenesis of bone fragility in T2D has not been clearly elucidated. Insulin resistance is the primary defect in T2D. Insulin signalling regulates both bone formation and bone resorption, but whether insulin resistance can affect bone has not been established. On the other hand, evidence exists that bone might play a role in the regulation of glucose metabolism. This article reviews the available experimental and clinical evidence on the interplay between bone and insulin resistance...
January 15, 2018: Acta Diabetologica
https://www.readbyqxmd.com/read/29333402/interleukin-1b-il-1b-31-and-il-1b-511-and-interleukin-1-receptor-antagonist-il-1ra-gene-polymorphisms-in-primary-immune-thrombocytopenia
#13
Deependra Kumar Yadav, Anil Kumar Tripathi, Divya Gupta, Saurabh Shukla, Aloukick Kumar Singh, Ashutosh Kumar, Jyotsna Agarwal, K N Prasad
Background: Immune thrombocytopenia (ITP) is an immune-mediated disease caused by autoantibodies against platelets membrane glycoproteins GPIIb/IIIa and GPIb/IX. The etiology of ITP remains unclear. This study evaluated the association of polymorphisms in interleukin (IL)-1B-31, IL-1B-511, and IL-1Ra with ITP. Methods: Genotyping of IL-1B-31, IL-1B-511, and IL-1Ra was performed in 118 ITP patients and 100 controls by polymerase chain reaction restriction fragment length polymorphism and detection of variable number tandem repeats...
December 2017: Blood Research
https://www.readbyqxmd.com/read/29333363/creating-a-multi-center-rare-disease-consortium-the-consortium-of-eosinophilic-gastrointestinal-disease-researchers-cegir
#14
Katherine Cheng, Sandeep K Gupta, Susanna Kantor, Jonathan T Kuhl, Seema S Aceves, Peter A Bonis, Kelley E Capocelli, Christina Carpenter, Mirna Chehade, Margaret H Collins, Evan S Dellon, Gary W Falk, Rashmi Gopal-Srivastava, Nirmala Gonsalves, Ikuo Hirano, Eileen C King, John Leung, Jeffrey P Krischer, Vincent A Mukkada, Alain Schoepfer, Jonathan M Spergel, Alex Straumann, Guang-Yu Yang, Glenn T Furuta, Marc E Rothenberg
 Eosinophilic gastrointestinal disorders (EGIDs) affect various segments of the gastrointestinal tract. Since these disorders are rare, collaboration is essential to enroll subjects in clinical studies and study the broader population. The Rare Diseases Clinical Research Network (RDCRN), a program of the National Center for Advancing Translational Sciences (NCATS), funded the Consortium of Eosinophilic Gastrointestinal Disease Researchers (CEGIR) in 2014 to advance the field of EGIDs. CEGIR facilitates collaboration among various centers, subspecialties, patients, professional organizations and patient-advocacy groups and includes 14 clinical sites...
December 18, 2017: Translational Science of Rare Diseases
https://www.readbyqxmd.com/read/29333268/progress-of-genome-wide-association-studies-of-ankylosing-spondylitis
#15
REVIEW
Zhixiu Li, Matthew A Brown
Ankylosing spondylitis (AS) is an immune-mediated arthritis which primarily affects the spine and sacroiliac joints. Significant progress has been made in discovery of genetic associations with AS by genome-wide association studies (GWAS) over past decade. These findings have uncovered novel pathways involved pathogenesis of the disease and have led to introduction of novel therapeutic treatments for AS. In this Review, we discuss the genetic variations associated with AS identified by GWAS, the major pathways revealed by these AS-associated variations and critical cell types involved in AS development...
December 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/29333267/type-1-diabetes-genome-wide-association-studies-not-to-be-lost-in-translation
#16
REVIEW
Flemming Pociot
Genetic studies have identified >60 loci associated with the risk of developing type 1 diabetes (T1D). The vast majority of these are identified by genome-wide association studies (GWAS) using large case-control cohorts of European ancestry. More than 80% of the heritability of T1D can be explained by GWAS data in this population group. However, with few exceptions, their individual contribution to T1D risk is low and understanding their function in disease biology remains a huge challenge. GWAS on its own does not inform us in detail on disease mechanisms, but the combination of GWAS data with other omics-data is beginning to advance our understanding of T1D etiology and pathogenesis...
December 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/29333085/next-generation-sequencing-expression-profiling-of-mitochondrial-subunits-in-men-with-klinefelter-syndrome
#17
Michele Salemi, Laura Cimino, Marika Marino, Rossella Cannarella, Rosita A Condorelli, Corrado Romano, Sandro La Vignera, Aldo E Calogero
Objectives: Klinefelter syndrome (KS) is one of the most common sex-chromosome disorders as it affects up to 1 in every 600-1000 newborn males. Men with KS carry one extra X chromosome and they usually present a 47,XXY karyotype, but less frequent variants have also been reported in literature. KS typical symptoms include tall stature, gynecomastia, broad hips, hypogonadism and absent spermatogenesis. The syndrome is also related to a wide range of cognitive deficits, among which language-based learning disabilities and verbal cognition impairment are frequently diagnosed...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29333067/complications-of-staple-line-and-anastomoses-following-laparoscopic-bariatric-surgery
#18
REVIEW
Gianfranco Silecchia, Angelo Iossa
With over 600 million people being obese, and given the scientific demonstration of the advantages of surgical treatment, bariatric surgery is on the rise. The promising long-term results in terms of weight loss, and particularly in relation to comorbidities and the control/cure rate, mean that the number of procedures performed in all countries remains high. However, the risk of potentially complex or fatal complications, though small, is present and is related to the procedures per se. This review is a guide for bariatric and/or general surgeons, offering a complete overview of the pathogenesis of anastomosis and staple line following the most common laparoscopic bariatric procedures: sleeve gastrectomy, gastric bypass, and mini-gastric bypass...
January 2018: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/29333066/new-insights-into-cholangiocarcinoma-multiple-stems-and-related-cell-lineages-of-origin
#19
REVIEW
Maria Consiglia Bragazzi, Lorenzo Ridola, Samira Safarikia, Sabina Di Matteo, Daniele Costantini, Lorenzo Nevi, Vincenzo Cardinale
Cholangiocarcinoma (CCA) is a heterogeneous group of malignancies that may develop at any level of the biliary tree. CCA is currently classified into intrahepatic (iCCA), perihilar (pCCA) and distal (dCCA) on the basis of its anatomical location. Notably, although these three CCA subtypes have common features, they also have important inter- and intra-tumor differences that can affect their pathogenesis and outcome. A unique feature of CCA is that it manifests in the hepatic parenchyma or large intrahepatic and extrahepatic bile ducts, furnished by two distinct stem cell niches: the canals of Hering and the peribiliary glands, respectively...
January 2018: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/29333004/drosha-rs642321-polymorphism-influence-susceptibility-to-childhood-acute-lymphoblastic-leukemia-a-preliminary-report
#20
Mohammad Hashemi, Seyed-Shahaboddin Hasani, Majid Naderi
Introduction: It has been well known that the microRNA biogenesis is involved in the pathogenesis of various diseases. We investigated the possible association between DROSHA rs642321 variant and risk of acute lymphocytic leukemia (ALL). Materials and Methods: We genotyped 75 children diagnosed with ALL and 115 age- and sex-matched children with no history of cancer of any type (as the control group) by the tetra amplification refractory mutation system-polymerase chain reaction...
October 2017: Indian Journal of Medical and Paediatric Oncology
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