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Current Molecular Medicine

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https://www.readbyqxmd.com/read/28429673/hydroxytyrosol-attenuates-lps-induced-acute-lung-injury-in-mice-by-regulating-autophagy-and-sirtuin-expression
#1
X Yang, T Jing, Y Li, Y He, B Wang, W Zhang, Y Xiao, W Wang, J Zhang, J Wei, R Lin
BACKGROUND: Recently, the effects of hydroxytyrosol on autophagy during acute lung injury (ALI) have drawn increasing attention. OBJECTIVE: We explored the underlying molecular mechanisms by which hydroxytyrosol exerts its anti-inflammatory effects in a murine model of ALI by up-regulating autophagy. METHODS: Male BALB/c mice, challenged with intranasal instillations of LPS, were treated with or without hydroxytyrosol (HT, 100 mg/kg, intragastrically) 1 h prior to LPS exposure...
April 21, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28429672/the-molecular-mechanisms-of-thalidomide-teratogenicity-and-implications-for-modern-medicine
#2
J Knobloch, D Jungck, A Koch
Thalidomide is a teratogen that affects many organs but primarily induces limb truncations like phocomelia. Rodents are thalidomide resistant. In the 1950s, this has led to misinterpretations of animal tests and to the fatal assumption that the drug was safe for pregnant women to use against morning sickness. The result was one of the biggest scandals in medical history: 10.000 and more infants with birth defects in Europe. Nonetheless, thalidomide still has its place in modern medicine as it has strong therapeutic potential: it has been approved by the FDA for multiple myeloma and erythema nodosum leprosum, and its anti-inflammatory, immunomodulatory and anti-angiogenic activities are considered in many other refractory diseases...
March 31, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28429671/ethanolamine-metabolism-in-the-mammalian-gastrointestinal-tract-mechanisms-patterns-and-importance
#3
J Zhou, X Xiong, K Wang, L Zou, D Lv, Y Yin
Nutritional exchanges and cooperation between bacteria in the gastrointestinal tract and the mammalian host play an important role in health and disease. Ethanolamine is an essential dietary lipid nutrient for animals and is abundant in both intestinal and bacterial cell membranes. Ethanolamine can be utilized by intestinal eukaryotic cells via the cytidine phosphoethanolamine pathway for de novo synthesis of phosphatidylethanolamine, and certain bacteria are able to catabolize it as a major carbon and/or nitrogen source with the help of ethanolamine utilization proteins...
March 31, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28429670/expression-of-dominant-negative-k6w-ubiquitin-in-the-lens-epithelium-via-an-adenoviral-vector-delays-posterior-capsule-opacification-in-a-rabbit-model
#4
Xuan Bao, Min Hou, Ruiping Peng, Furong Luo, Mingxing Wu
PURPOSE: Ubiquitin is involved in cell proliferation and differentiation, and the objective of this study is to investigate the potential of dominant negative Ubiquitin (Ub) with a lysine to tryptophan mutation at the 6 position (K6W) through an adenoviral expression vector in the prevention of posterior capsule opacification (PCO) in a rabbit PCO model. METHODS: Recombinant dominant negative K6W-Ub adenovirus (RAd-K6W-Ub) with green fluorescent protein (RAd-K6W-Ub/GFP) and RAd-GFP viruses (control) were generated with QBI-HEK 293A cells...
March 31, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28429669/what-can-pharmacological-models-of-retinal-degeneration-tell-us
#5
M H Reisenhofer, J Balmer, V Enzmann
Animal models with pharmacologically induced retinal degeneration including sodium iodate (NaIO3) and N-methyl-N-nitrosourea (MNU) have been extensively used in ophthalmic research to investigate retinal degeneration. NaIO3 induces degeneration of the retinal pigment epithelium (RPE) followed by photoreceptor (PRC) cell death, mimicking features of age-related macular degeneration. In contrast, MNU leads to rapid destruction of the PRCs only, enabling the use of the MNU model to investigate degeneration induced in retinitis pigmentosa...
March 31, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28429668/the-role-of-mitochondria-associated-reactive-oxygen-species-in-the-amyloid-%C3%AE-induced-production-of-angiogenic-factors-by-arpe-19-cells
#6
L Wu, X Tan, L Liang, H Yu, C Wang, D Zhang, A Kijlstra, P Yang
OBJECTIVE: This study aimed to investigate the mechanisms whereby Amyloid-beta (Aβ) induces the production of angiogenic factors by a human retinal pigment epithelial cell line (ARPE-19) cells. METHODS: ARPE-19 cells obtained from the American Type Culture Collection (ATCC) were utilized in this study. The expression level of vascular endothelial growth factor (VEGF), Interleukin-8 (IL-8), monocyte chemoattractant protein-1 (MCP-1) and complement activation fragments C3a and C5a were measured by Real-time quantitative PCR (RT-PCR) and Enzyme-linked immunosorbent assay (ELISA)...
March 31, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28266275/molecular-basis-of-human-diseases-and-targeted-therapy-based-on-small-molecule-inhibitors-of-er-stress-induced-signaling-pathways
#7
W Rozpędek, A Nowak, D Pytel, J Alan Diehl, I Majsterek
The Endoplasmic Reticulum (ER) provides a conserved protein quality control system and plays a fundamental role in cell growth and homeostasis. Disturbances in the ER homeostasis may originate especially from hypoxia, glucose deficiency, presence of mutant proteins, that directly impair protein folding capacity and after deposition of unfolded and misfolded proteins within ER lumen trigger ER stress conditions. That subsequently activates the Unfolded Protein Response (UPR) branches, which has a dual pro-adaptive or pro-apoptotic role dependently on severity and time of duration of ER stress conditions...
March 6, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28260505/copy-number-variations-with-isolated-fetal-ventriculomegaly
#8
P Hu, Y Wang, R Sun, L Cao, X Chen, C Liu, C Luo, D Ma, W Wang, X Fu, W Shi, S Yi, K Zhang, H Liu, Z Xu
BACKGROUND: Copy Number Variations (CNVs) are an important genetic cause of a number of neurodevelopmental disorders (NDs). However, the association between CNVs and the development and prognosis of isolated fetal ventriculomegaly (IMV) is unclear. OBJECTIVES: To investigate possible associations between CNVs and the development of fetal IMV. METHODS: This retrospective study recruited 154 subjects with ultrasound-confirmed fetal IMV and 190 subjects in a control cohort who underwent a high-risk prenatal serum screening program...
March 3, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28231755/the-immune-function-of-ly6chi-inflammatory-monocytes-during-infection-and-inflammation
#9
L Liu, Y Wei, X Wei
Monocytes originate from progenitors in bone marrow and circulate through blood vessels and patrol the vascular endothelium or differentiate into mononuclear phagocytes and infiltrate via the bloodstream to peripheral tissues during infection and other inflammatory conditions. Recruitment of inflammatory monocytes is essential for effectively clearance of bacteria, control of Toxoplasma gondii infections and limiting tissue damage. Unexpectedly, Ly6Chiinflammatory monocytes acquire the inflammatory regulatory capacity dual phenotypes during acute infection and inflammation...
February 19, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28231754/survival-and-immunosuppression-induced-by-hepatocyte-growth-factor-in-chronic-lymphocytic-leukemia
#10
P Giannoni, G Cutrona, D de Totero
Chronic lymphocytic leukemia (CLL), the most common leukemia among adults in the western world, is characterized by a progressive accumulation of relatively mature CD5+ B cells in peripheral blood, lymph nodes and bone marrow. Despite much recent advancement in therapy, CLL is still incurable. Lymph nodes and bone marrow represent sanctuary sites preserving leukemic cells from spontaneous or drug-induced apoptosis, and infiltration of leukemic cells in these districts correlates with clinical stages and prognosis...
February 19, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28231753/prion-function-and-pathophysiology-in-non-mammalian-models
#11
N Guerrero, M M Meynard, J Borgonovo, K Palma, M L Concha, C Hetz
More than thirty years have passed since the discovery of the prion protein (PrP) and its causative role in transmissible spongiform encephalopathy. Since a combination of both gain- and loss-of-function mechanisms may underlay prion pathogenesis, understanding its physiological role may give important clues about disease mechanisms. Historically, the primary strategy for prion research has involved the use of human tissue, cell cultures and mammalian animal models. Nevertheless, experimental difficulties of in vivo studies and some controversial observations obtained in these systems have triggered the search for alternative animal models...
February 19, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28231752/decreased-hoxd10-expression-promotes-a-proliferative-and-aggressive-phenotype-in-prostate-cancer
#12
R-J Mo, J-M Lu, Y-P Wan, W Hua, Y-X Liang, Y-J Zhuo, Q-W Kuang, Y-L Liu, H-C He, W-D Zhong
HoxD10 gene plays a critical role in cell proliferation in the process of tumor development. However, the protein expression level and the function of HoxD10 in prostate cancer remain unknown. Using tissue microarray, we demonstrate that the protein expression of HoxD10 is commonly decreased in prostate cancer tissues (n = 92) compared to adjacent benign prostate tissues (n = 77). Functionally, knockdown of HoxD10 resulted in significant promotion of prostate cancer cell proliferation. Moreover, knockdown of HoxD10 strikingly stimulated prostate tumor growth in a mouse xenograft model...
February 19, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28231751/molecular-determinants-for-stim1-activation-during-store-operated-ca2-entry
#13
G Ma, S Zheng, Y Ke, L Zhou, L He, Y Huang, Y Wang, Y Zhou
BACKGROUND: STIM/ORAI-mediated store-operated Ca2+ entry (SOCE) mediates a myriad of Ca2+-dependent cellular activities in mammals. Genetic defects in STIM1/ORAI1 lead to devastating severe combined immunodeficiency; whereas gain-of-function mutations in STIM1/ORAI1 are intimately associated with tubular aggregate myopathy. At molecular level, a decrease in the Ca2+ concentrations within the lumen of endoplasmic reticulum (ER) initiates multimerization of the STIM1 luminal domain to switch on the STIM1 cytoplasmic domain to engage and gate ORAI channels, thereby leading to the ultimate Ca2+ influx from the extracellular space into the cytosol...
February 19, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28231750/molecular-determinants-of-colon-cancer-susceptibility-in-the-east-and-west
#14
W M Abdel-Rahman, M E Faris, P Peltomäki
The currently available knowledge of factors that dictate the development and progression as well as the clinical outcome of colorectal cancers (CRC) is mainly derived from Western countries. Considerable number of publications document different incidence rates and contrasting clinical features of CRC in various groups such as the differences between urban vs. rural areas, young vs. old age and the East vs. the West. In particular, Egyptian CRC is a surprisingly young age disease with higher proportion of poorly differentiated and advanced stage cancers as compared to the Western counterparts...
February 19, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28190385/evidence-of-pkc-binding-and-translocation-to-explain-the-anticancer-mechanism-of-chlorogenic-acid-in-breast-cancer-cells
#15
S J Deka, S Gorai, D Manna, V Trivedi
Chlorogenic acid (CGA) exhibits potentials towards liver, breast and skin cancer. Cancer cells stimulated with CGA exhibits differential expression of transcriptional factors and regulatory molecules but the molecular target of the molecule is not known. Superposition of biophoric elements of CGA with Curcumin gives maximum common substructure score of 0.90. Molecular modeling studies further suggest that CGA fits into the C1b domain of PKC with extensive interaction with residues lining binding site. It binds PKC in a concentration dependent manner with dissociation constant KD, 28...
February 9, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28176628/diabetes-type-4-a-paradigm-shift-in-the-understanding-of-glaucoma-the-brain-specific-diabetes-and-the-candidature-of-insulin-as-a-therapeutic-agent
#16
M A Faiq, T Dada
The present analytical anecdote aims at construing the probable mechanism and ensuing applications of the "Brain Diabetes Hypothesis of Glaucoma" proposed by our research group in early 2014. Here we go a step further to look into many important mechanisms that serve to bridge conceptual gaps to fill up the mosaic of a picture revealing that glaucoma indeed is brain specific diabetes and more appropriately "Diabetes Type 4". Based on this conceptual substance, we weave a novel idea of insulin being a potential remedy for glaucoma...
February 6, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28067171/molecular-cloning-and-developmental-expression-patterns-of-the-striatin-gene-encoding-a-member-of-the-regulatory-subunits-for-the-protein-serine-threonine-phosphatase-2a-in-fish
#17
S-S Xie, Z-W Luo, F-Y Liu, L Liu, Z Chen, J-W Xiang, T-H Yang, R-L Qi, Y Yang, Q Nie, L Wang, Z Huang, X-H Hu, Y-F Liu, Q Sun, Y Xiao, W-J Qing, W-B Liu, Y-Z Liu, D-Y Zhang, D W-C Li
The protein phosphatase-2A (PP-2A) is one of the most important serine/threonine phosphatases in eukaryotes. The holoenzyme of PP-2A consists of three subunits: a scaffold A subunit, a catalytic C subunit and a regulatory B subunit. While both A and C subunits are coded by two different genes, the B subunits exist in 26 or more isoforms which are encoded by at least 15 different genes. Previous studies have shown that besides regulating specific PP-2A activity, the various B subunits may have other functions...
January 9, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28067170/editorial-roles-of-sumoylation-and-phosphorylation-in-normal-physiology-and-human-diseases
#18
David W Li
No abstract text is available yet for this article.
January 9, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28067169/sumoylation-in-lens-differentiation-and-pathogenesi
#19
J-W Xiang, Z-G Chen, L Gong, Y Xiao, W-J Qing, L Wang, X-H Hu, Z-X Huang, R-L Qi, T-H Yang, A-P Arrigo, L Zhang, X-C Tang, S Huang, F-Y Liu, Z-W Luo, Y-F Liu, Q Sun, J Gigantelli, Y-Z Liu, D W-C Li
Sumoylation, a post-translational modification discovered over a decade ago, turns out to be a very important regulatory mechanism mediating multiple cellular processes. Recent studies from our laboratory and others also revealed that it plays a crucial role in regulating both differentiation and pathogenesis of the ocular lenses. This review will summarize these progresses.
January 9, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28067168/sumoylation-in-neurological-diseases
#20
F-Y Liu, Y-F Liu, Y Yang, Z-W Luo, J-W Xiang, Z-G Chen, R-L Qi, T-H Yang, Y Xiao, W-J Qing, D W-C Li
Since the discovery of SUMOs (small ubiquitin-like modifiers) over 20 years ago, sumoylation has recently emerged as an important post-translational modification involved in almost all aspects of cellular physiology. In neurons, sumoylation dynamically modulates protein function and consequently plays an important role in neuronal maturation, synapse formation and plasticity. Thus, the dysfunction of sumoylation pathway is associated with many different neurological disorders. Hundreds of different proteins implicated in the pathogenesis of neurological disorders are SUMO-modified, indicating the importance of sumoylation involved in the neurological diseases...
January 9, 2017: Current Molecular Medicine
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