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https://www.readbyqxmd.com/read/29024578/morpho-functional-features-of-the-gonads-of-danio-rerio-the-role-of-brain-derived-neurotrophic-factor
#1
Pietro Cacialli, Livia D'Angelo, Paolo de Girolamo, Luigi Avallone, Carla Lucini, Elisabeth Pellegrini, Luciana Castaldo
Zebrafish, a suitable and widely used teleost fish model in basic biomedical research, displays morphophysiological features of adult gonads that share some commonalities with those of mammalian species. In mammals, gametogenesis is regulated, among several factors, by brain derived neurotrophic factor (BDNF). This neurotrophin has a well-established role in the developing and adult nervous system, as well as gonads development and functions in vertebrates pecies. We hypothesize that BDNF has a role also in the gonadal functions of zebrafish...
October 12, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29022899/transplanted-human-p75-positive-stem-leydig-cells-replace-disrupted-leydig-cells-for-testosterone-production
#2
Min Zhang, Jiancheng Wang, Chunhua Deng, Mei Hua Jiang, Xin Feng, Kai Xia, Weiqiang Li, Xingqiang Lai, Haipeng Xiao, Ren-Shan Ge, Yong Gao, Andy Peng Xiang
Previous studies have demonstrated that rodent stem Leydig cell (SLC) transplantation can partially restore testosterone production in Leydig cell (LC)-disrupted or senescent animal models, which provides a promising approach for the treatment of hypogonadism. Here, we isolated human SLCs prospectively and explored the potential therapeutic benefits of human SLC transplantation for hypogonadism treatment. In adult human testes, p75 neurotrophin receptor positive (p75(+)) cells expressed the known SLC marker nestin, but not the LC lineage marker hydroxysteroid dehydrogenase-3β (HSD3β)...
October 12, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28979360/implication-of-the-neurotrophin-receptor-p75-ntr-in-vascular-diseases-beyond-the-eye
#3
Sally L Elshaer, Azza B El-Remessy
INTRODUCTION: The p75 neurotrophin receptor (p75(NTR)) is a member of TNF-α receptor superfamily that bind all neurotrophins, mainly regulating their pro-apoptotic actions. Ischemia is a common pathology in different cardiovascular diseases affecting multiple organs, however the contribution of p75(NTR) remains not fully addressed. The aim of this work is to review the current evidence through published literature studying the impact of p75(NTR) receptor in ischemic vascular diseases...
2017: Expert Review of Ophthalmology
https://www.readbyqxmd.com/read/28979244/lactobacillus-casei-bl23-produces-microvesicles-carrying-proteins-that-have-been-associated-with-its-probiotic-effect
#4
A Paula Domínguez Rubio, Jimena H Martínez, Diana C Martínez Casillas, Federico Coluccio Leskow, Mariana Piuri, Oscar E Pérez
Archaea, bacteria, and eukarya secrete membrane microvesicles (MVs) as a mechanism for intercellular communication. We report the isolation and characterization of MVs from the probiotic strain Lactobacillus casei BL23. MVs were characterized using analytical high performance techniques, DLS, AFM and TEM. Similar to what has been described for other Gram-positive bacteria, MVs were on the nanometric size range (30-50 nm). MVs carried cytoplasmic components such as DNA, RNA and proteins. Using a proteomic approach (LC-MS), we identified a total of 103 proteins; 13 exclusively present in the MVs...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28969308/inhibition-of-p75-neurotrophin-receptor-does-not-rescue-cognitive-impairment-in-adulthood-after-isoflurane-exposure-in-neonatal-mice
#5
J M Schilling, A Kassan, C Mandyam, M L Pearn, A Voong, G G Grogman, V B Risbrough, I R Niesman, H H Patel, P M Patel, B P Head
Background: Isoflurane is widely used for anaesthesia in humans. Isoflurane exposure of rodents prior to post-natal day 7 (PND7) leads to widespread neurodegeneration in laboratory animals. Previous data from our laboratory suggest an attenuation of apoptosis with the p75 neurotrophin receptor (p75NTR) inhibitor TAT-Pep5. We hypothesized that isoflurane toxicity leads to behavioural and cognitive abnormalities and can be rescued with pre-anaesthesia administration of TAT-Pep5. Methods: Neonatal mouse pups were pretreated with either TAT-Pep5 (25 μl, 10 μM i...
September 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28966252/inhibitory-effects-of-polyacetylene-compounds-from-panax-ginseng-on-neurotrophin-receptor-mediated-hair-growth
#6
Aoi Suzuki, Daisuke Matsuura, Hirotoshi Kanatani, Shingo Yano, Mitsuo Tsunakawa, Shigeru Matsuyama, Hideyuki Shigemori
Neurotrophins play an important role in the control of the hair growth cycle. Therefore, neurotrophin receptor antagonists have therapeutic potential for the treatment of hair growth disorders. In this study, we investigated the inhibitory effect of Panax ginseng, a medicinal plant commonly used to treat alopecia, on the binding of neurotrophins to their receptors. In addition, we isolated and characterized the bioactive compounds of P. ginseng extracts. P. ginseng hexane extracts strongly inhibited brain-derived neurotrophic factor (BDNF)-TrkB and β-nerve growth factor (β-NGF)-p75 neurotrophin receptor (p75NTR) binding...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28963049/histogram-analysis-parameters-identify-multiple-associations-between-dwi-and-dce-mri-in-head-and-neck-squamous-cell-carcinoma
#7
Hans Jonas Meyer, Leonard Leifels, Stefan Schob, Nikita Garnov, Alexey Surov
OBJECTIVE: Nowadays, multiparametric investigations of head and neck squamous cell carcinoma (HNSCC) are established. These approaches can better characterize tumor biology and behavior. Diffusion weighted imaging (DWI) can by means of apparent diffusion coefficient (ADC) quantitatively characterize different tissue compartments. Dynamic contrast-enhanced magnetic resonance imaging (DCE MRI) reflects perfusion and vascularization of tissues. Recently, a novel approach of data acquisition, namely histogram analysis of different images is a novel diagnostic approach, which can provide more information of tissue heterogeneity...
September 28, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28956260/expression-and-function-of-hsa-mir-6165-in-human-cell-lines-and-during-the-nt2-cell-neural-differentiation-process
#8
Maryam Hassanlou, Bahram Mohammad Soltani, Seyed Javad Mowla
MicroRNAs are small non-coding RNAs that posttranscriptionally regulate mRNA expression. hsa-miR-6165 which was previously discovered in our group is located in the forth intron of p75NTR gene and its function is still under investigation. As P75NTR has diverse cellular functions, some of the complexity of its function could be attributed to the internally located microRNA. Our analysis revealed that treatment of HCT116 cells with 5-azacytidine promoted differential expression of hsa-miR-6165 from its host gene which is consistent with the bioinformatic prediction of an independent promoter for hsa-miR-6165...
September 27, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28954207/effects-of-%C3%A3-tcp-scaffolds-on-neurogenic-and-osteogenic-differentiation-of-human-embryonic-stem-cells
#9
Premjit Arpornmaeklong, Michael J Pressler
Extracellular matrix (ECM) and adhesion molecules play crucial roles in regulating growth and differentiation of stem cells. The current study aimed to investigate the effects of beta-tricalcium phosphate (ß-TCP) scaffolds on differentiation and expression of ECM and adhesion molecules of human embryonic stem cells (hESCs). Undifferentiated hESCs were seeded on ß-TCP scaffolds and cell culture plates and cultured in growth and osteogenic medium for 21 days. Scanning electron microscopy (SEM) displayed adhesion and growth of hESCs on the porous ß-TCP scaffolds...
September 24, 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/28951257/protective-effects-of-the-neurosteroid-allopregnanolone-in-a-mouse-model-of-spontaneous-motoneuron-degeneration
#10
Maria Meyer, Laura I Garay, María Sol Kruse, Agustina Lara, Gisella Gargiulo-Monachelli, Michael Schumacher, Rachida Guennoun, Hector Coirini, Alejandro F De Nicola, Maria Claudia Gonzalez Deniselle
Amyotrophic lateral sclerosis (ALS) is a devastating disorder characterized by progressive death of motoneurons. The Wobbler (WR) mouse is a preclinical model sharing neuropathological similarities with human ALS. We have shown that progesterone (PROG) prevents the progression of motoneuron degeneration. We now studied if allopregnanolone (ALLO), a reduced metabolite of PROG endowed with gabaergic activity, also prevents WR neuropathology. Sixty-day old WRs remained untreated or received two steroid treatment regimens in order to evaluate the response of several parameters during early or prolonged steroid administration...
September 22, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28948865/structure-based-virtual-screening-toward-the-discovery-of-novel-inhibitors-for-impeding-the-protein-protein-interaction-between-hiv-1-integrase-and-human-lens-epithelium-derived-growth-factor-ledgf-p75
#11
Umesh Panwar, Sanjeev Kumar Singh
HIV -1 integrase is a unique promising component of the viral replication cycle, catalyzing the integration of reverse transcribed viral cDNA into the host cell genome. Generally, IN activity requires both viral as well as a cellular co-factor in the processing replication cycle. Among them, the human lens epithelium-derived growth factor (LEDGF/p75) represented as promising cellular co-factor which supports the viral replication by tethering IN to the chromatin. Due to because of its major importance in the early steps of HIV replication, the interaction between IN and LEDGF/p75 has become a pleasing target for anti-HIV drug discovery...
September 26, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28940172/gp2015-an-etanercept-biosimilar
#12
Emma D Deeks
GP2015 is the second biosimilar of the reference p75 TNF receptor-Fc fusion protein etanercept. It is approved for use in all indications for which reference etanercept is approved, including rheumatoid arthritis, juvenile idiopathic arthritis, psoriatic arthritis, ankylosing spondylitis, non-radiographic axial spondyloarthritis, plaque psoriasis and paediatric plaque psoriasis. GP2015 has similar physiochemical and pharmacodynamic properties to those of reference etanercept, and the pharmacokinetic biosimilarity of the agents has been shown in healthy volunteers...
September 23, 2017: BioDrugs: Clinical Immunotherapeutics, Biopharmaceuticals and Gene Therapy
https://www.readbyqxmd.com/read/28927893/msx1-induced-neural-crest-like-reprogramming-promotes-melanoma-progression
#13
Markus V Heppt, Joshua X Wang, Denitsa M Hristova, Zhi Wei, Ling Li, Brianna Evans, Marilda Beqiri, Samir Zaman, Jie Zhang, Martin Irmler, Carola Berking, Robert Besch, Johannes Beckers, Frank J Rauscher, Rick A Sturm, David E Fisher, Meenhard Herlyn, Mizuho Fukunaga-Kalabis
Melanoma cells share many biological properties with neural crest stem cells. Here we show that the homeodomain transcription factor Msh homeobox 1 (MSX1), which is significantly correlated with melanoma disease progression, reprograms melanocytes and melanoma cells towards a neural crest precursor-like state. MSX1-reprogrammed normal human melanocytes express the neural crest marker p75 and become multipotent. MSX1 induces a phenotypic switch in melanoma, which is characterized by an oncogenic transition from an E-cadherin-high non-migratory state towards a ZEB1-high invasive state...
September 16, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28914817/ledgf-p75-deficiency-increases-deletions-at-the-hiv-1-cdna-ends
#14
Murilo T D Bueno, Daniel Reyes, Manuel Llano
Processing of unintegrated linear HIV-1 cDNA by the host DNA repair system results in its degradation and/or circularization. As a consequence, deficient viral cDNA integration generally leads to an increase in the levels of HIV-1 cDNA circles containing one or two long terminal repeats (LTRs). Intriguingly, impaired HIV-1 integration in LEDGF/p75-deficient cells does not result in a correspondent increase in viral cDNA circles. We postulate that increased degradation of unintegrated linear viral cDNA in cells lacking the lens epithelium-derived growth factor (LEDGF/p75) account for this inconsistency...
September 15, 2017: Viruses
https://www.readbyqxmd.com/read/28912711/increased-hippocampal-probdnf-contributes-to-memory-impairments-in-aged-mice
#15
Mona Buhusi, Chris Etheredge, Ann-Charlotte Granholm, Catalin V Buhusi
Memory decline during aging or accompanying neurodegenerative diseases, represents a major health problem. Neurotrophins have long been considered relevant to the mechanisms of aging-associated cognitive decline and neurodegeneration. Mature Brain-Derived Neurotrophic Factor (BDNF) and its precursor (proBDNF) can both be secreted in response to neuronal activity and exert opposing effects on neuronal physiology and plasticity. In this study, biochemical analyses revealed that increased levels of proBDNF are present in the aged mouse hippocampus relative to young and that the level of hippocampal proBDNF inversely correlates with the ability to perform in a spatial memory task, the water radial arm maze (WRAM)...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28904232/effects-of-high-versus-moderate-intensity-training-on-neuroplasticity-and-functional-recovery-after-focal-ischemia
#16
COMPARATIVE STUDY
Caroline Pin-Barre, Annabelle Constans, Jeanick Brisswalter, Christophe Pellegrino, Jérôme Laurin
BACKGROUND AND PURPOSE: This study was designed to compare the effects of high-intensity interval training (HIT) and moderate-intensity aerobic training (MOD) on functional recovery and cerebral plasticity during the first 2 weeks after cerebral ischemia. METHODS: Rats were randomized as follows: control (n=15), SHAM (n=9), middle cerebral artery occlusion (n=13), middle cerebral artery occlusion at day 1 (n=7), MOD (n=13), and HIT (n=13). Incremental tests were performed at day 1 (D1) and 14 (D14) to identify the running speed associated with the lactate threshold (SLT) and the maximal speed (Smax)...
October 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28900083/-the-effects-of-chronic-alcoholization-on-the-expression-of-brain-derived-neurotrophic-factor-and-its-receptors-in-the-brains-of-mice-genetically-predisposed-to-depressive-like-behavior
#17
D V Bazovkina, E M Kondaurova, A S Tsybko, A I Kovetskaya, T V Ilchibaeva, V S Naumenko
Brain-derived neurotropic factor (BDNF) plays an important role in mechanisms of depression. Precursor protein of this factor (proBDNF) can initiate apoptosis in the brain, while the mature form of BDNF is involved in neurogenesis. It is known that chronic alcoholization leads to the activation of apoptotic processes, neurodegeneration, brain injury, and cognitive dysfunction. In this work, we have studied the influence of long-term ethanol exposure on the proBDNF and BDNF protein levels, as well as on the expression of genes that encode these proteins in the brain structures of ASC mice with genetic predisposition to depressive-like behavior and in mice from parental nondepressive CBA strain...
July 2017: Molekuliarnaia Biologiia
https://www.readbyqxmd.com/read/28884714/-therapeutic-monitoring-and-prediction-of-the-efficacy-of-neurotrophic-treatment-in-patients-with-amnestic-type-of-mild-cognitive-impairment
#18
S I Gavrilova, O M Volpina, I V Kolykhalov, Ya B Fedorova, N D Selezneva, E V Ponomareva, D O Koroev, A V Kamynina
AIM: To perform therapeutic monitoring and prediction of the neurotrophic therapy efficacy in patients with amnestic type of mild cognitive impairment (aMCI) in a model of course cerebrolysin therapy. MATERIAL AND METHODS: The study involved a group of 19 elderly patients who met the diagnostic criteria of aMCI. All patients received a course of neurotrophic therapy consisting of 20 intravenous infusions of cerebrolysin (30 ml of cerebrolysin in 100 ml of isotonic sodium chloride solution)...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28884193/neurotrophin-trk-receptors-new-targets-for-cancer-therapy
#19
Jacopo Meldolesi
In the last few years, exciting reports have emerged regarding the role of the two types of neurotrophin receptors, p75(NTR) and Trks, not only in neurons, where they were discovered, but also in non-neural cells and, especially, in numerous cancers, including breast, lung, colon-rectum, pancreas, prostate, glioblastoma, neuroblastoma, myeloma, and lymphoid tumors. Traditionally, p75(NTR), activated by all neurotrophins and their precursors, is an inhibitor. In various cancers, however, activated p75(NTR) induces variable effects, from inhibition to stimulation of cell proliferation, dependent on their direct or coordinate/indirect mechanism(s) of action...
September 8, 2017: Reviews of Physiology, Biochemistry and Pharmacology
https://www.readbyqxmd.com/read/28869759/p75-neurotrophin-receptor-interacts-with-bace1-and-promotes-its-localization-in-endosomes-aggravating-amyloidogenesis
#20
Khalil Saadipour, Noralyn B Mañucat-Tan, Yoon Lim, Damien J Keating, Kevin S Smith, Jin-Hua Zhong, Hong Liao, Larisa Bobrovskaya, Yan-Jiang Wang, Moses V Chao, Xin-Fu Zhou
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by a progressive deposition of amyloid-beta (Aβ) and dysregulation of neurotrophic signaling, causing synaptic dysfunction, loss of memory, and cell death. The expression of p75 neurotrophin receptor is elevated in the brain of AD patients, suggesting its involvement in this disease. However, the exact mechanism of its action is not yet clear. Here, we show that p75 interacts with beta-site amyloid precursor protein cleaving enzyme-1 (BACE1), and this interaction is enhanced in the presence of Aβ...
September 4, 2017: Journal of Neurochemistry
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