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https://www.readbyqxmd.com/read/29674004/an-unusual-finding-of-schwannoma-in-the-columellar-area-a-case-report
#1
Sarah Bouayyad, Jen H Ong, Matthew Peter Ellis, Philip Sloan
INTRODUCTION: Schwannomas are benign tumours of the nerve sheath that originate from Schwann cells. Less than 4% of these tumours arise in the sinonasal tract. Columellar involvement is extremely rare - three other cases involving the columella have been reported since 1967. PRESENTATION OF CASE: A 25-year-old woman presented with a swelling of the nasal columella from eight months into pregnancy. She presented with right nasal obstruction and discomfort over the nasal bridge...
February 10, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29672039/discovery-of-allosteric-potent-subtype-selective-and-peripherally-restricted-trka-kinase-inhibitors
#2
Sharan K Bagal, Kiyoyuki Omoto, David C Blakemore, Peter J Bungay, James G Bilsland, Philip J Clarke, Matthew S Corbett, Ciarán N Cronin, Jingrong Jean Cui, Rebecca Dias, Neil J Flanagan, Samantha E Greasley, Rachel Grimley, Eric Johnson, David Fengas, Linda Kitching, Michelle L Kraus, Indrawan McAlpine, Asako Nagata, Gareth J Waldron, Joseph S Warmus
Tropomyosin receptor kinases are a family of three tyrosine kinases (TrkA, TrkB, TrkC) activated by peptide hormones of the neurotrophin family: nerve growth factor (NGF), brain derived neurotrophic factor (BDNF), neurotrophin 3 (NT3) and neurotrophin 4 (NT4). The NGF antibody tanezumab has provided clinical proof of concept for inhibition of the TrkA kinase pathway in pain. In turn, this has led to significant interest in the development of small molecule inhibitors of TrkA as an alternative intervention point on the NGF pathway...
April 19, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29670463/combination-treatment-of-c16-peptide-and-angiopoietin-1-alleviates-neuromyelitis-optica-in-an-experimental-model
#3
Yuanyuan Zhang, Kewei Tian, Hong Jiang, Beibei Wang, Shu Han
Neuromyelitis optica (NMO) is an autoimmune inflammatory demyelinating disease that mainly affects the spinal cord and optic nerve, causing blindness and paralysis in some individuals. Moreover, NMO may cause secondary complement-dependent cytotoxicity (CDC), leading to oligodendrocyte and neuronal damage. In this study, a rodent NMO model, showing typical NMO pathogenesis, was induced with NMO-IgG from patient serum and human complement. We then tested whether the combination of C16, an α v β 3 integrin-binding peptide, and angiopoietin-1 (Ang1), a member of the endothelial growth factor family, could alleviate NMO in the model...
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29669322/microrna-381-favors-repair-of-nerve-injury-through-regulation-of-the-sdf-1-cxcr4-signaling-pathway-via-lrrc4-in-acute-cerebral-ischemia-after-cerebral-lymphatic-blockage
#4
Jian-Min Piao, Wei Wu, Zhong-Xi Yang, Yu-Zhen Li, Qi Luo, Jin-Lu Yu
BACKGROUND/AIMS: Acute cerebral ischemia is a manifestation of cerebral vascular insufficiency and has a high mortality. However, the therapy for acute cerebral ischemia is still limited. This study aimed to investigate the effect of microRNA-381 (miR-381) on the repair of nerve injury in rats with acute cerebral ischemia after cerebral lymphatic blockage (CLB) by targeting leucine-rich repeat C4 protein (LRRC4) through the Stromal cell-derived factor-1/CXC chemokine receptor-4 signaling pathway...
April 13, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29666812/tumor-progression-the-neuronal-input
#5
REVIEW
Marco Arese, Federico Bussolino, Margherita Pergolizzi, Laura Bizzozero, Davide Pascal
One of the challenges of cancer is its heterogeneity and rapid capacity to adapt. Notwithstanding significant progress in the last decades in genomics and precision medicine, new molecular targets and therapies appear highly necessary. One way to approach this complex problem is to consider cancer in the context of its cellular and molecular microenvironment, which includes nerves. The peripheral nerves, the topic of this review, modulate the biological behavior of the cancer cells and influence tumor progression, including the events related to the metastatic spread of the disease...
March 2018: Annals of Translational Medicine
https://www.readbyqxmd.com/read/29665434/differential-growth-of-mycobacterium-leprae-strains-snp-genotypes-in-armadillos
#6
Rahul Sharma, Pushpendra Singh, Maria Pena, Ramesh Subramanian, Vladmir Chouljenko, Joohyun Kim, Nayong Kim, John Caskey, Marie A Baudena, Linda B Adams, Richard W Truman
Leprosy (Hansen's Disease) has occurred throughout human history, and persists today at a low prevalence in most populations. Caused by Mycobacterium leprae, the infection primarily involves the skin, mucosa and peripheral nerves. The susceptible host range for Mycobacterium leprae is quite narrow. Besides humans, nine banded armadillos (Dasypus novemcinctus) and red squirrels (Sciurus vulgaris) are the only other natural hosts for M. leprae, but only armadillos recapitulate the disease as seen in humans. Armadillos across the Southern United States harbor a single predominant genotypic strain (SNP Type-3I) of M...
April 14, 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29664414/enhanced-total-neurite-outgrowth-and-secondary-branching-in-dorsal-root-ganglion-neurons-elicited-by-low-intensity-pulsed-ultrasound
#7
Daniel Michael Ventre, Marissa Puzan, Emily Ashbolt, Abigail Koppes
OBJECTIVE: Despite the prevalence of peripheral nerve injuries (PNI), challenges remain in restoring full functionality to those afflicted. For recovery to occur, axons must extend across the injury site to connect with distal targets, where injury gap size is a critical factor in the probability of restoration of function. Current clinical therapies often achieve limited neural regeneration, motivating the development of new therapeutic interventions such as biophysical stimulation. APPROACH: To investigate the potential for low intensity, pulsed ultrasonic simulation (LIPUS) to impact peripheral nerve regeneration, primary neonatal rat dorsal root ganglion neurons were examined in vitro in response to ultrasound (US)...
April 17, 2018: Journal of Neural Engineering
https://www.readbyqxmd.com/read/29663371/distribution-of-extracellular-matrix-molecules-in-human-uterine-tubes-during-the-menstrual-cycle-a-histological-and-immunohistochemical-analysis
#8
Carlos Godoy-Guzmán, Claudio Nuñez, Pedro Orihuela, Antonio Campos, Víctor Carriel
The uterine tube (UT) is an important and complex organ of the women's reproductive system. In general, the anatomy and basic histology of this organ are well-known. However, the composition and function of the extracellular matrix (ECM) of the UT is still poorly understood. The ECM is a complex supramolecular material produced by cells which is commonly restricted to the basement membrane and interstitial spaces. ECM molecules play not only a structural role, they are also important for cell growth, survival and differentiation in all tissues...
April 16, 2018: Journal of Anatomy
https://www.readbyqxmd.com/read/29663315/pro-region-engineering-of-nerve-growth-factor-by-deep-mutational-scanning-enables-a-yeast-platform-for-conformational-epitope-mapping-of-anti-ngf-monoclonal-antibodies
#9
Angélica V Medina-Cucurella, Yaqi Zhu, Scott J Bowen, Lisa M Bergeron, Timothy A Whitehead
Nerve growth factor (NGF) plays a central role in multiple chronic pain conditions. As such, anti-NGF monoclonal antibodies (mAbs) that function by antagonizing NGF downstream signaling are leading drug candidates for non-opioid pain relief. To evaluate anti-canine NGF (cNGF) mAbs we sought a yeast surface display platform of cNGF. Both mature cNGF and pro-cNGF displayed on the yeast surface but bound conformationally sensitive mAbs at most 2.5-fold in mean fluorescence intensity above background, suggesting that cNGF was mostly misfolded...
April 16, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29661920/dhtkd1-deficiency-causes-charcot-marie-tooth-disease-in-mice
#10
Wang-Yang Xu, Houbao Zhu, Yan Shen, Ying-Han Wan, Xiao-Die Tu, Wen-Ting Wu, Lingyun Tang, Hong-Xin Zhang, Shun-Yuan Lu, Xiao-Long Jin, Jian Fei, Zhu-Gang Wang
DHTKD1, a part of 2-ketoadipic acid dehydrogenase complex, is involved in lysine and tryptophan catabolism. Mutations in DHTKD1 block the metabolic pathway and cause 2-aminoadipic and 2-oxoadipic aciduria (AMOXAD), an autosomal recessive inborn metabolic disorder. In addition, a nonsense mutation in DHTKD1 we identified previously causes Charcot-Marie-Tooth disease (CMT) type 2Q, one of the most common inherited neurological disorders affecting the peripheral nerves in the musculature. However, the comprehensive molecular mechanism underlying CMT2Q remains elusive...
April 16, 2018: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/29661830/sustained-adrenergic-signaling-promotes-intratumoral-innervation-through-bdnf-induction
#11
Julie K Allen, Guillermo N Armaiz-Pena, Archana S Nagaraja, Nouara C Sadaoui, Tatiana Ortiz, Robert Dood, Merve Ozcan, Danielle M Herder, Monika Haemerrle, Kshipra M Gharpure, Rajesha Rupaimoole, Rebecca Previs, Sherry Y Wu, Sunila Pradeep, Xiaoyun Xu, Hee Dong Han, Behrouz Zand, Heather J Dalton, Morgan Taylor, Wei Hu, Justin Bottsford-Miller, Myrthala Moreno-Smith, Yu Kang, Lingegowda S Mangala, Cristian Rodriguez-Aguayo, Vasudha Sehgal, Erika L Spaeth, Prahlad T Ram, Stephen Tc Wong, Frank C Marini, Gabriel Lopez-Berestein, Steve W Cole, Susan K Lutgendorf, Mariella diBiasi, Anil K Sood
Mounting clinical and preclinical evidence supports a key role for sustained adrenergic signaling in the tumor microenvironment as a driver of tumor growth and progression. However, the mechanisms by which adrenergic neurotransmitters are delivered to the tumor microenvironment are not well understood. Here we present evidence for a feedforward loop whereby adrenergic signaling leads to increased tumoral innervation. In response to catecholamines, tumor cells produced brain-derived neurotrophic factor (BDNF) in an ADRB3/cAMP/Epac/JNK-dependent manner...
April 16, 2018: Cancer Research
https://www.readbyqxmd.com/read/29658336/nodular-fasciitis-involving-the-palm
#12
M Emori, J Shimizu, Y Murahashi, E Mizushima, S Sugita, T Hasegawa, T Yamashita
Nodular fasciitis (NF) is a self-limiting fibrous neoplasm that can be mistaken for a soft tissue sarcoma. It is characterised by rapid growth, slight pain and local tenderness. Although it is frequently found in the forearm, a lesion distal to the wrist is quite rare. We present two unusual cases of NF involving the palm, supported by detecting ubiquitin specific protease 6 gene rearrangement. The first patient had non-intraneural NF presenting as peripheral neuropathy affecting the digital nerve while the second patient suffered from painless, non-tender NF in the palm, which had not regressed spontaneously during the five months prior to surgery...
April 16, 2018: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/29657440/magnetic-growth-modulation-in-orthopaedic-and-spine-surgery
#13
REVIEW
Adam E M Eltorai, Carolina Fuentes
Purpose: To examine distraction-based methods for treatment of early onset scoliosis (EOS), focusing on the magnetically controlled growing rod system (MCGR) relative to traditional growing rod system (TGR). To briefly discuss internal magnetically controlled nails for bone lengthening as another application of magnetic growth modulation. Results: Relative to TGR, MCGR involves fewer complications related to infection and general anesthesia because of fewer successive surgeries required...
March 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29655645/proton-beam-irradiation-a-safe-procedure-in-post-equatorial-extraocular-extension-from-uveal-melanoma
#14
Ira Seibel, Aline I Riechardt, Katharina Erb-Eigner, Alexander Böker, Dino Cordini, Jens Heufelder, Antonia M Joussen
PURPOSE: This study was performed to show long-term outcomes concerning metastasis rates and local recurrence rates after primary proton beam therapy in uveal melanoma with posterior extraocular extension (EOE) with the main focus on optic nerve invasion. DESIGN: Retrospective case series METHODS: All patients treated with primary proton beam therapy for choroidal or ciliary body melanoma with posterior EOE between July 1998 and August 2010 were included. EOE was either detected upon sonography at primary examination or during the surgical application of tantalum clips onto the sclera...
April 12, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29653412/sensorimotor-gating-deficits-and-effects-of-antipsychotics-on-the-hyperactivity-in-vgf-overexpressing-mice
#15
Takahiro Mizoguchi, Hiroko Minakuchi, Miyu Tanaka, Kazuhiro Tsuruma, Masamitsu Shimazawa, Hideaki Hara
BACKGROUND: VGF nerve growth factor inducible (VGF) is a neuropeptide which is expressed in neuronal cells and endocrine cells. VGF is induced by several neurotrophic factors. The expression level of VGF in patients with schizophrenia is increased in cerebrospinal fluid (CSF) and prefrontal cortex. In our previous study, we generated mice in which the expression level of VGF in the brain was increased. VGF-overexpressing mice exhibited abnormal behaviors including hyperactivity. However, it remains unknown whether VGF-overexpressing mice exhibit the endophenotype of schizophrenia and whether abnormal behaviors in these mice can be improved by antipsychotics...
November 22, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29652232/long-term-tumor-control-following-stereotactic-radiosurgery-for-jugular-paraganglioma-using-3d-volumetric-segmentation
#16
Neil S Patel, Matthew L Carlson, Bruce E Pollock, Colin L W Driscoll, Brian A Neff, Robert L Foote, Christine M Lohse, Michael J Link
OBJECTIVE The morbidity of gross-total resection of jugular paraganglioma (JP) is often unacceptable due to the potential for irreversible lower cranial neuropathy. Stereotactic radiosurgery (SRS) has been used at the authors' institution since 1990 for the treatment of JP and other benign intracranial tumors. Conventional means of assessing tumor progression using linear measurements or elliptical approximations are imprecise due to the irregular shape and insinuating growth pattern of JP. The objective of this study was to assess long-term tumor control in these patients by using slice-by-slice 3D volumetric segmentation of serial MRI data...
April 13, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29651949/nerve-growth-factor-early-studies-and-recent-clinical-trials
#17
Maria Luisa Rocco, Marzia Soligo, Luigi Manni, Luigi Aloe
Since its discovery, nerve growth factor (NGF) has long occupied a critical role in developmental and adult neurobiology for its many important regulatory functions on the survival, growth and differentiation of nerve cells in the peripheral and central nervous system. NGF is the first discovered member of a family of neurotrophic factors, collectively indicated as neurotrophins, (which include brain-derived neurotrophic factor, neurotrophin-3 and neurotrophin 4/5). NGF was discovered for its action on the survival and differentiation of selected populations of peripheral neurons...
April 11, 2018: Current Neuropharmacology
https://www.readbyqxmd.com/read/29651618/effect-of-renal-sympathetic-denervation-on-ventricular-and-neural-remodeling
#18
L Wang, G Wei, L Song, C Li, F Zhang, Y Yang, C Lu
BACKGROUND: This study assessed the therapeutic effects of renal sympathetic denervation (RDN) on post-myocardial infarction (MI) ventricular remodeling and sympathetic neural remodeling in dogs. The possible mechanisms and optimal time for treatment are discussed. METHODS: We randomly assigned 30 dogs to five groups: RDN 1 week before MI (RDN1w + MI; n = 6), RDN 1 week after MI (MI1w + RDN; n = 6), RDN 2 weeks after MI (MI2w + RDN; n = 6), control (N; n = 6), and MI (n = 6)...
April 12, 2018: Herz
https://www.readbyqxmd.com/read/29649935/polyurethane-nano-hydroxyapatite-composite-films-as-osteogenic-platforms
#19
Bailey K Barnes, Austin J Bow, Ganesh Kannarpady, Alexandru S Biris, David E Anderson, Madhu Dhar, Shawn E Bourdo
A wide variety of biomaterials are utilized in tissue engineering to generate living cells in vitro or to promote tissue growth in vivo. Regeneration of living tissue from biocompatible materials may make it possible to grow tissues ranging from bone to nerve cells. In bone regeneration, polymeric scaffolds can be enhanced by the addition of bioactive materials. To this end, this study designed several ratios of polyurethane (PU) and nano-hydroxyapatite (nHA) composites (PU-nHA ratios: 100/0, 90/10, 80/20, 70/30, 60/40 w/w)...
April 13, 2018: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/29649746/degradation-of-alpha-synuclein-by-dendritic-cell-factor-1-delays-neurodegeneration-and-extends-lifespan-in-drosophila
#20
Shiqing Zhang, Ruili Feng, Yanhui Li, Linhua Gan, Fangfang Zhou, Shiquan Meng, Qian Li, Tieqiao Wen
Parkinson's disease (PD) is a common neurodegenerative disease associated with the progressive loss of dopaminergic neurons in the substantia nigra. Proteinaceous depositions of alpha-synuclein (α-syn) and its mutations, A30P and A53T, are one important characteristic of PD. However, little is known about their aggregation and degradation mechanisms. Dendritic cell factor 1 (DCF1) is a membrane protein that plays important roles in nerve development in mouse. In this study, we aimed to show that DCF1 overexpression in a PD Drosophila model significantly ameliorates impaired locomotor behavior in third instar larvae and normalizes neuromuscular junction growth...
March 13, 2018: Neurobiology of Aging
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