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https://www.readbyqxmd.com/read/29157806/trigonelline-promotes-auditory-function-through-nerve-growth-factor-signaling-on-diabetic-animal-models
#1
Rodrigo Castañeda, Isabel Rodriguez, Youn Hee Nam, Bin Na Hong, Tong Ho Kang
BACKGROUND: Protection of cochlear function and reconstruction of neuronal networks in damaged auditory sensory structures is crucial for therapeutic treatment of diabetic hearing loss. Nerve growth factor (NGF) has been used as a novel therapeutic target to protect against the neurodegenerative effects of Diabetes Mellitus (DM). PURPOSE: We aimed to evaluate the potential effect of trigonelline (TRG) on reducing auditory damage produced by DM using NGF as a potential marker...
December 1, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29156327/asiatic-acid-and-maslinic-acid-attenuated-kainic-acid-induced-seizure-through-decreasing-hippocampal-inflammatory-and-oxidative-stress
#2
Zhi-Hong Wang, Mei-Chin Mong, Ya-Chen Yang, Mei-Chin Yin
Seizure is a neurological disorder including hippocampal oxidative and inflammatory stress, and glutamate toxicity. Thus, any agent(s) that mitigate(s) these events in hippocampus might attenuate seizure severity. The effects of asiatic acid (AA) or maslinic acid (MA) pre-administration at 20 or 40mg/kg body weight/day upon inflammatory, oxidative and apoptotic injury in hippocampus of kainic acid (KA)-treated mice were examined. KA induced seizure-like behavioral patterns, which was attenuated by AA or MA pre-administration...
November 17, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29140928/ngf-locally-sensitizes-nociceptors-in-human-skin
#3
Otilia Obreja, Roman Rukwied, Lorenz Nagler, Martha Schmidt, Martin Schmelz, Barbara Namer
Nerve growth factor (NGF) injected into human skin causes local hyperalgesia to mechanical and electrical stimuli lasting for weeks. Pig data suggested axonal sensitization of C-nociceptors as contributing mechanism. Here, we recorded single C- nociceptors in eleven human subjects 3 weeks after intracutaneous injection of 1 µg NGF into the foot dorsum. For each identified unit, the receptive field was mapped and, whenever possible, we recorded two terminal branches of the same unit, one from the hyperalgesic NGF-site ("inside") and the other from the non-sensitized skin ("outside")...
November 13, 2017: Pain
https://www.readbyqxmd.com/read/29140923/il-4-mediates-the-analgesia-produced-by-low-intensity-exercise-in-mice-with-neuropathic-pain
#4
Franciane Bobinski, Juliana Maia Teixeira, Kathleen Anne Sluka, Adair Roberto Soares Santos
Peripheral nerve injury (PNI) activates the immune system resulting in increased pro-inflammatory cytokines at the site of injury and in the spinal cord dorsal horn. Exercise modulates the immune system promoting an anti-inflammatory phenotype of macrophages in uninjured muscle, and increases in anti-inflammatory cytokines can promote healing and analgesia. We proposed that PNI will decrease, and treadmill exercise will increase, release of anti-inflammatory cytokines at the site of injury and in the spinal cord...
November 13, 2017: Pain
https://www.readbyqxmd.com/read/29140156/conditioned-medium-from-human-gingival-mesenchymal-stem-cells-protects-motor-neuron-like-nsc-34-cells-against-scratch-injury-induced-cell-death
#5
Thangavelu Soundara Rajan, Francesca Diomede, Placido Bramanti, Oriana Trubiani, Emanuela Mazzon
Neuronal cell death is a normal process during central nervous system (CNS) development and is also involved in the death of motor neurons in diverse spinal motor neuron degenerative diseases. Here, we investigated the neuroprotective effect of secretory factors released from human gingival mesenchymal stem cells (hGMSCs) in mechanically injured murine motor-neuron-like NSC-34 cells. The cells were exposed to scratch injury and the markers for apoptosis and oxidative stress were examined. Immunocytochemistry results showed that proapoptotic markers cleaved caspase-3 and Bax were elevated while anti-apoptotic protein Bcl-2 was suppressed in scratch-injured NSC-34 cells...
November 1, 2017: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/29138838/effects-of-scn9a-gene-modification-on-na-channel-and-the-expression-of-nerve-growth-factor-in-a-rat-model-of-diarrhea%C3%A2-predominant-irritable-bowel-syndrome
#6
Yong-Yan Cai, Chen Li, Zhi-Xin Yan, Na Ma, Fang-Fang Li
The aim of the present study was to identify whether the sodium voltage-gated channel alpha subunit 9 (SCN9A) gene modification is a potential treatment for diarrhea‑predominant irritable bowel syndrome (D‑IBS), via regulating the Na+ channel and the expression of nerve growth factor (NGF). The recombinant adenovirus vector of the SCN9A gene was established, and rat colon cells were isolated for SCN9A gene modification. All subjects were divided into four groups: i) The SCN9A‑modified (D‑IBS rat model implanted with SCN9A‑modified colon cells), ii) negative control (NC; D‑IBS rat model implanted with colon cells without SCN9A gene modification), iii) blank (D‑IBS rat model without any treatment) and iv) normal (normal rats without any treatment)...
November 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29137640/direct-reprogramming-of-mouse-fibroblasts-into-neural-cells-via-porphyra-yezoensis-polysaccharide-based-high-efficient-gene-co-delivery
#7
Qingtong Yu, Jingjing Chen, Wenwen Deng, Xia Cao, Yan Wang, Jie Zhou, Wenqian Xu, Pan Du, Qiang Wang, Jiangnan Yu, Ximing Xu
BACKGROUND: The cell source for transplantation therapy is always a prerequisite question to be solved in clinical applications. Neural cells are considered non-regenerable, which highly restrict their application in the treatment for nerve injury. Therefore, neural trans-differentiation based on gene transfection provides a new solution to this issue. Compared to viral strategy, non-viral gene delivery systems are considered as a more promising way to achieve this aim. This study centers on a novel application of Porphyra yezoensis polysaccharide as a non-viral gene carrier for the neural trans-differentiation of mouse fibroblasts...
November 14, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29131068/maternal-cannabinoid-use-alters-cannabinoid-cb1-and-endothelin-etb-receptor-expression-in-the-brains-of-dams-but-not-their-offspring
#8
Aarti Amlani, Mary G Hornick, Kevin Cooper, Preetha Prazad, Ramona Donovan, Anil Gulati
According to the 2015 National Survey on Drug Use and Health, cannabis (marijuana) is the most commonly used recreational drug in the US. Among pregnant women aged 14-55 years, 3.4% were cannabis users. Presently, little is known about the neurodevelopmental effect of cannabis use during pregnancy and/or nursing on neonates. Endothelin (ET) is essential for normal development of the central nervous system (CNS). Decreases in ETB receptor expression correlate with a decline in nerve growth factor (NGF) and an increase in vascular endothelial growth factor (VEGF) in postnatal brain...
November 4, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/29119332/therapeutic-effect-of-vinorine-on-sciatic-nerve-injured-rat
#9
Dongdong Guo, Xingang Lu, Xiaoli Xu, Haixin Gou, Zhiqian Wang, Yi Cao, Xingjing Luo
Vinorine is a monoterpenoid indole alkaloid, a type of natural alkaloids. Growing reports exhibited the numerous pharmacology activities of vinorine such as anti-inflammation, anti-bacterial and anti-tumor. In this study, the effect of vinorine injection (7.5, 15 and 30 mg/kg) on motor function, sensation and nerve regeneration in sciatic nerve crush injury rat was investigated. The results of behavioral analysis, electrophysiological analysis and muscle histological analysis suggested that vinorine promoted the motor function recovery after sciatic nerve injury...
November 8, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/29118440/native-joint-resident-mesenchymal-stem-cells-for-cartilage-repair-in-osteoarthritis
#10
REVIEW
Dennis McGonagle, Thomas G Baboolal, Elena Jones
The role of native (not culture-expanded) joint-resident mesenchymal stem cells (MSCs) in the repair of joint damage in osteoarthritis (OA) is poorly understood. MSCs differ from bone marrow-residing haematopoietic stem cells in that they are present in multiple niches in the joint, including subchondral bone, cartilage, synovial fluid, synovium and adipose tissue. Research in experimental models suggests that the migration of MSCs adjacent to the joint cavity is crucial for chonodrogenesis during embryogenesis, and also shows that synovium-derived MSCs might be the primary drivers of cartilage repair in adulthood...
November 9, 2017: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/29117739/cardiac-autonomic-denervation-and-expression-of-neurotrophins-ngf-and-bdnf-and-their-receptors-during-experimental-chagas-disease
#11
Natália Katley Oliveira, Rodrigo Novaes Ferreira, Sara Delaine Nogueira Lopes, Egler Chiari, Elizabeth Ribeiro da Silva Camargos, Patricia Massara Martinelli
Although cardiac dysautonomia is a distinctive feature of Chagas disease, its clinical and functional significance is still being speculated. Neurotrophic factors are potentially involved; however, studies of their effect in this infection are rare. Ultrastructural abnormalities in autonomic varicosities, levels of both nerve growth factor (NGF), and brain-derived neurotrophic factor (BDNF), as well as the expression of their receptors, were analysed in the heart of a rat model of Trypanosoma infection. Predominantly, at the early stage of the infection, cardiac autonomic varicosities displayed several signs of degeneration parallel to the elevation of cardiac levels of NGF, as well as expression of the receptors TrkA and p75NTR...
November 8, 2017: Growth Factors
https://www.readbyqxmd.com/read/29116059/genetic-predictors-associated-with-diabetic-retinopathy-in-diabetic-foot-patients-a-preliminary-study
#12
Beata Mrozikiewicz-Rakowska, Magdalena Łukawska, Piotr Nehring, Konrad Szymański, Agnieszka Sobczyk-Kopcioł, Monika Krzyżewska, Paweł Maroszek, Rafał Płoski, Leszek Czupryniak
INTRODUCTION    Early detection of diabetic retinopathy (DR) is key for preventing irreversible blindness. Recent research has identified some of the genetic factors involved in the pathology of DR, although their precise underlying mechanisms remain unclear. OBJECTIVES    This pilot study aimed to determine genetic predictors of DR among patients with type 2 diabetes mellitus (T2DM) and diabetic foot (DF) based on pathogenetic pathways. PATIENTS AND METHODS    The study was conducted on 114 patients with T2DM and DF (64 with DR, 50 without DR) treated in the Medical University of Warsaw...
November 7, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/29115371/a-novel-method-of-neural-differentiation-of-pc12-cells-by-using-opti-mem-as-a-basic-induction-medium
#13
Rendong Hu, Qiaoyu Cao, Zhongqing Sun, Jinying Chen, Qing Zheng, Fei Xiao
The PC12 cell line is a classical neuronal cell model due to its ability to acquire the sympathetic neurons features when deal with nerve growth factor (NGF). In the present study, the authors used a variety of different methods to induce PC12 cells, such as Opti-MEM medium containing different concentrations of fetal bovine serum (FBS) and horse serum compared with RPMI-1640 medium, and then observed the neurite length, differentiation, adhesion, cell proliferation and action potential, as well as the protein levels of axonal growth-associated protein 43 (GAP-43) and synaptic protein synapsin-1, among other differences...
October 19, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29115286/genetic-predictors-associated-with-diabetic-retinopathy-in-diabetic-foot-patients
#14
Beata Mrozikiewicz-Rakowska, Magdalena Łukawska, Piotr Nehring, Konrad Szymański, Agnieszka Sobczyk-Kopcioł, Monika Krzyżewska, Paweł Maroszek, Rafał Płoski, Leszek Czupryniak
INTRODUCTION: Early detection of diabetic retinopathy (DR) is key for preventing irreversible blindness. Recent research has identified some of the genetic factors involved in the pathology of DR, although their precise underlying mechanisms remain unclear. OBJECTIVES: This pilot study aimed to determine genetic predictors of DR among patients with type 2 diabetes mellitus (T2DM) and diabetic foot (DF) based on pathogenetic pathways. PATIENTS AND METHODS: The study was conducted on 114 patients with T2DM and DF (64 with DR, 50 without DR) treated in the Medical University of Warsaw...
November 7, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/29108999/generation-of-rationally-designed-nerve-growth-factor-ngf-variants-with-receptor-specificity
#15
Laura A Carleton, Reka Chakravarthy, Almer M van der Sloot, Katarzyna Mnich, Luis Serrano, Afshin Samali, Adrienne M Gorman
Nerve growth factor (NGF) is the prototypic member of the neurotrophin family and binds two receptors, TrkA and the 75 kDa neurotrophin receptor (p75(NTR)), through which diverse and sometimes opposing effects are mediated. Using the FoldX protein design algorithm, we generated eight NGF variants with different point mutations predicted to have altered binding to TrkA or p75(NTR). Of these, the I31R NGF variant exhibited specific binding to p75(NTR). The generation of this NGF variant with selective affinity for p75(NTR) can be used to enhance understanding of neurotrophin receptor imbalance in diseases and identifies a key targetable residue for the development of small molecules to disrupt binding of NGF to TrkA with potential uses in chronic pain...
November 3, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29108503/stress-during-development-of-experimental-endometriosis-influences-nerve-growth-and-disease-progression
#16
Marielly Cuevas, Myrella L Cruz, Antonio E Ramirez, Idhaliz Flores, Kenira J Thompson, Manuel Bayona, Michael W Vernon, Caroline B Appleyard
PURPOSE: We have previously shown that stress prior to induction worsens clinical presentation and inflammatory parameters in a rat model of endometriosis. This study was designed to examine whether stress during the development of endometriosis can affect the growth of endometriotic implants through nerve growth and immune alterations. METHODS: Endometriosis was surgically induced in female Sprague-Dawley rats by suturing uterine horn implants onto the small intestine mesentery...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/29108398/blockade-of-p75-neurotrophin-receptor-reverses-irritability-and-anxiety-related-behaviors-in-a-rat-model-of-status-epilepticus
#17
Soraya Mehrabi, Mahyar Janahamdi, Mohammad Taghi Joghataie, Mahmood Barati, Mohsen Marzban, Mahmoudreza Hadjighassem, Maryam Farahmandfar
Background: Many recent epidemiological studies have shown that epileptic patients are more likely suffer from depression, anxiety, and irritability. However, the cellular mechanisms of epilepsy-induced psychotic behaviors are not fully elucidated. Neurotrophin receptors have been suggested to be involved in epilepsy and also in psychiatric disorders. Up-regulation of p75NTR expression and activation of p75NTR signalling cascades after the seizure have been shown, but the role of the p75 receptor in epilepsy-induced psychotic behaviors has not been documented so far...
November 7, 2017: Iranian Biomedical Journal
https://www.readbyqxmd.com/read/29106600/chronic-irradiation-with-low-dose-rate-137cs-%C3%AE-rays-inhibits-ngf-induced-neurite-extension-of-pc12-cells-via-ca2-calmodulin-dependent-kinase-ii-activation
#18
Katoh Shinsuke, Kobayashi Junya, Umeda Tomonobu, Kobayashi Yoshiko, Nobuo Izumo, Suzuki Takahiko
Chronic irradiation with low-dose-rate 137Cs-γ rays inhibits the differentiation of human neural progenitor cells and influences the expression of proteins associated with several cellular functions. We aimed to determine whether such chronic irradiation influences the expression of proteins associated with PC12 cells. Chronic irradiation at 0.027 mGy/min resulted in inhibition of NGF-induced neurite extension. Furthermore, irradiation enhanced the nerve growth factor (NGF)-induced increase in the phosphorylation of extracellular signal-regulated kinase (ERK), but did not affect the phosphorylation of NGF receptors, suggesting that irradiation influences pathways unassociated with the activation of ERK...
June 30, 2017: Journal of Radiation Research
https://www.readbyqxmd.com/read/29105463/-moxibustion-improves-learning-ability-by-regulating-hippocampal-neurotrophic-factor-expression-and-notch-signaling-in-vascular-dementia-rats
#19
Ying Wang, Sheng-Chao Cai, Xiao-Ge Song, Wan-Li Zhu, Kun Yang, Jian-Jian Qian, Nuo-Nuo Ding
OBJECTIVE: To observe the effect of moxibustion on the learning ability and expression of neurotrophic factors and Notch signaling in vascular dementia (VD) rats, so as to explore its neurogenesis mechanism underlying improvement of VD. METHODS: Sixty SD rats were equally and randomly divided into sham operation (sham), model, medication and moxibustion groups (n=15 rats/group). The VD model was established by occlusion of the bilateral cervical common arteries and reperfusion...
October 25, 2017: Zhen Ci Yan Jiu, Acupuncture Research
https://www.readbyqxmd.com/read/29104116/putative-roles-of-soluble-trophic-factors-in-facial-nerve-regeneration-target-reinnervation-and-recovery-of-vibrissal-whisking
#20
REVIEW
Habib Bendella, Svenja Rink, Maria Grosheva, Levent Sarikcioglu, Tessa Gordon, Doychin N Angelov
It is well-known that, after nerve transection and surgical repair, misdirected regrowth of regenerating motor axons may occur in three ways. The first way is that the axons enter into endoneurial tubes that they did not previously occupy, regenerate through incorrect fascicles and reinnervate muscles that they did not formerly supply. Consequently the activation of these muscles results in inappropriate movements. The second way is that, in contrast with the precise target-directed pathfinding by elongating motor nerves during embryonic development, several axons rather than a single axon grow out from each transected nerve fiber...
November 8, 2017: Experimental Neurology
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