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Nese Dericioglu, Rahsan Gocmen, Ersin Tan
No abstract text is available yet for this article.
July 2018: Clinical Neurology and Neurosurgery
Albert E Kim, Peter Kang, Robert C Bucelli, Cole J Ferguson, Robert E Schmidt, Arun S Varadhachary, Gregory S Day
INTRODUCTION: Indications for autoantibody testing in patients with rapid-onset cognitive impairment have expanded in step with the growing number of disease-associated autoantibodies and clinical syndromes. Although increased access to autoantibody testing has broadened our understanding of the spectrum of autoimmune encephalitis (AE), it has also produced new challenges associated with deciphering the contributions of disease-associated autoantibodies in patients with atypical clinical features and/or multiple autoantibodies...
March 2018: Neurologist
Masanori Nakajima, Ayumi Uchibori, Yuki Ogawa, Tai Miyazaki, Yaeko Ichikawa, Kimihiko Kaneko, Toshiyuki Takahashi, Ichiro Nakashima, Hirokazu Shiraishi, Masakatsu Motomura, Atsuro Chiba
A 61-year-old woman who had smoked for 40 years developed subacute dizziness, ataxic gait, opsoclonus, and right visual impairment. She had right optic disc swelling and optic nerve gadolinium enhancement on magnetic resonance imaging. She had small-cell lung cancer (SCLC), with CV2/collapsin response mediator protein (CRMP) 5 and HuD antibodies in her serum and cerebrospinal fluid. She was diagnosed with paraneoplastic optic neuropathy (PON) accompanied by paraneoplastic opsoclonus-ataxia syndrome. Her symptoms improved after removing the SCLC...
January 11, 2018: Internal Medicine
Thien Thien Lim
PURPOSE OF REVIEW: To provide an overview of paraneoplastic autoimmune disorders presenting with various movement disorders. RECENT FINDINGS: The spectrum of paraneoplastic autoimmune disorders has been expanding with the discovery of new antibodies against cell surface and intracellular antigens. Many of these paraneoplastic autoimmune disorders manifest as a form of movement disorder. With the discovery of new neuronal antibodies, an increasing number of idiopathic or neurodegenerative movement disorders are now being reclassified as immune-mediated movement disorders...
November 2017: Parkinsonism & related Disorders
Nozomi Igarashi, Hiromasa Sawamura, Toshikatsu Kaburaki, Makoto Aihara
A 68-year-old male presented with blurred vision in both eyes. Ophthalmoscopy revealed bilateral prominent disc swelling and vitritis. No systematic neurological symptoms were observed. Magnetic resonance imaging revealed bilateral meningeal enhancement of the optic nerve. Small cell carcinoma was found, and antibodies against collapsing response-mediating protein-5 (CRMP-5) were detected in the serum. Ophthalmological manifestations disappeared during a decrease in tumour size with treatment for the malignancy...
February 2017: Neuro-ophthalmology
Avi Gadoth, Thomas J Kryzer, Jim Fryer, Andrew McKeon, Vanda A Lennon, Sean J Pittock
OBJECTIVE: To report the identification of microtubule-associated protein (MAP) 1B as the antigen of the previously described Purkinje cell cytoplasmic antibody type 2 (PCA-2) antibody, its frequency, and clinical, oncological, and serological associations. METHODS: Archival serum or cerebrospinal fluid (CSF) specimens were available from 96 of 118 consecutive PCA-2-IgG-seropositive patients identified during 1993-2016. The autoantigen, defined in mouse brain lysate by Western blot and mass spectrometry, was confirmed by dual immunohistochemical staining using commercial antibodies...
February 2017: Annals of Neurology
Jonathan A Micieli, Edward A Margolin
Paraneoplastic optic neuropathy (PON) is a rare cause of vision loss usually associated with small cell lung cancer. Patients with this condition usually test positive for anti-collapsin response mediating protein-5 (CRMP-5). We describe a case of a 57-year-old woman with bilateral vision loss with the characteristic features of CRMP-5 PON including bilateral optic disc edema and vitreous cells. However, she was negative for anti-CRMP-5 including a negative Western blot on two occasions, but positive for Purkinje Cell Antibody (PCA)-2...
March 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
Waqar Waheed, James Boyd, Farrah Khan, Sharon L Mount, Neil M Borden, Rup Tandan
Patients with Purkinje cell cytoplasmic autoantibody type 2 (PCA-2) and collapsin response-mediator protein-5 (CRMP-5) autoantibody can present with multifocal elements of encephalomyeloneuropathy. Except for an anecdotal report, case descriptions of paraneoplastic small fibre neuropathy are lacking. We report paraneoplastic small fibre neuropathy followed by chorea associated with small cell lung cancer. A man aged 57 years with a 35 pack-year smoking history presented with painless subacute paresthesia and weight fluctuation...
August 29, 2016: BMJ Case Reports
Xiaobing Gong, Minghui Tan, Yuan Gao, Keen Chen, Guoqing Guo
CRMP family proteins (CRMPs) are abundantly expressed in the developing nervous system mediating growth cone guidance, neuronal polarity and axon elongation. CRMP‑5 has been indicated to serve a critical role in neurite outgrowth. However, the detailed mechanisms of how CRMP‑5 regulates neurite outgrowth remain unclear. In the current study, co-immunoprecipitation was used to identify the fact that CRMP‑5 interacted with the actin and tubulin cytoskeleton networks in the growth cones of developing hippocampal neurons...
February 2016: Molecular Medicine Reports
Edward J Casswell, Edward Pringle, Caroline Thuang, Mike D Sanders, Elizabeth M Graham
PURPOSE: Paraneoplastic ocular inflammation can be associated with the autoantibody against collapsin response-mediator protein-5 (anti-CRMP-5). We describe the clinical and histological features of 2 rare cases of small cell lung carcinoma (SCLC) presenting with intraocular inflammation: the first was anti-CRMP-5 positive and the second preceded the auto-antibody's discovery but with remarkably similar features. The previously unreported retinal histology is described. METHODS: Case notes review...
October 2016: Ocular Immunology and Inflammation
(no author information available yet)
[This corrects the article on p. e82 in vol. 2, PMID: 25798447.].
August 2015: Neurology® Neuroimmunology & Neuroinflammation
V Russo, F Di Meo, A Rago, A A Papa, A Molino, M Mosella, L Politano, M G Russo, G Nigro
OBJECTIVE: Myotonic dystrophy type 1 (MD1) is characterized by cardiac involvement, in about 80% of case, that predominantly affects the conduction system. Aim of our study was to evaluate the P-wave duration and dispersion (PD) in MD1 patients underwent pacemaker implantation with conserved systolic and diastolic function. PATIENTS AND METHODS: We enrolled 60 MD1 patients (age 51.3 ± 5 years; 11 females) underwent dual chamber pacemaker implantation for various grade of atrioventricular (AV) block...
April 2015: European Review for Medical and Pharmacological Sciences
Cliff W Hampton, Dina Galperin, Enrique Alvarez, Matthew S West
No abstract text is available yet for this article.
June 2015: Neurology® Neuroimmunology & Neuroinflammation
W L Reis, V C Biancardi, S Son, J Antunes-Rodrigues, J E Stern
Nitric oxide (NO) and carbon monoxide (CO) are diffusible gas messengers in the brain. Previously, we have shown their independent involvement in central fluid/electrolyte homeostasis control. In the present study, we investigated a possible functional interaction between NO/CO in the regulation of vasopressin (VP) and oxytocin (OT) magnocellular neurosecretory cells (MNCs) activity in euhydrated (EU) and dehydrated [48-h water-deprived (48WD)] rats. Using brain slices from EU and 48WD rats, we measured, by immunohistochemistry, the expression of neuronal NO synthase (nNOS, which synthesises NO) and haeme-oxygenase (HO-1, which synthesises CO) in the hypothalamic supraoptic nucleus (SON)...
February 2015: Journal of Neuroendocrinology
Mami Morita, Tatsuro Fukuhara, Hidetoshi Takahashi, Makoto Maemondo
Cancer-associated retinopathy (CAR) is one of the paraneoplastic neurological syndromes and characterised by retinal degeneration. Autoimmunity between cancer cells and retinal proteins is considered a major cause of CAR. The presence of serum autoantibodies to retinal antigens plays an important role in the diagnosis. A 60-year-old man reporting of visual disturbance and paresthaesia of extremities presented to our hospital. CT scan revealed a massive tumour in the left lower lobe of the lung. Small cell lung cancer was diagnosed histologically with bronchoscopy...
November 24, 2014: BMJ Case Reports
Adam D Norris, Lakshmi Sundararajan, Dyan E Morgan, Zachary J Roberts, Erik A Lundquist
UNC-6/Netrin is a conserved axon guidance cue that can mediate both attraction and repulsion. We previously discovered that attractive UNC-40/DCC receptor signaling stimulates growth cone filopodial protrusion and that repulsive UNC-40-UNC-5 heterodimers inhibit filopodial protrusion in C. elegans. Here, we identify cytoplasmic signaling molecules required for UNC-6-mediated inhibition of filopodial protrusion involved in axon repulsion. We show that the Rac-like GTPases CED-10 and MIG-2, the Rac GTP exchange factor UNC-73/Trio, UNC-44/Ankyrin and UNC-33/CRMP act in inhibitory UNC-6 signaling...
November 2014: Development
Sang-Hak Lee, Jae Kook Nam, Jong-Kook Park, Joo-Ho Lee, Do Sik Min, Hyo-Jeong Kuh
The multicellular spheroid (MCS) is an in vitro model which is highly representative of the avascular region of solid tumors by reflecting microenvironmental conditions in vivo. Hence, it is considered the most appropriate model for studying drug resistance. We compared chemosensitivity to 5-fluorouracil (5-FU) and differential protein expression between the 3D MCS model and the 2D monolayers using DLD-1 cells. We analyzed several significant signaling molecules through western blot analysis. Although various changes in the expression level were observed depending on the samples, we did not obtained remarkable findings...
October 2014: Oncology Reports
Fei Tan, Carol J Thiele, Zhijie Li
The collapsin response mediator proteins (CRMPs) were originally identified as mediators of semaphorin 3A signaling and neuronal differentiation. The CRMP family consists of five homologous cytosolic proteins, CRMP1-5. Altered expression levels of CRMPs have been observed in several malignant tumors, including lung, breast, colorectal, prostate, pancreatic and neuroendocrine lung cancer. The aim of the current study was to review the recent progress achieved in understanding the association between the different levels of CRMP expression in tumors and their involvement in pathological functions, such as tumor metastasis, disease progression, subtype differentiation and clinical outcome, to address the potential value of CRMPs as biomarkers for the diagnosis and prognosis of cancer patients...
May 2014: Oncology Letters
Zhisheng Ji, Minghui Tan, Yuan Gao, Jifeng Zhang, Xiaobing Gong, Guoqing Guo, Hongsheng Lin
Collapsin response mediator proteins (CRMPs) have been reported to control axonal guidance during neuronal development and degeneration. Among these proteins, CRMP-5 has been indicated to play an important role in growth cone development. However, the mechanisms underlying the linkage between growth cone development and the cytoskeleton remain to be elucidated. Here, we report that CRMP-5 interacts with tubulin to mediate growth cone development in cultured hippocampal neurons. We found that CRMP-5 physically interacted with tubulin in the growth cones of developing neurons...
2014: International Journal of Clinical and Experimental Medicine
Michiyuki Saito, Wataru Saito, Atsuhiro Kanda, Hiroshi Ohguro, Susumu Ishida
BACKGROUND: Specific cross-reacting autoimmunity against recoverin or collapsin response mediator protein (CRMP)-5 is known to cause cancer-associated retinopathy or paraneoplastic optic neuropathy, respectively. We report a rare case with small cell lung carcinoma developing bilateral neuroretinitis and unilateral focal outer retinitis positive for these antibodies. CASE PRESENTATION: A 67-year-old man developed bilateral neuroretinitis and foveal exudation in the right eye...
2014: BMC Ophthalmology
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