1983
DOI: 10.1093/ajcp/79.1.37
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An Immunoperoxidase Investigation of S-100 Protein in Granular Cell Myoblastomas: Evidence for Schwann Cell Derivation

Abstract: Five cases of granular cell myoblastoma have been studied for detection of the neuroectodermal protein S-100. Immunoperoxidase staining on paraffin sections, using an antibody raised against calf brain S-100 protein, was utilized to demonstrate positive cytoplasmic and nuclear reactivity in all cases. Negative staining in adjacent muscle and connective tissue elements was contrasted to in situ control staining of Schwann cells in peripheral nerves and staining of Langerhans cells and melanocytes in overlying s… Show more

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Cited by 122 publications
(38 citation statements)
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“…Recently, the origin of GCTs was suggested to be a Schwann cell [7,9], based on positive reactions upon immunohistochemical staining with primary antibodies such as S-100 protein [2,15], NSE [21] and MBP [13,20]. However, the results of LFB and immunostainings for S-100 protein, NSE, GFAP, vimentin and desmin were all negative in the present study.…”
contrasting
confidence: 50%
See 1 more Smart Citation
“…Recently, the origin of GCTs was suggested to be a Schwann cell [7,9], based on positive reactions upon immunohistochemical staining with primary antibodies such as S-100 protein [2,15], NSE [21] and MBP [13,20]. However, the results of LFB and immunostainings for S-100 protein, NSE, GFAP, vimentin and desmin were all negative in the present study.…”
contrasting
confidence: 50%
“…Recently, GCTs in humans have been suggested to be of Schwann cell origin [7,9], based on their characteristic electron microscopic features and positive reactions upon immunohistochemical staining with primary antibodies such as S-100 protein [2,15], neuron-specific enolase (NSE) [22] and myelin basic protein (MBP) [13,20].…”
mentioning
confidence: 99%
“…Mais recentemente, a teoria da célula de Schwann foi constatada pela coloração positiva do citoplasma e núcleo de células granulares para proteí-na S-100. As colorações adicionais para as células granulares de proteína mielina e glicoproteína mielo-associadas confirmam esta hipótese 5 . A incidência é maior no sexo feminino do que no masculino (1,3:1) e a idade média é de 31 a 49 anos 3 .…”
Section: Evolução E Seguimentounclassified
“…1 Apresenta recidiva em torno de 5-10% após sua ressecção cirúrgica. 4,5 O diagnóstico na maioria das vezes é acidental, feito através da endoscopia. A aparência endoscópica do TCG assemelha-se a um pólipo séssil (menos frequentemente como pólipo pediculado), localizado em qualquer parte entre o reto e o ceco, preferencialmente na área anorretal e cólon direito 5,8 .…”
Section: Evolução E Seguimentounclassified
“…The histologic and ultra structural features of granular cells of congenital epulis have been well described in detail (7,10,16,18,19,30,33). Recently, non congenital granular cell tumors (granular cell myoblastomas) have been shown by immunohistochemical means to contain CEA (15,20,29), vimentin (21), S-100 protein (2,3,8,14,25,27,35,36,38,40,45), neuron specific enolase (27) (Figs. 1A, B).…”
mentioning
confidence: 98%