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Neuropeptide- and tyrosine hydroxylase-immunoreactive nerve fibers in painful Morton's neuromas.

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We examined the expression of three neuropeptides that have been implicated in nociceptive transmission, and the sympathetic nerve fiber marker tyrosine hydroxylase, in 11 painful human Morton's neuromas, using immunohistochemistry. Antibodies against the neural markers RT97 and PGP 9.5 were used to

A novel point mutation of the RET protooncogene involving the second intracellular tyrosine kinase domain in a family with medullary thyroid carcinoma.

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Hereditary medullary thyroid carcinoma, a tumor that arises from the parafollicular cells of the thyroid gland, occurs in isolation (as in familial medullary thyroid carcinoma), in association with hyperparathyroidism and pheochromocytoma (as in multiple endocrine neoplasia type 2A), or in

Multiple endocrine neoplasia type 2B (mucosal neuroma syndrome, Wagenmann-Froboese syndrome).

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Multiple endocrine neoplasia type 2B (MEN 2B), or the mucosal neuroma syndrome, is an autosomal dominant hamartoneoplastic syndrome. Features include multiple mucosal neuromas, phaeochromocytoma, medullary thyroid carcinoma, and Marfanoid body habitus with a characteristic dysmorphic facies. The

Peptides and neuromas: calcitonin gene-related peptide, substance P, and mast cells in a mechanosensitive human sural neuroma.

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We examined and compared a mechanosensitive human sural neuroma and a contralateral sural nerve collected simultaneously from a patient involved in a diabetic neuropathy research protocol. Using indirect immunofluorescence staining. we identified a striking difference in the content within axons of

Alterations in neuropeptide Y, tyrosine hydroxylase, and Y-receptor subtype distribution following spinal nerve injury to rats.

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Recent animal models of experimental nerve injury have proven useful in evaluating potential sympathetic involvement in neuropathic pain syndromes. We have employed a widely adopted unilateral L5/L6 spinal nerve ligation model to compare the development of mechanical allodynia with neurochemical

Sensory and sympathetic nerve fibers undergo sprouting and neuroma formation in the painful arthritic joint of geriatric mice.

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BACKGROUND Although the prevalence of arthritis dramatically increases with age, the great majority of preclinical studies concerning the mechanisms that drive arthritic joint pain have been performed in young animals. One mechanism hypothesized to contribute to arthritic pain is ectopic nerve

Single missense mutation in the tyrosine kinase catalytic domain of the RET protooncogene is associated with multiple endocrine neoplasia type 2B.

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Multiple endocrine neoplasia type 2B (MEN 2B) is a human cancer syndrome characterized by medullary thyroid carcinoma (MTC), pheochromocytomas, mucosal neuromas, ganglioneuromas of the intestinal tract, and skeletal and ophthalmic abnormalities. It appears both as an inherited disorder and as de

Structural basis of sympathetic-sensory coupling in rat and human dorsal root ganglia following peripheral nerve injury.

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Tyrosine hydroxylase immunocytochemistry was used to reveal the sympathetic postganglionic axons that sprout to form basket-like skeins around the somata of some primary sensory neurons in dorsal root ganglia (DRGs) following sciatic nerve injury. Ultrastructural observations in rats revealed that

Co-segregation of MEN2 and Hirschsprung's disease: the same mutation of RET with both gain and loss-of-function?

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Multiple endocrine neoplasia type 2 (MEN2) and Hirschsprung's disease (HSCR) are two dominantly inherited neurocristopathies ascribed to mutations in the RET gene [Chakravarti, 1996; Pasini et al., 1996; Eng and Mulligan, 1997]. MEN2 is a cancer syndrome comprising three related clinical subtypes:

Adrenal ganglioneuromas in children with multiple endocrine neoplasia type 2: a report of two cases.

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BACKGROUND Pheochromocytomas of the adrenal gland are a common component of the multiple endocrine neoplasia type 2 (MEN2) syndromes. However, pure adrenal ganglioneuromas, an extremely rare pediatric tumor of neural crest origin composed of mature ganglion cells, have never been reported in

[Neural crest and multiple endocrinopathies].

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Multiple endocrine neoplasia type 2 (MEN 2) is a cancer syndrome which comprises three related disorders, MEN type 2A (MEN 2A), type 2B (MEN 2B) and familial medullary thyroid carcinoma (FMTC), MEN 2A is characterized by the association of MTC, a tumour arising from thyroid C-cells, pheochromocytoma

Presence of the 918 mutation in the RET proto-oncogene in a Mexican patient with multiple endocrine neoplasia type 2B.

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The dominantly inherited Multiple Endocrine Neoplasia cancer syndrome type 2B (MEN2B) is characterized by the presence of medullary thyroid carcinoma (MTC), phaechromocytoma (PHAEO), mucosal neuromas, ganglioneuromas of the intestinal tract, skeletal and ophthalmic abnormalities. MEN2B has been

Germ line mutation in the RET proto-oncogene associated with familial multiple endocrine neoplasia type 2B: a case report.

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Multiple endocrine neoplasia type 2 (MEN 2) is a dominantly inherited cancer syndrome. MEN 2B is characterized by the combined occurrence of medullary thyroid carcinoma (MTC), pheochromocytoma, mucosal neuroma and Marfanoid habitus. Recently, a missense mutation in codon 918 of the proto-RET has

Frequent expression of 75 kDa nerve growth factor receptor and phosphotyrosine in human peripheral nerve tumours: an immunohistochemical study on paraffin-embedded tissues.

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One hundred and three benign, and 10 malignant peripheral nerve tumours were examined immunohistochemically for expression of 75 kDa nerve growth factor receptor (NGFR). In benign tumours NGFR was demonstrated at 61% in neurinoma, 71% in neurofibroma, 93% in neurofibromatosis and 90% in traumatic

A two-hit model for development of multiple endocrine neoplasia type 2B by RET mutations.

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Multiple endocrine neoplasia (MEN) type 2B mutations have been reported at methionine 918 or alanine 883 in the tyrosine kinase domain of the RET proto-oncogene. Recently, a new combination of two germline missense mutations at valine 804 and tyrosine 806 was identified in a patient with MEN 2B-like

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