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Elmore SA, Chen VS, Hayes-Bouknight S, Hoane JS, Janardhan K, Kooistra LH, Nolte T, Szabo KA, Willson GA, Wolf JC, Malarkey DE. Proceedings of the 2016 National Toxicology Program Satellite Symposium. Toxicol Pathol 2016; 45:11-51. [PMID: 27821709 DOI: 10.1177/0192623316672074] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The 2016 annual National Toxicology Program Satellite Symposium, entitled "Pathology Potpourri" was held in San Diego, CA, at the Society of Toxicologic Pathology's (STP) 35th annual meeting. The goal of this symposium was to present and discuss challenging diagnostic pathology and/or nomenclature issues. This article presents summaries of the speakers' talks, along with select images that were used by the audience for voting and discussion. Some lesions and topics covered during the symposium included malignant glioma and histiocytic sarcoma in the rodent brain; a new statistical method designed for histopathology data evaluation; uterine stromal/glandular polyp in a rat; malignant plasma cell tumor in a mouse brain; Schwann cell proliferative lesions in rat hearts; axillary schwannoma in a cat; necrosis and granulomatous inflammation in a rat brain; adenoma/carcinoma in a rat adrenal gland; hepatocyte maturation defect and liver/spleen hematopoietic defects in an embryonic mouse; distinguishing malignant glioma, malignant mixed glioma, and malignant oligodendroglioma in the rat; comparison of mammary gland whole mounts and histopathology from mice; and discussion of the International Harmonization of Nomenclature and Diagnostic Criteria collaborations.
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Affiliation(s)
- Susan A Elmore
- 1 National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
| | - Vivian S Chen
- 2 Charles River Laboratories, Inc., Durham, North Carolina, USA
| | | | - Jessica S Hoane
- 2 Charles River Laboratories, Inc., Durham, North Carolina, USA
| | | | | | - Thomas Nolte
- 4 Boehringer Ingelheim Pharma GmbH & Co. KG, Ingelheim, Germany
| | | | - Gabrielle A Willson
- 5 Experimental Pathology Laboratories, Inc., Research Triangle Park, North Carolina, USA
| | - Jeffrey C Wolf
- 6 Experimental Pathology Laboratories, Inc., Sterling, Virginia, USA
| | - David E Malarkey
- 1 National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
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Gerloff C, Knappe UJ, Hettmannsperger U, Duffner TK, Volk B. Intrastriatal cerebellar grafts: differentiation of cerebellar anlage and sprouting of Purkinje cell axons. BRAIN RESEARCH. DEVELOPMENTAL BRAIN RESEARCH 1993; 74:30-40. [PMID: 8403373 DOI: 10.1016/0165-3806(93)90080-t] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Pieces of cerebellar primordia were obtained from G16 (day 16 of gestation) rat fetuses and stereotaxically injected into the striatum of adult Wistar rats. The transplants were allowed to integrate with the host brain for 2 h up to 6 months after implantation. Ninety four out of 105 transplants perfectly integrated with the host brain (90%) and established the typical trilaminar histoarchitecture of cerebellar cortex. The transplants were sufficiently vascularized. Vessels seen within the grafts provided all ultrastructural elements of a blood-brain barrier. Light microscopic evaluation of graft development showed no considerable retardation of cerebellar histogenesis. Electron microscopic examination disclosed normal ultrastructure of cerebellar neurons, as well as elements of regular synaptic organization. The topic of efferent graft-to-host projections was investigated 2.5 months after transplantation using the monoclonal Purkinje cell marker anti-Leu-4 (CD3). This method allowed us to detect immunoreactive, morphologically intact axons of grafted Purkinje cells running over long distances (at least 500 microns) within the host striatum. Whilst afferent but in no case efferent connections of heterotopic cerebellar transplants had been demonstrated elsewhere, we could now prove the reciprocal modus of graft-host interaction with heterotopic cerebellar grafts.
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Affiliation(s)
- C Gerloff
- Neuropathologische Abteilung, Albert-Ludwigs-Universität Freiburg, Germany
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