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Elmore SA, Aeffner F, Bangari DS, Crabbs TA, Fossey S, Gad SC, Haschek WM, Hoane JS, Janardhan K, Kovi RC, Pearse G, Wancket LM, Quist EM. Proceedings of the 2017 National Toxicology Program Satellite Symposium. Toxicol Pathol 2017; 45:799-833. [PMID: 29113559 PMCID: PMC5743204 DOI: 10.1177/0192623317733924] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The 2017 annual National Toxicology Program Satellite Symposium, entitled "Pathology Potpourri," was held in Montreal, Quebec, Canada at the Society of Toxicologic Pathology's 36th 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. Various lesions and other topics covered during the symposium included renal papillary degeneration in perinatally exposed animals, an atriocaval mesothelioma, an unusual presentation of an alveolar-bronchiolar carcinoma, a paraganglioma of the organ of Zuckerkandl (also called an extra-adrenal pheochromocytoma), the use of human muscle samples to illustrate the challenges of manual scoring of fluorescent staining, intertubular spermatocytic seminomas, medical device pathology assessment and discussion of the approval process, collagen-induced arthritis, incisor denticles, ameloblast degeneration and poorly mineralized enamel matrix, connective tissue paragangliomas, microcystin-LR toxicity, perivascular mast cells in the forebrain thalamus unrelated to treatment, and 2 cases that provided a review of the International Harmonization of Nomenclature and Diagnostic Criteria (INHAND) bone nomenclature and recommended application of the terminology in routine nonclinical toxicity studies.
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Affiliation(s)
- Susan A. Elmore
- National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina
| | | | | | - Torrie A. Crabbs
- Experimental Pathology Laboratories, Inc., Research Triangle Park, North Carolina
| | | | | | - Wanda M. Haschek
- University of Illinois, Department of Pathobiology, Urbana, Illinois
| | | | | | - Ramesh C. Kovi
- Experimental Pathology Laboratories, Inc., Research Triangle Park, North Carolina
| | - Gail Pearse
- GlaxoSmithKline, Ware, Hertfordshire, United Kingdom
| | | | - Erin M. Quist
- Experimental Pathology Laboratories, Inc., Research Triangle Park, North Carolina
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2
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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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3
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Elmore SA, Farman CA, Hailey JR, Kovi RC, Malarkey DE, Morrison JP, Neel J, Pesavento PA, Porter BF, Szabo KA, Teixeira LBC, Quist EM. Proceedings of the 2015 National Toxicology Program Satellite Symposium. Toxicol Pathol 2016; 44:502-35. [PMID: 27075180 DOI: 10.1177/0192623316631844] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The 2015 Annual National Toxicology Program Satellite Symposium, entitled "Pathology Potpourri" was held in Minneapolis, Minnesota, at the American College of Veterinary Pathologists/American Society for Veterinary Clinical Pathology/Society of Toxicologic Pathology combined meeting. The goal of this symposium is to present and discuss diagnostic pathology challenges or nomenclature issues. Because of the combined meeting, both laboratory and domestic animal cases were presented. This article presents summaries of the speakers' talks, including challenging diagnostic cases or nomenclature issues that were presented, along with select images that were used for audience voting and discussion. Some lesions and topics covered during the symposium included hepatocellular lesions, a proposed harmonized diagnostic approach to rat cardiomyopathy, crop milk in a bird, avian feeding accoutrement, heat exchanger in a tuna, metastasis of a tobacco carcinogen-induced pulmonary carcinoma, neurocytoma in a rat, pituicytoma in a rat, rodent mammary gland whole mounts, dog and rat alveolar macrophage ultrastructure, dog and rat pulmonary phospholipidosis, alveolar macrophage aggregation in a dog, degenerating yeast in a cat liver aspirate, myeloid leukemia in lymph node aspirates from a dog, Trypanosoma cruzi in a dog, solanum toxicity in a cow, bovine astrovirus, malignant microglial tumor, and nomenclature challenges from the Special Senses International Harmonization of Nomenclature and Diagnostic Criteria Organ Working Group.
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Affiliation(s)
- Susan A Elmore
- National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
| | | | | | - Ramesh C Kovi
- Experimental Pathology Laboratories, Inc., Research Triangle Park, North Carolina, USA
| | - David E Malarkey
- National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
| | | | - Jennifer Neel
- College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA
| | - Patricia A Pesavento
- School of Veterinary Medicine, University of California at Davis, Davis, California, USA
| | | | | | | | - Erin M Quist
- National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
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4
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Elmore SA, Cora MC, Gruebbel MM, Hayes SA, Hoane JS, Koizumi H, Peters R, Rosol TJ, Singh BP, Szabo KA. Proceedings of the 2014 National Toxicology Program Satellite Symposium. Toxicol Pathol 2014; 43:10-40. [PMID: 25385331 DOI: 10.1177/0192623314555526] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The 2014 annual National Toxicology Program (NTP) Satellite Symposium, entitled "Pathology Potpourri" was held in Washington, D.C., in advance of the Society of Toxicologic Pathology's 33rd annual meeting. The goal of this annual NTP Symposium is to present current diagnostic pathology or nomenclature issues to the toxicologic pathology community. This article presents summaries of the speakers' presentations, including diagnostic or nomenclature issues that were presented, along with select images that were used for audience voting and discussion. Some lesions and topics covered during the symposium included a pulmonary mucinous adenocarcinoma in a male B6C3F1 mouse; plexiform vasculopathy in Wistar Han (Crl:WI[Han]) rats; staging of the estrous cycle in rats and mice; peri-islet fibrosis, hemorrhage, lobular atrophy and inflammation in male Sprague-Dawley (SD) rats; retinal dysplasia in Crl:WI[Han] rats and B6C3F1 mice; multicentric lymphoma with intravascular microemboli and tumor lysis syndrome, and 2 cases of myopathy and vascular anomaly in Tg.rasH2 mice; benign thymomas in Crl:WI[Han] rats; angiomatous lesions in the mesenteric lymph nodes of Crl:WI[Han] rats; an unusual foveal lesion in a cynomolgous monkey; and finally a series of nomenclatures challenges from the endocrine International Harmonization of Nomenclature and Diagnostic Criteria (INHAND) Organ Working Group (OWG).
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Affiliation(s)
- Susan A Elmore
- National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
| | - Michelle C Cora
- National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
| | - Margarita M Gruebbel
- Experimental Pathology Laboratories, Inc., Research Triangle Park, North Carolina, USA
| | - Schantel A Hayes
- Charles River Laboratories, Pathology Associates, Durham, North Carolina, USA
| | - Jessica S Hoane
- Charles River Laboratories, Pathology Associates, Durham, North Carolina, USA
| | | | - Rachel Peters
- Takeda Pharmaceuticals International Co., Cambridge, Massachusetts, USA
| | | | - Bhanu P Singh
- Janssen Research & Development, Spring House, Pennsylvania, USA
| | - Kathleen A Szabo
- Charles River Laboratories, Pathology Associates, Durham, North Carolina, USA
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Brayton CF, Treuting PM, Ward JM. Pathobiology of aging mice and GEM: background strains and experimental design. Vet Pathol 2014; 49:85-105. [PMID: 22215684 DOI: 10.1177/0300985811430696] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The use of induced and spontaneous mutant mice and genetically engineered mice (and combinations thereof) to study cancers and other aging phenotypes to advance improved functional human life spans will involve studies of aging mice. Genetic background contributes to pathology phenotypes and to causes of death as well as to longevity. Increased recognition of expected phenotypes, experimental variables that influence phenotypes and research outcomes, and experimental design options and rationales can maximize the utility of genetically engineered mice (GEM) models to translational research on aging. This review aims to provide resources to enhance the design and practice of chronic and longevity studies involving GEM. C57BL6, 129, and FVB/N strains are emphasized because of their widespread use in the generation of knockout, transgenic, and conditional mutant GEM. Resources are included also for pathology of other inbred strain families, including A, AKR, BALB/c, C3H, C57L, C58, CBA, DBA, GR, NOD.scid, SAMP, and SJL/J, and non-inbred mice, including 4WC, AB6F1, Ames dwarf, B6, 129, B6C3F1, BALB/c,129, Het3, nude, SENCAR, and several Swiss stocks. Experimental strategies for long-term cross-sectional and longitudinal studies to assess causes of or contributors to death, disease burden, spectrum of pathology phenotypes, longevity, and functional healthy life spans (health spans) are compared and discussed.
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Affiliation(s)
- C F Brayton
- Johns Hopkins University, 733 North Broadway, BRB Ste 851, Baltimore, MD 21205, USA.
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Surh I, Rao DB, Cesta MF, Hébert CD, Mann JF, Cunny H, Kissling GE, Malarkey D, Chhabra RS. Species and gender differences in the carcinogenic activity of trimethylolpropane triacrylate in rats and mice. Food Chem Toxicol 2014; 66:254-61. [PMID: 24503412 DOI: 10.1016/j.fct.2014.01.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 01/27/2014] [Accepted: 01/28/2014] [Indexed: 11/28/2022]
Abstract
Trimethylolpropane triacrylate (TMPTA) is a multifunctional monomer with industrial applications. To determine the carcinogenic potential, male and female F344/N rats and B6C3F1/N mice were administered TMPTA (0, 0.3, 1.0, or 3.0mg/kg) in acetone dermally for 2 years. There were no differences in the body weights and survival in the treated animals compared to controls. Nonneoplastic skin lesions at the site of application included epidermal hyperplasia and hyperkeratosis in both rats and mice. There were no incidences of tumors at the site of application in rats and mice. Rare malignant liver neoplasms were observed in female mice that included hepatoblastoma in the 0.3 and 3.0mg/kg groups, and hepatocholangiocarcinoma in the 1.0 and 3.0mg/kg groups. The incidences of uterine stromal polyp and stromal polyp or stromal sarcoma (combined) in female mice occurred with positive trends and the incidences were significantly increased in the 3.0mg/kg group. A marginal increase in the incidences of malignant mesothelioma in male rats may have been related to TMPTA treatment. In conclusion, our studies show that TMPTA is a dermal irritant in both rats and mice of either sex. Increased incidences of tumor formation were observed in female mice and male rats.
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Affiliation(s)
- Inok Surh
- National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA.
| | - Deepa B Rao
- National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA; Integrated Laboratory Systems, Inc., Research Triangle Park, NC 27709, USA
| | - Mark F Cesta
- National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | | | - Jill F Mann
- Southern Research Institute, Birmingham, AL 35255, USA
| | - Helen Cunny
- National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Grace E Kissling
- National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - David Malarkey
- National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Rajendra S Chhabra
- National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
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Elmore SA, Boyle MC, Boyle MH, Cora MC, Crabbs TA, Cummings CA, Gruebbel MM, Johnson CL, Malarkey DE, McInnes EF, Nolte T, Shackelford CC, Ward JM. Proceedings of the 2013 National Toxicology Program Satellite Symposium. Toxicol Pathol 2013; 42:12-44. [PMID: 24334674 DOI: 10.1177/0192623313508020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The 2013 annual National Toxicology Program (NTP) Satellite Symposium, entitled "Pathology Potpourri," was held in Portland, Oregon, in advance of the Society of Toxicologic Pathology's 32nd annual meeting. The goal of the NTP Symposium is to present current diagnostic pathology or nomenclature issues to the toxicologic pathology community. This article presents summaries of the speakers' presentations, including diagnostic or nomenclature issues that were presented, along with select images that were used for audience voting and discussion. Some lesions and topics covered during the symposium included a caudal tail vertebra duplication in mice; nephroblastematosis in rats; ectopic C cell tumor in a hamster; granular cell aggregates/tumor in the uterus of a hamster; Pneumocystis carinii in the lung of a rat; iatrogenic chronic inflammation in the lungs of control rats; hepatoblastoma arising within an adenoma in a mouse; humoral hypercalcemia of benignancy in a transgenic mouse; acetaminophen-induced hepatotoxicity in rats; electron microscopy images of iatrogenic intraerythrocytic inclusions in transgenic mice; questionable hepatocellular degeneration/cell death/artifact in rats; atypical endometrial hyperplasia in rats; malignant mixed Müllerian tumors/carcinosarcomas in rats; differential diagnoses of proliferative lesions of the intestine of rodents; and finally obstructive nephropathy caused by melamine poisoning in a rat.
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Affiliation(s)
- Susan A Elmore
- 1National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, USA
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8
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Elmore SA, Hoenerhoff M, Katsuta O, Kokoshima H, Maronpot R, Nagai H, Satoh H, Tanaka Y, Tochitani T, Tsuchiya S, Yoshizawa K. Proceedings of the 2013 Joint JSTP/NTP Satellite Symposium. J Toxicol Pathol 2013; 26:231-57. [PMID: 23914068 PMCID: PMC3695348 DOI: 10.1293/tox.26.231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2013] [Accepted: 04/04/2013] [Indexed: 12/05/2022] Open
Abstract
The first joint Japanese Society of Toxicologic Pathology (JSTP) and National Toxicology
Program (NTP) Satellite Symposium, entitled “Pathology Potpourri,” was held on January
29th at Okura Frontier Hotel in Tsukuba, Ibaraki, Japan, in advance of the
JSTP’s 29th Annual Meeting. The goal of this Symposium was to present current
diagnostic pathology or nomenclature issues to the toxicologic pathology community. This
article presents summaries of the speakers’ presentations, including diagnostic or
nomenclature issues that were presented, select images that were used for audience voting
or discussion, and the voting results. Some lesions and topics covered during the
symposium include: treatment-related atypical hepatocellular foci of cellular alteration
in B6C3F1 mice; purulent ventriculoencephalitis in a young BALB/c mouse; a subcutaneous
malignant schwannoma in a RccHan:WIST rat; spontaneous nasal septum
hyalinosis/eosinophilic substance in B6C3F1 mice; a rare pancreatic ductal cell adenoma in
a young Lewis rat; eosinophilic crystalline pneumonia in a transgenic mouse model; hyaline
glomerulopathy in two female ddY mice; treatment-related intrahepatic erythrocytes in
B6C3F1 mice; treatment-related subendothelial hepatocytes in B6C3F1 mice; spontaneous
thyroid follicular cell vacuolar degeneration in a cynomolgus monkey; congenital hepatic
fibrosis in a 1-year-old cat; a spontaneous adenocarcinoma of the middle ear in a young
Crl:CD(SD) rat; and finally a series of cases illustrating some differences between
cholangiofibrosis and cholangiocarcinoma in Sprague Dawley and F344 rats.
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Affiliation(s)
- Susan A Elmore
- National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, 111 T.W. Alexander Drive, Research Triangle Park, North Carolina 27709, USA
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9
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Elmore SA, Berridge BR, Boyle MC, Cora MC, Hoenerhoff MJ, Kooistra L, Laast VA, Morrison JP, Rao D, Rinke M, Yoshizawa K. Proceedings of the 2012 National Toxicology Program Satellite Symposium. Toxicol Pathol 2013; 41:151-80. [PMID: 23262640 PMCID: PMC4195569 DOI: 10.1177/0192623312467102] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The 2012 annual National Toxicology Program (NTP) Satellite Symposium, entitled "Pathology Potpourri," was held in Boston in advance of the Society of Toxicologic Pathology's 31st annual meeting. The goal of the NTP Symposium is to present current diagnostic pathology or nomenclature issues to the toxicologic pathology community. This article presents summaries of the speakers' presentations, including diagnostic or nomenclature issues that were presented, along with select images that were used for audience voting or discussion. Some lesions and topics covered during the symposium include eosinophilic crystalline pneumonia in a transgenic mouse model; differentiating adrenal cortical cystic degeneration from adenoma; atypical eosinophilic foci of altered hepatocytes; differentiating cardiac schwannoma from cardiomyopathy; diagnosis of cardiac papillary muscle lesions; intrahepatocytic erythrocytes and venous subendothelial hepatocytes; lesions in Rathke's cleft and pars distalis; pernicious anemia and megaloblastic disorders; embryonic neuroepithelial dysplasia, holoprosencephaly and exencephaly; and INHAND nomenclature for select cardiovascular lesions.
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Affiliation(s)
- Susan A Elmore
- National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709, USA.
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10
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Boorman G, Crabbs TA, Kolenda-Roberts H, Latimer K, Miller AD, Muravnick KB, Nyska A, Ochoa R, Pardo ID, Ramot Y, Rao DB, Schuh J, Suttie A, Travlos GS, Ward JM, Wolf JC, Elmore SA. Proceedings of the 2011 National Toxicology Program Satellite Symposium. Toxicol Pathol 2011; 40:321-44. [PMID: 22089839 DOI: 10.1177/0192623311427713] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The 2011 annual National Toxicology Program (NTP) Satellite Symposium, entitled "Pathology Potpourri," was held in Denver, Colorado in advance of the Society of Toxicologic Pathology's 30th Annual Meeting. The goal of the NTP Symposium is to present current diagnostic pathology or nomenclature issues to the toxicologic pathology community. This article presents summaries of the speakers' presentations, including diagnostic or nomenclature issues that were presented, along with select images that were used for audience voting or discussion. Some lesions and topics covered during the symposium include: proliferative lesions from various fish species including ameloblastoma, gas gland hyperplasia, nodular regenerative hepatocellular hyperplasia, and malignant granulosa cell tumor; spontaneous cystic hyperplasia in the stomach of CD1 mice and histiocytic aggregates in the duodenal villous tips of treated mice; an olfactory neuroblastoma in a cynomolgus monkey; various rodent skin lesions, including follicular parakeratotic hyperkeratosis, adnexal degeneration, and epithelial intracytoplasmic accumulations; oligodendroglioma and microgliomas in rats; a diagnostically challenging microcytic, hypochromic, responsive anemia in rats; a review of microcytes and microcytosis; nasal lesions associated with green tea extract and Ginkgo biloba in rats; corneal dystrophy in Dutch belted rabbits; valvulopathy in rats; and lymphoproliferative disease in a cynomolgus monkey.
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Affiliation(s)
- Gary Boorman
- Covance Laboratories, Inc., Chantilly, Virginia, USA
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11
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Thoolen B, Maronpot RR, Harada T, Nyska A, Rousseaux C, Nolte T, Malarkey DE, Kaufmann W, Küttler K, Deschl U, Nakae D, Gregson R, Vinlove MP, Brix AE, Singh B, Belpoggi F, Ward JM. Proliferative and nonproliferative lesions of the rat and mouse hepatobiliary system. Toxicol Pathol 2011; 38:5S-81S. [PMID: 21191096 DOI: 10.1177/0192623310386499] [Citation(s) in RCA: 398] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The INHAND Project (International Harmonization of Nomenclature and Diagnostic Criteria for Lesions in Rats and Mice) is a joint initiative of the Societies of Toxicologic Pathology from Europe (ESTP), Great Britain (BSTP), Japan (JSTP) and North America (STP) to develop an internationally-accepted nomenclature for proliferative and non-proliferative lesions in laboratory animals. The purpose of this publication is to provide a standardized nomenclature and differential diagnosis for classifying microscopic lesions observed in the hepatobiliary system of laboratory rats and mice, with color microphotographs illustrating examples of some lesions. The standardized nomenclature presented in this document is also available for society members electronically on the internet (http://goreni.org). Sources of material included histopathology databases from government, academia, and industrial laboratories throughout the world. Content includes spontaneous and aging lesions as well as lesions induced by exposure to test materials. A widely accepted and utilized international harmonization of nomenclature for lesions of the hepatobiliary system in laboratory animals will decrease confusion among regulatory and scientific research organizations in different countries and provide a common language to increase and enrich international exchanges of information among toxicologists and pathologists.
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Affiliation(s)
- Bob Thoolen
- Global Pathology Support, The Hague, The Netherlands.
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12
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Adams ET, Auerbach S, Blackshear PE, Bradley A, Gruebbel MM, Little PB, Malarkey D, Maronpot R, McKay JS, Miller RA, Moore RR, Morrison JP, Nyska A, Ramot Y, Rao D, Suttie A, Wells MY, Willson GA, Elmore SA. Proceedings of the 2010 National Toxicology Program Satellite Symposium. Toxicol Pathol 2011; 39:240-66. [PMID: 21177527 PMCID: PMC3096448 DOI: 10.1177/0192623310391680] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The 2010 annual National Toxicology Program (NTP) Satellite Symposium, entitled "Pathology Potpourri," was held in Chicago, Illinois, in advance of the scientific symposium sponsored jointly by the Society of Toxicologic Pathology (STP) and the International Federation of Societies of Toxicologic Pathologists (IFSTP). The goal of the annual NTP Symposium is to present current diagnostic pathology or nomenclature issues to the toxicologic pathology community. This article presents summaries of the speakers' presentations, including diagnostic or nomenclature issues that were presented, along with select images that were used for voting or discussion. Some topics covered during the symposium included a comparison of rat and mouse hepatocholangiocarcinoma, a comparison of cholangiofibrosis and cholangiocarcinoma in rats, a mixed pancreatic neoplasm with acinar and islet cell components, an unusual preputial gland tumor, renal hyaline glomerulopathy in rats and mice, eosinophilic substance in the nasal septum of mice, INHAND nomenclature for proliferative and nonproliferative lesions of the CNS/PNS, retinal gliosis in a rat, fibroadnexal hamartoma in rats, intramural plaque in a mouse, a treatment-related chloracne-like lesion in mice, and an overview of mouse ovarian tumors.
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Affiliation(s)
- E. Terence Adams
- Experimental Pathology Laboratories, Inc., Research Triangle Park, NC, USA
| | - Scott Auerbach
- National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
| | | | - Alys Bradley
- Charles River Laboratories, Tranent, Edinburgh, United Kingdom
| | | | - Peter B. Little
- Charles River Laboratories, Pathology Associates, Durham, NC, USA
| | - David Malarkey
- National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
| | | | | | - Rodney A. Miller
- Experimental Pathology Laboratories, Inc., Research Triangle Park, NC, USA
| | - Rebecca R. Moore
- Experimental Pathology Laboratories, Inc., Research Triangle Park, NC, USA
| | | | - Abraham Nyska
- Consultant in Toxicological Pathology, Sackler School of Medicine, Tel Aviv University, Israel
| | - Yuval Ramot
- Department of Dermatology, Hadassah—Hebrew University Medical Center, Jerusalem, Israel
| | - Deepa Rao
- National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
- Integrated Laboratory Systems, Inc., Research Triangle Park, NC, USA
| | | | | | | | - Susan A. Elmore
- National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
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13
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Weber K, Garman RH, Germann PG, Hardisty JF, Krinke G, Millar P, Pardo ID. Classification of Neural Tumors in Laboratory Rodents, Emphasizing the Rat. Toxicol Pathol 2010; 39:129-51. [DOI: 10.1177/0192623310392249] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Neoplasms of the nervous system, whether spontaneous or induced, are infrequent in laboratory rodents and very rare in other laboratory animal species. The morphology of neural tumors depends on the intrinsic functions and properties of the cell type, the interactions between the neoplasm and surrounding normal tissue, and regressive changes. The incidence of neural neoplasms varies with sex, location, and age of tumor onset. Although the onset of spontaneous tumor development cannot be established in routine oncogenicity studies, calculations using the time of diagnosis (day of death) have revealed significant differences in tumor biology among different rat strains. In the central nervous system, granular cell tumors (a meningioma variant), followed by glial tumors, are the most common neoplasms in rats, whereas glial cell tumors are observed most frequently in mice. Central nervous system tumors usually affect the brain rather than the spinal cord. Other than adrenal gland pheochromocytomas, the most common neoplasms of the peripheral nervous system are schwannomas. Neural tumors may develop in the central nervous system and peripheral nervous system from other cell lineages (including extraneural elements like adipose tissue and lymphocytes), but such lesions are very rare in laboratory animals.
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Affiliation(s)
- Klaus Weber
- Department of Pathology, Harlan Laboratories Ltd., Itingen, Switzerland
| | | | | | - Jerry F. Hardisty
- EPL Experimental Pathology Laboratories, Inc., Research Triangle Park, NC, USA
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