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Harderian Gland - Atrophy
comment:
Harderian gland atrophy (with or without concurrent fibrosis) results from various causes, including trauma from retro-bulbar bleeding procedures; genetic mutations; nutritional deficiencies; as a reaction to foreign bodies or accretions of excess porphyrin secretory material; or as a sequel to degeneration or inflammation from various causes. The lesion is characterized by alveoli that are shrunken to slightly widened, tortuous, and lined by variably flattened epithelial cells ( Figure 1
and
Figure 2
). Atrophy is often accompanied by interstitial fibrosis.recommendation:
Harderian gland atrophy should be diagnosed and assigned a severity grade whenever present. Any associated reactive fibrosis should not be diagnosed separately unless warranted by severity, but should be described in the pathology narrative. Other associated lesions (such as inflammation) should be diagnosed separately. If atrophy is a main component of another lesion (such as inflammation or fibrosis), it need not be diagnosed separately (unless warranted by severity), but should be described in the pathology narrative.references:
Botts S, Jokinen M, Gaillard ET, Elwell MR, Mann PC. 1999. Salivary, Harderian, and lacrimal glands. In: Pathology of the Mouse: Reference and Atlas (Maronpot RR, Boorman GA, Gaul BW, eds). Cache River Press, Vienna, IL, 49-79. Abstract: http://www.cacheriverpress.com/books/pathmouse.htm
Krinke GJ. 1991. Atrophy and sclerosis. Harderian gland, rat. In: Eye and Ear (Jones TC, Mohr U, Hunt RD, eds). ILSI Monographs on the Pathology of Laboratory Animals. International Life Sciences Institute Press, Washington, DC, 137-140.
Krinke GJ, Schaetti PR, Krinke A. 1996. Nonneoplastic and neoplastic changes in the Harderian and lacrimal glands. In: Pathobiology of the Aging Mouse, Vol 2 (Mohr U, Dungworth DL, Capen CC, Carlton WW, Sundberg JP, Ward JM, eds). International Life Sciences Institute Press, Washington, DC, 139-152.
Lambert RA, Yudkin AM. 1923. Changes in the paraocular glands accompanying the ocular lesions which result from a deficiency of vitamine A. J Exp Med 38:25-32. Abstract: http://www.ncbi.nlm.nih.gov/pubmed/19868768
National Toxicology Program. 1983. NTP TR-244. Toxicology and Carcinogenesis Studies of a Polybrominated Biphenyl Mixture (Firemaster FF-1) in F344/N Rats and B6C3F1 Mice (Gavage Studies). NTP, Research Triangle Park, NC. Abstract: http://ntp.niehs.nih.gov/go/7095
National Toxicology Program. 1997. NTP TR-461. Toxicology and Carcinogenesis Studies of Nitromethane (CAS No. 75-52-5) in F344/N Rats and B6C3F1 Mice (Inhalation Studies). NTP, Research Triangle Park, NC. Full Text: http://ntp.niehs.nih.gov/ntp/htdocs/LT_rpts/tr461.pdf
Percy DH, Wojcinski ZW, Schunk MK. 1989. Sequential changes in the Harderian and exorbital lacrimal glands in Wistar rats infected with sialodacryoadenitis virus. Vet Pathol 26:238–245. Full Text: http://vet.sagepub.com/content/26/3/238.full.pdf
Puk O, Esposito I, Söker T, Löster J, Budde B, Nürnberg P, Michel-Soewarto D, Fuchs H, Wolf E, Hrabé de Angelis M, Grew J. 2009. A new Fgf10 mutation in the mouse leads to atrophy of the Harderian gland and slit-eye phenotype in heterozygotes: A novel model for dry-eye disease? Invest Ophthalmol Vis Sci 50:4311–4318. Full Text: http://www.iovs.org/content/50/9/4311.full
Van Herck H, Baumans V, Van Der Craats NR, Hesp APM, Meijer GW, Van Tintelen G, Walvoorts HC, Beynen AC. 1992. Histological changes in the orbital region of rats after orbital puncture. Lab Anim 26:53-58. Abstract: http://lan.sagepub.com/content/26/1/53.short
Yoshitomi K, Boorman GA. 1990. Eye and associated glands. In: Pathology of the Fischer Rat: Reference and Atlas (Boorman GA, Eustis SL, Elwell MR, Montgomery CA, MacKenzie WF, eds). Academic Press, San Diego, CA, 239-260. Abstract: http://www.ncbi.nlm.nih.gov/nlmcatalog/9002563