The AFIP's Department of Veterinary Pathology & the American Registry of Pathology Dedicate This Pathology of Laboratory A
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The AFIP’s Department of Veterinary Pathology & the American Registry of Pathology dedicate this Pathology of Laboratory Animals syllabus to COL (Ret.) William Inskeep II. COL (Ret.) William Inskeep II 10 October 1949 – 2 July 2005 COL Inskeep entered active military service in 1971, with a Reserve Officer Training Corps commission in the US Air Force. He served five years as a Minuteman Missile Launch Officer at Francis E. Warren Air Force Base, Cheyenne, Wyoming. He was a graduate of Colorado State University and entered the US Army Veterinary Corps in June 1980. COL Inskeep was a Diplomate of the American College of Veterinary Pathologists and held the Surgeon General’s “A” Proficiency Designator in the field of Veterinary Pathology. He was also a member of the Order of Military Medical Merit. COL Inskeep had many diversified and challenging assignments as a Veterinary Corps Officer, his most recent being the Chair, Department of Veterinary Pathology, AFIP, 1997-2003. He also served as Veterinary Pathology Consultant to the Army Surgeon General, 2000-2003, as AFIP Deputy Director Army, 1998-2001, and as DoD Liaison Officer to the US Department of Agriculture, 1996-2000. COL Inskeep was a graduate of the Army War College. His military awards include Defense Superior Service Medal, Legion of Merit, Meritorious Service Medal with oak leaf cluster, Joint Service Commendation Medal, Army and Air Force Commendation Medals, and Army Staff Badge. COL Inskeep had many accomplishments over his 28 year military career. However, we will remember him most as a dedicated, enthusiastic mentor and teacher of many residents at the AFIP. We pay tribute to our long-time colleague and friend, and will greatly miss him. 49th Pathology of Laboratory Animals 2 – 5 August 2005 Faculty Disclosure Information At the time of printing this syllabus the following faculty had nothing to disclose: Nancy E. Everds, DVM, DACVP James B. Nold, DVM, PhD, DACVP Martha A. Hanes, DVM, DACVP, DACLAM Jo Lynne Raymond, LTC, VC, USA, DACVP Kenneth S. Latimer, DVM, PhD, DACVP Bruce H. Williams, DVM, DACVP The following faculty member has not yet returned faculty disclosure statements: Steven W. Barthold, DVM, PhD, DACVP Gary B. Baskin, DVM, DACVP, DACLAM Robert B. Moeller, Jr., DVM, DACVP Disclosure of Faculty Financial Affiliations As a provider accredited by the Accreditation Council for Continuing Medical Education, the Department of Medical Education of The Armed Forces Institute of Pathology must insure balance, independence, objectivity and scientific rigor in all its individually sponsored or jointly sponsored educational activities. All faculty participating in a sponsored educational activity are expected to disclose to the activity audience any significant financial interest or other relationship (1) with the manufacturer(s) of any commercial product(s) and/or provider(s) of commercial services discussed in an educational presentation and (2) with any commercial supporters of the activity (significant financial interest or other relationship can include such things as grants or research support, employee, consultant, major stock holder, member of speakers bureau, etc.). The intent of this disclosure is not to prevent a speaker with a significant financial or other relationship from making a presentation, but rather to provide listeners with information on which they can make their own judgments. It remains for the audience to determine whether the speaker’s interests or relationships may influence the presentation with regard to exposition or conclusion. FACULTY Steven W. Barthold, DVM, PhD, DACVP Center for Comparative Medicine School of Medicine and Veterinary Medicine University of California, Davis, Davis, California Gary B. Baskin, DVM, DACVP, DACLAM Sierra Biomedical A Charles River Company Mandeville, Louisiana Nancy E. Everds, DVM, DACVP DuPont Haskell Laboratory for Health and Environmental Sciences Newark, Delaware Martha A. Hanes, DVM, DACVP, DACLAM Integrated Laboratory Systems Research Triangle Park North Carolina Kenneth S. Latimer, DVM, PhD, DACVP Department of Veterinary Pathology College of Veterinary Medicine University of Georgia Athens, Georgia Robert B. Moeller, Jr, DVM, DACVP California Animal Health and Food Safety Laboratory Tulare, California James B. Nold, DVM, PhD, DACVP Safety Assessment, GlaxoSmithKline Research Triangle Park North Carolina Jo Lynne Raymond, LTC, VC, USA, DACVP US Army Medical Research Institute of Infectious Diseases Fort Detrick, Maryland Bruce H. Williams, DVM, DACVP Department of Telemedicine Armed Forces Institute of Pathology Washington, DC PROGRAM Tuesday, 2 August 2005 7:30 - 8:15AM Registration 8:15 - 8:30 Welcome and Announcements - Dale G. Dunn, COL, VC, USA Chair, Department of Veterinary Pathology 8:30 - 9:30 Diseases of Mice - Dr. Barthold 9:30 - 9:45 BREAK 9:45 -10:45 Diseases of Mice - Dr. Barthold 10:45-11:00 BREAK 11:00-12:00PM Diseases of Mice - Dr. Barthold 12:00 -1:00 LUNCH BREAK 1:00 - 2:00 Diseases of Rats - Dr. Barthold 2:00 - 2:15 BREAK 2:15 - 3:15 Diseases of Ferrets - Dr. Williams 3:15 - 3:30 BREAK 3:30 - 4:30 Diseases of Ferrets Dr. Williams ________________________________ Wednesday, 3 August 2005 8:00 - 9:00AM Clinical Pathology - Dr. Latimer 9:00 - 9:15 BREAK 9:15 -10:15 Clinical Pathology - Dr. Latimer 10:15-10:30 BREAK 10:30-11:30 Clinical Pathology - Dr. Latimer 11:30-12:30PM LUNCH BREAK 12:30 - 1:30 Clinical Pathology - Dr. Everds 1:30 - 1:45 BREAK 1:45 - 2:45 Clinical Pathology - Dr. Everds 2:45 - 3:00 BREAK 3:00 - 4:00 Clinical Pathology - Dr. Everds 6:00 - 8:00 Reception, National Museum of Health and Medicine, AFIP Thursday, 4 August 2005 8:00 - 9:00AM Diseases of Primates - Dr. Baskin 9:00 - 9:15 BREAK 9:15 -10:15 Diseases of Primates - Dr. Baskin 10:15-10:30 BREAK 10:30-11:30 Diseases of Primates - Dr. Baskin 11:30-12:30PM LUNCH BREAK 12:30 - 1:30 Diseases of Hamsters, Guinea Pigs, and Gerbils - Dr. Hanes 1:30 - 1:45 BREAK 1:45 - 2:45 Diseases of Hamsters, Guinea Pigs, and Gerbils - Dr. Hanes 2:45 - 3:00 BREAK 3:00 - 4:00 Diseases of Rabbits - LTC Raymond ________________________________ Friday, 5 August 2005 8:00 - 9:00AM Diseases and Neoplasms of the Aging Rat - Dr. Nold 9:00 - 9:15 BREAK 9:15 -10:15 Diseases and Neoplasms of the Aging Rat - Dr. Nold 10:15-10:30 BREAK 10:30-11:30 Diseases and Neoplasms of the Aging Rat - Dr. Nold 11:30-12:30PM LUNCH BREAK 12:30 - 1:30 Diseases of Fish - Dr. Moeller 1:30 - 1:45 BREAK 1:45 - 2:45 Diseases of Fish - Dr. Moeller 2:45 - 3:00 Closing Remarks - COL Dunn PATHOLOGY OF LABORATORY MICE Stephen W. Barthold, DVM, PhD Professor and Director Center for Comparative Medicine Schools of Medicine and Veterinary Medicine University of California, Davis One Shields Ave. Davis, CA 95616 [email protected] (530) 752-1245 Director UC Davis Mouse Biology Program http://ccm.ucdavis.edu/mbp/ (530) 754-MOUSE [email protected] THE LABORATORY MOUSE Mus musculus sensu lato (Mus domesticus, castaneus, musculus, et al.) Normal features: Social structure: Deme – dominance heirarchy allows mature males to exist within the population (unusual for rodents) Pheromones Physiology: Heterothermic: not quite homeothermic, not quite poikilothermic. Wide adaptive environmental range, but intolerant to sudden temperature variations. Death @ >80 degrees F if sudden. Digestive system: Incisive foramen Continuously growing incisors, rooted molars Gastric yeast (Torulopsis spp.) Simple intestine Sexual dimorphism of submaxillary salivary gland serous cells Paneth cells in crypts - very prominent granules Ileal filamentous bacteria Absorption vacuoles in infant small intestine Physiologic hyperplasia in lactating, pregnant females Very short rectum - descending colon enveloped in serosa almost to anus, thereby making mouse susceptible to rectal prolapse Variable liver lobation Certain strains (BALB) prone to normal background hepatocellular fatty change. Exacerbated in disease. Hepatocellular polykarya, megalokarya (polyploidy) Hepatocellular intranuclear cytoplasmic invagination Giant pancreatic islets Hyalinosis and crystals in biliary and gall bladder epithelium (B6, 129) Respiratory system: Obligate nasal breathers Prominent vomeronasal organs Single left lung lobe, four right lobes. No intrapulmonary bronchi (no cartilage) Cardiac muscle extends around large pulmonary veins Hyalinosis in respiratory, especially nasal epithelium (B6, 129); crystals in lung Hematopoeitic / lymphoid system: Extramedullary hematopoeisis in liver, spleen (sometimes adrenal) in infant mice through weaning age. Continues in spleen throughout life, particularly in pregnancy. Disease states readily induce EMH in liver of adults. No tonsils Thymus does not completely involute Indistinct Hassel’s corpuscles in thymus Ectopic thymus in thyroid, parathyroid and parathyroid in thymus Accessory spleens “Patches” of lymphoid cells on visceral pleura of lung, peritoneum (B1 cells) Mast cells can be common in spleen of some strains (i.e. A) Peyer’s patches in both small and large intestine Short life span of erythrocytes (42 days compared to approx. 100 in humans), resulting in anisocytosis, polychromasia, Howell-Jolly bodies Peripheral blood granulocytosis in adult males “Doughnut” granulocytes, or ring forms especially in tissues Hemosiderin pigment accumulates in spleen, particularly multiparous females Endocrine system: Accessory adrenals common No discernable zona reticularis X zone: basophilic cells surrounding medulla around 10 days of age, then disappear as mice mature. Swollen,