Malignant histiocytosis sarcoma virus (MHSV) arose as a recombinant of c-Harvey-ras murine sarcoma virus (Ha-MuSV) and Friend mink cell focus-forming virus (F-MCFV). It is a defective acute transforming retrovirus that, along with Friend murine leukemia helper virus (F-MuLV), induces malignant histiocytosis (MH) in susceptible adult mice. We have assessed the in vivo susceptibility to MHSV in inbred homozygous, F1 hybrid, congenic, and recombinant inbred (RI) mice. We have shown that: (1) in vivo resistance to MHSV is multigenic, regulated by MHC and non-MHC genes in a different fashion than with F-MCFV, F-MuLV, or Ha-MuSV; (2) using BXD RI mice, the resistance phenotype is linked with 95.8% probability to two linked loci, Pmv-9 and Iapls3-14, on chromosome 13 (homologous to the area of human chromosome 5 for which a chromosomal break point at position 5q35 is associated with human MH); and (3) CD4+ T cells are critical for MHSV resistance.
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http://dx.doi.org/10.1002/jlb.64.4.441 | DOI Listing |
J Am Anim Hosp Assoc
January 2025
From Neuro Vets Animal Neurology Clinic, Kyoto, Kyoto, Japan (K.H., Y.N., M.N.).
A 5 yr old chihuahua presented to our clinic with a complaint of decreased activity and focal seizures. Based on the findings of MRI and computed tomography, a primary brain tumor originating from the right frontal lobe region was suspected. Surgical resection was performed, and a diagnosis of histiocytic sarcoma was made via histopathological examination and immunohistochemical staining.
View Article and Find Full Text PDFFront Oncol
December 2024
Head and Neck Oncology Ward, West China Hospital of Sichuan University, Chengdu, China.
Background: Histiocytic sarcoma originates in various tissues, including the skin, lymph nodes, gastrointestinal tract, lungs, bone marrow, and central nervous system. Primary central nervous system histiocytic sarcoma (PCNSHS) is exceptionally rare, known for its aggressive behavior and poor prognosis. This report describes a case of PCNSHS in the cerebellum treated with surgery and radiotherapy.
View Article and Find Full Text PDFCancer Immunol Immunother
January 2025
Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Histiocytic sarcoma (HS) is a rare yet lethal malignancy with no established standard of care therapies. A lack of pre-clinical models limits our understanding of HS pathogenesis and identification of therapeutic targets. Canine HS shares multiple clinical and genetic similarities with human HS, supporting its use as a unique translational model.
View Article and Find Full Text PDFSkeletal Radiol
December 2024
Department of Radiology, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA.
The case report discusses xanthogranulomatous osteomyelitis, a rare inflammatory bone condition that can resemble malignancy on imaging studies. The report details a case of a 42-year-old woman with left leg pain, swelling, and redness lasting 4 months. Imaging revealed a lytic lesion in the left tibia with endosteal erosion, and MRI showed extraosseous soft tissue extension.
View Article and Find Full Text PDFMedicine (Baltimore)
December 2024
Department of Gastroenterology, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China.
Isolated gastric Langerhans cell histiocytosis (LCH) occurs extremely rarely in adults. We characterized the clinicopathological and molecular genetics of this rare entity. We retrospectively analyzed the clinicopathologic and prognostic features of 3 patients with isolated gastric LCH during the past 10 years, with a review of an additional 20 patients from the literature.
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