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Case Report: Giant Thyroid Angiolipoma-Challenging Clinical Diagnosis and Novel Genetic Alterations

Wilkins, Reid; Zan, Elcin; Leonardi, Olga; Patel, Kepal N; Jacobson, Adam S; Jour, George; Liu, Cheng Z; Zhou, Fang
BACKGROUND:A 64-year-old man presented with a 7.8 cm lipomatous thyroid mass discovered on magnetic resonance imaging. METHODS:After two non-diagnostic fine needle aspirations (FNAs) were performed, computed tomography (CT) revealed features concerning for malignancy including central necrosis and infiltrative borders. A third FNA was still non-diagnostic. Total thyroidectomy was performed. RESULTS:Upon pathologic examination, the final diagnosis was primary thyroid angiolipoma. The lesion contained central fat necrosis with ischemic features, attributable to the FNAs. CONCLUSION/CONCLUSIONS:Ours is the third published case report of this rare entity. To date, no lipomatous thyroid tumor has undergone extensive genomic testing. Next-generation sequencing of our case revealed multiple genetic alterations, supporting the concept of angiolipomas being true neoplasms. Whereas the two previously reported cases in the literature were radiographically much smaller and appeared indolent, the large tumor in our case exhibited radiographic features concerning for liposarcoma, which belied the benign final pathologic diagnosis. Our case demonstrates that conservative surgical management (partial thyroidectomy) may be considered for lipomatous thyroid tumors, with further interventions to be determined only after final pathologic diagnosis.
PMID: 36255668
ISSN: 1936-0568
CID: 5360392

Hormonally active nontransformed human ovarian cell culture from oophorectomy specimens: methods of development and initial characterization

Seto-Young, Donna; Leonardi, Olga; Park, Alice; Holcomb, Kevin; Salehi, Marzieh; Chang, Peter; Yih, Melissa; Rosenwaks, Zev; Poretsky, Leonid
We repeatedly established a nontransformed steroidogenically active human ovarian cell culture derived from oophorectomy specimens. The cells maintained steroidogenic activity for 3-5 passages (6-8 weeks) and responded to stimulation by insulin and gonadotropin. With pregnenolone as substrate, LH stimulated progesterone production up to 124% and FSH up to 121%. Insulin alone stimulated progesterone production up to 135%, in the presence of LH up to 191%, and in the presence of FSH up to 170%. With dehydroisoandrosterone (DHA) as substrate, insulin alone stimulated testosterone production up to 117%, and in the presence of LH (but not FSH) up to 125%. With androstenedione as substrate, insulin alone stimulated estradiol production up to 133%, FSH alone up to 188%, and LH with insulin up to 217%. With progesterone as substrate and in the presence of LH (but not FSH), 17-alpha-hydroxylase activity was stimulated up to 131%. With DHA as substrate and in the presence of LH, 3-beta-hydroxysteroid dehydrogenase (3-beta-HSD) activity was stimulated up to 139%. With androstenedione as substrate, insulin alone stimulated aromatase activity up to 202%, LH up to 208%, and FSH up to 251%. Under the same conditions, in the presence of LH and insulin, aromatase activity was stimulated up to 342%, and in the presence of FSH and insulin, up to 318%. With testosterone as substrate, insulin alone stimulated aromatase activity up to 122%. With testosterone as substrate, in the presence of LH and insulin, aromatase activity was stimulated up to 136%, and in the presence of FSH and insulin, up to 156%. Immunocytochemistry studies directly confirmed presence of aromatase and 3-beta-HSD in these cultured cells. We conclude that a steroidogenically active nontransformed long-term human ovarian cell culture can be repeatedly established from oophorectomy specimens, providing uninterrupted supply of cultured human ovarian cells for a variety of studies of ovarian physiology
PMID: 16260896
ISSN: 0301-0163
CID: 110201

Beta-cell apoptosis in the pathogenesis of human type 2 diabetes mellitus

Leonardi, Olga; Mints, Gregory; Hussain, Mehboob A
PMID: 12887285
ISSN: 0804-4643
CID: 39126

Brain-derived neurotrophic factor regulates maturation of the DARPP-32 phenotype in striatal medium spiny neurons: studies in vivo and in vitro

Ivkovic S; Polonskaia O; Farinas I; Ehrlich ME
The medium spiny neuron is the predominant striatal neuronal subtype. The striatum, a participant in motor and cognitive functions, is a site of pathophysiology in prevalent neuropsychiatric diseases and is the target of many currently utilized pharmacologic agents. DARPP-32, a dopamine and cyclic AMP-regulated phosphoprotein, is a widely-used marker of mature striatal medium-sized neurons, but the molecules regulating DARPP-32 transcription have not been identified. We show that a null mutation in the mouse brain-derived neurotrophic factor gene leads to decreased DARPP-32 immunoreactivity in striatal medium spiny neurons at birth and postnatal day 10. Striatal DARPP-32 messenger RNA and protein are decreased relative to wild-type littermate controls. In densely plated (1 x 10(6) cells/cm2) primary cultures derived from the ganglionic eminences, addition of brain-derived neurotrophic factor (100 ng/ml) to defined media results in a greater than 3-fold increase in the number of DARPP-32-immunopositive cells after 12 h and greater than 4-fold (P<0.005) after 24 h. The increase in DARPP-32-immunopositivity is abolished by the addition of 2 microg/ml actinomycin D without a significant effect on cell viability. These data suggest that brain-derived neurotrophic factor directly or indirectly regulates DARPP-32 transcription in medium spiny neurons. This is the first demonstration of transcriptional regulation of DARPP-32, and the first evidence of a forebrain abnormality in a newborn neurotrophin 'knockout' mouse
PMID: 9200733
ISSN: 0306-4522
CID: 56955

Doses of peptide growth factors which promote terminal differentiation of E13 to PND1 striatal progenitor cells do not promote long-term survival [Meeting Abstract]

Ivkovic, S.; Polonskaia, O.; Ehrlich, M. E.
ISSN: 0190-5295
CID: 92594

Brain derived neurotrophic factor (BDNF) regulates striatal DARPP-32 and ARPP-21 in vivo and in vitro [Meeting Abstract]

Ivkovic, S.; Polonskaia, O.; Ehrlich, M. E.
ISSN: 0190-5295
CID: 92595