The prostate-specific membrane antigen (PSMA)-targeted radiotracer 18 F-DCFPyL detects tumor neovasculature in metastatic, advanced, radioiodine-refractory, differentiated thyroid cancer

In this study, we show that18F-DCFPyl might detect neovasculature in advanced, metastatic differentiated thyroid cancer (DTC). We first stained the preserved lymph node samples of three patients with DTC who had undergone total thyroidectomy and neck dissection for cervical lymph node metastatic disease to identify PSMA expression, with the PSMA antibody (DAKO Monoclonal). Then, we performed18F-DCFPyl imaging in two other advanced DTC patients with elevated serum thyroglobulin (Tg), indicative of residual disease. We compared the findings with contemporaneous FDG PET/CT scan, conventional Imaging (CT,MRI) and whole-body scan performed with I123/I131. All the three lymph node samples stained positive for PSMA expression in the neovasculature. In the first imaged patient,18F-DCFPyl detected activity within the retropharyngeal CT contrast-enhancing lymph node. Compared to FDG PET/CT, the18F-DCFPyl scan showed a greater SUV (3.1 vs 1.8). In the second imaged patient,18F-DCFPyl showed intense uptake in the L3 vertebra (not seen on the post treatment131I scan or the18F-FDG PET/CT). MRI of the lumbar spine confirmed the presence of sclerotic-lytic lesion at the location, consistent with metastatic disease. Our exploratory study is proof of principle, that the prostate cancer imaging agent18F-DCFPyl may prove useful for the localization of metastases, in patients with metastatic RAI-refractory DTC by detecting neoangiogenesis within the tumor.
Source: Medical Oncology - Category: Cancer & Oncology Source Type: research

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Abstract In various cancers, high-grade tumor and poor survival rate in patients with upregulated lncRNAs UCA1 have been confirmed. Urothelial carcinoma associated 1 (UCA1) is an oncogenic non-coding RNA with a length of more than 200 nucleotides. The UCA1 regulate critical biological processes that are involved in cancer progression, including cancer cell growth, invasion, migration, metastasis, and angiogenesis. So It should not surprise that UCA1 overexpresses in variety of cancers type, including pancreatic cancer, ovarian cancer, gastric cancer, colorectal cancer, breast cancer, prostate cancer, endometrial c...
Source: Current Molecular Medicine - Category: Molecular Biology Authors: Tags: Curr Mol Med Source Type: research
CONCLUSION: We found that 1-in-11 cancer survivors developed a SPC. Given the increasing number of cancer survivors and the importance of SPC as a cause of cancer death, there is a need for increased screening for and prevention of SPC. PMID: 32356175 [PubMed - indexed for MEDLINE]
Source: Clinical Prostate Cancer - Category: Cancer & Oncology Authors: Tags: J Cancer Res Clin Oncol Source Type: research
DiscussionIn this pictorial essay and review, the meaning of high PSMA expression in neovasculature and uncommon PCa metastatic spread were addressed. Furthermore, recent information about the possible explanation of (1) PCa metastases without PSMA expression due to dedifferentiation and specific PCa subtypes, and (2) some discordant findings on PSMA expression evaluated by PET/CT and immunohistochemistry related to the anti-PSMA antibody used in each technique is presented.
Source: Clinical and Translational Imaging - Category: Radiology Source Type: research
Authors: Kind S, Merenkow C, Büscheck F, Möller K, Dum D, Chirico V, Luebke AM, Höflmayer D, Hinsch A, Jacobsen F, Göbel C, Weidemann S, Fraune C, Möller-Koop C, Hube-Magg C, Clauditz TS, Simon R, Sauter G, Wilczak W, Bawahab AA, Izbicki JR, Perez D, Marx A Abstract Syndecan-1 (CD138) is a transmembrane proteoglycan known to be expressed in various normal and malignant tissues. It is of interest because of a possible prognostic role of differential expression in tumors and its role as a target for indatuximab, a monoclonal antibody coupled with a cytotoxic agent. To comprehensively analyze ...
Source: Disease Markers - Category: Laboratory Medicine Tags: Dis Markers Source Type: research
ConclusionsSubstantial differences in cancer incidences were founded depending on occupation reflecting socioeconomic position, in the Korean working population. Cancer prevention policy should focus on addressing these socioeconomic inequalities.
Source: Safety and Health at Work - Category: Occupational Health Source Type: research
Conclusions: Patients with IPF had a higher risk for various types of cancer incidence compared to matched control cohort. Greater attention should be paid to cancer development and screening in patients with IPF.
Source: European Respiratory Journal - Category: Respiratory Medicine Authors: Tags: Idiopathic interstitial pneumonias Source Type: research
Authors: Brenner DR, Ruan Y, Shaw E, O'Sullivan D, Poirier AE, Heer E, Villeneuve PJ, Walter SD, Friedenreich CM, Smith L, De P Abstract BACKGROUND: Although cancer incidence over time is well documented in Canada, trends by birth cohort and age group are less well known. We analyzed age- and sex-standardized incidence trends in Canada for 16 major cancer sites and all cancers combined. METHODS: We obtained nationally representative population-based cancer incidence data in Canada between 1971 and 2015 from the National Cancer Incidence Reporting System (1969-1992) and the Canadian Cancer Registry (1992-2015). ...
Source: Canadian Medical Association Journal - Category: General Medicine Tags: CMAJ Source Type: research
Authors: Demers AA, Brenner DR, Smith L, Shaw A Abstract Examining incidence trends of all cancers combined in order to understand cancer trends can be misleading, as patterns can vary across individual cancer types. This paper highlights findings on trends over time from Canadian Cancer Statistics 2019, as measured by the annual percent change (APC) of age-standardized incidence rates. Among the results were a recent increase in thyroid cancer in males (APC: 6.4%, 1997-2015), as well as decreases in prostate cancer (APC: -9.1%, 2011-2015) and cervical cancer (APC: -3.3%, 2010-2015). PMID: 31729314 [PubMed - in process]
Source: Health Promotion and Chronic Disease Prevention in Canada - Category: International Medicine & Public Health Tags: Health Promot Chronic Dis Prev Can Source Type: research
Abstract AP-1 is a dimeric complex that is composed of JUN, FOS, ATF and MAF protein families. FOS-related antigen 1 (FRA1) which encoded by FOSL1 gene, belongs to the FOS protein family, and mainly forms an AP-1 complex with the protein of the JUN family to exert an effect. Regulation of FRA1 occurs at levels of transcription and post-translational modification, and phosphorylation is the major post-translational modification. FRA1 is mainly regulated by the mitogen-activated protein kinases signaling pathway and is degraded by ubiquitin-independent proteasomes. FRA1 can affect biological functions, such as tumor...
Source: Molecular Biology Reports - Category: Molecular Biology Authors: Tags: Mol Biol Rep Source Type: research
Purpose of review Patients with systemic lupus erythematosus (SLE) have altered incidences of certain malignancies as compared with the general population. This review summarizes the recent literature on risk of malignancy in SLE and proposed mechanisms for these altered susceptibilities. Recent findings Recent studies have confirmed previous data showing an increased risk of hematological, lung, thyroid, liver, cervical and vulvovaginal cancers, while demonstrating a decreased risk of breast and prostate cancer. Lymphomagenesis in SLE has been linked to increased activity of multiple inflammatory cytokines as well as...
Source: Current Opinion in Rheumatology - Category: Rheumatology Tags: SYSTEMIC LUPUS ERYTHEMATOSUS AND SJÖGREN SYNDROME: Edited by Mariana Kaplan Source Type: research
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