TY  - JOUR
A1  - Altieri, Barbara
A1  - Di Dato, Carla
A1  - Modica, Roberta
A1  - Bottiglieri, Filomena
A1  - Di Sarno, Antonella
A1  - Pittaway, James F.H.
A1  - Martini, Chiara
A1  - Faggiano, Antongiulio
A1  - Colao, Annamaria
T1  - Bone metabolism and vitamin D implication in gastroenteropancreatic neuroendocrine tumors
JF  - Nutrients
N2  - Patients affected by gastroenteropancreatic–neuroendocrine tumors (GEP–NETs) have an increased risk of developing osteopenia and osteoporosis, as several factors impact on bone metabolism in these patients. In fact, besides the direct effect of bone metastasis, bone health can be affected by hormone hypersecretion (including serotonin, cortisol, and parathyroid hormone-related protein), specific microRNAs, nutritional status (which in turn could be affected by medical and surgical treatments), and vitamin D deficiency. In patients with multiple endocrine neoplasia type 1 (MEN1), a hereditary syndrome associated with NET occurrence, bone damage may carry other consequences. Osteoporosis may negatively impact on the quality of life of these patients and can increment the cost of medical care since these patients usually live with their disease for a long time. However, recommendations suggesting screening to assess bone health in GEP–NET patients are missing. The aim of this review is to critically analyze evidence on the mechanisms that could have a potential impact on bone health in patients affected by GEP–NET, focusing on vitamin D and its role in GEP–NET, as well as on factors associated with MEN1 that could have an impact on bone homeostasis.
KW  - bone
KW  - vitamin D
KW  - neuroendocrine tumor
KW  - osteoporosis
KW  - mineral bone density
KW  - cortisol
KW  - serotonin
KW  - miRNA
KW  - MEN1
KW  - therapy
Y1  - 2020
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-203823
SN  - 2072-6643
VL  - 12
IS  - 4
ER  - 
TY  - JOUR
A1  - Altieri, Barbara
A1  - Di Dato, Carla
A1  - Martini, Chiara
A1  - Sciammarella, Concetta
A1  - Di Sarno, Antonella
A1  - Colao, Annamaria
A1  - Faggiano, Antongiulio
T1  - Bone Metastases in Neuroendocrine Neoplasms: From Pathogenesis to Clinical Management
JF  - Cancers
N2  - Bone represents a common site of metastases for several solid tumors. However, the ability of neuroendocrine neoplasms (NENs) to localize to bone has always been considered a rare and late event. Thanks to the improvement of therapeutic options, which results in longer survival, and of imaging techniques, particularly after the introduction of positron emission tomography (PET) with gallium peptides, the diagnosis of bone metastases (BMs) in NENs is increasing. The onset of BMs can be associated with severe skeletal complications that impair the patient's quality of life. Moreover, BMs negatively affect the prognosis of NEN patients, bringing out the lack of curative treatment options for advanced NENs. The current knowledge on BMs in gastro-entero-pancreatic (GEP) and bronchopulmonary (BP) NENs is still scant and is derived from a few retrospective studies and case reports. This review aims to perform a critical analysis of the evidence regarding the role of BMs in GEP- and BP-NENs, focusing on the molecular mechanisms underlining the development of BMs, as well as clinical presentation, diagnosis, and treatment of BMs, in an attempt to provide suggestions that can be used in clinical practice.
KW  - neuroendocrine neoplasms
KW  - bone metastases
KW  - bone microenvironment
KW  - skeletal-related events
KW  - epithelial-to-mesenchymal transition
KW  - microRNA
KW  - prognosis
KW  - treatment
KW  - denosumab
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-221079
VL  - 11
ER  -