Endocrine Abstracts

Purpose: To identify predictive biomarkers of recurrence in NFPTs, we used heat shock protein profiling approach to correlate protein expression profiles with tumor recurrence. Heat shock proteins (HSPs) are synthesized by cells in response to various stress conditions, including carcinogenesis. The expression of HSPs in tumors has been implicated in the regulation of apoptosis. In the current study, we attempted to clarify the significance of HSPs in NFPTs and their correlati...

Introduction: Aryl hydrocarbon receptor interacting protein (AIP) is a multifunctional co-chaperone protein: it behaves as a tumour suppressor in the pituitary, but may have other roles including oncogenic function in other tissues. Protein phosphorylation is an important posttranslational modification that regulates protein activity, which is crucial for understanding protein function. To understand the molecular pathways altered in AIP deficient cells, we have performed glob...

Objective: The primary objective was to characterise the paracrine milieu in three subjects with apparently idiopathic gigantomastia and to study the relative expression of implicated factors in these pathological specimens as compared to tissue samples from normal breast, gynecomastia and breast cancer.Background: Gigantomastia refers to pathological breast enlargement usually occurring in the peripubertal or peripartum period. Idiopathic gigantomastia,...

Objective: To study O6-methylguanine-DNA methyltransferase (MGMT) immunoexpression to access the efficacy of Temozolamide (TMZ) as a part of multimodality treatment.Background: Aggressive or residual pituitary tumours are associated with substantial morbidity. Treatment options are often limited, and chemotherapy are associated with dismal results. Recent reports have documented the efficacy of TMZ therapy in aggressive pituitary tumors resistant to mult...

Introduction: Aryl hydrocarbon receptor interacting protein (AIP) is a multifunctional co-chaperone protein with wide-ranging effects. It acts as a tumour suppressor in the pituitary, but may have other roles including oncogenic function in other tissues. To explore the molecular mechanisms, we have performed transcriptomic and phosphoproteomic analysis of Aip-knockout mouse embryonic fibroblasts (Aip-KO MEFs) cells and integrated these data sets.<p class=...

Introduction: Acromegaly is a neuroendocrine disorder caused by excessive secretion of growth hormone (GH). Current treatment includes surgery, radiotherapy and drugs like somatostatin or dopamine receptor agonist. In spite of combination of therapies cure rate is dismal. There is a quest for new therapeutic targets with optimal efficacy, least side effect without any cost constraints. Recently, a few reports have shown that tyrosine kinase inhibitor (Imatinib) causes growth f...

Introduction: Hypopituitarism is the most frequent side effect of radiation or gamma knife radiosurgery (GKRS) for sellar diseases. There is a paucity of literature on the impact of GKRS on the hormonal profile of non-sellar diseases, even though the impact of radiation on pituitary hormones has been widely explored in sellar as well as non-sellar pathologies. In patients receiving treatment for non-sellar diseases, we assessed the effect of GKRS on hormonal p...

Background: No predictive biomarkers for NFPT recurrence have been identified, apart from Ki67. We employed high-throughput mass spectrometry-based analyses to examine the phosphorylation pattern of different subsets of NFPTs. Methods: Based on histopathological, radiological and surgical features, NFPTs were sub-grouped into three groups: non-invasive (n = 15), invasive (n = 10) and recurrent (n = 5) subtypes. Invasiveness was...

Background: No predictive biomarkers have been identified for clinically nonfunctioning pituitary tumour (NFPT) recurrence, with Ki67 being controversial. We employed quantitative mass spectrometry-based analyses to examine the differential expression of proteins in NFPTs.Methods: NFPTs were sub-grouped: non-invasive/non-recurrent group (NI/NR-G, n=5), invasive group (I-G, n=10) and recurrent group (R-G, n=5). Invasiveness was ...

Introduction: Pachydermoperiostosis (primary hypertrophic osteoarthropathy, PHOA) is a rare genetic condition characterised by digital clubbing, pachydermia, hyperhidrosis, cutis verticis gyrata and periostosis. The SLCO2A1 transporter and HPGD enzyme genes play an important role in prostaglandin metabolism, hence loss of function mutations in them causes PHOA. To date, according to the VarSome database 101 and 41 variants have been identified in the SLCO...