Results 31 to 40 of about 64,507 (169)
Modelling the Establishment of PAR Protein Polarity in the One-Cell C. elegans Embryo [PDF]
Biophys. J. 2008 95: 4512-4522, 2008 At the one-cell stage, the C. elegans embryo becomes polarized along the anterior-posterior axis. The PAR proteins form complementary anterior and posterior domains in a dynamic process driven by cytoskeletal rearrangement. Initially, the PAR proteins are uniformly distributed throughout the embryo.
arxiv +1 more source
Preoperative Volume Determination for Pituitary Adenoma [PDF]
, 2016 The most common sellar lesion is the pituitary adenoma, and sellar tumors are approximately 10-15% of all intracranial neoplasms. Manual slice-by-slice segmentation takes quite some time that can be reduced by using the appropriate algorithms. In this contribution, we present a segmentation method for pituitary adenoma.
arxiv +1 more source
Brain tumor detection using artificial convolutional neural networks [PDF]
arXiv, 2022 In this paper, a convolutional neural network (CNN) was used to classify NMR images of human brains with 4 different types of tumors: meningioma, glioma and pituitary gland tumors. During the training phase of this project, an accuracy of 100% was obtained, meanwhile, in the evaluation phase the precision was 96%.
arxiv
Radiology Case Reports, 2018 The ectopic posterior pituitary is a rare condition which is characterized by the ectopic location of posterior lobe of pituitary, pituitary stalk abnormalities, and associated clinical manifestations of anterior lobe related growth hormone dysfunction ...
Ashim Kumar Lahiri +3 more
doaj
Pituitary stalk interruption syndrome: A case report
Radiology Case Reports, 2023 Pituitary stalk interruption syndrome (PSIS) is a rare congenital abnormality. It comprises the triad of thin or interrupted pituitary stalk, aplasia or hypoplasia of anterior pituitary gland, and absent or ectopic posterior pituitary gland.
Kapil Dawadi, MD +2 more
doaj
Functional anterior pituitary generated in self-organizing culture of human embryonic stem cells
Nature Communications, 2016 It is difficult to generate functional human anterior pituitary tissues in vitro. Here, Ozone et al. generate human anterior pituitary from embryonic stem cells by recapitulating in vivodevelopment, and demonstrate this tissue secretes hormones and ...
Chikafumi Ozone +8 more
doaj +1 more source
Mathematical Modeling of Perifusion Cell Culture Experiments on GnRH Signaling [PDF]
arXiv, 2015 The effects of pulsatile GnRH stimulation on anterior pituitary cells are studied using perifusion cell cultures, where constantly moving medium over the immo- bilized cells allows intermittent GnRH delivery. The LH content of the outgoing medium serves as a readout of the GnRH signaling pathway activation in the cells.
arxiv
Deprenyl, an old drug with new anticancer potential: Mini review [PDF]
arXiv, 2021 The anticancer potential of monoamine oxidase (MAO) was observed in pre-clinical assays conducted with cell cultures and animals. L-Deprenyl (DEP) causes apoptosis in melanoma, leukemia and mammary cells. High-dose DEP has shown toxicity in mammary and pituitary cancers, as well as in monoblastic leukemia, in rats.
arxiv
Pituitary Adenoma Segmentation [PDF]
arXiv, 2011 Sellar tumors are approximately 10-15% among all intracranial neoplasms. The most common sellar lesion is the pituitary adenoma. Manual segmentation is a time-consuming process that can be shortened by using adequate algorithms. In this contribution, we present a segmentation method for pituitary adenoma.
arxiv
Symptomatic Pituitary Metastases: Two Case Reports with Contrasting Clinical Presentations
AACE Clinical Case Reports, 2019 : Objective: To report 2 interesting cases of pituitary metastasis (PM) with differing presentations, and briefly review the literature regarding the incidence, presentation, and natural history of PMs.
Allison J. Estrada, MD +2 more
doaj