Results 41 to 50 of about 57,540 (294)

Homeostasis as the Mechanism of Evolution. [PDF]

open access: yes, 2015
Homeostasis is conventionally thought of merely as a synchronic (same time) servo-mechanism that maintains the status quo for organismal physiology. However, when seen from the perspective of developmental physiology, homeostasis is a robust, dynamic ...
Torday, John S
core   +2 more sources

Hypoxia in the Initiation and Progression of Neuroblastoma Tumours [PDF]

open access: yes, 2020
Neuroblastoma is the most frequent extracranial solid tumour in children, causing 10% of all paediatric oncology deaths. It arises in the embryonic neural crest due to an uncontrolled behaviour of sympathetic nervous system progenitors, giving rise to ...
Gómez Muñoz, María Ángeles   +3 more
core   +1 more source

Treadmill exercise does not change gene expression of adrenal catecholamine biosynthetic enzymes in chronically stressed rats

open access: yesAnais da Academia Brasileira de Ciências, 2013
Chronic isolation of adult animals represents a form of psychological stress that produces sympatho-adrenomedullar activation. Exercise training acts as an important modulator of sympatho-adrenomedullary system.
LJUBICA GAVRILOVIC   +5 more
doaj   +1 more source

Adrenal pheochromocytoma incidentally discovered in a patient with parkinsonism [PDF]

open access: yes, 2015
To evaluate the diagnostic route of pheochromocytoma (PHEO) in a patient under dopaminergic treatment. A 70-year-old man with Parkinsonism and under treatment with levodopa and carbidopa came to our observation for evaluation of arterial hypertension and
Claudio Letizia   +7 more
core   +1 more source

Ultrasound in Women's Health: Mechanisms, Applications, and Emerging Opportunities

open access: yesAdvanced Materials, EarlyView.
As healthcare moves toward decentralization, ultrasound technologies are evolving from strictly imaging tools in clinical settings into versatile diagnostic and therapeutic platforms, with growing roles addressing women's health needs. This review highlights how ultrasound's underlying physical mechanisms can be harnessed to reduce disparities in women'
Sarah B. Ornellas   +7 more
wiley   +1 more source

Immunohistochemical analysis of ghrelin expression in various types of adrenal tumors

open access: yesFolia Histochemica et Cytobiologica, 2021
INTRODUCTION: Ghrelin, originally isolated from the endocrine cells of the gastric mucosa, is also expressed in many peripheral tissues, including normal adrenals and adrenocortical tumors.
Hanna Komarowska   +6 more
doaj   +1 more source

A rare case report of hypertrophic cardiomyopathy induced by catecholamine-producing tumor [PDF]

open access: yes, 2018
RATIONALE: Catecholamine-producing tumors are rare, occurring in less than 0.2% of patients with hypertension, but can have relevant cardiovascular morbidity and mortality. PATIENT CONCERNS: A 37-year-old woman presented with a history of dyspnea, chest
Bisogni, Valeria   +12 more
core   +1 more source

Integrated Transcriptomics Reveals Evolutionary Trajectories and Cell Density‐Dependent Mechanisms in Aldosterone‐Producing Adenomas

open access: yesAdvanced Science, EarlyView.
Aldosterone‐producing adenomas (APAs) develop via two distinct paths: directly from adrenal zona glomerulosa (zG) cells, or stepwise from zG cells through aldosterone‐producing micronodules (APMs) before progressing to APAs. Advanced single‐cell and spatial analyses identified distinct cell states linked to oxidative stress and cell–cell interactions ...
Zhuolun Sun   +7 more
wiley   +1 more source

Adenylyl Cyclase 8 in Dorsal CA1 Neurons Prevents Depressive‐Like Behaviors by Maintaining Neuronal Excitability and Glutamatergic Neurotransmission Through TIP39‐PTH2R Signaling

open access: yesAdvanced Science, EarlyView.
Depression, a prevalent neuropsychiatric disorder with unclear pathogenesis, involves dysfunctional adenylyl cyclase 8 (Adcy8) as a key risk factor. Chronic stress selectively reduces Adcy8 expression in the dorsal CA1 (dCA1) neurons. Depletion of Adcy8 in dCA1 excitatory neurons induces depressive‐like behaviors by impairing neuronal excitability and ...
Zi‐Jie Liu   +14 more
wiley   +1 more source

Heterotopic adrenal gland in undescendent testis – Case report

open access: yesUrology Case Reports, 2019
Heterotopic adrenal cortex is usually found in the kidney, retroperitoneum and spermatic cord. The adrenal gland has a dual embryonic origin: the cortex arises from the mesoderm and the medulla from ectoderm of the neural crest. Adrenal cortex and gonads
D. Anakievski, D. Malinova
doaj   +1 more source

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