Related Experiment Video
Updated: Apr 17, 2026
03:57
Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy
Published on: July 14, 2023
2.5K
Angiogenesis in primary hyperparathyroidism
Oliwia Anna Segiet1, Marek Michalski1, Marlena Brzozowa-Zasada1
1Department of Histology and Embryology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland.
Annals of Diagnostic Pathology
|February 5, 2015
Summary
Angiogenesis, the formation of new blood vessels, is crucial in parathyroid tumors. Understanding angiogenesis markers aids in differentiating parathyroid hyperplasia from neoplasia, improving diagnosis and treatment.
Area of Science:
- Endocrinology and Oncology
- Vascular Biology
- Molecular Pathology
Background:
- Angiogenesis is vital for tumor development, including parathyroid lesions.
- Parathyroid tissue can induce angiogenesis via vascular endothelial growth factor (VEGF).
- Primary hyperparathyroidism involves multiple factors contributing to new vessel formation.
Purpose of the Study:
- To explore the role of angiogenesis in parathyroid disease.
- To evaluate angiogenesis markers for distinguishing parathyroid hyperplasia from neoplasia.
- To identify potential genetic alterations in parathyroid tumorigenesis.
Main Methods:
- Review of studies on angiogenesis factors (VEGF, TGF-β, angiopoietins) in parathyroid tissue.
- Analysis of angiogenesis markers (VEGF, VEGFR2, CD105, FGF-2) in differentiating lesions.
- Examination of genetic studies (LOH, CGH) identifying chromosomal alterations.
Main Results:
- Increased angiogenesis observed in parathyroid proliferative lesions compared to adenomas.
- Specific markers like VEGF, VEGFR2, CD105, and FGF-2 show promise but lack definitive cutoff values.
- Key chromosomal regions (9p21, 1p21-22, 1p35-36, 11q13) are frequently altered in parathyroid tumors.
Conclusions:
- Angiogenesis markers and genetic testing can supplement traditional criteria for parathyroid lesion diagnosis.
- Further understanding of angiogenesis in primary hyperparathyroidism can refine diagnosis and treatment strategies.
- Combined immunohistochemistry and genetic analysis offer improved diagnostic precision for challenging cases.
Keywords:
AngiogenesisDiagnostic markersParathyroid adenomaParathyroid carcinomaParathyroid hyperplasiaPrimary hyperparathyroidismMore Related Videos
07:12Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging
Published on: August 17, 2022
5.3K
07:13Two Techniques to Create Hypoparathyroid Mice: Parathyroidectomy Using GFP Glands and Diphtheria-Toxin-Mediated Parathyroid Ablation
Published on: March 14, 2017
15.5K
Related Concept Videos
00:59The Parathyroid Glands
6.2K
The two pairs of parathyroid glands embedded within the posterior surface of the thyroid gland are restricted by a dense capsule around them. These glands comprise two distinct cell populations—parathyroid oxyphil and parathyroid principal cells- pivotal in calcium homeostasis.
Oxyphil cells, whose functions remain elusive, emerge during late puberty, adding a layer of complexity to the parathyroid gland's intricacies. In contrast, principal parathyroid cells undertake a vital role by...
Oxyphil cells, whose functions remain elusive, emerge during late puberty, adding a layer of complexity to the parathyroid gland's intricacies. In contrast, principal parathyroid cells undertake a vital role by...
6.2K
01:27Hyperthyroidism II: Pathophysiology
6
Hyperthyroidism is a hypermetabolic state caused by elevated levels of thyroid hormones, triiodothyronine (T3) and thyroxine (T4). It results from dysregulation at the thyroid, pituitary, or immune system level and affects multiple organ systems.PathophysiologyThe most common cause of hyperthyroidism is Graves’ disease, an autoimmune disorder in which antibodies, specifically thyroid-stimulating antibodies (TSAb), a subtype of TSH receptor antibodies (TRAb), bind to and activate TSH...
6
01:24Regulation of Angiogenesis and Blood Supply
4.0K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
4.0K
01:10Mechanism of Angiogenesis
7.8K
Blood vessel formation starts early during embryonic development, around day 7. In the extraembryonic yolk sac, mesodermal precursor cells called hemangioblast proliferate and differentiate into angioblast. Angioblasts express vascular endothelial growth factor receptor 2 or VEGFR2, which binds VEGF-A, a proangiogenic factor, guiding blood vessel formation. VEGF signaling promotes angioblasts to form a blood island in the developing embryo. Angioblasts further differentiate, giving rise to...
7.8K
01:17Hormones and Bone Tissue
4.3K
The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
4.3K
01:25Hyperthyroidism I: Introduction
4
Hyperthyroidism is a type of thyrotoxicosis characterized by the thyroid gland's overproduction of the thyroid hormones triiodothyronine (T3) and thyroxine (T4). This hormone excess increases the basal metabolic rate and enhances sensitivity to catecholamines.DiagnosisDiagnosis is based on clinical features and biochemical testing. It typically shows suppressed thyroid-stimulating hormone (TSH) levels below 0.4 mIU/L, with elevated free T3 and/or T4. Additional tests, including thyroid...
4