Histopathological spectrum of common aldosterone-driver gene mutations in aldosterone-producing adenomas
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
View abstract on PubMed
Summary
This summary is machine-generated.This study refines genotype-phenotype correlations in aldosterone-producing adenomas (APAs) using CYP11B2-guided sequencing. It reveals distinct histopathological features for different gene mutations, improving diagnostic accuracy.
Area Of Science
- Endocrinology
- Oncology
- Genetics
Background
- Aldosterone-producing adenomas (APAs) exhibit genotype-phenotype correlations.
- Previous studies may have misinterpreted these correlations due to incomplete genetic sequencing.
- CYP11B2-guided sequencing offers a more precise approach.
Purpose Of The Study
- To identify genotype-phenotype correlations in mutant APAs using CYP11B2-guided sequencing.
- To correlate specific aldosterone-driver gene mutations with histopathological findings.
- To refine understanding of APA pathogenesis.
Main Methods
- Conducted CYP11B2-guided sequencing on 33 APAs with known aldosterone-driver mutations (KCNJ5, ATP1A1, CACNA1D, CTNNB1).
- Performed immunohistochemical staining for H&E, CYP17A1, CYP11B2, KCNJ5, Ki67, β-catenin, and LHCGR.
- Analyzed histopathological features in relation to identified gene mutations.
Main Results
- CTNNB1 double mutant APAs showed reduced CYP17A1 expression and increased spironolactone bodies compared to single mutants.
- CTNNB1 mutant APAs exhibited constitutive Wnt/β-catenin pathway activation.
- KCNJ5 mutant APAs showed atypical cells, CACNA1D mutant APAs had frequent spironolactone bodies, and ATP1A1 mutant APAs had higher Ki67 scores.
Conclusions
- CYP11B2-guided sequencing of all known aldosterone-driver genes refines genotype-phenotype correlations in APAs.
- Specific mutations in KCNJ5, ATP1A1, CACNA1D, and CTNNB1 are associated with distinct histopathological profiles.
- This approach enhances diagnostic precision for aldosterone-producing adenomas.
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
Related Concept Videos
Adrenal gland disorders manifest when the production of adrenal hormones deviates from the norm, resulting in either excessive or insufficient concentrations.
Adrenal insufficiency, characterized by insufficient cortisol and aldosterone production, leads to conditions like Addison's disease. This disorder, affecting the adrenal cortex, exhibits symptoms such as skin bronzing, dehydration, low blood pressure, fatigue, and weight loss. Congenital adrenal hyperplasia, a genetic ailment causing...
The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
Ras is a...
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
The sympathetic pathways of the collateral ganglia and adrenal medulla serve unique but interconnected roles in the sympathetic response.
Collateral Ganglia
Sympathetic preganglionic axons reach the collateral ganglia along the route of splanchnic nerves. These nerves bypass the sympathetic trunk and communicate with sympathetic postganglionic neurons housed in the prevertebral ganglia. These ganglia supply the organs of the abdominopelvic cavity.
The greater splanchnic nerve, formed by the...
Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...