The purpose of this study was to investigate the effects of the freeze-thaw procedure on the ultrastructural features of human thyroid cells. Four different stages of thyroid cell preparation were compared: (1) fresh surgical tissue, serving as control, (2) cell suspension before freezing, (3) cell suspension after thawing, and (4) monolayer cell culture, obtained from cells after thawing. Electron microscopic examination of cells from each stage showed that the freeze-thaw procedure used caused only minor intracellular alterations restricted to mitochondria. Some of these organelles showed low-amplitude swelling or occasionally appeared condensed. These ultrastructural changes were not paralleled by a decrease in the vitality or sensitivity of the cryopreserved cells to stimulating agents.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/0011-2240(87)90034-4 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Tinagl1 restores tamoxifen sensitivity and blocks fibronectin-induced EMT by simultaneously blocking the EGFR and β1-integrin/FAK signaling pathways in tamoxifen-resistant breast cancer cells.
IUBMB Life
January 2025
Department of General Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.
Tamoxifen (TAM) is employed to treat premenopausal ER-positive breast cancer patients, but TAM resistance is the main reason affecting its efficacy. Thus, addressing TAM resistance is crucial for improving therapeutic outcomes. This study explored the potential role of Tinagl1, a secreted extracellular matrix protein, whose expression is compromised in TAM-resistant MCF-7 breast cancer cells (MCF-7R).
View Article and Find Full Text PDFInvestigation of the Anticarcinogenic Effects of Hypericum perforatum Extract on Human Thyroid Cancer.
Anticancer Agents Med Chem
January 2025
Department of Biochemistry, Faculty of Science, Selcuk University, Konya, Turkiye.
Introduction/objective: Plants and their bioactive compounds play a crucial role in the pharmaceutical industry for treating cancer. To date, the cytotoxic and antiproliferative effects of Hypericum perforatum methanol extract on human thyroid cancer cell lines have not been thoroughly explored. The present study aimed to assess the potential anti-cancer effects of HPME on human thyroid cancer and investigate its potential therapeutic benefits.
View Article and Find Full Text PDFA 46-Year-Old Man with an Incidental Finding of a Papillary Thyroid Carcinoma in a Thyroglossal Duct Cyst.
Am J Case Rep
December 2024
Department of Otolaryngology, Military Institute of Aviation Medicine, Warsaw, Poland.
BACKGROUND The thyroglossal duct cyst, which develops from the midline migratory tract between the foramen cecum and the anatomic location of the thyroid, is the most prevalent congenital abnormality of the neck, accounting for about 70% of all cervical neck masses in children and 7% in adults. Only up to 1% of these abnormalities contain malignant thyroid tissue, with 90% of those cases being papillary thyroid carcinoma. Thyroglossal duct cyst is rarely linked to carcinoma.
View Article and Find Full Text PDFShikonin inhibits the growth of anaplastic thyroid carcinoma cells by promoting ferroptosis and inhibiting glycolysis.
Heliyon
July 2024
Chinese Material Medical College, Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 301617, China.
Anaplastic thyroid carcinoma is one of the highly fatal cancers and poses a serious threat to human health. Ferroptosis has been widely studied and proved to have an important role in tumor suppression, providing new avenues for cancer therapy; glutathione peroxidase 4(GPX4) and selenoprotein thioredoxin reductase(TXNRD1) are important regulatory targets in ferroptosis.Warburg effect is one of the important energy sources for cancer hypermetabolism, and pyruvate kinase isoenzyme 2 (PKM2) is a key metabolism enzyme that is important in this effect.
View Article and Find Full Text PDFA Case Report of an Immature Pituitary-Specific Transcription Factor 1 (PIT1)-Lineage Pituitary Neuroendocrine Tumor Along With Its Cytology and Ultrastructural Studies.
Cureus
December 2024
Department of Pathology, Section of Oncopathology and Morphological Pathology, Faculty of Medicine, University of Miyazaki, Miyazaki, JPN.
Immature pituitary-specific transcription factor 1 (PIT1)-lineage pituitary neuroendocrine tumors are composed of PIT1-lineage cells with cytological atypia and limited differentiation. These tumors are rare and no cytological features of this neoplasm have been reported. This study is the first to report the cytological features of an immature PIT1-lineage tumor.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!