Abstract:
INTRODUCTION:Previous studies analyzing ghrelin and obestatin expression in thyroid gland tissue are not unanimous and are mostly related to ghrelin. The role of ghrelin and obestatin in the thyroid gland appears very interesting due to their probable involvement in cell proliferation. Furthermore, since the thyroid gland is associated with the maintenance of energy balance, the relationship between ghrelin, obestatin and thyroid function is worthy of consideration. The aim of the study was to assess ghrelin and obestatin immunocytochemical expression in nodular goiter (NG), papillary cancer (PTC) and medullary cancer (MTC). MATERIAL AND METHODS:Analyzed samples included 9 cases of NG, 8 cases of PTC and 11 cases of MTC. The analysis of ghrelin and obestatin expression was performed by use of the immunohistochemical (IHC) EnVision system and evaluated with filter HSV software (quantitative morphometric analysis). RESULTS:Quantitative ghrelin expression in MTC cells was higher than in NG (p = 0.013) and correlated negatively with the size of the tumor (r= -0.829, p < 0.05). We did not observe any differences in ghrelin expression neither between MTC and PTC nor between NG and PTC. Obestatin immunoexpression pattern in all analyzed specimens was irregular and poorly accented. The strongest immunoreactivity for obestatin was demonstrated in NG. In MTC obestatin expression was significantly weaker than in NG and PTC (p < 0.05 in both cases). In NG the intensity of obestatin immunostaining was significantly higher than that of ghrelin (p = 0.03). Conversely, ghrelin expression in MTC was definitely more evident than obestatin immunoreactivity (p < 0.01). There was no statistically significant difference between ghrelin and obestatin expression in PTC. No correlations were detected between reciprocal tissue expressions of ghrelin and obestatin in the analyzed specimens of NG, PTC or MTC. CONCLUSIONS:The differences between ghrelin expression in NG and MTC suggest that ghrelin may be involved in thyroid cell proliferation. The differences between ghrelin and obestatin immunoreactivity in benign and malignant thyroid tumors could support the theory of alternative transcription of the preproghrelin gene and independent production of ghrelin and obestatin.
journal_name
Folia Histochem Cytobioljournal_title
Folia histochemica et cytobiologicaauthors
Gurgul E,Kasprzak A,Blaszczyk A,Biczysko M,Surdyk-Zasada J,Seraszek-Jaros A,Ruchala Mdoi
10.5603/FHC.a2015.0004subject
Has Abstractpub_date
2015-01-01 00:00:00pages
19-25issue
1eissn
0239-8508issn
1897-5631pii
VM/OJS/J/39464journal_volume
53pub_type
杂志文章abstract::At present, not much is known about progesterone receptor (PR) expression and localization in postmenopausal women ovaries. In the ovaries of reproductive age women, PR is localized in internal theca and granulosa cells, corpus luteum, ovary surface epithelium (OSE) and in stroma. PR expression depends on the serum co...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.2478/v10042-008-0038-z
更新日期:2008-01-01 00:00:00
abstract::The purpose of the present study was to evaluate morphologically the response of feline teeth pulp to direct pulp capping with two different self-etch adhesive systems. Twenty-four cavities in feline teeth were mechanically exposed and assigned to one of two experimental groups: AdheSE + Tetric Ceram (the ASE group), ...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.5603/20325
更新日期:2012-01-01 00:00:00
abstract::Light microscopic histochemical studies to visualize semicarbazide-sensitive and H2O2-generating amine oxidase (SSAOX, benzylamine oxidase, BAOX; EC 1.4.3.6?) are usually performed with the coupled peroxidatic oxidation technique of Ryder et al. [25]. For methodological reasons this procedure has its limitations and w...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:1994-01-01 00:00:00
abstract::A literature survey was performed of human cathepsin D gene, cathepsin D biosynthesis, posttranslatory modifications, transport within the cell, substrate specificity and catalytic effect. Methods used to determine the activity and level of this proteinase as well as its role in the biochemistry and pathobiochemistry ...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章,评审
doi:10.2478/v10042-008-0003-x
更新日期:2008-01-01 00:00:00
abstract:INTRODUCTION:Struma ovarii (SO) is a monodermal teratoma in which thyroid tissue comprises more than 50% of the tumour. Papillary thyroid cancer (PTC) in SO is a rare finding, as only 5% of SO cases undergo malignant transformation. Malignant SO is usually asymptomatic and infrequently diagnosed preoperatively. Because...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.5603/FHC.a2019.0004
更新日期:2019-01-01 00:00:00
abstract::The goal of our study was to assess suitability of FNA biopsy material as a source of samples (cell suspension) for DNA ploidy assessment in neoplastic tumors using flow cytometry. DNA ploidy is an established prognostic factor in many types of cancers. Aneuploid breast tumors are characterized by increased aggressive...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:2002-01-01 00:00:00
abstract::Exposure to glucocorticoids (GCs) leads to numerous changes in various biological systems including the reproductive system. The aim of the present study was to find out whether dexamethasone (Dex), a widely used GC, would influence the apoptosis and expression of Bax, an important proapoptotic protein, in the mouse t...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.2478/v10042-009-0041-z
更新日期:2009-01-01 00:00:00
abstract::Histochemical and immunohistochemical methods should often but not always complement standardized histopathologic procedures. Here, we illustrate use of these ancillary techniques in a report of scrotal leiomyosarcoma. 62-year-old male patient presented with a palpable, subcutaneous 2,5 cm wide tumor arising from dart...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.5603/FHC.2013.0046
更新日期:2013-01-01 00:00:00
abstract::The study aimed at examination of tissue expression of polysaccharides and secretory mucin 5AC (MUC5AC) in young patients (up to 25 years of age) with a symptomatic gallstones. For comparison, patients most frequently subjected to cholecystectomy were studied, i.e. patients of approximately 50 years of age with the sa...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.2478/v10042-010-0053-8
更新日期:2010-12-01 00:00:00
abstract:INTRODUCTION:In traditional medicine, Citrullus colocynthis is used to treat diabetes, hyperlipidemia, cardiovascular diseases, inflammation, and oxidative stress, all of which can appear when a diet rich in vegetable fats, such as palm oil, is continuously consumed. Such high-fat diets are chronic stressors of the hyp...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.5603/FHC.a2017.0011
更新日期:2017-01-01 00:00:00
abstract::To date four types of glial cells have been identified in central nervous system: astrocytes, oligodendrocytes, microglia, ependymocytes. The latest results indicate the existence of the fifth glial type-synantocytes from the Greek word synanto that is for contact. Synantocyte processes reach neurons, astrocytes, olig...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章,评审
doi:10.2478/v10042-010-0033-z
更新日期:2010-01-01 00:00:00
abstract::Microtubules present in the epidermis of Ornithogalum umbellatum ovary in the area of lipotubuloids (i.e. aggregates of lipid bodies surrounded by microtubules) are 25-51 nm in diameter. They consist mainly of 10 and 11, sometimes 9 and 12 protofilaments. An average diameter of microtubule consisting of 9 subunits is ...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:2006-01-01 00:00:00
abstract::Forty pituitary adenomas were immunostained with an antibody raised against the C-terminal fragment (101-109) of human prothymosin alpha (PT alpha). The strong positive immunostaining was found in the subpopulation of cell nuclei and intratumoral vessel walls, while the cytoplasm of adenoma cells was slightly immunopo...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.2478/v10042-009-0096-2
更新日期:2009-01-01 00:00:00
abstract::The present work deals with the histochemical, histoenzymological and micro-analytical study of the stomach of Littorina Littorea (L.). The results suggest the existence of intracellular digestion within the stomach cells. Thus, the occurrence of lysosomes in the mid-cytoplasm of stomach cells has been revealed by dem...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:1990-01-01 00:00:00
abstract::The chemical basis of the histochemical method for acetylcholinesterase described by Tago et al. was studied. The primary histochemical reaction of Tago's method is performed with diluted Karnovsky's medium, resulting in the in situ formation of Karnovsky's precipitate in minute quantities. The visualization of acetyl...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:1998-01-01 00:00:00
abstract::Primary lung cancer remains the leading cause of cancer death worldwide. Promoter hypermethylation is a major inactivation mechanism of tumor-related genes, and increasingly appears to play an important role in carcinogenesis. In the present study, we used quantitative methylation-specific PCR (Q-MSP) assays to analyz...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.5603/fhc.2011.0019
更新日期:2011-01-01 00:00:00
abstract::The K-ras gene is frequently mutated in colorectal cancer and has been associated with tumor initiation and progression; approximately 90% of the activating mutations are found in codons 12 and 13 of exon 1 and just under 5% in codon 61 located in exon 2. These mutations determine single aminoacidic substitutions in t...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.5603/fhc.2011.0097
更新日期:2011-01-01 00:00:00
abstract::Two hypotheses explain the role of adult progenitor cells in myocardial regeneration. Stem cell plasticity which involves mobilization of stem cells from the bone marrow and other niches, homing to the area of tissue injury and transdifferentiation into functional cardiomyocytes. Alternative hypothesis is based on the...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章,评审
doi:
更新日期:2005-01-01 00:00:00
abstract::T cell memory in comparison with B cell memory is not well understood. This review focuses on CD8+ and CD4+ memory T cells. In this article we try to define memory cells and also present models of memory T cells formation. We would also like to delineate their differentiation into distinct subsets. Long-lived memory T...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章,评审
doi:10.2478/v10042-008-0077-5
更新日期:2008-01-01 00:00:00
abstract::The presence and pattern of coexistence of catecholamine-synthesizing enzymes and some neuropeptides in nerve fibres supplying thoraco-cranial arteries of the sexually immature gilts were investigated in whole mount preparations. The studied substances included: tyrosine hydroxylase (TH), dopamine-beta-hydroxylase (D ...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:1995-01-01 00:00:00
abstract::It was demonstrated by a cytochemical method that the calcium-dependent ATPase was present in the germinating pollen grain. Immediately after hydration the enzyme was observed in the pollen plasmalemma. During germination, the chief sites of the enzyme activity were the plasmalemma around the aperture site and the cis...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:1993-01-01 00:00:00
abstract::The frequency of Helicobacter pylori infection in population can depend on the organism resistance, genetic condition, and bacterial strains virulence. A vacA gene, of mosaic structure, which encodes vacuolating cytotoxin is one of the known genes of H. pylori. The existence of several different genotypes of s and m r...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:2007-01-01 00:00:00
abstract::The effect of the NSP fraction and its four peptide constituents (A, C2, D and G) on the 3H-thymidine incorporation into REF and R-XC cells in vitro was described. Only peptide G (at concentration 5 micrograms/ml) affected the growth of the investigated cells, decreasing the 3H-thymidine uptake to 4-13% relative to un...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:1985-01-01 00:00:00
abstract::Culture of preimplantation embryos is complex and requires strictly defined culture media to sustain their viability and quality. In the current study, an effort was made to evaluate comprehensively the quality of mice embryos, grown in media enriched with IGF I, IGF II, EGF and TNFalpha. For that purpose, critically ...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:2001-01-01 00:00:00
abstract::In root meristems of 3 species (Secale cereale L., Vicia faba L. subsp. minor, Allium cepa L.) the durations of cell cycles and their phases were calculated using 3H-thymidine labelling. In the above species and in Helianthus annuus L. (parameters of the cell cycle determined earlier) the G1 and G2 phase durations wer...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:1989-01-01 00:00:00
abstract::A comparison of the number of mRNA molecules of histone H3 in 1 microg total RNA extracted from colon sections sampled during colonoscopy was used to evaluate cellular proliferation activity in the rectum and sigmoid, in normal tissue and in colitis ulcerosa. Samples with similar intensity of the disease were selected...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:2001-01-01 00:00:00
abstract::Recently identified biological risk factors in B-cell chronic lymphocytic leukemia (B-CLL) include ZAP-70 and CD38 expression. The present study was conducted to clarify whether a combined analysis could improve predictive impact of these two parameters. We examined the expression of ZAP-70 and CD38 by flow cytometry ...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.2478/v10042-008-0022-7
更新日期:2008-01-01 00:00:00
abstract::Using morphological criteria we describe the effect of maternal deprivation on the gonadotrophin-releasing hormone (GnRH) and GnRH-associated peptide (GAP) of the GnRH prohormone (proGnRH) in the preoptic area (POA)-hypothalamus during the weaning period. The immunohistochemical GnRH- and GAP-neuroanatomy was investig...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.2478/v10042-008-0108-2
更新日期:2010-01-01 00:00:00
abstract::Therapeutic outcomes of definitively treated non-small-cell lung cancer (NSCLC) are unacceptably poor. It has been proposed that the manipulation of dendritic cells (DCs) as a "natural" vaccine adjuvant may prove to be a particularly effective way to stimulate antitumor immunity. Presently, there is no standardized me...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.2478/v10042-008-0078-4
更新日期:2008-01-01 00:00:00
abstract::Twenty-four male volunteers (mean +/- SD: age 25.4+/-5.8 years, height 178.6+/-5.5 cm, body mass 72.1+/-7.7 kg) of different training background were investigated and classified into three groups according to their physical activity and sport discipline: untrained students (group A), national and sub-national level en...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:2004-01-01 00:00:00