Abstract：
:Immunohistochemical localization of androgen receptor (AR) was investigated in the rat oocytes during their development in the primary, secondary and antral follicles. The group of experimental Wistar rats included prepubertal female rats, killed at 30 days of age, and mature female rats killed at estrus or metestrus. Excised ovaries were submitted to immunohistochemical procedure in which polyclonal antibody against androgen receptor, avidin-biotin-peroxidase complex, and DAB were used. Characteristic changes in AR immunostaining intensity and localization in the oocyte compartments were observed during the oocyte growth. Relatively strong cytoplasmic AR immunostaining of oocytes from the primordial, primary and some secondary follicles became gradually weaker during the further oocyte development and was only weakly positive in the oocytes from the antral follicles. Germinal vesicles (GVs) usually displayed less intense AR immunostaining than cytoplasm and it was decreasing together with the cytoplasmic depletion of AR. On the contrary, nucleoli appeared as moderately AR-positive structures in the early secondary follicles and were strongly AR-positive in the multilaminar secondary and antral follicles. The presence of AR in the nucleoli persisted even when oocytes had undergone fragmentation in atretic follicles. These findings suggest that during the oocyte growth AR translocates from the oocyte cytoplasm to GV, and then to the nucleolus, which seems to become the main target for this receptor. A possible role of AR in the GV nucleolus is obscure. However, nucleolus contains rRNA genes and is the site of an active transcription, so the role of AR as a ligand-activated, transcriptional factor cannot be excluded.
journal_name
Folia Histochem Cytobioljournal_title
Folia histochemica et cytobiologicaauthors
Szołtys M,Słomczyńska M,Tabarowski Zsubject
Has Abstractpub_date
2003-01-01 00:00:00pages
59-64issue
2eissn
0239-8508issn
1897-5631journal_volume
41pub_type
杂志文章abstract：:The biology of breast cancer is closely releted to sex steroid hormones. Estrogen receptor beta is overexpressed in around 70% breast cancer cases, referrd to as "ER positive". Estrogens bind to estrogen receptor and stimulate the transcription of genes involved in control of cell proliferation. Moreover, estrogens ma...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：10.2478/v10042-009-0047-6
更新日期：2009-01-01 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：:Lung cancer is the leading cause of death worldwide. High mortality comes out mainly of the fact that majority of the cases are diagnosed in advanced stadium. An expanded diagnostics of precancerous conditions would certainly contribute to lowering the mortality rate. Many of the molecular changes accompanying the mul...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：10.2478/v10042-008-0013-8
更新日期：2008-01-01 00:00:00
abstract：:Uterine leiomyoma is the most common tumour in women with a reported incidence of 25-30%. The tumors are benign, composed of smooth muscle cells with variable amount of collagen - rich fibrous tissue. It is well established that accumulation of extracellular matrix in leiomyoma is key feature of tissue fibrosis. Howev...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：
更新日期：2007-01-01 00:00:00
abstract：:Tuberculosis (TB) still remains the leading cause of mortality due to bacterial pathogen. The only currently available vaccine against TB, Bacille Calmette-Guérin (BCG) is at best credited with a 50% overall protective efficacy. Skin testing with purified protein derivative (PPD) from Mycobacterium tuberculosis is the...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：10.2478/v10042-008-0044-1
更新日期：2008-01-01 00:00:00
abstract：:The aim of this study was to examine the prevalence and clinicopathological significance of KRAS point mutation in endometrial hyperplasia and carcinoma. We analysed KRAS in 11 cases of complex atypical hyperplasia and in 49 endometrial carcinomas using polymerase chain reaction associated with restriction fragment le...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：10.2478/v10042-009-0014-2
更新日期：2009-01-01 00:00:00
abstract：:Lipotubuloids, structures containing lipid bodies and microtubules, are described in ovary epidermal cells of Ornithogalum umbellatum. Microtubules of lipotubuloids can be fixed in electron microscope fixative containing only buffered OsO(4) or in glutaraldehyde with OsO(4) post-fixation, or in a mixture of OsO(4) and...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：10.5603/fhc.2011.0040
更新日期：2011-01-01 00:00:00
abstract：:Grid technology has enabled the clustering and the efficient and secure access to and interaction among a wide variety of geographically distributed resources such as: supercomputers, storage systems, data sources, instruments and special devices and services. Their main applications include large-scale computational ...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：10.2478/v10042-009-0116-x
更新日期：2009-01-01 00:00:00
abstract：:Dendritic cells (DCs) are regarded as the most potent antigen presenting cells that are well suited to activate T cells toward various antigens, such as tumor-associated antigens, due to their costimulatory activity. There is evidence that DCs are of diverse origin, with at least two types of myeloid and lymphoid prec...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：
更新日期：2004-01-01 00:00:00
abstract：:Polycystic ovary syndrome (PCOS) is an endocrinological and metabolic disorder which may concern about 3-8% of women. Some PCOS women have the increased leptin concentration in blood serum. Leptin concentration is higher in patients with high body mass index (BMI) and impaired tissue sensitivity to insulin. The aim of...
journal_title：Folia histochemica et cytobiologica
pub_type： 临床试验,杂志文章
doi：10.2478/v10042-009-0032-0
更新日期：2009-01-01 00:00:00
abstract：:The localization of estrogen receptor alpha (ERalpha) in the ovaries of postmenopausal women is a very up-to-date topic in the aspect of using estrogens therapy in the clinical situations of different type. In ovaries of reproductive age women ERalpha is present in ovary stroma, theca and granulosa cells, ovary surfac...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：
更新日期：2007-01-01 00:00:00
abstract：:Early recognition of prostate cancer (PC) based on biological markers could be helpful in identification of differences in benign and malignant lesions and facilitate further precise indication for more aggressive treatment. Therefore, the aim of our study was to assess expression of hTERT (human telomerase reverse tr...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：10.5603/FHC.2013.0010
更新日期：2013-01-01 00:00:00
abstract：:Differentiation of the lingual taste discs (TDs) was studied in tadpoles of Rana esculenta, Hyla arborea and Pelobatesfuscus by means of LM, TEM, and SEM. The process of differentiation of mucous cells (MCs) within a TD anlage was investigated subsequently from 39th to 46th Gosner's developmental stage. In R. esculent...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：INTRODUCTION:Fascins are a group of proteins taking part in the maintenance of a proper structure of the cellular cytoskeleton. Fascin-1 is an actin-bundling protein present in neurons, fibroblasts, endothelial, smooth muscle, dendritic and mesenchymal cells whereas lack of its expression is characteristic of epithelia...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：10.5603/FHC.a2018.0011
更新日期：2018-01-01 00:00:00
abstract：:The polytrophic ovarioles of Panorpa communis are differentiated into a terminal filament, germarium and vitellarium. The germarium contains cystoblasts and germ cell clusters at early stages of their differentiation. At the base of germarium the cystocytes become morphologically diversified. One of the central cells ...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：
更新日期：1996-01-01 00:00:00
abstract：:After dmPGE2 treatment, both alone or together with streptozotocin, the lower, statistically significant total PL contents (in mumoles P per mg of protein) in rat liver Golgi-rich membrane fractions were found. In these groups of investigated rats, the percentage of PE+PA were statistically significantly lower than in...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：
更新日期：1986-01-01 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：:Tyrosine phosphorylation of numerous proteins is one of the earliest events detectable during Fcgamma receptor-mediated phagocytosis. We demonstrate that IgG-coated particles associated with the surface of macrophages are enriched with numerous tyrosine-phosphorylated proteins. During particle internalization the prot...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：:To investigate the expression of CD44 in colorectal cancer and examine its association with clinicopathological features, bcl-2, p53 and long-term outcome, paraffin-embedded tumour specimens from 61 patients with Dukes stage B (AJCC/UICC stage I) and 39 patients with Dukes stage C (AJCC/UICC stage III) colorectal aden...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：:Pancreatic acinar cell metaplasia of the gastric mucosa is a newly recognized entity. Its physiological relevance and association with other gastric pathological conditions remains to be elucidated. We studied morphology of pancreatic metaplasia of the gastric mucosa in 15 cases. Two morphological forms of pancreatic ...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：
更新日期：1994-01-01 00:00:00
abstract：:The structure of epidermis and appearance of keratinocytes is described in intact skin specimens from human corpses stored after death under refrigeration. Two groups of alterations can be identified depending on the epidermal layer. In the spinous layer, the cells are characterized by crescent-shaped nuclei surrounde...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：:The advent of DNA and RNA labelling techniques which allow non-autoradiographic detection of specific nucleic acid sequences has opened new possibilities for rapid diagnosis at the nucleic acid level. There are already practical applications. However, in order to fully compete with radioactive procedures an increase i...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：
更新日期：1986-01-01 00:00:00
abstract：INTRODUCTION:Aging causes morphological and functional changes in the thyroid gland. Free radicals play a key role in the pathology of normal aging. Vimentin and cytokeratin are cytoskeletal intermediate filaments that are often used as indirect indices of tissue injury. The aim of the study was to clarify the age-rela...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：10.5603/FHC.a2018.0015
更新日期：2018-01-01 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 activity of delta (5)3 beta-hydroxysteroid dehydrogenase was examined histochemically in 6 to 10 days aged horse blastocysts. A positive reaction was noted in the blastomeres of all embryos incubated in medium with substrate. Measurable amounts of progesterone, androgens and estrogens were found in blastocysts on ...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：
更新日期：1985-01-01 00:00:00
abstract：:The effect of quercetin and heat shock on the Hsp72 level and distribution in HeLa cells was studied by Western blotting, indirect immunofluorescence and immunogold electron microscopy. In control cells and after quercetin treatment, Hsp72 was located both in the cytoplasm and in the nucleus in comparable amounts. Aft...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：:The Ubiquitin-Proteasomes System (UPS) and autophagy, two main intracellular protein degradation pathways within the eukaryotic cells which were originally regarded as rather independent, seem to be very closely related. Proteasome inhibitors, including the multipathway inhibitor bortezomib, are drawing increased atte...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章,评审
doi：10.5603/FHC.2013.0036
更新日期：2013-01-01 00:00:00
abstract：:Stimulus-induced changes in free cytosolic Ca2+ in different types of plant cells have been monitored with the aid of fluorescent calcium indicator dyes. However, there is no simple and convenient method for introducing these dyes into the plant cell cytoplasm. This paper reports tests of different procedures for load...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:A method has been developed for isolation of cells from the efferent ductules of the rat epididymis to obtain a population of epithelial cells. The technique depends on a transfer of segments of the ductules into a new isolation medium and gradual purification from fat cells, fibroblasts, collagen fibres and smooth mu...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：
更新日期：1985-01-01 00:00:00
abstract：:Mucins have been shown to be aberrantly overexpressed in various diseases including cystic fibrosis, asthma, and cancer. Recent studies have uncovered the roles of these mucins in the pathogenesis of cancer. The presence of MUC-1 has also been detected on the cell surface of multiple myeloma (MM) cells in peripheral b...
journal_title：Folia histochemica et cytobiologica
pub_type： 杂志文章
doi：10.5603/fhc.2011.0089
更新日期：2011-01-01 00:00:00
