Abstract:
:The increased ambient temperature affects the function of hypothalamic-pituitary-adrenal (HPA) axis. Since the correlation among vasopressin (VP), adrenocorticotropic hormone (ACTH) and corticosterone (CORT) responses to various stressors have been long recognized, the aim of this study was to reveal the aforementioned hormones production and morphology of the pituitary gland after exposure to acute heat. Rats were exposed to high ambient temperature (38 °C) for 20 or 60 minutes. The circulating hormones were determined by an ELISA test or chemiluminescence's method. The results obtained show the elevation in ACTH and CORT secretion depending on the duration of heat exposure. The VP concentration increased only after prolonged exposure to heat (60 min). The pituitary morphology was examined by routine and fluorescent immunohistochemistry as well as electron microscopy. Observed changes in the anterior and posterior pituitary well corresponded to circulating hormones, regarding the volume density of ACTH-immunopositive cells, percentage of ACTH immunopositive area v. total area and number of VP-immunopositive containing varicose fibers per total area. Acute heat exposure also induced changes in shapes of ACTH-immunopositive cells. Cells appeared stellate with numerous slender cytoplasmic processes and degranulated, which is the most obvious after 20 min. In addition, immunopositivity of endothelial and anterior pituitary cells for VP suggests its influence on ACTH secretion.
journal_name
Folia Histochem Cytobioljournal_title
Folia histochemica et cytobiologicaauthors
Jasnic N,Korac A,Velickovic K,Golic I,Djordjevic J,Djurasevic S,Djordjevic I,Vujovic P,Cvijic Gdoi
10.2478/v10042-010-0071-6subject
Has Abstractpub_date
2010-12-01 00:00:00pages
507-12issue
4eissn
0239-8508issn
1897-5631pii
V4HL865756M58520journal_volume
48pub_type
杂志文章abstract::Double fluorescence staining with o-phthalaldehyde (OPT) and propidium diiodide (PI) was applied to measure the nuclear protein SH/DNA ratio in species differing in 2C DNA content. It has been shown that protein SH/DNA ratio decreases along with the increase in 2C DNA content. In endosperm, this ratio is higher than i...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:1993-01-01 00:00:00
abstract::Animals with experimental uremia, which underwent thyroparathyroidectomy, reveal numerous metabolic disorders that can influence morphology and activity of endocrine cells of the scattered neuroendocrine system. The aim of the study was the evaluation of the influence of thyroparathyroidectomy in rats with chronic ren...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:2001-01-01 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::We report the observations made on 101 healthy non-smoking men aged 21-40 (50 from two industrial suburbs of the big city of Antwerp and 51 from Peer, a predominantly rural municipality with 14,622 inhabitants, 70 km east of Antwerp, chosen as the "control" area in spite of its intensive agriculture). Persons with kno...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:2001-01-01 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::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::MIB-I is a proliferative activity marker of multiform glioblastomas which are the most frequent tumors of the central nervous system. They are characterizad by differential rate and prognosis. The aim of the study was to determine the proliferative activity of multiform glioblastomas and estimation of the correlation ...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:2001-01-01 00:00:00
abstract::Different cytokine profiles allow to divide the CD4+ lymphocytes into Th1, Th2 and Th0 subtypes. It has been observed that the Th2 cells are more efficient supporters for HIV-1 replication than the Th1 cells. The Th1 and the Th2 cells were isolated from peripheral blood lymphocytes of HIV-1 seronegative individuals an...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:2000-01-01 00:00:00
abstract:INTRODUCTION:Sucla2, a β subunit of succinyl coenzyme A synthase, is located in the mitochondrial matrix. Sucla2 catalyzes the reversible synthesis of succinate and adenosine triphosphate (ATP) in the tricarboxylic acid cycle. Sucla2 expression was found to be correlated with the capacitation of boar spermatozoa. We ha...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.5603/FHC.a2016.0020
更新日期:2016-01-01 00:00:00
abstract::Factors controlling complement activation appear to exert a protective effect on pregnancy. This is particularly important in women with thrombophilia. The aim of this study was to determine the transcript and protein levels of complement decay-accelerating factor (DAF) and membrane cofactor protein (MCP) in the place...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.5603/19758
更新日期:2012-10-08 00:00:00
abstract::The present study was aimed at disclosing axotomy- and inflammation-induced changes in the chemical coding of retrogradely labelled distal bowel-projecting neurons in the porcine IMG. Particular attention was paid to the changes in the expression pattern of vasoactive intestinal polypeptide and nitric oxide synthase (...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:2002-01-01 00:00:00
abstract::Coccoids (Coccinea, Coccoidea, Coccomorpha, scale insects, scales) are a highly diverse group of ectoparasitic insects. They comprise 2 subgroups: primitive archaeococcoids (= Orthezioidea sensu Koteja) and advanced neococcoids (= Coccoidea sensu Koteja). The ovaries of coccoids consist of numerous short telotrophic-m...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章,评审
doi:
更新日期:1998-01-01 00:00:00
abstract::Spermatogenesis involves the realization of a particular genetic program which requires a specific environment ("niche"). Multiplication, differentiation and apoptosis of male germ cells are finely regulated by pituitary hormones (mainly LH and FSH), and by a complex network of factors originating from both the somati...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.2478/v10042-009-0061-8
更新日期:2009-01-01 00:00:00
abstract::Diplotene oocyte nucleus of the scorpionfly Panorpa communis is transcriptionally silent and contains numerous nuclear bodies including interchromatin granule clusters (IGCs). The latter consist of the granules of 30-50 nm in diameter and contain IGC marker protein SC35 as well as RNA polymerase II. In this study, we ...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.2478/v10042-009-0006-2
更新日期:2009-01-01 00:00:00
abstract::The family of epidermal growth factor (EGF, EGFR, c-erbB-2) plays a pivotal role in gastric cancer progression, invasion and metastasizing. Helicobacter pylori infection is known to contribute significantly to the formation and progression of gastric cancer. However, the mechanisms responsible for this process have no...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.2478/v10042-009-0102-3
更新日期:2009-01-01 00:00:00
abstract::A child was operated 3 times because of a recurrent growth hormone- and prolactin-producing pituitary adenoma. Between the operations she was treated for five years with bromocriptine. The characteristics of the tumour cell population collected after the last operation was now examined by electron microscopy, immunocy...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:1997-01-01 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::The aim of our study was to investigate the dynamics of the alterations of soluble human leukocyte antigen-G (sHLA-G) concentrations in sera of healthy non-pregnant women, as well as healthy pregnant women and patients with pre-eclampsia. Thirty five patients with pre-eclampsia, 52 healthy pregnant women, and 24 healt...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.5603/fhc.2012.0023
更新日期:2012-07-05 00:00:00
abstract::The effect of cadmium (Cd) on the thyroid and parathyroid glands was examined following a 12-week exposure of rats to 5 or 50 mg Cd/dm3. Immunohistochemical methods were used to determine calcitonin (CT), calcitonin-gene related peptide (GGRP), parathormone (PTH), somatostatin (ST), synaptophysin (SPh) and neuron-spec...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:2001-01-01 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::Progress in recognition of structure and function in a variety of cells has always been linked to development of new research techniques. Beyond doubt, immunocytochemical techniques belong to such new methods. However, the techniques had not been widely applied to electron microscopy until colloidal gold was introduce...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章,评审
doi:
更新日期:2001-01-01 00:00:00
abstract::It was found that the BCG vaccine injected subcutaneously to the rats enhances the process of lung fibrosis induced by bleomycin. Pretreatment of rats with this vaccine results in accumulation of activated macrophages in lung interstitium and in the bronchoalveolar spaces. It may be suggested that the activated macrop...
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 study included 61 patients (35 men and 26 women) ages 47 to 74 in whom a primary liver cancer was diagnosed or neoplastic metastases to the liver were confirmed in the course of a cancer of the stomach or the large bowel. In each patient the endogenous serum diazepam concentration (ESDC) was estimated chromatograp...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:2001-01-01 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::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::The ultrastructural localization of a proteasomal antigen in human spermatozoa was studied by means of immunolabeling with the MPC21 monoclonal antibody and secondary gold labeled antibody with 1.4 nm gold particles in combination with silver enhancement reaction using pre-embedding technique. The labeling was found i...
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::The aim of this study was to visualize the expression of androgen receptor, cytochrome P450 aromatase and FSH receptor mRNAs in various structures of porcine ovary. Porcine ovaries were frozen in liquid nitrogen, and 8 microm sections were prepared for in situ hybridization. In the small, medium and large antral folli...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:
更新日期:2001-01-01 00:00:00
abstract::The aim of this study was to estimate distant results after discontinuation of long term lamivudine treatment in children with chronic hepatitis B. Furthermore, the emergence of HBV polymerase gene variants in YMDD motif during therapy was examined. Additionally, the most commonly occurring type of mutation in the pol...
journal_title:Folia histochemica et cytobiologica
pub_type: 杂志文章
doi:10.2478/v10042-08-0107-3
更新日期:2010-01-01 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