Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "immunohistochemistry" wg kryterium: Temat


Tytuł:
Differential relationship between two hypoxia markers: HIF-1α and GLUT1 and classic prognostic factors in invasive breast carcinoma
Zróżnicowana zależność pomiędzy dwoma markerami hipoksji: HIF-1α i GLUT1 a klasycznymi czynnikami prognostycznymi w inwazyjnym raku piersi
Autorzy:
Żyromska, Agnieszka
Andrusewicz, Hanna
Łysik, Joanna
Jóźwicki, Wojciech
Wiśniewski, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/1029826.pdf
Data publikacji:
2016
Wydawca:
Medical Communications
Tematy:
GLUT1
HIF-1α
hypoxia
immunohistochemistry
prognostic factors
Opis:
Background: Tumor hypoxia is an adverse prognostic factor which promotes cancer aggressiveness and limits its radio- and chemosensitivity. The aim of our study was to explore the relationship between endogenous hypoxia markers and classic prognostic factors, including clinical stage and the expression of ER, PR, and HER2 in primary untreated breast carcinoma. Methods: A retrospective immunohistochemical analysis of archived tissue blocks collected from 153 women, who underwent total mastectomy and lymph node dissection, included the expression of two hypoxia-related proteins: HIF-1α and GLUT1. Results: GLUT1 labelling index (LI) showed a positive correlation with T stage (R = 0.18, p = 0.026) and HER2 status (R = 0.25, p = 0.002), and a negative correlation with the expression of ER (R = −0.19, p = 0.017) and PR (R = −0.17, p = 0.032). HIF-1α LI showed a positive correlation with ER expression (R = 0.16, p = 0.045). In the multivariate regression analysis, a different relationship between classic prognostic factors and the two tested hypoxia proteins was proven. Higher GLUT1 expression correlated with ER and PR negativity (p = 0.02 and p = 0.01, respectively) as well as with higher expression of HER2 (p = 0.04). HIF-1α showed no association with PR and HER2, but a positive correlation with ER (p = 0.02). Neither of the hypoxia proteins was associated with a tumor grade. Only one clinical feature, T stage, correlated with both of the hypoxia markers: positively with GLUT1 (p = 0.049) and negatively with HIF-1α (p = 0.01) expression. Conclusions: In breast cancer, GLUT1 expression may be considered an additional prognostic factor which correlates with an adverse status of HER2 and hormonal receptors, and indicates a more hypoxic, radio- and chemotherapy refractory profile of carcinoma.
Tło: Hipoksja w  guzie nowotworowym stanowi niekorzystny czynnik prognostyczny, ogranicza jego promienioi chemiowrażliwość oraz promuje bardziej agresywny przebieg choroby. Przewidywanie rokowania i odpowiedzi na leczenie wymaga wiedzy o związku hipoksji z uznanymi czynnikami prognostycznymi. Celem badania było określenie zależności pomiędzy endogennymi markerami hipoksji w  pierwotnym przewodowym raku piersi a  klasycznymi czynnikami prognostycznymi, takimi jak stopień zaawansowania klinicznego oraz ekspresja receptorów ER, PR i HER2. Metody: Retrospektywna analiza immunohistochemiczna archiwizowanych bloczków tkanek pobranych od 153 kobiet, poddanych mastektomii i limfadenektomii pachowej, objęła ekspresję dwóch związanych z hipoksją białek: HIF-1α i GLUT1. Wyniki: Indeks wiązania GLUT1 (GLUT1 LI) wykazał korelację dodatnią z wielkością guza (R = 0,18, p = 0,026) i ekspresją HER2 (R = 0,25, p = 0,002) oraz ujemną z ekspresją ER (R = −0,19, p = 0,017) i PR (R = −0,17, p = 0,032). HIF-1α LI korelował wyłącznie z ekspresją ER (R = 0,16, p = 0,045). W analizie wieloczynnikowej wykazano zróżnicowaną zależność pomiędzy klasycznymi czynnikami prognostycznymi i testowanymi markerami hipoksji. GLUT1 LI korelował negatywnie z ekspresją ER i PR (odpowiednio p = 0,02 i p = 0,01) oraz pozytywnie z ekspresją HER2 (p = 0,04). Nie udowodniono korelacji pomiędzy HIF-1α LI a ekspresją PR czy HER2, natomiast wykazano jego dodatnią zależność z ekspresją ER (p = 0,02). Żaden marker hipoksji nie korelował ze stopniem zróżnicowania histologicznego nowotworu. Tylko jeden kliniczny czynnik – wielkość guza (T) – korelował z ekspresją badanych białek: dodatnio z GLUT1 (p = 0,049), a ujemnie z HIF-1α (p = 0,01). Wnioski: Ekspresja GLUT1 w raku piersi może stanowić dodatkowy czynnik prognostyczny, korelujący z niekorzystnym statusem receptora HER2 i receptorów hormonalnych oraz wskazywać na bardziej hipoksyczny, oporny na radioi chemioterapię, profil raka.
Źródło:
Current Gynecologic Oncology; 2016, 14, 4; 197-203
2451-0750
Pojawia się w:
Current Gynecologic Oncology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Significance of mucin expression in pancreatic intraepithelial neoplasia (PanIN) – precursor lesions of pancreatic ductal adenocarcinoma (PDAC)
Autorzy:
Zińczuk, J.
Zaręba, K.
Pryczynicz, A.
Kuczyńska, P.
Boroń, Z.
Ustymowicz, W.
Maciorkowska, M.
Ćwiklińska-Dworakowska, M.
Baszun, M.
Jelski, S.
Guzińska-Ustymowicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/1918638.pdf
Data publikacji:
2018-06-18
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
Mucin
immunohistochemistry
pancreatic intraepithelial neoplasia
PanIN
Opis:
Purpose: To evaluate chosen mucins (mucin 1, 4, 5AC) expression in pancreatic intraepithelial neoplasia, which is a precursor lesion of pancreatic ductal adenocarcinoma. Materials and methods: The study group included 70 patients operated on due to inflammation, cysts and pancreatic ductal adenocarcinoma with pancreatic intraepithelial neoplasia revealed additionally. Mucin 1, 4 and 5AC expression was assessed by immunohistochemical method using polyclonal antibodies. Results: Statistical analysis proved a positive correlation between the expression of mucin 1, 4 and 5AC proteins and the presence and staging of pancreatic intraepithelial neoplasia (p<0.001). Statistically significant correlations were determined between mucin 1, 4 and 5AC and the location of PanIN lesion in the pancreas. Positive correlations were found between mucin 5AC expression and the type of a basic disease (p=0.014). Differences in the expression of MUC 1, 4 and 5AC proteins between healthy pancreatic ducts and various stages of pancreatic intraepithelial neoplasia were statistically significant (p<0.001). Conclusions: Overexpression of mucin 1, 4 and 5AC is related to the presence of pancreatic intraepithelial neoplasia. This suggests that overproduction of mucus is a phenomenon occurring early in the process of carcinogenesis in the pancreas and has its beginning in precancerous lesions of an early stage.
Źródło:
Progress in Health Sciences; 2018, 8(1); 63-73
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immunohistochemiczna metoda identyfikacji komórek CD133+ w glioblastoma
Immunohistochemical identification methods of CD133+ cells in glioblastoma
Autorzy:
Zielonka, Emil
Powiązania:
https://bibliotekanauki.pl/articles/1053634.pdf
Data publikacji:
2013
Wydawca:
Medical Communications
Tematy:
CD133
cancer stem cells
confocal microscopy
immunohistochemistry
glioblastoma
immunohistochemia
mikroskopia konfokalna
nowotworowe komórki macierzyste
Opis:
Glioblastoma (GBM, WHO grade IV) is the most lethal type of brain tumours. Despite advances in radiotherapy, chemotherapy and surgical techniques, this tumour is still associated with a median overall survival of approximately 1 year. Histopathological features of GBM include nuclear atypia, foci of palisading necrosis, microvascular proliferation and robust mitotic activity. Glioblastoma is one of the best vascularized tumours in humans and its proliferation is hallmarked by a distinct proliferative vascular component. Studies of glioblastoma’s vascularization have cast some light on the role of non-endothelial cells in tumour neoangiogenesis. A characteristic feature of protein CD133 is its rapid down-regulation during cell differentiation, which makes it a unique cell surface marker for identification of stem cells in brain tissue. CD133+ tumour cells are located mainly in perivascular niches. CD133 positive cells were also found in blood vessels wall. The aim of this study was to optimize immunohistochemical staining method to facilitate identification of cells recognized by anti-CD133 antibody in paraffin-embedded glioblastoma tissue sections. In this study, several pretreatments, detection systems, dilution of antibody and time incubation were used. Immunohistochemical staining method in which autoclave, a buffer pH 9.0 and LSAB+System-HRP were used gave the best result.
Najczęstszym i jednocześnie najgorzej rokującym nowotworem pochodzenia astrocytarnego jest glioblastoma (IV stopień złośliwości według Światowej Organizacji Zdrowia). Obraz mikroskopowy glioblastoma charakteryzuje się atypią komórkową, obecnością ognisk martwicy palisadowej oraz proliferacją drobnych naczyń. Wyróżniamy dwa typy glioblastoma: pierwotny i wtórny. Jedną z podstawowych cech histopatologicznych tego nowotworu jest obecność proliferacji naczyniowych. Proliferacje naczyń glioblastoma rozpoznawane są jako wielowarstwowe kłębki rozrośniętych i mitotycznie aktywnych komórek endotelialnych. Komórki macierzyste odgrywają znaczącą rolę w tworzeniu sieci naczyń krwionośnych nowotworu za sprawą różnicowania w kierunku komórek endotelialnych. Za marker nowotworowych komórek macierzystych uważa się antygen CD133. Komórki nowotworu wykazujące ekspresję tego białka rozpoznawanego przez odpowiednie przeciwciała zlokalizowane są w niszach otaczających naczynia krwionośne występujące w masie nowotworu. Komórki CD133+ występują również w ścianach naczyń krwionośnych. Celem przeprowadzonych badań było opracowanie optymalnej immunohistochemicznej metody barwienia, z wykorzystaniem przeciwciała przeciw CD133, która ułatwi identyfikację komórek macierzystych. Materiał do badań stanowiły preparaty histopatologiczne pobrane do rutynowych badań histopatologicznych w czasie zabiegu operacyjnego z wcześniej rozpoznanymi przypadkami glioblastoma. Badania obejmowały różne metody barwień immunohistochemicznych z wykorzystaniem zróżnicowanych sposobów odmaskowywania antygenów, z zastosowaniem odmiennych buforów, systemów detekcyjnych oraz rozcieńczeń przeciwciała i czasów inkubacji preparatów z przeciwciałem. Najlepsze wyniki barwienia immunohistochemicznego otrzymano w preparatach, w których w celu odmaskowywania antygenu zastosowano autoklaw, bufor o pH 9,0 i system detekcyjny LSAB+System-HRP.
Źródło:
Aktualności Neurologiczne; 2013, 13, 4; 253-257
1641-9227
2451-0696
Pojawia się w:
Aktualności Neurologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Klinicznie nieczynne hormonalnie guzy przysadki
NFPAs-non-functioning pituitary adenomas
Autorzy:
Zawada, Natalia Bożena
Kunert-Radek, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/1032601.pdf
Data publikacji:
2012
Wydawca:
Łódzkie Towarzystwo Naukowe
Tematy:
klinicznie nieczynne gruczolaki przysadki
guzy przysadki
immunohistochemia guzów przysadki
scyntygrafia receptorowa
receptory
dopaminergiczne
receptory somatostatynowe
leczenie operacyjne
radioterapia
nóż gamma
analogi somatostatyny
agoniści dopaminy
clinically non-functioning pituitary adenomas
pituitary tumours
immunohistochemistry of pituitary tumours
receptor scintigraphy
dopamine
receptors
somatostatin receptors
surgery
radiotherapy
gamma knife
somatostatin analogues
dopamine agonists
Opis:
The significant progress made in recent years, especially in the field of imaging techniques and immunohistochemistry, enables an earlier diagnosis and the treatment of clinically non-functioning pituitary adenomas (NFPAs). In spite of this, these tumours still remain an important medical issue for a large number of specialities. The aim of this article is to provide an overview of the etiopathogenesis, diagnosis and treatment of clinically non-functioning pituitary adenomas with special reference to the development of highly advanced methods in surgery as well as radiotherapy and, especially, in pharmacotherapy.
Istotny postęp, jaki dokonał się w ostatnich latach, zwłaszcza w zakresie rozwoju diagnostyki obrazowej i badań immunohistochemicznych, umożliwia wcześniejsze rozpoznawanie, a następnie leczenie nieczynnych hormonalnie gruczolaków przysadki (NFPAs). Mimo to guzy te dalej pozostają istotnym problemem klinicznym dla lekarzy wielu specjalności. Celem pracy jest szczegółowe przedstawienie poglądów na temat etiopatogenezy, obrazu klinicznego, diagnostyki i metod leczenia klinicznie nieczynnych hormonalnie gruczolaków przysadki ze szczególnym uwzględnieniem postępów w technikach chirurgicznych oraz rozszerzających się możliwości radioterapii, a szczególnie farmakoterapii.
Źródło:
Folia Medica Lodziensia; 2012, 39, 1; 85-136
0071-6731
Pojawia się w:
Folia Medica Lodziensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Protective effectiveness of anise against testicular ischemia and reperfusion injury: An experimental study in rats
Autorzy:
Yildizhan, E.
Akkus, M.
Ulger, B.V.
Asır, F.
Söker, S.
Gündüz, E.
Rençber, M.
Barçin, M.
Powiązania:
https://bibliotekanauki.pl/articles/16647584.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
Anise
testicle
ischemia
reperfusion
immunohistochemistry
Opis:
Testicular torsion is a frequently encountered clinical condition that requires urgent treatment. The aim of this study is to investigate the efficacy of Anise (Pimpinella anisum L.) in treating the pathological condition due to ischemia and reperfusion injury by using biochemical, histopathological and immunohistochemical methods. A total of 6 groups were formed with 8 male Wistar Albino rats in each group. Group 1 (n=8): control group, Group 2 (n=8): Anise aqueous solution was given orally 5 ml/kg by gavage for 30 days. Group 3 (n=8): Ischemia and Reperfusion (I/R) group, bilateral testicles were rotated 270° and reperfused after 30 minutes of ischemia. Group 4 (n=8): I/R+ Anise group, Group 5 (n=8): Anise+ I/R group and Group 6 (n=8): Anise+ I/R+ Anise group. The results of the Anise group and the Control group were similar. However, the damage in the I/R group was considerably more severe than in any of the other study groups. While it was observed that spermatogenic cells started to regenerate in the I/R+Anise group, edema and congestion were observed in the Anise+I/R group. In the Anise+I/R+Anise group, all histological findings and biochemical parameters were similar to those of the control group. It was observed that anise had protective effects in ischemia and reperfusion injury in rat testicles.
Źródło:
Polish Journal of Veterinary Sciences; 2023, 26, 2; 249-255
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Histopathologic and immunohistochemical lesions in liver of mink infected with Aleutian disease virus
Autorzy:
Valdovska, A.
Pilmane, M.
Powiązania:
https://bibliotekanauki.pl/articles/30104.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Aleutian disease
Aleutian mink disease parvovirus
animal infection
beta-defensin-2
histopathology
immunohistochemistry
liver
liver parenchyma
mink
nerve growth factor receptor
metalloproteinase
Opis:
Parvovirus of Aleutian disease causes mainly damage to kidneys, but immune complexes deposition and damage may occur also in other organs. In mink farms of Latvia the liver dystrophy or hepatic lipidosis of mink is widely distributed. The goal of this study was to examine probability of liver damage and regeneration of mink infected with Aleutian disease virus. Liver injury was assessed histologically. The mink liver demonstrated inflammation of liver parenchyma and foci of fatty liver. In immunohistochemistry, during liver regeneration the matrix metalloproteinases MMP-9, vascular endothelial growth factor and β-defensin 2 expressions were lower, but MMP-2 and nerve growth factor receptor p75 expression was increased.
Źródło:
Polish Journal of Veterinary Sciences; 2011, 14, 1
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution and amount of cathepsin B in gentamicin-induced acute kidney injury in rats
Autorzy:
Svara, T
Pogacnik, M.
Juntes, P.
Powiązania:
https://bibliotekanauki.pl/articles/30766.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
rat
kidney
cathepsin B
gentamicin
distribution
immunohistochemistry
vacuolar degeneration
histopathology
statistical method
Opis:
The aim of our study was to investigate how the distribution and amount of cathepsin B change during acute kidney injury. The research was done on a rat model of acute kidney injury that was induced by nephrotoxic antibiotic gentamicin. Gentamicin was injected at a dose of 40 mg/kg body weight (the first treated group) and 80 mg/kg body weight (the second treated group) for 14 days. Control groups received injections of physiological saline only. One day after the last injection, animals were euthanized, dissected and kidney samples were taken and fixed in 10% buffered formalin. Tissue sections were stained with haematoxylin and eosin, periodic Acid Schiff (PAS) and Oil-red-O. Immunohistochemistry was used for the demonstration of cathepsin B. Vacuolar degeneration of the proximal convoluted tubules was the most prominent pathologic lesion found in the first treated group, while necrosis prevailed in the second treated group in the same localisation. In both treated groups significantly weaker immunohistochemical reaction for cathepsin B was noticed in the proximal convoluted tubules in comparison to the control groups (P < 0.05). The decrease of positive reaction was the largest in the proximal convoluted tubules of the outer renal cortex. Stronger positive reaction for cathepsin B, although not statistically significant, was found in the proximal straight tubules (P > 0.05), as well. However, more numerous cathepsin B-positive large granules appeared in the proximal straight tubules of the second treated group then in the second control group (P < 0.05). We can conclude that the amount of cathepsin B in the affected proximal convoluted tubules significantly decreases along the increased severity of the histopathological lesions of the proximal convoluted tubuls, the amount of enzyme in the well preserved proximal straight tubules increases and more cathepsin B-positive large granules appear in the cytoplasm.
Źródło:
Polish Journal of Veterinary Sciences; 2010, 13, 1; 75-82
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immunohistochemical study of expression of immunoglobulins in canine B-cell lymphomas
Autorzy:
Sokolowska, J.
Micun, J.
Zabielska, K.
Malicka, E.
Lechowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/31685.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
immunohistochemistry
expression
immunoglobulin
dog
B cell
lymphoma
tumour
neoplastic cell
immunoglobulin light chain
cancer
Opis:
Nineteen canine lymphomas were included in this study. Tumors were classified according to the updated Kiel classification adapted for canine lymphomas by Fournel-Fleury et al. Immunoglobulin light chains (κ and λ) and IgM and IgG expression were determined by immunohistochemical method. In all examined cases neoplastic cells were positive for one of the immunoglobulin light chains. Expression of λ light chains and κ light chains was observed in 18/19 and 1/19 tumors, respectively. In the majority of neoplastic cells in each examined specimen this reaction had a membranous pattern (sκ/sλ). In all examined cases the presence of immunoglobulin light chains was also observed in the cytoplasm of some neoplastic cells (cκ/cλ). These cells were usally rare and never constituted a dominant population. The expression of immunoglobulin was found in 13/19 cases. Most lymphomas were sIgM positive (11/13 cases). In one case expression of IgG was found, and in another lymphoma two populations of neoplastic cells with different expression of examined immunoglobulins (cells with IgM+ and IgG+ phenotypes) were observed. The reaction also had a membranous pattern. The cells containing cytoplasmic immunoglobulins were rare, and in most cases were of the same type as the surface immunoglobulins. Our study has confirmed that canine lymphomas are a monoclonal proliferation of B-cells usually expressing immunoglobulin λ light chains and that the vast majority of tumors deriving from B-cells express IgM. Our study also indicates a possibility of occurence of biclonal lymphomas in canine species.
Źródło:
Polish Journal of Veterinary Sciences; 2010, 13, 4
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dispersal and immunohistochemical characteristics of neurons in the stem of the porcine vagus nerve
Autorzy:
Sienkiewicz, W.
Klimczuk, M.
Majewska, M.
Kaleczyc, J.
Powiązania:
https://bibliotekanauki.pl/articles/16647386.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
vagus nerve
intravagal neurons
neurotransmitter markers
immunohistochemistry
pig
Opis:
The present study investigated the distribution and chemical properties of nerve cell bodies within the trunk of the vagus nerve in juvenile female pigs (n=4) using double-labelling immunofluorescence. The neurons appeared mostly as single cells or formed streaks of cells or small ganglia. Many of the perikarya were cholinergic (VAChT-positive; VAChT+) or adrenergic (DβH+) in nature and no SP+ or CGRP+ neurons were encountered. There were no distinct left-right differences regarding the number and chemical coding of the neuronal somata, however, these characteristics significantly varied between particular nerve segments investigated. The vagosympathetic trunks, and thoracic and abdominal segments of the vagus nerve contained on average (the numerical values represent the means for both the left and right corresponding nerve segments) 142, 236, and 111 PGP 9.5-positive neurons, respectively. Proportions of cholinergic and adrenergic neurons were as follows: 0% and 100%, 54.2% and 33.2%, and 52.8% and 35.4%, respectively. Relatively many neurons in the thoracic and abdominal segments stained also for NOS (39.2% and 39.9%, respectively). It remains to be determined whether the porcine intravagal neurons represent a developmental relic, or whether they have any specific functional significance.
Źródło:
Polish Journal of Veterinary Sciences; 2022, 25, 4; 617-619
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immunohistochemical characterization of nerve elements in porcine intrinsic laryngeal ganglia
Autorzy:
Sienkiewicz, W.
Klimczuk, M.
Gulbinowicz-Gowkielewicz, M.
Lepiarczyk, E.
Kaleczyc, J.
Powiązania:
https://bibliotekanauki.pl/articles/16539221.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
larynx
intrinsic neurons
pig
immunohistochemistry
biologically active substances
Opis:
The present study investigated the chemical coding of neurons and nerve fibres in local laryngeal ganglia in pigs (n=5) using double-labelling immunohistochemistry. Virtually all the neurons were cholinergic in nature (ChAT- or VAChT-positive). Only very solitary, small nerve cells (presumably representing interneurons) stained intensely for adrenergic marker, DβH. Many neurons also contained immunoreactivity for NOS (91%), VIP (62.7%), NPY (24.7%), galanin (10%), SP (1.3%) and CGRP (5.3%). No neurons expressing somatostatin or Leu-enkephalin were observed. Nearly all the neuronal somata were densely supplied with varicose cholinergic nerve terminals, which presumably represented preganglionic axons, and some of them were also closely apposed with CGRP- and/or SP-positive varicose nerve endings, which were putative collaterals of extrinsic primary sensory fibres. In conclusion, this study has revealed that intrinsic neurons in the porcine larynx, like in many other mammalian species studied, should be classified as parasympathetic cholinergic neurons expressing biologically active substances, predominantly NOS and VIP. Furthermore, they are likely to receive inputs from not only preganglionic neurons but also primary sensory nerve cells. Finally, it appears that the information on the occurrence of the local laryngeal ganglia should be regularly included in textbooks dealing with the cranial portion of the parasympathetic nervous system in mammals.
Źródło:
Polish Journal of Veterinary Sciences; 2022, 25, 2; 325-334
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enteric neuronal development in canine small intestine – an immunohistochemical study
Autorzy:
Serzysko, T.
Skwarek, A.
Chudziak, E.
Malina, M.
Kaleczyc, J.
Sienkiewicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/2087175.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
dog
fetus
small intestine
enteric nervous system
development
neurons
immunohistochemistry
Źródło:
Polish Journal of Veterinary Sciences; 2021, 24, 2; 293-301
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nesfatin-1 prevents negative changes in bone in conditions of developing osteopenia
Autorzy:
Puzio, I.
Tymicki, G.
Pawłowska, M.
Bieńko, M.
Radzki, R.P.
Powiązania:
https://bibliotekanauki.pl/articles/2085429.pdf
Data publikacji:
2020
Wydawca:
Instytut Medycyny Wsi
Tematy:
nesfatin-1
osteopenia
osteoporosis
ovariectomy
rat
DXA
pQCT
immunohistochemistry
Opis:
Objective. The aim of the study was to determine the effect of nesfatin-1 on bone properties in female rats in the conditions of developing osteopenia induced by ovariectomy (OVX). Materials and method. The experiment was performed on 21 female Wistar rats assigned to 3 groups receiving intraperitoneally physiological saline (SHO, OVX-PhS) and nesfatin-1 in dose 2 μg/kg BW of (OVX-NES) once a day for 8 wks. At the end of the experiment, the rats were scanned using the DXA method to determine the body composition, tBMC, and tBMD. The isolated femora and tibia were tested with the DXA method for BMD and BMC, and with the pQCT method for separate analysis of the cortical and trabecular bone tissue. The bone strength parameters were also determined. The immunohistochemical method was used for determination of nesfatin-1 localization in growth cartilage. Bone metabolism markers (osteocalcin, bALP, and NTx) were identified using an ELISA kit. Results. OVX exerts a negative effect on bone tissue. The nesfatin-1 administration influenced positively the DXA parameters of tibia. TvBMD and TbvBMD measured by pQCT in metaphysis of bones were significantly higher in the OVX-NES group than in OVX-PhS. No differences were found in the values of bone strength parameters between SHO and OVX-NES females. Extra- and intracellular immunohistochemical reaction for nesfatin-1 was observed in all zones of growth cartilage, with the strongest reaction detected in the calcifying zone. Nesfatin-1 administration caused a significant increase in the osteocalcin and bALP concentration in relation to the OVX-PhS animals. Conclusion. The results of the experiment indicate that nesfatin-1 exerts a protective effect on bone tissue properties and can be used in the prevention of osteoporosis.
Źródło:
Annals of Agricultural and Environmental Medicine; 2020, 27, 1; 66-75
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Image analysis of immunohistochemical stains for detection of parathyroid disease
Autorzy:
Płaczek, B.
Orczyk, T.
Bułdak, R.
Michalski, M.
Segiet, O.
Polaniak, R.
Powiązania:
https://bibliotekanauki.pl/articles/333291.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
image processing
immunohistochemistry
hyperparathyroidism
light microscopy
przetwarzanie obrazu
immunohistochemia
nadczynność przytarczyc
mikroskopia świetlna
Opis:
In this paper a method is introduced which enables automatic detection of parathyroid hyperplasia and parathyroid adenoma on the basis of immunohistochemical angiogenesis markers expression in micrographs. The proposed method uses digital image processing techniques and classification algorithms to detect diseased tissue. The disease detection is performed by classification of normalized color intensity histograms. Accuracy of this method was evaluated by using micrographs of parathyroid tissue sections obtained from patients that have undertaken surgery due to primary hyperparathyroidism. Use of different color models, various classifiers, and immunohistochemical markers was considered during the experiments. The experimental results show that the introduced method enables accurate detection of parathyroid disease. The most promising results were obtained for k-nearest neighbor and neural network classifiers.
Źródło:
Journal of Medical Informatics & Technologies; 2015, 24; 141-146
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative studies on bone structure in dairy cows with different feeding conditions
Autorzy:
Pilmane, M
Zitare, I.
Jemeljanovs, A.
Powiązania:
https://bibliotekanauki.pl/articles/30482.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
dairy cattle
cow
animal feeding
bone structure
feeding condition
histomorphometry
immunohistochemistry
bone
diet
rapeseed
dynamic structure
feed component
Opis:
The bone belongs to the dynamic tissues and its structure in domestic cows is still not completely understood in correlation to the impact of different food components. The aim of our work was a histomorphometrical and immunohistochemical research on bone morphology and factors influencing it in healthy dairy cows fed with self-produced grain and with rapeseed cakes. The bone of self-produced grain-fed cows demonstrated statistically significant difference in the number of osteocytes from the bone of rapeseed cakes-fed cows. The rapeseed cakes-fed cows didn't show any bone cell positive for BMP2/4, while FGFR1 increased significantly in their supportive tissues. The number of bFGF- and apoptosis-containing structures varied in cows of both groups. MMP2 expression showed statistically significant difference between both animals' groups with domination in bone of cows fed with self-produced grain. Defensin-, osteopontin- and osteocalcin-contain- ing cells showed tendency to increase in bone of cows on rapeseed cakes diet. Conclusions. The rapeseed-fed cow's long bones demonstrate significant decrease of osteocytes per mm2 and selective increase of FGFR1, suggesting the (compensatory) growth stimulation in supportive tissue. The statistically significant selective absence of MMP2 with a slight tendency of increase in osteopontin and osteocalcin in rapeseed-fed cow's long bones indicates the persistence of seemingly still compensated qualitative changes in bone (beginning of disturbances in mineralization, metabolism etc.) proved also by a slight increase of the bone antimicrobial peptide.
Źródło:
Polish Journal of Veterinary Sciences; 2010, 13, 1; 89-95
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metastatic and non-metastatic sentinel inguinofemoral lymph nodes in vulvar cancer show an increased lymphangiogenesis
Autorzy:
Piechowicz, M.
Mikos, M.
Banas, T.
Okon, K.
Pietrus, M.
Balajewicz-Nowak, M.
Szczudlik, L.
Kojs, Z.
Czerw, A.
Juszczyk, G.
Pityński, K.
Powiązania:
https://bibliotekanauki.pl/articles/2085422.pdf
Data publikacji:
2020
Wydawca:
Instytut Medycyny Wsi
Tematy:
anti-D2–40 antibody
lymphatic vessel density
immunohistochemistry
sentinel lymph node
vulvar cancer
Opis:
Introduction and objective. Lymph node involvement is a strong predictor of disease recurrence and patient survival in vulvar cancer. The aim of the study was to evaluate the feasibility of sentinel lymph node (SLN) screening, the incidence of skip metastases, and lymph node lymphangiogenesis. Materials and method. Fifty-five patients participated in this prospective, single centre study. A double SLN screening method was employed using radiocolloid (technetium-99 sulfur colloid) and 1.0% Isosulfan Blue. Immunohistochemistry, using a mouse monoclonal antibody against D2–40, was used to evaluate lymphatic vessel density (LVD). All calculations were performed using STATISTICA software v. 10 (StatSoft, USA, 2011); p<0.05 was considered significant. Results. Using both methods of SLN detection, 100% accuracy was achieved, and skip metastases were diagnosed in only one woman (1.82%). Peri-tumour median LVD was significantly increased compared with matched intra-tumour samples (p<0.001), while median LVD was significantly lower in negative, compared with positive SLN, regardless of whether matched non-SLN were negative (p<0.001) or positive (p=0.005). Metastatic SLN exhibited significantly higher median LVD compared with matched negative non-SLN (p=0.015), while no significant difference in median LVD was detected between positive SLN and matched positive non-SLN. However, negative SLN had a significantly higher median LVD compared with matched negative non-SLN (p = 0.012). Conclusions. SLN detection is a safe and feasible procedure in vulvar cancer. In patients without nodular involvement, SLN, compared with non-SLN, exhibited significantly higher median LVD, which may be an indication of its preparation to host metastases, and thus requires further investigation.
Źródło:
Annals of Agricultural and Environmental Medicine; 2020, 27, 1; 123-128
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies