scholarly journals Investigation of Chromosome 1 Aberrations in the Lymphocytes of Prostate Cancer and Benign Prostatic Hyperplasia Patients by Fluorescence in situ Hybridization

2021 ◽  
Vol Volume 13 ◽  
pp. 4291-4298
Author(s):  
Justyna Miszczyk ◽  
Mikołaj Przydacz ◽  
Michał Zembrzuski ◽  
Piotr L Chłosta
Keyword(s):  
Prostate Cancer ◽  
In Situ Hybridization ◽  
Benign Prostatic Hyperplasia ◽  
Fluorescence In Situ Hybridization ◽  
Prostatic Hyperplasia ◽  
Chromosome 1

scholarly journals Zone-Dependent Expression of Estrogen Receptors α and β in Human Benign Prostatic Hyperplasia

2003 ◽  
Vol 88 (3) ◽  
pp. 1333-1340 ◽  
Author(s):  
Toshifumi Tsurusaki ◽  
Daiyu Aoki ◽  
Hiroshi Kanetake ◽  
Satoshi Inoue ◽  
Masami Muramatsu ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
In Situ Hybridization ◽  
Benign Prostatic Hyperplasia ◽  
Estrogen Receptors ◽  
Stromal Cells ◽  
Crucial Role ◽  
Peripheral Zone ◽  
Prostatic Hyperplasia ◽  
Cellular Distribution

Estrogen, which acts through estrogen receptors (ERs) α and β, has been implicated in the pathogenesis of benign and malignant human prostatic tumors, i.e. benign prostatic hyperplasia and prostate cancer, thought to originate from different zones of the prostate [the transition zone (TZ) and peripheral zone (PZ), respectively]. Here, we examined the cellular distribution of ERα and ERβ in human normal and hyperplastic prostate tissues, using in situ hybridization and immunohistochemistry. ERα expression was restricted to stromal cells of PZ. In contrast, ERβ was expressed in the stromal cells of PZ as well as TZ. ERβ-positive epithelial cells were evenly distributed in PZ and TZ of the prostate. Our results suggest that estrogen may play a crucial role in the pathogenesis of benign prostatic hyperplasia through ERβ.

scholarly journals Fluorescence in situ hybridization in diluted and flow cytometrically sorted boar spermatozoa using specific DNA direct probes labelled by nick translation

Reproduction ◽  
2003 ◽  
pp. 317-325 ◽  
Author(s):  
I Parrilla ◽  
JM Vazquez ◽  
M Oliver-Bonet ◽  
J Navarro ◽  
J Yelamos ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Fluorescence In Situ Hybridization ◽  
Y Chromosome ◽  
Internal Control ◽  
Dna Probes ◽  
Chromosome 1 ◽  
Nick Translation ◽  
Fluorescent Signal ◽  
Sperm Separation

Successful evaluation of X- and Y-chromosome-bearing sperm separation technology using flow cytometry-cell sorter is of great importance. Fluorescence in situ hybridization (FISH), which allows for the detection of specific nucleic acid sequences on morphologically preserved spermatozoa, is an ideal method for quantitatively and qualitatively assessing the purity of sorted sperm samples. In this study specific pig DNA direct probes for small regions of chromosomes 1 and Y were used. Chromosome 1 was labelled in green and used as internal control to detect a lack of hybridization, whereas chromosome Y was labelled in red. Nick translation was used as the labelling method for the preparation of these probes. Spermatozoa, unsorted and sorted for high and low Y-chromosome purity from ejaculates of five boars, were fixed on slides and two-colour direct FISH was performed for chromosomes 1 and Y. About 500 non-sorted and 200 sorted spermatozoa per sample were scored. The proportion of Y-chromosome-bearing spermatozoa was determined by the presence of a red fluorescent signal on the sperm head and the proportion of X-chromosome-bearing spermatozoa was determined by subtraction. The efficiency of the hybridization procedure was established as near 98% on sorted and unsorted samples. The results of this study confirm that direct FISH using specific pig DNA probes labelled by nick translation provides a useful tool for laboratory validation of sperm separation by flow sorting technology. Moreover, the ease of nick translation and the quality of the fluorescent signal obtained using this method makes this procedure the most appropriate method for labelling pig DNA probes to be used for direct FISH on pig spermatozoa.

An evaluation of a new series of fluorescent dUTPs for fluorescence in situ hybridization.

1996 ◽  
Vol 44 (5) ◽  
pp. 525-529 ◽  
Author(s):  
J Wiegant ◽  
N Verwoerd ◽  
S Mascheretti ◽  
M Bolk ◽  
H J Tanke ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Fluorescence In Situ Hybridization ◽  
Human Lymphocytes ◽  
Single Copy ◽  
Cyanine Dye ◽  
Chromosome 1 ◽  
Nick Translation ◽  
Qualitative Comparison ◽  
Copy Dna

Synthesis of fluorochrome-modified deoxyribonucleotides has been carried out mostly by linking the fluorochrome molecule to the C-5 position of dUTP via an allylamine spacer, similar to the modification of allylamine-dUTP with the haptens biotin and digoxigenin. Recently, a new series of fluorescent nucleotides has been prepared by using an alkynyl bridge between the uracil moiety and the fluorochrome. Here we report the qualitative and quantitative analysis of fluorescence in situ hybridization results obtained on interphase cells and chromosomes with a variety of highly repetitive and single-copy DNA probes that were modified by nick translation with such alkynyl dUTPs. A qualitative comparison was made of the alkynyl dUTPs conjugated to the fluorochromes fluorescein, the cyanine dye Cy3, tetramethylrhodamine, Lissamine and Texas Red. With the exception of tetramethylrhodamine, all fluorochromes performed satisfactorily. The cyanine dye Cy3 provided the highest sensitivity, i.e., cosmid and YAC probes could easily be visualized by conventional fluorescence microscopy. In a quantitative assay, different nick translation conditions were tested using a human chromosome 1 satellite III probe (pUC1.77) and alkynyl dUTPs labeled with fluorescein and Cy3. Using these two nucleotides, FISH signal intensities on interphase nuclei from human lymphocytes were quantitated by digital imaging microscopy. The strongest signals were obtained when during nick translation the ratio between dTTP and fluorescein-dUTP or Cy3-dUTP was 1:5.

Detection of chromosomal anomalies in uterine endometrial carcinoma using fluorescence in situ hybridization (UteroFISH)

2009 ◽  
Vol 27 (15_suppl) ◽  
pp. 5533-5533
Author(s):  
J. Qian ◽  
D. Weber ◽  
R. Cochran ◽  
D. Hossain ◽  
D. G. Bostwick
Keyword(s):  
In Situ Hybridization ◽  
Fluorescence In Situ Hybridization ◽  
Endometrial Carcinoma ◽  
Endometrial Adenocarcinoma ◽  
Atypical Hyperplasia ◽  
Chromosome 1 ◽  
Chromosomal Anomalies ◽  
Tissue Samples ◽  
Gynecological Malignancy

5533 Background: Endometrial cancer is the most common pelvic gynecological malignancy. The diagnosis of well-differentiated endometrial adenocarcinoma, atypical hyperplasia, and marked hyperplasia is often challenging. We sought to investigate the utility of chromosomal anomalies for the detection of uterine endometrial carcinoma using multitarget fluorescence in situ hybridization (FISH). Methods: Samples were collected by endometrial brush and processed by liquid-based thin-layer cytological preparation protocol. For study, we collected cytology slides from consecutive cases to include 50 benign, 50 hyperplasia without atypia, 50 atypical hyperplasia, and 50 endometrial cancers. Each was hybridized using fluorescence labeled DNA probes to chromosomes 1, 8, and 10 (UteroFISH). The FISH signals were enumerated in 100 cells per case, and the chromosomal anomalies were correlated with pathologic findings, including histologic diagnoses on endometrial tissue samples. Results: Numeric chromosomal anomalies were found in 0% (0/50) of benign, 20% (10/50) of hyperplasia, 76% of atypical hyperplasia (38/50), and 86% (43/50) of carcinoma specimens. The mean percentage of cells with chromosomal changes was 54% in cancer specimens, significantly higher than that in hyperplasia without atypia (13%, p< 0.0001) and atypical hyperplasia (34%, p< 0.0001). The most frequent chromosomal anomaly was gain of chromosome 1. FISH anomalies had an overall sensitivity of 81% and specificity of 90% for the detection of atypical hyperplasia and/or endometrial carcinoma. There was no association with grade of endometrial carcinoma. Conclusions: Multi-target UteroFISH appeared to be useful for the differential diagnosis of reactive hyperplasia, atypical hyperplasia, and endometrial adenocarcinoma, with a high level of sensitivity and specificity. Endometrial hyperplasia with FISH-detected chromosomal anomalies may require close clinical follow-up. No significant financial relationships to disclose.

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