Formalin fixing and paraffin embedding, sectioning and H&E staining of tissue specimens _St. Jude Children's Research Hospital v1

protocols.io ◽  
2021 ◽  
Author(s):  
Charlene Henry ◽  
Raven M Holcombe ◽  
Brent Orr
Keyword(s):  
Research Hospital ◽  
Paraffin Embedding ◽  
Tissue Specimens

Ultrastructural Studies on Genital Infection with the Chlamydial Agent of Guinea Pig Inclusion Conjunctivitis

1977 ◽  
Vol 35 ◽  
pp. 352-353
Author(s):  
B. L. Soloff ◽  
A. L. Barron ◽  
H. J. White ◽  
R. G. Rank
Keyword(s):  
Guinea Pig ◽  
Sexual Contact ◽  
Chlamydia Psittaci ◽  
Genital Infection ◽  
Major Site ◽  
Ultrastructural Studies ◽  
Tissue Specimens ◽  
Guinea Pig Model ◽  
Adequate Tissue ◽  
Genital Tissue

Chlamydial organisms (specifically C. trachomatis) have been implicated as a frequent cause of genital infection in the human (1). Study of the histo- pathological aspects of such infections has been impeded because of difficulties in obtaining adequate tissue specimens and the lack of a suitable experimental host. In 1964, Murray (2) isolated the causative agent of guinea pig inclusion conjunctivitis which possesses similarities to human inclusion conjunctivitis. This guinea pig organism was found to be a member of the Chlamydia psittaci subgroup and was designated as the Gp-ic agent. Male guinea pigs have been successfully infected with Gp-ic by intraurethral inoculation. Transmission of the infection to the female by sexual contact has been demonstrated (3). We are not aware of any ultrastructural studies to date concerning the development of this agent in genital tissue.Studies in our laboratory have established that, in our guinea pig model, the cervix is the major site of injection.

Electron Microscopic Examination of a Transplantable Rat Mammary Carcinoma

1968 ◽  
Vol 26 ◽  
pp. 20-21
Author(s):  
S. Shirahama ◽  
G. C. Engle ◽  
R. M. Dutcher
Keyword(s):  
Electron Microscope ◽  
Osmium Tetroxide ◽  
Electron Microscopic Examination ◽  
Undifferentiated Carcinoma ◽  
Uranyl Acetate ◽  
Sprague Dawley ◽  
Electron Microscopic ◽  
North West ◽  
X Irradiation ◽  
Tissue Specimens

A transplantable carcinoma was established in North West Sprague Dawley (NWSD) rats by use of X-irradiation by Engle and Spencer. The tumor was passaged through 63 generations over a period of 32 months. The original tumor, an adenocarcinoma, changed into an undifferentiated carcinoma following the 19th transplant. The tumor grew well in NWSD rats of either sex at various ages. It was invariably fatal, causing death of the host within 15 to 35 days following transplantation.Tumor, thymus, spleen, and plasma from 7 rats receiving transplants of tumor at 3 to 9 weeks of age were examined with an electron microscope at intervals of 8, 15, 22 and 30 days after transplantation. Four normal control rats of the same age were also examined. The tissues were fixed in glutaraldehyde, postfixed in osmium tetroxide and embedded in Epon. The plasma was separated from heparanized blood and processed as previously described for the tissue specimens. Sections were stained with uranyl acetate followed by lead citrate and examined with an RCA EMU-3G electron microscope.

İŞE BAĞLILIĞIN TÜKENMİŞLİK VE DEPRESYON DÜZEYLERİ ÜZERİNDEKİ ETKİLERİ: SAĞLIK ÇALIŞANLARI ÜZERİNDE BİR ARAŞTIRMA

2014 ◽  
Vol 1 (2) ◽  
pp. 206
Author(s):  
Haluk TANRIVERDİ ◽  
Mucize SARIHAN
Keyword(s):  
Regression Analysis ◽  
Correlation Analysis ◽  
Health Workers ◽  
Personal Information ◽  
Depression Scale ◽  
Work Commitment ◽  
Statistical Software ◽  
Research Hospital ◽  
Training And Research

The main purpose of this study is to examine the effects of health workers’ levels of work commitment on the levels of depression and burnout.  Having this purpose in mind, a questionnaire consisting of personal information form, work commitment scale, burnout scale and depression scale was conducted with 266 health workers of İstanbul Kartal Training and Research Hospital in May 2013. Data obtained from questionnaires were analyzed by SPSS 17,0 statistical software. Correlation analysis was utilized in order to determine the relationships among work commitment, burnout and depression levels of health workers whereas regression analysis was utilized in order to determine the effects of health workers’ levels of work commitment on the levels of depression and burnout. According to the results, it has been found that there are statistically relevant relationships among work commitment, burnout and depression levels of health workers. It has been concluded that the more health workers’ levels of work commitment increase, their levels of depression and burnout decrease.

The Importance of AGR2 Expression in Pituitary Adenoma Tissue Specimens on Tumor Aggressivity

2019 ◽  
Author(s):  
Sema Ciftci Dogansen ◽  
Omur Gunaldi ◽  
Ayla Solmaz Avcikurt ◽  
Baris Colluoglu ◽  
Ilhan Yilmaz ◽  
...  
Keyword(s):  
Pituitary Adenoma ◽  
Adenoma Tissue ◽  
Tissue Specimens

scholarly journals Protein Kinase A Distribution in Meningioma

Cancers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1686 ◽  
Author(s):  
Caretta ◽  
Denaro ◽  
D’Avella ◽  
Mucignat-Caretta
Keyword(s):  
Brain Tissue ◽  
Catalytic Subunit ◽  
Therapeutic Interventions ◽  
Normal Brain ◽  
Local Concentration ◽  
Correlation Pattern ◽  
Catalytic Subunits ◽  
Tissue Specimens ◽  
Pka Catalytic Subunit

Deregulation of intracellular signal transduction pathways is a hallmark of cancer cells, clearly differentiating them from healthy cells. Differential intracellular distribution of the cAMP-dependent protein kinases (PKA) was previously detected in cell cultures and in vivo in glioblastoma and medulloblastoma. Our goal is to extend this observation to meningioma, to explore possible differences among tumors of different origins and prospective outcomes. The distribution of regulatory and catalytic subunits of PKA has been examined in tissue specimens obtained during surgery from meningioma patients. PKA RI subunit appeared more evenly distributed throughout the cytoplasm, but it was clearly detectable only in some tumors. RII was present in discrete spots, presumably at high local concentration; these aggregates could also be visualized under equilibrium binding conditions with fluorescent 8-substituted cAMP analogues, at variance with normal brain tissue and other brain tumors. The PKA catalytic subunit showed exactly overlapping pattern to RII and in fixed sections could be visualized by fluorescent cAMP analogues. Gene expression analysis showed that the PKA catalytic subunit revealed a significant correlation pattern with genes involved in meningioma. Hence, meningioma patients show a distinctive distribution pattern of PKA regulatory and catalytic subunits, different from glioblastoma, medulloblastoma, and healthy brain tissue. These observations raise the possibility of exploiting the PKA intracellular pathway as a diagnostic tool and possible therapeutic interventions.

Platelet distribution width in young patients with chronic venous insufficiency

Vascular ◽  
2021 ◽  
pp. 170853812110296
Author(s):  
Mustafa Aldemir ◽  
Ahmet Yuksel ◽  
Mehmet Inanir ◽  
Salih Metin ◽  
Yusuf Velioglu ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Clinical Features ◽  
Chronic Venous Insufficiency ◽  
Venous Insufficiency ◽  
Young Patients ◽  
Control Group ◽  
Platelet Distribution Width ◽  
Distribution Width ◽  
Research Hospital ◽  
Lymphocyte Ratio

Objective Platelet distribution width (PDW) has been reported in a wide range of pathological settings. In this study, we aimed to investigate the relationship between PDW and lower extremity chronic venous insufficiency (CVI) by comparing the levels of PDW and other parameters derived from complete blood count (CBC) tests in young individuals with or without lower extremity CVI. Methods This prospective clinical study was conducted between January 2020 and December 2020. A total of 108 patients, 72 patients with lower extremity CVI (study group) and 36 healthy volunteers (control group) were enrolled from the Bursa Yuksek Ihtısas Educatıon Research Hospıtal and the Bolu Abant Izzet Baysal University Training and Research Hospital. The age range of the participants was between 18 and 50 years old. Participants’ baseline clinical features and CBC parameters including PDW, white blood cell, hemoglobin, hematocrit, mean corpuscular volume, red cell distribution width, neutrophil, lymphocyte, platelet count, mean platelet volume, plateletcrit, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratio were compared between the two groups. Results The groups were statistically similar in terms of baseline clinical features. The median PDW value was significantly higher for the CVI patients relative to the control group (17.6 vs 16.8; p < 0.001). In terms of other CBC parameters, there were no significant differences between the groups. According to ROC analysis, area under the curve of PDW was 0.749 (95% confidence interval: 0.653–0.846 and p < 0.001). If the value of PDW was accepted as 17, it could predict CVI with 76% sensitivity and 59% specificity, whereas a PDW value of 17.5 could predict CVI with 51% sensitivity and 81% specificity. Conclusion Platelet distribution width might be a useful marker to determine an increased inflammatory response and thrombotic status in young patients with CVI.

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