Deoxycytidylate Deaminase and Deoxycytidine Deaminase in Normal and Neoplastic Human Tissues

1970 ◽  
Vol 11 (4) ◽  
pp. 375-383 ◽  
Author(s):  
G. Giusti ◽  
C. Mangoni ◽  
B. de Petrocellis ◽  
E. Scarano
Keyword(s):  
Human Tissues ◽  
Deoxycytidine Deaminase

Microstructural comparison of synthetic bioceramics with natural bioceramics

1991 ◽  
Vol 49 ◽  
pp. 38-39
Author(s):  
Shulin Wen ◽  
Jingwei Feng ◽  
A. Krajewski ◽  
A. Ravaglioli
Keyword(s):  
Recent Work ◽  
Human Body ◽  
Human Tissues ◽  
Main Constituent ◽  
Laboratory Furnace ◽  
Chinese Adult ◽  
Human Enamel ◽  
Biological Compatibility ◽  
Synthetic Hydroxyapatite ◽  
Synthetic Work

Hydroxyapatite bioceramics has attracted many material scientists as it is the main constituent of the bone and the teeth in human body. The synthesis of the bioceramics has been performed for years. Nowadays, the synthetic work is not only focused on the hydroapatite but also on the fluorapatite and chlorapatite bioceramics since later materials have also biological compatibility with human tissues; and they may also be very promising for clinic purpose. However, in comparison of the synthetic bioceramics with natural one on microstructure, a great differences were observed according to our previous results. We have investigated these differences further in this work since they are very important to appraise the synthetic bioceramics for their clinic application.The synthetic hydroxyapatite and chlorapatite were prepared according to A. Krajewski and A. Ravaglioli and their recent work. The briquettes from different hydroxyapatite or chlorapatite powders were fired in a laboratory furnace at the temperature of 900-1300°C. The samples of human enamel selected for the comparison with synthetic bioceramics were from Chinese adult teeth.

Immunoelectron microscopic localization of elastic tissue in archival material using an improved method

1990 ◽  
Vol 48 (3) ◽  
pp. 794-795
Author(s):  
J. C. Fanning ◽  
J. F. White ◽  
R. Polewski ◽  
E. G. Cleary
Keyword(s):  
Normal Animal ◽  
Animal Tissue ◽  
Elastic Tissue ◽  
Human Tissues ◽  
Improved Method ◽  
Tissue Samples ◽  
Archival Material ◽  
Immuno Electron Microscopy ◽  
Arteries And Veins ◽  
Biochemical Examination

Elastic tissue is an important component of the walls of arteries and veins, of skin, of the lungs and in lesser amounts, of many other tissues. It is responsible for the rubber-like properties of the arteries and for the normal texture of young skin. It undergoes changes in a number of important diseases such as atherosclerosis and emphysema and on exposure of skin to sunlight.We have recently described methods for the localizationof elastic tissue components in normal animal and human tissues. In the study of developing and diseased tissues it is often not possible to obtain samples which have been optimally prepared for immuno-electron microscopy. Sometimes there is also a need to examine retrospectively samples collected some years previously. We have therefore developed modifications to our published methods to allow examination of human and animal tissue samples obtained at surgery or during post mortem which have subsequently been: 1. stored frozen at -35° or -70°C for biochemical examination; 2.

Characterization of the lipid droplet-associated protein MLDP in human tissues and in hepatocyte steatosis

2010 ◽  
Vol 48 (01) ◽  
Author(s):  
M Hashani ◽  
M koenig ◽  
LM Pawella ◽  
P Schirmacher ◽  
BK Straub
Keyword(s):  
Lipid Droplet ◽  
Human Tissues ◽  
Hepatocyte Steatosis

COVID 19 – Eye Issues

2020 ◽  
Vol 5 (Special) ◽  
Keyword(s):  
Host Cell ◽  
Target Cell ◽  
Cell Receptor ◽  
Human Tissues ◽  
Type Ii ◽  
Cell Infection ◽  
Host Cell Receptor ◽  
Infected Cells ◽  
Cellular Entry

The coronavirus illness (COVID-19) is caused by a new recombinant SARS-CoV (SARS-CoV) virus (SARS-CoV-2). Target cell infection by SARS-CoV is mediated by the prickly protein of the coronavirus and host cell receptor, enzyme 2 converting angiotensin (ACE2) [3]. Similarly, a recent study suggests that cellular entry by SARS-CoV-2 is dependent on both ACE2 as well as type II transmembrane axial protease (TMPRSS2) [4]. This means that detection of ACE2 and PRSS2 expression in human tissues can predict potential infected cells and their respective effects in COVID-19 patients [1].

Using Biomedical Ethics Model to Explore Use of Postmortem Specimens in Tissue Research

2016 ◽  
Vol 3 (1) ◽  
pp. 234-237
Author(s):  
Stacy A. Drake ◽  
Erica T. Yu
Keyword(s):  
Ethical Issues ◽  
Biomedical Ethics ◽  
Human Tissues ◽  
Next Of Kin ◽  
Policy Makers ◽  
Institutional Review ◽  
Tissue Procurement ◽  
Tissue Research ◽  
Death Investigation ◽  
Medicolegal Death Investigation

Researchers often have a need to conduct human tissue research using postmortem specimens. Medicolegal death investigation organizations are untapped areas for obtaining postmortem human tissues. Because death investigation organizations are not required by law to conduct or support research, an ethical dilemma exists in whether or not researchers should use cadaver tissues for research purposes. This paper analyzes the ethical issues of using human tissues through discussion of principles of biomedical ethics, respect for autonomy, nonmaleficence, beneficence, and justice. Policy makers, organ and tissue procurement organizations, medicolegal death investigation organizations, and scientists should be aware of these principles when considering researchers requests. The authors conclude that with Institutional Review Board approval and next of kin consent, there are prevailing reasons for using postmortem tissue for research.

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