scholarly journals Placental Structure and Biological Aspects of Fetal Membranes Cultured in vitro

10.5772/51284 ◽  
2012 ◽  
Author(s):  
Joao Bosco Barreto Filho ◽  
Maira Souza
Keyword(s):  
Fetal Membranes ◽  
Biological Aspects ◽  
Placental Structure

In vitro Influence of Steroids, Histamine, Adrenaline and Oxytocin on Secretion of Prostaglandins PGE(2) and PGF(2α) by Human Fetal Membranes

1984 ◽  
Vol 7 (S1) ◽  
pp. 67-71 ◽  
Author(s):  
G.M. Acker ◽  
A. Pesty ◽  
A. Bianchi ◽  
J.E. Chasseray ◽  
E. Papiernik
Keyword(s):  
Fetal Membranes

scholarly journals Phenotypic aspects of oral strains of Candida albicans in children with down's syndrome

2006 ◽  
Vol 66 (3) ◽  
pp. 939-944 ◽  
Author(s):  
E. L. Ribeiro ◽  
M. L. Scroferneker ◽  
M. S. Cavalhaes ◽  
C. C. Campos ◽  
G. M. Nagato ◽  
...  
Keyword(s):  
Inhibitory Concentration ◽  
Down's Syndrome ◽  
Test Group ◽  
Down’S Syndrome ◽  
Antifungal Drugs ◽  
Control Group ◽  
Broth Microdilution ◽  
In Vitro Susceptibility ◽  
Biological Aspects

The aim of this article is to characterize the biological aspects of oral strains of C. albicans in children with Down's syndrome. These yeasts were analyzed as to their macromorphological and enzymatic aspects and were tested as to their in vitro susceptibility to antifungal drugs using broth microdilution to determine the minimum inhibitory concentration (MIC). The morphotyping revealed that all oral C. albicans isolates from children with Down's syndrome promoted the formation of fringes regardless of size, while the control group presented smaller fringes. All oral C. albicans strains produced proteinase, but those with phospholipolytic activity showed greater enzyme capacity in the test group. In vitro susceptibility showed that all oral C. albicans isolates were sensitive to the drugs used.

In vitro conversion of pregnenolone to progesterone by term human fetal membranes

1980 ◽  
Vol 136 (5) ◽  
pp. 631-634 ◽  
Author(s):  
William Gibb ◽  
Jean-Claude Lavoie ◽  
Jacques Roux
Keyword(s):  
Fetal Membranes

Fluid transport across human fetal membranes affected by human amniotic fluid prolactin: an in vitro study

Placenta ◽  
1988 ◽  
Vol 9 (5) ◽  
pp. 533-545 ◽  
Author(s):  
O.J.G.B. De Bakker-Teunissen ◽  
N.F.Th. Arts ◽  
G.H. Mulder
Keyword(s):  
Amniotic Fluid ◽  
Fluid Transport ◽  
In Vitro Study ◽  
Vitro Study ◽  
Fetal Membranes ◽  
Human Amniotic Fluid

scholarly journals Comparative analysis of biological aspects of Leishmania infantum isolates

2020 ◽  
Author(s):  
Taiana Ferreira-Paes ◽  
Karen S. Charret ◽  
Merienny R.S. Ribeiro ◽  
Raquel F. Rodrigues ◽  
Leon L. Leon
Keyword(s):  
Leishmania Infantum ◽  
No Production ◽  
Arginine Metabolism ◽  
Biological Behaviour ◽  
Biological Aspects ◽  
Oxide Synthase ◽  
Biological Differences

AbstractLeishmania infantum infantum (LII) is one of the species that causes visceral leishmaniasis (VL) in the Old World, while L. infantum chagasi (LIC), and is present in the New World. Few studies address the biological differences, as well as the behaviour of these strains during infection. These parasites live inside the cells of their hosts, continuously evading the microbicidal mechanisms and modulating the immune response of these cells. One of the mechanisms used by these protozoa involves the L-arginine metabolism. Given the importance of the understanding of differences between Leishmania species, as well as establishing a better murine model to study leishmaniases, the objectives of this work were to analyse the biological and molecular differences between two Leishmania infantum strains (LII and LIC) and the degree of susceptibility of mice with different genetic backgrounds to infection, as well as to understand the role of arginase (ARG)/nitric oxide synthase (NOS) in the parasite-host relationship. The infectivity in vivo and in vitro of LII and LIC was performed in BALB/c and Swiss Webster mice, as well the NOS and ARG activities. The LII strain showed more infective than the LIC strain both in vivo and in vitro. In animals infected by both strains, a difference in NOS and ARG activities occurred. In vitro, promastigotes of LII isolated from BALB/c and Swiss Webster mice showed higher ARG activity than the LIC during the growth curve, however, no difference was observed in intracellular NO production by promastigotes between these strains. A comparison of the sequences of the ARG gene was made and both strains were identical. However, despite the similarity, the strains showed different expression of this gene. It can be concluded that although L. chagasi strains are considered identical to L. infantum strains, both have different biological behaviour.

Organs-on-chips take baby steps

2019 ◽  
Vol 11 (492) ◽  
pp. eaax1713
Author(s):  
Megan L. McCain
Keyword(s):  
Fetal Membranes ◽  
Cellular Interactions ◽  
On Chip

Two organ-on-chip devices enable investigation of cellular interactions in human fetal membranes in vitro.

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