scholarly journals Evidence for a diffusible factor that induces susceptibility in the C olletotrichum –maize disease interaction

2013 ◽  
Vol 15 (1) ◽  
pp. 80-93 ◽  
Author(s):  
Maria F. Torres ◽  
Diego F. Cuadros ◽  
Lisa J. Vaillancourt
Keyword(s):  
Diffusible Factor

Intrinsic mineralization defect inHyp mouse osteoblasts

1998 ◽  
Vol 275 (4) ◽  
pp. E700-E708 ◽  
Author(s):  
Z. S. Xiao ◽  
M. Crenshaw ◽  
R. Guo ◽  
T. Nesbitt ◽  
M. K. Drezner ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Human Disease ◽  
Normal Mouse ◽  
Simian Virus 40 ◽  
Simian Virus ◽  
Diffusible Factor ◽  
Murine Homologue ◽  
Mineralization Defect ◽  
Inactivating Mutations

X-linked hypophosphatemia (XLH) is caused by inactivating mutations of PEX, an endopeptidase of uncertain function. This defect is shared by Hyp mice, the murine homologue of the human disease, in which a 3′ Pex deletion has been documented. In the present study, we report that immortalized osteoblasts derived from the simian virus 40 (SV40) transgenic Hyp mouse (TMOb- Hyp) have an impaired capacity to mineralize extracellular matrix in vitro. Compared with immortalized osteoblasts from the SV40 transgenic normal mouse (TMOb-Nl), osteoblast cultures from the SV40 Hyp mouse exhibit diminished 45Ca accumulation into extracellular matrix (37 ± 6 vs. 1,484 ± 68 counts ⋅ min−1 ⋅ μg protein−1) and reduced formation of mineralization nodules. Moreover, in coculture experiments, we found evidence that osteoblasts from the SV40 Hyp mouse produce a diffusible factor that blocks mineralization of extracellular matrix in normal osteoblasts. Our findings indicate that abnormal PEX in osteoblasts is associated with the accumulation of a factor(s) that inhibits mineralization of extracellular matrix in vitro.

THE HYDROLYSIS OF MONOPHOSPHOINOSITIDE BY EXTRACTS OF BRAIN

1967 ◽  
Vol 45 (6) ◽  
pp. 853-861 ◽  
Author(s):  
W. Thompson
Keyword(s):  
Fatty Acids ◽  
Enzyme Activity ◽  
Calcium Ions ◽  
Brain Extract ◽  
Monovalent Cations ◽  
High Concentration ◽  
Diffusible Factor ◽  
Hydrolysis Of ◽  
The Brain ◽  
Long Chain

The hydrolysis of monophosphoinositide by soluble extracts from rat brain is described. Diglyceride and inositol monophosphate are liberated along with a small amount of free fatty acids. Hydrolysis of the lipid is optimal at pH 5.4 in acetate buffer. The reaction is stimulated by calcium ions or by high concentration of monovalent cations and, to a less extent, by long-chain cationic amphipathic compounds. Enzyme activity is lost on dialysis of the brain extract and can be restored by diffusible factor(s). Some differences in the conditions for hydrolysis of mono- and tri-phosphoinositides are noted.

scholarly journals Biochemical characteristics of a diffusible factor that induces gametophyte to sporophyte switching in the brown alga Ectocarpus

2021 ◽  
Author(s):  
Haiqin Yao ◽  
Delphine Scornet ◽  
Murielle Jam ◽  
Cécile Hervé ◽  
Philippe Potin ◽  
...  
Keyword(s):  
Brown Alga ◽  
Biochemical Characteristics ◽  
Diffusible Factor

In vitro analysis of interactions between sensory neurons and skin: evidence for selective innervation of dermis and epidermis

Development ◽  
1985 ◽  
Vol 86 (1) ◽  
pp. 53-70
Author(s):  
J.-M. Verna
Keyword(s):  
Ganglion Cells ◽  
Neurite Growth ◽  
Epidermal Cells ◽  
Serum Free Medium ◽  
Diffusible Factor ◽  
Vitro Analysis ◽  
Dermal Cells ◽  
Dorsal Root Ganglion Cells ◽  
In Vitro Analysis

Axons from dorsal root ganglion cells cultured in a serum-free medium on poly-L-lysine or collagen substrates interact differently with dermis and epidermis. The orientation of neurite growth is not changed by encountering mesenchymal cells migrating from the outgrowth zone of a dermal explant, and neurites form close membrane associations with some dermal cells; in contrast, neurites strongly avoid epidermis and deviate around the edge of an epidermal explant. When cultures are grown on polylysine this avoidance behaviour occurs at a distance from the epidermis. It is suppressed in the presence of necrotic epidermal cells. We suggest that this avoidance is due to epidermal diffusible factor(s) which bind preferentially to polylysine. The possibility of an absence of specific recognition cues between neurites and epidermal cells is discussed.

Modulation by the src oncogene of the effect of inhibitory diffusible factor IDF45

1987 ◽  
Vol 130 (3) ◽  
pp. 416-419 ◽  
Author(s):  
C. Blat ◽  
J. Villaudy ◽  
D. Rouillard ◽  
A. Golde ◽  
L. Harel
Keyword(s):  
Diffusible Factor

Inhibitory diffusible factor IDF45, a G1 phase inhibitor

FEBS Letters ◽  
1986 ◽  
Vol 203 (2) ◽  
pp. 175-180 ◽  
Author(s):  
Christiane Blat ◽  
Gilles Chatelain ◽  
Geneviéve Desauty ◽  
Louise Harel
Keyword(s):  
G1 Phase ◽  
Diffusible Factor
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