Bovine Collagen

2021 ◽  
Keyword(s):  
Bovine Collagen

Thrombin Stimulated Platelet Accumulation on Protein Coated Glass Capillaries: Role of Adhesive Platelet α-Granule Proteins

1989 ◽  
Vol 62 (03) ◽  
pp. 989-995 ◽  
Author(s):  
Juliette N Mulvihill ◽  
J Andrew Davies ◽  
Florence Toti ◽  
Jean-Marie Freyssinet ◽  
Jean-Pierre Cazenave
Keyword(s):  
Human Platelets ◽  
Capillary Perfusion ◽  
Coated Glass ◽  
Bovine Collagen ◽  
Glass Capillaries ◽  
Human Thrombin ◽  
Platelet Accumulation ◽  
Granule Proteins ◽  
Von Willebrand

SummaryThe generation of trace amounts of thrombin at artificial surfaces in contact with blood is likely to be a contributing factor in thrombosis on biomaterials. Using an in vitro capillary perfusion system, platelet accumulation on glass surfaces, uncoated or precoated with purified bovine collagen or human plasma proteins, was determined in the presence or absence of preadsorbed purified human thrombin. Static adsorption for 15 min at 22° C from solutions of thrombin 100 NIH units (33 μg)/ml gave surface concentrations in the range 0.019-0.101 μg/cm2. Protein coated capillaries, thrombin treated or untreated, were perfused for 2 min at 37° C with suspensions of washed 111In-labeled human platelets in Tyrode's-albumin buffer containing 40% washed red blood cells, under conditions of controlled, non pulsatile laminar flow (50 s−1 or 2,000 s−1). Platelet accumulation was increased in the presence of surface adsorbed thrombin on uncoated and albumin or fibrinogen coated glass but little affected on fibronectin or collagen coated glass. On von Willebrand factor (vWF) coated glass, thrombin enhancement was observed only at high shear forces. In experiments using antibodies against human platelet α-granule proteins, thrombin stimulated platelet deposition in uncoated glass capillaries was inhibited at 2,000 s−1 by anti-vWF and to a lesser extent by anti-fibrinogen but not by antithrombospondin antibodies.

Fetal Bovine Collagen Grafts for Repair of Tegmen Defects and Encephaloceles via Middle Cranial Fossa Approach

2020 ◽  
Author(s):  
Anand Patel ◽  
Matthew R. Bartindale ◽  
Jehad A. Zakaria ◽  
Anand V. Germanwala ◽  
Douglas E. Anderson ◽  
...  
Keyword(s):  
Middle Cranial Fossa ◽  
Middle Cranial Fossa Approach ◽  
Bovine Collagen ◽  
Cranial Fossa ◽  
Fetal Bovine

Effect of a bovine collagen matrix on tendon adhesions during the repair of rat Achilles tendon

2021 ◽  
Author(s):  
M. Gürler ◽  
T. Aksan ◽  
M.B. Özturk ◽  
M. Tezcan ◽  
A.N. Toksöz Yıldırım ◽  
...  
Keyword(s):  
Achilles Tendon ◽  
Collagen Matrix ◽  
Bovine Collagen

Vermilion Border Cheiloplasty

1996 ◽  
Vol 13 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Scott E. Gilbert
Keyword(s):  
Surgical Procedure ◽  
Aging Process ◽  
Scar Formation ◽  
Fat Tissue ◽  
Bovine Collagen ◽  
Aging Face

The aging process is, in part, characterized by thinning lips, This is antithetical to our culture, which idolizes youth and the plump, full lips associated with youthfulness. Because the appearance of aging lips is not desirable, and many times aging face techniques accentuate the thinning, techniques have been developed to augment aging oral labia. Substances such as fat tissue and bovine collagen are among the choices for use in injectable augmentation. Use of these products will temporarily fill thinning, wrinkled lips, as well as other perioral structures. The use of Gore-Tex provides more permanent enhancement, but is limited as to results. Vermilion border cheiloplasty is a permanent surgical procedure to augment labial tissue that can create lips of virtually any size or shape, as well as excise perioral rhytids. Herein we review 65 lip-lifts (cheiloplasty), with or without corner lifts, where the incision extends beyond commissure. These procedures may be performed together or independently on both the upper and lower labia. However, poor scar formation, asymmetries, and prolonged healing make this a procedure for those who fail lesser techniques.

Development of Rheumatoid Factors and Anti-F(ab′)2 Antibodies in Guinea Pigs Immunized with Type II Bovine Collagen

1986 ◽  
Vol 80 (2) ◽  
pp. 214-220 ◽  
Author(s):  
Benjamin Wolf ◽  
Reza I. Bashey ◽  
Charles D. Newton ◽  
Sergio A. Jimenez
Keyword(s):  
Guinea Pigs ◽  
Type Ii ◽  
Rheumatoid Factors ◽  
Bovine Collagen

Peripheral Nerve Injection Injury with Purified Bovine Collagen— An Experimental Model in the Rat

1985 ◽  
Vol 14 (5) ◽  
pp. 428-436 ◽  
Author(s):  
Susan E. Mackinnon ◽  
Alan R. Hudson ◽  
Victoria Bojanowski ◽  
Daniel A. Hunter ◽  
Elias Maraghi
Keyword(s):  
Peripheral Nerve ◽  
Experimental Model ◽  
Injection Injury ◽  
Bovine Collagen

Human Antibody Response Following Multiple Injections of Bovine Collagen

1991 ◽  
Vol 87 (6) ◽  
pp. 1080-1088 ◽  
Author(s):  
David H. Frank ◽  
Leslie Vakassian ◽  
Jack C. Fisher ◽  
Nuri Ozkan
Keyword(s):  
Antibody Response ◽  
Human Antibody ◽  
Multiple Injections ◽  
Bovine Collagen
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