Ultrasound-Guided Intratendinous Injections With Platelet-Rich Plasma or Autologous Whole Blood for Treatment of Proximal Hamstring Tendinopathy

2015 ◽  
Vol 34 (8) ◽  
pp. 1455-1463 ◽  
Author(s):  
Kathleen L. Davenport ◽  
Jose Santiago Campos ◽  
Joseph Nguyen ◽  
Gregory Saboeiro ◽  
Ronald S. Adler ◽  
...  
Keyword(s):  
Whole Blood ◽  
Platelet Rich Plasma ◽  
Ultrasound Guided ◽  
Autologous Whole Blood ◽  
Proximal Hamstring

scholarly journals Effect of Platelet-Rich Plasma (PRP) versus Autologous Whole Blood on Pain and Function Improvement in Tennis Elbow: A Randomized Clinical Trial

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Seyed Ahmad Raeissadat ◽  
Leyla Sedighipour ◽  
Seyed Mansoor Rayegani ◽  
Mohammad Hasan Bahrami ◽  
Masume Bayat ◽  
...  
Keyword(s):  
Whole Blood ◽  
Tennis Elbow ◽  
Platelet Rich Plasma ◽  
Autologous Blood ◽  
Pressure Pain Threshold ◽  
Lateral Epicondylitis ◽  
Autologous Whole Blood ◽  
Significant Difference ◽  
Group 2 ◽  
And Function

Background. Autologous whole blood and platelet-rich plasma (PRP) have been both suggested to treat chronic tennis elbow. The aim of the present study was to compare the effects of PRP versus autologous whole blood local injection in chronic tennis elbow. Methods. Forty patients with tennis elbow were randomly divided into 2 groups. Group 1 was treated with a single injection of 2 mL of autologous PRP and group 2 with 2 mL of autologous blood. Tennis elbow strap, stretching, and strengthening exercises were administered for both groups during a 2-month followup. Pain and functional improvements were assessed using visual analog scale (VAS), modified Mayo Clinic performance index for the elbow, and pressure pain threshold (PPT) at 0, 4, and 8 weeks. Results. All pain and functional variables including VAS, PPT, and Mayo scores improved significantly in both groups 4 weeks after injection. No statistically significant difference was noted between groups regarding pain scores in 4-week follow-up examination (P>0.05). At 8-week reevaluations, VAS and Mayo scores improved only in PRP group (P<0.05). Conclusion. PRP and autologous whole blood injections are both effective to treat chronic lateral epicondylitis. PRP might be slightly superior in 8-week followup. However, further studies are suggested to get definite conclusion.

Inhibition of delayed arterial narrowing by the iron-chelating agent deferoxamine

1992 ◽  
Vol 77 (5) ◽  
pp. 763-767 ◽  
Author(s):  
Tsutomu Harada ◽  
Marc R. Mayberg
Keyword(s):  
Protective Effect ◽  
Femoral Artery ◽  
Whole Blood ◽  
Structural Changes ◽  
Morphological Changes ◽  
Platelet Rich Plasma ◽  
Ferric Ion ◽  
Dependent Manner ◽  
Cross Sectional ◽  
Autologous Whole Blood

✓ The potential role of iron in cerebral vasospasm was examined in the rat femoral artery model by the perivascular application of deferoxamine, a ferric ion chelator and antioxidant. In 25 rats, platelet-rich plasma or fresh autologous whole blood containing deferoxamine at concentrations of 1, 5, 10, or 15 mg/ml was applied to the adventitial surface of the femoral artery in a Silastic cuff to insure chronic exposure to the vessel wall. At 7 days, contralateral femoral arteries exposed to whole blood showed a 70% reduction in luminal cross-sectional area and morphological changes associated with vasospasm. Application of platelet-rich plasma or whole blood containing deferoxamine at 25 mg/ml produced no significant arterial narrowing or structural changes; significant intermediate reductions in arterial narrowing were observed at deferoxamine concentrations of 5 and 10 mg/ml. Presaturation deferoxamine (10 mg/ml) with excess ferric ion prior to application eliminated the protective effect. In addition, deferoxamine chelated the ferric ion released from incubated whole blood in vitro over 7 days in a dose-dependent manner consistent with its protective effect in vivo. Ferric ion may influence the development of chronic arterial narrowing after subarachnoid hemorrhage by a variety of mechanisms.

Platelet-Rich Plasma Versus Autologous Whole Blood for the Treatment of Chronic Lateral Elbow Epicondylitis

2011 ◽  
Vol 39 (10) ◽  
pp. 2130-2134 ◽  
Author(s):  
Christos Thanasas ◽  
George Papadimitriou ◽  
Charalambos Charalambidis ◽  
Ilias Paraskevopoulos ◽  
Athanasios Papanikolaou
Keyword(s):  
Whole Blood ◽  
Platelet Rich Plasma ◽  
Autologous Whole Blood ◽  
Lateral Elbow

Time Dependence of Whole Blood Aggregation in Response to Platelet Activating Factor (PAF)

1988 ◽  
Vol 59 (02) ◽  
pp. 162-163 ◽  
Author(s):  
R R Taylor ◽  
J Strophair ◽  
M Sturm ◽  
R Vandongen ◽  
L J Beilin
Keyword(s):  
Time Dependence ◽  
Whole Blood ◽  
Platelet Rich Plasma ◽  
Platelet Activating Factor ◽  
Sampling Time ◽  
Blood Sampling ◽  
Impedance Aggregometry

SummaryThe aggregation/adhesion response to platelet activating factor (PAF) was studied in diluted whole blood by impedance aggregometry. The extent of aggregation varied directly with the interval between blood sampling and aggregation measurement over the first 30 minutes from sampling, then remained stable for the next 60 minutes of observation. This is an effect opposite to that described for aggregation to PAF in platelet rich plasma which, however, cannot be studied soon after sampling. Time dependence of aggregation is important and comparative measurements should be made during the period of stable aggregability.

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