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Completed

NCT Number: NCT04456907

Systemic Effects After Local Injection of Platelet-rich Plasma

Objective Platelet-rich plasma (PRP) is widely utilized in the treatment of sports injuries with favorable outcomes. However, potential systemic effects after localized PRP injection are unclear at present.

Design: prospective randomized study Methods Twenty-four Taiwanese male athletes with tendinopathy were randomized into a PRP group (n = 13) or a saline group (n = 11).

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Key information

Conditions

Platelet Rich Plasma (PRP)

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

Chang Gung Medical Hosptial

Kaohsiung City, 833, Taiwan

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Adult male athletes were diagnosed with tendinitis

Exclusion criteria

  • Receive local injections and surgery within three months
  • Systemic disease
  • Diagnosis of anemia

Treatment and study plan

Platelet Rich Plasma

Other

Autologous platelet-rich plasma (PRP) was prepared using the RegenKit THT system (RegenLab SA, Le Mont-sur-Lausanne, Switzerland) following the manufacturer's instructions. Medical technicians, who had been well-trained by the manufacturer, were responsible for the process of PRP preparation. For each patient, 8-10 mL of venous blood was drawn and collected to the commercial RegnLab THT tube, which contained 1 mL sodium citrate. After single centrifugation at 3400 revolutions per minute (rpm) for 8 minutes, 4-5 mL of PRP was yielded with leukocytes maintained at physiological levels and red blood cells depleted. Then, the blood components were separated, with the platelet pellet resting on the separating gel. PRP for later application was obtained by re-suspending the platelet pellet in the plasma supernatant by gently inverting the unopened RegenKit THT tube 5 to 10 times.

Saline injection

Other

saline injection

Primary outcomes

  1. Urinary excretion of endogenous AAS metabolites

    Time frame: 1 week

    Doping substances in urine, mainly metabolites of anabolic androgenic steroids (AAS), were quantified, including testosterone (17β-hydroxyandrost-4-en-3-one), epitestosterone (17α- hydroxy-4-androsten-3-one), androsterone (4-androsten-3,17-dione), etiocholanolone (3α-hydroxy-5β-androstan-17-one), DHEA (dehydroepiandrosterone), dihydroandrosterone (5α- androstane-3α,17β-diol), and etiocholane-3α,17β-diol (5β -androstane-3α,17β-diol). Each urine sample (6 mL) was mixed with 50 μL standard solution and 1 mL phosphate buffer, and the mixture was heated for 60 min at 50°C. After cooling at room temperature, liquid-liquid extraction was performed, and phase separation was achieved. The organic extract was evaporated to dryness, and the dried residue was further derivatized with 50 μL of MSTFA solution for 30 min at 60°C. Finally, the sample was subjected to gas chromatographic analysis and mass spectrometric analysis for quantification of doping substances of interest.

Sponsors and collaborators

Lead sponsor

Chang Gung Memorial Hospital

Other

Registry information

Important dates

Study start
2017
Primary completion
2017
Study completion
2018
First posted
Jul 7, 2020
Registry last updated
Jul 7, 2020

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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