Logo Medical Science Monitor

Call: +1.631.470.9640
Mon - Fri 10:00 am - 02:00 pm EST

Contact Us

Logo Medical Science Monitor Logo Medical Science Monitor Logo Medical Science Monitor

29 June 2018 : Laboratory Research

Effect of Repeated Freeze-Thaw on Serum Biomarkers Associated with Eye Disease

Yanting Gao1ABCDEF, Li Tang1ABCD, Binghua Tang1BCD, Wenjun Cao12AEFG*, Xinghuai Sun2345FG

DOI: 10.12659/MSM.908567

Med Sci Monit 2018; 24: LBR4481-4488

Abstract

BACKGROUND: Serum biomarkers are associated with eye diseases, which results in the need for cryopreservation of serum samples. However, the effect on serum biomarker levels of repeatedly freezing and thawing remains poorly understood. The aim of this study was to evaluate the effects of repeated freeze-thaw on the serum levels of the protein, complement C3c (C3c), the micromolecule, uric acid (UA), and the enzyme, angiotensin-converting enzyme (ACE).

MATERIAL AND METHODS: Serum samples were obtained from 50 patients who attended an ophthalmic outpatient department. Following baseline measurements, the serum samples from each subject were divided into aliquots and stored at –80°C for further analysis, following between one to six freeze-thaw cycles. The serum levels of C3c, UA, and ACE were measured immediately after the stored serum samples were thawed.

RESULTS: The serum level of C3c was significantly changed after the first freeze-thaw cycle (p<0.05), and a significant alteration in serum ACE levels occurred after the third freeze-thaw cycle (p<0.05). The serum UA level remained unchanged after all freeze-thaw cycles. Repeated freeze-thaw cycles significantly increased the serum levels of C3c and decreased the serum levels of ACE. The serum levels of C3c, UA, and ACE, respectively were significantly correlated (p<0.001), while the correlation coefficient for C3c and UA were improved when compared with ACE.

CONCLUSIONS: Repeated freeze-thaw can have variable effects on the serum levels of biomarkers, C3c, UA and ACE, which supports the need for quality control of cryopreserved serum for biomarker evaluation.

Keywords: Biological Markers, Biological Specimen Banks, serum, Specimen Handling

0 Comments

Weekly Editorial

18 October 2021 : Editorial

Editorial: Global Initiatives Support the Use and Regulation of Digital Health Technology During the COVID-19 Pandemic

Dinah V. Parums
Science Editor, Medical Science Monitor, International Scientific Information, Inc., Melville, NY, USA

DOI: 10.12659/MSM.935123

Med Sci Monit 2021; 27:e935123

SARS-CoV-2/COVID-19

11 October 2021 : Clinical Research

Clinical Features and Temporal Lung Radiographic Changes in 25 Patients Recovering from COVID-19 Pneumonia:...

Med Sci Monit In Press; DOI: 10.12659/MSM.933381  

08 September 2021 : Clinical Research

Acceptance of COVID-19 Vaccination and Its Associated Factors Among Cancer Patients Attending the Oncology ...

Med Sci Monit In Press; DOI: 10.12659/MSM.932788  

12 October 2021 : Review article

Silent Hypoxemia in Patients with COVID-19 Pneumonia: A Review

Med Sci Monit 2021; 27:e930776

In Press

18 Oct 2021 : Clinical Research

Adverse Side Effects Associated with Corticosteroid Therapy: A Study in 39 Patients with Generalized Myasth...

Med Sci Monit In Press; DOI: 10.12659/MSM.933296  

13 Oct 2021 : Clinical Research

Endovascular Repair of Thoracic Aorta Injury: 17 Years of Single-Center Experience

Med Sci Monit In Press; DOI: 10.12659/MSM.934479  

11 Oct 2021 : Clinical Research

Challenges for Polish Community Pharmacists in Provision of Services to Immigrants and Non-Polish-Speakers ...

Med Sci Monit In Press; DOI: 10.12659/MSM.933678  

11 Oct 2021 : Clinical Research

Epidemiology of Birth Defects in Eastern China and the Associated Risk Factors

Med Sci Monit In Press; DOI: 10.12659/MSM.933782  

Most Viewed Current Articles

20 Mar 2020 : Clinical Research

Social Capital and Sleep Quality in Individuals Who Self-Isolated for 14 Days During the Coronavirus Diseas...

DOI :10.12659/MSM.923921

Med Sci Monit 2020; 26:e923921

15 Apr 2020 : Clinical Research

Psychological Impact and Coping Strategies of Frontline Medical Staff in Hunan Between January and March 20...

DOI :10.12659/MSM.924171

Med Sci Monit 2020; 26:e924171

05 May 2020 : Review article

An Evidence Based Perspective on mRNA-SARS-CoV-2 Vaccine Development

DOI :10.12659/MSM.924700

Med Sci Monit 2020; 26:e924700

26 Apr 2020 : Clinical Research

Comparison of Prevalence and Associated Factors of Anxiety and Depression Among People Affected by versus P...

DOI :10.12659/MSM.924609

Med Sci Monit 2020; 26:e924609

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750