PMID- 34067222 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210615 IS - 2076-3921 (Print) IS - 2076-3921 (Electronic) IS - 2076-3921 (Linking) VI - 10 IP - 5 DP - 2021 May 7 TI - Protective Effect of Chlorogenic Acid on Human Sperm: In Vitro Studies and Frozen-Thawed Protocol. LID - 10.3390/antiox10050744 [doi] LID - 744 AB - The study evaluated the chlorogenic acid (CGA) antioxidant potential on oxidative stress (OS) induced in vitro in human spermatozoa and during cryopreservation procedure. Swim-up selected spermatozoa were treated with 100 microM CGA, 100 microM H(2)O(2) to induce lipid peroxidation (LPO), and with both compounds and the effects on mitochondrial membrane potential (MMP) by JC-1, DNA integrity by acridine orange (AO), and sperm ultrastructure by transmission electron microscopy (TEM), were evaluated. CGA antioxidant activity was assessed by measuring malondialdehyde (MDA) and F(2)-isoprostanes (F(2)-IsoPs) in the media. The CGA protective activity and the immunolocalization of Phospho-AMPKalpha (Thr172) were explored in frozen-thawed sperm. CGA was not toxic for sperm motility, DNA integrity and MMP. The increase in MDA (p < 0.05) and F(2)-IsoPs (p < 0.001), DNA damage (p < 0.01) and low MMP (p < 0.01) levels after H(2)O(2) treatment were reduced in presence of CGA as well as the percentage of broken plasma membranes (p < 0.01) and altered acrosomes (p < 0.01) detected by TEM. Treated frozen-thawed spermatozoa showed increased sperm motility (p < 0.01), DNA integrity (p < 0.01), MMP (p < 0.01), reduced MDA (p < 0.01) and increased sperm percentage with Phospho-AMPKalpha labelling in the head (p < 0.001). CGA can be used to supplement culture media during semen handling and cryopreservation where OS is exacerbated. FAU - Noto, Daria AU - Noto D AUID- ORCID: 0000-0002-1571-9056 AD - Department of Molecular and Developmental Medicine, University of Siena, 53100 Siena, Italy. FAU - Collodel, Giulia AU - Collodel G AUID- ORCID: 0000-0003-1587-0159 AD - Department of Molecular and Developmental Medicine, University of Siena, 53100 Siena, Italy. FAU - Cerretani, Daniela AU - Cerretani D AUID- ORCID: 0000-0001-9498-1644 AD - Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy. FAU - Signorini, Cinzia AU - Signorini C AUID- ORCID: 0000-0003-0006-9414 AD - Department of Molecular and Developmental Medicine, University of Siena, 53100 Siena, Italy. FAU - Gambera, Laura AU - Gambera L AD - Fertility Center, AGI Medica, 53100 Siena, Italy. FAU - Menchiari, Andrea AU - Menchiari A AD - Department of Business and Law, University of Siena, 53100 Siena, Italy. FAU - Moretti, Elena AU - Moretti E AUID- ORCID: 0000-0002-9467-0501 AD - Department of Molecular and Developmental Medicine, University of Siena, 53100 Siena, Italy. LA - eng PT - Journal Article DEP - 20210507 PL - Switzerland TA - Antioxidants (Basel) JT - Antioxidants (Basel, Switzerland) JID - 101668981 PMC - PMC8150895 OTO - NOTNLM OT - AMPK OT - DNA integrity OT - MDA OT - TEM OT - chlorogenic acid OT - cryopreservation OT - human sperm OT - isoprostanes OT - membrane mitochondrial potential OT - oxidative stress COIS- The authors declare no conflict of interest. EDAT- 2021/06/03 06:00 MHDA- 2021/06/03 06:01 PMCR- 2021/05/07 CRDT- 2021/06/02 01:18 PHST- 2021/04/14 00:00 [received] PHST- 2021/05/03 00:00 [revised] PHST- 2021/05/05 00:00 [accepted] PHST- 2021/06/02 01:18 [entrez] PHST- 2021/06/03 06:00 [pubmed] PHST- 2021/06/03 06:01 [medline] PHST- 2021/05/07 00:00 [pmc-release] AID - antiox10050744 [pii] AID - antioxidants-10-00744 [pii] AID - 10.3390/antiox10050744 [doi] PST - epublish SO - Antioxidants (Basel). 2021 May 7;10(5):744. doi: 10.3390/antiox10050744.