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A first prospective, randomized, double-blind, placebo-controlled study on the use of a standardized hop extract to alleviate menopausal discomforts.
Maturitas. 2006 May 20; 54(2):164-75.M

Abstract

OBJECTIVES

To examine the efficacy of a hop extract enriched in 8-prenylnaringenin (8-PN, the phytoestrogen in hops, Humulus lupulus L.) on relief of menopausal discomforts.

METHODS

A prospective, randomized, double-blind, placebo-controlled study over 12 weeks with 67 menopausal women, who were administered a hop extract standardized on 8-PN (100 or 250 microg). The responses were determined by means of a modified Kupperman index (KI) and a patients' questionnaire.

RESULTS

All groups, including placebo, showed a significant reduction of the KI both after 6 weeks and after 12 weeks. The hop extract at 100 microg 8-PN was significantly superior to placebo after 6 weeks (P=0.023) but not after 12 weeks (P=0.086). No dose-response relationship could be established, as the higher dose (250 microg) was less active than the lower dose both after 6 weeks and after 12 weeks. Still, a trend for a more rapid decrease of KI was noticed for both active groups as compared to placebo. In particular, the decrease in hot flush score (isolated from the KI) was found significant for both treatment groups after 6 weeks (P<0.01) with respect to placebo. Results of the patients' questionnaire were consistent with those of the KI, with the most pronounced effects being observed for the 100-microg treatment.

CONCLUSIONS

Daily intake of a hop extract, standardized on 8-PN as a potent phytoestrogen, exerted favorable effects on vasomotor symptoms and other menopausal discomforts. Hop-derived prenylated flavonoids may provide an attractive addition to the alternative treatments available for relief of hot flushes and other menopausal discomforts.

Authors+Show Affiliations

Heyerick A
Laboratory of Pharmacognosy and Phytochemistry, Ghent University-UGent, Harelbekestraat 72, 9000, and Department of Gynaecological Oncology, Ghent University Hospital, Ghent, Belgium. arne.heyerick@ugent.be
Vervarcke S
No affiliation info available
Depypere H
No affiliation info available
Bracke M
No affiliation info available
De Keukeleire D
No affiliation info available

MeSH

Double-Blind MethodFemaleFlavanonesHot FlashesHumansHumulusMenopauseMiddle AgedMolecular StructurePlacebosPlant ExtractsProspective Studies

Pub Type(s)

Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16321485

Citation

Heyerick, Arne, et al. "A First Prospective, Randomized, Double-blind, Placebo-controlled Study On the Use of a Standardized Hop Extract to Alleviate Menopausal Discomforts." Maturitas, vol. 54, no. 2, 2006, pp. 164-75.
Heyerick A, Vervarcke S, Depypere H, et al. A first prospective, randomized, double-blind, placebo-controlled study on the use of a standardized hop extract to alleviate menopausal discomforts. Maturitas. 2006;54(2):164-75.
Heyerick, A., Vervarcke, S., Depypere, H., Bracke, M., & De Keukeleire, D. (2006). A first prospective, randomized, double-blind, placebo-controlled study on the use of a standardized hop extract to alleviate menopausal discomforts. Maturitas, 54(2), 164-75.
Heyerick A, et al. A First Prospective, Randomized, Double-blind, Placebo-controlled Study On the Use of a Standardized Hop Extract to Alleviate Menopausal Discomforts. Maturitas. 2006 May 20;54(2):164-75. PubMed PMID: 16321485.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A first prospective, randomized, double-blind, placebo-controlled study on the use of a standardized hop extract to alleviate menopausal discomforts. AU - Heyerick,Arne, AU - Vervarcke,Stefaan, AU - Depypere,Herman, AU - Bracke,Marc, AU - De Keukeleire,Denis, PY - 2005/02/04/received PY - 2005/10/10/revised PY - 2005/10/11/accepted PY - 2005/12/3/pubmed PY - 2006/11/3/medline PY - 2005/12/3/entrez SP - 164 EP - 75 JF - Maturitas JO - Maturitas VL - 54 IS - 2 N2 - OBJECTIVES: To examine the efficacy of a hop extract enriched in 8-prenylnaringenin (8-PN, the phytoestrogen in hops, Humulus lupulus L.) on relief of menopausal discomforts. METHODS: A prospective, randomized, double-blind, placebo-controlled study over 12 weeks with 67 menopausal women, who were administered a hop extract standardized on 8-PN (100 or 250 microg). The responses were determined by means of a modified Kupperman index (KI) and a patients' questionnaire. RESULTS: All groups, including placebo, showed a significant reduction of the KI both after 6 weeks and after 12 weeks. The hop extract at 100 microg 8-PN was significantly superior to placebo after 6 weeks (P=0.023) but not after 12 weeks (P=0.086). No dose-response relationship could be established, as the higher dose (250 microg) was less active than the lower dose both after 6 weeks and after 12 weeks. Still, a trend for a more rapid decrease of KI was noticed for both active groups as compared to placebo. In particular, the decrease in hot flush score (isolated from the KI) was found significant for both treatment groups after 6 weeks (P<0.01) with respect to placebo. Results of the patients' questionnaire were consistent with those of the KI, with the most pronounced effects being observed for the 100-microg treatment. CONCLUSIONS: Daily intake of a hop extract, standardized on 8-PN as a potent phytoestrogen, exerted favorable effects on vasomotor symptoms and other menopausal discomforts. Hop-derived prenylated flavonoids may provide an attractive addition to the alternative treatments available for relief of hot flushes and other menopausal discomforts. SN - 0378-5122 UR - https://www.unboundmedicine.com/medline/citation/16321485/A_first_prospective_randomized_double_blind_placebo_controlled_study_on_the_use_of_a_standardized_hop_extract_to_alleviate_menopausal_discomforts_ DB - PRIME DP - Unbound Medicine ER -