Evidence map›Paper›PMID 42881228›Full record

ArticleInternational journal of impotence research2026

Exploring extracts from Wendlandia Uvariifolia Subsp. Chinensis (Merr.) Cowan as natural phosphodiesterase type 5 inhibitors with preclinical anti-erectile dysfunction activity.

Wenhui Gu, Lingyu Wu, Zhiguo Yang, Zhongbin Cheng, Wenwen Liu, Yi-You Huang, Dan Liu, Faliang An, Jian Li, Qian Zhou and 2 more

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Article in International journal of impotence research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

12 authors.

Wenhui Gu *Key Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou, 570228, China.
Lingyu Wu *Key Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou, 570228, China.
Zhiguo Yang *Key Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou, 570228, China.
Zhongbin ChengKey Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou, 570228, China.
Wenwen LiuKey Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou, 570228, China.
Yi-You HuangKey Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou, 570228, China.
Dan LiuKey Laboratory of Structure-Based Drugs Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China.
Faliang AnState Key Laboratory of Bioreactor Engineering, Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
Jian LiKey Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou, 570228, China.
Qian ZhouKey Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou, 570228, China. zhouqian@hainanu.edu.cn.
Baoli LiKey Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou, 570228, China. baolili@hainanu.edu.cn.ORCID http://orcid.org/0000-0002-6291-791X
Hai-Bin LuoKey Laboratory of Tropical Biological Resources of Ministry of Education and Hainan Engineering Research Center for Drug Screening and Evaluation, School of Pharmaceutical Sciences, Hainan University, Haikou, 570228, China.ORCID http://orcid.org/0000-0002-2163-0509

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Wendlandia uvariifolia subsp. chinensis (Merr.) Cowan is a traditional medicinal plant used by the Li ethnic group in Hainan Province, China, for the treatment of herpes zoster. However, its pharmacological properties remain unclear. This study aimed to evaluate its phosphodiesterase type 5 inhibitory activity, identify the active components, and explore its therapeutic potential for erectile dysfunction. Through high-throughput screening of 1200 traditional Chinese herbal medicines, this plant was identified as a potential phosphodiesterase type 5 inhibitor. Bioactivity-guided fractionation and gas chromatography-mass spectrometry analysis identified the petroleum ether fraction as the most active fraction, while phytol, one of its identified constituents, inhibited phosphodiesterase type 5 in vitro with an IC₅₀ value of 2.5 ± 0.1 μmol/L. In H₂O₂-injured endothelial cells, petroleum ether fraction significantly restored nitric oxide production. In a paroxetine-induced erectile dysfunction rat model, the fraction improved sexual behavior parameters, restored NO/cGMP signaling, and alleviated pathological remodeling and fibrosis in the corpus cavernosum. In a diabetes mellitus-associated erectile dysfunction rat model, the fraction also improved corpus cavernosum architecture, increased smooth muscle content, and reduced fibrosis, although the increase in the intracavernous pressure/mean arterial pressure ratio did not reach statistical significance. Overall, the results suggest the preclinical anti-erectile dysfunction potential of petroleum ether fraction and support its further mechanistic, pharmacokinetic, safety, and translational evaluation.

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PMID42881228

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.