Evidence map›Paper›PMID 32266534›Full record

ArticleInternational journal of legal medicine2020

Identification of spermatozoa using a novel 3-plex MSRE-PCR assay for forensic examination of sexual assaults.

Kuo-Lan Liu, Li-Chin Tsai, Yu-Chih Lin, Nu-En Huang, Lih-Jing Yang, Chih-Wen Su, James Chun-I Lee, Adrian Linacre, Hsing-Mei Hsieh

Abstract read
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In one paragraph

Article in International journal of legal medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.9field-weighted citation impact, top 24% of its field
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

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 10 citations in OpenAlex.

  1. Review
  2. Saliva identification by RT-LAMP integrated with CRISPR-Cas and LFA.Forensic science, medicine, and pathology · 2025
    Article
  3. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 3 countries.

Kuo-Lan LiuDepartment of Forensic Science, Central Police University, 56 Shu-Jen Road, Kwei-San, Taoyuan, 33304, Taiwan, Republic of China.
Li-Chin TsaiDepartment of Forensic Science, Central Police University, 56 Shu-Jen Road, Kwei-San, Taoyuan, 33304, Taiwan, Republic of China.
Yu-Chih LinTaichung City Government Police Department, 588 Wenxin Road Section 2, Xitun District, Taichung City, 40758, Taiwan, Republic of China.
Nu-En HuangForensic Biology Division, Criminal Investigation Bureau, National Police Agency, 5 Lane 553, Chung Hsiao East Road Section 4, Xinyi District, Taipei, 11072, Taiwan, Republic of China.
Lih-Jing YangForensic Biology Division, Criminal Investigation Bureau, National Police Agency, 5 Lane 553, Chung Hsiao East Road Section 4, Xinyi District, Taipei, 11072, Taiwan, Republic of China.
Chih-Wen SuForensic Biology Division, Criminal Investigation Bureau, National Police Agency, 5 Lane 553, Chung Hsiao East Road Section 4, Xinyi District, Taipei, 11072, Taiwan, Republic of China.
James Chun-I LeeDepartment of Forensic Medicine, College of Medicine, National Taiwan University, 1 Jen-Ai Road Section 1, Taipei, 10051, Taiwan, Republic of China.
Adrian LinacreCollege of Science & Engineering, Flinders University, Adelaide, 5001, Australia.
Hsing-Mei HsiehDepartment of Forensic Science, Central Police University, 56 Shu-Jen Road, Kwei-San, Taoyuan, 33304, Taiwan, Republic of China. mei@mail.cpu.edu.tw.ORCID https://orcid.org/0000-0001-7467-1278
Central Police University · TWFlinders University · AUNational Taiwan University · TWTaichung City Government · TW

Funding

Ministry of Science and Technology, Taiwan NSC 102-2628-B-015-001-MY2Ministry of the Interior of Taiwan 108-0805-05-17-01
6 · The paper itself

Abstract

Identification of semen and then spermatozoa is essential to verify that sexual activity has occurred in alleged cases of sexual assault. Microscopic examination commonly used for spermatozoa identification is however time-consuming and can often lead to false-negative results for samples with deformed and, or, limited number of spermatozoa. To address this limitation, we report on a novel 3-plex MSRE-PCR (methylation-sensitive restriction enzyme-PCR) assay to specifically identify spermatozoa. This assay is comprised of 3 markers: a digestive control marker (DC), sperm-specific marker (SP), and Y chromosome marker (SRY). A total of 214 samples from 10 body fluids or tissues were analyzed. Specificity testing showed that all the normal semen samples were unambiguously identified as being sperm-positive, and no other body fluid (or tissues) showed a sperm-specific signal in the electropherogram. Testing for sensitivity showed that 0.1 ng of DNA from a semen extract was sufficient to identify the presence of spermatozoa by this assay. Mixture analyses illustrated the sensitivity of the assay when the vaginal/semen DNA ratio (80/0.1) was under 800 or the menstrual blood/semen DNA ratio (5/0.1) was under 50, the trace amounts (approximately 0.1 ng) of DNA from semen can still be identified by this 3-plex MSRE-PCR assay. This assay was also applied to the identification of 31 non-probative forensic samples from 18 sexual assault cases. The case studies showed that the 3-plex MSRE-PCR assay was an improvement in the sensitivity of spermatozoa detection.

Indexed as

Forensic MedicineSex OffensesAdultBiomarkersBodily SecretionsBody FluidsDNADNA MethylationFemaleHumansMaleMiddle AgedPolymerase Chain ReactionRestriction MappingSemenSensitivity and SpecificityBiomarkersDNAMethylation-sensitive restriction enzyme-PCR (MSRE-PCR)Sex-determining region Y (SRY)Sexual assaultSpermatozoa identification

Identifiers

PMID32266534
OpenAlexW3014557796

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.