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Tanaka K, Hitosugi M, Takaso M, Nakamura M, Takeda A. Affecting Factors of Prostate Volume in Forensic Autopsied Decedents. Healthcare (Basel) 2023; 11:healthcare11101486. [PMID: 37239771 DOI: 10.3390/healthcare11101486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/05/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
Because decedents undergoing forensic autopsies would have behaved normally before death, prostate volume according to age group can be confirmed with forensic autopsy materials. The objectives of this study were to first confirm the current prostate volume by age and then determine diseases that can influence prostate volume using forensic autopsy materials. Prostate specimens were collected from forensic autopsies performed at Shiga University of Medical Science, Japan, between January 2015 and December 2019. Overall, 207 decedents were included in the study. Prostate volume was measured by the Archimedes' principle. Concomitant diseases were determined by the past medical histories and autopsy results. The mean crude prostate volume was 29.1 ± 10.3 mL (range, 2.8-88.0 mL). The crude prostate volume increased with age. The mean corrected prostate volume (divided by body surface area) was significantly higher in patients with atherosclerosis than in those without. However, multiple regression analysis revealed that only age influenced the corrected prostate volume. Age was the only significant influencing factor for prostate volume. We propose applying age estimation using prostate volume for forensic medicine purposes. Because prostate volume was not influenced by concomitant disease, it would be valuable to estimate the decedent's age using the prostate volume.
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Affiliation(s)
- Kota Tanaka
- Department of Legal Medicine, Shiga University of Medical Science, Otsu 520-2192, Japan
| | - Masahito Hitosugi
- Department of Legal Medicine, Shiga University of Medical Science, Otsu 520-2192, Japan
| | - Marin Takaso
- Department of Legal Medicine, Shiga University of Medical Science, Otsu 520-2192, Japan
| | - Mami Nakamura
- Department of Legal Medicine, Shiga University of Medical Science, Otsu 520-2192, Japan
| | - Arisa Takeda
- Department of Legal Medicine, Shiga University of Medical Science, Otsu 520-2192, Japan
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A Raman algorithm to estimate human age from protein structural variations in autopsy skin samples: a protein biological clock. Sci Rep 2021; 11:5949. [PMID: 33723323 PMCID: PMC7960715 DOI: 10.1038/s41598-021-85371-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 03/01/2021] [Indexed: 11/29/2022] Open
Abstract
The recent increase of the number of unidentified cadavers has become a serious problem throughout the world. As a simple and objective method for age estimation, we attempted to utilize Raman spectrometry for forensic identification. Raman spectroscopy is an optical-based vibrational spectroscopic technique that provides detailed information regarding a sample’s molecular composition and structures. Building upon our previous proof-of-concept study, we measured the Raman spectra of abdominal skin samples from 132 autopsy cases and the protein-folding intensity ratio, RPF, defined as the ratio between the Raman signals from a random coil an α-helix. There was a strong negative correlation between age and RPF with a Pearson correlation coefficient of r = 0.878. Four models, based on linear (RPF), squared (RPF2), sex, and RPF by sex interaction terms, were examined. The results of cross validation suggested that the second model including linear and squared terms was the best model with the lowest root mean squared error (11.3 years of age) and the highest coefficient of determination (0.743). Our results indicate that the there was a high correlation between the age and RPF and the Raman biological clock of protein folding can be used as a simple and objective forensic age estimation method for unidentified cadavers.
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Ikegaya H, Suzuki M, Kondou H, Kawai T, Sato Y, Kitamura T, Kume H. Nose size indicates maximum penile length. Basic Clin Androl 2021; 31:3. [PMID: 33535970 PMCID: PMC7860195 DOI: 10.1186/s12610-021-00121-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 01/11/2021] [Indexed: 11/13/2022] Open
Abstract
Background In a previous report, we investigated whether the size of male genitalia similarly exposed to serum testosterone during aging could change with age and found that penile length almost stopped increasing during adolescence and decreased in older males. In this report, to determine what factors other than age are related to penile length, we performed a multivariate analysis of the relationships between stretched penile length (SPL) and other measurements of genital organs, nose size, height and body weight in 126 adults in their 30s–50s. Results The most highly correlated factor with SPL was flaccid penile length (r = 0.565, P < 0.0001). The next highest correlation was nose size (r = 0.564, P < 0.0001). The penile stretched rate correlated with FPL (r = − 0.690, P < 0.0001) but not with SPL or penile circumference. Conclusions The fact that nose size is related to SPL indicates that penile length may not be determined by age, height or body weight but has already been determined before birth.
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Affiliation(s)
- Hiroshi Ikegaya
- Department of Forensics Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kajii-cho 465, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan.
| | - Motofumi Suzuki
- Department of Urology, Tokyo Metropolitan Bokutoh Hospital, 4-23-15 Kotobashi, Sumida-ku, Tokyo, 130-8575, Japan.,Department of Urology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Hiroki Kondou
- Department of Forensics Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kajii-cho 465, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Taketo Kawai
- Department of Urology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Yusuke Sato
- Department of Urology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Tadaichi Kitamura
- Department of Urology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Haruki Kume
- Department of Urology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
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