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Nassir M, Levi M, Wiser A, Shaked NT. Evaluation of women's aging influence on sperm passage inside the fallopian tube using 3D dynamic mechanical modeling. Front Bioeng Biotechnol 2024; 12:1324802. [PMID: 38712332 PMCID: PMC11070836 DOI: 10.3389/fbioe.2024.1324802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 02/27/2024] [Indexed: 05/08/2024] Open
Abstract
The fallopian tubes play an important role in human fertility by facilitating the spermatozoa passage to the oocyte as well as later actively facilitating the fertilized oocyte transportation to the uterus cavity. The fallopian tubes undergo changes involving biological, physical, and morphological processes due to women aging, which may impair fertility. Here, we have modelled fallopian tubes of women at different ages and evaluated the chances of normal and pathological sperm cells reaching the fertilization site, the ampulla. By utilizing a unique combination of simulative tools, we implemented dynamic three-dimensional (3D) detailed geometrical models of many normal and pathological sperm cells swimming together in 3D geometrical models of three fallopian tubes associated with different women's age groups. By tracking the sperm cell swim, we found that for all age groups, the number of normal sperm cells in the ampulla is the largest, compared with the pathological sperm cells. On the other hand, the number of normal sperm cells in the fertilization site decreases due to the morphological and mechanical changes that occur in the fallopian tube with age. Moreover, in older ages, the normal sperm cells swim with lower velocities and for shorter distances inside the ampulla toward the ovary. Thus, the changes that the human fallopian tube undergoes due to women's aging have a significant influence on the human sperm cell motility. Our model of sperm cell motility through the fallopian tube in relation to the woman's age morphological changes provides a new scope for the investigation and treatment of diseases and infertility cases associated with aging, as well as a potential personalized medicine tool for evaluating the chances of a natural fertilization per specific features of a man's sperm and a woman's reproductive system.
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Affiliation(s)
- Mayssam Nassir
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel
| | - Mattan Levi
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel
| | - Amir Wiser
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Natan T. Shaked
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel
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Zhao M, Nie H, Wang H, Fang J, Wang F, Wang H, Yu H, Bai X, Zhang Y, Xiong Q, Cai H, Zhao Q. Novel oviduct endoscope combining optical coherence tomography with intratubal ultrasonography for fallopian tube exploration: An in vivo rabbit pilot study. Photodiagnosis Photodyn Ther 2023; 43:103650. [PMID: 37302641 DOI: 10.1016/j.pdpdt.2023.103650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 05/26/2023] [Accepted: 06/05/2023] [Indexed: 06/13/2023]
Abstract
BACKGROUND AND STUDY AIM Currently, several limitations exist in the examination of the oviduct. In this study, the usefulness and feasibility of a novel ultrafine dual-modality oviduct endoscopy device for in vivo assessment of the oviduct were evaluated. METHODS Five Japanese white rabbits were selected to undergo oviduct probing using a combination of optical coherence tomography (OCT) and intratubal ultrasonography. The feasibility of the procedure was evaluated through 152 pairs of clear, clinically interpretable images obtained using spiral scanning via the pull-back method. OCT images were compared with the oviduct histopathology sections. RESULTS Visualization of the oviduct using both OCT and ultrasound revealed a differentiated three-layer tissue; however, ultrasound showed a poorer clarity than OCT. By comparing OCT images with the histological morphology of the oviduct, the inner low-reflective layer of the oviduct corresponds to the mucosal layer, the middle high-reflective layer corresponds to the fibrous muscle layer, and the outer low-reflective layer corresponds to the connective tissue layer. Postoperatively, the general condition of the animals was good. CONCLUSION This study demonstrated the feasibility and potential clinical value of the novel ultrafine dual-modality oviduct endoscope. Dual-modality imaging of OCT and intratubal ultrasonography can provide clearer microstructure of the oviduct wall.
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Affiliation(s)
- Mengya Zhao
- Department of Gynecologic Oncology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Haihang Nie
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Clinical Center and Key Lab of Intestinal and Colorectal Diseases of Hubei Province, Wuhan 430071, China
| | - Hongling Wang
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Clinical Center and Key Lab of Intestinal and Colorectal Diseases of Hubei Province, Wuhan 430071, China
| | - Jun Fang
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Clinical Center and Key Lab of Intestinal and Colorectal Diseases of Hubei Province, Wuhan 430071, China
| | - Fan Wang
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Clinical Center and Key Lab of Intestinal and Colorectal Diseases of Hubei Province, Wuhan 430071, China
| | - Haizhou Wang
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Clinical Center and Key Lab of Intestinal and Colorectal Diseases of Hubei Province, Wuhan 430071, China
| | - Hualiang Yu
- InnerMedical Co. Ltd, Shenzhen 518000, China
| | | | - Yafei Zhang
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Clinical Center and Key Lab of Intestinal and Colorectal Diseases of Hubei Province, Wuhan 430071, China
| | | | - Hongbing Cai
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Qiu Zhao
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Clinical Center and Key Lab of Intestinal and Colorectal Diseases of Hubei Province, Wuhan 430071, China.
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Abstract
This article reviews the most recent studies incorporating diagnostic imaging modalities into gynecologic and obstetric care. It describes studies evaluating the utility of various imaging modalities for the diagnosis of fetal abnormalities, uterine and tubal pathology, and staging of gynecologic malignancies. In addition, the article reviews some experimental studies and their potential clinical applications.
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Affiliation(s)
- H Winer-Muram
- Clinical Radiology, Cornell University, New York, USA
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