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Embryonic Development and Differentiation: 2nd Edition

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Biology".

Deadline for manuscript submissions: 20 May 2025 | Viewed by 1921

Special Issue Editor


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Guest Editor
1. Department of Analytical Biochemistry, Institute of Biochemistry and Medical Chemistry, University of Pécs Medical School, 7624 Pécs, Hungary
2. National Human Reproduction Laboratory, University of Pécs, 7624 Pécs, Hungary
3. ELKH-PTE Human Reproduction Research Group, University of Pécs, 7624 Pécs, Hungary
Interests: mass spectrometry; imaging mass spectrometry; embryogenesis; cancer diagnosis; andrology; fertilization
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Special Issue Information

Dear Colleagues,

This is a continuation of the Special Issue “Embryonic Development and Differentiation”.

Human infertility is a global problem with significant social and economic impact. Successful pregnancy is a complex process comprising unique events, including fertilization, implantation, decidualization, placentation, and birth. Nowadays, assisted reproduction technologies (ARTs) have provided a remarkable impact on successful pregnancy after in vitro fertilization. However, these methods are associated with a relatively low clinical pregnancy rate of approximately 30% per transfer. The uterus’s receptive phase is marked by the endometrium’s structural and functional maturation. This is a limited time span when the blastocyst competency is superimposed on the receptive endometrium. It is well-known that the lipid and protein metabolism and signaling of early-stage pregnancy are vital in successful embryogenesis. However, embryo–maternal molecular communication is poorly understood, nor is it understood whether IVF’s low take-home baby outcome results from some abnormal molecular networking.

This Special Issue calls for original articles and reviews that will provide the readers of IJMS with a comprehensive elucidation of fertilization, embryonic development, and molecular networking during embryogenesis.

Dr. László Márk
Guest Editor

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Keywords

  • blastocyte
  • embryogenesis
  • endometrium
  • implantation
  • in vitro fertilization (IFV)
  • ICSI
  • oocyte
  • pregnancy
  • seminal plasma
  • sperm

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Published Papers (2 papers)

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Research

11 pages, 2271 KiB  
Article
Investigation of Phosphatidylcholine by MALDI Imaging Mass Spectrometry in Normal and IVF Early-Stage Embryos
by Stefánia Gitta, Éva Szabó, Alexandra Sulc, Péter Czétány, Gábor Máté, András Balló, Tímea Csabai, Árpád Szántó and László Márk
Int. J. Mol. Sci. 2024, 25(13), 7423; https://doi.org/10.3390/ijms25137423 - 6 Jul 2024
Viewed by 887
Abstract
The receptive phase of the uterus is marked by structural and functional maturation of the endometrium. During this limited time span, the blastocyst competency is superimposed on the receptive endometrium. It is a well-known fact that lipid signalling in early-stage pregnancy has a [...] Read more.
The receptive phase of the uterus is marked by structural and functional maturation of the endometrium. During this limited time span, the blastocyst competency is superimposed on the receptive endometrium. It is a well-known fact that lipid signalling in early-stage pregnancy has a crucial role in successful embryogenesis. In our study, CD-1 mouse uteri after normal and in vitro fertilization (IVF) were investigated at 6.5, 8.5, and 10.5 days of pregnancy. Matrix-assisted laser desorption/ionization time-of-flight imaging mass spectrometry and liquid chromatography coupled tandem mass spectrometry were used for identification of phosphatidylcholine (PC) lipid structures. In the embryonal tissues, PC 32:0 and PC 34:0 were increased, while in the antemesometrial (AM) decidua the two 20:4-containing PCs, PC 36:4 and PC 38:4 were increased. In transferred uterus samples, higher expressions of PC 34:0, PC 34:1, PC 34:2, PC 36:1, and PC 36:2 in mesometrial decidua were seen, whereas the two 20:4-containing PCs, PC 36:4 and PC 38:4 showed increased expression in the AM and lateral decidua. This paper shows a significant spatio-temporal change in lipid metabolism during IVF procedures for the first time. Full article
(This article belongs to the Special Issue Embryonic Development and Differentiation: 2nd Edition)
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13 pages, 4687 KiB  
Article
Arginine Vasotocin Directly Regulates Spermatogenesis in Adult Zebrafish (Danio rerio) Testes
by Maya Zanardini, Weimin Zhang and Hamid R. Habibi
Int. J. Mol. Sci. 2024, 25(12), 6564; https://doi.org/10.3390/ijms25126564 - 14 Jun 2024
Viewed by 775
Abstract
The neuropeptide vasopressin is known for its regulation of osmotic balance in mammals. Arginine vasotocin (AVT) is a non-mammalian homolog of this neuropeptide that is present in fish. Limited information suggested that vasopressin and its homologs may also influence reproductive function. In the [...] Read more.
The neuropeptide vasopressin is known for its regulation of osmotic balance in mammals. Arginine vasotocin (AVT) is a non-mammalian homolog of this neuropeptide that is present in fish. Limited information suggested that vasopressin and its homologs may also influence reproductive function. In the present study, we investigated the direct effect of AVT on spermatogenesis, using zebrafish as a model organism. Results demonstrate that AVT and its receptors (avpr1aa, avpr2aa, avpr1ab, avpr2ab, and avpr2l) are expressed in the zebrafish brain and testes. The direct action of AVT on spermatogenesis was investigated using an ex vivo culture of mature zebrafish testes for 7 days. Using histological, morphometric, and biochemical approaches, we observed direct actions of AVT on zebrafish testicular function. AVT treatment directly increased the number of spermatozoa in an androgen-dependent manner, while reducing mitotic cells and the proliferation activity of type B spermatogonia. The observed stimulatory action of AVT on spermiogenesis was blocked by flutamide, an androgen receptor antagonist. The present results support the novel hypothesis that AVT stimulates short-term androgen-dependent spermiogenesis. However, its prolonged presence may lead to diminished spermatogenesis by reducing the proliferation of spermatogonia B, resulting in a diminished turnover of spermatogonia, spermatids, and spermatozoa. The overall findings offer an insight into the physiological significance of vasopressin and its homologs in vertebrates as a contributing factor in the multifactorial regulation of male reproduction. Full article
(This article belongs to the Special Issue Embryonic Development and Differentiation: 2nd Edition)
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