[Experiences and successes with intravaginal fertilization and culture of human oocytes]

Other OA: closed public-domain-us
Full text JSON View on PubMed View at publisher
⚙ AI-generated summary by gemini-2.5-flash-lite, 2026-07-31 ⓘ

This study describes intravaginal culture of human oocytes, achieving a 58% fertilization rate and three clinical pregnancies in 15 patients treated for infertility.

One-sentence paraphrase of the abstract; not a substitute for reading it. No clinical advice. How this works

⚙ AI-generated deep summary by qwen3.7-flash, 2026-09-10 · read from full text ⓘ

This study evaluates the efficacy of intravaginal culture (IVC) for human oocytes, a modified in-vitro fertilization technique where up to four eggs and sperm are placed in a sealed capsule within the patient's vagina for up to 50 hours. Among the first fifteen patients treated, the method achieved a 58% fertilization rate, resulting in three clinical pregnancies, including two cases involving tubal sterility and one case involving endometriosis. The authors note that while preliminary, IVC offers advantages by minimizing gamete exposure to adverse environmental factors like light and temperature fluctuations, alongside psychological benefits from patient involvement. Relevance to endometriosis: listed as one indication for GnRH antagonists, though the paper's main focus is uterine fibroids.

Read from the paper's body, not the abstract. Not a substitute for reading the paper. No clinical advice. How this works

Abstract

We present in this study our first experience with intravaginal culture (IVC) of human oocytes as a modified technique for in-vitro fertilization. Up to 4 oocytes and washed, pre-incubated spermatozoa (final concentration: 0.1-0.2 x 10(5)/ml) are pipetted into a plastic capsule. The capsule is closed, avoiding any air inclusion. It is placed into the maternal vagina for up to 50 hours, held in place by a diaphragm. The first 15 patients treated by IVC achieved a fertilization rate of 58% (35/60). Following transfer of the cleavage stages, 3 intact clinical pregnancies were established: 2 in the group with tubal sterility factors and 1 in the group of patients with endometriosis. In the group with andrological causes of sterility, one beta-hCG-positive reaction was detected. However, no intact clinical pregnancy was achieved. Our preliminary results show IVC to be a promising alternative in particular cases of sterility treatment. In contrast to the conventional technique, IVC minimizes exposure of gametes to factors which may affect their early development, such as light or low temperature. Furthermore, there is an important psychological factor to be considered, as the patient actively participates in the incubation period of in-vitro fertilization.
Full text 3,141 characters · extracted from oa-doi-fallback · 2 sections · click to expand

Results

and Progress with Intravaginal Fertilization and Culture of Human OocytesPublication History Publication Date: 19 March 2008 (online) Zusammenfassung In dieser Studie berichten wir über die ersten eigenen Erfahrungen und Erfolge mit der intravaginalen Kultur (IVC) menschlicher Eizellen. Das Prinzip dieser Methode besteht darin, daß bis zu 4 Eizellen im Anschluß an die Follikelpunktion zusammen mit gewaschenen, vorinkubierten Spermatozoen (Endkonzentration: 0,1 - 0,2 × 105/ml) in eine Plastikkapsel gegeben werden. Diese Kapsel wird nach luftfreiem Verschluß in die Vagina der Patientin eingelegt und bis zu 50 h dort belassen. Ein Verlust der Kapsel wird durch ein Diaphragma verhindert. Bei den ersten 15 Patientinnen, die wir mit IVC behandelten, konnten wir so eine Befruchtungsrate von 58% (35/60) erzielen. Nach dem Transfer der Furchungsstadien wurden 3 intakte Schwangerschaften etabliert: 2 in der Gruppe mit tubarer Sterilität und 1 bei den Patientinnen, die aufgrund einer Endometriose in unser IVF-Programm aufgenommen wurden. In der Gruppe mit andrologischer Sterilitätsursache erfolgte bei einer Patientin ein β-hCG-Anstieg, jedoch wurde keine intakte Schwangerschaft etabliert. Diese vorläufigen Ergebnisse deuten darauf hin, daß die IVC eine vielversprechende Alternative in der Behandlung verschiedener Sterilitätsursachen darstellt. Im Gegensatz zum herkömmlichen Verfahren vermindert die IVC zudem die Exposition der Keimzellen gegenüber Faktoren, die sich nachteilig auf deren Entwicklung auswirken können, wie z. B. Licht und niedrige Umgebungstemperatur. Wichtig erscheint auch ein psychologischer Faktor, da die Patientin aktiv in den Vorgang der In-vitro-Fertilisation einbezogen wird.

Abstract

We present in this study our first experience with intravaginal culture (IVC) of human oocytes as a modified technique for in-vitro fertilization. Up to 4 oocytes and washed, pre-incubated spermatozoa (final concentration: 0.1 - 0.2 × 105/ml) are pipetted into a plastic capsule. The capsule is closed, avoiding any air inclusion. It is placed into the maternal vagina for up to 50 hours, held in place by a diaphragm. The first 15 patients treated by IVC achieved a fertilization rate of 58% (35/60). Following transfer of the cleavage stages, 3 intact clinical pregnancies were established: 2 in the group with tubal sterility factors and 1 in the group of patients with endometriosis. In the group with andrological causes of sterility, one β-hCG-positive reaction was detected. However, no intact clinical pregnancy was achieved. Our preliminary results show IVC to be a promising alternative in particular cases of sterility treatment. In contrast to the conventional technique, IVC minimizes exposure of gametes to factors which may affect their early development, such as light or low temperature. Furthermore, there is an important psychological factor to be considered, as the patient actively participates in the incubation period of in-vitro fertilization.

Text is read by the "Ask this paper" AI Q&A widget below. Extraction quality varies by source — PMC NXML preserves structure cleanly, OA-HTML may include some navigation residue, and OA-PDF can have broken hyphenation. The publisher copy (via DOI) is the canonical version.

My notes (saved in your browser only)

⚙ Ask this paper AI returns verbatim quotes from the full text · source: oa-doi-fallback ⓘ

Answers must be backed by verbatim quotes from this paper's full text. Hallucinated quotes are dropped automatically; if no verbatim passage answers the question, we say so. How this works

Condition tags

endometriosis

MeSH descriptors

Embryo Transfer Fertilization in Vitro Infertility, Female Embryo Transfer Embryo Transfer Female Female Fertilization in Vitro Fertilization in Vitro Follow-Up Studies Follow-Up Studies Humans Humans Infertility, Female Infertility, Female Pregnancy Pregnancy Vagina Vagina

Citation neighborhood (no data yet)

We don't have any in-corpus citations linked to this paper yet. The paper's references may be in our DB but unresolved to ``paper_id`` (resolution happens at ingest when the cited DOI matches a row we already have). Run the cross-source citation reconcile pass to retry.

Source provenance

europepmc
last seen: 2026-10-20T06:13:28.455750+00:00
pubmed
last seen: 2026-10-08T21:27:16.257658+00:00
unpaywall
last seen: 2026-10-20T06:27:24.728081+00:00
License: public-domain-us · commercial use OK · attribution required
Courtesy of the U.S. National Library of Medicine