Animal Reproduction (AR)
Animal Reproduction (AR)
Short Communication

Ultra-diluted Folliculinum 6 cH impairs ovine oocyte viability and maturation after in vitro culture

Kayse Najara Matos Damasceno; Naiza Arcângela Ribeiro de Sá; Gildas Mbemya Tetaping; Victor Macedo Paes; Laritza Ferreira de Lima; Antônio Carlos Duenhas Monreal; Francisca Geovânia Canafistula de Sousa; Bênner Geraldo Alves; José Ricardo de Figueiredo; Valdevane Rocha Araújo

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Abstract: This study investigated the effect of Folliculinum 6 cH on the oocyte meiosis resumption and viability rates, progesterone production and mitochondrial activity after in vitro maturation of cumulus-oocyte complexes (COCs) in sheep. Sheep ovaries were collected at a local slaughterhouse and COCs were recovered by slicing technique. The selected COCs were maturated in TCM199 (Control treatment), or control medium supplemented with 0.05% ethanol (v/v) (the vehicle of the homeopathic preparation – Ethanol treatment) or with Folliculinum 6 cH. After 24 h of in vitro maturation (IVM), oocytes were mechanically denuded and incubated with Hoechst 33342 and MitoTracker (0.5 μM) Orange CMTMRos for analysis of viability and chromatin configuration, and mitochondrial activity, respectively. The results showed that Folliculinum 6 cH addition increased oocyte degeneration and reduced meiotic resumption compared to the control (P < 0.05). Interestingly, the percentages meiotic resumption and oocyte maturation were lower in the Folliculinum 6 cH treatment compared to its vehicle (Ethanol treatment) (P < 0.05). On the other hand, when the treatments were compared, higher mitochondrial activity was observed in the Ethanol treatment (P < 0.05). In conclusion, contrary to its vehicle, the addition of Folliculinum 6 cH to the IVM medium promoted oocyte degeneration and affected negatively the mitochondrial distribution, impairing meiosis resumption.


culmulus-oocyte complex, homeopathy, in vitro maturation, sheep


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