Effect of different photoperiods and melatonin treatment on rabbit reproductive performance

Mousa-Balabel, T. M.; Mohamed, Radi A.

doi:10.1080/01652176.2011.642533

Cited by 25 publications

(16 citation statements)

References 18 publications

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“…). This is very unlikely given that all female rabbits used in the present study were in proestrus according to light/dark conditions (Mousa‐Balabel and Mohamed ). As the proliferation of oviductal epithelium was slightly affected by hypothyroidism, it could be possible that enlarged epithelial cells are linked to metabolic alterations.…”

Section: Discussionmentioning

confidence: 96%

“…Such discrepancy can be explained by considering that: (i) thyroidectomy produces the complete depletion of thyroid hormones, while the pharmacologically induced hypothyroidism evokes a partial reduction of thyroid hormones; (ii) the possibility that hypocalcaemia, as a common consequence of thyroidectomy, could affect the normal function of several tissues (Sawers et al. ); (iii) in contrast to rats, rabbits can stay in an stable early proestrus by light/dark cycle regulation (Mousa‐Balabel and Mohamed ); and/or (iv) an inadequate regionalization or sampling of oviductal regions, including transitional zones, that could misled precise interpretations as previously proposed (Pedrero‐Badillo et al. ).…”

Section: Discussionmentioning

confidence: 99%

“…Rabbits were housed in individual stainless steel cages and kept at 20 ± 2°C room temperature under artificial lighting conditions (16 : 8 h light: dark; lights on at 06 : 00). These latter conditions were showed to be useful for maintaining rabbits in oestrous elsewhere (Mousa‐Balabel and Mohamed ). Female rabbits were fed with 120 g of pellet chow (Conejina, Purina) every day and had continuous access to water.…”

Section: Methodsmentioning

confidence: 99%

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Hypothyroidism Affects Differentially the Cell Size of Epithelial Cells Among Oviductal Regions of Rabbits

Anaya-Hernández

Rodríguez-Castelán

Nicolás

et al. 2014

Reprod Domestic Animals

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Oviductal regions show particular histological characteristics and functions. Tubal pathologies and hypothyroidism are related to primary and secondary infertility. The impact of hypothyroidism on the histological characteristics of oviductal regions has been scarcely studied. Our aim was to analyse the histological characteristics of oviductal regions in control and hypothyroid rabbits. Hypothyroidism was induced by oral administration of methimazole (MMI) for 30 days. For both groups, serum concentrations of thyroid and gonadal hormones were determined. Sections of oviductal regions were stained with the Masson's trichrome technique to analyse both epithelial and smooth muscle layers. The percentage of proliferative epithelial cells (anti-Ki67) in diverse oviductal regions was also quantified. Data were compared with Student t-test, Mann-Whitney U-test, or Fischer's test. In comparison with the control group, the hypothyroid group showed: (i) a low concentration of T3 and T4, but a high level of TSH; (ii) similar values of serum estradiol, progesterone and testosterone; (iii) a large size of ciliated cells in the ampulla (AMP), isthmus (IST) and utero-tubal junction (UTJ); (iv) a large size of secretory cells in the IST region; (v) a low percentage of proliferative secretory cells in the fimbria-infundibulum (FIM-INF) region; and (vi) a similar thickness of the smooth muscle layer and the cross-sectional area in the AMP and IST regions. Modifications in the size of the oviductal epithelium in hypothyroid rabbits could be related to changes in the cell metabolism that may impact on the reproductive functions achieved by oviduct.

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Hypothyroidism Affects Differentially the Cell Size of Epithelial Cells Among Oviductal Regions of Rabbits

Anaya-Hernández

Rodríguez-Castelán

Nicolás

et al. 2014

Reprod Domestic Animals

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“…The reproductive ability and the semen quality of animal species can be affected by many environmental sources, as well as age, stress, hormonal status, nutrition and toxins (Mangelsdorf et al 2003, Lukac et al 2011, Mousa-Balabel and Mohamed 2011, Fallas-López et al 2011, Tirpak et al 2017, Saha et al 2019. In the many years, following the increased success rate of cancer treatments, great efforts have been made to improve quality of life in survivors, including fertility preservation in young patients (Masopotova et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Time and Dose-Dependent Effects of Viscum Album Quercus on Rabbit Spermatozoa Motility and Viability in Vitro

Halo

Massányi²,

Greń³

et al. 2019

Physiol Res

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The target of this study was to evaluate the effect of extract of the European mistletoe -Viscum album quercus L. on spermatozoa motility and viability in vitro. The CASA system was used to determine the spermatozoa motility parameters at different time intervals (0, 1, 2 and 3 h) and spermatozoa viability was determined in five different doses of Viscum album quercus L [10 (QA), 6.6 (QB), 3.3 (QC), 2.5 (QD) and 2 (QE) mg/ml]. Results in experimental groups detected a significant deterioration on rabbit spermatozoa after 1, 2 and 3 hours, compared to the control. The initial total spermatozoa motility showed increased value for all doses of Viscum album quercus in comparison to control. After in vitro culture a dose-dependent decrease (QA: reduction of 69.7 %, QB: reduction of 40.9 %) was found. For the progressive spermatozoa most significant decrease (86.8 % for QA vs. 48.5 % for QB) was detected compared to the control after 3 hours of culture. Spermatozoa viability (MTT test) was decreased in all experiment groups at the end of experiment, but the differences were not significant.Significant alterations of membrane integrity were found in groups with the highest Viscum album quercus concentration (QA, QB), but acrosome integrity showed no significant changes. Results suggest negative dose-and time-dependent effect ofViscum album quercus at higher doses on spermatozoa motility and viability parameters in vitro.

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“…This hormone also affects sexual maturation and sperm motility in humans. In rabbits, treatment with melatonin has been reported to improve the quantity and quality of ejaculate traits and buck sexual activity, as well as sexual receptivity in does . Thus, deficient melatonin production could be related to impaired sexual activity, particularly in psychogenic impotence …”

Section: Introductionmentioning

confidence: 99%

Relationship between plasma melatonin levels and the efficacy of selective serotonin reuptake inhibitors treatment on premature ejaculation

et al. 2014

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Abbreviations & AcronymsObjectives: To examine the relationship between premature ejaculation and plasma melatonin levels, and assess the efficacy of selective serotonin reuptake inhibitors in treating premature ejaculation. Methods: A total of 60 men with lifelong premature ejaculation and 40 healthy male controls were included in the present study. For each participant, a medical history was obtained, a physical examination was carried out, and intravaginal ejaculation latency time and melatonin levels were measured. Premature ejaculation patients were randomly categorized into three treatment groups: group 1 received fluoxetine (20 mg/day), group 2 received paroxetine (20 mg/day) and group 3 received sertraline (50 mg/day). Results: The mean baseline plasma melatonin levels in men with premature ejaculation were significantly lower than in the healthy controls (5.34 vs 14.84 pg/mL). After 4 weeks of treatment, the mean intravaginal ejaculation latency time scores for all of the premature ejaculation treatment groups showed a significant improvement from the baseline values. The plasma melatonin levels were also significantly increased (P < 0.05) from baseline (5.34 pg/mL) to 9.50 pg/mL, 10.24 pg/mL or 13.30 pg/mL for groups 1, 2 and 3, respectively. Conclusions: Our findings show that premature ejaculation is associated with decreased plasma melatonin levels. After treatment with selective serotonin reuptake inhibitors, an increased plasma melatonin level can retard ejaculation, presumably by both central and peripheral mechanisms. This is the first study to evaluate the possible role of serotoninergic interactions on the melatoninergic system in premature ejaculation.

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Effect of different photoperiods and melatonin treatment on rabbit reproductive performance

Cited by 25 publications

References 18 publications

Hypothyroidism Affects Differentially the Cell Size of Epithelial Cells Among Oviductal Regions of Rabbits

Hypothyroidism Affects Differentially the Cell Size of Epithelial Cells Among Oviductal Regions of Rabbits

Time and Dose-Dependent Effects of Viscum Album Quercus on Rabbit Spermatozoa Motility and Viability in Vitro

Relationship between plasma melatonin levels and the efficacy of selective serotonin reuptake inhibitors treatment on premature ejaculation

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