Conservation of fresh ram spermatozoa at 5°C in the presence of seminal plasma

2003 ◽  
Vol 83 (2) ◽  
pp. 221-227 ◽  
Author(s):  
A. Morrier ◽  
F. Castonguay ◽  
J. L. Bailey
Keyword(s):  
Sperm Motility ◽  
Seminal Plasma ◽  
Artificial Insemination ◽  
Genital Tract ◽  
Female Genital Tract ◽  
Sperm Function ◽  
Oviduct Fluid ◽  
Ram Sperm ◽  
Female Genital

Seminal plasma aids sperm transport and contains factors beneficial for sperm function. In artificial insemination, however, diluting the semen reduces the concentration of seminal plasma. To test the hypothesis that supplemental seminal plasma in extended ram semen improves conservation at 5°C, we added various concentrations of seminal plasma to semen during storage, and investigated subsequent sperm function in vitro. Semen was divided into three aliquots, extended in a commercial diluent (Triladyl) supplemented with 0, 10 or 25% (vol:vol) ovine seminal plasma and cooled to 5°C. After 8 and 24 h at 5°C, sperm were suspended in a modified synthetic oviduct fluid (SOF-m) at 39°C to mimic the female genital tract at insemination. Sperm aliquots were assessed for motility and chlortetracycline fluorescence after 0, 4 and 8 h in the SOFm. No significant differences were observed due to seminal plasma supplementation during conservation at 5°C or incubation in SOF-m at 39°C. However, decreased sperm motility and fewer non-capacitated sperm were observed concomitant with an augmentation of capacitated and acrosome-reacted cells during incubation in SOF-m. Therefore, the hypothesis that diluent supplementation with homologous seminal plasma improves ram sperm conservation or subsequent sperm function was not supported. Key words: Ovine, ram, sperm, motility, viability, chlortetracycline fluorescence, artificial insemination, SOF

scholarly journals Seminal Plasma Modulates miRNA Expression by Sow Genital Tract Lining Explants

Biomolecules ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 933 ◽  
Author(s):  
Isabel Barranco ◽  
Lorena Padilla ◽  
Cristina A. Martinez ◽  
Manuel Alvarez-Rodriguez ◽  
Inmaculada Parrilla ◽  
...  
Keyword(s):  
Seminal Plasma ◽  
Genital Tract ◽  
Target Genes ◽  
Bioinformatics Analysis ◽  
Female Genital Tract ◽  
False Discovery ◽  
The Media ◽  
Mucosal Explants ◽  
Female Genital

The seminal plasma (SP) modulates the female reproductive immune environment after mating, and microRNAs (miRNAs) could participate in the process. Considering that the boar ejaculate is built by fractions differing in SP-composition, this study evaluated whether exposure of mucosal explants of the sow internal genital tract (uterus, utero-tubal junction and isthmus) to different SP-fractions changed the profile of explant-secreted miRNAs. Mucosal explants retrieved from oestrus sows (n = 3) were in vitro exposed to: Medium 199 (M199, Control) or M199 supplemented (1:40 v/v) with SP from the sperm-rich fraction (SRF), the post-SRF or the entire recomposed ejaculate, for 16 h. After, the explants were cultured in M199 for 24 h to finally collect the media for miRNA analyses using GeneChip miRNA 4.0 Array (Affymetrix). Fifteen differentially expressed (False Discovery Rate (FDR) < 0.05 and Fold-change ≥ 2) miRNAs (11 down- versus 4 up-regulated) were identified (the most in the media of uterine explants incubated with SP from post-SRF). Bioinformatics analysis identified that predicted target genes of dysregulated miRNAs, mainly miR-34b, miR-205, miR-4776-3p and miR-574-5p, were involved in functions and pathways related to immune response. In conclusion, SP is able to elicit changes in the miRNAs profile secreted by female genital tract, ultimately depending SP-composition.

Development of an in vitro dual-chamber model of the female genital tract as a screening tool for epithelial toxicity

2010 ◽  
Vol 165 (2) ◽  
pp. 186-197 ◽  
Author(s):  
Youssef Gali ◽  
Kevin K. Ariën ◽  
Marleen Praet ◽  
Rafael Van den Bergh ◽  
Marleen Temmerman ◽  
...  
Keyword(s):  
Genital Tract ◽  
Screening Tool ◽  
Female Genital Tract ◽  
Dual Chamber ◽  
Chamber Model ◽  
Female Genital

Development of an in vitro organ culture model to study transmission of HIV-1 in the female genital tract

10.1038/74743 ◽  
2000 ◽  
Vol 6 (4) ◽  
pp. 475-479 ◽  
Author(s):  
Kelly B. Collins ◽  
Bruce K. Patterson ◽  
Gregory J. Naus ◽  
Daniel V. Landers ◽  
Phalguni Gupta
Keyword(s):  
Organ Culture ◽  
Genital Tract ◽  
Female Genital Tract ◽  
Culture Model ◽  
In Vitro Organ Culture ◽  
Hiv 1 ◽  
Female Genital

scholarly journals Comparison of Female Genital Tract Cytokine and Microbiota Signatures Induced by Initiation of Intramuscular DMPA and NET-EN Hormonal Contraceptives - a Prospective Cohort Analysis

2021 ◽  
Vol 12 ◽  
Author(s):  
Smritee Dabee ◽  
Ramla F. Tanko ◽  
Bryan P. Brown ◽  
Rubina Bunjun ◽  
Christina Balle ◽  
...  
Keyword(s):  
High Risk ◽  
Genital Tract ◽  
Cohort Analysis ◽  
Female Genital Tract ◽  
Vaginal Microbiota ◽  
African Women ◽  
Hormonal Contraceptives ◽  
Rrna Gene ◽  
Female Genital

BackgroundCervicovaginal inflammation, bacterial microbiota and hormonal contraceptives all influence sexual and reproductive health. To date, the effects of intramuscular depo-medroxyprogesterone acetate (DMPA-IM) versus injectable norethisterone enanthate (NET-EN) on vaginal microbiota or cytokines have not been compared back-to-back, although in-vitro data suggest that DMPA-IM and NET-EN have different pharmacokinetic and biologic activities. This study aimed at comparing the effects of DMPA-IM versus NET-EN initiation on cervicovaginal cytokines and microbiota in women at high risk for sexually transmitted infections (STIs) assigned to the respective contraceptives.MethodsWe collected socio-demographic characteristics and vaginal samples from women initiating DMPA-IM (ECHO Trial; n = 53) and NET-EN (UChoose Trial; n = 44) at baseline and after two consecutive injections to assess cytokine concentrations by Luminex, vaginal microbiota by 16S rRNA gene sequencing, STIs, bacterial vaginosis (BV) and candidiasis.ResultsCytokine concentrations did not change significantly after initiating DMPA-IM or NET-EN, although NET-EN versus DMPA-IM-associated profiles were distinct. While the abundance of bacterial taxa associated with optimal and non-optimal microbiota fluctuated with DMPA-IM use, overall community composition did not significantly change with either contraceptive. HSV-2 serology, chlamydial infection, gonorrhoea and candidiasis did not influence the associations between contraceptive type and cervicovaginal cytokines or microbiota.ConclusionsBoth DMPA-IM and NET-EN use did not lead to broad inflammatory or microbiota changes in the female genital tract of sub-Saharan African women. This suggests that NET-EN is likely a viable option for contraception in African women at high risk of BV and STIs.

scholarly journals Immune Pathogenesis of Asymptomatic Chlamydia trachomatis Infections in the Female Genital Tract

1995 ◽  
Vol 3 (4) ◽  
pp. 169-174 ◽  
Author(s):  
Steven S. Witkin
Keyword(s):  
Chlamydia Trachomatis ◽  
Genital Tract ◽  
Pregnancy Loss ◽  
Early Stage ◽  
Female Genital Tract ◽  
In Vivo Studies ◽  
Fallopian Tubes ◽  
Female Genital

Chlamydia trachomatis (CT) infections of the female genital tract, although frequently asymptomatic, are a major cause of fallopian-tube occlusion and infertility. Early stage pregnancy loss may also be due to an unsuspected and undetected CT infection. In vitro and in vivo studies have demonstrated that this organism can persist in the female genital tract in a form undetectable by culture. The mechanism of tubal damage as well as the rejection of an embryo may involve an initial immune sensitization to the CT 60 kD heat shock protein (HSP), followed by a reactivation of HSP-sensitized lymphocytes in response to the human HSP and the subsequent release of inflammatory cytokines. The periodic induction of human HSP expression by various microorganisms or by noninfectious mechanisms in the fallopian tubes of women sensitized to the CT HSP may eventually result in tubal scarring and occlusion. Similarly, an immune response to human HSP expression during the early stages of pregnancy may interfere with the immune regulatory mechanisms required for the maintenance of a semiallogeneic embryo.

scholarly journals Ram seminal plasma and its functional proteomic assessment

Reproduction ◽  
2019 ◽  
Vol 157 (6) ◽  
pp. R243-R256 ◽  
Author(s):  
T Leahy ◽  
J P Rickard ◽  
N C Bernecic ◽  
X Druart ◽  
S P de Graaf
Keyword(s):  
Seminal Plasma ◽  
Plasma Proteins ◽  
Reproductive Tract ◽  
Reproductive Technologies ◽  
Female Reproductive Tract ◽  
Sperm Function ◽  
Seminal Plasma Proteins ◽  
Ram Sperm

Ejaculation results in the confluence of epididymal spermatozoa with secretions of the accessory sex glands. This interaction is not a prerequisite for fertilisation success, but seminal factors do play a crucial role in prolonging the survival of spermatozoa bothin vitroandin vivoby affording protection from handling induced stress and some selective mechanisms of the female reproductive tract. Reproductive biologists have long sought to identify specific factors in seminal plasma that influence sperm function and fertility in these contexts. Many seminal plasma proteins have been identified as diagnostic predictors of sperm function and have been isolated and appliedin vitroto prevent sperm damage associated with the application of artificial reproductive technologies. Proteomic assessment of the spermatozoon, and its surroundings, has provided considerable advances towards these goals and allowed for greater understanding of their physiological function. In this review, the importance of seminal plasma will be examined through a proteomic lens to provide comprehensive analysis of the ram seminal proteome and detail the use of proteomic studies that correlate seminal plasma proteins with ram sperm function and preservation ability.

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