scholarly journals Sperm‐Driven Micromotors Moving in Oviduct Fluid and Viscoelastic Media

Small ◽  
2020 ◽  
Vol 16 (24) ◽  
pp. 2000213 ◽  
Author(s):  
Friedrich Striggow ◽  
Mariana Medina‐Sánchez ◽  
Günter K. Auernhammer ◽  
Veronika Magdanz ◽  
Benjamin M. Friedrich ◽  
...  
Keyword(s):  
Viscoelastic Media ◽  
Oviduct Fluid

Computer simulations of a viscoelastic media heating by standing cylindrical ultrasound waves

2020 ◽  
Vol 561 (1) ◽  
pp. 65-68
Author(s):  
S. A. Shcherbinin ◽  
E. I. Petrova ◽  
N. A. Kolpacheva ◽  
A. N. Reznichenko ◽  
A. N. Rybyanets
Keyword(s):  
Computer Simulations ◽  
Ultrasound Waves ◽  
Viscoelastic Media

Expression of hyaluronan synthase-3 in porcine oviducal epithelium during oestrus

2003 ◽  
Vol 15 (2) ◽  
pp. 99 ◽  
Author(s):  
Paisan Tienthai ◽  
Naoko Kimura ◽  
Paraskevi Heldin ◽  
Eimei Sato ◽  
Heriberto Rodriguez-Martinez
Keyword(s):  
Polymerase Chain Reaction ◽  
Reverse Transcription ◽  
Hyaluronan Synthase ◽  
Critical Periods ◽  
Rt Pcr ◽  
Chain Reaction ◽  
Mean Values ◽  
Polymerase Chain ◽  
Sperm Reservoir ◽  
Oviduct Fluid

Hyaluronan (HA) has been related to fertilization and embryo development in the pig. Furthermore, HA is present in pig oviduct fluid and the lining epithelium, particularly of the pre-ovulatory sperm reservoir. Because the mechanisms that regulate HA synthesis have not yet been clarified, semiquantitative reverse transcription-polymerase chain reaction (RT-PCR) was conducted to assess the expression of mRNAs of two HA-synthesizing enzymes (has2 and has3) in the oviduct epithelium (uterotubal junction, isthmus, ampullary–isthmic junction and ampulla segments) of non-inseminated (control) and inseminated (treatment) sows at pre-, peri- and post-ovulatory oestrus. Only has3 mRNA was detected; it was present in all tubal segments of both control and treatment samples. The level of has3 expression did not vary significantly between non-inseminated and inseminated specimens, but there was a tendency (NS) for increased mean values during the peri- and post-ovulatory stages compared with pre-ovulation. It is concluded that has3 is expressed by the porcine endosalpinx epithelium and the levels of expression do not vary during the critical periods of sperm transport and fertilization, despite fluctuating levels of HA in the tubal fluid at corresponding periods.

scholarly journals Theory of Swimming Filaments in Viscoelastic Media

2007 ◽  
Vol 99 (25) ◽  
Author(s):  
Henry C. Fu ◽  
Thomas R. Powers ◽  
Charles W. Wolgemuth
Keyword(s):  
Viscoelastic Media
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