ORGANISATION/COMPANYSlovak University of Agriculture in Nitra
RESEARCH FIELDBiological sciences
RESEARCHER PROFILERecognised Researcher (R2)Established Researcher (R3)
APPLICATION DEADLINE31/07/2021 23:00 - Europe/Brussels
LOCATIONSlovakia › Nitra
TYPE OF CONTRACTTemporary
HOURS PER WEEK37,5
Rector of SUA opens a call for the research postdoctoral post.
Eligible applicants for the postdoctoral post are persons who have completed PhD. study at the university or research institution no later than five years before starting postdoctoral post.
Application deadline: 31/07/2021
Offer starting date: 01/09/2021 or negotiable
Employment contract: 1 year with the possibility of extension to 3 years
Applicants for this post must professionally profile themselves to the topic of the postdoctoral post:
Mechanisms of the impact of bacteriospermia on the structural, functional and capacitation parameters of cryopreserved spermatozoa
Links to research project:
NUKLEUS 313011V387 – prof. Ing. Norbert Lukáč, PhD.
VEGA 1/0239/20 – Ing. Eva Tvrdá, PhD.
Topic leader: prof. Ing. Norbert Lukáč, PhD.
Contact: Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, e-mail: firstname.lastname@example.org
A variety of studies have reported that bacterial contamination of ejaculates (bacteriospermia) could contribute to the loss of sperm motility, morphological alterations, acrosome dysfunction and oxidative damage to male gametes. While bacteriospermia may be expected in males suffering from a urinary tract infection, little to no information is available with respect to the presence and/or impact of bacteria on the quality of semen collected from clinically healthy subjects. Also, other bacterial species responsible for the colonization of the male urogenital tract, rather than the actual infection, could also contribute to a decreased sperm quality. Bacterial contamination of semen samples may be additionally caused using low-quality semen extenders or faults throughout the process of semen processing. Supplementation of antibiotics is a popular option in artificial reproductive techniques (ARTs), however it is necessary to keep in mind their disadvantages, such as the ever-increasing bacterial resistance, relatively high costs and their possible toxic effects on the functional activity of the male reproductive cell. Recent studies suggest that natural biomolecules may exhibit beneficial and protective effects on the metabolic activity and reproductive traits of males. Flavonoids or polyphenols may contribute to the reversal of structural or functional damage to male gametes associated with bacteriospermia. As such, systematic screening of natural extracts represents a continuous effort of many laboratories to find new compounds with the potential to replace antibiotics in animal andrology.
Objectives of the topic:
Based on the fact that bacterial contamination of ejaculates is a critical, yet an underestimated factor contributing to low semen quality, the proposed project aims to:
(a) isolate, identify and characterize bacteria isolated from semen samples collected from healthy stud animals, and to interrelate their presence with a vast array of semen quality parameters;
(b) assess the efficiency of commercially available semen extenders to prevent potential bacterial contamination;
(c) induce bacteriospermia in vitro using bacteria previously isolated from the corresponding semen samples in order to study their exact impact on specific structures crucial for the sperm survival and function;
(d) evaluate the ability of selected antibiotics and natural biomolecules to prevent or reverse bacteriospermia in vitro.
Description of the professional content of the postdoctoral post:
Professional specification: isolation, identification and characterizing bacteria isolated from semen samples collected from healthy stud animals, and to interrelate their presence with a vast array of semen quality parameters; assess the efficiency of commercially available semen extenders to prevent potential bacterial contamination; induce bacteriospermia in vitro using bacteria previously isolated from the corresponding semen samples in order to study their exact impact on specific structures crucial for the sperm survival and function; evaluate the ability of selected antibiotics and natural biomolecules to prevent or reverse bacteriospermia in vitro.
Methodological knowledge required: microscopy (optical, phase contrast), fluorescence microscopy, CASA systems, MALDI system, fluorometry, spectrometry, luminometry, in vitro processing.
Other requirements: good knowledge of English, knowledge of working with PC, experience in preparing and writing scientific papers in peer-reviewed scientific journals, moral integrity and good work ethic.
In the first round, selection committee appointed by the Rector will assess submitted applications in accordance with required conditions and documents defined in this call. Applicants who have not met defined requirements of this call do not advance to the second round.
The second round means interview in Slovak or English. Applicants will present their vision, research proposal and professional suitability with the post offered in the maximum 10-minute presentation. Presentation will be in the form of guided interview between the applicants and members of the selection committee.
Selection committee will determine the overall ranking of applicants. The final decision on selection process will be issued by the Rector of the University.
Application for the postdoctoral post includes the following documents submitted in Slovak or English:
- Written request to apply for this post
- Letter of motivation
- Project proposal
- CV emphasising scientific research activities relevant to the topic
- Basic scientometric indicators of the applicant (list of publications with emphasis on works indexed in WOS and SCOPUS and journal works, overview of citations, patent activity, transfer of knowledge into practice, studio/atelier activities)
- List of research grants/projects and brief description of the most significant results achieved
- List of completed internships (advantage)
- 1 letter of recommendation
- Other information, if any, illustrating the applicant's professional profile
- Certified copies of diplomas of the second and third degree studies (master and PhD.)
- Certified copy of an extract from the judicial record not older than 3 months
How to apply:
Send your application by mail to
Reference number: UP-2021-33
Slovak University of Agriculture in Nitra
Human Resources Unit
Tr. A. Hlinku 2
949 76 Nitra
Additional admin info: email@example.com
Additional research info: firstname.lastname@example.org
EURAXESS offer ID: 645599
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