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Shankhwar V, Urvec J, Steuber B, Schmid Zalaudek K, Salon A, Hawliczek A, Bergauer A, Aljasmi K, Abdi A, Naser A, Himeidi M, Alsuwaidi H, Du Plessis S, Alsheikh-Ali A, Kellett C, Bayoumi R, Blaber AP, Goswami N. Effects of menstrual cycle on hemodynamic and autonomic responses to central hypovolemia. Front Cardiovasc Med 2024; 11:1290703. [PMID: 38361585 PMCID: PMC10867210 DOI: 10.3389/fcvm.2024.1290703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 01/17/2024] [Indexed: 02/17/2024] Open
Abstract
Background Estrogen and progesterone levels undergo changes throughout the menstrual cycle. Existing literature regarding the effect of menstrual phases on cardiovascular and autonomic regulation during central hypovolemia is contradictory. Aims and study This study aims to explore the influence of menstrual phases on cardiovascular and autonomic responses in both resting and during the central hypovolemia induced by lower body negative pressure (LBNP). This is a companion paper, in which data across the menstrual phases from healthy young females, whose results are reported in Shankwar et al. (2023), were further analysed. Methods The study protocol consisted of three phases: (1) 30 min of supine rest; (2) 16 min of four LBNP levels; and (3) 5 min of supine recovery. Hemodynamic and autonomic responses (assessed via heart rate variability, HRV) were measured before-, during-, and after-LBNP application using Task Force Monitor® (CNSystems, Graz, Austria). Blood was also collected to measure estrogen and progesterone levels. Results In this companion paper, we have exclusively assessed 14 females from the previous study (Shankwar et al., 2023): 8 in the follicular phase of the menstrual cycle (mean age 23.38 ± 3.58 years, height 166.00 ± 5.78 cm, weight 57.63 ± 5.39 kg and BMI of 20.92 ± 1.96 25 kg/m2) and 6 in the luteal phase (mean age 22.17 ± 1.33 years, height 169.83 ± 5.53 cm, weight 62.00 ± 7.54 kg and BMI of 21.45 ± 2.63 kg/m2). Baseline estrogen levels were significantly different from the follicular phase as compared to the luteal phase: (33.59 pg/ml, 108.02 pg/ml, respectively, p < 0.01). Resting hemodynamic variables showed no difference across the menstrual phases. However, females in the follicular phase showed significantly lower resting values of low-frequency (LF) band power (41.38 ± 11.75 n.u. and 58.47 ± 14.37 n.u., p = 0.01), but higher resting values of high frequency (HF) band power (58.62 ± 11.75 n.u. and 41.53 ± 14.37 n.u., p = 0.01), as compared to females in the luteal phase. During hypovolemia, the LF and HF band powers changed only in the follicular phase F(1, 7) = 77.34, p < 0.0001 and F(1, 7) = 520.06, p < 0.0001, respectively. Conclusions The menstrual phase had an influence on resting autonomic variables, with higher sympathetic activity being observed during the luteal phase. Central hypovolemia leads to increased cardiovascular and autonomic responses, particularly during the luteal phase of the menstrual cycle, likely due to higher estrogen levels and increased sympathetic activity.
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Affiliation(s)
- Vishwajeet Shankhwar
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Janez Urvec
- Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia
| | - Bianca Steuber
- Division of Physiology, Otto Löwi Research Center of Vascular Biology, Immunity and Inflammation, Medical University of Graz, Graz, Austria
| | - Karin Schmid Zalaudek
- Division of Physiology, Otto Löwi Research Center of Vascular Biology, Immunity and Inflammation, Medical University of Graz, Graz, Austria
| | - Adam Salon
- Division of Physiology, Otto Löwi Research Center of Vascular Biology, Immunity and Inflammation, Medical University of Graz, Graz, Austria
- Faculty of Health and Social Sciences, Inland Norway University of Applied Sciences, Lillehammer, Norway
| | - Anna Hawliczek
- Division of Physiology, Otto Löwi Research Center of Vascular Biology, Immunity and Inflammation, Medical University of Graz, Graz, Austria
| | - Andrej Bergauer
- Department of Surgery, General Hospital (LKH) Südsteiermark, Wagna, Austria
| | - Khawla Aljasmi
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Asrar Abdi
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Asmaa Naser
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Maya Himeidi
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Hanan Alsuwaidi
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Stefan Du Plessis
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Alawi Alsheikh-Ali
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Catherine Kellett
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Riad Bayoumi
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Andrew Phillip Blaber
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
| | - Nandu Goswami
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
- Division of Physiology, Otto Löwi Research Center of Vascular Biology, Immunity and Inflammation, Medical University of Graz, Graz, Austria
- Department of Integrative Medicine, Alma Mater Europea, Maribor, Slovenia
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Saloň A, Vladic N, Schmid-Zalaudek K, Steuber B, Hawliczek A, Urevc J, Bergauer A, Pivec V, Shankhwar V, Goswami N. Sex Variations in Retinal Microcirculation Response to Lower Body Negative Pressure. Biology (Basel) 2023; 12:1224. [PMID: 37759623 PMCID: PMC10525942 DOI: 10.3390/biology12091224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/06/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023]
Abstract
INTRODUCTION Lower body negative pressure (LBNP) is routinely used to induce central hypovolemia. LBNP leads to a shift in blood to the lower extremities. While the effects of LBNP on physiological responses and large arteries have been widely reported, there is almost no literature regarding how these cephalad fluid shifts affect the microvasculature. The present study evaluated the changes in retinal microcirculation parameters induced by LBNP in both males and females. METHODOLOGY Forty-four participants were recruited for the present study. The retinal measurements were performed at six time points during the LBNP protocol. To prevent the development of cardiovascular collapse (syncope) in the healthy participants, graded LBNP until a maximum of -40 mmHg was applied. A non-mydriatic, hand-held Optomed Aurora retinal camera was used to capture the retinal images. MONA Reva software (version 2.1.1) was used to analyze the central retinal arterial and venous diameter changes during the LBNP application. Repeated measures ANOVAs, including sex as the between-subjects factor and the grade of the LBNP as the within-subjects factor, were performed. RESULTS No significant changes in retinal microcirculation were observed between the evaluated time points or across the sexes. CONCLUSIONS Graded LBNP application did not lead to changes in the retinal microvasculature across the sexes. The present study is the first in the given area that attempted to capture the changes in retinal microcirculation caused by central hypovolemia during LBNP. However, further research is needed with higher LBNP levels, including those that can induce pre-fainting (presyncope), to fully understand how retinal microcirculation adapts during complete cardiovascular collapse (e.g., during hypovolemic shock) and/or during severe hemorrhage.
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Affiliation(s)
- Adam Saloň
- Division of Physiology & Pathophysiology, Otto Loewi Research Center, Medical University of Graz, 8010 Graz, Austria (K.S.-Z.)
- Faculty of Health and Social Sciences, Inland Norway University of Applied Sciences, 2624 Lillehammer, Norway
| | - Nikola Vladic
- Division of Physiology & Pathophysiology, Otto Loewi Research Center, Medical University of Graz, 8010 Graz, Austria (K.S.-Z.)
- College of Medicine, Medical University of Rijeka, 51000 Rijeka, Croatia
| | - Karin Schmid-Zalaudek
- Division of Physiology & Pathophysiology, Otto Loewi Research Center, Medical University of Graz, 8010 Graz, Austria (K.S.-Z.)
| | - Bianca Steuber
- Division of Physiology & Pathophysiology, Otto Loewi Research Center, Medical University of Graz, 8010 Graz, Austria (K.S.-Z.)
| | - Anna Hawliczek
- Division of Physiology & Pathophysiology, Otto Loewi Research Center, Medical University of Graz, 8010 Graz, Austria (K.S.-Z.)
| | - Janez Urevc
- Faculty of Mechanical Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia
| | | | - Vid Pivec
- Clinical Department for General and Abdominal Surgery, University Clinical Centre Maribor, 2000 Maribor, Slovenia
| | - Vishwajeet Shankhwar
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai P.O. Box 505055, United Arab Emirates
| | - Nandu Goswami
- Division of Physiology & Pathophysiology, Otto Loewi Research Center, Medical University of Graz, 8010 Graz, Austria (K.S.-Z.)
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai P.O. Box 505055, United Arab Emirates
- Department of Integrative Health, Alma Mater Europaea Maribor, 2000 Maribor, Slovenia
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Hawliczek A, Borzęcka E, Tofil K, Alachiotis N, Bolibok L, Gawroński P, Siekmann D, Hackauf B, Dušinský R, Švec M, Bolibok-Brągoszewska H. Selective sweeps identification in distinct groups of cultivated rye (Secale cereale L.) germplasm provides potential candidate genes for crop improvement. BMC Plant Biol 2023; 23:323. [PMID: 37328739 PMCID: PMC10273710 DOI: 10.1186/s12870-023-04337-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Accepted: 06/07/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND During domestication and subsequent improvement plants were subjected to intensive positive selection for desirable traits. Identification of selection targets is important with respect to the future targeted broadening of diversity in breeding programmes. Rye (Secale cereale L.) is a cereal that is closely related to wheat, and it is an important crop in Central, Eastern and Northern Europe. The aim of the study was (i) to identify diverse groups of rye accessions based on high-density, genome-wide analysis of genetic diversity within a set of 478 rye accessions, covering a full spectrum of diversity within the genus, from wild accessions to inbred lines used in hybrid breeding, and (ii) to identify selective sweeps in the established groups of cultivated rye germplasm and putative candidate genes targeted by selection. RESULTS Population structure and genetic diversity analyses based on high-quality SNP (DArTseq) markers revealed the presence of three complexes in the Secale genus: S. sylvestre, S. strictum and S. cereale/vavilovii, a relatively narrow diversity of S. sylvestre, very high diversity of S. strictum, and signatures of strong positive selection in S. vavilovii. Within cultivated ryes we detected the presence of genetic clusters and the influence of improvement status on the clustering. Rye landraces represent a reservoir of variation for breeding, and especially a distinct group of landraces from Turkey should be of special interest as a source of untapped variation. Selective sweep detection in cultivated accessions identified 133 outlier positions within 13 sweep regions and 170 putative candidate genes related, among others, to response to various environmental stimuli (such as pathogens, drought, cold), plant fertility and reproduction (pollen sperm cell differentiation, pollen maturation, pollen tube growth), and plant growth and biomass production. CONCLUSIONS Our study provides valuable information for efficient management of rye germplasm collections, which can help to ensure proper safeguarding of their genetic potential and provides numerous novel candidate genes targeted by selection in cultivated rye for further functional characterisation and allelic diversity studies.
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Affiliation(s)
- Anna Hawliczek
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw, University of Life Sciences-SGGW, Warsaw, Poland
| | - Ewa Borzęcka
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw, University of Life Sciences-SGGW, Warsaw, Poland
| | - Katarzyna Tofil
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw, University of Life Sciences-SGGW, Warsaw, Poland
| | - Nikolaos Alachiotis
- Faculty of Electrical Engineering, Mathematics and Computer Science, University of Twente, Enschede, The Netherlands
| | - Leszek Bolibok
- Department of Silviculture, Institute of Forest Sciences, Warsaw University of Life Sciences-SGGW, Warsaw, Poland
| | - Piotr Gawroński
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw, University of Life Sciences-SGGW, Warsaw, Poland
| | | | | | - Roman Dušinský
- Department of Botany, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
| | - Miroslav Švec
- Department of Botany, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
| | - Hanna Bolibok-Brągoszewska
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw, University of Life Sciences-SGGW, Warsaw, Poland.
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Hawliczek A, Bolibok L, Tofil K, Borzęcka E, Jankowicz-Cieślak J, Gawroński P, Kral A, Till BJ, Bolibok-Brągoszewska H. Deep sampling and pooled amplicon sequencing reveals hidden genic variation in heterogeneous rye accessions. BMC Genomics 2020; 21:845. [PMID: 33256606 PMCID: PMC7706248 DOI: 10.1186/s12864-020-07240-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 11/18/2020] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Loss of genetic variation negatively impacts breeding efforts and food security. Genebanks house over 7 million accessions representing vast allelic diversity that is a resource for sustainable breeding. Discovery of DNA variations is an important step in the efficient use of these resources. While technologies have improved and costs dropped, it remains impractical to consider resequencing millions of accessions. Candidate genes are known for most agronomic traits, providing a list of high priority targets. Heterogeneity in seed stocks means that multiple samples from an accession need to be evaluated to recover available alleles. To address this we developed a pooled amplicon sequencing approach and applied it to the out-crossing cereal rye (Secale cereale L.). RESULTS Using the amplicon sequencing approach 95 rye accessions of different improvement status and worldwide origin, each represented by a pooled sample comprising DNA of 96 individual plants, were evaluated for sequence variation in six candidate genes with significant functions on biotic and abiotic stress resistance, and seed quality. Seventy-four predicted deleterious variants were identified using multiple algorithms. Rare variants were recovered including those found only in a low percentage of seed. CONCLUSIONS We conclude that this approach provides a rapid and flexible method for evaluating stock heterogeneity, probing allele diversity, and recovering previously hidden variation. A large extent of within-population heterogeneity revealed in the study provides an important point for consideration during rye germplasm conservation and utilization efforts.
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Affiliation(s)
- Anna Hawliczek
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - Leszek Bolibok
- Department of Silviculture, Institute of Forest Sciences, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - Katarzyna Tofil
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - Ewa Borzęcka
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - Joanna Jankowicz-Cieślak
- Plant Breeding and Genetics Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, IAEA Laboratories Seibersdorf, International Atomic Energy Agency, Vienna International Centre, Vienna, Austria
| | - Piotr Gawroński
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - Adam Kral
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - Bradley J Till
- Plant Breeding and Genetics Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, IAEA Laboratories Seibersdorf, International Atomic Energy Agency, Vienna International Centre, Vienna, Austria.
- Veterinary Genetics Laboratory, University of California, Davis, Davis, California, USA.
| | - Hanna Bolibok-Brągoszewska
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland.
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Hawliczek A, Nota B, Cenijn P, Kamstra J, Pieterse B, Winter R, Winkens K, Hollert H, Segner H, Legler J. Developmental toxicity and endocrine disrupting potency of 4-azapyrene, benzo[b]fluorene and retene in the zebrafish Danio rerio. Reprod Toxicol 2012; 33:213-23. [DOI: 10.1016/j.reprotox.2011.11.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Revised: 11/01/2011] [Accepted: 11/04/2011] [Indexed: 10/15/2022]
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Hawliczek A, Segner H. Toxicogenomics to group environmental chemicals? Toxicol Lett 2010. [DOI: 10.1016/j.toxlet.2010.03.454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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