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Article ; Online: The impact of microplastics on female reproduction and early life.

Yang, Jiayi / Kamstra, Jorke / Legler, Juliette / Aardema, Hilde

2023 Volume 20, Issue 2, Page(s) e20230037

Abstract: Plastic pollution in our environment is one of the most important global health concerns right now. Micro- and nanoplastics (MNPs) are taken up by both humans and animals, mainly via food and water, and can pass important epithelial barriers. Indications ...

Abstract	Plastic pollution in our environment is one of the most important global health concerns right now. Micro- and nanoplastics (MNPs) are taken up by both humans and animals, mainly via food and water, and can pass important epithelial barriers. Indications of plastics in the blood circulation have recently been shown in both humans and farm animals, but standardized methods to quantify the exact levels of MNPs to which we are exposed are currently lacking. Potential hazards of MNPs are being investigated very recently, including the impact that MNPs may have on reproduction. However, studies on mammalian reproduction are scarce, but a wealth of data from aquatic species indicates reproductive effects of MNPs. The first studies in rodent models demonstrate that MNPs reach the gonads after oral exposure and may impact offspring after maternal exposure during the gestational period. These effects may arise from the particles themselves or the presence of plastic contaminants that leach from plastics. Plastic contamination has been detected in human placentas, fetal fluid and the meconium of newborns, indicating the presence of plastics from the very first start of life. Currently there is a lack of studies that investigate the impact of MNP exposure during the periconception and embryonic period, whereas this is an extremely sensitive period that needs considerable attention with the growing amount of plastics in our environment.
Language	English
Publishing date	2023-07-24
Publishing country	Brazil
Document type	Journal Article
ZDB-ID	2227229-X
ISSN	1984-3143 ; 1984-3143
ISSN (online)	1984-3143
ISSN	1984-3143
DOI	10.1590/1984-3143-AR2023-0037
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Parallel-plate compression test for soft materials: confocal microscopy-assisted ferrule-top nanoindentation.

Manalili, Dexter / Berardi, Massimiliano / Aardema, Hilde / Asimaki, Konstantina / Sarmiento, Raymund / Imran Akca, B

Biomedical optics express

2022 Volume 13, Issue 2, Page(s) 824–837

Abstract: The parallel-plate compression test is one of the simplest ways to measure the mechanical properties of a material. In this test, the Young's modulus ( ...

Abstract	The parallel-plate compression test is one of the simplest ways to measure the mechanical properties of a material. In this test, the Young's modulus (
Language	English
Publishing date	2022-01-18
Publishing country	United States
Document type	Journal Article
ZDB-ID	2572216-5
ISSN	2156-7085
ISSN	2156-7085
DOI	10.1364/BOE.447147
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Article ; Online: The effects of cow introductions on milk production and behaviour of the herd measured with sensors.

Scheurwater, Josje / Jorritsma, Ruurd / Nielen, Mirjam / Heesterbeek, Hans / van den Broek, Jan / Aardema, Hilde

The Journal of dairy research

2022 Volume 88, Issue 4, Page(s) 374–380

Abstract: This research paper addresses the hypothesis that cow introductions in dairy herds affect milk production and behaviour of animals already in the herd. In dairy farms, cows are commonly regrouped or moved. Negative effects of regroupings on the ... ...

Abstract	This research paper addresses the hypothesis that cow introductions in dairy herds affect milk production and behaviour of animals already in the herd. In dairy farms, cows are commonly regrouped or moved. Negative effects of regroupings on the introduced animals are reported in other studies. However, little is known about the effects on lactating cows in the herd. In this research a herd of 53 lactating dairy cows was divided into two groups in a cross-over design study. 25 cows were selected as focal cows for which continuous sensor data were collected. The treatment period consisted of replacing non-focal cows three times a week. Many potentially influencing factors were taken into account in the analysis. Replacement of cows in the treatment period indeed affected the focal animals. During the treatment period these cows showed increased walking and reduced rumination activity and produced less milk compared to the control period. Milk production per milking decreased in the treatment period up to 0.4 kg per milking on certain weekdays. Lying and standing behaviour were similar between the control and the treatment period. The current study suggests that cow introductions affect welfare and milk production of the cows already in the herd.
MeSH term(s)	Animals ; Cattle ; Cattle Diseases ; Dairying ; Farms ; Female ; Lactation ; Milk
Language	English
Publishing date	2022-01-24
Publishing country	England
Document type	Journal Article
ZDB-ID	242089-2
ISSN	1469-7629 ; 0022-0299
ISSN (online)	1469-7629
ISSN	0022-0299
DOI	10.1017/S0022029921000856
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Article: The effects of cow introductions on milk production and behaviour of the herd measured with sensors

Scheurwater, Josje / Jorritsma, Ruurd / Nielen, Mirjam / Heesterbeek, Hans / van den Broek, Jan / Aardema, Hilde

Journal of dairy research. 2021 Nov., v. 88, no. 4

2021

Abstract	This research paper addresses the hypothesis that cow introductions in dairy herds affect milk production and behaviour of animals already in the herd. In dairy farms, cows are commonly regrouped or moved. Negative effects of regroupings on the introduced animals are reported in other studies. However, little is known about the effects on lactating cows in the herd. In this research a herd of 53 lactating dairy cows was divided into two groups in a cross-over design study. 25 cows were selected as focal cows for which continuous sensor data were collected. The treatment period consisted of replacing non-focal cows three times a week. Many potentially influencing factors were taken into account in the analysis. Replacement of cows in the treatment period indeed affected the focal animals. During the treatment period these cows showed increased walking and reduced rumination activity and produced less milk compared to the control period. Milk production per milking decreased in the treatment period up to 0.4 kg per milking on certain weekdays. Lying and standing behaviour were similar between the control and the treatment period. The current study suggests that cow introductions affect welfare and milk production of the cows already in the herd.
Keywords	cross-over studies ; milk ; milk production ; research ; rumination
Language	English
Dates of publication	2021-11
Size	p. 374-380.
Publishing place	Cambridge University Press
Document type	Article
ZDB-ID	242089-2
ISSN	1469-7629 ; 0022-0299
ISSN (online)	1469-7629
ISSN	0022-0299
DOI	10.1017/S0022029921000856
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Seasonal variations in the metabolomic profile of the ovarian follicle components in Italian Mediterranean Buffaloes

Kosior, Michal Andrzej / Esposito, Riccardo / Cocchia, Natascia / Piscopo, Federica / Longobardi, Valentina / Cacciola, Nunzio Antonio / Presicce, Giorgio Antonio / Campanile, Giuseppe / Aardema, Hilde / Gasparrini, Bianca

Theriogenology. 2023 Feb. 25,

2023

Abstract: The aim of this work was to evaluate the seasonal effect on the metabolomic profile of the ovarian follicle in Italian Mediterranean buffalo to unravel the causes of the reduced competence during the non-breeding season (NBS). Samples of follicular fluid, ...

Abstract	The aim of this work was to evaluate the seasonal effect on the metabolomic profile of the ovarian follicle in Italian Mediterranean buffalo to unravel the causes of the reduced competence during the non-breeding season (NBS). Samples of follicular fluid, follicular cells, cumulus cells and oocytes were collected from abattoir-derived ovaries during breeding season (BS) and NBS and analyzed by 1H Nuclear Magnetic Resonance. The Orthogonal Projections to Latent Structures of the Discriminant Analysis showed clear separation into seasonal classes and Variable Importance in Projection method identified differentially abundant metabolites between seasons. Seasonal differences were recorded in metabolite content in all analyzed components suggesting that the decreased oocyte competence during NBS may be linked to alteration of several metabolic pathways. The pathway enrichment analysis revealed that differences in the metabolites between the seasons were linked to glutathione, energy generating and amino acid metabolism and phospholipid biosynthesis. The current work allows the identification of potential positive competence markers in the follicular fluid as glutathione, glutamate, lactate and choline, and negative markers like leucine, isoleucine and β-hydroxybutyrate. These results form a major basis to develop potential strategies to optimize the follicular environment and the IVM medium to improve the competence of oocytes during the NBS.
Keywords	amino acid metabolism ; animal reproduction ; biosynthesis ; buffaloes ; choline ; discriminant analysis ; energy ; follicular fluid ; glutamic acid ; glutathione ; isoleucine ; lactic acid ; leucine ; metabolites ; metabolomics ; nuclear magnetic resonance spectroscopy ; oocytes ; phospholipids ; seasonal variation ; Buffalo ; Follicle ; Oocyte competence
Language	English
Dates of publication	2023-0225
Publishing place	Elsevier Inc.
Document type	Article ; Online
Note	Pre-press version
ZDB-ID	189232-0
ISSN	1879-3231 ; 0093-691X
ISSN (online)	1879-3231
ISSN	0093-691X
DOI	10.1016/j.theriogenology.2023.02.022
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Article ; Online: Cumulus cells protect the oocyte against saturated free fatty acids.

Aardema, Hilde / Vos, Peter L A M / Gadella, Bart M

Animal reproduction

2018 Volume 15, Issue Suppl 1, Page(s) 737–750

Abstract: In the cow a major characteristic of metabolic stress is an elevated level of plasma free fatty acid, due to increased lipid mobilization from adipose tissue. Elevated levels of free fatty acids in blood (complexed to albumin) are associated with ... ...

Abstract	In the cow a major characteristic of metabolic stress is an elevated level of plasma free fatty acid, due to increased lipid mobilization from adipose tissue. Elevated levels of free fatty acids in blood (complexed to albumin) are associated with increased lipotoxicity in non-adipose tissue. An overview is provided on the negative impact of free fatty acids and the metabolic stress imposed on the oocyte and early embryo and thus on bovine fertility. There is increasing evidence that
Language	English
Publishing date	2018-08-03
Publishing country	Brazil
Document type	Journal Article
ZDB-ID	2227229-X
ISSN	1984-3143 ; 1984-3143
ISSN (online)	1984-3143
ISSN	1984-3143
DOI	10.21451/1984-3143-AR2018-0063
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Article ; Online: An overview on how cumulus cells interact with the oocyte in a condition with elevated NEFA levels in dairy cows.

Aardema, Hilde / van Tol, Helena T A / Vos, Peter L A M

Animal reproduction science

2019 Volume 207, Page(s) 131–137

Abstract: Metabolic stress in humans and animals is associated with impaired fertility. A major characteristic of metabolic stress is elevated levels of free fatty acids (NEFAs) in blood due to mobilization of body fat reserves. Dairy cows undergo a period of ... ...

Abstract	Metabolic stress in humans and animals is associated with impaired fertility. A major characteristic of metabolic stress is elevated levels of free fatty acids (NEFAs) in blood due to mobilization of body fat reserves. Dairy cows undergo a period of metabolic stress during the peri-calving period, the so-called negative energy balance (NEB) in the early weeks postpartum. At the time of NEB, both saturated and unsaturated NEFAs are mobilized to serve as an alternative energy supply for cells, however in particular saturated NEFAs can have a detrimental effect on somatic cells. Circulating NEFAs are also reflected in the follicular fluid of ovarian follicles and hence reach the cumulus-oocyte-complex (COC), which implies a potential risk for the developing oocyte. To this end, the current review focusses on the impact of NEFAs on the quality of the oocyte.
MeSH term(s)	Animal Feed ; Animal Nutritional Physiological Phenomena ; Animals ; Cattle ; Cell Communication/physiology ; Cumulus Cells/physiology ; Dairying ; Fatty Acids, Nonesterified/blood ; Female ; Follicular Fluid/metabolism ; Lactation/metabolism ; Oocytes/physiology
Chemical Substances	Fatty Acids, Nonesterified
Language	English
Publishing date	2019-06-04
Publishing country	Netherlands
Document type	Journal Article ; Review
ZDB-ID	429674-6
ISSN	1873-2232 ; 0378-4320
ISSN (online)	1873-2232
ISSN	0378-4320
DOI	10.1016/j.anireprosci.2019.06.003
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Article: Seasonal Variations in the Lipid Profile of the Ovarian Follicle in Italian Mediterranean Buffaloes

Kosior, Michal Andrzej / Calabria, Alfonso / Benitez Mora, Maria Paz / Russo, Marco / Presicce, Giorgio Antonio / Cocchia, Natascia / Monti, Salvatore / Aardema, Hilde / Gasparrini, Bianca

Animals. 2022 Aug. 17, v. 12, no. 16

2022

Abstract: The reduced oocyte competence recorded during the non-breading season (NBS) is one of the key factors affecting the profitability of buffalo farming and limits the IVEP efficiency. The purpose of this experiment was to evaluate whether season influences ... ...

Abstract	The reduced oocyte competence recorded during the non-breading season (NBS) is one of the key factors affecting the profitability of buffalo farming and limits the IVEP efficiency. The purpose of this experiment was to evaluate whether season influences the lipid content within the ovarian follicle in the Italian Mediterranean buffalo. Abattoir-derived ovaries were collected during the breeding season (BS) and the NBS, and different matrices (follicular fluid, oocytes, cumulus and follicular cells) were recovered. After the extraction of the apolar fraction, all samples were analyzed by H1 nuclear magnetic resonance and FF samples by gas chromatography–mass spectrometry. Seasonal differences in lipid composition were observed in all matrices. In particular, during the NBS, the triglyceride content was higher in the follicular fluid and in the oocytes but reduced in the follicular cells. Both cholesterol and phospholipids were reduced in the follicular fluid and follicular cells during the NBS. Furthermore, the total amount of non-esterified fatty acids was significantly increased in the follicular fluid. The seasonal variation in lipid profile of the follicle may, in part, account for the reduced buffalo oocyte competence during the NBS, due to the critical role played by lipids in regulating ovarian functions.
Keywords	buffaloes ; cholesterol ; follicular fluid ; gas chromatography-mass spectrometry ; lipid content ; nuclear magnetic resonance spectroscopy ; oocytes ; phospholipids ; profitability ; seasonal variation ; triacylglycerols
Language	English
Dates of publication	2022-0817
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2606558-7
ISSN	2076-2615
ISSN	2076-2615
DOI	10.3390/ani12162108
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Seasonal variations in the metabolomic profile of the ovarian follicle components in Italian Mediterranean Buffaloes.

Theriogenology

2023 Volume 202, Page(s) 42–50

Abstract	The aim of this work was to evaluate the seasonal effect on the metabolomic profile of the ovarian follicle in Italian Mediterranean buffalo to unravel the causes of the reduced competence during the non-breeding season (NBS). Samples of follicular fluid, follicular cells, cumulus cells and oocytes were collected from abattoir-derived ovaries during breeding season (BS) and NBS and analyzed by 1H Nuclear Magnetic Resonance. The Orthogonal Projections to Latent Structures of the Discriminant Analysis showed clear separation into seasonal classes and Variable Importance in Projection method identified differentially abundant metabolites between seasons. Seasonal differences were recorded in metabolite content in all analyzed components suggesting that the decreased oocyte competence during NBS may be linked to alteration of several metabolic pathways. The pathway enrichment analysis revealed that differences in the metabolites between the seasons were linked to glutathione, energy generating and amino acid metabolism and phospholipid biosynthesis. The current work allows the identification of potential positive competence markers in the follicular fluid as glutathione, glutamate, lactate and choline, and negative markers like leucine, isoleucine and β-hydroxybutyrate. These results form a major basis to develop potential strategies to optimize the follicular environment and the IVM medium to improve the competence of oocytes during the NBS.
MeSH term(s)	Female ; Animals ; Seasons ; Buffaloes ; Ovarian Follicle ; Oocytes/metabolism ; Follicular Fluid ; Bison
Language	English
Publishing date	2023-02-25
Publishing country	United States
Document type	Journal Article
ZDB-ID	189232-0
ISSN	1879-3231 ; 0093-691X
ISSN (online)	1879-3231
ISSN	0093-691X
DOI	10.1016/j.theriogenology.2023.02.022
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Article: An overview on how cumulus cells interact with the oocyte in a condition with elevated NEFA levels in dairy cows

Aardema, Hilde / van Tol, Helena T.A / Vos, Peter L.A.M

Animal reproduction science. 2019 Aug., v. 207

2019

Abstract	Metabolic stress in humans and animals is associated with impaired fertility. A major characteristic of metabolic stress is elevated levels of free fatty acids (NEFAs) in blood due to mobilization of body fat reserves. Dairy cows undergo a period of metabolic stress during the peri-calving period, the so-called negative energy balance (NEB) in the early weeks postpartum. At the time of NEB, both saturated and unsaturated NEFAs are mobilized to serve as an alternative energy supply for cells, however in particular saturated NEFAs can have a detrimental effect on somatic cells. Circulating NEFAs are also reflected in the follicular fluid of ovarian follicles and hence reach the cumulus-oocyte-complex (COC), which implies a potential risk for the developing oocyte. To this end, the current review focusses on the impact of NEFAs on the quality of the oocyte.
Keywords	blood ; body fat ; dairy cows ; energy balance ; follicular fluid ; free fatty acids ; humans ; oocytes ; renewable energy sources ; risk ; somatic cells
Language	English
Dates of publication	2019-08
Size	p. 131-137.
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	429674-6
ISSN	1873-2232 ; 0378-4320
ISSN (online)	1873-2232
ISSN	0378-4320
DOI	10.1016/j.anireprosci.2019.06.003
Database	NAL-Catalogue (AGRICOLA)

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