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Article ; Online: Pathogenesis of the crosstalk between reproductive function and stress in animals - part 2: Prolactin, thyroid, inflammation and oxidative stress.

Jaillardon, Laetitia / Kaiser, Marianne

Reproduction in domestic animals = Zuchthygiene

2023 Volume 58 Suppl 2, Page(s) 137–143

Abstract: Stress has a significant impact on reproductive health and fertility in both humans as well as various animal species. In particular, chronic stress can disrupt the delicate balance of the hormonal system that regulates reproductive function, leading to ... ...

Abstract	Stress has a significant impact on reproductive health and fertility in both humans as well as various animal species. In particular, chronic stress can disrupt the delicate balance of the hormonal system that regulates reproductive function, leading to a variety of reproductive disorders and fertility issues. Beside the action of the hypothalamic-pituitary-adrenal (HPA) system and the sympatho-adrenomedullary system (SAM), other subsequent mechanisms have been incriminated. Thus, stress has also been associated with increased prolactin level, resulting in an inhibition of the hypothalamo-pituitary-gonadal (HPG) system leading to several reproductive disorders. Thyroid function is inhibited during chronic stress, and therefore considered an important regulator of reproductive function. Thus, and in particular by interfering with the HPA system, stress-induced immune dysregulation can have adverse effects on reproduction. In addition, oxidative stress and inflammation have been proposed as potential mechanisms by which chronic stress affects reproductive function. This is caused by an increase in reactive oxygen species (ROS) production that has a harmful effect on cells. Furthermore, inflammation can lead to tissue damage and scarring, which can affect fertility. The present review completes the complex mechanism linking stress and reproduction through the current knowledge in various animal species in a comparative point of view.
MeSH term(s)	Animals ; Humans ; Thyroid Gland ; Prolactin ; Oxidative Stress ; Reactive Oxygen Species ; Inflammation/veterinary
Chemical Substances	Prolactin (9002-62-4) ; Reactive Oxygen Species
Language	English
Publishing date	2023-09-19
Publishing country	Germany
Document type	Journal Article ; Review
ZDB-ID	1015187-4
ISSN	1439-0531 ; 0936-6768
ISSN (online)	1439-0531
ISSN	0936-6768
DOI	10.1111/rda.14445
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Pathogenesis of the crosstalk between reproductive function and stress in animals-part 1: Hypothalamo-pituitary-adrenal axis, sympatho-adrenomedullary system and kisspeptin.

Kaiser, Marianne / Jaillardon, Laetitia

Reproduction in domestic animals = Zuchthygiene

2023 Volume 58 Suppl 2, Page(s) 176–183

Abstract: Stress is defined as a disruption of the body homeostasis in response to modest as well as perceived challenge. Two main physiological routes, the hypothalamic-pituitary-adrenal system (HPA) and the sympatho-adrenomedullary system (SAM), aim to maintain ... ...

Abstract	Stress is defined as a disruption of the body homeostasis in response to modest as well as perceived challenge. Two main physiological routes, the hypothalamic-pituitary-adrenal system (HPA) and the sympatho-adrenomedullary system (SAM), aim to maintain or restore homeostasis by mutual interaction. SAM is quickly-reacting as it primarily works through the nervous system-the sympathetic nervous system. In response to stress, signals are sent to activate the adrenal medulla which releases catecholamines (primarily adrenaline and norepinephrine). The catecholamines have a momentary effect on the body's organs that are prepared for a fight situation. At the same time, the stressor activates the HPA axis by signals from the brain causing secretion of the pituitary hormone adrenocorticotropic hormone (ACTH). ACTH acts on the adrenal cortex, which secretes glucocorticoids, including cortisol. Since HPA primarily works through hormones, the system is slightly slower than SAM and gives rise to a metabolic effect. While short-term stress response is an adaptive and beneficial process, chronic or excessive stress can lead to a range of negative health outcomes including reproductive disorders and infertility. Several mechanisms have been proposed to explain the link between stress and reproduction. This includes in particular kisspeptin, which is closely related to reproduction, as it is a powerful stimulator of the Hypothalamic-pituitary-gonadal (HPG) system. The present review, through current knowledge in various male and female species, deals with the role of the SAM and the HPA, including the major action of kisspeptin and glucocorticoids that trigger the consequences of psychological or physiological stress on reproductive function.
MeSH term(s)	Female ; Male ; Animals ; Hypothalamo-Hypophyseal System ; Kisspeptins ; Glucocorticoids ; Pituitary-Adrenal System ; Adrenocorticotropic Hormone ; Catecholamines
Chemical Substances	Kisspeptins ; Glucocorticoids ; Adrenocorticotropic Hormone (9002-60-2) ; Catecholamines
Language	English
Publishing date	2023-09-19
Publishing country	Germany
Document type	Journal Article ; Review
ZDB-ID	1015187-4
ISSN	1439-0531 ; 0936-6768
ISSN (online)	1439-0531
ISSN	0936-6768
DOI	10.1111/rda.14444
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Pathogenesis of the crosstalk between reproductive function and stress in animals – part 2: Prolactin, thyroid, inflammation and oxidative stress

Jaillardon, Laetitia / Kaiser, Marianne

Reproduction in Domestic Animals. 2023 Sept., v. 58 Suppl S2 p.137-143

2023

Abstract	Stress has a significant impact on reproductive health and fertility in both humans as well as various animal species. In particular, chronic stress can disrupt the delicate balance of the hormonal system that regulates reproductive function, leading to a variety of reproductive disorders and fertility issues. Beside the action of the hypothalamic‐pituitary‐adrenal (HPA) system and the sympatho‐adrenomedullary system (SAM), other subsequent mechanisms have been incriminated. Thus, stress has also been associated with increased prolactin level, resulting in an inhibition of the hypothalamo‐pituitary‐gonadal (HPG) system leading to several reproductive disorders. Thyroid function is inhibited during chronic stress, and therefore considered an important regulator of reproductive function. Thus, and in particular by interfering with the HPA system, stress‐induced immune dysregulation can have adverse effects on reproduction. In addition, oxidative stress and inflammation have been proposed as potential mechanisms by which chronic stress affects reproductive function. This is caused by an increase in reactive oxygen species (ROS) production that has a harmful effect on cells. Furthermore, inflammation can lead to tissue damage and scarring, which can affect fertility. The present review completes the complex mechanism linking stress and reproduction through the current knowledge in various animal species in a comparative point of view.
Keywords	animals ; inflammation ; oxidative stress ; pathogenesis ; prolactin ; reactive oxygen species ; reproduction ; thyroid function
Language	English
Dates of publication	2023-09
Size	p. 137-143.
Publishing place	John Wiley & Sons, Ltd
Document type	Article ; Online
Note	REVIEW
ZDB-ID	1015187-4
ISSN	1439-0531 ; 0936-6768
ISSN (online)	1439-0531
ISSN	0936-6768
DOI	10.1111/rda.14445
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Pathogenesis of the crosstalk between reproductive function and stress in animals—part 1: Hypothalamo–pituitary–adrenal axis, sympatho‐adrenomedullary system and kisspeptin

Kaiser, Marianne / Jaillardon, Laetitia

Reproduction in Domestic Animals. 2023 Sept., v. 58 Suppl S2 p.176-183

2023

Abstract: Stress is defined as a disruption of the body homeostasis in response to modest as well as perceived challenge. Two main physiological routes, the hypothalamic–pituitary–adrenal system (HPA) and the sympatho‐adrenomedullary system (SAM), aim to maintain ... ...

Abstract	Stress is defined as a disruption of the body homeostasis in response to modest as well as perceived challenge. Two main physiological routes, the hypothalamic–pituitary–adrenal system (HPA) and the sympatho‐adrenomedullary system (SAM), aim to maintain or restore homeostasis by mutual interaction. SAM is quickly‐reacting as it primarily works through the nervous system—the sympathetic nervous system. In response to stress, signals are sent to activate the adrenal medulla which releases catecholamines (primarily adrenaline and norepinephrine). The catecholamines have a momentary effect on the body's organs that are prepared for a fight situation. At the same time, the stressor activates the HPA axis by signals from the brain causing secretion of the pituitary hormone adrenocorticotropic hormone (ACTH). ACTH acts on the adrenal cortex, which secretes glucocorticoids, including cortisol. Since HPA primarily works through hormones, the system is slightly slower than SAM and gives rise to a metabolic effect. While short‐term stress response is an adaptive and beneficial process, chronic or excessive stress can lead to a range of negative health outcomes including reproductive disorders and infertility. Several mechanisms have been proposed to explain the link between stress and reproduction. This includes in particular kisspeptin, which is closely related to reproduction, as it is a powerful stimulator of the Hypothalamic–pituitary–gonadal (HPG) system. The present review, through current knowledge in various male and female species, deals with the role of the SAM and the HPA, including the major action of kisspeptin and glucocorticoids that trigger the consequences of psychological or physiological stress on reproductive function.
Keywords	adrenal cortex ; adrenal medulla ; brain ; corticotropin ; cortisol ; epinephrine ; females ; homeostasis ; kisspeptin ; males ; norepinephrine ; pathogenesis ; reproduction ; secretion ; stress response ; sympathetic nervous system
Language	English
Dates of publication	2023-09
Size	p. 176-183.
Publishing place	John Wiley & Sons, Ltd
Document type	Article ; Online
Note	REVIEW
ZDB-ID	1015187-4
ISSN	1439-0531 ; 0936-6768
ISSN (online)	1439-0531
ISSN	0936-6768
DOI	10.1111/rda.14444
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Evaluation of the potential benefits of iron supplementation in organic pig farming.

Prunier, Armelle / Leblanc-Maridor, Mily / Pauwels, Maud / Jaillardon, Laetitia / Belloc, Catherine / Merlot, Elodie

Open research Europe

2022 Volume 2, Page(s) 11

Abstract: Background: ...

Abstract	Background:
Language	English
Publishing date	2022-03-21
Publishing country	Belgium
Document type	Journal Article
ISSN	2732-5121
ISSN (online)	2732-5121
DOI	10.12688/openreseurope.14367.2
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: What is your diagnosis? Intestinal mass in a cat.

Rouillé, Elodie / Soetart, Nicolas / Drut, Amandine / Abadie, Jérôme / Jaillardon, Laetitia

Veterinary clinical pathology

2021 Volume 51, Issue 1, Page(s) 157–160

MeSH term(s)	Animals ; Bone Neoplasms/veterinary ; Cat Diseases/diagnosis ; Cats ; Osteosarcoma/diagnosis ; Osteosarcoma/veterinary
Language	English
Publishing date	2021-12-06
Publishing country	United States
Document type	Journal Article
ZDB-ID	2114702-4
ISSN	1939-165X ; 0275-6382
ISSN (online)	1939-165X
ISSN	0275-6382
DOI	10.1111/vcp.13005
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Inflammatory and oxidative status in European captive black rhinoceroses: A link with Iron Overload Disorder?

Pouillevet, Hanae / Soetart, Nicolas / Boucher, Delphine / Wedlarski, Rudy / Jaillardon, Laetitia

PloS one

2020 Volume 15, Issue 8, Page(s) e0231514

Abstract: Iron Overload Disorder (IOD) is a syndrome developed by captive browsing rhinoceroses like black rhinoceroses (Diceros bicornis), in which hemosiderosis develops in vital organs while free iron accumulates in the body, potentially predisposing to various ...

Abstract	Iron Overload Disorder (IOD) is a syndrome developed by captive browsing rhinoceroses like black rhinoceroses (Diceros bicornis), in which hemosiderosis develops in vital organs while free iron accumulates in the body, potentially predisposing to various secondary diseases. Captive grazing species like white rhinoceroses (Ceratotherium simum) do not seem to be affected. The authors hypothesized that inflammation and oxidative stress may be implicated in the pathogenesis of IOD in captive black rhinoceroses, making this syndrome a potential common denominator to various diseases described in captivity in this species. In this prospective study, 15 black (BR) and 29 white rhinoceroses (WR) originating from 22 European zoos were blood-sampled and compared for their iron status (serum iron), liver/muscle biochemical parameters (AST, GGT, cholesterol), inflammatory status (total proteins, protein electrophoresis) and oxidative stress markers (SOD, GPX, dROMs). Results showed higher serum iron and liver enzyme levels in black rhinoceroses (P < 0.01), as well as higher dROMs (P < 0.01) and a trend for higher GPX (P = 0.06) levels. The albumin/globulin ratio was lower in black rhinoceroses (P < 0.05) due to higher α2-globulin levels (P < 0.001). The present study suggests a higher inflammatory and oxidative profile in captive BR than in WR, possibly in relation to iron status. This could be either a consequence or a cause of iron accumulation. Further investigations are needed to assess the prognostic value of the inflammatory and oxidative markers in captive black rhinoceroses, particularly for evaluating the impact of reduced-iron and antioxidant-supplemented diets.
MeSH term(s)	Animals ; Animals, Zoo/metabolism ; Disease Susceptibility/metabolism ; Female ; Inflammation/metabolism ; Iron/metabolism ; Iron Overload/immunology ; Iron Overload/metabolism ; Liver/metabolism ; Male ; Oxidative Stress/physiology ; Perissodactyla/metabolism ; Prospective Studies
Chemical Substances	Iron (E1UOL152H7)
Language	English
Publishing date	2020-08-12
Publishing country	United States
Document type	Journal Article
ISSN	1932-6203
ISSN (online)	1932-6203
DOI	10.1371/journal.pone.0231514
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Evaluation of the potential benefits of iron supplementation in organic pig farming [version 2; peer review

Maud Pauwels / Armelle Prunier / Laetitia Jaillardon / Mily Leblanc-Maridor / Elodie Merlot / Catherine Belloc

Open Research Europe, Vol

2 approved]

2022 Volume 2

Abstract: Background: Iron from the stock acquired during foetal life and the ingestion of milk is not sufficient to cover the needs of the piglets during their first weeks of life. In organic farming, systematic supplementation with iron is problematic due to a ... ...

Abstract	Background: Iron from the stock acquired during foetal life and the ingestion of milk is not sufficient to cover the needs of the piglets during their first weeks of life. In organic farming, systematic supplementation with iron is problematic due to a strong limitation in pharmaceutic treatments. Methods: Erythroid parameters around weaning were measured in piglets from organic outdoor and indoor farms, and related to indicators of the inflammatory status. Blood samples were collected from 28.9±2.6 piglets/herd at 42.0±3.2 days of age and 11.9±3.0 kg live weight (mean ± SD) in 21 farms from the west part of France. Among the 11 outdoor farms, only one had supplemented piglets with 200 mg iron while among the 10 indoor farms, only one had not supplemented piglets, one had supplemented them with 100 mg, 8 with 200 mg and one with 400 mg. Results: Compared to outdoor piglets without supplementation, piglets kept indoors and receiving 200 mg iron had lower haemoglobin concentration (105 vs 118±2 g/l, mean ± SE) and red blood cell volume (56 vs 60±1 fl) (P<0.005). The reduction in haemoglobin concentration and red blood cell volume was more pronounced in indoor piglets supplemented with 100 mg of iron and even more when they had not received iron. The plasma concentration of haptoglobin was lower in outdoor than in indoor piglets (0.51±0.06 vs 0.78±0.09 g/l) whereas no effect of housing was observed for markers of oxidative stress (dROM, BAP). In the 14 farms where sow parity was known, the haemoglobin concentration was lower in piglets from primiparous than from multiparous sows (109 versus 114±2 g/l, P < 0.001). Conclusion: With the exception of soils where the content of bioavailable iron is very low, piglets from outdoor farms do not require iron supplementation, unlike those raised indoors.
Keywords	Anaemia ; haemoglobin ; inflammation ; outdoors ; indoors ; suckling piglet ; eng ; Science ; Q ; Social Sciences ; H
Subject code	630
Language	English
Publishing date	2022-03-01T00:00:00Z
Publisher	F1000 Research Ltd
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Metabolomics and lipidomics to identify biomarkers of effect related to exposure to non-dioxin-like polychlorinated biphenyls in pigs.

Hernández-Mesa, Maykel / Narduzzi, Luca / Ouzia, Sadia / Soetart, Nicolas / Jaillardon, Laetitia / Guitton, Yann / Le Bizec, Bruno / Dervilly, Gaud

Chemosphere

2022 Volume 296, Page(s) 133957

Abstract: Recent epidemiological studies show that current levels of exposure to polychlorinated biphenyls (PCBs) remain of great concern, as there is still a link between such exposures and the development of chronic environmental diseases. In this sense, most ... ...

Abstract	Recent epidemiological studies show that current levels of exposure to polychlorinated biphenyls (PCBs) remain of great concern, as there is still a link between such exposures and the development of chronic environmental diseases. In this sense, most studies have focused on the health effects caused by exposure to dioxin-like PCBs (DL-PCBs), although chemical exposure to non-dioxin-like PCB (NDL-PCB) congeners is more significant. In addition, adverse effects of PCBs have been documented in humans after accidental and massive exposure, but little is known about the effect of chronic exposure to low-dose PCB mixtures. In this work, exposure to Aroclor 1260 (i.e. a commercially available mixture of PCBs consisting primarily of NDL-PCB congeners) in pigs is investigated as new evidence in the risk assessment of NDL-PCBs. This animal model has been selected due to the similarities with human metabolism and to support previous toxicological studies carried out with more frequently used animal models. Dietary exposure doses in the order of few ng/kg body weight (b.w.) per day were applied. As expected, exposure to Aroclor 1260 led to the bioaccumulation of NDL-PCBs in perirenal fat of pigs. Metabolomics and lipidomics have been applied to reveal biomarkers of effect related to Aroclor 1260 exposure, and by extension to NDL-PCB exposure, for 21 days. In the metabolomics analysis, 33 metabolites have been identified (level 1 and 2) as significantly altered by the Aroclor 1260 administration, while in the lipidomics analysis, 39 metabolites were putatively annotated (level 3) and associated with NDL-PCB exposure. These biomarkers are mainly related to the alteration of fatty acid metabolism, glycerophospholipid metabolism and tryptophan-kynurenine pathway.
MeSH term(s)	Animals ; Biomarkers ; Dioxins ; Lipidomics ; Polychlorinated Biphenyls/analysis ; Polychlorinated Biphenyls/toxicity ; Polychlorinated Dibenzodioxins ; Swine
Chemical Substances	Biomarkers ; Dioxins ; Polychlorinated Dibenzodioxins ; Polychlorinated Biphenyls (DFC2HB4I0K)
Language	English
Publishing date	2022-02-11
Publishing country	England
Document type	Journal Article
ZDB-ID	120089-6
ISSN	1879-1298 ; 0045-6535 ; 0366-7111
ISSN (online)	1879-1298
ISSN	0045-6535 ; 0366-7111
DOI	10.1016/j.chemosphere.2022.133957
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Article ; Online: Inflammatory and oxidative status in European captive black rhinoceroses

Hanae Pouillevet / Nicolas Soetart / Delphine Boucher / Rudy Wedlarski / Laetitia Jaillardon

PLoS ONE, Vol 15, Iss 8, p e

A link with Iron Overload Disorder?

2020 Volume 0231514

Abstract	Iron Overload Disorder (IOD) is a syndrome developed by captive browsing rhinoceroses like black rhinoceroses (Diceros bicornis), in which hemosiderosis develops in vital organs while free iron accumulates in the body, potentially predisposing to various secondary diseases. Captive grazing species like white rhinoceroses (Ceratotherium simum) do not seem to be affected. The authors hypothesized that inflammation and oxidative stress may be implicated in the pathogenesis of IOD in captive black rhinoceroses, making this syndrome a potential common denominator to various diseases described in captivity in this species. In this prospective study, 15 black (BR) and 29 white rhinoceroses (WR) originating from 22 European zoos were blood-sampled and compared for their iron status (serum iron), liver/muscle biochemical parameters (AST, GGT, cholesterol), inflammatory status (total proteins, protein electrophoresis) and oxidative stress markers (SOD, GPX, dROMs). Results showed higher serum iron and liver enzyme levels in black rhinoceroses (P < 0.01), as well as higher dROMs (P < 0.01) and a trend for higher GPX (P = 0.06) levels. The albumin/globulin ratio was lower in black rhinoceroses (P < 0.05) due to higher α2-globulin levels (P < 0.001). The present study suggests a higher inflammatory and oxidative profile in captive BR than in WR, possibly in relation to iron status. This could be either a consequence or a cause of iron accumulation. Further investigations are needed to assess the prognostic value of the inflammatory and oxidative markers in captive black rhinoceroses, particularly for evaluating the impact of reduced-iron and antioxidant-supplemented diets.
Keywords	Medicine ; R ; Science ; Q
Subject code	610
Language	English
Publishing date	2020-01-01T00:00:00Z
Publisher	Public Library of Science (PLoS)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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