Dr RAVINDER ANAND-IVELL's Outputs (24)

Testicular function and bone in young men with severe childhood-onset obesity. (2018)
Journal Article
Anand-Ivell, R., Ivell, R., Laakso, S., Viljakainen, H., Lipsanen-Nyman, M., Turpeinen, U., Ivaska, K. K., & Mäkitie, O. (2018). Testicular function and bone in young men with severe childhood-onset obesity. Hormone Research in Paediatrics, 89(6), 442–449. https://doi.org/10.1159/000489818

Background: Previous studies suggest increased risk for hypoandrogenism and fractures in men with obesity. We aimed to describe the effects of severe childhood-onset obesity on the cross talk between metabolic state, testes and skeleton at late puber... Read More about Testicular function and bone in young men with severe childhood-onset obesity..

Oxytocin (2018)
Book Chapter
Ivell, R., Anand-Ivell, R., Tribe, R., & Ludwig, M. (2018). Oxytocin. In Encyclopedia of reproduction (597-606). (Second Edition). Elsevier. https://doi.org/10.1016/B978-0-12-801238-3.64691-3

The small peptide hormone oxytocin has long been recognized as a key factor in the natural induction of the birth process at the end of pregnancy, as well as in the release of milk upon suckling by the infant. It has additional roles within the brain... Read More about Oxytocin.

Development and validation of a mass spectrometry-based assay for quantification of insulin-like factor 3 in human serum (2018)
Journal Article
Anand-Ivell, R., Frederiksen, H., Juul, A., Andersson, A.-M., Albrethsen, J., Nordkap, L., Kirstine Bang, A., & Jørgensen, N. (2018). Development and validation of a mass spectrometry-based assay for quantification of insulin-like factor 3 in human serum. Clinical Chemistry and Laboratory Medicine, 56(11), https://doi.org/10.1515/cclm-2018-0171

BACKGROUND:
The circulating level of the peptide hormone insulin-like factor 3 (INSL3) is a promising diagnostic marker reflecting Leydig cell function in the male. Few commercial immunoassays of varying quality exist. Therefore, we decided to devel... Read More about Development and validation of a mass spectrometry-based assay for quantification of insulin-like factor 3 in human serum.

Amniotic fluid INSL3 measured during the critical time window in human pregnancy relates to cryptorchidism, hypospadias and phthalate load: a large case-control study (2018)
Journal Article
Anand-Ivell, R., Cohen, A., Norgaard-Pedersen, B., Joenssen, B., Bonde, J.-P., Hougaard, D. M., Lindh, C., Toft, G., Lindhard, M., & Ivell, R. (2018). Amniotic fluid INSL3 measured during the critical time window in human pregnancy relates to cryptorchidism, hypospadias and phthalate load: a large case-control study. Frontiers in Physiology, 9, Article 408. https://doi.org/10.3389/fphys.2018.00406

The period of the first to second trimester transition in human pregnancy represents a sensitive window for fetal organogenesis, particularly in regard to the development of the male reproductive system. This is a time of relative analytical inaccess... Read More about Amniotic fluid INSL3 measured during the critical time window in human pregnancy relates to cryptorchidism, hypospadias and phthalate load: a large case-control study.

Theca cell INSL3 and steroids together orchestrate the growing bovine antral follicle (2017)
Journal Article
Dai, Y., Ivell, R., & Anand-Ivell, R. (2017). Theca cell INSL3 and steroids together orchestrate the growing bovine antral follicle. Frontiers in Physiology, 8, https://doi.org/10.3389/fphys.2017.01033

Insulin-like peptide 3 (INSL3) and its specific receptor RXFP2 are both expressed by theca interna cells of the growing antral follicle where they form an essential regulatory element in the production of the steroid precursor androstenedione. Using... Read More about Theca cell INSL3 and steroids together orchestrate the growing bovine antral follicle.

Neohormones in milk (2017)
Journal Article
Ivell, R., & Anand-Ivell, R. (2017). Neohormones in milk. Best Practice and Research: Clinical Endocrinology and Metabolism, 31(4), https://doi.org/10.1016/j.beem.2017.10.005

Neohormone systems evolved specifically to regulate those mammalian traits, such as internal fertilization, pregnancy and lactation, which have proved to be central to the success, environmental independence, and adaptability of mammals as a vertebra... Read More about Neohormones in milk.

Male seminal relaxin contributes to induction of the post-mating cytokine response in the female mouse uterus (2017)
Journal Article
Glynn, D. J., Heng, K., Russell, D. L., Sharkey, D. J., Robertson, S. A., Anand-Ivell, R., & Ivell, R. (2017). Male seminal relaxin contributes to induction of the post-mating cytokine response in the female mouse uterus. Frontiers in Physiology, 8, Article 422. https://doi.org/10.3389/fphys.2017.00422

The hormone relaxin is important in female reproduction for embryo implantation, cardiovascular function, and during labor and lactation. Relaxin is also synthesized in males by organs of the male tract. We hypothesized that relaxin might be one comp... Read More about Male seminal relaxin contributes to induction of the post-mating cytokine response in the female mouse uterus.

Relaxin-family peptide receptors 1 and 2 are fully functional in the bovine (2017)
Journal Article
Dai, Y., Ivell, R., Liu, X., Janowski, D., & Anand-Ivell, R. (2017). Relaxin-family peptide receptors 1 and 2 are fully functional in the bovine. Frontiers in Physiology, 8, Article 359. https://doi.org/10.3389/fphys.2017.00359

In most mammals the peptide hormone relaxin is a key physiological component regulating early pregnancy and birth. However, synteny analysis shows that the gene encoding ovarian relaxin-2 is deleted in cows and sheep. While, these ruminants appear to... Read More about Relaxin-family peptide receptors 1 and 2 are fully functional in the bovine.

Relaxin-like peptides in male reproduction: a human perspective (2017)
Journal Article
Ivell, R., Agoulnik, A. I., & Anand-Ivell, R. (2017). Relaxin-like peptides in male reproduction: a human perspective. British Journal of Pharmacology, 174(10), 990-1001. https://doi.org/10.1111/bph.13689

The relaxin family of peptide hormones and their cognate GPCRs are becoming physiologically well-characterized in the cardiovascular system and particularly in female reproductive processes. Much less is known about the physiology and pharmacology of... Read More about Relaxin-like peptides in male reproduction: a human perspective.

The male fetal biomarker INSL3 reveals substantial hormone exchange between fetuses in early pig gestation (2016)
Journal Article
Vernunft, A., Ivell, R., Heng, K., & Anand-Ivell, R. (2016). The male fetal biomarker INSL3 reveals substantial hormone exchange between fetuses in early pig gestation. PLoS ONE, 11(3), Article e0152689. https://doi.org/10.1371/journal.pone.0152689

The peptide hormone INSL3 is uniquely produced by the fetal testis to promote the transabdominal phase of testicular descent. Because it is fetal sex specific, and is present in only very low amounts in the maternal circulation, INSL3 acts as an idea... Read More about The male fetal biomarker INSL3 reveals substantial hormone exchange between fetuses in early pig gestation.

Perfluorooctane sulfonate concentrations in amniotic fluid, biomarkers of fetal Leydig cell function, and cryptorchidism and hypospadias in Danish boys (1980–1996) (2015)
Journal Article
Toft, G., Jönsson, B. A., Bonde, J. P., Nørgaard-Pedersen, B., Hougaard, D. M., Cohen, A., Lindh, C. H., Ivell, R., Anand-Ivell, R., & Lindhard, M. S. (2016). Perfluorooctane sulfonate concentrations in amniotic fluid, biomarkers of fetal Leydig cell function, and cryptorchidism and hypospadias in Danish boys (1980–1996). Environmental Health Perspectives, 124(1), 151-156. https://doi.org/10.1289/ehp.1409288

Background: Exposure to perfluorooctane sulfonate (PFOS) may potentially disturb fetal Leydig cell hormone production and male genital development.
Objectives: We aimed to study the associations between levels of amniotic fluid PFOS, fetal steroid h... Read More about Perfluorooctane sulfonate concentrations in amniotic fluid, biomarkers of fetal Leydig cell function, and cryptorchidism and hypospadias in Danish boys (1980–1996).

Longitudinal assessment of circulating insulin-like peptide 3 levels in healthy peripubertal girls (2014)
Journal Article
Hagen, C. P., Mieritz, M. G., Nielsen, J. E., Anand-Ivell, R., Ivell, R., & Juul, A. (2015). Longitudinal assessment of circulating insulin-like peptide 3 levels in healthy peripubertal girls. Fertility and Sterility, 103(3), https://doi.org/10.1016/j.fertnstert.2014.11.014

Objective: To elucidate the natural course of circulating insulin-like peptide 3 (INSL3) levels according to puberty as well as its relation to other reproductive hormones.
Design: Population-based cohort study.
Setting: Not applicable.
Patient(s)... Read More about Longitudinal assessment of circulating insulin-like peptide 3 levels in healthy peripubertal girls.

Cryptorchidism in the orl rat is associated with muscle patterning defects in the fetal gubernaculum and altered hormonal signaling (2014)
Journal Article
Barthold, J. S., Robbins, A., Wang, Y., Pugarelli, J., Mateson, A., Anand-Ivell, R., Ivell, R., McCahan, S. M., & Akins, R. E. J. (2014). Cryptorchidism in the orl rat is associated with muscle patterning defects in the fetal gubernaculum and altered hormonal signaling. Biology of Reproduction, 91(2), https://doi.org/10.1095/biolreprod.114.119560

Cryptorchidism, or undescended testis, is a common male genital anomaly of unclear etiology. Hormonal stimulation of the developing fetal gubernaculum by testicular androgens and insulin-like 3 (INSL3) is required for testicular descent. In studies o... Read More about Cryptorchidism in the orl rat is associated with muscle patterning defects in the fetal gubernaculum and altered hormonal signaling.

Insulin-like factor 3 and the HPG axis in the male (2014)
Journal Article
Ivell, R., Heng, K., & Anand-Ivell, R. (in press). Insulin-like factor 3 and the HPG axis in the male. Frontiers in Endocrinology, 5(6), https://doi.org/10.3389/fendo.2014.00006

The hypothalamic–pituitary–gonadal (HPG) axis comprises pulsatile GnRH from the hypothalamus impacting on the anterior pituitary to induce expression and release of both LH and FSH into the circulation. These in turn stimulate receptors on testicular... Read More about Insulin-like factor 3 and the HPG axis in the male.

Serum levels of insulin-like factor 3, anti-Müllerian hormone, inhibin B, and testosterone during pubertal transition in healthy boys: a longitudinal pilot study (2014)
Journal Article
Johansen, M. L., Anand-Ivell, R., Mouritsen, A., Hagen, C. P., Mieritz, M. G., Søeborg, T., Johannsen, T. H., Main, K. M., Andersson, A.-M., Ivell, R., & Juul, A. (2014). Serum levels of insulin-like factor 3, anti-Müllerian hormone, inhibin B, and testosterone during pubertal transition in healthy boys: a longitudinal pilot study. Reproduction, 147, https://doi.org/10.1530/REP-13-0435

Insulin-like factor 3 (INSL3) is a promising marker of Leydig cell function with potentially high clinical relevance. Limited data of INSL3 levels in relation to other reproductive hormones in healthy pubertal boys exist. In this study, we aimed to e... Read More about Serum levels of insulin-like factor 3, anti-Müllerian hormone, inhibin B, and testosterone during pubertal transition in healthy boys: a longitudinal pilot study.

Insulin-like factor 3 as a monitor of endocrine disruption (2013)
Journal Article
Anand-Ivell, R., & Ivell, R. (2014). Insulin-like factor 3 as a monitor of endocrine disruption. Reproduction, 147, Article R87-R95. https://doi.org/10.1530/REP-13-0486

Insulin-like factor 3 (INSL3) is generated and secreted by differentiated interstitial Leydig cells of the testes in both fetal and adult males of all mammalian species so far analyzed. All evidence to date suggests that it is produced constitutively... Read More about Insulin-like factor 3 as a monitor of endocrine disruption.

Circulating insulin-like factor 3 (INSL3) in healthy and infertile women (2013)
Journal Article
Anand-Ivell, R., Tremellen, K., Dai, Y., Heng, K., Yosida, M., Knight, P., & Ivell, R. (2013). Circulating insulin-like factor 3 (INSL3) in healthy and infertile women. Human Reproduction, 28(11), https://doi.org/10.1093/humrep/det3

Study question: How does insulin-like factor 3 (INSL3) concentration in blood vary across the menstrual cycle in women?
Summary answer: INSL3 is secreted by the theca interna cells of growing antral follicles and is phasic in its expression.
What i... Read More about Circulating insulin-like factor 3 (INSL3) in healthy and infertile women.

Regulation of the reproductive cycle and early pregnancy by relaxin family peptides (2013)
Journal Article
Anand-Ivell, R., & Ivell, R. (2014). Regulation of the reproductive cycle and early pregnancy by relaxin family peptides. Molecular and Cellular Endocrinology, 382(1), https://doi.org/10.1016/j.mce.2013.08.010

The relaxin family of peptide hormones are structurally closely related to one another sharing a heterodimeric A–B structure, like that of insulin. They may also be active as unprocessed B–C–A pro-forms. Relaxin has been shown to pay a key role withi... Read More about Regulation of the reproductive cycle and early pregnancy by relaxin family peptides.

Non-classical mechanisms of steroid sensing in the ovary: lessons from the bovine oxytocin model (2013)
Journal Article
Ivell, R., Dai, Y., Mann, N., & Anand-Ivell, R. (2014). Non-classical mechanisms of steroid sensing in the ovary: lessons from the bovine oxytocin model. Molecular and Cellular Endocrinology, 382(1), https://doi.org/10.1016/j.mce.2013.04.016

Steroidogenic tissues such as the ovary, testes or adrenal glands are paradoxical in that they often indicate actions of steroid hormones within a dynamic range of ligand concentration in a high nanomolar or even micromolar level, i.e. at the natural... Read More about Non-classical mechanisms of steroid sensing in the ovary: lessons from the bovine oxytocin model.

INSL3 as a biomarker of Leydig cell functionality (2013)
Journal Article
Ivell, R., Wade, J. D., & Anand-Ivell, R. (2013). INSL3 as a biomarker of Leydig cell functionality. Biology of Reproduction, 88(6), https://doi.org/10.1095/biolreprod.113.108969

Insulin-like factor 3 (INSL3) is a small peptide hormone made and secreted uniquely by mature Leydig cells in the testes of all mammals. Importantly, this expression and secretion appears to be constitutive and therefore reflects the differentiation... Read More about INSL3 as a biomarker of Leydig cell functionality.