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Frontiers of Hormone Research

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https://www.readbyqxmd.com/read/28245460/endocrine-immunology-of-chagas-disease
#1
REVIEW
Wilson Savino
The concept of immunoendocrine interactions, existing in normal and pathological conditions, is relatively recent. Accordingly, cells from the immune system and from endocrine glands share common receptors for cytokines and hormones, allowing systemic and local regulatory mechanisms. In this context, lymphoid organs are under physiological hormonal control. Disturbances in these systems, as those caused by pathogens changes the physiological profile of these interactions, with the release of proinflammatory cytokines and hormones, and one example is the hypothalamus-pituitary-adrenal (HPA) axis...
2017: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/28245459/the-somatotrope-growth-hormone-releasing-hormone-growth-hormone-insulin-like-growth-factor-1-axis-in-immunoregulation-and-immunosenescence
#2
REVIEW
Gwennaëlle Bodart, Khalil Farhat, Chantal Charlet-Renard, Roberto Salvatori, Vincent Geenen, Henri Martens
Most scientific reports debate the thymotropic and immuno-stimulating properties of the somatotrope growth hormone-releasing hormone (GHRH)/growth hormone (GH)/insulin-like growth factor (IGF)-1 axis, but there is still some disagreement about the physiological role of this axis in basal conditions. Moreover, some authors have hypothesized that the physiological role of the somatotrope axis only appears in stressful conditions (such as sepsis or infective and inflammatory diseases). This chapter will provide an extended overview of the expression of the components (signals and receptors) of the somatotrope axis and their properties on cells of the innate and adaptive immune system...
2017: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/28245458/endocrine-autoimmunity-in-down-s-syndrome
#3
REVIEW
Federica Guaraldi, Ruth Rossetto Giaccherino, Fabio Lanfranco, Giovanna Motta, Davide Gori, Emanuela Arvat, Enzio Ghigo, Roberta Giordano
Since the mid 1900s, a significant increase of infectious, hematological, and autoimmune diseases has been reported in patients with Down's syndrome (DS), independent of sex, age, family history, and exposure to other risk factors, suggesting an intrinsic alteration of the immune system. Several in vitro and in vivo studies have demonstrated alterations of both cellular and humoral immunological response mainly, although not exclusively, secondary to alterations of the expression of autoimmune regulator gene (located on chromosome 21), leading to thymic structural and functional impairments...
2017: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/28245457/steroids-and-autoimmunity
#4
REVIEW
Amelia Chiara Trombetta, Marianna Meroni, Maurizio Cutolo
From the middle of the 19th century, it is known that endocrine and immune systems interact bi-directionally in different processes that ensure organism homeostasis. Endocrine and nervous systems have a pivotal role in the balancing of pro- and anti-inflammatory functions of immune system, and constitute a complex circadian neuroendocrine network. Autoimmune diseases have in fact a complex pathogenic origin in which the importance of endocrine system was demonstrated. In this chapter, we will mention the structure and function of steroidal hormones involved in the neuroendocrine immune network and we will address the ways in which endocrine and immune systems influence each other, in a bi-directional fashion...
2017: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/28245456/role-of-cortistatin-in-the-stressed-immune-system
#5
REVIEW
Mario Delgado, Elena Gonzalez-Rey
The immune system is faced with the daunting job of defending the organism against invading pathogens, while at the same time preserving the body integrity and maintaining tolerance to its own tissues. Loss of self-tolerance compromises immune homeostasis and leads to the onset of autoimmune disorders. The identification of endogenous factors that control immune tolerance and inflammation is a key goal for immunologists. Evidences from the last decade indicate that the neuropeptide cortistatin is one of the endogenous factors...
2017: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/28245455/thyroid-autoimmunity-and-cancer
#6
REVIEW
Francesco Felicetti, Maria Graziella Catalano, Nicoletta Fortunati
Cancer and autoimmune diseases are often associated in the same individual. The functional link between the immune system and cancer development is only partially known. Even though the immune system can control the development of cancer through immune surveillance, cancer cell can escape it. It is debated whether autoimmune diseases have to be regarded as a cancer cause or its consequence. In particular, the association between autoimmune thyroiditis and thyroid cancer (TC; especially papillary carcinoma) is a fascinating model of this complex relationship...
2017: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/28245454/leptin-neuroinflammation-and-obesity
#7
REVIEW
Nathalia R V Dragano, Roberta Haddad-Tovolli, Licio A Velloso
Hypothalamic resistance to adipostatic actions of leptin is a hallmark of obesity. Studies have revealed that hypothalamic inflammation, triggered in response to the consumption of large amounts of dietary fat, is an important mechanism in the development of leptin resistance. In this chapter, we will review the work that paved the way linking neuroinflammation of the hypothalamus and defective leptin action in obesity.
2017: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/28245453/a-novel-clinical-entity-of-autoimmune-endocrinopathy-anti-pit-1-antibody-syndrome
#8
REVIEW
Genzo Iguchi, Hironori Bando, Yutaka Takahashi
Pituitary-specific transcription factor 1 (PIT-1; POU domain, class 1, transcription factor 1 (POU1F1)) is an essential transcription factor for the differentiation of somatotrophs, lactotrophs, and thyrotrophs, and for the expression of growth hormone (GH), prolactin (PRL), and thyroid-stimulating hormone (TSH). Mutations in PIT-1 cause congenital defects in GH and PRL secretion and severe TSH insufficiency. Anti-PIT-1 antibody syndrome, firstly reported in 2011, is characterized by acquired GH, PRL, and TSH deficiencies without PIT-1 mutation and is associated with the presence of the circulating antibody against PIT-1 protein as a marker...
2017: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/28245452/prolactin-an-immunomodulator-in-health-and-disease
#9
REVIEW
Wilson Savino
Various lines of evidence show that prolactin (PRL) is an immunomodulator in health and disease. Cells of the immune system express PRL receptors and respond to the cognate ligand. Also, PRL itself is produced by several immune cells, indicating that in addition to its classic endocrine effects, it may also act via paracrine/autocrine pathways. PRL stimulates B and T lymphocyte proliferation, and its excess is associated with the appearance or recrudescence of various systemic and organ-specific autoimmune diseases, as demonstrated by experimental studies performed in mice, and by human case reports and case control studies...
2017: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/28245451/pituitary-autoimmunity
#10
REVIEW
Federica Guaraldi, Roberta Giordano, Silvia Grottoli, Lucia Ghizzoni, Emanuela Arvat, Ezio Ghigo
Pituitary autoimmunity, considered a synonym of autoimmune hypophysitis, defines a wide spectrum of conditions (neoplastic, functional, and iatrogenic pituitary disorders; and extra-pituitary autoimmune and non-autoimmune diseases), and is characterized by the presence of antipituitary antibodies (APAs) at various titer and prevalence. These conditions have been increasingly recognized not only in adults, but also in children. The autoimmune pathogenesis, histological features of the primary (i.e. lymphocytic, granulomatous, xanthomatous, IgG-4 related lymphoplasmacytic, and necrotizing) forms, and the pathognomonic association of lymphocytic hypophysitis with pregnancy and CTLA-4 antibody therapy, have been clearly demonstrated...
2017: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/28245450/intrahypophyseal-immune-endocrine-interactions-endocrine-integration-of-the-inflammatory-inputs
#11
REVIEW
U Renner, M Sapochnik, K Lucia, G K Stalla, E Arzt
Endotoxin (lipopolysaccharide, LPS) of gram-negative bacteria has been recognized for more than 40 years as a modulator of anterior pituitary hormone production. The action of LPS was thought to be predominantly mediated through LPS-stimulated immune cell-derived cytokines, and is part of the concept of immune-endocrine crosstalk, which regulates bidirectional adaptive processes between the endocrine and immune systems during inflammatory or infectious processes. With the detection of innate immune system components in the normal and tumoral pituitary, including the Toll-like receptor 4, the target of LPS, it has become evident that LPS can directly modify the physiology and pathophysiology of the anterior pituitary...
2017: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/28245449/inflammation-and-thymus-ageing
#12
REVIEW
A Lepletier, A Alsharif, Ann P Chidgey
The thymus is primarily responsible for T cell production. However, it begins to recede in size and function, from early in life. This decreased generation of naive T cells during normal thymus ageing, or linked with pathology (i.e. chronic inflammation), leads to reduced T cell specificities, peripheral T cell imbalances, and higher susceptibilities to infections. Various clinical strategies for thymus and T cell recovery have been investigated, although no effective clinical treatments for the reconstitution of peripheral T cell diversity in severe immune deficiencies are available...
2017: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/28245448/immune-neuro-endocrine-reflexes-circuits-and-networks-physiologic-and-evolutionary-implications
#13
REVIEW
Adriana Del Rey, Hugo O Besedovsky
The existence of a network of interactions between the immune and nervous systems that influences host defenses and brain functions is now well-established. Here we discuss how immune and classical neuro/sensorial signals are processed in the brain and how neuro-endocrine immunoregulatory and behavioral responses are integrated. Considering the ability of brain cells to produce cytokines, originally described as immune cell products, we propose that the tripartite synapse plays a central role in the integration of neuro-endocrine-immune interactions...
2017: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/27348867/impact-of-physical-exercise-on-endocrine-aging
#14
Joseph A M J L Janssen
Physical exercise may be vital to the maintenance of the endocrine system with aging and its helps to restore loss of activity of the endocrine system with aging. There is evidence that physical exercise induces activity of the growth hormone-insulin-like growth factor-1 axis and so produces anabolic effects in skeletal muscles. Mechano growth factor (MGF), a locally produced isoform of IGF-1, has been hypothesized to be important for the maintenance of skeletal muscles with aging. Short-term high-resistance exercise results in an increase of MGF mRNA in young but not in elderly subjects...
2016: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/27348816/endocrine-responses-to-exercise-in-the-developing-child-and-adolescent
#15
REVIEW
Erick Richmond, Alan D Rogol
The impact of exercise training on the neuroendocrine control of the pituitary in the developing child is complex and the exact mechanisms are not fully understood. Multiple determinants influence adaptive hypothalamic-pituitary secretory responses to physical stress, namely, training intensity and duration, nutrition and energy balance, gender, age, sex, and sexual maturation status. The increase in growth hormone (GH) in response to acute exercise is dependent on pubertal status; children in more advanced pubertal stages respond with larger peak GH concentrations compared to those in earlier stages...
2016: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/27348753/metabolic-effects-of-exercise
#16
Paolo Moghetti, Elisabetta Bacchi, Corinna Brangani, Silvia Donà, Carlo Negri
Exercise has a powerful action on metabolism, and adaptation of the body to changes induced by exercise is fundamental to be able to provide the energy required for muscle contraction and physiological functions of vital tissues. Depending on the intensity and duration of exercise, different mechanisms are called on to make energy available, and under homeostatic control, this is guaranteed by rapid and coordinated changes in the secretion of several hormones. Molecular mechanisms controlling muscle function and fiber phenotype are related to the specific mode of muscle activation...
2016: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/27348623/exercise-training-and-the-hypothalamic-pituitary-gonadal-axis-in-men-and-women
#17
Natalia Cano Sokoloff, Madhusmita Misra, Kathryn E Ackerman
The hypothalamic-pituitary-gonadal (HPG) axis is essential for adequate responses to exercise and training both acutely and chronically. Both testosterone and estrogen play leading roles in neuromuscular adaptation to exercise in males and females. The purpose of this chapter is to illustrate the physiological and pathological changes that occur in the HPG axis secondary to exercise and training. In males, testosterone increases with acute bouts of exercise, but long-term effects are less clear, with evidence of lower testosterone in endurance athletes...
2016: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/27348531/exercise-and-the-hypothalamo-pituitary-adrenal-axis
#18
Martine Duclos, Antoine Tabarin
Exercise represents a potent physiological stimulus upon the hypothalamo-pituitary adrenal (HPA) axis. Two major factors modulate the HPA axis response to exercise: intensity and duration. Endurance training per se does not induce permanent hypercortisolism as endurance-trained subjects have similar biological markers of HPA axis activity in resting condition as healthy untrained men. However, during a challenge of the HPA axis, endurance-trained subjects demonstrate an adaptation of the HPA axis activity to repeated exercise resulting from decreased tissular sensitivity to glucocorticoids...
2016: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/27348437/growth-hormone-insulin-like-growth-factor-axis-thyroid-axis-prolactin-and-exercise
#19
Anthony C Hackney, Hope C Davis, Amy R Lane
This chapter addresses what is known about the endocrine system components growth hormone (GH)-insulin-like growth factor (IGF) axis, thyroid axis, and prolactin relative to exercise and exercise training. Each one of these hormone axes contributes to the maintenance of homeostasis in the body through impact on a multitude of physiological systems. The homeostatic disruption of exercise causes differing responses in each hormone axis. GH levels increase with sufficient stimulation, and IGFs are released in response to GH from the anterior pituitary providing multiple roles including anabolic properties...
2016: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/27348309/methods-for-doping-detection
#20
Federico Ponzetto, Sylvain Giraud, Nicolas Leuenberger, Julien Boccard, Raul Nicoli, Norbert Baume, Serge Rudaz, Martial Saugy
Over the past few years, the World Anti-Doping Agency (WADA) has focused its efforts on detecting not only small prohibited molecules, but also larger endogenous molecules such as hormones, in the view of implementing an endocrinological module in the Athlete Biological Passport (ABP). In this chapter, the detection of two major types of hormones used for doping, growth hormone (GH) and endogenous anabolic androgenic steroids (EAASs), will be discussed: a brief historical background followed by a description of state-of-the-art methods applied by accredited anti-doping laboratories will be provided and then current research trends outlined...
2016: Frontiers of Hormone Research
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