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Psychosocial stress affects the relationship between prolactin (PRL) and cortisol (CORT). The dynamics of PRL and CORT changes under stress in human milk (HM) are largely unknown. We investigated how maternal stress related to recent life changes affects milk CORT and PRL concentrations. The study involved 116 mothers exclusively breastfeeding 5-month-old infants. Maternal psychological stress was evaluated using the Recent Life Changes Questionnaire (RLCQ). Stress response was determined by administering the cold pressor test and measuring CORT in saliva taken during and in milk collected after the test. Hormones concentrations were assayed using the ELISA method. The hierarchical regression models were run to test the association between maternal RLCQ, salivary CORT, and PRL, and CORT in milk. Maternal RLCQ correlated positively with the CORT in saliva, however, no direct association was found between RLCQ and PRL. After controlling for covariates, a positive association was found between salivary and milk CORT. A negative relationship was observed between salivary CORT and milk PRL. The results of the present study indicate that maternal psychological stress may affect the relationship between CORT and PRL in HM. In response to psychological stress, both hormones transported via milk can program infant development in the early postnatal period. [ABSTRACT FROM AUTHOR]

Aim Methods Results Conclusion Research on the effects of methylphenidate on female fertility is limited. This study evaluated the effects of methylphenidate on reproductive function, oxidants, antioxidants, proinflammatory cytokines, prolactin, and cortisol in female rats.Forty‐eight albino Wistar female rats were divided into four groups consisting of 12 rats, which were given pure water orally once daily for 7 days (HG‐1), 10 mg/kg methylphenidate orally once daily for 7 days (MP‐1), pure water orally once daily for 30 days (HG‐2), and 10 mg/kg methylphenidate orally once daily for 30 days (MP‐2). At the end of the treatment periods, tail vein blood was collected from six rats per group for prolactin and cortisol determination. Subsequently, euthanasia was performed and the ovaries were removed. Ovaries were analyzed for malondialdehyde (MDA), total glutathione (tGSH), superoxide dismutase (SOD), catalase (CAT), interleukin‐1 beta (IL‐1β), and tumor necrosis factor‐alpha (TNF‐α), and immunohistochemically. For breeding, the remaining six rats were mated with male rats for 1 month. Rats that failed to give birth were classed as infertile.A comparison of MP‐1 and MP‐2 groups to healthy controls revealed an elevation in MDA and corticosterone levels, and a decline in tGSH, SOD, and CAT levels (p < 0.001). Methylphenidate did not affect prolactin, IL‐1β, and TNF‐α levels (p > 0.05). MP‐1 and MP‐2 exhibited immunopositivity for 8‐hydroxy‐2'‐deoxyguanosine (8‐OHDG). MP‐2 rats developed 66.7% infertility while MP‐1, HG‐1, and HG‐2 rats did not.In ovaries, methylphenidate caused oxidative stress, but did not induce inflammation. Long‐term use of methylphenidate caused increased cortisol levels and infertility. [ABSTRACT FROM AUTHOR]

Hemerocallis citrina Borani is a traditional folk food used to promote the lactation of postpartum mothers in China; however, the active ingredients and corresponding mechanisms are still unknown. In this study, the lactogenic effect of alcoholic and aqueous extracts of H. citrina was primarily evaluated, and the aqueous extract (1,000 and 2,000 mg/kg) displayed significant lactation-promoting effects. Three eluates of the aqueous extract (0%, 30%, and 50%HCW) were further evaluated for their lactogenic effect, and 30% and 50% HCW showed significant lactation-promoting activity. Nineteen ingredients, including those with a high content of rutin and isoquercetin, were then identified from 30% and 50%HCW using the ultra-performance liquid chromatography-quadrupole-time-of-flight-mass spectrometry (UPLC-Q-TOF-MS) method. Finally, the lactogenic effect of rutin and isoquercetin was evaluated, and both compounds displayed significant lactation-promoting activity. The mechanisms relative to the lactation-promoting active ingredients for H. citrina extracts and compounds are to stimulate the release of prolactin (PRL) and progesterone (P), as well as to induce the expression of prolactin receptor (PRLR) and improve the morphology of mammary tissue. This study first clarified the lactation-promoting active ingredients of H. citrina and the corresponding mechanisms, which provide a new insight into the new lactation-promoting drug and promote the high-value utilization of H. citrina resources. [ABSTRACT FROM AUTHOR]

Pituitary adenomas are very common representing 18.1% of all brain tumors and are the second most common brain pathology. Transsphenoidal surgery is the mainstay of treatment for all pituitary adenomas except for prolactinomas which are primarily treated medically with dopamine agonists. A thorough endocrine evaluation of pituitary adenoma preoperatively is crucial to identify hormonal compromise caused by the large sellar mass, identifying prolactin‐producing tumors and comorbidities associated with Cushing and acromegaly to improve patient care and outcome. Transsphenoidal surgery is relatively safe in the hands of experienced surgeons, but still carries a substantial risk of causing hypopituitarism that required close follow‐up in the immediate postoperative period to decrease mortality. A multidisciplinary team approach with endocrinologists, ophthalmologists, and neurosurgeons is the cornerstone in the perioperative management of pituitary adenomas. [ABSTRACT FROM AUTHOR]

To maintain internal ion balance in marine environments, teleost fishes leverage seawater (SW)-type ionocytes to actively secrete Na+ and Cl− into the environment. It is well established that SW-type ionocytes use apically expressed cystic fibrosis transmembrane conductance regulator 1 (Cftr1) as a conduit for Cl− to exit the gill. Here, we investigated whether the Ca2+-activated Cl− channel, anoctamin 1 (Ano1), provides an additional path for Cl−-secretion in euryhaline mummichogs (Fundulus heteroclitus). Two ano1 gene isoforms, denoted ano1.1a and -1.1b, exhibited higher expression in the gill and opercular epithelium of mummichogs long-term acclimated to SW versus fresh water (FW). Branchial ano1.1b and cftr1 expression was increased in mummichogs sampled 24 h after transfer from FW to SW; ano1.1a and -1.1b were upregulated in the gill and opercular epithelium following transfer from SW to hypersaline SW. Alternatively, the expression of ano1.1a, -1.1b, and cftr1 in the gill and opercular epithelium was markedly decreased after transfer from SW to FW. Given its role in attenuating ion secretion, we probed whether prolactin downregulates ano1 isoforms. In addition to attenuating cftr1 expression, a prolactin injection reduced branchial ano1.1a and -1.1b levels. Given how Ano1 mediates Cl− secretion by mammalian epithelial cells, the salinity- and prolactin-sensitive nature of ano1 expression reported here indicates that Ano1 may constitute a novel Cl−-secretion pathway in ionocytes. This study encourages a wider evaluation of this putative Cl−-secretion pathway and its regulation by hormones in teleost fishes. NEW & NOTEWORTHY: In this study, we provide evidence in a teleost fish that the Ca2+-activated Cl− channel, anoctamin 1 may provide an additional path for Cl− secretion by seawater-type ionocytes. Not only is this the first report of a Cftr-independent Cl−-secreting pathway conferring survival in seawater but also the first description of its regulation by the pituitary hormone prolactin. [ABSTRACT FROM AUTHOR]

The uptake of AA in mammary tissues is affected by prolactin (PRL). To investigate whether PRL-induced AA uptake is involved in l -type AA transporter 1 (LAT1), we analyzed the changes of AA in the medium of dairy cow mammary epithelial cells in the presence of PRL or PRL plus heptanecarboxylic acid (BCH), an inhibitor of LAT1. Then Western blot and luciferase assay were used to detect the regulation mechanism of PRL on LAT1 expression and function. Our results showed that Thr, Val, Met, Ile, Leu, Tyr, Lys, Phe, and His are LAT1 substrates and could be transported into mammary epithelial cells via LAT1. PRL stimulation increased the uptake of most AA into mammary epithelial cells of dairy cows, however, inhibition of LAT1 transport activity reduced PRL-induced AA uptake, suggesting that the effect of PRL on AA transport depends on LAT1 expression and function. PRL stimulation upregulated LAT1 expression and plasma membrane location not only in dairy cow mammary epithelial cells, but also in mouse mammary epithelial cell line HC11. Western blot showed that PI3K-AKT-mTOR signaling could be activated in PRL-stimulated mammary epithelial cells. Treatment of cells with LY294002 decreased PI3K-AKT-mTOR activation, as well as LAT1 expression, that in turn decreased milk protein synthesis. Luciferase assay showed PRL treatment increased the promoter activity of LAT1 promoter fragment −419 to −86 bp. Treatment of cells with LY294002, an inhibitor of PI3K, or SC79, an activator of AKT abolished or promoted the transcriptional activity of this promoter fragment in the presence of PRL. These results suggested that the −419 to −86 bp fragment of LAT1 promoter mediates the action of PI3K-AKT-mTOR signaling on LAT1 transcription in mammary epithelial cells of dairy cows, which in turn increased LAT1 expression and AA uptake. The list of standard abbreviations for JDS is available at adsa.org/jds-abbreviations-24. Nonstandard abbreviations are available in the Notes. [ABSTRACT FROM AUTHOR]

Nowadays, the use of food additives, such as Sunset Yellow (SY), is growing, which attracted attention to the potential relationship between some diseases and food additives. The study aimed to investigate the role of Sunset Yellow during chemically-induced mammary gland carcinogenesis in Sprague–Dawley rats. Three groups of female rats were intraperitoneally administered with N-methyl-N-nitrosourea (MNU). Group 1 was set on a basal diet. Group 2 was treated with 161.4 mg\kg\day Sunset Yellow (SY). Group 3 was given SY at 80.7 mg\kg\day. Groups 4–6 were not administered MNU; Group 4 received vehicles only. Groups 5 and 6 were administered SY similarly to groups 2 and 3 respectively. Sunset Yellow at both doses exerted a significant dose-dependent increase in tumor incidences, multiplicities, volumes, and decreased tumor latency as compared with control. Immunolabeling indexes of the proliferating cell nuclear antigen, estrogen receptor alpha, and progesterone receptor were significantly increased after SY treatment. Oxidative stress markers, serum estrogen, progesterone, and prolactin levels were significantly modified by SY treatment. The mRNA expression of estrogen receptor alpha and epidermal growth factor was up-regulated in SY groups versus control. Collectively, SY has significantly promoted MNU-induced mammary tumors in rats with underlying mechanisms correlating SY consumption with estrogen disruption and subsequent antioxidative stress discrepancy. [Display omitted] • Sunset Yellow (SY) is a food coloring dye. • SY has significantly promoted MNU-induced mammary tumors in rats. • SY exaggerated tumor growth via estrogen disruption and subsequent antioxidative stress discrepancy. [ABSTRACT FROM AUTHOR]

Prolactin (PRL) assumes a pivotal role during the postpartum phase, particularly within the hippocampus—a region densely populated with receptors for stress hormones, where stress significantly inhibits adult hippocampal neurogenesis (AHN). The reduction in neurogenesis is implicated in the pathogenesis of anxiety and depression. Mothers are at an increased risk of developing depression when exposed to chronic stress. Therefore, it is imperative to investigate the potential role of PRL in depression-like behaviors stemming from prolonged postpartum stress, and to explore any underlying mechanisms. Despite pup separation (PS) being a natural postpartum care practice, the impact of various PS methods on lactating dams remains uncertain. Lactating C57BL/6J mice, from postpartum day (PPD) 1 to PPD 21, underwent no PS (NPS), brief PS (15 min per day, PS15), or long PS (180 min per day, PS180), followed by 21 days of chronic restraint stress (CRS). Behavioral tests were conducted, and measurements included serum PRL concentration, PRL-R expression, and AHN in the hippocampus. Dams with CRS exhibited cognitive decline, depressive- and anxiety-like behaviors, and reduced PRL secretion, correlating with lower levels of AHN. PS15 dams displayed lower levels of depressive- and anxiety-like behaviors and cognitive decline compared to NPS and PS180 dams. Significantly, PS15 dams exhibited higher levels of AHN, PRL-R expression in the hippocampus, and serum PRL concentration. This study collectively reveals reduced serum PRL and AHN in dams with cognitive decline and depressive- and anxiety-like behaviors after CRS. Brief PS confers resistance to behavioral deficits after CRS, increasing serum PRL concentration and reversing AHN decrease in dams. [ABSTRACT FROM AUTHOR]

Background: Circulating levels of the antiangiogenic protein, vasoinhibin, derived from the proteolytic cleavage of prolactin (PRL), in prolactinoma are unknown, as is the molecular nature of its isoforms. Dimerization of recombinant vasoinhibin has been reported. Methods: Vasoinhibin in a human serum sample was identified by using preparative electrophoresis with subsequent SDS-PAGE and Western blot analysis, as well as mass spectrometry (MS) and ELISA. Results: MS identified a partial vasoinhibin sequence in a 14-kDa protein band from human serum, which eluted in the 28-kDa fraction from the preparative electrophoresis. Measurement of vasoinhibin levels by ELISA identified a concentration of 284 ng/mL at a PRL level of 9,850 ng/mL. Recombinant human vasoinhibin demonstrated dimerization and multimerization when analyzed directly by SDS-PAGE and Western blot analysis under reducing and non-reducing conditions, as well as after immunoprecipitation. Conclusions: The vasoinhibin sequence was identified in a higher molecular weight fraction, corroborating experimental evidence showing the dimerization and aggregation of recombinant human vasoinhibin. This report is significant, regarding the higher risk of cardiovascular disease and mortality in male patients with hyperprolactinemia as well as emerging reports of linking PRL and vasoinhibin levels in patients with prolactinoma with left ventricular dysfunction and Takotsubo syndrome. [ABSTRACT FROM AUTHOR]

Background and hypothesis Breast cancer is more prevalent in women with severe mental illness than in the general population, and use of prolactin-increasing antipsychotics may be a contributing factor. Study design A nested case–control study was conducted using the Swedish nationwide registers (inpatient/outpatient care, sickness absence, disability pension, prescribed drugs, cancers). All women aged 18–85 years with schizophrenia/schizoaffective/other nonaffective psychotic disorder/bipolar disorder and breast cancer (cases) were matched for age, primary psychiatric diagnosis, and disease duration with five women without cancer (controls). The association between cumulative exposure to prolactin-increasing/prolactin-sparing antipsychotics and breast cancer was analyzed using conditional logistic regression, adjusted for comorbidities and co-medications. Study results Among 132 061 women, 1642 (1.24%) developed breast cancer between 2010 and 2021, at a mean age of 63.3 ± 11.8 years. Compared with 8173 matched controls, the odds of breast cancer increased in women with prior exposure to prolactin-increasing antipsychotics for 1–4 years (adjusted odds ratio [aOR] = 1.20, 95% confidence interval [CI] = 1.03–1.41), and for ≥ 5 years (aOR = 1.47, 95%CI = 1.26–1.71). There were no increased or decreased odds of breast cancer with exposure to prolactin-sparing antipsychotics of either 1–4 years (aOR = 1.17, 95%CI = 0.98–1.40) or ≥5 years (aOR = 0.99, 95%CI = 0.78–1.26). The results were consistent across all sensitivity analyses (ie, according to different age groups, cancer types, and primary psychiatric diagnosis). Conclusions Although causality remains uncertain, exposure to prolactin-elevating antipsychotics for ≥ 1 year was associated with increased odds of breast cancer in women with severe mental illness. When prescribing antipsychotics, a shared decision-making process should consider individual risk factors for breast cancer. [ABSTRACT FROM AUTHOR]

This article provides an updated review of hypopituitarism (HP), an endocrine disorder characterized by a deficiency of one or more pituitary hormones. The various etiologies are reviewed, including pituitary neuroendocrine tumors (PitNETs), hypothalamic lesions, genetic mutations, and acquired factors such as head trauma, medications, neoplasms, and infiltrative diseases. It is noted that PitNETs are responsible for approximately half of the cases in adults, whereas in children the causes are predominantly congenital. Diagnosis is based on clinical evaluation and hormonal testing, with identification of the specific hormonal deficiencies essential for effective treatment. Laboratory tests present challenges and limitations that must be understood and addressed. Hormone replacement therapy is the mainstay of treatment, significantly improving patients' quality of life. It is important to know the possible interactions between hormone replacement therapies in HP. Recent advances in understanding the pathophysiology of HP and the importance of a multidisciplinary approach to the management of associated complications are discussed. This article emphasizes the need for comprehensive evaluation and continuous follow-up to optimize outcomes in patients with HP and highlights the importance of ongoing research to improve diagnostic and treatment strategies. [ABSTRACT FROM AUTHOR]

Hemerocallis citrina Borani is a traditional folk food used to promote the lactation of postpartum mothers in China; however, the active ingredients and corresponding mechanisms are still unknown. In this study, the lactogenic effect of alcoholic and aqueous extracts of H. citrina was primarily evaluated, and the aqueous extract (1,000 and 2,000 mg/kg) displayed significant lactationpromoting effects. Three eluates of the aqueous extract (0%, 30%, and 50%HCW) were further evaluated for their lactogenic effect, and 30% and 50%HCWshowed significant lactation-promoting activity. Nineteen ingredients, including those with a high content of rutin and isoquercetin, were then identified from 30% and 50%HCW using the ultra-performance liquid chromatography-quadrupole-time-of-flight-mass spectrometry (UPLC-Q-TOF-MS) method. Finally, the lactogenic effect of rutin and isoquercetin was evaluated, and both compounds displayed significant lactation-promoting activity. The mechanisms relative to the lactation-promoting active ingredients for H. citrina extracts and compounds are to stimulate the release of prolactin (PRL) and progesterone (P), as well as to induce the expression of prolactin receptor (PRLR) and improve the morphology of mammary tissue. This study first clarified the lactation-promoting active ingredients of H. citrina and the corresponding mechanisms, which provide a new insight into the new lactation-promoting drug and promote the high-value utilization of H. citrina resources. [ABSTRACT FROM AUTHOR]

Background: Premenstrual Syndrome (PMS) is a condition affecting up to 47.8 per cent of women of reproductive age with severe symptoms occurring in 3-8 per cent. it is characterised by a range of emotional, physical, and behavioral symptoms occurring in the Luteal phase of the menstrual cycle. Symptoms include mood swings, bloating, fatigue, irritability and depression, significantly impacting daily life. Despite its prevalence, the etiology and pathophysiology of PMS remain poorly understood. This study aims to investigate the Comparison of Hormonal parameters between normal and PMSaffected women in the Luteal phases of the menstrual cycle, thereby shedding light on the physiological underpinnings of PMS. Objective: The study aims to compare hormonal parameters and an electrolyte between normal and PMS-affected women of reproductive age. Material and methods: This study was conducted on 80 women of which 40 were normal Control and 40 were as study population with PMS Symptoms, in the Department of Physiology in Collaboration Obstetrics & Gynecology department at Index Medical College Hospital and Research Centre, Malwanchal University, Indore. This study was carried out for three years from July 2021 to April 2024. Observation and Result: In this study, we have calculated the mean and standard deviation of hormonal parameters. The mean estrogen level in control participants is 87.87 and the standard deviation is 29.46. The mean estrogen level in PMS-affected women is 66.5 and the standard deviation of is 21.91. The mean progesterone level in the control group is 1.97 and the standard deviation is 1.18. The mean Progesterone level in PMS-affected women is 1.52 and the standard deviation was 0.91. The mean FSH level in normal females was 2.65 and the standard deviation was 1.11. The mean FSH level in PMS-affected women was 3.03 and Std was 1.5. The mean LH level in normal women was 2.36 and Std 0.9 The mean LH level in PMS affected group was 3.34 and SD 1.42. The mean Prolactin in the control group of women was 6.13 and the standard deviation value was 2.09 The mean value of prolactin in PMS-affected women was 7.7 and the standard deviation was 1.18. The mean TSH level in normal females was 3.47 and the standard deviation was 1.2. The mean TSH level in PMS-affected females was 4.55 and the standard deviation was 1.53. [ABSTRACT FROM AUTHOR]

The endocrine system is an essential regulator of the osmoregulatory organs that enable euryhaline fishes to maintain hydromineral balance in a broad range of environmental salinities. Because branchial ionocytes are the primary site for the active exchange of Na+, Cl−, and Ca2+ with the external environment, their functional regulation is inextricably linked with adaptive responses to changes in salinity. Here, we review the molecular-level processes that connect osmoregulatory hormones with branchial ion transport. We focus on how factors such as prolactin, growth hormone, cortisol, and insulin-like growth-factors operate through their cognate receptors to direct the expression of specific ion transporters/channels, Na+/K+-ATPases, tight-junction proteins, and aquaporins in ion-absorptive (freshwater-type) and ion-secretory (seawater-type) ionocytes. While these connections have historically been deduced in teleost models, more recently, increased attention has been given to understanding the nature of these connections in basal lineages. We conclude our review by proposing areas for future investigation that aim to fill gaps in the collective understanding of how hormonal signaling underlies ionocyte-based processes. [ABSTRACT FROM AUTHOR]

Endometriosis and hyperprolactinaemia are conditions that might lead to infertility as a consequence. The aim of this article was to present the current knowledge about possible relationships between prolactin/hyperprolactinaemia and endometriosis-related infertility. Experimental studies on local prolactin acting as cytokine and relationship of prolactin and endometriotic tissue, as well as clinical studies on hyperprolactinaemia and endometriosis-related infertility suggest the possible role of prolactin in endometriosis-related infertility, but final proof is still missing and the exact pathogenesis of infertility in such cases is still under investigation. Novel strategies in the treatment of endometriosis-related infertility, based on its connection with prolactin such as the use of prolactin receptor antibodies and prolactin receptor antagonists, are under investigation, but adequate clinical studies have yet to be undertaken. [ABSTRACT FROM AUTHOR]

The prolactin receptor (Prlr) is widely expressed in the brain, particularly in the hypothalamus. Prolactin also has an increasing range of well‐characterised effects on central nervous system function. Because of this, over many years, there has been interest in whether the hormone itself is also expressed within the brain, perhaps acting as a neuropeptide to regulate brain function via its receptor in neurons. The aim of this invited review is to critically evaluate the evidence for brain production of prolactin. Unlike the evidence for the Prlr, evidence for brain prolactin is inconsistent and variable. A range of different antibodies have been used, each characterising a different distribution of prolactin‐like immunoreactivity. Prolactin mRNA has been detected in the brain, but only at levels markedly lower than seen in the pituitary gland. Importantly, it has largely only been detected by highly sensitive amplification‐based techniques, and the extreme sensitivity means there is a risk of false‐positive data. Modern in situ hybridisation methods and single‐cell RNA sequencing have not provided supporting evidence, but it is hard to prove a negative! Finally, I acknowledge and discuss the possibility that prolactin might be produced in the brain under specific circumstances, such as to promote a neuroprotective response to cell damage. Collectively, however, based on this analysis, I have formed the opinion that brain production of prolactin is unlikely, and even if occurs, it is of little physiological consequence. Most, if not all of the brain actions of prolactin can be explained by pituitary prolactin gaining access to the brain. [ABSTRACT FROM AUTHOR]

Ischemic stroke is a significant global health issue, ranking fifth among all causes of death and a leading cause of serious long‐term disability. Ischemic stroke leads to severe outcomes, including permanent brain damage and neuronal dysfunction. Therefore, decreasing and preventing neuronal injuries caused by stroke has been the focus of therapeutic research. In recent years, many studies have shown that fluctuations in hormonal levels influence the prognosis of ischemic stroke. Thus, it is relevant to understand the role of hormones in the pathophysiological mechanisms of ischemic stroke for preventing and treating this health issue. Here, we investigate the contribution of the prolactin/vasoinhibin axis, an endocrine system regulating blood vessel growth, immune processes, and neuronal survival, to the pathophysiology of ischemic stroke. Male mice with brain overexpression of prolactin or vasoinhibin by adeno‐associated virus (AAV) intracerebroventricular injection or lacking the prolactin receptor (Prlr−/−) were exposed to transient middle cerebral artery occlusion (tMCAO) for 45 min followed by 48 h of reperfusion. Overexpression of vasoinhibin or the absence of the prolactin receptor led to an increased lesion volume and decreased survival rates in mice following tMCAO, whereas overexpression of prolactin had no effect. In addition, astrocytic distribution in the penumbra was altered, glial fibrillary acidic protein and S100b mRNA expressions were reduced, and interleukin‐6 mRNA expression increased in the ischemic hemisphere of mice overexpressing vasoinhibin. Of note, prolactin receptor‐null mice (Prlr−/−) showed a marked increase in serum vasoinhibin levels. Furthermore, vasoinhibin decreased astrocyte numbers in mixed hippocampal neuron–glia cultures. These observations suggest that increased vasoinhibin levels may hinder astrocytes' protective reactivity. Overall, this study suggests the involvement of the prolactin/vasoinhibin axis in the pathophysiology of ischemic stroke‐induced brain injury and provides insights into the impact of its dysregulation on astrocyte reactivity and lesion size. Understanding these mechanisms could help develop therapeutic interventions in ischemic stroke and other related neurological disorders. [ABSTRACT FROM AUTHOR]

Mild breast swelling is frequently observed in newborns during the first postnatal week. Breast enlargement is also observed in a minor proportion of infants beyond the first postnatal week, leading to discussions how to deal with it. Our objective was to review a case series of infants with prolonged breast swelling. We examined five infants with pronounced breast enlargement beyond the first postnatal week and measured human chorionic gonadotropin (HCG), estradiol (E2), follicle-stimulating hormone (FSH), luteinizing hormone (LH), prolactin (PRL), and progesterone (P4) in blood samples and analyzed breast volume by sonographic volume determination in all infants initially and across time. The regression of breast enlargement positively correlated with serum prolactin levels in infants with breast enlargement beyond the first week of life. Complete regression occurred after several weeks and was characterized by normalization of serum prolactin levels. The present study emphasizes the role of prolactin in neonates with pronounced breast enlargement beyond the first week of life. [ABSTRACT FROM AUTHOR]

Different initiatives have been implemented along with the results from and recommendations of multiple international meetings to improve breastfeeding. The most common interventions to improve breastfeeding are education and counseling. Although studies are reporting that breastfeeding education and counseling programs improve breastfeeding results, the lack of breastfeeding rates to reach the targeted levels suggests that there is a requirement for a different approach. In addition to these results, a paradigm shift in education and counseling, which are the most frequently used methods to improve breastfeeding, is necessary. Hence, the philosophy of HypnoBreastfeeding has emerged. This study addresses the origin and development of HypnoBreastfeeding philosophy, its concepts, and the correlations between the concepts and the relevant philosophical claims. [ABSTRACT FROM AUTHOR]

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The diagnosis of pituitary microprolactinomas is often obscured by relatively low levels of elevated prolactin compared to macroprolactinomas. This may lead to varying patterns of medical therapy versus observation. We sought to correlate prolactin levels in suspected microprolactinomas with tumor volumes and clinical outcomes. This was a multicenter retrospective study of patients with pituitary microadenomas with baseline prolactin levels > 18ng/ml for males and > 30ng/ml for females. A linear-mixed model was used to depict changes in tumor volume over time. There were 65 patients with a mean tumor volume of 95.9mm3 and mean prolactin level of 59.4ng/ml. There were significantly higher prolactin levels in patients with tumors above the mean volume versus below (74.0 versus 53.4ng/ml, p = 0.027). 26 patients were observed, 31 were treated with anti-dopaminergic therapy, and 8 had surgery. There were significantly greater baseline prolactin levels for patients who were treated surgically (mean 86.4ng/ml) than those treated medically (mean 61.7 g/ml) or observed (mean 48.5ng/ml) (p = 0.02). Among the 26 patients who were surveilled, 13 patients demonstrated spontaneous tumor shrinkage, 12 remained stable, and 1 patient's tumor grew but was lost to follow-up. Linear mixed modeling demonstrated a statistically significant rate of tumor shrinkage over time of 3.67mm3/year (p = 0.03). When analyzing patients who were observed versus those requiring surgery after initially being surveilled, there were significantly greater baseline PRL/volume ratios in surgical patients versus those observed (8.1 ng/ml/mm3 versus 2.4 ng/ml/mm3, p = 0.025). Suspected microprolactinomas may demonstrate more convincingly elevated prolactin levels when measuring over 95.9mm3. Tumors with baseline prolactin levels over 50ng/ml may be more inclined to undergo medical treatment. In tumors with levels below 50ng/ml, it may be reasonable to undergo surveillance as these tumors tend to spontaneously shrink over time. In tumors that are surveilled, an elevated baseline PRL/volume ratio of > 8 ng/ml/mm3 may be indicate serial tumor growth that may necessitate medical and/or surgical intervention. [ABSTRACT FROM AUTHOR]

Background: Metformin plays a major part in the treatment of polycystic ovarian syndrome.Trials are being conducted to compare the effectiveness of combination of metformin with cabergoline in the treatment of hyperprolactinemia and polycystic ovarian syndrome. Objectives: The purpose of this study is to compare the effectiveness of metformin monotherapy and combination therapy with cabergoline versus metformin for the management of polycystic ovarian syndrome with hyperprolactinemia. Methodology: An extensive search up until 31 May 2024 of electronic databases (PubMed, Registry of Controlled Clinical Trials, Web of Sciences, SCOPUS) to find pertinent studies. An analysis was conducted with both observational data and randomized clinical trials. To compute the standard mean difference, weighted mean difference, odds ratio, and 95% confidence interval, RevMan (v5.3) was utilized. Primary outcomes that were assessed included body-mass index, regular menstruation, weight change, prolactin, testosterone, and dehydroepiandrosterone-sulfate levels. Results: Three randomized controlled trials and 1 observational study, taking a total patient population of n = 535, were part of our final analysis. Prolactin (SMD = −3.23 95% CI: (−4.90, −1.55)) and dehydroepiandrosterone-sulfate levels (SMD = −0.27 95% CI: (−0.52, −0.01)) were significantly lower in the metformin and cabergoline combination therapy group; monthly regularity was also significantly higher (OR = 3.07 95% CI: (2.09, 4.51)). Statistically, there was no significant difference in weight, body-mass index, or testosterone levels. Conclusions: In the treatment of polycystic ovarian syndrome, the combination of metformin and cabergoline significantly lowers prolactin levels and encourages regular menstrual cycles. Although metformin has the potential to suppress testosterone levels, more investigation is required to determine how combination therapy affect dehydroepiandrosterone-sulfate and testosterone levels. It's interesting to note that while neither intervention had a substantial impact on weight or body-mass index, metformin and cabergoline combination therapy outperformed metformin monotherapy in terms of supporting regular menstrual cycles. Customized therapy approaches are essential, and large-scale trials involving a variety of groups are required to comprehend the safety and effectiveness of treatments. Plain language summary: Efficacy of metformin compared to metformin and cabergoline combination In this study, 2 therapies for women with high prolactin levels—a hormone associated with PCOS—were examined. Their goal was to determine which combination of metformin and cabergoline produced the best results.Observational data and randomized clinical trials were included while searching through several databases for pertinent studies. Researchers discovered that the combination of metformin and cabergoline was superior to using metformin alone in reducing prolactin and another hormone called DHEAS. The menstrual periods of women receiving the combined therapy were also more regular. However, there wasn't much difference in weight, body mass index (BMI), or testosterone levels between the 2 groups. In summary, it appears that the combination of cabergoline and metformin is a more effective way to treat the symptoms of PCOS, which include irregular periods and elevated prolactin levels. To find out how it impacts other hormones and whether it's long-term safe and effective, further research is still required. [ABSTRACT FROM AUTHOR]

Background: Mammographic density has been associated with breast cancer risk, and is modulated by established breast cancer risk factors, such as reproductive and hormonal history, as well as lifestyle. Recent epidemiological and biological findings underscore the recognized benefits of breastfeeding in reducing breast cancer risk, especially for aggressive subtypes. Current research exploring the association among mammographic density, breastfeeding, and breast cancer is sparse. Main findings: Changes occur in the breasts during pregnancy in preparation for lactation, characterized by the proliferation of mammary gland tissues and the development of mammary alveoli. During lactation, the alveoli fill with milk, and subsequent weaning triggers the involution and remodeling of these tissues. Breastfeeding influences the breast microenvironment, potentially altering mammographic density. When breastfeeding is not initiated after birth, or is abruptly discontinued shortly after, the breast tissue undergoes forced and abrupt involution. Conversely, when breastfeeding is sustained over an extended period and concludes gradually, the breast tissue undergoes slow remodeling process known as gradual involution. Breast tissue undergoing abrupt involution displays denser stroma, altered collagen composition, heightened inflammation and proliferation, along with increased expression of estrogen receptor α (ERα) and progesterone receptor. Furthermore, elevated levels of pregnancy-associated plasma protein-A (PAPP-A) surpass those of its inhibitors during abrupt involution, enhancing insulin-like growth factor (IGF) signaling and collagen deposition. Prolactin and small molecules in breast milk may also modulate DNA methylation levels. Drawing insights from contemporary epidemiological and molecular biology studies, our review sheds light on how breastfeeding impacts mammographic density and explores its role in influencing breast cancer. Conclusion: This review highlights a clear protective link between breastfeeding and reduced breast cancer risk via changes in mammographic density. Future research should investigate the effects of breastfeeding on mammographic density and breast cancer risk among various ethnic groups and elucidate the molecular mechanisms underlying these associations. Such comprehensive research will enhance our understanding and facilitate the development of targeted breast cancer prevention and treatment strategies. [ABSTRACT FROM AUTHOR]

Background: Epithelial ovarian cancer (EOC) is the deadliest gynaecological cancer with high mortality rates driven by the common development of resistance to chemotherapy. EOC frequently invades the omentum, an adipocyte-rich organ of the peritoneum and omental adipocytes have been implicated in promoting disease progression, metastasis and chemoresistance. The signalling mechanisms underpinning EOC omentum tropism have yet to be elucidated. Methods: Three-dimensional co-culture models were used to explore adipocyte-EOC interactions. The impact of adipocytes on EOC proliferation, response to therapy and invasive capacity was assessed. Primary adipocytes and omental tissue were isolated from patients with ovarian malignancies and benign ovarian neoplasms. Exosomes were isolated from omentum tissue conditioned media and the effect of omentum-derived exosomes on EOC evaluated. Exosomal microRNA (miRNA) sequencing was used to identify miRNAs abundant in omental exosomes and EOC cells were transfected with highly abundant miRNAs miR-21, let-7b, miR-16 and miR-92a. Results: We demonstrate the capacity of adipocytes to induce an invasive phenotype in EOC populations through driving epithelial-to-mesenchymal transition (EMT). Exosomes secreted by omental tissue of ovarian cancer patients, as well as patients without malignancies, induced proliferation, upregulated EMT markers and reduced response to paclitaxel therapy in EOC cell lines and HGSOC patient samples. Analysis of the omentum-derived exosomes from cancer patients revealed highly abundant miRNAs that included miR-21, let-7b, miR-16 and miR-92a that promoted cancer cell proliferation and protection from chemotherapy when transfected in ovarian cancer cells. Conclusions: These observations highlight the capacity of omental adipocytes to generate a pro-tumorigenic and chemoprotective microenvironment in ovarian cancer and other adipose-related malignancies. [ABSTRACT FROM AUTHOR]

Objectives: To investigate the effect of aripiprazole on prolactin levels in patients with schizophrenia and analyze whether varying baseline prolactin levels affect the effectiveness and safety of aripiprazole, in a real-life diagnostic and therapeutic setting in a post-hoc analysis. Methods: In this post-hoc analysis, patients with schizophrenia in the acute phase were divided into an elevated-prolactin group and a normal-prolactin group. After 8 weeks of aripiprazole treatment, changes in the proportion of patients with an abnormal prolactin level were analyzed in both groups, and the efficacy and safety of aripiprazole were compared between the two groups. Results: The elevated-prolactin group had more women, a longer duration of disease, and lower Positive and Negative Syndrome Scale (PANSS) total and subscale scores at baseline compared with the normal-prolactin group (all P < 0.05), and there was no significant difference in the proportion of patients with prior use of antipsychotic medication between the two groups. Regardless of previous antipsychotic use, patients in both groups developed hyperprolactinemia (23/168 [13.7%] in those who had taken antipsychotics vs. 43/375 [11.4%] in those who had not). After 8 weeks of aripiprazole treatment, the proportion of patients with abnormal prolactin in the elevated-prolactin group significantly decreased with prolonged treatment (P < 0.001), and aripiprazole had no significant effect on the normal-prolactin group (P = 0.250). Normalprolactin group showed better efficacy than the elevated-prolactin group, and the differences in efficacy between the two groups was observed from week 4 to the endpoint (all p<0.05). In total, 87.2% (68/78) patients experienced mild to moderate adverse events in the elevated-prolactin group, which was significantly more frequent compared with the normal-prolactin group 71.0% (365/514). Conclusions: In this real-world study, for patients with acute schizophrenia, aripiprazole was effective in lowering the proportion of patients with abnormal prolactin levels, while it had no significant effect on patients with normal baseline prolactin. After adjusting for factors such as sex, age, prior antipsychotic drugs use history and disease severity, effectiveness and safety of aripiprazole in patients with normal baseline prolactin was significantly better than that in patients with elevated baseline prolactin. [ABSTRACT FROM AUTHOR]

Objective: Major depressive disorder (MDD) is often accompanied by psychotic symptoms. However, few studies have examined the relationship between psychotic symptoms and endocrine factors in adolescent patients with MDD. Therefore, this study aimed to investigate the prevalence and related endocrine clinical factors of psychotic symptoms in Chinese adolescent patients with MDD. Methods: In total, 601 patients (aged 12–18) with MDD were recruited. The Patient Health Questionnaire – 9 items (PHQ – 9) was utilized for assessing depressive symptoms. Psychotic symptoms were assessed through clinical interviews. Prolactin (PRL), thyroid-stimulating hormone (TSH), triiodothyronine (T3), free triiodothyronine (FT3), thyroxine (T4), and free thyroxine (FT4) were also measured. Results: The incidence of psychotic symptoms in adolescent patients with MDD was 22.6%. The findings demonstrated that age, self-harming behavior, PHQ-9 score, FT4, and normalized PRL were independently associated with psychotic symptoms in patients with MDD (All p < 0.05). Conclusions: PRL and FT4 levels are more likely to be abnormally elevated in major depressive adolescents with psychotic symptoms. Prolactin and thyroid hormones in patients with MDD should be paid more attention. [ABSTRACT FROM AUTHOR]

It has been revealed previously that chronic liver disease (CLD) may be associated to hormonal fluctuations. The current study, therefore, aimed to evaluate some hormones in CLD patients compared with non-CLD individuals. This case control study was conducted at Gastroenterology and Hepatology Teaching Hospital, Medical city, Baghdad, Iraq during December 2021 to May 2022. One hundred and twenty male patients with CLD (age:14-75 years) and 120 control males (age: 24-70 years) were involved in this study. Serum samples were taken from all individuals and were then analysed for many tests which included hormones (Cortisol, testosterone, prolactin, insulin and thyroid stimulating hormone TSH); biochemical analysis (Prothrombin time PT, international normalized ratio INR and albumin); liver enzymes (aspartate aminotransferase AST, alanine aminotransferase ALT, alkaline phosphatase ALP and gamma glutamyl transferase (GGT)) and interleukins (Interleukin 13 IL-13 and transforming growth factor TGF). Some hormones such as cortisol, prolactin and insulin significantly increased in CLD patients while other hormones (testosterone and TSH) significantly decreased in CLD patients compared with the controls. Results also showed significant increase in liver enzymes among CLD patients. These changes in the hormones and liver enzymes levels may be related with significant increase in INR and albumin which were significantly higher in CLD patients than in the control group. Finally, IL-13 increased significantly in CLD patients while no significant differences were noticed between CLD and control regarding TGF levels. It can, therefore, be concluded that hormonal imbalance can affect people with liver conditions. and that this hormonal imbalance may be associated with high levels of liver enzymes. [ABSTRACT FROM AUTHOR]

Sex-related differences in the expression of genes encoding prolactin (Prl1) in the brain and its receptors (PrlRa and PrlRb) in the brain, kidneys, gills, and intestine of the three-spined stickleback (Gasterosteus aculeatus L.) were studied in the context of freshwater adaptation. Males and females of the marine morph were adapted to freshwater for 72 h, and Prl1, PrlRa and PrlRb expression levels were assessed using RT-qPCR. In seawater, no sex differences in Prl1 expression in the brain were detected, but they appeared after freshwater adaptation due to significantly increased Prl1 expression in females. In seawater, PrlRa expression in the brain of females was significantly lower compared to males, but increased significantly after freshwater adaptation, becoming comparable in both sexes. PrlRb expression in the brain increased significantly in females following freshwater adaptation. In the kidneys, PrlRa expression was indistinguishable between females and males in either seawater or freshwater, but significantly decreased after freshwater adaptation in both sexes. PrlRb expression in the kidneys was sex-independent in seawater, but freshwater adaptation led to its significant increase in females and a decrease in males. In the gills, PrlRa and PrlRb expression was independent of both sex and salinity. In the intestine, PrlRa expression did not depend on either sex or salinity, whereas PrlRb gene expression also showed no sex differences, while decreasing in both sexes after transitioning to freshwater. It is concluded that the dependence of the prolactin osmoregulatory function on the sex of sticklebacks is manifested in sex differences in prolactin gene expression in the brain, as well as in the sensitization of the brain and osmoregulatory organs to this hormone during freshwater adaptation. [ABSTRACT FROM AUTHOR]

The objective of this study is to conduct a bibliometric analysis of research trends in hyperprolactinemia from 2011 to 2023. This analysis aims to provide researchers with insights into the current hotspots and frontiers related to hyperprolactinemia. It is worth noting that there are currently no existing reports on bibliometric analyses of hyperprolactinemia. The Social Science Citation Index (SSCI) and Science Citation Index Expanded (SCIE) databases of the Web of Science Core Collection were systematically searched for "articles" and "review articles" related to the topic of hyperprolactinemia from 2011 to 2023. VOSviewer was employed to conduct bibliometric analysis, aiming to analyze the research trends in hyperprolactinemia over the past 13 years. A total of 1865 eligible articles were retrieved, with contributions from 9544 scholars representing 83 countries in the field of research. The United States had the highest number of publications, followed by China. The keywords were categorized into six clusters: (1) etiology of hyperprolactinemia and other related endocrine and metabolic diseases. (2) Hyperprolactinemia and mental illness. (3) Diagnosis and management of hyperprolactinemia. (4) Treatment of hyperprolactinemia and prolactinoma. (5) Detection of macroprolactin and macroprolactinemia. (6) Symptoms of male hyperprolactinemia. Over the past 13 years, there has been a consistent and slightly increasing trend in the number of research papers focusing on hyperprolactinemia. The primary areas of research focus are centered around the diagnosis and treatment of hyperprolactinemia caused by antipsychotic drugs or prolactinoma. [ABSTRACT FROM AUTHOR]

Objective: It is suggested that the use of non-invasive and cost effective imaging modalities, including magnetic resonance imaging (MRI), can be beneficial for detecting areas with spermatogenesis and predicting the presence of sperm in testicles, thereby improving the management of patients with azoospermia. Methods: This descriptive and analytical study included 38 patients with azoospermia who presented to the Firoozgar and Hazrat Rasoul Akram Hospitals in Tehran, Iran. The patients underwent MRI, testicular biopsy, and hormonal examination. The data were analyzed and compared between the patients with obstructive azoospermia (OA) and non-obstructive azoospermia (NOA). Results: The present study included 76 testicles from 38 patients with OA (n=14) and NOA (n=24). According to our findings, the patients with OA and NOA did not differ significantly in testosterone (OA: 4.78, NOA: 5.33, p=0.755) and prolactin levels (OA: 10.75, NOA: 9.77, p=0.540). However, those with NOA had significantly higher levels of follicle-stimulating hormone (OA: 4.66, NOA: 20.61, p<0.001) and luteinizing hormone (OA: 3.15, NOA: 12.40, p<0.001), as well as apparent diffusion coefficient (ADC) (OA: 0.96, NOA: 1.16, p<0.001). Moreover, the patients with OA had a significantly higher testis volume (20.37 cm3) compared with those with NOA (8.16 cm3, p<0.001). Additionally, there were significant correlations between pathological grade and the variables of testicular volume (correlation coefficient: 0.672, p<0.001) and ADC (correlation coefficient: 0.480, p<0.001). Finally, the multivariate regression analysis showed a significant relationship between testicular volume and pathological grade. The receiver operating characteristic curves show the performance of ADC [area under curve is 0.954 (95% confidence interval; 0.912-0.995)] between OA and NOA. Conclusion: The MRI-related parameters of ADC and testicular volume help differentiate and diagnose OA and NOA. [ABSTRACT FROM AUTHOR]

Alpha‐fetoprotein (AFP) is a structural serum glycoprotein that plays vital roles in reproduction and mammalian development. Analysis of serum prolactin (PRL) is considered one of the useful methods for diagnosing pregnancy in Asian elephants. However, the expression profiles of AFP in pregnant and nonpregnant Asian elephants remain unclear, nor is the relationship with PRL. In this study, serum seven gonadal hormones and AFP in three pregnant and seven nonpregnant Asian elephants were analysed by via radioimmunoassay (RIA) and enzyme‐linked immunosorbent (ELISA) assay. We found that the mean (±SD) concentration of prolactin (PRL) in pregnant (136.782 ± 30.987 ng/mL) elephants was significantly higher than that in nonpregnant elephants (52.803 ± 21.070 ng/mL; p ≤ 0.0005). The mean (±SD) concentration of AFP in pregnant elephants (11.598 ± 0.824 ng/mL) was significantly higher than that in nonpregnant elephants (7.200 ± 2.283 ng/mL; p ≤ 0.05). Furthermore, the AFP concentration was positively correlated with the PRL concentration in the 10 Asian elephants studied. In conclusion, our findings suggest that serum AFP concentration is a potential biomarker of pregnancy outcomes in Asian elephants. [ABSTRACT FROM AUTHOR]

Polycystic ovary syndrome (PCOS) is a medical condition that affects the function of the ovaries and hormone production in women. It causes symptoms such as irregular menstruation, increased testosterone secretion, weight gain, excessive hair growth and insulin resistance. The causes are not completely known, but genetic, environmental and lifestyle factors play a role. Possible complications include increased risk of heart disease, diabetes, and high blood pressure. It is diagnosed through laboratory tests, such as examining hormones and white blood cells. Recently, studies are focusing on the level of nesfatin-1 protein in PCOS patients, and the results indicate that its levels differ between patients and healthy people, and it is considered a diagnostic tool that needs extensive study. This study aims: Evaluating the histological changes in the ovaries of women with polycystic ovary syndrome and some vital variables. Materials and working methods: 270 blood samples were collected, divided into two groups. The first group included 180 blood samples from women with polycystic ovary syndrome, and the second group included 90 blood samples from healthy women (control samples). The results between the two groups were carefully evaluated, including evaluating the levels of testosterone and follicle-stimulating hormone. As well as evaluating the level of nesfatin-1 and white blood cells between women with polycystic ovary syndrome and healthy women. Results: Our results showed a relatively high level of nesfatin-1 in polycystic ovary syndrome patients compared to healthy controls. The results showed statistically significant differences at the P≤0.05 level The levels of testosterone, follicle-stimulating hormone, luteinizing hormone, and progesterone also showed an increase in affected patients, and it also showed that there was a significant difference at the p level ≥0.05. While the levels of estrogen (E2) and prolactin showed no significant differences at the level of P>0.05. Women with this syndrome had relatively high white blood cell counts compared to unaffected women. Conclusions: Our results indicate a decreased level of nesfatin-1, as nesfatin-1 is a metabolic regulatory protein. The results also showed an increase in both follicle-stimulating hormone and testosterone and a slight increase in white blood cells, which leads to an imbalance in the regulation of hormones and the menstrual cycle and a threat to the reproductive process. [ABSTRACT FROM AUTHOR]

Prolactin, a hormone that has been studied for almost a century, has evolved from a reproductive regulator to a key player in metabolic health. Initially identified for its lactogenic role, the impact of prolactin on glucose and lipid metabolism became evident in the 1970s, leading to a paradigm shift in our understanding. Deviations in prolactin levels, including hyperprolactinaemia and hypoprolactinaemia, have been associated with adverse effects on glucose and lipid metabolism. Mechanistically, prolactin regulates metabolic homoeostasis by maintaining islet abundance, regulating the hypothalamic energy regulatory centre, balancing adipose tissue expansion, and regulating hepatic metabolism. Given the widespread use of pharmaceutical agents that affect prolactin levels, it is important to examine prolactin‐related metabolic effects. Recently, a profound exploration of the intricate metabolic role of prolactin has been conducted, encompassing its rhythm‐dependent regulatory influence on metabolism and its correlation with cognitive impairment associated with metabolic diseases. In this review, we highlight the role of prolactin as a metabolic regulator, summarise its metabolic effects, and discuss topics related to the association between prolactin and metabolic comorbidities. [ABSTRACT FROM AUTHOR]

Background: Researches done over different parts of the world show that hyperprolactinemia in psychotic patients is dependent on many factors such as age, gender, any thyroidal abnormality, drugs such as antipsychotics or antidepressants, psychological stress, and genre of psychosis. In patients taking antipsychotic treatments, prolactin blood levels may rise up to 10 times the normal values. It is very important to differentiate between prolactin-secreting tumor in pituitary and antipsychotic-induced hyperprolactinemia. There has been fewer researches on this topic in Eastern India, so it aims to properly estimate the amount of prolactin rise; a patient has to face after taking anti-psychotic medications and might also help the psychiatrists to adjust the dosage of anti-psychotics or to add some other drugs to lower the prolactin level along with the anti-psychotics in Eastern India. Aim and Objectives: The aims and objectives of the study are to estimate serum prolactin in diagnosed psychiatric patients taking antipsychotic drugs for at least 3 months and to study the difference in serum prolactin between recently diagnosed psychiatric patients taking antipsychotic drugs for at least 3 months and age and gender-matched mentally healthy patients without any psychiatric complication and without any history of in taking antipsychotic drugs. Materials and Methods: The study was conducted over a period of 4 months at Central Laboratory, Dept of Biochemistry, MCK. Before the conduct of the study, informed consent was taken. Patients diagnosed with psychiatric illness and consuming at least one antipsychotic drug for at least 3 months were enrolled after going through inclusion--exclusion criteria. Serum prolactin was measured with help of CLIA (ADVIA CENTAUR). Results: As per our study done in Eastern Indian population, in the female group of psychiatric patients (aged between 18 and 45 years) taking antipsychotics, the prolactin level was 23.6 ± 4.5 ng/ml, and in age-matched control female group, prolactin level was 9.2 ± 3.1 ng/mL, the difference is statistically significant (P < 0.001). Moreover, in male psychiatric patients (aged between 18 and 45 years) taking antipsychotics, the prolactin level was 14.3 ± 1.7 ng/mL, and in age-matched control male group, prolactin level was 8.5 ± 1.5 ng/mL, the difference is statistically significant (P < 0.001). Conclusion: As per our study, psychiatric patients of both gender taking antipsychotic drugs had higher serum prolactin level than age and gender-matched mentally healthy persons not taking antipsychotic drugs. While the limitation of this study was its small sample size, another issue that must be taken into consideration is the fact that prolactin levels can also depend on menstrual cycles in women. In our study, there were 40 (57%) females who were still menstruating. [ABSTRACT FROM AUTHOR]

Most breast cancer deaths are caused by malignant estrogen receptor–positive breast tumors that later recur as metastatic disease. Prolactin (PRL) has been documented as a factor promoting breast cancer development and metastasis. We therefore developed superactive prolactin receptor (PRLR) antagonists aimed at blocking PRL action. We purified 12 novel mutants to homogeneity as monomers, and the most potent antagonist was over 95-fold more active than the previously reported weak antagonist, the mutant Del 1-9 human PRL G129R. This enhanced antagonistic activity resulted mostly from prolonged interaction with the extracellular domain (ECD) of PRLR. All mutants were properly refolded, as indicated by interaction with human PRLR-ECD and by circular dichroism analysis. We then prepared monopegylated variants of the most active mutants to extend their biological half-life in vivo. [ABSTRACT FROM AUTHOR]

Abstract Psychosocial stress affects the relationship between prolactin (PRL) and cortisol (CORT). The dynamics of PRL and CORT changes under stress in human milk (HM) are largely unknown. We investigated how maternal stress related to recent life changes affects milk CORT and PRL concentrations. The study involved 116 mothers exclusively breastfeeding 5-month-old infants. Maternal psychological stress was evaluated using the Recent Life Changes Questionnaire (RLCQ). Stress response was determined by administering the cold pressor test and measuring CORT in saliva taken during and in milk collected after the test. Hormones concentrations were assayed using the ELISA method. The hierarchical regression models were run to test the association between maternal RLCQ, salivary CORT, and PRL, and CORT in milk. Maternal RLCQ correlated positively with the CORT in saliva, however, no direct association was found between RLCQ and PRL. After controlling for covariates, a positive association was found between salivary and milk CORT. A negative relationship was observed between salivary CORT and milk PRL. The results of the present study indicate that maternal psychological stress may affect the relationship between CORT and PRL in HM. In response to psychological stress, both hormones transported via milk can program infant development in the early postnatal period.

Abstract Background Diabetes-associated cognitive dysfunction, characterized by hippocampal synaptic loss as an early pathological feature, seriously threatens patients’ quality of life. Synapses are dynamic structures, and hormones play important roles in modulating the formation and elimination of synapses. The pituitary, the master gland of the body, releases several hormones with multiple roles in hippocampal synaptic regulation. In this study, we aimed to explore the relationship between pituitary hormones and cognitive decline in diabetes. Methods A total of 744 patients with type 2 diabetes (T2DM) (445 men and 299 postmenopausal women) who underwent serum pituitary hormone level assessments, comprehensive cognitive evaluations and MRI scans were enrolled. Dynamic diet interventions were applied in both chow diet-fed mice and high-fat diet (HFD)-fed diabetic mice. The cognitive performance and hippocampal pathology of prolactin (PRL)-knockout mice, neuronal prolactin receptor (PRLR)-specific knockout mice and microglial PRLR-specific knockout mice were assessed. Microglial PRLR-specific knockout mice were fed an HFD to model diabetes. Diabetic mice received an intracerebroventricular infusion of recombinant PRL protein or vehicle. Results This clinical study revealed that decreased PRL levels were associated with cognitive impairment and hippocampal damage in T2DM patients. In diabetic mice, PRL levels diminished before hippocampal synaptic loss and cognitive decline occurred. PRL loss could directly cause cognitive dysfunction and decreased hippocampal synaptic density. Knockout of PRLR in microglia, rather than neurons, induced hippocampal synaptic loss and cognitive impairment. Furthermore, blockade of PRL/PRLR signaling in microglia exacerbated abnormal microglial phagocytosis of synapses, further aggravating hippocampal synaptic loss and cognitive impairment in diabetic mice. Moreover, PRL infusion reduced microglia-mediated synaptic loss, thereby alleviating cognitive impairment in diabetic mice. Conclusion PRL is associated with cognitive dysfunction and hippocampal damage in T2DM patients. In diabetes, a decrease in PRL level drives hippocampal synaptic loss and cognitive impairment by increasing microglia-mediated synapse engulfment. Restoration of PRL levels ameliorates cognitive dysfunction and hippocampal synaptic loss in diabetic mice.

Abstract Objective Major depressive disorder (MDD) is often accompanied by psychotic symptoms. However, few studies have examined the relationship between psychotic symptoms and endocrine factors in adolescent patients with MDD. Therefore, this study aimed to investigate the prevalence and related endocrine clinical factors of psychotic symptoms in Chinese adolescent patients with MDD. Methods In total, 601 patients (aged 12–18) with MDD were recruited. The Patient Health Questionnaire – 9 items (PHQ – 9) was utilized for assessing depressive symptoms. Psychotic symptoms were assessed through clinical interviews. Prolactin (PRL), thyroid-stimulating hormone (TSH), triiodothyronine (T3), free triiodothyronine (FT3), thyroxine (T4), and free thyroxine (FT4) were also measured. Results The incidence of psychotic symptoms in adolescent patients with MDD was 22.6%. The findings demonstrated that age, self-harming behavior, PHQ-9 score, FT4, and normalized PRL were independently associated with psychotic symptoms in patients with MDD (All p

Triphenyl phosphate (TPHP) - a widely used organophosphate-based flame retardant - blocks cardiac looping during zebrafish development in a concentration-dependent manner, a phenotype that is dependent on disruption of embryonic osmoregulation and pericardial edema formation. However, its currently unclear whether (1) TPHP-induced effects on osmoregulation are driven by direct TPHP-induced injury to the embryonic epidermis and (2) whether TPHP-induced pericardial edema is reversible or irreversible following cessation of exposure. Therefore, the objectives of this study were to determine whether TPHP-induced pericardial edema is reversible and whether TPHP causes injury to the embryonic epidermis by quantifying the number of DAPI-positive epidermal cells and analyzing the morphology of the yolk sac epithelium using scanning electron microscopy. First, we found that exposure to 5 μM TPHP from 24-72 h post-fertilization (hpf) did not increase prolactin - a hormone that regulates ions and water levels - in embryonic zebrafish, whereas high ionic strength exposure media was associated with elevated levels of prolactin. Second, we found that exposure to 5 μM TPHP from 24-72 hpf did not decrease DAPI-positive epidermal cells within the embryonic epithelium, and that co-exposure with 2.14 μM fenretinide - a synthetic retinoid that promotes epithelial wound repair - from 24-72 hpf did not mitigate the prevalence of TPHP-induced epidermal folds within the yolk sac epithelium when embryos were exposed within high ionic strength exposure media. Finally, we found that the pericardial area and body length of embryos exposed to 5 μM TPHP from 24-72 hpf were similar to vehicle-treated embryos at 120 hpf following transfer to clean water and depuration of TPHP from 72-120 hpf. Overall, our findings suggest that (1) the ionic strength of exposure media may influence the baseline physiology of zebrafish embryos; (2) TPHP does not cause direct injury to the embryonic epidermis; and (3) TPHP-induced effects on pericardial area and body length are reversible 48 h after transferring embryos to clean water.

In modern felinology, cat owners are increasingly interested in behavior of their pets. Based on the study of testosterone levels, methods for determining the gender temperament of cats were proposed. Estradiol and prolactin levels in combination with testosterone concentrations remain less studied in cats of the Russian selection. The aim of the research was to study the relationship between the level of aggressive behavior and blood concentrations of testosterone, estradiol and prolactin inFelis catus. The experiments were carried out in Omsk, Lugansk, Moscow and the Moscow region in 20152023. The study used 162 mature cats aged 2 to 11 years, which belonged to 9 different Russian breeds. Concentration of hormones in blood serum was determined by the enzyme immunoassay (ELISA) using kits from HEMA (Russia), Sigma (USA), Vector-Best (Russia) on semi-automatic Multiskan FC analyzer (Termo Fisher Scientific; USA). The highest concentration of testosterone was in young cats, which was 16.8 and 35.8 % more (р 0.01) compared to full-aged and old cats, respectively. The highest concentration of estradiol in blood serum of Russian cats was in old animals, which was 4.3 and 33.3% more (р 0.01) compared to full-aged and young males, respectively. The highest concentration of prolactin in blood was in old animals, which was 9.6 and 48.8% more (р 0.001) than in full-aged and young males, respectively. The largest amount of estradiol was detected in female cats with the calmest type of behavior without any aggressive signsin melancholics, which was 66.7% more (р 0.001) than in phlegmatics; 54.8% more (р 0.001) than in animals with average level of aggressive behavior towards animals of the same speciessanguines, and 2.5 times more (р 0.001) in comparison with animals that showed the maximum level of aggressive behavior towards animals and humanscholerics. Therefore, it can be concluded that increase in estradiol level contributes to a calmer behavior ofFelis catusmales in homes.

The present study aimed to identify the DNA polymorphisms within prolactin gene regions of Gaolao cattle and to investigate their relation with milk production traits. The genomic DNA was isolated from 245 unrelated animals of Gaolao cows, and test-day milk traits data were recorded. PCRRFLP, PCR-SSCP and direct sequencing methods for mutation confirmation were used to study polymorphism within the prolactin gene. The PCR-RFLP genotyping at the exon-3 region of the prolactin gene revealed polymorphism and found an association of the PRLG1-RsaI ‘AA’ genotype with milk yield (5.05±0.14*) in Gaolao cattle. The exon-4, intron-3,4, Exon-5, 5'flanking, and exon-1 regions of prolactin revealed SSCP polymorphisms and SNPs. The results of the study indicate the existence of a substantial amount of genetic variation within the above-studied regions of the prolactin candidate gene. The identified association at PRLG1-RsaI genotype with milk yield will aid in future geneassisted selection and improvement strategies in Gaolao indigenous cattle.

Hyperprolactinemia has multiple etiologies and is the most common endocrine manifestation of pathology of the hypo­thalamic-pituitary axis. Hyperprolactinemic hypogonadism is of great scientific interest due to the prevalence of endocrine pathology in the reproductive period and its effect on metabolic processes. Hyperprolactinemia is one of the serious obstacles to the implementation of reproductive function in both women and men. The article discusses current issues of diagnosis and management tactics for patients with hyperprolactinemia of various etiologies within the framework of preconception preparation.

Abstract Background In the context of rheumatoid arthritis and its systemic inflammatory implications, there is an increasing interest in investigating the role of prolactin in the clinical and metabolic aspects of the disease. This study aimed to explore the potential links between serum prolactin levels, serum glucose levels, and the clinical manifestations of arthritis. Methods This exploratory, cross-sectional, observational study focused on women diagnosed with rheumatoid arthritis. The research involved assessing prolactin and blood glucose concentrations, alongside specific clinical traits such as disease-related inflammation, morning stiffness, and fatigue intensity. The presence of changes in serum prolactin (PRL) was initially compared among the groups based on disease activity intensity. Using a multinomial regression analysis, the study analyzed the impact of predetermined clinical and metabolic factors on various categories of prolactin concentration. Results Out of the 72 participants included in the study, hyperprolactinemia was detected in 9.1% of the sample. No differences in serum PRL were identified among the evaluated groups based on disease activity. Following multivariate analysis, no statistically significant differences were identified for the outcomes of inflammatory activity and morning stiffness within each PRL category when compared to the reference category for PRL. There was no increased likelihood of encountering blood glucose levels below 100 mg/dl among individuals with higher prolactin concentrations compared to those in the lowest prolactin category (OR 5.43, 95% CI 0.51–58.28). The presence of clinically significant fatigue revealed a higher likelihood of encountering this outcome among patients with intermediate PRL values (prolactin categories 7.76–10.35 with OR 5.18, 95% CI 1.01–26.38 and 10.36–15.29 with OR 6.25, 95% CI 1.2–32.51) when compared to the reference category. Conclusions The study found no discernible correlation between prolactin concentrations and worse scores for inflammatory activity of the disease, nor between prolactin concentrations and serum glucose levels. The findings regarding fatigue should be approached with caution given the exploratory nature of this study.

Background. Radiation is an environmental factor that can lead to changes in the level of hormones in the body and to variables in the function of the body. The study examined the impact of radiation on certain hormones and vital indicators for understanding its physiological effects on human health. Methodology. The study was carried out on two groups of non-smokers, non-alcoholics, and peaceful people with chronic diseases, and each group (40 blood samples) aged 20–6 years and 3–5 ml of blood were collected from each person. The decomposed samples were excluded to avoid erroneous results: the two groups were a non-irradiated group and an irradiated group. The level of prolactin hormone, cortisol hormone, colon cancer protein (CEA), and pancreatic cancer protein(CA19-9) was measured in both groups using MINDRY precision laboratory techniques and devices. Results. Prolactin prolactin results showed a pronounced significant decrease in the irradiated group with the non-irradiated group. Cortisol: The results of the cortisol study showed a clear increase in people exposed to radiation compared to people who were not exposed to radiation. The results of colon cancer protein (CEA) and pancreatic cancer protein (CA19-9) showed a significant and clear increase in people exposed to radiation compared to people not exposed to radiation. Conclusion. This study showed that radiation exposure negatively affects hormone levels and vital disease indicators in the human body. This study highlights the importance of systematic monitoring and complete preventive health care in individuals exposed to radiation to assess health risks.

Abstract Objective Transsphenoidal surgery for lactotroph pituitary neuroendocrine tumor (PitNET) lowers serum prolactin concentrations, occasionally below the normal range. However, the clinical significance of postoperative hypoprolactinemia is still unclear. In this study, we retrospectively reviewed the female patients with lactotroph PitNET who were treated with transsphenoidal surgery to elucidate the influence of postoperative hypoprolactinemia on regular menstruation restoration and endocrinological remission. Results The serum prolactin levels in all thirty three participating females had decreased following surgery. Serum prolactin levels in seven patients had decreased below the lower limit of normal ranges (hypoproactinemia group) and in the remaining twenty six patients, it was within the normal range (non-hypoproractinemia group). In hypoprolactinemia group, regular menstruation was restored in all patients with only lactotroph axis deficiency. Nine patients from the non-hypoprolactinemia group experienced re-elevation of serum prolactin concentration (27%). No patient in hypoprolactinemia group experienced the relapse of hyperprolactinemia. These data suggest that early postoperative hypoprolactinemia after transsphenoidal surgery for lactotroph PitNET is not only a good predictive factor for endocrinological remission but also no unfavorable effects on regular menstruation restoration.

Although growth hormone (GH) and prolactin (PRL) are usually recognized as pituitary hormones, their expression is not restricted to the adenohypophysis and can also be found in extra-pituitary tissues including placenta. Furthermore, GH, PRL, and their receptors structurally belong to the cytokine family of proteins, and indeed they have remarkable pleiotropic effects. In this review, we analyzed the biological roles of GH/PRL from an evolutionary perspective. We have recognized that the biological significance of GH/PRL can be summarized as follows: cytokines (metabokines) that regulate the shift of nutrients and even of whole bodies to live in the most appropriate environment(s) for conducting growth and reproduction. In this sense, the common keyword of the two metabokines is “shift” for environmental adaptation. Considering that these metabokines flexibly changed their biological roles, GH/PRL may have played important roles during vertebrate evolution.

Background and purpose: Previous reports on the symptoms and quality of life of patients with pituitary adenomas have paid little attention to physical activity. However, numerous studies have shown that physical activity can significantly influence prolactin secretion. Prolactin secretion levels, in turn, can affect various clinical outcomes, including tumor size, sleep quality, and fatigue levels in patients with pituitary adenomas. Given the intricate relationship between these factors, it is crucial to investigate how they interact to impact the overall health and quality of life of these patients. This study aims to bridge this gap by exploring the relationship between tumor size and fatigue levels, sleep quality, and physical activity in patients with pituitary adenomas. Understanding these relationships can provide insights into potential therapeutic strategies to improve patient outcomes. Materials and methods: A total of 116 patients diagnosed with pituitary adenomas from the Neurosurgery and Internal Medicine departments of Imam Khomeini Hospital in Sari were included in the study via census sampling. The inclusion criteria ensured that all participants had a confirmed diagnosis of pituitary adenoma. Demographic characteristics, tumor size (from patients' imaging records), prolactin levels (from patient records), physical activity levels (using the International Physical Activity Questionnaire), sleep quality (using the Pittsburgh Sleep Quality Index), and fatigue levels (using the Multidimensional Fatigue Inventory 20) were measured using checklists and validated questionnaires. Results: In the present study, 68 participants (58.6%) were female, and 48 (41.4%) were male. A total of 108 participants (93.1%) were aged 55 years or younger, and 8 participants (6.9%) were older than 55, with a mean age of 43.72±7.70 years. Of the participants, 71(61.2%) had prolactinomas, and 39(33.6%) had non-functional tumors. Tumor sizes ranged from 2.1 to 42.9 mm, with a mean size of 16.16±8.71 mm. The mean prolactin level was 561.52±413 ng/mL, with a minimum level of 8 ng/mL and a maximum of 1578 ng/mL. The results showed significant differences in the mean scores of sleep quality (5.81±1.91 vs. 6.73±2.14), fatigue (55.86±8.79 vs. 60.32±8.39), and physical activity (1203.95±258.65 vs. 1085.20±310.99) between patients with microadenomas and macroadenomas (P=0.048, P=0.008, P=0.038). Furthermore, correlation coefficients for age (r=0.415), fatigue (r=0.336), sleep quality (r=0.253), physical activity (r=-0.230), and prolactin (r=0.496) with tumor size were significant. The findings indicated that with increasing age, fatigue scores, sleep quality scores, and prolactin levels, tumor size also increases, while higher physical activity levels are associated with smaller tumor sizes. Additionally, as tumor size increases, prolactin levels, fatigue scores, and sleep quality scores increase, whereas physical activity scores decrease. Conclusion: The study concludes that with increasing age, fatigue and sleep quality scores worsen, but physical activity levels decrease. Moreover, as tumor size increases, prolactin levels, fatigue scores, and sleep quality scores increase, while physical activity scores decrease. An increase in prolactin levels is also associated with increased fatigue.

Groupers are economically important species in the fishery and aquaculture industries in Asian countries. Various species of grouper, including hybrids, have been brought to market even without precise species identification. In this study, we analyzed the structure and expression profile of the gene encoding prolactin (PRL) in the red-spotted grouper Epinephelus akaara based on genomic DNA and cDNA templates. The results showed that the PRL gene consists of five exons encoding an open reading frame of 212 amino acids, including a putative signal peptide of 24 amino acids and a mature structural protein of 188 amino acids. It showed amino acid identities of 99% with Epinephelus coioides, 83% with Amphiprion melanopus, 82% with Acanthopagrus schlegelii, 75% with Oreochromis niloticus, 70% with Coregonus autumnalis, and 67% with Oncorhynchus mykiss, indicating its closer similarity to E. coioides and other groupers but marked distinction from non-teleost PRLs. PRL mRNA expression was detected mostly in the brain, including the pituitary gland, with little expression in other tissues. While the 5-exon structure of the PRL gene of red-spotted grouper and the exon sizes were conserved, the sizes of the introns, particularly the first intron, were markedly different among the grouper species. To examine whether these differences can be used to distinguish groupers of similar phenotypes, exon-primed intron-crossing analysis was carried out for various commercially important grouper species. The results showed clear differences in size of the amplified fragment encompassing the first intron of the PRL gene, indicating that this method could be used to develop species-specific markers capable of discriminating between grouper species and their hybrids at the molecular level.

Background: Goals of anesthesia in neurosurgery include stable cerebral hemodynamics and provide relaxed brain to surgeon. Dexmedetomidine and lignocaine as an adjuvant can fulfill these criteria but literature comparing the two are sparse. We compared the effects of intravenous infusion of dexmedetomidine or lignocaine on stress response, postoperative pain, and recovery in patients undergoing craniotomy for intracranial tumors. Methods: Approval was obtained from IEC, and the study was prospectively registered (CTRI/2022/11/047434). Written and informed consent was obtained from 105 patients fulfilling inclusion criteria, and they were divided into three groups. Group D received intravenous infusion of dexmedetomidine 1 mcg/kg over 15 minutes followed by infusion at rate of 0.5 mcg/kg/h, Group L received intravenous infusion of lignocaine 2 mg/kg over 15 minutes followed by infusion at rate of 1.5 mg/kg/h, and Group N received intravenous infusion of normal saline at the rate of 4–8 ml/h till skin suturing. SPSS v23 (IBM Corp.) was used for data analysis. Results: There was a significant difference between groups in terms of intraoperative hemodynamic variations, brain relaxation score, extubation criteria, postoperative pain, stress indicator response, and quality of recovery. Conclusions: Dexmedetomidine as an adjuvant to anesthetic drugs has a better profile than lignocaine in suppressing stress response and preventing hemodynamic variations at intubation, skull pin application, and surgical incision. Dexmedetomidine increases the duration of effective analgesia more than lignocaine, in postoperative period in patients undergoing craniotomy.

Toxoplasmosis is an infection caused by the parasite Toxoplasma gondii. One-third of the world’s population has come into contact with this parasite. In Mexico, the prevalence is between 15% and 50% in the general population and 34.9% in women with high-risk pregnancies. In pregnancy, the highest incidence of infection occurs in the third trimester and fetal damage is inversely proportional to gestational age. Maternal hormones play a fundamental role in the immune response. There are very few studies, with controversial results, on the levels of increased hormones and their relationship to the kinetics of T. gondii infections during pregnancy. The aim was to determine the serum levels of 17-β estradiol, prolactin, and progesterone, and their association with anti-T. gondii antibodies’ kinetics in pregnancy. Fifty-two pregnant patients were studied. A questionnaire with sociodemographic and clinical aspects was used. Afterward, 10 mL of venous blood was collected by venipuncture every trimester. The concentrations of 17-β estradiol, progesterone, and prolactin were measured, using the ELISA method. In addition, anti-Toxoplasma IgG and IgM antibodies were also determined in the first, second, and third trimester. The prevalence of anti-Toxoplasma IgG antibodies was 26.92% in the first and second trimester and 32.7% in the third trimester. In seropositive women, 17-β estradiol increased in the second and third trimesters of pregnancy. Progesterone increased significantly p < 0.039 in the third trimester in these women, while prolactin increased in the second trimester with a statistical significance of p < 0.021. In addition, 17-β estradiol, progesterone, and prolactin are associated with T. gondii infection during pregnancy. New studies are necessary to clarify the specific mechanisms of immune response related to these hormones during pregnancy.