Pronóstico del paciente tratado de síndrome de Cushing

P. Discovery of novel inhibitor of 11 beta-hydroxysteroid dehydrogenase type 1 using in silico structure-based screening approach for the treatment of type 2 diabetes

Purpose

The current study is aimed to perform structure-based screening of FDA-approved drugs that can act as novel inhibitor of the 11beta- hydroxysteroid dehydrogenase type 1 (11β-HSD1) enzyme.

Methods

Structural analogs of carbenoxolone (CBX) were selected from DrugBank database and their Absorption, Distribution, Metabolism, Excretion, and Toxicity (ADMET) parameters were investigated by SwissADME. Molecular docking of CBX analogs against 11β-HSD1 was performed by AutoDock tool, their binding patterns were visualized using PyMOL and the interacting amino acids were determined by ProteinPlus tool. Molecular dynamics simulation was performed on the docked structure of 11β-HSD1 (Protein Data Bank (PDB) code: 2ILT) using GROMACS 2018.1.

Results

The binding energies of hydrocortisone succinate, medroxyprogesterone acetate, testolactone, hydrocortisone cypionate, deoxycorticosterone acetate, and hydrocortisone probutate were lower than that of substrate corticosterone. The molecular dynamics simulation of 11β-HSD1 and hydrocortisone cypionate docked structure showed that it formed a stable complex with the inhibitor. The Root mean square deviation (RMSD) of the protein (0.37 ± 0.05 nm) and ligand (0.41 ± 0.06 nm) shows the stability of the ligand-protein interaction.

Conclusion

The docking study revealed that hydrocortisone cypionate has a higher binding affinity than carbenoxolone and its other analogs. The molecular dynamics simulation indicated the stability of the docked complex of 11β-HSD1 and hydrocortisone cypionate. These findings indicate the potential use of this FDA approved drug in the treatment of type 2 diabetes. However, validation by in vitro inhibitory studies and clinical trials on type 2 diabetes patients is essential to confirm the current findings.

Cortisol excess in chronic kidney disease - A review of changes and impact on mortality

Chronic kidney disease (CKD) describes the long-term condition of impaired kidney function from any cause. CKD is common and associated with a wide array of complications including higher mortality, cardiovascular disease, hypertension, insulin resistance, dyslipidemia, sarcopenia, osteoporosis, aberrant immune function, cognitive impairment, mood disturbances and poor sleep quality. Glucocorticoids are endogenous pleiotropic steroid hormones and their excess produces a pattern of morbidity that possesses considerable overlap with CKD. Circulating levels of cortisol, the major active glucocorticoid in humans, are determined by a complex interplay between several processes. The hypothalamic-pituitary-adrenal axis (HPA) regulates cortisol synthesis and release, 11β-hydroxysteroid dehydrogenase enzymes mediate metabolic interconversion between active and inactive forms, and clearance from the circulation depends on irreversible metabolic inactivation in the liver followed by urinary excretion. Chronic stress, inflammatory states and other aspects of CKD can disturb these processes, enhancing cortisol secretion via the HPA axis and inducing tissue-resident amplification of glucocorticoid signals. Progressive renal impairment can further impact on cortisol metabolism and urinary clearance of cortisol metabolites. Consequently, significant interest exists to precisely understand the dysregulation of cortisol in CKD and its significance for adverse clinical outcomes. In this review, we summarize the latest literature on alterations in endogenous glucocorticoid regulation in adults with CKD and evaluate the available evidence on cortisol as a mechanistic driver of excess mortality and morbidity. The emerging picture is one of subclinical hypercortisolism with blunted diurnal decline of cortisol levels, impaired negative feedback regulation and reduced cortisol clearance. An association between cortisol and adjusted all-cause mortality has been reported in observational studies for patients with end-stage renal failure, but further research is required to assess links between cortisol and clinical outcomes in CKD. We propose recommendations for future research, including therapeutic strategies that aim to reduce complications of CKD by correcting or reversing dysregulation of cortisol.

Impact of Adrenalectomy on Cortisol-Producing Adenoma: Longitudinal Evaluation of Health-Related Quality of Life following Laparoscopic Adrenalectomy

INTRODUCTION

There is increasing interest in evaluating the quality of life of patients with cortisol-producing adrenocortical adenoma (CPA). Our objective was to assess patient-reported health-related quality of life (HRQOL) in patients with CPA compared to non-CPA.

METHODS

Between January 2012 and September 2015, a total of 24 and 62 patients who had laparoscopic adrenalectomy with CPA and non-CPA, respectively, were included in the study. General HRQOL was evaluated on Short Form 8 (SF-8) questionnaire. The SF-8 questionnaire was administered at preoperative baseline and at 3, 6, 9, 12, 18, and 24 months after adrenalectomy. The impact of changing 2 measures of the summary score on the physical component summary (PCS) and mental component summary (MCS) score of SF-8 was evaluated in prospective and longitudinal studies.

RESULTS

The baseline PCS score was significantly lower in the CPA than in the non-CPA group (43.6 vs. 49.0; p = 0.0075). Thereafter, the PCS score was significantly lower in the CPA group at 3, 6, 9, and 12 months postoperatively. The PCS score increased in the CPA group with no significant difference between both groups at 18 months (48.1 vs. 50.2; p = 0.1202) and 24 months (48.0 vs. 50.8; p = 0.3625) postoperatively. However, the baseline MCS score was not significantly different between the CPA and non-CPA group. The MCS score in both groups gradually increased with no significant differences between the groups at any time points after surgery. The PCS score was not significantly improved at all postoperative points than the baseline score in the CPA and non-CPA group. The MCS score was significantly improved than the baseline score from 6 months postoperatively only in the CPA group.

CONCLUSION

Our research suggests that laparoscopic adrenalectomy may contribute to improving the physical and mental function in HRQOL.

Posttraumatic stress symptoms (PTSS) in patients with Cushing's disease before and after surgery: A prospective study

The aim of this study was to investigate the occurrence, correlated factors and prognosis of posttraumatic stress symptoms (PTSS) in patients with Cushing's disease (CD). A total of 49 patients who were newly diagnosed with CD and underwent transsphenoidal surgery in our hospital from April 2015 to August 2017 were asked to participate in this study. Another group of 49 age and sex matched healthy control participants were also included for comparison. PTSS (measured with Impact of Event Scale-Revised, IES-R), depression/anxiety (measured with Hospital Anxiety and Depression scale, HADS) and quality of life (QoL; measured with 36-item short-form, SF-36) were evaluated at pre-surgery, 6 months post-surgery and 12 months post-surgery. The results showed that at preoperative stage, 15 (30.6%) CD patients developed PTSS, and they had higher 24 h UFC, and presented worse levels of depression, anxiety and QoL compared with patients without PTSS. Although most of them recovered postoperatively, there were still 5/15 (33.3%) patients persisted with PTSS for over a year. Additionally, one patient with recurred CD developed PTSS between 6 and 12 months postoperatively. Among the whole group of CD patients, the PTSS severity showed consistent improvement after surgery, which was in accordance with the progressing trends of depression, anxiety and psychological aspects of SF-36. However, compared with healthy individuals, CD patients in remission still performed worse in physical/mental health. In conclusion, patients with CD can develop PTSS, and they may persist for over a year even after successful surgery. Combined psychological intervention is advised for these patients.

Cushing disease: highlighting the importance of early diagnosis for both de novo and recurrent disease in light of evolving treatment patterns

OBJECTIVE

To highlight and summarize current literature on Cushing disease (CD)-related morbidity and mortality, focusing on residual complications after "cure" and the changing role of pharmacologic therapy in CD.

METHODS

Current journal articles on the consequences of untreated or undertreated CD, CD recurrence, and recent trends in CD treatment were collected from PubMed searches and analyzed in combination in view of the authors' clinical experience.

RESULTS

Timely recognition and treatment of de novo and recurrent CD remains a singular clinical challenge. Chronic excess cortisol exposure leads to potentially irreversible sequelae and death, stressing the importance of early diagnosis and treatment. Disease relapse after primary pituitary adenomectomy is prevalent and recurrence may manifest decades after initial surgery. Increased risk for mortality and hypercortisolism-related complications in postsurgical CD patients may indicate persistent subclinical disease and further underscores the need for cautious, ongoing observation and testing. Potential long-term pharmacologic treatment options (e.g., pasireotide, mifepristone) have recently emerged that may provide biochemical and symptomatic remission for those with refractory CD, or those for whom surgery is contraindicated.

CONCLUSION

Delays in CD diagnosis, management, and follow-up are common and lead to increased adverse metabolic complications and mortality. Rapid recognition and treatment as well as vigilant monitoring are therefore essential. After surgical treatment, some patients may suffer from persistent subclinical CD that remains difficult to detect with routine testing. Although long-term pharmacologic treatment has historically been limited by adverse reactions or escape from response, new treatments may offer more options for patients with refractory disease.

Health-related quality of life of patients with hypothalamic-pituitary-adrenal axis dysregulations: a cohort study

OBJECTIVE

Health-related quality of life (HrQoL) is increasingly considered to be an important outcome of care for hypothalamic-pituitary-adrenal (HPA) axis dysregulation. The objective of this study was to assess the influence of type of HPA axis dysregulation and cortisol status on HrQOL and its evolution with time and treatment.

DESIGN

Prospective cohort study.

METHODS

Between September 2007 and April 2014, HrQoL questionnaires were administered during routine management to all patients with HPA axis dysregulation hospitalized in a single department, and this was repeated after 6- 12-, 24- and 36-month during standard follow-up. The Medical Outcomes Study 36-item short-form health survey (SF-36) and the General Health Questionnaire 12 (GHQ-12) were used simultaneously, with a common time schedule to measure the impact of HPA axis dysregulation on HrQoL. Multivariate mixed linear regression models were constructed to adjust for potential confounders.

RESULTS

343 patients (206 with Cushing's syndrome of pituitary origin, 91 with Cushing's syndrome of adrenal origin and 46 with Addison's disease) responded to the questionnaires. Overall, HrQoL scores were well below population values. Cushing syndrome of pituitary origin was associated with worse HrQoL, especially in physical dimensions. More than half of the patients, of all diagnoses and cortisol status, had psychological distress requiring attention according to the GHQ-12. Hypercortisolism had the greatest negative influence on HrQoL.

CONCLUSIONS

HRQoL appears significantly altered by all forms of HPA axis dysregulation, and most substantially and broadly by Cushing's syndrome, notably during periods of hypercortisolism. These effects on HRQoL deserve further consideration both in clinical practice and research.

White matter alterations in the brains of patients with active, remitted, and cured cushing syndrome: a DTI study

BACKGROUND AND PURPOSE

Cushing syndrome appears after chronic exposure to elevated glucocorticoid levels. Cortisol excess may alter white matter microstructure. Our purpose was to study WM changes in patients with Cushing syndrome compared with controls by using DTI and the influence of hypercortisolism.

MATERIALS AND METHODS

Thirty-five patients with Cushing syndrome and 35 healthy controls, matched for age, education, and sex, were analyzed through DTI (tract-based spatial statistics) for fractional anisotropy, mean diffusivity, axial diffusivity, and radial diffusivity (general linear model, family-wise error, and threshold-free cluster enhancement corrections, P < .05). Furthermore, the influence of hypercortisolism on WM DTI changes was studied by comparing 4 subgroups: 8 patients with Cushing syndrome with active hypercortisolism, 7 with Cushing syndrome with medication-remitted cortisol, 20 surgically cured, and 35 controls. Cardiovascular risk factors were used as covariates. In addition, correlations were analyzed among DTI values, concomitant 24-hour urinary free cortisol levels, and disease duration.

RESULTS

There were widespread alterations (reduced fractional anisotropy, and increased mean diffusivity, axial diffusivity, and radial diffusivity values; P < .05) in patients with Cushing syndrome compared with controls, independent of the cardiovascular risk factors present. Both active and cured Cushing syndrome subgroups showed similar changes compared with controls. Patients with medically remitted Cushing syndrome also had reduced fractional anisotropy and increased mean diffusivity and radial diffusivity values, compared with controls. No correlations were found between DTI maps and 24-hour urinary free cortisol levels or with disease duration.

CONCLUSIONS

Diffuse WM alterations in patients with Cushing syndrome suggest underlying loss of WM integrity and demyelination. Once present, they seem to be independent of concomitant hypercortisolism, persisting after remission/cure.

Quality of life in Cushing's syndrome

INTRODUCTION

Cushing syndrome (CS) of any etiology (adrenal, pituitary or ectopic) impacts negatively on health-related quality of life (QoL), especially in active hypercortisolism but also after endocrine cure. Both generic questionnaires like the short-form 36 health survey -SF-36- and the derived SF-12, or the Hospital Anxiety and Depression Scale (HADS), and disease-specific measures like the CushingQoL and the Tuebingen CD-25 questionnaires have provided information on the impact of CS on patients perceived health.

MATERIALS AND METHODS

Studies published since January 2013 until November 2014 on QoL in patients with CS were identified, reviewed and summarized.

CONCLUSIONS

Treatment of CS improves patients perceived QoL, but it often takes many months and often never normalizes. In parallel to persistent QoL impairment in cured CS, brain and cerebellar volume are reduced. Depression, anxiety and cognitive dysfunction are common. Pediatric patients with CS also present worse QoL than normal children, as well as additional issues like delayed growth and pubertal development, next to abnormal body composition, psychological and cognitive maturation. Fluoxetine has been suggested as a neuroprotectant and antidepressant for patients with CS, although no prospective studies are yet available. The CushingQoL questionnaire has been mapped to well-validated instruments like SF-36 or EQ-5D, and therefore may be used in cost-utility and other health economy studies.