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1.
Transl Psychiatry ; 14(1): 188, 2024 Apr 11.
Artigo em Inglês | MEDLINE | ID: mdl-38605013

RESUMO

Psychotherapy is an effective treatment for anxiety disorders (AD), yet a vast majority of patients do not respond to therapy, necessitating the identification of predictors to enhance outcomes. Several studies have explored the relationship between stress response and treatment outcome, as a potential treatment mechanism. However, the latter remains under-researched in patients with social anxiety disorder (SAD). We studied N = 29 patients undergoing psychodynamic psychotherapy (PDT) within the SOPHONET-Study. Stress reactivity (i.e., area under the curve with respect to the increase; AUCi) was induced by a standardized psychosocial stressor (Trier Social Stress Test; TSST) and assessed by means of adrenocorticotropic hormone (ACTH), blood and salivary cortisol samples before (t1) treatment. Samples of these biomarkers were taken -1 min prior stress exposure and six more blood samples were collected post-TSST ( + 1, + 10, + 20, + 30, + 45, + 60 min.). The participants were diagnosed with SAD based on the Structured Clinical Interview for DSM-IV (SCID) and completed the Liebowitz Social Anxiety Scale as well as the Beck Depression Inventory before (t1) and after psychotherapy (t2). Pre-treatment stress reactivity significantly predicted changes in depression (salivary p < 0.001 and blood cortisol p = 0.001), as well as in avoidance behavior (blood cortisol p = 0.001). None of the biomarkers revealed significant results in fear or in the total LSAS-scores, except for ACTH with a trend finding (p = 0.06). Regarding therapy success, symptoms of social anxiety (p = 0.005) and depression (p < 0.001) were significantly reduced from pre (t1) to post-treatment (t2). Our study showed that stress reactivity pre-treatment may serve as a predictor of psychotherapy outcome. In this regard, alterations in stress response relate to changes in symptoms of social anxiety and depression after PDT. This implies that patients with chronic stress might benefit from a targeted interventions during psychotherapy, especially to manage fear in social contexts.


Assuntos
Fobia Social , Psicoterapia Psicodinâmica , Humanos , Fobia Social/terapia , Psicoterapia Psicodinâmica/métodos , Hidrocortisona , Biomarcadores , Hormônio Adrenocorticotrópico , Estresse Psicológico/terapia , Estresse Psicológico/psicologia , Saliva , Ansiedade/terapia
2.
Acta Neurochir (Wien) ; 166(1): 167, 2024 Apr 03.
Artigo em Inglês | MEDLINE | ID: mdl-38565838

RESUMO

PURPOSE: The ovine corticotropin-releasing hormone (oCRH) stimulation test has been routinely used in the diagnostic work-up of ACTH-dependent Cushing syndrome (CS). With oCRH currently being out-of-stock in Europe, we aimed at evaluating the diagnostic performance of inferior petrosal sinus sampling (IPSS) without oCRH stimulation. METHODS: We compared the values of 40 patients with ACTH-dependent CS and negative MRI findings in whom ACTH was measured before and after oCRH stimulation. RESULTS: The ratio of central-to-peripheral ACTH measurement (IPS:P) before the combined 3, 5, and 10 min of oCRH stimulation yielded diminished sensitivity (85% vs. 97%), alongside markedly decreased specificity (57% vs. 71%), as well as reduced positive and negative predictive values (90% vs. 94% and 44% vs. 83%), respectively. CONCLUSIONS: With the current drug shortages in Europe, ACTH measurements without oCRH stimulation in IPSS cannot be recommended. Thus, we call for desmopressin or the commercially available human CRH as a potential alternative in the confirmation of ACTH excess by IPSS in equivocal MRI findings.


Assuntos
Síndrome de Cushing , Humanos , Ovinos , Animais , Síndrome de Cushing/diagnóstico , Hormônio Liberador da Corticotropina , Amostragem do Seio Petroso , Hormônio Adrenocorticotrópico , Valor Preditivo dos Testes
3.
Zhongguo Dang Dai Er Ke Za Zhi ; 26(3): 321-324, 2024 Mar 15.
Artigo em Chinês | MEDLINE | ID: mdl-38557387

RESUMO

The male patient, one day old, was admitted to the hospital due to hypoglycemia accompanied by apnea appearing six hours after birth. The patient had transient hypoglycemia early after birth, and acute heart failure suddenly occurred on the eighth day after birth. Laboratory tests showed significantly reduced levels of adrenocorticotropic hormone and cortisol, and pituitary magnetic resonance imaging was normal. Genetic testing results showed that the patient had probably pathogenic compound heterozygous mutations of the TBX19 gene (c.917-2A>G+c.608C>T), inherited respectively from the parents. The patient was conclusively diagnosed with congenital isolated adrenocorticotropic hormone deficiency caused by mutation of the TBX19 gene. Upon initiating hydrocortisone replacement therapy, cardiac function rapidly returned to normal. After being discharged, the patient continued with the hydrocortisone replacement therapy. By the 18-month follow-up, the patient was growing and developing well. In neonates, unexplained acute heart failure requires caution for possible endocrine hereditary metabolic diseases, and timely cortisol testing and genetic testing should be conducted.


Assuntos
Insuficiência Adrenal , Insuficiência Cardíaca , Hipoglicemia , Recém-Nascido , Humanos , Masculino , Hidrocortisona/uso terapêutico , Hipoglicemia/etiologia , Insuficiência Adrenal/congênito , Insuficiência Adrenal/diagnóstico , Insuficiência Adrenal/genética , Insuficiência Cardíaca/etiologia , Insuficiência Cardíaca/genética , Hormônio Adrenocorticotrópico
4.
Eur J Endocrinol ; 190(4): 284-295, 2024 Mar 30.
Artigo em Inglês | MEDLINE | ID: mdl-38584335

RESUMO

OBJECTIVE: Glucocorticoid resistance is a rare endocrine disease caused by variants of the NR3C1 gene encoding the glucocorticoid receptor (GR). We identified a novel heterozygous variant (GRR569Q) in a patient with uncommon reversible glucocorticoid resistance syndrome. METHODS: We performed ex vivo functional characterization of the variant in patient fibroblasts and in vitro through transient transfection in undifferentiated HEK 293T cells to assess transcriptional activity, affinity, and nuclear translocation. We studied the impact of the variant on the tertiary structure of the ligand-binding domain through 3D modeling. RESULTS: The patient presented initially with an adrenal adenoma with mild autonomous cortisol secretion and undetectable adrenocorticotropin hormone (ACTH) levels. Six months after surgery, biological investigations showed elevated cortisol and ACTH (urinary free cortisol 114 µg/24 h, ACTH 10.9 pmol/L) without clinical symptoms, evoking glucocorticoid resistance syndrome. Functional characterization of the GRR569Q showed decreased expression of target genes (in response to 100 nM cortisol: SGK1 control +97% vs patient +20%, P < .0001) and impaired nuclear translocation in patient fibroblasts compared to control. Similar observations were made in transiently transfected cells, but higher cortisol concentrations overcame glucocorticoid resistance. GRR569Q showed lower ligand affinity (Kd GRWT: 1.73 nM vs GRR569Q: 4.61 nM). Tertiary structure modeling suggested a loss of hydrogen bonds between H3 and the H1-H3 loop. CONCLUSION: This is the first description of a reversible glucocorticoid resistance syndrome with effective negative feedback on corticotroph cells regarding increased plasma cortisol concentrations due to the development of mild autonomous cortisol secretion.


Assuntos
Glucocorticoides , Erros Inatos do Metabolismo , Receptores de Glucocorticoides , Humanos , Hormônio Adrenocorticotrópico/genética , Glucocorticoides/farmacologia , Glucocorticoides/uso terapêutico , Glucocorticoides/metabolismo , Hidrocortisona , Ligantes , Mutação , Receptores de Glucocorticoides/genética , Receptores de Glucocorticoides/metabolismo , Receptores de Glucocorticoides/deficiência , Síndrome
5.
BMC Psychiatry ; 24(1): 269, 2024 Apr 10.
Artigo em Inglês | MEDLINE | ID: mdl-38600448

RESUMO

OBJECTIVE: The purpose of this study was to investigate the effects of escitalopram on the peripheral expression of hypothalamic-pituitary-adrenal (HPA) axis-related genes (FKBP51, HSP90, NR3C1 and POMC) and HPA-axis hormones in patients with panic disorder (PD). METHODS: Seventy-seven patients with PD were treated with escitalopram for 12 weeks. All participants were assessed for the severity of panic symptoms using the Panic Disorder Severity Scale (PDSS). The expression of HPA-axis genes was measured using real-time quantitative fluorescent PCR, and ACTH and cortisol levels were measured using chemiluminescence at baseline and after 12 weeks of treatment. RESULTS: At baseline, patients with PD had elevated levels of ACTH and cortisol, and FKBP51 expression in comparison to healthy controls (all p < 0.01). Correlation analysis revealed that FKBP51 expression levels were significantly positively related to cortisol levels and the severity of PD (all p < 0.01). Furthermore, baseline ACTH and cortisol levels, and FKBP51 expression levels were significantly reduced after 12 weeks of treatment, and the change in the PDSS score from baseline to post-treatment was significantly and positively related to the change in cortisol (p < 0.01). CONCLUSIONS: The results suggest that PD may be associated with elevated levels of ACTH and cortisol, and FKBP51 expression, and that all three biomarkers are substantially decreased in patients who have received escitalopram treatment.


Assuntos
Transtorno de Pânico , Humanos , Transtorno de Pânico/tratamento farmacológico , Transtorno de Pânico/genética , Transtorno de Pânico/diagnóstico , Hormônio Adrenocorticotrópico/metabolismo , Hormônio Adrenocorticotrópico/farmacologia , Hidrocortisona/metabolismo , Escitalopram , Sistema Hipotálamo-Hipofisário/metabolismo , Sistema Hipófise-Suprarrenal/metabolismo , Antidepressivos/farmacologia , Antidepressivos/uso terapêutico , RNA Mensageiro
7.
Can Vet J ; 65(4): 335-342, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38562984

RESUMO

Objective: To characterize concentrations of adrenocorticotropic hormone (ACTH), insulin, and thyroxine (T4) at 2 times of the year in healthy horses in Saskatchewan. Animals and procedure: A prospective, observational study was carried out in 52 healthy, client-owned horses. Inclusion criteria were no recent travel outside of Saskatchewan, normal physical examination findings, and no history or evidence of ongoing illness. Blood concentrations of ACTH, insulin and T4 were determined by chemiluminescence. Samples were collected in spring and fall and compared using the paired Student's t-test or Wilcoxon signed-rank test. Generalized estimating equations were used to assess the associations between ACTH, T4, and insulin concentrations and gender, age, season, body condition score, glucose concentration, and breed. Results: There were increases in both ACTH and insulin concentrations in the fall compared to spring (P < 0.001 and P = 0.001, respectively). Other than season, insulin concentration was associated with breed, whereas ACTH concentration was associated with age. Finally, T4 concentration was associated with breed and glucose concentration, but not with season. Conclusion and clinical relevance: These results highlighted the differences between spring and fall concentrations of both ACTH and insulin in healthy horses residing in the Canadian prairie provinces, which are known for extreme differences in summer and winter temperatures as well as day length. Geographically adjusted reference values are necessary to account for these variations, to improve diagnostic accuracy. This is the first published Canadian study evaluating these factors and their associations with hormone concentrations in clinically healthy animals.


Concentrations sanguines printanières et automnales d'hormone adrénocorticotrope, d'insuline et de thyroxine chez des chevaux en bonne santé en Saskatchewan. Objectif: Caractériser les concentrations d'hormone adrénocorticotrope (ACTH), d'insuline et de thyroxine (T4) à 2 moments de l'année chez des chevaux en bonne santé en Saskatchewan. Animaux et procédure: Une étude observationnelle prospective a été réalisée auprès de 52 chevaux en bonne santé appartenant à des clients. Les critères d'inclusion étaient l'absence de voyage récent à l'extérieur de la Saskatchewan, les résultats normaux de l'examen physique et l'absence d'antécédents ou de signes de maladie persistante. Les concentrations sanguines d'ACTH, d'insuline et de T4 ont été déterminées par chimiluminescence. Des échantillons ont été collectés au printemps et à l'automne et comparés à l'aide du test de Student apparié ou du test du rang de signe de Wilcoxon. Des équations d'estimation généralisées ont été utilisées pour évaluer les associations entre les concentrations d'ACTH, de T4 et d'insuline et le sexe, l'âge, la saison, l'état corporel, la concentration de glucose et la race. Résultats: Il y avait une augmentation des concentrations d'ACTH et d'insuline à l'automne par rapport au printemps (P < 0,001 et P = 0,001, respectivement). Hormis la saison, la concentration d'insuline était associée à la race, alors que la concentration d'ACTH était associée à l'âge. Enfin, la concentration de T4 était associée à la race et à la concentration en glucose, mais pas à la saison. Conclusion et pertinence clinique: Ces résultats ont mis en évidence les différences entre les concentrations printanières et automnales d'ACTH et d'insuline chez les chevaux en bonne santé résidant dans les provinces des Prairies canadiennes, reconnues pour leurs différences extrêmes de températures estivales et hivernales ainsi que de durée du jour. Des valeurs de référence géographiquement ajustées sont nécessaires pour tenir compte de ces variations et améliorer la précision du diagnostic. Il s'agit de la première étude canadienne publiée évaluant ces facteurs et leurs associations avec les concentrations d'hormones chez des animaux cliniquement sains.(Traduit par Dr Serge Messier).


Assuntos
Hormônio Adrenocorticotrópico , Insulina , Humanos , Cavalos , Animais , Tiroxina , Estações do Ano , Saskatchewan , Estudos Prospectivos , Glucose
8.
Medicine (Baltimore) ; 103(10): e37204, 2024 Mar 08.
Artigo em Inglês | MEDLINE | ID: mdl-38457550

RESUMO

INTRODUCTION: The use of immune checkpoint inhibitors (ICIs) is gradually increasing; ICIs produce a variety of immune-related adverse events (irAEs), especially ICI-induced hypoadrenocorticism, which can be a lethal complication if treatment is delayed. PATIENT CONCERNS: A 63-year-old man received chemotherapy with pembrolizumab for nonsmall cell lung cancer. He developed drug-induced interstitial pneumonia 366 days after receiving pembrolizumab and was treated with prednisolone. Five hundred thirty-seven days later, he developed drug-induced eosinophilic enteritis, and pembrolizumab was discontinued and prednisolone was continued. After discontinuation of prednisolone, general malaise and edema of the lower extremities appeared, and adrenal insufficiency was suspected. DIAGNOSIS: In blood tests on admission adrenocorticotropic hormone (ACTH) was 2.2 pg/mL and cortisol was 15 µg/dL, with no apparent cortisol deficiency. However, the cortisol circadian rhythm disappeared and remained low throughout the day; a corticotropin-releasing hormone stimulation test showed decreased reactive secretion of ACTH. Pituitary magnetic resonance imaging showed pituitary emptying, suggesting Empty Sella syndrome. INTERVENTIONS AND OUTCOMES: We started hydrocortisone and his symptoms were improved. CONCLUSIONS: The administration of high-dose steroids after ICI administration may mask the symptoms of hypoadrenocorticism as irAEs. Therefore, we should bear in mind the possibility of hypoadrenocorticism when we stop steroid therapy in patients who are treated with steroids after ICI administration.


Assuntos
Insuficiência Adrenal , Carcinoma Pulmonar de Células não Pequenas , Síndrome da Sela Vazia , Neoplasias Pulmonares , Masculino , Humanos , Pessoa de Meia-Idade , Prednisolona/uso terapêutico , Hidrocortisona , Inibidores de Checkpoint Imunológico/uso terapêutico , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Síndrome da Sela Vazia/induzido quimicamente , Neoplasias Pulmonares/tratamento farmacológico , Insuficiência Adrenal/induzido quimicamente , Insuficiência Adrenal/tratamento farmacológico , Hormônio Adrenocorticotrópico
9.
Biomolecules ; 14(3)2024 Feb 22.
Artigo em Inglês | MEDLINE | ID: mdl-38540684

RESUMO

Peptides continue to gain significance in the pharmaceutical arena. Since the unveiling of insulin in 1921, the Food and Drug Administration (FDA) has authorised around 100 peptides for various applications. Peptides, although initially derived from endogenous sources, have evolved beyond their natural origins, exhibiting favourable therapeutic effectiveness. Medicinal chemistry has played a pivotal role in synthesising valuable natural peptide analogues, providing synthetic alternatives with therapeutic potential. Furthermore, key chemical modifications have enhanced the stability of peptides and strengthened their interactions with therapeutic targets. For instance, selective modifications have extended their half-life and lessened the frequency of their administration while maintaining the desired therapeutic action. In this review, I analyse the FDA approval of natural peptides, as well as engineered peptides for diabetes treatment, growth-hormone-releasing hormone (GHRH), cholecystokinin (CCK), adrenocorticotropic hormone (ACTH), and α-melanocyte stimulating hormone (α-MSH) peptide analogues. Attention will be paid to the structure, mode of action, developmental journey, FDA authorisation, and the adverse effects of these peptides.


Assuntos
Hormônio Adrenocorticotrópico , alfa-MSH , Estados Unidos , alfa-MSH/farmacologia , Colecistocinina , Peptídeo 1 Semelhante ao Glucagon , United States Food and Drug Administration , Hormônios Estimuladores de Melanócitos , Fatores de Transcrição
10.
Hipertens Riesgo Vasc ; 41(2): 135-138, 2024.
Artigo em Espanhol | MEDLINE | ID: mdl-38508875

RESUMO

We present the case of a patient with a history of renal-vascular hypertension treated with stent one year previously, who attended the emergency room due to hypertensive emergency and dyspnea. Once the first suspicion of renal artery restenosis was ruled out with CT angiography, the study was completed, confirming the diagnosis of lung cancer through imaging and pathological anatomy. In the hormonal study, elevation of ACTH, hypercortisolism and analytical data of hyperaldosteronism were detected. With the final diagnosis of Cushing's syndrome secondary to ectopic production of ACTH, medical treatment was started, without being able to receive anything else due to the death of the patient after a few days.


Assuntos
Síndrome de Cushing , Hiperaldosteronismo , 60458 , Neoplasias Pulmonares , Humanos , Síndrome de Cushing/diagnóstico , Síndrome de Cushing/etiologia , Hormônio Adrenocorticotrópico , Neoplasias Pulmonares/complicações , Hiperaldosteronismo/complicações
11.
BMC Endocr Disord ; 24(1): 37, 2024 Mar 13.
Artigo em Inglês | MEDLINE | ID: mdl-38481234

RESUMO

BACKGROUND: The diagnosis of primary aldosteronism (PA) requires screening and confirmation testing. The present study examined whether the 1 µg ACTH stimulation test for plasma aldosterone concentration (PAC) can accurately diagnose PA by bypassing the regular confirmatory steps of PA diagnosis. METHODS: A cross-sectional study with a total of 36 patients with an aldosterone-renin ratio (ARR) > 20 ng/dL per ng/m/hr were included. The confirmation test for PA was performed by saline infusion and the patients were categorized into PA and non-PA. PAC was collected at 20 and 40 min after 1 µg ACTH stimulation test. Multivariable logistic regression analysis was performed, and the associations are presented as odds ratios (OR) and 95% confidence intervals (CI). Diagnostic accuracy is presented as AuROC. RESULTS: Multivariable analysis found only PAC at 20 min after ACTH stimulation showed significant association with a diagnosis of PA (OR 1.18, 95%CI (0.99, 1.31), p = 0.040). AuROC for this value was 0.95 and the proposed cut-off was 52 ng/dL with a sensitivity of 71.4% and a specificity of 96.6%. CONCLUSIONS: Diagnosing PA may be aided by PAC at 20 min following 1 µg ACTH stimulation. This value may be used with patients for whom the confirmation test for PA cannot be conducted.


Assuntos
Hiperaldosteronismo , Hipertensão , Humanos , Aldosterona , Hiperaldosteronismo/complicações , Estudos Transversais , Renina , Hormônio Adrenocorticotrópico , Hipertensão/complicações
12.
BMJ Case Rep ; 17(3)2024 Mar 06.
Artigo em Inglês | MEDLINE | ID: mdl-38453225

RESUMO

In this case report, we describe an uncommon presentation of Cushing's syndrome in a patient in their 60s who presented to the emergency department with left-sided chest pain. The initial workup for the patient was unremarkable except for an elevated blood pressure and elevated fasting plasma glucose. A CT scan of the chest, abdomen and pelvis was performed, demonstrating a splenic artery thrombus with multiple splenic infarcts, in addition to a combination of macronodular adrenal hyperplasia, bilateral gynecomastia, centripetal fat distribution and suspected mild bone demineralisation. Adrenocorticotropic hormone-independent macronodular adrenal hyperplasia, a rare aetiology responsible for Cushing's syndrome, was raised as a potential unifying diagnosis for the patient's hypercoagulable status, which was subsequently confirmed on an endocrinological investigation. The case report underscores the importance of communicating clinically relevant details to the imaging specialist in combination with considering a broad differential, including endocrine disorders, when evaluating an undifferentiated patient with atypical imaging findings.


Assuntos
Hiperplasia Suprarrenal Congênita , Síndrome de Cushing , Humanos , Masculino , Glândulas Suprarrenais/patologia , Hiperplasia Suprarrenal Congênita/complicações , Hormônio Adrenocorticotrópico , Síndrome de Cushing/diagnóstico por imagem , Síndrome de Cushing/etiologia , Hidrocortisona , Hiperplasia/patologia , Tomografia Computadorizada por Raios X , Pessoa de Meia-Idade , Idoso
14.
Probl Endokrinol (Mosk) ; 70(1): 18-29, 2024 Feb 27.
Artigo em Russo | MEDLINE | ID: mdl-38433538

RESUMO

AIM: To develop a noninvasive method of differential diagnosis of ACTH-dependent hypercortisolism, as well as to evaluate the effectiveness of an optimal algorithm for predicting the probability of ectopic ACTH syndrome (EAS) obtained using machine learning methods based on the analysis of clinical data. MATERIALS AND METHODS: As part of a single-center, one-stage, cohort study, a retrospective prediction of the probability of EAS among patients with ACTH-dependent hypercortisolism was carried out. Patients were randomly stratified into 2 samples: training (80%) and test (20%). Eleven machine learning algorithms were used to develop predictive models: Linear Discriminant Analysis, Logistic Regression, elastic network (GLMNET), Support Vector machine (SVM Radial), k-nearest neighbors (kNN), Naive Bayes, binary decision tree (CART), C5.0 decision tree algorithms, Bagged CART, Random Forest, Gradient Boosting (Stochastic Gradient Boosting, GBM). RESULTS: The study included 223 patients (163 women, 60 men) with ACTH-dependent hypercortisolism, of which 175 patients with Cushing's disease (CD), 48 - with EAS. As a result of preliminary data processing and selection of the most informative signs, the final variables for the classification and prediction of EAS were selected: ACTH level at 08:00 hours, potassium level (the minimum value of potassium in the active stage of the disease), 24-h urinary free cortisol, late-night serum cortisol, late-night salivary cortisol, the largest size of pituitary adenoma according to MRI of the brain. The best predictive ability in a training sample of all trained machine learning models for all three final metrics (ROC-AUC (0.867), sensitivity (90%), specificity (56.4%)) demonstrated a model of gradient boosting (Generalized Boosted Modeling, GBM). In the test sample, the AUC, sensitivity and specificity of the model in predicting EAS were 0.920; 77.8% and 97.1%, respectively. CONCLUSION: The prognostic model based on machine learning methods makes it possible to differentiate patients with EAS and CD based on basic clinical results and can be used as a primary screening of patients with ACTH-dependent hypercortisolism.


Assuntos
Síndrome de ACTH Ectópico , Síndrome de Cushing , Hipersecreção Hipofisária de ACTH , Masculino , Humanos , Feminino , Síndrome de Cushing/diagnóstico , Diagnóstico Diferencial , Teorema de Bayes , Estudos de Coortes , Hidrocortisona , Estudos Retrospectivos , Hipersecreção Hipofisária de ACTH/diagnóstico , Aprendizado de Máquina , Potássio , Hormônio Adrenocorticotrópico
15.
Eur J Pharmacol ; 969: 176434, 2024 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-38458412

RESUMO

BACKGROUND: Major depressive disorder (MDD) represents a challenge with high prevalence and limited effectiveness of existing treatments, particularly in cases of treatment-resistant depression (TRD). Innovative strategies and alternative drug targets are therefore necessary. Sildenafil, a selective phosphodiesterase type 5 (PDE5) inhibitor, is known to exert neuroplastic, anti-inflammatory, and antioxidant properties, and is a promising antidepressant drug candidate. AIM: To investigate whether sildenafil monotherapy or in combination with a known antidepressant, can elicit antidepressant-like effects in an adrenocorticotropic hormone (ACTH)-induced rodent model of TRD. METHODS: ACTH-naïve and ACTH-treated male Sprague-Dawley (SD) rats received various sub-acute drug treatments, followed by behavioural tests and biochemical analyses conversant with antidepressant actions. RESULTS: Sub-chronic ACTH treatment induced significant depressive-like behaviour in rats, evidenced by increased immobility during the forced swim test (FST). Sub-acute sildenafil (10 mg/kg) (SIL-10) (but not SIL-3), and combinations of imipramine (15 mg/kg) (IMI-15) and sildenafil (3 mg/kg) (SIL-3) or escitalopram (15 mg/kg) (ESC-15) and SIL-3, exhibited significant antidepressant-like effects. ACTH treatment significantly elevated hippocampal levels of brain-derived neurotrophic factor (BDNF), serotonin, norepinephrine, kynurenic acid (KYNUA), quinolinic acid (QUINA), and glutathione. The various mono- and combined treatments significantly reversed some of these changes, whereas IMI-15 + SIL-10 significantly increased glutathione disulfide levels. ESC-15 + SIL-3 significantly reduced plasma corticosterone levels. CONCLUSION: This study suggests that sildenafil shows promise as a treatment for TRD, either as a stand-alone therapy or in combination with a traditional antidepressant. The neurobiological mechanism underlying the antidepressant-like effects of the different sildenafil mono- and combination therapies reflects a multimodal action and cannot be explained in full by changes in the individually measured biomarker levels.


Assuntos
Transtorno Depressivo Maior , Imipramina , Masculino , Ratos , Animais , Escitalopram , Citrato de Sildenafila/farmacologia , Citrato de Sildenafila/uso terapêutico , Hormônio Adrenocorticotrópico , Depressão/induzido quimicamente , Depressão/tratamento farmacológico , Roedores , Transtorno Depressivo Maior/tratamento farmacológico , Ratos Sprague-Dawley , Antidepressivos/farmacologia , Antidepressivos/uso terapêutico , Comportamento Animal
18.
Arch Endocrinol Metab ; 68: e210514, 2024 Feb 29.
Artigo em Inglês | MEDLINE | ID: mdl-38427810

RESUMO

Objective: Enlargement of the adrenal glands and variable adrenocortical function have been reported in patients with pulmonary tuberculosis and, in a few studies, in patients with extrapulmonary tuberculosis (EPTB). However, none of the studies have evaluated the course of the adrenal morphology in these patients. Subjects and methods: Prospective study including 37 patients with EPTB and 37 healthy age- and sex-matched controls. The adrenal function was evaluated by measurement of cortisol levels at baseline and after stimulation with ACTH (Acton Prolongatum) before and 6 months after antituberculosis treatment. The size of both adrenal glands was evaluated using 64-slice computed tomography (CT) scanning before and 6 months after treatment. The findings were compared with those in a group of healthy matched controls. Results: Clinical and biochemical parameters were comparable between groups. The mean baseline serum cortisol level was significantly lower in the EPTB group (397.1 ± 184.9 nmol/L) compared with the control group (696.3 ± 101.8 nmol/L). Compared with controls, patients with EPTB had significantly lower mean cortisol levels at baseline and 1 hour after ACTH, both before (397 ± 184.9 nmol/L and 750.7 ± 176.8 nmol/L, respectively) and after (529.7 ± 100.4 nmol/L and 1017.2 ± 119.7 nmol/L, respectively) antituberculosis treatment. Both the length and thickness of the right and left adrenal glands were greater in patients with EPTB than in controls but became comparable to those in controls after treatment completion. Conclusion: Patients with EPTB have an enlarged adrenal size and low baseline and stimulated serum cortisol levels. After treatment completion, cortisol levels increased significantly, and the adrenal size normalized in these patients.


Assuntos
Hidrocortisona , Tuberculose Extrapulmonar , Humanos , Estudos Prospectivos , Antituberculosos/uso terapêutico , Hormônio Adrenocorticotrópico , Glândulas Suprarrenais/diagnóstico por imagem
20.
Front Endocrinol (Lausanne) ; 15: 1326496, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38532898

RESUMO

Background: Cushing's syndrome (CS) during pregnancy is a rare endocrine disorder characterized by hypercortisolism, which is significantly associated with maternal-fetal complications. Despite its rarity, CS during pregnancy may be related to a high risk of complications for both the mother and fetus.The aim of the present case study is to update the diagnostic approach to CS during pregnancy and the therapeutic strategies for this medical condition to minimize maternal-fetal complications. Methods: Here, we present two cases of CS in pregnant women, one of whom had twins. Typical clinical symptoms and signs of hypercortisolism developed at the beginning of pregnancy. The plasma cortisol diurnal rhythm of the pregnant patient was absent. CS was confirmed by cortisol and adrenocorticotropic hormone (ACTH) assessment, as well as imaging examination. We investigated the changes in the hypothalamic-pituitary-adrenal axis during normal pregnancy and the etiology, diagnosis and treatment of CS during pregnancy. Conclusion: Due to the associated risks of laparoscopic adrenalectomy,it is uncertain whether this treatment significantly decreases overall maternal mortality. Additional observational research and validation through randomized controlled trials (RCTs) are required. We advise that CS in pregnant women be diagnosed and treated by experienced teams in relevant departments and medical centers.


Assuntos
Síndrome de Cushing , Gravidez , Feminino , Humanos , Síndrome de Cushing/diagnóstico , Hidrocortisona , Adrenalectomia/efeitos adversos , Hormônio Adrenocorticotrópico , Feto
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