Growth Hormone & Igf Research最新文献

{"title":"Exercise combined with lysine-inositol vitamin B12 promotes height growth in children with idiopathic short stature","authors":"Fengping Sun ,&nbsp;Liqin Chao ,&nbsp;Junxia Zhang ,&nbsp;Xiaoli Pan","doi":"10.1016/j.ghir.2023.101535","DOIUrl":"10.1016/j.ghir.2023.101535","url":null,"abstract":"<div><h3>Objective</h3><p>This study was aimed to systematically determine the effect of exercise combined with lysine-inositol vitamin B12<span> (VB12) therapy on the height of children with idiopathic short stature (ISS).</span></p></div><div><h3>Methods</h3><p>Sixty children with ISS were randomly divided into observation and control groups (<em>N</em><span> = 30). Each group was given lysine-inositol VB12 oral solution (10 mL bid). Simultaneously, the observation group exercised following the “ISS exercise instruction sheet”. The height (H), growth velocity (GV), height standard deviation score (HtSDS) and other indicators were compared after 6 and 12 months of intervention, respectively. After 12 months of intervention, the biochemical indicators of the two groups, together with the correlation between the average days of exercise per week and average minutes of exercise per day, GV and serum growth hormone were analyzed.</span></p></div><div><h3>Results</h3><p><span><span>After 6 and 12 months of treatment, the GV, serum </span>GHRH, GHBP, GH, IGF-1, and IGFBP-3 levels in the observation group were significantly higher than those in the control group, and HtSDS was significantly lower than that in the control group (</span><em>P</em>&lt;0.01). After 12 months of treatment, the height of the observation group was significantly higher than that of the control group (<em>P</em>&lt;0.05). There was no significant difference in the biochemical indicators between two groups (<em>P</em>&gt;0.05). Average days of exercise per week and average minutes of exercise per day were positively correlated with GV and GHBP levels. Serum GHRH, GH, IGF-1, and IGFBP-3 levels were negatively correlated. Average minutes of exercise per day were negatively correlated with GV and GHBP levels. Serum GHRH, GH, IGF-1, and IGFBP-3 levels were positively correlated.</p></div><div><h3>Conclusion</h3><p>Regular and moderate stretching exercises combined with lysine-inositol VB12 can effectively promote height growth of children with ISS, which is clinically safe. The mechanism promotes serum GHRH, GHBP, GH, IGF-1, and IGFBP-3 levels.</p></div>","PeriodicalId":12803,"journal":{"name":"Growth Hormone & Igf Research","volume":"69 ","pages":"Article 101535"},"PeriodicalIF":1.4,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9667918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficacy and safety of growth hormone therapy in children with Noonan syndrome","authors":"Giorgio Sodero ,&nbsp;Clelia Cipolla ,&nbsp;Lucia Celeste Pane ,&nbsp;Linda Sessa ,&nbsp;Elena Malavolta ,&nbsp;Federica Arzilli ,&nbsp;Chiara Leoni ,&nbsp;Giuseppe Zampino ,&nbsp;Donato Rigante","doi":"10.1016/j.ghir.2023.101532","DOIUrl":"10.1016/j.ghir.2023.101532","url":null,"abstract":"<div><p>Patients with Noonan syndrome typically have a target height &lt;2 standard deviations compared to the general population, and half of the affected adults remain permanently below the 3rd centile for height, though their short stature might result from a multifactorial etiology, not-yet fully understood. The secretion of growth hormone (GH) following the classic GH stimulation tests is often normal, with baseline insulin-like growth factor-1 (IGF-1) levels at the lower normal limits, but patients with Noonan syndrome have also a possible moderate response to GH therapy, leading to a final increased height and substantial improvement in growth rate. Aim of this review was to evaluate both safety and efficacy of GH therapy in children and adolescents with Noonan syndrome, also evaluating as a secondary aim the possible correlations between the underlying genetic mutations and GH responses.</p></div>","PeriodicalId":12803,"journal":{"name":"Growth Hormone & Igf Research","volume":"69 ","pages":"Article 101532"},"PeriodicalIF":1.4,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9658146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Decreased insulin-like growth factor-1 expression in response to mechanical loading is associated with skeletal muscle anabolic resistance in cancer cachexia","authors":"Mitsunori Miyazaki ,&nbsp;Atsushi Sawada ,&nbsp;Daisuke Sawamura ,&nbsp;Susumu Yoshida","doi":"10.1016/j.ghir.2023.101536","DOIUrl":"10.1016/j.ghir.2023.101536","url":null,"abstract":"<div><h3>Objective</h3><p><span>Cachexia<span> is a systemic metabolic syndrome characterized by loss of body weight and </span></span>skeletal muscle<span> mass during chronic wasting diseases, such as cancer. Skeletal muscle in cancer cachexia is less responsive to anabolic factors including mechanical loading; however, the precise molecular mechanism is largely unknown. In this study, we examined the underlying mechanism of anabolic resistance in skeletal muscle in a cancer cachexia model.</span></p></div><div><h3>Methods</h3><p><span>CD2F1 mice (male, 8 weeks old) were subcutaneously transplanted (1 × 10</span>⁶<span> cells per mouse) with a mouse colon cancer-derived cell line (C26) as a model of cancer cachexia. Mechanical overload of the plantaris muscle<span> by synergist tenotomy was performed during the 2nd week and the plantaris muscle was sampled at the 4th week following C26 transplantation.</span></span></p></div><div><h3>Results</h3><p>The hypertrophic response of skeletal muscle (increased skeletal muscle weight/protein synthesis efficiency and activation of mechanistic target of rapamycin complex 1<span> signaling) associated with mechanical overload was significantly suppressed during cancer cachexia. Screening of gene expression profile and pathway analysis using microarray revealed that blunted muscle protein synthesis was associated with cancer cachexia and was likely induced by downregulation of insulin-like growth factor-1 (IGF-1) and impaired activation of IGF-1-dependent signaling.</span></p></div><div><h3>Conclusions</h3><p>These observations indicate that cancer cachexia induces resistance to muscle protein synthesis, which may be a factor for inhibiting the anabolic adaptation of skeletal muscle to physical exercise in cancer patients.</p></div>","PeriodicalId":12803,"journal":{"name":"Growth Hormone & Igf Research","volume":"69 ","pages":"Article 101536"},"PeriodicalIF":1.4,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9667913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Growth hormone-releasing hormone antagonists counteract hydrogen peroxide – induced paracellular hyperpermeability in endothelial cells","authors":"Nektarios Barabutis ,&nbsp;Agnieszka Siejka ,&nbsp;Mohammad S. Akhter","doi":"10.1016/j.ghir.2023.101534","DOIUrl":"10.1016/j.ghir.2023.101534","url":null,"abstract":"<div><p><span><span>Growth Hormone-Releasing Hormone (GHRH) is a hypothalamic peptide which regulates the release of Growth Hormone from the anterior </span>pituitary gland, and has been involved in inflammatory processes. On the other hand, GHRH antagonists (GHRHAnt) were developed to counteract those effects. Herein we demonstrate for the first time that GHRHAnt can suppress hydrogen peroxide (H</span>₂O₂<span><span>) - induced paracellular hyperpermeability in bovine pulmonary artery endothelial cells. Increased production of </span>reactive oxygen species<span> (ROS) and barrier dysfunction have been associated with the development of potentially lethal disorders, including sepsis and acute respiratory distress syndrome (ARDS). Our study supports the protective actions of GHRHAnt in the impaired endothelium, and suggests that those compounds represent an exciting therapeutic possibility towards lung inflammatory disease.</span></span></p></div>","PeriodicalId":12803,"journal":{"name":"Growth Hormone & Igf Research","volume":"69 ","pages":"Article 101534"},"PeriodicalIF":1.4,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10247445/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9721036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The coexistence of newly diagnosed acromegaly with primary empty sella: More frequent than expected?","authors":"Emre Urhan ,&nbsp;Aysa Hacioglu ,&nbsp;Izzet Okcesiz ,&nbsp;Zuleyha Karaca ,&nbsp;Canan Sehit Kara ,&nbsp;Kursad Unluhizarci","doi":"10.1016/j.ghir.2022.101521","DOIUrl":"10.1016/j.ghir.2022.101521","url":null,"abstract":"<div><h3>Objective</h3><p>We investigated the coexistence of newly diagnosed acromegaly with primary empty sella (ES), which is considered to be a rare association, and the impact of ES on the laboratory, radiological and prognostic status of acromegaly.</p></div><div><h3>Design</h3><p><span>Acromegaly patients diagnosed and followed-up between 2012 and 2021 were included. Empty sella was defined as the pituitary gland<span> and adenoma filling &lt;50% of the </span></span>sella turcica on preoperative T1 magnetic resonance imaging (MRI).</p></div><div><h3>Results</h3><p><span>102 acromegalic patients (45 male, 57 female, 45.5 ± 12.8 (range: 20–70 years) were included and data of a median 3 years (range: 0.5–9 years) were presented. ES was detected in 19 (18.6%) patients and 4 had complete and 15 had partial ES. Although not significant, adenoma size and residual adenoma on MRI on postoperative 3rd month, and disease remission<span><span> at last control were lower in acromegaly with ES than in acromegaly without ES, while the rate of female gender and remission on postoperative 3rd month were higher. While preoperative serum prolactin and nadir GH responses to </span>OGTT were significantly lower </span></span>in patients<span> with ES, there was no difference in terms of other pituitary hormones among both groups.</span></p></div><div><h3>Conclusion</h3><p>The present study revealed the coexistence of newly diagnosed acromegaly with primary ES at a rate of nearly 20% which is more frequent than expected and this association is not rare. The presence of ES was not associated with any preoperative/postoperative pituitary hormone levels and remission status, except lower preoperative prolactin and nadir GH responses to OGTT.</p></div>","PeriodicalId":12803,"journal":{"name":"Growth Hormone & Igf Research","volume":"68 ","pages":"Article 101521"},"PeriodicalIF":1.4,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10729793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of two prediction models in a clinical setting to predict growth in prepubertal children on recombinant growth hormone","authors":"Helena-Jamin Ly ,&nbsp;Anders Lindberg ,&nbsp;Hans Fors ,&nbsp;Jovanna Dahlgren","doi":"10.1016/j.ghir.2023.101523","DOIUrl":"10.1016/j.ghir.2023.101523","url":null,"abstract":"<div><h3>Objective</h3><p>Prediction models that calculate the growth response in children on recombinant growth hormone (GH) have shown to be helpful tools in deciding who should start treatment, as identifying GH deficiency can be a challenge. The aim of the study is to compare two prediction models; the KIGS (Pfizer International Growth Study) prediction models which are more accessible and the Gothenburg model which has previously been clinically validated.</p></div><div><h3>Design</h3><p>All prepubertal patients who commenced GH treatment at Queen Silvia Children's Hospital in Gothenburg during a 13-year-period were candidates for the study. Children were excluded if suspected syndrome, malignant disease, chronic disease, or poor adherence to treatment were found. The KIGS model and the Gothenburg model were used to make predictions. Data was obtained from medical charts for the period from birth to the end of the first year of treatment. The predicted height outcome was compared against observed.</p></div><div><h3>Results</h3><p>The study included 123 prepubertal children (76 males). The average age at treatment start and standard deviation (SD) was 5.7 (1.8) years. Correlation analyses were performed between predicted growth by both the Gothenburg and KIGS models versus the first year observed growth response showing strong correlations of <em>r</em> = 0.990 and <em>r</em> = 0.991 respectively with studentized residuals of 0.10 (0.81) for the Gothenburg model and 0.03 (0.96) for the KIGS model.</p></div><div><h3>Conclusion</h3><p>We found that both the Gothenburg model and the KIGS model are equivalent when applying to our clinical cohort. Both models are very precise, hence it is encouraged to use either based on accessibility for the clinic.</p></div>","PeriodicalId":12803,"journal":{"name":"Growth Hormone & Igf Research","volume":"68 ","pages":"Article 101523"},"PeriodicalIF":1.4,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9296718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biomarkers of growth and carbohydrate metabolism in neonatal rats supplemented with fish oil and/or antioxidants during intermittent hypoxia","authors":"Despoina Myrsini Galetaki ,&nbsp;Charles L. Cai ,&nbsp;Kulsajan S. Bhatia ,&nbsp;Vivian Chin ,&nbsp;Jacob V. Aranda ,&nbsp;Kay D. Beharry","doi":"10.1016/j.ghir.2022.101513","DOIUrl":"10.1016/j.ghir.2022.101513","url":null,"abstract":"<div><h3>Objective</h3><p>Extremely low gestational age neonates (ELGANs) experience frequent intermittent hypoxia<span><span><span> (IH) episodes during therapeutic oxygen. ELGANs exhibit poor postnatal growth<span> requiring lipid supplementation. Lipids are targets of </span></span>reactive oxygen species<span> resulting in lipid peroxidation and </span></span>cell death<span>, particularly in preterm infants with compromised antioxidant systems. We tested the hypothesis that early supplementation with lipids and/or antioxidants promotes growth and influences biomarkers of carbohydrate metabolism in neonatal rats exposed to IH.</span></span></p></div><div><h3>Design</h3><p><span>Newborn rats (</span><em>n</em><span> = 18/group) were exposed to brief hypoxia (12% O</span>₂<span>) during hyperoxia (50% O</span>₂<span><span>), or room air (RA), from birth<span> (P0) to P14 during which they received daily oral supplementation with: 1) fish oil; 2) Coenzyme Q10 (CoQ10) in olive oil; 3) </span></span>glutathione<span><span><span><span><span> nanoparticles (nGSH); 4) fish oil+CoQ10; or 5) olive oil. At </span>P21<span>, plasma samples were assessed for glucose, insulin, glucokinase<span> (GCK), glucagon, glucagon-like peptide (GLP)-1, growth hormone (GH), </span></span></span>corticosterone, and </span>ghrelin. Liver was assessed for </span>histopathology<span><span><span>, apoptosis (terminal deoxynucleotidyl transferase dUTP nick end labeling, TUNEL stain), and GH, insulin-like growth factor (IGF)-I, </span>GH binding protein (GHBP), and </span>IGF binding protein (IGFBP)-3.</span></span></span></p></div><div><h3>Results</h3><p><span><span>Neonatal IH resulted in decreased liver weight and liver/body weight ratios, as well as hepatocyte swelling, steatosis, and apoptosis, which were attenuated with fish oil, nGSH, and combined fish oil+CoQ10. IH also decreased </span>plasma glucose, insulin, GCK, and ghrelin, but increased GLP-1. All </span>treatments improved plasma glucose in IH, but insulin was higher with CoQ10 and nGSH only. Glucagon was increased with CoQ10, fish oil, and CoQ10 + fish oil, while corticosterone was higher with nGSH and CoQ10 + fish oil. IGF-I and IGFBP-3 were significantly higher in the liver with CoQ10 in IH, while deficits in GH were noted with CoQ10 and fish oil in RA and IH. Treatment with nGSH and combined CoQ10 + fish oil reduced IGF-I in RA and IH but increased IGFBP-3.</p></div><div><h3>Conclusions</h3><p>Neonatal IH impairs liver growth with significant hepatocyte damage. Of all supplements in IH, nGSH and combined fish oil+CoQ10 were most effective for preserving liver growth and carbohydrate metabolism. Data suggest that these supplements may improve poor postnatal organ and body growth; and metabolic dysfunction associated with neonatal IH.</p></div>","PeriodicalId":12803,"journal":{"name":"Growth Hormone & Igf Research","volume":"68 ","pages":"Article 101513"},"PeriodicalIF":1.4,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10730270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Growth hormone responses during arginine and clonidine stimulation test: Correlations with patients' auxological and metabolic parameters in a single centre study","authors":"Giorgio Sodero ,&nbsp;Francesco Mariani ,&nbsp;Michela Caprarelli ,&nbsp;Cristiana Agazzi ,&nbsp;Ludovica Quarta ,&nbsp;Luca Benacquista ,&nbsp;Donato Rigante ,&nbsp;Clelia Cipolla","doi":"10.1016/j.ghir.2022.101522","DOIUrl":"10.1016/j.ghir.2022.101522","url":null,"abstract":"<div><h3>Background</h3><p>Children with auxological parameters defining a ‘short stature’ is routinely subjected to various blood tests and, if necessary, to growth hormone stimulation test (GHST) for differentiating GH deficiency (GHD) and other causes of stunted growth.</p></div><div><h3>Aim</h3><p>This retrospective monocentric study aimed to evaluate any correlations between GH peaks during GHST in children assessed for short stature and their auxological/metabolic parameters, highlighting differences between GHD and idiopathic short stature.</p></div><div><h3>Patients and methods</h3><p><span><span>We reviewed the medical records of 74 children with short stature (height lower than the third percentile according to standardized growth curves for the Italian population) managed at the </span>Pediatric<span> Day Hospital of our Department of Life Sciences and Public Health<span> in Università Cattolica Sacro Cuore, Rome, who performed at least two GHSTs, using arginine and clonidine<span> as stimulants, for assessment of </span></span></span></span>GH secretion. The results of a total number of 161 GHSTs, performed in 42 children diagnosed with GHD and in 32 children with other causes of short stature, were analyzed.</p></div><div><h3>Results</h3><p>We found significantly lower serum levels of insulin growth factor-1 (IGF-1) and increased levels of <em>thyroid-stimulating hormone (</em><span><span>TSH) in children with GHD, without other metabolic differences in comparison to children with other causes of short stature. There was also a correlation between triglycerides and GH peak during arginine test, while fT4 and LDL concentrations correlated with GH peak during the third test, if performed. Pre-test </span>BMI (rho −0.274, </span><em>p</em> = 0.01) and weight (rho −0.251, <em>p</em> = 0.03) have influenced GH peak during clonidine stimulation test. Metabolic and auxological parameters could influence GH peak during clonidine and arginine stimulation tests and must be taken into account when interpreting GHST results.</p></div>","PeriodicalId":12803,"journal":{"name":"Growth Hormone & Igf Research","volume":"68 ","pages":"Article 101522"},"PeriodicalIF":1.4,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9555107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Insulin-like growth Factors I and II receptors in the breast cancer disparity” among African-American women [Growth Hormone & IGF Research 20 (2010) 245–254]","authors":"S. Kalla Singh,&nbsp;Q.W. Tan,&nbsp;C. Brito,&nbsp;M. De León,&nbsp;D. De León","doi":"10.1016/j.ghir.2022.101512","DOIUrl":"10.1016/j.ghir.2022.101512","url":null,"abstract":"","PeriodicalId":12803,"journal":{"name":"Growth Hormone & Igf Research","volume":"67 ","pages":"Article 101512"},"PeriodicalIF":1.4,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1096637422000697/pdfft?md5=1f32f18d0090266f856aa4f3c8a9a9ef&pid=1-s2.0-S1096637422000697-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40656079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Age, GH/IGF-1 levels, tumor volume, T2 hypointensity, and tumor subtype rather than proliferation and invasion are all reliable predictors of biochemical response to somatostatin analogue therapy in patients with acromegaly: A clinicopathological study","authors":"Elif Tutku Durmuş ,&nbsp;Ayşegül Atmaca ,&nbsp;Mehmet Kefeli ,&nbsp;Sultan Çalışkan ,&nbsp;Ozgur Mete ,&nbsp;Kerim Aslan ,&nbsp;Murat Fidan ,&nbsp;Ramis Çolak ,&nbsp;Buğra Durmuş","doi":"10.1016/j.ghir.2022.101502","DOIUrl":"10.1016/j.ghir.2022.101502","url":null,"abstract":"<div><h3>Purpose</h3><p><span>To determine whether biochemical responses to long-acting forms of first-generation somatostatin analogue (SSA) therapy </span>in patients<span> with acromegaly could be predicted from baseline and postoperative hormone concentrations, and tumor radiological and histopathological characteristics.</span></p></div><div><h3>Methods</h3><p><span>A total of 68 patients with acromegaly for whom postoperative SSA therapy was started were categorized according to their responses to treatment (SSA-responders vs. non-responders). The patients were compared based on their demographic characteristics, hormone levels, magnetic resonance imaging (MRI), and histopathological findings. Receiver-operating-characteristic (ROC) curves were constructed using the </span>predictive factors<span> that were significant in the univariate analysis to determinate the optimal cut-off values.</span></p></div><div><h3>Results</h3><p>The SSA-responders were significantly older (<em>p</em> = 0.041). Lower GH at diagnosis (<em>p</em> = 0.036), the postoperative 1st-week GH level (<em>p</em> = 0.027), baseline GH, insulin-like growth factor-1 (IGF-1) and IGF-1% upper limit of normal (ULN) (<em>p</em> = 0.001, <em>p</em> = 0.006, <em>p</em> = 0.023, respectively) were associated with biochemical response. T2-hypointensity and lower tumor volume were more common in the SSA-responders (<em>p</em> = 0.018, <em>p</em><span> = 0.03, respectively). Compared to sparsely granulated somatotroph tumors, densely granulated somatotroph tumors and other PitNETs causing GH excess including mammosomatotroph and mixed somatotroph and lactotroph tumors were more likely to respond to SSA therapy (</span><em>p</em> = 0.026, <em>p</em> = 0.03, respectively). The cut-off values generated by ROC curve analysis were GH at diagnosis of ≤8.8 ng/mL, GH at baseline of ≤2.69 ng/mL, IGF-1 at baseline ≤461.5 ng/mL, IGF-1% ULN at baseline ≤180.4%, and tumor volume of ≤1.11 cm³ (all <em>p</em> &lt; 0.05). There were no differences between the groups in terms of tumor invasiveness, proliferative activity (mitotic count per 2 mm² and Ki-67 labeling index) and quantitative analyses of T2-weighted MRI.</p></div><div><h3>Conclusion</h3><p>This study underscores that advanced age, low baseline GH and IGF-1 at diagnosis, low tumor volume, densely granulated tumor subtype, and T2 hypointensity may help predict biochemical response to SSA therapy in cases of acromegaly. These variables should be assessed with utmost attention for all patients prior to SSA treatment. In cases of possible resistance to SSA therapy, therapeutic activity should be monitored more closely and other therapies should be administered immediately in the event of poor response.</p></div>","PeriodicalId":12803,"journal":{"name":"Growth Hormone & Igf Research","volume":"67 ","pages":"Article 101502"},"PeriodicalIF":1.4,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10777034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}