Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 189
Filter
1.
J Endocrinol Invest ; 2024 May 02.
Article in English | MEDLINE | ID: mdl-38696125

ABSTRACT

BACKGROUND: Papillary craniopharyngiomas harbor the BRAF V600E mutation, which paves the way for using BRAF inhibitor molecules to treat tumors refractory to standard therapies. Single case reports confirmed the efficacy of targeted therapy. However, most reports were limited by the short follow-up. We describe the long-term course of a patient treated with dual-agent BRAF and MEK inhibitors and review the available literature. CASE REPORT: A 75-year-old male patient had recurrence of a papillary craniopharyngioma after transsphenoidal surgery and Gamma Knife radiosurgery. Review of the pathologic specimen confirmed the presence of the BRAF V600E mutation. Because of the few therapeutic options, we decided to initiate BRAF/MEK inhibitor combined therapy for six months. Rapid reduction of the tumor occurred, but three months after quitting combined medical therapy the tumor recurred. BRAF/MEK inhibitor therapy was resumed and the tumor again showed a marked reduction. The second course was maintained for 20 months and the tumor showed another recurrence within three months, which, again, responded to a third course of targeted therapy. CONCLUSIONS: Our study confirms the excellent response of papillary craniopharyngioma to combined BRAF and MEK inhibitors. However, rapid tumor recurrence is the rule when medical therapy is stopped. Resistance to a second and third course of targeted therapy did not occur, suggesting that tumor mutations affecting the response to drugs seems an uncommon event in papillary craniopharyngioma. The exact role of targeted therapy in the treatment algorithm of papillary craniopharyngiomas has still to be refined.

2.
J Endocrinol Invest ; 2024 Jan 20.
Article in English | MEDLINE | ID: mdl-38244141

ABSTRACT

PURPOSE: Thyrotropin (TSH)-secreting pituitary adenoma (TSHoma) is a rare cause of TSH-dependent hyperthyroidism. The first therapeutic option is surgery. Medical treatment with somatostatin analogs is also effective. To obviate the need for lifelong drug therapy, gamma knife radiosurgery (GKRS) might be considered in selected patients. We report the largest series of patients with TSHoma treated by GKRS at a single center. METHODS: This study was a retrospective analysis of 18 consecutive patients with TSHoma treated by GKRS between 1994 and 2022. Normalization of hyperthyroidism, when present at the time of surgery, and control of tumor growth were the main outcomes of the study. RESULTS: The median follow-up after GKRS treatment was 114 months (IQR, 57-213 months; range 17-285 months). No patients had growth of the residual tumor after GKRS. Remission of hyperthyroidism occurred in 9 of the 11 (81.8%) patients who were hyperthyroid before GKRS. The probability of hyperthyroidism remission three years after GKRS was 59.1% (95% CI 27.9-90.3%). No major side effects occurred after GKRS. One patient out of the 15 patients (6.7%) with normal baseline adrenal function and follow-up longer than 3 years developed new onset hypoadrenalism, while hypogonadism did not occur in the 13 patients with baseline normal function. CONCLUSION: Our study shows that GKRS is an effective and safe adjuvant treatment for selected patients with residual or recurring TSHoma. The option of GKRS as an alternative treatment to lifelong medical treatment with somatostatin analogs should be thoroughly discussed with the patients.

3.
J Endocrinol Invest ; 46(4): 763-768, 2023 Apr.
Article in English | MEDLINE | ID: mdl-36269557

ABSTRACT

PURPOSE: Adrenal cortical adenomas (ACAs) represent one of the most common endocrine neoplasms. Recently, a genetic syndrome, characterized by tumor-suppressor ARMC5-gene mutations and causing primary macronodular bilateral adrenal hyperplasia with concomitant meningiomas of the central nervous system, has been described. Apart from this rare disorder and despite the well-known influence of steroid hormones on meningiomas, no data are available about the association between ACAs and meningiomas. METHODS: We investigated the prevalence of ACAs in a group of patients with cerebral meningioma undergoing unenhanced chest CT scans before attending surgical treatment. Patients with meningioma were age- and sex-matched in a 1:3 ratio with hospitalized patients for COVID-19. RESULTS: Fifty-six patients with meningioma were included and matched with 168 control patients with COVID-19. One-hundred forty-four (66.1%) were female and the median age was 63 years. Twenty ACAs were detected in the overall population (8.9% of the subjects): 10 in patients with meningioma (18%) and the remaining 10 (6%) in the control group (p = 0.007). Multivariate analysis showed that age and presence of meningioma were statistically associated with the presence of ACAs (p = 0.01, p = 0.008). CONCLUSION: We report, for the first time, a higher prevalence of ACAs in patients with meningioma as compared to age- and sex-matched controls. Larger studies are needed to confirm our data and to clarify the characteristics of the ACAs in patients with meningioma. Whether the detection of ACAs should prompt a neuroimaging evaluation to exclude the presence of meningiomas needs also to be considered.


Subject(s)
Adenoma , Adrenocortical Adenoma , COVID-19 , Meningeal Neoplasms , Meningioma , Humans , Female , Middle Aged , Male , Meningioma/diagnostic imaging , Meningioma/epidemiology , Meningioma/genetics , Prevalence , Armadillo Domain Proteins , Adenoma/diagnostic imaging , Adenoma/epidemiology , Meningeal Neoplasms/epidemiology , Meningeal Neoplasms/genetics
4.
Rev Clin Esp (Barc) ; 222(5): 293-298, 2022 05.
Article in English | MEDLINE | ID: mdl-35512908

ABSTRACT

This observational retrospective study aimed to investigate the usefulness of Sequential Organ Failure Assessment (SOFA), Quick SOFA (qSOFA), National Early Warning Score (NEWS), and quick NEWS in predicting respiratory failure and death among patients with COVID-19 hospitalized outside of intensive care units (ICU). We included 237 adults hospitalized with COVID-19 who were followed-up on for one month or until death. Respiratory failure was defined as a PaO2/FiO2 ratio ≤200mmHg or the need for mechanical ventilation. Respiratory failure occurred in 77 patients (32.5%), 29 patients (12%) were admitted to the ICU, and 49 patients (20.7%) died. Discrimination of respiratory failure was slightly higher in NEWS, followed by SOFA. Regarding mortality, SOFA was more accurate than the other scores. In conclusion, sepsis scores are useful for predicting respiratory failure and mortality in COVID-19 patients. A NEWS score ≥4 was found to be the best cutoff point for predicting respiratory failure.


Subject(s)
COVID-19 , Respiratory Insufficiency , Sepsis , Adult , COVID-19/complications , Hospital Mortality , Humans , Intensive Care Units , Organ Dysfunction Scores , Prognosis , ROC Curve , Retrospective Studies
5.
Rev. clín. esp. (Ed. impr.) ; 222(5): 293-298, Mayo 2022. tab
Article in Spanish | IBECS | ID: ibc-204740

ABSTRACT

El presente estudio retrospectivo observacional tiene como objetivo analizar la utilidad de las escalas SOFA (Sequential Organ Failure Assessment), qSOFA (Quick SOFA), NEWS (National Early Warning Score ) y Quick NEWS para predecir el fallo respiratorio y la muerte en pacientes con COVID-19 atendidos fuera de la Unidad de Cuidados Intensivos (UCI). Se incluyeron 237 adultos con COVID-19 hospitalizados seguidos durante un mes o hasta su fallecimiento. El fallo respiratorio se definió como un cociente PaO2/FiO2 ≤ 200 mmHg o la necesidad de ventilación mecánica. Setenta y siete pacientes (32,5%) desarrollaron fallo ventilatorio; 29 (12%) precisaron ingreso en UCI, y 49 fallecieron (20,7%). La discriminación del fallo ventilatorio fue algo mayor con la puntuación NEWS, seguida de la SOFA. En cuanto a la mortalidad, la puntuación SOFA fue más exacta que las otras escalas. En conclusión, las escalas de sepsis son útiles para predecir el fallo respiratorio y la muerte en COVID-19. Una puntuación ≥ 4 en la escala NEWS sería el mejor punto de corte para predecir fallo respiratorio (AU)


This observational retrospective study aimed to investigate the usefulness of Sequential Organ Failure Assessment (SOFA), Quick SOFA (qSOFA), National Early Warning Score (NEWS), and quick NEWS in predicting respiratory failure and death among patients with COVID-19 hospitalized outside of intensive care units (ICU). We included 237 adults hospitalized with COVID-19 who were followed-up on for one month or until death. Respiratory failure was defined as a PaO2/FiO2 ratio ≤ 200 mmHg or the need for mechanical ventilation. Respiratory failure occurred in 77 patients (32.5%), 29 patients (12%) were admitted to the ICU, and 49 patients (20.7%) died. Discrimination of respiratory failure was slightly higher in NEWS, followed by SOFA. Regarding mortality, SOFA was more accurate than the other scores. In conclusion, sepsis scores are useful for predicting respiratory failure and mortality in COVID-19 patients. A NEWS score ≥ 4 was found to be the best cutoff point for predicting respiratory failure (AU)


Subject(s)
Humans , Sepsis/diagnosis , Coronavirus Infections/mortality , Pneumonia, Viral/mortality , Respiratory Insufficiency , Retrospective Studies , Predictive Value of Tests , Severity of Illness Index , ROC Curve
6.
Rev Clin Esp ; 222(5): 293-298, 2022 May.
Article in Spanish | MEDLINE | ID: mdl-33191944

ABSTRACT

This observational retrospective study aimed to investigate the usefulness of Sequential Organ Failure Assessment (SOFA), Quick SOFA (qSOFA), National Early Warning Score (NEWS), and quick NEWS in predicting respiratory failure and death among patients with COVID-19 hospitalized outside of intensive care units (ICU). We included 237 adults hospitalized with COVID-19 who were followed-up on for one month or until death. Respiratory failure was defined as a PaO2/FiO2 ratio ≤ 200 mmHg or the need for mechanical ventilation. Respiratory failure occurred in 77 patients (32.5%), 29 patients (12%) were admitted to the ICU, and 49 patients (20.7%) died. Discrimination of respiratory failure was slightly higher in NEWS, followed by SOFA. Regarding mortality, SOFA was more accurate than the other scores. In conclusion, sepsis scores are useful for predicting respiratory failure and mortality in COVID-19 patients. A NEWS score ≥ 4 was found to be the best cutoff point for predicting respiratory failure.

7.
J Endocrinol Invest ; 44(10): 2243-2251, 2021 Oct.
Article in English | MEDLINE | ID: mdl-33611756

ABSTRACT

PURPOSE: Nelson's syndrome (NS) is a long-term complication of bilateral adrenalectomy in patients with Cushing's disease. The best therapeutic strategy in NS has not been well defined. Gamma knife radiosurgery (GKRS) is very effective to stop the growth of the pituitary adenoma, which is the main goal of the treatment of patients with NS. We report the largest series of patients with NS treated by GKRS at a single center. METHODS: The study was an observational, retrospective analysis of 28 consecutive patients with NS treated by GKRS in our department between 1995 and 2019. All patients had a growing ACTH-secreting pituitary adenoma. The main outcome of the study was to assess by the Kaplan-Meier method the risk of tumor progression after GKRS. RESULTS: The median follow-up after GKRS treatment was 98 months (IQR 61-155 months, range 7-250 months). Two patients (7.1%) had a recurrence of disease during follow-up. The 10-year progression-free survival was 91.7% (95% CI 80.5-100%). No patient had deterioration of visual function or oculomotor function after GKRS. New onset of hypogonadism and hypothyroidism occurred in 18.8% and 14.3% of the patients at risk. CONCLUSION: Our study confirms that GKRS may stop the tumor growth in the majority of patients with NS, even though very aggressive adenomas may ultimately escape this treatment. Safety of GKRS was good in our experience, but due attention must be paid to planning the distribution of radiation to critical structures, especially in patients previously treated by radiation.


Subject(s)
Adenoma/surgery , Nelson Syndrome/surgery , Pituitary Neoplasms/surgery , Radiosurgery/methods , Adenoma/pathology , Adolescent , Adult , Aged , Child , Female , Follow-Up Studies , Humans , Male , Middle Aged , Nelson Syndrome/pathology , Pituitary Neoplasms/pathology , Retrospective Studies , Treatment Outcome , Young Adult
8.
Eur Ann Otorhinolaryngol Head Neck Dis ; 137(5): 371-375, 2020 Nov.
Article in English | MEDLINE | ID: mdl-32291205

ABSTRACT

OBJECTIVE: To assess the feasibility in routine practice of postoperative chemoradiotherapy in head and neck squamous cell carcinoma (HNSCC) at high risk of recurrence. METHOD: A single-center retrospective study recruited all patients receiving postoperative cisplatin chemoradiotherapy for HNSCC at high risk of recurrence. The main endpoints were the rate of complete postoperative chemoradiotherapy and the impact of various clinical factors. Secondary endpoints comprised the impact of completion of therapy on survival and on acute and late toxicity. RESULTS: One hundred and six patients were included. 24.5% showed severe comorbidity. Chemoradiotherapy was complete in 61 patients (57.5%). Radiation therapy was interrupted for >3 days in 16 patients (15.1%). The 3rd concomitant cisplatin course could not be implemented in 34 patients (32.1%). Low pre-treatment glomerular filtration rate was significantly associated (p=0.003) with treatment interruption; >5% weight-loss during treatment showed suggestive association (p=0.026). Completion of treatment was not associated with any significant difference in overall survival (p=0.441) or progression-free survival (p=0.81). 14.9% of patients showed post-treatment kidney failure; there were 10 cases of osteoradionecrosis (9.4%). CONCLUSION: The rate of complete postoperative chemoradiotherapy was comparable to that reported in clinical trials, despite frequent comorbidity and poor nutritional status. Early nutritional support is a key factor for treatment under optimal conditions.


Subject(s)
Antineoplastic Agents , Carcinoma, Squamous Cell , Head and Neck Neoplasms , Antineoplastic Agents/therapeutic use , Carcinoma, Squamous Cell/drug therapy , Chemoradiotherapy , Feasibility Studies , Head and Neck Neoplasms/drug therapy , Humans , Neoplasm Recurrence, Local/therapy , Retrospective Studies , Squamous Cell Carcinoma of Head and Neck/therapy
9.
J Endocrinol Invest ; 43(5): 575-585, 2020 May.
Article in English | MEDLINE | ID: mdl-31797309

ABSTRACT

BACKGROUND: Sellar melanocytomas represent a small subgroup of primary melanocytic tumors. They arise from melanocytes located in the meningeal lining of the sellar floor or in the diaphragma sellae and this location is very uncommon. Usually, sellar melanocytomas are benign and slow-growing tumors with a high likelihood of recurrence. PURPOSE: To our knowledge, due to the rarity of this condition, there are no guidelines regarding their diagnosis and treatment in the medical literature to date. We have developed a narrative review, analyzing the available studies regarding primary sellar melanocytomas reported in the medical literature. We have found ten papers on this topic and all of them are case reports. In all patients, tumor diagnosis was performed after the occurrence of neurological symptoms, in particular progressive visual loss or endocrinological disorders. The diagnosis is difficult, and it requires several preoperative and postoperative investigations, but histological examination is crucial. CONCLUSIONS: Transsphenoidal surgery is the first-choice treatment. In case of tumor's recurrence or regrowth, the role of radiation therapy and chemotherapy is not entirely clear.


Subject(s)
Melanocytes/pathology , Pituitary Gland/pathology , Pituitary Neoplasms/pathology , Humans , Pituitary Gland/surgery , Pituitary Neoplasms/surgery
11.
J Endocrinol Invest ; 41(11): 1259-1266, 2018 Nov.
Article in English | MEDLINE | ID: mdl-29536433

ABSTRACT

PURPOSE: To examine differences in effects according to growth hormone (GH) treatment duration in adult GH-deficient patients. METHODS: In the Italian cohort of the observational Hypopituitary Control and Complications Study, GH-treated adults with GH deficiency (GHD) were grouped by duration of treatment; ≤ 2 years (n = 451), > 2 to ≤ 6 years (n = 387) and > 6 years (n = 395). Between-group differences in demographics, medical history, physical characteristics, insulin-like growth factor-I standard deviation score (IGF-I SDS) and lipid profile at baseline, last study visit and changes from baseline to last study visit were assessed overall, for adult- and childhood-onset GHD and by gender using ANOVA for continuous variables and Chi-squared test for categorical variables. RESULTS: At baseline, treatment duration groups did not differ significantly for age, gender, body mass index, GHD onset, IGF-I SDS, lipid profile, and quality of life. Mean initial GH dose did not differ significantly according to treatment duration group in any subgroup, except female patients, with highest mean dose seen in the longest duration group. In the longest duration group for patients overall, adult-onset patients and male patients, there were significant decreases in GH dose from baseline to last visit, and in total and low-density lipoprotein (LDL)-cholesterol concentrations. IGF-I SDS increased, to a greater extent, in the longest duration group for patients overall and female patients. CONCLUSIONS: The results show that long-term GH treatment is associated with decreasing GH dose, increased IGF-I, decreased LDL-cholesterol and the presence of surrogate markers that help to give confidence in a diagnosis of GHD.


Subject(s)
Hormone Replacement Therapy/methods , Human Growth Hormone/therapeutic use , Hypopituitarism/drug therapy , Insulin-Like Growth Factor I/metabolism , Adult , Age Factors , Body Mass Index , Cohort Studies , Dose-Response Relationship, Drug , Female , Human Growth Hormone/blood , Human Growth Hormone/deficiency , Humans , Hypopituitarism/blood , Italy , Longitudinal Studies , Male , Middle Aged , Sex Factors , Treatment Outcome
12.
J Neurol Sci ; 375: 324-330, 2017 Apr 15.
Article in English | MEDLINE | ID: mdl-28320161

ABSTRACT

Arterial hypertension (HT) and other vascular pre-existing conditions (PEC) generate asymptomatic brain damage which increases the occurrence of stroke and cognitive decline. The aim of this work was to explore if serum antibodies against the NR2 subunit of the NMDA receptor (NR2Ab) could predict subclinical brain damage (SBD) in hypertensive patients with PEC. Forty seven neurologically asymptomatic hypertensive subjects were classified according to the number of PEC (retinopathy, overweight/obesity, diabetes mellitus and dyslipidemia). NR2A/B Ab were measured in serum employing an ELISA method. 3.0-T Brain MRI imaging was performed, and visual ratings of white matter hyperintensities (WMH) and counts of dilated Virchow-Robin spaces (DVRS) and lacunes were obtained. Brain atrophy was evaluated with cortical thickness measurements and linear measures. Higher levels of NR2Ab were associated with more severe periventricular WMH (PWMH), more DVRS and more severe SBD; while greater frontal interhemispheric fissure width (IHFW), as a linear measure of frontal atrophy, was inversely related with NR2Ab. Overall and regional cortical thickness were not significantly associated with NR2 Ab. A multivariate analyses showed that IHFW and PWMH were the only variables independently associated with serum NR2Ab concentration. ROC analysis revealed that NR2Ab (cutoff: 1.7ng/ml) predicted PWMH with a sensitivity and specificity of 65% and 87% respectively. CONCLUSIONS: Serum NR2Ab levels may reflect SBD in HT subjects with PEC, especially in younger populations at risk, where age-related cortical atrophy has not yet been fully established.


Subject(s)
Autoantibodies/blood , Brain Injuries/blood , Brain Injuries/etiology , Hypertension/complications , Preexisting Condition Coverage/statistics & numerical data , Receptors, N-Methyl-D-Aspartate/immunology , Adult , Aged , Atrophy/etiology , Atrophy/pathology , Blood Pressure/physiology , Brain Injuries/diagnostic imaging , Female , Humans , Image Processing, Computer-Assisted , Linear Models , Magnetic Resonance Imaging , Male , Middle Aged , ROC Curve , Statistics, Nonparametric
13.
Eur J Endocrinol ; 176(5): 543-553, 2017 May.
Article in English | MEDLINE | ID: mdl-28179449

ABSTRACT

OBJECTIVE: Glucose-dependent insulinotropic polypeptide receptor (GIPR) overexpression has been recently described in a proportion of gsp- somatotropinomas and suggested to be associated with the paradoxical increase of GH (GH-PI) during an oral glucose load. DESIGN AND METHODS: This study was aimed at linking the GIP/GIPR pathway to GH secretion in 25 somatotropinomas-derived primary cultures and correlating molecular with clinical features in acromegalic patients. Given the impairment of the GIP/GIPR axis in acromegaly, an additional aim was to assess the effect of GH/IGF-1 stimulation on GIP expression in the enteroendocrine cell line STC-1. RESULTS: Nearly 80% of GIPR-expressing somatotropinomas, all of them negative for gsp mutations, show increased GH secretion upon GIP stimulation, higher sensitivity to Forskolin but not to somatostatin analogs. Besides increased frequency of GH-PI, GIPR overexpression does not appear to affect acromegalic patients' clinical features. In STC-1 cells transfected with GIP promoter-driven luciferase vector, IGF-1 but not GH induced dose-dependent increase in luciferase activity. CONCLUSIONS: We demonstrate that GIPR mediates the GH-PI in a significant proportion of gsp- acromegalic patients. In these cases, the stimulatory effect of IGF-1 on GIP promoter support the hypothesis of a functional GH/IGF-1/GIP axis. Further studies based on larger cohorts and the development of a stable transgenic model with inducible GIPR overexpression targeted to pituitary somatotroph lineage will be mandatory to establish the real role of GIPR in the pathogenesis of somatotropinomas.


Subject(s)
Gastric Inhibitory Polypeptide/genetics , Gastric Inhibitory Polypeptide/metabolism , Growth Hormone-Secreting Pituitary Adenoma/genetics , Growth Hormone-Secreting Pituitary Adenoma/metabolism , Human Growth Hormone/metabolism , Pituitary Neoplasms/genetics , Pituitary Neoplasms/metabolism , Receptors, Gastrointestinal Hormone/genetics , Receptors, Gastrointestinal Hormone/metabolism , Acromegaly/genetics , Acromegaly/metabolism , Adolescent , Adult , Aged , Cell Line , Cell Lineage/genetics , Colforsin/pharmacology , DNA/genetics , Female , Humans , Insulin-Like Growth Factor I/metabolism , Male , Middle Aged , Primary Cell Culture , Promoter Regions, Genetic/genetics , Young Adult
14.
Radiología (Madr., Ed. impr.) ; 58(4): 246-256, jul.-ago. 2016. tab, ilus
Article in Spanish | IBECS | ID: ibc-154183

ABSTRACT

La otosclerosis es una otodistrofia primaria del hueso temporal que produce una hipoacusia de transmisión progresiva. El diagnóstico es generalmente clínico, pero en ocasiones es necesaria la realización de una tomografía computarizada multidetector (TCMD), que es la técnica de imagen de elección. El objetivo de este artículo es realizar una actualización sistemática de la utilidad de las técnicas de imagen en el diagnóstico y la valoración posquirúrgica de la otosclerosis, fundamentalmente del papel de la TCMD, con el fin de disminuir el riesgo quirúrgico (AU)


Otosclerosis is a primary osteodystrophy of the temporal bone that causes progressive conductive hearing loss. The diagnosis is generally clinical, but multidetector CT (MDCT), the imaging technique of choice, is sometimes necessary. The objective of this article is to systematically review the usefulness of imaging techniques for the diagnosis and postsurgical assessment of otosclerosis, fundamentally the role of MDCT, to decrease the surgical risk (AU)


Subject(s)
Humans , Male , Female , Otosclerosis , Diagnostic Imaging/instrumentation , Diagnostic Imaging/methods , Multidetector Computed Tomography/methods , Multidetector Computed Tomography , Stapes Surgery/methods , Stapes Surgery , Diagnosis, Differential , Hearing Loss, Sudden/complications , Hearing Loss, Sudden , Magnetic Resonance Imaging/methods , Magnetic Resonance Spectroscopy/methods , Postoperative Complications
15.
Radiologia ; 58(4): 246-56, 2016.
Article in English, Spanish | MEDLINE | ID: mdl-27267384

ABSTRACT

Otosclerosis is a primary osteodystrophy of the temporal bone that causes progressive conductive hearing loss. The diagnosis is generally clinical, but multidetector CT (MDCT), the imaging technique of choice, is sometimes necessary. The objective of this article is to systematically review the usefulness of imaging techniques for the diagnosis and postsurgical assessment of otosclerosis, fundamentally the role of MDCT, to decrease the surgical risk.


Subject(s)
Otosclerosis/diagnostic imaging , Humans , Magnetic Resonance Imaging , Multidetector Computed Tomography
16.
Calcif Tissue Int ; 99(2): 209-23, 2016 08.
Article in English | MEDLINE | ID: mdl-27075029

ABSTRACT

Large bone defects still represent a major burden in orthopedics, requiring bone-graft implantation to promote the bone repair. Along with autografts that currently represent the gold standard for complicated fracture repair, the bone tissue engineering offers a promising alternative strategy combining bone-graft substitutes with osteoprogenitor cells able to support the bone tissue ingrowth within the implant. Hence, the optimization of cell loading and distribution within osteoconductive scaffolds is mandatory to support a successful bone formation within the scaffold pores. With this purpose, we engineered constructs by seeding and culturing autologous, osteodifferentiated bone marrow mesenchymal stem cells within hydroxyapatite (HA)-based grafts by means of a perfusion bioreactor to enhance the in vivo implant-bone osseointegration in an ovine model. Specifically, we compared the engineered constructs in two different anatomical bone sites, tibia, and femur, compared with cell-free or static cell-loaded scaffolds. After 2 and 4 months, the bone formation and the scaffold osseointegration were assessed by micro-CT and histological analyses. The results demonstrated the capability of the acellular HA-based grafts to determine an implant-bone osseointegration similar to that of statically or dynamically cultured grafts. Our study demonstrated that the tibia is characterized by a lower bone repair capability compared to femur, in which the contribution of transplanted cells is not crucial to enhance the bone-implant osseointegration. Indeed, only in tibia, the dynamic cell-loaded implants performed slightly better than the cell-free or static cell-loaded grafts, indicating that this is a valid approach to sustain the bone deposition and osseointegration in disadvantaged anatomical sites.


Subject(s)
Bone and Bones/drug effects , Durapatite/pharmacology , Osseointegration/physiology , Tissue Engineering , Animals , Bone Substitutes/metabolism , Bone Transplantation/methods , Bone and Bones/metabolism , Cells, Cultured , Mesenchymal Stem Cells/cytology , Osteogenesis/physiology , Sheep , Tissue Engineering/methods , Tissue Scaffolds
17.
Qual Life Res ; 24(10): 2345-54, 2015 Oct.
Article in English | MEDLINE | ID: mdl-25846413

ABSTRACT

PURPOSE: The COPD assessment test (CAT) is a questionnaire that assesses the impact of chronic obstructive pulmonary disease (COPD) on health status, but some patients have difficulties filling it up by themselves. We examined whether the mode of administration of the Spanish version of CAT (self vs. interviewer) influences its scores and/or psychometric properties. METHODS: Observational, prospective study in 49 Spanish centers that includes clinically stable COPD patients (n = 153) and patients hospitalized because of an exacerbation (ECOPD; n = 224). The CAT was self-administered (CAT-SA) or administered by an interviewer (CAT-IA) based on the investigator judgment of the patient's capacity. To assess convergent validity, the Saint George's Respiratory Disease Questionnaire (SGRQ) and the London Chest Activity of Daily Living (LCADL) instrument were also administered. Psychometric properties were compared across modes of administration. RESULTS: A total of 118 patients (31 %) completed the CAT-SA and 259 (69 %) CAT-IA. Multiple regression analysis showed that mode of administration did not affect CAT scores. The CAT showed excellent psychometric properties in both modes of administration. Internal consistency coefficients (Cronbach's alpha) were high (0.86 for CAT-SA and 0.85 for CAT-IA) as was test-retest reliability (intraclass correlation coefficients of 0.83 for CAT-SA and CAT-IA). Correlations with SGRQ and LCADL were moderate to strong both in CAT-SA and CAT-IA, indicating good convergent validity. Similar results were observed when testing longitudinal validity. CONCLUSIONS: The mode of administration does not influence CAT scores or its psychometric properties. Hence, both modes of administration can be used in clinical practice depending on the physician judgment of patient's capacity.


Subject(s)
Pulmonary Disease, Chronic Obstructive/diagnosis , Surveys and Questionnaires , Activities of Daily Living , Aged , Aged, 80 and over , Female , Follow-Up Studies , Health Status , Humans , Male , Middle Aged , Prospective Studies , Psychometrics/instrumentation , Quality of Life , Reproducibility of Results , Socioeconomic Factors , Spain
18.
Actas dermo-sifiliogr. (Ed. impr.) ; 105(4): 371-377, mayo 2014. graf, tab
Article in Spanish | IBECS | ID: ibc-122009

ABSTRACT

INTRODUCCIÓN Y OBJETIVOS: La afectación articular en los pacientes con psoriasis puede llegar hasta el 30%. El diagnóstico y tratamiento precoz de la artropatía puede influenciar su evolución. El objetivo de nuestro trabajo es describir la experiencia de la unidad multidisciplinar de psoriasis y artritis psoriásica de nuestro hospital en el periodo 2009-2012. MATERIAL Y MÉTODOS: Elaboración de un programa asistencial y docente. En una primera fase se consensuaron los criterios de derivación a la futura unidad y se realizaron varias reuniones conjuntas para formar y concienciar a los especialistas. En una segunda fase se estableció una agenda de visitas conjunta psoriasis-reumato-dermato (PSORD) con periodicidad mensual. A partir de 2011 se desarrolló un programa formativo abierto a dermatólogos y reumatólogos interesados en crear un modelo de colaboración similar. RESULTADOS: Durante el periodo revisado se han efectuado 259 visitas (71% primeras, 8% no presentados) con una media de 8 (2-14) visitas por sesión. El 63% de visitas eran derivaciones de reumatología. En un 32% de casos hubo algún cambio en el diagnóstico y en un 47% cambios en el tratamiento. También se han hecho 3 cursos con participación de 15 médicos de 6 hospitales, y en 3 de ellos se han creado unidades parecidas. CONCLUSIONES: Este modelo ha comportado una mejora en el manejo de los pacientes que presentan problemas diagnósticos y/o de control de la enfermedad. También ha aumentado el diagnóstico precoz de la artritis y ha permitido indicar un tratamiento precoz. Además ha aumentado la colaboración entre ambas especialidades y el modelo creado se ha podido exportar a otros hospitales


INTRODUCTION AND OBJECTIVES: Up to 30% of patients with psoriasis develop joint disease, the course of which can be improved by early diagnosis and treatment. The aim of this study was to describe our experience with a new multidisciplinary psoriasis and psoriatic arthritis unit over a period of 4 years (2009-2012). MATERIAL AND METHODS: Implementation of a PSOriasis Rheumatology and Dermatology unit (PSORD) to provide patient care and physician training. In the first phase of the project, referral criteria for the unit were defined and several meetings were organized to train and prepare the specialists involved in the program. In the second phase, a schedule was drawn up for monthly patient visits with the PSORD team. Starting in 2011, training was offered to dermatologists and rheumatologists from other hospitals interested in implementing a similar model. RESULTS: A total of 259 visits (71% first visits, 8% no-shows) were scheduled during the period analyzed, with a median of 8 visits (range, 2-14 visits) per session. Sixty-three percent of the patients were referred from the rheumatology department. Diagnosis and treatment were modified in 32% and 47% of cases, respectively. Three training courses were held with 15 physicians from 6 hospitals, 3 of which created similar units. CONCLUSIONS: The PSORD model improved the management of difficult-to-diagnose and/or uncontrolled disease, the early diagnosis and treatment of psoriatic arthritis, and collaboration between dermatologists and rheumatologists. Finally, the model lends itself to being exported to other settings


Subject(s)
Humans , Psoriasis/epidemiology , Arthritis, Psoriatic/epidemiology , Hospital Units/organization & administration , Patient Care Team/organization & administration , Referral and Consultation/statistics & numerical data , Early Diagnosis
19.
Eur J Endocrinol ; 170(4): 627-35, 2014 Apr.
Article in English | MEDLINE | ID: mdl-24474740

ABSTRACT

INTRODUCTION: Patients with craniopharyngioma (CP) have disturbances of the hypothalamic-pituitary axis and serious comorbidities such as obesity. We hypothesized that the secretion of hormones regulating the nutritional status is altered in adult patients with CP compared with patients with non-functioning pituitary adenoma (NFPA). METHODS: WE INCLUDED 40 CP (50% MALES, MEAN AGE: 49.6±14.3 years) and 40 NFPA (72.5% males, mean age: 63.4±9.8 years) patients. We measured glucose, insulin, leptin, total ghrelin, peptide-YY (PYY) and cholecystokinin (CCK) during oral glucose tolerance test (OGTT). Fat mass (FM) was determined by dual X-ray absorptiometry. RESULTS: Gender distribution was not significantly different, but CP patients were significantly younger (P<0.001). CP patients had significantly higher BMI and FM than NFPA patients (BMI 32±8 vs 28±4 kg/m(2), P=0.009 and FM 37±9 vs 33±9%, P=0.02). Fasting glucose level (84±12 vs 78±11 mg/dl, P=0.03), leptin (27.9±34.2 vs 11.9±11.6 µg/l, P=0.008) and leptin levels corrected for percentage FM (0.66±0.67 vs 0.32±0.25 µg/l%, P=0.005) were significantly higher in CP than in NFPA patients, whereas ghrelin was significantly lower (131±129 vs 191±119 ng/l, P=0.035). Insulin, PYY and CCK did not differ significantly between groups. After glucose load, leptin decreased significantly in CP patients (P=0.019). In both groups, ghrelin decreased significantly during OGTT (both P<0.001). The percentage decline was significantly smaller for CP. PYY and CCK increased equally after glucose in both groups. CONCLUSION: Our patients with CP have more metabolic complications than our patients with NFPA. The levels of leptin and ghrelin at fasting status and after glucose seem to be altered in CP, whereas changes in insulin, PYY and CCK do not seem to be responsible for the metabolic changes in these patients.


Subject(s)
Appetite Regulation/physiology , Body Fat Distribution , Craniopharyngioma/metabolism , Obesity/metabolism , Pituitary Neoplasms/metabolism , Absorptiometry, Photon , Adenoma/metabolism , Adult , Aged , Blood Glucose , Case-Control Studies , Cholecystokinin/metabolism , Female , Ghrelin/metabolism , Glucose Tolerance Test , Humans , Insulin/metabolism , Leptin/metabolism , Male , Middle Aged , Peptide YY/metabolism
20.
Actas Dermosifiliogr ; 105(4): 371-7, 2014 May.
Article in English, Spanish | MEDLINE | ID: mdl-24360030

ABSTRACT

INTRODUCTION AND OBJECTIVES: Up to 30% of patients with psoriasis develop joint disease, the course of which can be improved by early diagnosis and treatment. The aim of this study was to describe our experience with a new multidisciplinary psoriasis and psoriatic arthritis unit over a period of 4 years (2009-2012). MATERIAL AND METHODS: Implementation of a PSOriasis Rheumatology and Dermatology unit (PSORD) to provide patient care and physician training. In the first phase of the project, referral criteria for the unit were defined and several meetings were organized to train and prepare the specialists involved in the program. In the second phase, a schedule was drawn up for monthly patient visits with the PSORD team. Starting in 2011, training was offered to dermatologists and rheumatologists from other hospitals interested in implementing a similar model. RESULTS: A total of 259 visits (71% first visits, 8% no-shows) were scheduled during the period analyzed, with a median of 8 visits (range, 2-14 visits) per session. Sixty-three percent of the patients were referred from the rheumatology department. Diagnosis and treatment were modified in 32% and 47% of cases, respectively. Three training courses were held with 15 physicians from 6 hospitals, 3 of which created similar units. CONCLUSIONS: The PSORD model improved the management of difficult-to-diagnose and/or uncontrolled disease, the early diagnosis and treatment of psoriatic arthritis, and collaboration between dermatologists and rheumatologists. Finally, the model lends itself to being exported to other settings.


Subject(s)
Arthritis, Psoriatic/therapy , Patient Care Team , Psoriasis/therapy , Dermatology , Female , Hospital Units/statistics & numerical data , Humans , Male , Referral and Consultation/statistics & numerical data , Rheumatology , Time Factors
SELECTION OF CITATIONS
SEARCH DETAIL