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1.
Minim Invasive Ther Allied Technol ; 31(1): 1-12, 2022 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-32410478

RESUMEN

To examine the uterine cavity and/or to perform hysteroscopic surgery, one has to access the uterine cavity through the cervix, distend the cavity with a fluid (liquid or gas) to visualize it with a telescope and/or a camera system and use energy (mechanical or thermal) to affect and/or remove tissue. Distension of the uterine cavity then is an important component of hysteroscopy, and during the last century, numerous attempts have been made to achieve an undistorted and unobstructed panoramic view of the uterine cavity. In order to achieve this goal, the uterine cavity has been distended with fluids using a variety of techniques, including gravity-assisted systems, pressure cuffed systems, and electronic pumps. Excessive fluid intravasation during hysteroscopy can lead to significant complications, and hence, automated fluid delivery systems have been developed recently to provide a safe and more efficient method of fluid delivery. This review aims to describe the evolution of distension media delivery systems chronologically from the 1900s to the present day.


Asunto(s)
Histeroscopía , Útero , Cuello del Útero , Femenino , Humanos , Embarazo
2.
J Obstet Gynaecol ; 41(4): 503-515, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-32662343

RESUMEN

Adnexal masses are rare in the young female population. The differential diagnosis includes ovarian masses, tubal/paratubal masses, masses related to the gastrointestinal tract (colon), infectious lesions, or pregnancy. Acute abdominal pain, and less commonly, precocious puberty or vaginal bleeding, are typical symptoms in these cases. The majority of adnexal masses in the paediatric and adolescent population are benign; however, a thorough preoperative assessment is essential to guide surgical intervention and optimise patient outcomes. The proper diagnosis of an adnexal mass, correct management (surgical or nonsurgical), and necessary referrals are of paramount importance. In the light of these cornerstones, this review describes the aetiologies, presenting symptoms, and appropriate diagnostic work-up for paediatric and adolescent patients affected by adnexal masses.


Asunto(s)
Dolor Abdominal/diagnóstico , Enfermedades de los Anexos/diagnóstico , Ginecología/métodos , Pediatría/métodos , Dolor Abdominal/etiología , Enfermedades de los Anexos/complicaciones , Adolescente , Niño , Diagnóstico Diferencial , Femenino , Humanos
3.
Minim Invasive Ther Allied Technol ; 30(5): 304-310, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-33660561

RESUMEN

Intrauterine adhesion (IUA) formation and the resulting Asherman's syndrome (AS) is an unfortunate clinical condition that occurs when the endometrium is damaged as a consequence of trauma, such as vigorous curettage, infection, or some Müllerian anomaly. The most frequent symptoms include hypo/amenorrhea, infertility, and adverse reproductive outcomes. Prevention of IUA formation is essential; however, when present, accurate diagnosis and surgical intervention (hysteroscopic adhesiolysis) are required. The outcome of this treatment is based on the technique and the extent of surgery performed which depends on the severity and complexity of the disease. Hence its classification becomes particularly important to determine a standardized therapy for each case and patient counseling regarding the prognosis. In this article, we aim to describe the IUAs classification systems that have been proposed comparing the merits and demerits of each one.


Asunto(s)
Ginatresia , Enfermedades Uterinas , Endometrio , Femenino , Ginatresia/patología , Ginatresia/cirugía , Humanos , Histeroscopía , Embarazo , Adherencias Tisulares/patología , Adherencias Tisulares/cirugía
4.
Reprod Biomed Online ; 41(1): 55-61, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32444259

RESUMEN

Asherman syndrome is a rare acquired clinical condition resulting in the obliteration of the uterine cavity causedby the presence of partial or complete fibrous intrauterine adhesions involving at least two-thirds of the uterine cavity potentially obstructing the internal cervical orifice. Common reported symptoms of the disease are alterations of the menstrual pattern with decreased menstrual bleeding leading up to amenorrhoea and infertility. Hysteroscopy is currently considered the gold standard diagnostic and therapeutic approach for patients with intrauterine adhesions. An integrated approach, including preoperative, intraoperative and postoperative therapeutic measures, however, are warranted owing to the complexity of the syndrome. This review aims to summarize the most recent evidence on the recommended preoperative, intraoperative and postoperative procedures to restore the uterine cavity and a functional endometrium, as well as on the concomitant use of adjuvant therapies to achieve optimal fertility outcomes.


Asunto(s)
Ginatresia/cirugía , Histeroscopía , Infertilidad Femenina/cirugía , Adherencias Tisulares/cirugía , Útero/cirugía , Femenino , Ginatresia/complicaciones , Humanos , Infertilidad Femenina/etiología , Adherencias Tisulares/etiología
5.
Can J Psychiatry ; 62(2): 109-114, 2017 02.
Artículo en Inglés | MEDLINE | ID: mdl-27310245

RESUMEN

Research and development of early intervention (EI) services for first-episode psychosis have brought much-needed transformation of service delivery for this serious mental disorder to many jurisdictions. The effectiveness of the EI model of service delivery is contingent on timely access to all evidence-informed treatment interventions, including a rational approach to pharmacotherapy. In this perspective paper, we present a brief review of the well-established effectiveness of clozapine in patients who clearly show lack of response to regular antipsychotic therapy. We concentrate, in particular, on the need to identify eligibility for clozapine therapy very early on following failure of treatment on 2 antipsychotic medications. We suggest that attention to the low use of clozapine in the very early phase of treatment of psychosis may be of particular value, as the response to clozapine at this stage is likely to produce larger benefits in other domains of outcomes because of the greater retention of patients' personal and social agency.


Asunto(s)
Antipsicóticos/uso terapéutico , Clozapina/uso terapéutico , Trastornos Psicóticos/tratamiento farmacológico , Canadá , Humanos
7.
Healthc Q ; 18 Spec No: 37-41, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26854547

RESUMEN

The Prevention and Early Intervention Program for Psychoses (PEPP) was established in 1997 for individuals with first-episode non-affective psychotic disorder. The objectives of PEPP are to improve outcomes for clients by providing a prompt, comprehensive, coordinated and effective treatment program as well as to advance research concerning early intervention for psychotic disorders. This article describes the clinical and research program and the lessons learned.


Asunto(s)
Diagnóstico Precoz , Trastornos Psicóticos/prevención & control , Trastornos Psicóticos/terapia , Desarrollo de Programa , Investigación
8.
Psychiatry Res ; 201(1): 25-33, 2012 Jan 30.
Artículo en Inglés | MEDLINE | ID: mdl-22284150

RESUMEN

Patients with a first episode of schizophrenia generally have increased phospholipid membrane breakdown products within the brain, while findings in chronic patients have been inconsistent. In this study we examine progressive changes in phosphorus membrane metabolites in the same patient group through the early years of schizophrenia in brain regions associated with the disease. Sixteen never-treated and medicated first episode schizophrenic patients were assessed at 10 months and 52 months after diagnosis. Sixteen matched volunteers were assessed at baseline and after 35 months. Phospholipid membrane metabolism was assessed with phosphorous magnetic resonance spectroscopy in the thalamus, cerebellum, hippocampus, anterior/posterior cingulate, prefrontal cortex, parieto-occipital cortex, superior temporal gyrus and temporal pole. At 10 months, glycerophosphocholine was increased in the anterior cingulate in patients as compared to controls. Glycerophosphocholine was decreased in the anterior cingulate and increased in the posterior cingulate and left superior temporal gyrus; glycerophosphoethanolamine was decreased in the left thalamus and increased in the left hippocampus within patients over time. At 52 months, compared to controls phosphocholine was increased in the left thalamus and glycerophosphoethanolamine was increased in the left hippocampus. These results imply a gradual inclusion of brain regions in schizophrenia where an initial increase, followed by a decrease in phospholipid membrane metabolites was observed. This pattern, observed in the early years of schizophrenia, is consistent with excitotoxic neural membrane breakdown in these regions.


Asunto(s)
Encéfalo/metabolismo , Membrana Celular/metabolismo , Fosfolípidos/metabolismo , Esquizofrenia/metabolismo , Adulto , Antipsicóticos/farmacología , Antipsicóticos/uso terapéutico , Encéfalo/efectos de los fármacos , Membrana Celular/efectos de los fármacos , Femenino , Humanos , Espectroscopía de Resonancia Magnética , Masculino , Neuroimagen , Esquizofrenia/tratamiento farmacológico
9.
J Gynecol Obstet Hum Reprod ; 51(4): 102350, 2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-35231646

RESUMEN

During the last decades, the number of couples with reproductive issues has substantially increased. Many different factors are implicated in reproductive failure, including uterine factors. Endometrial pathologies, such as endometrial polyps, hyperplasia, endometritis, and Mullerian anomalies, can also hinder embryo implantation. Hysteroscopy remains the gold standard for the evaluation and treatment of intrauterine pathology. Over the last few years, advances in hysteroscopic instrumentations and surgical techniques have significantly evolved, the refinement in technology, miniaturization of instruments, and improved image quality have rendered hysteroscopy a more patient and user-friendly procedure that has enhanced its use in reproductive medicine. Nowadays, hysteroscopy is essential in the evaluation and treatment of women with infertility. This article underscores the major technological breakthroughs achieved over the last few years with emphasis on the role of artificial intelligence, augmented reality, and 3D hysteroscopy, which can set new benchmarks in hysteroscopy applied to reproductive medicine.


Asunto(s)
Histeroscopía , Enfermedades Uterinas , Inteligencia Artificial , Endometrio/patología , Femenino , Humanos , Histeroscopía/métodos , Embarazo , Enfermedades Uterinas/patología , Enfermedades Uterinas/cirugía , Útero/anomalías , Útero/cirugía
10.
Br J Psychiatry ; 198(6): 448-56, 2011 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-21628707

RESUMEN

BACKGROUND: Thalamic glutamine loss and grey matter reduction suggest neurodegeneration in first-episode schizophrenia, but the duration is unknown. AIMS: To observe glutamine and glutamate levels, grey matter volumes and social functioning in patients with schizophrenia followed to 80 months after diagnosis. METHOD: Grey matter volumes and proton magnetic resonance spectroscopy metabolites in left anterior cingulate and left thalamus were measured in 17 patients with schizophrenia before medication and 10 and 80 months after diagnosis. Social functioning was assessed with the Life Skills Profile Rating Scale (LSPRS) at 80 months. RESULTS: The sum of thalamic glutamate and glutamine levels decreased over 80 months, and correlated inversely with the LSPRS. Thalamic glutamine and grey matter loss were significantly correlated in frontal, parietal, temporal and limbic regions. CONCLUSIONS: Brain metabolite loss is correlated with deteriorated social functioning and grey matter losses in schizophrenia, consistent with neurodegeneration.


Asunto(s)
Ácido Glutámico/metabolismo , Glutamina/metabolismo , Giro del Cíngulo , Esquizofrenia , Participación Social , Tálamo , Actividades Cotidianas , Adolescente , Adulto , Análisis de Varianza , Antipsicóticos/uso terapéutico , Ácido Aspártico/análogos & derivados , Ácido Aspártico/metabolismo , Mapeo Encefálico , Estudios de Casos y Controles , Femenino , Glutamina/deficiencia , Giro del Cíngulo/metabolismo , Giro del Cíngulo/patología , Humanos , Espectroscopía de Resonancia Magnética/métodos , Masculino , Escalas de Valoración Psiquiátrica , Esquizofrenia/tratamiento farmacológico , Esquizofrenia/metabolismo , Esquizofrenia/patología , Psicología del Esquizofrénico , Tálamo/metabolismo , Tálamo/patología , Factores de Tiempo
11.
Psychiatry Res ; 173(2): 155-7, 2009 Aug 30.
Artículo en Inglés | MEDLINE | ID: mdl-19520552

RESUMEN

Progressive volumetric losses in schizophrenia may be preceded by abnormal cell membrane metabolism. Longitudinal changes in membrane metabolites were quantified with (31)P MRS in the anterior cingulate and left thalamus of 13 first episode schizophrenic patients and 13 healthy volunteers at baseline and 30 months. Glycerophosphocholine was higher in patients at baseline in the anterior cingulate and glycerophosphoethanolamine was lower in the left thalamus at 30 months compared with patients at baseline and volunteers at 30 months. These observations suggest longitudinal changes in membrane metabolites consistent with a neurodegenerative process in certain cases of schizophrenia.


Asunto(s)
Glicerilfosforilcolina/metabolismo , Giro del Cíngulo/metabolismo , Fosfatidiletanolaminas/metabolismo , Esquizofrenia/metabolismo , Tálamo/metabolismo , Adulto , Estudios de Casos y Controles , Femenino , Lateralidad Funcional , Humanos , Espectroscopía de Resonancia Magnética/métodos , Masculino , Fósforo/metabolismo , Esquizofrenia/diagnóstico , Factores de Tiempo
12.
J Nerv Ment Dis ; 197(1): 6-14, 2009 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-19155804

RESUMEN

Individuals treated for psychotic disorders and mood disorders with psychotic features have a high likelihood of relapse across the life course. This study examines the relapse rate and its associated predictors for children and adolescents experiencing a first-episode and develops a statistical risk-model for prediction of time to first-relapse. A multiyear, retrospective cohort design was used to track youth, under the age of 18 years, who experienced a first-episode of psychosis, and were admitted to 1 of 6 inpatient hospital psychiatric units (N = 87). Participants were followed for at least 2 years (M = 3.9, SD = 1.3) using survival analysis. Approximately 60% of subjects experienced relapse requiring hospital readmission by the end of follow-up, with 33% readmitted within the first year and 44% within 2 years. Median survival time was 34 months. Cox proportional hazards regression identified 4 key risk factors for relapse: medication nonadherence, female gender, receiving clinical treatment, and a decline in social support before first admission.


Asunto(s)
Modelos Psicológicos , Trastornos del Humor/psicología , Trastornos Psicóticos/psicología , Adolescente , Niño , Estudios de Cohortes , Femenino , Humanos , Estimación de Kaplan-Meier , Masculino , Cumplimiento de la Medicación , Readmisión del Paciente/estadística & datos numéricos , Pronóstico , Modelos de Riesgos Proporcionales , Trastornos Psicóticos/terapia , Recurrencia , Estudios Retrospectivos , Medición de Riesgo/métodos , Factores de Riesgo , Factores Sexuales , Apoyo Social
13.
Early Interv Psychiatry ; 13(1): 24-29, 2019 02.
Artículo en Inglés | MEDLINE | ID: mdl-28524541

RESUMEN

BACKGROUND: The purpose of this study was to gain an in-depth understanding on the subject of relapse from the perspectives of family members of young people receiving services for a first-episode psychosis (FEP). METHODS: A qualitative descriptive approach, using focus group methods, was used to elicit experiences, understandings, and knowledge of relapse in FEP. Family members were recruited from 4 specialized early intervention programmes for psychosis in Canada. A total of 24 (6 male, 18 female) family members participated in the study. Thematic analysis was used to examine the data. RESULTS: The core underlying theme in all focus groups was worrying about relapse, which was often accompanied by significant levels of fear and anxiety, and was influenced by: (1) impact of an episode of psychosis; (2) limited confidence in recognizing and coping with relapse; (3) unmet needs for coping skills and emotional support and (4) unmet needs regarding frequency and continuity of communication with clinicians. CONCLUSIONS: Family members' unmet needs for relapse-focused education, support and communication with service providers and peers, can have a negative impact on relapse prevention. Addressing family members' education and support needs in a tailored manner (including preferences for types of peer support) can contribute positively to their confidence and ability to recognize and respond to relapse. This can help reduce fear and anxieties about relapse, and positively influence the ability to function as caregivers. Future research should focus on best approaches for providing education, sustained contact with the clinical team and family peer support.


Asunto(s)
Cuidadores/psicología , Familia/psicología , Evaluación de Necesidades , Trastornos Psicóticos/psicología , Adaptación Psicológica , Adolescente , Ansiedad/psicología , Canadá , Femenino , Grupos Focales , Humanos , Masculino , Persona de Mediana Edad , Investigación Cualitativa , Recurrencia
14.
Soc Psychiatry Psychiatr Epidemiol ; 43(11): 851-9, 2008 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-18575793

RESUMEN

BACKGROUND: Past research on stigmatization of the mentally ill has emphasized the importance of beliefs about mental illness in determining preferred social distance to those with such illnesses. In the current paper we examine the importance of perceived social norms in improving the prediction of social distance preferences. METHODS: Two hundred university students completed scales measuring their beliefs about either depression or schizophrenia; their perception of relevant social norms and their preferred level of social distance to someone with schizophrenia or depression. Measures of social desirability bias were also completed. RESULTS: The proportion of variance in preferred social distance was approximately doubled when perceived norms were added to beliefs about illness in a regression equation. Perceived norms were the most important predictor of social distance to an individual with either illness. A general preference for social distance towards a control, non-ill person was also an independent predictor of behavioral intentions toward someone with either schizophrenia or depression. CONCLUSIONS: Perceived social norms are an important contributor to an individual's social distance to those with mental illness. Messages designed to influence perceived social norms may help reduce stigmatization of the mentally ill.


Asunto(s)
Actitud Frente a la Salud , Trastornos Mentales/psicología , Prejuicio , Distancia Psicológica , Estereotipo , Adulto , Análisis Factorial , Femenino , Humanos , Masculino , Ontario , Distribución por Sexo , Percepción Social , Estudiantes , Universidades , Adulto Joven
15.
Schizophr Res ; 195: 469-474, 2018 05.
Artículo en Inglés | MEDLINE | ID: mdl-28888360

RESUMEN

Recovery from psychotic disorders includes both symptomatic and functional components. Progress in understanding recovery requires careful replication and extension of findings using comparable measures. In the current paper, we present a study of five year recovery rates in an early intervention program in London, Canada with the same operational criteria as those used in a previous report from the OPUS cohort in Denmark. Our analysis extends the OPUS reports by including additional potential predictors of overall recovery, such as cognitive functioning, adherence to medication and early social support, and examining rates and predictors of individual components of recovery at five year follow-up. Consistent with reports from OPUS, we found younger age of onset and lower initial severity of negative symptoms to predict greater likelihood of overall recovery. Different patterns of predictors emerge when we examine individual components of recovery. Adherence to medication during the first year was the sole independent predictor of remission of positive symptoms, while early social adjustment and social support were more likely to predict negative symptom and functional aspects of recovery at five years. Cognitive functioning, as represented by IQ, did not predict any aspects of recovery. Our findings suggest the importance of examining the predictors of individual components in the quest to improve overall recovery.


Asunto(s)
Intervención Educativa Precoz/métodos , Evaluación de Resultado en la Atención de Salud/métodos , Trastornos Psicóticos/psicología , Trastornos Psicóticos/rehabilitación , Recuperación de la Función/fisiología , Adolescente , Adulto , Femenino , Humanos , Estudios Longitudinales , Masculino , Cooperación del Paciente , Escalas de Valoración Psiquiátrica , Apoyo Social , Adulto Joven
16.
Early Interv Psychiatry ; 12(4): 720-725, 2018 08.
Artículo en Inglés | MEDLINE | ID: mdl-28627097

RESUMEN

AIM: It has been hypothesized that the first 5 years are critical in determining long-term recovery from psychotic disorders. We examine stability in recovery indices after 5 years for 56 patients treated in an early intervention programme for psychosis. METHODS: Assessments of symptom remission and functional recovery were carried out 5 and 10 years after initiation of treatment. RESULTS: Although overall rates of recovery were comparable at both times, there were significant changes for individuals reflecting both improvement and deterioration. CONCLUSIONS: Evidence concerning the critical period hypothesis should examine stability in individuals rather than relying on cumulative indices.


Asunto(s)
Trastornos Psicóticos/terapia , Adulto , Intervención Médica Temprana/métodos , Femenino , Humanos , Masculino , Trastornos Psicóticos/tratamiento farmacológico , Factores de Tiempo , Resultado del Tratamiento , Adulto Joven
17.
Schizophr Res ; 95(1-3): 111-4, 2007 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-17628442

RESUMEN

OBJECTIVES: Shorter duration of untreated psychosis (DUP) is often correlated with a poorer response to treatment. In this paper we test the hypothesis that the importance of DUP is moderated by early premorbid adjustment. METHOD: Three year prospective data were collected for 154 first episode patients. DUP, premorbid adjustment and symptoms were assessed at time of presentation for treatment and symptoms were reassessed after three years of treatment. RESULTS: DUP was correlated with level of symptoms at three years only for patients with better premorbid adjustment in childhood and early adolescence. CONCLUSIONS: These results suggest that DUP may have more of an impact on treatment response for those with a less pernicious, more reversible form of illness.


Asunto(s)
Trastornos Psicóticos/diagnóstico , Esquizofrenia/diagnóstico , Psicología del Esquizofrénico , Logro , Adaptación Psicológica , Adulto , Antipsicóticos/uso terapéutico , Manual Diagnóstico y Estadístico de los Trastornos Mentales , Femenino , Humanos , Masculino , Estudios Prospectivos , Escalas de Valoración Psiquiátrica/estadística & datos numéricos , Trastornos Psicóticos/tratamiento farmacológico , Trastornos Psicóticos/psicología , Factores de Riesgo , Esquizofrenia/tratamiento farmacológico , Ajuste Social , Factores de Tiempo , Resultado del Tratamiento
18.
Schizophr Res ; 91(1-3): 259-62, 2007 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-17291725

RESUMEN

Although duration of untreated psychosis (DUP) predicts treatment outcome as assessed by symptoms in first-episode psychosis, there is much less evidence concerning its relation to social functioning. We present the results of a prospective study of 163 first-episode psychosis patients examining occupational activity at three years, after initiation of treatment. Both shorter DUP and higher social support were significantly associated with more full time occupational activity at follow-up. The findings suggest the importance of reducing treatment delay and increasing social support in order to improve occupational outcomes for those with first-episode psychosis.


Asunto(s)
Antipsicóticos/uso terapéutico , Empleo/psicología , Trastornos Psicóticos/diagnóstico , Trastornos Psicóticos/tratamiento farmacológico , Adulto , Femenino , Estudios de Seguimiento , Humanos , Masculino , Cooperación del Paciente/estadística & datos numéricos , Estudios Prospectivos , Conducta Social , Apoyo Social , Factores de Tiempo , Lugar de Trabajo/psicología
19.
J Clin Diagn Res ; 11(3): QD06-QD07, 2017 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-28511462

RESUMEN

Endometrial polyps are localized overgrowth of endometrial glands and stoma through the uterine cavity. They are associated with postmenopausal bleeding, infertility and menorrhagia and are affected by unbalanced oestrogen therapy or increased frequency of tamoxifen exposure. We report a case of giant endometrial polyp in postmenopausal female without vaginal bleeding and hormone or drug use. A 65-year-old, postmenopausal female P3L2 with hypertension and Diabetes Mellitus (DM) came for routine health check-up. Her physical examination was normal. Pelvic examination uterus was multiparous sized, mid positioned and bilateral fornices were free. Patient was planned for hysteroscopic guided biopsy as her Ultrasonography (USG) showed endometrial thickness to be 12.3 mm. On hysteroscopy, there was hyperplastic endometrium with large endometrial polyp of size 8.5 cm. Polypectomy was done and the same was sent for histopathological evaluation. Report showed cystic hyperplasia without atypia. To summarize, postmenopausal female will not always present with symptoms and USG can also quite frequently miss the diagnosis, so proper evaluation is needed using hysteroscopy which is gold standard for diagnosis and treatment of endometrial polyp.

20.
Psychiatry Res ; 146(2): 127-35, 2006 Mar 31.
Artículo en Inglés | MEDLINE | ID: mdl-16497488

RESUMEN

Altered high energy and membrane metabolism, measured with phosphorus magnetic resonance spectroscopy (31P-MRS), has been inconsistently reported in schizophrenic patients in several anatomical brain regions implicated in the pathophysiology of this illness, with little attention to the effects of brain tissue type on the results. Tissue regression analysis correlates brain tissue type to measured metabolite levels, allowing for the extraction of "pure" estimated grey and white matter compartment metabolite levels. We use this tissue analysis technique on a clinical dataset of first episode schizophrenic patients and matched controls to investigate the effect of brain tissue specificity on altered energy and membrane metabolism. In vivo brain spectra from two regions, (a) the fronto-temporal-striatal region and (b) the frontal-lobes, were analyzed from 12 first episode schizophrenic patients and 11 matched controls from a (31)P chemical shift imaging (CSI) study at 4 Tesla (T) field strength. Tissue regression analyses using voxels from each region were performed relating metabolite levels to tissue content, examining phosphorus metabolite levels in grey and white matter compartments. Compared with controls, the first episode schizophrenic patient group showed significantly increased adenosine triphosphate levels (B-ATP) in white matter and decreased B-ATP levels in grey matter in the fronto-temporal-striatal region. No significant metabolite level differences were found in grey or white matter compartments in the frontal cortex. Tissue regression analysis reveals grey and white matter specific aberrations in high-energy phosphates in first episode schizophrenia. Although past studies report inconsistent regional differences in high-energy phosphate levels in schizophrenia, the present analysis suggests more widespread differences that seem to be strongly related to tissue type. Our data suggest that differences in grey and white matter tissue content between past studies may account for some of the variance in the literature.


Asunto(s)
Encéfalo/metabolismo , Encéfalo/fisiopatología , Espectroscopía de Resonancia Magnética/métodos , Esquizofrenia/metabolismo , Esquizofrenia/fisiopatología , Adulto , Manual Diagnóstico y Estadístico de los Trastornos Mentales , Femenino , Lóbulo Frontal/metabolismo , Lóbulo Frontal/fisiopatología , Humanos , Masculino , Fósforo , Análisis de Regresión , Esquizofrenia/diagnóstico , Factores de Tiempo
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