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1.
Analyst ; 149(8): 2317-2327, 2024 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-38466379

RESUMO

We investigate the subsurface composition of turbid materials at the micro scale by means of a portable non-invasive technique, micro-spatially offset Raman spectroscopy (micro-SORS), combined with shifted excitation Raman difference spectroscopy (SERDS). This combination enables the microscale layer analysis and allows to deal effectively with highly fluorescing samples as well as ambient light, all in a form of an in-house portable prototype device optimised for applications in heritage science. The instrument comprises ability to simultaneously collect multiple spectra by means of an optical fibre bundle, thus reducing the dead time and simplifying the ease of deployment of the technique. The performance of the synergy between micro-SORS and 785 nm SERDS dual-wavelength diode laser is demonstrated on a stratified mock-up painting samples including highly fluorescing painted layers. This instrumental approach could be ground-breaking in heritage science, due to the largely unmet need of analysing the molecular composition of subsurface of artworks non-invasively and in situ, and in the presence of fluorescent background and ambient light. Moreover, many other fields are expected to benefit from this technological advancement such as solar energy, forensic and food analytical areas.

2.
Artigo em Francês | MEDLINE | ID: mdl-39060146

RESUMO

Superior orbital frontal clefts are one of the rare craniofacial clefts described by Tessier in 1976, and occur most often sporadically. They are numbered 9, 10 and 11 in this classification, and are located respectively laterally, in the middle and medially to the upper part of the orbit. Their clinical expression is variable on soft tissue and bone, with possible dissociation of involvement. They range from a simple aesthetic defect to an eyes functional prognosis. CT scans are systematically required in this context. Their management must be adapted to the polymorphism of the damage, and is based on multidisciplinary approach. In case of ocular risk, the eyelid reconstruction is an emergency. In all other cases, treatment is deferred, but must be carried out at an early stage to ensure the child's healthy development.

3.
Schmerz ; 36(5): 350-356, 2022 Oct.
Artigo em Alemão | MEDLINE | ID: mdl-34586510

RESUMO

BACKGROUND: Coenesthesia, a rarely described symptom, is classified as schizophrenia according to ICD-10 and can occur independently of psychiatric diseases as a form of pain. The prevalence in chronic pain disorders is still unknown. The present study investigates the characteristics and psychological comorbidities of painful coenesthesia. MATERIALS AND METHODS: For the present study, all patients were pseudonymized and retrospectively analyzed qualitatively and quantitatively for existing coenesthesia. They were consecutively admitted, examined, and treated in the pain outpatient clinic of the University of Magdeburg over a five-year period (2013-2017). RESULTS: Of the 844 patients evaluated, 57 (6.7%) fulfilled the criteria of coenesthesia. The pain description may be rather bizarre if the patient is suffering from a psychiatric disorder, but it was also conspicuous by inappropriate localization for the pain description (tooth cramp instead of abdominal cramp). In our study, pain was mainly localized in the facial area (n = 35). Twenty-seven patients had no psychopathological abnormalities and 30 patients could be assigned an additional psychiatric diagnosis. In 23 patients, depression occurred as a psychological comorbidity. DISCUSSION AND CONCLUSION: Coenesthesia does not necessarily occur in connection or only with schizophrenia. Coenesthesia should be considered if the patient gives a bizarre description of pain, but also in common pain descriptions, such as burning, stabbing, cramping, or a feeling of pressure, if these are related to unusual locations (cramping tooth).


Assuntos
Dor Crônica , Transtornos Mentais , Dor Crônica/epidemiologia , Dor Crônica/psicologia , Comorbidade , Humanos , Clínicas de Dor , Prevalência , Estudos Retrospectivos
4.
BMC Cardiovasc Disord ; 21(1): 357, 2021 07 28.
Artigo em Inglês | MEDLINE | ID: mdl-34320950

RESUMO

BACKGROUND: Many patients with myocardial infarction with non-obstructive coronary arteries (MINOCA) are discharged without a known aetiology for their clinical presentation. This study sought to assess the effect of this 'indeterminate MINOCA' diagnosis on the prevalence of recurrent cardiovascular events and presentations to the Cardiac Emergency Department (CED). METHODS: We retrospectively analysed all patients meeting the diagnostic MINOCA criteria presenting at a large secondary hospital between January 2017 and April 2019. PARTICIPANTS: Patients were divided into the (1) 'indeterminate MINOCA', or (2) 'MINOCA with diagnosis' group. The primary outcome was the occurrence of major adverse cardiac events (MACE) defined as the composite of all-cause mortality, non-fatal myocardial infarction, stroke and any revascularisation procedure. Secondary outcomes were all recurrent visits at the CED, and MACE including unplanned cardiac hospitalisation. RESULTS: In 62/198 (31.3%) MINOCA patients, a conclusive diagnosis was found (myocardial infarction, (peri)myocarditis, cardiomyopathy, or miscellaneous). MINOCA patients with a confirmed diagnosis were younger compared to those with an indeterminate diagnosis (56.7 vs. 62.3 years, p = 0.007), had higher maximum troponin-T [238 ng/L vs. 69 ng/L, p < 0.001] and creatine kinase (CK) levels [212U/L vs. 152U/L, p = 0.007], and presented more frequently with electrocardiographic signs of ischaemia (71.0% vs. 47.1%, p = 0.002). Indeterminate MINOCA patients more often showed recurrent CED presentations (36.8% vs. 22.6%, p = 0.048), however the occurrence of cardiovascular events was equal (8.8 vs. 8.1%, p = 0.86). Multivariable analysis showed that elevated levels of troponin-T and CK, ST-segment deviation on electrocardiography, reduced left ventricular ejection fraction, regional wall motion abnormalities, and performance of additional examination methods were independent predictors for finding the underlying MINOCA cause. CONCLUSIONS: Only in one-third of MINOCA patients a conclusive diagnosis for the acute presentation was identified. Recurrent CED visits were more often observed in the indeterminate MINOCA group, while the occurrence of cardiovascular events was similar across groups. TRIAL REGISTRATION: Retrospectively registered.


Assuntos
Síndrome Coronariana Aguda/diagnóstico por imagem , Doença da Artéria Coronariana/diagnóstico por imagem , Infarto do Miocárdio/diagnóstico por imagem , Síndrome Coronariana Aguda/mortalidade , Adulto , Idoso , Doença da Artéria Coronariana/mortalidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/mortalidade , Valor Preditivo dos Testes , Prevalência , Prognóstico , Recidiva , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Fatores de Tempo
5.
Neth Heart J ; 29(6): 348-353, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33534114

RESUMO

BACKGROUND: In the region of South Limburg, the Netherlands, a shared ST-elevation myocardial infarction (STEMI) networking system (SLIM network) was implemented. During out-of-office hours, two percutaneous coronary intervention (PCI) centres-Maastricht University Medical Centre and Zuyderland Medical Centre-are supported by the same interventional cardiologist. The aim of this study was to analyse performance indicators within this network and to compare them with contemporary European Society of Cardiology guidelines. METHODS: Key time indicators for an all-comer STEMI population were registered by the emergency medical service and the PCI centres. The time measurements showed a non-Gaussian distribution; they are presented as median with 25th and 75th percentiles. RESULTS: Between 1 February 2018 and 31 March 2019, a total of 570 STEMI patients were admitted to the participating centres. The total system delay (from emergency call to needle time) was 65 min (53-77), with a prehospital system delay of 40 min (34-47) and a door-to-needle time of 22 min (15-34). Compared with in-office hours, out-of-office hours significantly lengthened system delays (55 (47-66) vs 70 min (62-81), p < 0.001), emergency medical service transport times (29 (24-34) vs 35 min (29-40), p < 0.001) and door-to-needle times (17 (14-26) vs 26 min (18-37), p < 0.001). CONCLUSIONS: With its effective patient pathway management, the SLIM network was able to meet the quality criteria set by contemporary European revascularisation guidelines.

6.
Mol Psychiatry ; 23(5): 1356-1367, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-28416808

RESUMO

Synapse development and neuronal activity represent fundamental processes for the establishment of cognitive function. Structural organization as well as signalling pathways from receptor stimulation to gene expression regulation are mediated by synaptic activity and misregulated in neurodevelopmental disorders such as autism spectrum disorder (ASD) and intellectual disability (ID). Deleterious mutations in the PTCHD1 (Patched domain containing 1) gene have been described in male patients with X-linked ID and/or ASD. The structure of PTCHD1 protein is similar to the Patched (PTCH1) receptor; however, the cellular mechanisms and pathways associated with PTCHD1 in the developing brain are poorly determined. Here we show that PTCHD1 displays a C-terminal PDZ-binding motif that binds to the postsynaptic proteins PSD95 and SAP102. We also report that PTCHD1 is unable to rescue the canonical sonic hedgehog (SHH) pathway in cells depleted of PTCH1, suggesting that both proteins are involved in distinct cellular signalling pathways. We find that Ptchd1 deficiency in male mice (Ptchd1-/y) induces global changes in synaptic gene expression, affects the expression of the immediate-early expression genes Egr1 and Npas4 and finally impairs excitatory synaptic structure and neuronal excitatory activity in the hippocampus, leading to cognitive dysfunction, motor disabilities and hyperactivity. Thus our results support that PTCHD1 deficiency induces a neurodevelopmental disorder causing excitatory synaptic dysfunction.


Assuntos
Disfunção Cognitiva/metabolismo , Proteínas de Membrana/deficiência , Sinapses/metabolismo , Animais , Fatores de Transcrição Hélice-Alça-Hélice Básicos/metabolismo , Cognição/fisiologia , Disfunção Cognitiva/genética , Proteína 4 Homóloga a Disks-Large/genética , Proteína 4 Homóloga a Disks-Large/metabolismo , Guanilato Quinases/genética , Guanilato Quinases/metabolismo , Hipocampo/metabolismo , Masculino , Proteínas de Membrana/genética , Proteínas de Membrana/metabolismo , Camundongos , Camundongos Endogâmicos C57BL , Neurônios/metabolismo , Transdução de Sinais , Sinapses/genética , Transmissão Sináptica
7.
HNO ; 66(Suppl 1): 7-15, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-28840259

RESUMO

BACKGROUND: Recurrent respiratory papillomatosis (RRP) is a rare, chronic disease of viral etiology which is characterized by multiple, recurrent growth of papillomas in the aerodigestive tract. MATERIALS AND METHODS: The surgical outcomes and the recurrence rates of 106 patients with RRP of the larynx were analyzed. The patients were treated at the University of Magdeburg between 1983 and 2014. The surgical outcomes of conventional and laser surgery regarding time to relapse and complications were compared. In addition, the influence of the quadrivalent vaccine Gardasil® on the disease was analyzed in 10 patients. RESULTS: Children with RRP had a statistically significant greater number of surgeries throughout their lifetimes compared to adult patients. There were no differences between the adult (n = 79) and juvenile (n = 27) groups in the time to relapse and the number of surgeries/year. The time to relapse and number of procedures/year were not influenced by the various surgical methods. Complications after conventional and laser surgery were not statistically different between the two groups. Serious complications and the need for a tracheotomy were only reported after conventional surgery. In the 10 patients who were immunized with Gardasil®, a statistically significant lower number of surgeries/year after vaccination was achieved. CONCLUSION: RRP is a rare disease. Treatment requires experience and may be very difficult. The analysis of the course of the disease has shown that the treatment of choice is surgical excision with the CO2 laser combined with the quadrivalent or polyvalent vaccine. Consequent vaccination of both boys and girls has the potential to reduce the occurrence of RRP.


Assuntos
Papiloma , Infecções por Papillomavirus , Infecções Respiratórias , Adolescente , Adulto , Idoso de 80 Anos ou mais , Criança , Feminino , Vacina Quadrivalente Recombinante contra HPV tipos 6, 11, 16, 18/uso terapêutico , Humanos , Lactente , Masculino , Infecções por Papillomavirus/prevenção & controle , Infecções por Papillomavirus/cirurgia , Infecções Respiratórias/prevenção & controle , Infecções Respiratórias/cirurgia , Estudos Retrospectivos , Resultado do Tratamento
8.
Clin Genet ; 92(5): 559-560, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-28940190

RESUMO

Schematic presentation of NTRK1 protein structure. Variants identified in this study are shown in red and previously reported variants associated with CIPA are shown in black (LRM, leucine rich motif; Ig, immunoglobulin-like domain; TM, transmembrane domain; TK, tyrosine kinase domain).


Assuntos
Hipo-Hidrose/complicações , Hipo-Hidrose/genética , Insensibilidade Congênita à Dor/complicações , Insensibilidade Congênita à Dor/genética , Receptor trkA/química , Receptor trkA/genética , Deleção de Sequência/genética , Aminoácidos , Humanos , Recém-Nascido , Masculino , Domínios Proteicos
9.
HNO ; 65(11): 923-932, 2017 Nov.
Artigo em Alemão | MEDLINE | ID: mdl-28710539

RESUMO

BACKGROUND: Recurrent respiratory papillomatosis (RRP) is a rare, chronic disease of viral etiology which is characterized by multiple, recurrent growth of papillomas in the aerodigestive tract. MATERIALS AND METHODS: The surgical outcomes and the recurrence rates of 106 patients with RRP of the larynx were analyzed. The patients were treated at the University of Magdeburg between 1983 and 2014. The surgical outcomes of conventional and laser surgery regarding time to relapse and complications were compared. In addition, the influence of the quadrivalent vaccine Gardasil® on the disease was analyzed in 10 patients. RESULTS: Children with RRP had a statistically significant greater number of surgeries throughout their lifetimes compared to adult patients. There were no differences between the adult (n = 79) and juvenile (n = 27) groups in the time to relapse and the number of surgeries/year. The time to relapse and number of procedures/year were not influenced by the various surgical methods. Complications after conventional and laser surgery were not statistically different between the two groups. Serious complications and the need for a tracheotomy were only reported after conventional surgery. In the 10 patients who were immunized with Gardasil®, a statistically significant lower number of surgeries/year after vaccination was achieved. CONCLUSION: RRP is a rare disease. Treatment requires experience and may be very difficult. The analysis of the course of the disease has shown that the treatment of choice is surgical excision with the CO2 laser combined with the quadrivalent or polyvalent vaccine. Consequent vaccination of both boys and girls has the potential to reduce the occurrence of RRP.


Assuntos
Papiloma , Infecções por Papillomavirus , Infecções Respiratórias , Adolescente , Adulto , Criança , Feminino , Vacina Quadrivalente Recombinante contra HPV tipos 6, 11, 16, 18/uso terapêutico , Humanos , Masculino , Papiloma/cirurgia , Infecções por Papillomavirus/cirurgia , Infecções Respiratórias/cirurgia , Estudos Retrospectivos , Resultado do Tratamento
10.
J Eur Acad Dermatol Venereol ; 29(4): 789-96, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25399481

RESUMO

BACKGROUND: Growing numbers of post-adolescent females are suffering from treatment-resistant or relapsing adult acne forms, therefore requiring the definition of safe and effective treatment options for this burdening disease. OBJECTIVES: To assess the efficacy of azelaic acid 15% gel (AzA) vs. no treatment during maintenance therapy of female adult acne and to compare its efficacy and safety vs. adapalene 0.1% gel (AD) during a 9-month period (3-month treatment and 6-month maintenance treatment). METHODS: A total of 55 women between 18 and 45 years with adult acne were included in this investigator-blind trial and randomized into three groups receiving AzA gel b.i.d. for 9 months (AzA9M, n = 17) or AzA gel b.i.d. for 3 months followed by a 6-month observational phase (AzA3M, n = 19) or AD gel once daily for 9 months (AD9M, n = 19). Parameters of efficacy, safety and patient-related factors were analysed. RESULTS: The reduction in lesion counts, severity and Dermatology Life Quality Index score was significant (P < 0.05) and comparable between groups during the treatment phase, while dryness and scaling were significantly lower (P < 0.05) in group AzA9M vs. AD9M. During maintenance, AzA9M was superior to AzA3M in the control of inflammatory lesions (P = 0.008) and total lesions (P = 0.014) at week 24. From week 12 to week 36, a mild relative increase in inflammatory lesions could be observed in all groups. In AzA3M, this increase exceeded that of AzA9M by 23.1% (P = 0.109), while the difference of total lesions diverged to 30.8% (P = 0.038). No significant differences could be detected between AzA9M and AD9M. Group AzA9M was non-inferior to AD9M (non-inferiority margin of 50% for the confidence limit for the relative effect) in the control of inflammatory acne lesions. CONCLUSIONS: AzA15% gel is a safe and effective treatment and maintenance treatment of female adult acne with non-inferior efficacy to AD 0.1% gel in the control of inflammatory acne.


Assuntos
Acne Vulgar/tratamento farmacológico , Adapaleno/administração & dosagem , Fármacos Dermatológicos/administração & dosagem , Ácidos Dicarboxílicos/administração & dosagem , Adapaleno/efeitos adversos , Adulto , Fármacos Dermatológicos/efeitos adversos , Ácidos Dicarboxílicos/efeitos adversos , Feminino , Géis , Humanos , Quimioterapia de Manutenção/métodos , Índice de Gravidade de Doença , Método Simples-Cego , Adulto Jovem
12.
Urologie ; 62(7): 715-721, 2023 Jul.
Artigo em Alemão | MEDLINE | ID: mdl-37138102

RESUMO

BACKGROUND: Radiation-induced cataracts represent a relevant risk to people occupationally exposed to radiation. The annual limit dose for the eye lens was reduced to 20 mSv per year by German legislation (radiation protect law StrlSchG 2017; 2013/59/Euratom) based on recommendation of International Commission on Radiation Protection (2011 ICRP) to avoid radiation-induced cataracts. OBJECTIVES: Is there a risk of exceeding the annual limit dose for the eye lens in routine urological practice without special radiation protection for the head? METHODS: As part of a prospective, monocentric dosimetry study, of 542 different urological, fluoroscopically guided interventions, the eye lens dose was determined using a forehead dosimeter (thermo-luminescence dosemeter TLD, Chipstrate) over a period of 5 months. RESULTS: An average head dose of 0.05 mSv per intervention (max. 0.29 mSv) was found with an average dose area product of 485.33 Gy/cm2. Significant influencing factors for a higher dose were a higher patient body mass index (BMI), a longer operation time, and a higher dose area product. The level of experience of the surgeon showed no significant influence. DISCUSSION: With 400 procedures per year or an average of 2 procedures per working day, the critical annual limit value for the eye lenses or for the risk of radiation-induced cataract would be exceeded without special protective measures. CONCLUSION: Consistently effective radiation protection of the eye lens is essential for daily work in uroradiological interventions. This may require further technical developments.


Assuntos
Catarata , Exposição Ocupacional , Lesões por Radiação , Humanos , Urologistas , Estudos Prospectivos , Exposição Ocupacional/efeitos adversos , Lesões por Radiação/epidemiologia , Catarata/epidemiologia
13.
Br J Dermatol ; 167(6): 1272-8, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22834773

RESUMO

BACKGROUND: Antineoplastic treatment for breast cancer is frequently associated with alopecia. Increasingly, changes in the texture and shape of regrowing hair after chemotherapy have been reported, without evaluation on a scientific basis. Optical coherence tomography (OCT) provides highly reproducible measurements of hair shaft parameters. OBJECTIVES: This study aims to evaluate hair shaft alterations using OCT in chemotherapy-induced alopecia and in patients taking tamoxifen. METHODS: The measurements of this prospective case series were performed on women aged 29-68 years, receiving either tamoxifen (n = 17) or chemotherapy (n = 17) prior to (T1) and after (T2) treatment. Each time, 20 hairs from two different sites of the scalp (frontal, occipital) were examined by OCT. The hair parameters were characterized by cross section (CS) and form factor (FF). The ratio of maximal to minimal hair diameters determined the FF. RESULTS: After chemotherapy, the CS of hairs was significantly lower compared with hairs taken at T1. The FF did not vary between T1 and T2 for the frontal area, but it did for the occipital area. In patients treated with tamoxifen, changes were observed neither in CS nor in FF. However, comparing both therapeutic groups, there were significant differences in CS and FF for T2, but not for T1. CONCLUSIONS: Reported changes in hair structure after chemotherapy may be due to reduction of hair shaft calibre and increase of FF in regrowing hair. The OCT technique is a promising method to gain more insight into chemotherapy-induced changes of hair morphology.


Assuntos
Alopecia/induzido quimicamente , Antineoplásicos Hormonais/efeitos adversos , Neoplasias da Mama/tratamento farmacológico , Folículo Piloso/efeitos dos fármacos , Folículo Piloso/patologia , Tamoxifeno/efeitos adversos , Adulto , Idoso , Alopecia/diagnóstico , Neoplasias da Mama/patologia , Quimioterapia Adjuvante/efeitos adversos , Feminino , Humanos , Pessoa de Meia-Idade , Estudos Prospectivos , Tomografia de Coerência Óptica/métodos
14.
J Support Oncol ; 9(6): 224-31, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-22055892

RESUMO

BACKGROUND: Immediate-release morphine sulfate (IRMS) remains the standard treatment for breakthrough cancer pain (BTCP), but its onset of effect does not match the rapid onset and short duration of most BTCP episodes. OBJECTIVE: This study will evaluate the efficacy/tolerability of fentanyl pectin nasal spray (FPNS) compared with IRMS for BTCP. METHODS: Patients (n = 110) experiencing one to four BTCP episodes/day while taking ≥ 60 mg/day oral morphine (or equivalent) for background cancer pain entered a double-blind, double-dummy (DB/DD), multiple-crossover study. Patients completing a titration phase (n = 84) continued to a DB/DD phase: 10 episodes of BTCP were randomly treated with FPNS and oral capsule placebo (five episodes) or IRMS and nasal spray placebo (5 episodes). The primary end point was pain intensity (P < .05 FPNS vs. IRMS) difference from baseline at 15 minutes (PID(15)). Secondary end points were onset of pain intensity (PI) decrease (≥ 1-point) and time to clinically meaningful pain relief (CMPR, ≥ 2-point PI decrease). Safety and tolerability were evaluated by adverse events (AEs) and nasal assessments. By-patient and by-episode analyses were completed. RESULTS: Compared with IRMS, FPNS significantly improved mean PID(15) scores. 57.5% of FPNS-treated episodes significantly demonstrated onset of PI improvement by 5 minutes and 95.7% by 30 minutes. CMPR (≥ 2-point PI decrease) was seen in 52.4% of episodes by 10 minutes. Only 4.7% of patients withdrew from titration (2.4% in DB/DD phase) because of AEs; no significant nasal effects were reported. CONCLUSION: FPNS was efficacious and well tolerated in the treatment of BTCP and provided faster onset of analgesia and attainment of CMPR than IRMS.


Assuntos
Analgésicos Opioides/uso terapêutico , Dor Irruptiva/tratamento farmacológico , Fentanila/uso terapêutico , Morfina/uso terapêutico , Neoplasias/fisiopatologia , Adulto , Idoso , Estudos Cross-Over , Método Duplo-Cego , Fentanila/administração & dosagem , Fentanila/efeitos adversos , Humanos , Pessoa de Meia-Idade , Morfina/efeitos adversos , Sprays Nasais , Comprimidos
15.
Arch Toxicol ; 85(3): 185-92, 2011 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-20737138

RESUMO

The aim of the study is to examine the cancer-predictive values of SMRP (soluble mesothelin-related peptides), CA125, and CYFRA21-1 as potential tumor markers for lung cancer and malignant mesothelioma in a cohort of workers formerly exposed to asbestos. A voluntary surveillance program has been established for German workers with former asbestos exposure. A subgroup of 626 subjects with a mean age of 63 years (range 53-70 years) at baseline was enrolled in an extended health examination program with high-resolution computer tomography (HRCT) of the chest and blood drawing between 1993 and 1997. Serum concentrations of SMRP, CA125, and CYFRA21-1 were measured in archived serum samples in 2005 and 2006. A mortality follow-up was conducted through 2007. So far, 12 cases with lung cancer and 20 cases with malignant mesothelioma have been observed in this cohort. The average time between sample collection and diagnosis was 4.7 years. Analyzed biomarkers showed low sensitivities (5-25%) and positive predictive values (4-30%) for both cancer sites. Marker combinations resulted in sensitivities between 5 and 50% and positive predictive values ranging from 3 to 14%. Even in those cases, where biomarker concentrations were available within 36 months before diagnosis, no trend for increasing biomarker levels was observed. The analyzed tumor markers were characterized by high specificities, but low sensitivities. SMRP, CA125, and CYFRA21-1 alone or in combination were less suitable to serve as predictors for the diagnosis of lung cancer or malignant mesothelioma. However, a prospective study with annual sampling might reveal a better predictive value of these markers.


Assuntos
Amianto/efeitos adversos , Biomarcadores Tumorais/sangue , Neoplasias Pulmonares/diagnóstico , Mesotelioma/diagnóstico , Neoplasias Pleurais/diagnóstico , Idoso , Antígenos de Neoplasias/sangue , Antígeno Ca-125/sangue , Estudos de Coortes , Feminino , Proteínas Ligadas por GPI/sangue , Humanos , Queratina-19/sangue , Neoplasias Pulmonares/mortalidade , Neoplasias Pulmonares/patologia , Masculino , Mesotelina , Mesotelioma/mortalidade , Mesotelioma/patologia , Pessoa de Meia-Idade , Neoplasias Pleurais/mortalidade , Neoplasias Pleurais/patologia , Valor Preditivo dos Testes , Estudos Prospectivos , Sensibilidade e Especificidade
16.
Clin Exp Immunol ; 160(2): 161-7, 2010 May.
Artigo em Inglês | MEDLINE | ID: mdl-20041883

RESUMO

Immunoglobulin G (IgG) molecules can have two completely opposite functions. On one hand, they induce proinflammatory responses and recruit innate immune effector cells during infection with pathogenic microorganisms or autoimmune disease. On the other hand, intravenous infusion of high doses of pooled IgG molecules from thousands of donors [intravenous IG (IVIG) therapy] represents an efficient anti-inflammatory treatment for many autoimmune diseases. Whereas our understanding of the mechanism of the proinflammatory activity of IgG is quite advanced, we are only at the very beginning to comprehend how the anti-inflammatory activity comes about and what cellular and molecular players are involved in this activity. This review will summarize our current knowledge and focus upon the two major models of either IVIG-mediated competition for IgG-triggered effector functions or IVIG-mediated adjustment of cellular activation thresholds used to explain the mechanism of the anti-inflammatory activity.


Assuntos
Anti-Inflamatórios/uso terapêutico , Imunoglobulina G/fisiologia , Imunoglobulinas Intravenosas/uso terapêutico , Inflamação/terapia , Receptores de IgG/fisiologia , Animais , Anticorpos Monoclonais/química , Anticorpos Monoclonais/uso terapêutico , Doenças Autoimunes/imunologia , Doenças Autoimunes/terapia , Glicosilação , Humanos , Fragmentos Fc das Imunoglobulinas/imunologia , Fragmentos Fc das Imunoglobulinas/fisiologia , Imunoglobulina G/química , Imunoglobulina G/imunologia , Imunoglobulinas Intravenosas/administração & dosagem , Inflamação/imunologia , Ativação Linfocitária/efeitos dos fármacos , Ativação Linfocitária/imunologia , Camundongos , Camundongos Knockout , Modelos Imunológicos , Processamento de Proteína Pós-Traducional , Receptores de IgG/deficiência , Receptores de IgG/genética
17.
Ann Rheum Dis ; 69 Suppl 1: i92-96, 2010 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19995755

RESUMO

Immunoglobulin G (IgG) molecules are a family of glycoproteins essential for defending the body against invading pathogens. The antibody constant domain is very potent in initiating proinflammatory pathways such as the activation of innate immune effector cells via cellular receptors specific for the antibody constant region (Fc receptors) and the activation of the complement pathway. During autoimmune disease the normally protective antimicrobial function of these molecules is targeted to healthy tissues often with disastrous consequences. Interestingly, one successful anti-inflammatory therapy for many autoimmune diseases is the infusion of high doses of IgG molecules, the so-called intravenous IgG therapy. How one class of molecules can have such opposing functions will be the major focus of this review.


Assuntos
Anti-Inflamatórios/imunologia , Imunoglobulina G/imunologia , Mediadores da Inflamação/imunologia , Animais , Doenças Autoimunes/tratamento farmacológico , Humanos , Imunoglobulinas Intravenosas/uso terapêutico , Camundongos , Modelos Imunológicos
18.
J Pediatr Endocrinol Metab ; 23(6): 565-78, 2010 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-20662330

RESUMO

Psychosexual development is influenced by biological and psychosocial factors. Human beings show a great variability in psychosexual development both between and within gender-groups. However, there are relatively stable gender-related behaviors and self-perceptions, in which males and females differ distinctly. There is strong evidence that high concentrations of androgens lead to more male-typical behavior and that this also influences gender identity. Disorders of sex development (DSD) provide the opportunity to analyze the role of different factors on psychosexual development. We examined 166 children age 4 to 12 with DSD using instruments concerning gender role behavior, gender identity, and friendship. Results underline the hypothesis, that androgens play a decisive role in the masculinization of gender role behavior in children. There are also some relations between the experience of gender change and psychosexual outcomes which have to be discussed. Nevertheless, results indicated a high congruence between the children's gender identity and gender of rearing.


Assuntos
Transtornos do Desenvolvimento Sexual/psicologia , Identidade de Gênero , Desenvolvimento Psicossexual/fisiologia , Desenvolvimento Sexual , Criança , Pré-Escolar , Transtornos do Desenvolvimento Sexual/genética , Transtornos do Desenvolvimento Sexual/fisiopatologia , Feminino , Amigos/psicologia , Humanos , Masculino
19.
Klin Monbl Augenheilkd ; 227(3): 181-4, 2010 Mar.
Artigo em Alemão | MEDLINE | ID: mdl-20234980

RESUMO

Silicone oil is used as intravitreal tamponading agent in surgery for rhegmatogenous retinal detachment (RRD) cases complicated with proliferative vitreoretinopathy (PVR). Recently, a number of case series have appeared where profound central visual loss has been found in eyes after uncomplicated vitrectomy with silicone tamponade for RRD in eyes with seemingly good visual potential. Several reports have demonstrated the migration of silicone oil droplets into the retina and the optic nerve, others the widespread loss of myelinated optic nerve fibres. These reports are reviewed, and it is concluded that caution is warranted when silicone oil is used in eyes with good visual potential. Finally the additional danger of central visual loss should be taken into consideration when deciding to use silicone oil or gas as intravitreal tamponade.


Assuntos
Escotoma/induzido quimicamente , Escotoma/prevenção & controle , Óleos de Silicone/efeitos adversos , Vitrectomia/efeitos adversos , Corpos Estranhos/etiologia , Humanos , Nervo Óptico , Retina
20.
J Fr Ophtalmol ; 43(4): 298-304, 2020 Apr.
Artigo em Francês | MEDLINE | ID: mdl-32087983

RESUMO

INTRODUCTION: Combined vitrectomy-lensectomy surgery is a safe and effective procedure. Nevertheless, it is frequently complicated by posterior capsule opacification and the formation of posterior synechiae. These complications can be avoided by placing a "bag in the lens" (BIL) implant. The objective of this study is to compare the visual acuity gain (VA) after combined vitrectomy-lensectomy surgery between a group implanted with the BIL technique and a group with implantation in the bag (LIB). MATERIAL AND METHODS: We included in the study all vitrectomy-lensectomy procedures for epiretinal membrane and vitreomacular traction performed between May 2013 and July 2016 at the Hospital and University Center of Caen. We compared the VA gain between the BIL group and the LIB group six months after surgery. RESULTS: A total of 33 patients were included in the study, consisting of 28 eyes in the BIL group and 8 eyes in the LIB group. The mean VA gain in the BIL group was -0.52 LogMAR (P<0.0001) and -0.56 LogMAR (P=0.0047) for the LIB group. The difference between the two groups was not significant (P=0.74). CONCLUSION: The use of the BIL technique during vitrectomy-lensectomy allows visual recovery as good as implantation within the capsular bag. In addition, this implant has the advantage of significantly reducing the occurrence of posterior synechiae and preventing anterior and posterior capsular proliferation.


Assuntos
Implante de Lente Intraocular/métodos , Lentes Intraoculares , Facoemulsificação/métodos , Acuidade Visual/fisiologia , Vitrectomia/métodos , Idoso , Idoso de 80 Anos ou mais , Terapia Combinada/métodos , Feminino , Humanos , Cristalino/cirurgia , Lentes Intraoculares/efeitos adversos , Masculino , Pessoa de Meia-Idade , Facoemulsificação/efeitos adversos , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos , Resultado do Tratamento , Transtornos da Visão/cirurgia , Vitrectomia/efeitos adversos
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