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1.
Br J Surg ; 107(13): 1826-1831, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-32687623

RESUMO

BACKGROUND: No formal guidelines exist for surveillance pouchoscopy following ileal pouch-anal anastomosis (IPAA) for ulcerative colitis. METHODS: All adults who had previously had IPAA for ulcerative colitis, and underwent a pouchoscopy between 1 January 2010 and 1 January 2020, were included. RESULTS: A total of 9398 pouchoscopy procedures were performed in 3672 patients. The majority of the examinations were diagnostic (8082, 86·0 per cent; 3260 patients) and the remainder were for routine surveillance (1316, 14·0 per cent; 412 patients). Thirteen patients (0·14 per cent of procedures) were found to have biopsy-proven neoplasia at the time of pouchoscopy; seven had low-grade dysplasia (LGD) (0·07 per cent; all located in the anal transition zone), none had high-grade dysplasia (HGD) and six (0·06 per cent) had invasive adenocarcinoma (4 in anal transition zone and 6 in pouch). Of the six patients with adenocarcinoma, four had neoplasia at the time of proctocolectomy (2 adenocarcinoma, 1 LGD, 1 HGD); all six were symptomatic with anal bleeding or pelvic pain at the time of pouchoscopy, had a negative surveillance pouchoscopy examination within 2 years of diagnosis of adenocarcinoma, had palpable masses on digital rectal examination, and had visible lesions at the time of pouchoscopy. CONCLUSION: Surveillance pouchoscopy is not recommended in asymptomatic patients because significant neoplasia following IPAA for ulcerative colitis is rare.


ANTECEDENTES: No existen unas recomendaciones formales para vigilancia endoscópica en pacientes a los que se les ha realizado un reservorio ileoanal (ileal pouch anal anastomosis, IPAA) por una colitis ulcerosa (ulcerative colitis, UC). MÉTODOS: Se incluyeron todos los pacientes adultos a los que se les había realizado previamente un IPAA por UC y se sometieron a una endoscopia del reservorio. RESULTADOS: Se realizaron un total de 9.398 procedimientos endoscópicos en 3.672 pacientes entre el 1/1/2010 y el 1/1/2020. La mayoría de las exploraciones fueron diagnósticas (n = 8.082; 86%; 3.260 pacientes) y el resto fueron de seguimiento (n = 1.316; 14%; 412 pacientes). Se descubrió que 13 pacientes tenían una neoplasia demostrada por biopsia (0,14%) en el momento de la endoscopia; siete pacientes tenían displasia de bajo grado (low-grade displasia, LGD) (0,074%; localizada en todos los casos en la zona de transición anal), ninguno tenía displasia de alto grado (high-grade displasia, HGD) y seis (0,064%) tenían un adenocarcinoma invasivo (cuatro en la zona de transición anal) y dos en el reservorio). De los seis pacientes con adenocarcinoma, 4 tenían neoplasia en el momento de la proctocolectomía (2 adenocarcinoma, uno LGD, uno HGD). Todos estos pacientes tenían síntomas de hemorragia anal o dolor pélvico en el momento de la endoscopia, se les había practicado una endoscopia previa reciente del reservorio en los dos años anteriores, presentaban una masa palpable en la exploración digital rectal, así como lesiones visibles en la endoscopia del reservorio. CONCLUSIÓN: La vigilancia endoscópica del reservorio no se recomienda en pacientes asintomáticos porque es raro que aparezca una neoplasia después del IPAA por UC.


Assuntos
Adenocarcinoma/diagnóstico por imagem , Assistência ao Convalescente , Colite Ulcerativa/cirurgia , Neoplasias do Colo/diagnóstico por imagem , Endoscopia Gastrointestinal , Complicações Pós-Operatórias/diagnóstico por imagem , Proctocolectomia Restauradora , Adenocarcinoma/patologia , Adulto , Assistência ao Convalescente/métodos , Assistência ao Convalescente/estatística & dados numéricos , Idoso , Neoplasias do Colo/patologia , Bolsas Cólicas/patologia , Bases de Dados Factuais , Endoscopia Gastrointestinal/métodos , Endoscopia Gastrointestinal/estatística & dados numéricos , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/patologia
2.
Dig Dis Sci ; 65(8): 2379-2387, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-31758431

RESUMO

BACKGROUND: Abdominal pain and opioid analgesic use are common in Crohn's disease (CD). AIMS: We sought to identify factors associated with abdominal pain in CD and evaluate the impact of opioid analgesics on pain and quality-of-life scores in this setting. METHODS: We performed a longitudinal cohort study using a prospective, consented IBD natural history registry from a single academic center between 2009 and 2013. Consecutive CD patients were followed for at least 1 year after an index visit. Data were abstracted regarding pain experience (from validated surveys), inflammatory activity (using endoscopic/histologic findings), laboratory studies, coexistent psychiatric disorders, medical therapy, opioid analgesic, and tobacco use. RESULTS: Of 542 CD patients (56.6% women), 232 (42.8%) described abdominal pain. Individuals with pain were more likely to undergo surgery and were more frequently prescribed analgesics and/or antidepressants/anxiolytics. Elevated ESR (OR 1.79; 95%CI 1.11-2.87), coexistent anxiety/depression (OR 1.87; 95%CI 1.13-3.09), smoking (OR 2.08; 95%CI 1.27-3.40), and opioid use (OR 2.46; 95%CI 1.33-4.57) were independently associated with abdominal pain. Eighty patients (14.8%) were prescribed opioids, while 31 began taking them at or after the index visit. Patients started on opioids demonstrated no improvement in abdominal pain or quality-of-life scores on follow-up compared to patients not taking opioids. CONCLUSIONS: Abdominal pain is common in CD and is associated with significant opioid analgesic utilization and increased incidence of anxiety/depression, smoking, and elevated inflammatory markers. Importantly, opioid use in CD was not associated with improvement in pain or quality-of-life scores. These findings reinforce the limitations of currently available analgesics in IBD and support exploration of alternative therapies.


Assuntos
Dor Abdominal/tratamento farmacológico , Analgésicos Opioides/uso terapêutico , Doença de Crohn/complicações , Sistema de Registros , Dor Abdominal/epidemiologia , Dor Abdominal/etiologia , Adulto , Doença de Crohn/psicologia , Feminino , Humanos , Incidência , Estudos Longitudinais , Masculino , Pennsylvania/epidemiologia , Qualidade de Vida
3.
Genes Immun ; 13(3): 245-52, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22170232

RESUMO

The major histocompatibility complex (MHC) on chromosome 6p is an established risk locus for ulcerative colitis (UC) and Crohn's disease (CD). We aimed to better define MHC association signals in UC and CD by combining data from dense single-nucleotide polymorphism (SNP) genotyping and from imputation of classical human leukocyte antigen (HLA) types, their constituent SNPs and corresponding amino acids in 562 UC, 611 CD and 1428 control subjects. Univariate and multivariate association analyses were performed, controlling for ancestry. In univariate analyses, absence of the rs9269955 C allele was strongly associated with risk for UC (P = 2.67 × 10(-13)). rs9269955 is a SNP in the codon for amino acid position 11 of HLA-DRß1, located in the P6 pocket of the HLA-DR antigen binding cleft. This amino acid position was also the most significantly UC-associated amino acid in omnibus tests (P = 2.68 × 10(-13)). Multivariate modeling identified rs9269955-C and 13 other variants in best predicting UC vs control status. In contrast, there was only suggestive association evidence between the MHC and CD. Taken together, these data demonstrate that variation at HLA-DRß1, amino acid 11 in the P6 pocket of the HLA-DR complex antigen binding cleft is a major determinant of chromosome 6p association with UC.


Assuntos
Cromossomos Humanos Par 6 , Colite Ulcerativa/genética , Predisposição Genética para Doença , Cadeias beta de HLA-DR/genética , Alelos , Substituição de Aminoácidos , Doença de Crohn/genética , Frequência do Gene , Estudo de Associação Genômica Ampla , Genótipo , Humanos , Polimorfismo de Nucleotídeo Único
4.
Minerva Gastroenterol Dietol ; 58(2): 101-22, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22643594

RESUMO

The chronic course of inflammatory bowel disease (IBD) leads to recurrent episodes of active clinical symptoms, as well as long term complications, including hospitalizations, surgeries, and a decreased quality of life. Biologic agents have been shown to be effective for the induction and maintenance of remission in patients with moderate to severe IBD, and may alter the natural history of disease. Loss of response to biologic therapy is a common problem in clinical practice, the reasons for which are likely multifactorial; antibody development, alterations in drug clearance, and possibly a change to a non-TNF-driven inflammatory mechanism. Several studies have evaluated interventions that may lead to an increased rate of response and an increase in the durability. In this review, we evaluate ways to maximize anti-TNF treatment by administering scheduled therapy, using concomitant immunomodulator therapy, escalating dosage, and switching between biologic agents and classes. Finally, the role of antibody to infliximab (ATI) and infliximab serum trough levels are discussed in the context of optimizing biologic therapy for inflammatory bowel disease.


Assuntos
Produtos Biológicos/uso terapêutico , Doenças Inflamatórias Intestinais/tratamento farmacológico , Adalimumab , Anticorpos Monoclonais/uso terapêutico , Anticorpos Monoclonais Humanizados/uso terapêutico , Produtos Biológicos/administração & dosagem , Resistência a Medicamentos , Humanos , Fatores Imunológicos/uso terapêutico , Infliximab , Inibidores do Fator de Necrose Tumoral
5.
Animal ; 14(4): 807-813, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-31662128

RESUMO

The research has shown the interesting contributions of shearing in mid-gestation on the performance of lambs from birth to weaning. Other studies have reported that shearing at early pregnancy influences the development of the placenta and lamb live weight at birth. However, there was a lack of information on the effect of early-prepartum shearing on the behavior of the offspring from weaning onward. This study evaluated the effect of shearing ewes at 50 days of gestation on the growth, reproductive behavior and response to a gastrointestinal parasite challenge in the female offspring from weaning to 18 months old. Fifty-seven Polwarth female lambs were used, 22 being singles and 35 twins born to ewes either shorn at 50 days of pregnancy (PS, n = 23) or shorn at 62 days postpartum (U, control, n = 34) resulting in four subgroups: single lambs born to PS ewes (n = 8), born to U ewes (n = 14), twin lambs born to PS ewes (n = 15) or born to U ewes (n = 20). All progeny were managed together under improved pasture with a minimum forage allowance of 6% live weight on dry basis. Body weight, body condition score and fecal eggs count were recorded every 14 days from weaning to 18 months of age. Concentrations of progesterone were measured weekly (from 4 to 10 months of age and from 14 to 18 months of age) to establish the onset of puberty. Ovulation rate at an induced and a natural heat (545 ± 1.0 and 562 ± 1.0 day old) was recorded. Prepartum shearing did not affect the age at puberty or the ovulation rate of female offspring, but those born as singles were more precocious ( P = 0.03) and heavier ( P = 0.02) at puberty than twin born lambs. Both the average value of parasite egg count ( P = 0.0 7) and the Famacha index ( P = 0.02) for the entire study period were lower in lambs born to prepartum shorn ewes than those born to postpartum shorn ewes. In conclusion, shearing at 50 days of gestation did not affect the growth or the reproductive behavior of female offspring. However, female lambs born from ewe shorn during gestation showed a better response to the parasitic challenge, and further research is required to confirm this.


Assuntos
Comportamento Sexual Animal , Ovinos/fisiologia , Animais , Feminino , Parto , Período Pós-Parto , Gravidez , Ovinos/crescimento & desenvolvimento , Desmame , Lã/fisiologia
6.
J Am Coll Cardiol ; 75(5): 482-494, 2020 02 11.
Artigo em Inglês | MEDLINE | ID: mdl-32029130

RESUMO

BACKGROUND: Enterococcal endocarditis (EE) is a growing entity in Western countries. However, quality data from large studies is lacking. OBJECTIVES: The purpose of this study was to describe the characteristics and analyze the prognostic factors of EE in the GAMES cohort. METHODS: This was a post hoc analysis of a prospectively collected cohort of patients from 35 Spanish centers from 2008 to 2016. Characteristics and outcomes of 516 cases of EE were compared with those of 3,308 cases of nonenterococcal endocarditis (NEE). Logistic regression and Cox proportional hazards regression analysis were performed to investigate risk factors for in-hospital and 1-year mortality, as well as relapses. RESULTS: Patients with EE were significantly older; more frequently presented chronic lung disease, chronic heart failure, prior endocarditis, and degenerative valve disease; and had higher median age-adjusted Charlson score. EE more frequently involved the aortic valve and prosthesis (64.3% vs. 46.7%; p < 0.001; and 35.9% vs. 28.9%; p = 0.002, respectively) but less frequently pacemakers/defibrillators (1.5% vs. 10.5%; p < 0.001), and showed higher rates of acute heart failure (45% vs. 38.3%; p = 0.005). Cardiac surgery was less frequently performed in EE (40.7% vs. 45.9%; p = 0.024). No differences in in-hospital and 1-year mortality were found, whereas relapses were significantly higher in EE (3.5% vs. 1.7%; p = 0.035). Increasing Charlson score, LogEuroSCORE, acute heart failure, septic shock, and paravalvular complications were risk factors for mortality, whereas prior endocarditis was protective and persistent bacteremia constituted the sole risk factor for relapse. CONCLUSIONS: Besides other baseline and clinical differences, EE more frequently affects prosthetic valves and less frequently pacemakers/defibrillators. EE presents higher rates of relapse than NEE.


Assuntos
Endocardite Bacteriana/epidemiologia , Enterococcus faecalis/isolamento & purificação , Infecções por Bactérias Gram-Positivas/epidemiologia , Idoso , Estudos de Coortes , Endocardite Bacteriana/microbiologia , Feminino , Infecções por Bactérias Gram-Positivas/microbiologia , Humanos , Masculino , Pessoa de Meia-Idade , Espanha/epidemiologia
7.
Science ; 253(5020): 673-5, 1991 Aug 09.
Artigo em Inglês | MEDLINE | ID: mdl-1871602

RESUMO

A function for transcription in the mechanism of a circadian oscillator was investigated with the reversible transcription inhibitor 5,6-dichloro-1-beta-D- ribobenzimidazole (DRB). Two-hour treatments with DRB shifted the phase of the circadian rhythm of the isolated eye of Aplysia, and continuous treatments of DRB lengthened the free running period of this rhythm. Camptothecin, an inhibitor of transcription that is structurally unrelated to DRB, had similar effects on the circadian rhythm. These results suggest that transcription may be part of the circadian oscillating mechanism.


Assuntos
Camptotecina/farmacologia , Ritmo Circadiano/efeitos da radiação , Diclororribofuranosilbenzimidazol/farmacologia , Fenômenos Fisiológicos Oculares , Transcrição Gênica/efeitos dos fármacos , Animais , Aplysia , Olho/efeitos dos fármacos , Técnicas In Vitro , Fatores de Tempo , Uridina/metabolismo
8.
Science ; 262(5130): 97-9, 1993 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-17742966

RESUMO

The recently discovered homologous series HgBa(2)Can-1 Cun O2n+2+delta possesses remarkable properties. A superconducting transition temperature, T(c), as high as 133 kelvin has been measured in a multiphase Hg-Ba-Ca-Cu-O sample and found to be attributable to the Hg-1223 compound. Temperature-dependent electrical resistivity measurements under pressure on a (> 95%) pure Hg-1223 phase are reported. These data show that T(c) increases steadily with pressure at a rate of about 1 kelvin per gigapascal up to 15 gigapascals, then more slowly and reaches a T(c) = 150 kelvin, with the onset of the transition at 157 kelvin, for 23.5 gigapascals. This large pressure variation (as compared to the small effects observed in similar compounds with the optimal T(c)) strongly suggests that higher critical temperatures could be obtained at atmospheric pressure.

9.
Science ; 292(5514): 75-7, 2001 Apr 06.
Artigo em Inglês | MEDLINE | ID: mdl-11283353

RESUMO

We studied the pressure and temperature dependence of the electrical resistivity of the superconducting compound magnesium diboride (MgB(2)). The superconducting transition temperature decreases monotonically with pressure, being parabolic or linear, depending on samples. The rate of decrease under pressure is higher than in conventional superconductors. We discuss our results in terms of the semimetallic character of the electronic band structure of MgB(2).

10.
J Phys Condens Matter ; 31(8): 085401, 2019 Feb 27.
Artigo em Inglês | MEDLINE | ID: mdl-30530951

RESUMO

BaFe2Se3 is a potential superconductor material exhibiting transition at 11 K and ambient pressure. Here we extended the structural and performed electrical resistivity measurements on this compound up to 51 GPa and 20 GPa, respectively, in order to distinguish if the superconductivity in this sample is intrinsic to the BaFe2Se3 phase or if it is originating from minor FeSe impurities that show a similar superconductive transition temperature. The electrical resistance measurements as a function of pressure show that at 5 GPa the superconducting transition is observed at around 10 K, similar to the one previously observed for this sample at ambient pressure. This indicates that the superconductivity in this sample is most likely intrinsic to the BaFe2Se3 phase and not to FeSe with T c > 20 K at these pressures. Further increase in pressure suppressed the superconductive signal and the sample remained in an insulating state up to the maximum achieved pressure of 20 GPa. Single-crystal and powder x-ray diffraction measurements revealed two structural transformations in BaFe2Se3: a second order transition above 3.5 GPa from Pnma (CsAg2I3-type structure) to Cmcm (CsCu2Cl3-type structure) and a first order transformation at 16.6 GPa. Here, γ-BaFe2Se3 transforms into δ-BaFe2Se3 (Cmcm, CsCu2Cl3-type average structure) via a first order phase transition mechanism. This transition is characterized by a significant shortening of the b lattice parameter of γ-BaFe2Se3 (17%) and accompanied by an anisotropic expansion in the orthogonal ac plane at the transition point.

11.
Forensic Sci Int ; 166(2-3): 155-63, 2007 Mar 02.
Artigo em Inglês | MEDLINE | ID: mdl-16781100

RESUMO

Several commercial PCR multiplex kits incorporate the amelogenin locus for the purpose of human gender identification. Consequently, erroneous results in the electropherogram profile of this locus can carry important forensic implications. In this study, dropout of the amelogenin Y allele was detected in 5 out of 77 phenotypically normal Kathmandu males using the AmpFlSTR Identifiler kit. A battery of male-specific markers including SNPs, STRs, STSs, and a minisatellite were amplified for the five amelogenin null samples in order to delineate the breakpoints of the deletions as well as assess the overall integrity of the Y-chromosome. This study represents the first to examine the haplogroup affiliation of the AMGY deletions. The analyses performed suggest a single origin for the five deletions as indicated by their allocation to a specific Y-haplogroup (J2b2-M241), related Y-STR haplotypes and identical regional localization of breakpoints. The age estimated from the microsatellite variation for the amelogenin deletions (if they are associated by descent) is approximately 6.5+/-3.3 ky, younger than the previously reported related age of the M241 haplogroup representatives (13-14 ky). Our data in combination with previous publications suggest a concentration of afflicted individuals in the Indian subcontinent, possibly as a result of common ancestry. The elevated incidence of the amelogenin dropout in these populations accentuates the need to utilize other loci for gender determination in order to obtain an accurate set of inclusion criteria in forensic casework.


Assuntos
Amelogenina/genética , Deleção Cromossômica , Cromossomos Humanos Y , Alelos , Impressões Digitais de DNA , Marcadores Genéticos , Haplótipos , Humanos , Índia , Masculino , Repetições de Microssatélites , Filogenia , Reação em Cadeia da Polimerase
12.
Actas Urol Esp ; 29(1): 64-9, 2005 Jan.
Artigo em Espanhol | MEDLINE | ID: mdl-15786765

RESUMO

OBJECTIVES: Our aim is to determine the expression of the cerbB-2 oncoprotein in prostate cancers using an immunohistochemistry staining and to compare these results with several clinical and histological prognostic factors. METHODS: An immunohistochemical staining using the cerbB-2 monoclonal antibody (Dako) was performed in 32 radical prostatectomy specimens diagnosed of adenocarcinoma. The intensity of cerbB-2 expression was evaluated with a scale that variated from 0 (no staining) to 3+ (strong complete membrane staining) according to published guidelines. Association of cerbB-2 index immunoreactivity with clinical and histological prognostic factors was examined. RESULTS: Definite positive membranous staining was detected in 14 of 32 neoplastic cases (44%). Such overexpression was correlated with higher Gleason grade (p=0.04) and higher stage of disease (p=0.038). CONCLUSIONS: 1) This study shows that 44% of all prostate cancer express the cerbB-2 oncoprotein with immunohistochemical technique. 2) These findings suggest that is necessary to standardize the immunohistochemical staining procedure with cerbB-2 in prostate adenocarcinoma. 3) The level of cerbB-2 expression was correlated with Gleason grade and clinical stage.


Assuntos
Adenocarcinoma/metabolismo , Neoplasias da Próstata/metabolismo , Receptor ErbB-2/metabolismo , Adenocarcinoma/diagnóstico por imagem , Adenocarcinoma/patologia , Idoso , Biópsia , Humanos , Técnicas Imunoenzimáticas , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Neoplasias da Próstata/diagnóstico por imagem , Neoplasias da Próstata/patologia , Estudos Retrospectivos , Ultrassonografia
13.
An Med Interna ; 22(5): 244-7, 2005 May.
Artigo em Espanhol | MEDLINE | ID: mdl-16001943

RESUMO

The infective endocarditis is defined mainly as the infection of the internal surface of the heart, affecting to the cardiac valves although it can also do it to the septos, the tendinosas cords or endocardio mural. Around the origin, the diagnosis and the treatment of the disease, a considerable controversy has taken place. In this sense, basic criteria exist that they define to the infective endocarditis; however, particular situations are appraised in which the meticulous study is essential from the patient, doing special reference to the origin agents and, more in particular, to the fungal endocarditis.


Assuntos
Endocardite Bacteriana , Anti-Infecciosos/uso terapêutico , Anticoagulantes/uso terapêutico , Embolia/etiologia , Embolia/prevenção & controle , Endocardite/diagnóstico , Endocardite/tratamento farmacológico , Endocardite/cirurgia , Endocardite Bacteriana/diagnóstico , Endocardite Bacteriana/tratamento farmacológico , Endocardite Bacteriana/etiologia , Endocardite Bacteriana/cirurgia , Endocardite Bacteriana Subaguda/tratamento farmacológico , Próteses Valvulares Cardíacas/efeitos adversos , Humanos , Micoses/diagnóstico , Micoses/tratamento farmacológico , Micoses/cirurgia , Infecções Relacionadas à Prótese/diagnóstico , Infecções Relacionadas à Prótese/tratamento farmacológico , Infecções Relacionadas à Prótese/etiologia , Infecções Relacionadas à Prótese/cirurgia
14.
Aliment Pharmacol Ther ; 42(3): 330-42, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26031921

RESUMO

BACKGROUND: Clinical factors were previously identified as predictors of short-term treatment efficacy in Crohn's disease (CD). The PRECiSE 3 (P3) 7-year trial provides an opportunity to study predictors of short- and long-term clinical remission among CD patients treated with certolizumab pegol (CZP). AIM: To identify factors that influence long-term remission of CD with CZP treatment. METHODS: Patients who had completed placebo-controlled studies (PRECiSE 1/PRECiSE 2, P1/P2) enrolled in P3 and received open-label CZP 400 mg every 4 weeks up to 7 years. Baseline predictors included, but were not limited to, smoking status, disease duration, prior inflammatory bowel disease (IBD) surgery, Harvey-Bradshaw Index (HBI), albumin, haematocrit and CZP exposure; association with time to initial remission (HBI ≤4) was tested for patients who received CZP in P1/P2; time to loss of remission/frequency of maintenance of remission was also tested. Univariate analyses and multivariate Cox or logistic regression models were used. RESULTS: Predictors for initial remission (N = 377) included age, haematocrit, prior IBD surgery and entry HBI (P < 0.05 for all). Predictors for loss of remission (N = 437) included HBI, serum albumin concentration, haematocrit, smoking status and exposure. Predictors of maintenance of remission (N = 437) included haematocrit, IBD surgery, HBI, disease duration, serum albumin concentration and exposure. Significant predictors were confirmed with stepwise multivariate regression models. CONCLUSIONS: These analyses identified several influential parameters for short-and long-term remission of Crohn's disease with certolizumab pegol treatment. The data yield valuable hypotheses regarding factors that influence certolizumab pegol treatment. More investigation is needed. (ClinicalTrials.gov identifier NCT00552058).


Assuntos
Certolizumab Pegol/uso terapêutico , Doença de Crohn/tratamento farmacológico , Adulto , Método Duplo-Cego , Feminino , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
15.
Brain Res Mol Brain Res ; 19(3): 203-10, 1993 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-8412561

RESUMO

Electrical stimulation of peripheral nerves of isolated pleural-pedal ganglia, an in vitro analogue of long-term behavioral training in Aplysia, produced changes in the synthesis of specific proteins in pleural sensory neurons. The changes in incorporation of [35S]methionine into proteins occurring 24 h after electrical stimulation (late) were determined and compared with changes occurring immediately after stimulation (early). Eight proteins were affected 24 h after electrical stimulation. Three of these proteins were also affected immediately after electrical stimulation. Two of the proteins affected late are components of the cytoskeleton. One protein was identified as actin. The other protein was purified from preparative 2D-gels and partial amino acid sequences of 3 peptides derived from this protein were determined. The peptide sequences were found to be identical to those of an Aplysia intermediate filament protein.


Assuntos
Actinas/biossíntese , Aplysia/metabolismo , Condicionamento Operante/fisiologia , Proteínas de Filamentos Intermediários/biossíntese , Proteínas do Tecido Nervoso/biossíntese , Neurônios Aferentes/metabolismo , Sequência de Aminoácidos , Animais , Estimulação Elétrica , Metionina/metabolismo , Dados de Sequência Molecular , Pleura/inervação , Homologia de Sequência de Aminoácidos , Radioisótopos de Enxofre , Fatores de Tempo
16.
Brain Res ; 750(1-2): 87-94, 1997 Mar 07.
Artigo em Inglês | MEDLINE | ID: mdl-9098533

RESUMO

Protein phosphorylation appears to play important roles in the mechanisms responsible for presynaptic facilitation in Aplysia. To screen for phosphoproteins that may be involved in facilitation, we previously examined protein phosphorylation in pleural sensory neurons as a function of different durations (2 min, 25 min and 1.5 h) of serotonin treatments. Different durations of serotonin had unique effects on the phosphorylation of different sets of proteins. To determine the functions of these phosphoproteins, we have begun to obtain their amino acid sequences using protein microsequencing techniques. We report here partial sequencing of 2 such proteins. One protein (S6), whose phosphorylation was affected by 2 min treatments with serotonin, appeared to be an intermediate filament protein. Another protein (L55), whose phosphorylation was affected by 1.5-h treatments with serotonin, appeared to be a calmodulin-like Ca(2+)-binding protein. Although the exact cellular functions for S6 and L55 are not known, obtaining partial sequences of these proteins sets the stage for future studies that will examine their regulation and their specific roles in facilitation.


Assuntos
Gânglios dos Invertebrados/fisiologia , Proteínas do Tecido Nervoso/metabolismo , Neurônios Aferentes/fisiologia , Fosfoproteínas/metabolismo , Serotonina/farmacologia , Sequência de Aminoácidos , Animais , Aplysia , Calmodulina/química , Calmodulina/metabolismo , Técnicas In Vitro , Proteínas de Filamentos Intermediários/química , Proteínas de Filamentos Intermediários/metabolismo , Cinética , Dados de Sequência Molecular , Neurônios Aferentes/efeitos dos fármacos , Fragmentos de Peptídeos/química , Fragmentos de Peptídeos/isolamento & purificação , Fosfoproteínas/química , Fosforilação , Homologia de Sequência de Aminoácidos , Fatores de Tempo
17.
Forensic Sci Int ; 143(1): 61-3, 2004 Jun 30.
Artigo em Inglês | MEDLINE | ID: mdl-15177631

RESUMO

A genetic study of 15 autosomal STRs is carried out (D2S1338, D3S1358, D5S818, D7S820, D8S1 79, D13S317, D16S359, D18S51, D19S433, D21S11, CSF1PO, FGA, TPOX, THO1, VWA) in a sample of unrelated Tutsis. The molecular phenotypes were determined by means of multiplex strategies (AmpFlSTR Identifiler PCR Amplification Kit, Applied Biosystems) followed by capillary electrophoresis.


Assuntos
Etnicidade/genética , Frequência do Gene , Genética Populacional , Reação em Cadeia da Polimerase , Sequências de Repetição em Tandem , Impressões Digitais de DNA/métodos , Eletroforese Capilar , Humanos , Ruanda
18.
Transplant Proc ; 35(5): 2014-6, 2003 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-12962881

RESUMO

BACKGROUND: Renal dysfunction is a common complication after orthotopic heart transplantation (HT). The importance of factors other than exposure to immunosuppressive drugs is unclear. The purpose of this study was to determine the incidence and natural history of renal dysfunction following heart transplantation, and to evaluate a number of variables as risk factors for this condition. METHODS: We examined the creatinine levels at 1, 6, 12, 24, and 60 months in 262 consecutive heart transplant patients who survived at least 1 year. The potential risk factors included pre- and posttransplantation diabetes mellitus, arterial hypertension, and drugs used to control arterial hypertension. RESULTS: 17.2% of patients showed mild renal dysfunction (creatinine 1.5-2.5 mg/dL) and 1.9% moderate dysfunction (creatinine >2.5 mg/dL) at 1 month; 29.8% showed mild and 1.1% moderate dysfunction at 6 months; 33.2% showed mild and 1.9% moderate dysfunction at 1 year; 40% showed mild, 0.9% moderate and 0.4% severe dysfunction (requiring dialysis or renal transplantation) at 2 years; and 43.6% showed mild, 1.7% moderate and 0.9% severe dysfunction at 5 years. None of the conditions analyzed as possible risk factors showed a significant association with renal dysfunction except the use of diuretics. CONCLUSION: The incidence of renal dysfunction after orthotopic heart transplantation was 33.6% within the first year after transplant and 44% within the first five years, although more than 95% of cases were mild. The incidence increased with time after transplantation. Renal dysfunction seems likely to be multifactorial in origin, but no individual risk factors were identified.


Assuntos
Transplante de Coração/fisiologia , Nefropatias/epidemiologia , Creatinina/sangue , Feminino , Seguimentos , Humanos , Imunossupressores/uso terapêutico , Incidência , Nefropatias/fisiopatologia , Masculino , Pessoa de Meia-Idade , Muromonab-CD3/uso terapêutico , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/fisiopatologia , Estudos Retrospectivos , Fatores de Risco , Fatores de Tempo
19.
Anim Reprod Sci ; 55(2): 115-26, 1999 Mar 19.
Artigo em Inglês | MEDLINE | ID: mdl-10333068

RESUMO

The goal of the present study was to determine whether ACTH and progesterone have any effect on LH secretion and pulse frequency in recently castrated rams. Six 2-year-old Corriedale rams were castrated in the winter. The day before castration, blood samples were taken in order to establish the precastration LH levels. The rams were divided into an untreated group (group U: n = 2) and a treated group (group T: n = 4). The first treatment consisted of the i.v. administration of 0.5 mg of ACTH on day 20 post-castration, immediately after the first sample had been taken. During the second treatment, subcutaneous progesterone implants were given to group T for 5 days. Control samplings were performed one week before each treatment. Prior to castration, the testosterone levels were low, while after castration they were below the detection limit of the assay. Cortisol and progesterone concentrations were basal before castration in all of the animals and after castration in group U and also in the control samplings for group T. ACTH treatment caused a significant increase in both cortisol and progesterone levels for 3 h (P < 0.001). Progesterone implants raised progesterone levels in group T, but cortisol levels remained basal. Before castration, all animals had low LH levels and hardly any pulse activity was seen. After castration, both the number of LH pulses and the mean LH production increased significantly in all of the animals (P < 0.01). During the ACTH trial, LH pulse frequency was significantly reduced for the first 4 h following ACTH administration (P = 0.013), however, no such differences occurred in the prior control period. No effect was seen on mean LH concentration during the ACTH treatment. Progesterone treatment did not have any effect on either the number of LH pulses nor on LH concentrations (P > 0.05).


Assuntos
Hormônio Adrenocorticotrópico/farmacologia , Hormônio Luteinizante/metabolismo , Orquiectomia/veterinária , Progesterona/farmacologia , Ovinos/fisiologia , Animais , Anti-Inflamatórios/sangue , Anticorpos Monoclonais , Hidrocortisona/sangue , Hormônio Luteinizante/sangue , Masculino , Progesterona/sangue , Radioimunoensaio/veterinária , Testosterona/sangue , Uruguai
20.
Acta Cytol ; 45(3): 415-9, 2001.
Artigo em Inglês | MEDLINE | ID: mdl-11393077

RESUMO

BACKGROUND: Solitary cysts occur in approximately 10% of patients with autosomal dominant polycystic kidney disease (ADPKD), and fine needle aspiration cytology (FNAC) can be beneficial in evaluating complications related to the cysts and in excluding malignancies and other cystic lesions that can occur in these patients. CASE: FNAC was performed on a benign epithelial cyst in a symptomatic, 25-year-old, white female with ADPKD. The aspirate consisted of scattered small, flat groups of uniform epithelial cells arranged in a honey-comb fashion. CONCLUSION: To the best of our knowledge, this is the first FNAC report of a pancreatic cyst in ADPKD.


Assuntos
Biópsia por Agulha , Cisto Pancreático/patologia , Rim Policístico Autossômico Dominante/complicações , Adulto , Diagnóstico Diferencial , Feminino , Humanos , Cisto Pancreático/complicações
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