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1.
J Med Case Rep ; 17(1): 186, 2023 Apr 26.
Artigo em Inglês | MEDLINE | ID: mdl-37101309

RESUMO

BACKGROUND: Chromosome 5p partial monosomy (5p-syndrome) and chromosome 6p partial trisomy are chromosomal abnormalities that result in a variety of symptoms, but liver dysfunction is not normally one of them. Alagille syndrome (OMIM #118450) is a multisystem disorder that is defined clinically by hepatic bile duct paucity and cholestasis, in association with cardiac, skeletal, and ophthalmologic manifestations, and characteristic facial features. Alagille syndrome is caused by mutations in JAG1 on chromosome 20 or NOTCH2 on chromosome 1. Here, we report a preterm infant with karyotype 46,XX,der(5)t(5,6)(p15.2;p22.3) and hepatic dysfunction, who was diagnosed as having incomplete Alagille syndrome. CASE PRESENTATION: The Japanese infant was diagnosed based on the cardiac abnormalities, ocular abnormalities, characteristic facial features, and liver pathological findings. Analysis of the JAG1 and NOTCH sequences failed to detect any mutations in these genes. CONCLUSIONS: These results suggest that, besides the genes that are known to be responsible for Alagille syndrome, other genetic mutations also may cause Alagille syndrome.


Assuntos
Síndrome de Alagille , Lactente , Humanos , Recém-Nascido , Síndrome de Alagille/diagnóstico , Síndrome de Alagille/genética , Síndrome de Alagille/patologia , Proteína Jagged-1/genética , Proteína Jagged-1/metabolismo , Recém-Nascido Prematuro , Cariótipo
2.
Clin. transl. oncol. (Print) ; 23(12): 2474-2481, dec. 2021.
Artigo em Inglês | IBECS | ID: ibc-224104

RESUMO

Purpose The objectives of this study were to clarify whether resection of primary tumor in the extremities for patients with metastatic soft-tissue sarcoma (STS) improves survival, and to clarify patient groups for whom primary tumor resection should be considered. Methods/patients Using the surveillance, epidemiology, and end results database, we identified 1453 patients with metastatic STS of the extremities at initial presentation between 1983 and 2016. Of these 1453 patients, 898 patients underwent primary tumor resection (Surgery group), and 555 patients did not (No-surgery group). Results After adjusting for patient background by propensity score matching, a total of 804 patients were included for analysis. Patients in the Surgery group showed improved survival (cancer-specific survival (CSS) hazard ratio (HR) = 0.59, 95% confidence interval (CI) 0.50–0.71 overall survival rate (OS) HR = 0.60, 95% CI 0.51–0.70). In subclass analysis, patients with high-grade STS, undifferentiated pleomorphic sarcoma, leiomyosarcoma, or synovial sarcoma showed improved survival in the Surgery group (high grade—CSS HR = 0.57, 95% CI 0.45–0.72, OS HR = 0.58, 95% CI 0.48–0.71; undifferentiated pleomorphic sarcoma—CSS HR = 0.60, 95% CI 0.42–0.84, OS HR = 0.61, 95% CI 0.46–0.82; leiomyosarcoma—CSS HR = 0.50, 95% CI 0.33–0.75, OS HR = 0.50, 95% CI 0.35–0.72; synovial sarcoma—CSS HR = 0.46, 95% CI 0.31–0.68, OS HR = 0.43, 95% CI 0.30–0.62). Conclusions Our results indicated that primary tumor resection in metastatic STS exerts positive impacts on survival. Further clinical research is needed to confirm these results (AU)


Assuntos
Humanos , Masculino , Pessoa de Meia-Idade , Extremidades/cirurgia , Programa de SEER , Sarcoma/mortalidade , Análise de Sobrevida , Estados Unidos/epidemiologia , Seguimentos , Sarcoma/secundário , Sarcoma/cirurgia , Prognóstico
3.
Clin Transl Oncol ; 23(12): 2474-2481, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34060011

RESUMO

PURPOSE: The objectives of this study were to clarify whether resection of primary tumor in the extremities for patients with metastatic soft-tissue sarcoma (STS) improves survival, and to clarify patient groups for whom primary tumor resection should be considered. METHODS/PATIENTS: Using the surveillance, epidemiology, and end results database, we identified 1453 patients with metastatic STS of the extremities at initial presentation between 1983 and 2016. Of these 1453 patients, 898 patients underwent primary tumor resection (Surgery group), and 555 patients did not (No-surgery group). RESULTS: After adjusting for patient background by propensity score matching, a total of 804 patients were included for analysis. Patients in the Surgery group showed improved survival (cancer-specific survival (CSS) hazard ratio (HR) = 0.59, 95% confidence interval (CI) 0.50-0.71 overall survival rate (OS) HR = 0.60, 95% CI 0.51-0.70). In subclass analysis, patients with high-grade STS, undifferentiated pleomorphic sarcoma, leiomyosarcoma, or synovial sarcoma showed improved survival in the Surgery group (high grade-CSS HR = 0.57, 95% CI 0.45-0.72, OS HR = 0.58, 95% CI 0.48-0.71; undifferentiated pleomorphic sarcoma-CSS HR = 0.60, 95% CI 0.42-0.84, OS HR = 0.61, 95% CI 0.46-0.82; leiomyosarcoma-CSS HR = 0.50, 95% CI 0.33-0.75, OS HR = 0.50, 95% CI 0.35-0.72; synovial sarcoma-CSS HR = 0.46, 95% CI 0.31-0.68, OS HR = 0.43, 95% CI 0.30-0.62). CONCLUSIONS: Our results indicated that primary tumor resection in metastatic STS exerts positive impacts on survival. Further clinical research is needed to confirm these results.


Assuntos
Extremidades/cirurgia , Programa de SEER/estatística & dados numéricos , Sarcoma/mortalidade , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos , Sarcoma/secundário , Sarcoma/cirurgia , Taxa de Sobrevida , Estados Unidos/epidemiologia
4.
Curr Oncol ; 27(5): 257-262, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-33173377

RESUMO

Background: The prognostic nutritional index (pni) is a simple metric calculated using serum albumin and the peripheral lymphocyte count. It was reported that a low pni score is significantly associated with major postoperative complications and poor prognosis. The purpose of the present study was to investigate the effects of perioperative oral management (pom) on the perioperative pni profiles of patients with digestive system or urinary cancers. Study Design: The medical records of 181 patients with cancer who underwent surgery and for whom a pni could be calculated were retrospectively reviewed. Results: The intervention rate with pom was 34.8%. The median preoperative pni score was 48.25 in all patients with a pom intervention [25% to 75% interquartile range (iqr): 44.38-54.13] and 47.25 in those without an intervention (iqr: 42.0-53.5). Compared with patients not receiving pom, those who received pom had significantly higher pni scores from the early postoperative period (p < 0.05). Notably, of patients who could resume oral intake within 3 days after surgery, those who received pom intervention, compared with those who did not, had significantly higher pni scores from the early postoperative period (p < 0.05). Conclusions: Perioperative oral management interventions might have positive effects on the postoperative pni scores of patients with cancer.


Assuntos
Avaliação Nutricional , Neoplasias Urológicas , Feminino , Humanos , Masculino , Estado Nutricional , Prognóstico , Estudos Retrospectivos
5.
J Dent Res ; 99(3): 271-276, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31977282

RESUMO

Chronic nonbacterial osteomyelitis is a rare bone disorder that can be found in the jaw. It is often associated with systemic conditions, including autoimmune deficiencies. However, little is known about how the genetic and immunologic background of patients influences the disease. Here, we focus on human leukocyte antigen (HLA), killer cell immunoglobulin-like receptors (KIRs), and their specific combinations that have been difficult to analyze owing to their high diversity. We employed a recently developed technology of simultaneous typing of HLA alleles and KIR haplotype and investigated alleles of the 35 HLA loci and KIR haplotypes composed of centromeric and telomeric motifs in 18 cases and 18 controls for discovery and 472 independent controls for validation. We identified an amino acid substitution of threonine at position 94 of HLA-C in combination with the telomeric KIR genotype of haplotype tA01/tB01 that had significantly higher frequency (>20%) in the case population than in both control populations. Multiple logistic regression analysis based on a dominant model with adjustments for age and sex revealed and validated its statistical significance and high predictive accuracy (C-statistic ≥0.85). Structure-based analysis revealed that the combination of the amino acid change in HLA-C and the telomeric genotype tA01/tB01 could be associated with lower stability of HLA-C. This is the first case-control study of a rare disease that employed the latest sequencing technology enabling simultaneous typing and investigated amino acid polymorphisms at HLA loci in combination with KIR haplotype.


Assuntos
Osteomielite , Estudos de Casos e Controles , Frequência do Gene , Estudos de Associação Genética , Genótipo , Haplótipos/genética , Humanos , Osteomielite/genética , Receptores KIR/genética
6.
Osteoporos Int ; 30(1): 231-239, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30406309

RESUMO

Root amputation, immunosuppressive therapy, mandibular tooth extraction, pre-existing inflammation, and longer duration of treatment with bone-modifying agents were significantly associated with an increased risk of medication-related osteonecrosis of the jaw. Hopeless teeth should be extracted without drug holiday before the development of inflammation in cancer patients receiving high-dose bone-modifying agents. INTRODUCTION: No studies have comprehensively analyzed the influence of pre-existing inflammation, surgical procedure-related factors such as primary wound closure, demographic factors, and drug holiday on the incidence of medication-related osteonecrosis of the jaw (MRONJ). The purpose of this study was to retrospectively investigate the relationships between these various factors and the development of MRONJ after tooth extraction in cancer patients receiving high-dose bone-modifying agents (BMAs) such as bisphosphonates or denosumab. METHODS: Risk factors for MRONJ after tooth extraction were evaluated with univariate and multivariate analyses. The following parameters were investigated in all patients: demographics, type and duration of BMA use, whether BMA use was discontinued before tooth extraction (drug holiday), the duration of such discontinuation, the presence of pre-existing inflammation, and whether additional surgical procedures (e.g., incision, removal of bone edges, root amputation) were performed. RESULTS: We found that root amputation (OR = 22.62), immunosuppressive therapy (OR = 16.61), extraction of mandibular teeth (OR = 12.14), extraction of teeth with pre-existing inflammation, and longer duration (≥ 8 months) of high-dose BMA (OR = 7.85) were all significantly associated with MRONJ. CONCLUSIONS: Tooth extraction should not necessarily be postponed in cancer patients receiving high-dose BMA. The effectiveness of a short-term drug holiday was not confirmed, as drug holidays had no significant impact on MRONJ incidence. Tooth extraction may be acceptable during high-dose BMA therapy until 8 months after initiation.


Assuntos
Osteonecrose da Arcada Osseodentária Associada a Difosfonatos/etiologia , Neoplasias/tratamento farmacológico , Extração Dentária/efeitos adversos , Adulto , Idoso , Idoso de 80 Anos ou mais , Conservadores da Densidade Óssea/efeitos adversos , Denosumab/efeitos adversos , Difosfonatos/efeitos adversos , Feminino , Humanos , Imunossupressores/efeitos adversos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco , Raiz Dentária/cirurgia
7.
J Dent Res ; 96(13): 1526-1534, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28644737

RESUMO

Achondroplasia is the most common genetic form of human dwarfism, characterized by midfacial hypoplasia resulting in occlusal abnormality and foramen magnum stenosis, leading to serious neurologic complications and hydrocephalus. Currently, surgery is the only way to manage jaw deformity, neurologic complications, and hydrocephalus in patients with achondroplasia. We previously showed that C-type natriuretic peptide (CNP) is a potent stimulator of endochondral bone growth of long bones and vertebrae and is also a potent stimulator in the craniofacial region, which is crucial for midfacial skeletogenesis. In this study, we analyzed craniofacial morphology in a mouse model of achondroplasia, in which fibroblast growth factor receptor 3 (FGFR3) is specifically activated in cartilage ( Fgfr3ach mice), and investigated the mechanisms of jaw deformities caused by this mutation. Furthermore, we analyzed the effect of CNP on the maxillofacial area in these animals. Fgfr3ach mice exhibited midfacial hypoplasia, especially in the sagittal direction, caused by impaired endochondral ossification in craniofacial cartilage and by premature closure of the spheno-occipital synchondrosis, an important growth center in craniomaxillofacial skeletogenesis. We crossed Fgfr3ach mice with transgenic mice in which CNP is expressed in the liver under the control of the human serum amyloid-P component promoter, resulting in elevated levels of circulatory CNP ( Fgfr3ach/SAP-Nppc-Tg mice). In the progeny, midfacial hypoplasia in the sagittal direction observed in Fgfr3ach mice was improved significantly by restoring the thickness of synchondrosis and promoting proliferation of chondrocytes in the craniofacial cartilage. In addition, the foramen magnum stenosis observed in Fgfr3ach mice was significantly ameliorated in Fgfr3ach/SAP-Nppc-Tg mice due to enhanced endochondral bone growth of the anterior intraoccipital synchondrosis. These results clearly demonstrate the therapeutic potential of CNP for treatment of midfacial hypoplasia and foramen magnum stenosis in achondroplasia.


Assuntos
Acondroplasia/tratamento farmacológico , Anormalidades Maxilomandibulares/tratamento farmacológico , Peptídeo Natriurético Tipo C/sangue , Peptídeo Natriurético Tipo C/farmacologia , Acondroplasia/diagnóstico por imagem , Acondroplasia/patologia , Animais , Marcação In Situ das Extremidades Cortadas , Anormalidades Maxilomandibulares/diagnóstico por imagem , Anormalidades Maxilomandibulares/patologia , Camundongos , Osteogênese/efeitos dos fármacos , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Microtomografia por Raio-X
8.
Eur J Gynaecol Oncol ; 37(4): 568-571, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-29894087

RESUMO

Benign metastasizing leiomyoma (BML) is a rare condition that affects other organs out of the uterus. Recently, a few case reports in which 18F-fluorodeoxyglucose positron emission tomography (FDG-PET) has been used to distinguish the malignancy have been published. Here, the authors present a case of BML with metabolic activity on PET, in which needle biopsy of the uterus was efficient to make diagnosis.


Assuntos
Fluordesoxiglucose F18/metabolismo , Leiomioma/patologia , Neoplasias Pulmonares/secundário , Neoplasias Uterinas/secundário , Biópsia , Feminino , Humanos , Leiomioma/metabolismo , Neoplasias Pulmonares/metabolismo , Pessoa de Meia-Idade , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Neoplasias Uterinas/metabolismo
9.
Blood Cancer J ; 4: e252, 2014 Oct 17.
Artigo em Inglês | MEDLINE | ID: mdl-25325302

RESUMO

The superiority of the pediatric protocol for adolescents with acute lymphoblastic leukemia (ALL) has already been demonstrated, however, its efficacy in young adults remains unclear. The ALL202-U protocol was conducted to examine the efficacy and feasibility of a pediatric protocol in adolescents and young adults (AYAs) with BCR-ABL-negative ALL. Patients aged 15-24 years (n=139) were treated with the same protocol used for pediatric B-ALL. The primary objective of this study was to assess the disease-free survival (DFS) rate and its secondary aims were to assess toxicity, the complete remission (CR) rate and the overall survival (OS) rate. The CR rate was 94%. The 5-year DFS and OS rates were 67% (95% confidence interval (CI) 58-75%) and 73% (95% CI 64-80%), respectively. Severe adverse events were observed at a frequency that was similar to or lower than that in children treated with the same protocol. Only insufficient maintenance therapy significantly worsened the DFS (hazard ratio 5.60, P<0.001). These results indicate that this protocol may be a feasible and highly effective treatment for AYA with BCR-ABL-negative ALL.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamento farmacológico , Leucemia-Linfoma Linfoblástico de Células Precursoras/mortalidade , Adolescente , Adulto , Fatores Etários , Protocolos de Quimioterapia Combinada Antineoplásica/antagonistas & inibidores , Intervalo Livre de Doença , Feminino , Humanos , Japão , Masculino , Estudos Prospectivos , Indução de Remissão , Taxa de Sobrevida , Adulto Jovem
10.
Oncogene ; 33(10): 1274-86, 2014 Mar 06.
Artigo em Inglês | MEDLINE | ID: mdl-23503462

RESUMO

Coxsackie and adenovirus receptor (CAR) is essential for adenovirus infection to target cells, and its constitutive expression in various cancerous and normal tissues has been reported. Recently, the biological role of CAR in human cancers of several different origins has been investigated with respect to tumor progression, metastasis and tumorigenesis. However, its biological function in tumor cells remains controversial. Here we report the critical role of CAR in growth regulation of oral squamous cell carcinomas (SCCs) in vitro and in vivo via the specific interaction with Rho-associated protein kinase (ROCK). Loss of endogenous CAR expression by knockdown using specific small interfering RNA (siRNA) against CAR facilitates growth suppression of SCC cells due to cell dissociation, followed by apoptosis. The consequent morphological reaction was reminiscent of anoikis, rather than epithelial-mesenchymal transition, and the dissociation of oral SCC cells was triggered not by lack of contact with extracellular matrix, but by loss of cell-to-cell contact caused by abnormal translocation of E-cadherin from surface membrane to cytoplasm. Immunoprecipitation assays of the CAR-transfected oral SCC cell line, HSC-2, with or without ROCK inhibitor (Y-27632) revealed that CAR directly associates with ROCKI and ROCKII, which results in inhibition of ROCK activity and contributes to maintenance of cell-to-cell adhesion for their growth and survival. Based on these findings, in vivo behavior of CAR-downregulated HSC-2 cells from siRNA knockdown was compared with that of normally CAR-expressing cells in intraperitoneally xenografted mouse models. The mice engrafted with CAR siRNA-pretreated HSC-2 cells showed poor formation of metastatic foci in contrast to those implanted with the control siRNA-pretreated cells. Thus, CAR substantially has an impact on growth and survival of oral SCC cells as a negative regulator of ROCK in vitro and in vivo.


Assuntos
Carcinoma de Células Escamosas/metabolismo , Proliferação de Células , Sobrevivência Celular , Proteína de Membrana Semelhante a Receptor de Coxsackie e Adenovirus/fisiologia , Neoplasias Bucais/metabolismo , Neoplasias Peritoneais/metabolismo , Animais , Antígenos CD , Apoptose , Caderinas/metabolismo , Carcinoma de Células Escamosas/secundário , Linhagem Celular Tumoral , Feminino , Expressão Gênica , Técnicas de Silenciamento de Genes , Células HEK293 , Humanos , Camundongos , Camundongos Endogâmicos NOD , Camundongos SCID , Neoplasias Bucais/patologia , Transplante de Neoplasias , Neoplasias Peritoneais/secundário , Ligação Proteica , Transporte Proteico , RNA Interferente Pequeno/genética , Quinases Associadas a rho/metabolismo
11.
J Dent Res ; 92(1): 58-64, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23114031

RESUMO

C-type natriuretic peptide (CNP) is a potent stimulator of long bone and vertebral development via endochondral ossification. In the present study, we investigated the effects of CNP on craniofacial skeletogenesis, which consists of both endochondral and membranous ossification. Morphometric analyses of crania from CNP knockout and transgenic mice revealed that CNP stimulates longitudinal growth along the cranial length, but does not regulate cranial width. CNP markedly increased the length of spheno-occipital synchondrosis in fetal murine organ cultures, and the thickness of cultured murine chondrocytes from the spheno-occipital synchondrosis or nasal septum, resulting in the stimulation of longitudinal cranial growth. Mandibular growth includes endochondral and membranous ossification; although CNP stimulated endochondral bone growth of condylar cartilage in cultured fetal murine mandibles, differences in the lengths of the lower jaw between CNP knockout or transgenic mice and wild-type mice were smaller than those observed for the lengths of the upper jaw. These results indicate that CNP primarily stimulates endochondral ossification in the craniofacial region and is crucial for midfacial skeletogenesis.


Assuntos
Ossos Faciais/efeitos dos fármacos , Peptídeo Natriurético Tipo C/farmacologia , Osteogênese/efeitos dos fármacos , Crânio/efeitos dos fármacos , Agrecanas/análise , Animais , Cartilagem Articular/efeitos dos fármacos , Técnicas de Cultura de Células , Proliferação de Células/efeitos dos fármacos , Cefalometria/métodos , Condrócitos/efeitos dos fármacos , Colágeno Tipo II/genética , Colágeno Tipo X/análise , Suturas Cranianas/efeitos dos fármacos , Relação Dose-Resposta a Droga , Imageamento Tridimensional/métodos , Mandíbula/efeitos dos fármacos , Côndilo Mandibular/efeitos dos fármacos , Maxila/efeitos dos fármacos , Camundongos , Camundongos Knockout , Camundongos Transgênicos , Cartilagens Nasais/efeitos dos fármacos , Osso Occipital/efeitos dos fármacos , Técnicas de Cultura de Órgãos , Antígeno Nuclear de Célula em Proliferação/análise , Base do Crânio/efeitos dos fármacos , Osso Esfenoide/efeitos dos fármacos , Microtomografia por Raio-X/métodos
12.
Br J Cancer ; 106(6): 1196-204, 2012 Mar 13.
Artigo em Inglês | MEDLINE | ID: mdl-22315058

RESUMO

BACKGROUND: Epithelial mesenchymal transition (EMT) is known to be associated with chemoresistance as well as increased invasion/metastasis. However, the relationship between EMT and resistance to an epidermal growth factor receptor (EGFR) -targeting drug in head and neck squamous cell carcinoma (HNSCC) remains unknown. In this study, we investigated the acquisition of EMT by gefitinib in HNSCC cell line (UMSCC81B). METHODS: We isolated fibroblastoid variant (81B-Fb) from gefitinib-resistant UMSCC81B-GR3 cells obtained after increasing the doses of gefitinib treatment in vitro and examined EMT and its underlying mechanism. RESULT: 81B-Fb cells exhibited fibroblast-like morphology, increased motility, loss of E-cadherin, acquisition of vimentin and snail expression. In 81B-Fb cells, downregulation of EGFR, which is mediated by increased ubiquitination, and activation of downstream protein kinase B (Akt), glycogen synthase kinase-beta (GSK-3ß) signalling and upregulation of snail expression were observed compared with UMSCC81B cells. LY294002, but not U0126, suppressed foetal bovine serum or heregulin-ß1-induced phosphorylation of Akt/GSK-3ß and snail expression together with the inhibition of 81B-Fb cell motility. Furthermore, forced expression of EGFR resulted in partial restoration of gefitinib sensitivity and reversal of EMT. CONCLUSION: These results suggest that EMT in the gefitinib-resistant cells is mediated by the downregulation of EGFR and compensatory activation of Akt/GSK-3ß/snail pathway.


Assuntos
Antineoplásicos/farmacologia , Carcinoma/patologia , Resistencia a Medicamentos Antineoplásicos , Transição Epitelial-Mesenquimal , Neoplasias de Cabeça e Pescoço/patologia , Quinazolinas/farmacologia , Transdução de Sinais , Animais , Carcinoma/metabolismo , Linhagem Celular Tumoral/efeitos dos fármacos , Movimento Celular , Proliferação de Células , Regulação para Baixo , Receptores ErbB/genética , Receptores ErbB/metabolismo , Gefitinibe , Quinase 3 da Glicogênio Sintase/metabolismo , Glicogênio Sintase Quinase 3 beta , Neoplasias de Cabeça e Pescoço/metabolismo , Humanos , Masculino , Camundongos , Camundongos Nus , Transplante de Neoplasias , Fenótipo , Fosforilação , Transporte Proteico , Proteínas Proto-Oncogênicas c-akt/metabolismo , Fatores de Transcrição da Família Snail , Fatores de Transcrição/metabolismo
13.
Osteoporos Int ; 22(6): 1955-65, 2011 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-20838768

RESUMO

UNLABELLED: This study investigated the role of macrophage migration inhibitory factor (MIF) in fracture repair using MIF gene-deficient mice (MIF KO). Fracture healing was delayed in MIF KO, and this was mainly due to the delay in the mineralization of osteoid within the fracture callus. INTRODUCTION: We previously reported that the expression of macrophage migration inhibitory factor (MIF) was up-regulated during the fracture healing process in rats. However, its role in the pathophysiology of this process remained unclear. The aim of the present study was to clarify the role of MIF in the fracture healing process using MIF gene-deficient mice (MIF KO). METHODS: Bone repair in wild-type mice (WT) and MIF KO (n = 70, respectively) was investigated using a tibia fracture model. Radiographic, biomechanical, histological, bone histomorphometric, and molecular analyses were performed. RESULTS: Post-fracture biomechanical testing showed that maximum load and stiffness were significantly lower in MIF KO than in WT on day 42. However, similar levels were observed between the two groups on day 84. Bone histomorphometric analysis revealed significantly higher osteoid volume, a lower mineral apposition rate, and smaller numbers of osteoclasts in the MIF KO callus compared to the WT callus. The messenger ribonucleic acid expressions of matrix metalloproteinase (MMP)-2, membranous type 1-MMP, cathepsin K, and tissue nonspecific alkaline phosphatase were found to be significantly suppressed in the MIF KO callus. CONCLUSION: The results of the present study suggest that delayed fracture healing in MIF KO was mainly attributable to a delay in osteoid mineralization.


Assuntos
Consolidação da Fratura/fisiologia , Oxirredutases Intramoleculares/fisiologia , Fatores Inibidores da Migração de Macrófagos/fisiologia , Fraturas da Tíbia/fisiopatologia , Fosfatase Alcalina/biossíntese , Fosfatase Alcalina/genética , Animais , Remodelação Óssea/fisiologia , Calo Ósseo/patologia , Calo Ósseo/fisiopatologia , Calcificação Fisiológica/fisiologia , Catepsina K/biossíntese , Catepsina K/genética , Fixação Intramedular de Fraturas/métodos , Regulação da Expressão Gênica , Oxirredutases Intramoleculares/deficiência , Fatores Inibidores da Migração de Macrófagos/deficiência , Masculino , Metaloproteinase 1 da Matriz/biossíntese , Metaloproteinase 1 da Matriz/genética , Metaloproteinase 2 da Matriz/biossíntese , Metaloproteinase 2 da Matriz/genética , Camundongos , Camundongos Endogâmicos BALB C , Camundongos Knockout , RNA Mensageiro/genética , Radiografia , Reação em Cadeia da Polimerase em Tempo Real/métodos , Estresse Mecânico , Fraturas da Tíbia/diagnóstico por imagem , Fraturas da Tíbia/patologia , Fraturas da Tíbia/cirurgia
16.
Clin Exp Immunol ; 155(2): 249-56, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19040609

RESUMO

Cellular adjuvants such as dendritic cells (DC) are in the focus of tumour immunotherapy. In DC-vaccine trials, induction of tumour antigen-specific immunity is observed frequently and well-documented clinical responses have been reported. However, the overall response rate is less than 3%, therefore alternative strategies are being investigated. CD40-activated B cells (CD40-B) have been characterized previously as an interesting alternative because they present antigen efficiently and can be expanded by several logs from small amounts of peripheral blood. To determine the central technical challenges of cell-based vaccines we performed a single-patient analysis of 502 patients from DC-based tumour vaccine trials and identified at least three factors contributing to their limited efficiency: (1) lack of cell numbers; (2) lack of documented purity thus high contamination of bystander cells; and (3) lack of quality control and thus heterogeneous or unknown expression of important surface molecules such as major histocompatibility complex (MHC) and chemokine receptors. Based on these findings we re-evaluated the CD40-B approach in cancer patients. Here, we show that proliferation of B cells from cancer patients is equivalent to that observed in healthy donors. Purity is always > 90% after 2 weeks and remains stable for several weeks. They have comparable antigen-presenting capability determined phenotypically and by allogeneic mixed lymphocyte reaction. Expression of CCR7 and CD62L was detected in all samples and B cells migrated towards the relevant homing chemokines. Taken together, CD40-B cells from cancer patients can be expanded in virtually unlimited numbers at high purity and full function concerning antigen-presentation and migratory properties.


Assuntos
Linfócitos B/imunologia , Antígenos CD40/imunologia , Neoplasias/imunologia , Apresentação de Antígeno/imunologia , Linfócitos T CD4-Positivos/imunologia , Vacinas Anticâncer/uso terapêutico , Carcinoma de Células Renais/terapia , Quimiotaxia de Leucócito/imunologia , Neoplasias do Colo/imunologia , Células Dendríticas/transplante , Humanos , Imunofenotipagem , Neoplasias Renais/terapia , Ativação Linfocitária/imunologia , Teste de Cultura Mista de Linfócitos , Masculino , Neoplasias da Próstata/terapia
17.
J Bone Joint Surg Br ; 90(10): 1392-400, 2008 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-18827254

RESUMO

We report the effects of local administration of osteogenic protein-1 on the biomechanical properties of the overstretched anterior cruciate ligament in an animal model. An injury in the anterior cruciate ligament was created in 45 rabbits. They were divided into three equal groups. In group 1, no treatment was applied, in group II, phosphate-buffered saline was applied around the injured ligament, and in group III, 12.5 microg of osteogenic protein-1 mixed with phosphate-buffered saline was applied around the injured ligament. A control group of 15 rabbits was assembled from randomly-selected injured knees from among the first three groups. Each rabbit was killed at 12 weeks. The maximum load and stiffness of the anterior cruciate ligament was found to be significantly greater in group III than either group 1 (p = 0.002, p = 0.014) or group II (p = 0.032, p = 0.025). The tensile strength and the tangent modulus of fascicles from the ligament were also significantly greater in group III than either group I (p = 0.002, p = 0.0174) or II (p = 0.005, p = 0.022). The application of osteogenic protein-1 enhanced the healing in the injured anterior cruciate ligament, but compared with the control group the treated ligament remained lengthened. The administration of osteogenic protein-1 may have a therapeutic role in treating the overstretched anterior cruciate ligament.


Assuntos
Lesões do Ligamento Cruzado Anterior , Proteínas Morfogenéticas Ósseas/administração & dosagem , Lacerações/tratamento farmacológico , Fator de Crescimento Transformador beta/administração & dosagem , Cicatrização/efeitos dos fármacos , Animais , Ligamento Cruzado Anterior/efeitos dos fármacos , Fenômenos Biomecânicos , Proteína Morfogenética Óssea 7 , Feminino , Coelhos , Estresse Mecânico , Resistência à Tração/efeitos dos fármacos , Resistência à Tração/fisiologia
18.
Cytopathology ; 19(1): 28-33, 2008 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-17944955

RESUMO

OBJECTIVE: Office methods of endometrial sampling for outpatients with abnormal uterine bleeding should be minimally invasive. The purpose of this study was to determine the best method for detecting endometrial cancer in an outpatients setting. METHODS: In all, 114 symptomatic women who were suspected of having endometrial disease by their local gynaecologist were enrolled in this study. After pelvic examination and transvaginal ultrasonography, endometrial cytology, suction endometrial curettage, and four-site endometrial biopsy were performed, in this order without anaesthesia in each patient. After endometrial sampling, the patient was asked to comment on the intensity of any pain experienced during each procedure. Then the final histological diagnosis made from the surgical materials was compared with the results of the three pre-operative methods. RESULTS: Among the 114 consecutive patients, 56 had endometrial carcinoma, three had carcinosarcoma, six had endometrial hyperplasia, and 49 had benign conditions. The sensitivity of detecting malignancy was 88% (52/59) with endometrial cytology, 92% (54/59) with suction curettage, and 88% (52/59) with four-site biopsy. When endometrial cytology was combined with suction curettage, the sensitivity of detecting malignancy was increased from 92% to 98%, whereas the sensitivity was increased from 88% to 97%, when endometrial cytology was added to four-site biopsy. Suction curettage was significantly less painful than four-site biopsy. CONCLUSION: Our data indicated that suction curettage plus endometrial cytology was the best combination for pathological examination of outpatients with abnormal uterine bleeding.


Assuntos
Técnicas Citológicas , Neoplasias do Endométrio/diagnóstico , Neoplasias do Endométrio/cirurgia , Pacientes Ambulatoriais , Curetagem a Vácuo , Feminino , Humanos , Sensibilidade e Especificidade , Curetagem a Vácuo/efeitos adversos
19.
J Clin Pathol ; 61(3): 377-81, 2008 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-17601964

RESUMO

BACKGROUND: Follicular lymphomas occasionally arise in the extra-nodal organs and are frequently found in the duodenum. They are often localised tumours with multiple polyps around the ampulla of Vater. AIMS: To examine a IgH/bcl-2 hybrid gene and VH gene to investigate the nature of the lymphoma cells and how they differ from nodal follicular lymphomas and MALT lymphomas. METHODS: Of 40 patients reported previously, 35 with duodenal follicular lymphoma were studied in detail with respect to clinicopathological characteristics. RESULTS: 37/40 patients were in clinical stage I (n = 30) or stage II (n = 7). Clonal immunoglobulin gene rearrangement was detected in 53.3% of examined cases, and rearrangement of IgH/bcl-2 gene at the major break point was detected in 27% of cases. Three of 8 examined cases were VH4 (38%); 2 out of them were VH4-34. As VH4 deviation is one of the common characteristics of MALT lymphomas and 2/3 were identical, duodenal follicular lymphomas have a similar aetiology to MALT lymphomas. Clinical course was also similar to that of MALT lymphomas. CONCLUSIONS: Results suggest that duodenal follicular lymphomas have intermediate characteristics of MALT lymphomas and nodal follicular lymphomas.


Assuntos
Neoplasias Duodenais/genética , Linfoma de Zona Marginal Tipo Células B/genética , Linfoma Folicular/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Southern Blotting , Cromossomos Humanos Par 14 , Cromossomos Humanos Par 18 , Neoplasias Duodenais/patologia , Feminino , Rearranjo Gênico , Genes de Imunoglobulinas , Genes bcl-2 , Humanos , Cadeias Pesadas de Imunoglobulinas/genética , Região Variável de Imunoglobulina/genética , Imunofenotipagem , Linfoma de Zona Marginal Tipo Células B/patologia , Linfoma Folicular/patologia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Análise de Sequência de DNA , Translocação Genética
20.
Int J Gynecol Cancer ; 18(1): 181-4, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-17466045

RESUMO

There are already 12 reports of women treated by chemotherapy for epithelial ovarian cancer during pregnancy. However, most cases received chemotherapy of single cisplatin or cisplatin-based regime, and only four cases received carboplatin-containing chemotherapy. We report the case of a woman treated with single-agent carboplatin during pregnancy. The patient underwent bilateral salpingo-oophorectomy at 18 weeks of gestation and was diagnosed as having stage IC undifferentiated ovarian carcinoma. She was treated with four courses of carboplatin (area under the curve = 6.0) chemotherapy during pregnancy without severe toxicity. At 33 weeks of gestation, cesarean section was performed, followed by total hysterectomy, omentectomy, and pelvic and para-aortic lymphadenectomy. No residual disease was histologically shown. The patient underwent additional chemotherapy with carboplatin and paclitaxel. After one year of follow-up, the baby shows normal growth and the patient has no evidence of disease. Postponing the termination of pregnancy by single-agent carboplatin chemotherapy during pregnancy might be considered as an option for therapy in selected women with ovarian malignancies.


Assuntos
Antineoplásicos/uso terapêutico , Carboplatina/uso terapêutico , Neoplasias Ovarianas/tratamento farmacológico , Complicações Neoplásicas na Gravidez/tratamento farmacológico , Adulto , Diferenciação Celular , Feminino , Humanos , Neoplasias Ovarianas/cirurgia , Gravidez , Complicações Neoplásicas na Gravidez/cirurgia , Resultado da Gravidez
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