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1.
Appetite ; 142: 104347, 2019 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-31278956

RESUMO

Few children in the United States meet national fruit and vegetable intake recommendations, highlighting a need for interventions. Children's food preferences act as a barrier to fruit and vegetable consumption, but prior research has demonstrated that repeated taste exposures can increase children's acceptance of these foods. Prior research in this area has typically utilized controlled procedures in which children sample small tastes of target foods over repeated occasions. The primary aim of the present pilot study was to test whether children's preferences for target fruits and vegetables increased following repeated taste exposures to them through hands-on cooking in a community setting. Seventeen 6-to-8-year-old children participated in biweekly study sessions during six weeks of a summer camp serving lower-income families. Liking of (yummy, just OK, yucky) and rank-ordered preferences for nine fruits and vegetables were measured before and after exposure sessions (pre-test and post-test). Based on pre-test assessments, four relatively less liked foods (two fruits, two vegetables) were chosen to become target foods. Children were then exposed to target foods during nine hands-on cooking sessions; liking of target foods was also measured at a midpoint assessment. At each exposure session, children assisted with preparation of a different snack using a recipe involving target foods and then ate the prepared snack together. Preferences for target foods increased from pre-test (Median = 5.8) to post-test (Median = 5.5; p < 0.05). On average, the majority of children rated the prepared snacks favorably. Results from this pilot study demonstrate the potential of applying repeated exposure techniques via hands-on cooking in a community setting.


Assuntos
Culinária/métodos , Preferências Alimentares/psicologia , Frutas , Educação em Saúde/métodos , Promoção da Saúde/métodos , Verduras , Criança , Feminino , Assistência Alimentar , Humanos , Masculino , New York , Projetos Piloto , Pobreza , Recomendações Nutricionais , Lanches
2.
Oncology ; 86(4): 239-43, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24902494

RESUMO

OBJECTIVE: To objectively assess anorectal dysfunction following nerve-sparing radical hysterectomy in stage I-II cervical carcinoma patients. MATERIAL AND METHODS: Between 2008 and 2012, 21 patients with primary cervical cancer stage FIGO I-II were enrolled in this prospective study. All women underwent nerve-sparing radical hysterectomy. Anorectal manometry was performed preoperatively and 6 months after surgery. A paired Student t test was used to assess the statistical difference between the manometric evaluations. A p value <0.05 was considered statistically significant. RESULTS: Twenty-one patients were available for follow-up. Maximal and mean anal resting and squeezing pressures were unaffected by the surgical procedure, rectoanal inhibitory reflex and length of the high anal pressure zone did not change after the operation. The minimal volume to elicit rectal sensation, urge to defecate and maximal tolerable volume did not change significantly in the postoperative period, although they decreased in 2 and increased in 3 patients. In addition, rectal compliance did not change after surgery. Furthermore, no significant differences were found between patients who were or were not treated with adjuvant radiotherapy. CONCLUSIONS: Our findings suggest that nerve-sparing radical hysterectomy for cervical cancer does not seem to be associated with long-term anorectal dysfunction. © 2014 S. Karger AG, Basel.


Assuntos
Canal Anal/patologia , Histerectomia/efeitos adversos , Reto/patologia , Neoplasias do Colo do Útero/cirurgia , Adulto , Idoso , Canal Anal/cirurgia , Feminino , Humanos , Pessoa de Meia-Idade , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/patologia , Complicações Pós-Operatórias/cirurgia , Período Pós-Operatório , Estudos Prospectivos , Reto/cirurgia
3.
Mol Psychiatry ; 18(2): 245-54, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22212595

RESUMO

The catecholamines dopamine (DA), norepinephrine (NE) and epinephrine (E) are neurotransmitters and hormones that mediate stress responses in tissues and plasma. The expression of ß-amyloid precursor protein (APP) is responsive to stress and is high in tissues rich in catecholamines. We recently reported that APP is a ferroxidase, subsuming, in neurons and other cells, the iron-export activity that ceruloplasmin mediates in glia. Here we report that, like ceruloplasmin, APP also oxidizes synthetic amines and catecholamines catalytically (K(m) NE=0.27 mM), through a site encompassing its ferroxidase motif and selectively inhibited by zinc. Accordingly, APP knockout mice have significantly higher levels of DA, NE and E in brain, plasma and select tissues. Consistent with this, these animals have increased resting heart rate and systolic blood pressure as well as suppressed prolactin and lymphocyte levels. These findings support a role for APP in extracellular catecholaminergic clearance.


Assuntos
Precursor de Proteína beta-Amiloide/metabolismo , Catecolaminas/metabolismo , Monoaminoxidase/metabolismo , Precursor de Proteína beta-Amiloide/deficiência , Animais , Pressão Sanguínea/efeitos dos fármacos , Pressão Sanguínea/genética , Sobrevivência Celular/efeitos dos fármacos , Sobrevivência Celular/genética , Células Cultivadas , Cromatografia Líquida de Alta Pressão , Dopamina/toxicidade , Embrião de Mamíferos , Fibroblastos/efeitos dos fármacos , Fibroblastos/metabolismo , Frequência Cardíaca/efeitos dos fármacos , Frequência Cardíaca/genética , Humanos , Linfócitos/efeitos dos fármacos , Linfócitos/metabolismo , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Oxirredução/efeitos dos fármacos
4.
G Chir ; 35(3-4): 101-6, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24841688

RESUMO

OBJECTIVE: The post-traumatic neuro-anastomosis must be protected from the surrounding environment. This barrier must be biologically inert, biodegradable, not compressing but protecting the nerve. Formation of painful neuroma is one of the major issues with neuroanastomosis; currently there is no consensus on post-repair neuroma prevention. Aim of this study is to evaluate the efficacy of neuroanastomosis performed with venous sheath to reduce painful neuromas formation, improve the electrical conductivity of the repaired nerve, and reduce the discrepancies of the sectioned nerve stumps. PATIENTS AND METHODS: From a trauma population of 320 patients treated in a single centre between January 2008 and December 2011, twenty-six patients were identified as having an injury to at least one of the peripheral nerves of the arm and enrolled in the study. Patients were divided into two groups. In the group A (16 patients) the end-to-end nerve suture was wrapped in a vein sheath and compared with the group B (10 patients) in which a simple end-to-end neurorrhaphy was performed. The venous segment used to cover the nerve micro-suture was harvested from the superficial veins of the forearm. The parameters analyzed were: functional recovery of motor nerves, sensitivity and pain. RESULTS. Average follow-up was 14 months (range: 12-24 months). The group A showed a more rapid motor and sensory recovery and a reduction of the painful symptoms compared to the control group (B). CONCLUSIONS: The Authors demonstrated that, in their experience, the venous sheath provides a valid solution to avoid the dispersion of the nerve fibres, to prevent adherent scars and painful neuromas formation. Moreover it can compensate the different size of two nerve stumps, allowing, thereby, a more rapid functional and sensitive recovery without expensive devices.


Assuntos
Microcirurgia/métodos , Regeneração Nervosa , Procedimentos Neurocirúrgicos/métodos , Traumatismos dos Nervos Periféricos/cirurgia , Veias/transplante , Adolescente , Adulto , Idoso , Estudos de Casos e Controles , Criança , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Neurilemoma/prevenção & controle , Traumatismos dos Nervos Periféricos/fisiopatologia , Recuperação de Função Fisiológica , Resultado do Tratamento
5.
Allergy ; 68(2): 246-8, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-23205566

RESUMO

Atopy patch tests (APTs) have been proposed for the diagnostic approach in children with non-IgE-mediated cow's milk allergy and gastrointestinal symptoms. We aimed to investigate the benefit of APTs in predicting oral tolerance in these patients. We prospectively evaluated 172 subjects with a sure diagnosis of non-IgE-mediated CMA and gastrointestinal symptoms (97 boys, 56.4%; age, 6.37 m; range, 2-12 m). At diagnosis, 113/172 (65.7%) children had positive APTs to cow's milk proteins (CMP). After 12 months of exclusion, diet APTs were repeated immediately before OFC. APTs significantly correlated (P < 0.001) with the OFC outcome (r 0.579). Diagnostic accuracy was sensitivity of 67.95%, specificity of 88.3%, PPV of 82.81%, NPV of 76.85%, and a +LR of 5.80. APTs are a valuable tool in the follow-up of children with non-IgE-mediated CMA-related gastrointestinal symptoms by contributing in determining whether an OFC can safely be undertaken.


Assuntos
Gastroenteropatias/etiologia , Tolerância Imunológica , Hipersensibilidade a Leite/diagnóstico , Leite/efeitos adversos , Testes do Emplastro/métodos , Fatores Etários , Animais , Bovinos , Criança , Pré-Escolar , Estudos de Coortes , Feminino , Gastroenteropatias/fisiopatologia , Humanos , Imunoglobulina E/imunologia , Imunoglobulina E/metabolismo , Lactente , Masculino , Hipersensibilidade a Leite/complicações , Hipersensibilidade a Leite/imunologia , Proteínas do Leite , Valor Preditivo dos Testes , Estudos Prospectivos , Medição de Risco , Sensibilidade e Especificidade , Índice de Gravidade de Doença , Fatores Sexuais
6.
Dis Aquat Organ ; 105(1): 45-55, 2013 Jul 09.
Artigo em Inglês | MEDLINE | ID: mdl-23836769

RESUMO

A new emerging disease in shrimp, first reported in 2009, was initially named early mortality syndrome (EMS). In 2011, a more descriptive name for the acute phase of the disease was proposed as acute hepatopancreatic necrosis syndrome (AHPNS). Affecting both Pacific white shrimp Penaeus vannamei and black tiger shrimp P. monodon, the disease has caused significant losses in Southeast Asian shrimp farms. AHPNS was first classified as idiopathic because no specific causative agent had been identified. However, in early 2013, the Aquaculture Pathology Laboratory at the University of Arizona was able to isolate the causative agent of AHPNS in pure culture. Immersion challenge tests were employed for infectivity studies, which induced 100% mortality with typical AHPNS pathology to experimental shrimp exposed to the pathogenic agent. Subsequent histological analyses showed that AHPNS lesions were experimentally induced in the laboratory and were identical to those found in AHPNS-infected shrimp samples collected from the endemic areas. Bacterial isolation from the experimentally infected shrimp enabled recovery of the same bacterial colony type found in field samples. In 3 separate immersion tests, using the recovered isolate from the AHPNS-positive shrimp, the same AHPNS pathology was reproduced in experimental shrimp with consistent results. Hence, AHPNS has a bacterial etiology and Koch's Postulates have been satisfied in laboratory challenge studies with the isolate, which has been identified as a member of the Vibrio harveyi clade, most closely related to V. parahemolyticus.


Assuntos
Bactérias/classificação , Hepatopâncreas/patologia , Penaeidae , Animais , Interações Hospedeiro-Patógeno , Fatores de Tempo
7.
Public Health ; 126(9): 740-8, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22769595

RESUMO

OBJECTIVES: Drug supply and demand indicators have mainly been analysed without triangulating information on environmental drug availability and consumption. This study proposes an approach to analyse the prevalence of illicit drug consumption together with indirect indicators of drug supply. STUDY DESIGN: Ecological study correlating cocaine seizure data and consumption prevalence estimates at local level, using Italian provinces as the unit of analysis. METHODS: The amount of cocaine seized in proportion to the number of potential consumers was computed at Italian provincial level from the 2005 database of the Italian Central Directorate for Anti-Drug Services. Indicators of consumption prevalence, at provincial level, in 15-16-year-old students from the 2005 European School Survey Project on Alcohol and Other Drugs (ESPAD) and 15-54-year-old respondents from the 2005 Italian Population Survey on Alcohol and Drugs (IPSAD) were correlated with the population-adjusted amount of total seizures and seizures of different sizes. ESPAD data were also regressed on seizure data after controlling for the prediction accrued by socio-economic variables that might cause covariation of seizure and consumption prevalence data. Regression-predicted prevalence values were computed and correlated with the ESPAD prevalence data for the following year. RESULTS: There was a weak general correlation between the population-adjusted total seizure and IPSAD prevalence indicators, but not ESPAD prevalence indicators. In contrast, ESPAD data were more strongly correlated with small seizures. The regression model yielded significant variance in prevalence data (18% and 23% in small and large provinces, respectively) explained by small seizures, and this remained after removing the percentage of variance explained by socio-economic factors and (particularly) education level. A moderate correlation was found between seizure-based predicted values of consumption prevalence and ESPAD values for the following year. CONCLUSIONS: Associating prevalence estimates in adolescents and cocaine seizure data at local level, after 'purifying' the data from trafficking- and wholesale-related large seizures, may represent a starting point for a geo-referenced, seizure-based analysis of initiation into cocaine consumption. This approach may support the collaboration between enforcement and health systems, helping to establish empirical regularities to be translated into useful information for local planners of drug prevention policies in areas at greater risk of increasing incidence.


Assuntos
Transtornos Relacionados ao Uso de Cocaína/epidemiologia , Cocaína , Controle de Medicamentos e Entorpecentes/estatística & dados numéricos , Adolescente , Adulto , Coleta de Dados , Feminino , Humanos , Itália/epidemiologia , Masculino , Pessoa de Meia-Idade , Prevalência , Adulto Jovem
8.
Eur J Gynaecol Oncol ; 33(4): 433-5, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-23091907

RESUMO

BACKGROUND: "Intestinal-type" mucinous carcinoma of the vulva is extremely rare with very few cases reported in the literature. CASE REPORT: The authors report two patients who had diagnosis of intestinal-type mucinous adenocarcinoma of the vulva after excisional biopsy. In both cases, restaging was perfomed with total body computed tomography (CT) scan, gastroscopy, and colonoscopy that showed no other site of disease. A radical vulvectomy with bilateral systematic inguinal lymphadenectomy was performed, and in both cases no residual disease was found. A patient developed metastatic (liver, bone marrow) colonic cancer 36 months after primary surgery, received multiple lines of chemotherapy, and died of disseminated disease 18 months after diagnosis. The other patient was found to have dysplastic polyp in the sigmoid colon, and is alive without disease at 39 months after primary diagnosis. CONCLUSION: Intestinal-type mucinous carcinoma of the vulva has a poor prognosis. Strict endoscopic follow-up of the colon is mandatory in such cases, considering the high propensity of associated gastrointestinal (GI) tumors.


Assuntos
Adenocarcinoma Mucinoso/patologia , Colo/patologia , Neoplasias Vulvares/patologia , Adulto , Feminino , Humanos , Pessoa de Meia-Idade
9.
Eur J Gynaecol Oncol ; 32(2): 153-5, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21614902

RESUMO

BACKGROUND: The objective of this study was to evaluate feasibility, safety and clinical outcome of long-term therapy with topotecan (Hycamtin) in recurrent or persistent ovarian cancer. PATIENTS AND METHODS: A retrospective chart review was conducted on all patients treated with topotecan (TPT) at the Department of Obstetrics and Gynecology, University of Bari, Italy between 1999 and 2007. Pertinent clinicopathologic information, response and toxicity following treatment with TPT were collected. TPT was given at a dosage ranging between 1.5 and 1.0 mg/m2 every three to four weeks. All patients were evaluated for toxicity acording to the CTC and response according to the RECIST response criteria. Time to progression (TTP) was calculated from initiation of TPT treatment and start of the next chemotherapy regimen. RESULTS: A total of 30 patients received TPT for at least eight cycles for recurrent ovarian (22), fallopian tube (3) or primary peritoneal carcinoma (5). A total of 432 cycles of chemotherapy were given, with an average of 14.4 cycles per patient (range 8-22). Dose reduction was necessary in 20 patients (66%). About half of the patients required blood transfusions and growth factors. Non hematologic toxicity was mild and manageable. Responses were observed in 16/30 patients (53%), the remaining having SD. Median time to treatment progression was 28 months (range 9-88). CONCLUSION: Long-term treatment with topotecan in recurrent/persistent ovarian cancer is feasible with limited evidence of cumulative toxicity. The results of this retrospective analysis suggest a potential role for late response and survival benefit for those patients without disease progression who continue topotecan therapy beyond six cycles of treatment.


Assuntos
Carcinoma Endometrioide/tratamento farmacológico , Cistadenocarcinoma Seroso/tratamento farmacológico , Recidiva Local de Neoplasia/tratamento farmacológico , Neoplasias Ovarianas/tratamento farmacológico , Inibidores da Topoisomerase I/uso terapêutico , Topotecan/uso terapêutico , Adulto , Idoso , Idoso de 80 Anos ou mais , Progressão da Doença , Esquema de Medicação , Neoplasias das Tubas Uterinas/tratamento farmacológico , Feminino , Humanos , Pessoa de Meia-Idade , Neoplasias Peritoneais/tratamento farmacológico , Estudos Retrospectivos , Topotecan/efeitos adversos , Resultado do Tratamento
10.
Sci Rep ; 11(1): 14570, 2021 07 16.
Artigo em Inglês | MEDLINE | ID: mdl-34272436

RESUMO

Cleft lip and palate (CL/P) is the most prevalent craniofacial birth defect in humans. None of the surgical procedures currently used for CL/P repair lead to definitive correction of hard palate bone interruption. Advances in tissue engineering and regenerative medicine aim to develop new strategies to restore palatal bone interruption by using tissue or organ-decellularized bioscaffolds seeded with host cells. Aim of this study was to set up a new natural scaffold deriving from a decellularized porcine mucoperiosteum, engineered by an innovative micro-perforation procedure based on Quantum Molecular Resonance (QMR) and then subjected to in vitro recellularization with human bone marrow-derived mesenchymal stem cells (hBM-MSCs). Our results demonstrated the efficiency of decellularization treatment gaining a natural, non-immunogenic scaffold with preserved collagen microenvironment that displays a favorable support to hMSC engraftment, spreading and differentiation. Ultrastructural analysis showed that the micro-perforation procedure preserved the collagen mesh, increasing the osteoinductive potential for mesenchymal precursor cells. In conclusion, we developed a novel tissue engineering protocol to obtain a non-immunogenic mucoperiosteal scaffold suitable for allogenic transplantation and CL/P repair. The innovative micro-perforation procedure improving hMSC osteogenic differentiation potentially impacts for enhanced palatal bone regeneration leading to future clinical applications in humans.


Assuntos
Fenda Labial/terapia , Fissura Palatina/terapia , Células-Tronco Mesenquimais/citologia , Células-Tronco Mesenquimais/fisiologia , Engenharia Tecidual/métodos , Alicerces Teciduais , Transplante de Tecidos/métodos , Animais , Regeneração Óssea , Diferenciação Celular , Microambiente Celular , Colágeno Tipo I/metabolismo , Cadeia alfa 1 do Colágeno Tipo I , Humanos , Osteogênese , Osteonectina/metabolismo , Medicina Regenerativa , Fatores de Transcrição SOXB1/metabolismo , Suínos
11.
Eur Rev Med Pharmacol Sci ; 25(9): 3444-3452, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-34002818

RESUMO

OBJECTIVE: It was hypothesized that activity exercise at professional levels could lead to an increase in metabolic levels and a decrease in performance parameters. These trends are explained by physical activity as a cellular stressor. SUBJECTS AND METHODS: We used an algorithm, Laboratory Index which evaluates salivary cortisol, CK and d-ROMs, collected previously from elite Italian soccer players, compared to InStat Index. The last one estimates analytically the athlete's performance in soccer pitch, applying the Heath Maps. RESULTS: A good agreement between the two Index was obtained, especially for two players, who showed an ideal combined trend. CONCLUSIONS: We would investigate the clinical and activity profile of soccer players with the aim of providing information for the development of training strategies. Also, the performances, during training and match time, are an objective evaluation of the athlete's physical preparation. As a consequence, the combination of two Index could be used for a new approach to the sports world.


Assuntos
Laboratórios Clínicos , Desempenho Físico Funcional , Futebol , Adulto , Humanos , Itália , Masculino
15.
J Virol ; 82(9): 4562-72, 2008 May.
Artigo em Inglês | MEDLINE | ID: mdl-18305046

RESUMO

We report the identification and characterization of p33, the product of Kaposi's sarcoma-associated herpesvirus (KSHV) open reading frame 69 (ORF69), a positional homolog of the conserved herpesvirus protein UL31. p33 is expressed upon induction of viral lytic cycle with early kinetics. Immunofluorescence analysis revealed that in infected cell lines, the protein is localized in the nucleus, both in dotted spots and along the nuclear membrane. Nuclear fractionation experiments showed that p33 partitions with the nuclear matrix, and both immunoblotting of purified virions and immunoelectron microscopy indicated that the novel protein is not a component of the mature virus. Following ectopic expression in KSHV-negative cells, the protein was never associated with the nuclear membrane, suggesting that p33 needs to interact with additional viral proteins to reach the nuclear rim. In fact, after cotransfection with the ORF67 gene, the KSHV positional homolog of UL34, the p33 intranuclear signal changed and the two proteins colocalized on the nuclear membrane. A similar result was obtained when ORF69 was cotransfected with BFRF1, the Epstein-Barr virus (EBV) positional homolog of UL34 and ORF67. Finally, upon cotransfection, ORF69 significantly increased nuclear membrane reduplications induced by BFRF1. The above results indicate that KSHV p33 shares many similarities with its EBV homolog BFLF2 and suggest that functional cross-complementation is possible between members of the gammaherpesvirus subfamily.


Assuntos
Herpesvirus Humano 8/química , Proteínas Virais , Linfócitos B/virologia , Linhagem Celular , Núcleo Celular , Humanos , Membrana Nuclear , Proteínas Nucleares , Fases de Leitura Aberta , RNA Viral/análise , Homologia de Sequência , Proteínas Virais/análise , Proteínas Virais/genética , Proteínas Virais/metabolismo
16.
G Chir ; 40(4): 364-367, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-32011994

RESUMO

Merkel cell carcinoma (MCC) of the skin is a rare but aggressive cutaneous neuroendocrine-derived malignancy that predominantly affects elderly white males. The presence of distant nodal metastases significantly impacts survival. Typical metastatic sites of MCC are liver, bone, brain and skin. Gastrointestinal metastases are uncommon and small bowel is the most common site followed by stomach. We report a case of symptomatic MCC jejunal metastasis.


Assuntos
Carcinoma de Célula de Merkel/secundário , Neoplasias do Jejuno/secundário , Neoplasias Cutâneas , Idoso , Carcinoma de Célula de Merkel/diagnóstico por imagem , Carcinoma de Célula de Merkel/patologia , Feminino , Humanos , Neoplasias do Jejuno/diagnóstico por imagem , Neoplasias do Jejuno/patologia , Imageamento por Ressonância Magnética , Neoplasias Cutâneas/patologia
17.
G Chir ; 40(3): 213-216, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31484011

RESUMO

Appendiceal mucocele represents specimen finding in 0.2-0.3% out of appendectomies. The rupture or perforation in peritoneal cavity might cause pseudomixoma peritonei (PMP), with multiple mucinous deposits in the abdominal cavity. We report a case of PMP caused by a perforated appendiceal cistoadeonoma.


Assuntos
Neoplasias do Apêndice/complicações , Cistadenoma Mucinoso/complicações , Mucocele/complicações , Pseudomixoma Peritoneal/etiologia , Idoso , Neoplasias do Apêndice/diagnóstico por imagem , Cistadenoma Mucinoso/diagnóstico por imagem , Humanos , Laparoscopia , Masculino , Mucocele/diagnóstico por imagem , Ruptura Espontânea/complicações , Ruptura Espontânea/diagnóstico por imagem , Tomografia Computadorizada por Raios X
19.
Minerva Cardioangiol ; 54(4): 507-20, 2006 Aug.
Artigo em Inglês, Italiano | MEDLINE | ID: mdl-17016422

RESUMO

Abdominal aortic aneurysm (AAA) occurs in advanced age. As such, its frequency has increased with the general ageing of the population as has the possibility of finding AAA associated with abdominal visceral disease, especially neoplasms. A malignant mass is present in 4% of patients who undergo aortic reconstruction for AAA. Since surgical treatment for both is often potentially life-threatening, the surgeon is faced with a series of treatment decisions concerning foremost timing of the operation. The main worry is that simultaneous treatment carries a potential risk of infection of the vascular graft. On the other hand, a 2-phase procedure is also burdened by risks linked to a second anaesthesia and a second surgical operation carried out on scar or contaminated tissue and the worsening of one of the 2 potentially life-threatening illnesses. In this situation endovascular treatment of an AAA may represent an advantageous alternative therapeutic strategy.


Assuntos
Aneurisma da Aorta Abdominal/complicações , Gastroenteropatias/complicações , Doenças Urológicas/complicações , Gastroenteropatias/cirurgia , Humanos , Doenças Urológicas/cirurgia
20.
Cancer Res ; 47(21): 5552-6, 1987 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-2822229

RESUMO

For the first time, a screening procedure for antitumor monoclonal antibodies (MOABs) has been developed in which the ability of MOABs to mediate the indirect action of another immunotoxin is the primary criterion for selection of hybridomas for expansion and cloning. Use of the indirect immunotoxin makes it possible to screen MOABs for cytotoxic potential without the necessity of covalently coupling toxin to each individual MOAB. Hybridomas derived from spleens of immunized mice were screened for the synthesis of monoclonal antibodies able to participate in the delivery of a pharmacologically active, indirect immunotoxin conjugate to H69 lung cancer cells. The indirect immunotoxin conjugate was goat anti-mouse immunoglobulin disulfide linked to pokeweed antiviral protein. There was no correlation between the results of the screening with the indirect immunotoxin and an enzyme-linked immunosorbent assay screen for binding of MOAB to tumor cell membranes. An indirect immunotoxin prepared from Fab' fragments of goat anti-mouse immunoglobulin was also effective as an indirect immunotoxin conjugate. Each screening of more than 300 hybridomas was performed in 3 days. The indirect immunotoxin screen detected antitumor MOABs which were not detected by the conventional enzyme-linked immunosorbent assay method. A MOAB selected by the indirect immunotoxin screen was conjugated to pokeweed antiviral protein; the conjugate mediated immunocytotoxicity in a standard direct toxicity assay.


Assuntos
Anticorpos Monoclonais/imunologia , Carcinoma de Células Pequenas/imunologia , Imunotoxinas/farmacologia , Neoplasias Pulmonares/imunologia , Animais , Ensaio de Imunoadsorção Enzimática , Humanos , Hibridomas/imunologia , Fragmentos Fab das Imunoglobulinas/imunologia , Camundongos , Camundongos Endogâmicos BALB C
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