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2.
Ecohealth ; 15(4): 777-791, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-30117001

RESUMO

From 2006 through 2014, we conducted seroepidemiological surveys on non-human primates and sloths to investigate the possible circulation of arboviruses in Bahia Atlantic Forest, Brazil. We collected a total of 196 samples from 103 Leontopithecus chrysomelas, 7 Sapajus xanthosternos, 22 Bradypus torquatus and 7 Bradypus variegatus. Serum samples were tested using neutralization test and hemagglutination inhibition test to detect total antibodies against 26 different arboviruses. The overall prevalence of arboviruses was 36.6% (51/139), with the genus Flavivirus having the highest prevalence (33.1%; 46/139), followed by Phlebovirus (5.0%; 7/139), Orthobunyavirus (4.3%; 6/139) and Alphavirus (0.7%; 1/139). Monotypic reactions suggest that the wild animals were exposed naturally to at least twelve arboviruses. Added results from the neutralization test, animals were exposed to thirteen arboviruses. Most of these viruses are maintained in transmission cycles independent of human hosts, although antibodies against dengue virus serotypes 1, 2 and 3 were found in this study. To our knowledge, this is the first study reporting exposure to arboviruses in L. chrysomelas, S. xanthosternos and B. torquatus. Our results also highlight that the Southern Bahia Atlantic Forest has a variety of vertebrate hosts and potential vectors, which may support the emergence or re-emergence of arboviruses, including those pathogenic to humans.


Assuntos
Infecções por Arbovirus/epidemiologia , Infecções por Arbovirus/veterinária , Arbovírus/isolamento & purificação , Primatas/virologia , Bichos-Preguiça/virologia , Animais , Brasil/epidemiologia , Feminino , Masculino , Estudos Soroepidemiológicos , Testes Sorológicos
3.
Braz. j. biol ; 78(1): 125-132, Feb. 2018. tab, graf
Artigo em Inglês | LILACS | ID: biblio-888837

RESUMO

Abstract Roadkill impact is still underestimated due to the lack of knowledge of its intensity and effect on animal populations. To assess differences between animal roadkills on roads in distinct landscapes, this study recorded meso- and megavertebrate roadkills along 50 km during a year in two highways in the transitional area of Amazonia/Cerrado in Tangará da Serra, Mato Grosso: MT-358 and MT-235, the latter crossing the Paresi Indigenous Land. We assessed roadkill rates and points with higher rates of roadkills, recording the most impacted species, seasonal effects, biomass loss, activity period of species, and traffic volume. We recorded 178 roadkills in 4,950 km travelled, a rate of 0.035 animal/km-travelled. Mammals were the most impacted with 135 roadkills (75.8%), followed by reptiles (6.2%), amphibians (5.6%) and birds (5.1%). Among mammals 51.1% were Carnivora, and the most impacted species was Cerdocyon thous (n = 42). On highway MT-358 (human-modified landscape), we recorded 155 roadkilled mammals, and the most impacted were C. thous (23.9%) and Euphractus sexcinctus (13.5%). Whilst on highway MT-235 (Paresi Indigenous Land), we recorded 23 roadkilled mammals, and the most impacted were Myrmecophaga tridactyla (26.1%) and C. thous (21.7%). The low roadkill rate in the Paresi Indigenous Land might be related to the presence of fauna pathways along the highway and the availability of a forested landscape.


Resumo O impacto de atropelamentos por veículos sobre populações animais ainda é subestimado devido ao pouco conhecimento existente sobre sua intensidade e seus efeitos. Para avaliar diferenças entre atropelamentos de animais em rodovias inseridas em paisagens distintas, este trabalho registrou atropelamentos de meso e mega vertebrados em trechos de 50 km durante um ano em duas rodovias na região de transição Amazônia/Cerrado em Tangará da Serra, Mato Grosso: MT-358 e MT-235, sendo que a segunda cruza a Terra Indígena Paresi. Avaliamos as taxas de atropelamento e os locais de maior intensidade, registrando as espécies mais impactadas. Avaliamos efeitos de sazonalidade, perda de biomassa, horário de atividade das espécies e horário de maior fluxo de veículos. Foram 178 animais atropelados em 4.950 km percorridos, com 33 espécies (15 ordens), totalizando 0,035 animais/km-percorrido. Os mamíferos foram os mais atingidos com 135 atropelamentos (75,8%), seguidos por répteis (6,2%), anfíbios (5,6%) e aves (5,1%). Entre os mamíferos atropelados 51,1% pertencem à ordem carnívora, e a espécie mais atropelada foi Cerdocyon thous (n = 42). Na rodovia MT-358 (antropizada) foram registrados 155 atropelamentos de mamíferos, sendo que C. thous (23,9%) e Euphractus sexcinctus (13,5%) foram os mais atropelados. Enquanto na rodovia MT-235 foram registrados 23 atropelamentos sendo Myrmecophaga tridactyla (26.1%) e C. thous (21,7%) as espécies mais afetadas. Observamos menor taxa de atropelamentos dentro da Terra Indígena Paresi, possivelmente devido a presença de passagens para fauna ao longo da rodovia e maior quantidade de áreas florestadas.


Assuntos
Animais , Condução de Veículo , Vertebrados , Biodiversidade , Meios de Transporte , Brasil/epidemiologia
4.
Braz J Biol ; 78(1): 125-132, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28614424

RESUMO

Roadkill impact is still underestimated due to the lack of knowledge of its intensity and effect on animal populations. To assess differences between animal roadkills on roads in distinct landscapes, this study recorded meso- and megavertebrate roadkills along 50 km during a year in two highways in the transitional area of Amazonia/Cerrado in Tangará da Serra, Mato Grosso: MT-358 and MT-235, the latter crossing the Paresi Indigenous Land. We assessed roadkill rates and points with higher rates of roadkills, recording the most impacted species, seasonal effects, biomass loss, activity period of species, and traffic volume. We recorded 178 roadkills in 4,950 km travelled, a rate of 0.035 animal/km-travelled. Mammals were the most impacted with 135 roadkills (75.8%), followed by reptiles (6.2%), amphibians (5.6%) and birds (5.1%). Among mammals 51.1% were Carnivora, and the most impacted species was Cerdocyon thous (n = 42). On highway MT-358 (human-modified landscape), we recorded 155 roadkilled mammals, and the most impacted were C. thous (23.9%) and Euphractus sexcinctus (13.5%). Whilst on highway MT-235 (Paresi Indigenous Land), we recorded 23 roadkilled mammals, and the most impacted were Myrmecophaga tridactyla (26.1%) and C. thous (21.7%). The low roadkill rate in the Paresi Indigenous Land might be related to the presence of fauna pathways along the highway and the availability of a forested landscape.


Assuntos
Condução de Veículo , Biodiversidade , Vertebrados , Animais , Brasil/epidemiologia , Meios de Transporte
5.
Artigo em Inglês | LILACS-Express | LILACS, VETINDEX | ID: biblio-1467037

RESUMO

Abstract Roadkill impact is still underestimated due to the lack of knowledge of its intensity and effect on animal populations. To assess differences between animal roadkills on roads in distinct landscapes, this study recorded meso- and megavertebrate roadkills along 50 km during a year in two highways in the transitional area of Amazonia/Cerrado in Tangará da Serra, Mato Grosso: MT-358 and MT-235, the latter crossing the Paresi Indigenous Land. We assessed roadkill rates and points with higher rates of roadkills, recording the most impacted species, seasonal effects, biomass loss, activity period of species, and traffic volume. We recorded 178 roadkills in 4,950 km travelled, a rate of 0.035 animal/km-travelled. Mammals were the most impacted with 135 roadkills (75.8%), followed by reptiles (6.2%), amphibians (5.6%) and birds (5.1%). Among mammals 51.1% were Carnivora, and the most impacted species was Cerdocyon thous (n = 42). On highway MT-358 (human-modified landscape), we recorded 155 roadkilled mammals, and the most impacted were C. thous (23.9%) and Euphractus sexcinctus (13.5%). Whilst on highway MT-235 (Paresi Indigenous Land), we recorded 23 roadkilled mammals, and the most impacted were Myrmecophaga tridactyla (26.1%) and C. thous (21.7%). The low roadkill rate in the Paresi Indigenous Land might be related to the presence of fauna pathways along the highway and the availability of a forested landscape.


Resumo O impacto de atropelamentos por veículos sobre populações animais ainda é subestimado devido ao pouco conhecimento existente sobre sua intensidade e seus efeitos. Para avaliar diferenças entre atropelamentos de animais em rodovias inseridas em paisagens distintas, este trabalho registrou atropelamentos de meso e mega vertebrados em trechos de 50 km durante um ano em duas rodovias na região de transição Amazônia/Cerrado em Tangará da Serra, Mato Grosso: MT-358 e MT-235, sendo que a segunda cruza a Terra Indígena Paresi. Avaliamos as taxas de atropelamento e os locais de maior intensidade, registrando as espécies mais impactadas. Avaliamos efeitos de sazonalidade, perda de biomassa, horário de atividade das espécies e horário de maior fluxo de veículos. Foram 178 animais atropelados em 4.950 km percorridos, com 33 espécies (15 ordens), totalizando 0,035 animais/km-percorrido. Os mamíferos foram os mais atingidos com 135 atropelamentos (75,8%), seguidos por répteis (6,2%), anfíbios (5,6%) e aves (5,1%). Entre os mamíferos atropelados 51,1% pertencem à ordem carnívora, e a espécie mais atropelada foi Cerdocyon thous (n = 42). Na rodovia MT-358 (antropizada) foram registrados 155 atropelamentos de mamíferos, sendo que C. thous (23,9%) e Euphractus sexcinctus (13,5%) foram os mais atropelados. Enquanto na rodovia MT-235 foram registrados 23 atropelamentos sendo Myrmecophaga tridactyla (26.1%) e C. thous (21,7%) as espécies mais afetadas. Observamos menor taxa de atropelamentos dentro da Terra Indígena Paresi, possivelmente devido a presença de passagens para fauna ao longo da rodovia e maior quantidade de áreas florestadas.

6.
Braz J Biol ; 74(3): 523-8, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25296198

RESUMO

Forest fragmentation affects animal population dynamics mainly by loss of habitat and disruption of animal movement. Lizard assemblages are affected by environmental changes, but, depending on their ecological needs, some species might be more vulnerable than others. The southern Amazon suffers accelerated anthropic actions replacing natural environments by farmland (crops and pasture). This region is considerably drier than most of the northern Amazon, with stational semi-deciduous forests fragmented and isolated by pasture, and crops to a lesser extent. Here we report data on lizard assemblages using semi-deciduous forests, forest edge and the surrounding pasture in the southern Amazon in Mato Grosso, Brazil. Lizards were collected in 21 forest fragments (41 to 7,035 ha) surrounded by pasture; using pitfall traps placed on a degradation gradient - from pasture inwards forest fragment (up to 200 m). We collected 242 individuals (14 species, seven families) in 6,300 trap-days. The pattern of species occurrence was largely nested and this nesting was associated with three habitat guilds (generalist, edge-tolerant, and forest species). Although there was no obvious fragmentation effect on lizards diversity community-wise, Hoplocercus spinosus, Bachia dorbignyi, Micrablepharus maximiliani and Kentropyx calcarta were more vulnerable to such effects than all other ten species collected. We verified that assemblages inhabiting pasture and forest edge are a nested subset of assemblages from the forest core. The remnant native vegetation is not distributed homogeneously and lizards species can persist in different parts of the landscape, therefore we recommend the protection of forest remnants as an important conservation action for lizards of the southern Amazon.


Assuntos
Monitoramento Ambiental , Florestas , Lagartos/classificação , Animais , Brasil , Conservação dos Recursos Naturais , Densidade Demográfica , Dinâmica Populacional
7.
J Med Primatol ; 34(3): 156-62, 2005 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-15860125

RESUMO

There are few papers about physiological indices in Callithrix penicillata, an increasing primate model in biomedicine. We investigated levels of plasmatic cortisol, plasmatic glucose, free fatty acids, blood cells, tympanic temperature, rectal temperature in C. penicllata, under a fast restraint. Measures of body and weight were accomplished. Males and females were not different regarding any measurements. Body measurements indicated differences between adults and juveniles. Adults showed higher hematocrit and a tendency for higher free fatty acids than juveniles. Right tympanic temperature was higher in adults than juveniles. This result suggests a higher reaction metabolism in adults than juveniles under a restraint stress. Due to the short-time of collecting the data, plasmatic cortisol did not influence physiological parameters. Therefore, we suggest that present results could be considered referential values of C. penicillata physiology.


Assuntos
Animais de Zoológico , Callithrix/fisiologia , Fatores Etários , Animais , Contagem de Células Sanguíneas , Glicemia , Temperatura Corporal , Peso Corporal , Brasil , Ácidos Graxos não Esterificados/metabolismo , Feminino , Hematócrito , Hidrocortisona/sangue , Masculino , Valores de Referência , Fatores Sexuais
8.
Ital Heart J ; 2(10): 772-7, 2001 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11721722

RESUMO

BACKGROUND: Paroxysmal atrial tachyarrhythmias have been frequently detected in patients paced for atrioventricular block. However, it is not yet clear which is the actual incidence of such arrhythmias and if they were preexisting but not recognized, or if they could be related to the device. METHODS: One hundred and forty-five patients with a diagnosis of second or third degree atrioventricular block were enrolled into the study. One hundred and twenty-four received a pacemaker Medtronic Thera DDD and 21 a Medtronic Thera VDD. High rate atrial episodes were evaluated for 3 months after enrollment. Atrial electrograms documenting paroxysmal atrial fibrillation (AF) were stored and programming of atrial sensitivity and pacemaker diagnostics was very strict in order to exclude short and false positive AF episodes. RESULTS: Thirty-six patients (35%) in the DDD group and 8 (42%) in the VDD group presented with AF (p = NS). The mean number o


Assuntos
Fibrilação Atrial/etiologia , Estimulação Cardíaca Artificial/métodos , Bloqueio Cardíaco/terapia , Marca-Passo Artificial/efeitos adversos , Idoso , Idoso de 80 Anos ou mais , Fibrilação Atrial/diagnóstico , Desenho de Equipamento , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
9.
J Surg Oncol ; 74(2): 122-9, 2000 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-10914821

RESUMO

BACKGROUND AND OBJECTIVES: It is possible to formulate models capable of reproducing the main details of the physical processes involved in the evolution of biological systems. The complexity of the problem requires to begin with a simple and universal model for the description of the cellular growth, to be adapted successively to the local conditions found in clinically observed neoplastic growths. METHODS: A model based on the Local Interaction Simulation Approach (LISA) has been formulated for the simulation of growth, diffusion, and metastasis of neoplasms. The vascularization is described by a blood vessel located on one edge of the specimen in which a constant and homogeneous flow is assumed. A nutrient density is defined to mimic the blood flow within the tissue. RESULTS: Photograms taken at proper times may identify the main characteristics of the tumor evolution and describe its volume variations in a transversal section. Furthermore, it is possible to monitor constantly the volume of the neoplasm and of the necrotic tissue as a function of time, as well as the portion of cells that have migrated in the blood vessel. CONCLUSIONS: In spite of strong simplifying assumptions, the model presents good qualitative agreement with clinical data, which may be further improved by more detailed information about cancer cells properties or local vascular system patterns.


Assuntos
Modelos Teóricos , Metástase Neoplásica/fisiopatologia , Neoplasias/patologia , Animais , Apoptose , Circulação Sanguínea , Divisão Celular , Humanos , Neoplasias/irrigação sanguínea , Células Neoplásicas Circulantes
10.
Lett Appl Microbiol ; 29(4): 258-63, 1999 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-10583755

RESUMO

The recent revision of the taxonomy of 'faecal streptococci' prompted us to verify the importance of identifying the species of this group of cocci. During a study carried out to assess the hygienic quality of environmental samples from a variety of sources, we isolated 198 strains named faecal streptococci on the basis of conventional international tests (EVA broth multiple tube test) used for Public Health purposes. The predominant species were Enterococcus faecalis (39%) and Ent. faecium (29%), followed by Ent. durans/hirae, Ent. casseliflavus/gallinarum, Ent. raffinosus, with a different prevalence of the species depending on the source. Eighty-four per cent of isolates were true faecal species. Only one isolate was identified as belonging to the Streptococcus genus. The authors stress the opportunity to identify the species. This may help to clarify the ecological and epidemiological characteristics of intestinal enterococci and streptococci in the environment, in drinking and recreational waters and their meaning as indicators of faecal pollution. All isolates were tested for their susceptibility to some antimicrobial agents widely used in medical therapy and the pattern was compared with the pattern of isolates from clinical specimens.


Assuntos
Enterococcus/classificação , Microbiologia Ambiental , Fezes/microbiologia , Streptococcus/classificação , Antibacterianos/farmacologia , Resistência Microbiana a Medicamentos , Resistência a Múltiplos Medicamentos , Enterococcus/efeitos dos fármacos , Infecções por Bactérias Gram-Negativas/microbiologia , Humanos , Testes de Sensibilidade Microbiana , Urina/microbiologia
11.
Am J Cardiol ; 84(3): 264-9, 1999 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-10496433

RESUMO

Dobutamine and enoximone stimulate independently inotropic reserve by increasing intracellular cyclic adenosine monophosphate. The potential of enoximone (0.75 mg/kg body weight over 10 minutes) followed by very low dose (2.5 microg/kg/min) dobutamine echocardiography to predict recovery of ventricular function in akinetic and dyskinetic postinfarcted areas was studied. We enrolled 22 patients with previous Q-wave myocardial infarction and regional wall motion abnormalities related to left anterior descending arterial disease, left ventricular ejection fraction <40%, and all scheduled for myocardial revascularization. A 10 microg/kg/min dobutamine test was performed 48 hours before the study protocol. Test images obtained at peak of pharmacodynamic effects were compared with those obtained at 4 months after myocardial revascularization. We used a 16-segment ventricular model and a 5-grade scoring system. Resting regional myocardial dysfunction graded > or =2 was present in 267 of 352 segments evaluated. Contractile reserve (decrease in resting wall motion score > or =2 grades) at peak effect of enoximone infusion was present in 34 of 112 severely hypokinetic, 42 of 117 akinetic, and 14 of 38 dyskinetic segments. The inotropic reserve evaluated after very low dose dobutamine was observed in 34 of 112 severely hypokinetic, 49 of 117 akinetic, and 20 of 38 dyskinetic segments. After revascularization, recovery of function was observed in 31 of 112 severely hypokinetic, 49 of 117 akinetic, and 21 of 38 dyskinetic segments. Overall, there was a significant correlation between absolute score changes of segments which were abnormal at baseline (n = 267) to enoximone peak effects (r = 0.49, p <0.001) to predict absolute changes after revascularization; after dobutamine there was progress toward identity (r = 0.62, p <0.001) and the difference was significant among correlation slopes of dobutamine alone, enoximone alone, and enoximone plus very low dose dobutamine echocardiograophy (0.45+/-0.04, 0.51+/-0.04, and 0.63+/-0.04, respectively, F = 5.25, p = 0.005). Therefore, enoximone followed by very low dose dobutamine may assess myocardial viability of postinfarcted akinetic and dyskinetic areas. This test may be useful when evaluating patients with more severe cardiac failure and/or life-threatening arrhythmias.


Assuntos
Cardiotônicos/farmacologia , Dobutamina , Ecocardiografia/métodos , Enoximona/farmacologia , Infarto do Miocárdio/diagnóstico por imagem , Vasodilatadores/farmacologia , Disfunção Ventricular Esquerda/diagnóstico por imagem , Adulto , Cardiotônicos/administração & dosagem , Dobutamina/administração & dosagem , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/complicações , Valor Preditivo dos Testes , Índice de Gravidade de Doença , Disfunção Ventricular Esquerda/etiologia
12.
J Exp Clin Cancer Res ; 18(1): 79-83, 1999 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-10374683

RESUMO

Cervical lymphnodes metastatization by the squamous cell carcinoma of the head and neck is well known as a prognostic negative factor as far as survival is concerned. Multivariate analysis has been used on 207 cases of head and neck squamous cell carcinomas (HNSCC) in order to identify the possible prognostic significance of a group of clinical and histopathological characteristics, aiming to find a correlation with the possible occurrence of cervical lymphnodes. Two hundred and seven patients (168 males and 39 females, mean age: 62 years) with SCCHN were studied. They underwent surgery alone and radiotherapeutic associated treatment. Variables regarding the patient, carcinoma and histology were analysed: age, sex, smoking and alcohol consumption, performance status, concomitant internal pathologies (cardiopathies, hepatopathies, broncho-pneumopathies, metabolic disorders), site and size of primary tumor (T stage), number and size of laterocervical lymph node localization (clinical N stage), grading, vascular permeation, perineural infiltration. Multivariate analysis of prognostic factors was performed using BMDP's PLR programme. Some variables showed a great risk of lymphnode metastasis; among sites: supraglottic larynx (p = 0.05), base of the tongue (p = 0.04), hypopharynx (p = 0.05); some histological parameters as lower degree of histological differentiation (p = 0.02), the presence of vascular permeation (p = 0.06) and perineural invasion (p = 0.07) appear to represent predisposing factors for the onset of adenopathies. By considering prognostic factors as shown, it is possible to better identify metastasis risk cases, that leads to improved therapeutical strategies.


Assuntos
Carcinoma de Células Escamosas/patologia , Neoplasias de Cabeça e Pescoço/patologia , Metástase Linfática , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Carcinoma de Células Escamosas/diagnóstico por imagem , Carcinoma de Células Escamosas/mortalidade , Carcinoma de Células Escamosas/cirurgia , Terapia Combinada , Feminino , Neoplasias de Cabeça e Pescoço/diagnóstico por imagem , Neoplasias de Cabeça e Pescoço/mortalidade , Neoplasias de Cabeça e Pescoço/cirurgia , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Estadiamento de Neoplasias , Probabilidade , Prognóstico , Radiografia , Estudos Retrospectivos , Taxa de Sobrevida , Fatores de Tempo
13.
Radiother Oncol ; 53(2): 143-8, 1999 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-10665792

RESUMO

BACKGROUND AND PURPOSE: The experience resulting from large cooperative studies shows that correct radiation therapy at doses adequate to the tumor bulk are crucial for local control of rhabdomyosarcoma. The aim of the present study was to document the correlation between modalities and doses of radiotherapy and radiation side effects. PATIENTS AND METHODS: Between 1980 and 1997, 19 patients affected by primary orbital rhabdomyosarcoma have been followed at the University Federico II of Naples. All but three patients, who received 45, 54 and 55 Gy respectively, have been treated by immediate radiation at the dose of 60 Gy, delivered in 2 Gy fractions, five times per week, by cobalt 60 megavoltage equipment. Combined chemotherapy using vincristine and vincristine plus dactinomycin on alternate weeks was also administered as part of induction therapy. RESULTS: An overall survival rate of 94.7% was registered. In our patients the majority of radiation late effects were paid by orbit and ocular adnexa. Side effects to lens and ocular structures were fewer and of low grade. CONCLUSIONS: Radiation therapy is still essential for local control of orbital rhabdomyosarcoma, however radiation side effects have to be carefully considered together with the therapeutic goal to be obtained.


Assuntos
Neoplasias Orbitárias/radioterapia , Lesões por Radiação/etiologia , Rabdomiossarcoma/radioterapia , Criança , Pré-Escolar , Terapia Combinada , Feminino , Humanos , Masculino , Neoplasias Orbitárias/mortalidade , Radioterapia/efeitos adversos , Dosagem Radioterapêutica , Estudos Retrospectivos , Rabdomiossarcoma/mortalidade , Taxa de Sobrevida
14.
Acta Otorhinolaryngol Ital ; 17(1): 15-21, 1997 Feb.
Artigo em Italiano | MEDLINE | ID: mdl-9412150

RESUMO

Myringoplasty has been increasingly refined in recent years and today the most frequently employed are the "overlay", the "underlay" and the "interlay". Of these the overlay technique appears to best guarantee graft stability. However, with this technique there is the risk of blunting and neotympanum lateralization which can compromise functional recovery. To obviate these drawbacks, the authors propose a modification of the classical overlay technique. This modification consists of detachment of the anterior portion of the Gerlach annulus and the adjacent protympanum mucosa in order to insert the graft between the bony and fibrous portions of the annulus. This technique is defined as the "Annular Wedge Tympanoplasty" (AWT). From January 1993 to July 1994 a total of 74 tympanoplasties were performed using the AWT technique to reconstruct the tympanic membrane. In 71 (96%) of these, the opening closed completely. As regards incomplete healing, 2 cases showed signs of blunting, 3 showed posterior lateralization and 1 full lateralization with a reduction in the hearing level recovery. The work is not conclusive although it does present a technique which is easy to perform and which provides good functional recovery.


Assuntos
Miringoplastia/métodos , Timpanoplastia/métodos , Adolescente , Adulto , Idoso , Criança , Pré-Escolar , Otopatias/cirurgia , Humanos , Pessoa de Meia-Idade , Estudos Retrospectivos
15.
Cancer Lett ; 103(2): 177-82, 1996 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-8635155

RESUMO

Primary maxillary localization of Ewing's sarcoma is unusual. Involvement of facial bones is characterized by clinical and radiological features distinct from those commonly observed in other sites. Because of the above peculiarities a delay in diagnosis and thus in starting treatment is very probable in such cases. We report here two new cases of Ewing's sarcoma localized to facial bones, successfully treated by local high dosage radiotherapy and systemic chemotherapy. Our experience suggests that, especially for particular sites not suitable to radical surgery, radiation therapy can represent an effective tool to achieve local control of the tumor.


Assuntos
Neoplasias Maxilares/terapia , Sarcoma de Ewing/terapia , Adulto , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Criança , Feminino , Humanos , Masculino , Neoplasias Maxilares/tratamento farmacológico , Neoplasias Maxilares/radioterapia , Sarcoma de Ewing/tratamento farmacológico , Sarcoma de Ewing/radioterapia , Tomografia Computadorizada por Raios X
16.
Haematologica ; 81(2): 155-8, 1996.
Artigo em Inglês | MEDLINE | ID: mdl-8641646

RESUMO

Granulocytic sarcoma (GS) is a rare tumor composed of immature myeloid cells. Exceedingly rare in childhood, it has more commonly been described in association with acute myeloid leukemia. Occasional nonleukemic patients generally go on to develop overt leukemia in a mean period of 10.5 months from diagnosis of GS. We report here two new cases of GS diagnosed in nonleukemic children. They were successfully treated with local radiation therapy and conventional systemic chemotherapy. The need to suspect more often this all too frequently misdiagnosed disease is emphasized. The role of optimally delivered radiation therapy in achieving and maintaining local control of the tumor is discussed.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Leucemia Mieloide/terapia , Criança , Terapia Combinada , Feminino , Humanos , Leucemia Mieloide/tratamento farmacológico , Leucemia Mieloide/radioterapia
17.
Acta Otorhinolaryngol Ital ; 15(1): 15-20, 1995 Feb.
Artigo em Italiano | MEDLINE | ID: mdl-7597897

RESUMO

In the present study possible interactions between dizziness, or vertigo, and eventual malfunctioning of the Autonomic Nervous System were evaluated. Two groups of ten patients each were patients each were tested. All the patients had vertigo or dizziness of uncertain etiology and ten had arterious hypotension. A careful anamnestic research was carried out in order to individualize symptoms or elements which could induce dysautonomia. A series of 6 tests aimed at evaluating cardiovascular responses was performed in all the patients. Alterations were present in 65% of the test responses. In particular, results were altered in patients with arterious hypotension. The Authors, underline the effectiveness of an adequate anamnesis in identifying patients with possible dysautonomia and affirm the validity of cardiovascular tests (non-invasive, specific and sensitive in obtaining information concerning the etiology of particular forms of dizziness.


Assuntos
Doenças do Sistema Nervoso Autônomo/fisiopatologia , Vertigem/fisiopatologia , Adolescente , Adulto , Fatores Etários , Audiometria , Pressão Sanguínea , Encéfalo/fisiopatologia , Feminino , Coração/fisiopatologia , Frequência Cardíaca , Humanos , Masculino , Pessoa de Meia-Idade , Nistagmo Patológico , Reflexo Vestíbulo-Ocular , Movimentos Sacádicos , Vertigem/diagnóstico
18.
Tumori ; 80(1): 40-3, 1994 Feb 28.
Artigo em Inglês | MEDLINE | ID: mdl-8191597

RESUMO

AIMS: The authors report their experience on the treatment of 28 cases of middle ear (3) and external auditory meatus (EAM) cancers (25) with surgery and/or radiation therapy. According to histologic type, there were 23 squamous cell carcinomas, 4 basal cell carcinomas and 1 adenocystic carcinoma. METHODS: Surgery alone was performed in 2 cases, surgery combined with radiotherapy in 11 cases, and radiotherapy alone in 15 cases. Postoperative radiation therapy dose ranged between 4500 and 5500 cGy; the definitive dose was 6000-7000 cGy. The median follow-up was 61 months. RESULTS: Complete response rate 6 weeks after the end of the treatment, evaluated by CT scan, was 85.7% (24/28). Definitive local control was obtained in 20/28 cases for the primary site and in 26/28 cases for the neck. Nine of the 10 recurrences were retreated with low-dose radiotherapy combined with surgery, chemotherapy or hyperthermia. A new local control was obtained in 2 cases. Four patients were lost during the follow-up at 13, 14, 17 and 23 months after the end of the treatment. The survival rate was 54% (13/24); disease-free survival was 50% (11/22). CONCLUSIONS: Despite a not very aggressive treatment, our results are quite good.


Assuntos
Carcinoma/radioterapia , Carcinoma/cirurgia , Meato Acústico Externo , Neoplasias da Orelha/radioterapia , Neoplasias da Orelha/cirurgia , Orelha Média , Adulto , Idoso , Idoso de 80 Anos ou mais , Terapia Combinada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Análise de Sobrevida , Resultado do Tratamento
19.
Acta Endocrinol (Copenh) ; 128(5): 439-42, 1993 May.
Artigo em Inglês | MEDLINE | ID: mdl-8317191

RESUMO

A patient with suppurative thyroiditis due to infection with Salmonella brandenburg is reported. Localization of the infection occurred to a pre-existing thyroid nodule after Salmonella bacteremia. S. brandenburg was isolated in pure culture from the fluid obtained by needle aspiration of the suppurated thyroid nodule. Surgical drainage followed by subtotal thyroidectomy was required to cure the disease. No evidence of pyriform sinus fistula was found. Suppurative thyroiditis due to Salmonella ubiquitous serotypes is an extremely rare condition, and infection to the thyroid produced by S. brandenburg is reported now for the first time. Indeed, the isolation rate of S. brandenburg from all human sources is low, and this microorganism is an uncommon agent of bacteremia.


Assuntos
Infecções por Salmonella/microbiologia , Salmonella/isolamento & purificação , Tireoidite Supurativa/microbiologia , Adulto , Ceftriaxona/uso terapêutico , Drenagem , Feminino , Humanos , Salmonella/classificação , Infecções por Salmonella/tratamento farmacológico , Infecções por Salmonella/cirurgia , Sorotipagem , Glândula Tireoide/microbiologia , Tireoidectomia , Tireoidite Supurativa/tratamento farmacológico , Tireoidite Supurativa/cirurgia
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