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1.
Ann Oncol ; 24(7): 1900-1907, 2013 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-23519998

RESUMO

BACKGROUND: Based upon preclinical evidence for improved antitumor activity in combination, this phase I study investigated the maximum-tolerated dose (MTD), safety, activity, pharmacokinetics (PK), and biomarkers of the mammalian target of rapamycin inhibitor, temsirolimus, combined with sorafenib in hepatocellular carcinoma (HCC). PATIENTS AND METHODS: Patients with incurable HCC and Child Pugh score ≤B7 were treated with sorafenib plus temsirolimus by 3 + 3 design. The dose-limiting toxicity (DLT) interval was 28 days. The response was assessed every two cycles. PK of temsirolimus was measured in a cohort at MTD. RESULTS: Twenty-five patients were enrolled. The MTD was temsirolimus 10 mg weekly plus sorafenib 200 mg twice daily. Among 18 patients at MTD, DLT included grade 3 hand-foot skin reaction (HFSR) and grade 3 thrombocytopenia. Grade 3 or 4 related adverse events at MTD included hypophosphatemia (33%), infection (22%), thrombocytopenia (17%), HFSR (11%), and fatigue (11%). With sorafenib, temsirolimus clearance was more rapid (P < 0.05). Two patients (8%) had a confirmed partial response (PR); 15 (60%) had stable disease (SD). Alpha-fetoprotein (AFP) declined ≥50% in 60% assessable patients. CONCLUSION: The MTD of sorafenib plus temsirolimus in HCC was lower than in other tumor types. HCC-specific phase I studies are necessary. The observed efficacy warrants further study.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Biomarcadores Tumorais/sangue , Carcinoma Hepatocelular/tratamento farmacológico , Neoplasias Hepáticas/tratamento farmacológico , alfa-Fetoproteínas/metabolismo , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/farmacocinética , Biomarcadores/sangue , Carcinoma Hepatocelular/sangue , Carcinoma Hepatocelular/patologia , Intervalo Livre de Doença , Esquema de Medicação , Feminino , Humanos , Neoplasias Hepáticas/sangue , Neoplasias Hepáticas/patologia , Masculino , Dose Máxima Tolerável , Pessoa de Meia-Idade , Células Neoplásicas Circulantes , Niacinamida/administração & dosagem , Niacinamida/análogos & derivados , Compostos de Fenilureia/administração & dosagem , Precursores de Proteínas/sangue , Protrombina , Sirolimo/administração & dosagem , Sirolimo/análogos & derivados , Sorafenibe , Resultado do Tratamento
2.
J Surg Oncol ; 102(5): 539-42, 2010 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-20812264

RESUMO

Bevacizumab (Avastin™; rhuMab VEGF), a monoclonal antibody targeting vascular endothelial growth factor (VEGF), has seen increased use in the perioperative treatment of colorectal and pancreatic cancer. Little is known, however, regarding its impact on surgical outcomes in patients undergoing resection. The objective of this review was to examine if the addition of bevacizumab to existing neoadjuvant regimens increases morbidity after cancer resection.


Assuntos
Inibidores da Angiogênese/efeitos adversos , Anticorpos Monoclonais/efeitos adversos , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Pancreáticas/tratamento farmacológico , Inibidores da Angiogênese/administração & dosagem , Anticorpos Monoclonais/administração & dosagem , Anticorpos Monoclonais Humanizados , Bevacizumab , Neoplasias Colorretais/cirurgia , Humanos , Terapia Neoadjuvante , Neoplasias Pancreáticas/cirurgia , Complicações Pós-Operatórias , Resultado do Tratamento
3.
J Natl Cancer Inst ; 102(1): 47-53, 2010 Jan 06.
Artigo em Inglês | MEDLINE | ID: mdl-20007525

RESUMO

BACKGROUND: Patients treated with epidermal growth factor receptor inhibitors (EGFRIs) frequently experience dermatologic toxic effects. Whereas the impact of these effects on quality of life and EGFRI dosing has been described, their impact on physical health has not been ascertained. We examined the prevalence of infections that complicate dermatologic toxic effects of EGFRIs. METHODS: We used retrospective chart review methods to analyze 221 patients who were treated in the Skin and Eye Reactions to Inhibitors of EGFR and Kinases clinic, a referral clinic for dermatologic toxic effects of cancer therapies. We reviewed results of bacterial cultures, histopathologic assessment of biopsy samples, and immunohistochemical staining of skin specimens for viral pathogens that were recorded in the patients' medical records. Associations between patient demographic and treatment characteristics and the development of infections were examined using the Fisher exact test. All statistical tests were two-sided. RESULTS: Eighty-four (38%) of the 221 patients showed evidence of infection at sites of dermatologic toxic effect. Fifty (22.6%) of the 221 patients had cultures positive for Staphylococcus aureus, and 12 (5.4%) of the 221 patients cultured positive for methicillin-resistant S aureus. Less frequent infections included herpes simplex (3.2%), herpes zoster (1.8%), and dermatophytes (10.4%). The seborrheic region was the most prevalent site of infection, and patients with leukopenia had higher risk for infection than patients who did not have leukopenia (P = .005). Demographic factors and associated treatments were not associated with the occurrence of a dermatologic infection (P > or = .05). CONCLUSIONS: Patients with dermatologic toxic effects following treatment with EGFRIs have a high prevalence of cutaneous infections. Most notably, bacterial infections developed at sites previously affected by dermatologic toxic effects, with leukopenic patients being at greater risk.


Assuntos
Antineoplásicos/efeitos adversos , Receptores ErbB/antagonistas & inibidores , Dermatopatias Infecciosas/etiologia , Pele/microbiologia , Pele/virologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Antineoplásicos/administração & dosagem , Biópsia , Dermatomicoses/etiologia , Feminino , Humanos , Imuno-Histoquímica , Leucopenia/induzido quimicamente , Leucopenia/complicações , Masculino , Prontuários Médicos , Pessoa de Meia-Idade , Neoplasias/tratamento farmacológico , Prevalência , Estudos Retrospectivos , Pele/patologia , Dermatopatias Bacterianas/etiologia , Dermatopatias Infecciosas/microbiologia , Dermatopatias Infecciosas/virologia , Dermatopatias Virais/etiologia , Adulto Jovem
4.
Am J Transplant ; 9(8): 1920-8, 2009 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-19552767

RESUMO

Chemoembolization and other ablative therapies are routinely utilized in downstaging from United Network for Organ Sharing (UNOS) T3 to T2, thus potentially making patients transplant candidates under the UNOS model for end-stage liver disease (MELD) upgrade for hepatocellular carcinoma (HCC). This study was undertaken to compare the downstaging efficacy of transarterial chemoembolization (TACE) versus transarterial radioembolization. Eighty-six patients were treated with either TACE (n = 43) or transarterial radioembolization with Yttrium-90 microspheres (TARE-Y90; n = 43). Median tumor size was similar (TACE: 5.7 cm, TARE-Y90: 5.6 cm). Partial response rates favored TARE-Y90 versus TACE (61% vs. 37%). Downstaging to UNOS T2 was achieved in 31% of TACE and 58% of TARE-Y90 patients. Time to progression according to UNOS criteria was similar for both groups (18.2 months for TACE vs. 33.3 months for TARE-Y90, p = 0.098). Event-free survival was significantly greater for TARE-Y90 than TACE (17.7 vs. 7.1 months, p = 0.0017). Overall survival favored TARE-Y90 compared to TACE (censored 35.7/18.7 months; p = 0.18; uncensored 41.6/19.2 months; p = 0.008). In conclusion, TARE-Y90 appears to outperform TACE for downstaging HCC from UNOS T3 to T2.


Assuntos
Carcinoma Hepatocelular/patologia , Carcinoma Hepatocelular/terapia , Quimioembolização Terapêutica , Embolização Terapêutica , Neoplasias Hepáticas/patologia , Neoplasias Hepáticas/terapia , Radioisótopos de Ítrio/uso terapêutico , Adulto , Idoso , Idoso de 80 Anos ou mais , Progressão da Doença , Feminino , Seguimentos , Humanos , Transplante de Fígado , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Seleção de Pacientes , Estudos Retrospectivos , Resultado do Tratamento
5.
Cancer Chemother Pharmacol ; 63(2): 363-70, 2009 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-18398613

RESUMO

PURPOSE: Combination chemotherapy results in a significant survival advantage in patients with advanced gastric cancer compared to best supportive care. Nevertheless, the prognosis remains poor with a median survival of 8-10 months. Topoisomerase-I inhibitors such as irinotecan have activity in advanced gastric cancer. Pegamotecan may offer significant advantages over other topoisomerase-I inhibitors due to its prolonged circulating half-life, tolerability and passive tumour accumulation. PATIENTS AND METHODS: This was a non-randomised, multi-centre, two-step Fleming design phase II study. Eligible patients with locally advanced (inoperable) or metastatic gastric or gastro-oesophageal adenocarcinoma, with measurable disease, ECOG performance status < or =2, with adequate haematological, renal and hepatic function, who had received < or =1 prior chemotherapy regimen for advanced disease, were treated with 7,000 mg/m(2) of pegamotecan as a 1-h infusion every 21 days until disease progression or unacceptable toxicity. The primary efficacy measure was the objective response rate. RESULTS: Five of the 35 patients recruited into this study had a partial response (14.3%), with a median time to progression of 11.9 weeks (95% CI: 6.6, 13.1), and median overall survival of 38.1 weeks (95% CI: 29.0, 47.3). Grade 3/4 toxicities included neutropenia in 6 (17.1%) patients, thrombocytopenia in 4 (11.4%), fatigue in 8 (22.9%), nausea in 6 (17%), vomiting in 6 (17%) and anorexia in 4 (11.4%) patients. There were no episodes of febrile neutropenia and no toxic deaths. CONCLUSIONS: Pegamotecan has activity in this patient population and was generally well-tolerated. The favourable rate of haematological toxicities and diarrhoea compared with irinotecan in similar studies suggests that pegamotecan could be combined with other active agents in further studies in this disease.


Assuntos
Adenocarcinoma/tratamento farmacológico , Antineoplásicos Fitogênicos/uso terapêutico , Camptotecina/análogos & derivados , Junção Esofagogástrica/patologia , Polietilenoglicóis/uso terapêutico , Neoplasias Gástricas/tratamento farmacológico , Adenocarcinoma/patologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Antineoplásicos Fitogênicos/administração & dosagem , Antineoplásicos Fitogênicos/efeitos adversos , Camptotecina/administração & dosagem , Camptotecina/efeitos adversos , Camptotecina/uso terapêutico , Esquema de Medicação , Feminino , Humanos , Infusões Intravenosas , Masculino , Pessoa de Meia-Idade , Invasividade Neoplásica , Metástase Neoplásica , Estadiamento de Neoplasias , Polietilenoglicóis/administração & dosagem , Polietilenoglicóis/efeitos adversos , Qualidade de Vida , Neoplasias Gástricas/patologia , Resultado do Tratamento
6.
Dig Dis Sci ; 53(9): 2556-63, 2008 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-18231857

RESUMO

PURPOSE: To identify changes in hepatic parenchymal volume, fibrosis, and induction of portal hypertension following radioembolization with glass microspheres for patients with metastatic disease to the liver. RESULTS: In our series of sequential bilobar (n = 17) treatments, a mean decrease in liver volume of 11.8% was noted. In this group, a mean splenic volume increase of 27.9% and portal vein diameter increase of 4.8% were noted. For patients receiving unilobar treatments (n = 15), mean ipsilateral lobar volume decrease of 8.9%, contralateral lobar hypertrophy of 21.2%, and a 5.4% increase in portal vein diameter were also noted. These findings were not associated with clinical toxicities. CONCLUSION: (90)Yttrium radioembolization utilizing glass microspheres in patients with liver metastases results in changes of hepatic parenchymal volume and also induced findings suggestive of fibrosis and portal hypertension. Further studies assessing the long-term effects are warranted.


Assuntos
Hipertensão Portal/etiologia , Cirrose Hepática/etiologia , Neoplasias Hepáticas/radioterapia , Neoplasias Hepáticas/secundário , Fígado/crescimento & desenvolvimento , Lesões por Radiação/etiologia , Radioterapia/efeitos adversos , Progressão da Doença , Relação Dose-Resposta à Radiação , Embolização Terapêutica/efeitos adversos , Embolização Terapêutica/métodos , Feminino , Humanos , Fígado/patologia , Fígado/efeitos da radiação , Neoplasias Hepáticas/patologia , Masculino , Microesferas , Tamanho do Órgão/efeitos da radiação , Radioterapia/métodos , Resultado do Tratamento , Radioisótopos de Ítrio/efeitos adversos , Radioisótopos de Ítrio/uso terapêutico
7.
Exp Parasitol ; 115(4): 359-68, 2007 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-17118355

RESUMO

Bonamia ostreae is a protistan parasite of the European flat oyster, Ostrea edulis. Though direct transmission of the parasite can occur between oysters, it is unclear if this represents the complete life cycle of the parasite, and the role of a secondary or intermediate host or carrier species cannot be ruled out. In this preliminary study, benthic macroinvertebrates and zooplankton from a B. ostreae-endemic area were screened for the presence of parasite DNA, using polymerase chain reaction (PCR). Eight benthic macroinvertebrates and nineteen grouped zooplankton samples gave positive results. Certain species, found positive for the parasite DNA, were then used in laboratory transmission trials, to investigate if they could infect naïve oysters. Transmission of B. ostreae was effected to two naïve oysters cohabiting with the brittle star, Ophiothrix fragilis.


Assuntos
Sedimentos Geológicos/parasitologia , Haplosporídios/crescimento & desenvolvimento , Invertebrados/parasitologia , Estágios do Ciclo de Vida , Ostreidae/parasitologia , Zooplâncton/parasitologia , Animais , DNA de Protozoário/análise , Haplosporídios/genética , Haplosporídios/isolamento & purificação , Reação em Cadeia da Polimerase , Estações do Ano , Estrelas-do-Mar/parasitologia
8.
J Fish Dis ; 29(8): 455-65, 2006 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-16911533

RESUMO

A study of microfauna, associated with pathological changes in the gills of Atlantic salmon, Salmo salar L., was conducted over 2001-2002. Monthly samples of 1(+) salmon smolts were taken, protozoan populations were quantified and gill health was assessed histologically. Protozoan densities were correlated with pathological changes, in order to determine their possible role in lesions in the gills. The most severe gill tissue changes were observed in summer/autumn and the least in spring. A diverse polyphyletic protozoan community was observed colonizing the gills, including Neoparamoeba sp., other amoebae, scuticociliates, Ichthyobodo-like flagellates, trichodinid ciliates and prostomatean ciliates. The earlier gill tissue changes in the gill were not always associated with the presence of these microorganisms, whereas amoebae (other than Neoparamoeba sp.), Ichthyobodo-like flagellates and trichodinid ciliates correlated with augmenting gill lesions. Neoparamoeba sp. was present, but its abundance did not correlate with the disease. This study suggests that a diversity of protozoans including Ichthyobodo-like flagellates, trichodinid ciliates and amoebae other than Neoparamoeba sp. are involved in the aetiology of amoebic gill disease in the Irish situation.


Assuntos
Amebíase/veterinária , Eucariotos/isolamento & purificação , Doenças dos Peixes/microbiologia , Doenças dos Peixes/patologia , Brânquias/microbiologia , Salmo salar , Amebíase/microbiologia , Amebíase/patologia , Animais , Aquicultura , Brânquias/patologia , Irlanda , Estações do Ano
9.
J Fish Dis ; 27(10): 555-71, 2004 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-15482421

RESUMO

A 2-year study was carried out on amoebic gill disease (AGD) involving monthly samples of 1+ Atlantic salmon, Salmo salar L., smolts, histological assessment of the gills and analysis of environmental data. Gill pathology was seen before amoebae could be detected microscopically. These changes in gill integrity were associated with marine environmental conditions, particularly elevated ammonium, nitrite and chlorophyll levels. The results suggest that the environmental changes predispose salmon to colonization by amoebae and ciliates. High densities of histophagous scuticociliates were observed in the gills during periods of advanced gill pathology. A number of different amoebae were observed in close association with gill pathology. Neoparamoeba was not seen in high densities, nor was it associated with gill pathology, indicating that Neoparamoeba may not be the primary agent of the AGD in Irish salmonid culture.


Assuntos
Amebíase/veterinária , Meio Ambiente , Doenças dos Peixes/patologia , Doenças dos Peixes/parasitologia , Lobosea , Infecções Protozoárias em Animais , Amebíase/patologia , Animais , Clorofila/análise , Imunofluorescência/veterinária , Brânquias/parasitologia , Brânquias/patologia , Técnicas Histológicas/veterinária , Irlanda , Nitratos/análise , Nitritos/análise , Fosfatos/análise , Infecções por Protozoários/patologia , Compostos de Amônio Quaternário/análise , Fatores de Risco , Salmo salar , Água do Mar/análise , Temperatura
10.
Dis Aquat Organ ; 54(3): 229-41, 2003 Apr 24.
Artigo em Inglês | MEDLINE | ID: mdl-12803387

RESUMO

In this study, the small subunit (18S) ribosomal DNA gene from an aurantiactinomyxon form of unknown taxonomic position (A1) and from its aquatic oligochaete host (Tubifex ignotus) were characterized. Molecular sequence information on A1 was obtained to allow comparisons of this gene with known sequences from known myxosporean forms, and therefore to investigate possible relationships between this organism and its alternate myxosporean stage. Sequence data for the oligochaete host, together with morphological features, will allow reliable identification of this species in the future. Sequence data derived from the 18S DNA gene and data from other related or non-related organisms were analyzed and used to construct a phylogenetic tree. Phylogenetic studies provided an insight into the taxonomic position of A1. Sequence similarities within the 18S rDNA A1 gene and compared organisms indicated that A1 was most closely related to members of the sub-order Variisporina (Myxidium lieberkuehni [Ml] and Sphaerospora oncorhynchi [So]). Clustering of the 3 organisms in the same branch was well supported by high bootstrap values (81%). A1 showed higher similarities with sequences of Ml (approximately 80%) than with So (approximately 79%). Myxosporean sequence analysis indicated that phylogenetic arrangements do not support traditional classification based on morphological criteria of the spores, but rather support arrangement by tissue location. Marine actinosporeans Triactinomyxon sp. and Tetraspora discoidea were found to be associated with Platysporinid myxosporeans, supporting previous findings. In this study, 18S rDNA sequence data are generated for first time for the aquatic oligochaete T. ignotus. Phylogenetic 18S rDNA gene analyses performed with T. ignotus support and confirm existing morphological and molecular phylogenetic studies. Paraphyly of the Tubificidae family was noticed.


Assuntos
DNA de Protozoário/química , DNA Ribossômico/química , Eucariotos/classificação , Eucariotos/genética , Oligoquetos/parasitologia , Animais , Sequência de Bases , Análise por Conglomerados , DNA de Protozoário/análise , DNA de Protozoário/genética , DNA Ribossômico/análise , DNA Ribossômico/genética , Dados de Sequência Molecular , Oligoquetos/genética , Filogenia , RNA Ribossômico 18S/genética , Alinhamento de Sequência , Homologia de Sequência do Ácido Nucleico , Esporos de Protozoários
12.
Fish Shellfish Immunol ; 11(7): 611-22, 2001 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11592588

RESUMO

Lysozyme activity and protein concentration in the haemolymph of the flat oyster Ostrea edulis were investigated. These biochemical constituents of the haemolymph could be an indication of the physiological condition and vitality of the defence system of an animal. Haemolymph protein and lysozyme in oysters were examined over an 18 month period to determine their relationship with the strain of oyster, the season, the site, and parasitism by Bonamia ostreae. Haemolymph protein concentration exhibited seasonal fluctuations and varied between strains. Levels of protein in oysters highly infected with B. ostreae were slightly depressed but not significantly so. Haemolymph lysozyme varied greatly between individuals but no correlation was found between lysozyme levels and infection of oysters by B. ostreae.


Assuntos
Hemolinfa/enzimologia , Muramidase/metabolismo , Ostreidae/enzimologia , Proteínas/análise , Animais , Eucariotos/isolamento & purificação , Eucariotos/fisiologia , Hemolinfa/metabolismo , Ostreidae/química , Ostreidae/parasitologia , Estações do Ano
13.
Dis Aquat Organ ; 46(1): 67-77, 2001 Aug 22.
Artigo em Inglês | MEDLINE | ID: mdl-11592704

RESUMO

Sediment samples were collected in April, June and August 1998 from a river in southwest Ireland. A total of 1,836 oligochaete specimens were collected from these sediments, and examined for actinosporean infections. Actinosporean-infected oligochaetes have been determined, symptoms and course of infection have been considered and the spores released from them have been described. Spore characteristics for each actinosporean were defined and the prevalence of infection in each oligochaete species was also determined. The overall prevalence of infection with actinosporeans within the oligochaete sample was approximately 2%. Seven types were distinguished, belonging to echinactinomyxon, aurantiactinomyxon and neoactinomyxum forms, from Tubifex ignotus, Lumbriculus variegatus and Limnodrilus hoffmeisteri, and compared with actinosporean types previously reported in the literature. Three of these forms have not been previously described, while the other 4 are morphologically and morphometrically similar to known forms. These actinosporeans may be stages in myxozoan life cycles.


Assuntos
Eucariotos/isolamento & purificação , Oligoquetos/parasitologia , Animais , Eucariotos/classificação , Eucariotos/fisiologia , Água Doce , Sedimentos Geológicos , Irlanda/epidemiologia , Prevalência
14.
Dis Aquat Organ ; 47(2): 145-9, 2001 Nov 08.
Artigo em Inglês | MEDLINE | ID: mdl-11775796

RESUMO

Infections of a population of Crassostrea gigas by the copepod Mytilicola orientalis were examined at an oyster growing site at Dungarvan, County Waterford, Ireland. Twenty-one samples, each consisting of 20 to 30 oysters have been examined over 2 yr. Condition, sex, reproductive stage, length, weight, glycogen content and other parasite burdens of the oysters were examined in relation to the degree of infection of M. orientalis; 14.38% of oysters were infested. Mean abundance was 0.6 oyster(-1) The maximum number of copepods in an oyster was 20. M. orientalis had no effect on condition, growth, sex, stage or glycogen content of the oyster but correlated with shell burrowing by Polydora sp.


Assuntos
Crustáceos/fisiologia , Ostreidae/parasitologia , Frutos do Mar/parasitologia , Animais , Crustáceos/crescimento & desenvolvimento , Feminino , Glicogênio/análise , Irlanda , Masculino , Ostreidae/crescimento & desenvolvimento
15.
Curr Oncol Rep ; 1(2): 168-72, 1999.
Artigo em Inglês | MEDLINE | ID: mdl-11122815

RESUMO

Carcinoembryonic antigen (CEA) is an important tool in the management of colorectal cancer. Its use as a prognostic indicator in resectable disease remains controversial but may be improved with molecular detection of the antigen. In monitoring patients after resection, CEA can be the first sign of a potentially curable recurrence. It can also be useful in assessing tumor response in patients being treated for metastases without easily measurable disease. CEA alone cannot dictate the type or duration of treatment but may be used in addition to standard monitoring tests.


Assuntos
Biomarcadores Tumorais/sangue , Antígeno Carcinoembrionário/sangue , Neoplasias Colorretais/diagnóstico , Neoplasias Colorretais/prevenção & controle , Neoplasias Colorretais/terapia , Guias como Assunto , Humanos , Programas de Rastreamento/métodos , Assistência Perioperatória , Prognóstico
16.
Eur J Obstet Gynecol Reprod Biol ; 63(1): 75-9, 1995 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-8674571

RESUMO

Sperm-bound antisperm antibody levels were measured in 10 males in subfertile partnerships who were treated with high dose intermittent prednisolone therapy over a period up to 9 months. Antibody levels fell in all patients during therapy, although a transient rise occurred after 2-4 months. There were low treatment complication rates. Four pregnancies occurred during the treatment of the 10 patients. There was no correlation between pregnancy and change in antibody.


Assuntos
Autoanticorpos/metabolismo , Infertilidade Masculina/tratamento farmacológico , Infertilidade Masculina/imunologia , Prednisona/uso terapêutico , Espermatozoides/imunologia , Adulto , Autoanticorpos/análise , Feminino , Humanos , Imunoglobulina A/análise , Imunoglobulina A/metabolismo , Imunoglobulina G/análise , Imunoglobulina G/metabolismo , Imunoglobulina M/análise , Imunoglobulina M/metabolismo , Masculino , Prednisona/administração & dosagem , Gravidez , Contagem de Espermatozoides , Motilidade dos Espermatozoides
17.
Leukemia ; 6 Suppl 3: 147S-149S, 1992.
Artigo em Inglês | MEDLINE | ID: mdl-1602813

RESUMO

The major research themes in poikilotherm leukaemias, and their progress over the past two years are reviewed. Despite the fact that poikilotherms represent 99% of the animal world including man, background knowledge on most poikilotherm species is sparse. Furthermore, haemic systems in many poikilotherms have functions different to those of homeotherms. Most progress is being made in relation to lethal blood mutant neoplasms in Drosophila, leukaemias of farmed salmonids among the fishes, and among shellfish, the hemic sarcomas of bivalves. The hypothesis that epizootic neoplasia in fish and shellfish populations could be indicative of environmental pollution is being refined in the light of recent studies; environmental xenobiotics are no longer considered to play a primary aetiological role in either lymphomas and leukaemias of fish or haemic sarcomas of bivalves, although xenobiotics may have a primary role in other poikilotherm neoplasms.


Assuntos
Drosophila melanogaster , Doenças dos Peixes/etiologia , Leucemia/etiologia , Moluscos , Animais , Peixes , Pesquisa , Frutos do Mar , Poluição Química da Água/efeitos adversos
20.
Med J Aust ; 1(13): 693-8, 1981 Jun 27.
Artigo em Inglês | MEDLINE | ID: mdl-7278753

RESUMO

After a brief exposition of the structure and constituents of the atmosphere, this review paper discusses the nature of the criteria by which a particular material present as the result of human activity is to be regarded as a pollutant. The pollutants or potential pollutants likely to be found in urban air are noted, and the procedures for setting air-quality standards are outlined by way of two examples, ozone and lead. The provisional character of air-quality standard is emphasized. Special attention is given to photochemical smog as being a form of air pollution endemic to urbanized countries with warm climates like that of Australia. The characteristics of photochemical smog are discussed, and figures are presented to illustrate its prevalence in several Australian cities over the past few years. Finally, reference is made to research on the role of hydrocarbon emissions in the formation of smog conducted by the writer and his colleagues in the Commonwealth Scientific and Industrial Research Organization (CSIRO).


Assuntos
Poluentes Atmosféricos/análise , Atmosfera , Austrália , Chumbo/normas , Ozônio/normas , Smog/análise
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