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1.
Leukemia ; 10(1): 159-66, 1996 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-8558922

RESUMO

The phenotypic and biologic properties of malignant cells in a case of aggressive mastocytosis with multi-organ involvement, circulating mast cell precursors and absence of skin infiltrates were analyzed. Circulating mast cell precursors were detected by immunostaining using antibodies against mast cell tryptase as well as by electron microscopy. These progenitors were tryptase+/chymase- (MCT) and accounted for 10 to 20% of nucleated mononuclear blood cells (MNC). A subset of them contained metachromatic granules. As assessed by combined toluidine blue/immunofluorescence staining, the granulated mast cell precursors were found to express CD9 (P24), CD33 (gp67) and CD44 (Pgp-1), but not basophil-related markers (CD11b (C3biR), CDw17 (lactosylceramide), CD123 (il-3R alpha))or monocyte-related antigens (CD14, CD15). Expression of the mast cell growth factor (MGF) receptor, c-kit(CD117), was also demonstrable, whereas the skin mast cell marker C5aR (CD88) could not be detected on mast cell precursors. The ligand of c-kit, recombinant human (rh) stem cell factor (SCF = MGF), induced histamine release from circulating mast cell progenitors, whereas rhC5a, a potent skin mast cell-/basophil-agonist, was ineffective over the dose-range (10(-9) to 10(-7(M)) tested. Analysis of mast cell antigens in malignant mastocytosis or mast cell leukemias may be helpful to establish a diagnosis and to determine the phenotype of the clone.


Assuntos
Células-Tronco Hematopoéticas/patologia , Mastócitos/patologia , Sarcoma de Mastócitos/patologia , Células-Tronco Neoplásicas/patologia , Adulto , Quimases , Grânulos Citoplasmáticos/patologia , Células-Tronco Hematopoéticas/imunologia , Células-Tronco Hematopoéticas/metabolismo , Liberação de Histamina , Humanos , Imuno-Histoquímica , Imunofenotipagem , Masculino , Mastócitos/imunologia , Mastócitos/metabolismo , Sarcoma de Mastócitos/sangue , Sarcoma de Mastócitos/imunologia , Microscopia Eletrônica , Células-Tronco Neoplásicas/imunologia , Células-Tronco Neoplásicas/metabolismo , Proteínas Proto-Oncogênicas c-kit/metabolismo , Serina Endopeptidases/metabolismo , Fator de Células-Tronco/metabolismo , Fator de Células-Tronco/farmacologia , Triptases
2.
J Leukoc Biol ; 61(5): 592-9, 1997 May.
Artigo em Inglês | MEDLINE | ID: mdl-9129208

RESUMO

Mast cells (MC) are proinflammatory immune cells residing in various organs. Tissue-specific heterogeneity of MC has been described. The aim of this study was to establish the phenotype and functional profile of human tonsillar mast cells (ToMC) and to compare ToMC with lung-, skin-, and uterus MC. Tonsillar tissue was obtained from 23 patients suffering from hyperplastic tonsils and dispersed by enzymatic digestion. With the use of a combined toluidine blue/immunofluorescence staining technique, isolated ToMC were found to react with monoclonal antibodies (mAb) to immunoglobulin E, CD9, CD43, CD44, CD46, CD54, CD55, and CD59, as well as mAb to stem cell factor (SCF) receptor (CD117/c-kit). ToMC were not recognized by mAb to other cytokine receptors or mAb to CD3, CD11b, CD14, CDw17, the skin MC marker CD88 (C5aR) or CD89 (Fc alphaR). Activation of ToMC by recombinant human (rh) SCF or anti-IgE resulted in histamine secretion, whereas no effects were seen with rhC5a, rh granulocyte-macrophage colony-stimulating factor, or rh interleukin-1 through -10. In summary, ToMC exhibit functional and phenotypic properties similar to lung- or uterus MC. Unlike skin MC, ToMC lack C5aR and are unresponsive to rhC5a.


Assuntos
Mastócitos/fisiologia , Tonsila Palatina/citologia , Antígenos de Superfície/análise , Moléculas de Adesão Celular/análise , Feminino , Humanos , Hiperplasia , Imunofenotipagem , Pulmão/citologia , Mastócitos/citologia , Mastócitos/imunologia , Tonsila Palatina/imunologia , Tonsila Palatina/patologia , Receptores de Citocinas/análise , Receptores Imunológicos/análise , Receptores Virais/análise , Pele/citologia , Útero/citologia
3.
Arch Intern Med ; 160(10): 1529-35, 2000 May 22.
Artigo em Inglês | MEDLINE | ID: mdl-10826469

RESUMO

BACKGROUND: Pulmonary embolism (PE) is a possible noncardiac cause of cardiac arrest. Mortality is very high, and often diagnosis is established only by autopsy. METHODS: In a retrospective study, we analyzed clinical presentation, diagnosis, therapy, and outcome of patients with cardiac arrest after PE admitted to the emergency department of an urban tertiary care hospital. RESULTS: Within 8 years, PE was found as the cause in 60 (4.8%) of 1246 cardiac arrest victims. The initial rhythm diagnosis was pulseless electrical activity in 38 (63%), asystole in 19 (32%), and ventricular fibrillation in 3 (5%) of the patients. Pronounced metabolic acidosis (median pH, 6.95, and lactate level, 16 mmol/L) was found in most patients. In 18 patients (30%), the diagnosis of PE was established only postmortem. In 42 (70%) it was diagnosed clinically, in 24 of them the diagnosis of PE was confirmed by echocardiography. In 21 patients, 100 mg of recombinant tissue-type plasminogen activator was administered as thrombolytic treatment, and 2 (10%) of these patients survived to hospital discharge. Comparison of patients of the thrombolysis group (n = 21) with those of the nonthrombolysis group (n = 21) showed a significantly higher rate of return of spontaneous circulation (81% vs 43%) in the thrombolysis group (P=.03). CONCLUSIONS: Mortality related to cardiac arrest caused by PE is high. Echocardiography is supportive in determining PE as the cause of cardiac arrest. In view of the poor prognosis, thrombolysis should be attempted to achieve return of spontaneous circulation and probably better outcome.


Assuntos
Parada Cardíaca/etiologia , Embolia Pulmonar/complicações , Idoso , Áustria , Causas de Morte , Ecocardiografia , Serviço Hospitalar de Emergência , Feminino , Parada Cardíaca/diagnóstico , Parada Cardíaca/mortalidade , Humanos , Masculino , Pessoa de Meia-Idade , Embolia Pulmonar/diagnóstico , Embolia Pulmonar/mortalidade , Ressuscitação , Estudos Retrospectivos , Taxa de Sobrevida , Terapia Trombolítica
4.
Exp Hematol ; 26(2): 158-69, 1998 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-9472805

RESUMO

Mast cells (MCs) originate from multipotent hematopoietic progenitor cells. However, MCs in various organs are heterogenous in terms of mediator or receptor expression and response to diverse stimuli. We characterized the phenotype and functional properties of human renal mast cells (HRMCs). Tissue was obtained from 17 patients suffering from renal tumors (transitional cell carcinoma, n = 4; renal cell carcinoma, n = 13). HRMCs were isolated by collagenase digestion. Double staining with toluidine blue and immunofluorescence using monoclonal antibodies (mAbs) revealed expression of stem cell factor (SCF)-receptor (c-kit/CD117), CD9, CD29, CD33, CD43, CD44, CD54, and CD63 on HRMCs. In contrast, HRMCs were not recognized by mAbs to CD2, CD3, CD4, CD11b, CD14, CD15, CD16, CDw17, CD19, or CD23. HRMCs were also negative for CD116 (granulocyte-macrophage colony-stimulating factor [GM-CSF] receptor alpha), CD123 (interleukin [IL]-3Ralpha), CD121a (IL-1R type I), CD122 (IL-2Rbeta), and CD127 (IL-7R) and were also found to lack C5aR (CD88). Ligand-induced activation of HRMCs through immunoglobulin (Ig)E-R or SCF-R (c-kit) resulted in histamine secretion (control: <10%; alphaIgE, 1 microg/mL: 50.12 +/-5.18%; rhSCF, 100 ng/mL: 29.24 +/- 22.39), whereas recombinant C5a, erythropoietin (EPO), IL-1 through 10, and GM-CSF exerted no effects. As determined by in situ staining, HRMCs contained tryptase, but only low or undetectable amounts of chymase. Electron microscopy confirmed the presence of MCs in renal tissues and revealed a scroll-rich granule population in HRMCs. Together, HRMCs are tryptase+, C5aR- mast cells exhibiting phenotypic and functional properties similar to those of lung MCs.


Assuntos
Antígenos CD/análise , Carcinoma de Células Renais/imunologia , Carcinoma de Células de Transição/imunologia , Neoplasias Renais/imunologia , Mastócitos/imunologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Anticorpos Monoclonais , Carcinoma de Células Renais/patologia , Carcinoma de Células de Transição/patologia , Quimases , Feminino , Histamina/análise , Liberação de Histamina , Humanos , Imunofenotipagem , Rim/citologia , Rim/imunologia , Rim/patologia , Neoplasias Renais/patologia , Masculino , Mastócitos/patologia , Mastócitos/ultraestrutura , Pessoa de Meia-Idade , Valores de Referência , Serina Endopeptidases/análise , Triptases
5.
Exp Hematol ; 24(12): 1377-86, 1996 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-8913283

RESUMO

Recent data suggest that local overexpression of the tissue-hormone c-kit ligand (stem cell factor [SCF]) is associated with accumulation of mast cells (MCs) and a decrease in expression of c-kit in the accumulated MCs [28]. In the present study, the effects of recombinant human (rh) SCF on expression of c-kit mRNA and c-kit protein in isolated human MCs and a human mast cell line, HMC-1, were analyzed. Incubation of isolated lung MC with rhSCF (100 ng/mL) for 120 minutes resulted in decreased expression of c-kit mRNA (optical density [OD], control: 100% vs. rhSCF: 37%). Almost identical results were obtained with HMC-1 cells (OD, control: 100% vs. rhSCF: 40 to 45%). As assessed by flow cytometry and monoclonal antibodies (mAbs) to c-kit, the SCF-induced decrease of c-kit mRNA in HMC-1 was associated with a substantial decrease in surface expression of c-kit (MFI, control: 100 +/- 21%, vs. MFI in cells incubated with rhSCF [100 ng/mL at 37 degrees C for 12 hours]: 8 +/- 2%, vs. MFI in cells incubated with rhSCF, 100 ng/mL, at 4 degrees C: 34 +/- 3%). The effects of rhSCF on c-kit expression in HMC-1 cells were dose- and time-dependent with maximum effects observed with 10-100 ng/mL of rhSCF after 4 to 12 hours. The SCF-dependent loss of c-kit was also accompanied by a decreased chemotactic response to rhSCF (control: 100%; rhSCF: 71 +/- 2%). This study shows that exposure of human lung MC and HMC-1 cells to recombinant SCF results in downregulation of c-kit mRNA and surface c-kit expression. These data may explain the partial loss of c-kit on MCs in areas of SCF overexpression.


Assuntos
Pulmão/citologia , Mastócitos/citologia , Proteínas Proto-Oncogênicas c-kit/fisiologia , Fator de Células-Tronco/farmacologia , Northern Blotting , Linhagem Celular , Quimiotaxia/efeitos dos fármacos , Regulação para Baixo , Humanos , Técnicas Imunoenzimáticas , Mastócitos/química , Proteínas de Membrana/biossíntese , Sondas de Oligonucleotídeos/análise , Proteínas Proto-Oncogênicas c-kit/genética , RNA Mensageiro/metabolismo , Proteínas Recombinantes/genética , Proteínas Recombinantes/farmacologia
6.
J Immunol Methods ; 182(1): 115-29, 1995 May 11.
Artigo em Inglês | MEDLINE | ID: mdl-7539467

RESUMO

Basophils and mast cells represent distinct cell lineages within the hemopoietic system. Based on the unique cell surface antigen profile of both cells, we have established methods which allow the reproducible purification to homogeneity (> 99%) of normal human basophil granulocytes from the peripheral blood and of mast cells from human dispersed tissues. Basophils (n = 9) were purified by current counterflow elutriation followed by depletion of monocytes with CD14 mAb conjugated to magnetic beads, and subsequent cell sorting for CD217+ cells. Basophil purity was 99.5 +/- 0.4% (range 98.7-99.9%). Mast cells were obtained from lung (n = 6), uterus (n = 1), mastocytosis bone marrow (n = 2), and human foreskin (n = 2). Mast cells were purified by collagenase digestion followed by current counterflow elutriation and sorting with CD117/c-kit mAb. Mast cell purity was 99.4 +/- 0.7% (range: 97.5-99.9%). Purified cells were more than 90% viable and were able to release histamine on induction with IgE plus anti-IgE. Furthermore, the PCR technique could be applied on pure cells and confirmed expression of high affinity IgE receptor (Fc epsilon R1) alpha chain mRNA. Thus, by combining isolation techniques including elutriation, magnetic cell depletion and cell sorting with mAb, functionally intact normal human basophils and mast cells can be enriched to homogeneity.


Assuntos
Antígenos CD/imunologia , Basófilos/imunologia , Separação Celular/métodos , Mastócitos/imunologia , Anticorpos Monoclonais/imunologia , Sequência de Bases , Basófilos/citologia , Células Cultivadas , Citometria de Fluxo , Liberação de Histamina , Humanos , Imunoglobulina E/imunologia , Mastócitos/citologia , Dados de Sequência Molecular , Reação em Cadeia da Polimerase , Proteínas Proto-Oncogênicas/imunologia , Proteínas Proto-Oncogênicas c-kit , Receptores Proteína Tirosina Quinases/imunologia , Receptores de Fator Estimulador de Colônias/imunologia , Receptores de IgE/genética , Ultracentrifugação/métodos
7.
Thromb Haemost ; 87(5): 786-90, 2002 May.
Artigo em Inglês | MEDLINE | ID: mdl-12038777

RESUMO

Venous thromboembolism represents a significant cause of morbidity worldwide. The factors that underly thrombophilia are manifold. The concept of Virchow defines the well known triad of stasis, humoral factors, and pathologies of the vascular wall. In the current article, an additional factor, the "accumulation of repair cells" is discussed. This novel concept highlights the mast cell that accumulates around thrombosed vessels and provides a number of important repair molecules including heparin, profibrinolytic tPA, and fibrinogenolytic beta-tryptase. Thus, mast cell recruitment and activation may result in local thrombolysis and prevention of coagulation. In line with this concept, mast cell-deficient mice are more susceptible to lethal thrombogenic stimuli compared to normal mice. The factors (cytokines) that trigger mast cell accumulation and release of repair molecules have also been identified - the most important one appears to be stem cell factor (SCF). All in all. our novel concept suggests that the patho-physiology of thrombosis may involve a "physiologic" cell that provides the same repair molecules that are used for treatment of thrombotic disorders by the physician. Whether an altered availability of components of this cellular repair system can predispose for thrombophilia remains to be determined.


Assuntos
Fibrinólise , Mastócitos/fisiologia , Trombose/fisiopatologia , Animais , Heparina/metabolismo , Humanos , Camundongos , Camundongos Mutantes , Modelos Biológicos , Proteínas Proto-Oncogênicas c-kit/fisiologia , Serina Endopeptidases/metabolismo , Fator de Células-Tronco/fisiologia , Trombose/etiologia , Ativador de Plasminogênio Tecidual/metabolismo , Triptases
8.
Hum Pathol ; 30(2): 188-94, 1999 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-10029447

RESUMO

A number of recent data suggest that mast cells (MC) and their products are involved in the pathophysiology of thrombosis. In the current study, we have evaluated the number, distribution, and phenotype of MC in patients with deep vein thrombosis of the lower limb (DVT) (n = 15). Contralateral nonthrombosed limb veins served as control (CO). MC were examined by Giemsa staining and by immunohistochemistry using antibodies against tryptase, chymase, tissue-type plasminogen activator (tPA), urokinase (uPA), urokinase receptor (uPAR), and plasminogen activator inhibitors (PAI-1, PAI-2). We found an increase in the number of tryptase-positive MC in DVT compared with CO (DVT: 9.1+/-1.0 v CO: 4.7+/-0.6 MC/mm2, P < .05). Most of these MC appeared to accumulate in the adventitia of the thrombosed veins, in vicinity of the vasa vasorum. In both DVT and CO, MC reacted with monoclonal antibodies to c-kit, tryptase, and chymase. MC also stained positive for tPA and urokinase receptor, but did not express detectable PAI-1 or PAI-2. As compared with CO, a decreased proportion of MC in DVT was found to stain positive for chymase and tPA. Together, our results show that MC increase in number in DVT and express a profibrinolytic phenotype. We hypothesize that MC and MC-derived profibrinolytic molecules play a role in the pathophysiology of DVT.


Assuntos
Mastócitos/citologia , Veias/imunologia , Trombose Venosa/imunologia , Idoso , Idoso de 80 Anos ou mais , Antígenos CD/metabolismo , Quimases , Feminino , Humanos , Técnicas Imunoenzimáticas , Masculino , Mastócitos/enzimologia , Mastócitos/metabolismo , Pessoa de Meia-Idade , Fenótipo , Ativadores de Plasminogênio/metabolismo , Inativadores de Plasminogênio/metabolismo , Proteínas Proto-Oncogênicas c-kit/metabolismo , Serina Endopeptidases/metabolismo
9.
Hum Pathol ; 28(11): 1283-90, 1997 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-9385934

RESUMO

Recent data suggest that auricular thrombosis is associated with an increase and accumulation of mast cells (MC) in the subendothelial region of the upper endocardium. However, the molecular basis and the functional role of MC in this process are not known. In the current study, expression of fibrinolytic and antifibrinolytic antigens in human cardiac MC was analyzed by immunohistochemistry. MC were found to react with antibodies against tissue-type plasminogen activator (tPA) and urokinase receptor (uPAR/CD87), but not with antibodies against urokinase (uPA) or plasminogen activator inhibitors (PAI-1, PAI-2). Significant changes were observed when the phenotype of accumulated MC in the upper endocardium in patients with auricular thrombosis was compared with the phenotype of myocardial MC in the same patients or with MC in normal hearts. These redistributed MC stained less intensely with antibodies against tPA and chymase but retained their staining for tryptase and uPAR. Together, these data indicate that cardiac MC are a source of fibrinolytic antigens and that accumulation of MC in auricular thrombosis is associated with phenotypic changes of MC and loss of cellular tPA. It is hypothesized that MC and their products may play a role in endogenous fibrinolysis in auricular thrombosis.


Assuntos
Fibrinolíticos/metabolismo , Átrios do Coração/imunologia , Mastócitos/metabolismo , Antifibrinolíticos/metabolismo , Células Cultivadas , Quimases , Endocárdio/metabolismo , Átrios do Coração/efeitos dos fármacos , Átrios do Coração/metabolismo , Heparina/metabolismo , Humanos , Imuno-Histoquímica , Hibridização In Situ , Mitógenos/metabolismo , Miocárdio/imunologia , Miocárdio/metabolismo , Inibidor 1 de Ativador de Plasminogênio/metabolismo , Ativadores de Plasminogênio/metabolismo , Receptores de Superfície Celular/metabolismo , Receptores de Citocinas/metabolismo , Receptores de Ativador de Plasminogênio Tipo Uroquinase , Serina Endopeptidases/metabolismo , Fator de Células-Tronco/metabolismo , Fator de Células-Tronco/farmacologia , Trombose , Ativador de Plasminogênio Tecidual/metabolismo , Triptases , Ativador de Plasminogênio Tipo Uroquinase/metabolismo
10.
Bone Marrow Transplant ; 21(12): 1275-7, 1998 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-9674864

RESUMO

A 52-year-old female underwent autologous BMT because of acute myeloid leukaemia FAB M4 in second remission. Since the patient had no HLA-identical sibling she received a purged autologous BM transplant. On day +5 she developed signs of a sepsis syndrome with fluid retention and was treated with broad-spectrum antibiotic therapy. However, her body weight remained high, ascites and an increase of total serum bilirubin and alkaline phosphatase developed. The icterus worsened to a total bilirubin level of 25 mg/100 ml. Sonographic and endoscopic imaging showed a dilated gall bladder but disclosed a post-hepatic cause for the icterus. A transjugular liver biopsy on day +71 revealed severe cholestasis and siderosis. The patient remained aplastic with constantly increased bilirubin levels. On day +73 septic shock syndrome occurred and the patient died of multiorgan failure 3 days later. At autopsy, a highly differentiated bile duct adenocarcinoma at the porta hepatis, so-called Klatskin tumour, was found, explaining the fatal course with intractable cholestasis.


Assuntos
Adenocarcinoma/diagnóstico , Neoplasias dos Ductos Biliares/diagnóstico , Transplante de Medula Óssea/efeitos adversos , Hepatopatia Veno-Oclusiva/diagnóstico , Leucemia Mieloide Aguda/terapia , Feminino , Humanos , Pessoa de Meia-Idade , Transplante Autólogo
11.
Am J Clin Pathol ; 116(1): 97-106, 2001 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-11447759

RESUMO

Recent data suggest that mast cells (MCs) and their products are involved in the pathophysiology of thrombosis. In the present study, we analyzed the number, distribution, and phenotype of prostate MCs and periprostatic MCs in patients with unilateral periprostatic vein thrombosis (PVT) by immunohistochemical analysis and electron microscopy. MCs reacted with monoclonal antibodies to tryptase, chymase, and c-kit/CD117 and stained positively for tissue-type plasminogen activator (tPA) and urokinase receptor (uPAR/CD87) but did not express detectable urokinase (uPA) or plasminogen activator inhibitors (PAI-1, PAI-2). We found an increase in the mean +/- SEM number of MCs in PVT compared with control (PVT, 14.36 +/- 1.57 vs control, 5.23 +/- 0.57/mm2). The majority of MCs accumulated in the adventitia of thrombosed veins and showed a decrease in chymase expression. As MCs increase in number in PVT and express a profibrinolytic phenotype, we hypothesize that MC-derived molecules have a role in endogenous fibrinolysis.


Assuntos
Mastócitos/patologia , Próstata/irrigação sanguínea , Próstata/patologia , Trombose Venosa/patologia , Idoso , Idoso de 80 Anos ou mais , Áustria , Contagem de Células , Humanos , Incidência , Masculino , Mastócitos/fisiologia , Pessoa de Meia-Idade , Fenótipo , Próstata/fisiopatologia , Trombose Venosa/epidemiologia
12.
Leuk Lymphoma ; 22(3-4): 187-204, 1996 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-8819068

RESUMO

Mast cells and blood basophils are distinct hemopoietic cells. They can be distinguished from each other and from all other lymphohemopoietic cells using antibodies against surface receptors or stored cytoplasmic molecules. In patients with myelodysplastic syndromes (MDS) or myeloproliferative syndromes (MPS), an elevation of metachromatically granulated cells (MCS) is frequently seen. These cells can be classified as basophils or mast cells using monoclonal antibodies (mAbs) against leukocyte antigens, including mast cell tryptase, c-kit (= mast cell growth factor [MGF] receptor), interleukin-3 receptor alpha chain (IL-3R alpha = CD123), and CD11b (C3biR). In a stable phase of MDS or MPS, the circulating MCS usually are basophils (histamine+, tryptase-, c-kit-, IL-3R alpha +, CD11b+). In an accelerated or terminal phase of disease, however, mast cell lineage involvement and circulating mast cell precursors (histamine+, tryptase+, c-kit+, IL-3R alpha-, CD11b-) are found in a subset of patients. The use of mAbs against mast cell antigens and granulocyte antigens is diagnostic in these patients.


Assuntos
Basófilos/química , Mastócitos/química , Síndromes Mielodisplásicas/diagnóstico , Transtornos Mieloproliferativos/diagnóstico , Basófilos/citologia , Basófilos/imunologia , Humanos , Imunofenotipagem , Mastócitos/citologia , Mastócitos/imunologia , Síndromes Mielodisplásicas/patologia , Transtornos Mieloproliferativos/patologia
13.
Resuscitation ; 51(1): 27-32, 2001 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11719170

RESUMO

OBJECTIVE: Spontaneous subarachnoid haemorrhage as a cause of out-of-hospital cardiac arrest is poorly evaluated. We analyse disease-specific and emergency care data in order to improve the recognition of subarachnoid haemorrhage as a cause of cardiac arrest. DESIGN: We searched a registry of cardiac arrest patients admitted after primarily successful resuscitation to an emergency department retrospectively and analysed the records of subarachnoid haemorrhage patients for predictive features. RESULTS: Over 8.5 years, spontaneous subarachnoidal haemorrhage was identified as the immediate cause in 27 (4%) of 765 out-of-hospital cardiac arrests. Of these 27 patients, 24 (89%) presented with at least three or more of the following common features: female gender (63%), age under 40 years (44%), lack of co-morbidity (70%), headache prior to cardiac arrest (39%), asystole or pulseless electric activity as the initial cardiac rhythm (93%), and no recovery of brain stem reflexes (89%). In six patients (22%), an intraventricular drain was placed, one of them (4%) survived to hospital discharge with a favourable outcome. CONCLUSIONS: Subarachnoid haemorrhage complicated by cardiac arrest is almost always fatal even when a spontaneous circulation can be restored initially. This is due to the severity of brain damage. Subarachnoid haemorrhage may present in young patients without any previous medical history with cardiac arrest masking the diagnosis initially.


Assuntos
Parada Cardíaca/etiologia , Hemorragia Subaracnóidea/complicações , Adulto , Reanimação Cardiopulmonar , Serviços Médicos de Emergência , Feminino , Parada Cardíaca/mortalidade , Humanos , Masculino , Prognóstico , Sistema de Registros/estatística & dados numéricos , Estudos Retrospectivos , Taxa de Sobrevida
14.
Wien Klin Wochenschr ; 112(8): 368-71, 2000 Apr 21.
Artigo em Alemão | MEDLINE | ID: mdl-10849944

RESUMO

Rembrandt's painting 'The Anatomy Lesson' (1632) is revolutionary in its portrayal of members of the Anatomic Guild. It has an entirely new composition and vividly depicts the dynamics of the event and the interest of the participants. However, the structures of the dissected forearm have been taken from a copy and not from the original. The possibility of anatomic errors is discussed here. A short biography of Dr. Tulp is also included.


Assuntos
Anatomia Artística/história , Pessoas Famosas , Medicina nas Artes , Pinturas/história , História do Século XVII , Humanos , Países Baixos
15.
Wien Klin Wochenschr ; 113(23-24): 964-8, 2001 Dec 17.
Artigo em Alemão | MEDLINE | ID: mdl-11802515

RESUMO

Leopold Mozart (1719-1787), father of Wolfgang Amadé, had profound medical knowledge and was a passionate medical dilettante. As long as the young Mozart lived with his father and travelled on his concert tours with him, Leopold cared for his son in medical matters. Doctors were only consulted occasionally. In the extensive correspondence of Mozart's father drugs and treatments used for Wolfgang Amadé are reported in detail. This represents a reliable description of the pharmacological therapies of the late 18th century. The mentioned drugs are, as far as possible, viewed from todays medical perspective.


Assuntos
Correspondência como Assunto/história , Pessoas Famosas , Música/história , Fitoterapia/história , Áustria , História do Século XVIII , Humanos , Masculino
16.
Wien Klin Wochenschr ; 105(23): 677-81, 1993.
Artigo em Alemão | MEDLINE | ID: mdl-7508662

RESUMO

The clinical symptoms of allergy are caused by cellular (IgE-triggered) responses to an allergen. Effector cells of allergy include eosinophil and basophil granulocytes, as well as tissue mast cells. Growth and accumulation, as well as IgE-dependent and independent functions of these cells are regulated by distinct proteohormones and peptides. The hemopoietic cytokines IL-3 (interleukin-3), IL-5 and GM-CSF (granulocyte-macrophage colony-stimulating factor) are involved in the regulation of basophils (and eosinophils), whereas the ligand for c-kit, SCF (stem cell factor) is a mast cell-specific agonist. Basophils and mast cells express high-affinity IgE-binding sites. Allergen binding to IgE on mast cells and basophils, and consecutive cross-linking of IgE receptors is followed by production and/or secretion of inflammatory mediator substances. Specific activation and deactivation of mast cells/basophils in vitro has been demonstrated by use of recombinant cytokines and allergens, and specific haptens or by use of novel drugs, and should lead to epitope-specific diagnosis and better management of allergic diseases in the future.


Assuntos
Alérgenos/imunologia , Basófilos/imunologia , Eosinófilos/imunologia , Hipersensibilidade/imunologia , Imunoglobulina E/fisiologia , Mastócitos/imunologia , Basófilos/efeitos dos fármacos , Ciclosporina/uso terapêutico , Dessensibilização Imunológica/métodos , Eosinófilos/efeitos dos fármacos , Humanos , Hipersensibilidade/terapia , Mastócitos/efeitos dos fármacos , Tacrolimo/uso terapêutico
17.
J Neurooncol ; 76(3): 293-7, 2006 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-16151594

RESUMO

OBJECTIVE: Prostate cancer is a well known cause of spinal column metastases; however, an intradural location is extremely rare. It is considered to be a type of leptomeningeal spread. Cerebral seeding has usually occurred by the time of presentation. Due to a poor prognosis, surgery is rarely indicated, and controversially discussed. PATIENT AND RESULTS: We review the known cases of spinal leptomeningeal prostate cancer spread, including our patient, who developed paraparesis over 6 weeks, 3 years after prostate cancer was diagnosed. Following surgical decompression and resection, the patient additionally received radiation therapy of the spinal meninges and antihormonal treatment. Six months after surgery, the patient is still ambulatory with a good quality of life. CONCLUSION: Spinal leptomeningeal metastases occur at a late stage of systemic disease, and the prognosis is generally poor. In literature, outcomes after surgery are reported as devastating, with mortality and morbidity rates of up to 20 and 60%. The aim of surgery is to relieve pain, preserve or even restore neurological function, and reveal histology if uncertain. This may be achieved by debulking the tumor without placing the patient at an unacceptably high risk. Surgery should be performed in selected cases of spinal leptomeningeal metastases, in patients who are still ambulatory with controlled systemic disease, and should be followed by adjuvant therapy.


Assuntos
Carcinoma/secundário , Neoplasias Meníngeas/secundário , Neoplasias da Próstata/patologia , Neoplasias da Medula Espinal/secundário , Idoso , Carcinoma/cirurgia , Humanos , Imageamento por Ressonância Magnética , Masculino , Neoplasias Meníngeas/metabolismo , Neoplasias Meníngeas/cirurgia , Procedimentos Neurocirúrgicos , Antígeno Prostático Específico/sangue , Prostatectomia , Neoplasias da Próstata/cirurgia , Neoplasias da Medula Espinal/metabolismo , Neoplasias da Medula Espinal/cirurgia
18.
Acta Neurochir (Wien) ; 148(4): 467-71, 2006 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-16322903

RESUMO

OBJECTIVE: Prostate cancer is a well known cause of spinal column metastases; however, an intradural location is extremely rare. It is considered to be a type of leptomeningeal spread. Cerebral seeding has usually occurred by the time of presentation. Due to a poor prognosis, surgery is rarely indicated, and controversially discussed. PATIENT AND RESULTS: We review the known cases of spinal leptomeningeal prostate cancer spread, including our patient, who developed paraparesis over 6 weeks, 3 years after prostate cancer was diagnosed. Following surgical decompression and resection, the patient additionally received radiation therapy of the spinal meninges and antihormonal treatment. 6 months after surgery, the patient is still ambulatory with a good quality of life. CONCLUSION: Spinal leptomeningeal metastases occur at a late stage of systemic disease, and the prognosis is generally poor. In the literature, outcomes after surgery are reported as devastating, with mortality and morbidity rates of up to 20% and 60%. The aim of surgery is to relieve pain, preserve or even restore neurological function, and reveal histology if uncertain. This may be achieved by debulking the tumor without placing the patient at an unacceptably high risk. Surgery should be performed in selected cases of spinal leptomeningeal metastases, in patients who are still ambulatory with controlled systemic disease, and should be followed by adjuvant therapy.


Assuntos
Carcinoma/secundário , Neoplasias Meníngeas/secundário , Neoplasias da Próstata/patologia , Neoplasias da Medula Espinal/secundário , Aracnoide-Máter/patologia , Aracnoide-Máter/fisiopatologia , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Invasividade Neoplásica/diagnóstico , Invasividade Neoplásica/fisiopatologia , Procedimentos Neurocirúrgicos , Paraparesia/diagnóstico , Paraparesia/etiologia , Paraparesia/fisiopatologia , Pia-Máter/patologia , Pia-Máter/fisiopatologia , Neoplasias da Próstata/tratamento farmacológico , Neoplasias da Próstata/cirurgia , Radioterapia , Medula Espinal/patologia , Medula Espinal/fisiopatologia , Espaço Subaracnóideo/patologia , Espaço Subaracnóideo/fisiopatologia , Resultado do Tratamento
19.
Dtsch Med Wochenschr ; 126(10): 258-62, 2001 Mar 09.
Artigo em Alemão | MEDLINE | ID: mdl-11285759

RESUMO

BACKGROUND AND OBJECTIVE: Legal regulations of cadaver examination and autopsy require fundamental changes. Regulations that result in up to 75% errors in the recorded cause of death on the death certificate make no sense. As an example, rare disease of bronchial malformation may cause sudden, unexpected death but is only detectable at autopsy with subsequent histological examination. PATIENTS AND METHODS: In an series of 17.204 autopsies (from 1980 to 1999) 894 cases of sudden, unexpected death were examined. In 28 cases (3.1%) only histological examination of the lungs provided the cause of natural death. RESULTS: Bronchial dysplasia may be clinically silent and leads to focal panazinar emphysema and atelectasis due to chronic airflow obstruction and an "air trapping" mechanism. Subsequent pulmonary hypertension results in a cor pulmonale, which may fail suddenly and unexpectedly. CONCLUSION: The diagnostic problems of natural death justifies the performance of an autopsy. This fact should be recognized legally. Using the example of bronchial malformation, it is shown that only an autopsy may reveal the exact cause of death.


Assuntos
Autopsia/legislação & jurisprudência , Brônquios/anormalidades , Causas de Morte , Morte Súbita/patologia , Adolescente , Adulto , Brônquios/patologia , Bronquiectasia/patologia , Diagnóstico Diferencial , Feminino , Alemanha , Humanos , Masculino , Pessoa de Meia-Idade
20.
Mod Pathol ; 10(3): 247-51, 1997 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-9071733

RESUMO

Deaths of young athletes are mainly caused by cardiac problems. Noncardiac deaths are infrequent and related to heat stress, drugs, sickle cell trait, and asthma. Herein, we report the case of a 28-year-old man, who collapsed during a marathon race, within sight of the finish line. Despite immediate resuscitation, he died shortly after hospitalization. Autopsy findings revealed neither unambiguous cardiac nor previously published noncardiac causes. Traumatic or drug-related death was excluded as well. We did find, however, focally hyperinflated pulmonary areas adjacent to atelectasis, interstitial emphysema, and mucosal infoldings of several bronchi. Histologically, two-thirds of medium-sized bronchi presented paucity of cartilages. Hence, the resulting flaccidity of the bronchial wall might cause bronchial obstruction, which we related to the genesis of this sudden and unexpected death.


Assuntos
Brônquios/anormalidades , Morte Súbita , Esportes , Adulto , Autopsia , Morte Súbita/etiologia , Humanos , Masculino
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