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1.
Phys Rev Lett ; 110(15): 152502, 2013 Apr 12.
Artigo em Inglês | MEDLINE | ID: mdl-25167256

RESUMO

The second J(π)=2+ state of 12C, predicted over 50 years ago as an excitation of the Hoyle state, has been unambiguously identified using the 12C(γ,α0)(8)Be reaction. The alpha particles produced by the photodisintegration of 12C were detected using an optical time projection chamber. Data were collected at beam energies between 9.1 and 10.7 MeV using the intense nearly monoenergetic gamma-ray beams at the HIγS facility. The measured angular distributions determine the cross section and the E1-E2 relative phases as a function of energy leading to an unambiguous identification of the second 2+ state in 12C at 10.03(11) MeV, with a total width of 800(130) keV and a ground state gamma-decay width of 60(10) meV; B(E2:2(2)+→0(1)+)=0.73(13)e(2) fm(4) [or 0.45(8) W.u.]. The Hoyle state and its rotational 2+ state that are more extended than the ground state of 12C presents a challenge and constraints for models attempting to reveal the nature of three alpha-particle states in 12C. Specifically, it challenges the ab initio lattice effective field theory calculations that predict similar rms radii for the ground state and the Hoyle state.

2.
Phys Rev Lett ; 110(20): 202501, 2013 May 17.
Artigo em Inglês | MEDLINE | ID: mdl-25167400

RESUMO

The first measurement of the three-body photodisintegration of longitudinally polarized (3)He with a circularly polarized γ-ray beam was carried out at the High Intensity γ-ray Source facility located at Triangle Universities Nuclear Laboratory. The spin-dependent double-differential cross sections and the contributions from the three-body photodisintegration to the (3)He Gerasimov-Drell-Hearn integrand are presented and compared with state-of-the-art three-body calculations at the incident photon energies of 12.8 and 14.7 MeV. The data reveal the importance of including the Coulomb interaction between protons in three-body calculations.

3.
Eur Surg Res ; 39(3): 129-35, 2007.
Artigo em Inglês | MEDLINE | ID: mdl-17337889

RESUMO

OBJECTIVE: To investigate whether irrigation of the abdominal cavity after laparotomy for caecum resection with taurolidine/heparin or adhesion prophylactic substances reduces intraperitoneal tumour growth or the local recurrence rate in a colon carcinoma rat model. METHODS: 60 BDIX rats underwent caecum resection after intraperitoneal inoculation of 1 x 10(4) colon carcinoma cells (DHD/K12/TRb). Intergel, Interceed, taurolidine/heparin or NaCl 0.9% were intraperitoneally applied after randomisation. Finally, the total number and total weight of intraperitoneal metastases were determined as well as the adhesion score according to Moreno. Metastatic tissue was examined histologically and immunohistochemically (E-cadherin, CD44, beta(1)-integrin). RESULTS: Taurolidine/heparin significantly reduced not only the total number (3 vs. 11 in the control group) but also the total weight (65 vs. 330 mg) of intraperitoneal metastases in comparison to the control group (p = 0.003 and p = 0.005). E-Cadherin expression in the metastatic tissue of animals treated with taurolidine/heparin was significantly decreased (p = 0.016). CONCLUSION: Taurolidine/heparin effectively reduces intraperitoneal tumour growth when used as an intraoperative lavage. These results represent a good rationale for intraoperative adjuvant irrigation with taurolidine/heparin during resection of colon cancer.


Assuntos
Adenocarcinoma/tratamento farmacológico , Anticoagulantes/uso terapêutico , Antineoplásicos/uso terapêutico , Neoplasias do Colo/tratamento farmacológico , Heparina/uso terapêutico , Recidiva Local de Neoplasia/prevenção & controle , Taurina/análogos & derivados , Tiadiazinas/uso terapêutico , Neoplasias Abdominais/tratamento farmacológico , Neoplasias Abdominais/patologia , Adenocarcinoma/patologia , Adenocarcinoma/cirurgia , Animais , Anticoagulantes/administração & dosagem , Antineoplásicos/administração & dosagem , Neoplasias do Colo/cirurgia , Heparina/administração & dosagem , Imuno-Histoquímica , Instilação de Medicamentos , Laparotomia , Masculino , Metástase Neoplásica/patologia , Metástase Neoplásica/prevenção & controle , Ratos , Taurina/administração & dosagem , Taurina/uso terapêutico , Tiadiazinas/administração & dosagem , Aderências Teciduais/prevenção & controle
5.
Hautarzt ; 46(7): 451-4, 1995 Jul.
Artigo em Alemão | MEDLINE | ID: mdl-7672982

RESUMO

Atopic dermatitis and psoriasis vulgaris belong to the most common diseases in dermatology. Since these chronical diseases progress over years and decades, they may lead to restrictions in private and professional life as well as to psychological stress of concerned patients. Therefore, a lasting, stabilising, stage-adjusted topical treatment is necessary. Main component of this treatment in a complete therapeutical concept consists in an adjuvant basic therapy with oil baths and with emollients containing urea or no drug additives at all. Thus the vehicle itself is therapeutically effective. Altered structure and function of the skin measured by increased transepidermal water loss, dysfunction of skin lipid barrier, augmented skin permeability and skin roughness can be improved. Due to this treatment clinical symptoms can be diminished and relapses can be avoided. Corticosteroids and other specific medications can be reduced by using basic therapeutics with little side effects. This means economical benefit as well. So far adjuvant basic treatment is an essential part in the therapy of chronic inflammatory skin diseases.


Assuntos
Banhos , Dermatite Atópica/terapia , Fármacos Dermatológicos , Emolientes , Óleos , Psoríase/terapia , Corticosteroides/administração & dosagem , Corticosteroides/economia , Banhos/economia , Terapia Combinada , Análise Custo-Benefício , Dermatite Atópica/economia , Humanos , Psoríase/economia , Ureia/administração & dosagem , Ureia/economia
6.
Endosc Surg Allied Technol ; 2(1): 3-9, 1994 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-8081912

RESUMO

The standard procedure for cervical oesophageal carcinoma consists of partial pharyngectomy, laryngectomy with tracheostomy, resection of one thyroid lobe and complete oesophagectomy. For intrathoracic and abdominal carcinoma of the oesophagus, subtotal resection leaving a small cervical portion is sufficient. If the carcinoma has not exceeded the organ boundaries or is located below the tracheal bifurcation, the choice of resection either by transthoracic, transmediastinal or endoscopic methods is not critical with respect to the radical nature of the resection. In carcinoma located at or above the tracheal bifurcation a transthoracic approach is mandatory, but due to a significant hospital mortality and a low 5-year survival the question regarding valid indications for surgery remains open in most patients. With reference to the rules of radical surgery a "three-field" lymphadenectomy, which includes the resection of cervical, mediastinal and upper gastric lymph nodes, seems to be indispensable in all oesophageal carcinomas. Only some Japanese groups perform this procedure routinely or in selected cases. They report a positive correlation between the extent of lymph node dissection and the long-term survival. Since none of their studies is prospectively randomized, a certain bias could exist resulting in better results for extended lymphadenectomy. According to European experience, radical surgery of oesophageal carcinoma is more fiction than fact.


Assuntos
Neoplasias Esofágicas/cirurgia , Toracoscopia/métodos , Anastomose Cirúrgica/métodos , Neoplasias Esofágicas/mortalidade , Neoplasias Esofágicas/patologia , Seguimentos , Mortalidade Hospitalar , Humanos , Excisão de Linfonodo/instrumentação , Estadiamento de Neoplasias , Complicações Pós-Operatórias/mortalidade , Taxa de Sobrevida
7.
Dis Colon Rectum ; 36(4): 377-82, 1993 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-7681368

RESUMO

The results of different treatment modalities in 196 patients with rectal carcinoma were analyzed. Patients were treated by palliative endoscopic laser therapy (n = 37), palliative surgery (n = 42), and curative surgery (n = 117). Laser therapy was successful for recanalization of the stenosis with 1.3 (range, one to five) sessions. Bleeding stopped always after a single session. If necessary, treatment was repeated monthly. Good results were seen in 35/37 patients (95 percent). They received an average of four sessions during their remaining lifetime, the median of which was eight months. No morbidity and no therapy-related mortality occurred. Palliative surgery (expanded and restricted resections) showed good results in 41/42 patients (98 percent). Morbidity was 3/42 (7 percent); mortality was 1/42 (2 percent). The median survival was 14 months for local surgical treatment and 6.3 months for deep anterior rectal resection and for abdominoperineal (Dixon's) resection. No significant difference (P = 0.15) in survival times between the palliatively treated patient groups could be detected. Survival prognosis was determined by tumor stage and outcome. In the curative (outcome R0) resection patients, morbidity and mortality were each 9/117 (8 percent). The three-year survival rate was 80 percent. If curative resection is impossible, laser therapy should be considered as an alternative to palliative surgery because of less hospitalization and seemingly less side effects. The decision on the kind of palliation in patients with rectal carcinoma should be made with regard to the patient's quality of life.


Assuntos
Terapia a Laser , Cuidados Paliativos/métodos , Neoplasias Retais/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Endoscopia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Retais/mortalidade , Estudos Retrospectivos , Taxa de Sobrevida
8.
Am J Clin Nutr ; 50(3): 454-9, 1989 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-2773825

RESUMO

Aggressive oncological chemotherapy often impairs the nutritional status of tumor patients. To evaluate the pathogenetic mechanisms, food intake in 13 cancer patients was investigated in correlation with nitrogen losses, N balances, muscle wasting, and weight course, during cytostatic therapy. Median daily N and energy intakes were reduced only in patients with weight loss [0.55 g protein, 16.5 kcal/kg ideal body wt (IBW)]. Patients with constant weight had the same intake as control subjects (1.27 g protein, 37.2 kcal IBW). N balances and creatinine height index (CHI) correlated with daily nutrient intake. Fecal N excretions did not correlate with urinary losses; there was no excess of fecal N loss because of cytostatic treatment. The impairment of cancer patients' nutritional status seems to depend primarily on the decrease of spontaneous oral intake as a consequence of the side effects of tumor therapy. Changes in CHI, compared before and after chemotherapy, indicated muscle wasting of weight-losing patients.


Assuntos
Antineoplásicos/uso terapêutico , Ingestão de Energia , Neoplasias/metabolismo , Nitrogênio/metabolismo , Adulto , Peso Corporal/efeitos dos fármacos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/tratamento farmacológico , Fenômenos Fisiológicos da Nutrição
10.
Am J Dig Dis ; 23(10): 952-5, 1978 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-717356

RESUMO

A patient with multiple gastroduodenal ulcers and gastric hypersecretion due to histamine excess associated with basophilic leukemia is described. Treatment with the histamine H-2-receptor blocker, cimetidine, was able to abolish the gastric hypersecretion and gastrointestinal blood loss. A literature review produced four other cases of multiple gastroduodenal ulceration with this disease, suggesting that it is more common than previously recognized. The availability of a potent H-2-receptor antagonist offers effective and specifically tailored therapy to counteract the gastrointestinal effects of hyperhistaminemia in basophilic leukemia and other "histamine excess" diseases.


Assuntos
Cimetidina/uso terapêutico , Guanidinas/uso terapêutico , Leucemia/diagnóstico , Úlcera Péptica/diagnóstico , Adulto , Basófilos , Diagnóstico Diferencial , Suco Gástrico/efeitos dos fármacos , Suco Gástrico/metabolismo , Mucosa Gástrica/efeitos dos fármacos , Mucosa Gástrica/metabolismo , Histamina/metabolismo , Humanos , Leucemia/tratamento farmacológico , Masculino , Pessoa de Meia-Idade
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