Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of medicinal chemistry 26 (1983), S. 39-42 
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1524-4741
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: Interest in intraoperative radiation therapy (IORT) for breast cancer is increasing as the possible benefits of this technique for the patient become apparent. The rationale for the use of this segmental radiation therapy in place of whole-breast irradiation is based on the finding that approximately 85% of breast relapses are confined to the same quadrant of the breast as the primary tumor. Phase I and II trials have demonstrated no increase in postsurgical complication rates following the use of single-dose IORT in localized breast cancers. Longer follow-up is needed to assess the cosmetic outcome. Clinical trials to evaluate the effectiveness of IORT in the treatment of breast cancer are currently under way at the European Institute of Oncology (EIO) at the University of Milan, Italy, and at Memorial Sloan-Kettering Cancer Center (MSKCC) in New York. Here we report the two different techniques in use in these trials. 
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1524-4741
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background. Axillary lymph-node dissection is an important staging procedure in the surgical treatment of breast cancer. However, early diagnosis has led to increasing numbers of dissections in which axillary nodes are free of disease. This raises first, questions about the need for the procedure. We carried out a study to assess, first, whether a single axillary lymph node (sentinel node) initially receives malignant cells from a breast carcinoma and, second, whether a clear sentinel node reliably forecasts a disease-free axilla. Methods. In a consecutive series of 163 women with operable breast carcinoma, we injected microcolloidal particles of human serum albumin labelled with technetium-99m. This tracer was injected subdermally, close to the tumor site, on the day before surgery, and scintigraphic images of the axilla and breast were taken 10 min, 30 min, and 3 h later. A mark was placed on the skin over the site of the radioactive node (sentinel node). During breast surgery, a hand-held γ-ray det$ector probe was used to locate the sentinel node, and make possible its separate removal via a small axillary incision. Complete axillary lymphadenectomy was then done. The sentinel node was tagged separately from other nodes. Permanent sections of all removed nodes were prepared for pathological examination. Findings. From the sentinel node, we could accurately predict axillary lymph-node status in 156 (97.5%) of the 160 patients in whom a sentinel node was identified, and in all cases (45 patients) with tumours less than 1.5 cm in diameter. In 32 (38%) of the 85 cases with metastatic axillary nodes, the only positive node was the sentinel node. Interpretation. In the large majority of patients with breast cancer, lymphoscintigraphy and γ-probe-guided surgery can be used to locate the sentinel node in the axilla, and thereby provide important information about the status of axillary nodes. Patients without clinical involvement of the axilla should undergo sentinel-node biopsy routinely, and may be spared complete axillary dissection when the sentinel node is disease-free.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1524-4741
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: Breast conservation surgery is an effective and safe treatment for many breast carcinomas. It may be possible to further limit the extent of resection (or expand the indication for breast conservation) by the application of preoperative chemotherapy and radiotherapy. We explored the feasibility of this in a pilot study.Seventy-three patients (mean age 48, 63% premenopausal) with confirmed breast cancer, less than 2.5 cm, received chemotherapy (Group A) or chemotherapy plus radiotherapy (Group B) prior to limited resection (tumorectomy). Axillary dissection was always performed. Results: In 6/31 (19%) Group A and 17/42 (40%) Group B patients the tumor was not palpable after preoperative treatment, with complete pathological remission in 1 and 3 cases respectively. Histologic grading, mitosis, cellular alteration, and cellularity evaluations indicated a consistently greater therapeutic effect with chemoradiotherapy than with chemotherapy alone.In conclusion, radiotherapy appears useful in the preoperative treatment of breast cancer and its use in association with various drug combinations should be further explored.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 54 (1990), S. 0 
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: In AtT-20 cells somatostatin inhibits the secretion of adrenocorticotropic hormone (ACTH) through the activation of GTP binding proteins (G proteins) linked to second messengers such as calcium and cyclic AMP (cAMP). Recently, it has been proposed that there may be G proteins that regulate directly the exocytotic machinery. We have investigated whether somatostatin could inhibit secretion at a step distal to second messengers through a GTP binding protein. For these studies two experimental paradigms were used: (1) intact cells stimulated by calcium ionophores and (2) digitonin-permeabilized cells exposed to buffers of increasing Ca2+ concentrations. Somatostatin inhibited by 70% the ACTH release caused by the calcium ionophore ionomycin without modifying the ionophore-induced elevation in cytosolic [Ca2+]. This effect was cAMP independent because (1) it was observed in the presence of high concentrations of membrane-permeant cAMP analogues, and (2) it was not accompanied by a change in cAMP levels. The effect was also independent of the levels of activators of protein kinase C because it could be produced in the presence of high concentrations of phorbol esters. The action of somatostatin was prevented by pertussis toxin. In digitonin-permeabilized AtT-20 cells somatostatin inhibited release induced by calcium buffers in a GTP-dependent manner. These two observations indicate the involvement of a G protein. It is proposed that a G protein coupled to somatostatin receptors inhibits the intracellular machinery of secretion at a step distal to second messengers, perhaps at the exocytotic site.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 710 (1994), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Membrane fission is essential in intracellular transport. Acyl-coenzyme As (acyl-CoAs) are important in lipid remodelling and are required for fission of COPI-coated vesicles. Here we show that CtBP/BARS, a protein that functions in the dynamics of Golgi tubules, is an essential component of ...
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 1534-4681
    Keywords: Sentinel node biopsy ; Breast cancer ; Lymphoscintigraphy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Sentinel node (SN) biopsy may predict axillary status in breast cancer. We retrospectively analyzed more than 500 SN cases, to suggest more precise indications for the technique. Methods99mTc-labeled colloid was injected close to the tumor; lymphoscintigraphy was then performed to reveal the SN. The next day, during surgery, the SN was removed by using a gamma probe. Complete axillary dissection followed, except in later cases recruited to a randomized trial. The SN was examined intraoperatively by conventional frozen section, in later cases by sampling the entire node and using immunocytochemistry. Results: In the first series, the SN was identified in 98.7% of cases; in 6.7%, the SN was negative but other axillary nodes were positive; in 32.1%, the SN was negative by intraoperative frozen section but metastatic by definitive histology, prompting introduction of the exhaustive method. In the randomized trial, the SN was identified in all cases so far, the false-negative rate is approximately 6.5%, and in 15 cases, internal mammary chain nodes were biopsied. Conclusions: SN biopsy can reliably assess axillary status in selected patients. The problems are the SN detection rate, false negatives, and the intraoperative examination, which can miss 30% of SN metastases. Our exhaustive method overcomes the latter problem, but it is time consuming.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'analyse des principaux essais récents d'interventions conservatrices pour cancer du sein, pratiqués à l'Institut du Cancer de Milan entre 1973 et 1988, a montré que la résection large [quadranectomie] associée à la radiothérapie est sûre et que la survie à distance (recul jusqu'à 19 ans) est comparable à celle obtenue après mastectomie selon Halstead. Ces mêmes études ont montré que l'absence de radiothérapie associée augmentait le risque de récidive et que la tumorectomie (“lumpectomie”) était associée à un risque de récidive locale trois fois plus élevé. Chez la femme de 55 ans ou plus, cependant, la quadranectomie isolée reste valable. Parmi les facteurs de risque de récidive locale, on note l'âge jeune et la présence de composant intracanalaire étendu.
    Abstract: Resumen Los más recientes análisis de los resultados de tres ensayos clínicos mayores sobre conservación de la glándula mamaria, realizados en el Instituto de Cáncer de Milán entre 1973 y 1988, demuestran que la conservación de la glándula mamaria mediante una amplia resección parcial (cuadrantectomía) combinada con radioterapia es un procedimiento seguro y que no se observan diferencias en la sobrevida a largo plazo, en seguímíento hasta de 19 años, en comparación con la mastectomía de Halsted. Tales estudios demostraron que, al reducir la resección de una cuadrantectomía a una tomorectomía, se aumenta el riesgo de recurrecia en casi tres veces y no prescribir radioterapia también incrementa en forma importante las tasas de recurrecia local. Sin embargo, en mujeres mayores de 55 años, la cuadrantectomía sola, sin radioterapia, puede dar buenos resultados. Entre los factores de riesgo de recurrencia local, la edad joven y la presencia de un extenso componente de carcinoma intraductal son los principales.
    Notes: Abstract The most recent analysis of the results of three major trials on breast conservation carried out at the Milan Cancer Institute between 1973 and 1988 showed that breast conservation consisting of a wide breast resection (quadrantectomy) plus radiotherapy is a safe procedure, and that there are no differences in long-term survival (up to 19 years) compared with women who have undergone Halsted's mastectomy. The studies also showed that reducing the extent of surgery from quadrantectomy to lumpectomy increases the risk of local recurrence by nearly three times, as does withdrawing radiotherapy. However, in women older than 55 years, quadrantectomy alone (without radiotherapy) may yield good results. Among the risk factors for local recurrence, a young age and the presence of an extensive intraductal component are the most significant.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In intact rat basophilic leukaemia (RBL) cells, ADP-ribosyla-tion factor (ARF) and /J-COP immimolabelling gave a para-nuclear Golgi-like staining pattern (see Fig. 3), as previously seen in many other cell types6 9. By contrast, RBL cells permeabilized with streptolysin-O (SLO)10 in the absence ...
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...