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Gamma Surgery for Hemangiopericytomas (2000)

Payne, B. R. ; Prasad, D. ; Steiner, M. ; [et al.]

Springer

Acta neurochirurgica 142 (2000), S. 527-537

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ISSN: 0942-0940

Keywords: Keywords: Gamma surgery; Gamma knife; hemangiopericytoma.

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Summary ¶ A retrospective analysis of a consecutive series of 12 patients with 15 intracranial hemangiopericytomas treated at the University of Virginia using Gamma surgery is presented. Clinical and radiographic follow up of 3 to 56 months is available for 10 patients with 12 tumors. There was one tumor present at the time of initial Gamma surgery in each patient. Two new tumors occurred in patients previously treated. Nine of the tumors decreased in volume and three remained stable. Four of the nine tumors that shrank later progressed at an average of 22 months after treatment. Of the tumors that decreased in volume and have not progressed, the response has been for an average of 11 months. The follow-up for two tumors that remained unchanged was 10 and 34 months (average 22 months). A third tumor was unchanged at 42 months but the patient died of new disease adjacent to the treated area in the anterior skull base. There were no complications and the quality of life following the procedure was maintained or improved in every case. Gamma surgery is effective in palliating the patients by decreasing tumor volume and delaying recurrence.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/s007010050465

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Ternary complexes in solution: Complex formation between copper(II), zinc(II), cadmium(II) and ligands of biological importance (1984)

Kumar, K. ; Ram Prasad, D. ; Nigam, P. C.

Springer

Monatshefte für Chemie 115 (1984), S. 731-738

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ISSN: 1434-4475

Keywords: Bipyridyl ; Complex stabilities ; Nitrilotriacetic acid

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Description / Table of Contents: Zusammenfassung Die Stabilitätskonstanten für Cu(II)-, Zn(II)- und Cd(II)-Komplexe vom TypMAL wurden bestimmt. Die biologisch relevanten Liganden, die für diese Untersuchung ausgewählt wurden, waren Bipyridyl (A) und Nitrilotriessigsäure (L). Bei einer Temperatur von 25°C und μ=0,1M (KNO3) sind die entsprechenden logK MAL -Werte für Cu(II), Zn(II) und Cd(II) 11,42, 10,67 und 9,72; diese Reihenfolge wird ebenfalls diskutiert.

Notes: Abstract The stability constants of ternary complexes of theMAL type have been determined for Cu(II), Zn(II) and Cd(II). The ligands chosen for this study belong to the biologically important ones viz. Bipyridyl (A) and Nitrilotriacetic acid (L). LogK MAL values for Cu(II), Zn(II) and Cd(II) are 11.42, 10.67 and 9.72, respectively, at temp.=25°C and μ=0.1M (KNO3); the order is discussed.