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  • 1
    Digitale Medien
    Digitale Medien
    Pharmacokinetics of cefoxitin administered by i.v. infusion to patients with a pleural effusion (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 389-392 
    Details
    ISSN: 1432-1041
    Schlagwort(e): cefoxitin ; beta-lactam antibiotics ; pharmacokinetics ; serum concentration ; pleural fluid concentration
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The pharmacokinetics of cefoxitin was studied in 6 healthy volunteers and in 5 patients with a pleural effusion after administration of a single dose of 30 mg/kg i.v. infusion. The serum and pleural fluid concentrations of cefoxitin were determined microbiologically. The elimination half-life of the antibiotic from pleural fluid in all cases was 2–3fold longer than from serum, which shows a difference between the kinetic elimination processes of the antibiotic from the two fluids. The slow elimination of cefoxitin from pleural fluid facilitates its accumulation in this compartment during a multiple dosage regimen.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00548772
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  • 2
    Digitale Medien
    Digitale Medien
    Disposition of Cefoxitin in patients with ascites (1981)
    Springer
    European journal of clinical pharmacology 20 (1981), S. 371-374 
    Details
    ISSN: 1432-1041
    Schlagwort(e): cefoxitin ; cirrhosis ; pharmacokinetics ; ascites ; ascitic fluid level
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The pharmacokinetics of Cefoxitin was studied in 8 cirrhotic patients with ascites after i.v. administration of a single 30 mg/kg dose. Concentrations of cefoxitin in serum and in ascitic fluid were determined simultaneously by a microbiologic plate diffusion method. The antibiotic followed a two-compartment open kinetic model. In ascitic fluid, Cefoxitin reached its maximum concentration of 32.80±13,78 µg/ml 2 h after administration. The mean elimination constant from ascitic fluid was 0.201±0.008 h−1, significantly lower (p〈0.05) than the slow disposition phase constant (β=0.556±0.17 h−1). At the dose studied and with a dosage interval of 8 h, the level of antibiotic in the ascitic fluid would be maintained at a value greater than the MIC of most cefoxitin-sensitive organisms.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00615407
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  • 3
    Digitale Medien
    Digitale Medien
    Pharmacokinetics of cefoxitin in patients with normal or impaired renal function (1979)
    Springer
    European journal of clinical pharmacology 16 (1979), S. 119-124 
    Details
    ISSN: 1432-1041
    Schlagwort(e): cefoxitin ; renal impairment ; pharmacokinetics
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The pharmacokinetics of cefoxitin have been determined after a single i.v. injection of 15 mg/kg body weight in 10 patients with normal renal function and 20 patients with varying degrees of renal impairment. The kinetics of the antibiotic followed an open two-compartment model. In patients with normal renal function the following pharmacokinetic parameters were found: $$\begin{gathered} \begin{array}{*{20}c} {\alpha = 8.66 h^{ - 1} } & {\beta = 1.21 h^{ - 1} } & {K_{12} = 3.47 h^{ - 1} } \\ \end{array} \hfill \\ \begin{array}{*{20}c} {K_{21} = 3.17 h^{ - 1} } & {K_{13} = 3.15 h^{ - 1} } & {V_c = 4.24 l.} \\ \end{array} \hfill \\ \begin{array}{*{20}c} {V_p = 4.87 l.} & { Vd_{ss} = 9.11 l.} \\ \end{array} \hfill \\ \end{gathered}$$ In the patients with renal impairment there was a significant decrease in $$\mathop \alpha \limits_, \mathop \beta \limits_, $$ K12, K21 and K13, and an increase in the apparent volume of distribution. The degree of plasma protein binding in patients with normal renal function was 73.6% and this was diminished in patients with renal impairment. A linear relationship between K13 of cefoxitin and creatinine clearance was demonstrated. The dosage regimen for patients with renal impairment should be adjusted by modifying the dosage interval whilst maintaining the amount administered.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00563118
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  • 4
    Digitale Medien
    Digitale Medien
    Pharmacokinetics of cefoxitin during haemofiltration (1983)
    Springer
    European journal of clinical pharmacology 25 (1983), S. 395-398 
    Details
    ISSN: 1432-1041
    Schlagwort(e): haemofiltration ; cefoxitin ; pharmacokinetics ; renal failure ; beta-lactam-antibiotics ; haemodialysis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The pharmacokinetics of cefoxitin was studied in patients with renal impairment during haemofiltration and in the intervening periods after administration of 30 and 15 mg/kg of the drug, respectively. Different pharmacokinetic patterns were established during haemofiltration and in the interim period, with average elimination half-lives of 11.85±4.3 and 3.41±0.6 h, respectively. The average fraction of the cefoxitin dose eliminated in haemofiltration was 0.62±0.11, more than that established in haemodialysis. In patients with terminal renal impairment undergoing haemofiltration every 48 h, a dose of 15 or 30 mg/kg is recommended at the start and at the end of each haemofiltration session.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01037954
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  • 5
    Digitale Medien
    Digitale Medien
    The pattern of zygotene and pachytene pairing in allotetraploid Aegilops species sharing the D genome (1996)
    Springer
    Theoretical and applied genetics 93 (1996), S. 1175-1179 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Key wordsAegilops ; Allotetraploid ; Diploidization ; Pairing control ; Synaptonemal complex
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Chromosome pairing behaviour of the allotetraploid Aegilops species sharing the D genome, Ae. crassa (DDMM), Ae. cylindrica (DDCC) and Ae. ventricosa (DDNN), was analyzed by electron microscopy in surface-spread prophase-I nuclei. Synaptonemal-complex analysis at zygotene and pachytene revealed that synapsis in the allotetraploids was mostly between homologous chromosomes, although a few multivalents were also formed. Only homologous bivalents were observed at metaphase-I. It is concluded that the mechanism controlling bivalent formation in these species acts mainly at zygotene by restricting pairing to homologous chromosomes, but also acts at pachytene by preventing chiasma formation in homoeologous associations. These observations are discussed in relation to mechanisms of diploidization of polyploid meiosis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s001220050353
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  • 6
    Digitale Medien
    Digitale Medien
    The pattern of zygotene and pachytene pairing in allotetraploid Aegilops species sharing the U genome (1996)
    Springer
    Theoretical and applied genetics 93 (1996), S. 1152-1155 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Aegilops ; Allotetraploid ; Diploidization ; Pairing control ; Synaptonemal complex
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Allotetraploid Aegilops species sharing the U genome, Ae. columnaris (UUMM), Ae. ovata (UUMM), Ae. triaristata (UUMM), Ae. triuncialis (UUCC) and Ae. variabilis (UUSS), regularly form bivalents at metaphase I of meiosis. The pattern of zygotene and pachytene pairing was analyzed by whole-mount surface-spreading of synaptonemal complexes under the electron microscope. The data indicated that at the zygotene stage the chromosomes were almost exclusively associated as bivalents; only a few multivalents (7%) were observed. These observations are discussed in relation to mechanisms of diploidization of polyploid meiosis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00230139
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  • 7
    Digitale Medien
    Digitale Medien
    The pattern of zygotene and pachytene pairing in allotetraploid Aegilops species sharing the D genome (1996)
    Springer
    Theoretical and applied genetics 93 (1996), S. 1175-1179 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Aegilops ; Allotetraploid ; Diploidization ; Pairing control ; Synaptonemal complex
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Chromosome pairing behaviour of the allotetraploid Aegilops species sharing the D genome, Ae. crassa (DDMM), Ae. cylindrica (DDCC) and Ae. ventricosa (DDNN), was analyzed by electron microscopy in surfacespread prophase-I nuclei. Synaptonemal-complex analysis at zygotene and pachytene revealed that synapsis in the allotetraploids was mostly between homologous chromosomes, although a few multivalents were also formed. Only homologous bivalents were observed at metaphase-I. It is concluded that the mechanism controlling bivalent formation in these species acts mainly at zygotene by restricting pairing to homologous chromosomes, but also acts at pachytene by preventing chiasma formation in homoeologous associations. These observations are discussed in relation to mechanisms of diploidization of polyploid meiosis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00230143
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  • 8
    Digitale Medien
    Digitale Medien
    The pattern of zygotene and pachytene pairing in allotetraploid Aegilops species sharing the U genome (1996)
    Springer
    Theoretical and applied genetics 93 (1996), S. 1152-1155 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Key wordsAegilops ; Allotetraploid ; Diploidization ; Pairing control ; Synaptonemal complex
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Allotetraploid Aegilops species sharing the U genome, Ae. columnaris (UUMM), Ae. ovata (UUMM), Ae. triaristata (UUMM), Ae. triuncialis (UUCC) and Ae. variabilis (UUSS), regularly form bivalents at metaphase I of meiosis. The pattern of zygotene and pachytene pairing was analyzed by whole-mount surface-spreading of synaptonemal complexes under the electron microscope. The data indicated that at the zygotene stage the chromosomes were almost exclusively associated as bivalents; only a few multivalents (7%) were observed. These observations are discussed in relation to mechanisms of diploidization of polyploid meiosis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s001220050349
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