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  • American Society of Hematology  (79)
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  • 1
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Journal of Physical Organic Chemistry 6 (1993), S. 15-22 
    ISSN: 0894-3230
    Keywords: Organic Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Zinc(II) complexes of N-pyridylcinnamides (H, m-OCH3, p-OCH3 and p-OH derivatives) were studied by spectrophotometric methods in aprotic media, and represent a chemical model inhibition by cinnamides of coniferyl alcohol dehydrogenase (CAD), a zinc enzyme involved in the lignification process. The complexation of N-pyridylcinnamide and m-methoxy-N-pyridylcinnamide with zinc ion is effected according to a 1 : 1 stoichiometry (ML), whereas a two-step equilibrium (M + L ⇌ ML \documentclass{article}\pagestyle{empty}\begin{document}$ V_{\rm m} = 4 \cdot 45C_0 + 6 \cdot 44C_1 - 3 \cdot 33C_2 + 0 \cdot 46C_4 + 52 \cdot 9{\rm (}n = 300,r = 0 \cdot 999,s = 0 \cdot 81) $\end{document} ML2) is preferred with p-methoxy and p-hydroxy compounds. These ligands are mainly bonded through the carbonyl oxygen atom and the nitrogen of the pyridyl ring. Molar absorptivities for these complexes, not directly available, were calculated from analysis of the experiemental data. The UV complexation results are also supported by the stoichiometry of the complexes, which were synthesized and characterized.
    Additional Material: 4 Ill.
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  • 2
    Publication Date: 2006-11-16
    Description: The Internet is changing the way that people learn about health and illness. At present do not exist data of the use of Internet by patients of lymphoma and her caregivers in Spain. OBJECTIVE: To investigate the distribution and patterns of Internet use by patients with lymphoma and her caregivers. PATIENTS AND METHODS: 585 subjects (258 patients, 264 relatives and 63 health professionals), 228 male and 357 female, they have responded a questionnaire on diverse aspects of the use of Internet. RESULTS: Two hundred fifty (42,7%) subjects use Internet, although only 27% make to obtain data on lymphoma. With respect to the group of patients 31% recognize to use Internet, but only the 23,3% do it by questions related to their disease. The main reasons for Internet use are to obtain information about treatments (74.7%) or second opinion medical (9.3%). The 77,6% have been using Internet for more than 3 years; the 47,2% have university studies and the 58,4% have between 33–50 years. Mainly the information search is made in Spanish language and through the Google finder. They consider that Information on lymphoma is acceptable (44.9%) or of enough quality (43.7%), trustworthy (50.6%) or of enough reliability (33.5%) and useful (45.6%) or quite useful (37.3%). COMMENTARIES: This study contributes data on the use of Internet by patients with lymphoma and her caregivers in Spain. Oncologists should be familiar with this important resource to help patients access appropriate material.
    Print ISSN: 0006-4971
    Electronic ISSN: 1528-0020
    Topics: Biology , Medicine
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  • 3
    Publication Date: 2016-12-02
    Description: Introduction:Renal impairment (RI) is a common complication of multiple myeloma (MM). Almost 20% of patients (pts) present with RI at diagnosis, while approximately 40%-50% of pts will develop RI during the course of their disease. However, there is little information on the renal response of pts with relapsed refractory MM (RRMM) receiving treatment with new drugs in clinical practice. Aims: This is an observational, prospective, multicenter study conducted in pts with RRMM and RI (defined as an estimated glomerular filtration rate [eGFR] 〈 50 mL/min) to evaluate renal response to the administered therapy in pts with moderate (creatinine clearance [CrCl] 30-50 mL/min) or severe (CrCl 〈 30 mL/min) RI. Secondary objectives include MM response rate, overall survival, safety, and health resource utilization. We present results from an interim analysis 4 mos after completion of the inclusion period (cutoff: June 13, 2016). Methods:Renal and MM responses were evaluated according to International Myeloma Working Group criteria. Both eGFR by the Cockroft-Gault (CG) and Modification of Diet in Renal Disease (MDRD) formulas were compared to analyze renal response. Results:Overall, 312 pts (mean ± SD age 75 ± 9 yrs, 50% male, 57% in first relapse) were included in the study; 217 (70%) had moderate and 95 (30%) had severe RI, respectively. Anti-myeloma therapies administered were lenalidomide (LEN; 35% of pts), bortezomib (BORT; 21%), different chemotherapy regimens (CT; 22%), and other non-CT treatments (22%). Median follow-up was 7 mos (range, 0-39 mos). To date, 123 pts (39%) have discontinued treatment, 12% due to adverse events (AEs), and 37% have died. The main causes of death were disease progression (8.3%) and infections (6.4%). The mean baseline eGFR according to CG and MDRD formulas was 38.7/41.7 (± 8.5/11.8) mL/min in the moderate RI subgroup and 20.3/20.1 (± 8.0/10.1) mL/min in the severe RI group, with a strong correlation (coefficient 0.91) between the CG and MDRD eGFR. Overall, 13.5% (95% CI, 9.7%-17.2%) of patients had a renal response (5.8% renal complete response [renalCR], 0.3% renal partial response [renalPR], and 7.4% renal minor response [renalMR]) according to the CG formula while responses measured by the MDRD formula, were 17.3% (9.9% renalCR, 0.3% renalPR, and 7.1% renalMR). Median time to best renal response was 1.8 mos (range, 0.5-8.9 mos). After adjusting for demographic and clinical characteristics, there were no significant differences in GFR improvement between pts receiving LEN- and BORT-based treatments (P = 0.706). Arterial hypertension and female sex were statistically significantly associated with poor renal response. The overall MM efficacy response rate (≥ PR) was 33.4%, achieved after a median of 3.4 mos (range, 0.07-37.8 mos). For pts receiving BORT and LEN, respectively, the overall response rates were 43.5% and 44.8%, whereas only 23% of pts receiving CT achieved at least PR. Progression-free survival was 13.3 mos with LEN-based, 6.8 mos with BORT-based, and 7.5 mos with CT-based therapies (P = 0.006). Conclusions: Preliminary results of this study in pts with RRMM and RI show that LEN- and BORT-based therapies are the regimens most commonly used in clinical practice in these pts. Overall, these therapies can improve RI in approximately 13% of cases, with no differences seen in renal function improvement between LEN- and BORT-based treatments. Disclosures De La Rubia: Amgen, Bristol Myers, Celgene, Janssen: Consultancy. Morales:Celgene: Consultancy. García-Muñoz:Celgene, Roche: Consultancy. Duran:Celgene: Employment.
    Print ISSN: 0006-4971
    Electronic ISSN: 1528-0020
    Topics: Biology , Medicine
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  • 4
    Publication Date: 2005-11-16
    Description: Introduction: Rituximab plus CHOP every 3 weeks is associated with a increase in the survival of elderly patients. Dose intensification and dose compression with G-CSF support may provide an advantage compared with standard-dose CHOP. Purpose: To evaluate the efficacy and safety of Rituximab plus CHOP with increased dose of cyclophosphamide and shortened intervals between chemotherapy courses in newly-diagnosed patients with diffuse large-B-cell lymphoma. Therapeutic scheme: Rituximab 375 mg/m2 (d1), cyclophosphamide 1.500 mg/m2 (d1), vincristine 1.4 mg/m2 maximum 2 mg (d1), adriamycin 50 mg/m2 (d1) and prednisone were given. G-CSF (5–10 μg/kg) was added on days 3 to 11 in each course. Six to 8 courses were applied at 14-day intervals. Results: Between january 2002 and may 2005 twenty eight patients, from seven institutions, were included in this study and received 187 courses. Their median age was 48 years (19 to 59 years). The four last patients have not yet finished their treatment and were not evaluable for response. All patients exhibited alopecia and acceptable myelosupression. Thirteen episodes of fever were reported. Among 24 evaluable patients ORR was 83.3% (70.8% CR and 12.5% PR). With a median follow-up of 11 months (range 4–42) the OS and EFS at 30 months is 83% and 75%, respectively. Conclusions: The administration of Rituximab plus CHOP every 14 days with enhanced dose of cyclophosphamide is safe. The toxicity is mainly hematological, but can be surmounted with the use of G-CSF and EPO. Recruitment of more patients and longer follow-up are required to confirm these results.
    Print ISSN: 0006-4971
    Electronic ISSN: 1528-0020
    Topics: Biology , Medicine
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  • 5
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 188 (1987), S. 2001-2009 
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: A novel series of liquid crystalline side chain polymers containing oligo(ethylene oxide) spacers was synthesized and characterized. These included acrylates, methacrylates, and methacrylate copolymers. Although all polymers were polymerized free radically, NMR tacticity studies showed a systematic variation of the observed tacticity of the methacrylate series, the isotactic content decreasing with increasing spacer length. The data indicate that the spacer length and mesogenic group play a role in determining microstructure during polymerization.
    Additional Material: 2 Ill.
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  • 6
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Environmental effects on the electronic structure of molecules caused by external perturbations are studied by means of an expansion of molecular orbital wave functions into valence-bond (VB) wave functions. Applications are carried out to the π system of butadiene, hydroxyethylene, acrolein, and carbonyl oxide and also to the full electronic system of water. The external perturbations considered are uniform electric fields, nonuniform electric fields, and reaction fields created by solvents. A different behavior is found between nonpolar and polar species in the presence of solvents. Some consequences on the behavior of molecules under the influence of the different electric fields are discussed.
    Additional Material: 3 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 44 (1992), S. 887-895 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Valence-bond calculations have been carried out on ZnO and HgO using a basis set of Slatertype atomic orbitals and the one- and two-electron integrals as computed in the semiempirical AM1 molecular orbital method. The zero differential overlap approximation has been used to calculate integrals between atomic orbital Slater determinants using the rules for matrix elements between determinants formed by orthogonal orbitals. Diabatic and adiabatic curves have been analyzed for the two systems, and results compared with molecular orbital AM1 results. © 1992 John Wiley & Sons, Inc.
    Additional Material: 2 Ill.
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  • 8
    Electronic Resource
    Electronic Resource
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 31 (1993), S. 2123-2127 
    ISSN: 0887-624X
    Keywords: o-alklyaniline ; poly(o-alklyaniline) ; conducting polymer ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 2-Alkylanilines with alkyl groups in the range of 4-15 carbon atoms were synthesized via a known method as well as via a more general path which should allow the introduction of a larger variety of substituted alkyl groups into the ortho position of aniline, e.g., alkenyl or OH, NH2, COOH, and phenyl functionality. Polymerization was found to be achievable according to a method previously described for unsubstituted aniline, i.e., chemically with Cu(ClO4)2 · 6H2O in acetonitrile. Intrinsic viscosities of the obtained poly(2-alkylaniline)s lay between 0.10 and 0.26 dL/g (97% H2SO4 at 30°C). The dc conductivity of the HCl salts decreased with increasing length of the alkyl side chains from 1 S/cm (polyaniline) over 3 X 10-4 S/cm [poly(2-butylaniline)] to 1 X 10-6 S/cm poly(tridecylaniline). Further characterization of the polymers were performed by means of UV/VIS/NIR-and-IR spectroscopy, in dilute solutions or as KBr pellets, respectively, and by solubility tests. © 1993 John Wiley & Sons, Inc.
    Additional Material: 2 Ill.
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  • 9
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 32 (1988), S. 564-568 
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 6 Ill.
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  • 10
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 31 (1988), S. 215-219 
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In order to study the single-cell proteins and cellulase production, fungal degradation of α-cellulose was tested. Photochemical pretreatment of α-cellulose at λ 〉 254 nm increases by over 100% the cellulase production by Chrysonilia sitophila (TFB strain). This is reflected in a larger production of soluble proteins in the filtrate with higher cellulase activity when compared with unirradiated cellulose. Single-cell protein production (insoluble proteins) was also improved after preirradiation of cellulose or even on rice hull as the only carbon source after inoculation with the spore of C. sitophila. This pretreatment is a valuable method for increasing the digestibility of lignocellulosic materials.
    Additional Material: 5 Ill.
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