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Chavez F, Kelly T, Kunisch JR, Kurth A. Systems leadership doctor of nursing practice: global relevance. Int Nurs Rev 2019; 66:482-489. [PMID: 31206651 DOI: 10.1111/inr.12527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIM This article considers the systems leadership doctor of nursing practice degree as an option to increase nursing leadership roles and heighten presence at policy tables globally, particularly in low- and middle-income countries. Recent global reports emphasize core competencies needed for nursing leadership, particularly systems leadership and health policy, to successfully move the global health agenda forward. Using the Yale University School of Nursing programme as an exemplar, this paper is focused on the elements directly linked to leadership competencies and relevance of a systems leadership doctor of nursing practice programme globally. BACKGROUND/INTRODUCTION The dramatic growth and wide variability of doctor of nursing practice programmes offered in all 50 US States have generated questions and debate. According to the American Association of Colleges of Nursing as of May 2018, there are 121 schools that reported having a leadership focus in postmaster's doctor of nursing practice degree offering. Yet there has not been the same enthusiasm for development and implementation for a practice doctorate in nursing across the globe. SOURCES OF EVIDENCE A narrative literature review was conducted aimed at addressing the relevance of a practice doctorate globally. This analysis of the literature included a search of peer-reviewed and grey literature. Nursing school websites were visited, and opinions of nurse leaders and students were sought. In addition, global reports that supported nursing leadership and their role in policy development were reviewed. DISCUSSION/CONCLUSION Globally, nurses have a critical role in leading health systems. Developing a cadre of nurse leaders educated at the doctoral level who can communicate with policymakers and develop strategies to meet health systems' goals is necessary. IMPLICATIONS FOR NURSING, HEALTH AND EDUCATION POLICY In recent global health reports and campaigns, strengthening nursing leadership and presence at policymaking tables are recurring themes. Offering a systems leadership doctor of nursing practice degree is one viable option to increase doctorally prepared nurse leaders for nursing policy and practice engagement. This calls for work with country and regional governments, regulatory bodies and nursing associations to empower nursing to contribute fully.
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Affiliation(s)
- F Chavez
- Teaching Stream, Bloomberg Faculty of Nursing, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
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Chavez F, Mckinnon T. Innovations in global health education: A global interprofessional
collaboration. Ann Glob Health 2015. [DOI: 10.1016/j.aogh.2015.02.555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Yee S, Wilson G, Chavez F. SU-E-I-84: MRI Relaxation Properties of a Pre-Clinical Hypoxia-Sensitive MRI Contrast Agent. Med Phys 2014. [DOI: 10.1118/1.4888034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Brucher E, Cortes S, Chavez F, Sherry AD. Synthesis, equilibrium, and kinetic properties of the gadolinium(III) complexes of three triazacyclodecanetriacetate ligands. Inorg Chem 2002. [DOI: 10.1021/ic00009a027] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Urquiza M, Suarez JE, Cardenas C, Lopez R, Puentes A, Chavez F, Calvo JC, Patarroyo ME. Plasmodium falciparum AMA-1 erythrocyte binding peptides implicate AMA-1 as erythrocyte binding protein. Vaccine 2000; 19:508-13. [PMID: 11027815 DOI: 10.1016/s0264-410x(00)00185-7] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The role of AMA-1 during merozoite invasion has not yet been determined. However, reported experimental evidence suggests that this protein can be used, in particular as erythrocyte-binding protein, since, Fab fragments against this protein are able to block merozoite invasion. Using a previously described methodology, eight peptides with high binding activity to human erythrocyte, scattered along the different domains and having around 130 nM affinity constants, were identified in the Plasmodium falciparum AMA-1 protein. Their binding activity was sialic acid independent. Some of these peptides showed homology with the erythrocyte binding domains of one of the apical organelle protein family, MAEBL, identified in rodent malarial parasites. One of these peptides shares amino acid sequence with a previously reported B-cell epitope which induces antibodies to block parasite growth. The critical residues were identified for erythrocyte binding conserved peptides 4313 (DAEVAGTQYRLPSGKCPVFG), 4321 (VVDNWEKVCPRKNLQNAKFG), 4325 (MIKSAFLPTGAFKADRYKSH) and 4337 (WGEEKRASHTTPVLMEKPYY). All conserved peptides were able to block merozoite invasion of new RBC and development, suggesting that these peptides are involved in P. falciparum invasion.
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Affiliation(s)
- M Urquiza
- Instituto de Inmunología, Hospital San Juan de Dios, Universidad Nacional de Colombia, AA 44709, Bogota, Colombia.
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Chavez F, Lefebre N. Canada: using our most valuable natural resource to transform health care. Caring 2000; 19:10-2. [PMID: 11009776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Canada is recognized around the world as a wonderful outdoor experience with its wealth of natural resources and vibrancy. As Canada has evolved through the years, this vibrancy has continued to resonate through its communities and people. Historically, Canadians are well known for their pioneering and frontier spirit, which is a precious commodity. Now, that spirit, wisdom, talent, and potential of Canadians are being tapped to begin to change its health care system.
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Affiliation(s)
- F Chavez
- Saint Elizabeth Health Care in Markam, Ontario.
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Wang HJ, Zhang RH, Cole J, Chavez F. El Niño and the related phenomenon Southern Oscillation (ENSO): the largest signal in interannual climate variation. Proc Natl Acad Sci U S A 1999; 96:11071-2. [PMID: 10500128 PMCID: PMC34246 DOI: 10.1073/pnas.96.20.11071] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
El Niño and the related phenomenon Southern Oscillation (ENSO) is the strongest signal in the interannual variation of ocean-atmosphere system. It is mainly a tropical event but its impact is global. ENSO has been drawing great scientific attention in many international research programs. There has been an observational system for the tropical ocean, and scientists have known the climatologies of the upper ocean, developed some theories about the ENSO cycle, and established coupled ocean-atmosphere models to give encouraging predictions of ENSO for a 1-year lead. However, questions remain about the physical mechanisms for the ENSO cycle and its irregularity, ENSO-monsoon interactions, long-term variation of ENSO, and increasing the predictive skill of ENSO and its related climate variations.
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Affiliation(s)
- H J Wang
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
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Abstract
The purpose of this study was to examine the relationship between fathers' alcoholism and the quality of parent-infant interactions during free play. A related goal was to study the potential mediating or moderating role of comorbid parental psychopathology, such as depression and antisocial behavior, difficult infant temperament, and parental aggression. The sample consisted of 204 families with 12-month-old infants (104 alcoholic and 100 control families), recruited from New York State birth records. Results indicated that fathers' alcoholism was associated with a number of other risk factors (depression, antisocial behavior, and family aggression). Fathers' alcoholism was also associated with more negative father-infant interactions as indicated by lower paternal sensitivity, positive affect, verbalizations, higher negative affect, and lower infant responsiveness among alcoholic fathers. As expected, fathers' depression mediated the relationship between fathers' alcoholism and sensitivity, while maternal depression mediated the association between maternal alcohol problems and maternal sensitivity. Parents' psychopathology did not moderate the association between alcoholism and parent-infant interactions. The results from the present study suggest that the origins of risk for later maladjustment among children of alcoholic fathers are apparent as early as infancy and highlight the role of comorbid parental risk factors.
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Affiliation(s)
- R D Eiden
- Research Institute on Addictions, Buffalo, NY, USA.
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Gehrs M, Johnston N, Chavez F, Malone P, Lefebre N. Hospital-community job exchange: an innovative nursing staff development experiment. J Nurs Staff Dev 1997; 13:226-30. [PMID: 9287632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- M Gehrs
- Assertive Community Treatment Program, Wellesley Central-St. Michael's Hospitals Mental Health Service, Toronto, Ontario, Canada
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Martin JH, Coale KH, Johnson KS, Fitzwater SE, Gordon RM, Tanner SJ, Hunter CN, Elrod VA, Nowicki JL, Coley TL, Barber RT, Lindley S, Watson AJ, Van Scoy K, Law CS, Liddicoat MI, Ling R, Stanton T, Stockel J, Collins C, Anderson A, Bidigare R, Ondrusek M, Latasa M, Millero FJ, Lee K, Yao W, Zhang JZ, Friederich G, Sakamoto C, Chavez F, Buck K, Kolber Z, Greene R, Falkowski P, Chisholm SW, Hoge F, Swift R, Yungel J, Turner S, Nightingale P, Hatton A, Liss P, Tindale NW. Testing the iron hypothesis in ecosystems of the equatorial Pacific Ocean. Nature 1994. [DOI: 10.1038/371123a0] [Citation(s) in RCA: 990] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
One hundred twenty children aged 10 months to 16 years 9 months were included in three studies with lamotrigine (LTG): a single-blind study (n = 60), a pharmacokinetic study (n = 23), and a compassionate group (n = 37). At 3 months, 11 patients had become seizure-free and 34 had > 50% decrease in seizure frequency. The best results involved absence epilepsy, Lennox-Gastaut syndrome (LGS), and other symptomatic generalized epilepsy. Forty-two patients were followed > 1 year, 22 for a mean of 2.2 years, and there was no significant increase in seizure frequency as compared with 3-month follow-up. Fourteen patients became seizure-free for > 6 months; all except 1 had generalized epilepsy. For 12 patients, treatment could be reduced to monotherapy, but for those with valproate (VPA) comedication LTG dosage had to be increased; 25% of patients with VPA monotherapy exhibited skin rash, appearing 3-18 days after starting LTG. For 4 patients, LTG could be reintroduced after VPA was withdrawn. Ten patients had ataxia and/or drowsiness and 2 had vomiting. For all other patients, tolerance was excellent.
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Affiliation(s)
- E Schlumberger
- Neuropediatrics Department, Hôpital Saint Vincent de Paul, Paris, France
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Singer B, Kuśmierek JT, Folkman W, Chavez F, Dosanjh MK. Evidence for the mutagenic potential of the vinyl chloride induced adduct, N2, 3-etheno-deoxyguanosine, using a site-directed kinetic assay. Carcinogenesis 1991; 12:745-7. [PMID: 2013138 DOI: 10.1093/carcin/12.4.745] [Citation(s) in RCA: 86] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
N2,3-Ethenoguanine (epsilon G) is a product of vinyl chloride reaction with DNA in vivo and of its ultimate metabolite, chloroacetaldehyde, in vitro. The synthesis of the very labile 5'-triphosphate of N2,3-etheno-deoxyguanosine (epsilon dGuo) has made it possible to study the base pairing properties of this derivative placed opposite a defined normal base in a 25-base oligonucleotide template. The kinetic parameters, Km and Vmax were determined from elongation of a [32P]5'-end labeled primer annealed one base prior to the designated template base, epsilon G.T pairs, which would be mutagenic, were formed with a frequency 2- to 4-fold greater than the analogous wobble pair, G.T. The non-mutagenic pairing, epsilon G.C, occurs with a lower frequency than G.C but neither epsilon G.T or epsilon G.C constitute a significant block to replication. The frequency of epsilon G.T formation was similar with all polymerases tested: Escherichia coli DNA polymerase I (Klenow fragment), exonuclease-free Klenow, Drosophila melanogaster polymerase alpha-primase complex and human immunodeficient virus-I reverse transcriptase (HIV-RT). It is concluded that these prokaryotic and eukaryotic replicating enzymes apparently recognize the same structural features, and on replication G----A transitions would occur, which in turn, could initiate malignant transformation. In contrast to the G.T mismatch which is known to have a specific repair system, etheno derivatives are apparently not repaired in vivo.
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Affiliation(s)
- B Singer
- Donner Laboratory, Lawrence Berkeley Laboratory, University of California, Berkeley 94720
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Singer B, Chavez F, Goodman MF, Essigmann JM, Dosanjh MK. Effect of 3' flanking neighbors on kinetics of pairing of dCTP or dTTP opposite O6-methylguanine in a defined primed oligonucleotide when Escherichia coli DNA polymerase I is used. Proc Natl Acad Sci U S A 1989; 86:8271-4. [PMID: 2682644 PMCID: PMC298262 DOI: 10.1073/pnas.86.21.8271] [Citation(s) in RCA: 78] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
O6-Methylguanine (m6G) was incorporated site-specifically into two 25-base oligonucleotides differing only in the nucleotide on the 3' side of the modified base. Templates were primed with oligonucleotides terminating one or two bases prior to the site at which incorporation kinetics were to be investigated. Escherichia coli DNA polymerase I (Klenow fragment) was used to determine the apparent Km and relative Vmax of incorporation of either dCTP or dTTP opposite m6G or G. These data were used to calculate the relative frequency of incorporation opposite the m6G or the unmodified G. When the sequence was 3'-Cm6G-5', there was a 6- to 7-fold preference for formation of a m6G.T pair compared with m6G.C. The m6G.T frequency, based on Vmax/Km, was at least 50-fold greater than that of a G.T pair at the same site. Changing the sequence to 3'-Tm6G-5' had a marked effect on both Km and Vmax of pairs containing m6G and on the incorporation frequency of T opposite m6G, which was then only slightly favored over m6G.C. When replication was started directly opposite m6G, the kinetics appeared unaffected. These data indicate that the frequency of incorporation of C or T opposite m6G in a DNA template is dependent on the flanking neighbors and that a change of even a single base at the 3' position can have a major effect on mutagenic efficiency. Replication using Drosophila Pol alpha gave the same values for relative frequencies. Pairing of either C or T with m6G on the primer terminus did not significantly inhibit extension of the next normal base pair, in contrast to terminal mismatches of unmodified bases. It is concluded that, in the absence of repair, m6G can exhibit widely differing mutation frequencies which, in these experiments, can be as high as 85% of the replicated base. This variation in frequency of changed pairing could contribute to the occurrence of mutational "'hot spots" after replication of damaged DNA.
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Affiliation(s)
- B Singer
- Lawrence Berkeley Laboratory, University of California, Berkeley 94720
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Singer B, Chavez F, Spengler SJ, Kuśmierek JT, Mendelman L, Goodman MF. Comparison of polymerase insertion and extension kinetics of a series of O2-alkyldeoxythymidine triphosphates and O4-methyldeoxythymidine triphosphate. Biochemistry 1989; 28:1478-83. [PMID: 2719911 DOI: 10.1021/bi00430a008] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The effect of alkyl group size on ability to act as deoxythymidine triphosphate (dTTP) has been studied for the carcinogen products O2-methyl-, O2-ethyl-, and O2-isopropyl-dTTP by using three types of nucleic acids as template and DNA polymerase I (Pol I) or Klenow fragment as the polymerizing enzymes. Apparent Km and relative Vmax values were determined in primer extension on M13 DNA at a single defined site, in poly[d(A-T)], and in nicked DNA. These data are the basis for calculation of the relative rate of insertion opposite A, relative to dTTP. The insertion rate for any O2-alkyl-dTTP is much higher than for a mismatch between unmodified dNTPs. Unexpectedly, O2-isopropyl-dTTP is more efficiently utilized than O2-methyl-dTTP or O2-ethyl-dTTP on each of the templates. O2-isopropyl-dTTP also substitutes for dTTP over extended times of DNA synthesis at a rate only slightly lower than that of dTTP. Parallel experiments using O4-methyl-dTTP under the same conditions show that it is incorporated opposite A more frequently than is O2-methyl-dTTP. Therefore, both the ring position and the size of the alkyl group influence polymerase recognition. Once formed, all O2-alkyl-T.A termini permit elongation, as does O4-methyl-T.A. In contrast to the relative difficulty of incorporating the O-alkyl-dTTPs, formation of the following normal base pair (C.G) occurs rapidly when dGTP is present. This indicates that a single O-alkyl-T.A pair does not confer significant structural distortion recognized by Pol I.
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Affiliation(s)
- B Singer
- Donner Laboratory, Lawrence Berkeley Laboratory, University of California, Berkeley 94720
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Singer B, Spengler SJ, Chavez F, Kuśmierek JT. The vinyl chloride-derived nucleoside, N2,3-ethenoguanosine, is a highly efficient mutagen in transcription. Carcinogenesis 1987; 8:745-7. [PMID: 3581434 DOI: 10.1093/carcin/8.5.745] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
N2,3-Ethenoguanine (N2,3-epsilon G) was recently identified in the liver of vinyl chloride-exposed rats. We have now synthesized the nucleoside and the 5'-diphosphate which was copolymerized with CDP. The deoxypolynucleotide complement, synthesized by AMV reverse transcriptase contained, in addition to dG, dC and dT. The total pyrimidine content was approximately equivalent to the N2,3-epsilon G content of the template. Incorporation of dC is neither lethal nor mutagenic, while dT incorporation represents a mutagenic event, occurring with approximately 20% frequency. N2,3-epsilon G X dT base pairs can have two hydrogen bonds with minimal helical distortion, as is also the case for N2,3-epsilon G X C base pairs. N2,3-epsilon G is the only derivative formed in vivo by the human carcinogen, vinyl chloride, that can be shown to have a high probability of causing transitions which could initiate malignant transformation.
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Khan ZA, Hiriyanna KT, Chavez F, Fraenkel-Conrat H. RNA-directed RNA polymerases from healthy and from virus-infected cucumber. Proc Natl Acad Sci U S A 1986; 83:2383-6. [PMID: 3458203 PMCID: PMC323301 DOI: 10.1073/pnas.83.8.2383] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Much work has been done on the isolation, purification, and characterization of the RNA-directed RNA polymerase (EC 2.7.7.48) of cucumber mosaic virus (CMV)-infected cucumbers. Uninfected plants were reported to have no such enzyme, but we recently detected low levels of the activity in cucumber. Since tobacco and cowpea contain such an enzyme that is variably increased in amount by various virus (as well as viroid) infections, we assumed that this would also be the case upon CMV infection of cucumber. However, further purification and characterization of the RNA-directed RNA polymerases from healthy and from infected cucumber suggests that these are different enzymes. The presumed CMV replicase was obtained pure and consists of a major polypeptide of Mr 100,000 and minor components of Mr 110,000 and about 10,000. The Km is 5 microM ([3H]GTP) when tobacco mosaic virus RNA is used as template.
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Singer B, Chavez F, Spengler SJ. O4-Methyl-, O4-ethyl-, and O4-isopropylthymidine 5'-triphosphates as analogues of thymidine 5'-triphosphate: kinetics of incorporation by Escherichia coli DNA polymerase I. Biochemistry 1986; 25:1201-5. [PMID: 3516216 DOI: 10.1021/bi00354a001] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
O4-Methyl-, O4-ethyl-, and O4-isopropylthymidine 5'-triphosphates, which can be formed by N-nitroso carcinogens, were tested for their ability to substitute for thymidine 5'-triphosphate (dTTP) in synthesis catalyzed by Escherichia coli DNA polymerase I (Pol I) by using activated DNA or synthetic polymers as templates. All could substitute for dTTP for short periods, the rate and extent decreasing with the size of the alkyl group. Because the structure of O4-alkylthymidine does not permit normal hydrogen bond formation with deoxyadenosine, it was inferred that eventual formation of a poor or frayed primer end was responsible for termination of synthesis. Synthesis of polymers at temperatures ranging from 0 to 40 degrees C showed that the extent of incorporation using the O4-alkyl-dTTPs was favored, relative to dTTP, when the terminal helical structure was stabilized by low temperatures. Kmapp values were determined for each O4-alkyldeoxynucleoside 5'-triphosphate. These values were 0.7 microM for dTTP, 5 microM for methyl-dTTP, 11 microM for ethyl-dTTP, and 33 microM for isopropyl-dTTP. O4-Alkyl-dTTPs were tested for their ability to inhibit or compete with dTTP incorporation and found to have a minimal effect, even when present at high concentration. These experiments indicated that Pol I can incorporate deoxynucleotides with O4-alkyl substituents into an ordered DNA structure. A postulated base-pairing scheme with deoxyadenosine is described.
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Furlong NB, Sato J, Brown T, Chavez F, Hurlbert RB. Induction of limited DNA damage by the antitumor agent Cain's acridine. Cancer Res 1978; 38:1329-35. [PMID: 25133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Imperial ES, Belleza R, Asuncion Z, Chavez F, Guzman S. The performance of the heart as a pump. A study of the interrelationship of its determinants. J Philipp Med Assoc 1967; 43:9-30. [PMID: 6035739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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