PR Twentyman

2.3k total citations · 1 hit paper
19 papers, 2.0k citations indexed

About

PR Twentyman is a scholar working on Molecular Biology, Oncology and Pediatrics, Perinatology and Child Health. According to data from OpenAlex, PR Twentyman has authored 19 papers receiving a total of 2.0k indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Molecular Biology, 12 papers in Oncology and 2 papers in Pediatrics, Perinatology and Child Health. Recurrent topics in PR Twentyman's work include Drug Transport and Resistance Mechanisms (9 papers), Cancer therapeutics and mechanisms (7 papers) and DNA Repair Mechanisms (2 papers). PR Twentyman is often cited by papers focused on Drug Transport and Resistance Mechanisms (9 papers), Cancer therapeutics and mechanisms (7 papers) and DNA Repair Mechanisms (2 papers). PR Twentyman collaborates with scholars based in United Kingdom and United States. PR Twentyman's co-authors include M Luscombe, Paul Workman, J G Reeve, H J Broxterman, C. H. M. Versantvoort, Tanya Bagrij, P.H. Rabbitts, K A Wright, T Rhodes and G. Koch and has published in prestigious journals such as British Journal of Cancer.

In The Last Decade

PR Twentyman

19 papers receiving 1.9k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

A study of some variables in a tetrazolium dye (MTT) based assay for cell growth and chemosensitivity

1987 861 citations PR Twentyman, M Luscombe British Journal of Cancer profile →

Peers

Countries citing papers authored by PR Twentyman

Since Specialization

Citations

This map shows the geographic impact of PR Twentyman's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by PR Twentyman with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites PR Twentyman more than expected).

Fields of papers citing papers by PR Twentyman

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by PR Twentyman. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by PR Twentyman. The network helps show where PR Twentyman may publish in the future.

Co-authorship network of co-authors of PR Twentyman

This figure shows the co-authorship network connecting the top 25 collaborators of PR Twentyman. A scholar is included among the top collaborators of PR Twentyman based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with PR Twentyman. PR Twentyman is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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19 of 19 papers shown

#	Work	Indexed citations
1	Reversal of P-glycoprotein-mediated multidrug resistance by XR9051, a novel diketopiperazine derivative 1998 ·British Journal of Cancer ·(unknown), (unknown), Richard Callaghan, J. A. Holmes, Karen H. Martin, M Luscombe, Prakash Mistry, Hamish Ryder, Alistair Stewart, Peter Charlton, PR Twentyman, (unknown)	43
2	Regulation by glutathione of drug transport in multidrug-resistant human lung tumour cell lines overexpressing multidrug resistance-associated protein 1995 ·British Journal of Cancer ·C. H. M. Versantvoort, H J Broxterman, Tanya Bagrij, (unknown), PR Twentyman	189
3	Drug Resistance in Oncology 1994 ·British Journal of Cancer ·PR Twentyman	138
4	Examination by laser scanning confocal fluorescence imaging microscopy of the subcellular localisation of anthracyclines in parent and multidrug resistant cell lines 1993 ·British Journal of Cancer ·(unknown), (unknown), PR Twentyman, Paul Workman	133
5	A Dictionary of Modern Medicine 1993 ·British Journal of Cancer ·PR Twentyman	10
6	The Basic Science of Oncology. 2nd Edition 1993 ·British Journal of Cancer ·PR Twentyman	1
7	Effects of cyclosporin A and a non-immunosuppressive analogue, O-acetyl cyclosporin A, upon the growth of parent and multidrug resistant human lung cancer cells in vitro 1992 ·British Journal of Cancer ·PR Twentyman, K A Wright, (unknown)	22
8	A study of ethacrynic acid as a potential modifier of melphalan and cisplatin sensitivity in human lung cancer parental and drug-resistant cell lines 1992 ·British Journal of Cancer ·T Rhodes, PR Twentyman	27
9	Differential recognition of mdr1a and mdr1b gene products in multidrug resistant mouse tumour cell lines by different monoclonal antibodies 1992 ·British Journal of Cancer ·(unknown), PR Twentyman	23
10	Retention of activity by selected anthracyclines in a multidrug resistant human large cell lung carcinoma line without P-glycoprotein hyperexpression 1991 ·British Journal of Cancer ·(unknown), Paul Workman, PR Twentyman	52
11	Chemosensitisation by verapamil and cyclosporin A in mouse tumour cells expressing different levels of P-glycoprotein and CP22 (sorcin) 1990 ·British Journal of Cancer ·PR Twentyman, J G Reeve, G. Koch, K A Wright	54
12	Non-P-glycoprotein-mediated multidrug resistance with reduced EGF receptor expression in a human large cell lung cancer cell line 1990 ·British Journal of Cancer ·J G Reeve, P.H. Rabbitts, PR Twentyman	40
13	Reduced nuclear binding of a DNA minor groove ligand (Hoechst 33342) and its impact on cytotoxicity in drug resistant murine cell lines 1990 ·British Journal of Cancer ·(unknown), (unknown), PR Twentyman, (unknown)	14
14	The MTT assay underestimates the growth inhibitory effects of interferons 1989 ·British Journal of Cancer ·(unknown), PR Twentyman, (unknown)	153
15	Amplification and expression of mdr1 gene in a multidrug resistant variant of small cell lung cancer cell line NCI-H69 1989 ·British Journal of Cancer ·J G Reeve, P.H. Rabbitts, PR Twentyman	43
16	A study of some variables in a tetrazolium dye (MTT) based assay for cell growth and chemosensitivity breakdown → 1987 ·British Journal of Cancer ·PR Twentyman, M Luscombe	861
17	Evidence that multidrug resistance in Chinese hamster ovary cells is associated with alterations in the endoplasmic reticulum 1987 ·British Journal of Cancer ·J G Reeve, (unknown), PR Twentyman	3
18	Use of a tritiated thymidine suicide technique in the study of the cytotoxic drug response of cells located at different depths within multicellular spheroids 1987 ·British Journal of Cancer ·(unknown), PR Twentyman	8
19	Cyclosporin A and its analogues as modifiers of adriamycin and vincristine resistance in a multi-drug resistant human lung cancer cell line 1987 ·British Journal of Cancer ·PR Twentyman, (unknown), (unknown)	173

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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