Per Wiik Johansen

439 total citations
20 papers, 352 citations indexed

About

Per Wiik Johansen is a scholar working on Endocrinology, Diabetes and Metabolism, Molecular Biology and Pharmacology. According to data from OpenAlex, Per Wiik Johansen has authored 20 papers receiving a total of 352 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Endocrinology, Diabetes and Metabolism, 5 papers in Molecular Biology and 4 papers in Pharmacology. Recurrent topics in Per Wiik Johansen's work include Growth Hormone and Insulin-like Growth Factors (5 papers), Pharmacogenetics and Drug Metabolism (4 papers) and Receptor Mechanisms and Signaling (3 papers). Per Wiik Johansen is often cited by papers focused on Growth Hormone and Insulin-like Growth Factors (5 papers), Pharmacogenetics and Drug Metabolism (4 papers) and Receptor Mechanisms and Signaling (3 papers). Per Wiik Johansen collaborates with scholars based in Norway, Czechia and India. Per Wiik Johansen's co-authors include Kaare M. Gautvik, Gustav Lehne, Egil Haug, Jan O. Gordeladze, Judith A. Johnson, B.V. Johansen, Tore Skotland, Sigrid Narum, Odd Brørs and Marianne Kristiansen Kringen and has published in prestigious journals such as European Journal of Biochemistry, Life Sciences and Clinical Pharmacology & Therapeutics.

In The Last Decade

Per Wiik Johansen

20 papers receiving 339 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Per Wiik Johansen Norway 11 74 69 64 51 42 20 352
Ciarán Fisher United Kingdom 12 116 1.6× 43 0.6× 34 0.5× 41 0.8× 52 1.2× 32 461
Manar G. Helal Egypt 12 98 1.3× 65 0.9× 73 1.1× 50 1.0× 11 0.3× 26 395
Goro Kominami Japan 7 85 1.1× 20 0.3× 22 0.3× 41 0.8× 13 0.3× 33 452
Monika Patel India 10 146 2.0× 66 1.0× 74 1.2× 77 1.5× 14 0.3× 24 402
Zhengzhong Wang China 13 155 2.1× 58 0.8× 75 1.2× 42 0.8× 9 0.2× 21 447
Edward A. Sasse United States 9 106 1.4× 113 1.6× 45 0.7× 29 0.6× 11 0.3× 17 471
Xiaoyan Yang China 14 137 1.9× 28 0.4× 36 0.6× 50 1.0× 14 0.3× 42 545
Dilip Kumar Roy India 11 145 2.0× 45 0.7× 17 0.3× 217 4.3× 40 1.0× 23 595
Toshiyuki Shoda Japan 12 205 2.8× 76 1.1× 58 0.9× 85 1.7× 25 0.6× 27 542
Zhengbo Duanmu United States 12 132 1.8× 90 1.3× 162 2.5× 56 1.1× 7 0.2× 18 423

Countries citing papers authored by Per Wiik Johansen

Since Specialization
Citations

This map shows the geographic impact of Per Wiik Johansen'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 Per Wiik Johansen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Per Wiik Johansen more than expected).

Fields of papers citing papers by Per Wiik Johansen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Per Wiik Johansen. 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 Per Wiik Johansen. The network helps show where Per Wiik Johansen may publish in the future.

Co-authorship network of co-authors of Per Wiik Johansen

This figure shows the co-authorship network connecting the top 25 collaborators of Per Wiik Johansen. A scholar is included among the top collaborators of Per Wiik Johansen 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 Per Wiik Johansen. Per Wiik Johansen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Havnes, Ingrid Amalia, Per Wiik Johansen, Astrid Bjørnebekk, et al.. (2024). Off-label use of clomiphene citrate to treat anabolic androgenic steroid induced hypogonadism upon cessation among men (CloTASH) – A pilot study protocol. MethodsX. 13. 102810–102810. 4 indexed citations
2.
Ræder, Johan, et al.. (2016). Fra ketobemidon til morfin eller oksykodon. Tidsskrift for Den norske legeforening. 136(18). 1518–1519. 1 indexed citations
3.
Narum, Sigrid, et al.. (2010). Warfarin‐associated bleeding events and concomitant use of potentially interacting medicines reported to the Norwegian spontaneous reporting system. British Journal of Clinical Pharmacology. 71(2). 254–262. 20 indexed citations
4.
Kringen, Marianne Kristiansen, Sigrid Narum, I. Lygren, et al.. (2010). Reduced Platelet Function and Role of Drugs in Acute Gastrointestinal Bleeding. Basic & Clinical Pharmacology & Toxicology. 108(3). 194–201. 28 indexed citations
5.
Kringen, Marianne Kristiansen, Kari Bente Foss Haug, Sigrid Narum, et al.. (2010). Genetic Variation of VKORC1 and CYP4F2 Genes Related to Warfarin Maintenance Dose in Patients with Myocardial Infarction. BioMed Research International. 2011(1). 22 indexed citations
6.
Haug, Kari Bente Foss, Marianne Kristiansen Kringen, Sigrid Narum, et al.. (2008). Warfarin dose and INR related to genotypes of CYP2C9 and VKORC1 in patients with myocardial infarction. Thrombosis Journal. 6(1). 7–7. 13 indexed citations
7.
8.
Johansen, Per Wiik, Joel C. Glover, Vilborg Matre, et al.. (2005). Thyrotrophin-releasing hormone receptor 1 and prothyrotrophin-releasing hormone mRNA expression in the central nervous system are regulated by suckling in lactating rats. European Journal of Endocrinology. 152(5). 791–803. 3 indexed citations
9.
Lehne, Gustav, Bjørn Haneberg, Peter Gaustad, et al.. (2005). Oral administration of a new soluble branched β-1,3-D-glucan is well tolerated and can lead to increased salivary concentrations of immunoglobulin A in healthy volunteers. Clinical & Experimental Immunology. 143(1). 65–69. 56 indexed citations
10.
Melien, Øyvind, Per Wiik Johansen, Tone Westergren, & Hans Erik Rugstad. (2003). Vitamin K i matvarer og effekt av warfarin. Tidsskrift for Den Norske Laegeforening. 1 indexed citations
11.
Melien, Øyvind, Per Wiik Johansen, Tone Westergren, & Hans Erik Rugstad. (2003). [Vitamin K in food and the effect of warfarin].. PubMed. 123(13-14). 1862–3. 1 indexed citations
12.
Molden, Espen, Per Wiik Johansen, Stein Bergan, et al.. (2002). Pharmacokinetics of diltiazem and its metabolites in relation to CYP2D6 genotype. Clinical Pharmacology & Therapeutics. 72(3). 333–342. 40 indexed citations
13.
Johansen, Per Wiik, et al.. (2001). Specific combinations of G-protein subunits discriminate hormonal signalling in rat pituitary (GH3) cells in culture. Cellular Signalling. 13(4). 251–256. 8 indexed citations
14.
Johansen, Per Wiik, Ruth H. Paulssen, Trine Bjøro, Kaare M. Gautvik, & Jan O. Gordeladze. (2001). Distinct Guanine Nucleotide Binding Protein Alpha-Subunit Receptor Coupling in GH Cell Lines: <i>Effects of Bromocriptine and Hormones on Effector Enzyme Modulation</i>. Cellular Physiology and Biochemistry. 11(6). 339–352. 3 indexed citations
15.
Gordeladze, Jan O., Per Wiik Johansen, Ruth H. Paulssen, Eyvind J. Paulssen, & Kaare M. Gautvik. (1994). G-Proteins: implications for pathophysiology and disease. European Journal of Endocrinology. 131(6). 557–574. 23 indexed citations
16.
Paulssen, Ruth H., et al.. (1994). Cell‐specific expression and function of adenylyl cyclases in rat pituitary tumour cell lines. European Journal of Biochemistry. 222(1). 97–103. 17 indexed citations
17.
Johansen, Per Wiik, Olav Sand, Jens‐Gustav Iversen, Egil Haug, & Kaare M. Gautvik. (1986). Effects of bromocriptine on prolactin release, electrical membrane properties and transmembrane Ca2+ fluxes in cultured rat pituitary adenoma cells. European Journal of Endocrinology. 111(2). 185–192. 7 indexed citations
18.
Knudtzon, J, Per Wiik Johansen, Egil Haug, & Kaare M. Gautvik. (1986). Effects of hypersecretion of growth hormone and prolactin on plasma levels of glucagon and insulin in GH3-cell-tumor-bearing rats, and the influence of bromocriptine treatment. Life Sciences. 39(7). 617–621. 10 indexed citations
19.
Johansen, Per Wiik, O. P. F. Clausen, Egil Haug, S. Fossum, & Kaare M. Gautvik. (1985). Effects of bromocriptine on cell cycle distribution and cell morphology in cultured rat pituitary adenoma cells. European Journal of Endocrinology. 110(3). 319–328. 14 indexed citations
20.
Johansen, Per Wiik, Egil Haug, & Kaare M. Gautvik. (1985). Effects of bromocriptine on hormone production and cell growth in cultured rat pituitary cells. European Journal of Endocrinology. 110(2). 200–206. 22 indexed citations

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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