Sam Helgerson

1.6k total citations
38 papers, 1.3k citations indexed

About

Sam Helgerson is a scholar working on Cellular and Molecular Neuroscience, Molecular Biology and Surgery. According to data from OpenAlex, Sam Helgerson has authored 38 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Cellular and Molecular Neuroscience, 12 papers in Molecular Biology and 6 papers in Surgery. Recurrent topics in Sam Helgerson's work include Photoreceptor and optogenetics research (11 papers), Neuroscience and Neuropharmacology Research (8 papers) and Periodontal Regeneration and Treatments (5 papers). Sam Helgerson is often cited by papers focused on Photoreceptor and optogenetics research (11 papers), Neuroscience and Neuropharmacology Research (8 papers) and Periodontal Regeneration and Treatments (5 papers). Sam Helgerson collaborates with scholars based in United States, Austria and Netherlands. Sam Helgerson's co-authors include Isabelle Catelas, Elisabeth M. Inman, Reiner Spaethe, C. Wong, Bill Tawil, James Dunn, Benjamin M. Wu, Pete Lollar, Hani N. Sabbah and Ernest T. Parker and has published in prestigious journals such as Journal of Biological Chemistry, Circulation and Journal of Clinical Investigation.

In The Last Decade

Sam Helgerson

38 papers receiving 1.2k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Sam Helgerson United States 19 346 304 266 235 227 38 1.3k
Deborah Philp United States 18 516 1.5× 252 0.8× 247 0.9× 27 0.1× 336 1.5× 22 1.4k
Grenham W. Ireland United Kingdom 21 558 1.6× 297 1.0× 101 0.4× 40 0.2× 153 0.7× 34 1.6k
Xin Yan China 28 1.2k 3.5× 149 0.5× 108 0.4× 101 0.4× 102 0.4× 88 2.2k
Jozef Bízik Slovakia 23 537 1.6× 86 0.3× 58 0.2× 153 0.7× 155 0.7× 64 1.4k
Greta M. Lee United States 20 564 1.6× 271 0.9× 135 0.5× 22 0.1× 388 1.7× 29 1.8k
Rachel L. Lewis United States 12 1.6k 4.6× 368 1.2× 164 0.6× 102 0.4× 481 2.1× 18 2.1k
Sarah B. Peters United States 11 375 1.1× 322 1.1× 242 0.9× 21 0.1× 340 1.5× 22 1.2k
Stéphanie Pellegrin United Kingdom 16 555 1.6× 124 0.4× 39 0.1× 102 0.4× 143 0.6× 20 1.3k
Kristine Lewandowska United States 18 435 1.3× 70 0.2× 89 0.3× 142 0.6× 155 0.7× 26 1.1k
John Wardale United Kingdom 20 588 1.7× 309 1.0× 186 0.7× 21 0.1× 167 0.7× 25 1.4k

Countries citing papers authored by Sam Helgerson

Since Specialization
Citations

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

Fields of papers citing papers by Sam Helgerson

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sam Helgerson. 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 Sam Helgerson. The network helps show where Sam Helgerson may publish in the future.

Co-authorship network of co-authors of Sam Helgerson

This figure shows the co-authorship network connecting the top 25 collaborators of Sam Helgerson. A scholar is included among the top collaborators of Sam Helgerson 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 Sam Helgerson. Sam Helgerson 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.
Sabbah, Hani N., Mengjun Wang, Ramesh C. Gupta, et al.. (2013). Augmentation of Left Ventricular Wall Thickness With Alginate Hydrogel Implants Improves Left Ventricular Function and Prevents Progressive Remodeling in Dogs With Chronic Heart Failure. JACC Heart Failure. 1(3). 252–258. 68 indexed citations
2.
Ilsar, Itamar, Mengjun Wang, Michael S. Sabbah, et al.. (2010). Acute Left Ventricular Reconstruction With Circumferential Mid-Ventricular Intramyocardial Injections of Alginate Hydrogel in Dogs with Chronic Heart Failure. Journal of Cardiac Failure. 16(8). S42–S43. 2 indexed citations
3.
Sabbah, Hani N., Mengjun Wang, Alice Jiang, et al.. (2009). Abstract 4050: Circumferential Mid-Ventricular Intramyocardial Injections of Alginate Hydrogel Improve Left Ventricular Function and Prevent Progressive Remodeling in Dogs With Chronic Heart Failure. Circulation. 7 indexed citations
4.
Catelas, Isabelle, et al.. (2008). Controlled Release of Bioactive Transforming Growth Factor Beta-1 from Fibrin Gels In Vitro. Tissue Engineering Part C Methods. 14(2). 119–128. 57 indexed citations
5.
Catelas, Isabelle, et al.. (2008). Controlled Release of Bioactive Transforming Growth Factor Beta-1 from Fibrin Gels In Vitro. Tissue Engineering Part C Methods. 2883042207–2883042207. 1 indexed citations
6.
Mittermayr, Rainer, et al.. (2008). Sustained (rh)VEGF165release from a sprayed fibrin biomatrix induces angiogenesis, up‐regulation of endogenous VEGF‐R2, and reduces ischemic flap necrosis. Wound Repair and Regeneration. 16(4). 542–550. 38 indexed citations
7.
Chan, Connie, et al.. (2007). Fibrin as a delivery vehicle for active macrophage activator lipoprotein‐2 peptide: in vitro studies. Wound Repair and Regeneration. 15(4). 521–529. 7 indexed citations
8.
Catelas, Isabelle, et al.. (2006). Human Mesenchymal Stem Cell Proliferation and Osteogenic Differentiation in Fibrin Gels in Vitro. Tissue Engineering. 0(0). 2495472860–2495472860. 6 indexed citations
9.
Catelas, Isabelle, et al.. (2006). Human Mesenchymal Stem Cell Proliferation and Osteogenic Differentiation in Fibrin Gels in Vitro. Tissue Engineering. 0(0). 2495472832–2495472832. 2 indexed citations
10.
Catelas, Isabelle, et al.. (2006). Human Mesenchymal Stem Cell Proliferation and Osteogenic Differentiation in Fibrin Gels in Vitro. Tissue Engineering. 12(8). 2385–2396. 178 indexed citations
11.
Swain, Steve D., Sam Helgerson, Angela R. Davis, Laura K. Nelson, & Mark T. Quinn. (1997). Analysis of Activation-induced Conformational Changes in p47 Using Tryptophan Fluorescence Spectroscopy. Journal of Biological Chemistry. 272(47). 29502–29510. 91 indexed citations
12.
Lake, Douglas F., et al.. (1997). Physical and Epitope Analysis of a Recombinant Human T-Cell Receptor Vα/Vβ Construct Support the Similarity to Immunoglobulin. Journal of Protein Chemistry. 16(4). 309–320. 8 indexed citations
13.
Lollar, Pete, Ernest T. Parker, Joseph E. Curtis, et al.. (1994). Inhibition of human factor VIIIa by anti-A2 subunit antibodies.. Journal of Clinical Investigation. 93(6). 2497–2504. 72 indexed citations
14.
Helgerson, Sam, et al.. (1992). Enrichment of bacteriorhodopsin with isotopically labeled amino acids by biosynthetic incorporation in Halobacterium halobium. Canadian Journal of Microbiology. 38(11). 1181–1185. 15 indexed citations
15.
Helgerson, Sam, et al.. (1989). The transverse location of the retinal chromophore in the purple membrane by diffusion-enhanced energy transfer. Journal of Molecular Biology. 209(4). 683–701. 11 indexed citations
16.
Ross, Paul, Sam Helgerson, Larry J. W. Miercke, & Edward A. Dratz. (1989). Isoelectric focusing studies of bacteriorhodopsin. Biochimica et Biophysica Acta (BBA) - General Subjects. 991(1). 134–140. 12 indexed citations
17.
Dancsházy, Z., Sam Helgerson, & Walther Stoeckenius. (1983). Coupling between the bacteriorhodopsin photocycle kinetics and the protonmotive force. I. Single flash measurements in Halobacterium halobium cells. Photobiochemistry and photobiophysics.. 5(6). 347–357. 11 indexed citations
18.
19.
Lanyi, Janos Κ., Sam Helgerson, & Melvin Silverman. (1979). Relationship between proton motive force and potassium Ion transport in Halobacterium halobium envelope vesicles. Archives of Biochemistry and Biophysics. 193(2). 329–339. 28 indexed citations
20.
Helgerson, Sam, William A. Cramer, & D. James Morré. (1976). Evidence for an Increase in Microviscosity of Plasma Membranes from Soybean Hypocotyls Induced by the Plant Hormone, Indole-3-Acetic Acid. PLANT PHYSIOLOGY. 58(4). 548–551. 29 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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