O Kelber

2.2k total citations · 1 hit paper
119 papers, 1.7k citations indexed

About

O Kelber is a scholar working on Gastroenterology, Surgery and Plant Science. According to data from OpenAlex, O Kelber has authored 119 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 44 papers in Gastroenterology, 32 papers in Surgery and 25 papers in Plant Science. Recurrent topics in O Kelber's work include Gastrointestinal motility and disorders (37 papers), Helicobacter pylori-related gastroenterology studies (24 papers) and Respiratory and Cough-Related Research (16 papers). O Kelber is often cited by papers focused on Gastrointestinal motility and disorders (37 papers), Helicobacter pylori-related gastroenterology studies (24 papers) and Respiratory and Cough-Related Research (16 papers). O Kelber collaborates with scholars based in Germany, Egypt and United States. O Kelber's co-authors include D Weiser, Veronika Butterweck, S Okpanyi, K Nieber, H Abdel-Aziz, C Vissiennon, Mohamed T. Khayyal, Ralf Kinscherf, Stuart M. Brierley and Ramy M. Ammar and has published in prestigious journals such as Gastroenterology, PLoS ONE and Nutrients.

In The Last Decade

O Kelber

110 papers receiving 1.6k 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.

Gut Microbiome–Brain Alliance: A Landscape View into Mental and Gastrointestinal Health and Disorders

2023 103 citations Janet M. Sasso, Ramy M. Ammar et al. ACS Chemical Neuroscience profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
O Kelber Germany	23	451	441	363	344	287	119	1.7k
Raquel Abalo Spain	30	335 0.7×	596 1.4×	146 0.4×	177 0.5×	389 1.4×	100	2.6k
Nobutomo Ikarashi Japan	22	244 0.5×	839 1.9×	111 0.3×	170 0.5×	204 0.7×	103	1.8k
Chengyuan Lin Hong Kong	28	155 0.3×	739 1.7×	146 0.4×	235 0.7×	193 0.7×	75	1.9k
Ian M Coupar Australia	24	589 1.3×	747 1.7×	82 0.2×	185 0.5×	318 1.1×	104	2.2k
Anthony Krantis Canada	26	415 0.9×	436 1.0×	220 0.6×	285 0.8×	244 0.9×	77	2.1k
Arun Chaudhury United States	14	234 0.5×	445 1.0×	72 0.2×	147 0.4×	353 1.2×	28	1.7k
Yusuf Öztürk Türkiye	28	94 0.2×	678 1.5×	287 0.8×	889 2.6×	277 1.0×	125	2.7k
Maciej Sałaga Poland	27	328 0.7×	618 1.4×	121 0.3×	88 0.3×	309 1.1×	78	1.8k
Danuta Drozdowicz Poland	36	338 0.7×	641 1.5×	105 0.3×	170 0.5×	1.2k 4.3×	112	3.2k
Ester Pagano Italy	30	64 0.1×	810 1.8×	253 0.7×	534 1.6×	205 0.7×	56	2.6k

Countries citing papers authored by O Kelber

Since Specialization

Citations

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

Fields of papers citing papers by O Kelber

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of O Kelber

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

All Works

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20 of 20 papers shown

Pferschy‐Wenzig, Eva‐Maria, et al.. (2025). Bidirectional interactions between St. John´s wort and gut microbiome: Potential implications on gut-brain-axis. Biomedicine & Pharmacotherapy. 187. 118111–118111.

Hensel, Andreas, Rudolf Bauer, Michael Heinrich, et al.. (2024). Rationalising Optimal Dosing of Phytotherapeutics For Use In Children: Current Status – Potential Solutions – Actions Needed. Planta Medica. 90(6). 416–425. 1 indexed citations

Sasso, Janet M., et al.. (2023). Gut Microbiome–Brain Alliance: A Landscape View into Mental and Gastrointestinal Health and Disorders. ACS Chemical Neuroscience. 14(10). 1717–1763. 103 indexed citations breakdown →

Nieber, K, E Raskopf, O Kelber, et al.. (2019). Pharmaco-epidemiological research on herbal medicinal products in the paediatric population: data from the PhytoVIS study. European Journal of Pediatrics. 179(3). 507–512. 8 indexed citations

Madisch, Ahmed, B Vinson, H Abdel-Aziz, et al.. (2017). Modulation of gastrointestinal motility beyond metoclopramide and domperidone. Wiener Medizinische Wochenschrift. 167(7-8). 160–168. 17 indexed citations

Wegener, Tankred, et al.. (2016). Randomized double-blind controlled clinical trials with herbal preparations of Serenoa repens fruits in treatment of lower urinary tract symptoms. Wiener Medizinische Wochenschrift. 167(7-8). 177–182. 1 indexed citations

Kelber, O, Barbara Steinhoff, Andreas Biller, et al.. (2016). Ethanol in herbal medicinal products for children. Wiener Medizinische Wochenschrift. 167(7-8). 183–188. 12 indexed citations

Abdel-Aziz, H, Walaa Wadie, Hala F. Zaki, et al.. (2015). Novel sequential stress model for functional dyspepsia: Efficacy of the herbal preparation STW5. Phytomedicine. 22(5). 588–595. 12 indexed citations

Stange, Rainer, Juergen Mueller, O Kelber, & Bernhard Uehleke. (2014). Willow Bark Extract STW 33-I is Safe and Effective in the Long-Term Treatment of Outpatients with Chronic Musculosceletal Pain. The Journal of Alternative and Complementary Medicine. 20(5). A83–A83.

10.

Kelber, O, Tankred Wegener, Barbara Steinhoff, et al.. (2014). Assessment of genotoxicity of herbal medicinal products: Application of the “bracketing and matrixing” concept using the example of Valerianae radix (valerian root). Phytomedicine. 21(8-9). 1124–1129. 18 indexed citations

11.

Uehleke, Bernhard, Jürgen Müller, Rainer Stange, O Kelber, & Jörg Melzer. (2013). Willow bark extract STW 33-I in the long-term treatment of outpatients with rheumatic pain mainly osteoarthritis or back pain. Phytomedicine. 20(11). 980–984. 18 indexed citations

12.

Ulrich‐Merzenich, G, O Kelber, Axel Freischmidt, et al.. (2012). Novel neurological and immunological targets for salicylate-based phytopharmaceuticals and for the anti-depressant imipramine. Phytomedicine. 19(10). 930–939. 19 indexed citations

13.

Wadie, Walaa, H Abdel-Aziz, Hala F. Zaki, et al.. (2012). STW 5 is effective in dextran sulfate sodium-induced colitis in rats. International Journal of Colorectal Disease. 27(11). 1445–1453. 40 indexed citations

14.

Ulrich‐Merzenich, G, O Kelber, Axel Freischmidt, et al.. (2011). Prediction of adverse events by in vivo gene expression profiling exemplified for phytopharmaceuticals containing salicylates and the antidepressant imipramine. Phytomedicine. 19(3-4). 322–329. 7 indexed citations

15.

Bonaterra, Gabriel A., et al.. (2010). Anti-inflammatory effects of the willow bark extract STW 33-I (Proaktiv®) in LPS-activated human monocytes and differentiated macrophages. Phytomedicine. 17(14). 1106–1113. 63 indexed citations

16.

Abdel-Aziz, H, Hala F. Zaki, Winfried Neuhuber, et al.. (2010). Effect of an Herbal Preparation, STW 5, in an Acute Model of Reflux Oesophagitis in Rats. Journal of Pharmacological Sciences. 113(2). 134–142. 19 indexed citations

17.

Mueller, Mario H., Qian Gong, O Kelber, et al.. (2009). A novel herbal preparation desensitizes mesenteric afferents to bradykinin in the rat small intestine. Neurogastroenterology & Motility. 21(4). 467–476. 10 indexed citations

18.

Khayyal, Mohamed T., et al.. (2006). Mechanisms involved in the gastro-protective effect of STW 5 (Iberogast®) and its components against ulcers and rebound acidity. Phytomedicine. 13. 56–66. 42 indexed citations

19.

Glatzle, Jörg, D Weiser, O Kelber, et al.. (2006). STW 5 (Iberogast®) reduces afferent sensitivity in the rat small intestine. Phytomedicine. 13. 100–106. 20 indexed citations

20.

Heinle, H., O Kelber, D Weiser, et al.. (2002). Intimal plaque development and oxidative stress in cholesterol‐induced atherosclerosis in New Zealand rabbits. Acta Physiologica Scandinavica. 176(2). 101–107. 7 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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