Annette Janzen

3.6k total citations · 1 hit paper
40 papers, 1.3k citations indexed

About

Annette Janzen is a scholar working on Neurology, Neurology and Cellular and Molecular Neuroscience. According to data from OpenAlex, Annette Janzen has authored 40 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 37 papers in Neurology, 7 papers in Neurology and 5 papers in Cellular and Molecular Neuroscience. Recurrent topics in Annette Janzen's work include Parkinson's Disease Mechanisms and Treatments (33 papers), Neurological disorders and treatments (22 papers) and Botulinum Toxin and Related Neurological Disorders (9 papers). Annette Janzen is often cited by papers focused on Parkinson's Disease Mechanisms and Treatments (33 papers), Neurological disorders and treatments (22 papers) and Botulinum Toxin and Related Neurological Disorders (9 papers). Annette Janzen collaborates with scholars based in Germany, Netherlands and Italy. Annette Janzen's co-authors include Wolfgang H. Oertel, Urvashi Pandey, Brit Mollenhauer, Claudia Trenkwalder, Friederike Sixel‐Döring, Anna Heintz‐Buschart, Tamara Wicke, Paul Wilmes, Geert Mayer and Dávid Vadász and has published in prestigious journals such as Nature Communications, Biochemical Journal and SLEEP.

In The Last Decade

Annette Janzen

37 papers receiving 1.2k citations

Hit Papers

align trajectories sort by overperformance

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.

The nasal and gut microbiome in Parkinson's disease and idiopathic rapid eye movement sleep behavior disorder

2017 405 citations Anna Heintz‐Buschart, Urvashi Pandey et al. Movement Disorders profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Annette Janzen Germany	17	896	300	192	184	179	40	1.3k
Tatyana D. Fedorova Denmark	20	1.0k 1.1×	128 0.4×	373 1.9×	220 1.2×	272 1.5×	37	1.4k
Eva Schaeffer Germany	18	769 0.9×	192 0.6×	209 1.1×	145 0.8×	223 1.2×	44	1.1k
Laurène Leclair‐Visonneau France	20	861 1.0×	286 1.0×	173 0.9×	317 1.7×	360 2.0×	45	1.6k
Morten Gersel Stokholm Denmark	16	894 1.0×	232 0.8×	287 1.5×	192 1.0×	455 2.5×	28	1.6k
Claudio Ruffmann United Kingdom	18	999 1.1×	179 0.6×	213 1.1×	186 1.0×	330 1.8×	22	1.3k
Beatrice Heim Austria	14	706 0.8×	101 0.3×	258 1.3×	131 0.7×	170 0.9×	50	996
Alexandra Gaenslen Germany	20	1.0k 1.1×	99 0.3×	285 1.5×	156 0.8×	278 1.6×	30	1.4k
Ali Reza Noorian United States	14	578 0.6×	130 0.4×	310 1.6×	54 0.3×	115 0.6×	25	1.1k
Tenghong Lian China	14	385 0.4×	119 0.4×	92 0.5×	83 0.5×	136 0.8×	36	740
Tamara Wicke Germany	6	559 0.6×	262 0.9×	78 0.4×	74 0.4×	157 0.9×	9	781

Countries citing papers authored by Annette Janzen

Since Specialization

Citations

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

Fields of papers citing papers by Annette Janzen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Annette Janzen

This figure shows the co-authorship network connecting the top 25 collaborators of Annette Janzen. A scholar is included among the top collaborators of Annette Janzen 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 Annette Janzen. Annette Janzen 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

Oertel, Wolfgang H., Martin T. Henrich, Philipp T. Meyer, et al.. (2025). Acetyl-DL-leucine (Tanganil™) in three patients with advanced multiple system atrophy. BMC Neurology. 25(1). 407–407.

Carli, Giulia, et al.. (2025). Parkinson’s Disease-Related pattern in isolated REM sleep behaviour disorder as a prodromal progression marker: 8-Year Follow-Up changes assessed at three time points. European Journal of Nuclear Medicine and Molecular Imaging. 52(10). 3550–3556. 1 indexed citations

Coe, Brian C., Donald C. Brien, Jeff Huang, et al.. (2025). Saccade, pupil, and blink abnormalities in prodromal and manifest alpha-synucleinopathies. Journal of Parkinson s Disease. 15(2). 300–310. 1 indexed citations

Oertel, Wolfgang H., Annette Janzen, Martin T. Henrich, et al.. (2024). Acetyl-DL-leucine in two individuals with REM sleep behavior disorder improves symptoms, reverses loss of striatal dopamine-transporter binding and stabilizes pathological metabolic brain pattern—case reports. Nature Communications. 15(1). 7619–7619. 11 indexed citations

Holtbernd, Florian, Christian Hohenfeld, Wolfgang H. Oertel, et al.. (2024). The functional brain connectome in isolated rapid eye movement sleep behavior disorder and Parkinson’s disease. Sleep Medicine. 117. 184–191. 3 indexed citations

Menzler, Katja, et al.. (2023). Undiagnosed obstructive sleep apnea syndrome as a treatable cause of new‐onset sleepiness in some post‐COVID patients. European Journal of Neurology. 31(3). e16159–e16159. 7 indexed citations

Oertel, Wolfgang H., Marcus Belke, Marcus M. Unger, et al.. (2023). Reduced Gastric Contraction in Rapid‐Eye‐Movement Sleep Behavior Disorder and De Novo Parkinson's Disease. Movement Disorders. 39(1). 53–63. 2 indexed citations

Carli, Giulia, Sanne K. Meles, Annette Janzen, et al.. (2023). Occipital hypometabolism is a risk factor for conversion to Parkinson’s disease in isolated REM sleep behaviour disorder. European Journal of Nuclear Medicine and Molecular Imaging. 50(11). 3290–3301. 9 indexed citations

Meles, Sanne K., Remco J. Renken, Fransje E. Reesink, et al.. (2022). FDG-PET combined with learning vector quantization allows classification of neurodegenerative diseases and reveals the trajectory of idiopathic REM sleep behavior disorder. Computer Methods and Programs in Biomedicine. 225. 107042–107042. 18 indexed citations

10.

Oertel, Wolfgang H., Brian J. White, Donald C. Brien, et al.. (2022). Eye tracking identifies biomarkers in α-synucleinopathies versus progressive supranuclear palsy. Journal of Neurology. 269(9). 4920–4938. 16 indexed citations

11.

Janzen, Annette, et al.. (2021). Increased muscle sympathetic nerve activity and impaired baroreflex control in isolated REM-sleep behavior disorder. Clinical Neurophysiology. 132(7). 1537–1542. 2 indexed citations

12.

Oertel, Wolfgang H., Martin T. Henrich, Annette Janzen, & Fanni F. Geibl. (2019). The locus coeruleus: Another vulnerability target in Parkinson's disease. Movement Disorders. 34(10). 1423–1429. 35 indexed citations

13.

Donadio, Vincenzo, Kathrin Doppler, Alex Incensi, et al.. (2019). Abnormal α‐synuclein deposits in skin nerves: intra‐ and inter‐laboratory reproducibility. European Journal of Neurology. 26(10). 1245–1251. 41 indexed citations

14.

Meles, Sanne K., Remco J. Renken, Annette Janzen, et al.. (2018). The Metabolic Pattern of Idiopathic REM Sleep Behavior Disorder Reflects Early-Stage Parkinson Disease. Journal of Nuclear Medicine. 59(9). 1437–1444. 82 indexed citations

15.

Doppler, Kathrin, Dávid Vadász, Annette Janzen, et al.. (2017). Dermal phospho-alpha-synuclein deposits confirm REM sleep behaviour disorder as prodromal Parkinson’s disease. Acta Neuropathologica. 133(4). 535–545. 170 indexed citations

16.

Heintz‐Buschart, Anna, Urvashi Pandey, Tamara Wicke, et al.. (2017). The nasal and gut microbiome in Parkinson's disease and idiopathic rapid eye movement sleep behavior disorder. Movement Disorders. 33(1). 88–98. 405 indexed citations breakdown →

17.

Lange, M., Nina Zech, Milena Seemann, et al.. (2015). Anesthesiologic regimen and intraoperative delirium in deep brain stimulation surgery for Parkinson's disease. Journal of the Neurological Sciences. 355(1-2). 168–173. 17 indexed citations

18.

Schlaier, J., Annette Janzen, Claudia Fellner, et al.. (2014). Deep brain stimulation in Parkinson’s disease: motor effects relative to the MRI-defined STN. Neurosurgical Review. 37(3). 461–471. 9 indexed citations

19.

Gaßner, Heiko, Annette Janzen, Ansgar Schwirtz, & Petra Jansen. (2014). Random Whole Body Vibration over 5 Weeks Leads to Effects Similar to Placebo: A Controlled Study in Parkinson’s Disease. Parkinson s Disease. 2014. 1–9. 16 indexed citations

20.

Janzen, Annette, et al.. (2009). Ultrasound findings of bilateral hypoplasia of the vertebral arteries associated with a persistent carotid-hypoglossal artery. BMJ Case Reports. 2009. bcr0720080486–bcr0720080486. 5 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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