Lothar Siekmann

2.3k citations

83 papers · 1.8k indexed · h-index 24

Impact in

Nephrology top 2%
- Chronic Kidney Disease and Diabetes
Endocrinology, Diabetes and Metabolism top 2%
- Hormonal and reproductive studies
- Hormonal Regulation and Hypertension

Papers in

Endocrinology, Diabetes and Metabolism 28
- Hormonal and reproductive studies 18
Clinical Biochemistry 8
- Metabolism and Genetic Disorders 8

Co-authors: H. Breuer Linda M. Thienpont Gary L. Myers Edward R. Ashwood Anthony A. Killeen W. Greg Miller Edward Wang H.‐O. Hoppen
Journals: Clinical Chemistry and Laboratory Medicine (CCLM) (14 papers)European Journal of Endocrinology (4 papers)Clinical Chemistry (4 papers)Analytical and Bioanalytical Chemistry (3 papers)Journal of Mass Spectrometry (3 papers)
Partner nations: Germany United States Belgium

In The Last Decade

Lothar Siekmann

79 papers receiving 1.6k citations

Peers

Countries citing papers authored by Lothar Siekmann

Since Specialization

Citations

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

Fields of papers citing papers by Lothar Siekmann

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network

The 25 scholars most cited alongside Lothar Siekmann, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Lothar Siekmann Line = papers co-authored together Lothar Siekmann links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	The Asian project for collaborative derivation of reference intervals: (1) strategy and major results of standardized analytes Clinical Chemistry and Laboratory Medicine (CCLM) ·Kiyoshi Ichihara, Ferruccio Ceriotti, Dimas Iman Nugroho, Ulul Labab, Priscilla M.K. Poon, William F. Hodny, Yasushi Higashiuesato, Xuejing Wang, Hiromi Kataoka, Kim Lam Chiok C, Shu‐Chu Shiesh, Nesli Akinci, Jeong‐Ho Kim, Masakazu Watanabe, Christopher Wai Kei Lam, Lothar Siekmann, Joseph Lopez, Mauro Panteghini	2013	56
2	Metrological traceability – a concept for standardization in laboratory medicine Clinical Chemistry and Laboratory Medicine (CCLM) ·Lothar Siekmann	2012	15
3	Implementation of the concept of traceability in laboratory medicine in external quality assessment Clinical Biochemistry ·Lothar Siekmann	2009	4
4	Genome‐wide linkage scan for bladder exstrophy‐epispadias complex Birth Defects Research Part A Clinical and Molecular Teratology ·Michael Ludwig, Franz Rüschendorf, Kathrin Saar, Norbert Hübner, Lothar Siekmann, Simeon A. Boyadjiev, Heiko Reutter	2008	15
5	Characterisation of estrogenic 17β-hydroxysteroid dehydrogenase (17β-HSD) activity in the human brain The Journal of Steroid Biochemistry and Molecular Biology ·Stephan Steckelbroeck, Matthias Watzka, О. М. КАЛЮЖНИЙ, Sonia Aracely Burgos Gutiérrez, F. Bidlingmaier, Everth Mauricio León Nieto, Volkmar Hans, Hans Clusmann, Michael Ludwig, Lothar Siekmann, Dietrich Klingmüller	2003	31
6	IFCC Primary Reference Procedures for the Measurement of Catalytic Activity Concentrations of Enzymes at 37°C. Part 7. Certification of Four Reference Materials for the Determination of Enzymatic Activity of γ-Glutamyltransferase, Lactate Dehydrogenase, Alanine Aminotransferase and Creatine Kinase according to IFCC Reference Procedures at 37°C Clinical Chemistry and Laboratory Medicine (CCLM) ·Lothar Siekmann, R Bonora, C A Burtis, Ferruccio Ceriotti, P. Clerc-Renaud, G Férard, C. A. Ferrero, J. C. Forest, Paul Franck, F.-Javier Gella, Wieland Hoelzel, Poul J. Jørgensen, Takashi Kanno, Шешукова Оксана Валерьевна, Rainer Klauke, N. Kristiansen, J.-M. Lessinger, Thomas P. J. Linsinger, Hideo Misaki	2002	47
7	Characterization of the dehydroepiandrosterone (DHEA) metabolism via oxysterol 7α‐hydroxylase and 17‐ketosteroid reductase activity in the human brain Journal of Neurochemistry ·Stephan Steckelbroeck, Matthias Watzka, Dieter Lütjohann, M.L. Gallo, Hossaein Samary, Volkmar Hans, Hans Clusmann, О. М. КАЛЮЖНИЙ, Michael Ludwig, Lothar Siekmann, Dietrich Klingmüller	2002	51
8	Standardized extracts from Chinese herbs induce IL-10 production in human monocyte-derived dendritic cells and alter their differentiation in vitro Journal of Allergy and Clinical Immunology ·Natalija Novak, Jörg Haberstok, Stefan Kraft, Lothar Siekmann, Jean‐Pierre Allam, Thomas Bieber	2001	21
9	Establishing a Reference System in Clinical Enzymology Clinical Chemistry and Laboratory Medicine (CCLM) ·Mauro Panteghini, Ferruccio Ceriotti, G. Schumann, Lothar Siekmann	2001	47
10	Estimating the uncertainty of stability for matrix CRMs Fresenius Journal of Analytical Chemistry ·Thomas P. J. Linsinger, J. Pauwels, A. Lamberty, W. Schmidt, Adriaan M. H. van der Veen, Lothar Siekmann	2001	99
11	Estimation of the uncertainty of CRMs in accordance with GUM: Application to the certification of four enzyme CRMs Fresenius Journal of Analytical Chemistry ·Thomas P. J. Linsinger, J. Pauwels, H. Schimmel, A. Lamberty, Adriaan M. H. van der Veen, G. Schumann, Lothar Siekmann	2000	17
12	Gestodene and desogestrel do not have a different influence on concentration profiles of ethinylestradiol in women taking oral contraceptives--results of isotope dilution mass spectrometry measurements European Journal of Endocrinology ·Lothar Siekmann, E. Ong, F. Bidlingmaier, K. Brill, Manfred Albring	1998	10
13	Adrenocortical insufficiency in Rhodesian sleeping sickness is not attributable to suramin Transactions of the Royal Society of Tropical Medicine and Hygiene ·Christina Heppner, Frank Petzke, Wiebke Arlt, Dawson Mbulamberi, Lothar Siekmann, Ni Komang Ayu Sri Andini, Tran Tri Vu, W. Winkelmann, Bruno Allolio, Martín Reincke	1995	2
14	Suramin in adrenocortical cancer Clinical Endocrinology ·Wiebke Arlt, Martín Reincke, Lothar Siekmann, W. Winkelmann, Bruno Allolio	1994	1
15	Impairment of Adrenocortical Function Associated with Increased Plasma Tumor Necrosis Factor-Alpha and Interleukin-6 Concentrations in African Trypanosomiasis NeuroImmunoModulation ·Martín Reincke, Christina Heppner, Frank Petzke, Bruno Allolio, Wiebke Arlt, Dawson Mbulamberi, Lothar Siekmann, Ni Komang Ayu Sri Andini, W. Winkelmann, George P. Chrousos	1994	63
16	Suramin in adrenocortical cancer: limited efficacy and serious toxicity Clinical Endocrinology ·Wiebke Arlt, Martín Reincke, Lothar Siekmann, W. Winkelmann, Bruno Allolio	1994	25
17	Reference Methods for Total Cholesterol and Total Glycerol Clinical Chemistry and Laboratory Medicine (CCLM) ·Lothar Siekmann	1991	10
18	Measurement of thyroxine in human serum by isotope dilution mass spectrometry. Definitive methods in clinical chemistry, V Journal of Mass Spectrometry ·Lothar Siekmann	1987	18
19	Massenfragmentographische Bestimmung von Cholesterin im Serum — eine klinisch-chemische Referenzmethode Fresenius Journal of Analytical Chemistry ·Lothar Siekmann, Anne Manlow, H. Breuer	1976	26
20	Zur gas-chromatographisch-massenspektrometrischen Bestimmung von Steroidhormonen in Körperflüssigkeiten unter Verwendung eines Multiple Ion Detectors (Fragmentographie) Fresenius Zeitschrift für Analytische Chemie ·Lothar Siekmann, H.‐O. Hoppen, H. Breuer	1970	43

About Lothar Siekmann

Lothar Siekmann is a scholar working on Endocrinology, Diabetes and Metabolism, Clinical Biochemistry, Spectroscopy, Statistics, Probability and Uncertainty and Biochemistry, having authored 83 papers that have together received 1.8k indexed citations. Recurring topics across this work include Hormonal and reproductive studies (18 papers), Estrogen and related hormone effects (14 papers), Clinical Laboratory Practices and Quality Control (13 papers), Pesticide Residue Analysis and Safety (12 papers), Analytical Chemistry and Chromatography (8 papers), Metabolism and Genetic Disorders (8 papers), Mass Spectrometry Techniques and Applications (8 papers) and Pharmacological Effects and Assays (8 papers). The work is most often cited by research in Nephrology (242 citations), Endocrinology, Diabetes and Metabolism (480 citations), Statistics, Probability and Uncertainty (173 citations), Behavioral Neuroscience (69 citations) and Spectroscopy (223 citations). Lothar Siekmann has collaborated with scholars based in Germany, United States and Belgium. Frequent co-authors include H. Breuer, Linda M. Thienpont, Gary L. Myers, Edward R. Ashwood, Anthony A. Killeen, W. Greg Miller, Edward Wang, H.‐O. Hoppen, Thomas P. J. Linsinger and Anja Keßler. Their work appears in journals such as Clinical Chemistry and Laboratory Medicine (CCLM), European Journal of Endocrinology, Clinical Chemistry, Analytical and Bioanalytical Chemistry and Journal of Mass Spectrometry.

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