S Lortz

3.5k total citations · 1 hit paper
32 papers, 2.8k citations indexed

About

S Lortz is a scholar working on Surgery, Cell Biology and Physiology. According to data from OpenAlex, S Lortz has authored 32 papers receiving a total of 2.8k indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Surgery, 16 papers in Cell Biology and 10 papers in Physiology. Recurrent topics in S Lortz's work include Pancreatic function and diabetes (19 papers), Endoplasmic Reticulum Stress and Disease (15 papers) and Adipose Tissue and Metabolism (7 papers). S Lortz is often cited by papers focused on Pancreatic function and diabetes (19 papers), Endoplasmic Reticulum Stress and Disease (15 papers) and Adipose Tissue and Metabolism (7 papers). S Lortz collaborates with scholars based in Germany, United Kingdom and Brazil. S Lortz's co-authors include Sigurd Lenzen, Markus Tiedge, Ilir Mehmeti, Ewa Gurgul-Convey, Rex Munday, Anne Jörns, Décio L. Eizirik, Allan E. Karlsen, Jørn Nerup and Matthias Elsner and has published in prestigious journals such as Journal of Biological Chemistry, Diabetes and The FASEB Journal.

In The Last Decade

S Lortz

32 papers receiving 2.8k 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.

Relation Between Antioxidant Enzyme Gene Expression and Antioxidative Defense Status of Insulin-Producing Cells

1997 986 citations Markus Tiedge, S Lortz et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
S Lortz Germany	24	1.4k	958	817	675	536	32	2.8k
Phuong Oanh T. Tran United States	14	1.5k 1.1×	1.0k 1.1×	1.1k 1.4×	662 1.0×	558 1.0×	17	2.8k
L. Karl Olson United States	33	1.5k 1.0×	1.6k 1.7×	1.0k 1.3×	706 1.0×	530 1.0×	67	3.6k
Yoshihisa Nakatani Japan	20	984 0.7×	1.1k 1.1×	725 0.9×	404 0.6×	575 1.1×	32	2.7k
Sasanka Ramanadham United States	41	1.4k 1.0×	2.8k 2.9×	689 0.8×	511 0.8×	765 1.4×	124	4.6k
Dan Kawamori Japan	32	1.9k 1.4×	1.9k 1.9×	1.3k 1.6×	825 1.2×	1.0k 1.9×	75	4.5k
Andreas Wiederkehr Switzerland	31	976 0.7×	1.9k 2.0×	411 0.5×	361 0.5×	607 1.1×	58	3.1k
Takeshi Miyatsuka Japan	36	2.4k 1.8×	1.7k 1.8×	1.4k 1.8×	1.3k 1.9×	660 1.2×	100	4.6k
Érik Joly Canada	27	1.6k 1.1×	1.5k 1.6×	1.0k 1.2×	515 0.8×	743 1.4×	37	3.1k
S.R. Murthy Madiraju Canada	27	1.3k 0.9×	1.6k 1.7×	683 0.8×	401 0.6×	758 1.4×	51	3.1k
Minako Imamura Japan	20	559 0.4×	1.2k 1.2×	554 0.7×	298 0.4×	823 1.5×	41	2.8k

Countries citing papers authored by S Lortz

Since Specialization

Citations

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

Fields of papers citing papers by S Lortz

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of S Lortz

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

Lortz, S, et al.. (2019). Hydrogen peroxide permeability of cellular membranes in insulin-producing cells. Biochimica et Biophysica Acta (BBA) - Biomembranes. 1862(2). 183096–183096. 25 indexed citations

Terra, Letícia Ferreira, Rosangela A.M. Wailemann, Ancély Ferreira dos Santos, et al.. (2019). Heat shock protein B1 is a key mediator of prolactin-induced beta-cell cytoprotection against oxidative stress. Free Radical Biology and Medicine. 134. 394–405. 23 indexed citations

Melo, Eduardo P., S Lortz, Sigurd Lenzen, et al.. (2017). TriPer, an optical probe tuned to the endoplasmic reticulum tracks changes in luminal H2O2. BMC Biology. 15(1). 24–24. 37 indexed citations

Lortz, S, Sigurd Lenzen, & Ilir Mehmeti. (2015). Impact of scavenging hydrogen peroxide in the endoplasmic reticulum for β cell function. Journal of Molecular Endocrinology. 55(1). 21–29. 7 indexed citations

Lortz, S, S Lenzen, & Ilir Mehmeti. (2014). N-glycosylation-negative catalase: a useful tool for exploring the role of hydrogen peroxide in the endoplasmic reticulum. Free Radical Biology and Medicine. 80. 77–83. 10 indexed citations

Lortz, S, et al.. (2014). Influence of cytokines on Dmt1 iron transporter and ferritin expression in insulin-secreting cells. Journal of Molecular Endocrinology. 52(3). 301–310. 12 indexed citations

Lortz, S, Ewa Gurgul-Convey, Ortwin Naujok, & Sigurd Lenzen. (2013). Overexpression of the antioxidant enzyme catalase does not interfere with the glucose responsiveness of insulin-secreting INS-1E cells and rat islets. Diabetologia. 56(4). 774–782. 32 indexed citations

Mehmeti, Ilir, S Lortz, & Sigurd Lenzen. (2012). The H2O2-sensitive HyPer protein targeted to the endoplasmic reticulum as a mirror of the oxidizing thiol–disulfide milieu. Free Radical Biology and Medicine. 53(7). 1451–1458. 46 indexed citations

Gurgul-Convey, Ewa, Ilir Mehmeti, S Lortz, & Sigurd Lenzen. (2011). Cytokine toxicity in insulin-producing cells is mediated by nitro-oxidative stress-induced hydroxyl radical formation in mitochondria. Journal of Molecular Medicine. 89(8). 785–798. 59 indexed citations

10.

Mehmeti, Ilir, Ewa Gurgul-Convey, Sigurd Lenzen, & S Lortz. (2011). Induction of the intrinsic apoptosis pathway in insulin-secreting cells is dependent on oxidative damage of mitochondria but independent of caspase-12 activation. Biochimica et Biophysica Acta (BBA) - Molecular Cell Research. 1813(10). 1827–1835. 30 indexed citations

11.

Mehmeti, Ilir, Sigurd Lenzen, & S Lortz. (2010). Modulation of Bcl-2-related protein expression in pancreatic beta cells by pro-inflammatory cytokines and its dependence on the antioxidative defense status. Molecular and Cellular Endocrinology. 332(1-2). 88–96. 51 indexed citations

12.

Allagnat, Florent, Fernanda Ortis, Pierre Pirot, et al.. (2010). Sustained production of spliced X-box binding protein 1 (XBP1) induces pancreatic beta cell dysfunction and apoptosis. Diabetologia. 53(6). 1120–1130. 108 indexed citations

13.

Lortz, S, et al.. (2007). Triiodothyronine (T3)-mediated toxicity and induction of apoptosis in insulin-producing INS-1 cells. Life Sciences. 80(22). 2045–2050. 32 indexed citations

14.

Lortz, S, Ewa Gurgul-Convey, Sigurd Lenzen, & Markus Tiedge. (2005). Importance of mitochondrial superoxide dismutase expression in insulin-producing cells for the toxicity of reactive oxygen species and proinflammatory cytokines. Diabetologia. 48(8). 1541–1548. 50 indexed citations

15.

Lortz, S. (2003). Sequential inactivation of reactive oxygen species by combined overexpression of SOD isoforms and catalase in insulin-producing cells. Free Radical Biology and Medicine. 34(6). 683–688. 62 indexed citations

16.

Lenzen, Sigurd, Markus Tiedge, Matthias Elsner, et al.. (2001). The LEW.1AR1/Ztm-iddm rat: a new model of spontaneous insulin-dependent diabetes mellitus. Diabetologia. 44(9). 1189–1196. 99 indexed citations

17.

Wedekind, Dirk, Sigurd Lenzen, Markus Tiedge, et al.. (2000). A new rat model for insulin-dependent diabetes mellitus (Iddm). 41(1-2). 14–18. 1 indexed citations

18.

Tiedge, Markus, S Lortz, Rex Munday, & Sigurd Lenzen. (1999). Protection against the co-operative toxicity of nitric oxide and oxygen free radicals by overexpression of antioxidant enzymes in bioengineered insulin-producing RINm5F cells. Diabetologia. 42(7). 849–855. 92 indexed citations

19.

Lortz, S, et al.. (1997). Relation between antioxidant enzyme gene expression and antioxidative defense status of insulin-producing cells Implications from studies on bioengineered RINm5F cells. Experimental and Clinical Endocrinology & Diabetes. 105(4). 48. 1 indexed citations

20.

Lenzen, Sigurd, S Lortz, & Markus Tiedge. (1996). Effects of metformin on SGLT1, GLUT2, and GLUT5 hexose transporter gene expression in small intestine from rats. Biochemical Pharmacology. 51(7). 893–896. 41 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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