H.-O. Hoppen

444 total citations
34 papers, 347 citations indexed

About

H.-O. Hoppen is a scholar working on Agronomy and Crop Science, Small Animals and Reproductive Medicine. According to data from OpenAlex, H.-O. Hoppen has authored 34 papers receiving a total of 347 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Agronomy and Crop Science, 11 papers in Small Animals and 8 papers in Reproductive Medicine. Recurrent topics in H.-O. Hoppen's work include Reproductive Physiology in Livestock (18 papers), Veterinary Equine Medical Research (8 papers) and Veterinary Medicine and Surgery (6 papers). H.-O. Hoppen is often cited by papers focused on Reproductive Physiology in Livestock (18 papers), Veterinary Equine Medical Research (8 papers) and Veterinary Medicine and Surgery (6 papers). H.-O. Hoppen collaborates with scholars based in Germany, Netherlands and Austria. H.-O. Hoppen's co-authors include Jörg Aurich, E Grünert, Christine Aurich, Ina Dobrinski, Anne‐Rose Günzel‐Apel, A. Einspanier, Gerhard Flachowsky, AR Günzel‐Apel, Kees de Lange and Martin Beyerbach and has published in prestigious journals such as Reproduction, Journal of Endocrinology and European Journal of Endocrinology.

In The Last Decade

H.-O. Hoppen

34 papers receiving 321 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
H.-O. Hoppen Germany 12 169 92 83 59 49 34 347
Alessandro Troisi Italy 13 122 0.7× 187 2.0× 83 1.0× 61 1.0× 46 0.9× 42 449
D.R. Colborn United States 7 156 0.9× 60 0.7× 177 2.1× 26 0.4× 51 1.0× 10 327
Ganjam Vk United States 12 270 1.6× 78 0.8× 222 2.7× 75 1.3× 39 0.8× 22 395
G. L. Heusner United States 10 91 0.5× 54 0.6× 122 1.5× 93 1.6× 50 1.0× 19 363
Yanina Corrada Argentina 14 174 1.0× 257 2.8× 62 0.7× 76 1.3× 45 0.9× 45 461
Cláudio Alves Pimentel Brazil 10 162 1.0× 35 0.4× 41 0.5× 100 1.7× 26 0.5× 25 297
Nett Tm United States 10 333 2.0× 127 1.4× 86 1.0× 62 1.1× 73 1.5× 14 482
K Arbeiter Austria 11 209 1.2× 197 2.1× 41 0.5× 36 0.6× 23 0.5× 47 330
AR Günzel‐Apel Germany 9 106 0.6× 117 1.3× 47 0.6× 142 2.4× 21 0.4× 18 327
Christiane Otzdorff Germany 8 136 0.8× 117 1.3× 52 0.6× 106 1.8× 10 0.2× 18 295

Countries citing papers authored by H.-O. Hoppen

Since Specialization
Citations

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

Fields of papers citing papers by H.-O. Hoppen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of H.-O. Hoppen

This figure shows the co-authorship network connecting the top 25 collaborators of H.-O. Hoppen. A scholar is included among the top collaborators of H.-O. Hoppen 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 H.-O. Hoppen. H.-O. Hoppen 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.
Müller, Klaus, C. Ellenberger, H.-O. Hoppen, & Heinz‐Adolf Schoon. (2011). Immunohistochemical study of angiogenesis and angiogenic factors in equine granulosa cell tumours. Research in Veterinary Science. 92(3). 471–477. 10 indexed citations
2.
Günzel‐Apel, AR, et al.. (2009). Comparison of Selected Endocrine Parameters During Luteal Phase and Pregnancy in German Shepherd Dogs and Beagles. Reproduction in Domestic Animals. 44(s2). 59–64. 5 indexed citations
3.
Koch, Adam J., et al.. (2009). Concentrations of Prolactin, LH, Testosterone, TSH and Thyroxine in Normospermic Dogs of Different Breeds. Reproduction in Domestic Animals. 44(s2). 279–282. 13 indexed citations
4.
Martin, Nicholas G., et al.. (2009). Morphological Examination of the Corpora Lutea from Pregnant Bitches Treated with Different Abortifacient Regimes. Reproduction in Domestic Animals. 44(s2). 185–189. 5 indexed citations
5.
Günzel‐Apel, AR, et al.. (2009). Influence of Progesterone Withdrawal on Pregnancy‐Related Parameters During Post‐Implantation Early Pregnancy Loss. Reproduction in Domestic Animals. 44(s2). 174–181. 14 indexed citations
6.
Hoppen, H.-O., et al.. (2009). Effects of Short‐term Hyper‐ and Hypoprolactinaemia on Hormones of the Pituitary, Gonad and ‐Thyroid Axis and on Semen Quality in Male Beagles. Reproduction in Domestic Animals. 44(s2). 320–325. 10 indexed citations
7.
Hoppen, H.-O.. (2009). The equine placenta and equine chorionic gonadotrophin — an overview. Experimental and Clinical Endocrinology & Diabetes. 102(3). 235–243. 18 indexed citations
8.
Günzel‐Apel, Anne‐Rose, Sabine Krämer, Reinhard Mischke, et al.. (2008). Effects of gonadectomy on prolactin and LH secretion and the pituitary–thyroid axis in male dogs. Theriogenology. 71(5). 746–753. 16 indexed citations
9.
Schäfer–Somi, Sabine, et al.. (2007). Repeated induction of abortion in bitches and the effect on plasma concentrations of relaxin, progesterone and estradiol-17β. Theriogenology. 68(6). 889–895. 21 indexed citations
10.
Günzel‐Apel, Anne‐Rose, et al.. (2006). Concentrations of progesterone, prolactin and relaxin in the luteal phase and pregnancy in normal and short-cycling German Shepherd dogs. Theriogenology. 66(6-7). 1431–1435. 1 indexed citations
11.
Koch, Adam J., H.-O. Hoppen, S.J. Dieleman, H.S. Kooistra, & Anne‐Rose Günzel‐Apel. (2005). Effects of the dopamine agonist cabergoline on the pulsatile and TRH-induced secretion of prolactin, LH, and testosterone in male beagle dogs. Theriogenology. 65(8). 1666–1677. 13 indexed citations
12.
Aurich, Christine, et al.. (1999). Sexual Activity Influences the Secretion of Reproductive Hormones in the Stallion. Reproduction in Domestic Animals. 34(5). 405–441. 6 indexed citations
13.
Aurich, Christine, et al.. (1994). Effects of the opioid antagonist naloxone on release of luteinizing hormone in mares during the anovulatory season. Journal of Endocrinology. 142(1). 139–144. 23 indexed citations
14.
Heuwieser, W., E Grünert, & H.-O. Hoppen. (1993). Maternal and fetal prostaglandin concentrations during late gestation in dairy cattle. Prostaglandins. 45(1). 35–46. 6 indexed citations
15.
Heuwieser, W., E Grünert, & H.-O. Hoppen. (1993). A dystocia and caesarean section model to characterize uteroplacental prostaglandin concentrations associated with retained placenta in dairy cattle. Theriogenology. 40(1). 159–166. 2 indexed citations
16.
Dobrinski, Ina, Jörg Aurich, H.-O. Hoppen, & E Grünert. (1992). β-Endorphin and met-enkephalin in cattle during late gestation and parturition — release from uteroplacental tissues. Animal Reproduction Science. 27(1). 75–79. 1 indexed citations
17.
Homeida, A.M., et al.. (1991). Secretion of LH and progesterone after intravenous administration of GnRH in the camel (Camelus dromedarius). Animal Reproduction Science. 25(1). 67–72. 3 indexed citations
18.
Robinson, Peter N., et al.. (1990). Patency and Healing of Polymeric Microvenous Prostheses Implanted into the Rat Femoral Vein by Means of the Sleeve Anastomotic Technique. Journal of Reconstructive Microsurgery. 6(3). 287–292. 9 indexed citations
19.
Daugschies, Arwid, M. Rommel, & H.-O. Hoppen. (1989). Prostanoids during acute sarcocystiosis in growing pigs. Parasitology Research. 76(2). 115–118. 7 indexed citations
20.
Hoppen, H.-O., David Williams, & J. K. Findlay. (1976). The influence of prostaglandin F-2α on pregnenolone metabolism by the autotransplated ovary of the ewe. Reproduction. 47(2). 275–281. 6 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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