Z. J. Petryka

779 total citations
37 papers, 603 citations indexed

About

Z. J. Petryka is a scholar working on Molecular Biology, Pediatrics, Perinatology and Child Health and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Z. J. Petryka has authored 37 papers receiving a total of 603 indexed citations (citations by other indexed papers that have themselves been cited), including 28 papers in Molecular Biology, 16 papers in Pediatrics, Perinatology and Child Health and 7 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Z. J. Petryka's work include Porphyrin Metabolism and Disorders (25 papers), Heme Oxygenase-1 and Carbon Monoxide (18 papers) and Neonatal Health and Biochemistry (15 papers). Z. J. Petryka is often cited by papers focused on Porphyrin Metabolism and Disorders (25 papers), Heme Oxygenase-1 and Carbon Monoxide (18 papers) and Neonatal Health and Biochemistry (15 papers). Z. J. Petryka collaborates with scholars based in United States, Canada and United Kingdom. Z. J. Petryka's co-authors include C. J. Watson, Irene Bossenmaier, Ruth Cardinal, Gaurav Dhar, C. H. GRAY, D. C. Nicholson, M. Weimer, Albert Moscowitz, David A. Lightner and E. A. Davis and has published in prestigious journals such as Nature, Proceedings of the National Academy of Sciences and The Lancet.

In The Last Decade

Z. J. Petryka

37 papers receiving 554 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Z. J. Petryka United States	16	487	250	138	87	69	37	603
J. E. Falk United Kingdom	17	826 1.7×	180 0.7×	78 0.6×	320 3.7×	180 2.6×	24	1.0k
D.B. Morell Australia	14	347 0.7×	73 0.3×	30 0.2×	76 0.9×	195 2.8×	20	598
Edith Ju-Hwa Chu	12	338 0.7×	72 0.3×	45 0.3×	180 2.1×	69 1.0×	21	484
Y. Shami Canada	10	298 0.6×	105 0.4×	21 0.2×	21 0.2×	83 1.2×	16	535
Gordon R. Kepner United States	8	283 0.6×	23 0.1×	62 0.4×	29 0.3×	47 0.7×	10	432
M. Grinstein Argentina	13	377 0.8×	156 0.6×	26 0.2×	77 0.9×	44 0.6×	22	489
James O. Evans United States	9	315 0.6×	184 0.7×	47 0.3×	27 0.3×	36 0.5×	12	361
Pamela D. McNamara United States	15	288 0.6×	116 0.5×	21 0.2×	11 0.1×	70 1.0×	32	632
F.M.A.H. Schuurmans Stekhoven Netherlands	17	612 1.3×	74 0.3×	26 0.2×	21 0.2×	63 0.9×	38	806
Sigrid Lepke Germany	15	547 1.1×	195 0.8×	63 0.5×	5 0.1×	153 2.2×	23	841

Countries citing papers authored by Z. J. Petryka

Since Specialization

Citations

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

Fields of papers citing papers by Z. J. Petryka

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Z. J. Petryka. 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 Z. J. Petryka. The network helps show where Z. J. Petryka may publish in the future.

Co-authorship network of co-authors of Z. J. Petryka

This figure shows the co-authorship network connecting the top 25 collaborators of Z. J. Petryka. A scholar is included among the top collaborators of Z. J. Petryka 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 Z. J. Petryka. Z. J. Petryka 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

Kennedy, J. C., et al.. (1992). CLEARANCE TIMES OF PORPHYRIN DERIVATIVES FROM MICE AS MEASURED BY in vivo FLUORESCENCE SPECTROSCOPY. Photochemistry and Photobiology. 55(5). 729–734. 24 indexed citations

Petryka, Z. J., et al.. (1980). Dipyrroles in the bile, gallstones, feces and urine. International Journal of Biochemistry. 12(5-6). 1067–1074. 1 indexed citations

Miyagi, Kyoko, et al.. (1979). Uroporphyrinogen I synthase from human erythrocytes: separation, purification, and properties of isoenzymes.. Proceedings of the National Academy of Sciences. 76(12). 6172–6176. 14 indexed citations

Petryka, Z. J. & C. J. Watson. (1979). Separation and spectrodensitometric quantitation of porphyrin esters on thin-layer chromatograms. Journal of Chromatography A. 179(1). 143–149. 19 indexed citations

Petryka, Z. J., et al.. (1978). Location of iron and porphyrin in the liver in porphyria cutanea tarda. Acta Histochemica. 63(2). 168–176. 6 indexed citations

Dhar, Gaurav, Irene Bossenmaier, Ruth Cardinal, Z. J. Petryka, & C. J. Watson. (1978). Transitory Renal Failure Following Rapid Administration of a Relatively Large Amount of Hematin in a Patient with Acute Intermittent Porphyria in Clinical Remission. Acta Medica Scandinavica. 203(1-6). 437–443. 65 indexed citations

Petryka, Z. J., et al.. (1977). Biliary excretion of exogenous hematin in rats. Life Sciences. 21(7). 1015–1020. 10 indexed citations

Pierach, Claus A., et al.. (1977). Effect and fate of intravenously administered porphobilin in rats. Cellular and Molecular Life Sciences. 33(7). 873–874. 3 indexed citations

Miyagi, Ken, Z. J. Petryka, Irene Bossenmaier, Ruth Cardinal, & C. J. Watson. (1976). The activities of uroporphyrinogen synthetase and cosynthetase in congenital erythropoietic porphyria (cep). American Journal of Hematology. 1(1). 3–21. 23 indexed citations

10.

Petryka, Z. J., M. Weimer, David A. Lightner, et al.. (1975). PRESENT STATUS OF THE d‐UROBILINS*. Annals of the New York Academy of Sciences. 244(1). 521–531. 8 indexed citations

11.

Watson, C. J., Gaurav Dhar, Irene Bossenmaier, Ruth Cardinal, & Z. J. Petryka. (1973). Effect of Hematin in Acute Porphyric Relapse. Annals of Internal Medicine. 79(1). 80–83. 53 indexed citations

12.

Petryka, Z. J., et al.. (1972). Some Reflections on Prebiotic Porphyrins and Their Complexes with Other Primordial Compounds. Perspectives in biology and medicine. 15(3). 443–449. 2 indexed citations

13.

Bossenmaier, Irene, et al.. (1970). Studies of the affinity of nuclear material for uroporphyrin. Biochemical Medicine. 4(5-6). 408–417. 2 indexed citations

14.

Moscowitz, Albert, M. Weimer, David A. Lightner, et al.. (1970). The in vitro conversion of bile pigments to the urobilinoids by a rat clostridia species as compared with the human fecal flora. Biochemical Medicine. 4(2). 149–164. 14 indexed citations

15.

Lightner, David A., Albert Moscowitz, Z. J. Petryka, et al.. (1969). Mass spectrometry and ferric chloride oxidation applied to urobilinoid structures. Archives of Biochemistry and Biophysics. 131(2). 566–576. 15 indexed citations

16.

Watson, C. J., M. Weimer, Albert Moscowitz, et al.. (1969). The in vitro conversion of bile pigments to the urobilinoids by a rat Clostridia species as compared with the human fecal flora. Biochemical Medicine. 2(6). 484–508. 11 indexed citations

17.

Petryka, Z. J. & C. J. Watson. (1968). Separation of bile pigments by thin layer chromatography. Journal of Chromatography A. 37(1). 76–82. 18 indexed citations

18.

Petryka, Z. J., C. J. Watson, E. A. Davis, et al.. (1968). On the existence and structure of a stable mesobiliviolin of molecular weight 590. Tetrahedron Letters. 9(57). 5983–5985. 5 indexed citations

19.

Petryka, Z. J. & C. J. Watson. (1967). The stereospecific synthesis of cis-cis-stercobilinogen and cis-cis stercobilin. Tetrahedron Letters. 8(52). 5323–5325. 5 indexed citations

20.

GRAY, C. H., et al.. (1961). 440. The chemistry of the bile pigments. Part II. The preparation and spectral properties of biliverdin. Journal of the Chemical Society (Resumed). 2264–2264. 43 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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