John H. Karam

5.1k total citations · 4 hit papers
55 papers, 3.9k citations indexed

About

John H. Karam is a scholar working on Endocrinology, Diabetes and Metabolism, Surgery and Molecular Biology. According to data from OpenAlex, John H. Karam has authored 55 papers receiving a total of 3.9k indexed citations (citations by other indexed papers that have themselves been cited), including 37 papers in Endocrinology, Diabetes and Metabolism, 27 papers in Surgery and 20 papers in Molecular Biology. Recurrent topics in John H. Karam's work include Pancreatic function and diabetes (26 papers), Diabetes Management and Research (23 papers) and Metabolism, Diabetes, and Cancer (14 papers). John H. Karam is often cited by papers focused on Pancreatic function and diabetes (26 papers), Diabetes Management and Research (23 papers) and Metabolism, Diabetes, and Cancer (14 papers). John H. Karam collaborates with scholars based in United States. John H. Karam's co-authors include Peter H. Forsham, John E. Gerich, Gerold M. Grodsky, Graeme I. Bell, Shiro Horita, Mara Lorenzi, Claudio Noacco, Maurice Langlois, Victor Schneider and Nancy B. McWilliams and has published in prestigious journals such as Science, New England Journal of Medicine and Journal of Clinical Investigation.

In The Last Decade

John H. Karam

53 papers receiving 3.4k 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.

A Polymorphic Locus Near the Human Insulin Gene Is Associated with Insulin-dependent Diabetes Melliitus

1984 567 citations John H. Karam et al. Diabetes profile →
Lack of Glucagon Response to Hypoglycemia in Diabetes: Evidence for an Intrinsic Pancreatic Alpha Cell Defect

1973 550 citations John E. Gerich, Maurice Langlois et al. Science profile →
Excessive Insulin Response to Glucose in Obese Subjects as Measured by Immunochemical Assay

1963 410 citations John H. Karam, Gerold M. Grodsky et al. Diabetes profile →
Effects of Somatostatin on Plasma Glucose and Glucagon Levels in Human Diabetes Mellitus

1974 190 citations John E. Gerich, Mara Lorenzi et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
John H. Karam United States	28	2.2k	1.8k	1.2k	1.1k	851	55	3.9k
Ellis Samols United States	35	2.2k 1.0×	2.3k 1.3×	938 0.8×	1.2k 1.1×	530 0.6×	101	4.2k
Gerald R. Faloona United States	29	2.1k 0.9×	1.6k 0.9×	465 0.4×	917 0.9×	1.0k 1.2×	42	4.1k
Sheldon J. Bleicher United States	15	1.5k 0.7×	1.1k 0.6×	509 0.4×	904 0.9×	986 1.2×	26	3.6k
Pierre J. Lefèbvre Belgium	32	1.8k 0.8×	1.0k 0.6×	479 0.4×	779 0.7×	972 1.1×	144	3.7k
Shigeaki Baba Japan	35	1.1k 0.5×	1.5k 0.9×	439 0.4×	1.2k 1.1×	487 0.6×	239	3.6k
David M. Mott United States	23	2.5k 1.1×	1.4k 0.8×	879 0.8×	2.0k 1.9×	1.5k 1.8×	42	5.2k
Carola Saloranta Finland	27	1.4k 0.6×	849 0.5×	828 0.7×	982 0.9×	788 0.9×	39	3.0k
L. Groop Sweden	30	1.3k 0.6×	873 0.5×	652 0.6×	1.1k 1.1×	1.1k 1.3×	57	3.5k
Steven C. Elbein United States	28	1.0k 0.5×	867 0.5×	804 0.7×	1.2k 1.2×	859 1.0×	63	3.1k
Ole Schmitz Denmark	41	2.3k 1.0×	1.6k 0.9×	729 0.6×	1.7k 1.6×	1.4k 1.7×	136	5.2k

Countries citing papers authored by John H. Karam

Since Specialization

Citations

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

Fields of papers citing papers by John H. Karam

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John H. Karam. 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 John H. Karam. The network helps show where John H. Karam may publish in the future.

Co-authorship network of co-authors of John H. Karam

This figure shows the co-authorship network connecting the top 25 collaborators of John H. Karam. A scholar is included among the top collaborators of John H. Karam 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 John H. Karam. John H. Karam is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Sambol, Nancy C., J Chiang, Emil T. Lin, et al.. (1996). Pharmacokinetics and Pharmacodynamics of Metformin in Healthy Subjects and Patients with Noninsulin‐Dependent Diabetes Mellitus. The Journal of Clinical Pharmacology. 36(11). 1012–1021. 139 indexed citations

Karam, John H.. (1995). Chronic Complications of Diabetes. American Journal of Clinical Nutrition. 62(1). 159–160. 23 indexed citations

Karam, John H.. (1992). Type II Diabetes and Syndrome X: Pathogenesis and Glycemic Management. Endocrinology and Metabolism Clinics of North America. 21(2). 329–350. 17 indexed citations

Bouchard, Alain, Elias H. Botvinick, Nancy J. Phillips, et al.. (1989). Noninvasive assessment of cardiomyopathy in normotensive diabetic patients between 20 and 50 years old☆. The American Journal of Medicine. 87. 160–166. 1 indexed citations

Bouchard, Alain, Elias H. Botvinick, Nancy Phillips, et al.. (1989). Noninvasive assessment of cardiomyopathy in normotensive diabetic patients between 20 and 50 years old. The American Journal of Medicine. 87(2). 160–166. 54 indexed citations

Lorenzi, Mara, Nancy J.V. Bohannon, Eva Tsalikian, & John H. Karam. (1984). Duration of type I diabetes affects glucagon and glucose responses to insulin-induced hypoglycemia.. PubMed. 141(4). 467–71. 17 indexed citations

Bohannon, Nancy V., Mara Lorenzi, Gerold M. Grodsky, & John H. Karam. (1982). Stimulatory Effects of Tolbutamide Infusion on Plasma Glucagon in Insulin-Dependent Diabetic Subjects*. The Journal of Clinical Endocrinology & Metabolism. 54(2). 459–462. 24 indexed citations

Bohannon, Nancy V., John H. Karam, & Peter H. Forsham. (1980). Endocrine responses to sugar ingestion in man. Advantages of fructose over sucrose and glucose.. PubMed. 76(6). 555–60. 41 indexed citations

Bohannon, Nancy V., John H. Karam, & Peter H. Forsham. (1980). Advantages of fructose over sucrose and glucose Endocrine responses to sugar ingestion in man. Journal of the American Dietetic Association. 76(6). 555–560. 39 indexed citations

10.

Karam, John H., et al.. (1979). Feedback-controlled dextrose infusion during surgical management of insulinomas. The American Journal of Medicine. 66(4). 675–680. 11 indexed citations

11.

Gerich, John E., Mara Lorenzi, Eva Tsalikian, & John H. Karam. (1976). Studies on the Mechanism of Epinephrine-induced Hyperglycemia in Man: Evidence for Participation of Pancreatic Glucagon Secretion. Diabetes. 25(1). 65–71. 83 indexed citations

12.

Matin, Shaikh B., John H. Karam, & Peter H. Forsham. (1975). Simple electron capture gas chromatographic method for the determination of oral hypoglycemic biguanides in biological fluids. Analytical Chemistry. 47(3). 545–548. 57 indexed citations

13.

Matin, Shaikh B., John H. Karam, Peter H. Forsham, & James B. Knight. (1974). Determination of phenformin in biological fluids using chemical ionization mass spectrometry. Journal of Mass Spectrometry. 1(5). 320–322. 20 indexed citations

14.

Matin, Shaikh B., Suk Han Wan, & John H. Karam. (1974). Pharmacokinetics of tolbutamide: Prediction by concentration in saliva. Clinical Pharmacology & Therapeutics. 16(6). 1052–1058. 111 indexed citations

15.

Karam, John H., et al.. (1974). “Staircase” Glucose Stimulation of Insulin Secretion in Obesity: Measure of Beta-cell Sensitivity and Capacity. Diabetes. 23(9). 763–770. 25 indexed citations

16.

Hofeldt, Fred D., Stephen E. Dippe, Seymour R. Levin, et al.. (1974). Effects of Diphenylhydantoin upon Glucose-induced Insulin Secretion in Three Patients with Insulinoma. Diabetes. 23(3). 192–198. 25 indexed citations

17.

Gerich, John E., Maurice Langlois, Claudio Noacco, John H. Karam, & Peter H. Forsham. (1973). Lack of Glucagon Response to Hypoglycemia in Diabetes: Evidence for an Intrinsic Pancreatic Alpha Cell Defect. Science. 182(4108). 171–173. 550 indexed citations breakdown →

18.

Grasso, Sebastiano, et al.. (1968). Use of 2-Deoxy-d-glucose in Studying the Mechanism of Lipid Mobilization. The Journal of Clinical Endocrinology & Metabolism. 28(4). 535–542. 17 indexed citations

19.

Karam, John H., Gerold M. Grodsky, & Peter H. Forsham. (1968). Insulin Secretion in Obesity: Pseudodiabetes?. American Journal of Clinical Nutrition. 21(12). 1445–1454. 20 indexed citations

20.

Benedetti, Andrea, et al.. (1968). Early Phase of Insulin Release. Diabetes. 17(11). 684–692. 85 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.

Explore authors with similar magnitude of impact