Chio Oka

2.6k total citations · 1 hit paper
45 papers, 2.0k citations indexed

About

Chio Oka is a scholar working on Molecular Biology, Neurology and Ophthalmology. According to data from OpenAlex, Chio Oka has authored 45 papers receiving a total of 2.0k indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Molecular Biology, 18 papers in Neurology and 10 papers in Ophthalmology. Recurrent topics in Chio Oka's work include Cerebrovascular and genetic disorders (18 papers), Retinal Diseases and Treatments (9 papers) and Retinal Imaging and Analysis (5 papers). Chio Oka is often cited by papers focused on Cerebrovascular and genetic disorders (18 papers), Retinal Diseases and Treatments (9 papers) and Retinal Imaging and Analysis (5 papers). Chio Oka collaborates with scholars based in Japan, Indonesia and Germany. Chio Oka's co-authors include Masashi Kawaichi, Tasuku Honjo, Masato Yano, Yoshifumi Ueta, Jiraporn Tocharus, Toru Nakano, Kohei Shiota, José Luís de la Pompa, Takashi Sakai and Andrew Wakeham and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Biological Chemistry and Journal of Neuroscience.

In The Last Decade

Chio Oka

44 papers receiving 1.9k 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.

Disruption of the mouse RBP-Jк gene results in early embryonic death

1995 419 citations Chio Oka, Masashi Kawaichi et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Chio Oka Japan	20	1.1k	459	337	227	181	45	2.0k
Lauri Miller United States	12	998 0.9×	111 0.2×	600 1.8×	211 0.9×	103 0.6×	16	2.1k
Jianhua Yan China	18	615 0.6×	875 1.9×	257 0.8×	56 0.2×	77 0.4×	107	1.9k
Ivan B. Lobov United States	13	2.3k 2.1×	103 0.2×	186 0.6×	162 0.7×	314 1.7×	25	3.0k
Marion Jeanne United States	16	1.4k 1.3×	206 0.4×	126 0.4×	44 0.2×	242 1.3×	23	2.1k
M. Sarfarazi United Kingdom	28	1.7k 1.6×	192 0.4×	415 1.2×	217 1.0×	819 4.5×	67	3.0k
Susanne Adams Germany	19	2.3k 2.1×	187 0.4×	128 0.4×	119 0.5×	168 0.9×	22	3.5k
Collins Vp Sweden	24	1.3k 1.2×	398 0.9×	85 0.3×	178 0.8×	168 0.9×	65	2.4k
Osamu Tachibana Japan	23	1.2k 1.0×	437 1.0×	40 0.1×	101 0.4×	97 0.5×	105	2.7k
Weiyong Shen Australia	24	1.2k 1.1×	64 0.1×	886 2.6×	496 2.2×	155 0.9×	73	2.0k
Alice Wong United States	27	1.6k 1.5×	120 0.3×	46 0.1×	65 0.3×	191 1.1×	52	2.6k

Countries citing papers authored by Chio Oka

Since Specialization

Citations

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

Fields of papers citing papers by Chio Oka

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Chio Oka

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

Biswas, Pooja, TJ Hollingsworth, Naheed W. Khan, et al.. (2025). Ablation of Htra1 leads to sub-RPE deposits and photoreceptor abnormalities. JCI Insight. 10(3). 1 indexed citations

Tocharus, Jiraporn, et al.. (2023). Pelargonic acid vanillylamide alleviates hepatic autophagy and ER stress in hepatic steatosis model. Food and Chemical Toxicology. 180. 113987–113987. 1 indexed citations

Sasongko, Muhammad Bayu, et al.. (2022). rs10737680 polymorphism in complement factor H and neovascular age-related macular degeneration in Yogyakarta, Indonesia. PubMed. 11(2). 71–76. 2 indexed citations

Oka, Chio, et al.. (2022). Protective Effect of Neferine in Permanent Cerebral Ischemic Rats via Anti-Oxidative and Anti-Apoptotic Mechanisms. Neurotoxicity Research. 40(5). 1348–1359. 7 indexed citations

Sasongko, Muhammad Bayu, et al.. (2021). Associations of ARMS2 and CFH Gene Polymorphisms with Neovascular Age-Related Macular Degeneration. Clinical ophthalmology. Volume 15. 1101–1108. 9 indexed citations

Oka, Chio, et al.. (2021). Interplay between HTRA1 and classical signalling pathways in organogenesis and diseases. Saudi Journal of Biological Sciences. 29(4). 1919–1927. 15 indexed citations

Tang, Tian, et al.. (2019). High-Temperature Requirement A1 Protease as a Rate-Limiting Factor in the Development of Osteoarthritis. American Journal Of Pathology. 189(7). 1423–1434. 19 indexed citations

McGuire, Tammy L., et al.. (2018). BMP-Responsive Protease HtrA1 Is Differentially Expressed in Astrocytes and Regulates Astrocytic Development and Injury Response. Journal of Neuroscience. 38(15). 3840–3857. 16 indexed citations

Ikawati, Muthi, Masashi Kawaichi, & Chio Oka. (2018). Loss of HtrA1 serine protease induces synthetic modulation of aortic vascular smooth muscle cells. PLoS ONE. 13(5). e0196628–e0196628. 15 indexed citations

10.

Klose, Ralph, Mohamed Adam, Iris Moll, et al.. (2018). Inactivation of the serine protease HTRA1 inhibits tumor growth by deregulating angiogenesis. Oncogene. 37(31). 4260–4272. 27 indexed citations

11.

Zellner, Andreas, Eva Scharrer, Thomas Arzberger, et al.. (2018). CADASIL brain vessels show a HTRA1 loss-of-function profile. Acta Neuropathologica. 136(1). 111–125. 54 indexed citations

12.

Mirsaidi, Ali, André N. Tiaden, Gisela Kuhn, et al.. (2017). Role of HTRA1 in bone formation and regeneration: In vitro and in vivo evaluation. PLoS ONE. 12(7). e0181600–e0181600. 13 indexed citations

13.

Schmidt, Nina, Vanda Lux, Christian Johannes, et al.. (2016). Epigenetic silencing of serine protease HTRA1 drives polyploidy. BMC Cancer. 16(1). 399–399. 21 indexed citations

14.

Ikawati, Muthi, et al.. (2014). Abnormal development of placenta in HtrA1-deficient mice. Developmental Biology. 397(1). 89–102. 33 indexed citations

15.

Iejima, Daisuke, Toru Noda, Shinsuke Yuasa, et al.. (2014). HTRA1 (High Temperature Requirement A Serine Peptidase 1) Gene Is Transcriptionally Regulated by Insertion/Deletion Nucleotides Located at the 3′ End of the ARMS2 (Age-related Maculopathy Susceptibility 2) Gene in Patients with Age-related Macular Degeneration. Journal of Biological Chemistry. 290(5). 2784–2797. 24 indexed citations

16.

Akahori, Masakazu, Chio Oka, & Takeshi Iwata. (2008). Characterization of the Retina in Htra1 Deficient Mouse. Investigative Ophthalmology & Visual Science. 49(13). 3418–3418. 2 indexed citations

17.

Shiroshima, Tomoko, Chio Oka, & Masashi Kawaichi. (2008). Identification of LRP1B‐interacting proteins and inhibition of protein kinase Cα‐phosphorylation of LRP1B by association with PICK1. FEBS Letters. 583(1). 43–48. 7 indexed citations

18.

Yano, Masato, Jiraporn Tocharus, Hisae Kojima, et al.. (2005). Expression of mouse HtrA1 serine protease in normal bone and cartilage and its upregulation in joint cartilage damaged by experimental arthritis. Bone. 37(3). 323–336. 116 indexed citations

19.

Tocharus, Jiraporn, et al.. (2004). Developmentally regulated expression of mouse HtrA3 and its role as an inhibitor of TGF‐β signaling. Development Growth & Differentiation. 46(3). 257–274. 116 indexed citations

20.

Ideta, Hidenao, Junichi Yonemoto, Shigeki Tanaka, et al.. (1995). Epidemiologic characteristics of rhegmatogenous retinal detachment in Kumamoto, Japan. Graefe s Archive for Clinical and Experimental Ophthalmology. 233(12). 772–776. 70 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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