User profiles for Sachiko Koyama

Sachiko Koyama

Associate scientist, Indiana University
Verified email at indiana.edu
Cited by 1992

Recent smell loss is the best predictor of COVID-19 among individuals with recent respiratory symptoms

…, JM Justice, PK Kaushik, S Koyama… - Chemical …, 2021 - academic.oup.com
In a preregistered, cross-sectional study, we investigated whether olfactory loss is a reliable
predictor of COVID-19 using a crowdsourced questionnaire in 23 languages to assess …

Relief effect of vitamin A on the decreased motility of sperm and the increased incidence of malformed sperm in mice exposed neonatally to bisphenol A

H Aikawa, S Koyama, M Matsuda, K Nakahashi… - Cell and tissue …, 2004 - Springer
Administration of 50 μg of bisphenol A (BPA) for the first 5 days after birth resulted in a
decrease in the percentage of moving sperm, and an increase in the incidence of malformed …

[HTML][HTML] Possible use of phytochemicals for recovery from COVID-19-induced anosmia and ageusia

S Koyama, K Kondo, R Ueha, H Kashiwadani… - International Journal of …, 2021 - mdpi.com
The year 2020 became the year of the outbreak of coronavirus, SARS-CoV-2, which escalated
into a worldwide pandemic and continued into 2021. One of the unique symptoms of the …

[HTML][HTML] The effects of essential oils and terpenes in relation to their routes of intake and application

S Koyama, T Heinbockel - International journal of molecular sciences, 2020 - mdpi.com
Essential oils have been used in multiple ways, ie, inhaling, topically applying on the skin,
and drinking. Thus, there are three major routes of intake or application involved: the olfactory …

[HTML][HTML] A follow-up on quantitative and qualitative olfactory dysfunction and other symptoms in patients recovering from COVID-19 smell loss

…, R Pellegrino, DLD Hwang, J Albayay, S Koyama… - Rhinology, 2022 - ncbi.nlm.nih.gov
Background: Sudden smell loss is a specific early symptom of COVID-19, which, prior to the
emergence of Omicron, had estimated prevalence of~ 40% to 75%. Chemosensory …

[HTML][HTML] Beta-caryophyllene enhances wound healing through multiple routes

S Koyama, A Purk, M Kaur, HA Soini, MV Novotny… - PloS one, 2019 - journals.plos.org
Beta-caryophyllene is an odoriferous bicyclic sesquiterpene found in various herbs and spices.
Recently, it was found that beta-caryophyllene is a ligand of the cannabinoid receptor 2 (…

Neural correlates of auditory feedback control in human

A Toyomura, S Koyama, T Miyamaoto, A Terao… - Neuroscience, 2007 - Elsevier
Auditory feedback plays an important role in natural speech production. We conducted a
functional magnetic resonance imaging (fMRI) experiment using a transformed auditory …

Primer effects by conspecific odors in house mice: a new perspective in the study of primer effects on reproductive activities

S Koyama - Hormones and Behavior, 2004 - Elsevier
Half a century has passed since the first report of the influence of odors on mice. Odors are
known to influence behavior (signaling effect) and affect the physiology (primer effect) of mice…

[HTML][HTML] Endurance training slows breast tumor growth in mice by suppressing Treg cells recruitment to tumors

A Hagar, Z Wang, S Koyama, JA Serrano, L Melo… - BMC cancer, 2019 - Springer
Background Aerobic exercise has been shown to slow tumor progression in rodents and
humans, but the mechanisms behind this effect are still unclear. Here we show that aerobic …

Human face perception traced by magneto-and electro-encephalography

S Watanabe, R Kakigi, S Koyama, E Kirino - Cognitive Brain Research, 1999 - Elsevier
The temporal and spatial processing of face perception in normal subjects was traced by
magnetoencephalography (MEG) and electroencephalography (EEG). We used 5 different …