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  1. Article: Adherence to and persistence with lacosamide, perampanel, lamotrigine, and levetiracetam in adult patients with focal epilepsy in Japan: A descriptive cohort study using a claims database.

    Chen, Siming / Fukasawa, Toshiki / Ikeda, Akio / Takeuchi, Masato / Shimotake, Akihiro / Yoshida, Satomi / Kawakami, Koji

    Heliyon

    2023  Volume 9, Issue 4, Page(s) e15017

    Abstract: Objective: We evaluated adherence to and 1-year persistence of two third-generation anti-seizure medications (ASMs), lacosamide and perampanel, in adult patients with focal epilepsy, compared with lamotrigine and levetiracetam.: Methods: A cohort ... ...

    Abstract Objective: We evaluated adherence to and 1-year persistence of two third-generation anti-seizure medications (ASMs), lacosamide and perampanel, in adult patients with focal epilepsy, compared with lamotrigine and levetiracetam.
    Methods: A cohort study was conducted using a Japanese health insurance claims database (JMDC Inc.). We identified patients with adult-onset focal epilepsy who initiated any of the four ASMs between August 31, 2016, and October 31, 2019. Patients were further classified into ASM-naïve patients initiating any of the four ASMs as first-line treatment, and ASM-experienced patients initiating any of the four ASMs as second- or later-line treatment. Outcomes included adherence (proportion of days covered [PDC], defined as the total number of days covered by ASMs divided by the total number of days in the follow-up period) and 1-year persistence for the four ASMs.
    Results: We identified 141 lacosamide, 75 perampanel, 80 lamotrigine, and 530 levetiracetam initiators. Among these, the proportion of ASM-naïve patients was highest in the levetiracetam group (60.8%), followed by the lamotrigine (25.0%), lacosamide (20.6%), and perampanel groups (1.3%). Mean PDC (standard deviation) was similar across the four groups, at 0.95 (0.08) for lacosamide, 0.93 (0.12) for perampanel, 0.92 (0.10) for lamotrigine and 0.94 (0.11) for levetiracetam. The proportion of patients persisting with treatment for 1 year was highest in the lacosamide group (73.0%), followed by the levetiracetam (58.3%), lamotrigine (57.5%), and perampanel groups (54.7%). In ASM-naïve patients, adherence and 1-year persistence were almost identical in the lacosamide, lamotrigine, and levetiracetam groups. Results for ASM-experienced patients did not significantly differ from those of all patients.
    Significance: With regard to adherence and 1-year persistence, lacosamide may be equal to or better than lamotrigine and levetiracetam, especially in patients with experienced ASM, while perampanel may be comparable to lamotrigine and levetiracetam in patients with experienced ASM.
    Language English
    Publishing date 2023-03-29
    Publishing country England
    Document type Journal Article
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2023.e15017
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Adherence to and persistence with lacosamide, perampanel, lamotrigine, and levetiracetam in adult patients with focal epilepsy in Japan

    Siming Chen / Toshiki Fukasawa / Akio Ikeda / Masato Takeuchi / Akihiro Shimotake / Satomi Yoshida / Koji Kawakami

    Heliyon, Vol 9, Iss 4, Pp e15017- (2023)

    A descriptive cohort study using a claims database

    2023  

    Abstract: Objective: We evaluated adherence to and 1-year persistence of two third-generation anti-seizure medications (ASMs), lacosamide and perampanel, in adult patients with focal epilepsy, compared with lamotrigine and levetiracetam. Methods: A cohort study ... ...

    Abstract Objective: We evaluated adherence to and 1-year persistence of two third-generation anti-seizure medications (ASMs), lacosamide and perampanel, in adult patients with focal epilepsy, compared with lamotrigine and levetiracetam. Methods: A cohort study was conducted using a Japanese health insurance claims database (JMDC Inc.). We identified patients with adult-onset focal epilepsy who initiated any of the four ASMs between August 31, 2016, and October 31, 2019. Patients were further classified into ASM-naïve patients initiating any of the four ASMs as first-line treatment, and ASM-experienced patients initiating any of the four ASMs as second- or later-line treatment. Outcomes included adherence (proportion of days covered [PDC], defined as the total number of days covered by ASMs divided by the total number of days in the follow-up period) and 1-year persistence for the four ASMs. Results: We identified 141 lacosamide, 75 perampanel, 80 lamotrigine, and 530 levetiracetam initiators. Among these, the proportion of ASM-naïve patients was highest in the levetiracetam group (60.8%), followed by the lamotrigine (25.0%), lacosamide (20.6%), and perampanel groups (1.3%). Mean PDC (standard deviation) was similar across the four groups, at 0.95 (0.08) for lacosamide, 0.93 (0.12) for perampanel, 0.92 (0.10) for lamotrigine and 0.94 (0.11) for levetiracetam. The proportion of patients persisting with treatment for 1 year was highest in the lacosamide group (73.0%), followed by the levetiracetam (58.3%), lamotrigine (57.5%), and perampanel groups (54.7%). In ASM-naïve patients, adherence and 1-year persistence were almost identical in the lacosamide, lamotrigine, and levetiracetam groups. Results for ASM-experienced patients did not significantly differ from those of all patients. Significance: With regard to adherence and 1-year persistence, lacosamide may be equal to or better than lamotrigine and levetiracetam, especially in patients with experienced ASM, while perampanel may be comparable to lamotrigine and ...
    Keywords Pharmacoepidemiology ; Proportion of days covered ; Real-world evidence ; Third-generation anti-seizure medication ; Science (General) ; Q1-390 ; Social sciences (General) ; H1-99
    Subject code 616
    Language English
    Publishing date 2023-04-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Adherence to and persistence with lacosamide, perampanel, lamotrigine, and levetiracetam in adult patients with focal epilepsy in Japan: A descriptive cohort study using a claims database

    Chen, Siming / Fukasawa, Toshiki / Ikeda, Akio / Takeuchi, Masato / Shimotake, Akihiro / Yoshida, Satomi / Kawakami, Kōji

    Heliyon. 2023 Apr., v. 9, no. 4 p.e15017-

    2023  

    Abstract: We evaluated adherence to and 1-year persistence of two third-generation anti-seizure medications (ASMs), lacosamide and perampanel, in adult patients with focal epilepsy, compared with lamotrigine and levetiracetam. A cohort study was conducted using a ... ...

    Abstract We evaluated adherence to and 1-year persistence of two third-generation anti-seizure medications (ASMs), lacosamide and perampanel, in adult patients with focal epilepsy, compared with lamotrigine and levetiracetam. A cohort study was conducted using a Japanese health insurance claims database (JMDC Inc.). We identified patients with adult-onset focal epilepsy who initiated any of the four ASMs between August 31, 2016, and October 31, 2019. Patients were further classified into ASM-naïve patients initiating any of the four ASMs as first-line treatment, and ASM-experienced patients initiating any of the four ASMs as second- or later-line treatment. Outcomes included adherence (proportion of days covered [PDC], defined as the total number of days covered by ASMs divided by the total number of days in the follow-up period) and 1-year persistence for the four ASMs. We identified 141 lacosamide, 75 perampanel, 80 lamotrigine, and 530 levetiracetam initiators. Among these, the proportion of ASM-naïve patients was highest in the levetiracetam group (60.8%), followed by the lamotrigine (25.0%), lacosamide (20.6%), and perampanel groups (1.3%). Mean PDC (standard deviation) was similar across the four groups, at 0.95 (0.08) for lacosamide, 0.93 (0.12) for perampanel, 0.92 (0.10) for lamotrigine and 0.94 (0.11) for levetiracetam. The proportion of patients persisting with treatment for 1 year was highest in the lacosamide group (73.0%), followed by the levetiracetam (58.3%), lamotrigine (57.5%), and perampanel groups (54.7%). In ASM-naïve patients, adherence and 1-year persistence were almost identical in the lacosamide, lamotrigine, and levetiracetam groups. Results for ASM-experienced patients did not significantly differ from those of all patients. With regard to adherence and 1-year persistence, lacosamide may be equal to or better than lamotrigine and levetiracetam, especially in patients with experienced ASM, while perampanel may be comparable to lamotrigine and levetiracetam in patients with experienced ASM.
    Keywords Japan ; adults ; cohort studies ; databases ; epilepsy ; health insurance ; standard deviation ; Pharmacoepidemiology ; Proportion of days covered ; Real-world evidence ; Third-generation anti-seizure medication
    Language English
    Dates of publication 2023-04
    Publishing place Elsevier Ltd
    Document type Article ; Online
    Note Use and reproduction
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2023.e15017
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: The setting of heartbeat acceptance windows on gated myocardial perfusion single-photon emission computed tomography using CZT camera: effect of left ventricular functional parameters in patients with arrhythmia.

    Tsuboi, Kunihito / Nagaki, Akio / Shibutani, Takayuki / Kawakami, Yuji / Onoguchi, Masahisa

    Nuclear medicine communications

    2021  Volume 42, Issue 9, Page(s) 1005–1010

    Abstract: Objectives: Consistently variable with several peaks in heart rate histogram (e.g. bigeminy and trigeminy) is one of the arrhythmia types. We investigated the effects of gating error by consistently variable patients on left ventricular (LV) functional ... ...

    Abstract Objectives: Consistently variable with several peaks in heart rate histogram (e.g. bigeminy and trigeminy) is one of the arrhythmia types. We investigated the effects of gating error by consistently variable patients on left ventricular (LV) functional with cadmium zinc telluride (CZT) camera. The purpose of this study is to evaluate LV functional parameters by setting different heartbeat acceptance windows on gated myocardial perfusion single-photon emission computed tomography (SPECT) (MPS) in consistently variable patients, using echocardiography (echo) as a reference.
    Materials and methods: Sixteen consistently variable patients underwent the gated MPS using a D-SPECT. The MPS images were obtained by setting two different types of heartbeat acceptance windows. The heartbeat acceptance windows were set to include only one peak and two peaks of the maximum count peaks, respectively.
    Results: Mean end-diastolic volume, end-systolic volume and left ventricular ejection fraction (LVEF) were 112.7 mL, 62.2 mL and 51.3% for one peak, 114.5 mL, 66.1 mL and 47.1% for two peak, and 113.0 mL, 54.2 mL and 54.1% for echo, respectively. The mean differences between two peaks and echo in LVEF were larger than those of between one peak and echo.
    Conclusion: Our study suggests that setting the heartbeat acceptance window of one peak was suitable for accurate measurement of LV function in consistently variable patients.
    MeSH term(s) Aged ; Heart Rate ; Humans ; Middle Aged ; Tomography, Emission-Computed, Single-Photon ; Ventricular Function, Left
    Language English
    Publishing date 2021-04-14
    Publishing country England
    Document type Journal Article
    ZDB-ID 758141-5
    ISSN 1473-5628 ; 0143-3636
    ISSN (online) 1473-5628
    ISSN 0143-3636
    DOI 10.1097/MNM.0000000000001417
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Comparison of safety and effectiveness between etanercept biosimilar LBEC0101 and reference in patients with rheumatoid arthritis in real-world data using the KURAMA cohort.

    Kawakami, Tomoya / Masui, Sho / Onishi, Akira / Onizawa, Hideo / Fujii, Takayuki / Murakami, Kosaku / Murata, Koichi / Tanaka, Masao / Shimada, Takashi / Nakagawa, Shunsaku / Matsuda, Shuichi / Morinobu, Akio / Terada, Tomohiro / Yonezawa, Atsushi

    Modern rheumatology

    2024  

    Abstract: Objectives: Biosimilars are anticipated to be widely used in the treatment of rheumatoid arthritis (RA), owing to their cost efficiency; LBEC0101 was the first etanercept (ETN) biosimilar approved in Japan. However, there are limited real-world data ... ...

    Abstract Objectives: Biosimilars are anticipated to be widely used in the treatment of rheumatoid arthritis (RA), owing to their cost efficiency; LBEC0101 was the first etanercept (ETN) biosimilar approved in Japan. However, there are limited real-world data comparing its safety and effectiveness with those of a reference product.
    Methods: This study used data from the Kyoto University Rheumatoid Arthritis Management Alliance cohort, including patients with RA who received ETN therapy-ETN reference product (ETN-RP) or LBEC0101-between 2015 and 2021. Serum ETN levels were measured using liquid chromatography-tandem mass spectrometry.
    Results: The 1-year continuation rates of ETN-RP and LBEC0101 were 58.7% and 74.4%, respectively. Effectiveness of treatment was evaluated in 18 patients; both products significantly reduced the 28-joint RA disease activity score and erythrocyte sedimentation rate (DAS28-ESR). Moreover, to determine equivalence, we analysed 11 patients who switched from ETN-RP to LBEC0101; the DAS28-ESR and serum ETN levels before and after switching were not significantly different.
    Conclusions: This real-world cohort study confirmed that the biosimilar of ETN, LBEC0101, was comparable to the reference product in terms of continuation rate, effectiveness at initiation of introduction, and effect persistence before and after switching in clinical practice.
    Language English
    Publishing date 2024-03-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 2078157-X
    ISSN 1439-7609 ; 1439-7595
    ISSN (online) 1439-7609
    ISSN 1439-7595
    DOI 10.1093/mr/roae018
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Complications associated with the use of enzyme-inducing and non-enzyme-inducing anti-seizure medications in the Japanese population: A retrospective cohort study.

    Gao, Jingwei / Seki, Tomotsugu / Usami, Kiyohide / Fan, Di / Ikeda, Akio / Kawakami, Koji

    Epilepsy & behavior : E&B

    2022  Volume 129, Page(s) 108610

    Abstract: Objective: Enzyme-inducing anti-seizure medications (EIASMs) may contribute to the development of complications such as fracture and cardiovascular disease. The objective of the study was to determine whether the use of EIASMs is associated with a ... ...

    Abstract Objective: Enzyme-inducing anti-seizure medications (EIASMs) may contribute to the development of complications such as fracture and cardiovascular disease. The objective of the study was to determine whether the use of EIASMs is associated with a higher risk of fracture and cardiovascular outcome in young Japanese patients with epilepsy.
    Method: Adult patients diagnosed with epilepsy and initiated a monotherapy with an anti-seizure medication (ASM) between 2008 and 2018 were included in the study. The primary outcomes were the occurrence of acute myocardial infarction (AMI) or stroke. The secondary outcome was fracture. We performed a propensity score-matched analysis (1:1) to control for imbalances in patient characteristics, and the matched hazard ratios (HRs) and 95% confidence intervals (CIs) were estimated using Cox proportional hazards models.
    Result: Of the 7115 eligible patients, 626 (8.79%) initiated treatment with EIASMs. The median age of the patients was 44 years (interquartile range: 31-54 years), and 56.2% were male. Propensity score matching generated 626 matched pairs of patients treated with EIASMs and non-EIASMs. There were no significant differences in the risk of stroke (EIASM group: n = 28[4.47%], non-EIASM group: n = 22[3.51%], HR: 1.47, 95% CI: 0.79-2.72, p = 0.22) or fracture (EIASM group: n = 7[1.12%], non-EIASM group: n = 5[0.80%], HR: 1.00, 95% CI: 0.29-3.45, p = 1.00) between the two groups. The hazard ratio for the occurrence of AMI could not be calculated due to the small number of events (EIASM group: n = 0[0.00], non-EIASM group: n = 2[0.32]).
    Significance: Our cohort study did not find increased risk of the occurrence of stroke, AMI, or fracture hospitalization with the use of enzyme-inducing ASMs. Although the findings suggested that exposure to EIASMs does not appear to increase the risk of complications in young patients, caution should be taken as patients with epilepsy tend to take medication in the long run.
    MeSH term(s) Adult ; Cohort Studies ; Epilepsy/epidemiology ; Humans ; Japan/epidemiology ; Male ; Middle Aged ; Myocardial Infarction/drug therapy ; Myocardial Infarction/epidemiology ; Retrospective Studies
    Language English
    Publishing date 2022-02-26
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2010587-3
    ISSN 1525-5069 ; 1525-5050
    ISSN (online) 1525-5069
    ISSN 1525-5050
    DOI 10.1016/j.yebeh.2022.108610
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: IL-27 regulates the differentiation of follicular helper NKT cells via metabolic adaptation of mitochondria.

    Kamii, Yasuhiro / Hayashizaki, Koji / Kanno, Toshio / Chiba, Akio / Ikegami, Taku / Saito, Mitsuru / Akeda, Yukihiro / Ohteki, Toshiaki / Kubo, Masato / Yoshida, Kiyotsugu / Kawakami, Kazuyoshi / Oishi, Kazunori / Araya, Jun / Kuwano, Kazuyoshi / Kronenberg, Mitchell / Endo, Yusuke / Kinjo, Yuki

    Proceedings of the National Academy of Sciences of the United States of America

    2024  Volume 121, Issue 9, Page(s) e2313964121

    Abstract: Invariant natural killer T (iNKT) cells are innate-like T lymphocytes that express an invariant T cell receptor α chain and contribute to bridging innate and acquired immunity with rapid production of large amounts of cytokines after stimulation. Among ... ...

    Abstract Invariant natural killer T (iNKT) cells are innate-like T lymphocytes that express an invariant T cell receptor α chain and contribute to bridging innate and acquired immunity with rapid production of large amounts of cytokines after stimulation. Among effecter subsets of iNKT cells, follicular helper NKT (NKT
    MeSH term(s) Animals ; Mice ; Interleukin-27/metabolism ; Natural Killer T-Cells ; T-Lymphocytes, Helper-Inducer ; Cytokines/metabolism ; Cell Differentiation ; Mice, Inbred C57BL
    Chemical Substances Interleukin-27 ; Cytokines
    Language English
    Publishing date 2024-02-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209104-5
    ISSN 1091-6490 ; 0027-8424
    ISSN (online) 1091-6490
    ISSN 0027-8424
    DOI 10.1073/pnas.2313964121
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Prescription patterns of antiepileptic drugs for adult patients with newly diagnosed focal epilepsy from 2006 to 2017 in Japan.

    Chen, Siming / Yoshida, Satomi / Matsumoto, Riki / Ikeda, Akio / Kawakami, Koji

    Epilepsy research

    2020  Volume 169, Page(s) 106503

    Abstract: Objective: This study aimed to examine prescription patterns of antiepileptic drugs (AEDs) for adult patients with newly diagnosed focal epilepsy in Japan and whether these patterns adhere to the 2010 Japanese Society of Neurology Guidelines of Epilepsy ...

    Abstract Objective: This study aimed to examine prescription patterns of antiepileptic drugs (AEDs) for adult patients with newly diagnosed focal epilepsy in Japan and whether these patterns adhere to the 2010 Japanese Society of Neurology Guidelines of Epilepsy Treatment.
    Methods: Data from the JMDC Claims Database were obtained for patients aged between 20 and 65 years with newly diagnosed focal epilepsy who were prescribed AEDs between 2006 and 2017. Available prescription information up to the patient's first year was recorded and longitudinal descriptive statistics, Cochran Armitage Trend (CAT) tests, and annual percentage change (APC) were used to analyze AED trends and overall guideline adherence. In addition, logistic regression analyses were used to compare these results across different health facilities.
    Results: A total of 6024 adult patients with newly diagnosed focal epilepsy were enrolled. The prescription of new AEDs increased significantly (CAT, p < 0.001, APC = 28.74 %) up to 36.8 % of all prescriptions in 2017 when compared to 2006. Among new AEDs, prescriptions for levetiracetam increased most rapidly and were followed by lamotrigine. In contrast, prescriptions for older AEDs, especially valproate, decreased over this same time period. The average guideline adherence rate from 2010 to 2017 was 75.3 %, and was not significantly different over time (CAT, p = 0.55). Health facilities with either more than 500 beds or between 20-499 beds had higher odds of prescribing new AEDs and improved guideline adherence when compared to facilities with 0-19 beds.
    Conclusion: Prescription patterns of AEDs for adult patients with newly diagnosed focal epilepsy exhibited a trend from older to new AED classes between 2006 and 2017, with consistent, high guideline adherence from 2010 to 2017. Health facilities with 0-19 beds were less likely to prescribe new AEDs and completely adhere to proposed guidelines.
    MeSH term(s) Adult ; Anticonvulsants/therapeutic use ; Drug Prescriptions ; Epilepsies, Partial/diagnosis ; Epilepsies, Partial/drug therapy ; Humans ; Japan ; Levetiracetam/therapeutic use
    Chemical Substances Anticonvulsants ; Levetiracetam (44YRR34555)
    Language English
    Publishing date 2020-11-18
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 632939-1
    ISSN 1872-6844 ; 0920-1211
    ISSN (online) 1872-6844
    ISSN 0920-1211
    DOI 10.1016/j.eplepsyres.2020.106503
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Pemafibrate, a novel selective PPARα modulator, attenuates tamoxifen-induced fatty liver disease.

    Tanaka, Naoki / Mukaiyama, Kazutaka / Morikawa, Akio / Kawakami, Satoshi / Ichise, Yasuyuki / Kimura, Takefumi / Horiuchi, Akira

    Clinical journal of gastroenterology

    2021  Volume 14, Issue 3, Page(s) 846–851

    Abstract: Estrogen receptor (ER) antagonists, such as tamoxifen and toremifene, are widely used as adjuvant therapies for ER-positive breast cancer. These agents sometimes cause hepatosteatosis and steatohepatitis and it is problematic whether these agents should ... ...

    Abstract Estrogen receptor (ER) antagonists, such as tamoxifen and toremifene, are widely used as adjuvant therapies for ER-positive breast cancer. These agents sometimes cause hepatosteatosis and steatohepatitis and it is problematic whether these agents should be withdrawn due to fatty liver disease and liver dysfunction. We herein describe a patient with fatty liver disease and hypertriglyceridemia during tamoxifen treatment, which significantly improved by adding pemafibrate, a novel PPARα activator designated as a selective PPARα modulator. Serial analysis during pemafibrate treatment revealed significant increases in circulating ketone bodies, which are indicators of hepatic fatty acid (FA) β-oxidation. As far as we know, this is the first report demonstrating the beneficial effect of pemafibrate on tamoxifen-induced fatty liver disease, which is likely due to enhanced hepatic FA β-oxidation by PPARα stimulation. Future large-scale studies will be needed to verify the current observation.
    MeSH term(s) Benzoxazoles ; Butyrates ; Humans ; Liver ; PPAR alpha ; Tamoxifen/adverse effects
    Chemical Substances (R)-2-(3-((benzoxazol-2-yl-d4 (3-(4-methoxyphenoxy-d7)propyl)amino)methyl)phenoxy) butanoic acid ; Benzoxazoles ; Butyrates ; PPAR alpha ; Tamoxifen (094ZI81Y45)
    Language English
    Publishing date 2021-03-22
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2429411-1
    ISSN 1865-7265 ; 1865-7257
    ISSN (online) 1865-7265
    ISSN 1865-7257
    DOI 10.1007/s12328-021-01386-7
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  10. Article ; Online: Taste receptor gene expression is associated with decreased eGFR in patients with diabetes.

    Beppu, Kana / Kawakami, Ayuka / Mishima, Yuna / Tsutsumi, Rie / Kuroda, Masashi / Mori, Hiroyasu / Kuroda, Akio / Matsuhisa, Munehisa / Sakaue, Hiroshi

    The journal of medical investigation : JMI

    2022  Volume 69, Issue 1.2, Page(s) 120–126

    Abstract: Dysgeusia is not only associated with zinc deficiency but also with certain drugs or diseases, including diabetes and renal failure. It often lowers the patient's quality of life and hinders access to proper nutrition. The underlying mechanism is unclear ...

    Abstract Dysgeusia is not only associated with zinc deficiency but also with certain drugs or diseases, including diabetes and renal failure. It often lowers the patient's quality of life and hinders access to proper nutrition. The underlying mechanism is unclear and there is a lack of awareness among patients. Here, we focused on lingual taste receptor gene expression in diabetes and elucidated the relationship between taste receptor gene expression and renal function. Forty-seven patients with diabetes and 10 healthy subjects (control group) were enrolled. Lingual foliate papillae were scraped and the derived cDNA was quantified by real-time polymerase chain reaction. Dysgeusia was assessed using SALSAVE?. All statistical analyses were performed using JMP? software 13. The expression of T1R1 and T1R2 was significantly upregulated in type 2 diabetes patients as compared with that in healthy subjects (P<0.01) but did not change in type 1 diabetes patients. T1R3 expression positively correlated and Scnn1 expression negatively correlated with estimated glomerular filtration rate, suggesting that altered taste receptor gene expression could reflect impaired renal function. Thus, alterations in T1R3 and Scnn1 expression in diabetes correlated with renal function. Taste receptor gene expression dysregulation could indicate dysgeusia associated with impaired renal function in patients with diabetes. J. Med. Invest. 69 : 120-126, February, 2022.
    MeSH term(s) Diabetes Mellitus, Type 2/complications ; Diabetes Mellitus, Type 2/genetics ; Dysgeusia/genetics ; Gene Expression ; Humans ; Quality of Life ; Receptors, G-Protein-Coupled/genetics ; Receptors, G-Protein-Coupled/metabolism ; Taste/genetics
    Chemical Substances Receptors, G-Protein-Coupled
    Language English
    Publishing date 2022-04-24
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1435233-3
    ISSN 1349-6867 ; 1343-1420
    ISSN (online) 1349-6867
    ISSN 1343-1420
    DOI 10.2152/jmi.69.120
    Database MEDical Literature Analysis and Retrieval System OnLINE

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