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  1. Article ; Online: Calcimimetics treatment strategy for serum calcium and phosphate management in patients with secondary hyperparathyroidism undergoing dialysis: A systematic review and meta-analysis of randomized studies.

    Nakai, Kentaro / Kono, Keiji / Yamada, Shunsuke / Taniguchi, Masatomo / Hamano, Takayuki / Fukagawa, Masafumi

    Therapeutic apheresis and dialysis : official peer-reviewed journal of the International Society for Apheresis, the Japanese Society for Apheresis, the Japanese Society for Dialysis Therapy

    2024  

    Abstract: Introduction: Several calcimimetics, other than cinacalcet, are commercially available; however, their effects on calcium and phosphate levels have not yet been fully studied. We conducted a systematic review and meta-analysis of randomized controlled ... ...

    Abstract Introduction: Several calcimimetics, other than cinacalcet, are commercially available; however, their effects on calcium and phosphate levels have not yet been fully studied. We conducted a systematic review and meta-analysis of randomized controlled trials to evaluate the impact of calcimimetics on the management of serum calcium and phosphate levels in patients with secondary hyperparathyroidism undergoing dialysis.
    Methods: A systematic literature search through October 2023 and a meta-analysis were conducted on the effects of upacicalcet, etelcalcetide, evocalcet, and cinacalcet on serum calcium and phosphate levels in patients with secondary hyperparathyroidism undergoing dialysis; we searched PubMed, Ovid MEDLINE, and the Cochrane Central Register of Controlled Trials, and 21 studies comprising 6371 patients undergoing dialysis were included.
    Results: Participants treated with calcimimetics had lower serum calcium and phosphate levels than placebo.
    Conclusion: Calcimimetics significantly reduced serum calcium and phosphate levels compared to placebo in patients with secondary hyperparathyroidism undergoing dialysis, independent of therapeutic strategy or concomitant vitamin D treatment.
    Language English
    Publishing date 2024-03-18
    Publishing country Australia
    Document type Journal Article
    ZDB-ID 2119809-3
    ISSN 1744-9987 ; 1091-6660 ; 1744-9979
    ISSN (online) 1744-9987
    ISSN 1091-6660 ; 1744-9979
    DOI 10.1111/1744-9987.14125
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Unveiling controlling factors of the S0/S1 minimum-energy conical intersection (3): Frozen orbital analysis based on the spin-flip theory.

    Yoshikawa, Takeshi / Ikabata, Yasuhiro / Nakai, Hiromi / Ogawa, Kentaro / Sakata, Ken

    The Journal of chemical physics

    2023  Volume 158, Issue 20

    Abstract: ... the systematic interpretation of the minimum energy CI (MECI) geometries is unclear. A previous study [Nakai et ...

    Abstract Conical intersections (CIs), which indicate the crossing of two or more adiabatic electronic states, are crucial in the mechanisms of photophysical, photochemical, and photobiological processes. Although various geometries and energy levels have been reported using quantum chemical calculations, the systematic interpretation of the minimum energy CI (MECI) geometries is unclear. A previous study [Nakai et al., J. Phys. Chem. A 122, 8905 (2018)] performed frozen orbital analysis (FZOA) based on time-dependent density functional theory (TDDFT) at the MECI formed between the ground and first electronic excited states (S0/S1 MECI), thereby inductively clarifying two controlling factors. However, one of the factors that the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) energy gap became close to the HOMO-LUMO Coulomb integral was not valid in the case of spin-flip TDDFT (SF-TDDFT), which is frequently used as a means of the geometry optimization of MECI [Inamori et al., J. Chem. Phys. 152, 144108 (2020)]. This study revisited the controlling factors using FZOA for the SF-TDDFT method. Based on spin-adopted configurations within a minimum active space, the S0-S1 excitation energy is approximately represented by the HOMO and LUMO energy gap ΔεHL, a contribution from Coulomb integrals JHL″ and that from the HOMO-LUMO exchange integral KHL″. Furthermore, numerical applications of the revised formula at the SF-TDDFT method confirmed the control factors of S0/S1 MECI.
    Language English
    Publishing date 2023-05-26
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3113-6
    ISSN 1089-7690 ; 0021-9606
    ISSN (online) 1089-7690
    ISSN 0021-9606
    DOI 10.1063/5.0151492
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: [Efficacy and safety of selective estrogen receptor modulators in patients with advanced chronic kidney disease].

    Nakai, Kentaro

    Clinical calcium

    2016  Volume 26, Issue 9, Page(s) 1325–1332

    Abstract: Selective estrogen receptor modulators(SERMs)have beneficial effects on the improvement of bone mineral density of the spine and hip, and decrease the vertebral fracture in postmenopausal women. Similar to patients with advanced chronic kidney disease, ... ...

    Abstract Selective estrogen receptor modulators(SERMs)have beneficial effects on the improvement of bone mineral density of the spine and hip, and decrease the vertebral fracture in postmenopausal women. Similar to patients with advanced chronic kidney disease, including dialysis patients, however, SERMs cannot decrease the risk of hip fracture, which is extremely high in Japanese dialysis patients. One of the most important disadvantages of SERMs is an increase in the risk of venous thromboembolic events and fatal stroke in high-risk groups of the Framingham Stroke Risk Score. On the other hand, SERMs may be used in unique osteoporosis drugs for reducing the incidence and progression of breast cancer. Moreover, SERMs attenuate oxidative stress and may lessen the deterioration of kidney function in patients with chronic kidney disease. The evidences for the efficacy and safety of SERMs in patients with advanced chronic kidney disease are insufficient, and knowledge concerning the selection and indication of osteoporosis drugs for those patients need to be developed.
    MeSH term(s) Animals ; Bone Density/drug effects ; Bone Diseases/drug therapy ; Bone Diseases/etiology ; Creatinine/blood ; Humans ; Renal Insufficiency, Chronic/complications ; Selective Estrogen Receptor Modulators/adverse effects ; Selective Estrogen Receptor Modulators/therapeutic use
    Chemical Substances Selective Estrogen Receptor Modulators ; Creatinine (AYI8EX34EU)
    Language Japanese
    Publishing date 2016-09
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2386417-5
    ISSN 0917-5857
    ISSN 0917-5857
    DOI CliCa160913251332
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Making adaptive governance work in biodiversity conservation

    Kentaro Miyanaga / Katsuki Nakai

    Ecology and Society, Vol 26, Iss 2, p

    lessons in invasive alien aquatic plant management in Lake Biwa, Japan

    2021  Volume 11

    Abstract: Invasive alien species are a serious threat to freshwater ecosystems and overall biodiversity. Although invasive alien species management in the form of environmental governance has often been practiced under an adaptive governance scheme, prevailing ... ...

    Abstract Invasive alien species are a serious threat to freshwater ecosystems and overall biodiversity. Although invasive alien species management in the form of environmental governance has often been practiced under an adaptive governance scheme, prevailing theoretical and practical difficulties must be solved to enhance policy effectiveness and outcomes. Our objective was to clarify how it is possible to make adaptive governance work in biodiversity conservation, especially invasive alien species management in freshwater ecosystems. To fulfill this objective, we investigated two analytical concepts - invasion management and adaptive governance - and studied a case of invasive alien aquatic plant management in Lake Biwa, Japan. The conclusion of our analysis and the lessons learned can be summarized as the following three points: First, whether learning processes are properly equipped by local environmental governance is critical for adaptive governance. We provide insights into three aspects of learning: the system where scientific knowledge is produced and shared for policy preparation, implementation, and evaluation; where social learning and processes that support social learning occur; and where a process of organizational learning occurs. Second, we discuss the role and function of government in adaptive governance, which indicates that interactive governance is possible even when a government initiates a governing process, and that an interactive governing structure would be fundamental for addressing social-ecological complexities and uncertainties. Third, the transition from symptomatic treatments toward precautionary actions for invasive alien species, which is essential for policy effectiveness and outcomes, can be fostered by an interactive governing structure. In addition, organizational learning can induce the transition, through which the competency trap caused by conformity bias in invasive alien species management could be avoided.
    Keywords adaptive governance ; biodiversity conservation ; environmental governance ; invasive alien species ; lake biwa ; ludwigia grandiflora ; Biology (General) ; QH301-705.5 ; Ecology ; QH540-549.5
    Subject code 333
    Language English
    Publishing date 2021-06-01T00:00:00Z
    Publisher Resilience Alliance
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Statin Use Influence on the Occurrence of Acute Kidney Injury in Patients with Peripheral Arterial Disease.

    Kanai, Daisuke / Fujii, Hideki / Nakai, Kentaro / Kono, Keiji / Watanabe, Kentaro / Goto, Shunsuke / Nishi, Shinichi

    Journal of atherosclerosis and thrombosis

    2022  Volume 29, Issue 11, Page(s) 1646–1654

    Abstract: Aim: Acute kidney injury (AKI) is an important clinical issue in the diagnosis and treatment of cardiovascular diseases. The association between pretreatment by statins and the occurrence of AKI in patients with peripheral arterial diseases (PAD) ... ...

    Abstract Aim: Acute kidney injury (AKI) is an important clinical issue in the diagnosis and treatment of cardiovascular diseases. The association between pretreatment by statins and the occurrence of AKI in patients with peripheral arterial diseases (PAD) remains unclear. Therefore, we examined the association between statin therapy and the occurrence of AKI in patients with PAD.
    Methods: We retrospectively analyzed data from the endovascular treatment (EVT) database in our hospital. A total of 295 patients who underwent angiography and/or intervention for PAD between October 2011 and March 2016 were enrolled and divided into two groups: those without statins (control group; N=157) and those with statins (statin group; N=138) for at least 1 month before admission. We examined the occurrence of AKI and its related factors in these patients.
    Results: The serum creatinine levels, dose of contrast medium, use of a renin-angiotensin system inhibitor, smoking habit, and blood pressure were similar in both groups. The statin group had more diabetes patients, had patients who were significantly younger, had patients with a higher body mass index (BMI), and had patients with lower low-density lipoprotein cholesterol than the control group. With regard to the occurrence of AKI, there was a significantly lower incidence in the statin group compared with the control group (5% vs. 16%, p<0.05). The result of the multivariate analysis indicated that statin therapy was significantly correlated with lower occurrence rates of AKI (p<0.05).
    Conclusions: Our study suggests that statin therapy might prevent the occurrence of AKI after angiography and/or intervention for PAD.
    MeSH term(s) Humans ; Hydroxymethylglutaryl-CoA Reductase Inhibitors/adverse effects ; Retrospective Studies ; Acute Kidney Injury/chemically induced ; Acute Kidney Injury/epidemiology ; Contrast Media ; Peripheral Arterial Disease/epidemiology ; Risk Factors
    Chemical Substances Hydroxymethylglutaryl-CoA Reductase Inhibitors ; Contrast Media
    Language English
    Publishing date 2022-01-09
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2011474-6
    ISSN 1880-3873 ; 1340-3478
    ISSN (online) 1880-3873
    ISSN 1340-3478
    DOI 10.5551/jat.63265
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Impact of physician interpretation of at-home ECG on clinically-detected AF.

    Senoo, Keitaro / Yukawa, Arito / Iwakoshi, Hibiki / Nishimura, Tetsuro / Shimoo, Satoshi / Inoue, Keiji / Sakatani, Tomohiko / Kakita, Ken / Hattori, Tetsuhisa / Kitajima, Hiroki / Nakai, Kentaro / Nishiuchi, Suguru / Nakata, Mitsuko / Teramukai, Satoshi / Shiraishi, Hirokazu / Matoba, Satoaki

    International journal of cardiology. Heart & vasculature

    2024  Volume 51, Page(s) 101378

    Language English
    Publishing date 2024-03-05
    Publishing country Ireland
    Document type Journal Article
    ZDB-ID 2818464-6
    ISSN 2352-9067
    ISSN 2352-9067
    DOI 10.1016/j.ijcha.2024.101378
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Methyl-

    Niitsu, Hikaru / Fukumitsu, Nobuyoshi / Tanaka, Keiichi / Mizumoto, Masashi / Nakai, Kei / Matsuda, Masahide / Ishikawa, Eiichi / Hatano, Kentaro / Hashimoto, Tsuyoshi / Kamizawa, Satoshi / Sakurai, Hideyuki

    Annals of nuclear medicine

    2024  Volume 38, Issue 4, Page(s) 305–314

    Abstract: Objective: To investigate differences in uptake regions between methyl-: Methods: Twenty consecutive patients with grade 3 or 4 glioma who had recurrence after postoperative radiotherapy (RT) between April 2016 and October 2017 were examined. The ... ...

    Abstract Objective: To investigate differences in uptake regions between methyl-
    Methods: Twenty consecutive patients with grade 3 or 4 glioma who had recurrence after postoperative radiotherapy (RT) between April 2016 and October 2017 were examined. The study was performed using simulation with the assumption that all patients received RT. The clinical target volume (CTV) was contoured using the Gd-enhanced region (CTV(Gd)), the tumor/normal tissue (T/N) ratios of
    Results: The Jaccard index (JI) for concordance of CTV (Gd) with CTVs using
    Conclusions: The region of
    MeSH term(s) Humans ; Methionine ; Brain Neoplasms/diagnostic imaging ; Brain Neoplasms/radiotherapy ; Brain Neoplasms/pathology ; Glioma/diagnostic imaging ; Glioma/radiotherapy ; Glioma/pathology ; Positron-Emission Tomography/methods ; Racemethionine ; Magnetic Resonance Imaging/methods
    Chemical Substances Methionine (AE28F7PNPL) ; Racemethionine (73JWT2K6T3)
    Language English
    Publishing date 2024-02-14
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1146984-5
    ISSN 1864-6433 ; 0914-7187
    ISSN (online) 1864-6433
    ISSN 0914-7187
    DOI 10.1007/s12149-024-01901-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Clostridium paraputrificum Bacteremia in a Patient with Rectal Cancer after Receiving Antibiotic Therapy for Acute Pharyngolaryngitis.

    Maeda, Yasunori / Miura, Ryo / Echizenya, Takuma / Hoshi, Kentaro / Kubo, Norihito / Nakai, Hajime / Matsumoto, Kazuhito / Ikejima, Shin / Kudo, Naomi / Matsubara, Atsushi

    Internal medicine (Tokyo, Japan)

    2023  

    Abstract: Clostridium paraputrificum bacteremia is very rare, and its clinical importance is poorly understood. An 86-year-old man was receiving lascufloxacin therapy for acute pharyngolaryngitis before presenting to our emergency department with a recurrent fever. ...

    Abstract Clostridium paraputrificum bacteremia is very rare, and its clinical importance is poorly understood. An 86-year-old man was receiving lascufloxacin therapy for acute pharyngolaryngitis before presenting to our emergency department with a recurrent fever. Two sets of blood cultures on admission revealed C. paraputrificum. A stool culture showed a reduced presence of intestinal commensal bacteria. After admission, the patient's fever resolved without antibiotics. Colonoscopy revealed a rectal tumor. Rectal tumor and microbial substitutions caused by antibiotics may have led to bacteremia. When treating C. paraputrificum bacteremia, physicians should be mindful of coexisting gastrointestinal disorders and a history of antibiotic administration.
    Language English
    Publishing date 2023-10-27
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 32371-8
    ISSN 1349-7235 ; 0021-5120 ; 0918-2918
    ISSN (online) 1349-7235
    ISSN 0021-5120 ; 0918-2918
    DOI 10.2169/internalmedicine.2192-23
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: [Magnesium homeostasis and its disturbances].

    Nakai, Kentaro

    Clinical calcium

    2012  Volume 22, Issue 8, Page(s) 1167–1172

    Abstract: Magnesium homeostasis is maintained through normal functions of the kidney, intestine, and bone. In the kidney, approximately 80% magnesium is filtered by the glomeruli. In general, 95% filtered magnesium is collectively reabsorbed in the proximal tubule ...

    Abstract Magnesium homeostasis is maintained through normal functions of the kidney, intestine, and bone. In the kidney, approximately 80% magnesium is filtered by the glomeruli. In general, 95% filtered magnesium is collectively reabsorbed in the proximal tubule (15%-20%) , thick ascending limb of Henle (TAL, 65%-75%) , and the distal convoluted tubule (DCT, 5%-10%) . In the TAL, magnesium reabsorption regulated by the paracellular pathway via claudin-16 is driven by electrochemical voltage. Chloride channel Kb and renal outer medullary potassium channels control this lumen-positive voltage. In the DCT, the transcellular pathway via transient receptor potential melastatin 6 (TRPM6) plays a fundamental role in the final 5%-10% magnesium reabsorption. The functions of TRPM6 depend on Na-Cl co-transporters and Na( + )-K( + )-ATPase. Defects in these regulatory proteins may cause inherited or drug-induced disorders of magnesium metabolism. Recently, some proteins have been confirmed to be responsible for magnesium homeostasis

    however, further research is required to elucidate the mechanisms underlying the maintenance of magnesium homeostasis.
    MeSH term(s) Chloride Channels/physiology ; Claudins/physiology ; Homeostasis/physiology ; Humans ; Intestinal Absorption ; Kidney Tubules, Distal/physiology ; Loop of Henle/physiology ; Magnesium/metabolism ; Potassium Channels/physiology ; Sodium Chloride/metabolism ; Sodium Chloride Symporters/physiology ; Sodium-Potassium-Exchanging ATPase/physiology ; TRPM Cation Channels/physiology ; Tissue Distribution
    Chemical Substances Chloride Channels ; Claudins ; Potassium Channels ; Sodium Chloride Symporters ; TRPM Cation Channels ; TRPM6 protein, human ; claudin 16 ; Sodium Chloride (451W47IQ8X) ; Sodium-Potassium-Exchanging ATPase (EC 3.6.3.9) ; Magnesium (I38ZP9992A)
    Language Japanese
    Publishing date 2012-08
    Publishing country Japan
    Document type English Abstract ; Journal Article ; Review
    ZDB-ID 2386417-5
    ISSN 0917-5857
    ISSN 0917-5857
    DOI CliCa120811671172
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Conduction gap mapping of linear ablation lesions with high-density mapping.

    Nakai, Kentaro / Kashiwa, Asami / Kunitomi, Akira / Matsuoka, Shunzo

    Journal of cardiovascular electrophysiology

    2020  Volume 31, Issue 8, Page(s) 1953–1963

    Abstract: Introduction: When performing linear ablation, creating contiguous and transmural lesions are technically challenging due to the difficulty in finding electrical conduction gaps. We hypothesized that high-density mapping could identify the gaps.: ... ...

    Abstract Introduction: When performing linear ablation, creating contiguous and transmural lesions are technically challenging due to the difficulty in finding electrical conduction gaps. We hypothesized that high-density mapping could identify the gaps.
    Methods and results: This study included consecutive patients who underwent conduction gap mapping of de novo lesions (41 patients, 55 lines) and previous lesions (25 patients, 34 lines). We analyzed the utility of bipolar and unipolar conduction gap mapping and retrospectively assessed the voltage and morphology of the bipolar electrograms at the gap sites. Bipolar and unipolar propagation maps were classified into three types: the propagation wavefront traveled through the linear ablation lesions (direct leak), the wavefront jumped to an opposite site across the line and returned to the line (jump and return leak), and others (indefinite leak). In the jump and return leak maps, the site where it returned suggested a conduction gap site. Bipolar propagation maps identified 30 (54.5%) conduction gaps and unipolar maps identified 40 (72.7%) gaps at de novo linear ablation lesions (P = .01), and 32 (94.1%) gaps and 33 (97.1%) gaps, respectively, at previous lesions (P = .56). Bipolar voltage mapping did not add any further efficacy in detecting conduction gaps, and the morphology of the electrograms recorded at the gap sites was not related to the types of propagation maps.
    Conclusion: Conduction gaps of linear ablation lesions can be visualized by high-density mapping with a high probability. Unipolar propagation, when used with bipolar mapping, may help detect conduction gap sites.
    MeSH term(s) Atrial Fibrillation/surgery ; Body Surface Potential Mapping ; Catheter Ablation ; Heart Atria/surgery ; Heart Conduction System/surgery ; Humans ; Retrospective Studies
    Language English
    Publishing date 2020-06-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1025989-2
    ISSN 1540-8167 ; 1045-3873
    ISSN (online) 1540-8167
    ISSN 1045-3873
    DOI 10.1111/jce.14604
    Database MEDical Literature Analysis and Retrieval System OnLINE

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