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  1. Article ; Online: Significance of seed dispersal by the largest frugivore for large-diaspore trees.

    Sato, Hiroki

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 19086

    Abstract: How do large-bodied frugivores contribute to seed dispersal of large-diaspore plants? This study examined seed dispersal effectiveness for two large-diaspore tree species, Astrotrichilia asterotricha (AA) and Abrahamia deflexa (AD), in a Madagascan ... ...

    Abstract How do large-bodied frugivores contribute to seed dispersal of large-diaspore plants? This study examined seed dispersal effectiveness for two large-diaspore tree species, Astrotrichilia asterotricha (AA) and Abrahamia deflexa (AD), in a Madagascan forest. I evaluated fruit removal rates through focal tree observations and factors affecting seedling recruitment up to the 2-year-old seedling stage. I confirmed brown lemur (Eulemur fulvus) as the sole disperser, removing 58.8% and 26.0% of fruits produced by AA and AD. Brown lemurs frequently visited large-crowned AA trees with high density of fallen fruits and more adjacent fruiting trees during seasons with low fruit diversity. Most AA seedlings were removed by predators, although canopy openness slightly improved seedling establishment. Although AD seeds were severely attacked by predators under mother trees, the seedlings survived under dispersal conditions distant from the mother trees, and with low density of diaspores. AD had a higher cumulative probability from fruit removal to seedling recruitment (6.5%) than AA (1.5%) in the first rainy season. This study clarifies the significance of seed dispersal to tree recruitment strategies, which vary among different combinations of tree species and large frugivores, i.e. quantitative dispersal to reach suitable microhabitats, and qualitative dispersal to escape from dangerous zones near mother trees.
    MeSH term(s) Animals ; Seed Dispersal ; Lemuridae ; Meliaceae ; Seedlings ; Anacardiaceae
    Language English
    Publishing date 2022-11-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-23018-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Paradigm shift in esophageal diverticulum treatment: is the peroral endoscopic myotomy (POEM) technique the best method?

    Sato, Hiroki

    Endoscopy

    2019  Volume 51, Issue 12, Page(s) 1117–1118

    MeSH term(s) Diverticulum, Esophageal ; Humans ; Myotomy
    Language English
    Publishing date 2019-11-27
    Publishing country Germany
    Document type Journal Article ; Comment
    ZDB-ID 80120-3
    ISSN 1438-8812 ; 0013-726X
    ISSN (online) 1438-8812
    ISSN 0013-726X
    DOI 10.1055/a-1012-1977
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

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    Zs.MO 162: Show issues

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  3. Article ; Online: Gastroparesis and Functional Dyspepsia: Spectrum of Gastroduodenal Neuromuscular Disorders or Unique Entities?

    Sato, Hiroki / Grover, Madhusudan

    Gastro hep advances

    2022  Volume 2, Issue 3, Page(s) 438–448

    Abstract: Gastroparesis is defined by delayed gastric emptying in the absence of mechanical obstruction of the stomach. Patients experience symptoms of nausea, vomiting, abdominal pain, fullness, and early satiety. The recognition of the disorder has progressed ... ...

    Abstract Gastroparesis is defined by delayed gastric emptying in the absence of mechanical obstruction of the stomach. Patients experience symptoms of nausea, vomiting, abdominal pain, fullness, and early satiety. The recognition of the disorder has progressed due to availability of gastric emptying scintigraphy and advancements made in understanding its pathophysiology and treatment options. The clinical presentation and treatment of gastroparesis overlap with a more commonly recognized disorder of gut-brain interaction, functional dyspepsia. Recent studies have reenergized the discussion whether these two are separate entities or perhaps reflect a spectrum of gastroduodenal neuromuscular disorders. The societal guidelines conflict on the utility of gastric emptying scintigraphy in assessment of patients with upper gastrointestinal symptoms. A better appraisal of similarities and differences between gastroparesis and functional dyspepsia will allow targeted treatment for these disorders. This is particularly important as specific pharmacological and endoscopic treatment options are being developed for gastroparesis which are unlikely to be helpful for functional dyspepsia. This review makes the case for considering these disorders in a spectrum where identification of both would most ideally position us toward providing the optimal clinical care.
    Language English
    Publishing date 2022-10-14
    Publishing country Netherlands
    Document type Journal Article
    ISSN 2772-5723
    ISSN (online) 2772-5723
    DOI 10.1016/j.gastha.2022.10.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Basic Examination of Haemoglobin Phase of Oxygenation and Deoxygenation in Resting State and Task Periods in Adults Using fNIRS.

    Jasni, Nursyarizah Amirah / Sato, Hiroki

    Advances in experimental medicine and biology

    2022  Volume 1395, Page(s) 189–198

    Abstract: Functional near-infrared spectroscopy (fNIRS) is a neuroimaging technique used to measure the relative changes in concentrations of oxygenated haemoglobin (oxy-Hb) and deoxygenated haemoglobin (deoxy-Hb) in the cerebral cortex. While most previous ... ...

    Abstract Functional near-infrared spectroscopy (fNIRS) is a neuroimaging technique used to measure the relative changes in concentrations of oxygenated haemoglobin (oxy-Hb) and deoxygenated haemoglobin (deoxy-Hb) in the cerebral cortex. While most previous studies using fNIRS have relied only on a single oxy-Hb or deoxy-Hb parameter to infer about neural activation, the phase difference between the oxy- and deoxy-Hb signals (haemoglobin phase of oxygenation and deoxygenation: hPod) has been reported to be an important biomarker for analysing haemodynamic characteristics of the brain in infants. In this study, we examined the basic characteristics of adult hPod to develop a new analysis method to detect more sensitive signals that reflect neural activation in adults using fNIRS. We measured the hPod of 12 healthy adults in the frontal and occipital cortex during rest and upon exposure to visual stimuli and the verbal working memory (WM) task. We found that the average hPod values during the entire measurement period ranged between π and 1.5π rad in all conditions. This result indicates that the phase differences in adults were generally close to a stable antiphase pattern (hPod values around π), regardless of the presence or absence of tasks and stimuli. However, when dynamic changes in hPod values were analysed, significant differences between the resting state and WM tasks were observed during activation period in the frontal and occipital regions. These results suggest that the analysis of dynamic hPod change is useful for detecting a subtle activation for cognitive tasks.
    MeSH term(s) Infant ; Adult ; Humans ; Spectroscopy, Near-Infrared/methods ; Oxyhemoglobins/metabolism ; Hemoglobins/metabolism ; Brain/metabolism ; Neuroimaging
    Chemical Substances Oxyhemoglobins ; Hemoglobins
    Language English
    Publishing date 2022-12-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 410187-X
    ISSN 0065-2598
    ISSN 0065-2598
    DOI 10.1007/978-3-031-14190-4_32
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Einzelsignatur: Show issues

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  5. Article ; Online: The Lambda stenting technique: a new approach to address EUS-guided biliary drainage-associated adverse events.

    Sato, Hiroki / Kawabata, Hidemasa / Fujiya, Mikihiro

    VideoGIE : an official video journal of the American Society for Gastrointestinal Endoscopy

    2023  Volume 9, Issue 2, Page(s) 107–114

    Abstract: Background and aims: EUS-guided biliary drainage (EUS-BD) has been performed increasingly worldwide, especially in patients with malignant tumors in which ERCP is difficult, patients with surgically altered GI tracts, and older patients who are at high ... ...

    Abstract Background and aims: EUS-guided biliary drainage (EUS-BD) has been performed increasingly worldwide, especially in patients with malignant tumors in which ERCP is difficult, patients with surgically altered GI tracts, and older patients who are at high risk for surgery. EUS-BD requires high-level skills and has limited options for managing adverse events, particularly when stent migration and cholangitis occur. Adverse events, such as persistent bile leakage from the fistula and continuous reflux from the GI tract, are believed to always have a risk of severe exacerbation that could threaten the patient's life.
    Methods: We encountered 2 cases of stent migrations and 1 case with repeated cholangitis in patients with malignant tumors among the patients who underwent EUS-BD. The migrated stent was visualized under EUS in 2 patients with stent migration, and an EUS-guided FNA needle was used to puncture the mesh of the stent. The cannulation catheter was directly inserted into the mesh of the stent in 1 case with repeated retrograde cholangitis, while the stent was visualized with an endoscope. Subsequently, a guidewire was inserted through the puncture site, and a second metal stent was deployed between the meshes of the first stent, bridging the GI wall again (Lambda stenting technique). All procedures were performed with the patient under general anesthesia, and the patients safely completed the intervention.
    Results: Patients' conditions significantly improved after the second stent insertion, allowing for chemotherapy resumption while maintaining their activities of daily living. The second stent remained in place without any migration, and the stent successfully prevented further cholangitis.
    Conclusions: The Lambda stenting technique is considered highly effective for managing stent migration and repeated cholangitis, which is a major EUS-BD adverse event. This procedure helps avoid more invasive surgeries when stent migration and cholangitis occur and contributes to expanding EUS-BD applicability.
    Language English
    Publishing date 2023-10-28
    Publishing country United States
    Document type Journal Article ; Review
    ISSN 2468-4481
    ISSN (online) 2468-4481
    DOI 10.1016/j.vgie.2023.10.010
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Simultaneous Presentation of Brainstem and Cerebellar Posterior Reversible Encephalopathy Syndrome With Acute Cerebral Infarction.

    Maruyama, Hajime / Fujikawa, Hirohisa / Takimiya, Ryuichi / Sato, Hiroki

    Cureus

    2023  Volume 15, Issue 2, Page(s) e34843

    Abstract: Posterior reversible encephalopathy syndrome (PRES) and cerebral infarction are both caused by hypertension, but they rarely occur together. If they do coexist, the selection of a management strategy is difficult because of their pathologic differences. ... ...

    Abstract Posterior reversible encephalopathy syndrome (PRES) and cerebral infarction are both caused by hypertension, but they rarely occur together. If they do coexist, the selection of a management strategy is difficult because of their pathologic differences. Here, we present an uncommon case of brainstem and cerebellar PRES combined with acute lacunar infarction. For this patient, we used an aggressive blood pressure-lowering regimen during the acute phase of his condition. Once the cerebral edema caused by PRES began to improve, antiplatelet therapy was initiated. The treatment was ultimately successful, and the patient was discharged home. A return to work is now planned. Given the rarity of this combination of conditions and a lack of published evidence for management, our report will contribute to the literature concerning the treatment for this combination of conditions.
    Language English
    Publishing date 2023-02-10
    Publishing country United States
    Document type Case Reports
    ZDB-ID 2747273-5
    ISSN 2168-8184
    ISSN 2168-8184
    DOI 10.7759/cureus.34843
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  7. Article: Situation of type specimens of

    Sato, Hiroki

    Mycology

    2017  Volume 8, Issue 4, Page(s) 303–307

    Abstract: Information about authentic specimens ... ...

    Abstract Information about authentic specimens of
    Language English
    Publishing date 2017-11-07
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2553667-9
    ISSN 2150-1211 ; 2150-1203
    ISSN (online) 2150-1211
    ISSN 2150-1203
    DOI 10.1080/21501203.2017.1394392
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Paradigm shift in esophageal diverticulum treatment: is the peroral endoscopic myotomy (POEM) technique the best method?

    Sato, Hiroki

    Endoscopy

    2019  Volume 51, Issue 12, Page(s) 1117–1118

    Language English
    Publishing date 2019-11-27
    Publisher © Georg Thieme Verlag KG
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 80120-3
    ISSN 1438-8812 ; 0013-726X
    ISSN (online) 1438-8812
    ISSN 0013-726X
    DOI 10.1055/a-1012-1977
    Database Thieme publisher's database

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 669: Show issues Location:
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    Zs.MO 162: Show issues

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  9. Article: Evaluation of Skeletal Muscle Dysfunction Associated With Acute Inflammation by Electrical Impedance Myography: A Case Report on Skeletal Muscle Dysfunction After Cardiac Surgery and Literature Review.

    Sato, Hiroki / Nakamura, Takao

    Cureus

    2021  Volume 13, Issue 12, Page(s) e20166

    Abstract: Electrical impedance myography (EIM) is an evaluation technique for skeletal muscles that uses electrical impedance technology. Recent reviews have shown that EIM is useful as a method to assess changes in skeletal muscle quality and quantity with aging. ...

    Abstract Electrical impedance myography (EIM) is an evaluation technique for skeletal muscles that uses electrical impedance technology. Recent reviews have shown that EIM is useful as a method to assess changes in skeletal muscle quality and quantity with aging. These may be utilized for functional changes in inflammatory skeletal muscles, such as disease and operation. In this report, the impedance parameters using EIM present perioperative skeletal muscle changes in patients after cardiac surgery. In addition, we will describe the efficacy of EIM in skeletal muscle dysfunction due to inflammation or disease. This study aimed to elucidate the efficacy of EIM in acute inflammation-associated skeletal muscle dysfunction.
    Language English
    Publishing date 2021-12-04
    Publishing country United States
    Document type Case Reports
    ZDB-ID 2747273-5
    ISSN 2168-8184
    ISSN 2168-8184
    DOI 10.7759/cureus.20166
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: [Current Trends and Basic Research in the Treatment of Cerebral Aneurysms].

    Sato, Hiroki / Kurita, Hiroki

    Brain and nerve = Shinkei kenkyu no shinpo

    2021  Volume 73, Issue 9, Page(s) 1013–1018

    Abstract: Subarachnoid hemorrhage is a life-threatening complication of cerebral aneurysm rupture, which not only causes severe disability but is associated with a mortality rate of >40% within 30 days after the event. In this article, we discuss the basic ... ...

    Abstract Subarachnoid hemorrhage is a life-threatening complication of cerebral aneurysm rupture, which not only causes severe disability but is associated with a mortality rate of >40% within 30 days after the event. In this article, we discuss the basic knowledge and novel therapeutic approaches to cerebral aneurysms, including endovascular treatment and microsurgical clipping. Moreover, we discuss animal models used in basic research on cerebral aneurysms and the latest research that aims to establish optimal pharmacological treatment for cerebral aneurysms.
    MeSH term(s) Aneurysm, Ruptured ; Animals ; Embolization, Therapeutic ; Intracranial Aneurysm/therapy ; Retrospective Studies ; Subarachnoid Hemorrhage/therapy ; Treatment Outcome
    Language Japanese
    Publishing date 2021-06-23
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 390389-8
    ISSN 1344-8129 ; 1881-6096 ; 0006-8969
    ISSN (online) 1344-8129
    ISSN 1881-6096 ; 0006-8969
    DOI 10.11477/mf.1416201879
    Database MEDical Literature Analysis and Retrieval System OnLINE

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