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  1. Article ; Online: Esophagobronchial fistula successfully managed with a self-expandable metallic stent followed by fixation using a silicon Y stent.

    Ohtsuka, Takashi / Kato, Daiki / Tsukamoto, Yo / Shibazaki, Takamasa / Nakada, Takeo / Yabe, Mitsuo / Hirano, Jun

    Thoracic cancer

    2022  Volume 13, Issue 20, Page(s) 2908–2910

    Abstract: ... in the left main bronchus. Then, a silicone Y stent (16 × 13 × 13 mm in outer diameter) was inserted ... to support the SEMS from the inside. After placing the SEMS and Y stent, the position of the SEMS was ...

    Abstract Esophagobronchial fistula (EBF) formation is a severe complication of advanced thoracic malignancies, that affects the prognosis and quality of life of patients. This study reports the case of an 80-year-old man with advanced esophageal cancer, complicated by EBF formation in the left main bronchus proximal to the carina following chemoradiation therapy. A fully covered stent was placed in the left main bronchus but was dislocated on the oral side. The attempt to place a partially covered self-expandable metallic stent (SEMS) also failed due to stent dislocation on the oral side. To avoid stent dislocation, a partially covered SEMS with a length of 40 mm and a diameter of 16 mm was placed to cover the EBF in the left main bronchus. Then, a silicone Y stent (16 × 13 × 13 mm in outer diameter) was inserted to support the SEMS from the inside. After placing the SEMS and Y stent, the position of the SEMS was stabilized. The patient remained stable with adequate oral intake.
    MeSH term(s) Aged, 80 and over ; Bronchial Fistula/etiology ; Bronchial Fistula/surgery ; Esophageal Fistula/etiology ; Esophageal Fistula/surgery ; Humans ; Male ; Quality of Life ; Retrospective Studies ; Silicon ; Silicones ; Stents/adverse effects ; Treatment Outcome
    Chemical Substances Silicones ; Silicon (Z4152N8IUI)
    Language English
    Publishing date 2022-08-31
    Publishing country Singapore
    Document type Case Reports
    ZDB-ID 2625856-0
    ISSN 1759-7714 ; 1759-7706
    ISSN (online) 1759-7714
    ISSN 1759-7706
    DOI 10.1111/1759-7714.14625
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Polymorphisms of six Y-chromosome STRs in a Chinese population.

    Tie, Jian / Wang, Xiuling / Suzuki, Yuka / Tsukamoto, Shojiro / Oshida, Shigemi

    Legal medicine (Tokyo, Japan)

    2004  Volume 6, Issue 1, Page(s) 41–46

    Abstract: The polymorphic short tandem repeat (STR) loci of six Y-chromosome markers were investigated in 112 ... for the Y-specific STR loci DYS19, DYS385, DYS389II, DYS390, DYS391 and DYS393 were analyzed by the Y-PLEX 6 ... were observed in six Y-specific STR loci, the haplotype diversity was raised to 0.999. The results ...

    Abstract The polymorphic short tandem repeat (STR) loci of six Y-chromosome markers were investigated in 112 unrelated Chinese males using a multiplex polymerase chain reaction (PCR). Allele and haplotype frequencies for the Y-specific STR loci DYS19, DYS385, DYS389II, DYS390, DYS391 and DYS393 were analyzed by the Y-PLEX 6 Kit. The commonest allele for each locus was: DYS19, allele 15; DYS385, allele 12; DYS389II, allele 28; DYS390, allele 23; DYS391, 10; and DYS393, allele 12. Gene diversity value was calculated from the allelic frequency for each locus. The DYS385 locus proved to be highly polymorphic (0.890), DYS391 showed the lowest value (0.489), and the other loci showed values ranging from 0.646 to 0.897. A total of 99 haplotypes were observed in six Y-specific STR loci, the haplotype diversity was raised to 0.999. The results revealed that a set of six Y-specific STR loci were able to discriminate most of the male individuals in the Chinese population.
    MeSH term(s) Alleles ; Asian Continental Ancestry Group/genetics ; China ; Chromosomes, Human, Y/genetics ; Genetics, Population ; Haplotypes ; Humans ; Male ; Polymerase Chain Reaction ; Polymorphism, Genetic ; Tandem Repeat Sequences
    Language English
    Publishing date 2004-03
    Publishing country Ireland
    Document type Comparative Study ; Journal Article
    ZDB-ID 2019555-2
    ISSN 1344-6223
    ISSN 1344-6223
    DOI 10.1016/j.legalmed.2003.09.003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Electrical synapses for a pooling layer of the convolutional neural network in retinas.

    Tsukamoto, Yoshihiko

    Frontiers in cellular neuroscience

    2023  Volume 17, Page(s) 1281786

    Abstract: We have an example of a synergetic effect between neuroscience and connectome via artificial intelligence. The invention of Neocognitron, a machine learning algorithm, was inspired by the visual cortical circuitry for complex cells to be made by ... ...

    Abstract We have an example of a synergetic effect between neuroscience and connectome via artificial intelligence. The invention of Neocognitron, a machine learning algorithm, was inspired by the visual cortical circuitry for complex cells to be made by combinations of simple cells, which uses a hierarchical convolutional neural network (CNN). The CNN machine learning algorithm is powerful in classifying neuron borderlines on electron micrograph images for automatized connectomic analysis. CNN is also useful as a functional framework to analyze the neurocircuitry of the visual system. The visual system encodes visual patterns in the retina and decodes them in the corresponding cortical areas. The knowledge of evolutionarily chosen mechanisms in retinas may help the innovation of new algorithms. Since over a half-century ago, a classical style of serial section transmission electron microscopy has vastly contributed to cell biology. It is still useful to comprehensively analyze the small area of retinal neurocircuitry that is rich in natural intelligence of pattern recognition. I discuss the perspective of our study on the primary rod signal pathway in mouse and macaque retinas with special reference to electrical synapses. Photon detection under the scotopic condition needs absolute sensitivity but no intricate pattern recognition. This extreme case is regarded as the most simplified pattern recognition of the input with no autocorrelation. A comparative study of mouse and macaque retinas, where exists the 7-fold difference in linear size, may give us the underlying principle with quantitative verification of their adaptational designs of neurocircuitry.
    Language English
    Publishing date 2023-10-30
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2452963-1
    ISSN 1662-5102
    ISSN 1662-5102
    DOI 10.3389/fncel.2023.1281786
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Highly efficient methyl ketone synthesis with photoactivated acetone and olefins assisted by Mg(II)-exchanged zeolite Y.

    Tsukamoto, Daijiro / Shiraishi, Yasuhiro / Hirai, Takayuki

    The Journal of organic chemistry

    2010  Volume 75, Issue 5, Page(s) 1450–1457

    Abstract: ... that an addition of Mg(2+)-exchanged zeolite Y (MgY) to the above photoreaction system accelerates the methyl ...

    Abstract We previously found that photoirradiation of an acetone/water mixture containing olefins affords the corresponding methyl ketones highly efficiently and selectively via a water-assisted C-C coupling between the acetonyl radical and olefins (Org. Lett. 2008, 10, 3117-3120). The reaction proceeds at room temperature without any additives and has a potential to be a powerful method for methyl ketone synthesis. Here we report that an addition of Mg(2+)-exchanged zeolite Y (MgY) to the above photoreaction system accelerates the methyl ketone formation, while maintaining high selectivity. Ab initio molecular orbital calculation reveals that the accelerated methyl ketone formation is due to the electrostatic interaction between Mg(2+) and excited-state acetone. This leads to a charge polarization of the carbonyl moiety of excited-state acetone and accelerates the hydrogen abstraction from ground-state acetone (acetonyl radical formation). This promotes efficient addition of the acetonyl radical to olefins, resulting in methyl ketone formation enhancement. Adsorption experiments reveal that accumulation of olefins inside the zeolite pore also affects efficient radical addition to olefins. The present process successfully produces various methyl ketones with very high yield, and the MgY recovered can be reused for further reaction without loss of activity.
    MeSH term(s) Acetone/chemistry ; Alkenes/chemistry ; Catalysis ; Crystallography, X-Ray ; Ketones/chemical synthesis ; Magnesium/chemistry ; Magnetic Resonance Spectroscopy ; Models, Chemical ; Photochemistry ; Stereoisomerism ; Zeolites/chemistry
    Chemical Substances Alkenes ; Ketones ; Zeolites (1318-02-1) ; Acetone (1364PS73AF) ; Magnesium (I38ZP9992A)
    Language English
    Publishing date 2010-03-05
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/jo902321f
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Biliary reconstruction for infantile living donor liver transplantation: Roux-en-Y hepaticojejunostomy or duct-to-duct choledochocholedochostomy?

    Shirouzu, Yasumasa / Okajima, Hideaki / Ogata, Satsuki / Ohya, Yuki / Tsukamoto, Yukika / Yamamoto, Hidekazu / Takeichi, Takayuki / Kwang-Jong, Lee / Asonuma, Katsuhiro / Inomata, Yukihiro

    Liver transplantation : official publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society

    2008  Volume 14, Issue 12, Page(s) 1761–1765

    Abstract: ... The incidence of posttransplant biliary complications for DD was compared with that for Roux-en-Y ...

    Abstract Hepaticojejunostomy is a standard biliary reconstruction method for infantile living donor liver transplantation (LDLT), but choledochocholedochostomy for infants is not generally accepted yet. Ten pediatric recipients weighing no more than 10 kg underwent duct-to-duct choledochocholedochostomy (DD) for biliary reconstruction for LDLT. Patients were followed up for a median period of 26.8 months (range: 4.0-79.0 months). The incidence of posttransplant biliary complications for DD was compared with that for Roux-en-Y hepaticojejunostomy (RY). No DD patients and 1 RY patient (5%) developed biliary leakage (P > 0.05), and biliary stricture occurred in 1 DD patient (10%) and none of the RY patients (P > 0.05); none of the DD patients and 5 RY patients (25%) suffered from uncomplicated cholangitis after LDLT (P > 0.05), and 1 DD patient (10%) and 2 RY patients (10%) died of causes unrelated to biliary complications. In conclusion, both hepaticojejunostomy and choledochocholedochostomy resulted in satisfactory outcome in terms of biliary complications, including leakage and stricture, for recipients weighing no more than 10 kg.
    MeSH term(s) Anastomosis, Roux-en-Y/methods ; Body Weight ; Choledochostomy/methods ; Common Bile Duct/surgery ; Female ; Humans ; Infant ; Jejunostomy/methods ; Jejunum/surgery ; Liver/surgery ; Liver Transplantation/methods ; Living Donors ; Male
    Language English
    Publishing date 2008-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2006866-9
    ISSN 1527-6473 ; 1527-6465
    ISSN (online) 1527-6473
    ISSN 1527-6465
    DOI 10.1002/lt.21599
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Acetic acid activates hepatic AMPK and reduces hyperglycemia in diabetic KK-A(y) mice.

    Sakakibara, Shoji / Yamauchi, Toshimasa / Oshima, Yoshifumi / Tsukamoto, Yoshinori / Kadowaki, Takashi

    Biochemical and biophysical research communications

    2006  Volume 344, Issue 2, Page(s) 597–604

    Abstract: ... in type 2 diabetes, we fed either a standard diet or one containing 0.3% AcOH to KK-A(y) mice for 8 weeks ...

    Abstract Acetic acid (AcOH), which is a short-chain fatty acid, is reported to have some beneficial effects on metabolism. To test the hypothesis that feeding of AcOH exerts beneficial effects on glucose homeostasis in type 2 diabetes, we fed either a standard diet or one containing 0.3% AcOH to KK-A(y) mice for 8 weeks. Fasting plasma glucose and HbA1c levels were lower in mice fed AcOH for 8 weeks than in control mice. AcOH also reduced the expression of genes involved in gluconeogenesis and lipogenesis, which is in part regulated by 5'-AMP-activated protein kinase (AMPK) in the liver. Finally, sodium acetate, in the form of neutralized AcOH, directly activated AMPK and lowered the expression of genes such as for glucose-6-phosphatase and sterol regulatory element binding protein-1 in rat hepatocytes. These results indicate that the hypoglycemic effect of AcOH might be due to activation of AMPK in the liver.
    MeSH term(s) AMP-Activated Protein Kinases ; Acetic Acid/administration & dosage ; Animals ; Diabetes Mellitus, Type 2/complications ; Diabetes Mellitus, Type 2/drug therapy ; Diabetes Mellitus, Type 2/enzymology ; Disease Models, Animal ; Enzyme Activation/drug effects ; Hyperglycemia/drug therapy ; Hyperglycemia/enzymology ; Hyperglycemia/etiology ; Liver/drug effects ; Liver/enzymology ; Male ; Mice ; Multienzyme Complexes/drug effects ; Multienzyme Complexes/metabolism ; Protein-Serine-Threonine Kinases/drug effects ; Protein-Serine-Threonine Kinases/metabolism ; Treatment Outcome
    Chemical Substances Multienzyme Complexes ; Protein-Serine-Threonine Kinases (EC 2.7.11.1) ; AMP-Activated Protein Kinases (EC 2.7.11.31) ; Acetic Acid (Q40Q9N063P)
    Language English
    Publishing date 2006-06-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 205723-2
    ISSN 0006-291X ; 0006-291X
    ISSN (online) 0006-291X
    ISSN 0006-291X
    DOI 10.1016/j.bbrc.2006.03.176
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Functional evaluation of four patients treated with V-Y quadricepsplasty in total knee arthroplasty.

    Tsukamoto, Nobuaki / Miura, Hiromasa / Matsuda, Shuichi / Mawatari, Taro / Kato, Hiroshi / Iwamoto, Yukihide

    Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association

    2006  Volume 11, Issue 4, Page(s) 394–400

    MeSH term(s) Aged ; Arthroplasty, Replacement, Knee ; Female ; Gait ; Humans ; Knee Joint/physiopathology ; Middle Aged ; Muscle, Skeletal/surgery ; Range of Motion, Articular ; Recovery of Function ; Reoperation ; Treatment Outcome ; Walking
    Language English
    Publishing date 2006-07
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1314243-4
    ISSN 1436-2023 ; 0949-2658
    ISSN (online) 1436-2023
    ISSN 0949-2658
    DOI 10.1007/s00776-006-1023-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Improvement of Temperature Measurement Accuracy of Hot Airflow Using Ultrafine Thermo-Sensitive Fluorescent Wires of Lumisis Phosphor.

    Funatani, Shumpei / Tsukamoto, Yusaku

    Sensors (Basel, Switzerland)

    2024  Volume 24, Issue 8

    Abstract: In this study, the fluorescence properties of Lumisis, a phosphor that can be easily applied to ultrafine wires, were evaluated. By evaluating the wavelength characteristics of Lumisis phosphor, we investigated the possibility of applying it to a dual- ... ...

    Abstract In this study, the fluorescence properties of Lumisis, a phosphor that can be easily applied to ultrafine wires, were evaluated. By evaluating the wavelength characteristics of Lumisis phosphor, we investigated the possibility of applying it to a dual-wavelength laser-induced fluorescence (LIF) measurement system and evaluated the accuracy of temperature measurements. The difference between the decrease in the percentage intensities of the red and green fluorescence of Lumisis phosphors showed that two-color LIF was possible. The Lumisis phosphor-mixture ratio was optimized as 1:1.25, and the average measurement error of the fluorescent wire was 0.20 K, as evaluated through uncertainty analysis. Finally, the application of this measurement method to hot air jet phenomena showed that this method accurately captures the temperature changes in hot air, thus proving its validity.
    Language English
    Publishing date 2024-04-14
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s24082510
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: A self-inactivating invertebrate opsin optically drives biased signaling toward Gβγ-dependent ion channel modulation.

    Tsukamoto, Hisao / Kubo, Yoshihiro

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

    2023  Volume 120, Issue 21, Page(s) e2301269120

    Abstract: Animal opsins, light-sensitive G protein-coupled receptors, have been used for optogenetic tools to control G protein-dependent signaling pathways. Upon G protein activation, the Gα and Gβγ subunits drive different intracellular signaling pathways, ... ...

    Abstract Animal opsins, light-sensitive G protein-coupled receptors, have been used for optogenetic tools to control G protein-dependent signaling pathways. Upon G protein activation, the Gα and Gβγ subunits drive different intracellular signaling pathways, leading to complex cellular responses. For some purposes, Gα- and Gβγ-dependent signaling needs to be separately modulated, but these responses are simultaneously evoked due to the 1:1 stoichiometry of Gα and Gβγ Nevertheless, we show temporal activation of G protein using a self-inactivating invertebrate opsin,
    MeSH term(s) Animals ; Opsins/genetics ; Opsins/metabolism ; GTP-Binding Protein beta Subunits/genetics ; GTP-Binding Protein beta Subunits/metabolism ; Rod Opsins/metabolism ; GTP-Binding Proteins/genetics ; GTP-Binding Proteins/metabolism ; Ion Channels ; Invertebrates ; GTP-Binding Protein gamma Subunits/genetics ; GTP-Binding Protein gamma Subunits/metabolism
    Chemical Substances Opsins ; GTP-Binding Protein beta Subunits ; Rod Opsins ; GTP-Binding Proteins (EC 3.6.1.-) ; Ion Channels ; GTP-Binding Protein gamma Subunits
    Language English
    Publishing date 2023-05-15
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 209104-5
    ISSN 1091-6490 ; 0027-8424
    ISSN (online) 1091-6490
    ISSN 0027-8424
    DOI 10.1073/pnas.2301269120
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Imaging of pituitary tumors: an update with the 5th WHO Classifications-part 2. Neoplasms other than PitNET and tumor-mimicking lesions.

    Tsukamoto, Taro / Miki, Yukio

    Japanese journal of radiology

    2023  Volume 41, Issue 8, Page(s) 808–829

    Abstract: Many types of tumors can develop in the pituitary gland. In the recently revised 5th editions of the World Health Organization (WHO) classifications (2021 WHO Classification of Central Nervous System Tumors and the 2022 WHO Classification of Endocrine ... ...

    Abstract Many types of tumors can develop in the pituitary gland. In the recently revised 5th editions of the World Health Organization (WHO) classifications (2021 WHO Classification of Central Nervous System Tumors and the 2022 WHO Classification of Endocrine and Neuroendocrine Tumors), various changes have been made to the tumors other than pituitary neuroendocrine tumor (PitNET)/pituitary adenoma, as well as PitNET. Adamantinomatous craniopharyngioma and papillary craniopharyngioma are now considered separate tumors in the 5th edition of the WHO classification. Tumors positive for thyroid transcription factor 1, a marker of posterior pituitary cells, are now grouped together in the pituicyte tumor family in the 5th edition of the WHO classification of Endocrine and Neuroendocrine Tumors. Poorly differentiated chordoma is newly listed in the 5th edition of the WHO Classification of Endocrine and Neuroendocrine Tumors. In this paper, we present the latest WHO classification of pituitary tumors (adamantinomatous craniopharyngioma, papillary craniopharyngioma, pituitary blastoma, pituicyte tumor family, tumors of pituitary origin other than those of the pituicyte tumor family, germinoma, meningioma, chordoma, metastatic tumors, lymphoma, and pituitary incidentaloma), review diseases requiring differentiation from tumors (pituitary abscess, hypophysitis, pituitary hyperplasia, Rathke's cleft cyst, arachnoid cyst, and aneurysm), and discuss diagnoses based on imaging findings.
    MeSH term(s) Humans ; Pituitary Neoplasms/pathology ; Craniopharyngioma/pathology ; Chordoma/pathology ; Pituitary Gland ; Pituitary Diseases ; Adenoma/pathology ; Neuroendocrine Tumors/pathology ; Meningeal Neoplasms/pathology ; World Health Organization
    Language English
    Publishing date 2023-03-13
    Publishing country Japan
    Document type Journal Article ; Review
    ZDB-ID 2488907-6
    ISSN 1867-108X ; 1867-1071
    ISSN (online) 1867-108X
    ISSN 1867-1071
    DOI 10.1007/s11604-023-01407-0
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