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Co-occurrence of Malignant Melanoma and Squamous Cell Carcinoma on Burn Scars: A Case Report. Cureus 2023; 15:e44283. [PMID: 37779745 PMCID: PMC10535788 DOI: 10.7759/cureus.44283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2023] [Indexed: 10/03/2023] Open
Abstract
Tumors arising from burn scars are not rare but sometimes cause the rare co-existence of different tumors. However, detailed information on this topic remains largely unknown. We present a case of the co-occurrence of malignant melanoma and squamous cell carcinoma in a patient with a history of burn scars. A 73-year-old man presented with an erythematous plaque on his left lower leg that gradually turned into a tumor with ulceration. He also presented with scaly tumors at other sites within the same burn scar lesion. He had a history of burns on the left leg at the age of 20 years. After surgical resection of the tumors, histological analysis revealed that the posterior aspect of the largest tumor was malignant melanoma, and the remaining two tumors were squamous cell carcinomas, indicating the co-existence of different types of malignant skin cancers. Based on a literature review of previously published case reports, this is the first report to highlight the importance of complete skin grafts in reducing this risk.
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Health guidance for prevention of lifestyle-related diseases using health-related mobile applications. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Issue
Lifestyle modifications are essential for the prevention of lifestyle-related diseases such as hypertension, hyperlipidaemia, and type 2 diabetes. Healthcare providers in Japan are required to use information and communications technologies (ICT), such as health-related mobile applications (mHealth apps), in health guidance.
Description of the Problem
To understand the results of and issues in health guidance, two searches were conducted to identify the domains of health guidance provided using ICT. We searched the PubMed and Japan Medical Abstracts Society databases to identify articles published from 2000-2018. The first search identified frameworks of health guidance provided using ICT. The second search identified primary studies about using mHealth apps published between 2000 and 2018. The sample comprised 22 unique programs from 38 primary studies. The following research questions were explored: 1) What is the purpose of using the mHealth app?
2) Is there a significant difference in the effect of using the mHealth app instead of face-to-face communication?
Results
The mHealth app was used to enhance convenience and to improve or modify lifestyle. The latter included self-monitoring, typing health information, providing knowledge, sharing information, providing encouragement and praise, and correction of action plans. Some positive effects were observed, including compensating for insufficient information, enhancing self-management, and improving degrees of satisfaction of users. Only two programs did not report a significant difference in the effect of using the mHealth app as compared to face-to-face communication.
Lessons
This review showed that the frequency of typing information about diet and exercise appeared to be related to the prevention of primary lifestyle-related diseases and the improvement of self-management behaviour.
Key messages
Use of the mHealth app for providing health guidance might enhance continuous support for self-monitoring and self-management behaviour. Use the mHealth app for providing encouragement and praise might promote a smooth conversation, which in turn would facilitate appropriate self-management behaviour.
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Subepidermal blistering disease acquired autoantibody against laminin 332 during treatment for bullous pemphigoid. J Dermatol 2020; 47:e257-e258. [PMID: 32350897 DOI: 10.1111/1346-8138.15365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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Real-time audio detection and regeneration of moving sound source based on optical flow algorithm of laser speckle images. OPTICS EXPRESS 2020; 28:4475-4488. [PMID: 32121683 DOI: 10.1364/oe.383442] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 01/21/2020] [Indexed: 06/10/2023]
Abstract
Sound detection with optical means is an appealing research topic. In this manuscript, we proposed a laser microphone system allowing simultaneous detection and regeneration of the audio signal by observing the movement of secondary speckle patterns. In the proposed system, optical flow method, along with some denoising algorithms are employed to obtain the motion information of the speckle sequence with high speed. Owing to this, audio signal can be regenerated in real time with simple optical setup even the sound source is moving. Experiments have been conducted and the results show that the proposed system can restore high quality audio signal in real time under various conditions.
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5
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6
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A high expression of cell adhesion molecule 1 (CADM1) is an unfavorable prognostic factor in mycosis fungoides. Clin Immunol 2018; 193:121-122. [DOI: 10.1016/j.clim.2018.01.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 01/09/2018] [Accepted: 01/17/2018] [Indexed: 11/24/2022]
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7
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Maresin-1 suppresses imiquimod-induced skin inflammation by regulating IL-23 receptor expression. Sci Rep 2018; 8:5522. [PMID: 29615641 PMCID: PMC5882824 DOI: 10.1038/s41598-018-23623-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 03/15/2018] [Indexed: 01/17/2023] Open
Abstract
The anti-inflammatory effect of omega 3 polyunsaturated fatty acids has been confirmed in various inflammatory disease models. Maresin-1 (MaR1) is a lipid mediator derived from the omega-3 fatty acid docosahexaenoic acid (DHA) that has displayed strong anti-inflammatory effects in various inflammatory disease models. However, the effect of topical MaR1 on cutaneous inflammation remains unclear. Therefore, we initially examined the anti-inflammatory effects of topical Maresin-1 using an imiquimod (IMQ)-induced psoriasis-like mouse model of inflammation. Topical MaR1 reduced the ear swelling response as seen in histological findings. RT-PCR and flow cytometry analyses revealed MaR1 had no inhibitory effect on IL-23, but MaR1 suppressed IL-17A production by γδTCRmid+ and CD4+ cells in the skin. These inhibitory effects were also observed in a subcutaneous IL-23-injected psoriasis model. MaR1 downmodulated IL-23 receptor (IL-23R) expression by suppressing retinoic acid-related orphan receptor γt (RORγt) expression and internalization in a clathrin-dependent manner in γδTCRmid+ and CD4+ cells. These results lead to assumptions that topical MaR1 may be a new therapeutic agent for psoriasis and other IL-17-mediated cutaneous inflammatory diseases.
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8
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Drug eruption caused by memantine. Ann Allergy Asthma Immunol 2017; 119:89-90. [PMID: 28668245 DOI: 10.1016/j.anai.2017.05.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 05/02/2017] [Accepted: 05/06/2017] [Indexed: 12/01/2022]
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9
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A novel base pair deletion in the TRPS1 gene in a Japanese patient with trichorhinophalangeal syndrome. Eur J Dermatol 2017:ejd.2017.3172. [PMID: 29180318 DOI: 10.1684/ejd.2017.3172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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10
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422 Galectin-7 suppresses the erythema and cytokine productions in Nc/Nga mice, an atopic dermatitis model. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Bullous Pemphigoid Associated with the Dipeptidyl Peptidase-4 Inhibitor Sitagliptin in a Patient with Liver Cirrhosis Complicated with Rapidly Progressive Hepatocellular Carcinoma. Intern Med 2017; 56:2471-2474. [PMID: 28824076 PMCID: PMC5643176 DOI: 10.2169/internalmedicine.8703-16] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A 78-year-old man presented with cutaneous blisters of the limbs and abdominal distension. He had been treated for various diseases, including liver cirrhosis. He had begun receiving sitagliptin, a dipeptidyl peptidase-4 (DPP-4) inhibitor, for diabetes mellitus three years before the hospitalization. A skin biopsy demonstrated bullous pemphigoid. Ultrasonography (US) revealed multiple liver tumors, although he had been receiving regular US studies. We stopped sitagliptin and started insulin and corticosteroids. However, his renal dysfunction progressed, and he died 14 days after the hospitalization. We should therefore be careful of various complications, including bullous pemphigoid and progression of tumors, when using DPP-4 inhibitors.
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12
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Stevens-Johnson Syndrome After Influenza Vaccine Injection. J Investig Allergol Clin Immunol 2017; 27:274-275. [PMID: 28731419 DOI: 10.18176/jiaci.0169] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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13
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Eosinophilic Cellulitis Possibly Due to Mosquito Bite With High IL-5 Production. J Investig Allergol Clin Immunol 2017; 27:149-150. [PMID: 28398209 DOI: 10.18176/jiaci.0142] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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14
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Psoriatic Erythroderma Caused by Terbinafine: A Possible Pathogenetic Role for IL-23. J Investig Allergol Clin Immunol 2017; 27:63-64. [PMID: 28211348 DOI: 10.18176/jiaci.0116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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15
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16
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Hypopituitarism and hypothyroidism following atrioventricular block during nivolumab treatment. J Dermatol 2017; 44:e144-e145. [PMID: 28295551 DOI: 10.1111/1346-8138.13797] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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18
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Calciphylaxis following acute renal injury: a case and literature review. SPRINGERPLUS 2016; 5:1043. [PMID: 27462491 PMCID: PMC4940327 DOI: 10.1186/s40064-016-2740-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 07/01/2016] [Indexed: 12/04/2022]
Abstract
Background Calciphylaxis following acute renal failure is rare. Findings We report A 57-year-old male with an acute renal failure associated with necrotizing fasciitis. We also review the cases of calciphylaxis due to acute renal disorder further. Conclusions It should be kept in mind that calciphylaxis is observed in patient with not only chronic renal disease but also acute renal failure.
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19
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20
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Annular erythematous eruption with a high response to mosquito bite. J Dermatol 2016; 43:1378-1380. [PMID: 27027741 DOI: 10.1111/1346-8138.13393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Induction of S100 calcium-binding protein A2 expression in keratinocytes by telaprevir and trichloroethylene. J Dermatol Sci 2016. [DOI: 10.1016/j.jdermsci.2016.08.354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Expression of activation induced deaminase (AID) and BRAF V600E mutation in malignant melanoma. J Dermatol Sci 2016. [DOI: 10.1016/j.jdermsci.2016.08.248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Anaphylactoid purpura triggered by cellulitis as a favorable prognosis: case report and literature review. SPRINGERPLUS 2016; 5:1112. [PMID: 27478729 PMCID: PMC4949179 DOI: 10.1186/s40064-016-2792-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Accepted: 07/07/2016] [Indexed: 11/26/2022]
Abstract
Background An anaphylactoid purpura affects small capillaries in the skin and other organs. Although two cases of anaphylactoid purpura exacerbated by cellulitis have been reported in Japanese literatures, its prognosis remains still unclear. Because cellulitis exacerbates various cutaneous inflammations, it has been speculated that cellulitis might also exacerbate cutaneous inflammation, such as vasculitis.
Findings In this article, we report that 78-year-old woman exhibited anaphylactoid purpura, following cellulitis. We also reviewed the literature concerning about this subject. Conclusions This type of anaphylactoid purpura is thought to have a favorable prognosis dependent on the treatment for cellulitis.
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24
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A possible pathogenetic role of IL-23/IL-17 axis in rheumatoid nodules in patients with rheumatoid arthritis. Clin Immunol 2016; 170:20-1. [PMID: 27388654 DOI: 10.1016/j.clim.2016.07.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 07/03/2016] [Indexed: 11/30/2022]
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25
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Maculopapular type drug eruption caused by pregabalin: A case and literature review. Allergol Int 2016; 65:351-2. [PMID: 26976337 DOI: 10.1016/j.alit.2016.02.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 02/08/2016] [Accepted: 02/14/2016] [Indexed: 11/26/2022] Open
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26
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27
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CD30-positive Cutaneous Pseudolymphoma Caused by Tocilizumab in a Patient with Rheumatoid Arthritis: Case Report and Literature Review. Acta Derm Venereol 2016; 96:570-1. [PMID: 26631390 DOI: 10.2340/00015555-2309] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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28
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Multiple fixed drug eruption caused by ropinirole in a patient with Parkinson's disease. Allergol Int 2016; 65:221-222. [PMID: 26790807 DOI: 10.1016/j.alit.2015.12.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 12/02/2015] [Accepted: 12/03/2015] [Indexed: 11/30/2022] Open
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29
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30
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Maculopapular type drug eruption caused by silodosin. Allergol Int 2016; 65:219-220. [PMID: 26806055 DOI: 10.1016/j.alit.2015.11.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 11/26/2015] [Accepted: 11/29/2015] [Indexed: 11/16/2022] Open
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31
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Increased circulating Th17 cell in a patient with tinea capitis caused by Microsporum canis. Allergol Int 2016; 65:215-216. [PMID: 26666478 DOI: 10.1016/j.alit.2015.10.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 10/20/2015] [Accepted: 10/25/2015] [Indexed: 11/15/2022] Open
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32
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Acute Generalized Exanthematous Pustulosis Caused by Faropenem: A Possible Pathogenetic Role for Interleukin-23. Acta Derm Venereol 2016; 96:265-6. [PMID: 26302837 DOI: 10.2340/00015555-2225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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33
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Acute edema/cutaneous distension syndrome representing as eczéma craquelé-like change: A case and published work review. J Dermatol 2016; 43:709-10. [PMID: 26775716 DOI: 10.1111/1346-8138.13267] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Ripple Effect on Young People under Adolescent Peer Education. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv096.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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35
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Ripple Effect on the Parent Generation under Adolescent Peer Education. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv096.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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36
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Abstract
Nivolumab was developed as a monoclonal antibody against programmed death receptor-1, an immune checkpoint inhibitor which negatively regulates T-cell proliferation and activation. Intravenous administration of nivolumab was approved for the treatment of unresectable malignant melanoma in 2014 in Japan. When advanced melanoma patients were treated with nivolumab, median overall survival became longer. Overall survival rate was significantly better in nivolumab-treated melanoma patients than dacarbazine-treated melanoma patients. Nivolumab had an acceptable long-term tolerability profile, with 22% of patients experiencing grade 3 or 4 adverse events related to the drug. Therefore, nivolumab can become an alternative therapy for advanced malignant melanoma.
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Abstract
Human body odour and earwax type are genetically dependent on a single-nucleotide polymorphism (SNP) located in the ABCC11 gene. So far, it still remains to be clear how SNP in the ABCC11 gene is associated with human malodour. In a recent issue of Experimental Dermatology, Baumann et al. propose one of the underlying molecular pathways. Although one of the amino acid conjugated of the odorants, Cys-Gly-3-methyl-3-sulfanylhexanol (3M3SH), was not taken up by the transporter ABCC11, glutathione conjugate of 3MSH (SG-3MSH) was transported by ABCC11. Moreover, SG-3MSH was processed to 3M3SH by γ-glutamyl-transferase 1 (GGT1), which was abundantly expressed in apocrine sweat glands. These findings may pave a way for the pharmacogenetics of human body odour and the development of innovative deodorant products.
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38
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Is Wnt5a overexpression sufficient for generating a psoriasis-like phenotype in transgenic mice? Exp Dermatol 2014; 24:183-4. [PMID: 25496533 DOI: 10.1111/exd.12617] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/01/2014] [Indexed: 11/28/2022]
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39
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40
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Connexin 26 (GJB2) mutations in keratitis-ichthyosis-deafness syndrome presenting with squamous cell carcinoma. J Dermatol 2011; 39:814-5. [PMID: 22098592 DOI: 10.1111/j.1346-8138.2011.01414.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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41
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P2-481 Achievements of the activities to create healthy lifestyles by healthcare professionals and adolescent peer leaders (Part 1). Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976m.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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42
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43
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Chondrodermatitis of the auricle in patients with atopic dermatitis. Eur J Dermatol 2010; 20:813-814. [PMID: 20937584 DOI: 10.1684/ejd.2010.1063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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44
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Spinal cord compression presumably due to metastasized cutaneous squamous cell carcinoma to the thoracic spine. J UOEH 2010; 32:155-159. [PMID: 20549904 DOI: 10.7888/juoeh.32.155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Cutaneous squamous cell carcinoma (SCC) frequently metastasizes to lymph nodes, but metastasis to the spine is rare. We report a case of cutaneous SCC with metastasis to a particularly rare region, the thoracic spine, which evolved into a spinal cord compression. In November 2005, a 73-year-old man underwent a resection of a primary tumor and standard inguinal lymphadenectomy for a cutaneous SCC of the right fourth toe, defined as T2N1M1 stage. Over the next 3 years, he was given peplomycin, CAV (cisplatin, adriamycin, and vindesine) therapy and radiotherapy for multiple lymph node metastases. In September 2008, he complained of back pain and urinary retention. Magnetic resonance imaging of the thoracic spine showed the presence of masses in the vertebral body, which compressed the spinal cord. Blood examination revealed an elevated level of serum SCC antigen. After irradiation and chemotherapy, the patient's complaint was relieved and the level of serum SCC antigen concomitantly declined. Spinal metastasis is one of the items to be kept in mind during the follow-up of patients with cutaneous SCC.
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Development of a prominent granulomatous eruption after interferon-gamma therapy in a patient with mycosis fungoides. Acta Derm Venereol 2010; 90:190-1. [PMID: 20169308 DOI: 10.2340/00015555-0788] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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46
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Hashimoto S, Narita S, Kasahara H, Shirai K, Kobayashi T, Takanishi A, Sugano S, Yamaguchi J, Sawada H, Takanobu H, Shibuya K, Morita T, Kurata T, Onoe N, Ouchi K, Noguchi T, Niwa Y, Nagayama S, Tabayashi H, Matsui I, Obata M, Matsuzaki H, Murasugi A, Kobayashi T, Haruyama S, Okada T, Hidaki Y, Taguchi Y, Hoashi K, Morikawa E, Iwano Y, Araki D, Suzuki J, Yokoyama M, Dawa I, Nishino D, Inoue S, Hirano T, Soga E, Gen S, Yanada T, Kato K, Sakamoto S, Ishii Y, Matsuo S, Yamamoto Y, Sato K, Hagiwara T, Ueda T, Honda N, Hashimoto K, Hanamoto T, Kayaba S, Kojima T, Iwata H, Kubodera H, Matsuki R, Nakajima T, Nitto K, Yamamoto D, Kamizaki Y, Nagaike S, Kunitake Y, Morita S. Auton Robots 2002; 12:25-38. [DOI: 10.1023/a:1013202723953] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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47
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Assembly and disassembly of the peripheral architecture of the plant cell nucleus during mitosis. PLANTA 1999; 210:165-7. [PMID: 10592045 DOI: 10.1007/s004250050666] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The architecture of the nuclei of higher plants includes a structure similar to the nuclear lamina of vertebrates. Changes in this structure were monitored during mitosis in carrot (Daucus carota L.) and celery (Apium graveolens L.) cells by immunofluorescence microscopy using an antibody that recognized the nuclear-matrix protein NMCP1. This protein has been shown to be localized exclusively at the periphery of the nucleus (K. Masuda et al. 1997, Exp Cell Res 232: 173-187). Immunofluorescence was recognized throughout cells in mitotic metaphase, although it was distributed predominantly in the mitotic spindle zone. At late anaphase or telophase, the immunofluorescence was localized around each set of daughter chromosomes. Immunofluorescence in newly formed daughter nuclei was restricted to the periphery of nuclei. This behavior was very similar to that of the nuclear lamina of vertebrates, suggesting that the structure located between the nuclear envelope and the chromosomes in plants disassembles and assembles in parallel with the disintegration and re-formation of the nuclear envelope.
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Local continuity of myocardial blood flow studied by monochromatic synchrotron radiation-excited x-ray fluorescence spectrometry. Circ Res 1995; 76:1088-100. [PMID: 7758163 DOI: 10.1161/01.res.76.6.1088] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We have developed a monochromatic synchrotron radiation-excited system for two-dimensional mapping of x-ray fluorescence evoked from heavy element-loaded microspheres, which can evaluate myocardial blood flow in small contiguous regions with a small methodological error: 10.8 +/- 2.4% of the average of difference of the dual flow for 7- to 10-mg myocardial tissue (4 dogs). The fractal D value obtained from the slope of the log relative dispersion-log mass plot was 1.21 +/- 0.08 for a voxel size of 7 to 1260 mg (5 dogs) and that for a voxel size of 2.5 to 40 mg (1.12 +/- 0.06) was smaller than that for a voxel size of 40 to 1280 mg (1.25 +/- 0.14, P < .05, ANOVA, 4 dogs). The distance-correlation coefficient relation for paired myocardial regions was attenuated (correlation analysis), and the correlation coefficients between the original grouping and the two aggregates of the adjacent regions were dissociated (extended correlation analysis) under reduction of coronary perfusion pressure (6 dogs). Suppression of myocardial contraction with lidocaine (3 dogs) and vasodilation with adenosine partly improved the distance-correlation coefficient relation under reduced coronary perfusion pressure. Thus, an x-ray fluorescence system designed for precise flow measurement shows that the fractal nature of local flow distribution can be extended into regions smaller than previously reported, that in these regions the flow becomes more homogeneous, and that the self similarity and continuity of local flow are attenuated by the reduction of coronary perfusion pressure and improved by contractile suppression and coronary vasodilation.
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Electrical analogy of diastolic pressure difference between left atrium and ventricle. Med Biol Eng Comput 1994; 32:S91-8. [PMID: 7967847 DOI: 10.1007/bf02523334] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We proposed a mathematical model to describe the early filling process of the left ventricle and applied the model to in vivo experiments. The solution of a second-order differential equation indicated that the pressure difference between the left atrium and ventricle during ventricular filling (PD) could be explained by a transient response, i.e. decremental oscillation, in an LCR circuit. Thereafter, we analysed the sequence of PD during vagal stimulation with two catheter-tip manometers in 12 anaesthetised dogs and evaluated changes in the parameters of the system under various haemodynamic conditions. The values of omega n and zeta were quite stable among beats within an episode of vagal stimulation, between episodes and even among dogs, despite the changes in haemodynamic variables. Pericardiotomy and partial discommunication of the mitral valve with the left ventricular free wall by cutting the mitral chordal tendons decreased omega n and increased zeta, mainly because of the increase in CLV. Occlusion of the coronary vascular beds with large numbers of microspheres increased omega n and decreased zeta, mainly because of the decrease in CLV. Mitral obstruction with an inflated balloon (increase in R) abolished the oscillatory changes and produced an exponential decay sequence of PD. In conclusion, both the logical and experimental approaches indicated that the sequence of PD could be considered as decremental oscillation in the LCR circuit and the parameters omega n and zeta could be good indices of the diastolic property of the left ventricle.
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Kinetics of oxygen reduction on fully and partially immersed Pt, Pd and Au electrodes in an NaCl + KCl eutectic melt. J Electroanal Chem (Lausanne) 1993. [DOI: 10.1016/0022-0728(93)80379-v] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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