- 著者
- Yuko Kaneko Masaru Kojima Yoshimasa Nakazato Nobuhide Masawa
- 出版者
- The Japanese Society for Lymphoreticular Tissue Research
- 雑誌
- Journal of Clinical and Experimental Hematopathology (ISSN:13464280)
- 巻号頁・発行日
- vol.52, no.3, pp.179-184, 2012 (Released:2012-12-22)
- 参考文献数
- 16
- 被引用文献数
- 1 1
The tonsils are uncommonly affected by granulomatous inflammation. This study attempted to clarify the clinicopathological and immunohistochemical findings and presence or absence of Epstein-Barr virus (EBV) in tonsilar granulomatous inflammation. A total of 537 consecutive specimens from tonsillectomies performed at Dokkyo University School of Medicine between 1999 and March 2012 were reexamined. Using formalin-fixed, paraffin-embedded sections, histological, immunohistochemical, and in situ hybridization (ISH) studies were performed. Epithelioid granulomas (EPGs) were identified in the tonsils in 16 (3.0%) cases. There were 8 males and 8 females, aged 4 to 57 years (mean, 23). In 11 patients, EPGs were located in the germinal center (GC), whereas they were located in the interfollicular area as well as GC in the remaining 5 cases. Three types of EPG have been delineated : (i) poorly demarcated small epithelioid cell granulomas (n = 6) ; (ii) well-demarcated non-caseating sarcoid-like granulomas (n = 5) ; and (iii) EPGs within GC showing suppurations at the center (n = 5). An ISH study demonstrated EBV-encoded small RNA (EBER)+ cells in 4 lesions. The present study demonstrated that the majority of EPGs were located in the GC and tonsilar EPGs showed histological variation. [J Clin Exp Hematopathol 52(3) : 179-184, 2012]
- 著者
- Shinya Hieda Yuko Kaneko Masato Nakagawa Naohiko Noma
- 出版者
- The Japanese Society for Plant Systematics
- 雑誌
- Acta Phytotaxonomica et Geobotanica (ISSN:13467565)
- 巻号頁・発行日
- vol.71, no.1, pp.65-71, 2020-02-29 (Released:2020-03-17)
Ludwigia grandiflora (Michx.) Greuter & Burdet is an invasive aquatic plant native to an area ranging from the southeastern United States to South America. In previous reports, L. grandiflora in Lake Biwa has been identified as L. grandiflora subsp. grandiflora, a hexaploid subspecies (2n = 48) or L. grandiflora sensu lato. Species of Ludwigia sect. Jussiaea, are morphologically very similar. Morphological characters, especially floral characters and cytology (chromosome number) have been used to identify species and subspecies. In our study, the morphological characteristics of L. grandiflora in Lake Biwa substantially corresponded to those of L. grandiflora subsp. hexapetala (Hook. & Arn.) G. L. Nesom & Kartesz, a decaploid (2n = 80) subspecies. The chromosome number of L. grandiflora in Lake Biwa was 2n = ca. 80, the same as in L. grandiflora subsp. hexapetala (2n = 80). Importantly, L. grandiflora in Lake Biwa is not L. grandiflora subsp. grandiflora, but rather L. grandiflora subsp. hexapetala. This re-identification has implications for management in Lake Biwa, since the life history of L. grandiflora subsp. hexapetala has been studied in Europe.