315 results on '"Kazutaka Yamada"'
Search Results
2. A new remarkable cimicoid genus and species (Hemiptera, Heteroptera, Cimicomorpha) from mid-Cretaceous Burmese amber, with implications for its aberrant male genitalia
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Kazutaka Yamada, Shûhei Yamamoto, and Yui Takahashi
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male genital morphology ,traumatic insemination ,Vetanthocoridae ,Myanmar ,Cenomanian ,Cimicoidea - Abstract
A new genus and species of cimicoid true bug, Ecpaglocoris ditomeus Yamada & Yamamoto, gen. et sp. nov., is described and illustrated from mid-Cretaceous (Cenomanian–Albian) amber in the Kachin State of northern Myanmar (Burma). This new fossil genus and species is reminiscent of members of Anthocoridae by the strongly flattened and elongated body, four-segmented labium, distinct costal fracture and presence of fossula spongiosa on fore tibiae, but should not be ascribed to this family. The new taxon cannot be placed in any extant cimicoid families, based upon hemelytral, male genital and other morphological structures. Based on the hemelytral membrane venation and presence of dorsal laterotergites on abdominal segments I to VIII, it can be assumed that this new genus belongs to the extinct family Vetanthocoridae. Ecpaglocoris ditomeusgen. et sp. nov. has aberrant male genitalia characterised by sickle-shaped left and right parameres and grooves running throughout the paramere. This characteristic indicates that traumatic insemination occurred in this genus. The peculiar combination of male genital characteristics seen in Ecpaglocorisgen. nov. prevents its placement in any of the extant cimicoid families.
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- 2023
3. 直腸脱に対する経腹的直腸吊り上げ固定術の治療成績
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Yasushi Nakamura, Yoriyuki Tsuji, Shota Takano, Yasue Irei, Hirotaka Hamada, Daisaku Kuwahara, Kohei Tamaoka, Saburo Hisano, Mitsuko Fukunaga, Masafumi Tanaka, Yasumitsu Saiki, Kazutaka Yamada, and Masahiro Takano
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Gastroenterology ,Surgery - Published
- 2023
4. Role of autopsy imaging in veterinary forensic medicine: experiences in 39 cases
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Kazutaka YAMADA, Kanako SATOH, Eiichi KANAI, and Hiroo MADARAME
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General Veterinary - Published
- 2023
5. New Genera and Species of Oriental Orthotyline Plant Bugs (Heteroptera: Miridae: Orthotylinae: Orthotylini)
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Tomohide YASUNAGA, Ram Keshari DUWAL, and Kazutaka YAMADA
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- 2022
6. Identification of the Minimum Combination of Serum microRNAs to Predict the Recurrence of Colorectal Cancer Cases
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Yukihiro, Yoshikawa, Mitsuko, Fukunaga, Junichi, Takahashi, Dai, Shimizu, Takaaki, Masuda, Tsunekazu, Mizushima, Kazutaka, Yamada, Masaki, Mori, Hidetoshi, Eguchi, Yuichiro, Doki, Takahiro, Ochiya, and Koshi, Mimori
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MicroRNAs ,Oncology ,Humans ,Reproducibility of Results ,Surgery ,Colorectal Neoplasms - Abstract
Background Serum microRNAs (miRNAs) have been recognized as potential stable biomarkers for various types of cancer. Considering the clinical applications, there are certain critical requirements, such as minimizing the number of miRNAs, reproducibility in a longitudinal clinical course, and superiority to conventional tumor markers, such as carcinoembryonic antigen (CEA) and carbohydrate antigen 19-9. This study aimed to identify serum miRNAs that indicate the recurrence of colorectal cancer (CRC), surpassing inter-tumor heterogeneity. Methods We conducted an analysis of 434 serum samples from 91 patients with CRC and 71 healthy subjects. miRNAs were obtained from Toray Co., Ltd, and miRNA profiles were analyzed using a three-step approach. miRNAs that were highly expressed in patients with CRC than in the healthy controls in the screening phase, and those that were highly expressed in the preoperative samples than in the 1-month postoperative samples in the discovery phase, were extracted. In the validation phase, the extracted miRNAs were evaluated in 323 perioperative samples, in chronological order. Results A total of 12 miRNAs (miR-25-3p, miR-451a, miR-1246, miR-1268b, miR-2392, miR-4480, miR-4648, miR-4732-5p, miR-4736, miR-6131, miR-6776-5p, and miR-6851-5p) were significantly concordant with the clinical findings of tumor recurrence, however their ability to function as biomarkers was comparable with CEA. In contrast, the combination of miR-1246, miR-1268b, and miR-4648 demonstrated a higher area under the curve (AUC) than CEA. These three miRNAs were upregulated in primary CRC tissues. Conclusion We identified ideal combinatorial miRNAs to predict CRC recurrence.
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- 2022
7. New genera and new species of remarkably large-sized or uniquely-shaped mirine plant bugs from Taiwan (Heteroptera: Miridae: Mirinae)
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TOMOHIDE YASUNAGA, KAZUTAKA YAMADA, and JING-FU TSAI
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Hemiptera ,Insecta ,Arthropoda ,Animalia ,Animal Science and Zoology ,Biodiversity ,Miridae ,Ecology, Evolution, Behavior and Systematics ,Taxonomy - Abstract
New taxa are proposed and described for several large-sized or uniquely-shaped mirine plant bugs from Taiwan or the northeastern Oriental Region. Two new genera, Rhopalimiris n. gen. and Taiwanocapsus n. gen. are described to accommodate three new species, Rhopalimiris amplissimus n. sp., R. gagai n. sp. and Taiwanocapsus luteocordatus n. sp., which are diagnosed and described. In addition, new species of Eocalocoris Miyamoto & Yasunaga and Eurystylus Stål, namely Eo. gotohi n. sp. and Eu. yixuanae n. sp., are also described. An updated checklist of the Taiwanese Mirini is also provided.
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- 2023
8. Survival outcomes following salvage abdominoperineal resection for recurrent and persistent anal squamous cell carcinoma
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Daichi Kitaguchi, Yuichiro Tsukada, Masaaki Ito, Satoshi Horasawa, Hideaki Bando, Takayuki Yoshino, Kazutaka Yamada, Yoichi Ajioka, and Kenichi Sugihara
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Oncology ,Surgery ,General Medicine - Published
- 2023
9. Characteristics of anal canal squamous cell carcinoma as an HPV-associated cancer in Japan
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Kazutaka Yamada, Kouya Shiraishi, Atsuo Takashima, Daisuke Takayanagi, Yasumitsu Saiki, Shota Takano, Masafumi Tanaka, Mitsuko Fukunaga, Kosuke Sugimoto, Yuki Iwasaki, Yasushi Nakamura, Daisaku Kuwahara, Yoriyuki Tsuji, Masahiro Takano, Kenichi Sugihara, and Yoichi Ajioka
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Oncology ,Surgery ,Hematology ,General Medicine - Published
- 2023
10. A Retrospective Critique of the Various Sphincter-preserving Surgical Procedures for Ischiorectal Fistula
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Yoriyuki, Tsuji, Shota, Takano, Kazutaka, Yamada, and Masahiro, Takano
- Abstract
In the 1950s, the cause of anal fistulas was identified as an infection of the anal gland (cryptoglandular infection theory). Thereafter, treatment for this disorder began in the 1960s with the lay-open procedure, which involved incising the sphincter and the fistula tract. However, it was found that too much invasion into the sphincter could result in postoperative fecal incontinence. Thus, to reduce such risk, sphincter-preserving surgery was applied for superficial anal fistula in 1961 and for deep anal fistula (ischiorectal fistula) in 1965. Over the years, more effective sphincter-preserving procedures for ischiorectal fistula have been developed to improve the quality of life of the patient. In this review article, we aim to first introduce the basic surgical techniques for ischiorectal fistula. We will discuss the anatomy of the anus and the pathogenesis of ischiorectal fistula and will provide some diagnostic methods. Representative sphincter-preserving procedures that have been performed for ischiorectal fistula since 1965 will also be categorized and outlined chronologically. The discussion will look at the following techniques for ischiorectal fistula and outline the advantages and disadvantages of each procedure so that they can be used as a reference for ischiorectal fistula surgery in the future: the lay-open procedure (fistulotomy and fistulectomy), the Hanley procedure (first partial sphincter-preserving procedure), the muscle-filling procedure, the Moriya method and Ui method (modified partial sphincter-preserving procedure), the Takano method and the sphincter-preserving lateral procedure (complete sphincter-preserving procedure), the seton method (a cross between the lay-open procedure and sphincter-preserving procedure), and the overseas sphincter-preserving procedure.
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- 2022
11. A case report: Characteristic plain radiographic findings of a displaced abomasum in a heifer
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Kazuhiro Kawai, T Kondo, Ken Onda, Kazutaka Yamada, K. Kazama, S Arai, K Kazuyuki, and Y Shinozuka
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animal structures ,General Veterinary ,business.industry ,animal diseases ,Radiography ,parasitic diseases ,Medicine ,Anatomy ,Displaced abomasum ,business - Published
- 2022
12. Expression and functional maintenance of volume-regulated anion channels in myometrial smooth muscles of pregnant mice
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Futoshi Toyoda, Mariko Omatsu-Kanbe, Fuminori Kimura, Takashi Murakami, Hiroshi Matsuura, Wei-Guang Ding, Kazutaka Yamada, Shunichiro Tsuji, and Daisuke Katsura
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Anions ,Programmed cell death ,General Veterinary ,Chemistry ,Myometrium ,Membrane Proteins ,Cellular homeostasis ,Muscle, Smooth ,General Medicine ,General Biochemistry, Genetics and Molecular Biology ,Cell biology ,Blot ,Cell membrane ,Mice ,medicine.anatomical_structure ,Membrane protein ,Pregnancy ,Osmolyte ,medicine ,Animals ,Osmotic pressure ,Female ,Animal Science and Zoology ,Cell Size - Abstract
Pregnancy causes changes in the uterus, such as increased cell volume and altered water content. However, the mechanisms that protect the structure and maintain the function of uterine smooth muscle cells against these changes during pregnancy have not been clarified. This study focused on the volume-regulated anion channel (VRAC), which opens with cell swelling under low osmotic pressure and releases Cl- ions and various organic osmolytes to resist cell swelling and regulates a wide range of biological processes such as cell death. In this study, myometrial smooth muscle (MSM) tissues and cells (MSMCs) were collected from non-pregnant and pregnant mice. Using western blotting and immunocytochemistry, leucine-rich repeat containing protein 8A (LRRC8A), an essential membrane protein that constitutes part of the VRAC, was determined to be diffused throughout MSMCs including in the cell membrane. Patch-clamp experiments were performed to investigate the electrophysiology of swelling-induced Cl- currents (ICl, swell) mediated by the VRAC. No significant changes between non-pregnancy and pregnancy groups were observed in either the expression density of LRRC8A or the current density of ICl, swell, however the presence of LRRC8A on the cell membrane was significantly increased in the third trimester of pregnancy compared to the non-pregnancy. This study suggests that the VRAC may play a role, such as maintaining cellular homeostasis in the pregnant MSM.
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- 2022
13. A Case of Refractory Functional Defecation Disorder (Dyssynergic Defecation) Constipation Leading to Surgical Treatment
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Hideaki Nishigori, Syouta Takano, Satoshi Tabuchi, Yasue Irei, Daisaku Kuwahara, Yasushi Nakamura, Saburou Hisano, Yoriyuki Tsuji, Kazutaka Yamada, Masahiro Takano, Koichiro Yoshimaru, and Tomoaki Taguchi
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Gastroenterology ,Surgery - Published
- 2022
14. Countermeasures Against Aspergillosis in Captive Penguins
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Takahito Toyotome, Naoya Matsumoto, Megumi Itoh, and Kazutaka Yamada
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Infectious Diseases ,Microbiology - Published
- 2022
15. Characteristic computed tomographic myelography findings in 23 Thoroughbred horses
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Taro KONDO, Fumio SATO, Nao TSUZUKI, Kenichi WATANABE, Noriyuki HORIUCHI, Yoshiyasu KOBAYASHI, and Kazutaka YAMADA
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Spinal Stenosis ,General Veterinary ,Cervical Vertebrae ,Animals ,Horse Diseases ,Horses ,Tomography, X-Ray Computed ,Myelography ,Spinal Cord Diseases - Abstract
The purpose of this observational study was to determine the characteristic computed tomographic (CT) myelography findings of cervical vertebral stenotic myelopathy (CVSM) lesions in Thoroughbred horses. A total of 23 Thoroughbred horses (age range, 155-717 days on CT examination; mean, 410.9 days) were analyzed. All 23 Thoroughbred horses underwent unenhanced radiography, radiographic myelography, and CT myelography. Unenhanced radiographs were observed the presence of cervical vertebral malalignment and osseous lesions. Radiographic myelograms were observed for signs of cervical spinal cord compression; additionally, CT myelograms were used to detect cervical vertebral osseous lesions. Ventral compressions were frequently observed in the cranial cervical vertebrae (C2-C4), whereas dorsal compressions were frequently observed in the caudal cervical vertebrae (C5-C7). Furthermore, osseous lesions of the caudal articular process developed more frequently than those of the cranial articular process. CT myelography in Thoroughbred horses is a useful method for detecting CVSM changes.
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- 2022
16. Effect of Biologics on the Risk of Advanced-Stage Inflammatory Bowel Disease-Associated Intestinal Cancer: A Nationwide Study
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Ryo, Seishima, Koji, Okabayashi, Hiroki, Ikeuchi, Motoi, Uchino, Kitaro, Futami, Tatsuki, Noguchi, Hiroki, Ohge, Yasuhito, Iseki, Kazuhiro, Watanabe, Michio, Itabashi, Kinya, Okamoto, Yuji, Toiyama, Takayuki, Ogino, Masafumi, Nakamura, Kazutaka, Yamada, Toshifumi, Wakai, Yu, Sato, Hideaki, Kimura, Kenichi, Takahashi, Koya, Hida, Yusuke, Kinugasa, Fumio, Ishida, Junji, Okuda, Koji, Daito, Fumikazu, Koyama, Hideki, Ueno, Takayuki, Yamamoto, Seiichiro, Yamamoto, Tsunekazu, Hanai, Atsuo, Maemoto, Junya, Arakaki, Koji, Komori, Yoshito, Akagi, Dai, Shida, Shigeki, Yamaguchi, Keiji, Matsuda, Kiyoshi, Maeda, Toshihiro, Noake, Riichiro, Nezu, Shin, Sasaki, Junichi, Hasegawa, Eiji, Sunami, Yukihide, Kanemitsu, Kenji, Katsumata, Kei, Uehara, Tomomichi, Kiyomatsu, Takeshi, Suto, Shinsuke, Kazama, Takeshi, Yamada, Takenori, Goi, Soichiro, Ishihara, Yoichi, Ajioka, and Kenichi, Sugihara
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Hepatology ,Gastroenterology - Abstract
The aim of this study was to evaluate the effect of biologics on the risk of advanced-stage inflammatory bowel disease (IBD)-associated intestinal cancer from a nationwide multicenter data set.The medical records of patients with Crohn's disease (CD) and ulcerative colitis (UC) diagnosed with IBD-associated intestinal neoplasia (dysplasia or cancer) from 1983 to 2020 were included in this study. Therapeutic agents were classified into 3 types: biologics, 5-aminosalicylic acid, and immunomodulators. The pathological cancer stage was compared based on the drug used in both patients with CD and UC.In total, 1,042 patients (214 CD and 828 UC patients) were included. None of the drugs were significantly associated with cancer stage in the patients with CD. In the patients with UC, an advanced cancer stage was significantly associated with less use of biologics (early stage: 7.7% vs advanced stage: 2.0%, P0.001), 5-aminosalicylic acid, and immunomodulators. Biologic use was associated with a lower incidence of advanced-stage cancer in patients diagnosed by regular surveillance (biologics [-] 24.5% vs. [+] 9.1%, P = 0.043), but this was not the case for the other drugs. Multivariate analysis showed that biologic use was significantly associated with a lower risk of advanced-stage disease (odds ratio = 0.111 [95% CI, 0.034-0.356], P0.001).Biologic use was associated with a lower risk of advanced IBD-associated cancer in patients with UC but not with CD. The mechanism of cancer progression between UC and CD may be different and needs to be further investigated.
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- 2023
17. First Record of the Predatory Insects, Androthrips ramachandrai (Karny) (Thysanoptera: Phlaeothripidae) and Montandoniola indica Yamada (Hemiptera: Anthocoridae) on the Pest Thrips, Gynaikothrips ficorum (Marchal) (Thysanoptera: Phlaeothripidae) in Turkey
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Serkan PEHLİVAN, Ekrem ATAKAN, Tange Denis ACHIRI, and Kazutaka YAMADA
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The Cuban laurel thrips, Gynaikothrips ficorum (Marchal) (Thysanoptera: Phlaeothripidae), is widely distributed to the eastern Mediterranean region of Turkey and causing damage to Ficus microcarpa var. nitida plants. Biological control of G. ficorum has a crucial role to maintain the population density of this pest insect at an acceptable level on Ficus trees. For this reason, to determine the potential biological control agents of this pest, survey studies have been done in Adana and Mersin provinces. The Androthrips ramachandarai (Karny) (Thysanoptera: Phlaeothripidae), and the Montandoniola indica Yamada (Hemiptera: Anthocoridae) were reported for the first time in Turkey in 2020 on G. ficorum that damaging young leaves of the F. microcarpa. Brief diagnoses of G. ficorum and both predatory species were provided. A total of 249 adults of A. ramachandrai and 461 individuals of M. indica were detected in the galled leaves infested with G. ficorum. Moreover, 1959 adults, 1335 immatures and 11851 eggs of G. ficorum were also recorded. There was a positive relationship between pest eggs-A. ramachandrai adults and pest larvae-M. indica adults. Ratios of prey/predatory insects indicated that the predators might have the capability in suppressing the pest thrips on Ficus trees.
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- 2022
18. Sex differences in cervical spinal cord and spinal canal development in Thoroughbred horses
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Taro KONDO, Fumio SATO, Nao TSUZUKI, and Kazutaka YAMADA
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Male ,Sex Characteristics ,Spinal Stenosis ,General Veterinary ,Animals ,Cervical Cord ,Female ,Horse Diseases ,Horses ,Spinal Canal ,Spinal Cord Compression ,Spinal Cord Diseases - Abstract
Cervical vertebral stenotic myelopathy (CVSM), a common cause of cervical spinal cord compression, is a neurological disease characterized by general proprioceptive ataxia and weakness of hindlimbs that tends to develop in young adult Thoroughbred horses. Although male horses seem to be at increased risk for CVSM, the mechanism for the occurrence of sex differences in the prevalence of CVSM is still poorly understood. Hence, we hypothesized that sex differences in the development of cervical spinal cord and spinal canal would affect the development of CVSM. This study aimed to evaluate sex differences in the development of cervical spinal cord and spinal canal in Thoroughbred horses. A total of 29 Thoroughbred horses underwent computed tomographic myelography. Thereafter, the volumes of cervical spinal cord and spinal canal were calculated. Accordingly, male horses had significantly lager cervical spinal cord volume and cervical spinal cord-to-spinal canal volume ratio than those of female horses (P0.05). Sex differences in the cervical spinal cord-to-spinal canal volume ratio gradually decreased until around 1,400 days of age. Younger male horses have narrower interspace between the cervical spinal cord and spinal canal than younger female horses, suggesting that an imbalanced cervical spinal cord and spinal canal growth is one of the causes of CVSM.
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- 2022
19. Nomogram as a novel predictive tool for lymph node metastasis in T1 colorectal cancer treated with endoscopic resection: a nationwide, multicenter study
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Yoshiki Kajiwara, Shiro Oka, Shinji Tanaka, Takahiro Nakamura, Shoichi Saito, Yosuke Fukunaga, Manabu Takamatsu, Hiroshi Kawachi, Kinichi Hotta, Hiroaki Ikematsu, Motohiro Kojima, Yutaka Saito, Masayoshi Yamada, Yukihide Kanemitsu, Shigeki Sekine, Shinji Nagata, Kazutaka Yamada, Nozomu Kobayashi, Soichiro Ishihara, Yusuke Saitoh, Kenji Matsuda, Kazutomo Togashi, Koji Komori, Megumi Ishiguro, Toshio Kuwai, Takashi Okuyama, Akihiro Ohuchi, Shinobu Ohnuma, Kazuhiro Sakamoto, Tamotsu Sugai, Kenji Katsumata, Hiro-o Matsushita, Hiro-o Yamano, Hirotsugu Eda, Toshio Uraoka, Naohiko Akimoto, Hirotoshi Kobayashi, Yoichi Ajioka, Kenichi Sugihara, and Hideki Ueno
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Gastroenterology ,Radiology, Nuclear Medicine and imaging - Published
- 2023
20. Investigation of a contributing factor for cervical vertebral stenotic myelopathy using computed tomography for measuring the cervical vertebral volume
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Taro KONDO, Yamato MASHIMO, Fumio SATO, Nao TSUZUKI, and Kazutaka YAMADA
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Male ,Spinal Stenosis ,General Veterinary ,Cervical Vertebrae ,Animals ,Horse Diseases ,Horses ,Tomography, X-Ray Computed ,Spinal Cord Diseases - Abstract
Thoroughbred horses appear to be particularly predisposed to cervical vertebral stenotic myelopathy (CVSM), also known as wobbler syndrome. We hypothesized that variations in the cervical vertebral volumes can affect the dynamic instability of the cervical vertebrae. This observational study aimed to clarify whether cervical vertebral volume could be considered as a contributing factor in CVSM in Thoroughbred horses. Computed tomography (CT) was used to investigate a total of 21 male Thoroughbred horses (age range, 217-1,002 days; mean, 542.3 days). The study population comprised 17 CVSM horses (age range, 217-1,002 days; mean, 549.8 days) and 4 non-CVSM horses (age range, 244-682 days; mean, 510.5 days). The cervical vertebral volumes of three-dimensional CT were measured using the image-processing software. A significant difference in the variation of cervical vertebral volumes among C2 to C4 and C3 to C5 was identified in the CVSM group (P0.05). While no significant differences were found in the variation in cervical vertebral volumes among C4 to C6. C3 demonstrated a significantly smaller cervical vertebral volume than C2 and C4 (P0.05). In the non-CVSM group, no significant differences were found in the variation of cervical vertebral volume among C2 to C4, C3 to C5, and C4 to C6. Our findings suggest that variations in cranial cervical vertebral volume in CVSM male horses can be considered as an important contributing factor in CVSM development.
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- 2022
21. [Countermeasures Against Aspergillosis in Captive Penguins]
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Takahito, Toyotome, Naoya, Matsumoto, Megumi, Itoh, and Kazutaka, Yamada
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Soil ,Aspergillus ,Aspergillus fumigatus ,Animals ,Aspergillosis ,Spheniscidae - Abstract
Aspergillosis is a major fungal infection in humans and animals. Penguins (Order Spheniscidae) are particularly susceptible to aspergillosis, and aspergillosis in captive penguins is presently a major problem. We were faced with the challenge of combating aspergillosis in an aquarium. As a solution, we organized a multidisciplinary aspergillosis control team, including a medical and veterinary mycologist. Since Aspergillus, including Aspergillus fumigatus, is abundant in soil, we thought it necessary to minimize contact between captive penguins and soil to prevent aspergillosis. As a countermeasure, we stopped using a route for outdoor penguin marches where the soil was exposed. Additionally, after outdoor penguin marches, the feet of penguins were washed with seawater to avoid bringing soil into the rearing facility for penguins. Furthermore, since A. fumigatus was detected on several spots in the environment of the rearing facility by swab analysis, we cleaned and sanitized the rearing facility with 0.02% sodium hypochlorite and hot water. As a result of the above measures, there has been no incidence of aspergillosis in captive penguins since 2016. These results show that our preventive measures are working well. As shown here, we presented an example of how the multidisciplinary control team, which included a mycologist, successfully implemented preventive measures against aspergillosis. Due to changes in the rearing environment and the impact of global warming on penguins, it is expected that the role of mycologists in aspergillosis control will expand in the future.
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- 2022
22. Postoperative elevation in the plasma CCL2 level is a predictive biomarker of colorectal cancer recurrence
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Mitsuko Fukunaga, Qingjiang Hu, Masaki Mori, Kazutaka Yamada, Takaaki Masuda, and Koshi Mimori
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Male ,Oncology ,medicine.medical_specialty ,Chemokine ,Colorectal cancer ,Enzyme-Linked Immunosorbent Assay ,CCL2 ,03 medical and health sciences ,0302 clinical medicine ,Immune system ,Predictive Value of Tests ,Surgical oncology ,Internal medicine ,Biomarkers, Tumor ,Tumor Microenvironment ,Humans ,Medicine ,Postoperative Period ,Chemokine CCL2 ,Neoplasm Staging ,Predictive biomarker ,biology ,business.industry ,Macrophages ,General Medicine ,medicine.disease ,Primary tumor ,030220 oncology & carcinogenesis ,biology.protein ,Biomarker (medicine) ,Female ,030211 gastroenterology & hepatology ,Surgery ,Neoplasm Recurrence, Local ,Colorectal Neoplasms ,business - Abstract
There is currently no adequate biomarker for predicting colorectal cancer (CRC) recurrence. Chemokine (C–C motif) ligand 2 (CCL2) induces macrophages and fibroblasts to occupy metastatic niches in distant organs. The purpose of this study was to examine CCL2 as a potential predictive biomarker for CRC recurrence. Plasma samples (n = 402) were collected from 80 stage II/III/IV CRC cases and the relationship between CCL2 profiles and recurrence was investigated. The tumor immune response genes associated with CCL2 mRNA expression in a subgroup of 8 stage I/II CRC cases with 12 recurrent sites and The Cancer Genome Atlas database were also analyzed retrospectively. Sixteen stage II/III/IV postoperative recurrent CRC cases experienced a significant increase in plasma CCL2 levels 6 months after surgery and continuously increased even after R0-1 resection. The 6-month postoperative CCL2 levels in recurrent cases of ≥ 1 year were significantly higher than in non-recurrent cases and recurrent cases of
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- 2021
23. Optimal bowel resection margin in colon cancer surgery: prospective multicentre cohort study with lymph node and feeding artery mapping
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Hideki Ueno, Kazuo Hase, Akio Shiomi, Manabu Shiozawa, Masaaki Ito, Toshihiko Sato, Yojiro Hashiguchi, Takaya Kusumi, Yusuke Kinugasa, Hideyuki Ike, Kenji Matsuda, Kazutaka Yamada, Koji Komori, Keiichi Takahashi, Yukihide Kanemitsu, Heita Ozawa, Masayuki Ohue, Tadahiko Masaki, Yasumasa Takii, Atsushi Ishibe, Jun Watanabe, Yuji Toiyama, Hiromichi Sonoda, Keiji Koda, Yoshito Akagi, Michio Itabashi, Takahiro Nakamura, and Kenichi Sugihara
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Psychiatry and Mental health ,Infectious Diseases ,Health Policy ,Pediatrics, Perinatology and Child Health ,Public Health, Environmental and Occupational Health ,Internal Medicine ,Obstetrics and Gynecology ,Geriatrics and Gerontology - Published
- 2023
24. Mobility of the forearm skeleton in the Asiatic black (Ursus thibetanus), brown (U. arctos) and polar (U. maritimus) bears
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Hajime Taru, Nao Tsuzuki, Nobutaka Sato, Motoharu Oishi, Rumiko Nakashita, Daisuke Fukui, Kazutaka Yamada, Nobuo Kitamura, Motoki Sasaki, Misako Kuroe, Hayato Amaike, Naoya Matsumoto, Tomoko Anezaki, Hideki Endo, Yuko Iketani, Ryohei Nakamura, Gen Bando, and Mitsunori Kayano
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medicine.anatomical_structure ,General Veterinary ,biology ,Life style ,Ulna ,Ct analysis ,medicine ,Polar ,Forearm skeleton ,Anatomy ,Ursus ,biology.organism_classification - Abstract
In several primates and carnivores, pronation/supination angles of the forearm skeleton were examined, and it is thought that a larger angle is useful to acquire dexterous behaviors in feeding and/or life style, including climbing. In this study, the pronation/supination angles in Asiatic black, brown and polar bears were nondestructively examined. These specimens were classified as adult or non-adult. Three or four carcasses of each group of Asiatic black and brown bears were used for CT analysis, whereas only one adult polar bear was used. The forearms were positioned within the gantry of a CT scanner in both maximally supinated and pronated states. Extracted cross-sectional CT images of two positions were superimposed by overlapping the outlines of each ulna. The centroids of the radii were detected, and then the centroid of each radius and the midpoint of a line which connects between both ends of the surface of each radius facing the ulna, were connected by lines to measure the angle of rotation as an index of pronation/supination. In adult brown and polar bears, the angles were smaller as compared with the other groups (Asiatic black and non-adult brown bears). Asiatic black and non-adult brown bears can climb trees, whereas adult brown bears and polar bears cannot. This suggests that the pronation/supination angle is related to arboreal activity in Ursidae.
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- 2021
25. The Surgical Management of Anal Fissures
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Yasue Irei, Shota Takano, Kazutaka Yamada, Yasushi Nakamura, Hirotaka Hamada, Kouhei Tamaoka, Daisaku Kuwahara, and Yoriyuki Tsuji
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medicine.medical_specialty ,business.industry ,General surgery ,Gastroenterology ,medicine ,Surgery ,business - Published
- 2021
26. The Clinical Efficacy of Endoanal Ultrasonography in Patients with Fecal Incontinence
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Kensaku Fukami, Kazutaka Yamada, Syouta Takano, Yasue Irei, Hirotaka Hamada, Hideaki Nishigori, Satoshi Tabuchi, Saburou Hisano, Masahiro Takano, Yasushi Nakamura, Daisaku Kuwahara, and Yoriyuki Tsuji
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medicine.medical_specialty ,business.industry ,Endoanal ultrasonography ,Gastroenterology ,Urology ,medicine ,Fecal incontinence ,Surgery ,In patient ,Clinical efficacy ,medicine.symptom ,business - Published
- 2021
27. A nationwide, multi‐institutional collaborative retrospective study of colorectal neuroendocrine tumors in Japan
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Masaaki Ito, Kimihiko Funahashi, Hideki Ueno, Hiroyuki Bando, Kazutaka Yamada, Hideo Baba, Keiichi Takahashi, Kenichi Sugihara, Seiji Hasegawa, Yoshiharu Sakai, Shin Fujita, and Tatsuro Yamaguchi
- Subjects
Oncology ,medicine.medical_specialty ,RD1-811 ,Rectum ,RC799-869 ,Neuroendocrine tumors ,Neuroendocrine differentiation ,Internal medicine ,medicine ,rectal tumors ,Lymph node ,neuroendocrine neoplasms ,business.industry ,Gastroenterology ,Cancer ,Retrospective cohort study ,Original Articles ,Diseases of the digestive system. Gastroenterology ,medicine.disease ,Lymphovascular ,medicine.anatomical_structure ,Original Article ,Surgery ,neuroendocrine tumors ,business ,Cohort study - Abstract
Aim Neuroendocrine tumors (NETs) are one of the subtypes of neuroendocrine neoplasms and are defined as epithelial neoplasms with predominant neuroendocrine differentiation. The aim of this study was to clarify the clinicopathological characteristics of colorectal NETs through a nationwide retrospective study in Japan. Methods This multicenter retrospective cohort study of NETs in Japan was conducted by the study group of the Japanese Society for Cancer of the Colon and Rectum. In this study, we aimed to clarify the characteristics of Japanese patients with colorectal NETs. This cohort study included patients with colorectal NETs who were treated from January 2011 to December 2015. Results Most NETs developed in the lower rectum. Predictive factors of lymph node metastasis included size (>10 mm), depth of invasion (muscular propria or greater), NET grade (NET G2), depressed lesion of the tumor, and lymphovascular infiltration. In particular, depressed lesion of the tumor and lymphovascular infiltration were independent predictive factors of lymph node metastasis. The presence of an increased number of these predictive factors increased the lymph node metastasis rate. Conclusion Surgical resection with lymph node dissection is considered in the colorectal NETs patients with predictive factors of lymph node metastasis, the number of which is correlated with incidence of lymph node metastasis., This Japanese multicenter retrospective study revealed clinicopathological characteristics and the risk factors of lymph node metastasis in colorectal neuroendocrine tumors.
- Published
- 2020
28. Clinical features and oncological outcomes of intestinal cancers associated with ulcerative colitis and Crohn's disease
- Author
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Tatsuki, Noguchi, Soichiro, Ishihara, Motoi, Uchino, Hiroki, Ikeuchi, Koji, Okabayashi, Kitaro, Futami, Shinji, Tanaka, Hiroki, Ohge, Hisashi, Nagahara, Kazuhiro, Watanabe, Michio, Itabashi, Kinya, Okamoto, Yoshiki, Okita, Tsunekazu, Mizushima, Yusuke, Mizuuchi, Kazutaka, Yamada, Yoshifumi, Shimada, Yu, Sato, Hideaki, Kimura, Kenichi, Takahashi, Koya, Hida, Yusuke, Kinugasa, Junji, Okuda, Koji, Daito, Fumikazu, Koyama, Hideki, Ueno, Takayuki, Yamamoto, Tsunekazu, Hanai, Atsuo, Maemoto, Koji, Oba, Yoichi, Ajioka, and Kenichi, Sugihara
- Abstract
Patients with longstanding inflammatory bowel disease are at high risk of developing intestinal cancers. In this study, we aimed to elucidate the differences between intestinal cancers associated with ulcerative colitis and Crohn's disease.Intestinal cancers in ulcerative colitis and Crohn's disease patients treated between 1983 and 2020 at 43 Japanese institutions were retrospectively analyzed..A total of 1505 intestinal cancers in 1189 ulcerative colitis and 316 Crohn's disease patients were studied. Almost all of ulcerative colitis-associated cancers (99%) were in the colon and rectum, whereas half of Crohn's disease-associated cancers (44%) were in the anus, with 11% in the small intestine. Ulcerative colitis-associated cancers were diagnosed more frequently by surveillance (67% vs. 25%, P 0.0001) and at earlier stages (stages 0-1, 71% vs. 27%, P 0.0001) compared with Crohn's disease-associated cancers. Colorectal cancers associated with Crohn's disease showed a significantly worse 5-year overall survival rate than those associated with ulcerative colitis (stage 2, 76% vs. 89%, P = 0.01, stage 3, 18% vs. 68%, P = 0.0009, and stage 4, 0% vs. 13%, P = 0.04). Surveillance correlated with earlier diagnoses for ulcerative colitis- and Crohn's disease-associated intestinal cancers, whereas shorter intervals between endoscopic examinations correlated with an earlier cancer diagnosis in ulcerative colitis patients but not in Crohn's disease patients.The clinical and oncological features of ulcerative colitis- and Crohn's disease-associated cancers were very different. Crohn's disease-associated cancers were diagnosed at more advanced stages and were detected less frequently by surveillance. Additionally, they showed a significantly poorer prognosis.
- Published
- 2022
29. An objective index for spinal cord compression on computed tomography in Thoroughbred horses
- Author
-
Taro Kondo, Fumio Sato, Nao Tsuzuki, Chun‐Jen Chen, and Kazutaka Yamada
- Subjects
Spinal Stenosis ,General Veterinary ,Animals ,Horse Diseases ,Horses ,Tomography, X-Ray Computed ,Spinal Cord Compression ,Myelography - Abstract
Computed tomographic myelography can be a useful tool for evaluating vertebral canal stenosis. However, an index of spinal cord compression is yet to be established.This observational descriptive study aimed to establish an index for spinal cord compression using computed tomography (CT).Twenty-three Thoroughbred horses (age, 155-717 days; weight, 205-523 kg) with suspected cervical vertebral malformation were subjected to computed tomographic myelography in dorsal recumbency using large-bore gantry CT to define the entire cervical vertebrae from C1 to C7. Subsequently, the height of the spinal cord was measured in the sagittal plane reformatted using curved multi-planar reformation (MPR), thereby comparing it with stenotic ratio (i.e. dividing the area of spinal cord by that of the subarachnoid space) measured in the transverse plane. The measurement was performed at the level of each of six intervertebral spaces, for a total of 138 sites. Accordingly, the appropriate cut-off value for spinal cord height was determined using the receiver-operating characteristic curve, from which the area under the curve with 95% confidence interval was estimated.The spinal cord compression cut-off value was 7.06 mm, with an area under curve of 0.84. A weak relationship was observed between spinal cord height and stenotic ratio (RFollowing curved MPR, a cut-off value of 7.06 mm may serve as an index for spinal cord compression.
- Published
- 2022
30. Predictive factors of labour onset using ultrasonography
- Author
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Kaori Hayashi, Daisuke Katsura, Shinsuke Tokoro, Takashi Murakami, Kounosuke Suzuki, Shunichiro Tsuji, Fuminori Kimura, and Kazutaka Yamada
- Subjects
Adult ,Middle Cerebral Artery ,medicine.medical_specialty ,Ultrasonography, Prenatal ,Pulse Doppler ,predictive factor ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Predictive Value of Tests ,Pregnancy ,Odds Ratio ,Humans ,Medicine ,Labour onset ,reproductive and urinary physiology ,030219 obstetrics & reproductive medicine ,business.industry ,Obstetrics ,membrane separation ,Obstetrics and Gynecology ,Ultrasonography, Doppler ,ultrasonography ,Predictive factor ,Uterine Artery ,Cervical Length Measurement ,Pulsatile Flow ,030220 oncology & carcinogenesis ,Multivariate Analysis ,Labor Onset ,Female ,labour onset ,Ultrasonography ,business - Abstract
We analysed the effectiveness of transvaginal ultrasonographic and foetal/maternal pulse Doppler findings as predictors of labour onset within 1 week. We included 22 single normal pregnancies and evaluated the one-point and short- and long-term differences in uterine artery pulsatility index (PI), umbilical artery PI, middle cerebral artery PI (MCA-PI), peak systolic velocity, and cervical length (CL). Presence of funnelling and membrane separation over the internal cervical os was evaluated. Significant changes were observed in the one-point measurement of and short-term and long-term differences in CL, the one-point measurement of and long-term difference in MCA-PI, and the presence of membrane separation (Grade 2). In multivariate analysis, the significant predictors were short-term differences in CL (odds ratio [OR]: 5.27), long-term differences in MCA-PI (OR: 13.3), and presence of membrane separation (Grade 2) (OR: 5.38). Transvaginal ultrasonographic and foetal pulse Doppler findings were effective predictors of labour onset within 1 week., Impact statement, What is already known on this subject? Parameters reported to predict labour onset include the Bishop score, cervical length, decreased long-term cervical length, funnelling of the internal cervical os, and adrenal gland volume., What do the results of this study add?Short-term changes in cervical length, long-term changes in middle cerebral artery pulsatility index, and the presence of membrane separation Grade 2 were found to be useful predictive factors of labour onset in this study., What are the implications of these findings for clinical practice and/or further research? The prediction of labour onset enables clinicians to properly manage pregnancy and delivery considering maternal and foetal conditions.
- Published
- 2020
31. Detection of Aspergillus fumigatus in the Captive Environment and Preventive Measures Leading to the Eradication of Penguin Aspergillosis in an Aquarium
- Author
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Naoya Matsumoto, Takahito Toyotome, Kazutaka Yamada, and Megumi Itoh
- Subjects
biology ,medicine ,biology.organism_classification ,Aspergillosis ,medicine.disease ,Aspergillus fumigatus ,Microbiology - Published
- 2020
32. Propiverine Hydrochloride as a Treatment for Fecal Incontinence
- Author
-
Shota Takano, Kazutaka Yamada, and Yasue Irei
- Subjects
medicine.medical_specialty ,Urinary incontinence ,030232 urology & nephrology ,Urology ,RC799-869 ,Pharmacological treatment ,03 medical and health sciences ,Propiverine hydrochloride ,0302 clinical medicine ,Fecal incontinence ,medicine ,Clinical endpoint ,Prospective cohort study ,Pelvic floor ,business.industry ,Gastroenterology ,Diseases of the digestive system. Gastroenterology ,medicine.disease ,Comorbidity ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Original Article ,Surgery ,medicine.symptom ,business - Abstract
Purpose: Propiverine hydrochloride (PH) is widely used for the treatment of urinary incontinence (UI) due to bladder overactivity. Moreover, the comorbidity of UI with fecal incontinence (FI) is known to be due to the relationship of both to nervous system disorders and dysfunction or weakening of the pelvic floor muscles. The aim of this single-arm prospective study was to evaluate the therapeutic value of PH for FI.Methods: Patients (n = 24) who were diagnosed as having both FI and UI from April 2015 to November 2016 were included in the study and administered a dosage of 10–20 mg PH every day for 1 month. The primary endpoint was to create a reduction in the frequency of FI per week. An evaluation criterion of ≥50% reduction in frequency was determined as effective. The percentage of the patients who achieved the ≥50% endpoint (responders) was also calculated.Results: The frequency of FI per week was 6.0 ± 8.2 (0.25–30) at baseline and reduced to 1.6 ± 2.1 (0–7) at the posttherapeutic state (P = 0.005). A reduction of ≥50% was seen in 14 of the patients (58.3%).Conclusion: PH reduced the frequency of FI in patients with both FI and UI. This study introduces a possible therapeutic option for the pharmacological treatment of FI.
- Published
- 2020
33. Local environmental selection and lineage admixture act as significant mechanisms in the adaptation of the widespread East Asian pond skaterGerris latiabdoministo heterogeneous landscapes
- Author
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Wenwu Wang, Zhen Ye, Shujing Wang, Siying Fu, Yahui Zhen, Jakob Damgaard, Jingyu Liang, Xin Yang, Wenjun Bu, Xiuxiu Zhu, Kun Jiang, Juanjuan Yuan, Pingping Chen, and Kazutaka Yamada
- Subjects
Lineage (genetic) ,Ecology ,Gerris latiabdominis ,Ecological selection ,Evolutionary biology ,East Asia ,Biology ,Adaptation ,Ecology, Evolution, Behavior and Systematics - Published
- 2020
34. A Case of Rectal Adenocarcinoma with Heterotopic Ossification and Peritoneal Dissemination
- Author
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Masafumi Tanaka, Takafumi Suzuki, Kazutaka Yamada, Yasue Irei, and Yasumitsu Saiki
- Subjects
Pathology ,medicine.medical_specialty ,business.industry ,Rectal Adenocarcinoma ,Medicine ,Heterotopic ossification ,business ,medicine.disease - Published
- 2020
35. Treatment Outcome of Anal Canal Cancer with Pagetoid Spread in Japan
- Author
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Kazutugu Iwamoto, Kazutaka Yamada, Tadaaki Noguchi, Masafumi Tanaka, Yasue Irei, Mitsuko Fukunaga, and Yasumitsu Saiki
- Subjects
medicine.medical_specialty ,business.industry ,Pagetoid ,Treatment outcome ,Gastroenterology ,Medicine ,Surgery ,Anal Canal Cancer ,business ,Dermatology - Published
- 2020
36. Evaluation of the air sac volume of penguins with respiratory diseases using computed tomography
- Author
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Naoya MATSUMOTO, Nanako SAWAYAMA, Megumi ITOH, Takahito TOYOTOME, and Kazutaka YAMADA
- Subjects
General Veterinary ,Air Sacs ,Animals ,Aspergillosis ,Itraconazole ,Tomography, X-Ray Computed ,Spheniscidae - Abstract
Captive penguins with respiratory diseases exhibit advanced pathological conditions upon the appearance of clinical signs. Therefore, the successful treatment of respiratory diseases remains difficult after the onset of clinical signs, leading to high mortality rates. In this study, we measured air sac volume using computed tomography (CT) to evaluate the respiratory condition of penguins. In a regular quarterly health checkup, blood samples were collected from 45 penguins housed at an aquarium in Hokkaido, Japan. A total of 12 penguins with abnormal blood parameters underwent CT. The air sac volumes were calculated in three-dimensional CT, and the scatter plots of the air sac volumes and body weights were analyzed. No correlation was found between the air sac volume and body weight in both the gentoo and king penguins. Two gentoo penguins with infiltration and one king penguin with multiple nodules on CT were tentatively diagnosed with aspergillosis and treated with oral administration of itraconazole. Follow-up CT examination was performed until the outcome: healed or died. The mean air sac volumes of the two gentoo penguins, which recovered after treatment, increased from 273.9 and 329.0 cm
- Published
- 2022
37. Congenital malformations of the external and middle ear accompanied by temporal bone anomaly in a calf
- Author
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Naoyuki AIHARA, Anna MOMOKI, Nanase HATTORI, Hironobu MURAKAMI, Motoharu OISHI, Yoshiaki GOTO, Reiichiro SATO, Makoto NAGAI, Kazutaka YAMADA, and Junichi KAMIIE
- Subjects
Tympanic Membrane ,General Veterinary ,Animals ,Ear, Middle ,Temporal Bone ,Female ,Tomography, X-Ray Computed - Abstract
A 7-month-old female Holstein calf presented with bilateral microtia and absent external acoustic meatus. The real-time polymerase chain reaction test was negative for bovine viral diarrhea virus and bovine leukemia virus. The calf's dam had a normal reproductive history. Computed tomography confirmed bilateral atresia of external auditory canals, aplasia of tympanic cavities and the ossicular chain, and temporomandibular joint abnormality. Necropsy revealed a severe malformation of the temporal bone. In the tympanic region, the external acoustic pore, tympanic bulla, and muscular process were absent bilaterally. The bilateral inner ear structure was normal. Based on these findings, we diagnosed the present case as congenital malformations of the external and middle ear accompanied by temporal bone anomaly.
- Published
- 2022
38. Characteristics of anal canal cancer in Japan
- Author
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Kazutaka Yamada, Yasumitsu Saiki, Koji Komori, Akio Shiomi, Masashi Ueno, Masaaki Ito, Koya Hida, Seiichiro Yamamoto, Manabu Shiozawa, Soichiro Ishihara, Yukihide Kanemitsu, Hideki Ueno, Tatsuya Kinjo, Kotaro Maeda, Junichiro Kawamura, Fumihiko Fujita, Keiichi Takahashi, Tsunekazu Mizushima, Yasuhiro Shimada, Shin Sasaki, Eiji Sunami, Fumio Ishida, Keiji Hirata, Shinobu Ohnuma, Kimihiko Funahashi, Jun Watanabe, Yusuke Kinugasa, Shigeki Yamaguchi, Yojiro Hashiguchi, Masataka Ikeda, Takeshi Sudo, Yoshito Komatsu, Keiji Koda, Kazuhiro Sakamoto, Masazumi Okajima, Hideyuki Ishida, Yuichi Hisamatsu, Taiki Masuda, Shinichiro Mori, Kazuhito Minami, Seiji Hasegawa, Shungo Endo, Akinori Iwashita, Madoka Hamada, Yoichi Ajioka, Koichiro Usuku, Tokunori Ikeda, and Kenichi Sugihara
- Subjects
Cancer Research ,Oncology ,Japan ,Carcinoma, Squamous Cell ,Anal Canal ,Humans ,Radiology, Nuclear Medicine and imaging ,Adenocarcinoma ,Anus Neoplasms ,Retrospective Studies - Abstract
Anal canal cancer (ACC) has been reported to be an uncommon cancer in Japan, as in the USA, Europe, and Australia. This retrospective multi-institutional study was conducted to clarify the characteristics of ACC in Japan. First, the histological ACC type cases treated between 1991 and 2015 were collected. A detailed analysis of the characteristics of anal canal squamous cell carcinoma (SCC) cases was then conducted. The results of the histological types revealed that of the 1781 ACC cases, 435 cases (24.4%) including seven cases of adenosquamous cell carcinomas were SCC and 1260 cases (70.7%) were adenocarcinoma. However, the most common histological type reported in the USA, Europe, and Australia is SCC. Most ACC cases are adenocarcinomas and there is a low incidence of SCC in Japan which is different from the above-mentioned countries. Moreover, we reclassified T4 into the following two groups based on tumor size: T4a (tumor diameter of 5 cm or less) and T4b (tumor diameter of more than 5 cm). The results of the TNM classification of SCC revealed that the hazard ratio (HR) to T1 of T2, T3, T4a, and T4b was 2.45, 2.28, 2.89, and 4.97, respectively. As T4b cases had a worse prognosis than T4a cases, we propose that T4 for anal canal SCC in Japan be subclassified into T4a and T4b.
- Published
- 2022
39. Role of Autopsy Imaging in Veterinary Forensics: Experiences in 39 Cases
- Author
-
Kazutaka Yamada, Kanako Sato, Eiichi Kanai, and Hiroo Madarame
- Published
- 2022
40. Three new species of the flower bug genus Orius (Hemiptera: Heteroptera: Anthocoridae) from Nepal
- Author
-
Ram Keshari Duwal, Tomohide Yasunaga, and Kazutaka Yamada
- Subjects
Insecta ,Arthropoda ,biology ,Heteroptera ,Biodiversity ,biology.organism_classification ,Anthocoridae ,Hemiptera ,Genus ,Insect Science ,Botany ,Orius ,Animalia ,Hemiptera (awaiting allocation) ,Ecology, Evolution, Behavior and Systematics ,Taxonomy - Abstract
Three new species of the flower bug genus Orius Wolff, 1811 (Anthocorinae: Oriini) are described as new, namely Orius (Orius) ekaii sp. nov., O. (Orius) nigromaritus sp. nov., and O. (Xylorius) paveli sp. nov., all from Nepal. The plant association and habitat are documented for each new species. Habitus images of live individuals and scanning electron micrographs are also provided to aid in proper recognition of their identities. A checklist of Orius species known from South Asia (SAARC nations) is incorporated; Orius indicus (Reuter, 1884) is herein placed in the subgenus Dimorphella Reuter, 1884.
- Published
- 2019
41. The tribe Anthocorini in Japan (Hemiptera: Anthocoridae): descriptions of new species, review of distribution and bionomics
- Author
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Kazutaka Yamada and Tomohide Yasunaga
- Subjects
Insecta ,biology ,Arthropoda ,business.industry ,Zoology ,Distribution (economics) ,Biodiversity ,biology.organism_classification ,Tribe (biology) ,Anthocoridae ,Hemiptera ,Zoogeography ,Bionomics ,Insect Science ,Anthocoris ,Animalia ,business ,Ecology, Evolution, Behavior and Systematics ,Anthocoris nemoralis ,Taxonomy - Abstract
Japanese Anthocorini are reviewed. A total of five genera and 13 species were identified, including two new species described below: Temnostethus mirificus sp. nov. and Anthocoris venustus sp. nov. Previous records of Anthocoris miyamotoi Hiura, 1959 from Japan are considered to be confused with A. venustus sp. nov. Anthocoris nemoralis (Fabricius, 1794), which is a common and widespread species in Europe, is recorded in Japan for the first time; it is assumed to have been accidentally introduced into Japan recently. Temnostethus distans Kerzhner, 1973 and Anthocoris kalopanacis Kerzhner, 1977 are newly recorded in Japan proper. Male and female genitalia are illustrated and described for most of the treated species. Identification keys to the genera and species that occur in Japan are provided. Bionomics are provided for each species. Detailed locality information and distribution maps in Japan are presented for all Japanese species and their zoogeography is discussed.
- Published
- 2021
42. Author response for 'An objective index for spinal cord compression on computed tomography in Thoroughbred horses'
- Author
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null Taro Kondo, null Fumio Sato, null Nao Tsuzuki, null Chun‐Jen Chen, and null Kazutaka Yamada
- Published
- 2021
43. Mobility of the forearm skeleton in the Asiatic black (Ursus thibetanus), brown (U. arctos) and polar (U. maritimus) bears
- Author
-
Hayato, Amaike, Motoki, Sasaki, Nao, Tsuzuki, Mitsunori, Kayano, Motoharu, Oishi, Kazutaka, Yamada, Hideki, Endo, Tomoko, Anezaki, Naoya, Matsumoto, Rumiko, Nakashita, Misako, Kuroe, Hajime, Taru, Gen, Bando, Yuko, Iketani, Ryohei, Nakamura, Nobutaka, Sato, Daisuke, Fukui, and Nobuo, Kitamura
- Subjects
polar bear ,Full Paper ,Forelimb ,brown bear ,Animals ,Asiatic black bear ,forearm ,Anatomy ,rotation ,Skeleton ,Ursidae - Abstract
In several primates and carnivores, pronation/supination angles of the forearm skeleton were examined, and it is thought that a larger angle is useful to acquire dexterous behaviors in feeding and/or life style, including climbing. In this study, the pronation/supination angles in Asiatic black, brown and polar bears were nondestructively examined. These specimens were classified as adult or non-adult. Three or four carcasses of each group of Asiatic black and brown bears were used for CT analysis, whereas only one adult polar bear was used. The forearms were positioned within the gantry of a CT scanner in both maximally supinated and pronated states. Extracted cross-sectional CT images of two positions were superimposed by overlapping the outlines of each ulna. The centroids of the radii were detected, and then the centroid of each radius and the midpoint of a line which connects between both ends of the surface of each radius facing the ulna, were connected by lines to measure the angle of rotation as an index of pronation/supination. In adult brown and polar bears, the angles were smaller as compared with the other groups (Asiatic black and non-adult brown bears). Asiatic black and non-adult brown bears can climb trees, whereas adult brown bears and polar bears cannot. This suggests that the pronation/supination angle is related to arboreal activity in Ursidae.
- Published
- 2021
44. Gas-filled urachal abscess with a pinging sound in a heifer calf
- Author
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Kazutaka Yamada, Reiichiro Sato, Y Shinozuka, H Ochiai, and K Onda
- Subjects
Sound (medical instrument) ,medicine.medical_specialty ,General Veterinary ,business.industry ,medicine ,Radiology ,business ,Urachal abscess ,Heifer calf - Published
- 2019
45. Perirectal injection of imaging materials for computed tomographic lymphography and near infrared fluorescent thoracoscopy in cats
- Author
-
M Asari, Kazutaka Yamada, Motoharu Oishi, E Kanai, K Kamijo, and N Ichihara
- Subjects
CATS ,General Veterinary ,medicine.diagnostic_test ,business.industry ,medicine.medical_treatment ,Near-infrared spectroscopy ,Chylothorax ,medicine.disease ,Preoperative care ,Fluorescence ,Thoracic duct ,medicine.anatomical_structure ,Thoracoscopy ,medicine ,Nuclear medicine ,business ,Ligature - Published
- 2019
46. Long-term results of intersphincteric resection for low rectal cancer in Japan
- Author
-
Kazutaka Yamada, Kenichi Sugihara, Kensaku Fukami, Yoriyuki Tsuji, Saburo Hisano, Koichiro Usuku, Mitsuko Fukunaga, Shota Takano, Tadaaki Noguchi, Kazutsugu Iwamoto, Tokunori Ikeda, Masafumi Tanaka, Yasushi Nakamura, Yasumitsu Saiki, Masahiro Takano, and Daisaku Kuwahara
- Subjects
Male ,medicine.medical_specialty ,External anal sphincter ,Anal Canal ,Rectum ,Time ,03 medical and health sciences ,Postoperative Complications ,0302 clinical medicine ,Japan ,Surgical oncology ,Surveys and Questionnaires ,Humans ,Medicine ,Fecal incontinence ,Defecation ,Survival rate ,Digestive System Surgical Procedures ,Aged ,Rectal Neoplasms ,business.industry ,Abdominoperineal resection ,Cancer ,General Medicine ,Middle Aged ,medicine.disease ,Surgery ,Survival Rate ,Treatment Outcome ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Propensity score matching ,Female ,030211 gastroenterology & hepatology ,Neoplasm Grading ,Neoplasm Recurrence, Local ,medicine.symptom ,business ,Organ Sparing Treatments ,Fecal Incontinence - Abstract
Intersphincteric resection (ISR) is the ultimate sphincter-preserving procedure for low rectal cancer. A questionnaire about the standardization of ISR was given to 2125 patients who underwent curative ISR for low rectal cancer between 2005 and 2012 at 127 affiliated institutions of the Japanese Society for Cancer of the Colon and Rectum (JSCCR), and the results were compared with the results of a systematic review. The findings revealed that although mortality and morbidity were relatively low and the survival rate after ISR was good, the rates of local recurrence and postoperative fecal incontinence were relatively high. The radicality of ISR was compared with that of abdominoperineal resection and low anterior resection using the propensity score matching prognosis analysis of patients in the JSCCR nationwide registry. The local recurrence rate was significantly higher after ISR, and especially high in patients with T3 (invasion into the external anal sphincter) and T4 disease. These results provide evidence about the factors related to fecal incontinence after ISR. As measures for the standardization of ISR, it is important to reconfirm that ISR is not indicated for patients with cT3 and cT4 disease and those with poor preoperative defecatory function, based on the ISR indication criteria.
- Published
- 2019
47. Bone marrow oedema-type signal in the proximal phalanx of Thoroughbred racehorses
- Author
-
Fumiaki Mizobe, Kazutaka Yamada, Takanori Ueno, and Motoi Nomura
- Subjects
Male ,medicine.medical_specialty ,Proximal phalanx ,Fractures, Stress ,040301 veterinary sciences ,Bone marrow oedema ,Adipose tissue ,proximal phalanx ,0403 veterinary science ,03 medical and health sciences ,Forelimb ,Animals ,Edema ,Medicine ,Clinical significance ,Horses ,Bone Marrow Diseases ,030304 developmental biology ,0303 health sciences ,bone marrow oedema ,General Veterinary ,medicine.diagnostic_test ,business.industry ,Magnetic resonance imaging ,04 agricultural and veterinary sciences ,Anatomy ,Thoroughbred ,Note ,Magnetic Resonance Imaging ,Sagittal plane ,medicine.anatomical_structure ,Adipose Tissue ,Surgery ,Female ,Histopathology ,Bone marrow ,business - Abstract
This study focused on 8 Thoroughbred racehorses showing bone marrow oedema-type signal in the proximal sagittal groove of the proximal phalanx, with the aim of understanding its clinical significance. Standing magnetic resonance imaging played an important role in assessing osseous abnormalities that were not radiographically identifiable. Further, a histopathological result from one of the cases showed there was oedema surrounding adipose tissues with increase in density of trabecular scaffolding. This may indicate presence of osseous injury within the area of decreased elasticity due to subchondral bone modeling. This study suggests that detection of osseous abnormality based on bone marrow oedema-type signal, and application of appropriate care following injury would contribute to prevent deterioration of stress-related fractures of the proximal phalanx.
- Published
- 2019
48. A Case of Rectal Cancer with Ova of Schistosoma Japonicum
- Author
-
Kazutaka Yamada, Kazutsugu Iwamoto, Yasumitsu Saiki, and Masafumi Tanaka
- Subjects
medicine.medical_specialty ,biology ,business.industry ,Colorectal cancer ,Schistosoma japonicum ,Internal medicine ,Medicine ,business ,biology.organism_classification ,medicine.disease ,Gastroenterology - Published
- 2019
49. Prognosis of anal canal adenocarcinoma versus lower rectal adenocarcinoma in Japan: a propensity score matching study
- Author
-
Yasue Irei, Kazutaka Yamada, Mitsuko Fukunaga, Takafumi Suzuki, Yasumitsu Saiki, and Masafumi Tanaka
- Subjects
medicine.medical_specialty ,Population ,Anal Canal ,Adenocarcinoma ,Gastroenterology ,Japan ,Surgical oncology ,Internal medicine ,medicine ,Rectal Adenocarcinoma ,Humans ,education ,Propensity Score ,Lymph node ,Neoplasm Staging ,Retrospective Studies ,education.field_of_study ,business.industry ,Retrospective cohort study ,General Medicine ,medicine.disease ,Prognosis ,Anal canal adenocarcinoma ,medicine.anatomical_structure ,Propensity score matching ,Surgery ,Female ,business - Abstract
Anal canal adenocarcinoma (AC) is rare and its surgical outcomes and prognostic factors (PFs) are not well understood. The aim of this retrospective study was to identify the characteristics and PFs of AC, using population-based data in Japan. Patients with AC (n = 390) or lower rectal adenocarcinoma (LR) (n = 12,477) diagnosed between1991 and 2006 were enrolled in this study. We compared the clinical- and patient-related factors of the two diseases and then examined propensity score matching, overall survival (OS), and PFs. AC tended to develop more often in women and in patients of advanced age. Macroscopically, AC was of an unclassified type and microscopically, it was of high-grade histological types such as mucinous adenocarcinoma, poorly differentiated adenocarcinoma (por), or signet-ring cell carcinoma (sig), with a high frequency of inguinal node metastasis (P
- Published
- 2021
50. Role of autopsy imaging‐computed tomography in the post‐mortem study of farm animals
- Author
-
Reiichiro Sato, Yumi Une, Naoyuki Aihara, Kazutaka Yamada, and Taiki Yokoyama
- Subjects
medicine.medical_specialty ,General Veterinary ,business.industry ,Radiography ,imaging ,Autopsy ,medicine.disease ,radiology ,Lesion ,Dissection ,Hemangiosarcoma ,diagnostics ,medicine ,Actinomycosis ,Radiology ,medicine.symptom ,business ,Abscess ,Pathological ,Research Articles ,Research Article - Abstract
Background Autopsy imaging (Ai) is used to determine the cause of death, providing pre‐dissection information. Ai is often used in the field of human forensic medicine but has never been applied on farm animals. Methods Ai‐computed tomography (CT) was performed before necropsy for farm animals (one goat, one ox, one cow and three calves) that died or were euthanised. Results Ai‐CT findings of rib fractures (case 1), urethral calculi (case 2), multiple osteolytic bone lesions (case 3 and 4) and hair balls (case 4) were confirmed by dissection. However, a tentative diagnosis of actinomycosis was made in an ox (case 5) using antemortem radiography and Ai‐CT, and the mass was identified as ameloblastic fibro‐odontoma on histological examination. A tentative diagnosis of maxillary abscess was made from antemortem radiography in a cow (case 6); however, the lesion was shown to be maxillary neoplasia on Ai‐CT. The mass was identified as hemangiosarcoma on histopathological examination. Conclusion Ai is helpful in pathological examination because the specific findings are known before the dissection, the lesions can be pinpointed in the pathological dissection, facilitating workflow; furthermore, the oversight of lesions can be reduced. In addition, Ai‐CT images, including three‐dimensional images and a three‐dimensional printed model, allowed an easy understanding of pathology among students and farmers. Ai‐CT for farm animals represents a novel option for veterinary education.
- Published
- 2021
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