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排序方式: 共有6093条查询结果,搜索用时 15 毫秒
81.
Yuichiro Hirata Shun Iida Takeshi Arashiro Sayaka Nagasawa Hisako Saitoh Hiroyuki Abe Masako Ikemura Yohsuke Makino Rintaro Sawa Hirotaro Iwase Tetsuo Ushiku Tadaki Suzuki Shinji Akitomi 《Pathology international》2023,73(3):120-126
During the coronavirus disease 2019 (COVID-19) pandemic, autopsies have provided valuable insights into the pathogenesis of COVID-19. The precise effect of this pandemic on autopsy procedures in Japan, especially in instances unrelated to COVID-19, has not yet been established. Therefore, we conducted a questionnaire survey from December 2020 to January 2021 regarding the status of pathological autopsy practices in Japan during the first year of the COVID-19 pandemic. The questionnaire was sent to 678 medical facilities with pathologists, of which 227 responded. In cases where a confirmed diagnosis of COVID-19 was not made at the time of autopsy, many facilities counted them as suspected COVID-19 cases if pneumonia was suspected clinically. At around half of the sites, autopsies were prohibited for suspected COVID-19 cases. In addition, the number of autopsies of non-COVID-19 cases during the pandemic period was also investigated, and a significant decrease was observed compared with the incidence in the pre-pandemic period. The COVID-19 pandemic has affected not only the autopsies of COVID-19 cases but also the entire practice of pathological autopsies. It is necessary to establish a system that supports the implementation of pathological autopsy practices during the pandemic of an emerging infectious disease. 相似文献
82.
Jun Hatazawa Hiroshi Itoh Eku Shimosegawa Iwao Kanno Matsutaroh Murakami Shuichi Miura Hidehiro Iida Toshio Okudera Atsushi Inugami Toshihide Ogawa Hideaki Fujita Yuichi Satoh Ken Nagata Yutaka Hirata Kazuo Uemura 《Annals of nuclear medicine》1994,8(3):213-217
We studied the brain uptake of amino acid in a patient with acute cerebral infarction with L-[2-(F-18)] fluorophenylalanine and positron emission tomography. The increased accumulation of the ligand was specifically found in the peri-infarct area where oxygen metabolism was still maintained but decreased later in the 72-day follow-up period. The kinetic analysis revealed that increased accumulation was not due to increased transport from the blood to the brain but to delayed washout from the brain to the blood. Although the mechanism is still unknown, abnormally high accumulation of L-[F-18]fluorophenylalanine may predict delayed neuronal changes after ischemic insults of the brain. 相似文献
83.
I. Ieiri W. Goto S. Higuchi K. Hirata A. Toshitani S. Imayama Y. Ohyama H. Yamada K. Ohtsubo 《European journal of clinical pharmacology》1995,49(1-2):51-56
The purpose of this study was to assess the possible role of the (R)- and (S)- enantiomers of the phenytoin metabolite p-HPPH in the pathogenesis of gingival hyperplasia (GH). About 98% of circulating p-HPPH is in the (S)-form. There were significant differences between patients with and without GH in (R)-p-HPPH level (0.055 vs 0.042 g·ml–1), both enantiomer/racemate level ratios, and R/S enantiomeric ratio (0.0313 vs 0.0232); an increase in serum (R)-p-HPPH level was observed in patients with GH. In separate experiments, the effect of p-HPPH enantiomers on the proliferation of the normal human dermal fibroblast was studied. The in vitro study showed that (R)-p-HPPH selectively stimulated fibroblast growth. The results suggest that the least abundant metabolite, (R)-p-HPPH, is the most toxic with respect to gingival hyperplasia. 相似文献
84.
Extraadrenal abnormal uptake on adrenocortical scintigraphy has been reported rarely in the normal gallbladder, lipid cell tumor of the ovary, or in clear cell type renal cell carcinoma. Clear cell type renal cell carcinoma contains glycogen and cholesterol like the adrenal gland, but the uptake of the radionuclide I-131 cholesterol has been reported to be low and not sufficient to image it. Right renal and adrenal masses were incidentally discovered on abdominal CT scan in a patient with chronic renal failure resulting in bilateral acquired cystic kidney disease. Adrenocortical scintigraphy done to know the nature of the adrenal mass showed high uptake corresponding to the right renal mass and the right adrenal mass. Clear cell type renal cell carcinoma and adrenal adenoma with prominent clear cells were histologically confirmed on hematoxylin-eosin stain and in an immunohistochemical study with renal cell antibody. Not only low-density lipoprotein receptors mediated uptake but also overall replacement of the right non-tumorous renal parenchyma by acquired cysts may have played a role in imaging the renal cell carcinoma on adrenocortical scintigraphy. 相似文献
85.
Vascular anatomy of the pancreaticoduodenal region: A review 总被引:4,自引:0,他引:4
G. Murakami K. Hirata T. Takamuro M. Mukaiya F. Hata S. Kitagawa 《Journal of Hepato-Biliary-Pancreatic Surgery》1999,6(1):55-68
Vascular anatomy of the pancreaticoduodenal region has been the subject of numerous studies. However, several essential areas
of confusion remain in interpretation of the vascular configuration. We note and discuss three key points in relation to this
confusion: (1) a missing vascular arcade, (2) a rearrangement of the arcade by collateral and/or transverse vessels, and (3)
a solitary vessel without an accompanying comites vein or artery. In addition, we consider that different interpretations
as well as varying reported incidences depend on different "thresholds" when observations are made. Consideration of new aspects
of vascular anatomy of the pancreaticoduodenal region is required for further improvement of surgical procedures. In terms
of the selection of lymph node resection procedure, we discuss mainly the inferior arterial origin. Special attention should
be paid to the ligation of inferior arteries because of the high incidence of the common trunk formation of the upper jejunal
and inferior pancreaticoduodenal arteries. With regard to duodenum-preserving pancreatic head resection for benign tumors,
our observations are introduced in view of either arterial or venous configuration. First, a communicating artery between
the anterior and posterior arterial arcades is noted because of its possible critical role in blood supply to the papilla
of Vater. Second, a venous drainage route from the duodenum to the retroperitoneal space in "normal" specimens is described.
Received for publication on June 17, 1998; accepted on July 27, 1998 相似文献
86.
87.
Connolly et al. [Neurology 48 (1997) 243] reported that IgM M-proteins from three patients selectively binds to an epitope on beta-tubulin that consists of amino acids 301 to 314. We therefore investigated whether these 14 amino acid residues beta301-314 are the target epitope for serum IgMs in sera from 67 patients with chronic inflammatory demyelinating polyneuropathy (CIDP), 50 with Guillain-Barré syndrome, 50 with motor neuron diseases, and 50 normal controls. IgM anti-beta301-314 antibodies were not restricted to nor were selectively associated with CIDP. We conclude that beta301-314 is not a target epitope for serum IgMs in CIDP. 相似文献
88.
Tarumi K Yagihashi A Tsuruma T Koide S Sasaki K Hirata K 《Transplantation proceedings》1999,31(1-2):878-881
89.