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排序方式: 共有272条查询结果,搜索用时 15 毫秒
1.
T Oda S Yoshimura T Hara S Hara M Yahagi C Matsumoto T Ohno Y Nakamura Y Sumi K Sueoka 《Nippon Sanka Fujinka Gakkai zasshi》1987,39(1):113-120
To examine the effects of transient hyperprolactinemia on in vitro fertilization and embryo transfer, 61 cycles in 50 euprolactinemic ovulatory women with irreparable tubal diseases were stimulated with clomiphene (CC) alone or CC and human menopausal gonadotropin followed by human chorionic gonadotropin (hCG). Serum prolactin (PRL) increased after hCG administration with peak values of 45.4 +/- 4.2 ng/ml on the day of laparoscopic oocyte aspiration. The highest serum estradiol (E2) concentration was found on the day before PRL peak and serum progesterone (P) began to increase after hCG injection concomitant with the PRL rise. The group having 50 ng/ml or more of PRL (34 cycles) had significantly higher levels of E2 during preovulatory and early luteal phase compared to those of the group having less than 50 ng/ml of PRL (27 cycles) but there was no significant difference between the P levels in the two groups. In the higher PRL group 72 (62.1%) of 116 collected oocytes were fertilized and 6 (20.0%) conceived. In the lower PRL group 45 oocytes (58.4%) of 77 were fertilized and 3 (12.5%) became pregnant. These data suggest that elevated serum PRL concentrations may have no effect on fertilization of oocytes in vitro or embryonic development. 相似文献
2.
Tadashi Nakazawa Yoshiyuki Takami Robert Benkowski Satoshi Ohtsubo Ohashi Yukio Eiki Tayama Goro Ohtsuka Yoshinari Niimi Julie Glueck Akinori Sueoka Helmut Schmallegger Heinrich Schima Ernst Wolner Yukihiko Nosé 《Artificial organs》1997,21(7):597-601
Abstract: To be able to salvage heart failure patients, the need for an economical permanent ventricular assist device is increasing. To meet this increasing demand, a miniaturized centrifugal blood pump has been developed as a permanently implantable device. The Gyro permanently implantable model (PI-601) incorporates a sealless design with a blood stagnation free structure. The pump impeller is magnetically coupled to the driver magnet in a sealless manner. This pump is atraumatic and antithrombogenic and incorporates a double pivot bearing system. A miniaturized actuator was utilized in this system in collaboration with the University of Vienna. The priming volume of this pump is 20 ml. The overall size of the pump actuator package is 53 mm in height and 65 mm in diameter, 145 ml of displacement volume, and 305 g in weight. Testing to date has included in vitro hydraulic performance and hemolysis. This pump can provide 5 L/min against a 110 mm Hg total pressure head at 2,000 rpm and 8 Limin against 150 mm Hg at 2,500 rpm. The normalized index of hemo-lysis (NIH) value of this pump was 0.0028 g/100 L at 5 Limin against 100 mm Hg. A preliminary anatomical study revealed the possibility of the implantability of 2 such systems in biventricular bypass at a preperitoneal location. This system is feasible for use as a permanently implantable biventricular assist device. 相似文献
3.
Abstract: Membrane Autotransfusion System (MATS) utilizing plasmapheresis technology has been developed in our laboratory. A specially designed polyethylene hollow fiber membrane was utilized. This study was conducted to evaluate performance of the first experimental prototype, MATS-I. The results of this study showed that the MATS-I could concentrate diluted blood at 10% of the initial hematocrit concentration (HCTi) into over 40% after passing through the system at a transmembrane pressure of 70 mm Hg. Moreover, the MATS-I can continuously treat 10,000 ml of diluted blood at various HCTi levels without deteriorating its performances. Even though the MATS-I met all required performances as an autotransfusion system, several areas of improvement of the system were necessary to meet various clinical needs. The next prototype, MATS-II, can be designed based on experiences obtained from the MATS-I. The MATS is smaller, more atraumatic and continuous, and is a faster system when compared to the currently available centrifugal autotransfusion devices. 相似文献
4.
目的I型强直性肌营养不良(myotonic dystrophy 1,DM1)是由于肌强直蛋白激酶基因(DMPK)3`端非翻译区的(CTG)n异常扩增导致。探讨用巢氏PCR法直接扩增该基因在植入前诊断的可行性。方法0.5%低熔点琼脂糖分离来自DMPK(CTG)100的DM1患者的单个精子,巢氏PCR法扩增DMPK基因。结果106例精子标本中53例扩增产物电泳为单条带,但48例产物显示为多条带,扩增产物长度介于(CTG)10至(CTG)30之间。结论利用低熔点琼脂糖可有效分离单个精子进行检查,而巢氏PCR在单细胞水平上直接扩增较多(CTG)n的DMPK基因时存在困难,应用于植入前诊断时容易造成误诊。 相似文献
5.
Aging increases, and duodenal ulcer reduces the risk for intestinal metaplasia of the gastric corpus in Japanese patients with dyspepsia 总被引:2,自引:0,他引:2
Tsukui T Kashiwagi R Sakane M Tabata F Akamatsu T Wada K Futagami S Miyake K Sueoka N Hirakawa T Kobayashi M Fujimori T Sakamoto C 《Journal of gastroenterology and hepatology》2001,16(1):15-21
BACKGROUND AND AIMS: The classification of gastritis by using the revised Sydney system suggests that there are two types of Helicobacter pylori-related gastritis. The aim of the present study was to examine the risk factors that might be involved in the presence of either atrophic gastritis or intestinal metaplasia of the gastric corpus of Japanese patients. METHODS: Biopsy samples were obtained from the gastric corpus in 154 patients with dyspepsia, and the degree of atrophy or intestinal metaplasia was determined histologically. The correlation between several variables and presence of atrophy or intestinal metaplasia was evaluated by using multivariate analysis. RESULTS: Among the 11 variables, which included age, peptic ulcer diseases and H. pylori infection, H. pylori infection was the major risk factor associated with the presence of atrophic gastritis or intestinal metaplasia of the gastric corpus. In contrast, duodenal ulcer (DU) disease reduced the risk of contracting both conditions. Age was an independent risk factor only for intestinal metaplasia of the gastric corpus. When 128 H. pylori-positive subjects were analyzed, DU and age were similarly associated with the presence of both conditions. CONCLUSIONS: These results suggest that DU reduces the risk for contracting atrophic gastritis and intestinal metaplasia, and age is an independent risk factor for intestinal metaplasia of the gastric corpus in dyspeptic Japanese patients. 相似文献
6.
Sato A Sueoka-Aragane N Saitoh J Komiya K Hisatomi T Tomimasu R Hayashi S Sueoka E 《Journal of cancer research and clinical oncology》2008,134(11):1191-1197
Purpose Development of an early detection marker is one of the most important strategies for improving overall prognosis in lung cancer
patients. We previously reported that hnRNP B1––an RNA binding protein––is overexpressed in lung cancer tissue from the early
stage of cancer, and found that hnRNP B1 mRNA is detectable in the plasma of lung cancer patients using real-time RT-PCR. The purpose of this study was to establish
a quick and simple method for detecting plasma hnRNP B1mRNA for use in screening for lung cancer.
Methods TRC, a homogenous method for fluorescence real-time monitoring of isothermal RNA amplification using intercalation activating
fluorescence DNA probe, was used to detect plasma hnRNP B1 mRNA.
Results The detection limit of hnRNP B1 mRNA by TRC using synthetic control RNA or total RNA derived from a lung cancer cell line was 25 or 8.65 × 102 copies, respectively. Using total RNA extracted from 600 μl of plasma, we detected hnRNP B1 mRNA in 39.1% (9/23) of lung cancer patients, with levels ranging from 1.9 to 19,045.5 copies/100 ng RNA, and in 5.2% (5/97)
of healthy volunteers. Copy numbers were not associated with age, gender, smoking status, or histological type of cancer.
TRC could detect 103 copies of hnRNP B1 mRNA in 10 min.
Conclusion Detection of plasma hnRNP B1 mRNA by TRC is a quick, easy, and non-invasive method suitable for lung cancer screening. 相似文献
7.
Preimplantation genetic diagnosis: an update on current technologies and ethical considerations
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Kou Sueoka 《Reproductive Medicine and Biology》2016,15(2):69-75
The aim of reproductive medicine is to support the birth of healthy children. Advances in assisted reproductive technologies and genetic analysis have led to the introduction of preimplantation genetic diagnosis (PGD) for embryos. Indications for PGD have been a major topic in the fields of ethics and law. Concerns vary by nation, religion, population, and segment, and the continued rapid development of new technologies. In contrast to the ethical augment, technology has been developing at an excessively rapid speed. The most significant recent technological development provides the ability to perform whole genome amplification and sequencing of single embryonic cells by microarray or next‐generation sequencing methods. As new affordable technologies are introduced, patients are presented with a growing variety of PGD options. Simultaneously, the ethical guidelines for the indications for testing and handling of genetic information must also rapidly correspond to the changes. 相似文献
8.
Yukihiko Nos Ken Yamaji Akinori Sueoka Shingo Yamane 《Therapeutic apheresis and dialysis : official peer-reviewed journal of the International Society for Apheresis, the Japanese Society for Apheresis, the Japanese Society for Dialysis Therapy》1997,1(1):5-12
Abstract: During the past 25 years, membrane apheresis technology has been well developed through the use of biocompatible devices and immunomodulation. Now, however, we must move into a new era reconsidering the concepts of apheresis technology and considering the urgent need to develop a bioincompatible apheresis system. In the past, our aim in this field was to develop the best blood compatible system possible. With these systems, best efforts were made to reduce procedurally induced immunomodulation effects. However, it is these authors' opinion that procedurally induced immunomodulation effects should be augmented rather than reduced by incorporating such a bioincompatible apheresis system. Augmented immunoactivation and immunosuppression introduced by such systems should add therapeutic effects to the apheresis procedures. Therefore, we anticipate that the current marginally effective diseases may benefit from this strategic change in apheresis procedures. 相似文献
9.
10.
Yasuo Fushimi Mitsuhiro Takagi Seiichi Uno Emiko Kokushi Masayuki Nakamura Hiroshi Hasunuma Urara Shinya Eisaburo Deguchi Johanna Fink-Gremmels 《Toxins》2014,6(11):3117-3128
This study aimed (1) at determining the levels of the fungal toxin sterigmatocystin (STC) in the feed and urine of cattle and (2) at evaluating the effects of supplementing the feed with a mycotoxin adsorbent (MA) on STC concentrations in urine. Two herds of female Japanese Black cattle were used in this study. The cattle in each herd were fed a standard ration containing rice straw from different sources and a standard concentrate; two groups of cattle from each herd (n = six per group) received the commercial MA, mixed with the concentrate or given as top-dressing, whereas a third group received no supplement and served as control. Urine and feed samples were collected at various time points throughout the experiment. STC concentrations were measured using liquid chromatography-tandem mass spectrometry (LC-TMS). STC concentrations in straw were higher in Herd 1 (range 0.15–0.24 mg/kg DM) than in Herd 2 (range <0.01–0.06 mg/kg DM). In Herd 1, STC concentrations in urine significantly declined 2 weeks after replacing the contaminated feed, whereas MA supplementation had no effect. In conclusion, mycotoxins in urine samples are useful biological markers for monitoring the systemic exposure of cattle to multiple mycotoxins, as well as evaluating the effectiveness of interventions. 相似文献