オランダ領東インドにおける華人の経済活動 : 1900-1930年のスマランを中心に

学位の種別: 課程博士審査委員会委員 : （主査）東京大学准教授 島田 竜登, 東京大学教授 水島 司, 東京大学准教授 吉澤 誠一郎, 東京大学名誉教授 加納 啓良, 立教大学教授 弘末 雅士University of Tokyo(東京大学

Down regulation by a low-zinc diet in gene expression of rat prostatic thymidylate synthase and thymidine kinase

<p>Abstract</p> <p>Background</p> <p>Zinc has a wide spectrum of biological activities and its deficiency is related to various abnormalities of cell metabolism.</p> <p>Methods</p> <p>Wistar male rats, at age of 4 weeks, were fed a low-zinc diet for six weeks. The levels of bromodeoxyuridine incorporated into the prostatic DNA and the mRNA expression levels of prostate thymidylate synthase and thymidine kinase were examined.</p> <p>Result</p> <p>The low-zinc diet caused a marked reduction in the body growth and organ weights, resulted in a low hematopoiesis, hypo-albuminemia and hypocholesterolemia. Although there were few differences in plasma biochemical markers, plasma levels of luteinizing hormone and testosterone were reduced by the low-zinc diet. Bromodeoxyuridine-immunoreactive (S-phase) cells and mRNA expression levels of thymidylate synthase and thymidine kinase in the prostate cells were markedly affected by the low-zinc diet.</p> <p>Conclusion</p> <p>A low-zinc diet appears to reduce the body growth and organ weights including prostate, causing low plasma levels of luteinizing hormone and testosterone and reduction in prostate DNA replication in growing-rats.</p

Prenatal and Peripartum Management of Patients with Hypofibrinogenemia Resulted in Two Successful Deliveries

Fibrinogen is an essential agent involved in maintaining pregnancy and coagulation. Since inherited fibrinogen disorders introduce greater risks for conditions such as placental abruption and postpartum hemorrhage, careful prenatal and perinatal management is essential for this patient population. We report two cases of successful deliveries in patients with hypofibrinogenemia. Case 1 is of a 26-year-old (gravida 1, para 1) woman. The patient’s fibrinogen level increased spontaneously to higher than 300 mg/dL during pregnancy, without treatment. She delivered at week 38 of gestation, with no complications. Case 2 is of a 30-year-old (gravida 3, para 1) woman. We performed repeated infusions of fibrinogen to maintain the level higher than 100 mg/dL during pregnancy and at least 200 mg/dL in the perioperative period; the patient delivered a healthy infant. We identified a new mutation, Hiroshima I (γ278Tyr→His). It is important to maintain appropriate fibrinogen levels in cases of inherited fibrinogen disorders for successful prenatal and peripartum management

subacute combined spinal cord degeneration

We report a case of subacute combined spinal cord degeneration (SCD) caused by vegetarianism and autoimmune gastritis, which is rarely reported in Japan, and which showed improvement in symptoms and imaging findings after vitamin B12 administration. As delayed treatment can lead to irreversible damage, we suggest that patients with characteristic abnormal signals in the posterior cervical cord should be examined while considering the possibility that SCD may occur even in the absence of a history of gastrectomy or heavy drinking. We also describe the patient’s reversible abnormal signals in the cerebral white matter on magnetic resonance imaging, indicative of an early sign of leukoencephalopathy associated with vitamin B12 deficiency

Rate capability of lithium intercalation into nano-porous graphitized carbons

Nano-porous graphitized carbons were successfully prepared by using mono-dispersed SiO2 colloidal crystal as a template and mesophase pitch as a carbon source with final heat treatment temperatures (HTT) of 1000?2500 °C. Rate capability of lithium intercalation/de-intercalation of the nano-porous graphitized carbons was investigated. 35?60% of capacities were retained when the current density was increased from 37.2 mA g? 1 to 372 mA g? 1. Electrochemical impedance spectra indicated that formation of SEI layers caused increased polarization

Specific gene expression in unmyelinated dorsal root ganglion neurons in nonhuman primates by intra-nerve injection of AAV 6 vector

霊長類においてウイルスベクターを用いた痛覚神経への遺伝子導入に成功 --神経障害性疼痛治療への応用に期待--. 京都大学プレスリリース. 2021-08-12.Adeno-associated virus 6 has been proposed as a potential vector candidate for specific gene expression in pain-related dorsal root ganglion neurons, but this has not been confirmed in nonhuman primates. The aim of our study was to analyze the transduction efficiency and target specificity of this viral vector in the common marmoset by comparing with those in the rat. When green fluorescent protein-expressing serotype-6 vector was injected into the sciatic nerve, the efficiency of gene expression in dorsal root ganglion neurons was comparable in both species. We found that the serotype-6 vector was largely specific to the pain-related ganglion neurons in the marmoset as well as in the rat, whereas the serotype-9 vector resulted in contrasting effects in the two species. Neither AAV6 nor AAV9 resulted in DRG toxicity when administered via the sciatic nerve, suggesting this as a safer route of sensory nerve transduction than the currently used intrathecal or intravenous administrative routes. Furthermore, the adeno-associated virus 6 vector could be an optimal serotype for gene therapy for human chronic pain that has minimal effect on other somatosensory functions of dorsal root ganglion neurons

Detection and Typing of Genital High-Risk HPV DNAs in Cervical Scrapes Using the E6E7-Specific Consensus PCR

Specific types of human papillomaviruses (HPVs) are closely associated with the development of genital carcinomas. We previousy reported a PCR method which amplifies the E6E7 sequence from 6 different high-risk genital HPVs (HPV16, 18, 31, 33, 52 and 58) (J Gen Virol 1991, 72 : 1039-1044.). To amplify broader types of genital high-risk HPVs, we have modified our consensus primers by extending 9 nucleotides at the 3 end of the sense primer and changing 5 nucleotides at the 5 end of the anitisense primer. Genotype diag-nosis was carried out by AvaII plus Rsal digestion. This modified PCR method enabled the detection of trace levels of at least 11 types of genital high-risk HPVs (HPV16, 18, 31, 33, 35, 39, 45, 51, 52, 56 and 58), at subpicogram to sub-nanogram amounts of cloned DNA, amplified after the consensus PCR. We applied this method to analyze 155 cervical scrapes from patients who had been diagnosed with premalignant or malignant cervical lesions. HPVs were detected in 63.0% of mild dysplasia (17/27), 100% of moderate dysplasia (all 12 cases), 91.7% of severe dysplasia (11/12), 95.8% of carcinoma in situ (23/24), and 80.0% of invasive cervical cancer (52/65). HPV16 was present predominant-ly (60.9%), followed by HPV58 (153%), HPV52 (13.9%), HPV31 (13.0%), HPV18 (6.1%), HPV35 (2.6%), HPV51 (2.6%), HPV56 (2.6%), HPV33 (1.7%) and HPV39 (1.7%). Five cases contained unclassified types (4.3%). The results indicate that this modified E6E7 consensus PCR method provides a quick and easy way to detect and diagnose genotypes of the high-risk genital HPVs from scraped cells