Recent Naturalization of Tragopogon species (Asteraceae) In Kami-ina Region of Nagano Prefecture

近年，長野県上伊那地方では，バラモンギク属植物（キク科）の帰化が急速に目立つようになった。そこで本研究では，バラモンギク属植物が帰化・定着したとみられる上伊那地方4 地点（辰野，箕輪，南箕輪，伊那）において植生調査を行い，種の同定を行うとともに，開花・結実の状況や群落の種組成の把握を試みた。その結果，4 地点で確認されたのは，フトエバラモンギク（Tragopogon dubius）1種のみであった。いずれの地点でも開花・結実が認められ，細い根出葉を叢生する越冬期の草型も確認された。生育地は開けた裸地（路傍）や緑化された斜面に発達した草本群落（土手や河川堤防）であった。出現種数に占める帰化植物種数の割合は42～68％と高く，最も早期に帰化の見られた地点（辰野）から離れるほどこの割合は高くなる傾向にあった。起源地は不明ながら，本種の種子は大きな冠毛を有するため，風による種子散布で侵入してきたものと推測される。Article環境科学年報 41:7-13(2019)journal articl

LASER SPECTROSCOPIC STUDY ON PHENOL-ETHYLDIMETHYLSILANE DIHYDROGEN-BONDED CLUSTER

Dihydrogen bond is a hydrogen bond which acts between two H atoms having opposite partial charges. Among various kinds of dihydrogen bond systems, we have been investigating the Si-H$\cdots$H-O type dihydrogen bond\footnote{H.~Ishikawa, A.~Saito, M.~Sugiyama, N.~Mikami, \textit{J. Chem. Phys.} \textbf{123}, 224309 (2005).}\footnote{H.~Ishikawa, T.~Kawasaki, R.~Inomata, \textit{J. Phys. Chem. A} \textbf{119}, 601 (2015).}. On the course of our study, we found that the competition between the dihydrogen bond and dispersion interactions determines the structures of phenol-alkylsilane 1:1 dihydrogen-bonded clusters. However, since there are many isomers due to intermolecular orientation as well as conformation of alkyl groups, we have not yet determined their structures completely. In the present study, we have carried out a laser spectroscopic study on the phenol-ethyldimetylsilane (PhOH-EDMS) dihydrogen bonded clusters. Since EDMS has a simple structure, the number of the isomers is expected to be small. We recorded laser-induced fluorescence (LIF), UV-UV hole-burning, and IR spectra of jet-cooled PhOH-EDMS clusters. As a result, we identified two isomers, A and B, based on the UV-UV hole-burning spectra. The 0-0 band of the isomer A is redshifted by $-83.3\,{\rm cm^{-1}}$ compared with that of the PhOH monomer and exhibits a simple and long progression of 16.6\, cm$^{-1}$ interval of the intermolecular vibration. On the other hand, the redshift of the 0-0 band of the isomer B is much smaller ($-20.3\,{\rm cm^{-1}}$) and exhibits rather congested band patterns. The redshifts of the OH stretching band of these isomers are -27 and -20\,cm$^{-1}$ for the isomers A and B, respectively. Based on the comparison of spectral features observed with those predicted by the DFT calculations, we determined the structure of the isomers A and B. Details will be presented in the paper

Difference in Serum Levels of Vitamin D Between Canalolithiasis and Cupulolithiasis of the Horizontal Semicircular Canal in Benign Paroxysmal Positional Vertigo

Background and Purpose: In the horizontal canal benign paroxysmal positional vertigo (BPPV), cupulolithiasis shows apogeotropic direction changing nystagmus lasting more than 1 min, while canalolithiasis leads to geotropic direction changing nystagmus lasting < 1 min. The difference between cupulolithiasis and canalolithiasis is widely accepted to be the attachment of the displaced otoconia to the cupula of a semicircular canal. Several studies have shown a relationship between BPPV and vitamin D deficiency, but no studies have compared serum levels of vitamin D between canalolithiasis and cupulolithiasis patients. The purpose of this study was to clarify the difference in vitamin D serum level between canalolithiasis and cupulolithiasis of the horizontal canal.Methods: This retrospective study included 20 and 15 patients with canalolithiasis and cupulolithiasis of the horizontal canal, respectively. Serum levels of 25-hydroxyvitamin D [25(OH)D] during the acute phase of BPPV were measured.Results: The mean 25(OH)D serum level in patients with canalolithiasis and cupulolithiasis was 13.2 ± 1.4 and 20.4 ± 1.6 ng/mL, respectively, and the difference was statistically significant (p = 0.0014), also after adjusting for age and sex (p = 0.0351). Eighteen out of 20 (90%) and 5 of 15 (33%) patients were diagnosed with vitamin D deficiency in the canalolithiasis and cupulolithiasis groups, respectively, and this difference was also statistically significant (p = 0.0005).Conclusion: We found that serum vitamin D level in patients with canalolithiasis was significantly lower than that in patients with cupulolithiasis of the horizontal canal

Inferior Vena Caval Thrombosis After Traumatic Liver Injury

We report here the case of a 35-year-old man who presented with inferior vena cava thrombosis (IVCT) after blunt hepatic trauma. The IVCT was incidentally detected by computed tomography (CT) 35 days after deep parenchymal suturing and suture approximation for liver lacerations. The patient denied any symptoms of thrombophlebitis. However, he had presented with significantly elevated values of FDP-D-dimer and a modest increase in plasminogen concentration, which indicated that he had been in a hypercoagulable and hypofibrinolytic state after the operation. He had not undergone any prophylactic anticoagulant therapy because of his concomitant subarachnoid hemorrhage and huge hepatic hematoma. The patient was treated with an emercy thrombectomy. Posttraumatic IVCT is extremely rare phenomenon. We should consider IVCT in patients with a severe hepatic injury, particularly if their coagulation system change into hypercoagulable and hypofibrinolytic state. Additionally, this case made us reflect on the treatment of traumatic liver injury

<ORIGINAL ARTICLE>The effects of sagittal ramus osteotomy for mandibular prognathism on maximum mouth opening and condylar movement

Maximum mouth opening and condylar movement before and more than 6 months after surgery were analyzed in 23 cases of sagittal ramus osteotomy of the mandible for correction of mandibular prognathism. Condylar movement (translation and rotation) did not show postoperatively a significant difference pre-and postoperatively, and then was a tendency to a reduction of maximum mouth opening was found

Repeated Hepatic Dearterialization for Unresectable Liver Metastases From Gastric Cancer: Review of Five Cases

A novel method of repeated hepatic dearterialization was evaluated in five patients with multiple metastases from gastric cancer in both hepatic lobes. After gastrectomy with extensive lymph node dissection (R2/3), all patients underwent implantation of a vascular occluder around the hepatic artery. Cannulation of the hepatic artery was added for later chemotherapy. The hepatic artery was occluded repeatedly for 1 hour twice daily in combination with intrahepatic infusion of anticancer drugs for as long as possible. Three of five patients demonstrated marked tumour regression with unexpectedly long survival (16 months in two patients and one still alive at 15 months). Carcinoembryonic antigen (CEA) levels decreased to almost normal in four patients who had initially high levels. The present experiences seems to indicate that long survival can be hoped for in patients with advanced gastric cancer with unresectable liver metastases

Angioscopic Evaluation of Stabilizing Effects of Bezafibrate on Coronary Plaques in Patients With Coronary Artery Disease

Background Since long-term administrations of anti-hyperlipidemic agents result in reduction in % stenosis or increase in minimum lumen diameter (MLD) of stenotic coronary segments, it is generally believed that anti-hyperlipidemic agents stabilize vulnerable coronary plaques. However, recent pathologic and angioscopic studies revealed that vulnerability of coronary plaques is not related to severity of stenosis and the rims rather than top of the plaques disrupt, and therefore, angiography is not adequate for evaluation of vulnerability

下顎犬歯236歯の根管形態についての検討

To achieve the effect of mechanical preparation of root canals, transparent specimens of extracted 236 mandibular canines were investigated for canal configuration, thickness and curvature of the root canal, condition of any accessory canals, and location of the apical foramen. Fewer than 25% of the specimens showed accessory canals that were impossible to clean mechanically. The majority of the lateral branches were 0.15mm<and≦0.20mm. Although apical foramina located away from the apex were observed in 18% of the mandibular canines. All apical foramina were located within 0.5mm of the apex. Data on the thickness of the root and main canal in the apical portion and curvature of the root canal suggest that for adequate apical preparation, a #60 file must be able to reach the apical constriction

Regulatory T Cells in Type 1 Autoimmune Pancreatitis

Autoimmune pancreatitis (AIP) is a newly recognized pancreatic disorder. Recently, International Consensus Diagnostic Criteria for AIP (ICDC) was published. In this ICDC, AIP was classified into Type 1 and Type 2. Patients with Type 1 AIP have several immunologic and histologic abnormalities specific to the disease, including increased levels of serum IgG4 and storiform fibrosis with infiltration of lymphocytes and IgG4-positive plasmacytes in the involved organs. Among the involved organs showing extrapancreatic lesions, the bile duct is the most common, exhibiting sclerosing cholangitis (IgG4-SC). However, the role of IgG4 is unclear. Recently, it has been reported that regulatory T cells (Tregs) are involved in both the development of various autoimmune diseases and the shift of B cells toward IgG4, producing plasmacytes. Our study showed that Tregs were increased in the pancreas with Type 1 AIP and IgG4-SC compared with control. In the patients with Type 1 AIP and IgG4-SC, the numbers of infiltrated Tregs were significantly positively correlated with IgG4-positive plasma cells. In Type 1 AIP, inducible costimulatory molecule (ICOS)+ and IL-10+ Tregs significantly increased compared with control groups. Our data suggest that increased quantities of ICOS+ Tregs may influence IgG4 production via IL-10 in Type 1 AIP