Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 237
Filter
1.
Adv Exp Med Biol ; 1395: 139-143, 2022.
Article in English | MEDLINE | ID: mdl-36527628

ABSTRACT

BACKGROUND: Recent studies reported that vascular cognitive impairment in the elderly caused by arteriosclerosis plays an important role in cognitive disorders in both vascular dementia and Alzheimer's disease. In addition, systemic metabolic disorders such as oxygen metabolism dysfunction could be risk of dementia. Based on these findings, we have developed a deep neural network-based screening test (DNN-based test) of cognitive function using basic blood test data, which allowed prediction of cognitive function expressed by Mini Mental State Examination (MMSE) scores. AIM: Here, we investigated whether the DNN-based test could be applicable to assessment of the effects of exercise-diet on cognitive function. METHODS: We studied the following two groups: (1) seven subjects of the local fitness gym (68.6 ± 3.2 years old). We evaluated cognitive function by the DNN-based test using blood data before and after the intervention (for 3 months). These results were compared with the measured MMSE score. (2) we studied a total of 230 subjects (67.9 ± 7.4 years old) who were members of the Tsuminory health class (Apple classroom). We assessed cognitive function by the DNN-based test before and after the intervention (for 2 months). We compared the predicted MMSE scores by the DNN-based test before and after the 2-month intervention. RESULTS: In the first group, the MMSE score predicted by the DNN-based test increased from 27.1 ± 0.8 to 27.6 ± 0.7 after the intervention period (p = 0.024). The measured MMSE score also increased after exercise, but not significant (P = 0.28). In the second group, the exercise-diet therapy increased the predicted MMSE scores in 189 cases (p < 0.001). In contrast, the therapy significantly reduced the mean MMSE score (p < 0.001). DISCUSSION: The MMSE score predicted by the DNN-based test were increased by exercise-diet therapy in most subjects. The DNN-based test may be useful to monitor the effect of exercise-diet therapy on cognitive function aged people.


Subject(s)
Cognitive Dysfunction , Deep Learning , Dementia , Aged , Humans , Middle Aged , Dementia/diagnosis , Cognition , Cognitive Dysfunction/diagnosis , Cognitive Dysfunction/complications , Exercise , Diet , Hematologic Tests/adverse effects , Neuropsychological Tests
2.
Adv Exp Med Biol ; 1269: 289-294, 2021.
Article in English | MEDLINE | ID: mdl-33966232

ABSTRACT

Continuous moderate-intensity aerobic exercise improves cognitive function including working memory (WM). We aimed to determine the differences in the effects of exercise on WM based on pre-exercise WM function and oxyhemoglobin (O2Hb) changes. We enrolled 12 healthy adult males who, after a 4-min rest and warm-up, performed a 20-min exercise regime at a workload corresponding to 50% of maximal oxygen consumption. They performed a pre- and postexercise two-back test, and the reaction times were recorded. Near-infrared spectroscopy was used to monitor the O2Hb concentration in the left prefrontal cortex during the exercise. Based on the pre-exercise reaction time, the subjects were allocated into either a fast group (FG) or a slow group (SG). The pre- and postexercise changes in the reaction time and time-to-peak O2Hb were compared. Further, we determined the relationship between the change in the reaction time and time-to-peak O2Hb. There was no significant change in the reaction time of the FG; however, that in the SG decreased significantly. The time-to-peak O2Hb in the FG was significantly less than that in the SG. These results showed differences in the changes of reaction time and O2Hb changes between the FG and SG.


Subject(s)
Memory, Short-Term , Oxyhemoglobins , Adult , Exercise , Humans , Male , Oxygen Consumption , Oxyhemoglobins/metabolism , Spectroscopy, Near-Infrared
3.
Sci Rep ; 11(1): 882, 2021 01 13.
Article in English | MEDLINE | ID: mdl-33441607

ABSTRACT

Tropane alkaloids and terpenoids are widely used in the medicine and pharmaceutic industry and evolved as chemical defenses against herbivores and pathogens in the annual herb Datura stramonium (Solanaceae). Here, we present the first draft genomes of two plants from contrasting environments of D. stramonium. Using these de novo assemblies, along with other previously published genomes from 11 Solanaceae species, we carried out comparative genomic analyses to provide insights on the genome evolution of D. stramonium within the Solanaceae family, and to elucidate adaptive genomic signatures to biotic and abiotic stresses in this plant. We also studied, in detail, the evolution of four genes of D. stramonium-Putrescine N-methyltransferase, Tropinone reductase I, Tropinone reductase II and Hyoscyamine-6S-dioxygenase-involved in the tropane alkaloid biosynthesis. Our analyses revealed that the genomes of D. stramonium show signatures of expansion, physicochemical divergence and/or positive selection on proteins related to the production of tropane alkaloids, terpenoids, and glycoalkaloids as well as on R defensive genes and other important proteins related with biotic and abiotic pressures such as defense against natural enemies and drought.


Subject(s)
Datura stramonium/genetics , Datura stramonium/metabolism , Plant Defense Against Herbivory/genetics , Alcohol Oxidoreductases/metabolism , Alkaloids/metabolism , Biological Evolution , Environment , Evolution, Molecular , Gene-Environment Interaction , Genomics/methods , Solanaceae/genetics , Solanaceae/metabolism , Tropanes/metabolism , Whole Genome Sequencing
4.
Adv Exp Med Biol ; 1232: 91-97, 2020.
Article in English | MEDLINE | ID: mdl-31893399

ABSTRACT

Vascular cognitive impairment (VCI) plays an important role in dementia in elderly people, and refers to the contribution of vascular pathology to the entire spectrum of cognitive disorders, ranging from mild cognitive impairment to severe dementia, as well as the pathological spectrum, from 'pure' Alzheimer disease through degrees of vascular comorbidity to 'pure' vascular dementia. In the present study, we investigated the relationship between cognitive dysfunction and systemic metabolic disorders, by employing deep learning (DL). We studied 202 patients (73.4 ± 13.0 years), 94.6% of whom were undergoing treatment for lifestyle diseases, and 68.8% of whom had a history of cerebrovascular disorder. We evaluated cognitive dysfunction by performing a Mini Mental State Examination (MMSE). We performed general blood examination, including Complete Blood Count and Basic Metabolic Panel, and measured cerebral blood oxygenation in the prefrontal cortex (PFC) using time-resolved near infrared spectroscopy (TNIRS). We then used deep neural networks to assess the MMSE scores of the subjects based on the TNIRS parameters and the blood examination data, independently. Next, we compared predicted MMSE scores based on the TNIRS and the blood examination. There was a significant positive correlation between the TNIRS parameters and the blood examination data (r = 0.6, p < 0.01). These observations suggest that cognitive dysfunction in patients with VCI may be caused by combinations of systemic metabolic disorders such as energy and oxygen metabolisms and cerebral circulatory disturbance due to arteriosclerosis resulting from lifestyle-related diseases.


Subject(s)
Cognitive Dysfunction , Dementia , Metabolic Diseases , Aged , Aged, 80 and over , Cognitive Dysfunction/complications , Dementia/complications , Dementia/physiopathology , Female , Humans , Male , Metabolic Diseases/complications , Middle Aged
5.
Transplant Proc ; 49(7): 1596-1603, 2017 Sep.
Article in English | MEDLINE | ID: mdl-28651806

ABSTRACT

BACKGROUND: Thrombotic microangiopathy (TMA) pathogenesis after living donor liver transplantation (LDLT) is thought to be caused by release of unusually large von Willebrand factor multimers (UL-vWFMs) resulting from sinusoidal endothelial cell damage and induction of platelet adhesion and aggregation. A decrease in a disintegrin-like and metalloproteinase with thrombospondin type 1 motifs-13 (ADAMTS-13) that cleave UL-vWFMs might cause excessive UL-vWFMs activity and result in platelet thrombus formation. However, this phenomenon has not undergone a full pathologic assessment. PROCEDURES: A 60-year-old man was diagnosed with hepatitis C-related end-stage cirrhosis. His son was the donor, and he underwent LDLT. On postoperative day 44, his laboratory findings met most TMA diagnostic criteria, and he was diagnosed with TMA-like disorder (TMALD). Localization of CD42b as a platelet marker, vWF, and ADAMTS-13 in allograft tissue of this patient were evaluated using immunohistochemistry. RESULTS: CD42b expression was observed as platelet aggregates attached to hepatocytes or within the hepatocyte cytoplasm, a morphology called extravasated platelet aggregation (EPA). vWF expression was observed mainly as deposited compact clusters, and ADAMTS-13 expression resembled distinct dots throughout the liver tissue. CONCLUSION: These findings suggest that EPA indicated sinusoidal endothelial cell damage followed by detachment, and vWF deposition resulted from UL-vWFM oversynthesis. ADAMTS-13 might be consumed in the allograft tissue to cleave UL-vWFMs, but ADAMTS-13 levels might be insufficient to cleave all the deposited UL-vWFMs. We present the case of an LDLT recipient diagnosed with TMALD using blood tests, which showed the presence of TMA pathogenesis in the allograft.


Subject(s)
ADAMTS13 Protein/metabolism , Liver Transplantation/adverse effects , Postoperative Complications/metabolism , Thrombotic Microangiopathies/metabolism , von Willebrand Factor/metabolism , Allografts/metabolism , Biomarkers/analysis , Blood Platelets , Humans , Liver/metabolism , Liver Transplantation/methods , Living Donors , Male , Middle Aged , Platelet Aggregation , Postoperative Complications/etiology , Thrombotic Microangiopathies/etiology
6.
J Anim Sci ; 94(10): 4133-4142, 2016 Oct.
Article in English | MEDLINE | ID: mdl-27898842

ABSTRACT

Meat quality is one of the most important traits determining carcass price in the Japanese beef market. Optimized breeding goals and management practices for the improvement of meat quality traits requires knowledge regarding any potential functional relationships between them. In this context, the objective of this research was to infer phenotypic causal networks involving beef marbling score (BMS), beef color score (BCL), firmness of beef (FIR), texture of beef (TEX), beef fat color score (BFS), and the ratio of MUFA to SFA (MUS) from 11,855 Japanese Black cattle. The inductive causation (IC) algorithm was implemented to search for causal links among these traits and was conditionally applied to their joint distribution on genetic effects. This information was obtained from the posterior distribution of the residual (co)variance matrix of a standard Bayesian multiple trait model (MTM). Apart from BFS, the IC algorithm implemented with 95% highest posterior density (HPD) intervals detected only undirected links among the traits. However, as a result of the application of 80% HPD intervals, more links were recovered and the undirected links were changed into directed ones, except between FIR and TEX. Therefore, 2 competing causal networks resulting from the IC algorithm, with either the arrow FIR → TEX or the arrow FIR ← TEX, were fitted using a structural equation model () to infer causal structure coefficients between the selected traits. Results indicated similar genetic and residual variances as well as genetic correlation estimates from both structural equation models. The genetic variances in BMS, FIR, and TEX from the structural equation models were smaller than those obtained from the MTM. In contrast, the variances in BCL, BFS, and MUS, which were not conditioned on any of the other traits in the causal structures, had no significant differences between the structural equation model and MTM. The structural coefficient for the path from MUS (BCL) to BMS showed that a 1-unit improvement in MUS (BCL) resulted in an increase of 0.85 or 1.45 (an decrease of 0.52 or 0.54) in BMS in the causal structures. The analysis revealed some interesting functional relationships, direct genetic effects, and the magnitude of the causal effects between these traits, for example, indicating that BMS would be affected by interventions on MUS and BCL. In addition, if interventions existed in this scenario, a breeding strategy based only on the MTM would lead to a mistaken selection for BMS.


Subject(s)
Cattle/genetics , Cattle/physiology , Red Meat , Algorithms , Animals , Bayes Theorem , Breeding , Genetic Variation , Male , Models, Genetic
7.
Eur Surg ; 48: 92-98, 2016.
Article in English | MEDLINE | ID: mdl-27110233

ABSTRACT

BACKGROUND: The exact sequence of events leading to ultimate hepatocellular damage following ischemia/reperfusion (I/R) is incompletely understood. In this article, we review a mechanism of organ dysfunction after hepatic I/R or immunosuppressive treatment, in addition to the potential of liver sinusoidal endothelial cell (LSEC) protection and antiplatelet treatment for the suppression of hepatocellular damage. METHODS: A review of the literature, utilizing PubMed-NCBI, was used to provide information on the components necessary for the development of hepatocellular damage following I/R. RESULTS: It is well-established that LSECs damage following hepatic I/R or immunosuppressive treatment followed by extravasated platelet aggregation (EPA) is the root cause of organ dysfunction in liver transplantation. We have classified three phases, from LSECs damage to organ dysfunction, utilizing the predicted pathogenic mechanism of sinusoidal obstruction syndrome. The first phase is detachment of LSECs and sinusoidal wall destruction after LSECs injury by hepatic I/R or immunosuppressive treatment. The second phase is EPA, accomplished by sinusoidal wall destruction. The various growth factors, including thromboxane A2, serotonin, transforming growth factor-beta and plasminogen activator inhibitor-1, released by EPA in the Disse's space of zone three, induce portal hypertension and the progression of hepatic fibrosis. The third phase is organ dysfunction following portal hypertension, hepatic fibrosis, and suppressed liver regeneration through various growth factors secreted by EPA. CONCLUSION: We suggest that EPA in the space of Disse, initiated by LSECs damage due to hepatic I/R or immunosuppressive treatment, and activated platelets may primarily contribute to liver damage in liver transplantation. Endothelial protective therapy or antiplatelet treatment may be useful in the treatment of hepatic I/R following EPA.

8.
Rev Sci Instrum ; 86(8): 084703, 2015 Aug.
Article in English | MEDLINE | ID: mdl-26329217

ABSTRACT

A compact and low power consumption instrument for measuring the electron density and temperature in the ionosphere has been developed by modifying the previously developed Electron Temperature Probe (ETP). A circuit block which controls frequency of the sinusoidal signal is added to the ETP so that the instrument can measure both T(e) in low frequency mode and N(e) in high frequency mode from the floating potential shift of the electrode. The floating potential shift shows a minimum at the upper hybrid resonance frequency (f(UHR)). The instrument which is named "TeNeP" can be used for tiny satellites which do not have enough conductive surface area for conventional DC Langmuir probe measurements. The instrument also eliminates the serious problems associated with the contamination of satellite surface as well as the sensor electrode.

9.
J Anim Sci ; 93(6): 2714-21, 2015 Jun.
Article in English | MEDLINE | ID: mdl-26115259

ABSTRACT

The objective of this paper was to estimate the genetic parameters of certain internal diseases (multifocal necrosis in the liver [MNL], bovine abdominal fat necrosis [BFN], and inflammation of the large intestine [ILI]) and to investigate relationships between the internal diseases and carcass traits (carcass weight [CW], rib eye area [REA], rib thickness [RT], subcutaneous fat thickness, and beef marbling score [BMS]). Records of the internal diseases and the carcass traits of 5,788 Japanese Black cattle were used for this study. The data for all the diseases were recorded as binary data as to whether the disease was observed (1) or not (0). Genetic parameters were estimated using linear and threshold animal models. The prevalence rates of MNL, BFN, and ILI were 16.1, 23.0, and 6.8%, respectively, and heritability estimates ± posterior SD were 0.18 ± 0.06, 0.28 ± 0.06, and 0.18 ± 0.06, respectively. The genetic correlations of MNL with BFN and ILI were -0.23 (P = 0.19) and -0.49 (P < 0.05), respectively. In contrast, the correlation between BFN and ILI was positive and high (0.96; < 0.05). The phenotypic correlations of the internal diseases with the carcass traits were weak and not different from 0 except for those of BFN and ILI with CW, REA, and RT, which were all negative (P < 0.05) and ranged from -0.21 (ILI and CW) to -0.05 (BFN and RT). The genetic correlations of MNL with the carcass traits were all weak and not significant. In contrast, the genetic correlations of BFN and ILI with CW, REA, and RT were all negative and significant (P < 0.05) between BFN and CW (-0.36) and between BFN and RT (-0.33). However, the genetic correlations for BFN and ILI with BMS were all positive at 0.21 P( = 0.16) and 0.39 (P < 0.05), respectively. The estimated heritability of the internal diseases suggests that they can be genetically improved. Genetic relationships of BFN and ILI with meat quantity traits were favorable for beef cattle breeding, because lower disease liabilities were associated with improved CW, REA, and RT for BFN and ILI. However, rather strong and unfavorable genetic relationships were found between BFN or ILI and BMS, which is related to meat quality. This suggests that selection for animals with superior BMS would increasingly lead to animals with higher liability to the internal diseases.


Subject(s)
Cattle Diseases/genetics , Cattle Diseases/pathology , Fat Necrosis/veterinary , Intestine, Large/pathology , Liver/pathology , Meat/standards , Phenotype , Abattoirs , Animals , Body Weight/genetics , Breeding/methods , Breeding/standards , Cattle , Fat Necrosis/genetics , Fat Necrosis/pathology , Inflammation/veterinary , Necrosis/veterinary
10.
Eur J Surg Oncol ; 41(10): 1354-60, 2015 Oct.
Article in English | MEDLINE | ID: mdl-26028256

ABSTRACT

BACKGROUND: Recent advances in gastric cancer chemotherapy have made macroscopic complete resection possible in some patients with stage IV disease. METHODS: We retrospectively investigated the efficacy of multimodal therapy with combined docetaxel, cisplatin, and S-1 (DCS) and conversion gastrectomy in 57 patients with stage IV gastric cancer. RESULTS: Of the 57 patients, 15 patients were categorized into potentially resectable case, which is defined as patients with single incurable factor including the upper abdominal para-aortic lymph node metastasis (16a2b1 PAN metastasis) or fewer than three peripheral liver metastases. The other 42 were categorized as initially unresectable. All of patients underwent DCS therapy, and then 34 patients underwent conversion gastrectomy. The 3-year overall survival (OS) rate among the patients who underwent conversion gastrectomy was 50.1% with MST of 29.9 months. They had significantly longer OS than patients who underwent DCS therapy alone (p < 0.01). Univariate analysis among the patents with conversion gastrectomy identified 16a2b1PAN metastasis, peritoneal metastasis, potential resectable case, R0 resection as significant prognostic factors. A 3-year OS in potential resectable cases was 92.9%. Multivariate analysis identified potential resectability as the only independent prognostic factor contributing to OS (HR 0.133, 95%CI 0.024-0. 744, p = 0.021). In contrast, clinical response was selected as the only independent prognostic factor in the subgroup of initially unresectable cases (HR 0.354, 95%CI 0.151-0.783, p = 0.021). CONCLUSION: Patients with potentially resectable disease had a remarkably good prognosis among stage IV gastric cancer patients, and might be ideal candidates for conversion gastrectomy following DCS therapy.


Subject(s)
Adenocarcinoma/drug therapy , Adenocarcinoma/surgery , Gastrectomy , Lymph Nodes/pathology , Stomach Neoplasms/drug therapy , Stomach Neoplasms/surgery , Adenocarcinoma/pathology , Adenocarcinoma/secondary , Adult , Aged , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Aorta , Cisplatin/administration & dosage , Cohort Studies , Docetaxel , Drug Combinations , Female , Humans , Liver Neoplasms/secondary , Male , Middle Aged , Neoadjuvant Therapy , Neoplasm Staging , Oxonic Acid/administration & dosage , Retrospective Studies , Stomach Neoplasms/pathology , Taxoids/administration & dosage , Tegafur/administration & dosage , Treatment Outcome
11.
Transplant Proc ; 46(10): 3523-35, 2014 Dec.
Article in English | MEDLINE | ID: mdl-25498084

ABSTRACT

Veno-occlusive disease/sinusoidal obstruction syndrome (VOD/SOS) occurring after liver transplantation is a relatively rare complication but it often takes a life-threatening course. However, the detailed etiology and mechanism of VOD/SOS after liver transplantation (LT) remains unclear. We report two cases with rapidly progressive VOD/SOS after ABO-identical LT resistant to various therapies. In case 1, in which the patient underwent deceased-donor LT, the first episode of acute allograft rejection was triggered VOD/SOS, and the presence of donor non-specific anti-HLA antibodies was confirmed. The recipient died with graft failure on day 46 after transplantation. Case 2, in which the patient underwent living-donor LT from the mother, had neither rejection nor mechanical venous obstruction, but condition of the patient rapidly worsened and he died on day 13 after transplantation. This recipient's direct cross-match test for the donor's B lymphocyte was strongly positive, but that for T lymphocyte was negative. In both cases, neither stenosis of hepatic vein outflow tract nor C4d deposition in post-transplantation liver biopsy specimens and autopsy specimen was found. On the other hand, in both cases, the patient was transfusion unresponsive thrombocytopenia and hyperbilirubinemia persisted postoperatively, and glycoprotein Ⅰ bα was strongly stained in the neighboring centrilobular area (zone 3), especially in the space of Disse, and platelet phagocytosis was observed in Kupffer cells and hepatocytes around zone 3 such as clinical xenotransplantation of the liver in post-transplantation liver biopsy specimens. From the viewpoint of graft injury, VOD/SOS was considered that sustained sinusoidal endothelial cells injury resulted in bleeding in the space of Disse and led to around centrilobular hemorrhagic necrosis, and the fundamental cause was damage around centrilobular area including sinusoid by acute cellular rejection, antibody-mediated rejection or ischemic reperfusion injury. The extrasinusoidal platelet activation, aggregation, and phagocytosis of platelets were some of the main reasons for VOD/SOS and transfusion-resistant thrombocytopenia.


Subject(s)
Graft Rejection/complications , Hepatic Veno-Occlusive Disease/etiology , Liver Transplantation/adverse effects , Tissue Donors , Adult , Biopsy , Female , Graft Rejection/diagnosis , Hepatic Veno-Occlusive Disease/diagnosis , Humans , Male , Severity of Illness Index , Transplantation, Homologous
12.
Rev Sci Instrum ; 85(1): 015104, 2014 Jan.
Article in English | MEDLINE | ID: mdl-24517809

ABSTRACT

The electrode contamination in electrostatic analyzers such as Langmuir probes and retarding potential analyzers (RPA) is a serious problem for space measurements. The contamination layer acts as extra capacitance and resistance and leads to distortion in the measured I-V curve, which leads to erroneous measurement results. There are two main effects of the contamination layer: one is the impedance effect and the other is the charge attachment and accumulation due to the capacitance. The impedance effect can be reduced or eliminated by choosing the proper sweeping frequency. However, for RPA the charge accumulation effect becomes serious because the capacitance of the contamination layer is much larger than that of the Langmuir probe of similar dimension. The charge accumulation on the retarding potential grid causes the effective potential, that ions experience, to be changed from the applied voltage. Then, the number of ions that can pass through the retarding potential grid to reach the collector and, thus, the measured ion current are changed. This effect causes the measured ion drift velocity and ion temperature to be changed from the actual values. The error caused by the RPA electrode contamination is expected to be significant for sounding rocket measurements with low rocket velocity (1-2 km/s) and low ion temperature of 200-300 K in the height range of 100-300 km. In this paper we discuss the effects associated with the RPA contaminated electrodes based on theoretical analysis and experiments performed in a space plasma operation chamber. Finally, the development of a contamination-free RPA for sounding rocket missions is presented.

13.
Dis Esophagus ; 27(2): 159-67, 2014.
Article in English | MEDLINE | ID: mdl-23551804

ABSTRACT

The aim of this study was to estimate the technical and oncologic feasibility of video-assisted thoracoscopic radical esophagectomy (VATS) in the left lateral position. From January 2003 to December 2011, 132 patients with esophageal cancer underwent VATS. The mean duration of the thoracic procedure and the entire procedure was 294 ± 88 and 623 ± 123 minutes, respectively. Mean blood loss during the thoracic procedure and the entire procedure was 313 ± 577 and 657 ± 719 g, respectively. The mean number of dissected thoracic lymph nodes was 32.6 ± 12.9. There were four in-hospital deaths (3.0%); two patients (1.5%) died of acute respiratory distress syndrome and two patients (1.5%) died of tumor progression. Postoperative unilateral or bilateral recurrent laryngeal nerve (RLN) palsy, or pneumonia was found in 33 (25.0%), 21 (15.9%), and 27(20.5%) patients, respectively. The patients were divided into the first 66 patients who underwent VATS (Group 1) and the subsequent 66 patients (Group 2). The numbers of cases who underwent neoadjuvant or induction chemotherapy for T4 tumor and intrathoracic anastomosis were higher in Group 2 than in Group 1. The duration of the procedure, amount of blood loss, and the number of dissected thoracic lymph nodes were not different between the two groups. The total number of dissected lymph nodes was higher in Group 2 than in Group 1 (72.6 ± 27.8 vs. 62.6 ± 21.6, P = 0.023). The rate of bilateral RLN palsy was less in Group 2 than in Group 1 (7.6% vs. 24.2%, P = 0.042). The mean follow-up period was 38.7 months. Primary recurrence consisted of hematogenous, lymphatic, peritoneal dissemination, pleural dissemination, and locoregional in 15 (11.3%), 20 (15.1%), 3 (2.3%), 4 (3.0%), and 5 patients (3.8%), respectively. The rate of regional lymph node recurrence within the dissection field was only 4.5%. The prognosis of patients with lymph node metastasis was significantly poorer than that of patients without lymph node metastasis. However, the prognosis of the 11 cases that had metastasis only around RLNs was similar to that of node-negative cases. Thirteen patients with pathological remnant tumor (R1 or R2) did not survive longer than 5 years at present. The overall 5-year survival rate of stage I, II, and III disease after curative VATS was 82.2%, 77.0%, and 52.3%, respectively. Expansion of VATS criteria for patients after induction chemotherapy for T4 tumor or thoracoscopic anastomosis did not adversely affect the surgical results by experience. Although the VATS procedure is accompanied by a certain degree of morbidity including RLN palsy and pulmonary complications, VATS has an excellent locoregional control effect. In addition, the favorable survival after VATS shows that the procedure is oncologically feasible.


Subject(s)
Esophageal Neoplasms/surgery , Esophagectomy/methods , Lymph Node Excision/methods , Patient Positioning/methods , Thoracic Surgery, Video-Assisted/methods , Adenocarcinoma/pathology , Adenocarcinoma/surgery , Aged , Carcinoma, Small Cell/pathology , Carcinoma, Small Cell/surgery , Carcinoma, Squamous Cell/pathology , Carcinoma, Squamous Cell/surgery , Carcinosarcoma/pathology , Carcinosarcoma/surgery , Cohort Studies , Esophageal Neoplasms/pathology , Feasibility Studies , Female , Humans , Lymph Nodes/pathology , Male , Middle Aged
14.
Cancer Chemother Pharmacol ; 71(5): 1265-72, 2013 May.
Article in English | MEDLINE | ID: mdl-23423490

ABSTRACT

PURPOSE: We designed a phase I/II trial of intraperitoneal (IP) docetaxel plus S-1 to determine the maximum tolerated dose (MTD) and recommended dose (RD) and to evaluate its efficacy and safety in gastric cancer patients with peritoneal carcinomatosis (PC). METHODS: Patients with PC confirmed by laparoscopy or laparotomy received IP docetaxel on days 1 and 15 and S-1 (80 mg/m(2)) on days 1-14 every 4 weeks. RESULTS: In the phase I part (n = 12), each cohort received escalating doses of docetaxel (35-50 mg/m(2)); the MTD was determined to be 50 mg/m(2) and the RD was determined to be 45 mg/m(2). Dose-limiting toxicities included grade 3 febrile neutropenia and grade 3 diarrhea. In the phase II part (n = 27), the median number of courses was 4 (range 2-11). The 1-year overall survival (OS) rate was 70 % (95 % confidence interval 53-87 %). The overall response rate was 22 % and peritoneal cytology turned negative in 18 of 22 (81 %) patients. The most frequent grade 3/4 toxicities included anorexia (19 %), neutropenia (7 %), and leukopenia (7 %). CONCLUSION: IP docetaxel plus S-1 is active and safety in gastric cancer patients with PC.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Peritoneal Neoplasms/drug therapy , Stomach Neoplasms/drug therapy , Adult , Aged , Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Docetaxel , Dose-Response Relationship, Drug , Drug Combinations , Female , Humans , Male , Maximum Tolerated Dose , Middle Aged , Oxonic Acid/administration & dosage , Peritoneal Neoplasms/secondary , Stomach Neoplasms/pathology , Survival Rate , Taxoids/administration & dosage , Tegafur/administration & dosage , Treatment Outcome
16.
Rev Sci Instrum ; 83(5): 055113, 2012 May.
Article in English | MEDLINE | ID: mdl-22667663

ABSTRACT

Precaution to remove the serious effect of electrode contamination in Langmuir probe experiments has not been taken in many space measurements because the effect is either not understood or ignored. We stress here that one should pay extra attention to the electrode contamination effect to get accurate and reliable plasma measurements so that the long time effort for sounding rocket/satellite missions does not end in vain or becomes less fruitful. In this paper, we describe two main features of voltage-current characteristic curves associated with the contaminated Langmuir probe, which are predicted from the equivalent circuit model, which we proposed in 1970's. We then show that fast sweeping dc Langmuir probes can give reliable results in the steady state regime. The fast sweeping probe can also give reliable results in transient situations such as satellite moves through plasma bubble in the ionosphere where the electron density drastically changes. This fact was first confirmed in our laboratory experiment.

17.
Clin Exp Dermatol ; 37(3): 241-4, 2012 Apr.
Article in English | MEDLINE | ID: mdl-22007878

ABSTRACT

Reiter disease (RD) is characterized by a triad of sterile arthritis, urethritis and conjunctivitis. The conditions occur concomitantly or sequentially, and are associated with mucocutaneous features such as circinate balanitis and stomatitis. Arthritis usually occurs in attacks followed by recovery, but it sometimes progresses to permanent damage of the affected joints. Because the symptoms of this disorder are attributable to activated neutrophils, we assessed the efficacy of granulocyte and monocyte adsorption apheresis (GCAP) in a 73-year-old man with RD who had skin rashes on his penis, scrotum and right hand, with severe arthralgia. The patient's skin rash and joint pain responded dramatically to five sessions of GCAP delivered at intervals of 5 days. We present a detailed description of the patient and discuss the mechanisms of GCAP, and suggest that GCAP may be useful for treating RD.


Subject(s)
Arthritis, Reactive/therapy , Genital Diseases, Male/therapy , Leukapheresis/methods , Skin Diseases, Papulosquamous/therapy , Adsorption , Aged , Genital Diseases, Male/etiology , Humans , Male , Skin Diseases, Papulosquamous/etiology , Treatment Outcome
18.
Rev Sci Instrum ; 82(7): 074501, 2011 Jul.
Article in English | MEDLINE | ID: mdl-21806205

ABSTRACT

It is commonly believed that an energy transfer from thermal to suprathermal electrons (

19.
Sex Dev ; 5(4): 205-12, 2011.
Article in English | MEDLINE | ID: mdl-21791950

ABSTRACT

We have analyzed the function of LGR4 in the development of various mouse epithelial tissues. Here we first report the retarded invasion of mammary ducts into the fat pad observed in Lgr4(K5 KO) mice at 4 weeks, compared with that of age-matched Lgr4(K5 ctrl). Furthermore, we demonstrate a significant decrease in mammary ductal branching in Lgr4(K5 KO) at several stages (4, 6 and 8 weeks). On the other hand, immunohistochemical analysis of the mammary gland of Lgr4(K5 KO) using anti-αSMA, anti-K18 and anti-laminin antibodies showed structures similar to those of Lgr4(K5 ctrl) mammary glands. In addition, we did not detect significant differences in the expression of ERα, which was suggested to be a downstream molecule of LGR4, and Lgr4(K5 KO) showed no retarded invasion in the response to 17ß-estradiol administration. Furthermore, the phosphorylated form of Smad1/5/8 was normally detected in the mammary gland of Lgr4(K5 KO).


Subject(s)
Mammary Glands, Animal/growth & development , Morphogenesis/physiology , Receptors, G-Protein-Coupled/physiology , Aging , Animals , Epithelial Cells/chemistry , Estrogen Receptor alpha/analysis , Female , Mammary Glands, Animal/anatomy & histology , Mice , Mice, Knockout , Ovariectomy , Receptors, G-Protein-Coupled/deficiency , Receptors, G-Protein-Coupled/genetics , Reverse Transcriptase Polymerase Chain Reaction
20.
Kyobu Geka ; 64(4): 275-9, 2011 Apr.
Article in Japanese | MEDLINE | ID: mdl-21491720

ABSTRACT

BACKGROUND: Pneumothorax in middle-aged and elderly patients has various different features from young patients. We set out to investigate the outcome and usefulness of video-assisted thoracic surgery (VATS) in this group. PATIENTS AND METHODS: From January 1993 to August 2010, 168 patients underwent a total of 178 thoracoscopic surgeries. There were 160 men and 8 women with mean age of 67 (range, 50 to 85). The average duration of thoracic drainage before surgery was 7.4 days. We excised only responsible lesions as minimum degree of dissection as possible. When patients have intractable air leakage and chest computed tomography (CT) indicates severe pleural adhesions, pleurography should be performed to locate the site of air leakage and determine surgical approaches. One hundred and seventy patients were treated with the lateral approach, while 8 patients were successfully treated with the anterior approach. One hundred and fifty-one patients were treated with VATS alone, and 27 patients were treated with the combination of VATS and small thoracotomy. The duration of chest tube drainage, hospital stay, post-operative complication, outcome and recurrence were assessed. RESULTS: The air leakages stopped and all patients except for 2 patents were discharged without drainage tubes. Postoperative drainage time was 4.5 +/- 3.4 days. Postoperative hospital stay was 9.9 +/- 13.9 days. One patient died caused by perioperative myocardial infarction. Seventeen patients died of other diseases. Seven patients needed local hospital treatments and the recurrence rate was 3.9%. CONCLUSION: VATS for pneumothorax in patients over 50 years old is very useful by appropriate perioperative managements.


Subject(s)
Pneumothorax/surgery , Thoracic Surgery, Video-Assisted , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Thoracic Surgery, Video-Assisted/methods , Thoracotomy , Treatment Outcome
SELECTION OF CITATIONS
SEARCH DETAIL
...