1.A DIGE PROTEOMIC ANALYSIS FOR LOW-INTENSITY EXERCISE-TRAINED RAT SKELETAL MUSCLE
WATARU YAMAGUCHI ; ERI FUJIMOTO ; MITSURU HIGUCHI ; IZUMI TABATA
Japanese Journal of Physical Fitness and Sports Medicine 2011;60(5):511-518
Background: Exercise training induces various adaptations in skeletal muscles. However, the mechanisms remain unclear. Purpose: Therefore, we conducted 2D-DIGE proteomic analysis, which has not yet been used for elucidating adaptations of skeletal muscle after low-intensity exercise training (LIT). Methods: For five days, rats performed LIT, which consisted of two 3-h swimming exercise with45-m rest between the exercise bouts. 2D-DIGE analysis was conducted on epitrochlearis muscles excised eighteen hours after the final training exercise. Results: Proteomic profiling revealed that, out of 681 detected and matched spots, 22 proteins exhibited changed expression by LIT compared with sedentary rats. All proteins were identified by MALDI-TOF/MS. Conclusion: The proteomic 2D-DIGE analysis following LIT identified expressions of skeletal muscle proteins, includingATPsynα, UQCRC1, dihydrolipoamide dehydrogenase, dihydrolipoamide acetyltransferase, that were not previously reported to change their expressions after exercise-training.
2.Narrow-band imaging with magnifying endoscopy for Peyer's patches is useful in predicting the recurrence of remissive patients with ulcerative colitis.
Satoshi HIYAMA ; Hideki IIJIMA ; Syoichiro KAWAI ; Akira MUKAI ; Eri SHIRAISHI ; Shuko IWATANI ; Toshio YAMAGUCHI ; Manabu ARAKI ; Yoshito HAYASHI ; Shinichiro SHINZAKI ; Tsunekazu MIZUSHIMA ; Masahiko TSUJII ; Tetsuo TAKEHARA
Intestinal Research 2016;14(4):314-321
BACKGROUND/AIMS: Peyer's patches (PPs) are aggregates of lymphoid follicles that are mainly located in the distal ileum; they play a major role in mucosal immunity. We recently reported that patients with ulcerative colitis (UC) have alterations in PPs that can be detected using narrow-band imaging with magnifying endoscopy (NBI-ME). However, the usefulness of NBI-ME in UC treatment as a whole is still unknown. METHODS: We collected NBI-ME images of PPs from 67 UC patients who had undergone ileocolonoscopy. We evaluated changes in the villi using the "villi index," which is based on three categories: irregular formation, hyperemia, and altered vascular network pattern. The patients were divided into two groups on the basis of villi index: low (L)- and high (H)-types. We then determined the correlation between morphological alteration of the PPs and various clinical characteristics. In 52 patients who were in clinical remission, we also analyzed the correlation between NBI-ME findings of PPs and clinical recurrence. RESULTS: The time to clinical recurrence was significantly shorter in remissive UC patients with H-type PPs than in those with L-type PPs (P<0.01). Moreover, PP alterations were not correlated with age, sex, disease duration, clinical activity, endoscopic score, or extent of disease involvement. Multivariate analysis revealed that the existence of H-type PPs was an independent risk factor for clinical recurrence (hazard ratio, 3.3; P<0.01). CONCLUSIONS: UC patients with morphological alterations in PPs were at high risk of clinical relapse. Therefore, to predict the clinical course of UC, it may be useful to evaluate NBI-ME images of PPs.
Colitis, Ulcerative*
;
Endoscopy*
;
Humans
;
Hyperemia
;
Ileum
;
Immunity, Mucosal
;
Multivariate Analysis
;
Peyer's Patches*
;
Recurrence*
;
Risk Factors
;
Ulcer*
3.Narrow-band imaging with magnifying endoscopy for Peyer's patches is useful in predicting the recurrence of remissive patients with ulcerative colitis.
Satoshi HIYAMA ; Hideki IIJIMA ; Syoichiro KAWAI ; Akira MUKAI ; Eri SHIRAISHI ; Shuko IWATANI ; Toshio YAMAGUCHI ; Manabu ARAKI ; Yoshito HAYASHI ; Shinichiro SHINZAKI ; Tsunekazu MIZUSHIMA ; Masahiko TSUJII ; Tetsuo TAKEHARA
Intestinal Research 2016;14(4):314-321
BACKGROUND/AIMS: Peyer's patches (PPs) are aggregates of lymphoid follicles that are mainly located in the distal ileum; they play a major role in mucosal immunity. We recently reported that patients with ulcerative colitis (UC) have alterations in PPs that can be detected using narrow-band imaging with magnifying endoscopy (NBI-ME). However, the usefulness of NBI-ME in UC treatment as a whole is still unknown. METHODS: We collected NBI-ME images of PPs from 67 UC patients who had undergone ileocolonoscopy. We evaluated changes in the villi using the "villi index," which is based on three categories: irregular formation, hyperemia, and altered vascular network pattern. The patients were divided into two groups on the basis of villi index: low (L)- and high (H)-types. We then determined the correlation between morphological alteration of the PPs and various clinical characteristics. In 52 patients who were in clinical remission, we also analyzed the correlation between NBI-ME findings of PPs and clinical recurrence. RESULTS: The time to clinical recurrence was significantly shorter in remissive UC patients with H-type PPs than in those with L-type PPs (P<0.01). Moreover, PP alterations were not correlated with age, sex, disease duration, clinical activity, endoscopic score, or extent of disease involvement. Multivariate analysis revealed that the existence of H-type PPs was an independent risk factor for clinical recurrence (hazard ratio, 3.3; P<0.01). CONCLUSIONS: UC patients with morphological alterations in PPs were at high risk of clinical relapse. Therefore, to predict the clinical course of UC, it may be useful to evaluate NBI-ME images of PPs.
Colitis, Ulcerative*
;
Endoscopy*
;
Humans
;
Hyperemia
;
Ileum
;
Immunity, Mucosal
;
Multivariate Analysis
;
Peyer's Patches*
;
Recurrence*
;
Risk Factors
;
Ulcer*
4.Glucose Profiles Analysis Using the Free Style Libre Pro® in 3 Cases of Total Gastrectomy Without Hypoglycemic Symptoms
Takashi YAMAWAKI ; Naoko HAMADA ; Jie ZHANG ; Eri YAMAGUCHI ; Hiroshi KOMURO
Journal of the Japanese Association of Rural Medicine 2019;68(1):64-70
We monitored the glucose levels of 3 patients who had undergone total gastrectomy without hypoglycemic symptoms using the Free Style Libre Pro®, a continuous glucose monitoring system, and assessed fluctuations. Mean patient age was 75±3 years and all were men. The highest and lowest sensor glucose (SG) values were 337±54 mg/dL and 44±8 mg/dL, respectively. In 2 of the 3 patients, the lowest SG value was 40 mg/dL, which was the lower limit of detection. After administration of alpha-glucosidase inhibitors, all patients showed improvement in the highest and lowest SG values, and the proportion of time when the SG value was 180 mg/dL or above decreased. The proportion of time when the SG value was less than 70 mg/dL increased in 2 of the 3 patients. However, mean SG values during the same time periods were higher than the pretreatment values, and the proportion of time when the value was less than 60 mg/dL decreased. Consensus error grid analysis performed using blood glucose levels from selfmonitored measurements and meal tolerance tests taken during continuous glucose monitoring versus SG values revealed that all data pairs were within the clinically acceptable regions (zones A and B).
5.Risk of Hyperkalemia due to the Administration of Angiotensin Ⅱ Type 1 Receptor Blocker and Calcium Channel Blocker: Retrospective Cohort Study Based on Japanese Medical Information Database.
Kiyoto NAITO ; Hiroyuki FUJII ; Eri INOUE ; Toshio YOSHII ; Masahiko SHINOHARA ; Shinichi YAMAGUCHI
Japanese Journal of Pharmacoepidemiology 2021;26(2):26.e5-
Objective:To assess the risk for hyperkalemia caused by treatment with angiotensin Ⅱ Type 1 receptor blockers (ARB) in clinical practice with Japanese medical database.Design:A cohort study in patients treated with ARB alone and those treated with calcium channel blockers (CCB) alone as control.Methods:The Diagnosis Procedure Combination (DPC) database provided by Medical Data Vision Co., Ltd. was used to identify patients who received a diagnosis of hypertension (ICD-10 codes, I10 to I15) and were treated with ARB or CCB from April 2008 to June 2017. A logistic regression model was applied to estimate adjusted odds ratios (OR) and their 95% confidence intervals (CI) in these patients. The outcome in the logistic model was hyperkalemia (serum potassium≧5.5 mEq/L) and the covariates were sex, age, renal insufficiency, hepatic insufficiency, and baseline serum potassium levels. And, subgroup analysis was also performed in patients with and without renal insufficiency.Results:The incidence of hyperkalemia (per 1000 person-years) with ARB was 39.4 and that with CCB was 32.6. And, median periods from the index date to the date of occurrence of hyperkalemia for both exposure and control groups were 36 days (Min-Max:12-85) and 51.5 days(Min-Max:8-88)respectively. However, treatment with ARB was not associated with occurrence of hyperkalemia (OR 1.26, 95%CI: 0.58-2.75). The risk for hyperkalemia among those with renal insufficiency was higher (OR 3.31, 95%CI: 1.39-7.88)and as baseline serum potassium increased, the risk increased as well (OR 9.20, 95%CI: 3.52-24.10). And, the subgroup analysis also showed that rare occurrence of hyperkalemia by ARB and elevation risk for hyperkalemia by baseline serum potassium.Conclusion:The clinical data showed rare occurrence of hyperkalemia caused by ARB, indicating that renal insufficiency and baseline serum potassium levels affected the onset of the disease in clinical practice. Previous studies also reported the effects of renal insufficiency and other factors on the onset of hyperkalemia. ARB should be prescribed carefully in patients with these factors, as is conventionally done.