1.Comparison between Hounsfield unit value and vertebral bone quality score for adjacent vertebral fracture risk assessment after balloon kyphoplasty: a propensity score matching study
Koji MATSUMOTO ; Masahiro HOSHINO ; Hirokatsu SAWADA ; Sosuke SAITO ; Tomohiro FURUYA ; Hirohiko TSUJISAWA ; Ryo OZAKI ; Kazuyoshi NAKANISHI
Asian Spine Journal 2026;20(1):52-59
Methods:
This single-center study included 130 patients with osteoporotic vertebral fractures who underwent BKP and preoperative computed tomography and magnetic resonance imaging. After propensity score matching for age; sex; body mass index; fracture level; use of steroids, teriparatide, or osteoporosis medication; and previous AVF, patients were classified into the AVF (−) and AVF (+) groups, each of which included 34 patients. Bone strength was assessed using the L1 HU, L1–4 HU (mean HU of L1–L4), L1 VBQ, and L1–4 VBQ. Group differences were analyzed, and the predictive accuracy for AVF was evaluated using area under the receiver operating characteristic curve (AUC).
Results:
L1 HU was significantly lower in the AVF (+) group than in the AVF (−) group (92.1±29.4 vs. 71.6±21.4, p =0.013). No significant differences between the groups were observed for L1–4 HU, L1 VBQ, and L1–4 VBQ. L1 HU had the highest AUC (0.657), compared with those for L1–4 HU (0.625), L1 VBQ (0.524), and L1–4 VBQ (0.523). The predictive accuracy of L1 was superior to that of L1–4 for both HU and VBQ scores.
Conclusions
HU was superior to VBQ in predicting AVF risk after BKP, with L1 HU being the most effective indicator of bone strength and AVF risk.
2.Corrigendum: Randomized, crossover questionnaire survey of acceptabilities of controlled-release mesalazine tablets and granules in ulcerative colitis patients
Keiji YAGISAWA ; Taku KOBAYASHI ; Ryo OZAKI ; Shinji OKABAYASHI ; Takahiko TOYONAGA ; Miki MIURA ; Mari HAYASHIDA ; Eiko SAITO ; Masaru NAKANO ; Hajime MATSUBARA ; Tadakazu HISAMATSU ; Toshifumi HIBI
Intestinal Research 2020;18(3):343-344
3.Randomized, crossover questionnaire survey of acceptabilities of controlled-release mesalazine tablets and granules in ulcerative colitis patients
Keiji YAGISAWA ; Taku KOBAYASHI ; Ryo OZAKI ; Shinji OKABAYASHI ; Takahiko TOYONAGA ; Miki MIURA ; Mari HAYASHIDA ; Eiko SAITO ; Masaru NAKANO ; Hajime MATSUBARA ; Tadakazu HISAMATSU ; Toshifumi HIBI
Intestinal Research 2019;17(1):87-93
BACKGROUND/AIMS: Oral mesalazine is an important treatment for ulcerative colitis (UC), and non-adherence to mesalazine increases the risk of relapse. Controlled-release (CR) mesalazine has 2 formulations: tablets and granules. The relative acceptabilities of these formulations may influence patient adherence; however, they have not been compared to date. This study aimed to evaluate the acceptabilities of the 2 formulations of CR mesalazine in relation to patient adherence using a crossover questionnaire survey. METHODS: UC patients were randomly assigned to 2 groups in a 1:1 ratio. Patients in each group took either 4 g of CR mesalazine tablets or granules for 6 to 9 weeks, and then switched to 4 g of the other formulation for a further 6 to 9 weeks. The acceptability and efficacy were evaluated by questionnaires, and adherence was assessed using a visual analog scale. The difference in acceptabilities between the 2 formulations and its impact on adherence were assessed. RESULTS: A total of 49 patients were prospectively enrolled and 33 patients were included in the analysis. Significantly more patients found the tablets to be less acceptable than the granules (76% vs. 33%, P=0.0005). The granules were preferable to the tablets when the 2 formulations were compared directly (73% vs. 21%, P=0.004), for their portability, size, and numbers of pills. The adherence rate was slightly better among patients taking the granules (94% vs. 91%) during the observation period, but the difference was not significant (P=0.139). CONCLUSIONS: CR mesalazine granules are more acceptable than tablets, and may therefore be a better option for long-term medication.
Colitis, Ulcerative
;
Drug Compounding
;
Humans
;
Medication Adherence
;
Mesalamine
;
Patient Acceptance of Health Care
;
Patient Compliance
;
Prospective Studies
;
Recurrence
;
Tablets
;
Ulcer
;
Visual Analog Scale
4.Individualized treatment based on CYP3A5 single-nucleotide polymorphisms with tacrolimus in ulcerative colitis
Shinji OKABAYASHI ; Taku KOBAYASHI ; Eiko SAITO ; Takahiko TOYONAGA ; Ryo OZAKI ; Shintaro SAGAMI ; Masaru NAKANO ; Junichi TANAKA ; Keiji YAGISAWA ; Satoshi KURONUMA ; Osamu TAKEUCHI ; Toshifumi HIBI
Intestinal Research 2019;17(2):218-226
BACKGROUND/AIMS: The pharmacokinetics of tacrolimus (TAC) is known to be largely influenced by single-nucleotide polymorphisms (SNPs) in CYP3A5. Patients starting TAC require careful dose adjustment, owing to the wide range of optimal dosages, depending on their CYP3A5 expression status. Here, we evaluated whether individualization of TAC dosages based on CYP3A5 SNPs would improve its therapeutic efficacy in ulcerative colitis. METHODS: Twenty-one patients were prospectively treated, with their initial dosage adjusted according to their CYP3A5 status (0.1, 0.15, and 0.2 mg/kg/day for CYP3A5*3/*3, CYP3A5*1/*3, and CYP3A5*1/*1, respectively). Their clinical outcomes were compared with those of patients treated with a fixed dose (0.1 mg/kg/day). RESULTS: The first blood trough level of CYP3A5 expressors, CYP3A5*1/*3 or CYP3A5*1/*1, and the overall rate in achieving the target blood trough level within a week in the individualized-dose group were significantly higher than those in the fixed-dose group (5.15±2.33 ng/mL vs. 9.63±0.79 ng/mL, P=0.035 and 12.5% vs. 66.7%, P=0.01). The remission rate at 2 weeks in the expressors was as high as that in the nonexpressors, CYP3A5*3/*3, in the individualized-dose group. CONCLUSIONS: Individualized TAC treatment is effective against ulcerative colitis regardless of the CYP3A5 genotype.
Colitis, Ulcerative
;
Cytochrome P-450 CYP3A
;
Genotype
;
Humans
;
Pharmacokinetics
;
Polymorphism, Single Nucleotide
;
Prospective Studies
;
Tacrolimus
;
Ulcer
5.Relationship between Displacement of the Psoas Major Muscle and Spinal Alignment in Patients with Adult Spinal Deformity
Yoshiaki ODA ; Tomoyuki TAKIGAWA ; Ryo UGAWA ; Yasuyuki SHIOZAKI ; Haruo MISAWA ; Yoshihisa SUGIMOTO ; Masato TANAKA ; Toshifumi OZAKI
Asian Spine Journal 2018;12(2):335-342
STUDY DESIGN: Cross sectional study. PURPOSE: To clarify the difference in position of the psoas muscle between adult spinal deformity (ASD) and lumbar spinal stenosis (LSS). OVERVIEW OF LITERATURE: Although it is known that the psoas major muscle deviates in ASD patients, no report is available regarding the difference in comparison with LSS patients. METHODS: This study investigates 39 patients. For evaluating spinal alignment, pelvic tilt (PT), pelvic incidence (PI), sacral slope, lumbar lordosis (LL), PI–LL, Cobb angle, and the convex side, the lumbar curves were measured. For measuring the position of the psoas major at the L4/5 disk level, magnetic resonance imaging was used. The displacements of psoas major muscle were measured separately in the anterior–posterior and lateral directions. We examined the relationship between the radiographic parameters and anterior displacement (AD) and lateral displacement (LD) of the psoas major muscle. RESULTS: AD was demonstrated in 15 cases with ASD and nine cases with LSS (p>0.05). LD was observed in 13 cases with ASD and no cases with LSS (p < 0.01). The Cobb angle was significantly greater in cases with AD than in those without AD (p=0.04). PT, LL, PI–LL, and Cobb angle were significantly greater in cases with LD (p < 0.05). All cases with LD had AD, but no case without AD had LD (p < 0.001). The side of greater displacement at L4/5 and the convex side of the lumbar curve were consistent in all cases. CONCLUSIONS: Despite AD being observed in LSS as well, LD was observed only in the ASD group. Radiographic parameters were worse when LD was seen, rather than AD.
Adult
;
Animals
;
Congenital Abnormalities
;
Humans
;
Incidence
;
Lordosis
;
Lumbar Vertebrae
;
Magnetic Resonance Imaging
;
Posture
;
Psoas Muscles
;
Rheumatic Diseases
;
Scoliosis
;
Spinal Stenosis
6.Steroid-refractory extensive enteritis complicated by ulcerative colitis successfully treated with adalimumab.
Shinji OKABAYASHI ; Taku KOBAYASHI ; Tomohisa SUJINO ; Ryo OZAKI ; Satoko UMEDA ; Takahiko TOYONAGA ; Eiko SAITO ; Masaru NAKANO ; Maria Carla TABLANTE ; Shojiroh MORINAGA ; Toshifumi HIBI
Intestinal Research 2017;15(4):535-539
Extracolonic involvement of the gastrointestinal tract is extremely uncommon in ulcerative colitis (UC) and rarely found in the upper gastrointestinal tract or in postoperative cases since it typically responds to steroids. Here we report a case of UC complicated by extensive ileal inflammation that was refractory to steroids. A 20-year-old man was diagnosed with UC of typical pancolitis without ileal involvement and started treatment with pH-dependent mesalazine and oral prednisolone. Although his symptoms transiently resolved, the condition flared when the steroid dose was tapered down. Computed tomography revealed marked thickening of the ileal wall, and capsule endoscopy and balloon-assisted enteroscopy found diffuse mucosal inflammation with ulcers in the ileum. On the contrary, the inflammation in the colon and rectum was improving. Since the response to the second steroid course was inadequate, treatment with adalimumab and 6-mercaptopurine was initiated and finally achieved clinical and endoscopic remission. The investigation of small intestinal lesions is necessary in patients with UC whose clinical deterioration cannot be explained by colonic lesions.
6-Mercaptopurine
;
Adalimumab*
;
Capsule Endoscopy
;
Colitis, Ulcerative*
;
Colon
;
Enteritis*
;
Gastrointestinal Tract
;
Humans
;
Ileum
;
Inflammation
;
Inflammatory Bowel Diseases
;
Mesalamine
;
Prednisolone
;
Rectum
;
Steroids
;
Ulcer*
;
Upper Gastrointestinal Tract
;
Young Adult

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