1.Successful Hemostasis after Dental Extraction with the Use of Recombinant Activated Factor VII in a Factor VII Deficient Patient
Koji Satoh ; Masataka Okamoto ; Aya Torimura ; Rina Taguchi ; Yasuhisa Mineno ; Hideki Mizutani
Oral Science International 2006;3(1):10-12
We report our experience of successful hemostasis after dental extraction with the use of rFVIIa in a FVII deficient patient. Preoperative PT% was 25%, and FVII was less than 3%. Thirty minutes before tooth extraction, 1.2 mg of rFVIIa was injected. At the beginning of the operation, PT% was more than 200%, FVII was 336%, and the hemostasis after dental extraction was excellent. rFVIIa was used effectively and safely for dental extraction in this case of FVII deficiency.
2.Segmental Arteries and Veins at Higher Lumbar Levels Can Intersect the Adjacent Caudal Intervertebral Disc in the Anterior Part of the Spinal Column: A Cadaveric Analysis
Kiyoshi YAGI ; Nobuyuki SUZUKI ; Jun MIZUTANI ; Kenji KATO ; Akira KONDO ; Yuya WASEDA ; Yuta GOTO ; Hideki MURAKAMI
Asian Spine Journal 2022;16(1):1-8
Methods:
Five formalin-embalmed human cadavers were used. We assessed the proportion of segmental arteries and veins that intersected the IVD in the L2–L5 range and their course on the anterior part of the spinal column.
Results:
The segmental arteries and veins commonly intersect the anterior part of the IVD (artery, 28.1%; vein, 42.1%). Seven of 10 (70%) segmental arteries at L2 intersected the IVD, but only one artery intersected the IVD at L3 and L4. The proportions of segmental veins that intersected the IVD were 60%, 50%, and 16.7% at L2, L3, and L4, respectively.
Conclusions
The segmental arteries and veins frequently intersect the IVD in the anterior part of the spinal column. Therefore, it is necessary to consider these individual anatomical features to prevent vascular damage during lateral lumbar interbody fusion surgery.
3.p38 Mitogen-Activated Protein Kinase Is Involved in Interleukin-6 Secretion from Human Ligamentum Flavum–Derived Cells Stimulated by Tumor Necrosis Factor-α
Kiyoshi YAGI ; Yuta GOTO ; Kenji KATO ; Nobuyuki SUZUKI ; Akira KONDO ; Yuya WASEDA ; Jun MIZUTANI ; Yohei KAWAGUCHI ; Yuji JOYO ; Yuko WAGURI-NAGAYA ; Hideki MURAKAMI
Asian Spine Journal 2021;15(6):713-720
Methods:
HFCs were obtained from patients with LSS who underwent surgery. HFCs were stimulated by tumor necrosis factor-α (TNF-α) and a p38 MAP kinase inhibitor, SB203580. Phosphorylation of the p38 MAP kinase was analyzed by western blotting. The concentration of interleukin-6 (IL-6) in the conditioned medium was measured by enzyme-linked immunoassay and IL-6 messenger RNA expression levels were determined by real-time polymerase chain reaction.
Results:
TNF-α induced the phosphorylation of p38 MAP kinase in a time-dependent manner, which was suppressed by the p38 MAP kinase inhibitor, SB203580. TNF-α also stimulated IL-6 release in both a time- and dose-dependent manner. On its own, SB203580 did not stimulate IL-6 secretion from HFCs; however, it dramatically suppressed the degree of IL-6 release stimulated by TNF-α from HFCs.
Conclusions
This is the first report suggesting that TNF-α stimulates the gene expression and protein secretion of IL-6 via p38 MAP kinase in HFCs. A noted association between tissue hypertrophy and inflammation suggests that the p38 MAP kinase inflammatory pathway may be a therapeutic molecular target for LSS.
4.Impact of sarcopenia on biliary drainage during neoadjuvant therapy for pancreatic cancer
Kunio KATAOKA ; Eizaburo OHNO ; Takuya ISHIKAWA ; Kentaro YAMAO ; Yasuyuki MIZUTANI ; Tadashi IIDA ; Hideki TAKAMI ; Osamu MAEDA ; Junpei YAMAGUCHI ; Yukihiro YOKOYAMA ; Tomoki EBATA ; Yasuhiro KODERA ; Hiroki KAWASHIMA
Clinical Endoscopy 2024;57(1):112-121
Background/Aims:
Since the usefulness of neoadjuvant chemo(radiation) therapy (NAT) for pancreatic cancer has been demonstrated, recurrent biliary obstruction (RBO) in patients with pancreatic cancer with a fully covered self-expandable metal stent (FCSEMS) during NAT is expected to increase. This study investigated the impact of sarcopenia on RBO in this setting.
Methods:
Patients were divided into normal and low skeletal muscle index (SMI) groups and retrospectively analyzed. Patient characteristics, overall survival, time to RBO (TRBO), stent-related adverse events, and postoperative complications were compared between the two groups. A Cox proportional hazard model was used to identify the risk factors for short TRBO.
Results:
A few significant differences were observed in patient characteristics, overall survival, stent-related adverse events, and postoperative complications between 38 patients in the normal SMI group and 17 in the low SMI group. The median TRBO was not reached in the normal SMI group and was 112 days in the low SMI group (p=0.004). In multivariate analysis, low SMI was the only risk factor for short TRBO, with a hazard ratio of 5.707 (95% confidence interval, 1.148–28.381; p=0.033).
Conclusions
Sarcopenia was identified as an independent risk factor for RBO in patients with pancreatic cancer with FCSEMS during NAT.
5.Clinical meaning of sarcopenia in patients undergoing endoscopic treatment
Hiroyuki HISADA ; Yosuke TSUJI ; Hikaru KURIBARA ; Ryohei MIYATA ; Kaori OSHIO ; Satoru MIZUTANI ; Hideki NAKAGAWA ; Rina CHO ; Nobuyuki SAKUMA ; Yuko MIURA ; Hiroya MIZUTANI ; Daisuke OHKI ; Seiichi YAKABI ; Yu TAKAHASHI ; Yoshiki SAKAGUCHI ; Naomi KAKUSHIMA ; Nobutake YAMAMICHI ; Mitsuhiro FUJISHIRO
Clinical Endoscopy 2024;57(4):446-453
With increasing global life expectancy, the significance of geriatric assessment parameters has increased. Sarcopenia is a crucial assessment parameter and is defined as the age-related loss of muscle mass and strength. Sarcopenia is widely acknowledged as a risk factor for postoperative complications in diverse advanced malignancies and has a detrimental effect on the long-term prognosis. While most studies have primarily concentrated on the correlation between sarcopenia and advanced cancer, more recent investigations have focused on the relationship between sarcopenia and early-stage cancer. Endoscopic submucosal dissection (ESD), which is less invasive than surgical intervention, is extensively employed in the management of early-stage cancer, although it is associated with complications such as bleeding and perforation. In recent years, several reports have revealed the adverse consequences of sarcopenia in patients with early-stage cancer undergoing ESD. This literature review briefly summarizes the recent studies on the association between sarcopenia and ESD.