1.Association between urinary metallothionein concentration and causes of death among cadmium-exposed residents in Japan: a 35-year follow-up study.
Lianen LI ; Rie OKAMOTO ; Xian Liang SUN ; Teruhiko KIDO ; Kazuhiro NOGAWA ; Yasushi SUWAZONO ; Hideaki NAKAGAWA ; Masaru SAKURAI
Environmental Health and Preventive Medicine 2025;30():1-1
BACKGROUND:
As research progresses, there is a growing body of evidence indicating that urinary metallothionein (MT) levels may be elevated in individuals exposed to cadmium (Cd). This study aimed to investigate the potential association between urinary MT levels and causes of mortality among residents of the Kakehashi River Basin who have been exposed to Cd.
METHOD:
The study involved a total of 1,398 men and 1,731 women were conducted between 1981 and 1982, with follow-up until November 2016. The study employed the Cox proportional-hazards model to examine the association between higher urinary MT concentrations and the risk of all-cause or cause-specific mortality within the population. Furthermore, the Fine and Gray competing risks regression model was used to evaluate the links between specific causes of death.
RESULTS:
The findings revealed that elevated urinary MT concentrations were linked to increased all-cause mortality and higher mortality rates from renal and urinary tract diseases across all participants. Specifically, in men, higher urinary MT levels were associated with elevated all-cause mortality, while in women, increased concentrations were linked to higher mortality from endocrine, nutritional, and metabolic diseases, as well as cardiovascular diseases. Even after adjusting for competing risks, higher urinary MT concentrations were associated with tumor-related mortality in men and continued to be associated with cardiovascular disease mortality in women.
CONCLUSIONS
In conclusion, the results suggest that women may face a greater risk of adverse health effects due to prolonged exposure to Cd. Urinary MT levels could potentially serve as a biomarker for mortality from these diseases in populations chronically exposed to Cd.
Humans
;
Male
;
Female
;
Cadmium/urine*
;
Japan/epidemiology*
;
Metallothionein/metabolism*
;
Middle Aged
;
Cause of Death
;
Adult
;
Follow-Up Studies
;
Aged
;
Environmental Exposure/analysis*
;
Proportional Hazards Models
2.5-Aminosalicylic acid aggravates colitis mimicking exacerbation of ulcerative colitis.
Jun MIYOSHI ; Katsuyoshi MATSUOKA ; Atsushi YOSHIDA ; Makoto NAGANUMA ; Tadakazu HISAMATSU ; Tomoharu YAJIMA ; Nagamu INOUE ; Susumu OKAMOTO ; Yasushi IWAO ; Haruhiko OGATA ; Fumiaki UENO ; Toshifumi HIBI ; Takanori KANAI
Intestinal Research 2018;16(4):635-640
Ulcerative colitis (UC) is one of the major clinical phenotypes of inflammatory bowel diseases. Although 5-aminosalicylic acid (5-ASA) is widely used for UC and its efficacy and safety have been demonstrated, a few patients paradoxically develop a severe exacerbation of colitis by 5-ASA administration. It is crucial to know clinical features including endoscopic findings in this condition for making a correct diagnosis and a prompt decision to withdraw the medication. Here, we report case series with UC exacerbated by 5-ASA. Medical records of 8 UC patients experiencing an exacerbation of colitis after induction of 5-ASA that was improved by the withdrawal of 5-ASA but also re-aggravated by dose increase or re-administration of 5-ASA were reviewed. The patients were newly diagnosed with UC, started 5-ASA and developed an exacerbation in approximately 2 to 3 weeks. They did not appear to have systemic allergic reactions. Seven of the 8 patients had a high fever. Three of 5 patients who undertook total colonoscopy showed right-side-dominant colitis. These findings suggest clinical characteristics in this condition. Further assessment of clinical and endoscopic features in more cases is necessary for establishing diagnostic criteria and understanding underlying mechanisms in those cases where 5-ASA aggravates the colitis.
Colitis*
;
Colitis, Ulcerative*
;
Colonoscopy
;
Diagnosis
;
Fever
;
Humans
;
Hypersensitivity
;
Inflammatory Bowel Diseases
;
Medical Records
;
Mesalamine*
;
Phenotype
;
Ulcer*
3.Update on rare epithelial ovarian cancers: based on the Rare Ovarian Tumors Young Investigator Conference.
Ji Yon Agnes JANG ; Nozomu YANAIHARA ; Eric PUJADE-LAURAINE ; Yoshiki MIKAMI ; Katsutoshi ODA ; Michael BOOKMAN ; Jonathan LEDERMANN ; Muneaki SHIMADA ; Takako KIYOKAWA ; Byoung Gie KIM ; Noriomi MATSUMURA ; Tsunehisa KAKU ; Takafumi KURODA ; Yoko NAGAYOSHI ; Ayako KAWABATA ; Yasushi IIDA ; Jae Weon KIM ; Michael QUINN ; Aikou OKAMOTO
Journal of Gynecologic Oncology 2017;28(4):e54-
There has been significant progress in the understanding of the pathology and molecular biology of rare ovarian cancers, which has helped both diagnosis and treatment. This paper provides an update on recent advances in the knowledge and treatment of rare ovarian cancers and identifies gaps that need to be addressed by further clinical research. The topics covered include: low-grade serous, mucinous, and clear cell carcinomas of the ovary. Given the molecular heterogeneity and the histopathological rarity of these ovarian cancers, the importance of designing adequately powered trials or finding statistically innovative ways to approach the treatment of these rare tumors has been emphasized. This paper is based on the Rare Ovarian Tumors Conference for Young Investigators which was presented in Tokyo 2015 prior to the 5th Ovarian Cancer Consensus Conference of the Gynecologic Cancer InterGroup (GCIG).
Consensus
;
Diagnosis
;
Female
;
Humans
;
Molecular Biology
;
Mucins
;
Ovarian Neoplasms*
;
Ovary
;
Pathology
;
Population Characteristics
;
Rare Diseases
;
Research Personnel*
4.Use of the Prognostic Nutritional Index to predict clinical outcomes of patients with terminal stage cancer
Yoichi Nakamura ; Jiro Nagao ; Yoshihisa Saida ; Manabu Watanabe ; Yasushi Okamoto ; Koji Asai ; Toshiyuki Enomoto ; Takaharu Kiribayashi ; Shinya Kusachi
Palliative Care Research 2013;8(2):199-202
Introduction: The importance of estimating the prognosis of advanced cancer patients is well known, but clinicians do not estimate survival time accurately. Since there is a need for an objective index to estimate survival time, the utility of the Prognostic Nutritional Index (PNI), which depends only on objective factors, was evaluated. Methods: The PNI was calculated using the following formula, PNI=10×serum albumin value (g/dL)+0.005×lymphocyte count in peripheral blood, at 3 months, 2 months, 1 month, 3 weeks, 2 weeks, 1 week, and within 3 days before death in 278 cancer patients (166 men, 112 women; age range, 33-99 years; mean age, 69.8 years) who died in a hospital surgical unit. Results: Sites of primary diseases included lung, breast, esophagus, stomach, colorectum, liver, biliary tract, and pancreas. The PNI values showed a gradual decrease over time. Changes in the PNI values were lower in non-gastrointestinal cancer patients than in gastrointestinal cancer patients. The mean PNI value was significantly higher in patients who lived >3 weeks (38.8) than in those who died within 3 weeks (32.4). When the PNI cut-off point was set at 35, and it was assumed that the life expectancy was within 3 weeks in cases with PNI <35, the sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were 74.8%, 62.2%, 68.1%, and 69.6%, respectively. Discussion: The PNI appears to be a useful and simple parameter to predict clinical outcomes of patients with terminal stage cancer. Particularly, the PNI is considered feasible for gastrointestinal cancer patients.
5.Platelet-rich plasma inhibits the apoptosis of highly adipogenic homogeneous preadipocytes in an in vitro culture system.
Yoshitaka FUKAYA ; Masayuki KURODA ; Yasuyuki AOYAGI ; Sakiyo ASADA ; Yoshitaka KUBOTA ; Yoshitaka OKAMOTO ; Toshinori NAKAYAMA ; Yasushi SAITO ; Kaneshige SATOH ; Hideaki BUJO
Experimental & Molecular Medicine 2012;44(5):330-339
Auto-transplantation of adipose tissue is commonly used for the treatment of tissue defects in plastic surgery. The survival of the transplanted adipose tissue is not always constant, and one of reasons is the accelerated apoptosis of the implanted preadipocytes. We have recently established highly homogeneous preadipocytes, named ccdPAs. The aim of the current study was to evaluate the regulation of the potency of platelet-rich plasma (PRP) on the apoptosis of ccdPAs in vitro. PRP stimulated the proliferation of the preadipocytes in a dose-dependent manner, and the stimulatory activity of 2% PRP was significantly higher than that of 2% FBS or 2% platelet-poor plasma (PPP). The presence of 2% PRP significantly inhibited serum starvation- or TNF-alpha/cycloheximide-induced apoptosis in comparison to 2% FBS or 2% PPP. DAPK1 and Bcl-2-interacting mediator of cell death (BIM) mRNAs were reduced in the preadipocytes cultured with 2% PRP in comparison to those cultured in 2% FBS. The gene expression levels were significantly higher in cells cultured without serum in comparison to cells cultured with 2% FBS, and the levels in the cells with 2% PRP were reduced to 5-10% of those in the cells without serum. These results indicated that ccdPAs exhibit anti-apoptotic activities, in addition to increased proliferation, when cultured in 2% PRP in comparison to the same concentration of FBS, and that this was accompanied with reduced levels of DAPK1 and BIM mRNA expression in in vitro culture. PRP may improve the outcome of transplantation of adipose tissue by enhancing the anti-apoptotic activities of the implanted preadipocytes.
Adipocytes/*cytology
;
Adipose Tissue/cytology/metabolism
;
Apoptosis/*physiology
;
Apoptosis Regulatory Proteins/antagonists & inhibitors/metabolism
;
Calcium-Calmodulin-Dependent Protein Kinases/antagonists & inhibitors/metabolism
;
Cell Culture Techniques/*methods
;
*Cell Differentiation
;
Cell Proliferation
;
Cells, Cultured
;
Gene Expression Regulation
;
Humans
;
Membrane Proteins/antagonists & inhibitors/metabolism
;
*Platelet-Rich Plasma/metabolism/physiology
;
Proto-Oncogene Proteins/antagonists & inhibitors/metabolism
;
Tissue Transplantation
6.A Japanese Case of Episodic Fever Compatible with Familial Mediterranean Fever
Hidenobu Kawabata ; Wari Yamamoto ; Takuya Okamoto ; Nobuhiko Sasaki ; Yasushi Miyata
General Medicine 2004;5(1):21-26
A 31-year-old Japanese female came to our outpatient clinic because of a 15-year history of recurrent episodic chest pain accompanied by fever, each lasting for three days. The patient was diagnosed with familial Mediterranean fever (FMF) because of the following: 1) short attacks of fever recurring at varying intervals; 2) pleuritic chest pain accompanied by fever; 3) the patient's sisters had similar episodes of fever accompanied by abdominal or chest pain; and 4) absence of any other causative factors responsible for her symptoms or pathologic findings. Although FMF has been described primarily in several limited ethnic groups, only a few cases have been reported in Japan. No diagnostic tests are commercially available for FMF so identifying the characteristic clinical picture of FMF is important.
7.Results of Laminoplasty for Cervical Spondylotic Myelopathy.
Akihiko OKAMOTO ; Masafumi ISHIZUKI ; Yasushi ISOBE ; Norio SAITOH ; Masami TOMINAGA ; Hidehiko OZAWA ; Taisuke TANIZAWA ; Yasuo SUGATA ; Tomoyuki MOCHIZUKI ; Kenji HARA ; Kazuyuki SAKAI
Journal of the Japanese Association of Rural Medicine 2001;49(5):729-732
[Follow-up studies were made of 35 patient who underwent laminoplasty for cervical spondylotic myelopathy for 22 monthoon averages]
The conditions of 35 patients were observed consecutively after laminoplasty.
The mean JOA scores were improved from 8.7 to 12.5. Postoperative JOA scores correlated with preoperarive JOA scores (r=0.60, p<0.01) and ages at the time of the operation (r=-0.45, p<0.01). The period from the onset of the disease to the operation and the vertebral canal diameters didnot [No significant correlation who found between- and-] influence the operative results of the operation.


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