1.What is the most appropriate regimen for untreated Waldenström macroglobulinemia?
Naohiro SEKIGUCHI ; Airi HAMANO ; Tomoko KITAGAWA ; Kenichi ITO ; Kazuhiko HIRANO ; Kazuaki YAMADA
Blood Research 2019;54(2):153-156
		                        		
		                        			
		                        			No abstract available.
		                        		
		                        		
		                        		
		                        			Cost-Benefit Analysis
		                        			;
		                        		
		                        			Rituximab
		                        			;
		                        		
		                        			Waldenstrom Macroglobulinemia
		                        			
		                        		
		                        	
2.Successful treatment of non-IgM lymphoplasmacytic lymphoma by bortezomib-containing regimen: case reports and review of literature
Kenichi ITO ; Risa NISHIYAMA ; Kazuhiko HIRANO ; Kazuaki YAMADA ; Naohiro SEKIGUCHI
Blood Research 2019;54(3):236-240
		                        		
		                        			
		                        			No abstract available.
		                        		
		                        		
		                        		
		                        			Lymphoma
		                        			
		                        		
		                        	
3.Impact of rituximab and half-dose CHOP as primary therapy for untreated symptomatic Waldenström Macroglobulinemia: review of a combined regimen of rituximab with an alkylating agent.
Naohiro SEKIGUCHI ; Airi HAMANO ; Tomoko KITAGAWA ; Yuya KURIHARA ; Kenichi ITO ; Miwa KURIMOTO ; Kozo WATANABE ; Kazuhiko HIRANO ; Satoshi NOTO ; Kazuaki YAMADA ; Naoki TAKEZAKO
Blood Research 2018;53(2):117-122
		                        		
		                        			
		                        			BACKGROUND: Waldenström Macroglobulinemia (WM) is a rare subtype of indolent B-cell lymphoma, and prospective randomized studies on WM are scarce. The R-CHOP therapy [rituximab (R), cyclophosphamide, hydroxy-doxorubicin, vincristine, and prednisone] is a popular and recommended regimen for primary therapy, prescribed by several treatment guidelines for WM. However, treatment with R-CHOP is accompanied by severe myelosuppression and high rates of peripheral neuropathy. Therefore, we retrospectively evaluated the efficacy and toxicity of half-dose CHOP combined with R as a primary therapy for WM. METHODS: Patients with untreated symptomatic WM, treated at the Disaster Medical Center between April 2011 and September 2016, were retrospectively analyzed after administration of 6 cycles of half-dose R-CHOP for every 3 weeks. The response, median time to response, best response, progression-free survival, overall survival, and toxicities were evaluated. RESULTS: Of the 20 WM patients analyzed, 16 (80%) received half-dose R-CHOP without vincristine, and 13 (65%) responded to the treatment. With a median follow-up duration of 26.3 months, the 2-year progression-free survival and 2-year overall survival rates were 70 and 93.3%, respectively. The median time to response and best response were 6 and 9.9 weeks, respectively. Grade 3/4 leukocytopenia, neutropenia, febrile neutropenia, and Grade 1 peripheral neuropathy developed in 32, 37, 0, and 21% of patients, respectively. CONCLUSION: The half-dose R-CHOP is an effective and well-tolerated primary therapy for WM. To the best of our knowledge, this is the first study reporting the use of a reduced-dose R-CHOP regimen for the primary treatment of WM.
		                        		
		                        		
		                        		
		                        			Cyclophosphamide
		                        			;
		                        		
		                        			Disasters
		                        			;
		                        		
		                        			Disease-Free Survival
		                        			;
		                        		
		                        			Febrile Neutropenia
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Leukopenia
		                        			;
		                        		
		                        			Lymphoma, B-Cell
		                        			;
		                        		
		                        			Neutropenia
		                        			;
		                        		
		                        			Peripheral Nervous System Diseases
		                        			;
		                        		
		                        			Prospective Studies
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Rituximab*
		                        			;
		                        		
		                        			Survival Rate
		                        			;
		                        		
		                        			Vincristine
		                        			;
		                        		
		                        			Waldenstrom Macroglobulinemia*
		                        			
		                        		
		                        	
4.Association between urinary 8-OHdG and pulse wave velocity in hypertensive patients with type 2 diabetes mellitus.
Kazuhiko KOTANI ; Toshiyuki YAMADA
Singapore medical journal 2014;55(4):202-208
INTRODUCTIONOxidative stress, assessed using 8-hydroxy-2'-deoxyguanosine (8-OHdG), can be associated with arterial stiffness in patients with type 2 diabetes mellitus (T2DM) and/or hypertension (HT). We investigated the correlation between urinary 8-OHdG and pulse wave velocity (PWV) in hypertensive and non-hypertensive T2DM patients with fair glycaemic control to determine the clinical significance of HT as a comorbidity in the diabetic state.
METHODSClinical data, including traditional cardiovascular risk factors, diabetic complications, prescribed agents, urinary 8-OHdG level and brachial-ankle PWV, was collected from T2DM patients with and without HT.
RESULTSThere were 76 patients (45 men, 31 women; mean age 61 years; mean haemoglobin A1c level 6.5%) in the study cohort. T2DM patients with HT had significantly higher mean PWV than patients without HT (1,597 cm/s vs 1,442 cm/s; p < 0.05). Patients with HT showed no significant difference in 8-OHdG levels relative to those without HT (median 7.9 ng/mg creatinine vs 8.8 ng/mg creatinine; p > 0.05). Simple linear correlation and stepwise multiple linear regression analyses revealed that 8-OHdG levels correlated independently, significantly and positively with PWV among T2DM patients with HT (r = 0.33, p < 0.05; β= 0.23, p < 0.05). No significant correlation was observed between 8-OHdG levels and PWV among T2DM patients without HT.
CONCLUSIONIn the hypertensive state, oxidative stress can be responsible for the development of arterial stiffness, even in patients with fairly well controlled T2DM. Oxidative stress management may be necessary for the prevention of cardiovascular disease in this population.
Adult ; Aged ; Aged, 80 and over ; Ankle Brachial Index ; Cohort Studies ; Deoxyguanosine ; analogs & derivatives ; urine ; Diabetes Complications ; urine ; Diabetes Mellitus, Type 2 ; urine ; Female ; Glycated Hemoglobin A ; metabolism ; Humans ; Hypertension ; complications ; urine ; Male ; Middle Aged ; Oxidative Stress ; Pulse Wave Analysis ; Vascular Stiffness
5.Determinants of carotid atherosclerosis in the general Mongolinan population using ultrasonography
Uurtuya Shuumarjav ; Kazuhiko Kotani ; Hideki Yoshioka ; Dagdanbazar Nyamdorj ; Toshiyuki Yamada ; Nobuyuki Taniguchi
Innovation 2013;7(1):44-47
		                        		
		                        			
		                        			Atherosclerotic risk factors contribute to carotid atherosclerosis. Carotid intima-media thickness (IMT), as assessed using a non-invasive high-resolution ultrasound, can predict cardiovascular disease (CVD). Whereas the control of CVD is crucial for the Mongolian people, the studies on carotid atherosclerosis are lacking. The present population-based survey was a cross-sectional investigation of the determinants of carotid IMT in the general Mongolian population.
 
A total of 344 Mongolian volunteers, aged 18-69 years, without CVD and on no medication, were recruited from a health screening setting. The current smoking habits, body mass index, mean blood pressure (MBP), blood total cholesterol (TC), glucose, insulin and carotid IMT (maximum level) were measured.
 
Mongolian males had a significantly higher prevalence of current smoking and a higher level of IMT than females (average=0.58 mm in males vs 0.46 in females). Both a single and multiple regression analysis adjusted for all the regression analysis adjusted for all the measures revealed that IMT was significantly and positively correlated with age, male sex, MBP, TC and glucose among all of the participants. IMT was significantly and positively correlated with age, followed by MBP, TC and glucose among males, while among females, IMT was significantly and positively correlated with age, followed by MBP and TC.
 
Age was the strongest determinant of carotid atherosclerosis, and the increases in blood pressure and cholesterol levels were also important measures in both sexes as well as glucose levels in males in particularly, thus suggesting a preventive strategy necessary for CVD in the general Mongolian population.
		                        		
		                        		
		                        		
		                        	
6. Determinants of carotid atherosclerosis in the general Mongolinan population using ultrasonography
Uurtuya SHUUMARJAV ; Kazuhiko KOTANI ; Hideki YOSHIOKA ; Dagdanbazar NYAMDORJ ; Toshiyuki YAMADA ; Nobuyuki TANIGUCHI
Innovation 2013;7(1):44-47
		                        		
		                        			
		                        			 Atherosclerotic risk factors contribute to carotid atherosclerosis. Carotid intima-media thickness (IMT), as assessed using a non-invasive high-resolution ultrasound, can predict cardiovascular disease (CVD). Whereas the control of CVD is crucial for the Mongolian people, the studies on carotid atherosclerosis are lacking. The present population-based survey was a cross-sectional investigation of the determinants of carotid IMT in the general Mongolian population.A total of 344 Mongolian volunteers, aged 18-69 years, without CVD and on no medication, were recruited from a health screening setting. The current smoking habits, body mass index, mean blood pressure (MBP), blood total cholesterol (TC), glucose, insulin and carotid IMT (maximum level) were measured.Mongolian males had a significantly higher prevalence of current smoking and a higher level of IMT than females (average=0.58 mm in males vs 0.46 in females). Both a single and multiple regression analysis adjusted for all the regression analysis adjusted for all the measures revealed that IMT was significantly and positively correlated with age, male sex, MBP, TC and glucose among all of the participants. IMT was significantly and positively correlated with age, followed by MBP, TC and glucose among males, while among females, IMT was significantly and positively correlated with age, followed by MBP and TC.Age was the strongest determinant of carotid atherosclerosis, and the increases in blood pressure and cholesterol levels were also important measures in both sexes as well as glucose levels in males in particularly, thus suggesting a preventive strategy necessary for CVD in the general Mongolian population. 
		                        		
		                        		
		                        		
		                        	
7.Intervention of a clinical psychologist in the treatment of an autistic patient with pancreatic cancer: a report on a surgical case
Naoko Nagai ; Kazuhiko Hashimoto ; Hatsumi Izawa ; Tomoko Yamada ; Noriko Honda ; Atsushi Naito ; Yuko Itani ; Yo Sasaki
Palliative Care Research 2010;5(2):323-326
		                        		
		                        			
		                        			Case: A 40-year-old woman. Clinical diagnosis: Autistic disorder with mild mental retardation. Case report: The patient underwent pancreaticoduodenectomy for the treatment of her pancreatic cancer. We held several conferences with individuals from different medical fields and examined the influence of the patient's autistic disorder on the perioperative conditions. The senior author, a clinical psychologist, conducted repeated individual, acceptive, and sympathetic interviews with the patient and her family and maintained supportive relationships with them as an honorary family member. Thus, the clinical psychologist helped reduce the patient's anxiety about the medical treatment. Conclusion: The participation of a clinical psychologist in the medical conferences enabled the medical staff to understand the complications involved and provide mental support to the patient and her family. Palliat Care Res 2010; 5(2): 323-326
		                        		
		                        		
		                        		
		                        	
8.Anti-Human Cytomegalovirus Activity of Chemical Constituents from Kumazasa Hot Water Extract
Kazuhiko AKUZAWA ; Rie YAMADA ; Changxiao BI ; Hidetaka SADANARI ; Keiko MATSUBARA ; Yuuzou TSUCHIDA ; Kunitomo WATANABE ; Masayuki NINOMIYA ; Mamoru KOKETSU ; Tsugiya MURAYAMA
Japanese Journal of Complementary and Alternative Medicine 2010;7(1):25-33
		                        		
		                        			
		                        			Objective: Anti-human cytomegalovirus (HCMV) activity of 5 compounds, especially tricin, isolated from Kumazasa extract were investigated in the human embryonic lung (HEL) fibroblast cell.
 Method: This study examined the effect of tricin on HCMV replication, viral-specific major immediate early (IE) gene expression, and protein synthesis.
 Results: Pretreatment of HEL cells before HCMV infection with tricin inhibited viral production in a dose-dependent manner, as well as posttreatment of HCMV-infected HEL cells with tricin. Real-time RT-PCR assay and Western blotting analysis indicated that tricin decreased expression of the HCMV IE gene in virus-infected HEL cell.
 Conclusion: These date suggest that the primary mechanism of anti-HCMV activity for tricin, isolated from Kumazasa hot water extract, inhibit IE gene expression.
		                        		
		                        		
		                        		
		                        	
9.Effects of puerariae radix on bone density and bone microarchitecture in castrated mice with osteoporosis
Xinxiang WANG ; Yunling ZHANG ; Jian WU ; Hiroshige CHIBA ; Yamada KAZUHIKO ; Yoshiko ISHIMI
Chinese Journal of Tissue Engineering Research 2010;14(7):1262-1266
		                        		
		                        			
		                        			BACKGROUND: Studies confirmed that pueraria can not only prevent the reduced bone mineral density and bone mass in the ovadectomy-caused estrogen deficiency mice with osteoporosis model, also improve bone micro-structure, it can be used for osteoporosis prevention and treatment in women after menopause. Does it exhibit a similar effect fpr the treatment of male osteoporosis?OBJECTIVE: To investigate the influence of puerariae Radix (PR) crude drug on the bone mineral density (BMD) and bone micro-architecture in androgen-deficiency mice with osteoporosis model.METHODS: A total of 48 ddY male mice, aged 8 weeks and weighing 32-35 g, were randomly divided into 6 groups: sham group,orchidectomized group, PR with low, middle and high dose group, 17β-estradiol group. Each group contained 8 mice. In sham group, mice were sham operated to expose testis and epididymis, removing surrounding fat tissue; in other groups, mice were orchidectomized. After operation, sham group and model group were fed normal diet, while PR with low, middle and high dose groups were fed a diet containing 5%, 10% and 20% PR, and 17β-estradiol group was fed a normal diet with subcutaneous administration of 17β-estradiol 0.03μg/d. The diet dosage was all 4.0 g/d. Four weeks after experiment, the mice were anesthetized and killed, and the weight of the seminal vesicle was measured. Dual-energy X-ray was used to detect BMD in femurs, and micro-CT analysis for distal femur metaphysis sponge bone microstructura.RESULTS AND CONCLUSION: The whole femoral BMD was significantly decreased by 10.9% in the model group, and the decrease in BMD was completely prevented by intake of the diet with the low dose of PR. Intake of the diet with the middle dose of PR further increased BMD in the model group, but no significant differences were observed. Furthermore, the high dose of PR administration significantly increased BMD by 26.1% and 12.4% respectively compared with model group and sham operated group, and the potency was similar to that of 17β-estradiol. Intake of the diet with the low dose of PR completely prevented the decrease in trabecular bone volume and trabecular number, and restored the increase in trabecular separation in mice caused by androgen deficiency. Intake of the diet with the middle dose of PR could enhance the inhibition effect, but there was no significant difference; intake of the diet with the high dose of PR exhibited the strongest effect on the inhibition, it further significantly increased trabecular bone volume and trabecular number compared with sham operated group. The seminal vesicle was not affected by the administration of any doses of PR. Without influence on the seminal vesicle, the low and middle dose of PR can completely inhibit the decreasing BMD and bone mass caused by androgen deficiency in mice, as well as improve bone structure,high dose of PR exhibits a significant effect and similar to 17β-estradiol.
		                        		
		                        		
		                        		
		                        	
10.Anti-human Cytomegalovirus Activity of Hot Water Extract from Sasa senanensis Rehder
Rie YAMADA ; Kazuhiko AKUZAWA ; Changxiao BI ; Zhuan LI ; Hidetaka SADANARI ; Keiko MATSUBARA ; Tsugiya MURAYAMA
Japanese Journal of Complementary and Alternative Medicine 2009;6(1):17-25
		                        		
		                        			
		                        			Objective: Anti-Human cytomegalovirus (HCMV) activity of Kumazasa (Sasa senanensis Rehder) extract were investigated in the human embryonic lung (HEL) fibroblast cell.
 Method: This study examined the effect of hot water extract from Sasa senanensis Rehder on HCMV replication, viral-specific major immediate early (IE) gene expression, and protein synthesis.
 Results: Treatment of HCMV-infected HEL cells with that Sasa senanensis Rehder extract inhibited the cytopathic effect and viral production in a dose-dependent manner. Further, real-time RT-PCR assay and Western blotting analysis revealed that Sasa senanensis Rehder extract decreased expression of the HCMV IE gene in virus-infected HEL cell.
 Conclusion: These results suggest that Sasa senanensis Rehder extract have anti-HCMV activity by inhibitting of IE gene expression.
		                        		
		                        		
		                        		
		                        	
            

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