Yoshiaki Somekawa

JA Toride Medical Center, Torite, Ibaraki, Japan

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Publications (18)47.07 Total impact


  • No preview · Article · May 2015 · Maturitas
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    ABSTRACT: A 32-year-old woman underwent the laparoscopic ovarian cystectomy. During the operation, adrenaline was injected into her right ovary, because the amount of bleeding decreased. Soon after the injection, ventricular tachycardia occurred and her blood pressure increased to 190/125. The use of lidocaine induced the electrocardiogram to return to normal and brought down the blood pressure to a normal range. The operation was finished without hitch. Vasopressin has both an excellent hemostatic effect and cardiovascular side effects, and is often used at many medical facilities in Japan. But the treatment with vasopressin is neither covered by health insurance nor the relief system for sufferers from adverse drug reactions. So we usually use adrenaline which is insurable at laparoscopic operations. Adrenaline has also a hemostatic property, and causes severe cardiovascular adverse events such as ventricular tachycardia when used together with halogenated inhalation anesthetic. The Japanese Society of Anesthesiologists concludes that no serious side effects will arise from using adrenalin and sevoflurane or isoflurane based on its own findings. We had a case with ventricular tachycardia which occurred after an adrenaline local injection. But we recommend a careful use of adrenaline for local injection during a laparoscopic operation.
    Preview · Article · Jan 2015 · JOURNAL OF THE JAPANESE ASSOCIATION OF RURAL MEDICINE
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    ABSTRACT: Objective: We report a case of laparoscopic implantation of a subcutaneous peritoneal catheter port performed for advanced ovarian carcinoma. Patient: A 51-year-old female patient was admitted because of an abnormality of the cytology. Magnetic resonance imaging showed solid tumors of both ovaries. Massive ascites and disseminations showed peritonitis carcinomatosa. Primary debulking surgery was performed, but optimal surgery was impossible. Histopathological examination revealed that the surgical specimen was serous cystadonocarcinoma. Partial response was observed after six courses of paclitaxel-carboplatin-based systemic chemotherapy following the operation. Dissemination still remained although ascites had disappeared. As such intraperitoneal injection was chosen as the second line chemotherapy. Laparoscopic implantation of a subcutaneous peritoneal catheter port was selected as the operation method in order to resume the chemotherapy immediately after the operation. The catheter was inserted to avoid the disseminated parts under the laparoscopic observation, and the catheter tip was fixed under the right diaphragm. The postoperative course was fair, and the second line of chemotherapy was administered soon, thereafter.Conclusion: Laparoscopic implantation of a subcutaneous peritoneal catheter port was useful as a method in the case where it was not performed at the time of the first operation.
    No preview · Article · Jan 2010
  • Hidenori Umeki · Akiko Furusawa · Daigo Sato · Yoshiaki Somekawa
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    ABSTRACT: A 16-year-old female patient presented with chief complaints of secondary amenorrhea for 7 months and low abdominal mild pain. Magnetic resonance imaging, computed tomography, and ultrasonography showed a polycystic tumor of the right ovary about 5 cm in diameter with slight septal thickening and a thickening of the endometrium. The thickening of the endometrium persisted until the first surgical procedure. A benign ovarian cyst was diagnosed, with a mucinous cyst adenoma the most likely diagnosis. She underwent a laparoscopic cystectomy. The histopathologic examination revealed a granulosa cell tumor (adult type) . Post-operative magnetic resonance imaging after showed no evidence of recurrence. A laparoscopic oophorectomy was performed 4 months after the first operation, at which time no recurrent lesions were identified. The residual right ovary had no granulosa cell tumor on histopathologic findings. No adjuvant treatment was administered. After the first operation, the patient's menstrual cycles became regular. She is alive and well 2 years after the second surgery with no evidence of recurrence.A polycystic ovarian tumor and abnormal menstruation, especially with persistent thickening of the endometrium, is possibly a granulosa cell tumor. In such a case, a laparotomy, not a laparoscopy, is the operative method of choice.
    No preview · Article · Jan 2008

  • No preview · Article · Jan 2007 · Journal of Rural Medicine
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    ABSTRACT: Primary paraovarian cancer is a rare tumor occurring in the female pelvis. Magnetic resonance imaging features of paraovarian cancer have not been previously reported. In the present report, we describe a case of paraovarian cancer coexisting with cancer of the fallopian tube and the magnetic resonance features.
    No preview · Article · Sep 2005 · Acta Radiologica
  • Yoshitaka Fujii · Hiroyoshi Tanaka · Yoshiaki Somekawa
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    ABSTRACT: Postoperative emetic symptoms (nausea, retching, and vomiting) frequently occur in women undergoing general anesthesia for abdominal hysterectomy. In a previous report by us, granisetron, a selective serotonin receptor antagonist, was more effective than the traditional antiemetics, droperidol and metoclopramide, for the treatment of postoperative emetic symptoms in this population. The aim of this study was to determine the optimal dose of granisetron for the treatment of emetic symptoms following abdominal hysterectomy. This randomized, double-blind, placebo-controlled, dose-ranging study was conducted at Toride Kyodo General Hospital (Toride, Japan). Female patients aged 33 to 66 years experiencing postoperative emetic symptoms after abdominal hysterectomy were eligible for the study. Patients received IV granisetron at 1 of 4 doses (10, 20, 40, or 100 μg/kg) or placebo; they were then observed for 24 hours. Emetic symptoms and the need for a rescue antiemetic were recorded by nursing staff, who were blinded to treatment assignment. A total of 100 patients (mean [SD] age, 45 [7] years [range, 33-66 years]) were enrolled (n = 20 in each group). No significant differences in patient demographic characteristics were observed between the groups. The number of patients in whom complete control of postoperative emetic symptoms, defined as being free of emetic symptoms and not needing rescue antiemetic medication for 24 hours after study drug administration, was established was significantly greater in 3 of the granisetron groups than in the placebo group (6 patients [30%]): granisetron 10 μg/kg, 7 patients (35%; P= NS); granisetron 20 μg/kg, 17 patients (85%; P = 0.001); granisetron 40 μg/kg, 17 patients (85%; P = 0.001); and granisetron 100 μg/kg, 16 patients (80%; P = 0.002). No clinically significant adverse events attributable to the study drug were observed in any group. In this study of patients who experienced emetic symptoms after undergoing general anesthesia for abdominal hysterectomy, granisetron at doses ≥20 μg/kg was effective in the treatment of established postoperative emetic symptoms.
    No preview · Article · Jul 2004 · Current Therapeutic Research
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    Y Fujii · H Tanaka · Y Somekawa
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    ABSTRACT: Women undergoing general anesthesia for dilatation and curettage have a high risk for postoperative nausea and vomiting. We therefore evaluated the efficacy and safety of ramosetron, a new compound having serotonin receptor antagonist activity, for preventing nausea and vomiting in termination of pregnancy. Eighty women scheduled for dilatation and curettage received, in a randomized, double-blind manner, an intravenous placebo or ramosetron at three different doses (0.15 mg, 0.3 mg, 0.6 mg) at the end of surgery (n = 20 per group). Emetic episodes and safety were assessed. The percentage of patients who were emesis-free (no nausea, no retching, no vomiting) during 0-24 h after anesthesia was 55% with ramosetron 0.15 mg (P = 0.5), 85% with ramosetron 0.3 mg (P = 0.02), and 90% with ramosetron 0.6 mg (P = 0.007), compared with 50% in the placebo group. No clinically serious adverse events due to the study drugs were observed in any group. Our results suggest that ramosetron 0.3 mg is an effective antiemetic for prophylaxis against emetic symptoms after dilatation and curettage. Increasing the dose to 0.6 mg provides no further benefit.
    Preview · Article · Feb 2004 · International Journal of Obstetric Anesthesia
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    ABSTRACT: The aim of the present study was to examine the usefulness of neoadjuvant intraarterial chemotherapy (NAC) using nedaplatin as key drug to improve the prognosis in case of advanced cervical cancer. Twenty-five cases of advanced cervical cancer (15 cases of stage II with high risks, 10 of stage III, referred to as the 254-S group) treated by NAC using nedaplatin, mitomycin C and peplomycin were compared with 30 cases (22 cases of stage II with high risks, 8 of stage III, referred to as the CDDP group) treated using cisplatin and mitomycin C which is the conventional regimen, in terms of measurable response, pathological response, rate of lymph node metastasis, cumulative survival rate, side effects and relapse style. According to the evaluation by measurable responses, the response rate was 90% (CR 52%) in the 254-S group and 75% (CR 15%) in the CDDP group. For pathological response of the specimen, the CR rate was 16% in the 254-S group and 23% in the CDDP group. The rate of lymph node metastasis extracted surgically was 33% and 41%, respectively. The cumulative survival rate in the 254-S group was about 10% better than in the CDDP group, but no significant difference was found. Leucopenia of both groups was of the same grade. In the 254-S group, although thrombocytopenia was more critical than in the CDDP group, there was a slight tendency to kidney toxicity. The locoregional recurrence rate was 12% in the 254-S group and 30% in the CDDP group. The distant metastasis rate was 16% and 27%, respectively. Although neoadjuvant intraarterial chemotherapy using nedaplatin as a key drug was useful to improve the prognosis of advanced cervical cancer, measures against recurrence outside the pelvis and individualization of medical treatment were considered to lead to a further improvement of the prognosis.
    No preview · Article · Apr 2003 · Gan to kagaku ryoho. Cancer & chemotherapy
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    ABSTRACT: The purpose of this study was to evaluate the relationships among hepatic lipase (HL) polymorphism, serum lipids, lipoproteins, and remnant-like particle cholesterol (RLP-C) and to determine the effects of hormone replacement therapy (HRT). We assessed the HL polymorphism in 209 postmenopausal Japanese women. Levels of serum total cholesterol, low density lipoprotein (LDL) cholesterol, high density lipoprotein (HDL) cholesterol, triglycerides, apolipoprotein (Apo) AI, Apo B, Apo E, Apo CII, Apo CIII, and RLP-C were measured before and after 3 months of HRT. The frequency of each genotype was 32% for -514 C/C, 41% for C/T, and 27% for T/T. Subjects with the C/T and T/T genotypes had higher levels of HDL cholesterol and Apo AI than those with the C/C genotype. Those with the T/T genotype had higher levels of RLP-C than those with the C/C or C/T genotype. Serum total cholesterol, LDL cholesterol, Apo B, Apo E, and Apo CII were decreased, and HDL cholesterol and Apo AI were increased significantly in all genotypes after 3 months of HRT. There were no differences in these changes with genotype. The HL polymorphism was associated with higher levels of HDL cholesterol, Apo AI, and RLP-C, and the HL gene variation may contribute to HL activity and affect serum lipoprotein metabolism. Effects of HRT on serum lipids, lipoproteins, and remnant lipoprotein metabolism were unaffected by the HL polymorphism.
    Preview · Article · Nov 2002 · Journal of Clinical Endocrinology & Metabolism
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    ABSTRACT: Hepatic lipase (HL) is a lipolytic enzyme that catalyzes hydrolysis of triglycerides and phospholipids in all major classes of lipoproteins. Recently, a -514C/T polymorphism in the promoter region of the HL gene was found to be associated with variations in hepatic lipase activity and serum high density lipoprotein cholesterol (HDL-C) levels. Postmenopausal hormone replacement therapy (HRT) has known favorable effects on serum lipid and lipoprotein levels. In this study, we examined the relation between the -514C/T polymorphism and serum lipid and lipoprotein levels in postmenopausal women prior to and after 3 months of HRT. Significant associations between the -514 C/T polymorphism and HDL-C, low density lipoprotein cholesterol (LDL-C) and apolipoprotein A-I (apo A-I) levels were observed before and/or after 3 months of HRT. With HRT, serum total cholesterol (TC), LDL-C and apolipoprotein B (apo B) levels were reduced significantly (P=0.0001), and HDL-C and apo A-I levels were increased significantly (P=0.0001). However, the degrees of change in lipid and lipoprotein levels due to HRT did not differ significantly between the HL genotypes.
    No preview · Article · Jun 2002 · Atherosclerosis
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    ABSTRACT: To evaluate the relationships among the methylenetetrahydrofolate reductase (MTHFR) polymorphism, plasma folate, total homocysteine (Hcy) levels, lipids, and the reduction of Hcy levels resulting from hormone replacement therapy (HRT). Clinical study. Outpatient department of obstetrics and gynecology in a general hospital. Two hundred seventeen postmenopausal Japanese women. Of the 217 women, 172 patients were under continuous treatment with oral conjugated equine estrogen and medroxyprogesteron acetate. Fasting Hcy, folate, methionine, lipids, and apolipoproteins were measured before and after 3 months of HRT. The plasma Hcy concentration was significantly higher in the low folate than in the high-folate group only in patients with the homozygous (T/T) mutant. Plasma Hcy concentrations were significantly correlated with age (R = 0.64, P=.02) or years since menopause (R = 0.73, P=.02) only in the low-folate group with T/T. The plasma Hcy concentration decreased significantly in all genotypes after 3 months of HRT, but the levels of serum folate and methionine remained unchanged. The MTHFR polymorphism was associated with a higher Hcy concentration, and this association was related to the serum folate level. Hormone replacement therapy reduced the plasma Hcy concentration independently of the MTHFR polymorphism.
    No preview · Article · Apr 2002 · Fertility and Sterility
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    Yoshiaki Somekawa · Miki Chiguchi · Tomoko Ishibashi · Kimio Wakana · Takeshi Aso
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    ABSTRACT: The purpose of this study was to evaluate the efficacy of ipriflavone in preventing bone loss, decreasing in serum cholesterol and decreasing the rate of appearance of vasomotor symptoms, as well as the effects of ipriflavone on reduction of myoma volume by estrogen deficiency during treatment with the GnRH analog leuprolide. One hundred two women (mean age, 44.3 +/- 0.53 yr) receiving leuprolide therapy for uterine leiomyoma were randomly allocated to two groups (group A, leuprolide only; group B, leuprolide with ipriflavone). Bone mineral density of the lumbar spine was measured by dual-energy x-ray absorptiometry before and after treatment for 6 months. Levels of serum total cholesterol (TC), triglyceride (TG), high-density lipoprotein cholesterol, and low-density lipoprotein cholesterol (LDL-C) were measured before treatment and after 3 and 6 months of treatment. Subjects were asked to report the appearance of vasomotor symptoms throughout treatment. Myoma node volumes were measured before treatment and after treatment for 6 months. Bone mineral density was reduced in both groups, with reduction rates of -5.26% in group A and -3.70% in group B (P < 0.01 vs. group A). Changes in bone markers were not significant in either group. TC was significantly increased in both groups, and TG levels were increased significantly after 3 and 6 months of treatment in group A but not in group B. There was no significant difference between these two groups in amount of increase of either TC or TG. LDL-C levels were increased significantly after 3 and 6 months of treatment in both groups, and the differences between the groups (11.7% in group A vs. 7.5% in group B at 3 month and 22.6% in group A vs. 8.4% in group B at 6 month) were significant. Severe vasomotor symptoms were reduced in group B. The rates of reduction of myoma volume were 49.8% in group A and 52.9% in group B; this difference between groups was not significant. Ipriflavone efficaciously alleviated the adverse effects of estrogen deficiency such as bone loss and increase in LDL-C level, and the ability of leuprolide therapy to reduce myoma volume was not decreased by ipriflavone administration.
    Preview · Article · Aug 2001 · Journal of Clinical Endocrinology & Metabolism
  • Y Somekawa · M Chiguchi · T Ishibashi · T Aso
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    ABSTRACT: To evaluate the effects of dietary isoflavones in soy products on menopausal symptoms, lipid profiles, and bone mineral densities in postmenopausal Japanese women. We estimated the daily intakes of isoflavones in the diets of 478 postmenopausal Japanese women who reported soy consumption. We recorded serum values of fasting total cholesterol, triglyceride, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, and apolipoproteins. Bone mineral density was measured at the lumbar spine (L2-L4) by dual energy x-ray absorptiometry. Women were assigned to two groups according to years since menopause (early and late postmenopausal groups), and each group was subcategorized into four groups according to dietary isoflavone intake. Relationships between isoflavone intake, menopausal symptoms, lipid profiles, and bone mineral density were examined in each group. The mean estimated intake of isoflavones among 478 women was 54.3 mg/day. With stepwise regression analysis we found that weight and years since menopause were significant independent predictors of bone mineral density. Bone mineral densities adjusted to years since menopause and weight were significantly different in the highest intake compared with lowest intake category (P <.001) within the early and late postmenopausal groups. In the early postmenopausal group, significant differences were found in palpitation and backaches between the high and low intake categories but were not significant in the late postmenopausal group. High consumption of soy products is associated with increased bone mass in postmenopausal women and might be useful for preventing hypoestrogenic effects.
    No preview · Article · Jan 2001 · Obstetrics and Gynecology
  • Yoshitaka Fujii · Hiroyoshi Tanaka · Yoshiaki Somekawa
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    ABSTRACT: The aim of this study was to evaluate granisetron, droperidol, and metoclopramide for efficacy and safety in the treatment of established postoperative nausea and vomiting after major gynecologic surgery. One hundred twenty postoperative female patients were monitored for the first 3 hours after anesthesia in the postanesthesia care unit and for the next 24 hours after anesthesia in the ward. Patients who had postoperative nausea and vomiting within the first 3 hours after anesthesia received intravenously, in a randomized double-blind manner, 40 microg/kg granisetron, 20 microg/kg droperidol, or 0.2 mg/kg metoclopramide. Patients were then observed for 24 hours after drug administration. Complete control of established postoperative nausea and vomiting, defined as no emesis and no need for another rescue antiemetic medication, was more frequent among the patients who had received granisetron (88%) than among those who had received droperidol (55%) or metoclopramide (50%) (P <.05). The severity of nausea was less in patients who had received granisetron than in those who had received droperidol or metoclopramide (P <.05). No clinically adverse events were observed in any of the groups. Granisetron is more effective than droperidol or metoclopramide for the treatment of established postoperative nausea and vomiting during the first 3 hours after anesthesia in patients undergoing major gynecologic operations.
    No preview · Article · Feb 2000 · American Journal of Obstetrics and Gynecology
  • Yoshiaki Somekawa · Miki Chigughi · Misako Harada · Tomoko Ishibashi
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    ABSTRACT: The purpose of this study is to evaluate the efficacy of vitamin K2 and 1,25-dihydroxyvitamin D3 [1,25-(OH)2D3] in preventing bone loss induced by estrogen deficiency during therapy with the GnRH agonist (GnRH-a) leuprolide. One hundred ten women (mean age, 46.2+/-0.5 yr), receiving leuprolide therapy for estrogen-dependent diseases (such as endometriosis and uterine leiomyomas), were randomly allocated into four groups (group A, leuprolide only; group B, leuprolide with vitamin K2; group C, leuprolide with 1,25-(OH)2D3; and group D, leuprolide with vitamin K2 and 1,25-(OH)2D3). Bone mineral density of the lumbar spine was measured by dual-energy x-ray absorptiometry before and after 6 months of treatment. Bone formation and resorption markers were also measured before and after 6 months of treatment. There were no significant differences in the background parameters among the four groups. Bone mineral density was reduced in all four groups, but the percent changes varied slightly, at - 5.25% (group A), -3.72% (P < 0.05 vs. group A) (group B), -4.13% (group C), and -3.59% (P < 0.01 vs. group A) (group D), respectively. Bone formation markers were significantly increased in all four groups, and the percent changes of bone formation markers were highest in group B. Bone resorption markers also increased significantly in all four groups after treatment of 6 months. Group B tended to have the highest percent changes of bone resorption markers among the four groups, but these increases were not significantly different between any of the groups. Vitamin K2, especially when combined with 1,25-(OH)2D3, can partially prevent bone loss caused by estrogen deficiency. However, because this effect is attributable mainly to the activation of bone formation, it is not sufficient to eliminate bone loss induced by GnRH-a therapy.
    No preview · Article · Sep 1999 · Journal of Clinical Endocrinology & Metabolism
  • Yoshiaki Somekawa · Akira Wakabayashi
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    ABSTRACT: Menopausal women receive hormone replacement therapy (HRT) to relieve symptoms and to help prevent osteoporosis or atherosclerotic disease. We investigated the association of apolipoprotein (apo) E polymorphism with menopausal symptoms, body fat mass and lipid profile in 236 women, together with the lipid changes accompanying HRT administration in 172 women from this population who were postmenopausal. The subjects were divided into three groups according to apo E phenotype: group E2, apo E2/2 and 2/3; group E3, apo E3/3; group E4, apo E4/3 and 4/4. Typical menopausal symptoms were classified into four degrees of severity; body fat mass, lipid profile, and serum lipid levels were measured before and 6 months after oral HRT. There were no significant differences between the symptoms of the three groups. The serum levels of apo E were the highest in group E2 and lowest in group E4. Analogous tendencies were seen in the mean levels of total cholesterol (TC), low density lipoprotein cholesterol (LDL-C), and apo B, with group E4 having the highest levels and group E2 the lowest. Triglyceride levels (TG) were the highest in group E2, but the difference was not significant. These parameters suggest that group E4 had the highest risk of cardiovascular disease. The LDL-C/high density lipoprotein cholesterol (HDL-C) ratio was improved from 2.18 before HRT to 1.52 after HRT in group E2; from 2.26 to 1.92 in group E3; and from 2.57 to 2.10 in group E4. The apo E phenotype was not associated with any difference in menopausal symptoms. Group E4 had the highest risk for cardiovascular disease, and group E2 the lowest. Oral HRT could be recommended for the women in group E4.
    No preview · Article · Sep 1998 · European Journal of Obstetrics & Gynecology and Reproductive Biology
  • P.N.R. Pereira · S. Inokoshi · J. Tagami · Yoshiaki Somekawa · Akira Wakabayashi

    No preview · Article · Aug 1998 · European Journal of Obstetrics & Gynecology and Reproductive Biology