Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
ISSN-L : 0918-2918
Volume 48 , Issue 4
Showing 1-13 articles out of 13 articles from the selected issue
EDITORIAL
ORIGINAL ARTICLES
  • Anastasios Koutsovasilis, John Protopsaltis, Filippos Triposkiadis, St ...
    2009 Volume 48 Issue 4 Pages 179-187
    Published: 2009
    Released: February 16, 2009
    JOURNALS OPEN ACCESS
    Objective The value of the recently introduced definitions of metabolic syndrome (MetS) in the identification of high cardiovascular risk subjects remains questionable. We examined the association among different definitions of MetS, and the occurrence of a first-ever acute coronary syndrome (ACS).
    Methods We studied 211 patients with a first-ever ACS and 210 control subjects. We recorded cardiovascular risk factors and the presence of MetS using 3 different definitions, according to the National Cholesterol Education Program Adult Treatment Panel (NCEP-ATP) III, National Heart, Lung and Blood Institute/American Heart Association (NHLBI/AHA), and International Diabetes Federation (IDF), respectively. The association of MetS with ACS was assessed using univariate and multivariate logistic regression models after adjusting for potential confounding factors, such as gender, age, body mass index, hypertension, diabetes mellitus, and lipids.
    Results ACS cases had a prevalence of metabolic syndrome according to NCEP-ATP III, NHLBI/AHA, and IDF criteria of 72.5%, 81.2%, and 79.1%, respectively. The unadjusted odds ratio (OR) for a first-ever ACS were 2.32 (95% CI: 1.53-3.52, p=0.001), 2.82 (95% CI: 1.79-4.43, p=0.001), and 3.26 (95% CI: 2.12-5.00, p=0.001) for NCEP-ATP III, NHLBI/AHA, and IDF MetS definitions, respectively. Multivariate analyses revealed that only IDF-defined MetS was significantly associated with ACS (OR: 2.23 95% CI: 1.30-3.82, p=0.003), while of the MetS components only waist circumference remained independently associated with ACS (O.R: 1.045 95% CI: 1.014-1.078, p=0.005).
    Conclusion The definition of MetS according to the IDF criteria appears to be a better predictor of ACS than NCEP-ATP III and NHLBI/AHA.
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  • Naoyuki Yamamoto, Masao Toyoda, Makiko Abe, Takako Kobayashi, Keiko Ko ...
    2009 Volume 48 Issue 4 Pages 189-194
    Published: 2009
    Released: February 16, 2009
    JOURNALS OPEN ACCESS
    Objective Diabetic nephropathy (DN) is a common cause of end-stage renal disease. However, the precise mechanism of DN, which involves the role of lipid, is still not fully understood. Lectin-like oxidized LDL receptor-1 (LOX-1) is a type II single-transmembrane protein that binds oxidized low density lipoprotein (Ox-LDL). This study examined the expression of LOX-1 mRNA in renal tissues from type 2 diabetes patients with DN using in situ hybridization (ISH).
    Patients and Methods Renal tissues were obtained from 15 type 2 patients with DN and 5 minimal change nephrotic syndrome (MCNS), membranous nephropathy (MN) and normal human kidney (NHK). Glomerular and tubulointerstitial LOX-1 mRNA expression was evaluated by ISH.
    Results The cells positive for LOX-1 mRNA were identified in the glomeruli of DN, MCNS, MN and NHK, however, there was no positive signal in the tubulointerstitial area in MCNS and NHK. Some cells positive for LOX-1 mRNA were detectable in the tubulointerstitial area in DN and MN. In the results of glomerular staining, there was no significant difference between them. There was a significant correlation between the tubulointerstitial LOX-1 expression and the degree of the tubulointerstitial damage and urinary protein in DN.
    Conclusion Increased expression of LOX-1 mRNA in the tubulointerstitial area may be closely linked to the development and progression of human DN, and in particular the tubulointerstitial damage.
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  • Hideta Nakamura, Masao Tateyama, Daisuke Tasato, Syusaku Haranaga, Sat ...
    2009 Volume 48 Issue 4 Pages 195-202
    Published: 2009
    Released: February 16, 2009
    JOURNALS OPEN ACCESS
    Objective New serum markers (1→3) β-D-glucan (β-D-glucan) and KL-6 are reported to be useful for the clinical diagnosis of Pneumocystis jirovecii pneumonia (PCP). However, the utility of these markers in PCP with HIV infection (HIV PCP) and without HIV (non-HIV PCP) is unknown. This study was aimed to evaluate the utility of β-D-glucan and KL-6 for the diagnosis of PCP in patients with HIV infection (HIV PCP) and non-HIV PCP.
    Methods Retrospective study
    Patients We reviewed the medical records of consecutive 35 patients. The serum levels of β-D-glucan and KL-6 in HIV PCP and non-HIV PCP were comparatively evaluated. We evaluated these markers in survivors and non survivors.
    Results The detection rates of serum β-D-glucan and KL-6 levels in non-HIV PCP were lower than those in HIV PCP (88% vs. 100%, 66% vs. 88%, respectively). The false positive rates of these markers in both groups were similar (12%, 37%, respectively). Oxygenation index, serum albumin, and mechanical ventilation were the variables which were significantly associated with poor outcome in the univariate analysis.
    Conclusion In conclusion, β-D-glucan was a reliable diagnostic marker for PCP. However, the detection rate of β-D-glucan and KL-6 in non-HIV PCP was lower than in HIV PCP. Neither β-D-glucan nor KL-6 was associated with the outcome of PCP.
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  • Yoshiki Hayashi, Hideyuki Kuriyama, Hajime Umezu, Junta Tanaka, Tatsuy ...
    2009 Volume 48 Issue 4 Pages 203-208
    Published: 2009
    Released: February 16, 2009
    JOURNALS OPEN ACCESS
    Objective To assess the relationship between in vitro chemosensitivity evaluated by the histoculture drug response assay (HDRA) and the expression of β-tubulin isotypes in tumors of patients with completely resected NSCLC in order to determine the predictive value of β-tubulin in chemotherapy for NSCLC.
    Methods Expression of β-tubulin isotypes was immunohistochemically analyzed in a series of 58 tumor samples from patients with completely resected NSCLC. The sensitivity of individual tumors to anticancer agents was evaluated by HDRA.
    Results Class III β-tubulin expression by tumor cells was significantly correlated with resistance to docetaxel (p=0.0250), but not related with resistance to gemcitabine. Patient characteristics (age, gender, histology, and stage) were not associated with class III β-tubulin expression.
    Conclusion An abundance of class III β-tubulin in tumor cells could be a biomarker for resistance to docetaxel in patients with completely resected NSCLC.
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  • Yoichiro Nishida, Yuki Saito, Takanori Yokota, Takashi Kanda, Hidehiro ...
    2009 Volume 48 Issue 4 Pages 209-212
    Published: 2009
    Released: February 16, 2009
    JOURNALS OPEN ACCESS
    Background Conventional magnetic resonance imaging (MRI) sequences of patients with complex regional pain syndrome (CRPS) have shown abnormal signals in skin, soft tissue, joints, bone, and bone marrow, but not yet in skeletal muscles, during the acute phase. The aim of this study was to clarify whether or not the affected muscles in CRPS patients show abnormal MRI signal intensities or signal enhancement by gadolinium dimeglumine during the acute phase.
    Patients and Methods MRI studies of skeletal muscles were performed on three patients of CRPS. Out of three patients, MRI was performed on three at stage 1, one in improving phase, two in remission phase, and one at stage 3. MRI was performed in the transaxial plane with both T2-weighted imaging (T2WI) and fat-suppressed T1-weighted imaging (T1WI) with or without gadolinium dimeglumine enhancement.
    Results All patients at stage 1 showed hyperintense muscle signals on T2WI and gadolinium dimeglumine enhancement on T1WI. Following clinical improvement, the hyperintense lesions reverted to near normal. Muscles in the chronic phase showed high signals on both T2WI and T1WI without gadolinium dimeglumine enhancement.
    Conclusion MRI abnormalities in the acute phase are consistent with muscular edema, interstitial edema, and vascular hyperpermeability. These MRI findings suggest the presence of hemodynamic abnormalities caused by microangiopathy, sympathetic abnormalities, or both, which may lead to ischemia of affected muscles. Chronic phase abnormalities indicated the presence of muscle atrophy and fibrosis or fatty infiltration of the affected muscle.
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CASE REPORTS
  • Ken-ichi Hiasa, Masao Takemoto, Ryuichi Matsukawa, Tetsuya Matoba, Tak ...
    2009 Volume 48 Issue 4 Pages 213-217
    Published: 2009
    Released: February 16, 2009
    JOURNALS OPEN ACCESS
    We encountered a case of exercise-induced chest pain after the implantation of sirolimus-eluting stents (SESs). She had no history of previous chest pain, and an exercise stress test just after the implantation of the SESs was negative without any symptoms. However, six months after the implantation of the SESs, she began to experience frequent episodes of severe chest pain on effort in spite of there being no significant coronary stenosis. Interestingly, severe coronary vasoconstriction was induced by an intracoronary administration of acetylcholine, and exercise stress testing revealed positive findings with chest pain and ST-T segment depression on ECG. An intensive treatment with two types of calcium channel blockers could readily and completely abolish the exercise-induced chest pain and ST-T segment depression on the ECG. In view of these findings, we presumed that coronary microvessel dysfunction and/or exercise-induced coronary vasoconstriction leading to myocardial ischemia had appeared 6 months after the implantation of the SESs. Although the pathogenesis of this phenomenon could not be completely elucidated, the anatomical and functional abnormalities of the coronary arteries associated with the implantation of the SESs may have been one of the most important mechanisms.
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  • Atsushi Goto, Yoshihiko Takahashi, Miyako Kishimoto, Shigeru Minowada, ...
    2009 Volume 48 Issue 4 Pages 219-223
    Published: 2009
    Released: February 16, 2009
    JOURNALS OPEN ACCESS
    A 55-year-old Japanese man was admitted to our hospital with severe weakness. Without measurement of serum electrolyte concentrations, diuretic therapy for hypertension was started 2 weeks prior to admission. Laboratory findings showed profound hypokalemia (1.4 mEq/L), and extreme elevation of the serum creatinine phosphokinase levels (15,760 IU/L), suggesting that the patient had hypokalemic paralysis and hypokalemia-induced rhabdomyolysis. Further evaluations, including adrenal venous sampling strongly suggested that he had primary aldosteronism. He was treated successfully by laparoscopic adrenalectomy. This case provides an important lesson that serum electrolyte concentrations should be measured in hypertensive patients before the administration of antihypertensive agents.
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  • Hidefumi Inaba, Satoru Suzuki, Satoshi Shigematsu, Satoshi Kobayashi, ...
    2009 Volume 48 Issue 4 Pages 225-229
    Published: 2009
    Released: February 16, 2009
    JOURNALS OPEN ACCESS
    Central nervous system (CNS) sarcoidosis is a crucial disease and has a poor prognosis. A 58-year-old woman had acute development of polydipsia and polyuria. Her pituitary MRI demonstrated a swelling of pituitary gland and hypophyseal stalk. She was diagnosed as central diabetes insipidus (CDI) due to CNS sarcoidosis based on the examinations and pituitary MRI findings as well as a result of cutaneous biopsy. Uveitis and bilateral hilar lymphadenopathy were observed mildly throughout. However, CDI and pituitary MRI findings were getting recovered spontaneously without steroid treatment in a couple of months, suggesting an atypical clinical course of CNS sarcoidosis.
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  • Ayhan Zengi, Muammer Karadeniz, Gulgun Demirpolat, Aysegul Akgun, Sule ...
    2009 Volume 48 Issue 4 Pages 231-234
    Published: 2009
    Released: February 16, 2009
    JOURNALS OPEN ACCESS
    We report a 59-year-old woman who had Hashimoto's thyroiditis (HT) with hypothyroidism. A solid hypervascularized nodule in the right lobe was detected by color flow doppler sonography (CFDS). Thyroid 99mTc pertechnetate scintigraphy revealed a hot area in the right lobe. After three months, thyroid function tests also revealed hypothyroidism and 131I scintigraphy was similar to the previous scintigraphy. No nodular or hypervascularized lesion in the right lobe could be identified at the sixth month of L-T4 substitution therapy. In conclusion, HT may present as a single hot nodule and hypothyroidism. Imaging findings of HT should be carefully evaluated for the precise diagnosis.
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  • Takeshi Nigawara, Satoru Sakihara, Kazunori Kageyama, Ken Terui, Shino ...
    2009 Volume 48 Issue 4 Pages 235-240
    Published: 2009
    Released: February 16, 2009
    JOURNALS OPEN ACCESS
    A 68-year-old woman was referred for characterization of a left adrenal incidentaloma. Endocrinological examinations indicated subclinical Cushing's syndrome, whereas the large volume (10 cm in diameter) and heterogeneous configuration of the tumor raised a strong suspicion of adrenal carcinoma. Hence, left adrenalectomy was performed. Histopathologically, this lesion was a thick hyaline-walled endothelial cyst, flanked with a compressed adrenocortical adenoma. The puzzling image resemblance of a variation of adrenal cyst to carcinoma necessitated histological examination for confirmative diagnosis. This is the first reported case of adrenal endothelial cyst associated with adrenocortical adenoma, the former of which alone is a rarity.
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  • Keiko Kinomoto, Yoshinobu Okamoto, Yuichiro Yuchi, Masaru Kuriyama
    2009 Volume 48 Issue 4 Pages 241-243
    Published: 2009
    Released: February 16, 2009
    JOURNALS OPEN ACCESS
    We describe the case of a 36-year-old woman who developed acute encephalo-myelitis after acute viral hepatitis type B. She was admitted to the hospital with a history of general malaise and nausea of 5 days duration. Her serum showed high transaminase levels and positive HBs-Ag and increased IgM HBc-Ab titers. She had urinary dysfunction, myoclonus and postural tremor of her extremities. Several days later, she developed bilateral limb ataxia and alteration of consciousness. The cerebrospinal fluid examinations showed pleocytosis and increased protein. Treatment with high-dose methylprednisolone resulted in a marked improvement of the clinical and CSF examination. Magnetic resonance imaging of the brain and the spinal cord did not disclose abnormal lesions. The symptoms and clinical course were quite similar to those of acute disseminated encephalomyelitis.
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  • Takashi Hirose, Noboru Ishikawa, Kenji Hamada, Tomoko Inagaki, Sojiro ...
    2009 Volume 48 Issue 4 Pages 245-249
    Published: 2009
    Released: February 16, 2009
    JOURNALS OPEN ACCESS
    We report on a 45-year-old woman with intimal sarcoma of the pulmonary artery. She presented with a chief complaint of shortness of breath. Computed tomography (CT) of the chest showed an intraluminal hypoattenuated area extending from the main pulmonary artery into the right main pulmonary artery and bilateral lobar pulmonary arteries. She underwent resection of the lobulated mass from the pulmonary artery. The tumor was diagnosed as an intimal sarcoma. Although she received chemotherapy with amrubicin and carboplatin when the tumor recurred, the tumor enlarged. After radiotherapy was performed, CT of the chest showed shrinkage of the tumor and the regression of consolidation and ground-glass opacity. Radiotherapy and chemotherapy are treatment option for patients with pulmonary artery sarcoma.
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