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Obayashi F, Koizumi K, Ito N, Obayashi N, Shintani T, Kajiya M, Yanamoto S. Skin Symptoms That Appeared after Fixation with a Titanium Plate in a Jaw Deformity Patient Suffering from Palmoplantar Pustulosis: A Case Report. Dent J (Basel) 2023; 11:257. [PMID: 37999021 PMCID: PMC10670456 DOI: 10.3390/dj11110257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/18/2023] [Accepted: 10/30/2023] [Indexed: 11/25/2023] Open
Abstract
Palmoplantar pustulosis (PPP) is a stubborn skin disease involving repeated aseptic small pustules on the palms and soles of the feet, which is triggered and exacerbated by metals and dental focal infections. There are few reports of an exacerbation of PPP symptoms after orthognathic surgery. The patient is a 40-year-old female who consulted an orthodontist at our hospital, complaining of a protruding maxilla and malocclusion. Under the diagnosis of skeletal prognathism, she underwent surgery for jaw deformity. Although no allergic symptoms were observed during the orthodontic treatment prior to surgery, postoperative scaling on the palms and soles of her feet worsened, and itching was observed on the skin, especially on the titanium plate used to secure the bone fragments. Under the diagnosis of metal allergy, treatment with steroids and vitamin D ointment failed to improve the condition, so surgery was performed to replace the metal plate with a non-metallic absorbable plate in the third postoperative month. Afterwards, the pruritus resolved, and erythema and scale on the palms and soles nearly disappeared. In the present case, though, oral bacterial infection, a past history of smoking, and stress from surgery were also considered to be possible causes of PPP exacerbation, and we concluded that one of the causes of PPP exacerbation was metal allergy from the plates or screws used to fix the bone fragments.
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Affiliation(s)
- Fumitaka Obayashi
- Department of Oral Oncology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan; (F.O.); (N.I.); (S.Y.)
| | - Koichi Koizumi
- Department of Oral Oncology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan; (F.O.); (N.I.); (S.Y.)
| | - Nanako Ito
- Department of Oral Oncology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan; (F.O.); (N.I.); (S.Y.)
| | - Nami Obayashi
- Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima 734-8551, Japan; (N.O.); (T.S.); (M.K.)
| | - Tomoaki Shintani
- Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima 734-8551, Japan; (N.O.); (T.S.); (M.K.)
| | - Mikihito Kajiya
- Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima 734-8551, Japan; (N.O.); (T.S.); (M.K.)
| | - Souichi Yanamoto
- Department of Oral Oncology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan; (F.O.); (N.I.); (S.Y.)
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Obayashi N, Sugita M, Shintani T, Nishi H, Ando T, Kajiya M, Kawaguchi H, Ohge H, Naito M. Taste-taste associations in chemotherapy-induced subjective taste alterations: findings from a questionnaire survey in an outpatient clinic. Support Care Cancer 2023; 31:552. [PMID: 37658917 DOI: 10.1007/s00520-023-08013-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 08/22/2023] [Indexed: 09/05/2023]
Abstract
PURPOSE Chemotherapy-induced taste alteration is a side effect that can result in malnutrition and reduced quality of life in cancer patients. However, the underlying causes of this phenomenon remain unclear, and evidence-based treatments have not been established. This study focused on patients' subjective symptoms of taste alterations aimed to explore how the sensitivity to basic tastes changes due to anticancer agents and how alterations in one taste perception are associated with changes in other tastes during chemotherapy. METHODS A cross-sectional questionnaire-based interview survey was conducted on 215 patients undergoing chemotherapy. The subjective sensitivity to each basic taste was assessed using a visual analog scale, and the incidence of taste alterations due to different chemotherapy regimens was calculated. Multivariate logistic regression analysis was performed to determine whether there were associations between changes in one taste sensitivity and changes in other taste sensitivities. RESULTS Approximately half (49.5%) of the patients experienced chemotherapy-induced taste alterations. An analysis of subjective changes in basic tastes revealed that the salt and umami taste systems were more sensitive to chemotherapy than other taste systems. Patients with altered sensitivity to sweet taste were significantly more likely to report altered sensitivity to salt, bitter, and sour tastes. Moreover, umami-salt and bitter-sour taste sensitivities were significantly related to each other. CONCLUSION This study suggests that changes in subjective sensitivities to one basic taste during chemotherapy may be accompanied by changes in other tastes in specific combinations. Considering taste associations in dietary guidance may help improve the nutritional status of cancer patients experiencing taste alterations due to chemotherapy.
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Affiliation(s)
- Nami Obayashi
- Department of General Dentistry, Hiroshima University Hospital, Kasumi 1-2-3, Minami-Ku, Hiroshima, 734-8551, Japan.
- Center of Oral Clinical Examination, Hiroshima University Hospital, Kasumi 1-2-3, Minami-Ku, Hiroshima, 734-8551, Japan.
- Department of Physiology and Oral Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, 734-8553, Japan.
| | - Makoto Sugita
- Department of Physiology and Oral Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, 734-8553, Japan
| | - Tomoaki Shintani
- Center of Oral Clinical Examination, Hiroshima University Hospital, Kasumi 1-2-3, Minami-Ku, Hiroshima, 734-8551, Japan
| | - Hiromi Nishi
- Department of General Dentistry, Hiroshima University Hospital, Kasumi 1-2-3, Minami-Ku, Hiroshima, 734-8551, Japan
| | - Toshinori Ando
- Center of Oral Clinical Examination, Hiroshima University Hospital, Kasumi 1-2-3, Minami-Ku, Hiroshima, 734-8551, Japan
| | - Mikihito Kajiya
- Center of Oral Clinical Examination, Hiroshima University Hospital, Kasumi 1-2-3, Minami-Ku, Hiroshima, 734-8551, Japan
| | - Hiroyuki Kawaguchi
- Department of General Dentistry, Hiroshima University Hospital, Kasumi 1-2-3, Minami-Ku, Hiroshima, 734-8551, Japan
| | - Hiroki Ohge
- Department of Infectious Diseases, Hiroshima University Hospital, Hiroshima, Japan
| | - Mariko Naito
- Department of Oral Epidemiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Obayashi N, Shintani T, Kamegashira A, Oka H, Ando T, Miyata R, Kawaguchi H, Kajiya M. A case report of allergic reaction with acute facial swelling: a rare complication of dental acrylic resin. J Int Med Res 2023; 51:3000605231187819. [PMID: 37480276 PMCID: PMC10363870 DOI: 10.1177/03000605231187819] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2023] Open
Abstract
Resin components, such as methyl methacrylate (MMA) can cause allergic contact dermatitis (ACD). Allergic reactions to resin are usually delayed. Only a few studies have reported dental resin allergy with acute symptoms. Here, a case of ACD with acute facial swelling after dental treatment using resin material is reported. A 55-year-old woman with a history of periungual inflammation when using gel nail polish had repeated episodes of facial swelling after dental treatment with resin material. The resin temporary crown was removed, and symptoms were alleviated with antihistamines and corticosteroids. With the suspicion of resin allergy, skin tests were performed. Patch testing revealed positive reactions to self-adhesive resin cement (primer and polymerized), self-curing acrylic resin (liquid and polymerized), 2-hydroxyethyl methacrylate (2-HEMA), and ethylene glycol dimethacrylate (EGDMA), whereas the prick test was negative for all allergens. Complement C4 and C1 inhibitor activity were reference values in the tests for hereditary angioedema. Based on these findings, the patient was diagnosed with ACD to 2-HEMA and EGDMA. Since diagnosis, no similar symptoms have been observed in subsequent dental treatment with non-resin materials. The use of dental resin materials may cause ACD with an acute reaction. This report alerts dentists who routinely use resin materials.
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Affiliation(s)
- Nami Obayashi
- Centre of Oral Clinical Examination, Hiroshima University, Hiroshima, Japan
- Department of General Dentistry, Hiroshima University Hospital, Hiroshima, Japan
| | - Tomoaki Shintani
- Centre of Oral Clinical Examination, Hiroshima University, Hiroshima, Japan
| | - Akiko Kamegashira
- Department of Dermatology, Hiroshima University Hospital, Hiroshima, Japan
| | - Hiroko Oka
- Centre for Cause of Death Investigation Research and Education, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Toshinori Ando
- Centre of Oral Clinical Examination, Hiroshima University, Hiroshima, Japan
| | - Rie Miyata
- Centre of Oral Clinical Examination, Hiroshima University, Hiroshima, Japan
| | - Hiroyuki Kawaguchi
- Department of General Dentistry, Hiroshima University Hospital, Hiroshima, Japan
| | - Mikihito Kajiya
- Centre of Oral Clinical Examination, Hiroshima University, Hiroshima, Japan
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Shintani T, Naito M, Obayashi N, Ando T, Kawaguchi H, Yanamoto S, Kajiya M, Sugita M. Resting Saliva Volume as a Risk Factor for Hypogeusia: A Retrospective Study. Physiol Behav 2023; 267:114224. [PMID: 37148986 DOI: 10.1016/j.physbeh.2023.114224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 04/21/2023] [Accepted: 05/03/2023] [Indexed: 05/08/2023]
Abstract
OBJECTIVES The causes of hypogeusia include zinc deficiency, systemic illness, and consumption of drugs. Notably, patients with oral cavity diseases such as oral candidiasis and salivary gland hypofunction may present with risk factors that remain unreported. Hence, this study aimed to investigate the relationship between age, sex, smoking status, serum zinc concentration, oral candidiasis, saliva volume, and taste function in patients with hypogeusia. SUBJECTS AND METHODS Overall, 335 participants who complained of taste abnormalities underwent a taste test. Based on the recognition threshold value, the participants were classified as normal individuals (recognition threshold of 1 and 2) and patients with hypogeusia (recognition threshold of ≥3). The clinical characteristics, including resting saliva volume (RSV) and stimulated saliva volume (SSV), were compared, and a multivariate logistic regression analysis focusing on RSV was performed. RESULTS Patients with hypogeusia had a lower RSV than normal individuals for all tastes, but not for SSV. Based on the results of regression analysis, RSV was identified as an independent predictor of hypogeusia for salty and bitter tastes. Moreover, the proportion of patients with decreased RSV increased as the number of taste qualities exceeding the reference recognition threshold increased. Furthermore, a decrease in RSV was associated with an increase in the recognition threshold for salty and bitter tastes. CONCLUSIONS Based on the results of the present study, moisturizing the oral cavity may be useful against hypogeusia.
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Affiliation(s)
- Tomoaki Shintani
- Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima, Japan.
| | - Mariko Naito
- Department of Oral Epidemiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Nami Obayashi
- Department of General Dentistry, Hiroshima University Hospital, Hiroshima, Japan
| | - Toshinori Ando
- Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima, Japan
| | - Hiroyuki Kawaguchi
- Department of General Dentistry, Hiroshima University Hospital, Hiroshima, Japan
| | - Souichi Yanamoto
- Department of Oral Oncology, Graduate School of Biomedical and Health Sciences, Hiroshima, Hiroshima University, Japan
| | - Mikihito Kajiya
- Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima, Japan
| | - Makoto Sugita
- Department of Physiology and Oral Physiology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, 734-8553, Japan
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Obayashi N, Sakayori N, Kawaguchi H, Sugita M. Effect of irinotecan administration on amiloride-sensitive sodium taste responses in mice. Eur J Oral Sci 2023; 131:e12922. [PMID: 36852977 DOI: 10.1111/eos.12922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 01/25/2023] [Indexed: 03/01/2023]
Abstract
Taste alteration is a frequently reported side effect in patients receiving the chemotherapeutic agent, irinotecan. However, the way in which irinotecan causes taste disturbance and the type of taste impairment that is affected remain elusive. Here, we used the two-bottle preference test to characterize behavioral taste responses and employed immunohistochemical analyses to clarify the types and mechanisms of taste alteration induced, in mice, by irinotecan administration. Irinotecan administration resulted in a reduced intake of sodium taste solution but had no effect on sweet taste responses, as determined in the two-bottle preference test. In the presence of amiloride, which inhibits the function of the epithelial sodium channel (ENaC) in the periphery, the intake of sodium taste solution was comparable between the irinotecan-treated and control groups. Immunohistochemical analyses revealed that α-ENaC immunoreactivity detected in taste bud cells decreased slowly after irinotecan administration, and that administration of irinotecan had little effect on the number of cells expressing the cellular proliferation marker, Ki67, within or around taste buds. Our results imply that irinotecan administration may be responsible for altered behavioral sodium taste responses originating from ENaC function in the periphery, while being accompanied by the reduction of α-ENaC expression at the apical membrane of taste receptor cells without disturbing taste cell renewal.
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Affiliation(s)
- Nami Obayashi
- Department of Physiology and Oral Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
- Department of General Dentistry, Hiroshima University Hospital, Hiroshima, Japan
| | - Nobuyuki Sakayori
- Department of Physiology and Oral Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hiroyuki Kawaguchi
- Department of General Dentistry, Hiroshima University Hospital, Hiroshima, Japan
| | - Makoto Sugita
- Department of Physiology and Oral Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Maekawa K, Saito D, Obayashi N, Uchida S, Haraoka S. Role of endothelium-derived nitric oxide and adenosine in functional myocardial hyperemia. Am J Physiol 1994; 267:H166-73. [PMID: 8048581 DOI: 10.1152/ajpheart.1994.267.1.h166] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
To investigate the role of endothelium-derived nitric oxide (EDNO) and adenosine in functional myocardial hyperemia, we examined the effect of NG-nitro-L-arginine (L-NNA) and 8-p-sulfophenyltheophylline (8-SPT) on coronary vasodilation in response to increased myocardial oxygen consumption in pentobarbital sodium-anesthetized dogs. L-NNA significantly attenuated the increase in coronary conductance from 28 +/- 6 to 16 +/- 2% with atrial pacing, from 69 +/- 5 to 36 +/- 6% with isoproterenol, and from 25 +/- 6 to 9 +/- 4% with constriction of the aorta. 8-SPT given alone attenuated the increase in coronary conductance to the same extent as L-NNA. The combined administration of L-NNA and 8-SPT did not further change coronary conductance. These findings suggest that EDNO and adenosine play an important role in functional hyperemia. EDNO-induced functional hyperemia appears to be dependent on adenosine receptor activation.
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Affiliation(s)
- K Maekawa
- Department of Cardiovascular Medicine, Okayama University Medical School, Japan
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Maekawa K, Saito D, Kobayashi H, Mizuo K, Obayashi N, Uchida S, Haraoka S. Effects of nipradilol on venous hemodynamics: evaluation with a Doppler blood flow method. Acta Med Okayama 1994; 48:87-91. [PMID: 8042538 DOI: 10.18926/amo/31107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Nipradilol is a newly synthesized beta-blocker which has a propranolol-like structure and contains a nitrate moiety. To examine the effect of nipradilol on venous blood flow, a single oral dose of nipradilol (6 mg) and propranolol (20 mg) was administered in the same 15 normal volunteers on separate days. Peak flow velocities, flow velocity integrals, and the diameter of the right brachiocephalic vein were measured before and 2 h after drug administration using Doppler echocardiography. These two beta-blockers significantly decreased systolic blood pressure to the same extent as they did heart rate. Nipradilol dilated the venous diameter by 8% and decreased peak flow velocity by 8% during systole and 9% during diastole. The flow velocity integral in one cardiac cycle also decreased significantly by 14%. Propranolol, however, failed to modify these parameters. These results suggest that nipradilol decreased venous return through its nitroglycerin-like direct vasodilating action.
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Affiliation(s)
- K Maekawa
- Department of Cardiovascular Medicine, Okayama University Medical School, Japan
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Saito D, Mima T, Obayashi N, Uchida S, Maekawa K, Sato T, Mizuo K, Kobayashi H, Haraoka S. Effects of inosine on adenosine-induced coronary vasodilation in the open chest dog. Arzneimittelforschung 1993; 43:950-3. [PMID: 8240456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The effects of inosine (CAS 58-63-9) on adenosine-induced coronary vasodilation were studied in open-chest dogs. Inosine and hypoxanthine were infused into the coronary artery at a rate to obtain respective calculated coronary plasma concentrations of 10(-5) mol/l, and the dose-coronary flow response of adenosine was recorded with and without inosine or hypoxanthine infusion. When the maximum coronary dilation was obtained, 10 ml of 2 x 10(-3) mol/l 8-phenyltheophylline (8-PT) solution was injected into the femoral vein. Additionally, adenosine deaminase activity was measured in vitro in the presence of various concentrations of either inosine or hypoxanthine. It was found that inosine, but not hypoxanthine, intensified the coronary vasodilatory effect of adenosine, which was abolished by 8-PT injection: EC50 of adenosine was reduced from 10(-5.43) mol/l to 10(-5.90) mol/l by inosine. Inosine and hypoxanthine did not affect adenosine deaminase activity at concentrations of 10(-4) mol/l or less. These findings indicate that inosine intensifies the coronary vasoactivity of adenosine, independent of inhibition of adenosine deaminase activity.
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Affiliation(s)
- D Saito
- Department of Cardiovascular Medicine, Okayama University Medical School, Japan
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Saito D, Matsubara K, Yamanari H, Uchida S, Obayashi N, Mizuo K, Sato T, Kobayashi H, Maekawa K, Fukushima K. Morning increase in hemodynamic response to exercise in patients with angina pectoris. Heart Vessels 1993; 8:149-54. [PMID: 8407724 DOI: 10.1007/bf01744799] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The present study was conducted to determine whether or not there is diurnal variation in the hemodynamic responses to stimuli that increase myocardial oxygen demand, and the effects of such variation on electrocardiograms (ECG). Fifteen patients with angina pectoris, 17 patients with old myocardial infarction, and 8 healthy controls were examined in this study. Graded exercise stress testing was conducted in the supine position, once in the morning and once in the afternoon, using a bicycle ergometer. A standard 12-lead ECG was recorded before, immediately after, and 3, 5, and 10 min after the end of the exercise. The exercise ECG and blood pressure changes were compared among the groups and, within each group, the results after morning and afternoon exercise were compared. Hemodynamic responses, including heart rate, blood pressure, and the pressure-rate product, showed greater increases in the morning than in the afternoon in angina patients and controls, in association with greater depression of the electrocardiographic ST-segment. In contrast, patients with old myocardial infarction exhibited no difference in hemodynamic responses or the ST-pattern from morning to afternoon. The results suggest that diurnal variation of hemodynamic responses to increased oxygen demand may explain, at least partly, why myocardial ischemia of effort angina is more severe in the morning than in the afternoon.
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Affiliation(s)
- D Saito
- Department of Cardiovascular Medicine, Okayama University Medical School, Japan
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Saito D, Uchida S, Obayashi N, Maekawa K, Mizuo K, Kobayashi H, Tani H, Haraoka S. Relationship between pressure-rate product and myocardial oxygen consumption of normal and hypertrophic right ventricles in open-chest dogs. Jpn Circ J 1993; 57:533-42. [PMID: 8341000 DOI: 10.1253/jcj.57.533] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
There are few reports on the relationship between right ventricular performance and its myocardial oxygen consumption (RVMVO2). The present study was conducted to investigate the relationship between RVMVO2 and the mechanical performance of normal and hypertrophic right ventricles in open-chest dogs. Right ventricular hypertrophy (RVH) was induced by producing chronic right ventricular pressure overload by banding the pulmonary arteries of 8 puppies for 6 months. The experiment was performed under basal conditions and after increasing the RVMVO2 in the eight dogs with RVH as well as in 20 normal dogs. The RVMVO2 showed significant positive relationships with right coronary (RCA) flow, right ventricular systolic pressure, and right ventricular pressure-rate product (PRP) in both the normal right ventricle and RVH hearts. However, the slope between the PRP and RVMVO2 was significantly steeper in the normal right ventricle (RV) than in the hypertrophic RV. When the PRP was normalized for the thickness of the right ventricular free wall, the slope of the two regression lines merged into a single line of fit. These results suggest that the pressure-rate product can be used to predict myocardial oxygen demand not only in the normal RV but also in well-compensated, hypertrophic RV. Isoproterenol induced smaller increases in cardiac output in the dogs with RVH than in those with normal RV. It also appears that the cardiac output of the hypertrophic RV is less sensitive to beta-adrenoceptor stimulation than that of the normal RV.
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Affiliation(s)
- D Saito
- Department of Cardiovascular Medicine, Okayama University Medical School, Japan
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Uchida S, Saito D, Obayashi N, Kobayashi H, Mizuo K, Sato T, Maekawa K, Yamanari H, Matsubara K, Haraoka S. [A case of an idiopathic enlargement of the right atrium, lacking in prominent right atrium contour and mimicking left pericardial defect on the chest X ray]. Kokyu To Junkan 1993; 41:493-496. [PMID: 8484060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A 47-year-old man was admitted for evaluation of heart murmur in 1982. On admission, two-dimensional echocardiogram showed a giant right atrium with mild tricuspid regurgitation, but a chest X ray showed no prominent right atrium contour. Echocardiographic finding at various postures and chest X ray with artificial pneumothorax indicated little likelihood of left pericardial defect. An angiocardiogram and computed tomography showed the dilated right atrium with clockwise rotation. There was no indication of right atrial overload. Therefore, we made the diagnosis of an idiopathic enlargement of the right atrium. For about 10 years after discharge, we have followed up this patient. He has received no treatment and has been asymptomatic. On the other hand, echocardiography shows that the right atrium has gradually enlarged. Electrocardiogram has clearly revealed only a tall and slender peaked P wave in chest leads for the last 5 years. This may indicate not only an increasing load on the right atrium but also that the enlarged atrium is getting closer to the walls of the chest. We report this case of an idiopathic enlargement of the right atrium lacking in prominent right atrium contour, and mimicking left pericardial defect on chest X ray.
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Affiliation(s)
- S Uchida
- Department of Cardiovascular Medicine, Okayama University School of Medicine
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12
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Saito D, Matsubara K, Yamanari H, Obayashi N, Uchida S, Maekawa K, Sato T, Mizuo K, Kobayashi H, Haraoka S. Effects of oral theophylline on sick sinus syndrome. J Am Coll Cardiol 1993; 21:1199-204. [PMID: 8459077 DOI: 10.1016/0735-1097(93)90246-w] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
OBJECTIVES We sought to determine the effect of theophylline on cardiac pauses in sick sinus syndrome. BACKGROUND Sick sinus syndrome, a relatively benign condition, is usually treated with pacemaker implantation without any proved effectiveness. Thus, an appropriate pharmacologic therapy would be useful. METHODS Theophylline (200 to 400 mg/day for 1 month) was initially administered orally to 17 patients with sick sinus syndrome, which is manifested by sinus pauses of > 2.5 s. Eleven of the 17 patients subsequently received theophylline for an additional 8 to 37 months. Twenty-four-hour Holter recordings were obtained before treatment, at the end of 1 month of treatment and then at 6-month intervals. RESULTS Theophylline decreased the frequency of sinus pauses from 256 +/- 230 to 23 +/- 62 pauses per 24 h and decreased the duration of the longest pauses from 4.7 +/- 1.8 to 2.2 +/- 0.97 s after 1 month of treatment. Subjective symptoms associated with cardiac pauses disappeared in 16 of 17 patients. Ventricular premature beats increased in frequency but did not last longer than two beats. Three patients experienced adverse effects. Nine of the 11 patients receiving long-term treatment had a good outcome, but 2 patients required a pacemaker because of the reappearance of long sinus pauses. CONCLUSIONS The results suggest that oral theophylline may be beneficial for the treatment of patients with sick sinus syndrome.
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Affiliation(s)
- D Saito
- Department of Cardiovascular Medicine, Okayama University Medical School, Japan
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Honda E, Domon M, Sasaki T, Obayashi N, Ida M. Fractal dimensions of ductal patterns in the parotid glands of normal subjects and patients with Sjögren syndrome. Invest Radiol 1992; 27:790-5. [PMID: 1399434 DOI: 10.1097/00004424-199210000-00008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
RATIONALE AND OBJECTIVES The sialographic ductal patterns of the parotid glands in patients with Sjögren syndrome were compared with those of normal patients by measuring the fractal dimensions. METHODS Fractal dimensions were estimated using the modified pixel dilation method. RESULTS The mean fractal dimension was 1.64 +/- 0.06 for the normal glands and 1.39 +/- 0.10 for the glands with Sjögren syndrome (P < .005). No correlation between the age or sex and fractal dimension was observed for both groups. In Sjögren syndrome, a significant difference in the fractal dimension was observed between the subgroup having punctuate fillings with a diameter less than 1 mm and the subgroup from 1 to 2 mm (P < .001). CONCLUSION The fractal dimension is useful as a numeric grading of the complexity of the ductal pattern and the progression of parotid disease.
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Affiliation(s)
- E Honda
- Department of Dental Radiology and Radiation Research, Faculty of Dentistry, Tokyo Medical and Dental University, Japan
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14
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Abstract
We report a case of a papillary fibroelastoma originating from the left ventricular endocardium in the outflow tract which was discovered by echocardiography in an asymptomatic patient. Two echocardiographic features were observed: (1) the tumor surface was smooth, and characteristic papillary formation was not detected; and (2) the outline of the mass was clearly defined as a dense echo, with the central, radiolucent, portion surrounded by a highly refractive linear echo at the level of the maximum diameter of the mass. The excised tumor was covered with a gelatinous substance that masked multiple papillae on the surface, but its echolucent center could not be explained by the pathology of the tumor which was solid centrally. Our case indicates that a papillary fibroelastoma may sometimes show echocardiographic findings similar to those of a myxoma, although other investigators have not noted the smooth surface and the echolucent center makes it indistinguishable from a myxoma. Thus, in some cases, it is difficult to distinguish papillary fibroelastoma from myxoma by echocardiography.
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Affiliation(s)
- S Uchida
- Department of Cardiovascular Medicine, Okayama University Medical School, Japan
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15
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Saito D, Mima T, Uchida S, Obayashi N, Marutani M, Mukohara N, Kusachi S, Tsuji T, Haraoka S. Interaction between adenosine and beta-adrenoceptors. Jpn Circ J 1991; 55:81-7. [PMID: 2010951 DOI: 10.1253/jcj.55.81] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Interaction between adenosine and isoproterenol (ISP) on myocardial inotropic action was studied in open-chest dog hearts. The local myocardial force and the left ventricular (LV) dP/dt were measured as indices of myocardial contractility. Isoproterenol [ISP, 9.47 microM (2 micrograms/ml)] was infused into the left circumflex coronary artery at rates of 0.05 ml/min (low dose ISP) or 0.2 ml/min (high dose ISP). Two mM adenosine or 0.5 mM N6-phenylisopropyl-adenosine (PIA) were infused into the coronary artery at rates of 0.2 (4 x 10(-7) mol/min), 0.5 (1 x 10(-6) mol/min) and 10 ml/min (2 x 10(-5) mol/min) in the presence of either a low or a high dose of ISP. Adenosine infusion at a rate of 0.2 ml/min did not modify myocardial contractility in the presence of the both doses of ISP. The larger doses of adenosine, 0.5 ml/min and 10 ml/min, decreased myocardial-developed tension and LVmax dP/dt dose-dependently. However, the dose of adenosine which affected myocardial contractility was inphysiologically high in comparison with the concentration in the ischemic myocardium. PIA, a potent agonist of adenosine A1-receptor, attenuated an increase in myocardial contractility in a dose-dependent manner which was caused by intracoronary ISP infusion. This indicates that A1-adenosine receptors exist, but a functional adenosine-catecholamine antagonism does not play a significant role in the canine left ventricle.
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Affiliation(s)
- D Saito
- Central Laboratories of Okayama University Medical School, Japan
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16
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Fujita N, Tosaka M, Io N, Amemiya K, Otsubo K, Obayashi N, Suzuki S, Kasanuki H, Nakamura K, Horie T. [A case of bronchogenic cyst showing cardiac abnormalities diagnosed by reconstruction CT prior to surgery]. Kokyu To Junkan 1985; 33:479-83. [PMID: 4012080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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17
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Nirei T, Tosaka M, Terada K, Obayashi N, Aamamiya K, Kasanuki H, Horie T, Osamura Y, Kondo M, Hirosawa K. [Therapy of prosthetic valve endocarditis]. Kokyu To Junkan 1984; 32:1173-7. [PMID: 6522863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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18
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Nirei T, Tosaka M, Terada K, Obayashi N, Amamiya K, Kasanuki H, Horie T, Osamura Y, Kondo M, Hirosawa K. [Clinicopathological analysis of prosthetic valve endocarditis]. Kokyu To Junkan 1984; 32:601-7. [PMID: 6473940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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19
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Nojiri T, Endo M, Koyanagi H, Obayashi N, Sekiguchi M. [Successful aortic valve replacement in rupture of an aneurysm of the sinus of Valsalva into the left ventricular cavity and aortic valve insufficiency associated with a complete form of Behcet's disease]. Rinsho Kyobu Geka 1983; 3:224-32. [PMID: 6867558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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20
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Ikeda Y, Obayashi N, Saito H, Matsuura Y, Sano T. [Biological activities of deshistidine-glucagon]. Nihon Naibunpi Gakkai Zasshi 1971; 47:605-7. [PMID: 5168622 DOI: 10.1507/endocrine1927.47.9_605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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