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Takechi H, Endoh H, Hata Y, Wasamoto S, Yanagisawa S. Osimertinib-induced lymphocytopenia and pneumocystis jirovecii pneumonia. Pulmonology 2022; 28:403-405. [PMID: 35701337 DOI: 10.1016/j.pulmoe.2022.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 04/09/2022] [Accepted: 04/12/2022] [Indexed: 10/18/2022] Open
Affiliation(s)
- H Takechi
- Department of Respiratory Medicine, Saku Central Hospital Advanced Care Center, 3400-28 Nakagomi, Saku-city, Nagano 385-0051, Japan
| | - H Endoh
- Department of Thoracic Surgery, Saku Central Hospital Advanced Care Center, 3400-28 Nakagomi, Saku-city, Nagano 385-0051, Japan
| | - Y Hata
- Department of Respiratory Medicine, Saku Central Hospital Advanced Care Center, 3400-28 Nakagomi, Saku-city, Nagano 385-0051, Japan
| | - S Wasamoto
- Department of Respiratory Medicine, Saku Central Hospital Advanced Care Center, 3400-28 Nakagomi, Saku-city, Nagano 385-0051, Japan
| | - S Yanagisawa
- Department of Respiratory Medicine, Saku Central Hospital Advanced Care Center, 3400-28 Nakagomi, Saku-city, Nagano 385-0051, Japan.
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Harada K, Sugisawa H, Sugihara Y, Yanagisawa S, Shimmei M. JOB DEMANDS, COPING RESOURCES, AND JOB SATISFACTION AMONG OLDER EMPLOYED MEN IN JAPAN. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Harada K, Sugisawa H, Sugihara Y, Yanagisawa S, Shimmei M. PERCEIVED NEIGHBORHOOD ENVIRONMENT, SOCIAL SUPPORT, AND PHYSICAL ACTIVITY AMONG ELDERLY JAPANESE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- K. Harada
- Jissen Women’s University, Tokyo, Japan,
| | | | - Y. Sugihara
- Tokyo Metropolitan University, Tokyo, Japan,
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Sugisawa H, Harada K, Sugihara Y, Yanagisawa S, Shimmei M. PSYCHOSOCIAL MEDIATORS BETWEEN SOCIOECONOMIC STATUS AND PHYSICAL ACTIVITY IN OLDER JAPANESE ADULTS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- H. Sugisawa
- J.F. Oberlin University, Machida-shi, Tokyo, Japan,
| | - K. Harada
- Jissen Women’s University, Shibuya-ku, Japan,
| | - Y. Sugihara
- Tokyo Metropolitan University, Hachioji-shi, Japan,
| | | | - M. Shimmei
- Tokyo Metropolitan Institutute of Gerontology, Itabashi-ku, Japan
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Nitta H, Katagiri S, Nagasawa T, Izumi Y, Ishikawa I, Izumiyama H, Uchimura I, Kanazawa M, Chiba H, Matsuo A, Utsunomiya K, Tanabe H, Takei I, Asanami S, Kajio H, Ono T, Hayashi Y, Ueki K, Tsuji M, Kurachi Y, Yamanouchi T, Ichinokawa Y, Inokuchi T, Fukui A, Miyazaki S, Miyauchi T, Kawahara R, Ogiuchi H, Yoshioka N, Negishi J, Mori M, Mogi K, Saito Y, Tanzawa H, Nishikawa T, Takada N, Nanjo K, Morita N, Nakamura N, Kanamura N, Makino H, Nishimura F, Kobayashi K, Higuchi Y, Sakata T, Yanagisawa S, Tei C, Ando Y, Hanada N, Inoue S. The number of microvascular complications is associated with an increased risk for severity of periodontitis in type 2 diabetes patients: Results of a multicenter hospital-based cross-sectional study. J Diabetes Investig 2017; 8:677-686. [PMID: 28129466 PMCID: PMC5583958 DOI: 10.1111/jdi.12633] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 11/25/2016] [Accepted: 01/18/2017] [Indexed: 01/06/2023] Open
Abstract
Aims/Introduction To explore the relationships between periodontitis and microvascular complications as well as glycemic control in type 2 diabetes patients. Materials and Methods This multicenter, hospital‐based, cross‐sectional study included 620 patients with type 2 diabetes. We compared the prevalence and severity of periodontitis between patients with ≥1 microvascular complication and those without microvascular complications. We also compared the prevalence and severity of periodontitis among patients with different degrees of glycemic control. Results After adjusting for confounding factors, multiple logistic regression analysis showed that the severity of periodontitis was significantly associated with the number of microvascular complications (odds ratio 1.3, 95% confidence interval 1.1–1.6), glycated hemoglobin ≥8.0% (64 mmol/mol; odds ratio 1.6; 95% confidence interval 1.1–2.3), and older age (≥50 years; odds ratio 1.7; 95% confidence interval 1.1–2.6). However, the prevalence of periodontitis was not significantly associated with the number of microvascular complications, but was associated with male sex, high glycated hemoglobin (≥8.0% [64 mmol/mol]), older age (≥40 years), longer duration of diabetes (≥15 years) and fewer teeth (≤25). Furthermore, propensity score matching for age, sex, diabetes duration and glycated hemoglobin showed that the incidence of severe periodontitis was significantly higher among patients with microvascular complications than among those without microvascular complications (P < 0.05). Conclusions The number of microvascular complications is a risk factor for more severe periodontitis in patients with type 2 diabetes, whereas poor glycemic control is a risk factor for increased prevalence and severity of periodontitis.
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Affiliation(s)
- Hiroshi Nitta
- Medical and Dental Hospitals, Tokyo Medical and Dental University, Tokyo, Japan
| | - Sayaka Katagiri
- Medical and Dental Hospitals, Tokyo Medical and Dental University, Tokyo, Japan
| | - Toshiyuki Nagasawa
- Medical and Dental Hospitals, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuichi Izumi
- Kagoshima University Medical and Dental Hospital, Kagoshima, Japan
| | - Isao Ishikawa
- Medical and Dental Hospitals, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hajime Izumiyama
- Medical and Dental Hospitals, Tokyo Medical and Dental University, Tokyo, Japan
| | - Isao Uchimura
- Medical and Dental Hospitals, Tokyo Medical and Dental University, Tokyo, Japan
| | | | | | | | | | | | | | | | - Hiroshi Kajio
- Center Hospital of the National Center for Global Health and Medicine, Tokyo, Japan
| | - Toaki Ono
- Center Hospital of the National Center for Global Health and Medicine, Tokyo, Japan
| | | | - Kiichi Ueki
- Nihon University Itabashi Hospital, Tokyo, Japan
| | | | | | | | | | | | - Akiko Fukui
- Toho University Omori Hospital, Tokyo, Japan
| | | | | | | | | | | | - Jun Negishi
- Hokkaido University Hospital, Sapporo, Japan
| | | | - Kenji Mogi
- Gunma University Hospital, Maebashi, Japan
| | | | | | | | | | - Kishio Nanjo
- Wakayama Medical University Hospital, Wakayama, Japan
| | - Nobuo Morita
- Wakayama Medical University Hospital, Wakayama, Japan
| | - Naoto Nakamura
- University Hospital, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Narisato Kanamura
- University Hospital, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hirofumi Makino
- University Hospital, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | | | | | - Yoshinori Higuchi
- National Hospital Organization Kyusyu Medical Center, Fukuoka, Japan
| | | | | | - Chuwa Tei
- Kagoshima University Medical and Dental Hospital, Kagoshima, Japan
| | - Yuichi Ando
- Department of Oral Science, National Institute of Infectious Diseases, Japan
| | - Nobuhiro Hanada
- Department of Oral Science, National Institute of Infectious Diseases, Japan
| | - Shuji Inoue
- Department of Nutrition and Physiology, Faculty of Home Economics, Kyoritsu Women's University, Tokyo, Japan
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Kosugi C, Koda K, Denda T, Ishibashi K, Ishida H, Seike K, Sakata H, Yanagisawa S, Natsume T, Takayama W, Koike N, Matsubara H, Tanaka K, Yamazaki M, Shuto K, Suzuki M, Matsuo K, Mori M, Hirano A. Voice Trial-Results from a Multicenter Phase Ii Study of Assessment of Clinical Efficacy and Safety in Capecitabine Plus Intermittent Oxaliplatin Together with Bevacizumab As the First-Line Therapy for the Patients with Advanced Colorectal Cancer. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu333.27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Inoub H, Fluck E, Yanagisawa S. Bindungsverhältnisse in Berlinerblau-Analoga des Typs Fe[MB(CN)6] / Chemical Bonding in Prussian Blue Analogs of the Type Fe[MB(CN)e]. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/znb-1976-0206] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
All three compounds of the type Fe[MB(CN)6] (MB = Co, Rh and Ir) crystallize in the face-centered cubic system: space group Fm3m (Oh5), Z = 4. The lattice constants increase in the order Fe[Co(CN)6] (10.16 ± 0.01 A) < Fe[Rh(CN)6] (10.42 ± 0.01 A) < Fe[Ir(CN)6] (10.43 ± 0.01 A). The infrared spectra showed four absorption bands which are assigned to the normal vibrations: VCN-, VMB_C', υMB-CN and υFe-N• The observation of Fe-N stretching bands substantiates the existence of chemical bonding between iron and nitrogen atoms of the cyanide ligands. The intensive absorption bands around 26,5 kK are assignable to the charge transfer between Fe(III) and [MB(CN)6]3- groups, while the absorption bands in the UV region are assigned to the ligand field transitions of the [MB(CN)6]3~ moiety. The Mössbauer spectra gave a single absorption line with a relatively small isomer shift, which is explained in terms of the formation of σ-bonding between Fe-N.
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Affiliation(s)
- H. Inoub
- Institut für anorganische Chemie der Universität Stuttgart und Keio University, Dpt. of Applied Chemistry, Yokohama, Japan
| | - E. Fluck
- Institut für anorganische Chemie der Universität Stuttgart und Keio University, Dpt. of Applied Chemistry, Yokohama, Japan
| | - S. Yanagisawa
- Institut für anorganische Chemie der Universität Stuttgart und Keio University, Dpt. of Applied Chemistry, Yokohama, Japan
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Kawada S, Okamoto Y, Ogasahara K, Yanagisawa S, Ohtani M, Kobayashi K. Resistance exercise combined with essential amino acid supplementation improved walking ability in elderly people. ACTA ACUST UNITED AC 2013; 100:329-39. [DOI: 10.1556/aphysiol.100.2013.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Matsunaga K, Yanagisawa S, Hirano T, Ichikawa T, Koarai A, Akamatsu K, Sugiura H, Minakata Y, Matsunaga K, Kawayama T, Ichinose M. Associated demographics of persistent exhaled nitric oxide elevation in treated asthmatics. Clin Exp Allergy 2012; 42:775-81. [PMID: 22515393 DOI: 10.1111/j.1365-2222.2011.03945.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND The fraction of exhaled nitric oxide (FENO) is reduced by anti-inflammatory treatment in asthma. However, the FENO level is also regulated by individual demographics and there is considerable variation among clinically stable patients. OBJECTIVE We hypothesized that some demographics may be responsible for persistent FENO elevation despite inhaled corticosteroids (ICS) therapy in asthma. METHODS This was a prospective observational study. We initially screened 250 stable asthmatics and determined the FENO cut-off point for identifying poorly controlled asthma defined by one of the following criteria: Asthma control test <20, or forced expiratory volume in one-second % of predicted <80%, or peak expiratory flow variability <80% (Study 1). After 12-weeks, 229 patients who maintained high or low FENO were selected and the independent factors which might contribute to a high FENO were examined (Study 2). RESULTS A FENO level >39.5 p.p.b. yielded 67% sensitivity and 76% specificity for identifying the patients with poorly controlled asthma. The persistent high FENO group (≥ 40 p.p.b.) was more likely to be ex-smokers, to show evidence of atopy (positive specific IgE, higher serum IgE and blood eosinophils), and to have allergic comorbidities. Especially, past smoking history, blood eosinophils, and chronic rhinosinusitis were identified to be independent predictors of high FENO. Neither the dose of ICS nor other medication use showed any difference between the groups. CONCLUSIONS AND CLINICAL RELEVANCE These results suggested that past smoking history, blood eosinophilia, and chronic rhinosinusitis are involved in the persistent airway inflammation detected by FENO. Although their relative contributions on FENO values should be further quantified, clarification of the features of the subjects with high FENO might provide clues for adjustment of the treatment approach in asthma.
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Affiliation(s)
- K Matsunaga
- Third Department of Internal Medicine, School of Medicine, Wakayama Medical University, Wakayama, Japan
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Nonaka T, Inamori M, Kessoku T, Ogawa Y, Imajyo K, Yanagisawa S, Shiba T, Sakaguchi T, Nakajima A, Maeda S, Atsukawa K, Takahashi H. Acute obstructive cholangitis caused by an enterolith in a duodenal diverticulum. Endoscopy 2010; 42 Suppl 2:E204-5. [PMID: 20845273 DOI: 10.1055/s-0030-1255704] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- T Nonaka
- Department of Gastroenterology, Hiratsuka City Hospital, Hiratsuka, Japan
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Takeichi N, Yanagisawa S, Kaneyama T, Yagita H, Jin YH, Kim BS, Koh CS. Ameliorating effects of anti-Dll4 mAb on Theiler's murine encephalomyelitis virus-induced demyelinating disease. Int Immunol 2010; 22:729-38. [DOI: 10.1093/intimm/dxq059] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Fujinami Y, Fukui T, Nakano K, Ara T, Fujigaki Y, Imamura Y, Hattori T, Yanagisawa S, Kawakami T, Wang PL. The effects of cigarette exposure on rat salivary proteins and salivary glands. Oral Dis 2009; 15:466-71. [PMID: 19500271 DOI: 10.1111/j.1601-0825.2009.01572.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Passive smoking is the involuntary inhalation of cigarette smoke (CS) and has an adverse impact on oral health. We examined the effect of CS exposure on saliva and salivary glands (SGs). METHODS Cigarette smoke-exposed rats were intermittently housed in an animal chamber with whole-body exposure to CS until killed. Whole saliva was collected before CS exposure (0 day), and 15 and 30 days after the start of CS exposure. Saliva secretion was stimulated by administration of isoproterenol and pilocarpine after anesthesia. SGs were collected on 31 days. RESULTS The increase in body weight of the CS-exposed rats was less than that of the control rats. Salivary flow rates did not differ at 0, 15 or 30 days after the start of CS exposure. However, the amylase and peroxidase activities and total protein content in the saliva were significantly lower in 15-day CS-exposed rats than in 15-day control rats. Histological examination of the SGs of CS-exposed rats showed vacuolar degeneration, vasodilation and hyperemia. CONCLUSION These results suggest that CS exposure has adverse impacts on salivary composition and SGs, which could aggravate the oral environment.
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Affiliation(s)
- Y Fujinami
- Department of Pharmacology, Graduate School of Oral Medicine, Matsumoto Dental University, Shiojiri, Nagano 399-0781, Japan
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Nielsen J, Krag-Olsen B, Dirdal M, Holm V, Haahr J, Rasmussen NH, Videbech P, Yanagisawa S. Chromosome examination of children, in two Danish counties, born during the period 1967-1978. Epidemiological data. Hereditas 2009; 94:129-34. [PMID: 7216823 DOI: 10.1111/j.1601-5223.1981.tb01742.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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Furukawa M, Shimoda H, Kajiwara T, Kato S, Yanagisawa S. Topographic study on nerve-associated lymphatic vessels in the murine craniofacial region by immunohistochemistry and electron microscopy. ACTA ACUST UNITED AC 2009; 29:289-96. [PMID: 19129672 DOI: 10.2220/biomedres.29.289] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The distribution and fine structure of lymphatic vessels associated with nerves was studied by immunohistochemistry in the murine craniofacial region. The tissue sections and blocks were immunostained for LYVE-1, protein gene product 9.5, CD34 and aquaporin-1 to demonstrate the lymphatic vessels, nerves, blood vessels and water channel protein, respectively. Transmission electron microscopic examination was also performed to investigate the relationship between the lymphatics and nerves. In the nasal area, the lymphatics were found in dura mater on the cribriform plate and beneath the nasal mucosa, this supposedly supplying the cerebrospinal fluid drainage route along the olfactory nerves. The proximal portions of the cranial nerves were equipped with the lymphatics in the epineurium. In the distal portions of the nerves, the lymphatics were distributed in close proximity of the perineural sheath, and thus might contribute to maintenance of microenvironment suitable for the nerves by an absorptive activity of the lymphatic endothelial cells. The present findings suggest that the lymphatic system associated with the cranial nerves provides the pathway for transport of cerebrospinal fluid, tissue fluid, and free cells involved in immune response and tumor metastasis in the craniofacial region.
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Affiliation(s)
- Masahide Furukawa
- Department of Oncological Science, Faculty of Medicine, Oita University, Hasama-machi, Yufu-shi, Oita, Japan.
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Nielsen J, Krag-Olsen B, Dirdal M, Holm V, Haahr J, Rasmussen NH, Videbech P, Yanagisawa S. Chromosome abnormalities in children, in two Danish counties, born during the period 1967-1978: Clinical data. Hereditas 2008; 96:195-210. [PMID: 6213587 DOI: 10.1111/j.1601-5223.1982.tb00850.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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18
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Kanada R, Uchida T, Tsukamoto Y, Nguyen LT, Hijiya N, Matsuura K, Kodama M, Okimoto T, Murakami K, Fujioka T, Yanagisawa S, Moriyama M. Genotyping of the cagA gene of Helicobacter pylori on immunohistochemistry with East Asian CagA-specific antibody. Pathol Int 2008; 58:218-25. [PMID: 18324914 DOI: 10.1111/j.1440-1827.2008.02214.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The cytotoxin-associated antigen A (CagA) of Helicobacter pylori prevalent in East Asian countries, where the mortality rate due to gastric cancer is high, has been reported to be structurally different from that in Western countries, where the gastric cancer mortality rate is relatively low. Based on the structural features of the EPIYA motifs located at the carboxyl terminal of the protein, CagA was subdivided into two types: East Asian CagA and Western CagA. A recent study suggested that immunohistochemistry with anti-East Asian-specific antibody (alpha-EAS Ab), which was specifically immunoreactive with East Asian CagA but not with Western CagA, may be useful for diagnosis of the cagA genotype. To further evaluate the value of this diagnostic method in terms of sensitivity, specificity, and accuracy, 143 gastric biopsy specimens with alpha-EAS Ab were analyzed on immunohistochemistry and compared with the sequencing of the cagA gene. It was found that diagnosis of the cagA genotype of H. pylori on immunohistochemistry using the alpha-EAS Ab was highly sensitive (sensitivity 93.2%) and specific (specificity 72.7%), suggesting that immunohistochemical diagnosis of the cagA genotype is useful for diagnosis of the cagA genotype.
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Affiliation(s)
- Ryoko Kanada
- Department of Molecular Pathology, Faculty of Medicine, Oita University, Oita, Japan
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Akamatsu K, Yamagata T, Takahashi T, Miura K, Maeda S, Yamagata Y, Ichikawa T, Yanagisawa S, Ueshima K, Hirano T, Nakanishi M, Matsunaga K, Minakata Y, Ichinose M. Improvement of pulmonary function and dyspnea by tiotropium in COPD patients using a transdermal β2-agonist. Pulm Pharmacol Ther 2007; 20:701-7. [PMID: 17049894 DOI: 10.1016/j.pupt.2006.08.004] [Citation(s) in RCA: 5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2006] [Revised: 08/21/2006] [Accepted: 08/29/2006] [Indexed: 10/24/2022]
Abstract
BACKGROUND A combination of bronchodilators may be effective in the treatment of chronic obstructive pulmonary disease (COPD). We examined the effect of adding a long-acting anti-cholinergic agent (tiotropium) to a transdermal-type beta(2)-agonist (tulobuterol) on dyspnea as well as pulmonary function. METHODS In a multicentre, randomized, parallel design study, 60 COPD patients treated with the transdermal beta(2)-agonist tulobuterol were divided into a tiotropium added group (Tulo+Tio group, n=40) or transdermal beta(2)-agonist tulobuterol alone group (Tulo group, n=20), and then treated for 4 weeks after a 2 week run-in period. Pulmonary function and a dyspnea (Medical Research Council (MRC)) scale were assessed before and after the treatment. Daily peak expiratory flow (PEF) monitoring was also performed. RESULTS After 4 weeks, the Tulo+Tio group showed a significant increase in pulmonary function compared with the Tulo group; DeltaFVC (0.31+/-0.06 L vs. 0.06+/-0.05 L, p< 0.01), DeltaFEV(1) (0.15+/-0.03 L vs. -0.02+/-0.02 L, p<0.0001), and DeltaPEF (41.0+/-5.1 L/min vs. 0.5+/-3.5 L/min, p<0.0001). The MRC dyspnea scale was also significantly improved in Tulo+Tio, but not in Tulo group. CONCLUSION These results suggest that tiotropium caused a significant improvement in both pulmonary function and dyspnea in COPD patients already treated with the transdermal beta(2)-agonist tulobuterol.
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Affiliation(s)
- K Akamatsu
- Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama 641-8509, Japan
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Ichikawa T, Matsunaga K, Minakata Y, Yanagisawa S, Ueshima K, Akamatsu K, Hirano T, Nakanishi M, Sugiura H, Yamagata T, Ichinose M. Possible Impact of Salivary Influence on Cytokine Analysis in Exhaled Breath Condensate. Anal Chem�Insights 2007. [DOI: 10.4137/117739010700200007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Background Exhaled breath condensate (EBC) is thought to contain substances of the lower airway epithelial lining fluid (ELF) aerosolized by turbulent flow. However, contamination by saliva may affect the EBC when collected orally. Objective The purpose of this study was to compare the cytokine expression levels in EBC with those in saliva, and to clarify the influence of saliva on cytokine measurements of EBC. Methods EBC and saliva samples were obtained from 10 adult subjects with stable asthma. To estimate differences in the contents of substances between EBC and saliva, the total protein concentration of each sample was measured. Further, we also measured the total protein concentration of ELF obtained from another patient group with suspected lung cancer using a micro sampling probe during bronchoscopic examination and roughly estimated the dilution of EBC by comparing the total protein concentration of EBC and ELF from those two patient groups. The cytokine expression levels of EBC and saliva from asthmatic group were assessed by a cytokine protein array. Results The mean total protein concentrations in EBC, saliva and ELF were 4.6 μg/ml, 2,398 μg/ml and 14,111 μg/ml, respectively. The dilution of EBC could be estimated as 1:3000. Forty cytokines were analyzed by a cytokine protein array and each cytokine expression level of EBC was found to be different from that of saliva. Corrected by the total protein concentration, all cytokine expression levels of EBC were significantly higher than those of saliva. Conclusion These results suggest that the salivary influence on the cytokine assessment in EBC may be negligible.
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Affiliation(s)
- T. Ichikawa
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - K. Matsunaga
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - Y. Minakata
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - S. Yanagisawa
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - K. Ueshima
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - K. Akamatsu
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - T. Hirano
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - M. Nakanishi
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - H. Sugiura
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - T. Yamagata
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
| | - M. Ichinose
- The Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, Wakayama, Japan
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Ichikawa T, Matsunaga K, Minakata Y, Yanagisawa S, Ueshima K, Akamatsu K, Hirano T, Nakanishi M, Sugiura H, Yamagata T, Ichinose M. Possible impact of salivary influence on cytokine analysis in exhaled breath condensate. Anal Chem Insights 2007; 2:85-92. [PMID: 19662182 PMCID: PMC2716811] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Exhaled breath condensate (EBC) is thought to contain substances of the lower airway epithelial lining fluid (ELF) aerosolized by turbulent flow. However, contamination by saliva may affect the EBC when collected orally. OBJECTIVE The purpose of this study was to compare the cytokine expression levels in EBC with those in saliva, and to clarify the influence of saliva on cytokine measurements of EBC. METHODS EBC and saliva samples were obtained from 10 adult subjects with stable asthma. To estimate differences in the contents of substances between EBC and saliva, the total protein concentration of each sample was measured. Further, we also measured the total protein concentration of ELF obtained from another patient group with suspected lung cancer using a micro sampling probe during bronchoscopic examination and roughly estimated the dilution of EBC by comparing the total protein concentration of EBC and ELF from those two patient groups. The cytokine expression levels of EBC and saliva from asthmatic group were assessed by a cytokine protein array. RESULTS The mean total protein concentrations in EBC, saliva and ELF were 4.6 microg/ml, 2,398 microg/ml and 14,111 microg/ml, respectively. The dilution of EBC could be estimated as 1:3000. Forty cytokines were analyzed by a cytokine protein array and each cytokine expression level of EBC was found to be different from that of saliva. Corrected by the total protein concentration, all cytokine expression levels of EBC were significantly higher than those of saliva. CONCLUSION These results suggest that the salivary influence on the cytokine assessment in EBC may be negligible.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - M. Ichinose
- Correspondence: Masakazu Ichinose, M.D., Ph.D., Professor and Chairman, Third Department of Internal Medicine, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama 641-8509, Japan. Tel: +81-73-441-0619; Fax: +81-73-446-2877;
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Yamagata T, Hirano T, Sugiura H, Yanagisawa S, Ichikawa T, Ueshima K, Akamatsu K, Nakanishi M, Matsunaga K, Minakata Y, Ichinose M. Comparison of bronchodilatory properties of transdermal and inhaled long-acting beta 2-agonists. Pulm Pharmacol Ther 2007; 21:160-5. [PMID: 17632023 DOI: 10.1016/j.pupt.2007.05.004] [Citation(s) in RCA: 5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2006] [Revised: 05/16/2007] [Accepted: 05/18/2007] [Indexed: 11/19/2022]
Abstract
BACKGROUND Regular use of long-acting bronchodilators is recommended for symptomatic COPD patients. A transdermal type of beta 2-agonist, tulobuterol, was recently developed. This agent shows the pharmacokinetic property of a sustained serum concentration for 24h. However, little has been reported about the bronchodilatory properties of this agent. OBJECTIVES The aim of the present study was to compare the bronchodilatory action of transdermal beta 2-agonist tulobuterol with that of inhaled long-acting beta 2-agonist salmeterol. METHODS An open-label, randomized crossover study was performed. Eleven patients with stable COPD were enrolled in the study. Tulobuterol (2mg/day) or salmeterol (50 microg, twice daily) was administered in a randomized, crossover manner. Forced expiratory volume in 1s (FEV1), forced vital capacity (FVC) and inspiratory capacity (IC) were measured before administration, every 2h from 12 to 24h, and at 36 h after the initial administration. RESULTS Transdermal beta 2-agonist tulobuterol showed an improvement in FEV1, FVC and IC after dosing compared with those at baseline. Salmeterol also improved all parameters of FEV1, FVC and IC, and showed a greater improvement compared with the transdermal beta 2-agonist tulobuterol (p<0.05). The values of the area under the curve (AUC) of FEV1, FVC and IC during the administration of tulobuterol were 2.98+/-1.05, 1.81+/-0.98, 0.75+/-0.85 L h, respectively, and during the administration of salmeterol they were 6.39+/-1.12, 6.61+/-1.34, 4.28+/-0.91 L h, respectively. CONCLUSION The transdermal beta 2-agonist tulobuterol showed bronchodilatory action for at least 24h by once daily administration. However, its bronchodilatory potency was about three times less than that of the inhaled beta 2-agonist salmeterol.
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Affiliation(s)
- T Yamagata
- Third Department of Internal Medicine, Wakayama Medical University School of Medicine, 811-1 Kimiidera, Wakayama 641-8509, Japan
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Abstract
Primary chondrosarcoma was found in the quadrate lobe of the liver of a 6-year-old, intact, male Golden Retriever. At 6 months after partial hepatectomy, recurrence in the liver occurred. The dog died of its systemic metastases 10 months thereafter. Histologically, the hepatic mass revealed neoplastic chondrocytes with abundant chondroid matrix, and there were few myxoid areas where the cellularity and pleomorphism of the neoplastic cells were more prominent. The neoplastic cells were positive for periodic acid-Schiff and were immunohistochemically positive for vimentin and S-100 protein; the matrix was deeply stained for alcian blue and was metachromatic for toluidine blue stain. This tumor might be derived from pluripotent mesenchymal cells in the connective tissue of the liver. To the best of our knowledge, in all mammalians, including humans, this is the first report of extraskeletal chondrosarcoma primarily arising in the liver.
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Affiliation(s)
- S Chikata
- Department of Veterinary Pathology, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, 180-8602 Tokyo, Japan.
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Kawano K, Ono K, Yada N, Takahashi Y, Kashima K, Yokoyama S, Yanagisawa S. Malignant calcifying epithelial odontogenic tumor of the mandible: report of a case with pulmonary metastasis showing remarkable response to platinum derivatives. ACTA ACUST UNITED AC 2006; 104:76-81. [PMID: 17577547 DOI: 10.1016/j.tripleo.2006.04.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2005] [Revised: 03/07/2006] [Accepted: 04/18/2006] [Indexed: 11/16/2022]
Abstract
We describe a case of CEOT of the mandible, which underwent malignant transformation and developed metastatic tumors of the lung after repeated local recurrence. The primary tumor revealed typical histological features of benign CEOT showing sheets of polyhedral epithelial cells associated with abundant eosinophilic amyloid-like materials. On the other hand, the locally recurrent tumors had malignant features, such as increased nuclear pleomorphism with frequent mitotic figures and vascular invasion of tumor cells, as well as increased proliferative activity assessed by immunostaining for Ki-67. Chemotherapy was carried out against the pulmonary metastatic lesions, which showed a drastic response after 3 courses of intravenous administration of cisplatin (CDDP). To date, a total of 6 courses of CDDP and 6 courses of nedaplatin (CDGP) have been done, and the remaining pulmonary tumors have been dormant. This suggests that platinum derivatives could be a chemotherapeutic agent of choice against this rare tumor.
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Affiliation(s)
- Kenji Kawano
- Division of Oral and Maxillo-Facial Surgery, Department of Oncological Science, Faculty of Medicine, Oita University, Hasama-machi, Yufu-shi, Oita, Japan.
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Hirano T, Yamagata T, Gohda M, Yamagata Y, Ichikawa T, Yanagisawa S, Ueshima K, Akamatsu K, Nakanishi M, Matsunaga K, Minakata Y, Ichinose M. Inhibition of reactive nitrogen species production in COPD airways: comparison of inhaled corticosteroid and oral theophylline. Thorax 2006; 61:761-6. [PMID: 16936236 PMCID: PMC2117093 DOI: 10.1136/thx.200x.058156] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [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: 12/26/2005] [Accepted: 05/01/2006] [Indexed: 11/04/2022]
Abstract
BACKGROUND Reactive nitrogen species (RNS) are thought to be one of the important factors in the pathogenesis of chronic obstructive pulmonary disease (COPD). A study was undertaken to examine the effects of theophylline and fluticasone propionate (FP) on RNS production in subjects with COPD. METHODS Sixteen COPD subjects participated in the study. Theophylline (400 mg/day orally) or FP (400 mug/day inhalation) were administered for 4 weeks in a randomised crossover manner with a washout period of 4 weeks. Induced sputum was collected at the beginning and end of each treatment period. 3-nitrotyrosine (3-NT), which is a footprint of RNS, was quantified by high performance liquid chromatography with an electrochemical detection method as well as by immunohistochemical staining. RESULTS Theophylline significantly reduced the level of 3-NT in the sputum supernatant as well as the number of 3-NT positive cells (both p<0.01). FP also reduced 3-NT formation, but the effect was smaller than that of theophylline. Theophylline also significantly reduced the neutrophil cell counts in the sputum (p<0.01), while FP treatment had no effect on the number of inflammatory cells in the sputum, except eosinophils. CONCLUSIONS Theophylline reduces nitrative stress and neutrophil infiltration in COPD airways to a larger extent than inhaled corticosteroid.
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Affiliation(s)
- T Hirano
- Third Department of Internal Medicine, Wakayama Medical University School of Medicine, Wakayama, Japan
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Kawano K, Yanagisawa S. Predictive value of laminin-5 and membrane type 1-matrix metalloproteinase expression for cervical lymph node metastasis in T1 and T2 squamous cell carcinomas of the tongue and floor of the mouth. Head Neck 2006; 28:525-33. [PMID: 16619276 DOI: 10.1002/hed.20349] [Citation(s) in RCA: 21] [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] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Laminin-5 (Ln-5) cleaved by membrane type 1-matrix metalloproteinase (MT1-MMP) enhances the migration of tumor cells. The purpose of this study was to determine whether or not enhanced expression of both Ln-5 and MT1-MMP was associated with lymph node metastasis in patients with T1 and T2 squamous cell carcinoma (SCC) of the tongue and floor of the mouth. METHODS By use of biopsy specimens of primary tumors from 57 patients, intratumoral expression of Ln-5 and MT1-MMP was evaluated immunohistochemically and its association with node metastasis analyzed. RESULTS The tumors were categorized into three groups: Ln-5 focal type/MT1-MMP (-) (group I, n = 14), Ln-5 focal type/ MT1-MMP (+) and Ln-5 diffuse type/MT1-MMP (-) (group II, n = 16), and Ln-5 diffuse type/MT1-MMP (+) (group III, n = 27). The incidence of node metastasis (initial and latent metastases) was two of 14 (14.3%), five of 16 (31.3%), and 15 of 27 (55.6%) in groups I, II, and III, respectively. Multivariate analysis identified tumor thickness (odds ratio, 4.751; p = .0152) and Ln-5/ MT1-MMP expression (odds ratio, 3.795, p = .0304) as independent factors of node metastasis. Moreover, in 35 patients with N0 disease, Ln-5/MT1-MMP expression was the only parameter associated with latent node metastasis (odds ratio, 12.800, p = .0247). CONCLUSION These results suggest that immunohistochemical evaluation of Ln-5 and MT1-MMP expression is useful for identifying patients with T1 and T2 SCC of the tongue and floor of the mouth who should be treated with elective neck dissection.
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Affiliation(s)
- Kenji Kawano
- Department of Oncological Science, Division of Oral and Maxillo-Facial Surgery, Faculty of Medicine, Oita University, 1 Idaigaoka, Hasama-machi, Oita 879-5593, Japan.
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Hirano T, Yamagata T, Gohda M, Yamagata Y, Ichikawa T, Yanagisawa S, Ueshima K, Akamatsu K, Nakanishi M, Matsunaga K, Minakata Y, Ichinose M. Inhibition of reactive nitrogen species production in COPD airways: comparison of inhaled corticosteroid and oral theophylline. Thorax 2006. [DOI: 10.1136/thx.2005.058156] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kawano K, Yanagisawa S, Kusukawa J, Sunagawa H, Shiba R, Goto M, Shinohara M, Fukuda J, Oishi M, Ikemura K, Takahashi T, Sugihara K, Inokuchi T, Mimura T, Goto H. Intratumoural expression of thymidylate synthase is an independent predictor of prognosis in patients with squamous cell carcinoma of the tongue: results from a retrospective study. Int J Oral Maxillofac Surg 2006; 35:258-64. [PMID: 16280240 DOI: 10.1016/j.ijom.2005.07.022] [Citation(s) in RCA: 8] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2004] [Revised: 03/14/2005] [Accepted: 07/26/2005] [Indexed: 11/19/2022]
Abstract
The aim of this study was to assess the importance of immunohistochemical thymidylate synthase (TS) expression level as a prognostic marker in tongue cancer patients. In 140 patients with primary squamous cell carcinoma (SCC) of the tongue, intratumoural TS expression was evaluated by immunohistochemistry. The level of TS expression was determined by a semiquantitative scoring system, ranging from 1+ to 3+ according to the ratio of TS-positive cells. Of 140 patients, 64 (45.7%), 49 (35.0%) and 27 (19.3%) were assessed as 1+, 2+ and 3+, respectively. Univariate analyses demonstrated that both disease-free survival (DFS) and overall survival (OS) were significantly lower in patients with a TS 3+ tumour than in those with a TS 1+/2+ tumour (DFS: P = 0.0082, OS: P = 0.0100). In a multivariate analysis using the Cox regression model, cervical lymph-node status and TS expression level were selected as independent factors for DFS and OS. Maintenance adjuvant chemotherapy by oral 5-fluorouracil (5-FU) significantly improved DFS and OS in patients with a TS 1+/2+ tumour (DFS: P = 0.0027, OS: P = 0.0398). These data suggest that the level of immunohistochemical TS expression is an independent prognosticator in patients with tongue SCC, and may be useful in the selection of patients who would benefit from oral 5-FU adjuvant chemotherapy.
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Affiliation(s)
- K Kawano
- The Kyushu Research Group for TS in Oral Cancer, Japan.
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Yamaguchi K, Matsuo N, Sumiyoshi H, Fujimoto N, Iyama KI, Yanagisawa S, Yoshioka H. Pro-α3(V) collagen chain is expressed in bone and its basic N-terminal peptide adheres to osteosarcoma cells. Matrix Biol 2005; 24:283-94. [PMID: 15908193 DOI: 10.1016/j.matbio.2005.03.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2004] [Revised: 03/09/2005] [Accepted: 03/09/2005] [Indexed: 10/25/2022]
Abstract
The third alpha-chain of type V collagen, alpha3(V) chain, was initially identified in the placenta more than 20 years ago, but was poorly characterized with regard to its expression and function. We generated a specific monoclonal antibody against the N-terminal domain of the pro-alpha3(V) chain and examined gene expression using immunohistochemical methods combined with in situ hybridization. The pro-alpha3(V) chain was seen in funis and amnion, but not chorionic villi and deciduas of mouse placenta. In mouse embryo, the transcripts of the pro-alpha3(V) gene were seen in tissues that were related to bone formation as well as developing muscle and nascent ligament previously reported. However, immunohistochemistry showed that pro-alpha3(V) protein accumulated rather in the developing bone of mouse embryo. On the other hand, the N-terminal globular domain of the pro-alpha3(V) chain has a unique structure that contains a highly basic segment of 23 amino acids. The peptide derived from the basic segment showed a specific adhesive feature to osteosarcoma cells but not to chondrosarcoma cells. The four heparin binding sites in the basic segment equally contribute toward adhesion to the osteosarcoma cells. Our data suggested that N-terminal globular domain of the pro-alpha3(V) chain influence bone formation of osteoblasts through proteoglycan on the cell surface during development or regeneration.
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Affiliation(s)
- Kenji Yamaguchi
- Department of Anatomy, Biology and Medicine, Oita University, Faculty of Medicine, 1-1 Hasama-machi, Oita 879-5593, Japan
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Aino H, Yanagisawa S, Kamae I. Reply. J Public Health (Oxf) 2004. [DOI: 10.1093/pubmed/fdh185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Aino H, Yanagisawa S, Kamae I. Erratum. J Public Health (Oxf) 2004. [DOI: 10.1093/pubmed/fdh171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Kawano K, Goto H, Kanda T, Yanagisawa S. Predictive value of immunohistochemical thymidylate synthase expression for histological response to Tegafur/Uracil (UFT) in oral squamous cell carcinoma. Int J Oral Maxillofac Surg 2004; 32:633-7. [PMID: 14636615 DOI: 10.1054/ijom.2002.0411] [Citation(s) in RCA: 5] [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: 11/18/2022]
Abstract
Thymidylate synthase (TS), an enzyme involved in the DNA synthesis, is a critical target for fluoropyrimidines. We investigated the relationship between the level of tumoural TS expression and response to tegafur/uracil (UFT) in 26 patients with oral squamous cell carcinoma. The patients received peroral administration of UFT alone preoperatively. In biopsy specimens, TS expression level was assessed by the immunohistochemical staining and graded as 1+, 2+ or 3+ according to the frequency of strongly-stained tumour cells. Out of 26 tumours, 10 (38.5%), 10 (38.5%) and 6 (23.1%) cases were categorized as 1+, 2+ and 3+, respectively. The response to UFT was histologically evaluated by a grading system according to the extent of degenerative or necrotic cancer cells in surgical specimens. Results showed patients with the lower TS expression had the higher response and there was a statistically significant association between TS expression and response to UFT (P=0.031). This finding suggests that TS expression is a predictor of chemosensitivity to UFT in oral squamous cell carcinomas.
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Affiliation(s)
- K Kawano
- Department of Oncological Science (Oral and Maxillo-Facial Surgery Division), Faculty of Medicine, Oita Medical University, 1 Idaigaoka, Hasama-machi, Oita, 879-5593, Japan.
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Abstract
This study compared health-seeking behaviour between poor and better-off people after health sector reform in Cambodia. The survey was conducted in the Prek Dach Health Centre coverage area, which is located in South-east Cambodia. The study population consisted of 257 housewives of reproductive age, selected at random. Data were collected through household surveys with a structured questionnaire. Data collected included socio-demographic information on the housewives, as well as episodes of illness of family members within 30 days prior to the survey. Two indicators, the floor area of living space and a rating scale on asset ownership, were used to identify poor and very poor people. When a family member became ill, subjects most often used home remedies as a first step, followed by self-medication. Subsequently, people used self-medication or the private health sector. Very poor people used the health centre more often than better-off people as a first step. For the second step, use of the health centre was also high among the poor compared with better-off people, although the difference was not statistically significant. Keeping the treatment fees low and abolishing informal fees maintained the affordability of health-centre services for the poor. However, this benefit diminished quickly with distance from the health centre. The significant difference between poor and better-off people disappeared for villages situated more than 2 km from the health centre. Thus, the health centre in the studied area was shown to be effective in providing primary health care to the economically disadvantaged, but only within a limited geographic area.
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Affiliation(s)
- S Yanagisawa
- Department of International Community Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
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Noguchi T, Kato T, Takeno S, Wada S, Yanagisawa S, Suzuki M. Necessity of screening for multiple primary cancers in patients with esophageal cancer. Ann Thorac Cardiovasc Surg 2002; 8:336-42. [PMID: 12517292] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023] Open
Abstract
This study divided patients with esophageal cancer and multiple primary cancers into two groups, a head and neck cancer (HNC) group and a non-head and neck cancer (NHNC) group. These groups were then evaluated on the basis of clinical and pathological studies. Among 92 patients with esophageal cancer as one of multiple primary cancers, 38 (41.8%) were assigned to the HNC group. The following characteristics distinguished patients in the HNC group from those in the NHNC group: (1) younger age; (2) shorter interval between diagnosis of metachronous cancers; (3) many displayed superficial esophageal cancer. Among the cases in which esophageal cancer was discovered synchronously with head and neck cancer, head and neck cancers were discovered before esophageal cancer; and (4) many patients displayed esophageal dysplasia, and many had multiple esophageal cancers. In the present study, we demonstrated the necessity of screening for multiple primary cancers in patients with esophageal cancer.
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Affiliation(s)
- Tsuyoshi Noguchi
- Department of Oncological Science Surgery II, Oita Medical University, Oita, Japan
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Goto H, Kawano K, Kobayashi I, Sakai H, Yanagisawa S. Expression of cyclin D1 and GSK-3beta and their predictive value of prognosis in squamous cell carcinomas of the tongue. Oral Oncol 2002; 38:549-56. [PMID: 12167432 DOI: 10.1016/s1368-8375(01)00121-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.3] [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: 11/29/2022]
Abstract
The status of cyclin D1 and glycogen synthase kinase 3beta (GSK-3beta) was investigated in 41 patients with T1 and T2 squamous cell carcinomas (SCCs) of the tongue. Out of the 41 SCCs, 27 (65.9%) showed overexpression of cyclin D1 in comparison with normal lingual epithelia by an immunohistochemical method. Cyclin D1 gene amplification was detected in only two (9.1%) of 22 informative cases of the SCCs by differential PCR. Expression of GSK-3beta, which was found to regulate proteosomal degradation of cyclin D1 protein, was reduced in 16 cases (39.0%) of the SCCs relative to normal epithelia, and the intensity of GSK-3beta staining showed an inverse association with cyclin D1. These findings suggest that overexpression of cyclin D1 primarily results from stabilization due to reduction of GSK-3beta, but not cyclin D1 gene amplification, in lingual SCCs. Kaplan-Meier analysis demonstrated that the patients with high cyclin D1 and reduced GSK-3beta expression had a significantly lower 5-year survival than the patients with low cyclin D1 and non-reduced GSK-3beta expression (P=0.014). The cyclin D1 and GSK-3beta coupled assessment was more valuable for the prediction of prognosis than assessment based on cyclin D1.
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Affiliation(s)
- H Goto
- Department of Oral and Maxillo-Facial Surgery, Faculty of Medicine, Oita Medical University, 1 Idaigaoka, Hasama-machi, Oita, Japan
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Kaneko S, Yoshimura T, Ikemura K, Shirasuna K, Kusukawa J, Ohishi M, Shiba R, Sunakawa H, Tominaga K, Sugihara K, Shinohara M, Katsuki T, Yanagisawa S, Kurokawa H, Mimura T, Ikeda H, Yamabe S, Ozeki S. Primary neck management among patients with cancer of the oral cavity without clinical nodal metastases: A decision and sensitivity analysis. Head Neck 2002; 24:582-90. [PMID: 12112556 DOI: 10.1002/hed.10101] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [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: 11/10/2022] Open
Abstract
BACKGROUND A standardized neck management strategy for oral cancer patients without clinical nodal metastases remains to be established. Consequently, a decision and sensitivity analysis of two neck management protocols, involving either prophylactic neck dissection or careful observation, was conducted using the Oral Cancer Registry of Kyushu, Japan. METHODS We calculated probabilities of subclinical nodal metastases and 5-year survival using the registry data. A two-way sensitive analysis was conducted using the probabilities and parameters of the complete nodal metastasis resection rate (x) and a utility rating that describes the health state induced by dissection (y) compared with the neck condition in a careful-observation group. RESULTS We solved the threshold curve for y and x for the expected utility between the two groups. The results showed that prophylactic neck dissection must guarantee a complete resection of subclinical nodal metastases with no disadvantage to health state to be evaluated as equally satisfactory as careful observation. CONCLUSIONS Careful observation involving standardized systematic preoperative and postoperative screening of the neck seems preferable to prophylactic neck dissection for oral cancer patients without subclinical nodal metastases.
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Affiliation(s)
- Satoshi Kaneko
- Department of Clinical Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan.
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Abstract
Since the ultrasonically activated scalpel (UAS) incorporates multiple functions, we have used it for hepatectomies. The present study discusses the noteworthy points and problems of use, and shows initial results. Intraoperative ultrasonography is an important tool for comprehending the positional relationship between the plane of division and the main blood vessels. It allows initial adjustment of coagulation and cutting effects according to the rigidity of the liver parenchyma by means of variable ultrasound levels and exchangeable blade tips, and offers good visibility of the cut surface in deep sites as long as adequate tension on the tissue and an upper position for the blade are maintained. 30 patients underwent hepatectomies using the UAS. The amount of blood loss for lobectomy was significantly less than that for partial lobectomy in normal livers in addition to a significant difference between normal and damaged livers in each group according to the extent of resection. There were no serious complications seen in all cases during the operation. The incidence of positive bile leakage was high. It is recommended that bile leakage testing be carried out as thoroughly as possible. There were 3 postoperative bile fistulas and 1 postoperative hemorrhage. In conclusion, although a dramatic improvement in blood loss and shortened operating time could not be obtained in all procedures, the safety and usefulness were demonstrated in lobectomy. The UAS can be considered as a surgical device that can contribute to the efficiency of hepatectomy, depending on the indications selected.
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Affiliation(s)
- T Okamoto
- Department of Surgery, Jikei University School of Medicine, Tokyo, Japan.
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Fujioka S, Yoshida K, Yanagisawa S, Kawakami M, Aoki T, Yamazaki Y. Angiogenesis in pancreatic carcinoma: thymidine phosphorylase expression in stromal cells and intratumoral microvessel density as independent predictors of overall and relapse-free survival. Cancer 2001. [PMID: 11745251 DOI: 10.1002/1097-0142(20011001)92:7<1788::aid-cncr1695>3.0.co;2-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Recently, the usefulness of intratumoral microvessel density (IMD) and expression of several angiogenic factors as prognostic indicators have been demonstrated in several human solid tumors. METHODS One hundred four patients with pancreatic ductal adenocarcinoma were examined retrospectively. The investigated clinicopathologic and immunohistologic data included staining for vascular endothelial growth factor (VEGF), thymidine phosphorylase (TP), basic fibroblast growth factor (bFGF), CD34 (for calculating IMD), p53, and Ki-67. RESULTS Multivariate analysis for both overall and relapse-free survival revealed two independent variables, IMD and TP staining in stromal cells (TPs, P < 0.02). Whereas the frequency of hepatic metastasis was correlated significantly with cytoplasmic expression of TP or bFGF in tumor cells (TPc, bFGFc), IMD, and p53 status, local recurrence was significantly more common in patients with positive staining for TPs, bFGF in stromal cells (bFGFs), and for the pM category (P < 0.05). TPc, bFGFc, VEGF, and p53 expression correlated with IMD (P < 0.01), although TPs and bFGFs expression did not. VEGF and IMD status correlated with p53 expression (P < 0.001), although TP, bFGF, and Ki-67 status did not. CONCLUSIONS TPs expression and IMD were revealed to be valuable tools for predicting overall and relapse-free survival in patients with pancreatic adenocarcinoma. Whereas TPc and bFGFc are likely to participate in hepatic metastasis by means of their angiogenic properties, TPs and bFGFs may be related to local tumor progression. Angiogenesis in human pancreatic carcinoma may be dependent on VEGF, TP, and bFGF. p53 abnormality is likely to take part in VEGF-related angiogenesis.
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Affiliation(s)
- S Fujioka
- Department of Surgery 1, University Hospital, The Jikei University School of Medicine, 3-25-8, Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan.
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Yanagisawa S, Hayasaka S, Zhang XY, Hayasaka Y, Nagaki Y, Kitagawa K. Effect of topical betaxolol on acute rise of aqueous flare induced by prostaglandin E(2) in pigmented rabbits. Jpn J Ophthalmol 2001; 45:669-71. [PMID: 11754916 DOI: 10.1016/s0021-5155(01)00422-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 11/22/2022]
Abstract
PURPOSE To evaluate the effects of topical betaxolol on experimental ocular inflammation. METHODS Transcorneal diffusion of 25 microg/mL (7.09 x 10(-2) mmol/L) of prostaglandin E(2) (PGE(2)), placed in a glass cylinder, was employed to induce aqueous flare elevation in pigmented rabbits. Betaxolol was administered topically before PGE(2) application. Aqueous flare was measured with a laser flare cell meter. RESULTS Four-, two-, and one-time topical instillations of betaxolol inhibited the PGE(2)-induced aqueous flare elevation by 44% +/- 8%, 32 +/- 7%, and 8 +/- 6%(mean +/- SD), respectively. The inhibition of flare elevation was dependent on the number of betaxolol instillations. CONCLUSION Topical betaxolol has an inhibitory effect on PGE(2)-induced aqueous flare elevation in rabbit eyes.
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Affiliation(s)
- S Yanagisawa
- Department of Ophthalmology, Toyama Medical and Pharmaceutical University, Toyama-shi, Toyama-ken, Japan
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41
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Fujioka S, Yoshida K, Yanagisawa S, Kawakami M, Aoki T, Yamazaki Y. Angiogenesis in pancreatic carcinoma: thymidine phosphorylase expression in stromal cells and intratumoral microvessel density as independent predictors of overall and relapse-free survival. Cancer 2001; 92:1788-97. [PMID: 11745251 DOI: 10.1002/1097-0142(20011001)92:7<1788::aid-cncr1695>3.0.co;2-z] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.3] [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: 01/22/2023]
Abstract
BACKGROUND Recently, the usefulness of intratumoral microvessel density (IMD) and expression of several angiogenic factors as prognostic indicators have been demonstrated in several human solid tumors. METHODS One hundred four patients with pancreatic ductal adenocarcinoma were examined retrospectively. The investigated clinicopathologic and immunohistologic data included staining for vascular endothelial growth factor (VEGF), thymidine phosphorylase (TP), basic fibroblast growth factor (bFGF), CD34 (for calculating IMD), p53, and Ki-67. RESULTS Multivariate analysis for both overall and relapse-free survival revealed two independent variables, IMD and TP staining in stromal cells (TPs, P < 0.02). Whereas the frequency of hepatic metastasis was correlated significantly with cytoplasmic expression of TP or bFGF in tumor cells (TPc, bFGFc), IMD, and p53 status, local recurrence was significantly more common in patients with positive staining for TPs, bFGF in stromal cells (bFGFs), and for the pM category (P < 0.05). TPc, bFGFc, VEGF, and p53 expression correlated with IMD (P < 0.01), although TPs and bFGFs expression did not. VEGF and IMD status correlated with p53 expression (P < 0.001), although TP, bFGF, and Ki-67 status did not. CONCLUSIONS TPs expression and IMD were revealed to be valuable tools for predicting overall and relapse-free survival in patients with pancreatic adenocarcinoma. Whereas TPc and bFGFc are likely to participate in hepatic metastasis by means of their angiogenic properties, TPs and bFGFs may be related to local tumor progression. Angiogenesis in human pancreatic carcinoma may be dependent on VEGF, TP, and bFGF. p53 abnormality is likely to take part in VEGF-related angiogenesis.
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Affiliation(s)
- S Fujioka
- Department of Surgery 1, University Hospital, The Jikei University School of Medicine, 3-25-8, Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan.
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Yanagisawa S. The transcriptional activation domain of the plant-specific Dof1 factor functions in plant, animal, and yeast cells. Plant Cell Physiol 2001; 42:813-22. [PMID: 11522906 DOI: 10.1093/pcp/pce105] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Maize Dof1, one of the plant-specific Dof transcription factors, is involved in light-regulated gene expression. To elucidate the molecular mechanism underlying the activity of Dof1, in vivo functional analyses were carried out using transient expression assays with maize mesophyll protoplasts. The results suggest that the Dof domain alone, the region conserved among Dof factors, can mediate interaction with DNA in vivo and distinct Dof1 activities in greening and etiolated protoplasts. A region rich in basic amino acids was identified as a nuclear localization signal. Deletion analysis defined the transcriptional activation domain of 48 amino acids located in the C-terminus of Dof1. This activation domain was also found to be functional in both human cells and yeast, implying that Dof1 may stimulate transcription through a mechanism evolutionarily conserved among eukaryotes. A computer homology search with known transcription factors revealed that the activation domain of Dof1 displayed only a limited similarity to Activation domain II of animal transcription factor GATA-4. Mutational analysis revealed the critical role of a tryptophan residue within the activation domain of Dof1, as had been shown in Activation domain II of GATA-4.
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Affiliation(s)
- S Yanagisawa
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro, Tokyo, 153-8902 Japan
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Kawano K, Mizuki H, Mori H, Yanagisawa S. Mandibular arteriovenous malformation treated by transvenous coil embolization: a long-term follow-up with special reference to bone regeneration. J Oral Maxillofac Surg 2001; 59:326-30. [PMID: 11243618 DOI: 10.1053/joms.2001.21005] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- K Kawano
- Department of Maxillo-Facial Surgery, Faculty of Medicine, Oita Medical University, Japan.
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Natsume N, Kawai T, Kohama G, Teshima T, Kochi S, Ohashi Y, Enomoto S, Ishii M, Nakano Y, Matsuya T, Kogo M, Yoshimura Y, Ohishi M, Nakamura N, Katsuki T, Goto M, Shimizu M, Yanagisawa S, Mimura T, Sunakawa H. Incidence of cleft lip or palate in 303738 Japanese babies born between 1994 and 1995. Br J Oral Maxillofac Surg 2000; 38:605-607. [PMID: 11092775 DOI: 10.1054/bjom.2000.0539] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [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: 11/18/2022]
Abstract
To investigate the incidence of cleft lip or palate or both (CLP) in Japan, 303738 babies born in 1532 institutions between 1994 and 1995 were examined and 437 (0.14%) were found to have abnormalities. Of these babies, 32.1% had cleft lip, 43.3% had cleft lip and palate, and 24.8% had cleft palate (Table 2). These results show that the incidence of cleft lip and palate has declined compared with the period from 1981 to 1982.
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Takahara T, Kanazu SI, Yanagisawa S, Akanuma H. Heterogeneous Sp1 mRNAs in human HepG2 cells include a product of homotypic trans-splicing. J Biol Chem 2000; 275:38067-72. [PMID: 10973950 DOI: 10.1074/jbc.m002010200] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.1] [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: 11/06/2022] Open
Abstract
Sp1 is one of the well documented transcription factors, but the whole structure of human Sp1 has not been determined yet. In the present study, we isolated several cDNAs representing two forms of human Sp1 mRNA with different 5'-terminal structures in HepG2 cells. Isolation of a genomic clone established that one of the cDNAs represents the mRNA having consecutive alignment of exons, which allowed deducing the complete amino acid sequence for human Sp1. Another cDNA clone had a surprising structure that possessed an alignment of exons 3-2-3. Both reverse transcriptase-polymerase chain reaction and RNase protection assays confirmed accumulation of the two forms of Sp1 mRNA in HepG2 cells. Because Southern blot analysis suggested that exon 3 is of a single copy in the genome, the cDNA clone having the duplicated sequences for exon 3 appeared to reflect the trans-splicing between pre-mRNAs of human Sp1.
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Affiliation(s)
- T Takahara
- Department of Life Sciences (Chemistry), Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro, Tokyo 153-8902, Japan
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Abstract
The enantioselective construction of a fully functionalized core structure of (-)-CP-263,114 (1), containing most of the required functionality for total synthesis, was conducted through sequential radical fragmentation-reductive olefination.
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Affiliation(s)
- T Yoshimitsu
- Meiji Pharmaceutical University, Noshio, Kiyose, Tokyo 204-8588, Japan.
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Kanzaki H, Yanagisawa S, Nitoda T. Biosynthetic intermediates of the tetradehydro cyclic dipeptide albonoursin produced by Streptomyces albulus KO-23. J Antibiot (Tokyo) 2000; 53:1257-64. [PMID: 11213286 DOI: 10.7164/antibiotics.53.1257] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [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: 11/21/2022]
Abstract
The cell-free extract of an albonoursin-producing strain Streptomyces albulus KO-23 catalyzes the conversion of cyclo(L-Leu-L-Phe) (1) to albonoursin (2). At the early stage of this conversion, two compounds were newly formed prior to albonoursin synthesis in the reaction mixture. These compounds were isolated and identified as (Z)-3-benzylidene-6-isobutyl-2,5-piperazinedione (4) and (Z)-3-benzyl-6-isobutylidene-2,5-piperazinedione (3). The cell-free extract also catalyzed the conversion of compound 3 or 4 to albonoursin. From these results, albonoursin was found to be biosynthesized via these compounds from cyclo(L-Leu-L-Phe). These didehydro diketopiperazines exhibited no inhibitory activity toward the first cleavage of sea urchin embryo in contrast to the higher cytotoxicity for albonoursin, indicating that dehydrogenation at alpha,beta-positions of both amino acid residues in diketopiperazines is required for cytotoxicity.
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Affiliation(s)
- H Kanzaki
- Laboratory of Bioresources Chemistry, Faculty of Agriculture, Okayama University, Japan
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Lu CS, Kashima K, Daa T, Yokoyama S, Yanagisawa S, Nakayama I. Immunohistochemical study of the distribution of endogenous biotin and biotin-binding enzymes in ductal structures of salivary gland tumours. J Oral Pathol Med 2000; 29:445-51. [PMID: 11016687 DOI: 10.1034/j.1600-0714.2000.290905.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [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: 11/23/2022]
Abstract
To clarify the pathologic value of endogenous biotin in the salivary gland, we examined in a series of neoplasms of the salivary gland by immunohistochemical staining the distribution of endogenous biotin and of biotin-binding enzymes, namely, acetyl CoA carboxylase (AC), which is a cytosolic enzyme, and pyruvate carboxylase (PC), which is a mitochondrial enzyme. In pleomorphic adenoma, we found biotin and PC in ductal epithelial elements, while AC was found mainly in myoepithelial elements. Carcinoma ex pleomorphic adenoma, adenocarcinoma and mucoepidermoid carcinoma were frequently immunopositive for biotin, PC and AC, while adenoid cystic carcinoma was rarely immunopositive for biotin, PC or AC. These results indicate that endogenous biotin might be associated with the mitochondrial enzyme, which is present at high levels in ductal cells of the salivary gland. However, the neoplastic cells in adenoid cystic carcinoma seemed to have an unusual expression of biotin and related enzymes.
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Affiliation(s)
- C S Lu
- Department of Pathology, Oita Medical University, Japan
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50
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Zhang B, Miura M, Ji RC, Matsumoto Y, Yanagisawa S, Kato S. Structural organization and fine distribution of lymphatic vessels in periodontal tissues of the rat and monkey: a histochemical study. Okajimas Folia Anat Jpn 2000; 77:93-107. [PMID: 11111377 DOI: 10.2535/ofaj1936.77.4_93] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The structural organization and fine distribution of lymphatic vessels in the periodontal tissues (gingiva, periodontium and alveolar process) were examined by light and electron microscopy using an enzyme-histochemical method. Whole mount preparations of periodontal membranes peeled from the teeth and cryostat sections of normal or decalcified tissues treated with EDTA were double-stained using 5'-nucleotidase (5'-Nase)-alkaline phosphatase (ALPase) and examined by light microscopy. This staining procedure allowed the lymphatic vessels in the periodontal tissue to be differentiated from blood vessels. Well-developed 5'-Nase-positive lymphatics were observed in the gingiva and periodontium. The histochemical aspects of 5'-Nase activity in lymphatic vessels are discussed in detail, with special reference to the supply of Mg++ ions. A network of 5'-Nase-positive lymphatics was observed in whole mount preparations of the periodontal membrane for the first time. This network was also observed in the tissue sections. More 5'-Nase-positive lymphatics were seen in the root area of the periodontium than in the cervical area. 5'-Nase-positive lymphatics in residual tissue blocks remaining after cryostat sectioning and in whole mount preparations were highlighted with good contrast and resolution on backscattered electron images produced by scanning electron microscopy. Dense granular precipitations resulting from the 5'-Nase reaction were observed on the luminal surface of the lymphatic endothelial cells as well as on the basal side but were absent in the blood vessels.
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Affiliation(s)
- B Zhang
- Department of Oral and Maxillo-Facial Surgery, Oita, Japan
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