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Nakamura Y, Nakamura Y, Ishitsuka Y, Maruyama H, Fujisawa Y, Kawachi Y, Otsuka F. Facial nerve morbidity following facial nerve preservation surgery for the treatment of skin cancer of the head and neck. J Eur Acad Dermatol Venereol 2011; 26:1323-5. [DOI: 10.1111/j.1468-3083.2011.04322.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Nagata E, Nakagawa Y, Yamaguchi R, Fujisawa Y, Sano S, Satake E, Matsushita R, Nakanishi T, Liu Y, Ohzeki T. Altered gene expressions of ghrelin, PYY, and CCK in the gastrointestinal tract of the hyperphagic intrauterine growth restriction rat offspring. Horm Metab Res 2011; 43:178-82. [PMID: 21264794 DOI: 10.1055/s-0030-1270528] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Intrauterine growth restriction (IUGR) is associated with a substantially greater incidence of metabolic syndrome in adulthood. Animal studies have shown that IUGR offspring are hyperphagic during the early postnatal period and therefore exhibit obesity. The molecular mechanisms underlying food intake regulation in the gastrointestinal tract have not been clarified in IUGR. In the present study, we utilized a rat model of IUGR by restricting the food intake of the mother (50% of the normal intake, ad libitum; FR group) from day 7 of gestation until delivery. Pups from undernourished mothers were fostered by control mothers. We examined the food intake and assessed the gene expressions of ghrelin, peptide YY (PYY), and cholecystokinin (CCK) in the alimentary tract of male newborns (postnatal day1) and adult offspring (age, 7 months). Compared to the offspring whose mothers received the standard diet ad libitum (CON offspring), FR offspring were hyperphagic from the weaning time until the end of the experiment, and resulted in a heavier final weight. Both newborn and adult FR offspring had higher ghrelin gene expression in the stomach and higher ghrelin plasma levels than did the controls. Although the gastrointestinal gene expressions and plasma levels of the anorexic peptides, PYY and CCK, were elevated in the FR newborns, they decreased in the FR adults. Our findings suggest that the altered gene expressions of orexigenic and anorexigenic gut peptides in the gastrointestinal tract in the maternal undernutrition-induced IUGR offspring provide a potential mechanism to explain hyperphagia and obesity seen in these offspring.
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Yamaguchi R, Nakagawa Y, Liu YJ, Fujisawa Y, Sai S, Nagata E, Sano S, Satake E, Matsushita R, Nakanishi T, Chapman KE, Seckl JR, Ohzeki T. Effects of maternal high-fat diet on serum lipid concentration and expression of peroxisomal proliferator-activated receptors in the early life of rat offspring. Horm Metab Res 2010; 42:821-5. [PMID: 20711951 DOI: 10.1055/s-0030-1261954] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Peroxisomal proliferator-activated receptors (PPARs) play an important role in the regulation of lipid metabolism. The aim of this study was to investigate the effects of a maternal high-fat (HF) diet on serum lipid concentration and PPAR gene expression in liver and adipose tissue in the early life of the rat offspring. Female Sprague-Dawley rats were fed either an HF or control (CON) diet 6 weeks before mating and throughout gestation and lactation. Blood and tissue samplings of male offspring were carried out at birth or weaning. Birth weights were similar and serum triglyceride (TG) and nonesterified fatty acid (NEFA) levels showed no significant difference between HF and CON newborns, despite greatly increased hepatic PPARα mRNA expression in the HF newborns (p<0.05). Both HF newborns and weanlings revealed significantly decreased hepatic PPARγ expression compared with controls (p<0.0001). Hepatic PPARα expression in the HF weanlings was reduced markedly compared with CON weanlings (p<0.0001) and showed a negative correlation with serum TG levels (r=-0.743, p<0.05). However, epididymal expression of PPARγ in the HF weanlings was upregulated significantly compared with controls (p<0.05) and demonstrated a positive correlation with epididymal fat mass (r=0.733, p<0.05). These were accompanied by obesity as well as a rise in serum TG by 79% (p<0.05) and NEFA concentration by 36% (p<0.05) in these HF weanlings. Our findings suggest that maternal HF diet leads to alterations in PPAR gene expression in the weanling offspring, which is associated with the disturbed lipid homeostasis.
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Bréban S, Padilla F, Fujisawa Y, Mano I, Matsukawa M, Benhamou CL, Otani T, Laugier P, Chappard C. Trabecular and cortical bone separately assessed at radius with a new ultrasound device, in a young adult population with various physical activities. Bone 2010; 46:1620-5. [PMID: 20230926 DOI: 10.1016/j.bone.2010.03.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2009] [Revised: 01/27/2010] [Accepted: 03/04/2010] [Indexed: 11/15/2022]
Abstract
The aim was to evaluate a new ultrasound device in a young adult population and to assess its reproducibility via comparison to DXA measurements and geometrical measurements from high-resolution radiographs. Ninety-three subjects aged between 20 and 51 years were recruited and divided into four groups according to their gender and physical activity status: 22 male athletes, 19 male controls, 21 female athletes, and 31 female controls. Ultrasonic measurements were assessed by the prototype LD-100 (Oyo Electric Co., Kyoto, Japan) on the dominant distal radius. Attenuation in the radius (dB), cortical bone thickness (mm), radius thickness (mm), mass density of cancellous bone (mg/cm(3)), and elasticity (GPa) of cancellous bone were obtained. BMD was measured by DXA at the dominant distal radius. Radius images were obtained with a direct high-resolution digital X-ray device (BMA, D(3)A Medical Systems), and radius and cortical thicknesses were estimated using a specific software (ImageJ, Bethesda, USA), in an area site-matched with LD-100. There was a significant positive correlation between site-matched BMD measurement and LD-100 parameters (p<0.004), X-ray radius thickness, and LD-100 parameters except elasticity (p<0.05, r>0.32), X-ray cortical thickness and LD-100 attenuation and cortical thickness (p<0.01). A significantly higher attenuation, cortical and radius thicknesses were found in athletes compared to controls (p<0.05). The radius thickness measured on radiographs was significantly higher in athletes versus controls in both sexes, and cortical thickness was significantly higher in male athletes versus controls. These data suggest a positive influence of physical activity on bone cortical measurements. This study also confirmed the particular interest of bone assessment by ultrasound.
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Fujisawa Y, Kurimoto Y, Morishita K, Fukada J, Saito T, Ohori S, Abe T. Aortocaval fistula after endovascular stent-grafting of abdominal aortic aneurysm. THE JOURNAL OF CARDIOVASCULAR SURGERY 2009; 50:387-389. [PMID: 18948877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The authors present a case report of a 79-year-old man with insufficient cardiac contractile function who underwent endovascular stent-grafting for an abdominal aortic aneurysm. Thirty months later, the aneurysm ruptured into the inferior vena cava and subsequently formed an aortocaval fistula caused by migration of the stent-graft. Urgent secondary endovascular stent-grafting successfully excluded the blood flow into the vena cava. Endovascular stent-grafting is deemed suitable for treating this serious disorder, especially in severely debilitated or compromised patients who might not withstand a standard surgical intervention. Furthermore, in patients with previous stent-grafting, since the primary stent-graft makes repair by open surgery more difficult, a secondary endovascular intervention is recommended if feasible.
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Kawachi Y, Taguchi S, Fujisawa Y, Furuta J, Nakamura Y, Ishii Y, Takahashi T, Otsuka F. Epidermal pseudocarcinomatous hyperplasia with underlying epidermal growth factor-producing cutaneous CD30-positive lymphoproliferative disorder. J Eur Acad Dermatol Venereol 2009; 23:181-3. [DOI: 10.1111/j.1468-3083.2008.02758.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Yamaguchi T, Seki M, Fujisawa Y, Tobai H, Furuya S, Kitagawa H. Clinical significance of preoperative CA19-9 measurement for endometriomas – a study from the point of relation to various characteristics of ovarian endometriomas. Fertil Steril 2008. [DOI: 10.1016/j.fertnstert.2008.07.1148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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58
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Fujisawa Y, Furuya S, Seki M, Yamaguchi T, Tobai H, Kitagawa H. Assessment of chromosomal abnormalities in spontaneous abortions and potential efficiency of preimplantation genetic screening. Fertil Steril 2008. [DOI: 10.1016/j.fertnstert.2008.07.1015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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59
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Fujisawa Y, Takahashi T, Enomoto H, Nakamura Y, Kawachi Y, Otsuka F. A case of proximal-type epithelioid sarcoma which showed positive reactivity to fibroblast growth factor receptor 2-IIIb isotype. J Eur Acad Dermatol Venereol 2008; 22:1372-3. [PMID: 18482307 DOI: 10.1111/j.1468-3083.2008.02625.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Li RS, Nakagawa Y, Liu YJ, Fujisawa Y, Sai S, Nakanishi T, Chapman KE, Seckl JR, Ohzeki T. Growth hormone inhibits the 11 beta-Hydroxysteroid dehydrogenase type 1 gene promoter activity via insulin-like growth factor I in HepG2 cells. Horm Metab Res 2008; 40:286-8. [PMID: 18548388 DOI: 10.1055/s-2008-1058076] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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61
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Kawachi Y, Nakamura Y, Yoh K, Suzuki T, Fujisawa Y, Furuta J, Takahashi T, Otsuka F. Rheumatoid papules successfully treated with oral tacrolimus. J Eur Acad Dermatol Venereol 2008; 22:241-2. [PMID: 18211423 DOI: 10.1111/j.1468-3083.2007.02295.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sato H, Takahashi T, Fujisawa Y, Nakamura Y, Enomoto H, Otsuka F. Interleukin-8 and CXCR2 expression in spindle cell haemangioendothelioma. J Eur Acad Dermatol Venereol 2007; 22:638-40. [PMID: 18005019 DOI: 10.1111/j.1468-3083.2007.02435.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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63
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Furuya S, Seki M, Fujisawa Y, Yamaguchi T, Tobai H, Kitagawa H. Diagnostic and therapeutic significance of selective salpingography in women with tubal blockage suspected by hysterosalpingography. Fertil Steril 2007. [DOI: 10.1016/j.fertnstert.2007.07.694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Fujisawa Y, Furuya S, Seki M, Yamaguchi T, Tobai H, Kitagawa H. Cytogenetic study and ultrasonographic findings in spontaneous abortions — comparison between pregnancies occurring after art and spontaneous ovulatory cycles. Fertil Steril 2007. [DOI: 10.1016/j.fertnstert.2007.07.771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kawachi Y, Itoh M, Fujisawa Y, Furuta J, Nakamura Y, Banno T, Takahashi T, Otsuka F. Epidermal cell necrosis with direct epidermal infiltration of Epstein-Barr virus (EBV)-encoded small nuclear RNA-positive T lymphocytes in a patient with EBV-associated haemophagocytic syndrome. Br J Dermatol 2007; 157:1053-6. [PMID: 17725675 DOI: 10.1111/j.1365-2133.2007.08142.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Fujiwara T, Ikeda M, Esumi K, Fujita TD, Kono M, Tokushige H, Hatoyama T, Maeda T, Asai T, Ogawa T, Katsumata T, Sasaki S, Suzuki E, Suzuki M, Hino F, Fujita TK, Zaima H, Shimada M, Sugawara T, Tsuzuki Y, Hashimoto Y, Hishigaki H, Horimoto S, Miyajima N, Yamamoto T, Imagawa K, Sesoko S, Fujisawa Y. Exploratory aspirin resistance trial in healthy Japanese volunteers (J-ART) using platelet aggregation as a measure of thrombogenicity. THE PHARMACOGENOMICS JOURNAL 2007; 7:395-403. [PMID: 17245331 DOI: 10.1038/sj.tpj.6500435] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Aspirin prevents the production of thromboxane A2 (TXA2) by irreversibly inhibiting platelet cyclooxygenase, exhibiting antiplatelet actions. This agent has been reported to prevent relapse in patients with ischemic heart disease or cerebral infarction via this action mechanism. However, there are individual differences in this action, and aspirin is not effective in some patients, which is referred to as 'aspirin resistance'. In this study, we analyzed laboratory aspirin resistance by platelet aggregation in 110 healthy adult Japanese males using 24 single-nucleotide polymorphisms (SNPs) of nine genes involved in platelet aggregation/hemorrhage. Among SNPs involved in platelet aggregation, aspirin was less effective for 924T homozygote of a TXA2 receptor, 924T>C, and 1018C homozygote of a platelet membrane glycoprotein GPIbalpha, 1018C>T, suggesting that 924T and 1018C alleles are involved in aspirin resistance.
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Takahashi J, Yokota O, Fujisawa Y, Sasaki K, Ishizu H, Aoki T, Okawa M. An evaluation of polyvinylidene film dressing for treatment of pressure ulcers in older people. J Wound Care 2006; 15:449-50, 452-4. [PMID: 17124819 DOI: 10.12968/jowc.2006.15.10.26971] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To compare the effectiveness of polyvinylidene (PVL) food wrap as a dressing material versus conventional ointments and gauze dressings for pressure ulcers in patients aged 60 years or over. METHODS A prospective open controlled trial was conducted. The severity of pressure ulcers in both groups was evaluated using the DESIGN system. Scores were compared at baseline, four, eight and 12 weeks. RESULTS Twenty-five patients were treated with the PVL film (test) dressings and 24 with the conventional treatment (control). The test group showed greater improvement in DESIGN scores than the control group throughout the observation period, and the difference reached statistical significance at 12 weeks (p < 0.05). The incidences of local wound infection in the two groups were not statistically different (p > 0.999). CONCLUSION The PVL film dressing was more effective than conventional treatment in the management of severe pressure ulcers.
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Furuya S, Seki M, Fujisawa Y, Yamaguchi T, Tobai H, Kitagawa H. P-214. Fertil Steril 2006. [DOI: 10.1016/j.fertnstert.2006.07.566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yokota O, Sasaki K, Fujisawa Y, Takahashi J, Terada S, Ishihara T, Nakashima H, Kugo A, Ata T, Ishizu H, Kuroda S. Frequency of early and late-onset dementias in a Japanese memory disorders clinic. Eur J Neurol 2006; 12:782-90. [PMID: 16190916 DOI: 10.1111/j.1468-1331.2005.01072.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The aim of this study was to compare the diagnostic profiles of patients with early (age<65 years) and late (age>or=65 years) onset of dementia in a memory disorders clinic in Japan. A total of 512 consecutive memory clinic patients were evaluated using clinical information and results of examinations. Diagnosis of dementia was made according to DSM-III-R, and that of subtypes according to standard diagnostic criteria. A total of 464 patients met the criteria for dementia. Amongst late-onset patients (n=430), Alzheimer's disease (AD) (48.1%) was the most frequent cause of dementia, followed by AD with cerebrovascular disease (CVD) (31.4%), vascular dementia (VaD) (9.1%), dementia with Lewy bodies (DLB) (3.7%), frontotemporal lobar degeneration (FTLD) (1.6%), and others (5.8%). On the contrary, amongst early onset patients (n=34), the most common dementia diagnosis was AD (38.2%), followed by VaD (23.5%), FTLD (14.7%), AD with CVD (5.9%), DLB (2.9%), and others (17.6%). FTLD and VaD were significantly more common in the early onset group. All patients, but one, with DLB and Parkinson's disease dementia were late-onset. The relative frequencies of AD, VaD, and DLB in our series are consistent with epidemiologic findings in several Western countries; however, the frequency of FTLD is not consistent with the previous findings presenting high frequency in late-onset patients in some Western countries.
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Fujisawa Y, Umebayashi Y, Otsuka F. Metastatic extramammary Paget's disease successfully controlled with tumour dormancy therapy using docetaxel. Br J Dermatol 2005; 154:375-6. [PMID: 16433815 DOI: 10.1111/j.1365-2133.2005.07046.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Elgeti T, Bauknecht HC, Fujisawa Y, Mews J, Hamm B, Rogalla P. Reduktion des Bildrauschen und verbesserte Bildqualität durch ein neues CT-Datenfilter? ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Habata T, Uematsu K, Hattori K, Takakura Y, Fujisawa Y. Clinical features of the posterior horn tear in the medial meniscus. Arch Orthop Trauma Surg 2004; 124:642-5. [PMID: 15133696 DOI: 10.1007/s00402-004-0659-4] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2003] [Indexed: 11/25/2022]
Abstract
INTRODUCTION A lower threshold of suspicion is necessary for the appropriate diagnosis of a posterior horn tear in the medial meniscus. In these cases, radial tears or meniscus detachment from its insertion follow minor trauma and precipitate severe knee pain in middle-aged and elderly patients. The purpose of this paper is to demonstrate the key points for diagnosis through examination of the clinical features of this tear. MATERIALS AND METHODS Arthroscopic examination of 250 knees with medial meniscus tears (and no ligamentous injuries; over 40 years old) identified 26 knees (26 tears) with a posterior horn tear. Of these 26 tears, 16 were radial, and 10 were detached. RESULTS Eighty-five percent of patients could recall discrete events that preceded the pain. They described these events as a click or a feeling of shock. Afterwards, most patients complained of severe pain or giving way. Hydrarthrosis involving more than 5 ml was present in 81%. Most radiographs (92%) appeared nearly normal. CONCLUSION It is important to note that this type of tear of the posterior horn in the medial meniscus is not rare. Because this area is difficult to visualize arthroscopically, it may be overlooked unless the threshold of suspicion is lowered.
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Hachiro Y, Kawaharada N, Morishita K, Fukada J, Fujisawa Y, Kurimoto Y, Abe T. [Thoracoabdominal aortic aneurysm repair after detection of the Adamkiewicz artery by magnetic resonance angiography; a way to shorten operating time and improve outcome]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2004; 57:280-3. [PMID: 15071860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
Surgical results were compared between 18 patients (group A) who underwent preoperative anatomic characterization of the Adamkiewicz artery by magnetic resonance angiography (MRA) and 38 patients (group B) without such imaging. In group A, intercostal or lumbar arteries related to the aneurysm were reattached to the graft only when they represented the origin of the Adamkiewicz artery. In group B, reconstruction from the Th 7 intercostal and the L2 lumbar arteries was performed whenever possible. In-hospital mortality was 16.7% in group A and 15.8% in group B. Total aortic clamp time and operating time were only 84 and 437 min in group A, compared with 134 and 589 min in group B. Three patients showed postoperative paraplegia in group B. No spinal cord injury occurred in patients whose artery had been detected preoperatively. Preoperative anatomic delineation of the Adamkiewicz artery by MRA can reduce risk of ischemic injury to the spinal cord and decrease operating time required for repair of thoracoabdominal aortic aneurysms.
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Kojima R, Kami M, Kim SW, Murashige N, Kishi Y, Hori A, Imataki O, Hamaki T, Sakiyama M, Masuo S, Fujisawa Y, Makimoto A, Heike Y, Tanosaki R, Takaue Y. Induction of graft-versus-autoimmune (GVA) disease effect against refractory psoriasis by complete donor-type chimerism and graft-versus-host disease after allogeneic hematopoietic stem cell transplantation. Bone Marrow Transplant 2003; 32:439-42. [PMID: 12900783 DOI: 10.1038/sj.bmt.1704146] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A 67-year-old man with AML, who had a 21-year history of psoriasis without remission, received a reduced-intensity transplantation from an HLA-identical sibling. The preparative regimen consisted of busulfan and fludarabine. Graft-versus-host-disease (GVHD) prophylaxis was cyclosporine and methotrexate. Psoriasis was completely resolved on day 18. The subsequent clinical course was uneventful until day 42, when psoriasis recurred at the same sites as before RIST. Peripheral blood examined on day 63 showed mixed chimerism with 54% recipient type. Cyclosporine was rapidly tapered off over the next 2 weeks. On day 90, 100% donor-type chimerism was confirmed. Subsequently, psoriasis improved simultaneously with the occurrence of mucositis and rash as a manifestation of GVHD. Scattered erythematous patches of psoriasis disappeared again by day 105. We initiated 0.5 mg/kg prednisolone on day 119, and resumed cyclosporine on day 133. At 7 months after RIST, he still suffers from chronic GVHD, but his psoriasis remains in remission for the first time in 21 years. The anti-psoriasis effect of the conditioning is mild and transient, while the graft-versus-autoimmunity effect, related to the induction of complete donor-type chimerism and GVHD, is more profound and persisting. A graft-versus-autoimmunity effect lies in the delicate balance between alloimmunity and immunosuppressant used for GVHD prophylaxis/treatment.
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Fujisawa Y, Aiyama S. Histochemical and chronological analysis of mouse submandibular gland parenchyma subjected to abrupt reperfusion. Histol Histopathol 2003; 18:871-8. [PMID: 12792899 DOI: 10.14670/hh-18.871] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We examined the effects of abrupt reperfusion on the mouse submandibular gland parenchyma and determined the degree of recovery from tissue damage. A main trophic artery supplying the gland was ligated with silk thread, and the ligature was then released after a variable period. The gland was removed at various times after reperfusion and then examined immunohistochemically and ultrastructurally. With reperfusion after 15 or 30 min of ligation, the tissue damage to the glands was slight or inapparent. With reperfusion after 1 or 3 h of ligation, collapse of the acini and the ducts was observed in parts of the lobules, but restoration of the parenchymal structures occurred, with the appearance of PCNA-positive cells, although there were differences in the level of restoration. After 6 h of ligation, most of the normal parenchymal cells had disappeared by the 5th and 7th days after reperfusion, and apoptosis and necrosis were present. These findings suggest that if interruption of the blood supply to the submandibular gland parenchyma is limited to within a few hours, then tissue repair after reperfusion is possible, although this will differ according to the level of damage, because the acini and the ducts reappear, probably with proliferation of parenchymal cells.
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