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Mack M, Brestoff J, Niu H, Whelan T, Oetjen L, Bodet N, Wang F, Xu A, Park E, Margolis D, Yokoyama W, Kim B. 1017 Natural killer cell dysregulation underlies atopic dermatitis. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1029] [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: 10/17/2022]
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Dura A, Yokoyama W, Rosell CM. Glycemic Response to Corn Starch Modified with Cyclodextrin Glycosyltransferase and its Relationship to Physical Properties. Plant Foods Hum Nutr 2016; 71:252-258. [PMID: 27277075 DOI: 10.1007/s11130-016-0553-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Corn starch was modified with cyclodextrin glycosyltransferase (CGTase) below the gelatinization temperature. The porous granules with or without CGTase hydrolysis products may be used as an alternative to modified corn starches in foods applications. The amount and type of hydrolysis products were determined, containing mainly β-cyclodextrin (CD), which will influence pasting behavior and glycemic response in mice. Irregular surface and small holes were observed by microscopic analysis and differences in pasting properties were observed in the presence of hydrolysis products. Postprandial blood glucose in mice fed gelatinized enzymatically modified starch peaked earlier than their ungelatinized counterparts. However, in ungelatinized enzymatically modified starches, the presence of β- CD may inhibit the orientation of amylases slowing hydrolysis, which may help to maintain lower blood glucose levels. Significant correlations were found between glycemic curves and viscosity pattern of starches.
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Affiliation(s)
- A Dura
- Institute of Agrochemistry and Food Technology (IATA-CSIC), Avenida Agustin Escardino, 7, 46980, Paterna, Valencia, Spain
- Healthy Processed Foods Research, Agricultural Research Service, U.S. Department of Agriculture, Albany, California, 94710, USA
| | - W Yokoyama
- Healthy Processed Foods Research, Agricultural Research Service, U.S. Department of Agriculture, Albany, California, 94710, USA
| | - C M Rosell
- Institute of Agrochemistry and Food Technology (IATA-CSIC), Avenida Agustin Escardino, 7, 46980, Paterna, Valencia, Spain.
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Sakai R, Kasai S, Hirano F, Kihara M, Yokoyama W, Tsutsumino M, Nagasaka K, Koike R, Yamanaka H, Miyasaka N, Harigai M. FRI0146 Incidence Rate and The Risk of Herpes Zoster in Patients with Rheumatoid Arthritis Using Japanese Health Insurance Database. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.2414] [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: 11/04/2022]
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Hirano F, Yokoyama W, Yamazaki H, Amano K, Kaneko Y, Kawakami A, Matsui T, Sakai R, Koike R, Miyasaka N, Harigai M. THU0085 SDAI Remission at week 24 is a Predictor of Good Functional and Structural Outcomes at week 72 in a T2T Implementing Cohort. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2103] [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: 11/03/2022]
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Sakai R, Hirano F, Kihara M, Yokoyama W, Yamazaki H, Koike R, Miyasaka N, Harigai M. FRI0088 Prevalence of Comorbidities in Patients with Rheumatoid Arthritis Using Japanese Health Insurance Database. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1296] [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: 11/03/2022]
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Miyabe Y, Miyabe C, Iwai Y, Takayasu A, Fukuda S, Yokoyama W, Nagai J, Jona M, Tokuhara Y, Ohkawa R, Albers HM, Ovaa H, Aoki J, Chun J, Yatomi Y, Ueda H, Miyasaka M, Miyasaka N, Nanki T. THU0106 Lysophosphatidic Acid Receptor LPA1 is Essential for Development of Arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.634] [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: 11/04/2022]
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Rosell CM, Yokoyama W, Shoemaker C. Rheology of different hydrocolloids–rice starch blends. Effect of successive heating–cooling cycles. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2010.11.047] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Castro CE, Jamin M, Yokoyama W, Wade R. Ligation and reduction of iron(III) porphyrins by amines. A model for cytochrome P-450 monoamine oxidase. J Am Chem Soc 2002. [DOI: 10.1021/ja00274a055] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Maeda A, Wakiguchi H, Yokoyama W, Hisakawa H, Tomoda T, Kurashige T. Persistently high Epstein-Barr virus (EBV) loads in peripheral blood lymphocytes from patients with chronic active EBV infection. J Infect Dis 1999; 179:1012-5. [PMID: 10068600 DOI: 10.1086/314691] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.6] [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: 11/03/2022] Open
Abstract
Chronic active Epstein-Barr virus infection (CAEBV) is a severe illness with unusual EBV activation that persists for years, and its pathogenesis is largely unknown. After the creation of an accurate and reproducible polymerase chain reaction system to quantify EBV DNA, virus loads in peripheral blood lymphocytes (PBL) were determined in 54 children: 15 with CAEBV, 16 with infectious mononucleosis (IM), and 23 healthy children. Children with CAEBV and those with IM had high virus loads. Lower loads were detected in 47% of seropositive healthy donors. There were two distinct differences between children with CAEBV and those with IM: The former had greater viral replication (10(3)-10(7) copies/2.5x10(5) PBL) than those with IM, and viral replication declined in children with IM whereas active replication persisted for years in subjects with CAEBV. Persisting high virus loads are a possible diagnostic criterion for CAEBV. EBV loads may enable classification and prognosis of EBV infections.
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Affiliation(s)
- A Maeda
- Microbiology and Tumorbiology Center (MTC), Karolinska Institute, S-171 77, Stockholm, Sweden.
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Bourdon I, Yokoyama W, Davis P, Hudson C, Backus R, Richter D, Knuckles B, Schneeman BO. Postprandial lipid, glucose, insulin, and cholecystokinin responses in men fed barley pasta enriched with beta-glucan. Am J Clin Nutr 1999; 69:55-63. [PMID: 9925123 DOI: 10.1093/ajcn/69.1.55] [Citation(s) in RCA: 225] [Impact Index Per Article: 9.0] [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: 11/13/2022] Open
Abstract
BACKGROUND Fiber regulates the rate and site of lipid and carbohydrate digestion and absorption and thus can modify the alimentary responses to a meal. When fiber sources containing viscous polysaccharides are included in a meal, a slower rate of carbohydrate and lipid absorption will modify the alimentary hormone and lipid responses. OBJECTIVE We investigated in 11 healthy men the response of insulin, glucose, cholecystokinin, and lipid to 2 test meals containing beta-glucan. DESIGN One of the meals was high in fiber (15.7 g) and the other meal was low in fiber (5.0 g). The low-fiber meal contained pasta made with wheat flour. The high-fiber meals contained pasta prepared by replacing 40% of the wheat with 2 types of barley flour: barley naturally high in beta-glucan and the other a flour enriched in beta-glucan during processing. RESULTS Plasma glucose and insulin concentrations increased significantly after all meals but the insulin response was more blunted after the barley-containing meals. The test meals were low in fat (25% of energy) but elicited an increase in plasma triacylglycerol and cholecystokinin. Cholecystokinin remained elevated for a longer time after the barley-containing meals. After the low-fiber meal, plasma cholesterol concentrations did not change significantly; however, 4 h after the barley-containing meals, the cholesterol concentration dropped below the fasting concentration and was significantly lower than that after the low-fiber meal. CONCLUSIONS Carbohydrate was more slowly absorbed from the 2 high-fiber meals. Consumption of the barley-containing meals appeared to stimulate reverse cholesterol transport, which may contribute to the cholesterol-lowering ability of barley.
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Affiliation(s)
- I Bourdon
- Department of Nutrition, University of California, Davis 95616-8571, USA
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Yokoyama W, Fujieda M, Okada T, Maeda H, Ushida M, Machida Y, Naruse K, Maeda A, Wakiguchi H, Kurashige T. Periodic discharge of adrenocorticotropin and vasopressin associated with focal glomerulosclerosis. Acta Paediatr Jpn 1998; 40:600-3. [PMID: 9893298 DOI: 10.1111/j.1442-200x.1998.tb01998.x] [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] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report the first case of the syndrome of periodic adrenocorticotropin (ACTH) and vasopressin (ADH) discharge associated with focal glomerulosclerosis. Approximately 30 cases of this syndrome have so far been reported in Japan, but no cases associated with renal dysfunction have yet been reported. The patient, a 10-year-old Japanese boy, was referred to our hospital because of recurrent attacks of vomiting. He was diagnosed as having this syndrome from clinical and laboratory findings. While various drugs were tried to manage his vomiting attacks, only valproic acid appeared to be effective in reducing the frequency of the attacks. Chronic nephritis was manifested when the patient was 12 years old, which required treatment with continuous ambulatory peritoneal dialysis. Valproic acid was proved to be effective in reducing the number of attacks over 4 months.
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Affiliation(s)
- W Yokoyama
- Department of Pediatrics, Kochi Medical School, Japan
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Yokoyama W, Renner-Nantz JJ, Shoemaker CF. Starch Molecular Mass and Size by Size-Exclusion Chromatography in DMSO-LiBr Coupled with Multiple Angle Laser Light Scattering. Cereal Chem 1998. [DOI: 10.1094/cchem.1998.75.4.530] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- W. Yokoyama
- USDA, ARS, Western Regional Research Center, 800 Buchanan St., Albany, CA 94710. Names are necessary to report factually on available data; however, the USDA neither guarantees nor warrants the standard of the product, and the use of the name by the USDA implies no approval of the product to the exclusion of others that may also be suitable
- Corresponding author. Phone: 510/559-5695. Fax: 510/559-5777. E-mail:
| | - J. J. Renner-Nantz
- USDA, ARS, Western Regional Research Center, 800 Buchanan St., Albany, CA 94710. Names are necessary to report factually on available data; however, the USDA neither guarantees nor warrants the standard of the product, and the use of the name by the USDA implies no approval of the product to the exclusion of others that may also be suitable
| | - C. F. Shoemaker
- Department of Food Science & Technology, University of California, Davis, CA
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Abstract
We describe a 15 year old boy with renal hypouricemia who developed acute renal failure after a school athletics meeting, accompanied by appendicitis. During acute renal failure, the highest level of uric acid was 5.0 mg/dL, creatinine 7.9 mg/dL and urea nitrogen 58.6 mg/dL. After recovery, the serum uric acid fell to 0.9 mg/dL and the fractional excretion of uric acid (FEuA) exceeded the normal range. The probenecid and pyrazinamide tests showed that the patient had a total defect of uric acid reabsorption. This case suggested that strenuous exercise could be responsible for acute renal failure in patients with renal hypouricemia.
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Affiliation(s)
- M Fujieda
- Department of Pediatrics, Kochi Medical School, Nanokoku-city, Japan
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Sykes M, Harty MW, Karlhofer FM, Pearson DA, Szot G, Yokoyama W. Hematopoietic cells and radioresistant host elements influence natural killer cell differentiation. J Exp Med 1993; 178:223-9. [PMID: 8315379 PMCID: PMC2191072 DOI: 10.1084/jem.178.1.223] [Citation(s) in RCA: 82] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Radioresistant host elements mediate positive selection of developing thymocytes, whereas bone marrow-derived cells induce clonal deletion of T cells with receptors that are strongly autoreactive. In contrast to T cell development, little is known about the elements governing the natural killer (NK) cell repertoire, which, similar to the T cell repertoire, differs between individuals bearing different major histocompatibility complex (MHC) phenotypes. We have used murine bone marrow transplantation models to analyze the influence of donor and host MHC on an NK cell subset. We examined the expression of Ly-49, which is strongly expressed on a subpopulation of NK cells of H-2b mice, but not by NK cells of H-2a mice, probably because of a negative effect induced by the interaction of Ly-49 with Dd. To evaluate the effect of hematopoietic cell H-2a expression on Ly-49 expression of H-2b NK cells, we prepared mixed allogeneic chimeras by administering T cell-depleted allogeneic (B10.A, H-2a) and host-type (B10, H-2b) marrow to lethally irradiated B10 mice, or by administering B10. A marrow to B10 recipients conditioned by a nonmyeloablative regimen. Expression of H-2a on bone marrow-derived cells was sufficient to downregulate Ly-49 expression on both H-2a and H-2b NK cells. This downregulation was thymus independent. To examine the effect of H-2a expressed only on radioresistant host elements, we prepared fully allogeneic chimeras by administering B10 bone marrow to lethally irradiated B10.A recipients. B10 NK cells of these fully allogeneic chimeras also showed downregulation of Ly-49 expression. The lower level of H-2a expressed on H-2b x H-2a F1 cells induced more marked downregulation of Ly-49 expression on B10 NK cells when presented on donor marrow in mixed chimeras than when expressed only on radioresistant host cells. Our studies show that differentiation of NK cells is determined by interactions with MHC molecules expressed on bone marrow-derived cells and, to a lesser extent, by MHC antigens expressed on radioresistant host elements.
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Affiliation(s)
- M Sykes
- Transplantation Research Biology Center, Massachusetts General Hospital, Harvard Medical School, Boston 02129
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