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Alexander NB, Knutson D, Morrow LK, Klimasmith I, Smith EM, Spellman M, Rivera M, Scherz M, Fountain K, Allen-Custodio LT, Lynch L, Clarkberg TE, Coon JJ. Disparities, Concerns, and Recommendations for LGBTQ+ Data Collection within the Biological Sciences. Bioscience 2023. [DOI: 10.1093/biosci/biad011] [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: 03/04/2023] Open
Affiliation(s)
- Nathan B Alexander
- Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana–Champaign , Urbana, Illinois , United States
| | - Douglas Knutson
- School of Community Health Sciences, Counseling, and Counseling Psychology, Oklahoma State University , Stillwater, Oklahoma , United States
| | - Leslie K Morrow
- Department of Education Policy, Organization, and Leadership, University of Illinois Urbana–Champaign , Urbana, Illinois , United States
| | - Isaac Klimasmith
- Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana–Champaign , Urbana, Illinois , United States
| | - Emmett M Smith
- Department of Biology, Earlham College, Richmond , Indiana , United States
| | - Madeleine Spellman
- Department of Biology, Earlham College, Richmond , Indiana , United States
| | - Michael Rivera
- Program in Ecology, Evolution, and Conservation Biology, University of Illinois, Urbana–Champaign , Urbana, Illinois , United States
| | - Maxine Scherz
- Department of Environmental Sustainability, Earlham College , Richmond, Indiana , United States
| | - Kae Fountain
- Humboldt State University , Arcata, California , United States
| | | | - Loren Lynch
- Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana–Champaign , Urbana, Illinois , United States
| | - Thea E Clarkberg
- Department of Biology, Earlham College, Richmond , Indiana , United States
| | - Jaime J Coon
- Department of Environmental Sustainability, Earlham College , Richmond, Indiana , United States
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Coon JJ, Alexander NB, Smith EM, Spellman M, Klimasmith IM, Allen‐Custodio LT, Clarkberg TE, Lynch L, Knutson D, Fountain K, Rivera M, Scherz M, Morrow LK. Best practices for
LGBTQ
+ inclusion during ecological fieldwork: Considering safety, cis/heteronormativity and structural barriers. J Appl Ecol 2023. [DOI: 10.1111/1365-2664.14339] [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: 01/20/2023]
Affiliation(s)
- Jaime J. Coon
- Department of Biology Earlham College Richmond Indiana USA
- Department of Environmental Sustainability Earlham College Richmond Indiana USA
| | - Nathan B. Alexander
- Department of Natural Resources and Environmental Sciences University of Illinois at Urbana‐Champaign Urbana Illinois USA
| | | | - Madeleine Spellman
- Department of Biology Earlham College Richmond Indiana USA
- Department of Environmental Sustainability Earlham College Richmond Indiana USA
| | - Isaac M. Klimasmith
- Department of Natural Resources and Environmental Sciences University of Illinois at Urbana‐Champaign Urbana Illinois USA
| | | | | | - Loren Lynch
- Department of Natural Resources and Environmental Sciences University of Illinois at Urbana‐Champaign Urbana Illinois USA
| | - Douglas Knutson
- School of Community Health Sciences, Counseling and Counseling Psychology Oklahoma State University Stillwater Oklahoma USA
| | | | - Michael Rivera
- Program in Ecology, Evolution, and Conservation Biology University of Illinois at Urbana‐Champaign Urbana Illinois USA
| | - Maxine Scherz
- Department of Biology Earlham College Richmond Indiana USA
- Department of Environmental Sustainability Earlham College Richmond Indiana USA
| | - Leslie K. Morrow
- Lesbian, Gay, Bisexual, and Transgender Resource Center University of Illinois at Urbana‐Champaign Urbana Illinois USA
- Department of Education Policy, Organization and Leadership University of Illinois Urbana‐Champaign Urbana Illinois USA
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Eichenfield L, Call R, Forsha D, Fowler J, Hebert A, Spellman M, Stein Gold L, Van Syoc M, Zane L, Tschen E. O064 Long-term safety of crisaborole topical ointment, 2%, in atopic dermatitis. Ann Allergy Asthma Immunol 2016. [DOI: 10.1016/j.anai.2016.09.425] [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: 10/20/2022]
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Eichenfield L, Call R, Forsha D, Fowler J, Hebert A, Spellman M, Stein Gold L, Van Syoc M, Zane L, Tschen E. 280 Long-term safety of crisaborole topical ointment, 2%, in atopic dermatitis. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.310] [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: 10/21/2022]
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Gottlieb A, Krueger JG, Bright R, Ling M, Lebwohl M, Kang S, Feldman S, Spellman M, Wittkowski K, Ochs HD, Jardieu P, Bauer R, White M, Dedrick R, Garovoy M. Effects of administration of a single dose of a humanized monoclonal antibody to CD11a on the immunobiology and clinical activity of psoriasis. J Am Acad Dermatol 2000; 42:428-35. [PMID: 10688712 DOI: 10.1016/s0190-9622(00)90214-7] [Citation(s) in RCA: 163] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND CD11a/CD18 comprise subunits of leukocyte function associated antigen (LFA-1), a T-cell surface molecule important in T-cell activation, T-cell emigration into skin, and cytotoxic T-cell function. OBJECTIVE We explored the immunobiologic and clinical effects of treating moderate to severe psoriasis vulgaris with a single dose of humanized monoclonal antibody against CD11a (hu1124). METHODS This was an open label study with a single dose of hu1124 at doses of 0.03 to 10 mg/kg. Clinical (Psoriasis Area and Severity Index [PASI]) and immunohistologic parameters (epidermal thickness, epidermal and dermal T-cell numbers, and keratinocyte intercellular adhesion molecule 1 [ICAM-1] expression) were followed. RESULTS Treatment with hu1124, at doses higher than 1.0 mg/kg (group III), completely blocks CD11a staining for at least 14 days in both blood and psoriatic plaques. At 0.3 to 1.0 mg/kg, T-cell CD11a staining was completely blocked; however, blockade lasted less than 2 weeks (group II). Only partial saturation of either blood or plaque cellular CD11a was observed at doses of hu1124 between 0.01 and 0.1 mg/kg (group I). This pharmacodynamic response was accompanied by decreased numbers of epidermal and dermal CD3(+) T cells, decreased keratinocyte and blood vessel expression of ICAM-1, and epidermal thinning. Statistically significant drops in PASI compared with baseline were observed in group II patients at weeks 3 and 4 and in group III patients at weeks 2 through 10. No significant drop in PASI score was observed in group 1. Adverse events were mild at doses of 0.3 mg/kg or less and included mild chills, abdominal discomfort, headache, and fever. At a single dose of 0.6 mg/kg or higher, headache was the most common dose-limiting toxicity observed. CONCLUSION Targeting CD11a may improve psoriasis by inhibiting T-cell activation, T-cell emigration into the skin, and cytotoxic T-cell function.
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Affiliation(s)
- A Gottlieb
- Clinical Research Center, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, New Brunswick, New Jersey, USA
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Cleland JL, Kensil CR, Lim A, Jacobsen NE, Basa L, Spellman M, Wheeler DA, Wu JY, Powell MF. Isomerization and formulation stability of the vaccine adjuvant QS-21. J Pharm Sci 1996; 85:22-8. [PMID: 8926578 DOI: 10.1021/js9503136] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.5] [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: 02/03/2023]
Abstract
The stability of the immunologic adjuvant QS-21 (Cambridge Biotech Corp.) was optimized for use in the MN rgp120 HIV-1 subunit vaccine. QS-21, a saponin purified by reversed phase HPLC from an extract of the bark of the Quillaja saponaria Molina tree, consisted initially of one species (QS-21A), but converted to two species, QS-21A and QS-21B, in aqueous solution. NMR studies indicated that the two species are structural isomers and that isomerization occurs by intramolecular trans-esterification of the fatty acid moiety between the 3- and 4-hydroxyl groups of the fucose ring (Jacobsen et al. Carbohydr. Res., in press). Both isomers were adjuvant active. Storage of QS-21 in aqueous solution resulted in the interconversion between these isomer forms, as well as the slow formation of degradation products due to ester hydrolysis. The critical micellar concentration of QS-21 in succinate buffer was measured by a fluorescent probe method to be 51 +/- 9 micrograms/mL. Studies were performed at different concentrations of QS-21 to assess the influence of micelle formation on stability. These experiments indicated that QS-21 is more stable in the micellar form, presumably because the most labile ester bond linking the fatty acid moiety to fucose is constrained or buried in the hydrophobic micellar environment. The pH of maximum stability was pH 5.5, the pH for minimum degradation of most esters. The final formulation, 500 micrograms/mL QS-21 in 20 mM sodium succinate, 150 mM NaCl, pH 5.5, provided a shelf-life of greater than 2 years.
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Affiliation(s)
- J L Cleland
- Pharmaceutical R & D, Department Genentech, Inc., S. San Francisco, CA 94080-4990, USA
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Eibschutz B, Baird SM, Weisman MH, Amox DG, Spellman M, Piacquadio D, Carrera CJ, Carson DA. Oral 2-chlorodeoxyadenosine in psoriatic arthritis. A preliminary report. Arthritis Rheum 1995; 38:1604-9. [PMID: 7488281 DOI: 10.1002/art.1780381112] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
OBJECTIVE To determine if weekly oral 2-chlorodeoxyadenosine (2-CdA) can induce selective lymphocytopenia, and reduce inflammation, in patients with refractory psoriatic arthritis. METHODS Seven patients with psoriatic arthritis were treated with oral 2-CdA at weekly dosages of 0.3 mg/kg to 0.45 mg/kg for 12 weeks, followed by monthly maintenance therapy. The patients were evaluated after 6 months. RESULTS The drug treatment produced selective lymphocytopenia, and reduced lymphocyte infiltration into involved skin. One patient did not complete 12 weeks of therapy because of perceived lack of efficacy. Four of the 6 remaining patients had improved joint disease, and 5 of 6 had improved psoriasis. CONCLUSION Weekly oral 2-CdA appears to be a well-tolerated regimen for the inducement of peripheral lymphocytopenia in patients with psoriatic arthritis. Larger-scale, controlled trials may be warranted.
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Affiliation(s)
- B Eibschutz
- University of California, San Diego, La Jolla, USA
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Glen AI, Glen EM, Horrobin DF, Vaddadi KS, Spellman M, Morse-Fisher N, Ellis K, Skinner FS. A red cell membrane abnormality in a subgroup of schizophrenic patients: evidence for two diseases. Schizophr Res 1994; 12:53-61. [PMID: 8018585 DOI: 10.1016/0920-9964(94)90084-1] [Citation(s) in RCA: 172] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
There are several reports of abnormalities in fatty acids in brain and blood phospholipids in schizophrenic patients. In order to see if the broad categories of negative and positive schizophrenia were linked to specific changes in fatty acids, an initial study was made of patients showing severe symptoms of these two types. Thirteen patients had persistent chronic negative symptoms of apathy and withdrawal while 12 patients had persistent positive symptoms of either thought disorder or hallucinations and delusions. The positive and negative groups were matched for length of history and drug exposure. Negative symptoms were associated with high levels of saturated fatty acids and low levels of long-chain unsaturates in red blood cell (RBC) membranes, while the positive symptom patients showed the opposite picture. In order to see if this bimodal distribution would be found in patients diagnosed as schizophrenic but without classification of symptoms, we examined frequency distribution curves for fatty acids in plasma and in RBC membranes in 68 individuals classified as schizophrenics and 259 normal individuals. A bimodal distribution was found for 20- and 22-carbon unsaturated fatty acids in RBC membranes from the schizophrenics; the same fatty acids in normal RBC membranes showed an unimodal distribution.
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Affiliation(s)
- A I Glen
- Highland Psychiatric Research Group, Craig Dunain Hospital, Inverness, UK
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Kendler KS, McGuire M, Gruenberg AM, O'Hare A, Spellman M, Walsh D. The Roscommon Family Study. IV. Affective illness, anxiety disorders, and alcoholism in relatives. Arch Gen Psychiatry 1993; 50:952-60. [PMID: 8250681 DOI: 10.1001/archpsyc.1993.01820240036005] [Citation(s) in RCA: 109] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
OBJECTIVES This report seeks to evaluate the specificity of the familial liability to schizophrenia by examining in the relatives of the various proband groups the risk for affective illness (AI), anxiety disorders, and alcoholism. DESIGN A case-controlled epidemiologic family study using DSM-III-R criteria. PARTICIPANTS Three hundred eighty-four index probands from a psychiatric case register, 150 unselected control probands from an electoral register and 2043 of their living and traceable relatives, of whom 1753 were personally interviewed. RESULTS In personally interviewed relatives of schizophrenic probands, the lifetime risk for all AI (24.9% +/- 3.8%) or just bipolar AI (1.2% +/- 0.7%) was very similar to that found in interviewed relatives of controls (22.8% +/- 4.0% and 1.4% +/- 0.7%, respectively). However, the risk for all AI (49.7% +/- 12.9%) or bipolar AI (4.8% +/- 3.2%) was substantially increased in relatives of schizoaffective probands. A substantially higher proportion of relatives of schizophrenic vs control probands who had AI demonstrated psychotic--and specially mood-incongruent psychotic--symptoms when affectively ill. Neither the risk for anxiety disorders nor that for alcoholism was increased in relatives of schizophrenic vs control probands. CONCLUSIONS The familial liability to schizophrenia possesses some specificity and does not substantially increase the risk to AI, anxiety disorders, or alcoholism. Even when narrowly defined, schizoaffective disorder has a substantial familial link to classic AI. The familial liability to schizophrenia predisposes to psychosis, and especially mood-incongruent psychosis, when affectively ill. Finally, these results do not support the hypothesis that, from a familial perspective, schizophrenia and AI are on a single etiologic continuum.
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Affiliation(s)
- K S Kendler
- Department of Psychiatry, Medical College of Virginia/Virginia Commonwealth University, Richmond
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Kendler KS, McGuire M, Gruenberg AM, O'Hare A, Spellman M, Walsh D. The Roscommon Family Study. III. Schizophrenia-related personality disorders in relatives. Arch Gen Psychiatry 1993; 50:781-8. [PMID: 8215802 DOI: 10.1001/archpsyc.1993.01820220033004] [Citation(s) in RCA: 184] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
OBJECTIVES We sought to clarify the familial relationship between five putative schizophrenia-related personality disorders (schizotypal [SPD], paranoid, schizoid, avoidant, and borderline) and schizophrenia, other nonaffective psychoses, and affective illness. DESIGN A case-controlled epidemiologic family study using DSM-III-R criteria. PARTICIPANTS Five hundred thirty-four probands selected from a psychiatric case register or electoral register, of whom 415 were personally interviewed, and 2043 living and traceable relatives, of whom 1753 were personally interviewed. RESULTS Compared with relatives of unscreened controls, relatives of probands with schizophrenia had a highly significantly increased prevalence of SPD, and modest, but significant, increased prevalences of paranoid, schizoid, and avoidant personality disorders. Borderline personality disorder was rare, with a modest clustering of cases in relatives of affective disorder probands. The prevalence of SPD was also significantly elevated in relatives of probands with SPD and with other nonaffective psychoses but not in relatives of probands with psychotic or nonpsychotic affective illness. In contrast to the pattern seen for schizophrenia, the prevalence rate of SPD was substantially greater in parents than in siblings of schizophrenic probands. CONCLUSIONS Schizotypal personality disorder has a strong familial relationship with schizophrenia. Paranoid, schizoid, and avoidant, but not borderline, personality disorders may have a significant familial relationship with schizophrenia. Schizotypal personality disorder also reflects the familial liability to other psychotic disorders but probably not to affective illness. Fitness effects may substantially influence the pattern of schizophrenia-related personality disorders in relatives.
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Affiliation(s)
- K S Kendler
- Department of Psychiatry, Medical College of Virginia/Virginia Commonwealth University, Richmond
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Kendler KS, McGuire M, Gruenberg AM, Spellman M, O'Hare A, Walsh D. The Roscommon Family Study. II. The risk of nonschizophrenic nonaffective psychoses in relatives. Arch Gen Psychiatry 1993; 50:645-652. [PMID: 8343035 DOI: 10.1001/archpsyc.1993.01820200059006] [Citation(s) in RCA: 79] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
OBJECTIVE We sought to clarify the familial relationship between the nonschizophrenic, nonaffective psychoses (schizoaffective disorder [SAD], schizophreniform disorder, delusional disorder, and atypical psychosis) and schizophrenia and affective illness (AI). DESIGN A case-controlled epidemiologic family study using DSM-III-R criteria. RESULTS Compared with relatives of unscreened controls, the risk of nonschizophrenic, nonaffective psychoses was significantly elevated in relatives of probands with schizophrenia, SAD, schizotypal personality disorder, and psychotic AI. No significant elevation in risk to these disorders was seen in relatives of probands with nonpsychotic AI. The risk for SAD alone was significantly increased in relatives of probands with psychotic or bipolar AI. CONCLUSIONS The nonschizophrenic, nonaffective psychoses have a significant familial relationship with both schizophrenia and schizotypical personality disorder. Schizoaffective disorder, as defined by DSM-III-R, shares familial etiologic factors with at least some forms of AI.
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Affiliation(s)
- K S Kendler
- Department of Psychiatry, Medical College of Virginia, Virginia Commonwealth University, Richmond
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Kendler KS, McGuire M, Gruenberg AM, O'Hare A, Spellman M, Walsh D. The Roscommon Family Study. I. Methods, diagnosis of probands, and risk of schizophrenia in relatives. Arch Gen Psychiatry 1993; 50:527-40. [PMID: 8317947 DOI: 10.1001/archpsyc.1993.01820190029004] [Citation(s) in RCA: 353] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
OBJECTIVES We sought to examine, in a rural county in the West of Ireland, the degree of familial relationship between schizophrenia and other nonaffective psychoses and affective illness (AI). DESIGN A case-controlled epidemiologic family study using DSM-III-R criteria. PARTICIPANTS This study included three proband groups: (1) all cases with a clinical diagnosis of schizophrenia from the Roscommon County Case Register born from 1930 onward (n = 285); (2) a random sample of cases from the register with a clinical diagnosis of severe AI (n = 99); and (3) a matched, random sample of Roscommon residents ascertained from the electoral register (n = 150). Face-to-face structured interviews were conducted with 86% of traceable, living relatives (n = 1, 753) and 88% of traceable, living probands (n = 415). RESULTS In interviewed relatives, the lifetime risks (+/- SE) for schizophrenia, as a function of the "blind" proband diagnosis, were as follows: schizophrenia, 6.5% +/- 1.6%; schizoaffective disorder, 6.8% +/- 2.5%; schizotypal personality disorder, 6.9% +/- 3.9%; other nonaffective psychoses, 5.1% +/- 2.4%; psychotic AI, 2.8% +/- 1.2%; nonpsychotic AI, 0.6% +/- 0.6%; and control, 0.5% +/- 0.3%. Individuals with schizophrenia reproduced at a rate about one quarter that of controls and the risk for schizophrenia in parents of probands was much less than that found in siblings. CONCLUSIONS These results support the following hypotheses: (1) in the West of Ireland, as in other populations, schizophrenia is a strongly familial disorder; (2) schizophrenia shares a familial predisposition with a spectrum of clinical syndromes that includes schizoaffective disorder, other nonaffective psychoses, schizotypal personality disorder, and probably psychotic AI, but not nonpsychotic AI; and (3) the diminished reproductive rates associated with schizophrenia have a large impact on the pattern of risk of illness in relatives.
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Affiliation(s)
- K S Kendler
- Department of Psychiatry, Medical College of Virginia, Virginia Commonwealth University, Richmond
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Gregory T, Hoxie J, Watanabe C, Spellman M. Structure and function in recombinant HIV-1 gp120 and speculation about the disulfide bonding in the gp120 homologs of HIV-2 and SIV. Adv Exp Med Biol 1991; 303:1-14. [PMID: 1805558 DOI: 10.1007/978-1-4684-6000-1_1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- T Gregory
- Dept. of Process Sciences, Genentech, Inc., So. San Francisco, CA 94080
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Horrobin DF, Manku MS, Morse-Fisher N, Vaddadi KS, Courtney P, Glen AI, Glen E, Spellman M, Bates C. Essential fatty acids in plasma phospholipids in schizophrenics. Biol Psychiatry 1989; 25:562-8. [PMID: 2920191 DOI: 10.1016/0006-3223(89)90216-3] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Blood samples were taken from schizophrenics and control patients in three different centers. The phospholipids were extracted from plasma and their fatty acid composition analyzed. Similar and consistent differences between schizophrenics and controls were observed at all three centers. The n-6 essential fatty acid levels were significantly reduced, whereas n-3 essential fatty acids were elevated.
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Affiliation(s)
- D F Horrobin
- Efamol Research Institute, Kentville, Nova Scotia, Canada
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Cook CM, Spellman M, Tolbert NE, Stringer CD, Hartman FC. Characterization of an active-site peptide modified by glyoxylate and pyridoxal phosphate from spinach ribulosebisphosphate carboxylase/oxygenase. Arch Biochem Biophys 1985; 240:402-12. [PMID: 3860189 DOI: 10.1016/0003-9861(85)90045-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Activated ribulosebisphosphate carboxylase/oxygenase from spinach was treated with glyoxylate plus or minus the transition-state analog, carboxyarabinitol bisphosphate, or the inactive enzyme with pyridoxal phosphate plus or minus the substrate, ribulose bisphosphate. Covalently modified adducts with glyoxylate or pyridoxal phosphate were formed following reduction with sodium borohydride. The derivatized enzymes were carboxymethylated and digested with trypsin; the labeled peptides which were unique to the unprotected samples were purified by ion-exchange chromatography and gel filtration. Both glyoxylate and pyridoxal phosphate were associated with only one major peptide, which in each case was subjected to amino acid analysis and sequencing. The sequence was -Tyr-Gly-Arg-Pro-Leu-Leu-Gly-Cys(Cm)-Thr-Ile-Lys-Lys*-Pro-Lys-, with both reagents exhibiting specificity for the same lysine residue as indicated by the asterisk. This peptide is identical to that previously isolated from spinach carboxylase labeled with either of two different phosphorylated affinity reagents and homologous to one from Rhodospirillum rubrum carboxylase modified by pyridoxal phosphate. The species invariance of this lysine residue, number 175, and the substantial conservation of adjacent sequence support the probability for a functional role in catalysis of the lysyl epsilon-amino group.
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Fee WE, Okamoto E, Spellman M, Ward PH. Temporal arterial ligation in head and neck surgery with absorbable sutures. Laryngoscope 1978; 88:619-31. [PMID: 642660 DOI: 10.1002/lary.1978.88.4.619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Temporary arterial ligation is a useful concept in head and neck surgery for situations dealing with potential recurrent hemorrhage or recurrent vascular neoplasms. In this study, several absorbable sutures, including plain gut, chromic gut, and polyglycolic acid were used to ligate the common carotid artery in dogs. Arterial patency was followed by serial selective arteriograms. Only polyglycolic acid sutures proved to be a reliable material to achieve transient arterial occlusion.
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Spellman M. Crash victim burns to fly. Soc Rehabil Rec 1974; 1:9-11. [PMID: 4608208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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