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Bose P, Verstovsek S, Naqvi K, Jabbour E, DiNardo C, Alvarado Y, Pemmaraju N, Daver N, Kadia T, Short N, Jain N, Benton C, Takahashi K, Estrov Z, Cortes J, Nogueras-Gonzalez G, Huang X, Villarreal J, Pierce S, Wilson L, Tse S, Kantarjian H, Ravandi F. PF673 PHASE 1/2 STUDY OF RUXOLITINIB (RUX) PLUS DECITABINE (DAC) IN PATIENTS (PTS) WITH POST-MYELOPROLIFERATIVE NEOPLASM ACUTE MYELOID LEUKEMIA (POST-MPN AML). Hemasphere 2019. [DOI: 10.1097/01.hs9.0000560976.91141.38] [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: 11/25/2022] Open
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Villarreal J, Alarcón V, Alarcón-Arrascue E, Moore DAJ, Heldal E, Mendoza-Ticona A. Tuberculosis in children treated with second-line drugs under programmatic conditions in Lima, Peru. Int J Tuberc Lung Dis 2018; 22:1307-1313. [PMID: 30355410 DOI: 10.5588/ijtld.17.0911] [Citation(s) in RCA: 1] [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: 11/10/2022] Open
Abstract
OBJECTIVE To characterise childhood tuberculosis (TB) treated with second-line drugs (SLDs) in Lima, Peru. DESIGN Results for the age groups <5 and 5-14 years were compared and treatment outcomes were assessed in cases reported between 2011 and 2015 from six districts of Lima. RESULTS Of 96 reported cases, 82 were evaluated. Among these, 59% were boys; the median age was 8 years and 32% were aged <5 years. Contact with a TB case was reported in 82% of cases; 90% were treatment-naïve, 98% had pulmonary localisation and 50% underwent the tuberculin skin test (purified protein derivative), with induration 10 mm in 88%. A positive smear was found in 40%, all in the 5-14 years age group, and 46% were culture-positive. Only 26% had confirmed multidrug-resistant TB, 90% of whom were in the 5-14 years age group. SLDs for confirmed or probable drug-resistant TB (DR-TB) were administered to all cases, with a high proportion of success (over 83%), no failures or deaths and a high proportion of loss to follow-up. CONCLUSION The main indication for SLDs in childhood TB was the empirical treatment of DR-TB due to contact with one or more identified DR-TB patients. Bacteriological confirmation was limited; however, treatment success was adequate.
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Affiliation(s)
| | - V Alarcón
- Estrategia Sanitaria Nacional de Prevención y Control de la Tuberculosis, Ministerio de Salud, Lima, Peru
| | | | - D A J Moore
- London School of Hygiene & Tropical Medicine, London, UK
| | - E Heldal
- International Union Against Tuberculosis and Lung Disease, Oslo, Norway
| | - A Mendoza-Ticona
- Hospital de Emergencias Villa El Salvador, Ministerio de Salud, Lima, Peru
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Xipell M, Victoria I, Hoffmann V, Villarreal J, García-Herrera A, Reig O, Rodas L, Blasco M, Poch E, Mellado B, Quintana LF. Acute tubulointerstitial nephritis associated with atezolizumab, an anti-programmed death-ligand 1 (pd-l1) antibody therapy. Oncoimmunology 2018; 7:e1445952. [PMID: 29900063 DOI: 10.1080/2162402x.2018.1445952] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 02/20/2018] [Accepted: 02/23/2018] [Indexed: 12/14/2022] Open
Abstract
Direct stimulation of the antitumor activity of immune system through checkpoint inhibitors (ICIs) has demonstrated efficacy in the treatment of different cancer types. The activity of these antibodies takes place in the immunological synapse blocking the binding of the negative immunoregulatory proteins, thus leading to the finalization of the immune response. Despite having a favorable toxicity profile, its mechanism of action impedes the negative regulation of the immune activity which can potentially favor autoimmune attacks to normal tissues. Renal toxicity has been described in several ICI but not with atezolizumab, an IgG1 monoclonal antibody targeting PD-L1 (programmed death ligand 1), approved by FDA as a second-line therapy for advanced urothelial carcinoma. Here we present a patient with a single kidney and metastatic renal cell carcinoma treated with atezolizumab and bevacizumab combination, with biopsy-proven acute interstitial nephritis, who had a complete resolution of renal dysfunction after steroid therapy.
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Affiliation(s)
- M Xipell
- Nephrology and Renal Transplantation Department, Hospital Clínic, IDIBAPS, Universitat de Barcelona, Barcelona, Spain
| | - I Victoria
- Oncology Department, Hospital Clínic, IDIBAPS, Universitat de Barcelona, Barcelona, Spain
| | - V Hoffmann
- Nephrology and Renal Transplantation Department, Hospital Clínic, IDIBAPS, Universitat de Barcelona, Barcelona, Spain
| | - J Villarreal
- Nephrology and Renal Transplantation Department, Hospital Clínic, IDIBAPS, Universitat de Barcelona, Barcelona, Spain
| | - A García-Herrera
- Pathology Department, Hospital Clínic, IDIBAPS, Universitat de Barcelona, Barcelona, Spain
| | - O Reig
- Oncology Department, Hospital Clínic, IDIBAPS, Universitat de Barcelona, Barcelona, Spain
| | - L Rodas
- Nephrology and Renal Transplantation Department, Hospital Clínic, IDIBAPS, Universitat de Barcelona, Barcelona, Spain
| | - M Blasco
- Nephrology and Renal Transplantation Department, Hospital Clínic, IDIBAPS, Universitat de Barcelona, Barcelona, Spain
| | - E Poch
- Nephrology and Renal Transplantation Department, Hospital Clínic, IDIBAPS, Universitat de Barcelona, Barcelona, Spain
| | - B Mellado
- Oncology Department, Hospital Clínic, IDIBAPS, Universitat de Barcelona, Barcelona, Spain
| | - L F Quintana
- Nephrology and Renal Transplantation Department, Hospital Clínic, IDIBAPS, Universitat de Barcelona, Barcelona, Spain
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Patel DI, Winkler P, Botello J, Villarreal J, Puga F. The citizen scientist: Community-academic partnerships through Translational Advisory Boards. Patient Educ Couns 2016; 99:2087-2090. [PMID: 27432015 DOI: 10.1016/j.pec.2016.07.013] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 06/06/2016] [Accepted: 07/03/2016] [Indexed: 05/28/2023]
Abstract
OBJECTIVE To describe the effectiveness of engaging patient partners as "citizen scientists" in the research process to boost patient centered outcomes research in underrepresented populations. METHODS Translational Advisory Boards in South Texas have effectively collaborated with University researchers to develop community-based patient centered research. Here we describe innovative approaches in research to engage patients and offer practical methods to enhance partnerships between patients and researchers to facilitate patient engagement. RESULTS Three health issues identified by the TABs were diabetes, obesity and teen pregnancy Examples of other community inspired research topics include air and water quality, methicillin-resistant staphylococcus aureus, intimate partner violence, chronic pain, and human papilloma virus and hepatitis C vaccinations. CONCLUSION Patient engagement of underrepresented populations is inverse to the vast disparities they experience. In order to adequately address our nation's deficits in providing equitable healthcare, we must fully integrate disparate partners into the research process. By engaging community champions, academic health centers can fully integrate meaningful interventions on topics of interest to the catchment area in which they serve. PRACTICE IMPLICATIONS These lessons can be used in developing local and regional collaborations across the country to boost active participation of patient stakeholder in PCOR to reduce healthcare disparities and improve our healthcare systems.
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Affiliation(s)
- Darpan I Patel
- Department of Health Restoration and Care Systems Management, School of Nursing, University of Texas Health Science Center at San Antonio, San Antonio, USA; Cancer Therapy and Research Center, University of Texas Health Science Center at San Antonio, San Antonio, USA.
| | - Paula Winkler
- South Central Area Health Education Center, Center for South Texas Programs University of Texas Health Science Center at San Antonio, San Antonio, USA
| | - Jorge Botello
- Winter Garden Texas Translational Advisory Board, TX, USA
| | | | - Frank Puga
- Department of Health Restoration and Care Systems Management, School of Nursing, University of Texas Health Science Center at San Antonio, San Antonio, USA
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Brogliatti G, Villarreal J, Cutaia L, Albrech A, Garcia Guerra A, Bó GA. 290 OPTIMAL OF DOSE OF OVINE PITUITARY GLAND EXTRACT OVAGEN® FOR SUPERSTIMULATION OF BEEF COW DONORS IN ARGENTINA. Reprod Fertil Dev 2009. [DOI: 10.1071/rdv21n1ab290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The success of an embryo transfer program is measured by the number of calves born alive by female donor in a given period. The success is influenced by several factors related to the number of ovulations, fertilization rate, and embryo viability (Armstrong D 1993 Theriogenology 39, 7–24). One of the main inconveniences of embryo transfer programs is the variability of superovulatory response to treatments. An experiment was designed to determine the optimal dose of ovine pituitary gland extract Ovagen® (ICPbio, Ltd., Auckland, New Zealand) for inducing superovulation in Aberdeen Angus donor cows. Sixty cycling multiparous donors with a condition score between 3.5 and 4.5 (Scale 1 to 5) were used. All donors received an intravaginal progesterone device DIB (1 g of Progesterone, Syntex, Buenos Aires, Argentina), along with 2 mg of EB (Estradiol Benzoate, Syntex, Buenos Aires, Argentina) and 50 mg of progesterone (Laboratorio Rio de Janeiro, Argentina) on Day 0. Superestimulatory treatment began on Day 4 and donors were randomly assigned to 3 treatment groups according to the total dose of NIADDK-oFSH-Z (Ovagen®) as follows: Group 1, cows received the total dose recommended by the manufacturer (100%* Group), 17.6 mg; Group 2, cows received 75% of the total dose recommended by manufacturer (75% Group), 13.2 mg and Group 3, cows received 50% of the total dose recommended by manufacturer (50% Group), 8.8 mg. All cows received two 150 μg of D+ cloprostenol IM (Ciclase, Syntex) injections on Day 6 given at 12 h interval. DIB was removed on Day 7 a.m. On Day 8 a.m., cows received 0.05 mg of GnRH IM (Gonasyn, Syntex). Fixed time AI was done on Day 8 p.m. and Day 9 a.m. with high quality frozen–thawed semen. On Day 15 embryo collection was performed by non-surgically method and evaluated by developmental stage and quality. The efficiency of superestimulatory response was evaluated by total amount of collected ova-embryos, fertilized ova and embryos Grade 1, 2, and 3, (according to IETS manual). One way AOV test was used to compare variables among groups and results are shown in Table 1. A significant increase in total CL was observed for the groups receiving 75% or 100% of the recommended dose with respect to the group receiving 50% of that dose. There was also a significant greater number of grade 1 embryos for the groups receiving 75% or 100% of the dose than in the group receiving 50% of the recommended dose. There were no differences for any of the evaluated parameters between 75% and 100% dose groups. These results suggest that acceptable superstimulatory responses can be obtained using reduced doses of Ovagen® in Aberdeen Angus donor cows. (*) the percentage makes reference to the total dose recommended by the laboratory of origin.
Table 1.Embryo collection results of superstimulated donors with different dose* of NIADDK-oFSH-Z (Ovagen)
Research supported by Syntex S.A. and Eolia S.A.
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Garcia Guerra A, Bó GA, Villarreal J, Brogliatti GM. 295 SUPEROVULATORY RESPONSE IN COWS FOLLOWING SYNCHRONIZATION OF FOLLICLE WAVE EMERGENCE WITH ESTRADIOL AT DIFFERENT STAGES OF THE ESTROUS CYCLE. Reprod Fertil Dev 2008. [DOI: 10.1071/rdv20n1ab295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Ovarian asynchrony and variability in response to superstimulation remain the most limiting factors in any embryo transfer program (Armstrong D 1993 Theriogenology 39, 7–24). Ovarian response can be increased and less variable if superstimulatory treatment is started at the time of follicular wave emergence (Bö GA et al. 1995 Theriogenology 43, 31–40). A combination of progesterone (P4) and estradiol have been used to synchronize follicular wave for superstimulation. A retrospective analysis was done to compare the ovarian response, superovulatory response and embryo production of cows in Argentina that received progesterone and estradol prior to superstimulation at different stages of the estrous cycle. This research was carried out using different breed of donors (n = 584, 88% Angus) during the last 4 years in Buenos Aires province, Argentina. Heat detection was performed twice a day. At random stages of the estrous cycle, donors received an intravaginal progesterone device (DIB; Syntex, Buenos Aires, Argentina), 2 mg of estradiol benzoate and 50 mg of progesterone (Syntex, Buenos Aires, Argentina) IM on the same day. On day 4 after DIB insertion, superestimulatory treatment was initiated on a decreasing dose regimen of FSH (Pluset; Callier, Spain, or Folltropin, Bioniche Animal Health Inc., Belleville, Ontario, Canada) as IM injections every 12 h over 4 d. On day 6, DIBs were removed, and cows received two doses of 2 mL of cloprostenol 12 h apart. At heat detection, all donors received a dose of 2 mL of GnRH (Dalmarelin; Fatro Von Franken, Buenos Aires, Argentina) by IM injection and were inseminated 12 and 24 h later. Seven days later, embryo collection was performed and ovarian response was evaluated as number of CL + unovulated follicles by transrectal ultrasound using a 7.5-MHz transducer (Pie Medical, Maastricht, the Netherlands). Ova/embryos were evaluated and classified according to the IETS manual. Donors were assigned to receive DIB and estradiol during the following stages of the cycle: group 1: between days 4 and 7 post-estrus (dominant follicle period), group 2: between days 8 and 12 post-estrus (emergence of the second follicular wave), and group 3: between days 13 and 21 post-estrus (dominant follicle of the second wave). Kruskal-Wallis test was used to compare variables among groups, and results are shown in Table 1. Ovarian response as CL + unovulated follicles and number of ovulations were significantly different among groups (P < 0.05). However, there was no significant difference in the number of fertilized ova or transferable embryos. Nevertheless, numeric differences that show that group 2 (started between days 8 and 12 post-estrus) was always superior for all variables. In conclusion, data suggest that estradiol may be more effective in synchronizing follicle wave emergence for superstimulation during the mid-part of the estrous cycle.
Table 1. Superovulatory response in cows in which follicle wave emergence was synchronized with estradiol at different stages of the estrous cycle (mean ± SD)
Research supported by Centro Genetico Bovino Eolia S.A.
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Villarreal J, Garcia Guerra A, Brogliatti GM. 151 EFFECT OF RECIPIENT CATEGORY ON PREGNANCY RATES ON A BOVINE EMBRYO TRANSFER PROGRAM IN PATAGONIA, ARGENTINA. Reprod Fertil Dev 2008. [DOI: 10.1071/rdv20n1ab151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The fertility of the recipient is one of the more important factors conditioning the success of an embryo transfer (ET) program. Selection and management of recipients is a very important contributing factor to achieve high pregnancy rates (Stroud and Hasler 2006 Theriogenology 65, 65–76). From a reproductive point of view, a good recipient is a cow capable of receiving an embryo and taking it to term (Palma et al. 2001 Biotecnologia de la reproduccion, INTA). In beef and dairy cattle, recipients are categorized according to number of births, age, and condition score (Stroud and Hasler 2006). A retrospective analysis was done to confirm a relationship between recipient category, based on their physiologic and reproductive stage, and pregnancy rates. The analysis was done during January and February (2006–2007) based on data recovered from an embryo transfer program done in Chubut province (Patagonia) for the project ‘Polo Genetico Angus’ (Angus Association – Chubut government agreement). Two hundred and seven morulas and/or blastocysts, quality 1 or 2 frozen in 1.5 m ethylene glycol (IETS manual), were transferred randomly in 10 different farms. Embryos were thawed for 10 s at room temperature and 30 s in a water bath at 35°C and transferred by one single technician. Angus, Hereford, or its breeds were used as recipients. A reproductive exam was performed before embryo transfer and, based on it, recipients were classified into 4 categories: heifer (3–4 years old), lactating cow, weaned cow, and dry old cow (Table 1). The synchronization protocol used for recipients consisted of a single administration of D-cloprostenol and heat detection twice a day for 5 days. Data were analyzed by Cochran-Mantel-Haenszel test (chi-square). Results are shown in Table 1. There is a significant difference (P ≤ 0.05) in pregnancy rates among categories. Recipients with higher pregnancy rates were lactating cows and weaned cows 61.6% and 56.9%, respectively, compared to heifers, 45.3%; a lower pregnancy rate was founded in the dry old cows group. Dry cows were animals that failed to get pregnant during the last season. Heifers also were animals that failed the artificial insemination program. In both groups, the reduced fertility may explain their lower pregnancy rates. In conclusion, selection toward fertility of recipients is a very important factor to take into account to design a successful embryo transfer program.
Table 1. Pregnancy rates for recipient categories in an ET program in Chubut (Patagonia), Argentina
This research was supported by Centro Genetico Bovino Eolia.
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Cortez E, Verastegui R, Villarreal J, Laane J. Low-frequency vibrational spectra and ring-puckering potential energy function of 1,3-dioxole. A convincing demonstration of the anomeric effect. J Am Chem Soc 2002. [DOI: 10.1021/ja00078a060] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [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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Villarreal J, Sood M, Zangen T, Flores A, Michel R, Reddy N, Di Lorenzo C, Hyman PE. Colonic diversion for intractable constipation in children: colonic manometry helps guide clinical decisions. J Pediatr Gastroenterol Nutr 2001; 33:588-91. [PMID: 11740234 DOI: 10.1097/00005176-200111000-00014] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.7] [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: 12/13/2022]
Abstract
BACKGROUND Colonic manometry helps discriminate functional and behavioral causes for childhood constipation from colonic neuromuscular disease. METHODS Of 375 colonic manometries performed for clinical indications, 12 could not be interpreted because of chronic colonic dilation. Based on colonic manometries that showed either no contractions or an absence of the gastrocolonic response or an absence of high-amplitude propagating contractions, the authors recommended diverting colostomies or ileostomies in 12 chronically constipated children (mean age, 4 years; range, 2-14 years, 5 boys). Before study, medical treatment was ineffective in all children. These children had persistently dilated colons with pathologic diagnoses of intestinal neuronal dysplasia (n = 4), hypoganglionosis (n = 2), hollow visceral myopathy (n = 1), and normal (n = 5). RESULTS Six to 30 months after diversion, the authors restudied all the children. Eleven of 12 diverted colons were no longer dilated. In two patients, abnormal motility involving the entire colon was unchanged from the initial study, small bowel motility was abnormal, and we recommended no further surgery. In two cases, the colon remained abnormal but small bowel motility was normal, and we recommended subtotal colectomy and ileoproctostomy. In four cases, the left colon remained abnormal, but the right colon was normal, and we recommended reanastomosis after left hemicolectomy. In four cases, motility in the diverted colons was normal, including a gastrocolonic response and high-amplitude propagating contractions, and the authors recommended reanastomosis. Defecation problems resolved in 10 of 12 when followed up 5 to 30 months after treatment. CONCLUSION These data suggest that in some cases of intractable childhood constipation associated with colonic distention, temporary diversion improved colonic motility. Colonic manometry may be used to predict which patients will benefit from resection or reanastomosis.
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Affiliation(s)
- J Villarreal
- Pediatric Gastrointestinal Motility Center, Children's Hospital of Orange County, Orange, California, U.S.A
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Balada E, Ordi-Ros J, Paredes F, Villarreal J, Mauri M, Vilardell-Tarrés M. Antiphosphatidylethanolamine antibodies contribute to the diagnosis of antiphospholipid syndrome in patients with systemic lupus erythematosus. Scand J Rheumatol 2001; 30:235-41. [PMID: 11578020 DOI: 10.1080/030097401316909594] [Citation(s) in RCA: 29] [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] [Indexed: 10/17/2022]
Abstract
OBJECTIVE To evaluate the correlation between antiphosphatidylethanolamine antibodies (aPE) and some antiphospholipid antibodies (aPL)-related clinical manifestations in patients with systemic lupus erythematosus (SLE). METHODS Patients with SLE (n=217) were tested for the presence of aPE, anticardiolipin antibodies (aCL), and lupus anticoagulant (LA). The prospective aPL-related clinical manifestations studied were: thrombosis, thrombocytopenia, recurrent fetal losses, heart valvulopathies, hemolytic anemia, livedo reticularis, and pulmonary hypertension. RESULTS A total of 109 SLE patients (50.23%) were IgG aPE-positive; 17.51% presented aPE as the sole autoantibody and had some clinical features of aPL-related clinical manifestations. IgG aPE were associated to the presence of heart valvulopathies (p=0.002). A statistical difference was also found when considering high levels of IgG aPE (O.D.>0.600) in patients with livedo reticularis (p=0.008). CONCLUSION The evaluation of IgG aPE may allow us to detect some more patients with aPL-related clinical manifestations in the SLE population, aPE correlated particularly with valvulopathies and livedo reticularis.
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Affiliation(s)
- E Balada
- Department of Internal Medicine, Hospital Vall d'Hebron, Universidad Autónoma de Barcelona, Spain
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Villarreal J, Crosdale D, Ollier W, Hajeer A, Thomson W, Ordi J, Balada E, Villardell M, Teh LS, Poulton K. Mannose binding lectin and FcgammaRIIa (CD32) polymorphism in Spanish systemic lupus erythematosus patients. Rheumatology (Oxford) 2001; 40:1009-12. [PMID: 11561111 DOI: 10.1093/rheumatology/40.9.1009] [Citation(s) in RCA: 58] [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: 11/13/2022] Open
Abstract
OBJECTIVE Mannose binding lectin (MBL) and FcgammaRII (CD32) polymorphisms have both been implicated as candidate susceptibility genes in systemic lupus erythematosus (SLE). The aim of this study was to evaluate the relationship of these polymorphisms with SLE. METHODS We studied a cohort of 125 SLE patients from Barcelona, Spain and 138 geographically matched controls. Sequence-specific primer-polymerase chain reaction (SSP-PCR) amplification was used to determine CD32 and MBL structural polymorphisms. MBL haplotypes were established using sequence-specific oligonucleotide probing techniques. RESULTS Patients carried the MBL codon 54 mutant allele more frequently than controls [odds ratio (OR) 2.2; 95% confidence interval (CI) 1.2-4.0; P=0.007] and the haplotype HY W52 W54 W57 was found to be significantly lower in cases compared with controls (OR 0.6; 95% CI 0.4-0.9; P=0.016). CONCLUSION The MBL gene codon 54 mutant allele appears to be a risk factor for SLE, whilst haplotypes encoding for high levels of MBL are protective against the disease. Differences between controls and patients were not significant when considering the FcgammaRIIa polymorphisms; similar results were observed for renal affectation.
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MESH Headings
- Acute-Phase Proteins/genetics
- Acute-Phase Proteins/metabolism
- Carrier Proteins/genetics
- Carrier Proteins/metabolism
- DNA/analysis
- Gene Frequency
- Haplotypes
- Humans
- Lectins/genetics
- Lectins/metabolism
- Lupus Erythematosus, Cutaneous/genetics
- Lupus Erythematosus, Cutaneous/metabolism
- Lupus Erythematosus, Systemic/complications
- Lupus Erythematosus, Systemic/genetics
- Lupus Erythematosus, Systemic/metabolism
- Lupus Nephritis/genetics
- Lupus Nephritis/metabolism
- Lupus Vasculitis, Central Nervous System/genetics
- Lupus Vasculitis, Central Nervous System/metabolism
- Mannose-Binding Lectins
- Mutation
- Polymerase Chain Reaction
- Polymorphism, Genetic
- Receptors, IgG/genetics
- Receptors, IgG/metabolism
- Spain
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Affiliation(s)
- J Villarreal
- Hospital General Vall d'Hebron, Passieg Vall d'Hebron 119-129, Barcelona, Spain
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Ordi-Ros J, Villarreal J, Monegal F, Sauleda S, Esteban I, Vilardell M. Anticardiolipin antibodies in patients with chronic hepatitis C virus infection: characterization in relation to antiphospholipid syndrome. Clin Diagn Lab Immunol 2000; 7:241-4. [PMID: 10702499 PMCID: PMC95855 DOI: 10.1128/cdli.7.2.241-244.2000] [Citation(s) in RCA: 60] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The antiphospholipid syndrome (APS) is usually defined by the association of clinical manifestations that comprise venous and/or arterial thrombosis, recurrent fetal losses, and thrombocytopenia, along with the presence of anticardiolipin (aCL) antibodies and/or lupus anticoagulant. Various infectious diseases can induce aCL; however, these antibodies are not usually associated with thrombotic events, as happens with autoimmune diseases, in which these antibodies need the presence of beta(2)-glycoprotein I. Levels of immunoglobulin G (IgG) and IgM aCL antibodies were determined by enzyme-linked immunosorbent assay for 243 patients with chronic hepatitis C virus (HCV) infection and 100 healthy controls. Clinical events of APS, the level of beta(2)-glycoprotein dependence of aCL, the presence of cryoglobulins and other autoantibodies, and cross-reactivity between purified aCL and HCV were evaluated. Positive results for aCL antibodies were found more frequently (3. 3%) for the patients with HCV infection than for healthy controls (0%). All positive aCL antibodies were beta(2)-glycoprotein I independent. No significant association was found between aCL antibodies and clinical manifestations of APS, neither was one found between the presence of other autoantibodies or cryoglobulins and that of aCL. Finally, no cross-reactivity between aCL antibodies and HCV antigens was observed. As previously reported, aCL antibodies seem to be an epiphenomenon, and they do not have clinical or laboratory significance in HCV patients.
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Affiliation(s)
- J Ordi-Ros
- Department of Internal Medicine, Vall d'Hebron Hospital, Universitat Autonoma de Barcelona, Barcelona, Spain.
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Al-Ansari AS, Ollier WE, Villarreal J, Ordi J, Teh LS, Hajeer AH. Tumor necrosis factor receptor II (TNFRII) exon 6 polymorphism in systemic lupus erythematosus. Tissue Antigens 2000; 55:97-9. [PMID: 10703622 DOI: 10.1034/j.1399-0039.2000.550122.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Systemic lupus erythematosus (SLE) is a complex autoimmune disease that exhibits extensive clinical heterogeneity. Several studies have suggested a role for tumor necrosis factor alpha (TNFalpha) in SLE and recently, the locus encompassing the TNF receptor II (TNFRII), which is a mediator of TNF effect, was amongst the candidate loci suggested by genetic linkage studies of multi-case SLE families. Komata et al. reported an association between a polymorphism at position 196 (R allele) of TNFR II and SLE in Japanese patients. We have typed SLE patients from two different ethnic populations, Spanish and UK Caucasoids, for this polymorphism using a polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP)-based technique. No significant differences in allele or genotype frequencies were found between cases and matched controls in either population. The TNFRII 196R allele does not appear to be associated with SLE susceptibility in either Spanish or UK populations.
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Affiliation(s)
- A S Al-Ansari
- ARC Epidemiology Unit, Manchester University Medical School, UK
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Villarreal J. Team approach to HIV exposures. J Am Pharm Assoc (Wash) 1998; 38:292. [PMID: 9654857] [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: 02/08/2023]
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15
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Abstract
Previous studies suggested that yeast ribosomal protein L26 was a candidate for the ribosomal subunit interface region. The present study used protein-protein cross-linking to identify neighboring proteins in intact 80S ribosomes of Saccharomyces cerevisiae. To facilitate identification of cross-linked pairs involving L26, 80S ribosomes were first treated with 5-iodoacetamidofluorescein to selectively label L26. Protein cross-links were produced with dithiobis[succinimidyl] propionate or N-succinimidyl-3-[2-pyridyldithio] propionate and analyzed by electrophoresis on two-dimensional diagonal polyacrylamide gels containing SDS. L26 was detected under UV and its cross-linked partner, detectable after staining with Coomassie blue, was located below the diagonal and was coincident with L26 on a single vertical axis. The identity of the partner was determined by its co-migration with 60S and 40S ribosomal protein markers on two-dimensional gels. Two protein pairs involving L26 and 40S subunit proteins were identified. The finding provided experimental evidence to support that L26 is located at the ribosomal subunit interface. A model that incorporates the present findings and the published data on intra-subunit protein pairs is proposed for the yeast 80S ribosome.
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Affiliation(s)
- J Villarreal
- Department of Biochemistry, University of Texas Health Science Center, San Antonia 78284-7760, USA
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Cantú C, Villarreal J, Soto JL, Barinagarrementeria F. Cerebral cysticercotic arteritis: detection and follow-up by transcranial Doppler. Cerebrovasc Dis 1998; 8:2-7. [PMID: 9645974 DOI: 10.1159/000015808] [Citation(s) in RCA: 17] [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] [Indexed: 11/19/2022] Open
Abstract
Intracranial arteritis is a well-known complication of cerebral cysticercosis. The aim of this study was to explore the possible role of transcranial Doppler (TCD) in the evaluation of cysticercotic arteritis in 9 patients with subarachnoid cysticercosis and stroke. Arteritis of main basal vessels was detected by TCD in 7 of 10 arterial lesions that were demonstrated by cerebral angiography. The Doppler pattern was occlusive in 2 cases and stenotic in 5. In the 3 patients with lacunar infarcts, both cerebral angiography and TCD were normal. In 6 arterial lesions followed serially with TCD a stenotic pattern resolved within 4 and 6 months in 3 cases and remained in the stenotic range at 12 months in 1 case, whereas an occlusive pattern persisted at 6 and 18 months in the other 2 cases. In conclusion, TCD may be useful to detect and follow up cerebral vasculitis due to chronic cysticercotic arachnoiditis.
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Affiliation(s)
- C Cantú
- Stroke Clinic, Instituto Nacional de Neurología, Mexico City, Mexico
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Abstract
Measurement of bioimpedance (BI) is a simple non-invasive technique that relies on the different conductivity of tissues to define body composition and can be easily adapted to automated monitoring. We assessed the accuracy of BI in monitoring rehydration and acute fluid fluxes in 35 Peruvian cholera patients. Patients were monitored throughout the acute phase of diarrhoea and followed up at 3 and 10 days. BI was compared with other objective measures of dehydration including packed cell volume, serum protein, and calculated fluid balance. BI rapidly detected inadequate treatment and acute fluid flux, correlating highly with intravascular hydration as measured by serum protein and packed cell volume. BI values during dehydration were significantly raised compared with 10-day convalescent values and age-matched controls (p < 0.05). We also encountered an unexpected difference in the bioelectrical response to dehydration and rehydration between sexes. We conclude that BI has uses in monitoring dehydrated patients, in oral rehydration trials, and in physiological studies.
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Mota-Hernández F, Rodríguez-Suárez RS, Pérez-Ricardez ML, Nicolás-Aviña L, Martínez MC, Bross-Soriano D, Chávez-Luna G, Villarreal J, Mancillas J. [Treatment of diarrheic disease at home. Comparison of 2 forms of oral solutions: liquid and concentrated in small bags]. Bol Med Hosp Infant Mex 1990; 47:324-31. [PMID: 2390186] [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: 12/31/2022] Open
Abstract
One hundred children, ranging in ages from a month to a year, with acute diarrhea who were treated at home following the basic standard recommendations, were studied. In order to prevent dehydration, half of the children were given oral solution (OS) containing the concentrated official formula in packets (group A), and the remaining half was given a commercially prepared ready-to-use OS (group B). During the treatment period, two house calls were made and the third day the patient was asked to come in for a check-up at the hospital. The clinical and socioeconomic characteristics were similar in both groups. The majority of parents made some reference to the "salty" taste of their OS, while only a few thought it has a sweet taste. In Group B, there were greater numbers of relatives who did not wash their hands before administering the OS and did it through bottles. A reminder was given on suggestive signs of dehydration expected, during the second home visit, although they were few. In both groups the average amount of OS administered was greater than 40 mL/kg/24 hours. The majority of the patients gained weight during the treatment. Four patients showed signs of slight dehydration (three from group A and one from group B). The OS's bacteriologic examination was positive for enteropathogens in 16% of the samples from group A and in 5% from group B. The average time the diarrhea continued was similar for both groups. Sodium concentration ranged from 60 to 120, potassium from 15 to 30 mmol/L, in 85% of those cases in group A and 98% in group B.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- F Mota-Hernández
- Departamento de Medicinas, Hospital Infantil de México Federico Gómez, México, D.F
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Vargas-Rivera J, Ortega-Corona BG, García-Pineda J, Carranza J, Salazar LA, Villarreal J. Influence of previous housing history on the toxicity of amphetamine in aggregate mice. Arch Invest Med (Mex) 1990; 21:65-9. [PMID: 2222118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The lethality of d-amphetamine was studied in isolated and aggregated mice with and without previous habituation to the physical or to the physical and social environment of chronically aggregated social condition under which the toxic effects of d-amphetamine were tested. In animals without previous habituation to such environments, d-amphetamine's toxicity was greatly enhanced by social aggregation, as reported by several authors in the literature. It was found that mortality in the dose range from 5 to 90 mg/kg is mainly determined by the stimulation due to aggregation. Above 90 mg/kg, the mortalities in single and aggregated mice vary in parallel. Up from this dose, lethality is independent of the external stimulation. Previous experience with house sharing in aggregated conditions reduces aggregation mortality in proportion to the duration of the previous house sharing period.
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Affiliation(s)
- J Vargas-Rivera
- Laboratorio de Biología Molecular, Unidad de Investigación Biomédica del Centro Médico Nacional, IMSS, D. F
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Villarreal J. Commentary on unwanted pregnancy, induced abortion, and professional ethics: a concerned physician's point of view. Suppl Int J Gynecol Obstet 1989; 3:51-5. [PMID: 2590481 DOI: 10.1016/0020-7292(89)90103-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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21
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Villarreal J. Innovative workstation. Comput Secur 1988. [DOI: 10.1016/0167-4048(88)90220-9] [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: 10/27/2022]
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Villarreal J, Rakoff JS, Fasig CA. The In Vitro Fertilization Program at Scripps Clinic and Research Foundation, La Jolla, California. J In Vitro Fert Embryo Transf 1986; 3:383. [PMID: 3805857 DOI: 10.1007/bf01133253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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23
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Abstract
A large somatostatin-like polypeptide of apparent molecular weight 3000-4500 [4K somatostatin (SS)] was isolated from ovine hypothalamus. The polypeptide was obtained in the methionine sulfoxide form. Two microsequence analyses of 0.6 and 1.8 nmol of 4K SS were performed with a modified 890 C spinning cup sequencer. The sequencing data together with results of amino acid analysis and C-terminal end-group determination indicated that 4K SS was identical with somatostatin-28 (SS-28) isolated from procine upper small intestine and sequenced by Pradayrol et al. [Pradayrol, L., Jörnvall, H., Mutt, V., & Ribet, A. (1980) FEBS Lett. 109, 55-58]. No free cysteine sulfhydryl group could be detected, so that it was assumed that the two cysteine residues of ovine SS-28 formed an intramolecular disulfide bond. Besides the structure of SS-28, the N-terminal first 30 residues of an unknown polypeptide from ovine hypothalamus were sequenced as follows: H-Ile-Pro-Ile-Tyr-Glu-Lys-Lys-Tyr-Gly-Gln-Val-Pro-Met-Cys-Asp-Ala-Gly-Glu-Gln- Cys-Ala-Val-Arg-Lys-Gly-Ala-Arg-Ile-Gly-Lys. Trypsin cleaved the somatostatin (SS) entity less selectively from ovine hypothalamic SS-28 than from rat hypothalamic 12 000-dalton SS-like polypeptide (12K SS). Native ovine hypothalamic SS-28 was found to be highly potent in inhibit growth hormone release from cultured rat anterior pituitary cells. The results raised doubts that ovine SS-28 would be an SS precursor and indicated that SS-28 itself may possess regulatory functions.
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Cervantes LF, Villarreal J, Pico L, Aguiar M, Gordon F, Elizondo L, Fernandez S, Lifshitz A. [Gastric emptying time and serum gastrin with different types of diet]. Prensa Med Mex 1977; 42:21-6. [PMID: 896647] [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: 12/24/2022]
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26
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28
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Burgus R, Amoss M, Brazeau P, Brown M, Ling N, Rivier C, Rivier J, Vale W, Villarreal J. Isolation and characterization of hypothalamic peptide hormones. Curr Top Mol Endocrinol 1976; 3:355-72. [PMID: 28907 DOI: 10.1007/978-1-4684-2598-7_19] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Meyer EF, Morimoto CN, Villarreal J, Berman HM, Carrell HL, Stodola RK, Koetzle TF, Andrews LC, Bernstein FC, Bernstein HJ, Villarreal J. CRYSNET, a crystallographic computing network with interactive graphics display. Fed Proc 1974; 33:2402-5. [PMID: 4435248] [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: 01/10/2023]
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Bass P, Kennedy JA, Wiley JN, Villarreal J, Butler DE. CI-750, A novel antidiarrheal agent. J Pharmacol Exp Ther 1973; 186:183-98. [PMID: 4198772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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Lampert M, Villarreal J, Lopez V, Garcia R, Lozaro J, Teran J, Ahan K, Rubin F. Methocarbamol in management of tetanus. Tex Med 1966; 62:55-9. [PMID: 5931232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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