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Zhu M, Labagnara K, Loloi J, Babar M, Harandi AA, Salami A, Bernstein A, Davila J, Davuluri M, Chalouhy C, Maria P. Pudendal nerve block decreases narcotic requirements and time spent in post-anesthesia care units in patients undergoing primary inflatable penile prosthesis implantation. Int J Impot Res 2024:10.1038/s41443-024-00870-1. [PMID: 38760570 DOI: 10.1038/s41443-024-00870-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 02/27/2024] [Accepted: 03/04/2024] [Indexed: 05/19/2024]
Abstract
Efforts to minimize narcotic usage following inflatable penile prosthesis (IPP) implantation are vital, considering the current opioid epidemic in the United States. We aimed to determine whether pudendal nerve block (PNB) utilization in a multiethnic population undergoing primary IPP implantation can decrease rates of post-operative opiate usage. A single-institution, retrospective study was conducted on patients who underwent primary IPP implantation between December 2015 and June 2022. PNB usage and intra- and post-operative outcomes were analyzed using multivariate binary logistic regression. 449 patients were included, with 373 (83.1%) in the PNB group. Median time (minutes) spent in the post-anesthesia care unit (PACU) (1499 [119-198] vs. 235 [169-322], p < 0.001) was significantly lower in the PNB group. There were no significant differences in intra-operative and PACU morphine milligram equivalents or post-operative safety outcomes between groups. However, fewer patients in the PNB group called for pain medications post-operatively (10.2% vs 19.7%, p = 0.019). Multivariate analysis revealed a significantly decreased operative time (B -6.23; 95%CI -11.28, -1.17; p = 0.016) and decreased time in recovery (B: -81.62; 95%CI: -106.49, -56.76, p < 0.001) in the PNB group. PNB decreases post-operative opioid analgesic requirements and time spent in PACU in patients undergoing a primary IPP implantation and thus may represent an attractive, non-opioid adjunct.
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Affiliation(s)
- Michael Zhu
- Albert Einstein College of Medicine, Bronx, NY, USA
| | | | - Justin Loloi
- Department of Urology, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY, USA
| | | | | | | | - Ari Bernstein
- Department of Urology, New York University Langone Health, New York, NY, USA
| | - Jonathan Davila
- Department of Urology, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY, USA
| | - Meenakshi Davuluri
- Department of Urology, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY, USA
| | - Charbel Chalouhy
- Department of Urology, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY, USA
| | - Pedro Maria
- Department of Urology, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY, USA.
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Amarnani A, Lopez-Ocasio M, Dilshat R, Anumukonda K, Davila J, Malakhov N, Huan C, Magnusdottir E, Steingrimsson E, Roman CA. Mitf regulates gene expression networks implicated in B cell homeostasis, germinal center responses, and tolerance. Front Immunol 2024; 15:1339325. [PMID: 38444862 PMCID: PMC10912573 DOI: 10.3389/fimmu.2024.1339325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 01/08/2024] [Indexed: 03/07/2024] Open
Abstract
Introduction The microphthalmia transcription factor Mitf has been shown to regulate B cell activation and tolerance. However, the underlying B cell-specific mechanisms responsible, and those that distinguish Mitf from closely related Mitf/TFE (MiT) transcription factors Tfe3, Tfeb, and Tfec, remain obscure. Methods Two complementary mouse models of Mitf and MiT deficiency were used: the Mitfmi-vga9/mi-vga9 systemic loss-of-function mutation, and B-cell specific MiT family inactivation via transgenic expression of a trans-dominant negative (TDN) protein (TDN-B). These models were employed to identify MiT family candidate target genes and pathways. Results Both models displayed spontaneous splenomegaly coincident with elevated plasma cell numbers, autoantibody titers, and proteinuria. These abnormalities appeared dependent on T helper cells, but independent of other non-B cell intrinsic effects of systemic Mitf inactivation. MiT inactivation in B cells augmented aspects of lupus-like autoimmune disease on the C57BL/6-Faslpr/lpr background. In both models, RNAseq of ex vivo resting B cells showed transcriptional upregulation of genes that control cell cycle, germinal center responses, and plasma cell differentiation. Among the genes strongly upregulated in both models were Socs6, Isp53 (Baiap1), S1pR2, and IgG2b/c. Mitf null B cells, but not TDN-B cells, showed evidence of type I interferon dysregulation. Discussion These studies clarify Mitf's role as 1) a key regulator of a B cell intrinsic germinal center program that influences self-tolerance through novel target genes, and 2) a regulator of systemic inflammatory processes that can impact the B cell microenvironment. This distinction of Mitf's function from that of related MiT transcription factors advances our understanding of B cell regulation and autoimmunity.
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Affiliation(s)
- Abhimanyu Amarnani
- Program in Molecular and Cellular Biology, School of Graduate Studies, State University of New York (SUNY) Downstate Health Sciences University, Brooklyn, NY, United States
- School of Medicine, State University of New York (SUNY) Downstate Health Sciences University, Brooklyn, NY, United States
- Department of Medicine, Division of Rheumatology, New York University Langone Health, New York, NY, United States
| | - Maria Lopez-Ocasio
- Program in Molecular and Cellular Biology, School of Graduate Studies, State University of New York (SUNY) Downstate Health Sciences University, Brooklyn, NY, United States
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States
| | - Ramile Dilshat
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Biomedical Center, University of Iceland, Reykjavik, Iceland
| | - Kamala Anumukonda
- Program in Molecular and Cellular Biology, School of Graduate Studies, State University of New York (SUNY) Downstate Health Sciences University, Brooklyn, NY, United States
- Anuko Tech Inc., Hillsborough, NJ, United States
| | - Jonathan Davila
- School of Medicine, State University of New York (SUNY) Downstate Health Sciences University, Brooklyn, NY, United States
- Department of Urology, Northwell Health, Staten Island, NY, United States
| | - Nikita Malakhov
- School of Medicine, State University of New York (SUNY) Downstate Health Sciences University, Brooklyn, NY, United States
- Department of Hematology and Oncology, NewYork-Presbyterian-Weill Cornell Medical Center, New York, NY, United States
| | - Chongmin Huan
- Program in Molecular and Cellular Biology, School of Graduate Studies, State University of New York (SUNY) Downstate Health Sciences University, Brooklyn, NY, United States
| | - Erna Magnusdottir
- Department of Anatomy, Faculty of Medicine, Biomedical Center, University of Iceland, Reykjavik, Iceland
| | - Eirikur Steingrimsson
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Biomedical Center, University of Iceland, Reykjavik, Iceland
| | - Christopher A. Roman
- Program in Molecular and Cellular Biology, School of Graduate Studies, State University of New York (SUNY) Downstate Health Sciences University, Brooklyn, NY, United States
- School of Medicine, State University of New York (SUNY) Downstate Health Sciences University, Brooklyn, NY, United States
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Dave P, Patel RD, Desai K, Davila J, Sankin A. A Procedural Checklist for Transurethral Resection of Bladder Tumors (TURBT) Enhances Operative Dictation and Assesses Surgeon Accuracy of Tumor Characteristic Predictions. Bladder Cancer 2023; 9:335-344. [PMID: 38174124 PMCID: PMC10759802 DOI: 10.3233/blc-230074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 10/28/2023] [Indexed: 01/05/2024]
Abstract
BACKGROUND A lack of standardization is pervasive in procedural application and reporting templates for TURBT with the use of a surgical checklist proposed as a means for quality improvement. OBJECTIVE To introduce a TURBT checklist to assess surgeon prediction accuracy and the impact of standardized documentation on quality of resection and oncologic outcomes. METHODS Nine critical elements of a high-quality TURBT identified by literature review were incorporated into a prospectively implemented checklist for operative reports. The checklist included both visualized and predicted tumor characteristics. A retrospective single-institution analysis compared quality of dictation pre- and post-checklist implementation. Surgeon predictions were compared to final pathology reports to determine rates of concordance. Kaplan-Meier curves examined the association of checklist use with recurrence free survival (RFS). RESULTS 333 operative reports were included in this analysis, of which 107 (32.1%) were completed pre-checklist implementation. The average number of critical elements reported was 8.69 with checklist use compared to 4.99 without (p < 0.001). There was no significant difference in RFS between the pre- and post-checklist cohorts (log-rank test p = 0.53). Surgeons were least and most accurate in predicting low grade tumor (43.5%) and absence of muscle invasion (96.6%), respectively. CONCLUSIONS Incorporation of a TURBT surgical checklist improves operative dictation and quality of reporting but did not directly impact RFS. With quality of initial resection a proven correlate to recurrence rates, checklist implementation to improve surgical performance and long-term oncologic outcomes reveals an interesting area of exploration highlighting the need for more standardized methodology when performing these procedures.
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Affiliation(s)
- Priya Dave
- Department of Urology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Rutul D. Patel
- Department of Urology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Kush Desai
- Department of Urology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Jonathan Davila
- Smith Institute for Urology, Northwell Health, Lake Success, NY, USA
| | - Alex Sankin
- Department of Urology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
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Loloi J, Davila J, Babar M, Gottlieb J, Maria P, Donnelly J, Small AC. Case series - Small bowel obstruction secondary to retained male urinary and sexual prostheses reservoirs. Can Urol Assoc J 2022; 16:E403-E405. [PMID: 35230942 DOI: 10.5489/cuaj.7773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Justin Loloi
- Department of Urology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Jonathan Davila
- Department of Urology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Mustufa Babar
- Albert Einstein College of Medicine, Bronx, NY, United States
| | - Josh Gottlieb
- Department of Urology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Pedro Maria
- Department of Urology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Jillian Donnelly
- Department of Urology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Alexander C Small
- Department of Urology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, United States.,Albert Einstein College of Medicine, Bronx, NY, United States
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Kim JI, Zhu D, Davila J, Lee J, Chubak BM, Melamed ML, Abraham N. Female Sexual Dysfunction as Measured by Low Sexual Frequency is Associated with Lower Socioeconomic Status: An Analysis of the National Health and Nutrition Examination Survey (NHANES), 2007-2016. J Sex Med 2022; 19:90-97. [PMID: 34696997 DOI: 10.1016/j.jsxm.2021.09.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 04/12/2021] [Revised: 08/04/2021] [Accepted: 09/24/2021] [Indexed: 01/23/2023]
Abstract
BACKGROUND Female sexual dysfunction (FSD) is a complex disorder of biopsychosocial etiology, and FSD symptoms affect more than 40% of adult women worldwide. AIM In this cross-sectional study, we sought to investigate the association between FSD and socioeconomic status (SES) in a nationally representative female adult population. METHODS Economic and sexual data for women aged 20-59 from the 2007-2016 National Health and Nutrition Examination Survey, a United States nationwide representative database, was analyzed. Poverty income ratio (PIR), a ratio of family income to poverty threshold, was used as a measure of SES, and low sexual frequency was used as a measure of FSD. The association between FSD and SES was analyzed using survey-weighted logistic regression after adjusting for relevant social and gynecologic covariates, such as marital status and history of pregnancy, as well as significant medical comorbidities. OUTCOMES We found that FSD, as measured by low sexual frequency, was associated with lower SES. RESULTS Among the 7,348 women of mean age 38.4 (IQR 29-47) included in the final analysis, 26.3% of participants reported sexual frequency of 0-11 times/year and 73.7% participants reported sexual frequency >11 times/year. Participants of PIR <2 were 92% more likely to report sexual frequency ≤11 times/year than those of PIR ≥2 after adjusting for demographics, social history, gynecologic history and significant medical conditions (OR = 1.92; 95% CI = 1.21-3.05; P < .006). CLINICAL IMPLICATIONS The evaluation and treatment of FSD may benefit from a comprehensive approach that takes SES into account. STRENGTHS & LIMITATIONS This study is limited by its cross-sectional design, but it is strengthened by a large, nationally representative sample with extensive, standardized data ascertainment. CONCLUSION Lower SES and lower sexual frequency are directly correlated among female adults in the United States; future studies should focus on social determinants of health as risk factors for FSD.
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Affiliation(s)
- Joseph I Kim
- Albert Einstein College of Medicine, Bronx, NY, USA
| | - Denzel Zhu
- Albert Einstein College of Medicine, Bronx, NY, USA
| | - Jonathan Davila
- Department of Urology, Montefiore Medical Center, Bronx, NY, USA
| | - Justin Lee
- Department of Urology, Columbia University Medical Center, New York, NY, USA
| | - Barbara M Chubak
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Michal L Melamed
- Albert Einstein College of Medicine, Bronx, NY, USA
- Division of Nephrology, Department of Medicine, Montefiore Medical Center, Bronx, NY, USA
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Nitya Abraham
- Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Urology, Montefiore Medical Center, Bronx, NY, USA
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Saavedra L, Portman T, Haag D, Davila J, Shafer TJ, Wallace K, Freudenrich T, Liu H. In vitro neurotoxicity testing using functional human iPSC-derived neurons. J Pharmacol Toxicol Methods 2021. [DOI: 10.1016/j.vascn.2021.106976] [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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Abi-Gerges N, McMahon C, Vargas H, Sager P, Chui R, Stevens D, Davila J, Schaub JR, Wu JC, Del Rio C, Mathes C, Miller PE, Burns-Naas LA, Ghetti A. The West coast regional safety pharmacology society meeting update: Filling translational gaps in safety assessment. J Pharmacol Toxicol Methods 2019; 98:106582. [PMID: 31077805 DOI: 10.1016/j.vascn.2019.106582] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 05/07/2019] [Indexed: 12/20/2022]
Abstract
The Safety Pharmacology Society (SPS) held a West Coast Regional Meeting in Foster City, CA on November 14, 2018 at the Gilead Sciences Inc. site. The meeting was attended by scientists from the pharmaceutical and biotechnology industry, contract research organizations (CROs) and academia. A variety of scientific topics were presented by speakers, covering a broad variety of topics in the fields of safety risk assessment; from pro-arrhythmia and contractility risk evaluation, to models of heart failure and seizure in-a-dish; and discovery sciences; from stem cells and precision medicine, to models of inherited cardiomyopathy and precision cut tissue slices. The present review summarizes the highlights of the presentations and provides an overview of the high level of innovation currently underlying many frontiers in safety pharmacology.
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Affiliation(s)
| | | | | | - Philip Sager
- Stanford University, School of Medicine, Stanford, CA 94305, USA
| | - Ray Chui
- Amgen Inc., Thousand Oaks, CA 92320, USA
| | - Dale Stevens
- Genentech Inc., South San Francisco, CA 94080, USA
| | | | | | - Joseph C Wu
- Stanford University School of Medicine, Stanford Cardiovascular Institute, Stanford, CA 94305, USA
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Davila J, Cruz F. Supplementary motor area low frequency repetitive transcranial magnetic stimulation in addition to left dorsolateral prefrontal cortex theta burst stimulation to enhance effectiveness of refractory depression treatment. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.554] [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: 11/26/2022] Open
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Tam AW, Khusid J, Inoyatov I, Becerra AZ, Davila J, Chouhan JD, Weiss JP, Hyacinthe LM, McNeil BK, Winer AG. Changes observed in prostate biopsy practices in an inner city hospital with a high risk patient population following the 2012 uspstf psa screening recommendations. Int Braz J Urol 2018; 44:697-703. [PMID: 29617073 PMCID: PMC6092647 DOI: 10.1590/s1677-5538.ibju.2017.0348] [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] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 02/06/2018] [Indexed: 12/31/2022] Open
Abstract
INTRODUCTION We compared characteristics of patients undergoing prostate biopsy in a high-risk inner city population before and after the 2012 USPSTF recommendation against PSA based prostate cancer screening to determine its effect on prostate biopsy practices. MATERIALS AND METHODS This was a retrospective study including patients who received biopsies after an abnormal PSA measurement from October 2008-December 2015. Patients with previously diagnosed prostate cancer were excluded. Chi-square tests of independence, two sample t-tests, Mann-Whitney U tests, and Fisher's exact tests were performed. RESULTS There were 202 and 208 patients in the pre-USPSTF and post-USPSTF recommendation cohorts, respectively. The post-USPSTF cohort had higher median PSA (7.8 versus 7.1ng/mL, p=0.05), greater proportion of patients who were black (96.6% versus 90.5%, p=0.01), and greater percentage of biopsy cores positive for disease (58% versus 29.5%, p<0.001). Multivariable analysis supported that the increase in PSA was independent of the increase in the proportion of patients who were black. The proportion of patients who were classified as D'Amico intermediate and high-risk disease increased in the post-USPSTF cohort and approached statistical significance (70.1% versus 58.8%, p=0.12). CONCLUSIONS Our study suggests that the USPSTF recommendations may have led to na increase in pre-biopsy PSA as well as greater volume of disease. Also, a greater proportion of patients were being classified with intermediate or high risk disease. While the clinical significance of these findings is unknown, what the data suggests is somewhat troubling. Future research should further examine these changes in a larger cohort as well as resultant long-term outcomes.
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Affiliation(s)
- Andrew W Tam
- Department of Urology, University Hospital of Brooklyn, State University of New York Downstate College of Medicine, Brooklyn, NY, USA
| | - Johnathan Khusid
- Department of Urology, University Hospital of Brooklyn, State University of New York Downstate College of Medicine, Brooklyn, NY, USA
| | - Igor Inoyatov
- Department of Urology, University Hospital of Brooklyn, State University of New York Downstate College of Medicine, Brooklyn, NY, USA
| | - Adan Z Becerra
- Department of Public Health Sciences and Division of Epidemiology, University of Rochester Medical Center, Rochester, NY, USA.,Department of Surgery, University of Rochester Medical Center, Surgical Health Outcomes and Research Enterprise (SHORE), Rochester, NY, USA
| | - Jonathan Davila
- Department of Urology, University Hospital of Brooklyn, State University of New York Downstate College of Medicine, Brooklyn, NY, USA
| | - Jyoti D Chouhan
- Department of Urology, University Hospital of Brooklyn, State University of New York Downstate College of Medicine, Brooklyn, NY, USA
| | - Jeffrey P Weiss
- Department of Urology, University Hospital of Brooklyn, State University of New York Downstate College of Medicine, Brooklyn, NY, USA
| | - Llewellyn M Hyacinthe
- Department of Urology, University Hospital of Brooklyn, State University of New York Downstate College of Medicine, Brooklyn, NY, USA
| | - Brian K McNeil
- Department of Urology, University Hospital of Brooklyn, State University of New York Downstate College of Medicine, Brooklyn, NY, USA
| | - Andrew G Winer
- Department of Urology, University Hospital of Brooklyn, State University of New York Downstate College of Medicine, Brooklyn, NY, USA
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Moore GP, Byrne A, Davila J, Sarfi E, Bettolli M. Worsening anemia associated with volvulus in a stable neonate with intestinal obstruction. J Neonatal Perinatal Med 2018; 11:417-422. [PMID: 30584174 DOI: 10.3233/npm-17118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Intrauterine intestinal obstruction complicated by midgut volvulus is a serious life-threatening diagnosis. Immediate surgical intervention is generally the course of action upon diagnosis to prevent morbidity and mortality. We report a case of intrauterine intestinal obstruction where the neonate then presented with an unusual onset of volvulus within the first 12 hours of life. The patient was born with generalized edema, a distended abdomen, and pallor. Unlike many cases, the patient did not present with typical signs of volvulus. Diagnostic imaging preceding delivery and the stable postnatal clinical course did not offer a justification for immediate laparotomy. Less than 24 hours later, the patient's hemoglobin significantly dropped leading to an emergent laparotomy. Findings included a volvulus of the terminal ileum and large amounts of intraluminal blood. Our case report includes an analysis of clinical observations that should be considered so that patients presenting with similar signs receive earlier surgical intervention.
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Affiliation(s)
- G P Moore
- Division of Neonatology, Children's Hospital of Eastern Ontario, Canada
- Faculty of Medicine, University of Ottawa, Canada
| | - A Byrne
- Department of Pediatrics, Children's Hospital of Eastern Ontario, Canada
| | - J Davila
- Faculty of Medicine, University of Ottawa, Canada
- Department of Medical Imaging, Children's Hospital of Eastern Ontario, Canada
| | - E Sarfi
- Department of Medical Imaging, Children's Hospital of Eastern Ontario, Canada
| | - M Bettolli
- Faculty of Medicine, University of Ottawa, Canada
- Department of Surgery, Children's Hospital of Eastern Ontario, Canada
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Abstract
BACKGROUND The effect of life stress on suicidal symptoms during adolescence is well documented. Stressful life events can trigger suicidality, but most adolescents are resilient and it is unclear which factors protect against the deleterious impact of stress. Social support is thought to be one such factor. Therefore, we investigated the buffering effect of specific sources of social support (parental and peer) on life stress (interpersonal and non-interpersonal) in predicting suicidal symptoms during adolescence. In order to test the specificity of this stress buffering, we also examined it with regard to dysphoric mood. METHOD Data come from the Adolescent Development of Emotions and Personality Traits (ADEPT) Project, a cohort of 550 adolescent females aged 13.5-15.5 recruited from Long Island. Self-reported social support, suicidality, and dysphoria were assessed at baseline and suicidality and dysphoria were assessed again at 9-month follow-up. Life stress was assessed by interview at the follow-up. RESULTS High levels of parental support protected adolescent girls from developing suicidal symptoms following a stressor. This effect was less pronounced for peer support. Also, social support did not buffer the pathogenic effects of non-interpersonal stress. Finally, social support did not buffer the effect of life stress on dysphoric symptoms. CONCLUSIONS Altogether, our results highlight a distinct developmental pathway for the development of suicidal symptoms involving parental support that differs from the development of dysphoria, and signifies the importance and specificity of social support in protecting against suicidality in adolescent girls.
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Affiliation(s)
- D M Mackin
- Stony Brook University,Stony Brook, NY,USA
| | - G Perlman
- Stony Brook University,Stony Brook, NY,USA
| | - J Davila
- Stony Brook University,Stony Brook, NY,USA
| | - R Kotov
- Stony Brook University,Stony Brook, NY,USA
| | - D N Klein
- Stony Brook University,Stony Brook, NY,USA
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Shariff MA, Klingbeil L, Martingano D, Carlucci RF, Michael R, Davila J, Sadel SM, Nabagiez JP, McGinn JT. Minimally Invasive Valve Surgery and Single Vessel Coronary Artery Bypass via Limited Anterior Right Thoracotomy. Heart Surg Forum 2015; 18:E266-70. [PMID: 26726719 DOI: 10.1532/hsf.1319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 07/22/2015] [Accepted: 08/11/2015] [Indexed: 11/20/2022]
Abstract
BACKGROUND Coronary artery bypass grafting with aortic valve replacement (AVR) or mitral valve replacement (MVR) is traditionally performed via sternotomy. Minimally invasive coronary surgery (MICS) and minimally invasive valve surgery have been successfully performed independently. Patients with critical right coronary artery (RCA) stenosis not amenable to percutaneous intervention are candidates for valve replacement and single vessel coronary artery bypass. We present our series of six patients who underwent a concomitant valve and single vessel intervention via right thoracotomy. METHODS Between January 2011 and June 2013, six patients underwent right thoracotomy with valve replacement and single vessel bypass. Four aortic and two mitral valves were replaced and all received single vessel RCA bypass using reversed saphenous vein graft. Thoracotomy was via right anterior approach for AVR and right lateral for MVR. The patients were assessed postoperatively for overall outcomes. RESULTS The average age was 74 years (range 69-81); two patients were elective (AVR-1; MVR-1) and four were urgent (AVR-3; MVR-1). For MICS AVR and MICS MVR, the average cardiopulmonary bypass time was 171 ± 30 and 169 ± 7 minutes and the average aortic cross-clamp time was 122 ± 36 and 112 ± 2 minutes, respectively. Three patients were discharged home, one patient to a nursing home, and two to rehab. No patients required conversion to sternotomy; one patient developed atrial fibrillation, and one sepsis. CONCLUSION Concomitant valve replacement and single bypass grafting via right anterior mini-thoracotomy is a viable option for select patients, particularly in non-stentable RCA stenosis. In the appropriate patient population, combined coronary artery bypass grafting and valve surgery can be safely performed via right thoracotomy.
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Affiliation(s)
- Masood A Shariff
- Department of Cardiothoracic Surgery, Staten Island University Hospital, North Shore-LIJ Medical Center, Staten Island, New York
| | - Laura Klingbeil
- Department of Cardiothoracic Surgery, Staten Island University Hospital, North Shore-LIJ Medical Center, Staten Island, New York
| | | | - Robert F Carlucci
- Department of Cardiothoracic Surgery, Staten Island University Hospital, North Shore-LIJ Medical Center, Staten Island, New York
| | - Rami Michael
- Department of Surgery, Greenville Hospital System, Greenville, South Carolina
| | - Jonathan Davila
- Staten Island University Hospital Downstate Medical Center, Brooklyn, New York
| | - Scott M Sadel
- Department of Cardiac Anesthesiology, Staten Island University Hospital, North Shore-LIJ Medical Center, Staten Island, New York
| | - John P Nabagiez
- Department of Cardiothoracic Surgery, Staten Island University Hospital, North Shore-LIJ Medical Center, Staten Island, New York
| | - Joseph T McGinn
- Department of Cardiothoracic Surgery, Staten Island University Hospital, North Shore-LIJ Medical Center, Staten Island, New York
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Durruthy-Durruthy J, Sebastiano V, Wossidlo M, Cepeda D, Cui J, Grow EJ, Davila J, Mall M, Wong WH, Wysocka J, Au KF, Reijo Pera RA. The primate-specific noncoding RNA HPAT5 regulates pluripotency during human preimplantation development and nuclear reprogramming. Nat Genet 2015; 48:44-52. [PMID: 26595768 DOI: 10.1038/ng.3449] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 10/22/2015] [Indexed: 12/14/2022]
Abstract
Long intergenic noncoding RNAs (lincRNAs) are derived from thousands of loci in mammalian genomes and are frequently enriched in transposable elements (TEs). Although families of TE-derived lincRNAs have recently been implicated in the regulation of pluripotency, little is known of the specific functions of individual family members. Here we characterize three new individual TE-derived human lincRNAs, human pluripotency-associated transcripts 2, 3 and 5 (HPAT2, HPAT3 and HPAT5). Loss-of-function experiments indicate that HPAT2, HPAT3 and HPAT5 function in preimplantation embryo development to modulate the acquisition of pluripotency and the formation of the inner cell mass. CRISPR-mediated disruption of the genes for these lincRNAs in pluripotent stem cells, followed by whole-transcriptome analysis, identifies HPAT5 as a key component of the pluripotency network. Protein binding and reporter-based assays further demonstrate that HPAT5 interacts with the let-7 microRNA family. Our results indicate that unique individual members of large primate-specific lincRNA families modulate gene expression during development and differentiation to reinforce cell fate.
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Affiliation(s)
- Jens Durruthy-Durruthy
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California, USA.,Department of Genetics, Stanford University, Stanford, California, USA.,Department of Obstetrics and Gynecology, Stanford University, Stanford, California, USA
| | - Vittorio Sebastiano
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California, USA.,Department of Genetics, Stanford University, Stanford, California, USA.,Department of Obstetrics and Gynecology, Stanford University, Stanford, California, USA
| | - Mark Wossidlo
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California, USA.,Department of Genetics, Stanford University, Stanford, California, USA.,Department of Obstetrics and Gynecology, Stanford University, Stanford, California, USA
| | - Diana Cepeda
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California, USA.,Department of Genetics, Stanford University, Stanford, California, USA.,Department of Obstetrics and Gynecology, Stanford University, Stanford, California, USA
| | - Jun Cui
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California, USA.,Department of Genetics, Stanford University, Stanford, California, USA.,Department of Obstetrics and Gynecology, Stanford University, Stanford, California, USA
| | - Edward J Grow
- Department of Genetics, Stanford University, Stanford, California, USA
| | - Jonathan Davila
- Department of Pathology, Stanford University, Stanford, California, USA
| | - Moritz Mall
- Department of Pathology, Stanford University, Stanford, California, USA
| | - Wing H Wong
- Department of Statistics, Stanford University, Stanford, California, USA
| | - Joanna Wysocka
- Department of Chemical and Systems Biology, Stanford University, Stanford, California, USA.,Department of Developmental Biology, Stanford University, Stanford, California, USA
| | - Kin Fai Au
- Department of Statistics, Stanford University, Stanford, California, USA
| | - Renee A Reijo Pera
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California, USA.,Department of Genetics, Stanford University, Stanford, California, USA.,Department of Obstetrics and Gynecology, Stanford University, Stanford, California, USA
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14
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Campelo MD, Lorenzo J, Benlloch L, Lopez-Pavia M, Such E, Bernal T, Luño E, Davila J, Ramos F, Calabuig M, Pomares H, Gonzalez B, Merchan B, Barranco E, Tello RS, Callejas M, Requena M, Jimenez M, Pedreño M, Vicente A, Medina A, Campeny A, Sansa MC, Pedro C, Falantes J, Arilla M, Barez A, Garcia R, Arcos M, Gomez V, Muñoz C, Cervero C, Casaño J, de Paz R, Amigo L, Insunza A, Muñoz J, Cedena M, Gomez M, Font P, del Campo R, Lago CF, Hurtado JG, Latorre ML, Casado AM, Vahi M, Sanz G, Cañizo M. 211 SPANISH REGISTRY OF ERYTHROPOIETIC STIMULATING AGENTS STUDY: THE LARGEST RETROSPECTIVE STUDY OF ESAS FOR THE TREATMENT OF ANEMIA IN LOWER RISK MDS PATIENTS. Leuk Res 2015. [DOI: 10.1016/s0145-2126(15)30212-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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Cho A, Tang Y, Davila J, Deng S, Chen L, Miller E, Wernig M, Graef IA. Calcineurin signaling regulates neural induction through antagonizing the BMP pathway. Neuron 2014; 82:109-124. [PMID: 24698271 PMCID: PMC4011666 DOI: 10.1016/j.neuron.2014.02.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [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] [Accepted: 01/24/2014] [Indexed: 12/28/2022]
Abstract
Development of the nervous system begins with neural induction, which is controlled by complex signaling networks functioning in concert with one another. Fine-tuning of the bone morphogenetic protein (BMP) pathway is essential for neural induction in the developing embryo. However, the molecular mechanisms by which cells integrate the signaling pathways that contribute to neural induction have remained unclear. We find that neural induction is dependent on the Ca(2+)-activated phosphatase calcineurin (CaN). Fibroblast growth factor (FGF)-regulated Ca(2+) entry activates CaN, which directly and specifically dephosphorylates BMP-regulated Smad1/5 proteins. Genetic and biochemical analyses revealed that CaN adjusts the strength and transcriptional output of BMP signaling and that a reduction of CaN activity leads to an increase of Smad1/5-regulated transcription. As a result, FGF-activated CaN signaling opposes BMP signaling during gastrulation, thereby promoting neural induction and the development of anterior structures.
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Affiliation(s)
- Ahryon Cho
- Department of Pathology, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, California 94305, USA
| | - Yitai Tang
- Department of Pathology, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, California 94305, USA
| | - Jonathan Davila
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Suhua Deng
- Department of Pathology, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, California 94305, USA
| | - Lei Chen
- Department of Pathology, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, California 94305, USA
| | - Erik Miller
- Department of Genetics, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, California 94305, USA
| | - Marius Wernig
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Isabella A Graef
- Department of Pathology, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, California 94305, USA
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16
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Cunningham JM, Cicek MS, Larson NB, Davila J, Wang C, Larson MC, Song H, Dicks EM, Harrington P, Wick M, Winterhoff BJ, Hamidi H, Konecny GE, Chien J, Bibikova M, Fan JB, Kalli KR, Lindor NM, Fridley BL, Pharoah PPD, Goode EL. Clinical characteristics of ovarian cancer classified by BRCA1, BRCA2, and RAD51C status. Sci Rep 2014; 4:4026. [PMID: 24504028 PMCID: PMC4168524 DOI: 10.1038/srep04026] [Citation(s) in RCA: 111] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Accepted: 01/20/2014] [Indexed: 12/20/2022] Open
Abstract
We evaluated homologous recombination deficient (HRD) phenotypes in epithelial ovarian cancer (EOC) considering BRCA1, BRCA2, and RAD51C in a large well-annotated patient set. We evaluated EOC patients for germline deleterious mutations (n = 899), somatic mutations (n = 279) and epigenetic alterations (n = 482) in these genes using NGS and genome-wide methylation arrays. Deleterious germline mutations were identified in 32 (3.6%) patients for BRCA1, in 28 (3.1%) for BRCA2 and in 26 (2.9%) for RAD51C. Ten somatically sequenced patients had deleterious alterations, six (2.1%) in BRCA1 and four (1.4%) in BRCA2. Fifty two patients (10.8%) had methylated BRCA1 or RAD51C. HRD patients with germline or somatic alterations in any gene were more likely to be high grade serous, have an earlier diagnosis age and have ovarian and/or breast cancer family history. The HRD phenotype was most common in high grade serous EOC. Identification of EOC patients with an HRD phenotype may help tailor specific therapies.
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Affiliation(s)
- J. M. Cunningham
- Department of Laboratory Medicine and Pathology, Division of Experimental Pathology, Mayo Clinic, Rochester, Minnesota
| | - M. S. Cicek
- Department of Health Sciences Research, Division of Epidemiology, Mayo Clinic, Rochester, Minnesota
| | - N. B. Larson
- Department of Health Sciences Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
| | - J. Davila
- Department of Health Sciences Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
| | - C. Wang
- Department of Health Sciences Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
| | - M. C. Larson
- Department of Health Sciences Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
| | - H. Song
- Department of Oncology, University of Cambridge, Cambridge, United Kingdom
| | - E. M. Dicks
- Department of Oncology, University of Cambridge, Cambridge, United Kingdom
| | - P. Harrington
- Department of Oncology, University of Cambridge, Cambridge, United Kingdom
| | - M. Wick
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota
| | - B. J. Winterhoff
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota
| | - H. Hamidi
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine, University of California at Los Angeles and Jonsson Comprehensive Cancer Center, Los Angeles, California
| | - G. E. Konecny
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine, University of California at Los Angeles and Jonsson Comprehensive Cancer Center, Los Angeles, California
| | - J. Chien
- Department of Translational Genomics, University of Kansas Medical Center, Kansas City, Kansas
| | | | - J.-B. Fan
- Illumina Corporation, San Diego, California
| | - K. R. Kalli
- Department of Medical Oncology, Mayo Clinic, Rochester, Minnesota
| | - N. M. Lindor
- Department of Health Science Research, Medical Genetics, Mayo Clinic, Scottsdale, Arizona
| | - B. L. Fridley
- Department of Biostatistics, University of Kansas Medical Center, Kansas City, Kansas
| | - P. P. D. Pharoah
- Department of Oncology, University of Cambridge, Cambridge, United Kingdom
- Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - E. L. Goode
- Department of Health Sciences Research, Division of Epidemiology, Mayo Clinic, Rochester, Minnesota
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17
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Castelo-Branco C, Davila J, Perelló MF, Peguero A, Ros C, Martínez-Serrano MJ, Balasch J. Long-term effect of hormone therapy on bone in early menopause: vertebral fractures after 20 years. Climacteric 2014; 17:336-41. [DOI: 10.3109/13697137.2013.871511] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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18
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Davila J, Martin R. SU-E-T-98: Towards a Three Dimensional Dosimetry Based On Diffusion Imaging Tools. Med Phys 2013. [DOI: 10.1118/1.4814533] [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: 11/07/2022] Open
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19
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Davila J, Chanda S, Ang CE, Südhof TC, Wernig M. Acute reduction in oxygen tension enhances the induction of neurons from human fibroblasts. J Neurosci Methods 2013; 216:104-9. [PMID: 23562599 DOI: 10.1016/j.jneumeth.2013.03.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 03/03/2013] [Accepted: 03/26/2013] [Indexed: 01/09/2023]
Abstract
We and others have reported the successful conversion of human fibroblasts into functional induced neuronal (iN) cells; however the reprogramming efficiencies were very low. Robust reprogramming methods must be developed before iN cells can be used for translational applications such as disease modeling or transplantation-based therapies. Here, we describe a novel approach in which we significantly enhance iN cell conversion efficiency of human fibroblast cells by reprogramming under hypoxic conditions (5% O₂). Fibroblasts were derived under high (21%) or low (5%) oxygen conditions and reprogrammed into iN cells using a combination of the four transcription factors BRN2, ASCL1, MYT1L and NEUROD1. An increase in Map2 immunostaining was only observed when fibroblasts experienced an acute drop in O₂ tension upon infection. Interestingly, cells derived and reprogrammed under hypoxic conditions did not produce more iN cells. Approximately 100% of patched cells fired action potentials in low O₂ conditions compared to 50% under high O₂ growth conditions, confirming the beneficial aspect of reprogramming under low O₂. Further characterization showed no significant difference in the intrinsic properties of iN cells reprogrammed in either condition. Surprisingly, the acute drop in oxygen tension did not affect cell proliferation or cell survival and was not synergistic with the blockade of GSK3β and Smad-mediated pathways. Our results showed that lowering the O₂ tension at the initiation of reprogramming is a simple and efficient strategy to enhance the production of iN cells which will facilitate their use for basic discovery and regenerative medicine.
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Affiliation(s)
- Jonathan Davila
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford, CA 94305, USA
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20
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21
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Pichardo-Casas I, Goff LA, Swerdel MR, Athie A, Davila J, Ramos-Brossier M, Lapid-Volosin M, Friedman WJ, Hart RP, Vaca L. Expression profiling of synaptic microRNAs from the adult rat brain identifies regional differences and seizure-induced dynamic modulation. Brain Res 2011; 1436:20-33. [PMID: 22197703 DOI: 10.1016/j.brainres.2011.12.001] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Revised: 11/24/2011] [Accepted: 12/01/2011] [Indexed: 12/01/2022]
Abstract
In recent years, microRNAs or miRNAs have been proposed to target neuronal mRNAs localized near the synapse, exerting a pivotal role in modulating local protein synthesis, and presumably affecting adaptive mechanisms such as synaptic plasticity. In the present study we have characterized the distribution of miRNAs in five regions of the adult mammalian brain and compared the relative abundance between total fractions and purified synaptoneurosomes (SN), using three different methodologies. The results show selective enrichment or depletion of some miRNAs when comparing total versus SN fractions. These miRNAs were different for each brain region explored. Changes in distribution could not be attributed to simple diffusion or to a targeting sequence inside the miRNAs. In silico analysis suggest that the differences in distribution may be related to the preferential concentration of synaptically localized mRNA targeted by the miRNAs. These results favor a model of co-transport of the miRNA-mRNA complex to the synapse, although further studies are required to validate this hypothesis. Using an in vivo model for increasing excitatory activity in the cortex and the hippocampus indicates that the distribution of some miRNAs can be modulated by enhanced neuronal (epileptogenic) activity. All these results demonstrate the dynamic modulation in the local distribution of miRNAs from the adult brain, which may play key roles in controlling localized protein synthesis at the synapse.
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Affiliation(s)
- Israel Pichardo-Casas
- Departamento de Biología Celular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, México, DF México.
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22
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Yu YM, Gibbs KM, Davila J, Campbell N, Sung S, Todorova TI, Otsuka S, Sabaawy HE, Hart RP, Schachner M. MicroRNA miR-133b is essential for functional recovery after spinal cord injury in adult zebrafish. Eur J Neurosci 2011; 33:1587-97. [PMID: 21447094 DOI: 10.1111/j.1460-9568.2011.07643.x] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
MicroRNAs (miRNAs) play important roles during development and also in adult organisms by regulating the expression of multiple target genes. Here, we studied the function of miR-133b during zebrafish spinal cord regeneration and show upregulation of miR-133b expression in regenerating neurons of the brainstem after transection of the spinal cord. miR-133b has been shown to promote tissue regeneration in other tissue, but its ability to do so in the nervous system has yet to be tested. Inhibition of miR-133b expression by antisense morpholino (MO) application resulted in impaired locomotor recovery and reduced regeneration of axons from neurons in the nucleus of the medial longitudinal fascicle, superior reticular formation and intermediate reticular formation. miR-133b targets the small GTPase RhoA, which is an inhibitor of axonal growth, as well as other neurite outgrowth-related molecules. Our results indicate that miR-133b is an important determinant in spinal cord regeneration of adult zebrafish through reduction in RhoA protein levels by direct interaction with its mRNA. While RhoA has been studied as a therapeutic target in spinal cord injury, this is the first demonstration of endogenous regulation of RhoA by a microRNA that is required for spinal cord regeneration in zebrafish. The ability of miR-133b to suppress molecules that inhibit axon regrowth may underlie the capacity for adult zebrafish to recover locomotor function after spinal cord injury.
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Affiliation(s)
- Young-Mi Yu
- W. M. Keck Center for Collaborative Neuroscience and Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
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23
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Abstract
Embryonic stem cells and induced pluripotent stem cells are characterized by their ability to self-renew and differentiate into any cell type. The molecular mechanism behind this process is a complex interplay between the transcriptional factors with epigenetic regulators and signaling pathways. miRNAs are an integral part of this regulatory network, with essential roles in pluripotent maintenance, proliferation and differentiation. miRNAs are a class of small noncoding RNAs that target protein-encoding mRNA to inhibit translation and protein synthesis. Discovered close to 20 years ago, miRNAs have rapidly emerged as key regulatory molecules in several critical cellular processes across species. Recent studies have begun to clarify the specific role of miRNA in regulatory circuitries that control self-renewal and pluripotency of both embryonic stem cells and induced pluripotent stem cells. These advances suggest a critical role for miRNAs in the process of reprogramming somatic cells to pluripotent cells.
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Affiliation(s)
- Uma Lakshmipathy
- WM Keck Center for Collaborative Neuroscience, Rutgers University, Piscataway, NJ 08854, USA.
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24
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Goff LA, Davila J, Swerdel MR, Moore JC, Cohen RI, Wu H, Sun YE, Hart RP. Ago2 immunoprecipitation identifies predicted microRNAs in human embryonic stem cells and neural precursors. PLoS One 2009; 4:e7192. [PMID: 19784364 PMCID: PMC2745660 DOI: 10.1371/journal.pone.0007192] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2009] [Accepted: 08/30/2009] [Indexed: 12/28/2022] Open
Abstract
Background MicroRNAs are required for maintenance of pluripotency as well as differentiation, but since more microRNAs have been computationally predicted in genome than have been found, there are likely to be undiscovered microRNAs expressed early in stem cell differentiation. Methodology/Principal Findings SOLiD ultra-deep sequencing identified >107 unique small RNAs from human embryonic stem cells (hESC) and neural-restricted precursors that were fit to a model of microRNA biogenesis to computationally predict 818 new microRNA genes. These predicted genomic loci are associated with chromatin patterns of modified histones that are predictive of regulated gene expression. 146 of the predicted microRNAs were enriched in Ago2-containing complexes along with 609 known microRNAs, demonstrating association with a functional RISC complex. This Ago2 IP-selected subset was consistently expressed in four independent hESC lines and exhibited complex patterns of regulation over development similar to previously-known microRNAs, including pluripotency-specific expression in both hESC and iPS cells. More than 30% of the Ago2 IP-enriched predicted microRNAs are new members of existing families since they share seed sequences with known microRNAs. Conclusions/Significance Extending the classic definition of microRNAs, this large number of new microRNA genes, the majority of which are less conserved than their canonical counterparts, likely represent evolutionarily recent regulators of early differentiation. The enrichment in Ago2 containing complexes, the presence of chromatin marks indicative of regulated gene expression, and differential expression over development all support the identification of 146 new microRNAs active during early hESC differentiation.
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Affiliation(s)
- Loyal A. Goff
- Rutgers Stem Cell Research Center and the W.M. Keck Center for Collaborative Neuroscience, Rutgers University, Piscataway, New Jersey, United States of America
- Computer Science and Artificial Intelligence Laboratory and The Broad Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Jonathan Davila
- Rutgers Stem Cell Research Center and the W.M. Keck Center for Collaborative Neuroscience, Rutgers University, Piscataway, New Jersey, United States of America
| | - Mavis R. Swerdel
- Rutgers Stem Cell Research Center and the W.M. Keck Center for Collaborative Neuroscience, Rutgers University, Piscataway, New Jersey, United States of America
| | - Jennifer C. Moore
- Rutgers Stem Cell Research Center and the W.M. Keck Center for Collaborative Neuroscience, Rutgers University, Piscataway, New Jersey, United States of America
| | - Rick I. Cohen
- Rutgers Stem Cell Research Center and the W.M. Keck Center for Collaborative Neuroscience, Rutgers University, Piscataway, New Jersey, United States of America
| | - Hao Wu
- Departments of Molecular & Medical Pharmacology and Psychiatry & Behavioral Sciences, MRRC at UCLA Neuropsychiatric Institute, Los Angeles, California, United States of America
| | - Yi E. Sun
- Departments of Molecular & Medical Pharmacology and Psychiatry & Behavioral Sciences, MRRC at UCLA Neuropsychiatric Institute, Los Angeles, California, United States of America
| | - Ronald P. Hart
- Rutgers Stem Cell Research Center and the W.M. Keck Center for Collaborative Neuroscience, Rutgers University, Piscataway, New Jersey, United States of America
- * E-mail:
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25
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Li H, Han YR, Bi C, Davila J, Goff LA, Thompson K, Swerdel M, Camarillo C, Ricupero CL, Hart RP, Plummer MR, Grumet M. Functional differentiation of a clone resembling embryonic cortical interneuron progenitors. Dev Neurobiol 2009; 68:1549-64. [PMID: 18814314 DOI: 10.1002/dneu.20679] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We have generated clones (L2.3 and RG3.6) of neural progenitors with radial glial properties from rat E14.5 cortex that differentiate into astrocytes, neurons, and oligodendrocytes. Here, we describe a different clone (L2.2) that gives rise exclusively to neurons, but not to glia. Neuronal differentiation of L2.2 cells was inhibited by bone morphogenic protein 2 (BMP2) and enhanced by Sonic Hedgehog (SHH) similar to cortical interneuron progenitors. Compared with L2.3, differentiating L2.2 cells expressed significantly higher levels of mRNAs for glutamate decarboxylases (GADs), DLX transcription factors, calretinin, calbindin, neuropeptide Y (NPY), and somatostatin. Increased levels of DLX-2, GADs, and calretinin proteins were confirmed upon differentiation. L2.2 cells differentiated into neurons that fired action potentials in vitro, and their electrophysiological differentiation was accelerated and more complete when cocultured with developing astroglial cells but not with conditioned medium from these cells. The combined results suggest that clone L2.2 resembles GABAergic interneuron progenitors in the developing forebrain.
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Affiliation(s)
- Hedong Li
- W. M. Keck Center for Collaborative Neuroscience, Rutgers, State University of New Jersey, Piscataway, New Jersey 08854-8082, USA.
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26
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Villa-Cruz V, Davila J, Viana MT, Vazquez-Duhalt R. Effect of broccoli (Brassica oleracea) and its phytochemical sulforaphane in balanced diets on the detoxification enzymes levels of tilapia (Oreochromis niloticus) exposed to a carcinogenic and mutagenic pollutant. Chemosphere 2009; 74:1145-1151. [PMID: 19144376 DOI: 10.1016/j.chemosphere.2008.11.082] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Received: 09/20/2008] [Revised: 11/22/2008] [Accepted: 11/30/2008] [Indexed: 05/27/2023]
Abstract
Tilapia fish (Oreochromis niloticus) were fed with enriched diets containing broccoli and its phytochemical sulforaphane over 30 d. The levels of cytochrome P450, superoxide dismutase, catalase, lipid peroxidation and glutathione-S-transferase activities were measured. Basal value of cytochrome P450 activity was significantly increased as consequence of the broccoli and sulforaphane enriched diets, while no statistically significant changes were found on catalase and lipid peroxidation activities. After benzo(a)pyrene exposure, the cytochrome P450 activity increased to higher levels in the fish feed with broccoli and sulforaphane when compared with the control fish. Activities of antioxidant enzymes also varied but without significant difference with the control fish. Supported by the lower concentrations of BaP metabolites in bile from fish fed with broccoli or with sulforaphane enriched diets (indicating a better xenobiotic elimination) the cytochrome P450 induction could be considered beneficial for the detoxification because this transformation is the first step for PAH elimination by the phase II system. The protection of aquaculture organism against pollution effects by designing special diets able to modulate the enzymes involved in the phase-I and phase-II detoxification mechanism are discussed.
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Affiliation(s)
- V Villa-Cruz
- Centro de Investigación Científica y Educación Superior de Ensenada, CICESE, Ensenada BC, Mexico
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27
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Kinzy TG, De Stefano LA, Esposito AM, Hurley JM, Roy R, Valentin-Acevedo AJ, Chang KH, Davila J, Defren JM, Donovan J, Irizarry-Barreto P, Soto A, Ysla RM, Copeland HL, Copeland PR. A birth-to-death view of mRNA from the RNA recognition motif perspective. Biochem Mol Biol Educ 2008; 36:1-8. [PMID: 21591152 DOI: 10.1002/bmb.20149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
RNA binding proteins are a large and varied group of factors that are the driving force behind post-transcriptional gene regulation. By analogy with transcription factors, RNA binding proteins bind to various regions of the mRNAs that they regulate, usually upstream or downstream from the coding region, and modulate one of the five major processes in mRNA metabolism: splicing, polyadenylation, export, translation and decay. The most abundant RNA binding protein domain is called the RNA Recognition Motif (RRM)1. It is probably safe to say that an RRM-containing protein is making some contact with an mRNA throughout its existence. The transcriptional counterpart would likely be the histones, yet the multitude of specific functions that are results of RRM based interactions belies the universality of the motif. This complex and diverse application of a single protein motif was used as the basis to develop an advanced graduate level seminar course in RNA:protein interactions. The course, utilizing a learner-centered empowerment model, was developed to dissect each step in RNA metabolism from the perspective of an RRM containing protein. This provided a framework to discuss the development of specificity for the RRM for each required process.
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Affiliation(s)
- Terri Goss Kinzy
- UMDNJ Robert Wood Johnson Medical School Graduate School of Biomedical Sciences and Rutgers, The State University of New Jersey Joint Program in Molecular Biosciences, NJ; Department of Molecular Genetics, Microbiology and Immunology, UMDNJ Robert Wood Johnson Medical School, NJ
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28
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Goff LA, Davila J, Jörnsten R, Keles S, Hart RP. Bioinformatic analysis of neural stem cell differentiation. J Biomol Tech 2007; 18:205-212. [PMID: 17916793 PMCID: PMC2062565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Regulated mRnAs during differentiation of rat neural stem cells were analyzed using the ABi1700 microarray platform. This microarray, while technically advanced, suffers from the difficulty of integrating hybridization results into public databases for systems-level analysis. This is particularly true for the rat array, since many of the probes were designed for transcripts based on predicted human and mouse homologs. using several strategies, we increased the public annotation of the 27,531 probes from 43% to over 65%. To increase the dynamic range of annotation, probes were mapped to numerous public keys from several data sources. consensus annotation from multiple sources was determined for well-scoring alignments, and a confidence-based ranking system established for probes with less agreement across multiple data sources. previous attempts at genomic interpretation using the celera annotation model resulted in poor overlap with expected genomic sequences. since the public keys are more precisely mapped to the genome, we could now analyze the relationships between predicted transcription-factor binding sites and expression clusters. Results collected from a differentiation time course of two neural stem cell clones were clustered using a model-based algorithm. Transcription-factor binding sites were predicted from upstream regions of mapped transcripts using position weight matrices from either JAspAR or TRAnsFAc, and the resulting scores were used to discriminate between observed expression clusters. A classification and regression tree analysis was conducted using cluster numbers as gene identifiers and TFBs scores as predictors, pruning back to obtain a tree with the lowest gene class prediction error rate. Results identify several transcription factors, the presence or absence of which are sufficient to describe clusters of mRnAs changing over time-those that are static, as well as clusters describing cell line differences. public annotation of the AB1700 rat genome array will be valuable for integrating results into future systems-level analyses.
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Affiliation(s)
| | | | | | - Sunduz Keles
- Department of Statistics, University of Wisconsin, Madison, WI
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29
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Bignozzi CA, Roffia S, Chiorboli C, Davila J, Indelli MT, Scandola F. Oligomeric dicyanobis(polypyridine)ruthenium(II) complexes. Synthesis, spectroscopic, and photophysical properties. Inorg Chem 2002. [DOI: 10.1021/ic00323a014] [Citation(s) in RCA: 99] [Impact Index Per Article: 4.5] [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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30
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Abstract
The purpose of this paper is to report the use of total knee arthroplasty, a megaprosthesis, as a treatment in elderly patients who have a persistent nonunion of a supracondylar femur fracture. This case report includes two elderly patients who sustained supracondylar femur fractures that failed to unite with standard operative fixation methods. Despite multiple procedures during a long period, patients had a persistent nonunion. Both patients underwent total arthroplasty with a cemented kinematic rotating hinge and had significant clinical improvement. The Hospital for Special Surgery (HSS) knee scores increased from fifty-four points to seventy points in one patient and forty-two points to seventy-three points after surgery in the other patient. Both patients had excellent range of motion after surgery. A cemented megaprosthesis appears to be a viable treatment option for persistent nonunions of supracondylar femur fractures in elderly patients. It is well tolerated and permits early ambulation and return to activities of daily living.
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Affiliation(s)
- J Davila
- Department of Orthopaedic Surgery, University of Louisville School of Medicine, 550 South Jackson Street, ACB 3 Bridge, Louisville, KY 40202, U.S.A
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31
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Abstract
The hypothesis that attachment insecurity would be associated with remaining in an unhappy marriage was tested. One hundred seventy-two newly married couples participated in a 4-year longitudinal study with multiple assessment points. Hierarchical linear models revealed that compared with spouses in happy marriages and divorced spouses, spouses who were in stable but unhappy marriages showed the highest levels of insecurity initially and over time. Spouses in stable, unhappy marriages also had lower levels of marital satisfaction than divorced spouses and showed relatively high levels of depressive symptoms initially and over time. Results suggest that spouses at risk for stable, unhappy marriages can be identified early and may benefit from interventions that increase the security of spouses' attachment to each other.
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Affiliation(s)
- J Davila
- Department of Psychology, State University of New York at Buffalo, Park Hall, Buffalo, New York 14260-4110, USA.
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32
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Abstract
The authors examined 4 models of attachment change: a contextual model, a social-cognitive model, an individual-difference model, and a diathesis-stress model. Models were examined in a sample of newlyweds over the first 2 years of marriage, using growth curve analyses. Reciprocal processes, whereby attachment representations and interpersonal life circumstances affect one another over time, also were studied. On average, newlyweds became more secure over time. However, there was significant within-subject variability on attachment change that was predicted by intra- and interpersonal factors. Attachment representations changed in response to contextual, social-cognitive, and individual-difference factors. Reciprocal processes between attachment representations and marital variables emerged, suggesting that these factors influence one another in an ongoing way.
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Affiliation(s)
- J Davila
- Department of Psychology, State University of New York at Buffalo 14260-4110, USA.
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33
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Daley SE, Hammen C, Burge D, Davila J, Paley B, Lindberg N, Herzberg DS. Depression and Axis II symptomatology in an adolescent community sample: concurrent and longitudinal associations. J Pers Disord 1999; 13:47-59. [PMID: 10228926 DOI: 10.1521/pedi.1999.13.1.47] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The relationship between personality pathology and depression has been the focus of increasing attention, but few investigators have examined this issue prospectively or in adolescent community samples. The present study used both self report and interviewer assessments of personality disorder symptomatology and depression in a sample of 155 late adolescent women followed over three years. Personality pathology cluster and total scores demonstrated moderate to fairly high degrees of stability, indicating endurance of these traits in late adolescence. As predicted, Axis II symptoms were associated with concurrent depressive symptomatology. Overall, self-reported personality disorder symptoms, as well as those specifically in Clusters A and B, predicted interviewer-rated depression over two years beyond the contribution of initial depression, indicating that subclinical Axis II symptoms are a risk factor for subsequent depressive symptomatology.
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Affiliation(s)
- S E Daley
- Department of Psychology, University of California, Los Angeless 90095-1563, USA
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34
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Abstract
The authors examined 4 models of attachment change: a contextual model, a social-cognitive model, an individual-difference model, and a diathesis-stress model. Models were examined in a sample of newlyweds over the first 2 years of marriage, using growth curve analyses. Reciprocal processes, whereby attachment representations and interpersonal life circumstances affect one another over time, also were studied. On average, newlyweds became more secure over time. However, there was significant within-subject variability on attachment change that was predicted by intra- and interpersonal factors. Attachment representations changed in response to contextual, social-cognitive, and individual-difference factors. Reciprocal processes between attachment representations and marital variables emerged, suggesting that these factors influence one another in an ongoing way.
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Affiliation(s)
- J Davila
- Department of Psychology, State University of New York at Buffalo 14260-4110, USA.
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35
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Daley SE, Hammen C, Davila J, Burge D. Axis II symptomatology, depression, and life stress during the transition from adolescence to adulthood. J Consult Clin Psychol 1998. [PMID: 9735575 DOI: 10.1037//0022-006x.66.4.595] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study examined 2 models of the relationship between personality disorder symptomatology and depression, incorporating life stress as an intervening variable. In a community sample of late adolescent women, symptoms of Cluster B disorders predicted interpersonal chronic stress and self-generated episodic stress over 2 years, controlling for initial depression. Cluster A symptoms also predicted subsequent chronic interpersonal stress, over initial depression. Cluster C pathology did not predict subsequent stress. Personality disorder symptomatology was also associated with partner-reported relationship dissatisfaction. Support was found for a mediation model whereby women with higher levels of initial personality disturbance in Clusters A and B generated excessive amounts of episodic stress and interpersonal chronic stress in the next 2 years, which, in turn, increased vulnerability for depressive symptoms. A moderation model, whereby the presence of greater personality disorder symptoms would increase the likelihood of depression in response to stress, was not supported.
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Affiliation(s)
- S E Daley
- Department of Psychology, University of California, Los Angeles 90095-1563, USA
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36
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Daley SE, Hammen C, Davila J, Burge D. Axis II symptomatology, depression, and life stress during the transition from adolescence to adulthood. J Consult Clin Psychol 1998; 66:595-603. [PMID: 9735575 DOI: 10.1037/0022-006x.66.4.595] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.7] [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: 11/08/2022]
Abstract
This study examined 2 models of the relationship between personality disorder symptomatology and depression, incorporating life stress as an intervening variable. In a community sample of late adolescent women, symptoms of Cluster B disorders predicted interpersonal chronic stress and self-generated episodic stress over 2 years, controlling for initial depression. Cluster A symptoms also predicted subsequent chronic interpersonal stress, over initial depression. Cluster C pathology did not predict subsequent stress. Personality disorder symptomatology was also associated with partner-reported relationship dissatisfaction. Support was found for a mediation model whereby women with higher levels of initial personality disturbance in Clusters A and B generated excessive amounts of episodic stress and interpersonal chronic stress in the next 2 years, which, in turn, increased vulnerability for depressive symptoms. A moderation model, whereby the presence of greater personality disorder symptoms would increase the likelihood of depression in response to stress, was not supported.
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Affiliation(s)
- S E Daley
- Department of Psychology, University of California, Los Angeles 90095-1563, USA
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37
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Abstract
The present study applied C.L. Hammen's (1991) stress generation model to depressive symptoms in the context of marriage. The authors predicted that depressive symptoms would lead to increased marital stress, which would in turn lead to increased depressive symptoms. Social support processes were hypothesized to function as a mechanism by which dysphoric spouses generate stress. Hypotheses were tested in a sample of 154 newlywed couples. Depressive symptoms, marital stress, support perceptions, and support behavior (assessed using observational procedures) were assessed initially and 1 year later. Results provided evidence of marital stress generation among wives, and social support processes functioned as a mechanism of stress generation for wives. Results highlight the cyclical course of dysphoria and stress among wives.
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Affiliation(s)
- J Davila
- Department of Psychology, University of California, Los Angeles 90095-1563, USA.
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38
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Davila J, Bradbury TN, Cohan CL, Tochluk S. Marital functioning and depressive symptoms: evidence for a stress generation model. J Pers Soc Psychol 1997. [PMID: 9325596 DOI: 10.1037/0022–3514.73.4.849] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The present study applied C.L. Hammen's (1991) stress generation model to depressive symptoms in the context of marriage. The authors predicted that depressive symptoms would lead to increased marital stress, which would in turn lead to increased depressive symptoms. Social support processes were hypothesized to function as a mechanism by which dysphoric spouses generate stress. Hypotheses were tested in a sample of 154 newlywed couples. Depressive symptoms, marital stress, support perceptions, and support behavior (assessed using observational procedures) were assessed initially and 1 year later. Results provided evidence of marital stress generation among wives, and social support processes functioned as a mechanism of stress generation for wives. Results highlight the cyclical course of dysphoria and stress among wives.
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Affiliation(s)
- J Davila
- Department of Psychology, University of California, Los Angeles 90095-1563, USA.
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39
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Abstract
The present study applied C.L. Hammen's (1991) stress generation model to depressive symptoms in the context of marriage. The authors predicted that depressive symptoms would lead to increased marital stress, which would in turn lead to increased depressive symptoms. Social support processes were hypothesized to function as a mechanism by which dysphoric spouses generate stress. Hypotheses were tested in a sample of 154 newlywed couples. Depressive symptoms, marital stress, support perceptions, and support behavior (assessed using observational procedures) were assessed initially and 1 year later. Results provided evidence of marital stress generation among wives, and social support processes functioned as a mechanism of stress generation for wives. Results highlight the cyclical course of dysphoria and stress among wives.
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Affiliation(s)
- J Davila
- Department of Psychology, University of California, Los Angeles 90095-1563, USA.
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40
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Abstract
Adult attachment research has proceeded on the assumption that attachment style is relatively stable and affects future functioning. However, researchers have become interested in attachment instability and predictors of attachment style change. In this article, 2 conceptualizations of attachment style change were examined: Attachment style change is a reaction to current circumstances, and attachment style change is an individual difference in susceptibility to change that is associated with stable vulnerability factors. A total of 155 women were assessed after high school graduation, and 6 months and 2 years later. Results primarily supported the conceptualization of attachment style change as an individual difference. Specifically, some women may be prone to attachment fluctuations because of adverse earlier experiences, and women who show attachment fluctuations are similar to women with stably insecure attachments.
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Affiliation(s)
- J Davila
- Department of Psychology, University of California, Los Angeles 90095-1563, USA.
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41
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Daley SE, Hammen C, Burge D, Davila J, Paley B, Lindberg N, Herzberg DS. Predictors of the generation of episodic stress: a longitudinal study of late adolescent women. J Abnorm Psychol 1997. [PMID: 9131845 DOI: 10.1037//0021-843x.106.2.251] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The effects of depression and Axis I comorbidity on subsequent self-generated life stress were examined in a longitudinal sample of 134 late adolescent women. The results indicated that specific forms of psychopathology constitute a risk factor for future self-generated episodic stress, even when controlling for prior chronic stress. Comorbid depression had a particularly salient effect in the prediction of stress related to interpersonal conflicts. The effects of family psychopathology and sociotropy were mediated through participant psychiatric status, whereas autonomy made an independent contribution to the prediction of episodic stress. These results support C. Hammen's (1991b) stress generation model in a community sample, demonstrating how individuals with depression play a role in the creation of stress, and also refine prior work by showing that only the comorbid form of depression is associated with subsequent conflict-related stress.
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Affiliation(s)
- S E Daley
- Department of Psychology, University of California, Los Angeles 90095-1563, USA.
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42
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Daley SE, Hammen C, Burge D, Davila J, Paley B, Lindberg N, Herzberg DS. Predictors of the generation of episodic stress: a longitudinal study of late adolescent women. J Abnorm Psychol 1997; 106:251-9. [PMID: 9131845 DOI: 10.1037/0021-843x.106.2.251] [Citation(s) in RCA: 113] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The effects of depression and Axis I comorbidity on subsequent self-generated life stress were examined in a longitudinal sample of 134 late adolescent women. The results indicated that specific forms of psychopathology constitute a risk factor for future self-generated episodic stress, even when controlling for prior chronic stress. Comorbid depression had a particularly salient effect in the prediction of stress related to interpersonal conflicts. The effects of family psychopathology and sociotropy were mediated through participant psychiatric status, whereas autonomy made an independent contribution to the prediction of episodic stress. These results support C. Hammen's (1991b) stress generation model in a community sample, demonstrating how individuals with depression play a role in the creation of stress, and also refine prior work by showing that only the comorbid form of depression is associated with subsequent conflict-related stress.
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Affiliation(s)
- S E Daley
- Department of Psychology, University of California, Los Angeles 90095-1563, USA.
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43
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Burge D, Hammen C, Davila J, Daley SE, Paley B, Lindberg N, Herzberg D, Rudolph KD. The relationship between attachment cognitions and psychological adjustment in late adolescent women. Dev Psychopathol 1997; 9:151-67. [PMID: 9089129 DOI: 10.1017/s0954579497001119] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This longitudinal study of 137 female high school seniors investigated the relationship of attachment cognitions, current psychological functioning, and psychological functioning 12 months later. Attachment cognitions, assessed with the Revised Adult Attachment Scale and the Inventory of Parent and Peer Attachment, were significantly associated with current symptomatology. The Revised Adult Attachment Scale, in interaction with initial symptomatology, predicted depression, substance abuse, eating disorders, and personality disorders 12 months later. The Inventory of Parent and Peer Attachment parent subscales predicted eating disorder and personality disorder symptomatology, whereas the peer subscales predicted substance abuse, eating disorder, and personality disorder symptomatology.
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Affiliation(s)
- D Burge
- Department of Psychology, University of California at Los Angeles 90024, USA.
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44
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Davila J, Hammen C, Burge D, Paley B, Daley SE. Poor interpersonal problem solving as a mechanism of stress generation in depression among adolescent women. J Abnorm Psychol 1995; 104:592-600. [PMID: 8530761 DOI: 10.1037/0021-843x.104.4.592] [Citation(s) in RCA: 149] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The authors examined C. Hammen's (1991) model of stress generation in depression and the role of interpersonal problem-solving strategies (IPS) in the stress generation process in a longitudinal sample of 140 young women who entered the study at ages 17-18. Structural equation modeling was used to test a model in which IPS and subsequent interpersonal stress mediated the relationship between initial and later depressive symptoms. Results supported the main prediction of the stress generation model: Interpersonal stress mediated the relationship between initial and later depressive symptoms. In addition, IPS predicted interpersonal stress. However, no association was found between depressive symptoms and IPS. An alternative model in which IPS moderated the relationship between stress and depressive symptoms was tested; it was not supported.
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Affiliation(s)
- J Davila
- Department of Psychology, University of California, Los Angeles 90095, USA
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45
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Hammen CL, Burge D, Daley SE, Davila J, Paley B, Rudolph KD. Interpersonal attachment cognitions and prediction of symptomatic responses to interpersonal stress. J Abnorm Psychol 1995; 104:436-43. [PMID: 7673567] [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: 01/26/2023]
Abstract
The authors tested a cognitive-interpersonal hypothesis of depression by examining the role of interpersonal cognitions in the prediction of depression associated with interpersonal stressors. A measure of adult attachment assessed interpersonal cognitions about ability to be close to others and to depend on others and anxiety about rejection and abandonment. Participants were women who had recently graduated from high school; they were followed for 1 year with extensive interview evaluation of life events, depression, and other symptomatology. Generally, cognitions, interpersonal events, and their interactions contributed to the prediction of interview-assessed depressive symptoms, but the effects were not specific to depression and predicted general symptomatology measured by diagnostic interviews as well, and results also varied by attachment subscale. Results were discussed in terms of a developmental psychopathology approach to disorders in young women.
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Affiliation(s)
- C L Hammen
- Department of Psychology, University of California, Los Angeles 90095, USA
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46
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Hammen C, Davila J, Brown G, Ellicott A, Gitlin M. Psychiatric history and stress: predictors of severity of unipolar depression. J Abnorm Psychol 1992. [PMID: 1537972 DOI: 10.1037//0021-843x.101.1.45] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Unipolar depression is frequently a recurrent or chronic disorder. In studies on predicting its course, outcomes are typically linked to either psychiatric features or stressful life events. In order to integrate the 2 approaches, 51 unipolar patients were assessed periodically over at least 1 year for symptoms, stressful events, and chronic stressors. It was hypothesized that adverse family history and early age of onset impair role functioning and coping capabilities, thereby contributing to stressful circumstances that predict severity of depressive reactions. Results of causal modeling analyses supported a model in which background factors were associated with severity of depressive outcomes as mediated by their effects on stress variables. Such a model implicates the self-perpetuating nature of clinical depression, both for the individual and across generations.
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Affiliation(s)
- C Hammen
- University of California, Los Angeles 90024
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47
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Hammen C, Davila J, Brown G, Ellicott A, Gitlin M. Psychiatric history and stress: Predictors of severity of unipolar depression. Journal of Abnormal Psychology 1992; 101:45-52. [PMID: 1537972 DOI: 10.1037/0021-843x.101.1.45] [Citation(s) in RCA: 85] [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] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Unipolar depression is frequently a recurrent or chronic disorder. In studies on predicting its course, outcomes are typically linked to either psychiatric features or stressful life events. In order to integrate the 2 approaches, 51 unipolar patients were assessed periodically over at least 1 year for symptoms, stressful events, and chronic stressors. It was hypothesized that adverse family history and early age of onset impair role functioning and coping capabilities, thereby contributing to stressful circumstances that predict severity of depressive reactions. Results of causal modeling analyses supported a model in which background factors were associated with severity of depressive outcomes as mediated by their effects on stress variables. Such a model implicates the self-perpetuating nature of clinical depression, both for the individual and across generations.
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Affiliation(s)
- C Hammen
- University of California, Los Angeles 90024
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48
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Abstract
The photophysical properties of merocyanine 540 have been determined in methanol solution over a modest temperature range. Triplet state population is inefficient (the limiting triplet quantum yield being 0.25) due to rapid isomerization of the central double bond from the first excited singlet state. Activation energies have been measured for isomerization from the excited singlet state (20 kJ mol-1) and for conversion of the resultant cis-isomer back to the original trans-form (63 kJ mol-1), both processes involving formation of a twisted species. The dye is easily oxidized to give an unstable adduct which decomposes on the sub-ms timescale. Reversible redox chemistry occurs upon excitation in the presence of electron acceptors. These various observations are discussed in terms of the known chemotherapeutic activity of MC540 and it is concluded that the most probable mechanisms for cytotoxicity involve either local thermal disruption of cell membranes or in situ photogeneration of toxins derived from breakdown of the dye.
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Affiliation(s)
- J Davila
- Center for Fast Kinetics Research, University of Texas, Austin 78712
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49
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Mañas A, Extramiana J, Paniagua P, Mora M, González P, Pérez MJ, Pamplona M, Avila E, Davila J, García Castaño B. [In situ tumor excision of a renal neoplasm]. Actas Urol Esp 1990; 14:192-6. [PMID: 2239395] [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: 12/30/2022]
Abstract
The present work reviews the conservative surgical options to treat renal tumor formation in patients who still have both kidneys, and tries to clarify the diagnostic aspects, indications and therapeutical alternatives. The controversial items are analyzed versus treatments advocating a radical surgical approach, establishing a parallelism with current trends of surgical non-intervention in renal traumatism of moderate to severe condition (grade II). A case is presented where these two pathological circumstances are concurrent: Renal traumatism with complete parenchymatous rexhis and contralateral solid renal mass, both treated conservatively. Pre-surgical diagnosis was left renal traumatism grade II and righ renal neoformation and was based in findings with CAT and arteriographia. Histology of the piece from tumorectomy was renal angiomyolipoma. After a post-surgical evolution of twelve months, therapeutical results were assessed as excellent, with no evidence of either immediate not late complications. Considering data recently communicated by most authors, the concept of simple tumorectomy or renal tumoral enucleation is suggested as valid. However, arguments both clinical and surgical, in order to confirm its indication, require very rigorous criteria and a careful selection of patients.
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Affiliation(s)
- A Mañas
- Servicio de Urología y Radiología, Hospital de Móstoles, Madrid
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50
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Abstract
The photophysical properties of tetrakis(4-sulfonatophenyl)porphyrin (H2TSPP), its tin (IV) complex (SnTSPP), aluminium(III) trisulfonatophthalocyanine (AIPCS), and the corresponding zinc(II) complex (ZnPCS), have been measured in H2O, D2O, and upon binding to human serum albumin (HSA). The triplet excited states of the various macrocyclic dyes generate singlet molecular oxygen, O2(1 delta g) in high quantum yield upon illumination in O2-saturated solution, even in the presence of HSA. The triplet states also abstract an electron from 4-aminophenol, forming the radical anion of the macrocycle. Quenching rate constants and quantum yields have been measured for the various processes in the presence and absence of HSA. It is found that HSA binds all the dyes at nonspecific sites close to the interface in such a manner that the dyes remain accessible to species residing in the solution phase. Dyes that do not possess axial ligands complexed to the central cation (e.g. H2TSPP, ZnPCS) are able to bind also at a deeper, more specific site on the protein where they are protected from species in solution. Under such conditions, triplet quenching by 4-aminophenol is restricted to long-distance electron tunnelling, for which the rate is relatively slow.
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Affiliation(s)
- J Davila
- Center for Fast Kinetics Research, University of Texas, Austin 78712
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