1
|
Guo A, Ludvigsson J, Brantsæter AL, Klingberg S, Östensson M, Størdal K, Mårild K. Early-life diet and risk of inflammatory bowel disease: a pooled study in two Scandinavian birth cohorts. Gut 2024; 73:590-600. [PMID: 38290832 PMCID: PMC10958293 DOI: 10.1136/gutjnl-2023-330971] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 12/23/2023] [Indexed: 02/01/2024]
Abstract
OBJECTIVE We assessed whether early-life diet quality and food intake frequencies were associated with subsequent IBD. DESIGN Prospectively recorded 1-year and 3-year questionnaires in children from the All Babies in Southeast Sweden and The Norwegian Mother, Father and Child Cohort Study were used to assess diet quality using a Healthy Eating Index and intake frequency of food groups. IBD was defined as >2 diagnoses in national patient registers. Cox regression yielded HRs adjusted (aHRs) for child's sex, parental IBD, origin, education level and maternal comorbidities. Cohort-specific results were pooled using a random-effects model. RESULTS During 1 304 433 person-years of follow-up, we followed 81 280 participants from birth through childhood and adolescence, whereof 307 were diagnosed with IBD. Compared with low diet quality, medium and high diet quality at 1 year of age were associated with a reduced risk of IBD (pooled aHR 0.75 (95% CI=0.58 to 0.98) and 0.75 (95% CI=0.56 to 1.00)). The pooled aHR per increase of category was 0.86 (0.74 to 0.99). Pooled aHR for children 1 year old with high versus low fish intake was 0.70 (95% CI=0.49 to 1.00) for IBD, and showed association with reduced risk of UC (pooled aHR=0.46; 95% CI=0.21, 0.99). Higher vegetable intake at 1 year was associated with a risk reduction in IBD. Intake of sugar-sweetened beverages was associated with an increased risk of IBD. Diet quality at 3 years was not associated with IBD. CONCLUSION In this Scandinavian birth cohort, high diet quality and fish intake in early life were associated with a reduced risk of IBD.
Collapse
Affiliation(s)
- Annie Guo
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Johnny Ludvigsson
- Division of Pediatrics, Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Crown Princess Victoria Children's Hospital, Region Östergötland, Linköping, Sweden
| | | | - Sofia Klingberg
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Malin Östensson
- Bioinformatics and Data Centre, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Ketil Størdal
- Department of Pediatric Research, Faculty of Medicine, University of Oslo, Oslo, Norway
- Children's Center, Oslo University Hospital, Oslo, Norway
| | - Karl Mårild
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Pediatric Gastroenterology, Queen Silvia Children's Hospital, Gothenburg, Sweden
| |
Collapse
|
2
|
Das D, Thimjo J, Lebena A, Guo A, Enerbäck C, Ludvigsson J. Breast-feeding decreases the risk of developing psoriasis through early adulthood. Br J Dermatol 2024:ljae043. [PMID: 38305572 DOI: 10.1093/bjd/ljae043] [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: 10/17/2023] [Revised: 01/22/2024] [Accepted: 01/31/2024] [Indexed: 02/03/2024]
Abstract
BACKGROUND Psoriasis is a genetically determined systemic skin disease, although environmental trigger factors are required for disease manifestation. Some of these triggers, such as stress, infections, and drug exposure, have been identified. OBJECTIVE To explore the role of early nutrition as a risk factor for the development of psoriasis. METHODS Parents in the ABIS (All Babies in Southeast Sweden) (n= 16145) prospective birth cohort answered questionnaires at birth and by the child's age of 1 and 3 years. Diagnosis of psoriasis was received from the Swedish National Patient Register and National Drug Prescription Register. Statistical analyses were conducted using custom-written R scripts. RESULTS Individuals breastfed for less than 4 months and receiving infant formula before 4 months were associated with a higher risk of psoriasis (OR 1.84; p=0.018, and OR 1.88; p=0.015 respectively). At the 3-year follow-up, the increased consumption of fish, especially from the Baltic Sea, increased the risk of psoriasis (OR9.61; p=0.003). In addition, the risk of psoriasis increased following large milk consumption (OR2.53; p=0.040). CONCLUSION Our study underscores, for the first time, the impact of very early nutrition on the manifestation of psoriasis through early adulthood. Exclusive breastfeeding for 4 months seems protective.
Collapse
Affiliation(s)
- Debojyoti Das
- Division of Pediatrics, Department of Biomedical and Clinical Sciences, Linkoping University, SE-581 83 Linkoping, Sweden
| | - Joana Thimjo
- Ingrid Asp Psoriasis Research Centre, Department of Biomedical and Clinical Sciences, Linkoping University, SE-581 85 Linkoping, Sweden
| | - Andrea Lebena
- Division of Pediatrics, Department of Biomedical and Clinical Sciences, Linkoping University, SE-581 83 Linkoping, Sweden
| | - Annie Guo
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Charlotta Enerbäck
- Ingrid Asp Psoriasis Research Centre, Department of Biomedical and Clinical Sciences, Linkoping University, SE-581 85 Linkoping, Sweden
| | - Johnny Ludvigsson
- Crown Princess Victoria Children's Hospital and Div of Pediatrics, Dept of Biomedical and Clinical Sciences, Linköping University, SE-581 83 Linkoping, Sweden
| |
Collapse
|
3
|
Lerchova T, Östensson M, Sigvardsson I, Størdal K, Guo A, Mårild K, Ludvigsson J. Physical activity in childhood and later risk of inflammatory bowel disease: A Scandinavian birth cohort study. United European Gastroenterol J 2023; 11:874-883. [PMID: 37792586 PMCID: PMC10637124 DOI: 10.1002/ueg2.12469] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 08/29/2023] [Indexed: 10/06/2023] Open
Abstract
BACKGROUND AND OBJECTIVE Retrospective data have linked adult physical activity (PA) to reduced risk of inflammatory bowel disease (IBD). We aimed to prospectively examine the association of PA and screen time (ST) in childhood with later risk of IBD, for which data are scarce. METHODS Using two population-based birth cohorts (All Babies in Southeast Sweden [ABIS] and Norwegian Mother, Father, and Child Cohort Study [MoBa]), we retrieved parent-reported data on PA and ST degree at ages 3 and 8 years. Data were modelled as binary (high vs. low) and numerical (hours/day) exposures. Inflammatory bowel disease was defined as ≥2 diagnostic records in national health registers. Cox regression estimated hazard ratios adjusted for potential confounding from parental IBD, country of origin, education, and smoking habits (Adjusted hazard ratio (aHR)). Our 8-year analyses included a 2-year lag period to reduce the risk of reverse causation. Cohort-specific estimates were pooled using random-effects model. RESULT Among 65,978 participants from ABIS (n = 8810) and MoBa (n = 57,168) with available data, 266 developed IBD. At 3 years, children with high versus low PA had an aHR of 1.12 for IBD (95%CI = 0.87-1.43); high versus low ST showed an aHR of 0.91 (95%CI = 0.71-1.17). Conversely, at 8 years, high versus low ST was associated with increased risk of later IBD (aHR = 1.51; 95%CI = 1.02-2.25), but PA at 8 years, was not linked to IBD (aHR = 1.19; 95%CI = 0.80-1.76). Subtype-specific analyses for Crohn's disease and ulcerative colitis did not differ appreciably. CONCLUSION Acknowledging possible confounding variables, children with high versus low ST at 8 years were at increased risk of IBD. In contrast, PA degree was not linked to IBD at any age category.
Collapse
Affiliation(s)
- Tereza Lerchova
- Department of PaediatricsInstitute of Clinical SciencesSahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Malin Östensson
- Bioinformatics and Data CentreSahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Ida Sigvardsson
- Department of PaediatricsInstitute of Clinical SciencesSahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Ketil Størdal
- Department of Paediatric ResearchFaculty of MedicineUniversity of OsloOsloNorway
- Children's CenterOslo University HospitalOsloNorway
| | - Annie Guo
- Department of PaediatricsInstitute of Clinical SciencesSahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Karl Mårild
- Department of PaediatricsInstitute of Clinical SciencesSahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Paediatric Gastroenterology UnitQueen Silvia Children's HospitalSahlgrenska University HospitalGothenburgSweden
| | - Johnny Ludvigsson
- Crown Princess Victoria Children's HospitalRegion ÖstergötlandLinköpingSweden
- Division of PaediatricsDepartment of Biomedical and Clinical SciencesLinköping UniversityLinköpingSweden
| |
Collapse
|
4
|
Guo A, Östensson M, Størdal K, Ludvigsson J, Mårild K. Early-Life Hygiene-Related Factors and Risk of Inflammatory Bowel Disease: A Scandinavian Birth Cohort Study. Inflamm Bowel Dis 2023:izad257. [PMID: 37921331 DOI: 10.1093/ibd/izad257] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Indexed: 11/04/2023]
Abstract
BACKGROUND We aimed to investigate whether early-life hygiene-related factors influenced the risk of inflammatory bowel disease (IBD) in a Scandinavian population and test the association's consistency across cohorts. METHODS This study followed 117 493 participants in the All Babies in Southeast Sweden study and the Norwegian Mother, Father, and Child Cohort Study. IBD diagnoses were defined by national registers. Comprehensive data on hygiene-related exposures, such as having pets, rural living, daycare attendance, and siblings, were retrieved from questionnaires administered from pregnancy until child's age of 36 months. A multivariable Cox regression model yielded adjusted hazard ratios (aHRs) for IBD accounting for socioeconomic status and perinatal factors. Cohort-specific estimates were pooled using a random-effects model. RESULTS In over 2 024 299 person-years of follow-up 451 participants developed IBD. In pooled estimates children attending daycare up to 36 months of life vs not attending daycare were less likely to develop Crohn's disease (aHR, 0.60; 95% confidence interval [CI], 0.37- 0.98). Children having 1 or more siblings had a modestly increased risk of IBD (aHR, 1.17; 95% CI, 0.96-1.42; aHR for each sibling, 1.12; 95% CI, 1.01-1.24). The other hygiene factors were not significantly linked to later IBD. In the Norwegian Mother, Father, and Child Cohort Study cohort, bed sharing was associated with an increased risk of IBD, most notably for ulcerative colitis (aHR, 1.67; 95% CI, 1.01-2.78). CONCLUSIONS In this birth cohort study from 2 high-income Scandinavian countries, some early-life hygiene-related exposures were associated with IBD risk. The generalizability of these results to countries of other socioeconomic level is unknown.
Collapse
Affiliation(s)
- Annie Guo
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Malin Östensson
- Bioinformatics and Data Centre, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Ketil Størdal
- Department of Pediatric Research, Faculty of Medicine, University of Oslo, Oslo, Norway
- Children's Center, Oslo University Hospital, Oslo, Norway
| | - Johnny Ludvigsson
- Crown Princess Victoria Children's Hospital and Div of Pediatrics, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Division of Pediatrics, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Karl Mårild
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Pediatrics, Queen Silvia Children's Hospital, Gothenburg, Sweden
| |
Collapse
|
5
|
Valle L, Guo A, Ahmed S, Rowe K, Pritchard C, Montgomery B, Garraway I, Nickols NG, Maxwell K, Kelley M, Rettig M. Success of Liquid Tumor Biopsy in Men with Metastatic Prostate Cancer According to Self-Identified Race. Int J Radiat Oncol Biol Phys 2023; 117:e446-e447. [PMID: 37785441 DOI: 10.1016/j.ijrobp.2023.06.1628] [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] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Liquid biopsy using cell-free DNA (cfDNA) is increasingly used to identify somatic prostate cancer (PrCa) alterations when tissue biopsy of a metastatic lesion is infeasible or impractical. High-risk somatic alterations identified by cfDNA have been recently shown to predict the benefit of metastasis-directed therapy with stereotactic body radiation therapy in PrCa. However, given the older age of PrCa patients, liquid biopsy is often contaminated with alterations related to clonal hematopoiesis of indeterminate potential (CHIP), generating uncertainty in the clinical utility of the results. Given the higher incidence and aggressiveness of metastatic PrCa in Black men, we sought to determine if the success of cfDNA testing varied by race in a large and diverse cohort of United States Veterans with metastatic PrCa, hypothesizing that race would not influence the success of cfDNA testing. MATERIALS/METHODS Veterans with metastatic PrCa underwent next-generation sequencing of cfDNA biopsy specimens through the VA National Precision Oncology Program from February 2019 to November 2022. Successful identification of PrCa with cfDNA testing was defined as the identification of an alteration in one or more PrCa-related related genes in the gene panel tested (AR, CDK12, SPOP, MED12, CCND1, BRAF, AKT1, TMPRSS2, ERG, ETV1, and ETV4). Univariate logistic regression was employed to explore the association between patient self-identified race, as well as other patient and disease-specific factors at the time of cfDNA biopsy, with the likelihood of yielding a successful cfDNA biopsy result. RESULTS A total of 2066 cfDNA tests from 1985 Veterans were related to a diagnosis of PrCa, passed quality control measures, and were linkable to patient-level demographics. Median age at testing was 74, median PSA at testing was 22.7, median PSA doubling time (PSADT) was 3.6 months, and median Gleason score was 8. 57% of Veterans self-identified as White, 33% as Black, and 10% as Other. Eight hundred fourteen (39%) tests were deemed successful by finding a PrCa related gene alteration. Among successful tests, the most frequently encountered alterations were AR alterations in 60.4% White men and 33.9% Black men (p = 0.72), followed by TMPRSS2 alterations in 70.3% White men and 22.0% Black men (p<0.001). Despite a lower rate of PrCa-specific alterations in Black men, on univariate analysis, Veteran self-identified race was not associated with successful cfDNA testing (OR 0.95, 95% CI 0.78-1.14, p = 0.6), whereas PSA in quintiles 2-4, PSADT <12 months, and unit increase in Gleason score were associated with successful cfDNA testing (p<0.01 for all). CONCLUSION Successful cfDNA biopsy in metastatic PrCa is associated with PSA and PSADT, but not related to patient self-identified race. In appropriate clinical scenarios, patients who self-identify as Black or White are equally likely to have PrCa-specific alterations detected on cfDNA testing when evaluating metastatic PrCa patients for local and systemic therapies.
Collapse
Affiliation(s)
- L Valle
- Department of Radiation Oncology, University of California, Los Angeles, Los Angeles, CA
| | - A Guo
- Department of Veterans Affairs, Minneapolis, MN
| | - S Ahmed
- Northwestern University, Chicago, IL
| | - K Rowe
- Department of Veterans Affairs, Salt Lake City, UT
| | | | - B Montgomery
- University of Washington, Seattle, WA, United States
| | - I Garraway
- Department of Urology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - N G Nickols
- University of California Los Angeles, Department of Radiation Oncology, Los Angeles, CA
| | - K Maxwell
- University of Pennsylvania, Philadelphia, PA
| | | | - M Rettig
- Department of Medical Oncology, University of California, Los Angeles, Los Angeles, CA
| |
Collapse
|
6
|
Sigvardsson I, Størdal K, Östensson M, Guo A, Ludvigsson J, Mårild K. Childhood Socioeconomic Characteristics and Risk of Inflammatory Bowel Disease: A Scandinavian Birth Cohort Study. Inflamm Bowel Dis 2023:izad220. [PMID: 37740494 DOI: 10.1093/ibd/izad220] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Indexed: 09/24/2023]
Abstract
BACKGROUND Ecological observations suggest a negative relationship between childhood socioeconomic status (SES) and inflammatory bowel disease (IBD) risk. Individual-level analyses have been inconsistent and mostly lacked refined assessments of SES. We aimed to comprehensively study the association between early-life SES and later IBD. METHODS This study included 117 493 participants from the Norwegian Mother, Father and Child cohort and Swedish All Babies in Southeast Sweden cohorts. Participants were followed from birth (1997-2009) through 2021. IBD was identified through national patient registers. Questionnaire and register data were used to define parental educational level, employment, and household income level. Cox regression estimated adjusted hazard ratios (aHRs), accounting for other SES exposures and covariates (eg, parental IBD). Cohort-specific estimates were pooled using a random-effects model. RESULTS During 2 024 299 person-years of follow-up, 451 participants were diagnosed with IBD (All Babies in Southeast Sweden cohort, n = 113 and Norwegian Mother, Father and Child cohort, n = 338). Early-life maternal, but not paternal, educational level was associated with later IBD (low vs high educational level; pooled aHR, 1.81; 95% confidence interval [CI], 1.16-2.82; and pooled aHR, 1.20; 95% CI, 0.80-1.80; respectively). Having a nonworking mother or father was not significantly associated with IBD (pooled aHR, 0.69; 95% CI, 0.47-1.02; pooled aHR, 0.79; 95% CI, 0.45-1.37). High vs low household income level yielded a pooled aHR of 1.33 (95% CI, 0.94-1.89). Overall, results were largely consistent across cohorts. CONCLUSIONS In this prospective Scandinavian cohort study, low maternal educational level was, independent of other SES and covariates, significantly associated with later IBD in her child. Further research is needed to elucidate factors that may mediate this relationship.
Collapse
Affiliation(s)
- Ida Sigvardsson
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg, Sweden
| | - Ketil Størdal
- Department of Pediatric Research, Faculty of Medicine, University of Oslo, Oslo, Norway
- Children's Center, Oslo University Hospital, Oslo, Norway
| | - Malin Östensson
- Bioinformatics and Data Centre, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Annie Guo
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg, Sweden
| | - Johnny Ludvigsson
- Crown Princess Victoria Children's Hospital, Region Östergötland, Linköping, Sweden
- Division of Pediatrics, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Karl Mårild
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg, Sweden
- Department of Pediatrics, Queen Silvia Children's Hospital, Gothenburg, Sweden
| |
Collapse
|
7
|
Xie Z, Wang L, Chen J, Zheng Z, Srinual S, Guo A, Sun R, Hu M. Reduction of systemic exposure and side effects by intra-articular injection of anti-inflammatory agents for osteoarthritis: what is the safer strategy? J Drug Target 2023; 31:596-611. [PMID: 37249274 DOI: 10.1080/1061186x.2023.2220083] [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] [Received: 01/06/2023] [Revised: 03/03/2023] [Accepted: 04/05/2023] [Indexed: 05/31/2023]
Abstract
Osteoarthritis (OA) is a chronic degenerative joint disease associated with pain, inflammation, and cartilage degradation. However, no current treatment can effectively halt the progression of the disease. Therefore, the use of NSAIDs and intra-articular corticosteroids is usually recommended as the primary treatment for OA-associated pain and inflammation. However, there is accumulating evidence that the long-term use of oral NSAIDs and intra-articular corticosteroids can lead to a myriad of negative side effects. Although numerous efforts have been made to develop intra-articular formulations for NSAIDs, the systemic exposure of intra-articular injection of NSAIDs and its potential side effects have not been explicitly investigated. To ascertain the evident and potential side effects of intra-articular injection of anti-inflammatory agents, we have summarised in this review the systemic exposure, local side effects, and systemic side effects of intra-articular injections of anti-inflammatory agents, including NSAIDs and corticosteroids. For developing a safer treatment to fulfil the unmet long-term use needs of patients, a new therapy, which combines the locally active drug and a sustained-release formulation, has been proposed in this review.
Collapse
Affiliation(s)
- Zuoxu Xie
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
- Drug Metabolism and Pharmacokinetics, Biogen, Cambridge, MA, USA
| | - Lu Wang
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Jie Chen
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Zicong Zheng
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Songpol Srinual
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Annie Guo
- Drug Metabolism and Pharmacokinetics, Biogen, Cambridge, MA, USA
| | - Rongjin Sun
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Ming Hu
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| |
Collapse
|
8
|
Östensson M, Björkqvist O, Guo A, Størdal K, Halfvarson J, Mårild K, Ludvigsson J. Epidemiology, validation, and clinical characteristics of inflammatory bowel disease: the ABIS birth cohort study. BMC Gastroenterol 2023; 23:199. [PMID: 37291531 DOI: 10.1186/s12876-023-02840-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 05/31/2023] [Indexed: 06/10/2023] Open
Abstract
BACKGROUND Birth cohort studies with linked register-based data on inflammatory bowel disease (IBD) provide opportunities to prospectively study early-life determinants of the disease. However, register-based data often lack information on clinical characteristics and rely on diagnostic algorithms. Within the All Babies in Southeast Sweden (ABIS) cohort, we examined the validity of a register-based definition of IBD, its incidence, and clinical and therapeutic characteristics at diagnosis. METHODS We followed 16,223 children from birth (1997-1999) until the end of 2020 for the diagnosis of IBD as defined by a minimum of two diagnostic codes for IBD in the Swedish National Patient Register (NPR). We described the incidence and cumulative incidence of IBD. Through a medical record review of cases diagnosed by the end of 2017, we examined the positive predictive value (PPV) for IBD and described its clinical characteristics and treatment. RESULTS By 2020, at an average age of 22.2 years, 113 participants (0.74%, 95% confidence interval [CI] = 0.61-0.89) had a register-based diagnosis of IBD, corresponding to an incidence of 31.3 per 100,000 person-years of follow-up; the incidence for Crohn's disease (CD) was 11.1 per 100,000 person-years and 15.8 for ulcerative colitis (UC). Of 77 participants with a register-based definition of IBD by the end of 2017, medical records were identified for 61 participants, of whom 57 had true IBD (PPV = 93%; 95%CI = 0.87-1.00). While oral 5-aminosalicylic acid treatment was equally common in newly diagnosed CD and UC patients, biologics were more often used for newly diagnosed CD. The median faecal calprotectin levels were 1206 mg/kg at diagnosis and 93 mg/kg at the last follow-up (P < 0.001). CONCLUSIONS In this population-based sample of Swedish children and young adults the cumulative IBD incidence was 0.74. The validity of register-based definition of IBD was high and supports using such data to identify IBD patients in cohort studies.
Collapse
Affiliation(s)
- Malin Östensson
- Bioinformatics and Data Centre, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Olle Björkqvist
- Department of Laboratory Medicine, Clinical Microbiology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Annie Guo
- Department of Paediatrics, Institute of Clinical Science, University of Gothenburg, Gothenburg, Sweden
| | - Ketil Størdal
- Department of Paediatric Research, Faculty of Medicine, University of Oslo, Oslo, Norway
- Children's Centre, Oslo University Hospital, Oslo, Norway
| | - Jonas Halfvarson
- Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Karl Mårild
- Department of Paediatrics, Institute of Clinical Science, University of Gothenburg, Gothenburg, Sweden.
- Department of Paediatrics, Queen Silvia Children's Hospital, 416 78, Gothenburg, Sweden.
| | - Johnny Ludvigsson
- Crown Princess Victoria Children's Hospital, Region Östergötland, Linköping, Sweden
- Department of Biomedical and Clinical Sciences, Division of Paediatrics, Linköping University, Linköping, Sweden
| |
Collapse
|
9
|
Zhang C, Feng Y, Balutowski A, Miner GE, Rivera-Kohr DA, Hrabak MR, Sullivan KD, Guo A, Calderin JD, Fratti RA. The interdependent transport of yeast vacuole Ca 2+ and H + and the role of phosphatidylinositol 3,5-bisphosphate. J Biol Chem 2022; 298:102672. [PMID: 36334632 PMCID: PMC9706634 DOI: 10.1016/j.jbc.2022.102672] [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: 09/27/2022] [Revised: 10/30/2022] [Accepted: 10/31/2022] [Indexed: 11/27/2022] Open
Abstract
Yeast vacuoles are acidified by the v-type H+-ATPase (V-ATPase) that is comprised of the membrane embedded VO complex and the soluble cytoplasmic V1 complex. The assembly of the V1-VO holoenzyme on the vacuole is stabilized in part through interactions between the VO a-subunit ortholog Vph1 and the lipid phosphatidylinositol 3,5-bisphosphate (PI(3,5)P2). PI(3,5)P2 also affects vacuolar Ca2+ release through the channel Yvc1 and uptake through the Ca2+ pump Pmc1. Here, we asked if H+ and Ca2+ transport activities were connected through PI(3,5)P2. We found that overproduction of PI(3,5)P2 by the hyperactive fab1T2250A mutant augmented vacuole acidification, whereas the kinase-inactive fab1EEE mutant attenuated the formation of a H+ gradient. Separately, we tested the effects of excess Ca2+ on vacuole acidification. Adding micromolar Ca2+ blocked vacuole acidification, whereas chelating Ca2+ accelerated acidification. The effect of adding Ca2+ on acidification was eliminated when the Ca2+/H+ antiporter Vcx1 was absent, indicating that the vacuolar H+ gradient can collapse during Ca2+ stress through Vcx1 activity. This, however, was independent of PI(3,5)P2, suggesting that PI(3,5)P2 plays a role in submicromolar Ca2+ flux but not under Ca2+ shock. To see if the link between Ca2+ and H+ transport was bidirectional, we examined Ca2+ transport when vacuole acidification was inhibited. We found that Ca2+ transport was inhibited by halting V-ATPase activity with Bafilomycin or neutralizing vacuolar pH with chloroquine. Together, these data show that Ca2+ transport and V-ATPase efficacy are connected but not necessarily through PI(3,5)P2.
Collapse
Affiliation(s)
- Chi Zhang
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - Yilin Feng
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - Adam Balutowski
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - Gregory E Miner
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - David A Rivera-Kohr
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - Michael R Hrabak
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - Katherine D Sullivan
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - Annie Guo
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - Jorge D Calderin
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - Rutilio A Fratti
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, Illinois, USA; Center for Biophysics & Quantitative Biology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA.
| |
Collapse
|
10
|
Zhou G, Zhao MW, Cao YP, Lin JH, Wang WG, Guo A, Tian H. [A multicenter cross-sectional study of quality of life and nonsurgical treatment in patients with knee osteoarthritis]. Zhonghua Yi Xue Za Zhi 2022; 102:2799-2805. [PMID: 36124353 DOI: 10.3760/cma.j.cn112137-20220406-00719] [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: 06/15/2023]
Abstract
Objective: To explore the influencing factors of health-related quality of life (HRQoL) in patients with knee osteoarthritis, and to analyze the non-surgical treatment of knee osteoarthritis. Methods: Demographic variables, treatment modalities, imaging data, and 12-item short form health survey (SF-12) scores of patients with knee osteoarthritis in orthopedic outpatient departments of five hospitals in Beijing from December 2017 to November 2018 were collected to analyze influencing factors of HRQoL and non-surgical treatment. Results: A total of 2 034 patients were included. There were 530 males (26.1%) and 1 504 females (73.9%), with a mean age of (59.17±10.22) years. In terms of physical quality of life, female patients with knee osteoarthritis had lower physical components summary (PCS) compared with male patients (β=-0.521, P=0.036); patients aged ≥64 years had lower PCS than those aged<55 years (β=-0.636, P=0.026). Patients with an education of more than 12 years had higher PCS than those with less than 10 years (β=1.063, P<0.001). Compared to patients with mild clinical symptoms, the PCS of patients with moderate clinical symptoms was lower (β=-0.860, P=0.002), while the PCS of those with severe clinical symptoms was much lower (β=-1.126, P<0.001). Patients treated with combination therapy had higher PCS than untreated patients (β=0.731, P=0.005). In terms of mental quality of life, compared to patients engaged in sedentary work, the mental components summary (MCS) of patients engaged in mild manual labor jobs was lower (β=-0.712, P=0.015); Compared to patients with a Charson comorbidity index of 0, patients with a Charlson comorbidity index ≥ 2 had lower MCS (β=-1.183, P=0.007). In the past 12 months, 648 (31.9%), 143 (7.0%), 406 (20.0%), 680 (33.4%), 343 (16.9%), 681 (33.5%), 170 (8.4%) patients had used non-steroid anti-inflammatory drugs (NSAIDs), acetaminophen, glucosamine/chondroitin formulations, physical therapy, articular cavity puncture injection, traditional Chinese medicine treatment and exercise therapy, respectively. Total of 451 patients (22.2%) received monotherapy and 889 patients (43.7%) received combination therapy. Conclusions: The major non-surgical treatment methods for patients with knee osteoarthritis in Beijing are NSAIDs, physiotherapy and traditional Chinese medicine. Combination therapy is used more frequently than monotherapy. Physical quality of life is related to gender, age, education, severity of symptoms and treatment, while mental quality of life is related to occupational labor and comorbidities.
Collapse
Affiliation(s)
- G Zhou
- Department of orthopedics, Peking University Third Hospital, Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing 100191, China
| | - M W Zhao
- Department of orthopedics, Peking University Third Hospital, Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing 100191, China
| | - Y P Cao
- Department of Orthopedics, Peking University First Hospital, Beijing 100034, China
| | - J H Lin
- Department of Orthopedics, Peking University People's Hospital, Beijing 100044, China
| | - W G Wang
- Department of Orthopedics, China-Japan Friendship Hospital, Beijing 100029, China
| | - A Guo
- Department of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - H Tian
- Department of orthopedics, Peking University Third Hospital, Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing 100191, China
| |
Collapse
|
11
|
Guo A, Asztely F, Smits A, Jakola AS. Methodological Approaches to Ketogenic Dietary Treatments in Glioma Patients from a Nutritional Point of View. Nutr Cancer 2022; 75:112-122. [PMID: 35959770 DOI: 10.1080/01635581.2022.2108073] [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] [Indexed: 12/15/2022]
Abstract
Ketogenic diets (KD) have received increasing interest in neuro-oncology based on their ability to inhibit glioma growth In Vitro and their established role in medically refractory seizures. This review analyses the methodological aspects of KD treatment alongside standard care for patients with gliomas from a nutritional point of view. A literature search was performed in March 2022 searching PubMed and Scopus. We identified 13 articles including 187 patients with a histological-new or recurrent-diagnosis of glioma and treated by KD during the course of the disease. Dietary treatments were categorized as the classical ketogenic diet (CKD), the Modified Atkins diet (MAD), and the medium-chain triglyceride (MCT) diet. We identified a large variation in dietary characteristics regarding restriction of carbohydrates, ketogenic ratio, and additional dietary support. This striking heterogenicity in the methodological approaches of KD treatments made it problematic to compare effects between the included studies. Therefore, a standardized definition of KD for patients with glioma and a consensus on methodological implementation is needed. It would also be desirable to further investigate to what extent KD treatment can be optimized to secure optimal nutrient status and patient satisfaction.
Collapse
Affiliation(s)
- Annie Guo
- Institute of Neuroscience and Physiology, Department of Clinical Neuroscience, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Fredrik Asztely
- Institute of Neuroscience and Physiology, Department of Clinical Neuroscience, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Anja Smits
- Institute of Neuroscience and Physiology, Department of Clinical Neuroscience, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Institute of Medicine, Neurology, Uppsala University Hospital, Uppsala, Sweden
| | - Asgeir S Jakola
- Institute of Neuroscience and Physiology, Department of Clinical Neuroscience, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Neurosurgery, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Neurosurgery, St. Olavs University Hospital, Trondheim, Norway
| |
Collapse
|
12
|
Guo A, Wide U, Arvidsson L, Eiben G, Hakeberg M. Dietary intake and meal patterns among young adults with high caries activity: a cross-sectional study. BMC Oral Health 2022; 22:190. [PMID: 35590301 PMCID: PMC9118703 DOI: 10.1186/s12903-022-02227-w] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 05/06/2022] [Indexed: 11/16/2022] Open
Abstract
Background Dental caries is a multifactorial disease that is highly dependent on diet, where a lower consumption and intake frequency of sugar would be favorable. The aims were (i) to examine dietary intake and meal patterns, more specifically sugar intake and foods high in sugar, among young adults with high caries activity, and (ii) to investigate the association between dietary and meal patterns consumption, and level of caries activity. Methods This study presents baseline data from an ongoing randomized controlled trial. A total of 50 young adults (aged 23.0 ± 3.0 years) with ≥ 2 decayed tooth surfaces were included. Dietary intake was captured with a 59-item food frequency questionnaire (FFQ) and a three-day food diary. Adherence to dietary guidelines was analyzed by comparing the dietary intake to the Nordic Nutritional Recommendations (NNR) 2012 and by using the Healthy Dietary Adherence score (HDAS). Participants were categorized into two groups: (i) the Caries group with 2–4 decayed surfaces, and (ii) the High caries group with ≥ 5 decayed surfaces. Results The High caries group reported a statistically significantly higher snack and total meal intake compared to the Caries group, as well as a sugar intake exceeding the Nordic nutritional recommendations. The majority of the participants reported a high intake frequency (> 2.5/day) of sweet foods and drinks and less than one intake of fruit and vegetables, respectively, per day. Similar results were found when analyzing adherence by using the HDAS, where the lowest adherence according to dietary guidelines was shown for the food groups of sugar, whole meal products, and fruit and vegetables. Conclusion The results indicated a high intake of sugar and low intake of fruit, vegetables, and fiber in high caries-active individuals.
Collapse
Affiliation(s)
- Annie Guo
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg, Sweden
| | - Ulla Wide
- Department of Behavioral and Community Dentistry, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, P.O. Box 450, 40530, Gothenburg, Sweden. .,Public Dental Service, Region Västra Götaland, Sweden.
| | - Louise Arvidsson
- Department of Public Health, School of Health Sciences, University of Skövde, Skövde, Sweden
| | - Gabriele Eiben
- Department of Public Health, School of Health Sciences, University of Skövde, Skövde, Sweden
| | - Magnus Hakeberg
- Department of Behavioral and Community Dentistry, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, P.O. Box 450, 40530, Gothenburg, Sweden.,Public Dental Service, Region Västra Götaland, Sweden
| |
Collapse
|
13
|
Mason E, Mhaskar H, Guo A. A manifold learning approach for gesture recognition from micro-Doppler radar measurements. Neural Netw 2022; 152:353-369. [DOI: 10.1016/j.neunet.2022.04.024] [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] [Received: 10/04/2021] [Revised: 04/21/2022] [Accepted: 04/21/2022] [Indexed: 11/25/2022]
|
14
|
Miner GE, Sullivan KD, Zhang C, Rivera-Kohr D, Guo A, Hurst LR, Ellis EC, Starr ML, Jones BC, Fratti RA. Phosphatidylinositol 3,5-bisphosphate regulates Ca 2+ transport during yeast vacuolar fusion through the Ca 2+ ATPase Pmc1. Traffic 2021; 21:503-517. [PMID: 32388897 DOI: 10.1111/tra.12736] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 05/04/2020] [Accepted: 05/06/2020] [Indexed: 01/02/2023]
Abstract
The transport of Ca2+ across membranes precedes the fusion and fission of various lipid bilayers. Yeast vacuoles under hyperosmotic stress become fragmented through fission events that requires the release of Ca2+ stores through the TRP channel Yvc1. This requires the phosphorylation of phosphatidylinositol-3-phosphate (PI3P) by the PI3P-5-kinase Fab1 to produce transient PI(3,5)P2 pools. Ca2+ is also released during vacuole fusion upon trans-SNARE complex assembly, however, its role remains unclear. The effect of PI(3,5)P2 on Ca2+ flux during fusion was independent of Yvc1. Here, we show that while low levels of PI(3,5)P2 were required for Ca2+ uptake into the vacuole, increased concentrations abolished Ca2+ efflux. This was as shown by the addition of exogenous dioctanoyl PI(3,5)P2 or increased endogenous production of by the hyperactive fab1T2250A mutant. In contrast, the lack of PI(3,5)P2 on vacuoles from the kinase dead fab1EEE mutant showed delayed and decreased Ca2+ uptake. The effects of PI(3,5)P2 were linked to the Ca2+ pump Pmc1, as its deletion rendered vacuoles resistant to the effects of excess PI(3,5)P2 . Experiments with Verapamil inhibited Ca2+ uptake when added at the start of the assay, while adding it after Ca2+ had been taken up resulted in the rapid expulsion of Ca2+ . Vacuoles lacking both Pmc1 and the H+ /Ca2+ exchanger Vcx1 lacked the ability to take up Ca2+ and instead expelled it upon the addition of ATP. Together these data suggest that a balance of efflux and uptake compete during the fusion pathway and that the levels of PI(3,5)P2 can modulate which path predominates.
Collapse
Affiliation(s)
- Gregory E Miner
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Katherine D Sullivan
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Chi Zhang
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - David Rivera-Kohr
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Annie Guo
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Logan R Hurst
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Ez C Ellis
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Matthew L Starr
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Brandon C Jones
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Rutilio A Fratti
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA.,Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| |
Collapse
|
15
|
Wang Q, Li D, Guo A, Li M, Li L, Zhou J, Mishra SK, Li G, Duan Y, Li Q. Whole-genome resequencing of Dulong Chicken reveal signatures of selection. Br Poult Sci 2020; 61:624-631. [PMID: 32627575 DOI: 10.1080/00071668.2020.1792832] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
1. Dulong Chickens (DLCs) live at high altitude (~3000 m) and humidity (~90%), are endemic to the Yunnan province, and have gradually developed unique physiological characteristics, but their genetic basis is still unclear. Using the fixation index (FST ) approach, based on whole-genome resequencing, DLCs were analysed to uncover the genomic architecture of the population and candidate genes involved in selection during domestication. 2. A total of 469 candidate genes were obtained to be putatively under selection in DLCs. Further investigations revealed the genic footprint for local adaptation (high-altitude and high-humidity) as the genic signatures that are involved in economic traits (related to egg production). 3. Candidate genes were identified that may be associated with disease resistance, aggressiveness, small body size and positive selection of vision in DLCs. 4. These data revealed loci of selective signals that operate during selection for production at high altitude and humidity.
Collapse
Affiliation(s)
- Q Wang
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China (Southwest Forestry University), Ministry of Education , Kunming, China.,Life Science College, Southwest Forestry University , Kunming, China
| | - D Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University , Chengdu, China
| | - A Guo
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China (Southwest Forestry University), Ministry of Education , Kunming, China.,Life Science College, Southwest Forestry University , Kunming, China
| | - M Li
- School of Mathematics and Computer Science, Yunnan Nationalities University , Kunming, China
| | - L Li
- Life Science College, Southwest Forestry University , Kunming, China
| | - J Zhou
- Life Science College, Southwest Forestry University , Kunming, China
| | - S K Mishra
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University , Chengdu, China
| | - G Li
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China (Southwest Forestry University), Ministry of Education , Kunming, China.,Life Science College, Southwest Forestry University , Kunming, China
| | - Y Duan
- Technology Center, China Tobacco Yunnan Industrial Co., Ltd ., Kunming, China
| | - Q Li
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China (Southwest Forestry University), Ministry of Education , Kunming, China.,Life Science College, Southwest Forestry University , Kunming, China.,Kunming Xianghao Technology Co. Ltd ., Kunming, China
| |
Collapse
|
16
|
Derbala M, Guo A, Ferrall J, Dib P, Foraker R, Smith S. Recipients of Public Insurance Have Increased Mortality Post-LVAD. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
17
|
Platto S, Zhu Q, Guo A, He Q, Hu S, Valros A, Irwin A. Chinese farmers' attitude towards the improvement of animal welfare in their facilities. Anim Welf 2020. [DOI: 10.7120/09627286.29.1.099] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This study sought to investigate Chinese farmers' attitude towards animal welfare by using the Theory of Planned Behaviour (TPB). According to the TPB, an individual's intention to behave in a certain way is determined by his/her attitude towards the behaviour (specific attitude —
importance — and general attitudes), the perceived behavioural control (easiness), and the supposed opinion of the people who are important to him/her (subjective norms). A total of 253 questionnaires are used, which included the three main animal productions in chena (swine, poultry
and cattle). Chinese farmers have perceived the improvement of animal welfare as two abstracts: general attitudes (reward-seeking, and empathic farmer); and four specific categories of actions (favourable environment, animal health, humane treatment of animals and farmers' well-being). Our
analysis revealted that general and specific attitudes were the strongest predictors of farmers' intentions to improve animal welfare in the questionnaire study. In fact, Chinese farmers considered it fairly important to improve the animal welfare meaures considered in the survey. In contrast,
the same animal welfare measures were considered difficult to improve by the farmers as indicated by the lack of association between the easiness of improving animal welfare and the intentions. In addition, veterinarians, agricultural advisers, and scientific experts were considered to be
relatively influential subjective norms as regards the activities of the farmers. This is the first study to provide an insight into the underlying meanings and values of Chinese farmers views on improvements to animal welfare.
Collapse
|
18
|
Boczar K, Dowlatshahi D, Liu P, DeKemp R, Kelly C, Garrard L, Lefebvre C, Zhang L, Guo A, Chong A, So D, Beanlands R. OTTAWA CRP STUDY AFTER TIA AND VASCULAR EVENTS (OCTAVE). Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
19
|
Peng HM, Wang LC, Chen JY, Zhou YX, Tian H, Lin JH, Guo WS, Lin Y, Qu TB, Guo A, Cao YP, Weng XS. [Microbiology analysis of periprothetic joint infection post total hip and knee arthroplasty of 9 centers in Beijing between 2014 and 2016]. Zhonghua Wai Ke Za Zhi 2019; 57:596-600. [PMID: 31422629 DOI: 10.3760/cma.j.issn.0529-5815.2019.08.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the microbiological test, antibiotic sensitivity and surgical treatment of periprosthetic joint infection(PJI) cases in post total hip arthroplasty (THA) and total knee arthroplasty (TKA) patients. Methods: A retrospective cross-sectional survey was conducted on 318 patients who underwent THA or TKA in 9 clinical centers in Beijing from January 2014 to December 2016.The data of microbiology, antibiotic sensitivity and surgical treatment were collected.The average age of patients was (62.3±13.1) years old (range: 21-86 years old), including 145 males and 173 females.The body mass index was (25.6±3.8) kg/m (2) (range: 15.6-38.1 kg/m(2)). Results: In total, 318 patients had microorganisms detected by periprosthetic tissue culture or synovial fluid culture, 209 cases (65.7%) had Gram-positive bacteria, 29 cases (9.1%) had Gram-negative bacteria, 10 cases (3.1%) had fungi, 3 cases (0.9%) had non-tuberculous mycobacteria, 72 cases (22.6%) were negative, 69 cases (21.7%) had methicillin-resistant bacteria. The antibiotic sensitivity results showed that the overall resistance rate of penicillin, cefuroxime, amoxicillin+clavulanic acid was 79.9%, 69.9%, and 68.1%, respectively; meropenem, vancomycin, and linezolid resistance rate was 0. For the treatment methods of hip and knee PJI, two-stage revision surgery acounted for 72.9% (108/148) and 64.1% (109/170), respectively. One-stage revision surgery accounted for 21.6% (32/148) and 7.6% (13/170), and open debridement surgery accounted for 4.7%(7/148) and 26.4% (45/170). Conclusions: Gram-positive bacteria was still the main pathogen of PJI.The methicillin-resistant bacteria and rare bacteria should be payed attention to. The Majority of hip and knee PJI cases were treated by two-stage revision surgery.
Collapse
Affiliation(s)
- H M Peng
- Department of Orthopedics, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - L C Wang
- Department of Orthopedics, Guangdong Provincial People's Hospital, Guangzhou 510080, China
| | - J Y Chen
- Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China
| | - Y X Zhou
- Department of Orthopedics, Beijing Jishuitan Hospital, Beijing 100035, China
| | - H Tian
- Department of Orthopedics, Peking University Third Hospital, Beijing 100083, China
| | - J H Lin
- Department of Orthopedics, Peking University People's Hospital, Beijing 100044, China
| | - W S Guo
- Department of Orthopedics, Sino-Japanese Friendship Hospital, Beijing 100029, China
| | - Y Lin
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - T B Qu
- Department of Orthopedics, China Rehabilitation Research Center Beijing Boai Hospital, Beijing 100068, China
| | - A Guo
- Department of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Y P Cao
- Department of Orthopedics, Peking University First Hospital, Beijing 100034, China
| | - X S Weng
- Department of Orthopedics, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| |
Collapse
|
20
|
Miner GE, Sullivan KD, Zhang C, Hurst LR, Starr ML, Rivera-Kohr DA, Jones BC, Guo A, Fratti RA. Copper blocks V-ATPase activity and SNARE complex formation to inhibit yeast vacuole fusion. Traffic 2019; 20:841-850. [PMID: 31368617 DOI: 10.1111/tra.12683] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 07/22/2019] [Accepted: 07/22/2019] [Indexed: 12/23/2022]
Abstract
The accumulation of copper in organisms can lead to altered functions of various pathways and become cytotoxic through the generation of reactive oxygen species. In yeast, cytotoxic metals such as Hg+ , Cd2+ and Cu2+ are transported into the lumen of the vacuole through various pumps. Copper ions are initially transported into the cell by the copper transporter Ctr1 at the plasma membrane and sequestered by chaperones and other factors to prevent cellular damage by free cations. Excess copper ions can subsequently be transported into the vacuole lumen by an unknown mechanism. Transport across membranes requires the reduction of Cu2+ to Cu+ . Labile copper ions can interact with membranes to alter fluidity, lateral phase separation and fusion. Here we found that CuCl2 potently inhibited vacuole fusion by blocking SNARE pairing. This was accompanied by the inhibition of V-ATPase H+ pumping. Deletion of the vacuolar reductase Fre6 had no effect on the inhibition of fusion by copper. This suggests that Cu2+ is responsible for the inhibition of vacuole fusion and V-ATPase function. This notion is supported by the differential effects of chelators. The Cu2+ -specific chelator triethylenetetramine rescued fusion, whereas the Cu+ -specific chelator bathocuproine disulfonate had no effect on the inhibited fusion.
Collapse
Affiliation(s)
- Gregory E Miner
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Katherine D Sullivan
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Chi Zhang
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Logan R Hurst
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Matthew L Starr
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - David A Rivera-Kohr
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Brandon C Jones
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Annie Guo
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Rutilio A Fratti
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois.,Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois
| |
Collapse
|
21
|
Renaud JM, Wiles M, Aung M, Gardner K, Guo A, Garrard L, Beanlands R, Dekemp R. 243Quality assurance metrics for routine clinical PET rubidium-82 myocardial blood flow quantification. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez145.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J M Renaud
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - M Wiles
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - M Aung
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - K Gardner
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - A Guo
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - L Garrard
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - R Beanlands
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - R Dekemp
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| |
Collapse
|
22
|
Miner GE, Sullivan KD, Guo A, Jones BC, Hurst LR, Ellis EC, Starr ML, Fratti RA. Phosphatidylinositol 3,5-bisphosphate regulates the transition between trans-SNARE complex formation and vacuole membrane fusion. Mol Biol Cell 2018; 30:201-208. [PMID: 30427760 PMCID: PMC6589561 DOI: 10.1091/mbc.e18-08-0505] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Phosphoinositides (PIs) regulate a myriad of cellular functions including membrane fusion, as exemplified by the yeast vacuole, which uses various PIs at different stages of fusion. In light of this, the effect of phosphatidylinositol 3,5-bisphosphate (PI(3,5)P2) on vacuole fusion remains unknown. PI(3,5)P2 is made by the PI3P 5-kinase Fab1 and has been characterized as a regulator of vacuole fission during hyperosmotic shock, where it interacts with the TRP Ca2+ channel Yvc1. Here we demonstrate that exogenously added dioctanoyl (C8) PI(3,5)P2 abolishes homotypic vacuole fusion. This effect was not linked to Yvc1, as fusion was equally affected using yvc1Δ vacuoles. Thus, the effects of C8-PI(3,5)P2 on fusion and fission operate through distinct mechanisms. Further testing showed that C8-PI(3,5)P2 inhibited vacuole fusion after trans-SNARE pairing. Although SNARE complex formation was unaffected, we found that C8-PI(3,5)P2 blocked outer leaflet lipid mixing. Overproduction of endogenous PI(3,5)P2 by the fab1T2250A hyperactive kinase mutant also inhibited the lipid mixing stage, bolstering the model in which PI(3,5)P2 inhibits fusion when present at elevated levels. Taken together, this work identifies a novel function for PI(3,5)P2 as a regulator of vacuolar fusion. Moreover, it suggests that this lipid acts as a molecular switch between fission and fusion.
Collapse
Affiliation(s)
- Gregory E Miner
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Katherine D Sullivan
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Annie Guo
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Brandon C Jones
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Logan R Hurst
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Ez C Ellis
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Matthew L Starr
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Rutilio A Fratti
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801.,Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| |
Collapse
|
23
|
Renaud JM, Guo A, Gulenchyn K, Trottier M, Abele J, Harel F, Beanlands RSB, Dekemp RA. P4697Multi-center clinical evaluation of a precision-controlled rubidium-82 elution system for PET myocardial perfusion imaging. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4697] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J M Renaud
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - A Guo
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - K Gulenchyn
- St Joseph's Healthcare Hamilton, Department of Nuclear Medicine, Hamilton, Canada
| | - M Trottier
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Department of Nuclear Medicine, Québec, Canada
| | - J Abele
- University of Alberta Hospital, Department of Radiology & Diagnostic Imaging, Edmonton, Canada
| | - F Harel
- Montreal Heart Institute, Department of Nuclear Medicine, Montreal, Canada
| | - R S B Beanlands
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - R A Dekemp
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| |
Collapse
|
24
|
Ding S, Chen J, Zeng Q, Lu J, Tan L, Guo A, Kang J, Yang S, Xiang Y, Zuo C, Huang J. 长期日晒与组蛋白乙酰化变化有关. Br J Dermatol 2018. [DOI: 10.1111/bjd.16866] [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: 12/01/2022]
|
25
|
Ding S, Chen J, Zeng Q, Lu J, Tan L, Guo A, Kang J, Yang S, Xiang Y, Zuo C, Huang J. Chronic sun exposure is associated with histone acetylation changes. Br J Dermatol 2018. [DOI: 10.1111/bjd.16852] [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: 11/27/2022]
|
26
|
Ding S, Chen J, Zeng Q, Lu J, Tan L, Guo A, Kang J, Yang S, Xiang Y, Zuo C, Huang J. Chronic sun exposure is associated with distinct histone acetylation changes in human skin. Br J Dermatol 2018; 179:110-117. [PMID: 29150847 DOI: 10.1111/bjd.16129] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2017] [Indexed: 01/24/2023]
Abstract
BACKGROUND Photoageing is attributed to continuous sunlight or artificial ultraviolet exposure and manifests as clinical and histological changes in skin. Epigenetic changes have been found to be involved in the pathogenesis of photoageing. However, the underlying mechanisms are unclear. OBJECTIVES To analyse histone modification patterns in sun-exposed and nonexposed skin, and to identify the abnormally histone-modified genes related to photoageing. METHODS Skin biopsies were collected from both the outer forearm (sun-exposed area) and the buttock (sun-protected area) in 20 healthy middle-aged female volunteers. Global histone H3/H4 acetylation and H3K4/H3K9 methylation statuses were assessed by enzyme-linked immunosorbent assay. Expression levels of histone acetyltransferases and histone deacetylases were measured by reverse-transcriptase quantitative polymerase chain reaction (qPCR) and Western blot. Chromatin immunoprecipitation combined with DNA microarray (ChIP-chip) assay with anti-acetyl-histone H3 antibody in a sun-exposed pool (combining six sun-exposed skin samples) and a nonexposed pool (combining six nonexposed skin samples) was conducted to explore the abnormally acetylated histone H3 genes related to photoageing; ChIP-qPCR was then used to verify the results of ChIP-chip. RESULTS We observed higher global histone H3 acetylation levels increased EP300 and decreased HDAC1 and SIRT1 expression in sun-exposed skin compared with matched nonexposed skin. Furthermore, the ChIP-chip assay showed that 227 genes displayed significant hyperacetylation of histone H3, and 81 genes displayed significant hypoacetylation of histone H3 between the two groups. Histone H3 acetylation levels on the promoters of PDCD5, ITIH5, MMP1 and AHR were positively correlated with the mRNA expression of the corresponding gene. CONCLUSIONS Chronic sun exposure-induced histone H3 hyperacetylation may play a critical role in the pathogenesis of skin photoageing.
Collapse
Affiliation(s)
- S Ding
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - J Chen
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - Q Zeng
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - J Lu
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - L Tan
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - A Guo
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - J Kang
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - S Yang
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - Y Xiang
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - C Zuo
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - J Huang
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| |
Collapse
|
27
|
Guo A, Chen J, Yang C, Ding Y, Zeng Q, Tan L. The challenge of diagnosing seborrheic keratosis by reflectance confocal microscopy. Skin Res Technol 2018; 24:663-666. [PMID: 29797357 DOI: 10.1111/srt.12582] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/02/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND Seborrheic keratosis (SK) is one of the most common skin tumors seen by dermatologists. It should be differentiated with many diseases, especially skin tumors. Reflectance confocal microscopy (RCM) has been applied for evaluation of SK. There are a few studies that describe the RCM of SK. The aim of the study was to find the challenge of diagnosing seborrheic keratosis by reflectance confocal microscopy. METHODS A total of 390 patients with a clinical suspicious diagnosis of seborrheic keratosis were enrolled in this study, and lesions from each patient were imaged with RCM. Thirty-seven of these patients performed a biopsy in order to be given a histological diagnosis. We retrospectively analyzed the outcomes of RCM diagnosis and histological diagnosis, and then found the RCM characteristics of biopsy-proven lesions. RESULTS According to RCM images, 258 of 390 (66.2%) patients were diagnosed with SK, 97 of 390 (24.9%) patients could not be diagnosed by the dermatologist according to RCM. Of all 37 biopsied lesions, 23 were SK, 6 were actinic keratosis, 2 were basal cell carcinoma, and 2 were squamous cell carcinoma. CONCLUSION It is challenge to diagnose seborrheic keratosis by reflectance confocal microscopy. It may due to the variable clinical and RCM appearances of SK, and limited depth of RCM.
Collapse
Affiliation(s)
- A Guo
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - J Chen
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - C Yang
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Y Ding
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Q Zeng
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - L Tan
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| |
Collapse
|
28
|
Guo A, Sarkar I, Chen E, Walker J, Stey P, Li W, Cho E, Qureshi A. 329 Impact of ultraviolet exposure on merkel cell carcinoma long-term survival. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
29
|
Miner GE, Guo A, Sullivan KD, Fratti RA. Yvc1 acts as a Novel Suppressor of Vacuolar Membrane Fusion. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.542.13] [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: 11/11/2022]
Affiliation(s)
| | - Annie Guo
- BiochemistryUniversity of Illinois at Urbana‐ChampaignUrbanaIL
| | | | | |
Collapse
|
30
|
Gupta G, Guo A, Feng W, Simpson D. A CRISPR Screen to Systematically Identify DNA Repair Gene Alterations that Modulate Sensitivity to DNA Damaging Agents. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.086] [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: 10/18/2022]
|
31
|
Hawkins R, Guo A, Mehaffey J, Fonner C, Speir A, Rich J, Quader M, Ailawadi G, Yarboro L. Postoperative Atrial Fibrillation After Left Ventricular Assist Device Placement Increases Morbidity and Resource Utilization. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.476] [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: 11/24/2022] Open
|
32
|
Guo A, Lu P, Lee J, Zhen C, Chiosis G, Wang YL. HSP90 stabilizes B-cell receptor kinases in a multi-client interactome: PU-H71 induces CLL apoptosis in a cytoprotective microenvironment. Oncogene 2017; 36:3441-3449. [PMID: 28114285 DOI: 10.1038/onc.2016.494] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 10/30/2016] [Accepted: 10/31/2016] [Indexed: 01/15/2023]
Abstract
Chronic lymphocytic leukemia (CLL) is characterized by the accumulation of B cells in the hematopoietic system and lymphoid tissues. Although inhibitors targeting the B-cell receptor (BCR) pathway have been successful in the treatment of the disease, the underlying mechanisms leading to BCR over-activity in CLL are not fully understood. In this study, we found that HSP90, a highly conserved molecular chaperone, is overexpressed in CLL compared with resting B cells. HSP90 overexpression is accompanied by the overexpression of several BCR kinases including LYN, spleen tyrosine kinase, Bruton tyrosine kinase and AKT. Chemical and immune-precipitation demonstrated that these BCR constituents are present in a multi-client chaperone complex with HSP90. Inhibition of HSP90 with PU-H71 destabilized the BCR kinases and caused apoptosis of CLL cells through the mitochondrial apoptotic pathway. Further, PU-H71 induced apoptosis in the presence of stromal co-culture or cytoprotective survival signals. Finally, genetic knockdown of HSP90 and its client AKT, but not BTK, reduced CLL viability. Overall, our study suggests that the chaperone function of HSP90 contributes to the over-activity of the BCR signaling in CLL and inhibition of HSP90 has the potential to achieve a multi-targeting effect. Thus, HSP90 inhibition may be explored to prevent or overcome drug resistance to single targeting agents.
Collapse
Affiliation(s)
- A Guo
- Division of Genomic and Molecular Pathology, Department of Pathology, University of Chicago and
| | - P Lu
- Division of Genomic and Molecular Pathology, Department of Pathology, University of Chicago and
| | - J Lee
- Division of Genomic and Molecular Pathology, Department of Pathology, University of Chicago and
| | - C Zhen
- Division of Genomic and Molecular Pathology, Department of Pathology, University of Chicago and
| | - G Chiosis
- Program in Chemical Biology, Memorial Sloan-Kettering Cancer Center, New York, NY, USA and Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Y L Wang
- Division of Genomic and Molecular Pathology, Department of Pathology, University of Chicago and
| |
Collapse
|
33
|
Chow SKH, Leung KS, Qin J, Guo A, Sun M, Qin L, Cheung WH. Mechanical stimulation enhanced estrogen receptor expression and callus formation in diaphyseal long bone fracture healing in ovariectomy-induced osteoporotic rats. Osteoporos Int 2016; 27:2989-3000. [PMID: 27155884 DOI: 10.1007/s00198-016-3619-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 04/27/2016] [Indexed: 12/28/2022]
Abstract
UNLABELLED Estrogen receptor (ER) in ovariectomy-induced osteoporotic fracture was reported to exhibit delayed expression. Mechanical stimulation enhanced ER-α expression in osteoporotic fracture callus at the tissue level. ER was also found to be required for the effectiveness of vibrational mechanical stimulation treatment in osteoporotic fracture healing. INTRODUCTION Estrogen receptor(ER) is involved in mechanical signal transduction in bone metabolism. Its expression was reported to be delayed in osteoporotic fracture healing. The purpose of this study was to investigate the roles played by ER during osteoporotic fracture healing enhanced with mechanical stimulation. METHODS Ovariectomy-induced osteoporotic SD rats that received closed femoral fractures were divided into five groups, (i) SHAM, (ii) SHAM-VT, (iii) OVX, (iv) OVX-VT, and (v) OVX-VT-ICI, where VT stands for whole-body vibration treatment and ICI for ER antagonization by ICI 182,780. Callus formation and gene expression were assessed at 2, 4, and 8 weeks postfracture. In vitro osteoblastic differentiation, mineralization, and ER-α expression were assessed. RESULTS The delayed ER expression was found to be enhanced by vibration treatment. Callus formation enhancement was shown by callus morphometry and micro-CT analysis. Enhancement effects by vibration were partially abolished when ER was modulated by ICI 182,780, in terms of callus formation capacity at 2-4 weeks and ER gene and protein expression at all time points. In vitro, ER expression in osteoblasts was not enhanced by VT treatment, but osteoblastic differentiation and mineralization were enhanced under estrogen-deprived condition. When osteoblastic cells were modulated by ICI 182,780, enhancement effects of VT were eliminated. CONCLUSIONS Vibration was able to enhance ER expression in ovariectomy-induced osteoporotic fracture healing. ER was essential in mechanical signal transduction and enhancement in callus formation effects during osteoporotic fracture healing enhanced by vibration. The enhancement of ER-α expression by mechanical stimulation was not likely to be related to the increased expression in osteoblastic cells but rather to the systemic enhancement in recruitment of ER-expressing progenitor cells through increased blood flow and neo-angiogenesis. This finding might explain the observed difference in mechanical sensitivity of osteoporotic fracture to mechanical stimulation.
Collapse
Affiliation(s)
- S K H Chow
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
- The CUHK-ACC Space Medicine Centre on Health Maintenance of Musculoskeletal System, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, The People's Republic of China
| | - K S Leung
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
- Translational Medicine Research and Development Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, The People's Republic of China
| | - J Qin
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
| | - A Guo
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
| | - M Sun
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
| | - L Qin
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
- The CUHK-ACC Space Medicine Centre on Health Maintenance of Musculoskeletal System, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, The People's Republic of China
- Translational Medicine Research and Development Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, The People's Republic of China
| | - W H Cheung
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China.
- The CUHK-ACC Space Medicine Centre on Health Maintenance of Musculoskeletal System, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, The People's Republic of China.
- Translational Medicine Research and Development Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, The People's Republic of China.
| |
Collapse
|
34
|
Cheng NT, Guo A, Cui YP. Intra-articular injection of Torin 1 reduces degeneration of articular cartilage in a rabbit osteoarthritis model. Bone Joint Res 2016; 5:218-24. [PMID: 27301478 PMCID: PMC4921044 DOI: 10.1302/2046-3758.56.bjr-2015-0001] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 03/17/2016] [Indexed: 01/22/2023] Open
Abstract
Objectives Recent studies have shown that systemic injection of rapamycin can prevent the development of osteoarthritis (OA)-like changes in human chondrocytes and reduce the severity of experimental OA. However, the systemic injection of rapamycin leads to many side effects. The purpose of this study was to determine the effects of intra-articular injection of Torin 1, which as a specific inhibitor of mTOR which can cause induction of autophagy, is similar to rapamycin, on articular cartilage degeneration in a rabbit osteoarthritis model and to investigate the mechanism of Torin 1’s effects on experimental OA. Methods Collagenase (type II) was injected twice into both knees of three-month-old rabbits to induce OA, combined with two intra–articular injections of Torin 1 (400 nM). Degeneration of articular cartilage was evaluated by histology using the Mankin scoring system at eight weeks after injection. Chondrocyte degeneration and autophagosomes were observed by transmission electron microscopy. Matrix metallopeptidase-13 (MMP-13) and vascular endothelial growth factor (VEGF) expression were analysed by quantitative RT-PCR (qPCR).Beclin-1 and light chain 3 (LC3) expression were examined by Western blotting. Results Intra-articular injection of Torin 1 significantly reduced degeneration of the articular cartilage after induction of OA. Autophagosomes andBeclin-1 and LC3 expression were increased in the chondrocytes from Torin 1-treated rabbits. Torin 1 treatment also reduced MMP-13 and VEGF expression at eight weeks after collagenase injection. Conclusion Our results demonstrate that intra-articular injection of Torin 1 reduces degeneration of articular cartilage in collagenase-induced OA, at least partially by autophagy activation, suggesting a novel therapeutic approach for preventing cartilage degeneration and treating OA. Cite this article: N-T. Cheng, A. Guo, Y-P. Cui. Intra-articular injection of Torin 1 reduces degeneration of articular cartilage in a rabbit osteoarthritis model. Bone Joint Res 2016;5:218–224. DOI: 10.1302/2046-3758.56.BJR-2015-0001.
Collapse
Affiliation(s)
- N-T Cheng
- Beijing Friendship Hospital, Capital Medical University, 95 Yongan Road, Xi-Cheng District, Beijing 100050, China
| | - A Guo
- Beijing Friendship Hospital, Capital Medical University, 95 Yongan Road, Xi-Cheng District, Beijing 100050, China
| | - Y-P Cui
- Beijing Friendship Hospital, Capital Medical University, 95 Yongan Road, Xi-Cheng District, Beijing 100050, China
| |
Collapse
|
35
|
Wei FY, Chow SK, Leung KS, Qin J, Guo A, Yu OL, Li G, Cheung WH, Cheung WH. Low-magnitude high-frequency vibration enhanced mesenchymal stem cell recruitment in osteoporotic fracture healing through the SDF-1/CXCR4 pathway. Eur Cell Mater 2016; 31:341-54. [PMID: 27215741 DOI: 10.22203/ecm.v031a22] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Low-magnitude high-frequency vibration (LMHFV) has been proven to promote osteoporotic fracture healing. Mechanical stimulation was reported to enhance SDF-1/CXCR4 signalling in mesenchymal stem cells (MSCs). We hypothesised that LMHFV promoted osteoporotic fracture healing by enhancing MSC migration through the SDF-1/CXCR4 pathway. 152 ovariectomised SD-rats received closed femoral fracture in groups of vibration+MSC (VMG) (20 min/d, 5 d/week), vibration+MSC+AMD3100 (VMAG; AMD, a CXCR4 inhibitor) (1 mg/kg/d, intraperitoneal), MSC (MG) (1 × 106 MSC, intracardiac) or control (CG) for a treatment duration of 2, 4 or 8 weeks. MSC migration was evaluated by ex-vivo green fluorescent protein signal in the callus; and fracture healing was examined by weekly radiographs, endpoint computed-tomography and mechanical test. At week-2 and week-4, ex-vivo callus GFP intensity of VMG was significantly higher than other groups (p < 0.05). From week-2 to week-3, both callus width and callus area in VMG were significantly larger; and from week-7 to week-8, smaller than other groups (p < 0.05). At week-8, high-density bone volume fraction, bone volume fraction, bone mineral density and stiffness in VMG were significantly higher than other 3 groups (p < 0.05). This study demonstrated that LMHFV promoted MSC migration and fracture healing in osteoporotic rats. This effect was attenuated by CXCR4 inhibitor, providing strong evidence that SDF-1-mediated MSC migration was one of the important mechanisms through which LMHFV enhanced fracture healing.
Collapse
Affiliation(s)
- F Y Wei
- General Office, Department of Orthopaedics and Traumatology, 5/F Lui Che Woo Clinical Sciences Building, Prince of Wales Hospital, Shatin, Hong
| | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Crocini C, Ferrantini C, Scardigli M, Coppini R, Mazzoni L, Lazzeri E, Pioner JM, Scellini B, Guo A, Song LS, Yan P, Loew LM, Tardiff J, Tesi C, Vanzi F, Cerbai E, Pavone FS, Sacconi L, Poggesi C. Novel insights on the relationship between T-tubular defects and contractile dysfunction in a mouse model of hypertrophic cardiomyopathy. J Mol Cell Cardiol 2015; 91:42-51. [PMID: 26714042 PMCID: PMC4767219 DOI: 10.1016/j.yjmcc.2015.12.013] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 11/16/2015] [Accepted: 12/16/2015] [Indexed: 02/06/2023]
Abstract
Abnormalities of cardiomyocyte Ca2 + homeostasis and excitation–contraction (E–C) coupling are early events in the pathogenesis of hypertrophic cardiomyopathy (HCM) and concomitant determinants of the diastolic dysfunction and arrhythmias typical of the disease. T-tubule remodelling has been reported to occur in HCM but little is known about its role in the E–C coupling alterations of HCM. Here, the role of T-tubule remodelling in the electro-mechanical dysfunction associated to HCM is investigated in the Δ160E cTnT mouse model that expresses a clinically-relevant HCM mutation. Contractile function of intact ventricular trabeculae is assessed in Δ160E mice and wild-type siblings. As compared with wild-type, Δ160E trabeculae show prolonged kinetics of force development and relaxation, blunted force-frequency response with reduced active tension at high stimulation frequency, and increased occurrence of spontaneous contractions. Consistently, prolonged Ca2 + transient in terms of rise and duration are also observed in Δ160E trabeculae and isolated cardiomyocytes. Confocal imaging in cells isolated from Δ160E mice reveals significant, though modest, remodelling of T-tubular architecture. A two-photon random access microscope is employed to dissect the spatio-temporal relationship between T-tubular electrical activity and local Ca2 + release in isolated cardiomyocytes. In Δ160E cardiomyocytes, a significant number of T-tubules (> 20%) fails to propagate action potentials, with consequent delay of local Ca2 + release. At variance with wild-type, we also observe significantly increased variability of local Ca2 + transient rise as well as higher Ca2 +-spark frequency. Although T-tubule structural remodelling in Δ160E myocytes is modest, T-tubule functional defects determine non-homogeneous Ca2 + release and delayed myofilament activation that significantly contribute to mechanical dysfunction. Contraction and Ca2 + transient kinetics are impaired in myocardial preparations from mice carrying the cardiac troponin T ∆ 160E mutation. T-tubules architecture is mildly altered in ∆160E cardiomyocytes. 20% of T-tubules fail to propagate action potential and produce delay of local Ca2 + rise. Higher spatio-temporal variability of local Ca2 + rise and increased Ca2 + sparks frequency are found in ∆160E cardiomyocytes.
Collapse
Affiliation(s)
- C Crocini
- European Laboratory for Non-Linear Spectroscopy, 50019 Florence, Italy
| | - C Ferrantini
- Division of Physiology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - M Scardigli
- European Laboratory for Non-Linear Spectroscopy, 50019 Florence, Italy
| | - R Coppini
- Division of Pharmacology, Department "NeuroFarBa", University of Florence, 50139 Florence, Italy
| | - L Mazzoni
- Division of Pharmacology, Department "NeuroFarBa", University of Florence, 50139 Florence, Italy
| | - E Lazzeri
- European Laboratory for Non-Linear Spectroscopy, 50019 Florence, Italy
| | - J M Pioner
- Division of Physiology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - B Scellini
- Division of Physiology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - A Guo
- Division of Cardiovascular Medicine, Department of Internal Medicine and Francois M. Abboud Cardiovascular Research Center, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - L S Song
- Division of Cardiovascular Medicine, Department of Internal Medicine and Francois M. Abboud Cardiovascular Research Center, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - P Yan
- R. D. Berlin Center for Cell Analysis and Modeling, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - L M Loew
- R. D. Berlin Center for Cell Analysis and Modeling, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - J Tardiff
- Cellular and Molecular Medicine, University of Arizona, Tucson, AZ 85721, USA
| | - C Tesi
- Division of Physiology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - F Vanzi
- European Laboratory for Non-Linear Spectroscopy, 50019 Florence, Italy
| | - E Cerbai
- Division of Pharmacology, Department "NeuroFarBa", University of Florence, 50139 Florence, Italy
| | - F S Pavone
- European Laboratory for Non-Linear Spectroscopy, 50019 Florence, Italy; Department of Physics and Astronomy, University of Florence, 50019 Sesto Fiorentino, Italy; National Institute of Optics, National Research Council, 50125 Florence, Italy
| | - L Sacconi
- European Laboratory for Non-Linear Spectroscopy, 50019 Florence, Italy; National Institute of Optics, National Research Council, 50125 Florence, Italy.
| | - C Poggesi
- Division of Physiology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy.
| |
Collapse
|
37
|
Pan Y, Cao F, Guo A, Chang W, Chen X, Ma W, Gao X, Guo S, Fu C, Zhu J. Endoplasmic reticulum ribosome-binding protein 1, RRBP1, promotes progression of colorectal cancer and predicts an unfavourable prognosis. Br J Cancer 2015. [PMID: 26196185 PMCID: PMC4559827 DOI: 10.1038/bjc.2015.260] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Ribosome-binding protein 1 (RRBP1) has been implicated in the regulation of unfolded protein response, which is involved in almost every aspect of cancer development. We aimed to explore the significance of RRBP1 in the progression and prognosis of colorectal cancer (CRC). METHODS The study population consisted of 856 patients with stage I-III CRC from two hospitals. RRBP1 expression was examined by immunohistochemistry (IHC) in colorectal tissues. The correlation of RRBP1 expression and CRC occurrence was assessed in paired cancer-adjacent tissues. Factors contributing to prognosis were evaluated in a training-validation design with univariate and multivariate Cox analysis. Colorectal cancer aggressiveness caused by RRBP1 knockdown or overexpression was evaluated in CRC cells. RESULTS RRBP1 was aberrantly overexpressed in CRC. Compared with low-RRBP1 patients, high-RRBP1 patients had shorter disease-specific survival in the training (hazard ratio (HR), 2.423; 95% confidence interval (CI), 1.531-3.835) and validation cohorts (HR, 3.749; 95% CI, 2.166-6.448) in multivariate Cox analysis. High-RRBP1 independently predicted a shorter disease-free survival (HR, 4.821; 95% CI, 3.220-7.218) in the validation cohort. RRBP1 knockdown reduced the aggressiveness of CRC cells in vitro and inhibited the growth of CRC xenografts in vivo. CONCLUSIONS High RRBP1 expression facilitates CRC progression and predicts an unfavourable post-operative prognosis.
Collapse
Affiliation(s)
- Y Pan
- Department of Digestive Endoscopy, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, 528 Zhangheng Road, Shanghai, 201203, China
| | - F Cao
- Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, 174 Changhai Road, Shanghai, 200433, China
| | - A Guo
- Department of Internal Medicine, Yangpu Hosptial, Tongji University School of Medicine, 450 Tengyue Road, Shanghai, 200090, China
| | - W Chang
- Department of Environmental Hygiene, Second Military Medical University, 800 Xiangyin Road, Shanghai, 200433, China
| | - X Chen
- Department of Environmental Hygiene, Second Military Medical University, 800 Xiangyin Road, Shanghai, 200433, China
| | - W Ma
- Department of Environmental Hygiene, Second Military Medical University, 800 Xiangyin Road, Shanghai, 200433, China
| | - X Gao
- Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, 174 Changhai Road, Shanghai, 200433, China
| | - S Guo
- Department of Pathology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, 528 Zhangheng Road, Shanghai, 201203, China
| | - C Fu
- Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, 174 Changhai Road, Shanghai, 200433, China
| | - J Zhu
- Department of Environmental Hygiene, Second Military Medical University, 800 Xiangyin Road, Shanghai, 200433, China
| |
Collapse
|
38
|
Zeng J, Ma L, Meng H, Yu H, Zhang Y, Guo A. Effect of Ginkgo biloba extract on matrix metalloproteinase-3 expression in a rat model of chondrocyte injury. Genet Mol Res 2015; 14:18280-6. [DOI: 10.4238/2015.december.23.15] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
39
|
Srivaratharajah K, R deKemp, Liu P, Haddad H, Stadnick E, Dwivedi G, Davies R, Guo A, Beanlands R, Mielniczuk L. EVALUATION OF MYOCARDIAL FLOW RESERVE WITH CARDIAC PET IMAGING IN HEART FAILURE PATIENTS WITH PRESERVED EJECTION FRACTION. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.315] [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: 11/28/2022] Open
|
40
|
Fieldston ES, Zaoutis LB, Agosto PM, Guo A, Jonas JA, Tsarouhas N. Measuring patient flow in a children's hospital using a scorecard with composite measurement. J Hosp Med 2014; 9:463-8. [PMID: 24753375 DOI: 10.1002/jhm.2202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 03/21/2014] [Accepted: 03/28/2014] [Indexed: 11/10/2022]
Abstract
BACKGROUND Although patient flow is a focus for improvement in hospitals, commonly used single or unaggregated measures fail to capture its complexity. Composite measures can account for multiple dimensions of performance but have not been reported for the assessment of patient flow. OBJECTIVES To present and discuss the implementation of a composite measure system as a way to measure and monitor patient flow and improvement activities at an urban children's hospital. METHODS A 5-domain patient flow scorecard with composite measurement was designed by an interdisciplinary workgroup using measures involved in multiple aspects of patient flow. RESULTS The composite score measurement system provided improvement teams and administrators with a comprehensive overview of patient flow. It captured overall performance trends and identified operational domains and specific components of patient flow that required improvement. DISCUSSION A patient flow scorecard with composite measurement holds advantages over a single or unaggregated measurement system, because it provides a holistic assessment of performance while also identifying specific areas in need of improvement.
Collapse
Affiliation(s)
- Evan S Fieldston
- Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | | | | | | | | | | |
Collapse
|
41
|
Qin J, Chow SKH, Guo A, Wong WN, Leung KS, Cheung WH. Low magnitude high frequency vibration accelerated cartilage degeneration but improved epiphyseal bone formation in anterior cruciate ligament transect induced osteoarthritis rat model. Osteoarthritis Cartilage 2014; 22:1061-7. [PMID: 24852700 DOI: 10.1016/j.joca.2014.05.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 05/07/2014] [Accepted: 05/12/2014] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To evaluate the effects of low-magnitude high-frequency vibration (LMHFV) on degenerated articular cartilage and subchondral bone in anterior cruciate ligament transection (ACLT) induced osteoarthritis (OA) rat model. METHODS 6 months old female Sprague-Dawley rats received ACLT on right knee and randomly divided into treatment and control groups. OA developed 12 weeks after surgery. LMHFV (35 Hz, 0.3 g) treatment was given 20 min/day and 5 days/week. After 6, 12 and 18 weeks, six rats of each group were sacrificed at each time point and the right knees were harvested. OA grading score, distal femur cartilage volume (CV), subchondral bone morphology, elastic modulus of cartilage and functional changes between groups were analyzed. RESULTS Increased cartilage degradation (higher OA grading score) and worse functional results (lower duty cycle, regular index and higher limb idleness index) were observed after LMHFV treatment (P = 0.011, 0.020, 0.012 and 0.005, respectively). CV increased after LMHFV treatment (P = 0.019). Subchondral bone density increased with OA progress (P < 0.01). Increased BV/TV, Tb.N and decreased Tb.Sp were observed in distal femur epiphysis in LMHFV treatment group (P = 0.006, 0.018 and 0.011, respectively). CONCLUSION LMHFV accelerated cartilage degeneration and caused further functional deterioration of OA affected limb in ACLT-induced OA rat model. In contrast, LMHFV promoted bone formation in OA affected distal femur epiphysis, but did not reverse OA progression.
Collapse
Affiliation(s)
- J Qin
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - S K-H Chow
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - A Guo
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - W-N Wong
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - K-S Leung
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - W-H Cheung
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| |
Collapse
|
42
|
Zhu X, You Y, Li Q, Zeng C, Fu F, Guo A, Zhang H, Zou P, Zhong Z, Wang H, Wu Y, Li Q, Kong F, Chen Z. BCR-ABL1–positive microvesicles transform normal hematopoietic transplants through genomic instability: implications for donor cell leukemia. Leukemia 2014; 28:1666-75. [DOI: 10.1038/leu.2014.51] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 01/19/2014] [Accepted: 01/24/2014] [Indexed: 12/20/2022]
|
43
|
Rogers J, Guo A, Goodyer I, Wilkinson P. EPA-1075 – Initial insomnia and cortisol levels in depressed adolescents. Eur Psychiatry 2014. [DOI: 10.1016/s0924-9338(14)78355-5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
44
|
Ohira H, Birnie D, Mc Ardle B, Leung E, Yoshinaga K, Tsujino I, Sato T, Bernick J, Wells G, Klein R, Guo A, Garrard L, Ruddy T, Chow B, Davies R, Hessian R, Kingsbury K, Beanlands R, Nery P. Different Characteristics of Disease Detection Between 18F-Fluorodeoxyglucose-Positron Emission Tomography (FDG-PET) and Cardiac Magnetic Resonance (CMR) in Patients With Conduction Disease Due to Cardiac Sarcoidosis. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.451] [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: 10/26/2022] Open
|
45
|
McArdle BA, Davies R, Small G, Yam Y, Haddad H, Mielniczuk L, Stadnick E, Guo A, Beanlands R, R deKemp, Chow B. Prognostic Value of Rubidium-82 Positron Emission Tomography for Evaluation of Patients Following Cardiac Transplantation. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.196] [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
|
46
|
Chu TH, Wang L, Guo A, Chan VWK, Wong CWM, Wu W. GDNF-treated acellular nerve graft promotes motoneuron axon regeneration after implantation into cervical root avulsed spinal cord. Neuropathol Appl Neurobiol 2013; 38:681-95. [PMID: 22289090 DOI: 10.1111/j.1365-2990.2012.01253.x] [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] [Indexed: 11/29/2022]
Abstract
UNLABELLED It is well known that glial cell line-derived neurotrophic factor (GDNF) is a potent neurotrophic factor for motoneurons. We have previously shown that it greatly enhanced motoneuron survival and axon regeneration after implantation of peripheral nerve graft following spinal root avulsion. AIMS In the current study, we explore whether injection of GDNF promotes axon regeneration in decellularized nerve induced by repeated freeze-thaw cycles. METHODS We injected saline or GDNF into the decellularized nerve after root avulsion in adult Sprague-Dawley rats and assessed motoneuron axon regeneration and Schwann cell migration by retrograde labelling and immunohistochemistry. RESULTS We found that no axons were present in saline-treated acellular nerve whereas Schwann cells migrated into GDNF-treated acellular nerve grafts. We also found that Schwann cells migrated into the nerve grafts as early as 4 days after implantation, coinciding with the first appearance of regenerating axons in the grafts. Application of GDNF outside the graft did not induce Schwann cell infiltration nor axon regeneration into the graft. Application of pleiotrophin, a trophic factor which promotes axon regeneration but not Schwann cell migration, did not promote axon infiltration into acellular nerve graft. CONCLUSIONS We conclude that GDNF induced Schwann cell migration and axon regeneration into the acellular nerve graft. Our findings can be of potential clinical value to develop acellular nerve grafting for use in spinal root avulsion injuries.
Collapse
Affiliation(s)
- T-H Chu
- Department of Anatomy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR
| | | | | | | | | | | |
Collapse
|
47
|
Abstract
Cyclical oversupply and non-profitability situations have led to pig industry consolidations in the People's Republic of China, with many smaller farmers leaving the industry. In 2007, pork supply worsened due to outbreaks of 'high fever blue-ear disease', a complex disease issue that includes highly virulent porcine reproductive and respiratory syndrome, porcine circovirus and classical swine fever. Best estimates suggest that 50 million pigs were affected. More recent natural disasters (earthquakes/freezing winters) have also limited pig production in some areas. Overall expansion of the Chinese breeding herd is now continuing at a good pace and is likely to be sufficient to supply the predicted 7% annual increase in demand for pork. High prices of feed ingredients (cereals and soybean) continue to create cost-of-production issues. Authorities have instigated many helpful measures over the past decade, including insurance for farm breeder stock, direct subsidies for farm expansions and breeding programmes, free supplies of some vaccines, and taxation exemptions. Specific challenges remaining include: the high levels of spread, persistence and on-farm impact of key virus infections on single-site farm systems; the variable titre and potency of some local vaccines; the low level of technical capacity in laboratories and the lack of training and expertise among farm staff; and the lack of a distinctive representative voice for pig farmers.
Collapse
Affiliation(s)
- S McOrist
- University of Nottingham, Tai King East Road, Ningbo Higher Education Park, Ningbo 315000, People's Republic of China.
| | | | | |
Collapse
|
48
|
Hall A, Ziadi M, Leech J, Chen S, Burwash I, Renaud J, deKemp R, Haddad H, Mielniczuk L, Yoshinaga K, DaSilva J, Walter O, Guo A, Chen L, Garrard L, Floras J, Beanlands R. 238 Does Short Term Continuous Positive Airway Pressure Alter Myocardial Energetics and Pre-Synaptic Sympathetic Nerve Function in Patients With Heart Failure and Obstructive Sleep Apnea? A Randomized Study. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.225] [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: 11/15/2022] Open
|
49
|
Rajda E, Cocker M, deKemp R, Chow B, Ruddy T, Davies R, Hessian R, Garrard L, Brennan J, Aung M, Guo A, DaSilva J, Beanlands R. 710 Reduced Left Atrial Metabolic Activity in Patients With Atrial Fibrillation is Associated With Worse LV Function. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
50
|
Liu H, Qin YR, Bi J, Guo A, Fu L, Guan XY. Overexpression of matrix metalloproteinase 10 is associated with poor survival in patients with early stage of esophageal squamous cell carcinoma. Dis Esophagus 2011; 25:656-63. [PMID: 22121946 DOI: 10.1111/j.1442-2050.2011.01284.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Matrix metallopeptidase 10 (MMP10) is frequently expressed and correlates closely with metastasis and poor prognosis in various human cancers. However, the significance of MMP10 expression in esophageal squamous cell carcinoma (ESCC) and its role in ESCC progression remains unclear. In this report, upregulation of MMP10 mRNA was detected in 39/60 (65.0%) of primary ESCC tissues compared with their paired nontumor esophageal tissues. Tissue microarray (TMA) study found protein overexpression of MMP10 in 188/239 (78.7%) of primary ESCC tissues but not in their corresponding nontumor esophageal tissues, suggesting that overexpression of MMP10 may play important roles in ESCC development and progression. Although the overexpression of MMP10 was not significantly associated with disease-specific survival rate (P= 0.182) for all tested ESCCs, it was significantly associated with poorer disease-specific survival (P= 0.001) in early stage of ESCCs (I-IIA). In addition, multivariate analysis found that MMP10 expression in tumor tissues was evaluated as a potential independent prognostic factor for early stage ESCC patients. These findings suggest that MMP10 plays an important role in ESCC progression in the early stage, and overexpression of MMP10 in tumor tissues could be used as a potential prognostic marker for patients with early clinical stage of ESCC.
Collapse
Affiliation(s)
- H Liu
- State Key Laboratory of Oncology in Southern China, Cancer Center, Sun Yat-sen University, China
| | | | | | | | | | | |
Collapse
|