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Wang SY, Zhang SJ, Meng HF, Xu HQ, Guo ZX, Yan JF, Gao JL, Niu LN, Wang SL, Jiao K. DPSCs regulate epithelial-T cell interactions in oral submucous fibrosis. Stem Cell Res Ther 2024; 15:113. [PMID: 38650025 PMCID: PMC11036714 DOI: 10.1186/s13287-024-03720-5] [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] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 04/07/2024] [Indexed: 04/25/2024] Open
Abstract
BACKGROUND Oral submucous fibrosis (OSF) is a precancerous lesion characterized by fibrous tissue deposition, the incidence of which correlates positively with the frequency of betel nut chewing. Prolonged betel nut chewing can damage the integrity of the oral mucosal epithelium, leading to chronic inflammation and local immunological derangement. However, currently, the underlying cellular events driving fibrogenesis and dysfunction are incompletely understood, such that OSF has few treatment options with limited therapeutic effectiveness. Dental pulp stem cells (DPSCs) have been recognized for their anti-inflammatory and anti-fibrosis capabilities, making them promising candidates to treat a range of immune, inflammatory, and fibrotic diseases. However, the application of DPSCs in OSF is inconclusive. Therefore, this study aimed to explore the pathogenic mechanism of OSF and, based on this, to explore new treatment options. METHODS A human cell atlas of oral mucosal tissues was compiled using single-cell RNA sequencing to delve into the underlying mechanisms. Epithelial cells were reclustered to observe the heterogeneity of OSF epithelial cells and their communication with immune cells. The results were validated in vitro, in clinicopathological sections, and in animal models. In vivo, the therapeutic effect and mechanism of DPSCs were characterized by histological staining, immunohistochemical staining, scanning electron microscopy, and atomic force microscopy. RESULTS A unique epithelial cell population, Epi1.2, with proinflammatory and profibrotic functions, was predominantly found in OSF. Epi1.2 cells also induced the fibrotic process in fibroblasts by interacting with T cells through receptor-ligand crosstalk between macrophage migration inhibitory factor (MIF)-CD74 and C-X-C motif chemokine receptor 4 (CXCR4). Furthermore, we developed OSF animal models and simulated the clinical local injection process in the rat buccal mucosa using DPSCs to assess their therapeutic impact and mechanism. In the OSF rat model, DPSCs demonstrated superior therapeutic effects compared with the positive control (glucocorticoids), including reducing collagen deposition and promoting blood vessel regeneration. DPSCs mediated immune homeostasis primarily by regulating the numbers of KRT19 + MIF + epithelial cells and via epithelial-stromal crosstalk. CONCLUSIONS Given the current ambiguity surrounding the cause of OSF and the limited treatment options available, our study reveals that epithelial cells and their crosstalk with T cells play an important role in the mechanism of OSF and suggests the therapeutic promise of DPSCs.
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Affiliation(s)
- S Y Wang
- Department of Stomatology, Tangdu Hospital & State Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration & School of Stomatology, The Fourth Military Medical University, 169 West Changle Road, Xincheng District, 710032, Xi'an, Shaanxi, P. R. China
| | - S J Zhang
- State Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, 169 West Changle Road, Xincheng District, 710032, Xi'an, Shaanxi, P. R. China
| | - H F Meng
- Beijing SH Bio-tech Co., 100071, Beijing, P.R. China
| | - H Q Xu
- Department of Stomatology, Tangdu Hospital & State Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration & School of Stomatology, The Fourth Military Medical University, 169 West Changle Road, Xincheng District, 710032, Xi'an, Shaanxi, P. R. China
- The College of Life Science, Northwest University, 710032, Xi'an, Shaanxi, P.R. China
| | - Z X Guo
- Department of Stomatology, Tangdu Hospital & State Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration & School of Stomatology, The Fourth Military Medical University, 169 West Changle Road, Xincheng District, 710032, Xi'an, Shaanxi, P. R. China
| | - J F Yan
- Department of Stomatology, Tangdu Hospital & State Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration & School of Stomatology, The Fourth Military Medical University, 169 West Changle Road, Xincheng District, 710032, Xi'an, Shaanxi, P. R. China
| | - J L Gao
- State Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, 169 West Changle Road, Xincheng District, 710032, Xi'an, Shaanxi, P. R. China
| | - L N Niu
- State Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, 169 West Changle Road, Xincheng District, 710032, Xi'an, Shaanxi, P. R. China.
| | - S L Wang
- Beijing Laboratory of Oral Health, Capital Medical University, 10 Xitoutiao, Fengtai District, 100069, Beijing, P.R. China.
- Laboratory of Homeostatic Medicine, School of Medicine, Southern University of Science and Technology, No. 1088 Xueyuan Avenue, Nanshan District, 518055, Shenzhen, P.R. China.
| | - K Jiao
- Department of Stomatology, Tangdu Hospital & State Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration & School of Stomatology, The Fourth Military Medical University, 169 West Changle Road, Xincheng District, 710032, Xi'an, Shaanxi, P. R. China.
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2
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Gao JL, Davis MJ, Dagrosa AT, Momtahen S. Concurrent Langerhans cell histiocytosis and acute myeloid leukemia: A rare presentation of a rare case. J Cutan Pathol 2024; 51:276-279. [PMID: 38158642 DOI: 10.1111/cup.14570] [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: 05/04/2023] [Revised: 11/13/2023] [Accepted: 11/25/2023] [Indexed: 01/03/2024]
Abstract
A 72-year-old woman with no significant past medical history was admitted to the hospital for new-onset of leukocytosis with neutropenia, anemia, and thrombocytopenia, as well as a pruritic skin eruption. She was found to have acute myeloid leukemia (AML) with myelomonocytic differentiation. Her skin eruption consisted of widespread hemorrhagic crusted papules on the scalp and trunk. A skin biopsy was performed, which revealed a proliferation of mononuclear cells in the dermis with prominent epidermotropism and positive expression of CD1a and langerin (CD207), supporting a diagnosis of Langerhans cell histiocytosis (LCH). LCH is an uncommon proliferative disorder of activated Langerhans cells, which generally presents in children. In adults, it is exceptionally infrequent. Associated malignancies and rare reports of AML developing in subsequent years after an initial presentation of LCH have been described. Here we present an unusual concurrent presentation of LCH and AML in an adult.
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Affiliation(s)
- Julia L Gao
- Department of Medicine, Dartmouth Health, Lebanon, New Hampshire, USA
| | - Matthew J Davis
- Department of Dermatology, Dartmouth Health, Lebanon, New Hampshire, USA
| | - Alicia T Dagrosa
- Department of Dermatology, Dartmouth Health, Lebanon, New Hampshire, USA
| | - Shabnam Momtahen
- Department of Pathology, Dartmouth Health, Lebanon, New Hampshire, USA
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3
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Gao JL, Streed CG, Thompson J, Dommasch ED, Peebles JK. Androgenetic alopecia in transgender and gender diverse populations: A review of therapeutics. J Am Acad Dermatol 2023; 89:774-783. [PMID: 34756934 DOI: 10.1016/j.jaad.2021.08.067] [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: 03/22/2021] [Revised: 08/14/2021] [Accepted: 08/17/2021] [Indexed: 10/20/2022]
Abstract
Androgenetic alopecia (AGA) management is a significant clinical and therapeutic challenge for transgender and gender-diverse (TGD) patients. Although gender-affirming hormone therapies affect hair growth, there is little research about AGA in TGD populations. After reviewing the literature on approved treatments, off-label medication usages, and procedures for treating AGA, we present treatment options for AGA in TGD patients. The first-line treatments for any TGD patient include topical minoxidil 5% applied to the scalp once or twice daily, finasteride 1 mg oral daily, and/or low-level laser light therapy. Spironolactone 200 mg daily is also first-line for transfeminine patients. Second-line options include daily oral minoxidil dosed at 1.25 or 2.5 mg for transfeminine and transmasculine patients, respectively. Topical finasteride 0.25% monotherapy or in combination with minoxidil 2% solution are second-line options for transmasculine and transfeminine patients, respectively. Other second-line treatments for any TGD patient include oral dutasteride 0.5 mg daily, platelet-rich plasma, or hair restoration procedures. After 6-12 months of treatment, AGA severity and treatment progress should be assessed via scales not based on sex; eg, the Basic and Specific Classification or the Bouhanna scales. Dermatologists should coordinate care with the patient's primary gender-affirming clinician(s) so that shared knowledge of all medications exists across the care team.
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Affiliation(s)
- Julia L Gao
- Fenway Institute, Fenway Health, Boston, Massachusetts; Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts; George Washington University School of Medicine & Health Sciences, Washington, District of Columbia.
| | - Carl G Streed
- Section of General Internal Medicine, Boston University School of Medicine, Boston, Massachusetts; Center for Transgender Medicine and Surgery, Boston Medical Center, Boston, Massachusetts
| | | | - Erica D Dommasch
- Fenway Institute, Fenway Health, Boston, Massachusetts; Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts
| | - Jon Klinton Peebles
- Department of Dermatology, Kaiser-Permanente Mid-Atlantic Permanente Medical Group, Rockville, Maryland
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4
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Gao JL, Sanz J, Tan N, King DS, Modest AM, Dommasch ED. Androgenetic alopecia incidence in transgender and gender diverse populations: A retrospective comparative cohort study. J Am Acad Dermatol 2023; 89:504-510. [PMID: 36780950 DOI: 10.1016/j.jaad.2023.01.037] [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: 08/25/2022] [Revised: 12/30/2022] [Accepted: 01/23/2023] [Indexed: 02/13/2023]
Abstract
BACKGROUND Androgenetic alopecia (AGA) is a significant challenge for many transgender and gender diverse (TGD) patients, but the rate of AGA among TGD patients receiving gender-affirming hormone therapy (GAHT) compared to cisgender patients has not yet been studied on a large scale. OBJECTIVE We examined the incidence of AGA among TGD patients receiving GAHT compared to cisgender patients. METHODS Retrospective cohort study using electronic health records from 37,826 patients seen at Fenway Health between August 1, 2014, and August 1, 2020. Crude and adjusted incidence rate ratios (aIRR) for AGA were calculated using Poisson regression. RESULTS TGD patients receiving masculinizing GAHT had aIRR 2.50, 95% CI 1.71-3.65 and 1.30, 95% CI 0.91-1.86 compared to cisgender women and cisgender men, respectively. The rate of AGA for TGD patients receiving feminizing GAHT was not significantly different compared to cisgender men but was significantly increased compared to cisgender women (aIRR 1.91, 95% CI 1.25-2.92). LIMITATIONS Inability to determine causation and limited generalizability. CONCLUSION TGD patients receiving masculinizing GAHT have 2.5 times the rate of AGA compared to cisgender women, whereas TGD patients on feminizing GAHT did not have a significantly increased rate of AGA compared to cisgender men.
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Affiliation(s)
- Julia L Gao
- Fenway Institute, Fenway Health, Boston, Massachusetts; Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts; Department of Medicine, Dartmouth Health, Lebanon, New Hampshire; George Washington University School of Medicine and Health Sciences, Washington, DC.
| | - Jessika Sanz
- Fenway Institute, Fenway Health, Boston, Massachusetts; Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts; New York Institute College of Osteopathic Medicine, Jonesboro, Arkansas
| | - Nicholas Tan
- Fenway Institute, Fenway Health, Boston, Massachusetts; Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts; Case Western University School of Medicine, Cleveland, Ohio
| | - Dana S King
- Fenway Institute, Fenway Health, Boston, Massachusetts
| | - Anna M Modest
- Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts
| | - Erica D Dommasch
- Fenway Institute, Fenway Health, Boston, Massachusetts; Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts.
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5
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Zhao QW, Chen SH, Li XM, Gao JL, Fu H, Dai JM. [The mediating effect of resilience on anxiety and subjective well-being in occupational population]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:434-438. [PMID: 37400404 DOI: 10.3760/cma.j.cn121094-20211206-00603] [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] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Objective: To explore the current situation of anxiety, subjective well-being in occupational population and the mediating effect of resilience. Methods: From March 24th to 26th, 2020, a cross-sectional survey was conducted among occupational population aged ≥18 years old using online questionnaires. A total of 2134 valid questionnaires were obtained, with respondents from 30 provinces, autonomous regions, and municipalities directly under the Central Government. Their general demographic data, subjective well-being, anxiety, and resilience were collected. Pearson χ(2) test and Spearson correlation analysis were used for data analysis, and structural equation model was used to explore the mediating effect of resilience on anxiety and subjective well-being. Results: The age of the respondents ranged from 18 to 60 years old, with an average age of (31.19±7.09) years old, including 1075 (50.4%) women and 1059 (49.6%) men. The positive rates of low subjective well-being and anxiety were 46.5% (992/2134) and 28.4% (607/2134), respectively. Anxiety scores were significantly negatively correlated with subjective well-being scores and resilience scores (r(s)=-0.52, -0.41, P<0.05), while resilience was significantly positively correlated with subjective well-being (r(s)=0.32, P<0.05). Structural equation models showed that anxiety had a negative predictive effect on subjective well-being, while resilience not only had a positive predictive effect on subjective well-being, but also played a mediating role between anxiety and subjective well-being, with a mediating effect of 9.9%. Conclusion: The situation of anxiety and well-being in the occupational population is still not optimistic, and resilience has a mediating effect between anxiety and subjective well-being.
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Affiliation(s)
- Q W Zhao
- Department of Preventive Medicine and Health Education, School of Public Health, Fudan University, Shanghai 200032, China
| | - S H Chen
- Department of Preventive Medicine and Health Education, School of Public Health, Fudan University, Shanghai 200032, China
| | - X M Li
- Department of Preventive Medicine and Health Education, School of Public Health, Fudan University, Shanghai 200032, China
| | - J L Gao
- Department of Preventive Medicine and Health Education, School of Public Health, Fudan University, Shanghai 200032, China
| | - H Fu
- Department of Preventive Medicine and Health Education, School of Public Health, Fudan University, Shanghai 200032, China
| | - J M Dai
- Department of Preventive Medicine and Health Education, School of Public Health, Fudan University, Shanghai 200032, China
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6
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Gao JL, Oakley A. Teledermatology for Enhancing Skin Cancer Diagnosis and Management: Retrospective Chart Review. JMIR Dermatol 2023; 6:e45430. [PMID: 37632911 PMCID: PMC10335328 DOI: 10.2196/45430] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 04/20/2023] [Indexed: 08/28/2023] Open
Abstract
BACKGROUND Skin cancer rates are at all-time highs, but the shortage of dermatologists compels patients to seek medical advice from general practitioners. A new referral pathway called the Suspected Skin Cancer (SSC) service was established to provide general practitioners in Waikato, New Zealand, with rapid diagnosis and treatment advice for lesions suspicious for skin cancer. OBJECTIVE The aim of this study was to assess the quantity, quality, and characteristics of referrals to the SSC teledermatology service during its first 6 months. METHODS A retrospective chart review of all referrals sent to the SSC teledermatology service during the first 6 months of its operation was conducted. Time to advice, diagnoses, diagnostic discordance, adherence to advice, and time to treatment were recorded. Diagnostic discordance between general practitioners, dermatologists, and pathologists was calculated. RESULTS The SSC service received 340 referrals for 402 lesions. Dermatologists diagnosed 256 (63.7%) of these lesions as benign; 56 (13.9%) were histologically confirmed as malignant, including 19 (4.7%) melanomas. The overall discordance between referrer and dermatologist on specific and broad (ie, benign or malignant) diagnoses for 402 lesions was 47% and 26% (κ=0.58, SD 0.07), respectively; 44% and 26% (κ=0.61, SD 0.15) between referrer and pathologist; and 18% and 12% (κ=0.82, SD 0.12) between dermatologist and pathologist. The mean time between referral submission and receiving advice was 1.02 days. The average time to action (eg, excision) was 64.8 days. CONCLUSIONS An electronic referral system can be an effective form of teledermatology for providing prompt diagnosis and management advice for benign and malignant skin lesions.
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Affiliation(s)
- Julia L Gao
- Department of Medicine, Dartmouth Health, Lebanon, NH, United States
| | - Amanda Oakley
- Waikato Clinical Campus, University of Auckland, Hamilton, New Zealand
- Department of Dermatology, Te Whatu Ora Waikato, Hamilton, New Zealand
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Gao JL, Kamal K, Peebles K. Equity for Sexual and Gender Diverse Persons in Medicine and Dermatology. Dermatol Clin 2023; 41:299-308. [PMID: 36933919 DOI: 10.1016/j.det.2022.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Dermatologists can play a key role in improving health equity for sexual and gender diverse (SGD) patients through cultivating awareness of how their patients' sexual and gender identity may affect their skin health, developing SGD-inclusive curricula and safe spaces in medical training, promoting workforce diversity, practicing with intersectionality in mind, and engaging in advocacy for their patients, whether it be through daily practice, legislative and public policy initiatives, or research.
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Affiliation(s)
- Julia L Gao
- The Fenway Institute, Fenway Health, Boston, MA, USA; Department of Dermatology, Beth Israel Deaconess Medical Center, 1340 Boylston Street, Boston, MA 02215, USA; George Washington University School of Medicine & Health Sciences, Washington, DC, USA; Dartmouth-Hitchcock Medical Center, One Medical Center Drive, Lebanon, NH 03766, USA.
| | - Kanika Kamal
- Harvard Medical School, Harvard University, 25 Shattuck Street, Boston, MA 02115, USA
| | - Klint Peebles
- Department of Dermatology, Kaiser-Permanente Mid-Atlantic Permanente Medical Group, 1221 Mercantile Lane, Largo, MD 20774, USA
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8
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Sanz J, Gao JL, King DS, Modest AM, Dommasch ED. Prevalence of rosacea in transgender and gender-diverse populations: a retrospective cohort study. Br J Dermatol 2023; 188:304-306. [PMID: 36763873 DOI: 10.1093/bjd/ljac041] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 09/26/2022] [Accepted: 10/24/2022] [Indexed: 01/22/2023]
Abstract
Hormones have been shown to affect the pathophysiology of rosacea, however, the prevalence of rosacea in transgender and gender diverse (TGD) patients on gender affirming hormone therapy (GAHT) has never been studied. Our retrospective cohort study showed a significantly decreased prevalence TGD patients on feminizing GAHT compared to cisgender men, women, and TGD not on GAHT. Our results suggest that estrogen and/or anti-androgenetic agents may play a protective role in the development or course of rosacea.
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Affiliation(s)
- Jessika Sanz
- The Fenway Institute, Fenway Health, Boston, MA, USA
- Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, MA, USA
- New York Institute College of Osteopathic Medicine, Jonesboro, AR, USA
| | - Julia L Gao
- George Washington University School of Medicine & Health Sciences, Washington, DC, USA
| | - Dana S King
- The Fenway Institute, Fenway Health, Boston, MA, USA
| | - Anna M Modest
- Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, MA, USA and
- Harvard Medical School, Boston, MA, USA
| | - Erica D Dommasch
- The Fenway Institute, Fenway Health, Boston, MA, USA
- Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
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Gao JL, Rogers GF, Myseros JS, Habeshian KA. Facial cleft presenting as a congenital facial papule. Pediatr Dermatol 2022; 39:990-991. [PMID: 35677994 DOI: 10.1111/pde.15059] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 05/15/2022] [Indexed: 11/27/2022]
Abstract
Tessier number 3 craniofacial clefts are a rare congenital deformity of the oronasoocular region with variable severity, most often with serious impacts on appearance and function due to involvement of the bone and soft tissue. However, they can occasionally manifest mildly as a skin-colored congenital facial papule present with subtle anatomic anomalies and signs of deeper involvement, such as crusting and oozing. Recognizing that a congenital facial papule, including non-midline lesions, may be the presenting sign of an underlying developmental anomaly is important to avoid missing the diagnosis of a more extensive underlying congenital defect. We present a rare case of a forme fruste variant of a Tessier number 3 craniofacial cleft to raise awareness of its presentation and advise initial management in hopes of improving outcomes.
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Affiliation(s)
- Julia L Gao
- George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, United States
| | - Gary F Rogers
- George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, United States.,Division of Plastic Surgery, Children's National Health System, Washington, District of Columbia, United States
| | - John S Myseros
- George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, United States.,Division of Neurosurgery, Children's National Health System, Washington, District of Columbia, United States
| | - Kaiane A Habeshian
- Department of Dermatology, George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, United States.,Division of Dermatology, Children's National, Washington, District of Columbia, United States
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10
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Gao JL, King DS, Modest AM, Dommasch ED. Acne risk in transgender and gender diverse populations: A retrospective, comparative cohort study. J Am Acad Dermatol 2022; 87:1198-1200. [PMID: 35283245 DOI: 10.1016/j.jaad.2022.03.013] [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] [Received: 09/23/2021] [Revised: 03/03/2022] [Accepted: 03/03/2022] [Indexed: 10/31/2022]
Affiliation(s)
- Julia L Gao
- Fenway Institute, Fenway Health, Boston, Massachusetts; Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts; George Washington University School of Medicine & Health Sciences, Washington, District of Columbia.
| | - Dana S King
- Fenway Institute, Fenway Health, Boston, Massachusetts
| | - Anna M Modest
- Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, Massachusetts; Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School, Boston, Massachusetts
| | - Erica D Dommasch
- Fenway Institute, Fenway Health, Boston, Massachusetts; Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts
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11
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Sanz J, Gao JL. 32304 Risk of skin cancer in sexual minority patients compared with heterosexual patients: A retrospective cohort study. J Am Acad Dermatol 2022. [DOI: 10.1016/j.jaad.2022.06.056] [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: 11/30/2022]
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Li HZ, Gao JL, Yao HW. [Current status of research on short-term urogenital function after transanal total mesorectal excision and laparoscopic total mesorectal excision]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:552-557. [PMID: 35754222 DOI: 10.3760/cma.j.cn441530-20211130-00479] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Thanks to the new surgical approach, transanal total mesorectal excision (taTME) has a better operative field exposure than laparoscopic-assisted total mesorectal excision (laTME), especially for male patients with obesity, pelvic stenosis or prostate hypertrophy. Nevertheless, whether the urogenital function and quality of life after taTME are better as compared to laTME requires further study. According to the existing studies, taTME and laTME are not significantly different in symptoms of the urology system for male patients, but some large sample clinical studies show that the incidence of urethral mechanical injury after taTME is higher. Unfortunately, there is no elaboration on that for females. The sexual function of male patients after taTME and laTME is both impaired. The sexual function of male patients will be relieved to different degrees over time, but there is no significant difference. Compared with laTME, taTME shows advantages in the sexual function for female patients. There is no significant difference in short-term urogenital system function between taTME and laTME at present. As a new surgical approach, the impact on urogenital system function after taTME is acceptable. However, whether there is a significant difference in urogenital function between taTME and laTME needs further research. In addition, functional results still need comprehensive evaluation, and preoperative baseline evaluation also needs to be enhanced. The functional evaluation for male and female should be carried out separately rather than confused. Questionnaire for evaluation of functional results also needs to be verified.
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Affiliation(s)
- H Z Li
- Department of General Surgery, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - J L Gao
- Department of General Surgery, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - H W Yao
- Department of General Surgery, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
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Gao JL, Shoen E, Lipner SR. Inaccuracy of google reverse image searches for diagnosis of melanonychia: a cross-sectional analysis. Int J Dermatol 2021; 61:e417-e420. [PMID: 34432292 DOI: 10.1111/ijd.15826] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 07/14/2021] [Accepted: 07/20/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Julia L Gao
- School of Medicine & Health Sciences, George Washington University, Washington, DC, USA
| | - Ezra Shoen
- School of Medicine & Health Sciences, George Washington University, Washington, DC, USA
| | - Shari R Lipner
- Department of Dermatology, Weill Cornell Medicine, New York, NY, USA
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Gao JL, An YB, Yao HW, Zhang ZT. [The development process and new requirements of structured training on transanal total mesorectal resection]. Zhonghua Wai Ke Za Zhi 2021; 59:328-331. [PMID: 33915620 DOI: 10.3760/cma.j.cn112139-20200910-00695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Due to the technical difficulty and long learning curve, the benefits of Transanal total mesorectal excision may be obscured by surgical complications that arise from rapid, large-scale development, therefore the surgeons need to receive sufficient training before performing this surgery. At present, a mature structured training system has been formed, but the development of structured training has not met the needs of existing surgical development. In order to standardize the development of transanal total mesorectal excision, the European Society of Colorectal Diseases and 14 international surgical societies recently launched the "International Expert Consensus Guidelines for the Indication, Implementation and Quality Evaluation of Transanal Total Mesorectum Resection". The consensus involves the requirements for trainees, the content and process of training, as well as the evaluation and registration of training results. Training in cadaver is the core of structured training. Beginners should receive repeated training and conduct the surgery under the guidance of instructors.
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Affiliation(s)
- J L Gao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing; Clinical Practice and Research Center for Colorectal Cancer, Capital Medical University, Beijing 100050, China
| | - Y B An
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing; Clinical Practice and Research Center for Colorectal Cancer, Capital Medical University, Beijing 100050, China
| | - H W Yao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing; Clinical Practice and Research Center for Colorectal Cancer, Capital Medical University, Beijing 100050, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing; Clinical Practice and Research Center for Colorectal Cancer, Capital Medical University, Beijing 100050, China
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15
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Gao JL, Thoreson N, Dommasch ED. Navigating iPLEDGE enrollment for transgender and gender-diverse patients: A guide for providing culturally competent care. J Am Acad Dermatol 2021; 85:790-791. [PMID: 33482255 DOI: 10.1016/j.jaad.2021.01.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/04/2021] [Accepted: 01/06/2021] [Indexed: 10/22/2022]
Affiliation(s)
- Julia L Gao
- The Fenway Institute, Fenway Health, Boston, Massachusetts; Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts; George Washington University School of Medicine and Health Sciences, Washington, District of Columbia.
| | - Nick Thoreson
- The Fenway Institute, Fenway Health, Boston, Massachusetts; Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts; Boston University School of Medicine, Boston, Massachusetts
| | - Erica D Dommasch
- The Fenway Institute, Fenway Health, Boston, Massachusetts; Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts
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16
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Chen H, Ye B, Wang L, Wei YX, Dai JM, Gao JL, Wang F, Fu H. [Moderating effect of sense of coherence between occupational stress and depression]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:844-848. [PMID: 32842313 DOI: 10.3760/cma.j.cn112150-20200602-00806] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the moderating effect of sense of coherence in the relationship between occupational stress and depression. Methods: From June to September in 2018, migrant workers were purposively selected from the urban (including office buildings, shopping malls, barber shops or restaurants and other service enterprises) and suburban (including microelectronics, internet, clothing processing and art design and other factories) areas of Shanghai. A total of 3 034 people were investigated and 2 573 valid questionnaires were collected. Patient health questionnaire (PHQ), sense of coherence questionnaire (SOC) and job content questionnaire (JCQ) were used to investigate the levels depression, sense of coherence and occupational stress. Hierarchical regression analysis was used to analyze the moderating effect of sense of coherence on occupational stress and depression, and SPSS PROCESS macro program and Bootstrap method were used to further explore the moderating effect of sense of coherence. Results: The age of total 2 573 migrant workers was (28.24±7.33) years old and 49.79% of them were males. The scores of depression, occupational stress and sense of coherence were 6.67±4.74, 28.45±4.38 and 62.02±10.89, respectively. The depression level was positively correlated with occupational stress (r=0.33, P=0.007), and negatively correlated with sense of coherence (r=-0.53, P=0.003). The hierarchy regression analysis suggested that the interaction between occupational stress and sense of coherence was associated with depression symptom (β=-0.07, P=0.001). Bootstrap analysis showed that occupational stress was not associated with depression symptom with high level of sense of sense of coherence (β=0.04, 95%CI=-0.01-0.10), while occupational stress was associated with depression symptom with low level of sense of sense of coherence (β=0.19, 95%CI=0.14-0.23). Conclusion: The high level of sense of coherence has a moderating effect on the relationship between occupational stress and depressive symptoms, while the low level of sense of coherence does not have this effect.
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Affiliation(s)
- H Chen
- Department of Preventive Medicine, School of Public Health, Fudan University, Shanghai 200032, China
| | - B Ye
- Department of Preventive Medicine, School of Public Health, Fudan University, Shanghai 200032, China
| | - L Wang
- Department of Preventive Medicine, School of Public Health, Fudan University, Shanghai 200032, China
| | - Y X Wei
- Department of Preventive Medicine, School of Public Health, Fudan University, Shanghai 200032, China
| | - J M Dai
- Department of Preventive Medicine, School of Public Health, Fudan University, Shanghai 200032, China
| | - J L Gao
- Department of Preventive Medicine, School of Public Health, Fudan University, Shanghai 200032, China
| | - F Wang
- Department of Political Science, School of Humanities and Social Sciences, Huadong Normal University, Shanghai 200241, China
| | - H Fu
- Department of Preventive Medicine, School of Public Health, Fudan University, Shanghai 200032, China
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17
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Sun R, Gao JL, Chen H, Liu S, Tang ZZ. [CbCYP716A261, a New β-Amyrin 28-Hydroxylase Involved in Conyzasaponin Biosynthesis from Conyza blinii]. Mol Biol (Mosk) 2020; 54:813-825. [PMID: 33009791 DOI: 10.31857/s0026898420050092] [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: 02/08/2020] [Accepted: 03/13/2020] [Indexed: 06/11/2023]
Abstract
Conyzasaponins produced by the traditional Chinese herb Conyza blinii are oleanane-type saponins with a wide range of biological activities. Here, we identified a gene, designated CbCYP716A261, encoding a β-amyrin 28-hydroxylase in conyzasaponins biosynthesis. Ten full putative CYP sequences were isolated from Conyza blinii transcript tags. The CbCYP716A261 gene product was selected as the putative β-amyrin 28-hydroxylase by phylogenetic analysis and transcriptional activity analysis of methyl jasmonate-treated Conyza blinii. To identify the enzymatic activity, we performed enzymatic activity experiments in vitro and in vivo. The HPLC results revealed that CbCYP716A261 catalyzes the hydroxylation of β-amyrin at the C-28 position to yield oleanolic acid. Our findings provide new information about the conyzasaponin biosynthesis pathway and widen the list of isolated β-amyrin 28-hydroxylases.
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Affiliation(s)
- R Sun
- College of Life Science, Sichuan Agricultural University, Ya'an, Sichuan, 625014 China
- College of Biological and Chemical Engineering, Panzhihua University, Panzhihua, Sichuan, 617000 China
| | - J L Gao
- College of Biological and Chemical Engineering, Panzhihua University, Panzhihua, Sichuan, 617000 China
| | - H Chen
- College of Life Science, Sichuan Agricultural University, Ya'an, Sichuan, 625014 China
| | - S Liu
- College of Biological and Chemical Engineering, Panzhihua University, Panzhihua, Sichuan, 617000 China
| | - Z Z Tang
- College of Life Science, Sichuan Agricultural University, Ya'an, Sichuan, 625014 China
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18
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Gao JL, An YB, Wang D, Yao HW, Zhang ZT. [Current status of research on short-term quality of life after sphincteric-saving surgery in rectal cancer patients]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:415-420. [PMID: 32306613 DOI: 10.3760/cma.j.cn.441530-20190525-00219] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Sphincteric-saving surgery (SSS) is currently a hot spot in the treatment of mid-low rectal cancer. Although it preserves the anatomical continuity of the colon and anus, the postoperative functional outcomes and quality of life (QOL) remains to be confirmed. Current studies have shown that quality of life worsens at the first month after surgery, improves within 3-6 months, and stabilizes at about 1 year. The QOL was associated with patient-related factors, tumor-related factors, treatment-related factors and postoperative complications. For patient-related factors, younger patients have worse role function and sexual function but better cognitive function and physical function. Male patients deteriorate significantly in sexual and social function. For tumor-related factors, patients with lower rectal cancer have poorer defecation function. Those with advanced rectal cancer are more likely to suffer from side-effects related to chemotherapy. For treatment-related factors, patients undergoing intersphincteric resection have worse role function, body image and sexual interest. Preventive ileostomy results in the deterioration of role function, body image and sexual interest. Chemotherapy causes taste changes and chest pain. For postoperative complication, patients with anastomotic leakage have worse bowel function and psychological state. Patients with major low anterior resection syndrome and genitourinary dysfunction have worse global health score, social function and role function. In conclusion, short-term quality of life after sphincteric-saving surgery is acceptable. To improve QOL, specific intervention and guidance should be given to patients in this stage. Meanwhile, since many factors influence the quality of life simultaneously, researchers are confused about the questionnaire outcomes. Therefore, more specific and comprehensive tools are needed to evaluate QQL after sphincteric-saving surgery.
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Affiliation(s)
- J L Gao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Y B An
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - D Wang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - H W Yao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
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19
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20
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Shu C, Dai JM, Wu N, Zhang D, Cheng R, Yu HB, Gao JL, Fu H, Sun CX. [Mediating effect of work engagement between job stress and depressive symptoms in State Grid employees]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2018; 36:257-259. [PMID: 29996244 DOI: 10.3760/cma.j.issn.1001-9391.2018.04.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the relationship between job stress, work engagement and depressive symptoms of State Grid workers, and to analyze the mediating effect of work engagement between job stress and depressive symptoms. Methods: A cross-sectional survey was conducted to investigate 845 employees from a State Grid company, using the brief job stress questionnaire, the Patient Health Questionnaire (PHQ-9) and 9-item Utrecht Work Engagement Scale (UWES-9) in March 2017. Results: The average score of work engagement was 4.49±1.42, the mean value of job stress was 1.15±0.33, the average score of depressive symptoms was 6.44±4.30, and the positive rate of depressive symptoms was 66.9%.There was a negative correlation between work engagement with both job stress and depressive symptoms (r=-0.193, -0.397, both P<0.01) , and job stress was positively correlated with depressive symptoms (r=0.260, P<0.01) . The relationship between job stress and depressive symptoms was partly mediated by work engagement, and the mediating effect accounted for 27.2% of the total effect. Conclusion: The work engagement of State Grid staff acts as the mediator between job stress and depressive symptoms, alleviating the depressive symptoms caused by job stress.
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Affiliation(s)
- C Shu
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, Fudan University, Shanghai 200032, China
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21
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Li Z, Dai JM, Zhang D, Shu C, Wu N, Gao JL, Sun CX, Fu H. [Association between Long Working Hours and Job Stress and Depression among Employees from a State Grid Company]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2018; 36:271-274. [PMID: 29996248 DOI: 10.3760/cma.j.issn.1001-9391.2018.04.009] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: This study was to understand the current situation of long working hours and identify the association of long working hours and job stress and depression among workers from one district company of state grid. Methods: The project was done with the cross-sectional survey. All questionnaires were completed by self-administered with informed consent. Employees' weekly working hours was reported by themselves; Using the PHQ-9 scale to assess depression, the JDC Model to evaluate job stress, and SPSS software to analyze data, the single factor chi-square test and multivariate Logistic analysis were performed to identify the association between long working hours and job stress, depression. Results: there were 35.3 percent employees with over 44 hours a week. The association between increasing weekly working hours and job stress and depression was statistically significant. Compared to the reference group (≤44 h) , for those who worked more than 44 hours per week, the odds ratio of job stress was 2.02 (95%CI=1.27-3.23) times increased, and the odds ratio of depression was 1.60 (95%CI=1.01-2.55) times increased, especially for those (≥60 h) , the odds ratio was 3.69 (95%CI=1.45-9.41) and 2.76 (95%CI=1.09-7.03) respectively. Conclusion: Long working hours can significantly increase the risk of job stress and depression among workers. When their weekly working hours exceeds 60, long working hours will be the independent risk factor for both job stress and depression.
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Affiliation(s)
- Z Li
- School of Public Health, Institute of Health Communication, Key Lab of Public Health Safety of Ministry of Education, Collaborative Innovation Center of Health Risk Early Warning and Governance, Fudan University, Shanghai 200032, China
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Liao B, Dong G, Ma Y, Gao JL. Linear-shear-current modified Schrödinger equation for gravity waves in finite water depth. Phys Rev E 2017; 96:043111. [PMID: 29347471 DOI: 10.1103/physreve.96.043111] [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: 03/07/2017] [Indexed: 06/07/2023]
Abstract
A nonlinear Schrödinger equation for the propagation of two-dimensional surface gravity waves on linear shear currents in finite water depth is derived. In the derivation, linear shear currents are assumed to be a linear combination of depth-uniform currents and constant vorticity. Therefore, the equation includes the combined effects of depth-uniform currents and constant vorticity. Next, using the equation, the properties of the modulational instability of gravity waves on linear shear currents are investigated. It is showed that shear currents significantly modify the modulational instability properties of weakly nonlinear waves. Furthermore, the influence of linear shear currents on Peregrine breather which can be seen as a prototype of freak waves is also studied. It is demonstrated that depth-uniform opposing currents can reduce the breather extension in both the time and spatial domain in intermediate water depth, but following currents has the adverse impact, indicating that a wave packets with freak waves formed on following currents contain more hazardous waves in finite water depth. However, the corresponding and coexisting vorticity can counteract the influence of currents. Additionally, if the water depth is deep enough, shear currents have negligible effect on the characteristics of Peregrine breathers.
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Affiliation(s)
- B Liao
- State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China
| | - G Dong
- State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China
| | - Y Ma
- State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China
| | - J L Gao
- School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
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Pang YJ, Chen XH, Zhang JY, Dong Z, Wu SF, Zhang FF, Gao JL. [Prophylactic thyroidectomy in two children indentified RET germline mutations with multiple endocrine neoplasia type 2A]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 52:536-538. [PMID: 28728245 DOI: 10.3760/cma.j.issn.1673-0860.2017.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y J Pang
- Department of Endocrinology, Kailuan General Hospital, North China University of Science and Technology, Tangshan 063000, China
| | - X H Chen
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - J Y Zhang
- Department of Endocrinology, Kailuan General Hospital, North China University of Science and Technology, Tangshan 063000, China
| | - Z Dong
- Department of Endocrinology, Kailuan General Hospital, North China University of Science and Technology, Tangshan 063000, China
| | - S F Wu
- Department of Endocrinology, Kailuan General Hospital, North China University of Science and Technology, Tangshan 063000, China
| | - F F Zhang
- Department of Endocrinology, Kailuan General Hospital, North China University of Science and Technology, Tangshan 063000, China
| | - J L Gao
- Department of ICU, Kailuan General Hospital, North China University of Science and Technology, Tangshan 063000, China
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Pang YJ, Chen XH, Zhang JY, Gao JL. [Clinical treatment of metastatic papillary thyroid carcinoma in cervical lymph nodal with occult primary sites]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:1013-1016. [PMID: 29798166 DOI: 10.13201/j.issn.1001-1781.2017.13.011] [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] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Indexed: 11/12/2022]
Abstract
Objective:To discuss the diagnosis, treatment and prognosis of metastatic papillary thyroid carcinoma in cervical lymph nodal with occult primary sites. Method:The clinical data of 5 patients involved papillary thyroid carcinoma with cervical lymph nodal metastasis with occult primary sites from 2009 to 2015 were analyzed. Result:According to preoperation examinations, two of them only underwent neck lymph node resection and three patients underwent asubtotal or total thyroidectomy plus neck lymph node dissection. All the pathological results showed that there were metastatic papillary thyroid carcinoma in cervical lymph nodal, but the primary sites of thyroid tissue were normal. After 1 to 7 year follow-up, there was no recurrence. Conclusion:Whether to take the thyroidectomy need to be carefully considered thyroidectomy in patients with metastatic papillary thyroid carcinoma in cervical lymph nodal with occult primary sites.
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Affiliation(s)
- Y J Pang
- Department of Endocrinology, Kailuan General Hospital, North China University of Technology, Tangshan, 063000, China
| | - X H Chen
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University
| | - J Y Zhang
- Department of Endocrinology, Kailuan General Hospital, North China University of Technology, Tangshan, 063000, China
| | - J L Gao
- Department of Endocrinology, Kailuan General Hospital, North China University of Technology, Tangshan, 063000, China
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Gao JL, Zhu MY, An N, Fu H. [Workplace social capital and intention to stay among Chinese nurses: a structural equation model]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2017; 35:111-114. [PMID: 28355698 DOI: 10.3760/cma.j.issn.1001-9391.2017.02.007] [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] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Objective: To explore a model that workplace social capital is associated with intention to stay (ITS) in the nursing profession and that this association is partially mediated by organizational commitment, job satisfaction, and job stress among Chinese nurses. Methods: A cross-sectional, observationalstudy was conducted in Shanghai, China between September and December 2014. Two thousandforty-two nurses from 23 healthcare organizations were recruited for the current study using a two-stage sampling process.Intention to stay, workplace social capital, job satisfaction, organizational commitment, and job stress was measured by validated scale. Measured variable path analysis (MVPA) was used to test their hypothesized relationships. Results: There were significant positive direct effects from workplace social capital (β=0.11, P<0.01) , organizational commitment (β=0.81, P<0.01) and job satisfaction (β=0.03, P<0.01) to ITS, and a negative direct effects from job strain to ITS (β=-0.03, P<0.01) . The model explained 84% of the variability in ITS. Additionally, workplace social capital had significant positive direct effects on organizational commitment (β=0.65, P<0.01) , job satisfaction (β=0.44, P<0.01) and negative direct effects on job strain (β=-0.35, P<0.01) . The indirect effect of social capital to ITS was 0.55. Job satisfaction was positively associated with organizational commitment (r=0.47, P<0.01) , and negtively associated with job stress (r=-0.12, P<0.01) . Job stress was negtively associated with organizational commitment (r=-0.20, P<0.01) . Conclusion: This study suggests that greater workplace social capital may lead to higher ITS in nursing primarily by increasing commitment to the nursing occupation and their job satisfaction and by reducing their sense of job stress.
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Affiliation(s)
- J L Gao
- School of Public Health, Fudan University, Shanghai 200032, China
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26
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Pang YJ, Zhang JY, Chen XH, Dong Z, Wu SF, Zhang FF, Gao JL. [An adolescent with Hashimoto's encephalopathy after surgery and ¹³¹I radiotherapy for papillary thyroid carcinoma: one case report]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:235-236. [PMID: 29871232 DOI: 10.13201/j.issn.1001-1781.2017.03.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Indexed: 11/12/2022]
Abstract
Hashimoto's encephalopathy is a rare brain disease. Its etiology is still unknown. In this paper, we reported a 15-year-old female patient underwent total thyroidectomy and lymph node dissection, due to a multifocal papilliferous carcinoma of the right lobus. Forty-two days after surgery, the patient was treated by ¹³¹I radiotherapy in another hospital and begun to have a headache after 48 hours. At last, the patient was diagnosed by HE on the basis of all considerations. She recovered from by i.v. Immunoglobulin. Till now, the patient has not relapsed for more than 4 years follow-up.
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Lu XY, Dai JM, Wu N, Shu C, Gao JL, Fu H. [Association between sense of coherence and occupational stress of workers in modern service industry in Shanghai, China]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:731-736. [PMID: 28043243 DOI: 10.3760/cma.j.issn.1001-9391.2016.10.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Objective: To investigate understand the current status of the sense of coherence and occupational stress in modern service workers, and to analyze the association between occupational stress and the sense of coherence. Methods: From March to April, 2016, 834 modern service workers from 3 companies in Shanghai, China (in air transportation industry, marketing industry, and travel industry) were surveyed by non-ran-dom sampling. The self-completion questionnaires were filled out anonymously given the informed consent of the workers. The occupational stress questionnaire was used to evaluate occupational stress, and the Chinese version of the Sense of Coherence Scale (SOC-13) was used to assess the mental health. Results: The mean score for the sense of coherence of the respondents was 61.54±10.46, and 50.1% of them were self-rated as having occupational stress. There were significant differences in SOC score between groups with different ages, marital status, positions, lengths of service, family per capita monthly income, and weekly work hours (P<0.05). The occupational stress score differed significantly across groups with different marital status, lengths of service, and weekly work hours (P<0.05). The scores for working autonomy, social support, and occupational stress differed significantly between groups with different SOC levels (P<0.05). There were significant differences in SOC score and the distribution of low-SOC respondents between groups with different levels of working autonomy, social support, and occupational stress. High SOC is a protective factor for occupational stress (OR=0.39, 95%CI 0.26~ 0.59). Conclusion: Modern service workers in Shanghai have high SOC and moderate occupational stress. Therefore, improving SOC may reduce occupational stress.
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Affiliation(s)
- X Y Lu
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, Fudan University, Shanghai 200032, China
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Carevic M, Öz H, Fuchs K, Laval J, Schroth C, Frey N, Hector A, Bilich T, Haug M, Schmidt A, Autenrieth SE, Bucher K, Beer-Hammer S, Gaggar A, Kneilling M, Benarafa C, Gao JL, Murphy PM, Schwarz S, Moepps B, Hartl D. CXCR1 Regulates Pulmonary Anti-Pseudomonas Host Defense. J Innate Immun 2016; 8:362-73. [PMID: 26950764 DOI: 10.1159/000444125] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 01/19/2016] [Indexed: 11/19/2022] Open
Abstract
Pseudomonas aeruginosa is a key opportunistic pathogen causing disease in cystic fibrosis (CF) and other lung diseases such as chronic obstructive pulmonary disease (COPD). However, the pulmonary host defense mechanisms regulating anti-P. aeruginosa immunity remain incompletely understood. Here we demonstrate, by studying an airway P. aeruginosa infection model, in vivo bioluminescence imaging, neutrophil effector responses and human airway samples, that the chemokine receptor CXCR1 regulates pulmonary host defense against P. aeruginosa. Mechanistically, CXCR1 regulates anti-Pseudomonas neutrophil responses through modulation of reactive oxygen species and interference with Toll-like receptor 5 expression. These studies define CXCR1 as a novel, noncanonical chemokine receptor that regulates pulmonary anti-Pseudomonas host defense with broad implications for CF, COPD and other infectious lung diseases.
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Affiliation(s)
- M Carevic
- Children's Hospital and Interdisciplinary Center for Infectious Diseases, University of Tx00FC;bingen, Tx00FC;bingen, Germany
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Abstract
We conducted a study to investigate the role of three IL-17 gene single nucleotide polymorphisms (SNP) (rs2275913G>A, rs3748067C>T, and rs763780 T>C) in the development of gastric cancer. A total of 252 patients with gastric cancer and 252 control subjects were collected between May 2012 and May 2014. The SNP genotyping of IL-17A rs2275913G>A and rs3748067C>T and IL-17F rs763780 T>C was performed using the Sequenom MassARRAY platform (Sequenom, San Diego, CA, USA) according to the manufacturer instructions. By conditional regression analysis, individuals carrying the AA and the GA+AA genotypes of rs2275913G>A were correlated with an elevated risk of gastric cancer when compared with those carrying the GG genotype, and the adjusted ORs (95%CIs) were 2.05 (1.13-3.76) for the AA genotype and 1.45 (1.03-2.08) for the GA+AA genotype. In conclusion, our results suggest that the IL-17A rs3748067C>T and IL-17F rs763780 T>C polymorphisms play an important role in the risk of gastric cancer in a Chinese population.
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Affiliation(s)
- W T Qi
- Department of Emergency, Zhengzhou People's Hospital, Zhengzhou, China
| | - J L Gao
- Department of Internal Medicine, Zhengzhou Straight Authority Hospital, Zhengzhou, China
| | - S S Zhang
- Department of Emergency, Zhengzhou People's Hospital, Zhengzhou, China
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30
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Xia WB, Gao JL, Zhang SY, Luo XJ, Chen LY, Xu LQ, Tang SL, Du YW. Optical and magneto-optical anisotropies in large-area two-dimensional Co antidots film. Opt Express 2014; 22:1359-1365. [PMID: 24515142 DOI: 10.1364/oe.22.001359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this work, we investigate the plasmon-induced optical and magneto-optical anisotropies in the large-area square-ordered Co antidots film. It shows that both the outline of reflectivity spectrum and Kerr spectrum are significantly modified by surface plasmon polarition (SPP) resonances. Moreover, the magnitude of Kerr angle reaches to about 10 minutes at the azimuthal angle 45°, which is over 3 times of that of pure Co film. These phenomena are attributed to the SPP resonances with different diffraction orders of reciprocal lattice vectors.
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31
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Gao JL, Cheung RTF, Chan YS, Chu LW, Lee TMC. Increased prospective memory interference in normal and pathological aging: different roles of motor and verbal processing speed. Neuropsychol Dev Cogn B Aging Neuropsychol Cogn 2012; 20:80-100. [PMID: 22486785 DOI: 10.1080/13825585.2012.672948] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
This is a study on prospective memory (PM) and the PM interference effect in normal and pathological aging. One hundred and seven subjects, including 41 healthy young adults, 40 non-demented older adults and 26 patients with mild Alzheimer's disease (AD) participated in this study using a laboratory event-based PM task. PM task performance was comparable between the non-demented older and young adults, but impaired in the AD patients. The PM interference effect increased progressively from the healthy young adults, the non-demented older adults, to the AD patients. Path analysis revealed that the possible mechanism mediating the increased PM interference was the slow motor processing speed in normal aging, while it was the slow verbal speed in pathological aging. It is suggested that different neuropsychological mechanisms may underpin the affected performance of PM task in normal and pathological aging.
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Affiliation(s)
- J L Gao
- Department of Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong
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32
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Gao JL, Cheung RTF, Lee TMC, Chan YS, Chu LW. Different neural correlates of speed and accuracy in choice response time task: VBM study on groups of the young, the elderly and the demented. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)70661-5] [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] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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33
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Gao JL, Leung KSY, Wang YT, Lai CM, Li SP, Hu LF, Lu GH, Jiang ZH, Yu ZL. Qualitative and quantitative analyses of nucleosides and nucleobases in Ganoderma spp. by HPLC–DAD-MS. J Pharm Biomed Anal 2007; 44:807-11. [PMID: 17459643 DOI: 10.1016/j.jpba.2007.03.012] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2006] [Revised: 03/16/2007] [Accepted: 03/16/2007] [Indexed: 11/16/2022]
Abstract
A high-performance liquid chromatography-diode array detector-mass spectrometry (HPLC-DAD-MS) analytical method was developed for detection of the nucleosides and nucleobases in two species of Lingzhi, the dried sporophore of Ganoderma lucidum and G. sinense. The method, combining advantages of both DAD and MS, was successfully used to qualitatively identify for six nucleosides namely, adenosine, cytidine, guanosine, inosine, thymidine, uridine and five nucleobases namely, adenine, guanine, hypoxanthine, thymine and uracil in Lingzhi samples. Quantitative analyses showed that uridine was the most abundant nucleoside in these Lingzhi samples and the contents of nine target analytes were found to be different in pileus and stipes of the fruiting bodies and among the different species of G. spp. The established method might apply as an alternative approach for the quality assessment of Lingzhi.
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Affiliation(s)
- J L Gao
- Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau, China
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34
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Hu LF, Li SP, Cao H, Liu JJ, Gao JL, Yang FQ, Wang YT. GC-MS fingerprint of Pogostemon cablin in China. J Pharm Biomed Anal 2005; 42:200-6. [PMID: 16242880 DOI: 10.1016/j.jpba.2005.09.015] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2005] [Revised: 09/05/2005] [Accepted: 09/06/2005] [Indexed: 11/20/2022]
Abstract
Pogostemon cablin, originating in Malaysia and India, is cultivated in southern China including Guangdong and Hainan Province, which was called GuangHuoXiang to differentiate it from the HuoXiang of the north, the species Agastache rugosa, that it resembles. Essential oil of P. cablin mainly contributes to the pharmacological activities and the therapeutic properties of the essential oils are directly correlated with their qualitative and quantitative composition. For controlling the quality, standard fingerprint of P. cablin collected from different regions was developed by using GC-MS. Nine compounds including beta-patchoulene, caryophyllene, alpha-guaiene, seychellene, beta-guaiene, delta-guaiene, spathulenol, patchouli alcohol and pogostone were identified among 10 main peaks in P. cablin. Hierarchical clustering analysis based on characteristics of 10 investigated peaks in GC profiles showed that 18 samples were divided into three main clusters, patchouliol-type, pogostone-type and an interim-type, which was the one between the two chemotypes. The simulative mean chromatogram for the three types P. cablin was generated using the Computer Aided Similarity Evaluation System. The fingerprint can help to distinguish the substitute or adulterant, and further assess the differences of P. cablin grown in various areas of China.
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Affiliation(s)
- L F Hu
- Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China
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35
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Liang TS, Gao JL, Fatemi O, Lavigne M, Leto TL, Murphy PM. The endogenous opioid spinorphin blocks fMet-Leu-Phe-induced neutrophil chemotaxis by acting as a specific antagonist at the N-formylpeptide receptor subtype FPR. J Immunol 2001; 167:6609-14. [PMID: 11714831 DOI: 10.4049/jimmunol.167.11.6609] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Spinorphin is an endogenous heptapeptide (leucylvalylvalyltyrosylprolyltryptophylthreonine), first isolated from bovine spinal cord, whose sequence matches a conserved region of beta-hemoglobin. Also referred to as LVV-hemorphin-4 and a member of the nonclassical opioid hemorphin family, spinorphin inhibits enkephalin-degrading enzymes and is analgesic. Recently, spinorphin was reported to block neutrophil activation induced by the chemotactic N-formylpeptide N-formylmethionylleucylphenylalanine (fMLF), suggesting a potential role as an endogenous negative regulator of inflammation. Here we use both gain- and loss-of-function genetic tests to identify the specific mechanism of spinorphin action on neutrophils. Spinorphin induced calcium flux in normal mouse neutrophils, but was inactive in neutrophils from mice genetically deficient in the fMLF receptor subtype FPR (N-formylpeptide receptor). Consistent with this, spinorphin induced calcium flux in human embryonic kidney 293 cells transfected with mouse FPR, but had no effect on cells expressing the closely related fMLF receptor subtype FPR2. Despite acting as a calcium-mobilizing agonist at FPR, spinorphin was a weak chemotactic agonist and effectively blocked neutrophil chemotaxis induced by fMLF at concentrations selective for FPR. Spinorphin did not affect mouse neutrophil chemotaxis induced by concentrations of fMLF that selectively activate FPR2. Thus, spinorphin blocks fMLF-induced neutrophil chemotaxis by acting as a specific antagonist at the fMLF receptor subtype FPR.
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MESH Headings
- Animals
- Cell Line
- Chemotaxis, Leukocyte/drug effects
- Chemotaxis, Leukocyte/immunology
- Humans
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- N-Formylmethionine Leucyl-Phenylalanine/antagonists & inhibitors
- N-Formylmethionine Leucyl-Phenylalanine/metabolism
- N-Formylmethionine Leucyl-Phenylalanine/pharmacology
- Neutrophils/drug effects
- Neutrophils/immunology
- Neutrophils/metabolism
- Oligopeptides/metabolism
- Oligopeptides/pharmacology
- Oligopeptides/physiology
- Opioid Peptides/metabolism
- Opioid Peptides/pharmacology
- Opioid Peptides/physiology
- Receptors, Formyl Peptide
- Receptors, Immunologic/agonists
- Receptors, Immunologic/antagonists & inhibitors
- Receptors, Immunologic/metabolism
- Receptors, Peptide/agonists
- Receptors, Peptide/antagonists & inhibitors
- Receptors, Peptide/metabolism
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Affiliation(s)
- T S Liang
- Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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36
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Sahagun-Ruiz A, Colla JS, Juhn J, Gao JL, Murphy PM, McDermott DH. Contrasting evolution of the human leukocyte N-formylpeptide receptor subtypes FPR and FPRL1R. Genes Immun 2001; 2:335-42. [PMID: 11607790 DOI: 10.1038/sj.gene.6363787] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2001] [Revised: 06/27/2001] [Accepted: 06/27/2001] [Indexed: 11/09/2022]
Abstract
N-formylpeptides are phagocyte chemoattractants that act by binding to two structurally related receptors, FPR (formylpeptide receptor) and FPRL1R (FPR-like-1 receptor), which are encoded by the human genes FPR1 and FPRL1. Single nucleotide polymorphisms (SNPs) in the FPR coding region have been reported and two have been associated with the disease juvenile periodontitis; however, their frequency and linkage relationships are unknown. Here we systematically analyzed polymorphism in the open reading frames of FPR1 and FPRL1 by direct sequencing of cloned alleles from random blood donors from North America. For FPR1 we detected five non-synonymous SNPs and two synonymous SNPs in a sample of 26 chromosomes one each from 17 Caucasian and nine black random blood donors. Although all five non-synonymous SNPs were common in Caucasians, Blacks, and Asians, notable differences in allele frequency were found for each SNP in the different racial groups, suggesting differential selective pressures. We found that the FPR1 polymorphisms are linked in 15 common haplotypes. No polymorphisms were detected in FPRL1 after sampling 44 chromosomes from 36 random blood donors from the same three racial groups. Thus FPR1 and FPRL1, though they originated from a common gene, appear to have undergone markedly different evolutionary events.
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MESH Headings
- Amino Acid Sequence
- Animals
- Base Sequence
- Cloning, Molecular
- Evolution, Molecular
- Gene Frequency
- Haplotypes/genetics
- Humans
- Leukocytes/chemistry
- Mammals/genetics
- Molecular Sequence Data
- Phylogeny
- Polymerase Chain Reaction
- Polymorphism, Restriction Fragment Length
- Polymorphism, Single Nucleotide/genetics
- Racial Groups/genetics
- Receptors, Formyl Peptide
- Receptors, Immunologic/chemistry
- Receptors, Immunologic/genetics
- Receptors, Lipoxin
- Receptors, Peptide/chemistry
- Receptors, Peptide/genetics
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Affiliation(s)
- A Sahagun-Ruiz
- Molecular Signaling Section, Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892-1886, USA
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37
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Gao JL, Zhou WH, Yang GD. [Opioid tolerance: a phenomenon of latent hyperalgesia]. Sheng Li Ke Xue Jin Zhan 2001; 32:265-8. [PMID: 12545806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
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38
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Hu JY, Le Y, Gong W, Dunlop NM, Gao JL, Murphy PM, Wang JM. Synthetic peptide MMK-1 is a highly specific chemotactic agonist for leukocyte FPRL1. J Leukoc Biol 2001; 70:155-61. [PMID: 11435499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023] Open
Abstract
Human phagocytic leukocytes express the seven-transmembrane G-protein-coupled receptors formyl peptide receptor (FPR) and FPR-like 1 (FPRL1). MMK-1, a synthetic peptide derived from a random peptide library, is reported to induce calcium mobilization specifically in human FPRL1 gene-transfected cells. However, its actions on human phagocytic leukocytes remain poorly defined. We found that MMK-1 is a potent chemotactic and calcium-mobilizing agonist for human monocytes, neutrophils, and FPRL1-transfected human embryonic kidney (HEK) 293 cells but is inactive in cells transfected with FPR. MMK-1 also activated HEK 293 cells transfected with FPR2, a mouse counterpart of human FPRL1. Furthermore, MMK-1 increased pertussis toxin-sensitive production of inflammatory cytokines in human monocytes. MMK-1 signaling in human phagocytes was completely desensitized by a well-defined FPRL1 agonist, suggesting that FPRL1 is likely a receptor that mediates the action of MMK-1 in primary cells. Since MMK-1 is one of the most potent FPRL1-specific agonists identified so far, it can serve as a modulator of the host defense and a useful agent for further studying the signaling and function of FPRL1.
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MESH Headings
- Animals
- Calcium/metabolism
- Cell Line
- Chemotactic Factors/pharmacology
- Chemotaxis, Leukocyte/drug effects
- Cytokines/biosynthesis
- Humans
- Leukocytes, Mononuclear/drug effects
- Leukocytes, Mononuclear/metabolism
- Mice
- Neutrophils/drug effects
- Neutrophils/metabolism
- Peptides/metabolism
- Peptides/pharmacology
- Rats
- Receptors, Formyl Peptide
- Receptors, Immunologic/agonists
- Receptors, Immunologic/genetics
- Receptors, Immunologic/metabolism
- Receptors, Lipoxin
- Receptors, Peptide/agonists
- Receptors, Peptide/genetics
- Receptors, Peptide/metabolism
- Substrate Specificity
- Transfection
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Affiliation(s)
- J Y Hu
- Laboratory of Molecular Immunoregulation, Division of Basic Sciences, National Cancer Institute-Frederick Cancer Research and Development Center, Frederick, Maryland 21702-1201, USA
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39
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Tiffany HL, Lavigne MC, Cui YH, Wang JM, Leto TL, Gao JL, Murphy PM. Amyloid-beta induces chemotaxis and oxidant stress by acting at formylpeptide receptor 2, a G protein-coupled receptor expressed in phagocytes and brain. J Biol Chem 2001; 276:23645-52. [PMID: 11316806 DOI: 10.1074/jbc.m101031200] [Citation(s) in RCA: 122] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Amyloid-beta, the pathologic protein in Alzheimer's disease, induces chemotaxis and production of reactive oxygen species in phagocytic cells, but mechanisms have not been fully defined. Here we provide three lines of evidence that the phagocyte G protein-coupled receptor (N-formylpeptide receptor 2 (FPR2)) mediates these amyloid-beta-dependent functions in phagocytic cells. First, transfection of FPR2, but not related receptors, including the other known N-formylpeptide receptor FPR, reconstituted amyloid-beta-dependent chemotaxis and calcium flux in HEK 293 cells. Second, amyloid-beta induced both calcium flux and chemotaxis in mouse neutrophils (which express endogenous FPR2) with similar potency as in FPR2-transfected HEK 293 cells. This activity could be specifically desensitized in both cell types by preincubation with a specific FPR2 agonist, which desensitizes the receptor, or with pertussis toxin, which uncouples it from G(i)-dependent signaling. Third, specific and reciprocal desensitization of superoxide production was observed when N-formylpeptides and amyloid-beta were used to sequentially stimulate neutrophils from FPR -/- mice, which express FPR2 normally. Potential biological relevance of these results to the neuroinflammation associated with Alzheimer's disease was suggested by two additional findings: first, FPR2 mRNA could be detected by PCR in mouse brain; second, induction of FPR2 expression correlated with induction of calcium flux and chemotaxis by amyloid-beta in the mouse microglial cell line N9. Further, in sequential stimulation experiments with N9 cells, N-formylpeptides and amyloid-beta were able to reciprocally cross-desensitize each other. Amyloid-beta was also a specific agonist at the human counterpart of FPR2, the FPR-like 1 receptor. These results suggest a unified signaling mechanism for linking amyloid-beta to phagocyte chemotaxis and oxidant stress in the brain.
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MESH Headings
- Amyloid beta-Peptides/pharmacology
- Animals
- Brain/drug effects
- Brain/immunology
- Calcium/metabolism
- Cell Line
- Cells, Cultured
- Chemotactic Factors/pharmacology
- Chemotaxis, Leukocyte
- GTP-Binding Protein alpha Subunits, Gi-Go/metabolism
- Humans
- Mice
- Microglia/immunology
- Neutrophils/immunology
- Oxidative Stress
- Phagocytes/drug effects
- Phagocytes/immunology
- RNA, Messenger/biosynthesis
- Receptors, Formyl Peptide
- Receptors, Immunologic/biosynthesis
- Receptors, Immunologic/genetics
- Receptors, Immunologic/physiology
- Receptors, Peptide/biosynthesis
- Receptors, Peptide/genetics
- Receptors, Peptide/physiology
- Superoxides/metabolism
- Transfection
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Affiliation(s)
- H L Tiffany
- Molecular Signaling and Genetic Immunotherapy Sections, Laboratory of Host Defenses, NIAID, National Institutes of Health, Bethesda, Maryland 20982, USA
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40
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Gao JL, Zeng YM, Zhang LC, Gu J, Liu HF, Zhou WH, Yang GD. NO mediated increase of Fos protein and NMDA1A R mRNA expression in rat spinal cord during morphine withdrawal. Acta Pharmacol Sin 2001; 22:505-11. [PMID: 11747755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
Abstract
AIM To investigate the effects of nitric oxide (NO) on activation of the rat spinal cord neurons during naloxone-precipitated morphine withdrawal. METHODS Fos immunocytochemistry, NADPH-d histochemistry, Fos/NADPH-d double-labeling, intrathecal injection, antisense oligonucleotides (AS-ONs) techniques, and RT-PCR were used. RESULTS Acute administration of naloxone and chronic administration of morphine did not change the expression of Fos protein and NADPH-d positive neurons, and there was no expression of Fos/NADPH-d double-labeled neurons in the spinal cord of rats. Morphine withdrawal increased the expression of Fos protein, NADPH-d positive, and Fos/NADPH-d double-labeled neurons, and they were observed in all the laminae of the rat spinal cord. Intrathecal injection of nNOS antisense oligonucleotides (nNOS-AS) inhibited the increase of Fos protein and NMDA(1A)R mRNA expression in the rat spinal cord during morphine withdrawal and decreased the scores of morphine withdrawal symptoms. The effect of nNOS-AS was greater than that of eNOS-AS. There was no effect in nNOS sense oligonucleotides (nNOS-S) group. CONCLUSION NO mediated the increase of Fos protein and NMDA1A R mRNA expression in the rat spinal cord during morphine withdrawal.
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Affiliation(s)
- J L Gao
- Department of Anesthesiology, Affiliated Hospital of Xuzhou Medical College, Xuzhou 221002, China
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41
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Perretti M, Getting SJ, Solito E, Murphy PM, Gao JL. Involvement of the receptor for formylated peptides in the in vivo anti-migratory actions of annexin 1 and its mimetics. Am J Pathol 2001; 158:1969-73. [PMID: 11395373 PMCID: PMC1892005 DOI: 10.1016/s0002-9440(10)64667-6] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An innovative avenue for anti-inflammatory therapy is inhibition of neutrophil extravasation by potentiating the action of endogenous anti-inflammatory mediators. The glucocorticoid-inducible protein annexin 1 and derived peptides are effective in inhibiting neutrophil extravasation. Here we tested the hypothesis that an interaction with the receptor for formylated peptide (FPR), so far reported only in vitro, could be the mechanism for this in vivo action. In a model of mouse peritonitis, FPR antagonists abrogated the anti-migratory effects of peptides Ac2-26 and Ac2-12, with a partial reduction in annexin 1 effects. A similar result was obtained in FPR (knock-out) KO mice. Binding of annexin 1 to circulating leukocytes was reduced (>50%) in FPR KO mice. In vitro, annexin binding to peritoneal macrophages was also markedly reduced in FPR KO mice. Finally, evidence of direct annexin 1 binding to murine FPR was obtained with HEK-293 cells transfected with the receptor. Overall, these results indicate a functional role for FPR in the anti-migratory effect of annexin 1 and derived peptides.
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MESH Headings
- Animals
- Annexin A1/metabolism
- Annexin A1/pharmacology
- Cell Line
- Chemotaxis, Leukocyte
- Leukocytes/metabolism
- Macrophages, Peritoneal/immunology
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Neutrophils/immunology
- Peptide Fragments/pharmacology
- Peptides
- Peritonitis/immunology
- Receptors, Formyl Peptide
- Receptors, Immunologic/antagonists & inhibitors
- Receptors, Immunologic/genetics
- Receptors, Immunologic/physiology
- Receptors, Peptide/antagonists & inhibitors
- Receptors, Peptide/genetics
- Receptors, Peptide/physiology
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Affiliation(s)
- M Perretti
- William Harvey Research Institute, St. Bartholomew's and The Royal London School of Medicine and Dentistry, London, United Kingdom.
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42
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Khan IA, Murphy PM, Casciotti L, Schwartzman JD, Collins J, Gao JL, Yeaman GR. Mice lacking the chemokine receptor CCR1 show increased susceptibility to Toxoplasma gondii infection. J Immunol 2001; 166:1930-7. [PMID: 11160241 DOI: 10.4049/jimmunol.166.3.1930] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Chemokines are critical for the recruitment of effector immune cells to sites of infection. Mice lacking the chemokine receptor CCR1 have defects in neutrophil trafficking and proliferation. In the present study, we tested the susceptibility of CCR1 knockout mice to infection with the obligate intracellular protozoan parasite Toxoplasma gondii. In comparison with parental wild-type mice, CCR1(-/-) mice exhibited dramatically increased mortality to T. gondii in association with an increased tissue parasite load. No differences were observed in Ag-specific T cell proliferation or in cytokine responses between mutant and wild-type mice. However, the influx of PMNs to the peripheral blood and to the liver were reduced in CCR1(-/-) mice during early infection. Our results suggest that CCR1-dependent migration of neutrophils to the blood and tissues may have a significant impact in controlling parasite replication.
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MESH Headings
- Animals
- Chemokines, CC/metabolism
- Down-Regulation/genetics
- Down-Regulation/immunology
- Female
- Genetic Predisposition to Disease
- Hepatocytes/parasitology
- Hepatocytes/pathology
- Humans
- Immune Tolerance/genetics
- Immunity, Cellular/genetics
- Leukocyte Count
- Liver/parasitology
- Liver/pathology
- Mice
- Mice, Knockout
- Necrosis
- Neutrophils/pathology
- Nitric Oxide/physiology
- Organ Specificity/genetics
- Organ Specificity/immunology
- Receptors, CCR1
- Receptors, Chemokine/deficiency
- Receptors, Chemokine/genetics
- Toxoplasma/immunology
- Toxoplasmosis, Animal/genetics
- Toxoplasmosis, Animal/immunology
- Toxoplasmosis, Animal/mortality
- Toxoplasmosis, Animal/parasitology
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Affiliation(s)
- I A Khan
- Department of Medicine, Dartmouth Medical School, Lebanon, NH 03756, USA.
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43
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Liang TS, Hartt JK, Lu S, Martins-Green M, Gao JL, Murphy PM. Cloning, mRNA distribution, and functional expression of an avian counterpart of the chemokine receptor/HIV coreceptor CXCR4. J Leukoc Biol 2001; 69:297-305. [PMID: 11272281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
The chemokine signaling system, which coordinates the basal and emergency trafficking of leukocytes, presumably coevolved with the hematopoietic system. To study its phylogenetic origins, we used the open reading frame (ORF) of the human chemokine receptor CXCR4 as a genomic probe, since in mammals it is the most highly conserved chemokine receptor known. CXCR4 cross-hybridized to genomic DNA from mouse and chicken, but not zebrafish, Drosophila, or Caenorhabditis elegans. Accordingly, we cloned the corresponding chicken cDNA. The ORF is 359 codons long versus 352 for human CXCR4, and encodes a protein 82% identical to human CXCR4. In a calcium flux assay of receptor function, CHO-K1 cells stably transfected with the chicken cDNA responded specifically to human SDF-1, the specific ligand for CXCR4, but not to a panel of other chemokines tested at 100 nM. SDF-1 activated the cells in a dose-dependent manner (EC50 approximately 5 nM), whereas parental CHO-K1 cells did not respond. The CHO-K1 cell transfectants also bound 125I-SDF-1 specifically. Leukocytes from chicken peripheral blood expressed chCXCR4 mRNA and responded to human SDF-1 in a calcium flux assay with an EC50 similar to that for chCXCR4-transfected CHO cells, suggesting that this response is mediated by native chCXCR4. Analysis of chicken genomic DNA with the chicken cDNA as probe revealed a pattern consistent with a single copy gene, and the absence of any closely related genes. mRNA was detected in brain, bursa, liver, small and large intestine, embryonal fibroblasts, and blood leukocytes, but not in stomach or pancreas. These results, which identify the first functional non-viral, non-mammalian chemokine receptor, suggest that the origins of a functional chemokine system extend at least to birds and suggest that, as in mammals, CXCR4 functions in many avian tissues.
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Affiliation(s)
- T S Liang
- Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA
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44
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Le Y, Gong W, Tiffany HL, Tumanov A, Nedospasov S, Shen W, Dunlop NM, Gao JL, Murphy PM, Oppenheim JJ, Wang JM. Amyloid (beta)42 activates a G-protein-coupled chemoattractant receptor, FPR-like-1. J Neurosci 2001; 21:RC123. [PMID: 11160457 PMCID: PMC6763825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
Amyloid beta (Abeta) is a major contributor to the pathogenesis of Alzheimer's disease (AD). Although Abeta has been reported to be directly neurotoxic, it also causes indirect neuronal damage by activating mononuclear phagocytes (microglia) that accumulate in and around senile plaques. In this study, we show that the 42 amino acid form of beta amyloid peptide, Abeta(42), is a chemotactic agonist for a seven-transmembrane, G-protein-coupled receptor named FPR-Like-1 (FPRL1), which is expressed on human mononuclear phagocytes. Moreover, FPRL1 is expressed at high levels by inflammatory cells infiltrating senile plaques in brain tissues from AD patients. Thus, FPRL1 may mediate inflammation seen in AD and is a potential target for developing therapeutic agents.
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MESH Headings
- Alzheimer Disease/metabolism
- Alzheimer Disease/pathology
- Amyloid beta-Peptides/metabolism
- Amyloid beta-Peptides/pharmacology
- Animals
- Brain/metabolism
- Brain/pathology
- Calcium/metabolism
- Cell Line
- Cell Movement/drug effects
- Chemotaxis/drug effects
- Dose-Response Relationship, Drug
- GTP-Binding Proteins/antagonists & inhibitors
- GTP-Binding Proteins/metabolism
- Gene Expression
- Gene Products, nef/pharmacology
- Humans
- In Situ Hybridization
- Kidney/cytology
- Kidney/drug effects
- Kidney/metabolism
- Monocytes/cytology
- Monocytes/drug effects
- Monocytes/metabolism
- N-Formylmethionine Leucyl-Phenylalanine/pharmacology
- Peptide Fragments/metabolism
- Peptide Fragments/pharmacology
- RNA, Messenger/metabolism
- Rats
- Receptors, Formyl Peptide
- Receptors, Immunologic/genetics
- Receptors, Immunologic/metabolism
- Receptors, Lipoxin
- Receptors, Peptide/genetics
- Receptors, Peptide/metabolism
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/metabolism
- Signal Transduction/drug effects
- Transfection
- Virulence Factors, Bordetella/pharmacology
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Affiliation(s)
- Y Le
- Laboratory of Molecular Immunoregulation, Division of Basic Sciences, International Corporation Frederick, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Maryland 21702, USA
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45
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Domachowske JB, Bonville CA, Gao JL, Murphy PM, Easton AJ, Rosenberg HF. MIP-1alpha is produced but it does not control pulmonary inflammation in response to respiratory syncytial virus infection in mice. Cell Immunol 2000; 206:1-6. [PMID: 11161432 DOI: 10.1006/cimm.2000.1730] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The intent of this study was to compare the cellular and biochemical inflammatory responses of mice infected with the paramyxovirus pathogens respiratory syncytial virus (RSV) and pneumonia virus of mice (PVM). Although RSV is not a natural pathogen of mice, it has been used extensively in mouse models of the human disease, as a limited respiratory infection can be established via intranasal inoculation of virus at high titer. In earlier work, we found that acute infection with the natural rodent pathogen, PVM, elicited a rapid and sustained pulmonary inflammatory response (peak, 1.7 x 10(6) leukocytes/ml BAL fluid) that was dependent on both local production of MIP-1alpha and signaling via its receptor, CCR1. We find here that MIP-1alpha is also produced in response to RSV, although relatively few leukocytes (<200 ml BAL fluid) are recruited to the lungs in response. Further experiments with CCR1-deficient mice confirm the finding that although MIP-1alpha is produced in response to RSV infection, leukocytes do not respond via this pathway. Among the explanations for these findings, we propose that there are other, as yet to be identified proinflammatory mediators elicited in response to PVM (but not in response to RSV) that serve to prime the leukocytes in vivo, thus enabling them to respond to MIP-1alpha signaling via CCR1. Furthermore, the differences in disease pathogenesis seen in response to each of these pneumovirus infections in mice raise questions regarding the extent to which primary RSV infection in mice can be used as a model of primary RSV infection in humans.
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Affiliation(s)
- J B Domachowske
- Department of Pediatrics, State University of New York Upstate Medical Center, Syracuse, New York 13210, USA
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46
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Affiliation(s)
- J L Gao
- Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases-NIH, Bethesda, MD, USA
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47
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Domachowske JB, Bonville CA, Gao JL, Murphy PM, Easton AJ, Rosenberg HF. The chemokine macrophage-inflammatory protein-1 alpha and its receptor CCR1 control pulmonary inflammation and antiviral host defense in paramyxovirus infection. J Immunol 2000; 165:2677-82. [PMID: 10946298 DOI: 10.4049/jimmunol.165.5.2677] [Citation(s) in RCA: 141] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In this work, we explore the responses of specific gene-deleted mice to infection with the paramyxovirus pneumonia virus of mice (PVM). We have shown previously that infection of wild type mice with PVM results in pulmonary neutrophilia and eosinophilia accompanied by local production of macrophage-inflammatory protein-1 alpha (MIP-1 alpha). Here we examine the role of MIP-1 alpha in the pathogenesis of this disease using mice deficient in MIP-1 alpha or its receptor, CCR1. The inflammatory response to PVM in MIP-1 alpha-deficient mice was minimal, with approximately 10-60 neutrophils/ml and no eosinophils detected in bronchoalveolar lavage fluid. Higher levels of infectious virus were recovered from lung tissue excised from MIP-1 alpha-deficient than from fully competent mice, suggesting that the inflammatory response limits the rate of virus replication in vivo. PVM infection of CCR1-deficient mice was also associated with attenuated inflammation, with enhanced recovery of infectious virus, and with accelerated mortality. These results suggest that the MIP-1 alpha/CCR1-mediated acute inflammatory response protects mice by delaying the lethal sequelae of infection.
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Affiliation(s)
- J B Domachowske
- Department of Pediatrics, State University of New York Upstate Medical University, Syracuse, NY, USA
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48
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Hartt JK, Liang T, Sahagun-Ruiz A, Wang JM, Gao JL, Murphy PM. The HIV-1 cell entry inhibitor T-20 potently chemoattracts neutrophils by specifically activating the N-formylpeptide receptor. Biochem Biophys Res Commun 2000; 272:699-704. [PMID: 10860818 DOI: 10.1006/bbrc.2000.2846] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
T-20, a synthetic peptide corresponding to the heptad repeat sequence of HIV-1 gp41, blocks HIV-1 entry by targeting gp41, and is currently in clinical trials as an anti-retroviral agent. We recently reported that in vitro T-20 also functions as a phagocyte chemoattractant and a chemotactic agonist at the phagocyte N-formylpeptide receptor (FPR). Here we show that T-20 is also a potent chemotactic agonist in vitro at a related human phagocyte receptor FPRL1R. To test the relative importance of FPR and FPRL1R in primary cells, we identified the corresponding mouse T-20 receptors, mFPR and FPR2, which are both expressed in neutrophils, and compared T-20 action on neutrophils from wild type and mFPR knockout mice. Surprisingly, although T-20 activates mFPR and FPR2 in transfected cells with equal potency and efficacy in both calcium flux and chemotaxis assays, neutrophils from mFPR knockout mice did not respond to T-20. These results provide genetic evidence that FPR is the major phagocyte T-20 receptor in vivo and point to the potential feasibility of studying T-20 effects on immunity in a mouse model. This may help define the cause of local inflammation after T-20 injection that has recently been reported in Phase I clinical trials.
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MESH Headings
- Animals
- Anti-HIV Agents/adverse effects
- Anti-HIV Agents/chemistry
- Anti-HIV Agents/pharmacology
- Calcium/metabolism
- Calcium Signaling/drug effects
- Cell Line
- Chemotaxis, Leukocyte/drug effects
- Chemotaxis, Leukocyte/immunology
- Dose-Response Relationship, Drug
- Enfuvirtide
- HIV Envelope Protein gp41/adverse effects
- HIV Envelope Protein gp41/chemistry
- HIV Envelope Protein gp41/pharmacology
- Humans
- Inflammation/chemically induced
- Mice
- Mice, Knockout
- Multigene Family/genetics
- N-Formylmethionine Leucyl-Phenylalanine/pharmacology
- Neutrophil Activation/drug effects
- Neutrophil Activation/immunology
- Neutrophils/cytology
- Neutrophils/drug effects
- Neutrophils/immunology
- Neutrophils/metabolism
- Peptide Fragments/adverse effects
- Peptide Fragments/chemistry
- Peptide Fragments/pharmacology
- Receptors, Formyl Peptide
- Receptors, Immunologic/agonists
- Receptors, Immunologic/deficiency
- Receptors, Immunologic/genetics
- Receptors, Immunologic/metabolism
- Receptors, Peptide/agonists
- Receptors, Peptide/deficiency
- Receptors, Peptide/genetics
- Receptors, Peptide/metabolism
- Transfection
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Affiliation(s)
- J K Hartt
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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49
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Liang TS, Wang JM, Murphy PM, Gao JL. Serum amyloid A is a chemotactic agonist at FPR2, a low-affinity N-formylpeptide receptor on mouse neutrophils. Biochem Biophys Res Commun 2000; 270:331-5. [PMID: 10753626 DOI: 10.1006/bbrc.2000.2416] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Serum amyloid A (SAA) is an acute-phase plasma protein and the source of amyloid A, which accumulates in lesions of secondary amyloidosis. SAA can induce phagocyte migration in vitro and in vivo, and is a specific chemotactic agonist for the human low-affinity N-formylpeptide receptor FPRL1R, a G-protein-coupled receptor expressed on phagocytes. Here we show that FPR2, a mouse counterpart of FPRL1R, is also an SAA receptor. SAA selectively induced calcium flux and chemotaxis in mouse PMN, which express FPR2, as well as in HEK 293 cells expressing recombinant FPR2 but not in HEK 293 cells expressing FPR, a closely related high affinity N-formylpeptide receptor. Consistent with this, SAA activity on PMN from FPR+/+ and FPR-/- mice was indistinguishable. Moreover, the prototype N-formylpeptide fMLF desensitized SAA-induced calcium flux in a dose-dependent manner in both mouse neutrophils and HEK 293/FPR2 transfectants. Our results suggest that FPR2 specifically mediates mouse neutrophil migration in response to SAA.
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Affiliation(s)
- T S Liang
- Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland 20892, USA
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50
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Deng X, Ueda H, Su SB, Gong W, Dunlop NM, Gao JL, Murphy PM, Wang JM. A synthetic peptide derived from human immunodeficiency virus type 1 gp120 downregulates the expression and function of chemokine receptors CCR5 and CXCR4 in monocytes by activating the 7-transmembrane G-protein-coupled receptor FPRL1/LXA4R. Blood 1999; 94:1165-73. [PMID: 10438703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023] Open
Abstract
Because envelope gp120 of various strains of human immunodeficiency virus type 1 (HIV-1) downregulates the expression and function of a variety of chemoattractant receptors through a process of heterologous desensitization, we investigated whether epitopes derived from gp120 could mimic the effect. A synthetic peptide domain, designated F peptide, corresponding to amino acid residues 414-434 in the V4-C4 region of gp120 of the HIV-1 Bru strain, potently reduced monocyte binding and chemotaxis response to macrophage inflammatory protein 1beta (MIP-1beta) and stromal cell-derived factor 1alpha (SDF-1alpha), chemokines that use the receptors CCR5 and CXCR4, respectively. Further study showed that F peptide by itself is an inducer of chemotaxis and calcium mobilization in human monocytes and neutrophils. In cross-desensitization experiments, among the numerous chemoattractants tested, only the bacterial chemotactic peptide fMLF, when used at high concentrations, partially attenuated calcium mobilization induced by F peptide in phagocytes, suggesting that this peptide domain might share a 7-transmembrane, G-protein-coupled receptor with fMLF. By using cells transfected with cDNAs encoding receptors that interact with fMLF, we found that F peptide uses an fMLF receptor variant, FPRL1, as a functional receptor. The activation of monocytes by F peptide resulted in downregulation of the cell surface expression of CCR5 and CXCR4 in a protein kinase C-dependent manner. These results demonstrate that activation of FPRL1 on human moncytes by a peptide domain derived from HIV-1 gp120 could lead to desensitization of cell response to other chemoattractants. This may explain, at least in part, the initial activation of innate immune responses in HIV-1-infected patients followed by immune suppression.
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MESH Headings
- Acquired Immunodeficiency Syndrome/blood
- Acquired Immunodeficiency Syndrome/immunology
- Amino Acid Sequence
- Cells, Cultured
- Down-Regulation/drug effects
- GTP-Binding Proteins/immunology
- HIV Envelope Protein gp120/chemistry
- HIV Envelope Protein gp120/immunology
- HIV-1/immunology
- Humans
- Immunosuppression Therapy
- Molecular Sequence Data
- Monocytes/immunology
- Monocytes/virology
- Peptides/immunology
- Peptides/pharmacology
- Receptors, CCR5/biosynthesis
- Receptors, CCR5/immunology
- Receptors, CXCR4/biosynthesis
- Receptors, CXCR4/immunology
- Receptors, Cell Surface/immunology
- Receptors, Formyl Peptide
- Receptors, Immunologic/immunology
- Receptors, Lipoxin
- Receptors, Peptide/immunology
- Signal Transduction/drug effects
- Signal Transduction/immunology
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Affiliation(s)
- X Deng
- Laboratory of Molecular Immunoregulation, Division of Basic Sciences, Intramural Research Support Program, SAIC Frederick, National Cancer Institute-Frederick Cancer Research and Development Center, Frederick, MD, USA
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