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Jin T, Wu L, Wang J, Wang X, He Z, Di W, Yang Q, Wei X. Exosomes derived from diabetic serum accelerate the progression of osteoarthritis. Arch Biochem Biophys 2024; 755:109960. [PMID: 38513770 DOI: 10.1016/j.abb.2024.109960] [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: 11/07/2023] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 03/23/2024]
Abstract
Diabetes mellitus (DM) has been demonstrated to accelerate the progression of osteoarthritis (OA) by largely unknown mechanisms. Studies have shown that DM dysfunctional adipocyte-derived exosomes play a crucial role in the pathogenesis of remote organ functions. The present study aimed to clarify whether and how diabetic adipocyte-derived exosomes mediate the pathological regulation of OA. We found that intraarticular injection of DM serum exosomes in the non-diabetic mice significantly exacerbated OA injury as evidenced by a rough and fractured cartilage surface as well as increased chondrocyte apoptosis, decreased mitochondrial membrane potential (△Ψ) and increased expression of cleaved caspase-3. Mechanistic investigation identified that miR-130b-3p was significantly increased in circulating exosomes derived from DM mice and exosomes derived from HG-treated normal adipocytes, and we demonstrated that transfection of miR-130b-3p mimics significantly exacerbated the mitochondrial function of chondrocytes. Our data also indicated that miR-130b-3p impaired the △Ψ, increased cleaved caspase-3 levels, and decreased the expression of 5'-adenosine monophosphate-activated protein kinase α1 (AMPKα1), Silent mating-type information regulation 2 homolog 1 (SIRT1), and peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α) in chondrocytes. Pharmacologic activation of AMPKα1 using AICAR reversed the △Ψ and catabolic responses in chondrocytes transfected with miR-130b-3p mimics. Moreover, AICAR decreased the effects of miR-130b-3p mimics on chondrocytes transfected with SIRT1-siRNA or PGC-1α-siRNA. The current study demonstrated that adipocyte-derived exosomal miR-130b-3p under DM conditions suppresses mitochondrial function in chondrocytes through targeting the AMPKα1/SIRT1/PGC1-α pathway, thus exacerbating OA injury.
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Affiliation(s)
- Tao Jin
- First Clinical Medical College of Gansu University of Traditional Chinese Medicine, Gansu, 730000, PR China; Department of Orthopedics, Gansu Provincial Hospital, Gansu, 730000, PR China
| | - Lei Wu
- Department of Neurology, Xuanwu Hospital Capital Medical University, Beijing, 100000, PR China
| | - Jizu Wang
- Department of Orthopedics, Gansu Provincial Hospital, Gansu, 730000, PR China
| | - Xingbo Wang
- Department of Orthopedics, Gansu Provincial Hospital, Gansu, 730000, PR China
| | - Zongru He
- Department of Orthopedics, Gansu Provincial Hospital, Gansu, 730000, PR China
| | - Wenfei Di
- Department of Orthopedics, Gansu Provincial Hospital, Gansu, 730000, PR China
| | - Qingshan Yang
- Department of Orthopedics, Gansu Provincial Hospital, Gansu, 730000, PR China.
| | - Xiaodong Wei
- Department of Emergency, Gansu Provincial Hospital, Gansu, 730000, PR China.
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Zou Y, Di W. Robot-assisted close reduction with double screw fixation for the coracoid-process base fracture: A case report. Asian J Surg 2024; 47:1793-1794. [PMID: 38160148 DOI: 10.1016/j.asjsur.2023.12.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 12/15/2023] [Indexed: 01/03/2024] Open
Affiliation(s)
| | - Wenfei Di
- Department of Orthopedics, Gansu Provincial Hospital, Lanzhou, 730000, China.
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Chen F, Di W, Hu YJ, Li CZ, Wang F, Duan H, Liu J, Yao SZ, Zhang YZ, Guo RX, Wang JD, Wang JL, Zhang YQ, Wang M, Lin ZQ, Lang JH. [Evaluation of the efficacy and safety of Nocardia rubra cell wall skeleton immunotherapy for cervical high-risk HPV persistent infection]. Zhonghua Fu Chan Ke Za Zhi 2023; 58:536-545. [PMID: 37474327 DOI: 10.3760/cma.j.cn112141-20230331-00154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
Objective: To evaluate the efficacy and safety of Nocardia rubra cell wall skeleton (Nr-CWS) in the treatment of persistent cervical high-risk human papillomavirus (HR-HPV) infection. Methods: A randomized, double blind, multi-center trial was conducted. A total of 688 patients with clinically and pathologically confirmed HR-HPV infection of the cervix diagnosed in 13 hispital nationwide were recruited and divided into: (1) patients with simple HR-HPV infection lasting for 12 months or more; (2) patients with cervical intraepithelial neoplasia (CIN) Ⅰ and HR-HPV infection lasting for 12 months or more; (3) patients with the same HR-HPV subtype with no CINⅡ and more lesions after treatment with CINⅡ or CIN Ⅲ (CINⅡ/CIN Ⅲ). All participants were randomly divided into the test group and the control group at a ratio of 2∶1. The test group was locally treated with Nr-CWS freeze-dried powder and the control group was treated with freeze-dried powder without Nr-CWS. The efficacy and negative conversion rate of various subtypes of HR-HPV were evaluated at 1, 4, 8, and 12 months after treatment. The safety indicators of initial diagnosis and treatment were observed. Results: (1) This study included 555 patients with HR-HPV infection in the cervix (included 368 in the test group and 187 in the control group), with an age of (44.1±10.0) years. The baseline characteristics of the two groups of subjects, including age, proportion of Han people, weight, composition of HR-HPV subtypes, and proportion of each subgroup, were compared with no statistically significant differences (all P>0.05). (2) After 12 months of treatment, the effective rates of the test group and the control group were 91.0% (335/368) and 44.9% (84/187), respectively. The difference between the two groups was statistically significant (χ2=142.520, P<0.001). After 12 months of treatment, the negative conversion rates of HPV 16, 18, 52, and 58 infection in the test group were 79.2% (84/106), 73.3% (22/30), 83.1% (54/65), and 77.4% (48/62), respectively. The control group were 21.6% (11/51), 1/9, 35.1% (13/37), and 20.0% (8/40), respectively. The differences between the two groups were statistically significant (all P<0.001). (3) There were no statistically significant differences in vital signs (body weight, body temperature, respiration, pulse rate, systolic blood pressure, diastolic blood pressure, etc.) and laboratory routine indicators (blood cell analysis, urine routine examination) between the test group and the control group before treatment and at 1, 4, 8, and 12 months after treatment (all P>0.05); there was no statistically significant difference in the incidence of adverse reactions related to the investigational drug between the two groups of subjects [8.7% (32/368) vs 8.0% (15/187), respectively; χ2=0.073, P=0.787]. Conclusion: External use of Nr-CWS has good efficacy and safety in the treatment of high-risk HPV persistent infection in the cervix.
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Affiliation(s)
- F Chen
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, National Clinical Medical Research Center for Obstetrics and Gynecology, Beijing 100730, China
| | - W Di
- Department of Obstetrics and Gynecology, Renji Hospital, Shanghai Jiao Tong University, Shanghai 200001, China
| | - Y J Hu
- Department of Gynecological Oncology, Tianjin Central Hospital of Gynecology Obstetrics, Tianjin 300199, China
| | - C Z Li
- Department of Gynecology, Shandong Provincial Hospital Affiliated to Shandong First Medical University (Shandong Provincial Hospital), Jinan 250021, China
| | - F Wang
- Department of Gynecology, Shandong Provincial Hospital Affiliated to Shandong First Medical University (Shandong Provincial Hospital), Jinan 250021, China
| | - H Duan
- Gynecological Minimally Invasive Surgery Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100006, China
| | - J Liu
- Department of Obstetrics and Gynecology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100043, China
| | - S Z Yao
- Department of Gynecology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Y Z Zhang
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan 250012, China
| | - R X Guo
- Department of Obstetrics and Gynecology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J D Wang
- Department of Gynecological Oncology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100006, China
| | - J L Wang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, China
| | - Y Q Zhang
- Department of Obstetrics and Gynecology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - M Wang
- Department of Gynecology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Z Q Lin
- Department of Obstetrics and Gynecology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510289, China
| | - J H Lang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, National Clinical Medical Research Center for Obstetrics and Gynecology, Beijing 100730, China
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Zhu L, Lang JH, Ren C, Zhang YL, Chen DJ, Chen L, Chen YL, Cui MH, Di W, Duan H, Hao M, Huang XH, Li PL, Mao YD, Qi HB, Shi HR, Song L, Wang YF, Xu KH, Xu XX, Xue X, Yang HX, Yao SZ, Zhang GN, Zhang HW, Zhang SL, Zhou HM, Zhou YF, Zhu WG. [The Chinese guideline for prevention of pelvic and abdominal adhesions after obstetric and gynecologic surgery (2023 edition)]. Zhonghua Fu Chan Ke Za Zhi 2023; 58:161-169. [PMID: 36935192 DOI: 10.3760/cma.j.cn112141-20220822-00523] [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: 03/21/2023]
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Zhang S, Di W, Wang Y, Shi J, Yin X, Zhang Y, Zhao A, Campo R, Bigatti G. Hysteroscopic myomectomy with the IBS® Intrauterine Bigatti Shaver: A Retrospective Comparative Analysis of the impact of rotational speed and aspiration flow rate. Facts Views Vis Obgyn 2023; 15:53-59. [PMID: 37010335 PMCID: PMC10392109 DOI: 10.52054/fvvo.15.1.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
Background: Myoma removal remains a challenge hysteroscopically including for the “IBS®” Intrauterine Bigatti Shaver technique.
Objective: To evaluate whether the Intrauterine IBS® instrument settings and the myoma size and type are prognostic factors for the complete removal of submucous myomas using this technology.
Materials and methods: This study was conducted at the San Giuseppe University Teaching Hospital Milan, Italy; Ospedale Centrale di Bolzano - Azienda Ospedaliera del Sud Tirolo Bolzano, Italy (Group A) and the Sino European Life Expert Centre-Shanghai Jiao Tong University School of Medicine Affiliated Renji Hospital, Shanghai, China (Group B). In Group A: surgeries were performed between June 2009 and January 2018 on 107 women using an IBS device set to a rotational speed of 2,500 rpm and an aspiration flow rate of 250ml/min. In Group B: surgeries were performed between July 2019 and March 2021 on 84 women with the instrument setting to a rotational speed of 1,500 rpm and aspiration flow rate of 500 ml/min. Further subgroup analysis was performed based on fibroid size:<3 cm and 3-5 cm. Both Groups A and B were similar in terms of patient age, parity, symptoms, myoma type and size. Submucous myomas were classified according to the European Society for Gynaecological Endoscopy classification. All patients underwent a myomectomy with the IBS® under general anaesthesia. The conventional 22 Fr. Bipolar Resectoscope was used in cases requiring conversion to the resection technique. All surgeries were planned, performed and followed by the same surgeon in both institutions.
Main outcome measures: Complete resection rates, total operation time, resection time and used fluid volume.
Results: Complete resection with the IBS® Shaver was seen in 93/107 (86.91%) in Group A versus 83/84 (98.8 %) in Group B (P=0.0021). Five patients (5.8%) in Subgroup A1 (<3 cm) and nine patients (42.9%) in Subgroup A2 (3cm~5cm) could not be finished with the IBS (P<0.001, RR=2.439), while in Group B only one case (8.3%) in Subgroup B2 (3cm~5cm) underwent a conversion to bipolar resectoscope (Group A: 14/107=13.08% vs. Group B: 1/84=1.19%, P=0.0024). For <3cm myomas (subgroup A1 versus B1) there was a statistically significant difference in terms of resection time (7.75±6.363 vs. 17.28±12.19, P<0.001), operation time (17.81 ± 8.18 vs. 28.19 ±17.614, P<0.001) and total amount of fluid used (3365.63 ± 2212.319 ml vs. 5800.00 ± 8422.878 ml, P<0.05) in favour of Subgroup B1. For larger myomas, a statistical difference was only observed for the total operative time (51.00±14.298 min vs. 30.50±12.122 min, P=0.003).
Conclusion: For hysteroscopic myomectomy using the IBS®, 1,500rpm rotational speed and 500ml/min aspiration flow rate are recommended as these settings result in more complete resections compared to the conventional settings. In addition, these settings are associated with a reduction in total operating time.
What is new? Reducing the rotational speed rate from 2500 rpm to 1500 rpm and increasing the aspiration flow rate from 250 ml/min to 500 ml/min improve complete resection rates and reduce operating times.
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Shi J, Zhang Y, Zhang S, Yin X, An D, Zhang J, Cheng J, Wang Y, Zhao A, Di W, Campo R, Bigatti G. Intrauterine Bigatti Shaver (IBS ® ) successful placental remnants removal, after caesarean section for a cervical pregnancy with placenta accreta. Facts Views Vis Obgyn 2022; 14:95-98. [PMID: 35373555 PMCID: PMC9612859 DOI: 10.52054/fvvo.14.1.010] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Placenta accreta located in a caesarean section scar is difficult to remove. The Intrauterine Bigatti Shaver (IBS®) has already been proven to be effective in placental remnant removal. Our case report highlights that the IBS® is also a safe method to remove placental remnants attached to a previous caesarean section scar performed for a cervical pregnancy and associated with placenta accreta.
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Zhou C, Liao L, Sun R, Wang J, Di W, Zhu Y, He Y. Area postrema syndrome as initial manifestation in neuromyelitis optica spectrum disorder patients: A retrospective study. Rev Neurol (Paris) 2020; 177:400-406. [PMID: 33081997 DOI: 10.1016/j.neurol.2020.07.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 02/15/2020] [Revised: 04/16/2020] [Accepted: 07/01/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Area postrema syndrome (APS) is recognized as a core feature in neuromyelitis optica (NMO) diagnosis. Isolated APS can occur at NMO onset and frequently results in a delay of diagnosis, along with devastating secondary neurologic deficits. To date, few studies have characterized APS-onset neuromyelitis optica spectrum disorder (APSO-NMOSD). OBJECTIVE We aimed to describe the clinical and radiologic features of patients with APSO-NMOSD who are initially misdiagnosed in a cohort of patients from Zhengzhou, China. MATERIALS AND METHODS We identified 15 patients who presented with APS as an initial manifestation, based on the 2015 international consensus diagnostic criteria for NMOSD, and reviewed their demographic, clinical, laboratory, and magnetic resonance imaging (MRI) data. RESULT Fifteen patients (3 men, 12 women) aged 14-50 years old were included in our study. All patients presented with APS that included intractable nausea, vomiting, or hiccups (INVH) as the initial manifestation; many experienced a delay in diagnosis. Serum AQP4 was positive in eleven patients and myelin oligodendrocyte glycoprotein (MOG) in one patient. All patients had a linear medullary lesion or a linear medulla-spinal lesion on sagittal MRI. An "inverted V sign" on axial medulla oblongata images, representing a lesion involving the area postrema, was noted in seven patients in this study. CONCLUSIONS APS can occur as a sole and initial manifestation of NMOSD, often leading to misdiagnosis in the early process of disease. Identifying patients with an "inverted V" sign and a linear medullary lesion upon MRI examination can help to quickly identify APS patients and avoid further diagnostic delays.
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Affiliation(s)
- C Zhou
- Department of Neurology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China.
| | - L Liao
- Department of Neurology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China.
| | - R Sun
- Department of Neurology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China.
| | - J Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China.
| | - W Di
- Department of Neurology, affiliated hospital of Hebei university, Hebei, China.
| | - Y Zhu
- Department of Neurology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China.
| | - Y He
- Department of Neurology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China.
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Cai Y, Wang C, Di W, Li W, Liu J, Zhou S. Correlation between blood glucose variability and the risk of death in patients with severe acute stroke. Rev Neurol (Paris) 2020; 176:582-586. [DOI: 10.1016/j.neurol.2019.12.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 12/08/2019] [Accepted: 12/10/2019] [Indexed: 10/25/2022]
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Yu M, Xiang Y, Ma XX, Xue FX, Feng LM, Wang DB, Huang XH, Zhang Y, Zhang GN, Cao DY, Chen CL, Chen J, Cheng WW, Cui ZM, Di W, Guo HY, Hu LN, Li CZ, Li XM, Liang ZQ, Liu AJ, Liu CD, Meng YG, Shen DH, Wan XP, Wang ZH, Xu L, Yang XS, Zhu GH, Lang JH. [Advices on standards of endometrial cancer screening]. Zhonghua Fu Chan Ke Za Zhi 2020; 55:307-311. [PMID: 32464717 DOI: 10.3760/cma.j.cn112141-20200201-00070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
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Gálvez Cortés V, Aragó JB, Mencía Á, Carretero M, Solano EC, Angoiti RM, Vicente A, Di W, Larcher F. 309 Development of a Netherton Syndrome model based on targeted deletion of SPINK5 in human keratinocytes. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Caley M, Marsh S, Martins V, Corbett-Jones T, Chen M, Di W, Sheer D, McGrath J, Barnes M, O’Toole E. 298 Defective DNA Repair and Chromosomal Instability in RDEB. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Polubothu S, Al-Olabi L, Healy E, Di W, Newton-Bishop J, Downward J, Kinsler V. 474 Inherited duplications of PPP2R3B promote naevi and melanoma via a novel C21orf91-driven proliferative phenotype. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Lee M, Wang H, White T, Brooks T, Halai H, Petrova A, Hart S, Kinsler V, Di W. Mutation-targeted siRNA therapy for connexin 26-associated keratitis-ichthyosis-deafness syndrome. Cytotherapy 2019. [DOI: 10.1016/j.jcyt.2019.04.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Zhang J, Di W, Gong P, Lin K, Lyu L, Zhang L, Han X, Ma Y. Direct and fast capture lactoferrin from cheese whey on nanoparticles of Fe3O4 combined with concanavalin A. Food Chem 2019; 274:314-318. [DOI: 10.1016/j.foodchem.2018.08.115] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 08/19/2018] [Accepted: 08/24/2018] [Indexed: 11/25/2022]
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Yin X, Cheng J, Ansari SH, Campo R, Di W, Li W, Bigatti G. Hysteroscopic tissue removal systems for the treatment of intrauterine pathology: a systematic review and meta-analysis. Facts Views Vis Obgyn 2018; 10:207-213. [PMID: 31367293 PMCID: PMC6658200] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND The use of mechanical tissue removal systems is more frequently implemented as the first line approach for the treatment of intrauterine pathology. Scientific evidence is provided that their use is easier and faster than the conventional resectoscope. It is necessary to objectively evaluate the results on tissue removal systems for the treatment of endometrial pathology as the reports in the literature are still conflicting. OBJECTIVE To review and compare mechanical hysteroscopic tissue removal systems (Truclear®, Myosure® or IBS®) versus conventional bipolar and monopolar resectoscopy for the treatment of polyp and myoma removal. Operation time, completeness of tissue removal, complication rate, fluid deficit, tolerability and learning curve were evaluated. METHODS Electronic databases PubMed; Medline and Web of Science were searched for papers published from 1st January 2010 to 1st May 2019 using terms: ("hysteroscopic" or "hysteroscopy" or "hysteroscopic surgery") and ("myoma" or "polyps"). Studies were included if they were retrospective, observational and prospective randomized clinical controlled trials if they investigated the techniques between the tissue removal systems (Truclear®, Myosure® or IBS®) and conventional resectoscopy for the treatment of intrauterine pathology. Data were extracted from the included studies by two independent reviewers. Meta-analysis was performed by Rev Man 5 software (Cochrane Collaboration, London, UK). Results: Overall, 498 patients were analysed from five studies in which there was no difference in age and size of pathology treated either by the hysteroscopic tissue removal systems and the conventional resectoscope. Hysteroscopic tissue removal systems showed a significantly higher success rate of complete endometrial pathology removal (P=0.002) and a significantly shorter operation time for polyp removal (P<0.0001) compared to conventional resectoscopy. No significant differences, in terms of complications rate, were found (P=0.09). The fluid deficit was significantly higher in the tissue removal system group, compared to conventional resectoscopy (P=0.02). CONCLUSION Hysteroscopic tissue removal systems showed a major advantage in successful removal of the pathology and total operation time. It is likely that the tissue removal systems are more accessible and have a lower complication profile including perforation, via falsa and bleeding due to its specific action mechanism and shorter operation time but higher-quality trials will be required to confirm this hypothesis.
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Affiliation(s)
- X Yin
- Sino European Life Expert Centre-Department of Obstetrics and Gynaecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Gynaecologic Oncology, China
| | - J Cheng
- Sino European Life Expert Centre-Department of Obstetrics and Gynaecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Gynaecologic Oncology, China
| | - S H Ansari
- Department of Obstetrics and Gynaecology, Day General Hospital, Tehran, Iran
| | - R Campo
- Life Expert Centre, Leuven, Belgium
| | - W Di
- Sino European Life Expert Centre-Department of Obstetrics and Gynaecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Gynaecologic Oncology, China
| | - W Li
- Sino European Life Expert Centre-Department of Obstetrics and Gynaecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Gynaecologic Oncology, China
| | - G Bigatti
- Sino European Life Expert Centre-Department of Obstetrics and Gynaecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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He Y, Li J, Mao W, Zhang D, Liu M, Shan X, Zhang B, Zhu C, Shen J, Deng Z, Wang Z, Yu W, Chen Q, Guo W, Su P, Lv R, Li G, Li G, Pei B, Jiao L, Shen G, Liu Y, Feng Z, Su Y, Xie Y, Di W, Liu X, Yang X, Wang J, Qi J, Liu Q, Han Y, He J, Cai J, Zhang Z, Zhu F, Du D. HLA common and well-documented alleles in China. HLA 2018; 92:199-205. [DOI: 10.1111/tan.13358] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 06/22/2018] [Accepted: 07/29/2018] [Indexed: 11/29/2022]
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Bigatti G, Ansari SH, Di W. The 19 Fr. Intrauterine Bigatti Shaver (IBS®): a clinical and technical update. Facts Views Vis Obgyn 2018; 10:161-164. [PMID: 31191851 PMCID: PMC6548407] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
In this case report we describe the first two surgeries conducted with the 19 Fr. IBS®. The indication for operative hysteroscopy in both patients was the removal of polyps. The size of the polyps was between 15 mm and 20 mm with a mean resection time of 40 seconds. Normal saline solution (500 ml) was used with a negative fluid loss (100 ml). Both operations were successfully performed under general anaesthesia and no speculum, no tenaculum and no dilatation of the cervical canal were necessary.
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Affiliation(s)
- G Bigatti
- Sino European Life Expert Centre, Shanghai Jiaotong University Affiliated Renji Hospital.160 Pujian Rd. Shanghai, China
| | - S H Ansari
- Department of Obstetrics and Gynecology, Day General Hospital, Tehran Iran
| | - W Di
- Chief Director of OBGYN Department of Shanghai Jaotong University Affiliated Renji Hospital,160 Pujian Rd. Shanghai, China
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Cheng LN, Di W, Ding Y. [Chinese expert consensus on the clinical application of female contraception]. Zhonghua Fu Chan Ke Za Zhi 2018; 53:433-447. [PMID: 30078252 DOI: 10.3760/cma.j.issn.0529-567x.2018.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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Qian CF, Fan GS, Liao QP, Wu SY, La DD, Di W, Dong BH, Liu HW, Tang LD, Xiong ZA, Zhang HW, Hu YL, Yang NM, Ren ML, Shi H, Deng GP, Huang ZR. [Efficacy and safety of low-dose levonorgestrel-releasing intrauterine system in Chinese women: a multicenter, single-arm, open labeled interventional trial]. Zhonghua Fu Chan Ke Za Zhi 2018; 53:409-413. [PMID: 29961284 DOI: 10.3760/cma.j.issn.0529-567x.2018.06.009] [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: To evaluate the efficacy, bleeding profile and safety of low-dose levonorgestrel-releasing intrauterine system (LNG-IUS 8) in Chinese healthy women of childbearing age. Methods: A multi-center, open-label, single-arm clinical trial conducted at 16 centres in China enrolled 773 healthy women of childbearing age (mean age 31.6 years old, range 18 to 40 years old) , who demanded contraception, from April 2006 to June 2013. All women placed LNG-IUS 8 for 3 years and then been followed up at 3, 6, 9, 12, 18, 24, 30, 36 months. The efficacy variables including pregnancy rate and expulsion rate were analyzed using life table, while observing adverse events (AE) to evaluate the safety. The bleeding profile happened during the study was assessed using 90-day reference intervals (World Health Organization criteria) . Results: Eight pregnancies occurred among 773 women, resulting in a overall Pearl index of 0.42 per 100 women years. The 3-year cumulative pregnancy rate was 0.37 per 100 women years and the 3-year cumulative expulsion rate was 1.99 per 100 women years. The number of women with bleeding/spotting reduced and the bleeding/spotting days declined over time. Totally 219 AE were reported related to LNG-IUS 8 placements. The most common AE were vaginal bleeding (8.2%, 63/773) and the ovarian cyst (6.2%, 52/773) . LNG-IUS 8 had an improving effect on dysmenorrhea that the percentage of women with dysmenorrhea as well as the days of dysmenorrhea decreased over time. The percentage of women satisfied or very satisfied with LNG-IUS 8 was 87.2% (622/713) . Conclusion: LNG-IUS 8 is highly effective and safe for Chinese healthy women of childbearing age.
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Affiliation(s)
- C F Qian
- Department of Family Planning, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
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Lwin S, Syed F, Di W, Petrova A, Kadiyirire T, Mellerio J, Hovnanian A, Qasim W, McGrath J. 738 Safety outcomes for first-in-man intradermal injections of lentiviral-engineered COL7A1-supplemented autologous fibroblasts in adults with recessive dystrophic epidermolysis bullosa. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.748] [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: 10/17/2022]
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Dai L, Liu YX, Xie L, Di W. [Effect of S1PR2 inhibition on epithelial ovarian cancer SKOV3 cell proliferation in vitro and in vivo]. Zhonghua Fu Chan Ke Za Zhi 2018. [PMID: 29534379 DOI: 10.3760/cma.j.issn.0529-567x.2018.02.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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 study the effect and mechanism of S1PR2 inhibition on epithelial ovarian cancer SKOV3 cell proliferation in vitro and in vivo. Methods: (1) A pair of S1PR2 gene small interference RNA (siRNA) , namely si-S1PR2, and a pair of negative control siRNA were designed. Western blot methods were used to detect the silence efficiency of the S1PR2 in the si-S1PR2 group, blank control group and negative control group. (2) Study in vitro: the experiment included three groups, namely si-S1PR2 group, blank control group and negative control group. Cell counting kit-8 (CCK-8) assay was used to detect the proliferation inhibition rates of the transfected cells. The cell cycles of the transfected cells were measured by flow cytometry. Western blot was used to detect the levels of phosph-extracellular regulated protein kinase 1/2 (p-ERK1/2) of the transfected cells. (3) Study in vivo:to establish intraperitoneal transplantation models, 8 mice in each group were intraperitoneally injected with 5×10(6) SKOV3 cells. Phosphate buffered saline (PBS) or JTE-013 were administered into mice twice per week starting on day 7 after the injection of the cancer cells. Twenty-eight days after nude mice intraperitoneal injection with JTE-013 or PBS, the mice were sacrificed and the number and the weight of visible tumors were calculated. Results: (1) The results of western blot showed that the relative S1PR2 protein expression levels were 0.24±0.04 in the si-S1PR2 group, which was lower than that in the blank control group (1.10±0.14, P<0.01) and negative control group (1.07±0.13, P<0.01) . (2) The results of CCK-8 assay indicated that after transfected for 24, 48 and 72 hours, the proliferation inhibition rate of si-S1PR2 group were respectively (26.6±3.3) %, (35.0±3.4) %, and (34.0±2.8) %, significantly lower than those in the blank control group (all 0; all P<0.01) and negative control group [ (1.7±0.9) %, (2.5±0.5) %,and (2.4±1.1) % respectively; all P<0.01]. The results of flow cytometry showed that the G(0)/G(1) ratio in the si-S1PR2 group [ (70.9±2.8) %] was significantly higher than those in the blank control group [ (61.7±2.4) %, P<0.01] and negative control group [ (62.1±3.3) %, P<0.01]. Western blot showed that the relative expression level of p-ERK1/2 in si-S1PR2 group (0.11±0.03) was significantly lower than those in the blank control group [ (0.62±0.09) , P<0.01] and negative control group [ (0.68±0.09) , P<0.01]. (3)Twenty-eight days after nude mice intraperitoneal injection with JTE-013 or PBS, the tumor number of the control group and JTE-013 group were respectively 15.4±4.3 and 8.2±3.7, the tumor weight were (0.45±0.12) and (0.21±0.07) g, respectively. The tumor number and weight in the JTE-013 group were significantly less than those in the control group (all P<0.01) . Conclusions: The growth of ovarian cancer cells could be decreased by S1PR2 inhibition in vitro and in vivo. One of the mechanisms of the growth inhibitory effect is probably that S1PR2 inhibition lower the phosphorylation level of extracellular regulated protein kinase 1/2 (ERK1/2) pathway, which prevent the transformation of ovarian cancer cells from phase G(1) to S.
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Affiliation(s)
- L Dai
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Key Laboratory of Gynecologic Oncology, Shanghai 200127, China
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Shu-Guang Z, Li-Li T, Di W. [Investigation of health knowledge and behaviors on clonorchiasis sinensis of urban residents in Yanqing District, Beijing City]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2017; 29:490-493. [PMID: 29508588 DOI: 10.16250/j.32.1374.2017039] [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: 11/27/2022]
Abstract
Objective To understand the status of health knowledge and behaviors on clonorchiasis sinensis of urban residents in Yanqing District of Beijing City, China, so as to provide the targeted suggestions for further health education. Methods The communities/streets were selected as the investigation sites by using the stratified randomly sampling method. A total of 283 residents were randomly selected and investigated with the structural questionnaire designed by Beijing Center for Disease Control and Prevention. The fecal samples were collected and the eggs of Clonorchis sinensis were detected with Kato-Katz technique. Results All of the questionnaires were valid. The awareness rate about clonorchiasis was 25.09%. The rates of knowing clonorchiasis infection route, harm and prevention measures were 10.60%, 9.89% and 10.60% respectively. Totally 7.07% of the residents had the habits of eating raw or undercooked fresh water fish, and 2.47% of the residents had the behavior of eating sashimi. C. sinensis eggs were not found among the research objects. Conclusions The awareness rate about clonorchiasis is low among urban residents in Yanqing District. The focus of the future work is to extensively carry out the health education about clonorchiasis prevention and control and take relevant interventions.
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Affiliation(s)
- Z Shu-Guang
- Yanqing District Center for Disease Control and Prevention, Beijing City, Yanqing 102100, China
| | - T Li-Li
- Beijing Center for Disease Control and Prevention, China
| | - W Di
- Yanqing District Center for Disease Control and Prevention, Beijing City, Yanqing 102100, China
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Lee M, Kinsler V, Hart S, Di W. 478 Mutation-specific siRNA Knockdown of GJB2 − Potential gene therapy for Keratitis-ichthyosis-deafness Syndrome. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.498] [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: 11/29/2022]
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Di W, Jia MX, Xu J, Li BL, Liu Y. Exogenous Catalase and Pyruvate Dehydrogenase Improve Survival and Regeneration and Affect Oxidative Stress in Cryopreserved Dendrobium nobile Protocorm-like Bodies. Cryo Letters 2017; 38:228-238. [PMID: 28767746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
BACKGROUND Reactive oxygen species (ROS)-induced oxidative damage is responsible for viability loss in plant tissues following cryopreservation. Antioxidants may improve viability by preventing or repairing the injury. OBJECTIVE This work aimed at studying the effect of catalase (CAT) and pyruvate dehydrogenase (PDH), which are involved in ROS metabolism and are differentially expressed during pollen cryopreservation, for cryopreservation of Dendrobium nobile Lindl. 'Hamana Lake Dream' protocorm-like bodies (PLBs). MATERIALS AND METHODS Different concentrations of exogenous CAT or PDH were added at the loading, PVS2 treatment, unloading steps during vitrification-cryopreservation of PLBs. Their survival and regeneration were evaluated and correlated with physiological oxidative indexes. RESULTS PLB survival increased significantly when CAT and PDH were added separately to the unloading solution at a suitable concentration. CAT at 400 U·ml-1 increased PLB survival and regeneration by 33.5 and 14.6 percent respectively. It had no impact on the production of superoxide anion radical (·O2-) and on superoxide dismutase (SOD) activity, but it reduced the hydrogen peroxide (H2O2) and malondialdehyde (MDA) contents and enhanced ascorbic acid (AsA) and endogenous CAT levels compared to PLBs cryopreserved using the standard vitrification protocol (CK1). PDH at 0.1 U·ml-1 significantly improved PLB survival (by 2.5 percent), but it had no marked effect on regeneration compared to the CK1 group. It induced the same variations in ·O2-, AsA and endogenous CAT levels that were observed following CAT addition. However, PDH did not affect the H2O2 and MDA content but significantly increased SOD activity. CONCLUSION These results indicate that the addition of 400 U·ml-1 CAT and 0.1 U·ml-1 PDH at the unloading step increased survival of cryopreserved PLBs and that this improvement was associated with scavenging of H2O2 and the repair of oxidative damage. Exogenous CAT also significantly improved PLB regeneration after cryopreservation, while PDH had no obvious effect. The effect of exogenous CAT on PLB survival and regeneration was stronger than that of PDH, which may be due to the increased SOD activity by PDH addition.
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Affiliation(s)
- W Di
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and Molecular Breeding, National Engineering Research Center for Floriculture, College of Landscape Architecture, Beijing Forestry University, Beijing China
| | - M X Jia
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and Molecular Breeding, National Engineering Research Center for Floriculture, College of Landscape Architecture, Beijing Forestry University, Beijing China
| | - J Xu
- College of Architecture and Urban Planning, Guangzhou University, Guangzhou China
| | - B L Li
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and Molecular Breeding, National Engineering Research Center for Floriculture, College of Landscape Architecture, Beijing Forestry University, Beijing China
| | - Y Liu
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and Molecular Breeding, National Engineering Research Center for Floriculture, College of Landscape Architecture, Beijing Forestry University, Beijing China.
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Jia M, Liu Y, Xu J, Jiang X, Di W, Peng J. Protective effect of exogenous MDH on cryopreserved pollen from Magnolia denudate. Cryobiology 2016. [DOI: 10.1016/j.cryobiol.2016.09.028] [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: 11/15/2022]
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Di W, Zhang L, Han X. 0500 Inducing HT-29 colon cells apoptosis by the extracellular polymeric substances isolate from L. casei strains. J Anim Sci 2016. [DOI: 10.2527/jam2016-0500] [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: 11/13/2022] Open
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Jia M, Di W, Liu Y, Shi Y, Xie Y. ROS-INDUCED OXIDATIVE STRESS IN NOBILE-TYPE DENDROBIUM PROTOCORM-LIKE BODIES (PLBS) DURING VITRIFICATION. Cryo Letters 2016; 37:253-263. [PMID: 27925008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Oxidative stress involved in cryopreservation protocols may be responsible for the poor survival of tissues after cryopreservation. OBJECTIVE In the current study, we aimed to clarify the role of oxidative stress and its relationship with survival rate during cryopreservation of PLBs from nobile-type Dendrobium. MATERIALS AND METHODS ROS, antioxidants and oxidative products and the survival rate in PLBs from Dendrobium Hamanal Lake Dream were determined during vitrification. RESULTS Relative survival of PLBs decreased significantly after preculture and rewarming (P<0.01). Generation of ·O2- and protein carbonyl (PCO) increased significantly after preculture. Dramatic increases in ·O2-, H2O2 and MDA, and significant decreases in AsA content, activities of SOD and CAT were observed after rewarming. CONCLUSION ROS-induced oxidative stress was associated with the poor survival of PLBs following vitrification. ·O2- was the predominant ROS resulting in the decreased survival after preculture, while H2O2 together with ·O2- appear to be responsible for the survival decrease after rewarming.
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Affiliation(s)
- M Jia
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and Molecular Breeding, National Engineering Research Center for Floriculture, College of Landscape Architecture, Beijing Forestry University, Beijing, China
| | - W Di
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and Molecular Breeding, National Engineering Research Center for Floriculture, College of Landscape Architecture, Beijing Forestry University, Beijing, China
| | - Yan Liu
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and Molecular Breeding, National Engineering Research Center for Floriculture, College of Landscape Architecture, Beijing Forestry University, Beijing, China.
| | - Yin Shi
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and Molecular Breeding, National Engineering Research Center for Floriculture, College of Landscape Architecture, Beijing Forestry University, Beijing, China
| | - Y Xie
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and Molecular Breeding, National Engineering Research Center for Floriculture, College of Landscape Architecture, Beijing Forestry University, Beijing, China
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Wencui Z, Qi Z, Ying W, Di W. Preparation of solid lipid nanoparticles loaded with garlic oil and evaluation of their in vitro and in vivo characteristics. Eur Rev Med Pharmacol Sci 2015; 19:3742-3750. [PMID: 26502865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE Solid lipid nanoparticles (SLN) are colloidal drug carriers and may be suitable for delivery of garlic oil, a nutraceutical with medicinal properties, whose use has been limited by its poor solubility. We tested whether poor solubility of garlic oil would be overcome by complexing with SLN by high-pressure homogenization and ultrasound techniques. The effects of lipid phase, surfactant mixture and loading concentration of garlic oil on particle size and distribution were also investigated. MATERIALS AND METHODS High pressure homogenization technique was used to prepare SLN, using orthogonal experiment method to optimize entrapment efficiency, loading efficiency, and recovery of SLN. Pharmacokinetics of garlic oil loaded solid lipid nanoparticles after oral administration to rats was studied by using LC/MS/MS method. RESULTS Mean particle size and zeta potential of SLN were, respectively, 106.5 ± 40.3 nm and -30.2 mv. The majority of SLN had a less ordered arrangement of crystals at room temperature, which was beneficial for increasing the drug loading capacity. Drug entrapment efficiency was > 90 percent and showed a relatively long-term physical stability. It was feasible to prepare a lyophilized product with good long-term stability. When 10% trehalose and 5% sucrose were used as cryopreservants, SNL particle size increased from 106.5 nm prior to lyophilisation to 155.3 nm after reconstitution. The garlic oil content in SLN decreased to about 85% (respectively, 34.3 vs. 39.4 mg/mL prior to lyophilisation) due to volatility of garlic oil. Pharmacokinetic studies in rats demonstrated that distribution and elimination of diallyl trisulfide (DATS) and diallyl disulfide (DADS) in garlic oil were rapid. Additionally, elimination of garlic oil-SLN complex is faster than that of garlic oil alone, probably, due to phagocytosis. CONCLUSIONS An SLN complex with garlic oil exhibits characteristics similar to those of parenteral emulsions, even after lyophilization and reconstitution.
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Affiliation(s)
- Z Wencui
- The 208 Hospital of Chinese People's Liberation Army, Changchun, P.R. China.
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Marchesi D, Pan Y, Di W, Hawkins E, Hershlag A. Does sperm DNA integrity predict IVF outcomes? Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.1285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Di W, Shi X, Zhu Y, Tao Y, Qi W, Luo N, Xiao Z, Yi C, Miao J, Zhang A, Zhang X, Fang Y. Overuse of paracetamol caffeine aspirin powders affects cerebral glucose metabolism in chronic migraine patients. Eur J Neurol 2012; 20:655-62. [PMID: 23114018 DOI: 10.1111/ene.12018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2012] [Accepted: 09/18/2012] [Indexed: 01/22/2023]
Affiliation(s)
- W. Di
- Department of Neurology; the First Affiliated Hospital; Sun Yat-sen University; Guangzhou China
| | - X. Shi
- Department of Nuclear Medicine; the First Affiliated Hospital; Sun Yat-sen University; Guangzhou China
| | - Y. Zhu
- Zhongshan Ophthalmic Center; Sun Yat-sen University; Guangzhou China
| | - Y. Tao
- Department of Neurology; the First Affiliated Hospital; Sun Yat-sen University; Guangzhou China
| | - W. Qi
- Department of Neurology; the First Affiliated Hospital; Sun Yat-sen University; Guangzhou China
| | - N. Luo
- Department of Neurology; the First Affiliated Hospital; Sun Yat-sen University; Guangzhou China
| | - Z. Xiao
- Department of Neurology; the First Affiliated Hospital; Sun Yat-sen University; Guangzhou China
| | - C. Yi
- Department of Nuclear Medicine; the First Affiliated Hospital; Sun Yat-sen University; Guangzhou China
| | - J. Miao
- Department of Neurology; the First Affiliated Hospital; Sun Yat-sen University; Guangzhou China
| | - A. Zhang
- Department of Neurology; the First Affiliated Hospital; Sun Yat-sen University; Guangzhou China
| | - X. Zhang
- Department of Nuclear Medicine; the First Affiliated Hospital; Sun Yat-sen University; Guangzhou China
| | - Y. Fang
- Department of Neurology; the First Affiliated Hospital; Sun Yat-sen University; Guangzhou China
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Zhang XB, Zhong YC, Chi JC, Shen JL, Qiu XX, Xu JR, Zhao AM, Di W. Caesarean Scar Pregnancy: Treatment with Bilateral Uterine Artery Chemoembolization Combined with Dilation and Curettage. J Int Med Res 2012. [PMID: 23206476 DOI: 10.1177/030006051204000533] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective: This study investigated bilateral uterine artery chemo -embolization (BUACE) combined with dilation and curettage (D&C) in caesarean scar pregnancy (CSP). Methods: Nineteen women with CSP were referred for interventional radiology. In 13 patients, BUACE was performed before D&C, following a diagnosis of CSP. A further six patients received BUACE for massive vaginal bleeding after D&C for inevitable miscarriage; the diagnosis of CSP was subsequently confirmed ultrasonographically. BUACE of the uterine arteries was performed using gelfoam particles following intra-arterial infusion of 100 mg/m2 methotrexate. Results: BUACE was technically successful and immediate haemostasis was achieved in all patients. Blood loss was significantly greater during D&C undertaken before BUACE compared with D&C after BUACE, but this bleeding was controlled by BUACE. No patient required further surgical intervention and there were no severe complications. The gestational sac and placenta could no longer be detected ultrasonographically and the menstrual cycle returned to normal 2 - 3 months after treatment in all patients. Conclusions: BUACE followed by D&C seems to be a safe and effective treatment for CSP and should be considered as a treatment of choice.
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Affiliation(s)
- X-B Zhang
- Department of Interventional Radiology, Renji Hospital, Shanghai JiaoTong University Medical School, Shanghai, China
| | - Y-C Zhong
- Department of Obstetrics and Gynaecology, Renji Hospital, Shanghai JiaoTong University Medical School, Shanghai, China
| | - J-C Chi
- Department of Interventional Radiology, Renji Hospital, Shanghai JiaoTong University Medical School, Shanghai, China
| | - J-L Shen
- Department of Interventional Radiology, Renji Hospital, Shanghai JiaoTong University Medical School, Shanghai, China
| | - X-X Qiu
- Department of Interventional Radiology, Renji Hospital, Shanghai JiaoTong University Medical School, Shanghai, China
| | - J-R Xu
- Department of Interventional Radiology, Renji Hospital, Shanghai JiaoTong University Medical School, Shanghai, China
| | - A-M Zhao
- Department of Obstetrics and Gynaecology, Renji Hospital, Shanghai JiaoTong University Medical School, Shanghai, China
| | - W Di
- Department of Obstetrics and Gynaecology, Renji Hospital, Shanghai JiaoTong University Medical School, Shanghai, China
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Jiang T, Xu RX, Zhang AW, Di W, Xiao ZJ, Miao JY, Luo N, Fang YN. Effects of transcranial direct current stimulation on hemichannel pannexin-1 and neural plasticity in rat model of cerebral infarction. Neuroscience 2012; 226:421-6. [PMID: 23000539 DOI: 10.1016/j.neuroscience.2012.09.035] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Revised: 09/13/2012] [Accepted: 09/14/2012] [Indexed: 10/27/2022]
Abstract
The aim of this study was to investigate the effects of transcranial direct current stimulation (TDCS) on hemichannel pannexin-1 (PX1) in cortical neurons and neural plasticity, and explore the optimal time window of TDCS therapy after stroke. Adult male Sprague-Dawley rats (n=90) were randomly assigned to sham operation, middle cerebral artery occlusion (MCAO), and TDCS groups, and underwent sham operation, unilateral middle cerebral artery (MCA) electrocoagulation, and unilateral MCA electrocoagulation plus TDCS (daily anodal and cathodal 10 Hz, 0.1 mA TDCS for 30 min beginning day 1 after stroke), respectively. Motor function was assessed using the beam walking test (BWT), and density of dendritic spines (DS) and PX1 mRNA expression were compared among groups on days 3, 7, and 14 after stroke. Effects of PX1 blockage on DS in hippocampal neurons after hypoxia-ischemia were observed. TDCS significantly improved motor function on days 7 and 14 after stroke as indicated by reduced BWT scores compared with the MCAO group. The density of DS was decreased after stroke; the TDCS group had increased DS density compared with the MCAO group on days 3, 7, and 14 (all P<0.0001). Cerebral infarction induced increased PX1 mRNA expression on days 3, 7, and 14 (P<0.0001), and the peak PX1 mRNA expression was observed on day 7. TDCS did not decrease the up-regulated PX1 mRNA expression after stroke on day 3, but did reduce the increased post-stroke PX1 mRNA expression on days 7 and 14 (P<0.0001). TDCS increased the DS density after stroke, indicating that it may promote neural plasticity after stroke. TDCS intervention from day 7 to day 14 after stroke demonstrated motor function improvement and can down-regulate the elevated PX1 mRNA expression after stroke.
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Affiliation(s)
- T Jiang
- Department of Neurology, The Third Affiliated Hospital of Southern Medical University, No. 183, Zhongshan Road West, Guangzhou 510630, China
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Abstract
Thin film method was applied successfully to prepare Triptolide (TP)-loaded micelles system. With a dynamic light scattering sizer and a transmission electron microscopy, it was shown that the TP-loaded micelles had a mean size of 84.3±6.4 nm with a spherical shape. The in vitro release profiles indicated that the release of TP from the micelles exhibited a sustained release behavior. A similar phenomenon was also observed in a pharmacokinetic study in rats, in which AUC of the micelles formulation were 4.7-fold higher than that of TP injection. The biodistribution study in rats showed that the TP-loaded micelles not only decreased drug uptake by liver, but also increased distribution of drug in ovary. The present work demonstrated the feasibility of controlled delivery of TP utilizing micelles system.
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Affiliation(s)
- H Li
- Department of Chinese Traditional Medicine, Renji Hospital Jiaotong University School of Medicine, Shanghai, China
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Li H, Wen XS, Di W. A simple LC-MS/MS method for determination of magnolol in rat blood and its application in a pharmacokinetic study. ACTA ACUST UNITED AC 2012; 62:83-7. [PMID: 22344552 DOI: 10.1055/s-0031-1295485] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
A simple LC-MS/MS method was developed for determination and pharmacokinetic study of magnolol in rat blood. Blood sample pretreatment involved a one-step extraction with methanol of 100 µL blood. The chromatographic separation was carried out on a Agilent Zobax SB C18 column with a mobile phase consisting of acetonitrile-0.2% formic acid (55:45, v/v) at a flow rate of 0.3 mL/min. The detection was performed on a triple quadrupole tandem mass spectrometer by multiple reaction monitoring via electro spray ionization source with positive mode. A high throughput was achieved with a run time of 4 min per sample. The standard curve for magnolol was linear (r > 0.999) over the concentration range of 2-1 000 ng/mL, with a lower limit of quantification of 2 ng/mL. The intra- and inter-day precision (relative standard deviation) values were not higher than 12% and the accuracy (relative error) was <5% at three quality control levels. This simple, fast and highly sensitive method was fully validated and successfully applied to a clinical pharmacokinetic study of magnolol in rats after oral administration.
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Affiliation(s)
- H Li
- Department of Chinese Traditional Medicine, Renji Hospital Jiaotong University School of Medicine, Shanghai, China
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Wu ZM, Yang H, Li M, Yeh CC, Schatz F, Lockwood CJ, Di W, Huang SJ. Pro-inflammatory cytokine-stimulated first trimester decidual cells enhance macrophage-induced apoptosis of extravillous trophoblasts. Placenta 2011; 33:188-94. [PMID: 22212249 DOI: 10.1016/j.placenta.2011.12.007] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 12/08/2011] [Accepted: 12/09/2011] [Indexed: 01/13/2023]
Abstract
OBJECTIVE As human blastocyst-derived extravillous trophoblasts (EVTs) invade the early decidua, they are positioned to interact with immune cells and resident decidual cells, and remodel spiral arteries into high capacity vessels that increase blood flow to the developing fetal-placental unit. Shallow EVT invasion elicits incomplete vascular transformation and reduces uteroplacental blood flow that presages adverse pregnancy outcomes. Excess macrophages in the decidua induce EVT apoptosis via tumor necrosis factor-alpha (TNF-α) secretion. Our previous observation that pro-inflammatory cytokines enhance neutrophil and macrophage activator granulocyte-macrophage colony-stimulating factor (GM-CSF) expression in first trimester decidual cells is now extended to include: (1) the specific macrophage activator M-CSF; (2) macrophage activation and subsequent enhancement of EVT apoptosis by both GM-CSF and M-CSF. STUDY DESIGN Quantitative reverse transcription-polymerase chain reaction and enzyme-linked immunosorbent assay assessed M-CSF expression in first trimester decidual cells incubated with interleukin-1 beta (IL-1β) or TNF-α. Peripheral monocyte-derived macrophages pre-incubated with conditioned media from decidual cell cultures were co-cultured with a first trimester EVT cell line, HTR-8/SVneo cells. Macrophage activation was examined and EVT apoptosis evaluated by DNA fragmentation, caspase activation and cell membrane asymmetry. RESULTS IL-1β or TNF-α significantly enhanced M-CSF expression in first trimester decidual cells. The conditioned media from these cultures activates macrophages, which promote caspase 3/7-dependent EVT apoptosis with antibodies against GM-CSF or M-CSF blocking this effect. CONCLUSIONS Pro-inflammatory cytokines increases synthesis of M-CSF in first trimester decidual cells. Both GM-CSF and M-CSF activate macrophages, which initiate caspase-dependent EVT apoptosis.
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Affiliation(s)
- Z M Wu
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University, 333 Cedar St., P. O. Box 208063, New Haven, CT 06520, USA
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Gu L, Qiu L, Di W. P1016 TWEAK can inhibit the activity of ovarian cancer via macrophage. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)62502-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Qiu L, Dai L, Gu L, Di W. O764 TWEAK promotes ovarian cancer cell metastasis via NF-κB pathway activation and VEGF expression. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61137-1] [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: 11/16/2022]
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Zhang S, Di W, Lin Q. P1130 The polycomb group protein EZH2 controls hypermethylation of SOCS2 and DKK2 genes in metastatic ovarian cancer. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)62614-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Xu H, Di W, Chen D. [Expression of human leucocyte antigen in ectopic endometrial tissue of endometriosis]. Zhonghua Fu Chan Ke Za Zhi 2001; 36:473-5. [PMID: 11758182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To investigate the human leucocyte antigen (HLA) expression of ectopic endometrial epithelial cells in cases with endometriosis and its role in pathogenesis of endometriosis. METHODS By immunohistochemical analysis, HLA expression was observed in ectopic endometrial epithelial cells of 25 endometriosis patients. Ectopic endometrial cells were cultured in vitro successfully and the expression of HLA were analyzed by flow cytometry in 10 out of the 25 patients. Eutopic endometrium of 15 normal women were taken as control. RESULTS (1) Expression of HLA class I molecule on ectopic endometrial epithelial cells of endometriosis measured by the immunohistochemical analysis was lower than those of controls, (4.0 +/- 0.5) score and (1.2 +/- 0.8) score respectively. So was the expression rate by flow cytometry in vitro culture (63.38 +/- 11.88)% and (5.27 +/- 2.88)% respectively (P < 0.01). (2) The expression of HLA class II molecule on ectopic endometrial epithelial cells of endometriosis was significantly increased. The outcome by immunohistochemical analysis was (0.2 +/- 0.1) score (control group) and (4.1 +/- 0.7) score (case group) and by flow cytometry was (7.19 +/- 2.43)% and (58.57 +/- 14.99)% respectively (P < 0.01). CONCLUSIONS The abnormal HLA expression could play a role in the pathogenesis of endometriosis.
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Affiliation(s)
- H Xu
- Department of Obstetrics and Gynecology, Renji Hospital, Shanghai Second Medical University, Shanghai 200001, China
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Pershouse M, Li J, Yang C, Su H, Brundage E, Di W, Biggs PJ, Bradley A, Chinault AC. BAC contig from a 3-cM region of mouse chromosome 11 surrounding Brca1. Genomics 2000; 69:139-42. [PMID: 11013085 DOI: 10.1006/geno.2000.6323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Even with the completion of a draft version of the human genome sequence only a fraction of the genes identified from this sequence have known functions. Chromosomal engineering in mouse cells, in concert with gene replacement assays to prove the functional significance of a given genomic region or gene, represents a rapid and productive means for understanding the role of a given set of genes. Both techniques rely heavily on detailed maps of chromosomal regions, initially to understand the scope of the regions being modified and finally to provide the cloned resources necessary to allow both finished sequencing and large insert complementation. This report describes the creation of a BAC clone contig on mouse chromosome 11 in a region showing conservation of synteny with sequences on human chromosome 17. We have created a detailed map of an approximately 3-cM region containing at least 33 genes through the use of multiple BAC mapping strategies, including chromosome walking and multiplex oligonucleotide hybridization and gap filling. The region described is one of the targets of a large effort to create a series of mice with regional deletions on mouse chromosome 11 (33-80 cM) that can subsequently be subjected to further mutagenesis.
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Affiliation(s)
- M Pershouse
- Department of Molecular and Human Genetics, Howard Hughes Medical Institute, Baylor College of Medicine, One Baylor Plaza, Houston, Texas 77030, USA
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Xiao JH, Feng X, Di W, Peng ZH, Li LA, Chambon P, Voorhees JJ. Identification of heparin-binding EGF-like growth factor as a target in intercellular regulation of epidermal basal cell growth by suprabasal retinoic acid receptors. EMBO J 1999; 18:1539-48. [PMID: 10075925 PMCID: PMC1171242 DOI: 10.1093/emboj/18.6.1539] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The role of retinoic acid receptors (RARs) in intercellular regulation of cell growth was assessed by targeting a dominant-negative RARalpha mutant (dnRARalpha) to differentiated suprabasal cells of mouse epidermis. dnRARalpha lacks transcriptional activation but not DNA-binding and receptor dimerization functions. Analysis of transgenic mice revealed that dnRARalpha dose-dependently impaired induction of basal cell proliferation and epidermal hyperplasia by all-trans RA (tRA). dnRARalpha formed heterodimers with endogenous retinoid X receptor-alpha (RXRalpha) over RA response elements in competition with remaining endogenous RARgamma-RXRalpha heterodimers, and dose-dependently impaired retinoid-dependent gene transcription. To identify genes regulated by retinoid receptors and involved in cell growth control, we analyzed the retinoid effects on expression of the epidermal growth factor (EGF) receptor, EGF, transforming growth factor-alpha, heparin-binding EGF-like growth factor (HB-EGF) and amphiregulin genes. In normal epidermis, tRA rapidly and selectively induced expression of HB-EGF but not the others. This induction occurred exclusively in suprabasal cells. In transgenic epidermis, dnRARalpha dose-dependently inhibited tRA induction of suprabasal HB-EGF and subsequent basal cell hyperproliferation. Together, our observations suggest that retinoid receptor heterodimers located in differentiated suprabasal cells mediate retinoid induction of HB-EGF, which in turn stimulates basal cell growth via intercellular signaling. These events may underlie retinoid action in epidermal regeneration during wound healing.
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Affiliation(s)
- J H Xiao
- Department of Dermatology, University of Michigan, Ann Arbor, Michigan 48109, USA.
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Di W, Li XY, Datta S, Aström A, Fisher GJ, Chambon P, Voorhees JJ, Xiao JH. Keratinocyte-specific retinoid regulation of human cellular retinoic acid binding protein-II (hCRABPII) gene promoter requires an evolutionarily conserved DR1 retinoic acid-responsive element. J Invest Dermatol 1998; 111:1109-15. [PMID: 9856825 DOI: 10.1046/j.1523-1747.1998.00455.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [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: 11/20/2022]
Abstract
Transcription of the hCRABPII gene is retinoid inducible in human skin keratinocytes (KC) but, surprisingly, not in cultured cells. The promoter for the gene harbors three putative nuclear receptor binding sites: DR5, upstream of the transcription start site; DR1 (DR1d), distal to the site; and DR1 (DR1p), a proximal variant. DR1d, but not DR1p, is conserved between human and mouse. Although DR5 has been found to be a retinoid receptor target in COS-1 cells, the function of DR1 remains unknown. We examined the functions of these DR in retinoid regulation of the hCRABPII promoter in human KC. In reporter gene assays, no significant retinoid response was observed in the promoter in cultured KC; however, overexpression of retinoid receptor heterodimers RARgamma x RXRalpha restored the response. Gel supershift assays showed that endogenous RARgamma x RXRalpha levels are much lower in cultured KC than in skin in vivo. Ligand-binding assays showed that cultured KC contain only one-third of the level of retinoic acid receptor (RAR) and one-eighth of the level of retinoid X receptor found in KC in skin. Deletion of the DR1d or DR5 sites reduced retinoid-induced promoter activity by 63% and 27%, respectively. Isolated DR1d and DR5 sites, but not DR1p, efficiently bound RARgamma-RXRalpha and conferred RAR-selective retinoid responsiveness on a heterologous promoter. These data indicate that: (i) the previously reported lack of retinoid regulation of endogenous hCRABPII gene transcription in cultured KC is likely due to insufficient levels of RARgamma x RXRalpha, but not their cofactors; (ii) the conserved DR1d site is the major functional target in RARgamma x RXRalpha regulation of hCRABPII in KC; (iii) the DR1p site is nonfunctional due to its lack of affinity for RARgamma x RXRalpha, although its half-sites share high sequence homology with the consensus retinoid receptor-binding half-site.
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Affiliation(s)
- W Di
- Department of Dermatology, University of Michigan, Ann Arbor 48109, USA
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Xiao JH, Feng X, Di W, Peng ZH, Li LA, Voorhees JJ. In all-trans retinoic acid (tRA)-induced epidermal hyperplasia, basal keratinocytes (KCs) are activated by heparin-binding EGF-like growth factor (HB-EGF) delivered exclusively from suprabasal KCs. J Dermatol Sci 1998. [DOI: 10.1016/s0923-1811(98)83042-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Feng X, Peng ZH, Di W, Li XY, Rochette-Egly C, Chambon P, Voorhees JJ, Xiao JH. Suprabasal expression of a dominant-negative RXR alpha mutant in transgenic mouse epidermis impairs regulation of gene transcription and basal keratinocyte proliferation by RAR-selective retinoids. Genes Dev 1997; 11:59-71. [PMID: 9000050 DOI: 10.1101/gad.11.1.59] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
To determine whether 9-cis retinoic acid receptors (RXRs) regulate the biological activity of all-trans retinoic acid (tRA) and its receptors (RARs) in skin, we have targeted a dominant-negative RXR alpha (dnRXR alpha) lacking transactivation function AF-2 to differentiated suprabasal keratinocytes in the epidermis of transgenic mice. Driven by the suprabasal-specific keratin-10 gene promoter, expression of dnRXR alpha severely reduced the ability of RAR-selective ligands tRA and CD367 to induce epidermal mRNA levels of the CRABPII, CRBPI, and CRBPII genes, which contain RA-responsive elements (RAREs) DR1 and/or DR2. It also reduced gene-specific, synergistic induction of CRBPI mRNA by a combination of CD367 and RXR-selective SR11237. Like endogenous RXR alpha, dnRXR alpha in epidermal nuclear extracts from the transgenic mice competitively formed heterodimers with endogenous RAR gamma on RAREs, suggesting that dnRXR alpha impairs retinoid signaling by competing with endogenous RAR gamma-RXR alpha heterodimers. Histologically, the epidermis of dnRXR alpha mice showed no detectable developmental abnormalities. Surprisingly, in adult animals, the suprabasal expression of dnRXR alpha significantly reduced the ability of topically applied tRA to stimulate proliferation of undifferentiated keratinocytes in the basal layer of epidermis. RXR-selective ligands alone had no detectable effects on both normal and transgenic mouse epidermis. Accordingly, we suggest that in vivo: (1) in suprabasal keratinocytes, retinoids regulate gene transcription via RAR-RXR heterodimers in which RAR confers a predominant ligand response, whereas RXR AF-2 is required for liganded RAR AF-2 to efficiently trans-activate target genes, and (2) this suprabasal RXR-assisted mechanism indirectly regulates proliferation of basal keratinocytes likely via intercellular signaling.
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Affiliation(s)
- X Feng
- Department of Dermatology, University of Michigan, Ann Arbor 48109-0314, USA
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Di W, Rowntree P, Sanche L. Energy-selective reaction of the hydrogen-passivated Si surface with carbon tetrafluoride via dissociative electron attachment. Phys Rev B Condens Matter 1995; 52:16618-16622. [PMID: 9981063 DOI: 10.1103/physrevb.52.16618] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Di W, Hong SY, Yan JH. [Pathological study on placenta from pregnancies with systemic lupus erythematosus]. Zhonghua Fu Chan Ke Za Zhi 1994; 29:708-10, 760. [PMID: 7712895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Pathological study on the placenta of 18 cases of pregnancy complicated with systemic lupus erythematosus (SLE) and 23 cases of normal pregnancy was done. The average weight and placenta-villi area ratio of the placenta from pregnancy with SLE were significantly lower than those of the normal (P < 0.05). Scanning under electron microscope showed the placental villi of the SLE group slender and branching little, with their ends bean-sprout looking and the surface covered with pin-point holes, even slitted masses. Immunohistologic examination indicated deposition of IgG, IgA, IgM, C3 on the villi capillary wall surface, which suggested damage of the placental function of the SLE gravidae by the immunologic compounds.
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Affiliation(s)
- W Di
- Ren Ji Hospital of Shanghai Second Medical University
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Di W, Pan JX, Hong SY. [Correlation between outcome of pregnancy and condition of disease at conception in systemic lupus erythematosus women]. Zhonghua Fu Chan Ke Za Zhi 1994; 29:414-6, 445-6. [PMID: 8001419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Thirty four pregnant patients with systemic lupus erythematosus (SLE) were divided into 3 groups: (1) primigravida, (2) previous history of spontaneous abortion, and (3) previous history of induced abortion. Outcomes of these pregnancies showed that the average birth weight in primigravida group was significantly higher than that in the other 2 groups (P < 0.05). Grouping by clinical status of SLE at conception, there were 4 kinds of situation: (1) remission, (2) controlled, (3) active, and (4) first onset. Patients with SLE of active stage had the lowest birth weight and gestational age babies (P < 0.05). The best time for conception in SLE women was at the time of remission or controlled stage, i.e. patients treated with prednisone in a dose of 5-15 mg/day for more than 6 months or without any medication for at least 1 year.
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Affiliation(s)
- W Di
- Renji Hospital, Shanghai Second Medical University
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Di W, Dhar S, Smith KE, Kevan SD. Angle-resolved photoemission study of the clean and hydrogen-covered Rh(111) surface. Phys Rev B Condens Matter 1994; 49:4821-4826. [PMID: 10011412 DOI: 10.1103/physrevb.49.4821] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Di W, Smith KE, Kevan SD. Angle-resolved photoemission study of the clean and hydrogen-covered Pt(111) surface. Phys Rev B Condens Matter 1992; 45:3652-3658. [PMID: 10001946 DOI: 10.1103/physrevb.45.3652] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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