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Chan SL, Chiang CL, Chok KSH, Lee AS, Tang RSY, Lim FMY, Lee KF, Tai AYP, Lee SWM, Lo RCL, Chan AWH, Mok FPT. Hong Kong consensus recommendations on the management of pancreatic ductal adenocarcinoma. Hong Kong Med J 2024; 30:147-162. [PMID: 38590158 DOI: 10.12809/hkmj2210476] [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] [Indexed: 04/10/2024] Open
Abstract
This project was undertaken to develop the first set of consensus statements regarding the management of pancreatic ductal adenocarcinoma (PDAC) in Hong Kong, with the goal of providing guidance to local clinicians. A multidisciplinary panel of experts discussed issues surrounding current PDAC management and reviewed evidence gathered in the local context to propose treatment recommendations. The experts used the Delphi approach to finalise management recommendations. Consensus was defined as ≥80% acceptance among all expert panel members. Thirty-nine consensus statements were established. These statements cover all aspects of PDAC management, including diagnosis, resectability criteria, treatment modalities according to resectability, personalised management based on molecular profiling, palliative care, and supportive care. This project fulfils the need for guidance regarding PDAC management in Hong Kong. To assist clinicians with treatment decisions based on varying levels of evidence and clinical experience, treatment options are listed in several consensus statements.
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Affiliation(s)
- S L Chan
- Department of Clinical Oncology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - C L Chiang
- Department of Clinical Oncology, Queen Mary Hospital, Hong Kong SAR, China
| | - K S H Chok
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - A S Lee
- Department of Clinical Oncology, Tuen Mun Hospital, Hong Kong SAR, China
| | - R S Y Tang
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - F M Y Lim
- Department of Oncology, Princess Margaret Hospital, Hong Kong SAR, China
- Department of Pathology, School of Clinical Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - K F Lee
- Department of Surgery, Prince of Wales Hospital, Hong Kong SAR, China
| | - A Y P Tai
- Department of Clinical Oncology, Queen Elizabeth Hospital, Hong Kong SAR, China
| | - S W M Lee
- Department of Pathology, School of Clinical Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - R C L Lo
- Department of Pathology, School of Clinical Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - A W H Chan
- Department of Anatomical and Cellular Pathology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - F P T Mok
- Department of Surgery and Combined Endoscopy Unit, Caritas Medical Centre, Hong Kong SAR, China
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Kubi JA, Brah AS, Cheung KMC, Lee YL, Lee KF, Sze SCW, Qiao W, Yeung KWK. A new osteogenic protein isolated from Dioscorea opposita Thunb accelerates bone defect healing through the mTOR signaling axis. Bioact Mater 2023; 27:429-446. [PMID: 37152710 PMCID: PMC10160600 DOI: 10.1016/j.bioactmat.2023.04.018] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 04/13/2023] [Accepted: 04/17/2023] [Indexed: 05/09/2023] Open
Abstract
Delayed bone defect repairs lead to severe health and socioeconomic impacts on patients. Hence, there are increasing demands for medical interventions to promote bone defect healing. Recombinant proteins such as BMP-2 have been recognized as one of the powerful osteogenic substances that promote mesenchymal stem cells (MSCs) to osteoblast differentiation and are widely applied clinically for bone defect repairs. However, recent reports show that BMP-2 treatment has been associated with clinical adverse side effects such as ectopic bone formation, osteolysis and stimulation of inflammation. Here, we have identified one new osteogenic protein, named 'HKUOT-S2' protein, from Dioscorea opposita Thunb. Using the bone defect model, we have shown that the HKUOT-S2 protein can accelerate bone defect repair by activating the mTOR signaling axis of MSCs-derived osteoblasts and increasing osteoblastic biomineralization. The HKUOT-S2 protein can also modulate the transcriptomic changes of macrophages, stem cells, and osteoblasts, thereby enhancing the crosstalk between the polarized macrophages and MSCs-osteoblast differentiation to facilitate osteogenesis. Furthermore, this protein had no toxic effects in vivo. We have also identified HKUOT-S2 peptide sequence TKSSLPGQTK as a functional osteogenic unit that can promote osteoblast differentiation in vitro. The HKUOT-S2 protein with robust osteogenic activity could be a potential alternative osteoanabolic agent for promoting osteogenesis and bone defect repairs. We believe that the HKUOT-S2 protein may potentially be applied clinically as a new class of osteogenic agent for bone defect healing.
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Affiliation(s)
- John Akrofi Kubi
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong (HKU), Hong Kong S.A.R., PR China
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, HKU-Shenzhen Hospital, Shenzhen, 518053, PR China
| | - Augustine Suurinobah Brah
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong (HKU), Hong Kong S.A.R., PR China
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, HKU-Shenzhen Hospital, Shenzhen, 518053, PR China
| | - Kenneth Man Chee Cheung
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong (HKU), Hong Kong S.A.R., PR China
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, HKU-Shenzhen Hospital, Shenzhen, 518053, PR China
| | - Yin Lau Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, HKU, 21 Sassoon Road, Hong Kong S.A.R, PR China
- Shenzhen Key Laboratory of Fertility Regulation, Reproductive Medicine Center, HKU- Shenzhen Hospital, Shenzhen, PR China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, HKU, 21 Sassoon Road, Hong Kong S.A.R, PR China
- Shenzhen Key Laboratory of Fertility Regulation, Reproductive Medicine Center, HKU- Shenzhen Hospital, Shenzhen, PR China
| | - Stephen Cho Wing Sze
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Kowloon Tong, Hong Kong S.A.R, PR China
- Golden Meditech Center for NeuroRegeneration Sciences, Hong Kong Baptist University, Kowloon Tong, Hong Kong S.A.R, PR China
| | - Wei Qiao
- Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, Hong Kong S.A.R, PR China
| | - Kelvin Wai-Kwok Yeung
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong (HKU), Hong Kong S.A.R., PR China
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, HKU-Shenzhen Hospital, Shenzhen, 518053, PR China
- Corresponding author.Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong (HKU), Hong Kong S.A.R, PR China
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Dong Y, Li J, Cao D, Zhong J, Liu X, Duan YG, Lee KF, Yeung WB, Lee CL, Chiu PN. Integrated microRNA and secretome analysis of human endometrial organoids reveal the miR-3194-5p/Aquaporin/S100A9 module in regulating trophoblast functions. Mol Cell Proteomics 2023; 22:100526. [PMID: 36889440 PMCID: PMC10119685 DOI: 10.1016/j.mcpro.2023.100526] [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: 03/16/2022] [Revised: 02/15/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
Successful placentation requires delicate communication between the endometrium and trophoblasts. The invasion and integration of trophoblasts into the endometrium during early pregnancy is crucial to placentation. Dysregulation of these functions is associated with various pregnancy complications, such as miscarriage and preeclampsia. The endometrial microenvironment has an important influence on trophoblast cell functions. The precise effect of the endometrial gland secretome on trophoblast functions remains uncertain. We hypothesized that the hormonal environment regulates the miRNA profile and secretome of the human endometrial gland, which subsequently modulates trophoblast functions during early pregnancy. Human endometrial tissues were obtained from endometrial biopsies with written consent. Endometrial organoids were established in matrix gel under defined culture conditions. They were treated with hormones mimicking the environment of the proliferative phase (Estrogen, E2), secretory phase (E2+Progesterone, P4), and early pregnancy (E2+P4+Human Chorionic Gonadotropin, hCG). miRNA-seq was performed on the treated organoids. Organoid secretions were also collected for mass spectrometric analysis. The viability and invasion/migration of the trophoblasts after treatment with the organoid secretome were determined by cytotoxicity assay and transwell assay, respectively. Endometrial organoids with the ability to respond to sex steroid hormones were successfully developed from human endometrial glands. By establishing the first secretome profiles and miRNA atlas of these endometrial organoids to the hormonal changes followed by trophoblast functional assays, we demonstrated that sex steroid hormones modulate aquaporin (AQP)1/9 and S100A9 secretions through miR-3194 activation in endometrial epithelial cells, which in turn enhanced trophoblast migration and invasion during early pregnancy. By using a human endometrial organoid model, we demonstrated for the first time that the hormonal regulation of the endometrial gland secretome is crucial to regulating the functions of human trophoblasts during early pregnancy. The study provides the basis for understanding the regulation of early placental development in humans.
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Affiliation(s)
- Yang Dong
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R.; Shenzhen Huarui Model Organisms Biotechnology Co., LTD, Shenzhen China
| | - Jianlin Li
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R.; The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Dandan Cao
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Jiangming Zhong
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R
| | - Xiaofeng Liu
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Yong-Gang Duan
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R.; The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - WilliamS B Yeung
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Cheuk-Lun Lee
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R.; The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China.
| | - PhilipC N Chiu
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China; Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R..
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Qiu Q, Li Y, Fong SW, Lee KC, Chen ACH, Ruan H, Lee KF, Li HWR, Ng EHY, Yeung WSB, Lee YL. Endometrial stromal cells from women with repeated implantation failure display impaired invasion towards trophoblastic spheroids. Reproduction 2023; 165:335-346. [PMID: 36656637 DOI: 10.1530/rep-22-0282] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 01/19/2023] [Indexed: 01/20/2023]
Abstract
In brief Implantation failure can occur even after the transfer of good-quality embryos. This study showed that the migration of human endometrial stromal cells towards embryonic trophoblasts is higher in women with live births in the first in vitro fertilization cycle than those with repeated implantation failure, suggesting that the chemotactic response of stroma cells is associated with successful pregnancy. Abstract The success rate of in vitro fertilization (IVF) remains limited in some women despite transfers of good-quality embryos in repeated attempts. There is no reliable tool for assessing endometrial receptivity. This study aimed to assess the interaction between decidualized human primary endometrial stromal cells (1°-EnSC) and human embryonic stem cell-derived trophoblastic spheroids (BAP-EB) and to compare the invasion ability of decidualized 1°-EnSC towards BAP-EB between women attaining live birth in the first IVF cycle and those with repeated implantation failure (RIF). The invasion of the decidualized human endometrial cell line (T-HESC) and 1°-EnSC towards BAP-EB was studied. Real-time quantitative PCR and immunocytochemistry were employed to determine the expression of decidualization markers at mRNA and protein levels, respectively. Trophoblast-like BAP-EB-96h, instead of early trophectoderm (TE)-like BAP-EB-48h, facilitated the invasion ability of decidualized T-HESC and decidualized 1°-EnSC. Human chorionic gonadotropin at supra-physiological levels promoted the invasiveness of decidualized 1°-EnSC. The extent of BAP-EB-96h-induced invasion was significantly stronger in decidualized 1°-EnSC from women who had a live birth in the first IVF cycle when compared to those with RIF. While no difference was found in the expression of decidualization markers, PRL and IGFBP1 among two groups of women, significantly lower HLA-B was detected in the non-decidualized and decidualized 1°-EnSC from women with RIF. Collectively, the findings suggested that the invasion of decidualized 1°-EnSC towards trophoblast-like BAP-EB-96h was higher in women who had a live birth in the first IVF cycle than those with RIF.
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Affiliation(s)
- Qi Qiu
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Yijing Li
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Sze Wan Fong
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Kai Chuen Lee
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Andy Chun Hang Chen
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, China.,Shenzhen Key Laboratory of Fertility Regulation, Reproductive Medicine Center, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - Hanzhang Ruan
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, China.,Shenzhen Key Laboratory of Fertility Regulation, Reproductive Medicine Center, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - Hang Wun Raymond Li
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, China.,Shenzhen Key Laboratory of Fertility Regulation, Reproductive Medicine Center, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China.,Department of Obstetrics and Gynaecology, Kwong Wah Hospital, Hong Kong Special Administrative Region, Hong Kong, China
| | - Ernest Hung Yu Ng
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, China.,Shenzhen Key Laboratory of Fertility Regulation, Reproductive Medicine Center, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China.,Department of Obstetrics and Gynaecology, Kwong Wah Hospital, Hong Kong Special Administrative Region, Hong Kong, China
| | - William Shu Biu Yeung
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, China.,Shenzhen Key Laboratory of Fertility Regulation, Reproductive Medicine Center, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - Yin Lau Lee
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, China.,Shenzhen Key Laboratory of Fertility Regulation, Reproductive Medicine Center, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
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5
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Jiang L, Cao D, Yeung WSB, Lee KF. Single-Cell RNA-Sequencing Reveals Interactions between Endometrial Stromal Cells, Epithelial Cells, and Lymphocytes during Mouse Embryo Implantation. Int J Mol Sci 2022; 24:ijms24010213. [PMID: 36613656 PMCID: PMC9820401 DOI: 10.3390/ijms24010213] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/20/2022] [Accepted: 12/20/2022] [Indexed: 12/25/2022] Open
Abstract
The decidualization of endometrial stromal cells (ESCs) is an essential process facilitating embryo implantation. However, the roles of non-decidualized and decidualized ESCs in regulating the microenvironment of a receptive endometrium remain unclear. We investigated single-cell transcriptomic changes in the uterus of a CD-1 mouse model at the post-implantation stage. The implantation and inter-implantation sites of the uteruses of pregnant mice at 4.5 and 5.5 days post-coitum were dissected for single-cell RNA sequencing. We identified eight cell types: epithelial cells, stromal cells, endothelial cells, mesothelial cells, lymphocytes, myocytes, myeloids, and pericytes. The ESC transcriptome suggests that the four ESC subtypes are involved in the extracellular remodeling during implantation. The trajectory plot of ESC subtypes indicates embryo implantation that involves a differentiation pathway from undifferentiated ESCs (ESC 1) to decidualized ESCs (DEC ESCs), with distinct signaling pathways between the ESC subtypes. Furthermore, the ligand-receptor analysis suggests that ESCs communicate with epithelial cells and immune cells through nectin and ICAM signaling. Collectively, both decidualized and non-decidualized ESCs may regulate the endometrial microenvironment for optimal endometrial receptivity and immune tolerance. This study provides insights on the molecular and cellular characteristics of mouse ESCs in modulating the epithelial and lymphocyte functions during early embryo implantation.
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Affiliation(s)
- Luhan Jiang
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Dandan Cao
- Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen 518053, China
| | - William S. B. Yeung
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
- Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen 518053, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
- Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen 518053, China
- Correspondence: ; Fax: +852-2816-1947
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Liu W, Chen J, Yang C, Lee KF, Lee YL, Chiu PCN, Zhang Y, Duan YG, Liu K, Yeung WSB. Expression of microRNA let-7 in cleavage embryos modulates cell fate determination and formation of mouse blastocysts†. Biol Reprod 2022; 107:1452-1463. [PMID: 36136742 DOI: 10.1093/biolre/ioac181] [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: 03/07/2022] [Revised: 06/30/2022] [Accepted: 09/14/2022] [Indexed: 12/24/2022] Open
Abstract
After fertilization, the zygote undergoes cell division. Up to the 8-cell stage, the blastomeres of mouse preimplantation embryos are morphologically identical. The first cell differentiation starts in the morula leading to the formation of trophectoderm cells and inner cell mass cells of the blastocyst. The regulation of the differentiation event and the formation of blastocysts are not fully known. Lethal-7 (let-7) is a family of evolutionarily conserved microRNAs. Here, we showed that the expression of let-7a and let-7g decreased drastically from the 1-cell stage to the 2-cell stage, remained low up to the 8-cell stage and slightly increased after the morula stage of mouse embryos. The expression of let-7 in the inner cell mass was higher than that in the trophectoderm. Forced expression of let-7a in embryos at the 1-cell and 4-cell stage inhibited blastocyst formation and downregulated the expression of CDX2 but maintained that of OCT4 in the trophectoderm. Forced expression of other let-7 isoforms exhibited similar inhibitory action on blastulation. On the other hand, inhibition of let-7a at the 4-cell stage and the 8-cell stage enhanced blastocyst formation. Co-injection of green fluorescent protein (GFP) mRNA (lineage tracer) with either precursor of let-7a (pre-let-7a) or scramble control into one blastomere of 2-cell embryos showed that ~75% of the resulting blastocysts possessed GFP+ cells in their inner cell mass only. The biased development towards the inner cell mass with forced expression of let-7 was reproduced in 2-cell chimeric embryos consisting of one wildtype blastomere and one GFP mRNA-injected blastomere from another 2-cell embryo carrying a doxycycline-inducible let-7g gene. Bioinformatics analysis indicated that Tead4 was a potential target of let-7. Let-7 bound to the 3'UTR of Tead4 and let-7 forced expression downregulated the expression of Tead4 in mouse blastocysts. Co-injection of Tead4 mRNA partially nullified the modulatory roles of let-7a in the inner cell mass cell fate. In conclusion, a high level of let-7 at the 2-cell stage favored the formation of the inner cell mass, whereas a low level of let-7 at the 4-cell to 8-cell stage enhanced blastocyst formation. Tead4 mediated the action of let-7 on the inner cell mass cell-fate determination.
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Affiliation(s)
- Weimin Liu
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.,Shenzhen Key Laboratory of Fertility Regulation, Center of Reproductive Medicine and Prenatal Diagnosis, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Jing Chen
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Chen Yang
- Shenzhen Key Laboratory of Fertility Regulation, Center of Reproductive Medicine and Prenatal Diagnosis, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Yin-Lau Lee
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Philip Chi-Ngong Chiu
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Yihui Zhang
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.,Shenzhen Key Laboratory of Fertility Regulation, Center of Reproductive Medicine and Prenatal Diagnosis, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Yong-Gong Duan
- Shenzhen Key Laboratory of Fertility Regulation, Center of Reproductive Medicine and Prenatal Diagnosis, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Kui Liu
- Shenzhen Key Laboratory of Fertility Regulation, Center of Reproductive Medicine and Prenatal Diagnosis, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China.,Department of Obstetrics and Gynaecology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - William Shu-Biu Yeung
- Shenzhen Key Laboratory of Fertility Regulation, Center of Reproductive Medicine and Prenatal Diagnosis, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China.,Department of Obstetrics and Gynaecology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
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7
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Sze SCW, Zhang L, Zhang S, Lin K, Ng TB, Ng ML, Lee KF, Lam JKW, Zhang Z, Yung KKL. Aberrant Transferrin and Ferritin Upregulation Elicits Iron Accumulation and Oxidative Inflammaging Causing Ferroptosis and Undermines Estradiol Biosynthesis in Aging Rat Ovaries by Upregulating NF-Κb-Activated Inducible Nitric Oxide Synthase: First Demonstration of an Intricate Mechanism. Int J Mol Sci 2022; 23:ijms232012689. [PMID: 36293552 PMCID: PMC9604315 DOI: 10.3390/ijms232012689] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 10/12/2022] [Accepted: 10/13/2022] [Indexed: 11/07/2022] Open
Abstract
We report herein a novel mechanism, unraveled by proteomics and validated by in vitro and in vivo studies, of the aberrant aging-associated upregulation of ovarian transferrin and ferritin in rat ovaries. The ovarian mass and serum estradiol titer plummeted while the ovarian labile ferrous iron and total iron levels escalated with age in rats. Oxidative stress markers, such as nitrite/nitrate, 3-nitrotyrosine, and 4-hydroxy-2-nonenal, accumulated in the aging ovaries due to an aberrant upregulation of the ovarian transferrin, ferritin light/heavy chains, and iron regulatory protein 2(IRP2)-mediated transferrin receptor 1 (TfR1). Ferritin inhibited estradiol biosynthesis in ovarian granulosa cells in vitro via the upregulation of a nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and p65/p50-induced oxidative and inflammatory factor inducible nitric oxide synthase (iNOS). An in vivo study demonstrated how the age-associated activation of NF-κB induced the upregulation of iNOS and the tumor necrosis factor α (TNFα). The downregulation of the keap1-mediated nuclear factor erythroid 2-related factor 2 (Nrf2), that induced a decrease in glutathione peroxidase 4 (GPX4), was observed. The aberrant transferrin and ferritin upregulation triggered an iron accumulation via the upregulation of an IRP2-induced TfR1. This culminates in NF-κB-iNOS-mediated ovarian oxi-inflamm-aging and serum estradiol decrement in naturally aging rats. The iron accumulation and the effect on ferroptosis-related proteins including the GPX4, TfR1, Nrf2, Keap1, and ferritin heavy chain, as in testicular ferroptosis, indicated the triggering of ferroptosis. In young rats, an intraovarian injection of an adenovirus, which expressed iron regulatory proteins, upregulated the ovarian NF-κB/iNOS and downregulated the GPX4. These novel findings have contributed to a prompt translational research on the ovarian aging-associated iron metabolism and aging-associated ovarian diseases.
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Affiliation(s)
- Stephen Cho Wing Sze
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Kowloon, Hong Kong SAR 999077, China
- Golden Meditech Center for NeuroRegeneration Sciences, Hong Kong Baptist University, Kowloon, Hong Kong SAR 999077, China
- Correspondence: (S.C.W.S.); (K.K.L.Y.); Tel.: +852-34112318 (S.C.W.S.); Tel.: +852-34117060 (K.K.L.Y.)
| | - Liang Zhang
- School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR 999077, China
| | - Shiqing Zhang
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Kowloon, Hong Kong SAR 999077, China
- Golden Meditech Center for NeuroRegeneration Sciences, Hong Kong Baptist University, Kowloon, Hong Kong SAR 999077, China
- JNU-HKUST Joint Laboratory for Neuroscience and Innovative Drug Research, College of Pharmacy, Jinan University, Guangzhou 999077, China
| | - Kaili Lin
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Kowloon, Hong Kong SAR 999077, China
- Golden Meditech Center for NeuroRegeneration Sciences, Hong Kong Baptist University, Kowloon, Hong Kong SAR 999077, China
- School of Public Health, Guangzhou Medical University, Guangzhou 999077, China
| | - Tzi Bun Ng
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR 999077, China
| | - Man Ling Ng
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Kowloon, Hong Kong SAR 999077, China
- Golden Meditech Center for NeuroRegeneration Sciences, Hong Kong Baptist University, Kowloon, Hong Kong SAR 999077, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, HKU, Pokfulam, Hong Kong SAR 999077, China
| | - Jenny Ka Wing Lam
- Department of Pharmaceutics, UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK
- Department of Pharmacology & Pharmacy, LKS Faculty of Medicine, HKU, Pokfulam, Hong Kong SAR 999077, China
| | - Zhang Zhang
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Kowloon, Hong Kong SAR 999077, China
- Golden Meditech Center for NeuroRegeneration Sciences, Hong Kong Baptist University, Kowloon, Hong Kong SAR 999077, China
| | - Ken Kin Lam Yung
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Kowloon, Hong Kong SAR 999077, China
- Golden Meditech Center for NeuroRegeneration Sciences, Hong Kong Baptist University, Kowloon, Hong Kong SAR 999077, China
- Correspondence: (S.C.W.S.); (K.K.L.Y.); Tel.: +852-34112318 (S.C.W.S.); Tel.: +852-34117060 (K.K.L.Y.)
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D’Silva M, Han HS, Liu R, Kingham TP, Choi GH, Syn NLX, Prieto M, Choi SH, Sucandy I, Chiow AKH, Marino MV, Efanov M, Lee JH, Sutcliffe RP, Chong CCN, Tang CN, Cheung TT, Pratschke J, Wang X, Park JO, Chan CY, Scatton O, Rotellar F, Troisi RI, D’Hondt M, Fuks D, Goh BKP, Gastaca M, Schotte H, De Meyere C, Lai EC, Krenzien F, Schmelzle M, Kadam P, Giglio M, Montalti R, Liu Q, Lee KF, Lee LS, Jang JY, Lim C, Labadie KP. Limited liver resections in the posterosuperior segments: international multicentre propensity score-matched and coarsened exact-matched analysis comparing the laparoscopic and robotic approaches. Br J Surg 2022; 109:1140-1149. [DOI: 10.1093/bjs/znac270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 04/22/2022] [Accepted: 07/14/2022] [Indexed: 12/07/2022]
Abstract
Abstract
Background
Limited liver resections (LLRs) for tumours located in the posterosuperior segments of the liver are technically demanding procedures. This study compared outcomes of robotic (R) and laparoscopic (L) LLR for tumours located in the posterosuperior liver segments (IV, VII, and VIII).
Methods
This was an international multicentre retrospective analysis of patients who underwent R-LLR or L-LLR at 24 centres between 2010 and 2019. Patient demographics, perioperative parameters, and postoperative outcomes were analysed; 1 : 3 propensity score matching (PSM) and 1 : 1 coarsened exact matching (CEM) were performed.
Results
Of 1566 patients undergoing R-LLR and L-LLR, 983 met the study inclusion criteria. Before matching, 159 R-LLRs and 824 L-LLRs were included. After 1 : 3 PSM of 127 R-LLRs and 381 L-LLRs, comparison of perioperative outcomes showed that median blood loss (100 (i.q.r. 40–200) versus 200 (100–500) ml; P = 0.003), blood loss of at least 500 ml (9 (7.4 per cent) versus 94 (27.6 per cent); P < 0.001), intraoperative blood transfusion rate (4 (3.1 per cent) versus 38 (10.0 per cent); P = 0.025), rate of conversion to open surgery (1 (0.8 per cent) versus 30 (7.9 per cent); P = 0.022), median duration of Pringle manoeuvre when applied (30 (20–46) versus 40 (25–58) min; P = 0.012), and median duration of operation (175 (130–255) versus 224 (155–300); P < 0.001) were lower in the R-LLR group compared with the L-LLR group. After 1 : 1 CEM of 104 R-LLRs with 104 L-LLRs, R-LLR was similarly associated with significantly reduced blood loss and a lower rate of conversion to open surgery.
Conclusion
Based on a matched analysis of well selected patients, both robotic and laparoscopic access could be undertaken safely with good outcomes for tumours in the posterosuperior liver segments.
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Affiliation(s)
- Mizelle D’Silva
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine , Seoul , Korea
| | - Ho Seong Han
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine , Seoul , Korea
| | - Rong Liu
- Faculty of Hepatopancreatobiliary Surgery , First Medical Centre of Chinese People’s Liberation Army General Hospital, Beijing , China
| | - Thomas Peter Kingham
- Department of Surgery, Memorial Sloan Kettering Cancer Center , New York, New York , USA
| | - Gi Hong Choi
- Division of Hepatopancreatobiliary Surgery, Department of Surgery, Severance Hospital, Yonsei University College of Medicine , Seoul , Korea
| | - Nicholas Li Xun Syn
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore , Singapore
| | - Mikel Prieto
- Hepatobiliary Surgery and Liver Transplantation Unit, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, University of the Basque Country , Bilbao , Spain
| | - Sung Hoon Choi
- Department of General Surgery, CHA Bundang Medical Centre, CHA University School of Medicine , Seongnam , Korea
| | - Iswanto Sucandy
- AdventHealth Tampa, Digestive Health Institute , Tampa, Florida , USA
| | - Adrian Kah Heng Chiow
- Hepatopancreatobiliary Unit, Department of Surgery, Changi General Hospital , Singapore
| | - Marco Vito Marino
- General Surgery Department, Azienda Ospedaliera Ospedali Riuniti Villa Sofia-Cervello, Palermo, Italy and Oncologic Surgery Department, P. Giaccone University Hospital , Palermo , Italy
| | - Mikhail Efanov
- Department of Hepato-Pancreato-Biliary Surgery, Moscow Clinical Scientific Centre , Moscow , Russia
| | - Jae Hoon Lee
- Department of Surgery, Division of Hepato-Biliary and Pancreatic Surgery, Asan Medical Centre, University of Ulsan College of Medicine , Seoul , Korea
| | - Robert Peter Sutcliffe
- Department of Hepatopancreatobiliary and Liver Transplant Surgery, University Hospitals Birmingham NHS Foundation Trust , Birmingham , UK
| | - Charing Ching Ning Chong
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, Chinese University of Hong Kong , New Territories Hong Kong , China
| | - Chung Ngai Tang
- Department of Surgery, Pamela Youde Nethersole Eastern Hospital , Hong Kong , China
| | - Tan To Cheung
- Department of Surgery, Queen Mary Hospital, University of Hong Kong , Hong Kong , China
| | - Johann Pratschke
- Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité-Universitätsmedizin, Corporate Member of Freie Universität Berlin, and Berlin Institute of Health , Berlin , Germany
| | - Xiaoying Wang
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Fudan University , Shanghai , China
| | - James Oh Park
- Department of Surgery, University of Washington Medical Center and Fred Hutchinson Cancer Center, Seattle , Washington , USA
| | - Chung Yip Chan
- Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital and Duke-National University Singapore Medical School , Singapore
| | - Olivier Scatton
- Department of Digestive, Hepatobiliary–Pancreatic and Liver Transplantation, Hôpital Pitie-Salpetriere, AP-HP, Sorbonne Université , Paris , France
| | - Fernando Rotellar
- Hepatopancreatobiliary and Liver Transplant Unit, Department of General Surgery, Clinica Universidad de Navarra, Universidad de Navarra and Institute of Health Research of Navarra (IdisNA) , Pamplona , Spain
| | - Roberto Ivan Troisi
- Department of Clinical Medicine and Surgery, Division of Hepatopancreatobiliary, Minimally Invasive and Robotic Surgery, Federico II University Hospital Naples , Naples , Italy
| | - Mathieu D’Hondt
- Department of Digestive and Hepatobiliary/Pancreatic Surgery, Groeninge Hospital , Kortrijk , Belgium
| | - David Fuks
- Department of Digestive, Oncologic and Metabolic Surgery, Institute Mutualiste Montsouris, Universite Paris Descartes , Paris , France
| | - Brian Kim Poh Goh
- Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital and Duke-National University Singapore Medical School , Singapore
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Fernando SR, Chen X, Cheng KW, Wong BP, Qi S, Jiang L, Kodithuwakku SP, Ng EH, Yeung WS, Lee KF. ACE inhibitors on ACE1, ACE2, and TMPRSS2 expression and spheroid attachment on human endometrial Ishikawa cells. Reprod Biol 2022; 22:100666. [PMID: 35688117 PMCID: PMC9172627 DOI: 10.1016/j.repbio.2022.100666] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/25/2022] [Accepted: 05/29/2022] [Indexed: 11/24/2022]
Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) enters cells via receptor angiotensin-converting enzyme 2 (ACE2) and co-receptor transmembrane serine protease 2 (TMPRSS2). However, patients with SARS-CoV-2 infection receiving ACE1 inhibitors had higher ACE2 expression and were prone to poorer prognostic outcomes. Until now, information on the expression of ACE1, ACE2, and TMPRSS2 in human endometrial tissues, and the effects of ACE inhibitors on embryo implantation are limited. We found human endometria expressed ACE1, ACE2, and TMPRSS2 transcripts and proteins. Lower ACE1, but higher ACE2 transcripts were found at the secretory than in the proliferative endometria. ACE1 proteins were weakly expressed in endometrial epithelial and stromal cells, whereas ACE2 and TMPRSS2 proteins were highly expressed in luminal and glandular epithelial cells. However, ACE1 and TMPRSS4 were highly expressed in receptive human endometrial epithelial (Ishikawa and RL95–2) cells, but not in non-receptive AN3CA and HEC1-B cells. Treatment of human endometrial epithelial cells with ACE1 (Captopril, Enalaprilat, and Zofenopril) or ACE2 (DX600) inhibitors did not significantly alter the expression of ACE1, ACE2 and TMPRSS2 transcripts and spheroid (blastocyst surrogate) attachment onto Ishikawa cells in vitro. Taken together, our data suggest that higher ACE2 expression was found in mid-secretory endometrium and the use of ACE inhibitors did not alter endometrial receptivity for embryo implantation.
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Affiliation(s)
- Sudini R Fernando
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region of China; Department of Animal Science, Faculty of Animal Science and Export Agriculture, Uva Wellassa University, Badulla, Sri Lanka
| | - Xian Chen
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region of China
| | - Kiu-Wai Cheng
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region of China
| | - Benancy Pc Wong
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region of China
| | - Shiwen Qi
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region of China
| | - Luhan Jiang
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region of China
| | - Suranga P Kodithuwakku
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region of China; Department of Animal Science, Faculty of Agriculture, The University of Peradeniya, Peradeniya, Sri Lanka
| | - Ernest Hy Ng
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region of China; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen, China
| | - William Sb Yeung
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region of China; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region of China; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen, China.
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10
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Affiliation(s)
- K Y Wong
- Department of Medicine and Geriatrics, Kwong Wah Hospital, Hong Kong
| | - K Y Yu
- Department of Medicine and Geriatrics, Kwong Wah Hospital, Hong Kong
| | - M W H Mak
- Department of Medicine and Geriatrics, Kwong Wah Hospital, Hong Kong
| | - K M Lee
- Department of Medicine and Geriatrics, Kwong Wah Hospital, Hong Kong
| | - K F Lee
- Department of Medicine and Geriatrics, Kwong Wah Hospital, Hong Kong
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Chen X, Fernando SR, Lee YL, Yeung WSB, Ng EHY, Li RHW, Lee KF. High-Throughput In Vitro Screening Identified Nemadipine as a Novel Suppressor of Embryo Implantation. Int J Mol Sci 2022; 23:ijms23095073. [PMID: 35563464 PMCID: PMC9103851 DOI: 10.3390/ijms23095073] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 04/29/2022] [Accepted: 05/01/2022] [Indexed: 02/01/2023] Open
Abstract
Current contraceptive methods interfere with folliculogenesis, fertilization, and embryo implantation by physical or hormonal approaches. Although hormonal contraceptive pills are effective in regulating egg formation, they are less effective in preventing embryo implantation. To explore the use of non-hormonal compounds that suppress embryo implantation, we established a high-throughput spheroid-endometrial epithelial cell co-culture assay to screen the Library of Pharmacologically Active Compounds (LOPAC) for compounds that affect trophoblastic spheroid (blastocyst surrogate) attachment onto endometrial epithelial Ishikawa cells. We identified 174 out of 1280 LOPAC that significantly suppressed BeWo spheroid attachment onto endometrial Ishikawa cells. Among the top 20 compounds, we found the one with the lowest cytotoxicity in Ishikawa cells, P11B5, which was later identified as Nemadipine-A. Nemadipine-A at 10 µM also suppressed BeWo spheroid attachment onto endometrial epithelial RL95-2 cells and primary human endometrial epithelial cells (hEECs) isolated from LH +7/8-day endometrial biopsies. Mice at 1.5 days post coitum (dpc) treated with a transcervical injection of 100 µg/kg Nemadipine-A or 500 µg/kg PRI-724 (control, Wnt-inhibitor), but not 10 µg/kg Nemadipine-A, suppressed embryo implantation compared with controls. The transcript expressions of endometrial receptivity markers, integrin αV (ITGAV) and mucin 1 (MUC1), but not β-catenin (CTNNB1), were significantly decreased at 2.5 dpc in the uterus of treated mice compared with controls. The reduction of embryo implantation by Nemadipine-A was likely mediated through suppressing endometrial receptivity molecules ITGAV and MUC1. Nemadipine-A is a potential novel non-hormonal compound for contraception.
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Affiliation(s)
- Xian Chen
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China; (X.C.); (S.R.F.); (Y.-L.L.); (W.S.-B.Y.); (E.H.-Y.N.); (R.H.-W.L.)
| | - Sudini Ranshaya Fernando
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China; (X.C.); (S.R.F.); (Y.-L.L.); (W.S.-B.Y.); (E.H.-Y.N.); (R.H.-W.L.)
- Department of Animal Science, Faculty of Animal Science and Export Agriculture, Uva Wellassa University, Badulla 90000, Sri Lanka
| | - Yin-Lau Lee
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China; (X.C.); (S.R.F.); (Y.-L.L.); (W.S.-B.Y.); (E.H.-Y.N.); (R.H.-W.L.)
- Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen 518000, China
| | - William Shu-Biu Yeung
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China; (X.C.); (S.R.F.); (Y.-L.L.); (W.S.-B.Y.); (E.H.-Y.N.); (R.H.-W.L.)
- Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen 518000, China
| | - Ernest Hung-Yu Ng
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China; (X.C.); (S.R.F.); (Y.-L.L.); (W.S.-B.Y.); (E.H.-Y.N.); (R.H.-W.L.)
- Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen 518000, China
| | - Raymond Hang-Wun Li
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China; (X.C.); (S.R.F.); (Y.-L.L.); (W.S.-B.Y.); (E.H.-Y.N.); (R.H.-W.L.)
- Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen 518000, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China; (X.C.); (S.R.F.); (Y.-L.L.); (W.S.-B.Y.); (E.H.-Y.N.); (R.H.-W.L.)
- Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen 518000, China
- Correspondence: ; Fax: +852-28161947
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Chen J, Liu W, Lee KF, Liu K, Wong BPC, Shu-Biu Yeung W. Overexpression of Lin28a induces a primary ovarian insufficiency phenotype via facilitation of primordial follicle activation in mice. Mol Cell Endocrinol 2022; 539:111460. [PMID: 34543700 DOI: 10.1016/j.mce.2021.111460] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 09/12/2021] [Accepted: 09/14/2021] [Indexed: 01/28/2023]
Abstract
Lin28a is an RNA binding protein and increasing evidence has indicated its role in regulating female fertility. Lin28a has been reported to be involved in ovarian follicle activation. However, its role and mechanisms in regulating primordial follicle activation have not yet been explored. To test whether overexpression of Lin28a activates ovarian primordial follicles, studies were conducted in wild type (WT) and Lin28a Tg mice. Female Lin28a Tg mice at 4-month old exhibited significantly smaller litter size and fewer ovulated oocytes when compared with the WT mice. By 6-month of age, these parameters in Lin28a Tg mice were less than 20% of the WT mice. At postnatal day (PD) 14, the number of primordial follicles was significantly decreased but the number of primary follicles was significantly increased in the transgenic mice. The number of primordial follicles, secondary and antral follicles in these mice were drastically reduced at PD21. In the ovary of Lin28a Tg mice, there were activation of Wnt/β-catenin signaling and its downstream mTOR pathway. Interestingly, overexpression of Lin28a, which can also act as transcriptional activator, activated Wnt signaling through enhancing the transcription of Wnt co-receptor LRP5. In conclusion, overexpression of Lin28a induced a primary ovarian insufficiency phenotype in long term via facilitating Wnt/β-catenin signaling leading to activation of primordial follicles.
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Affiliation(s)
- Jing Chen
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong, China.
| | - Weimin Liu
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong, China; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, China.
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong, China.
| | - Kui Liu
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong, China; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, China.
| | - Benancy P C Wong
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong, China.
| | - William Shu-Biu Yeung
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong, China; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, China.
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13
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Lee KF, Lo EYJ, Wong KKC, Fung AKY, Chong CCN, Wong J, Ng KKC, Lai PBS. Acute kidney injury following hepatectomy and its impact on long-term survival for patients with hepatocellular carcinoma. BJS Open 2021; 5:6380640. [PMID: 34601569 PMCID: PMC8487667 DOI: 10.1093/bjsopen/zrab077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 07/19/2021] [Indexed: 12/29/2022] Open
Abstract
Background Acute kidney injury (AKI) is increasingly being recognized after hepatectomy. This study aimed to identify factors predicting its occurrence and its impact on long-term outcome among patients with hepatocellular carcinoma (HCC). Methods This was a retrospective analysis of the incidence of AKI, factors predicting its occurrence, and its impact on patients undergoing hepatectomy between September 2007 and December 2018. A subgroup analysis included patients with histologically proven HCC. Results The incidence of AKI was 9.2 per cent in 930 patients. AKI was associated with increased mortality, morbidity, posthepatectomy liver failure (PHLF), and a longer hospital stay. On multivariable analysis, study period December 2013 to December 2018, diabetes mellitus, mean intraoperative BP below 72.1 mmHg, operative blood loss exceeding 377ml, high Model for End-Stage Liver Disease (MELD) score, and PHLF were predictive factors for AKI. Among 560 patients with HCC, hypertension, BP below 76.9 mmHg, blood loss greater than 378ml, MELD score, and PHLF were predictive factors. The 1-, 3-, and 5-year overall survival rates were 74.1, 59.2, and 51.6 per cent respectively for patients with AKI, and 91.8, 77.9, and 67.3 per cent for those without AKI. Corresponding 1-, 3-, and 5-year disease-free survival rates were 56.9, 42.3, and 35.4 per cent respectively in the AKI group, and 71.7, 54.5, and 46.2 per cent in the no-AKI group. AKI was an independent predictor of survival in multivariable analysis. Conclusion AKI is associated with longer hospital stay, and higher morbidity and mortality rates. It is also associated with shorter long-term survival among patients with HCC. To avoid AKI, control of blood loss and maintaining a reasonable BP (72–77 mmHg) during hepatectomy is important.
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Affiliation(s)
- K F Lee
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong, China
| | - E Y J Lo
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong, China
| | - K K C Wong
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong, China
| | - A K Y Fung
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong, China
| | - C C N Chong
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong, China
| | - J Wong
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong, China
| | - K K C Ng
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong, China
| | - P B S Lai
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong, China
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Lee KF, Kanter GS. All-optical serrodyne frequency shifter. Opt Express 2021; 29:26608-26617. [PMID: 34615092 DOI: 10.1364/oe.432242] [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] [Received: 05/24/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
We describe and demonstrate a method to induce a single-sideband serrodyne-like optical frequency shift in an all-fiber device. The time-varying phase-shift is generated by cross-phase modulation in a nonlinear fiber. Unlike electro-optic based serrodyne methods, which require a high-fidelity and high-bandwidth analog electrical ramp modulation signal, the proposed optical method uses a simple pulsed pump and can be made simultaneously both low-loss and polarization-independent. We demonstrate the technique by shifting a 1550 nm optical signal 150 MHz in a 1.5 dB insertion-loss polarization-independent frequency shifter and show a pathway to multi-GHz shifting frequencies.
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Fernando SR, Lee CL, Wong BP, Cheng KW, Lee YL, Chan MC, Ng EH, Yeung WS, Lee KF. Expression of membrane protein disulphide isomerase A1 (PDIA1) disrupt a reducing microenvironment in endometrial epithelium for embryo implantation. Exp Cell Res 2021; 405:112665. [PMID: 34111473 DOI: 10.1016/j.yexcr.2021.112665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 05/18/2021] [Accepted: 05/21/2021] [Indexed: 10/21/2022]
Abstract
Various proteins in the endometrial epithelium are differentially expressed in the receptive phase and play a pivotal role in embryo implantation. The Protein Disulphide Isomerase (PDI) family contains 21 members that function as chaperone proteins through their redox activities. Although total PDIA1 protein expression was high in four common receptive (Ishikawa and RL95-2) and non-receptive (HEC1-B and AN3CA) endometrial epithelial cell lines, significantly higher membrane PDIA1 expression was found in non-receptive AN3CA cells. In Ishikawa cells, oestrogen up-regulated while progesterone down-regulated membrane PDIA1 expression. Moreover, mid-luteal phase hormone treatment down-regulated membrane PDIA1 expression. Furthermore, oestrogen at 10 nM reduced spheroid attachment on Ishikawa cells. Interestingly, inhibition of PDIA1 function by bacitracin or 16F16 increased the spheroid attachment rate onto non-receptive AN3CA cells. Over-expression of PDIA1 in receptive Ishikawa cells reduced the spheroid attachment rate and significantly down-regulated integrin β3 levels, but not integrin αV and E-cadherin. Addition of reducing agent TCEP induced a sulphydryl-rich microenvironment and increased spheroid attachment onto AN3CA cells and human primary endometrial epithelial cells collected at LH+7/8 days. The luminal epithelial cells from human endometrial biopsies had higher PDIA1 protein expression in the proliferative phase than in the secretory phase. Our findings suggest oestrogen and progesterone regulate PDIA1 expression, resulting in the differential expressions of membrane PDIA1 protein to modulate endometrial receptivity. This suggests that membrane PDIA1 expression prior to embryo transfer could be used to predict endometrial receptivity and embryo implantation in women undergoing assisted reproduction treatment.
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Affiliation(s)
- Sudini R Fernando
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region; Department of Animal Science, Faculty of Animal Science & Export Agriculture, Uva Wellassa University, Badulla, 50000, Sri Lanka
| | - Cheuk-Lun Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Haiyuan 1st Road, Futian District, Shenzhen, 518053, China
| | - Benancy Pc Wong
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Kiu-Wai Cheng
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Yin-Lau Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Haiyuan 1st Road, Futian District, Shenzhen, 518053, China
| | - Ming-Chung Chan
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Ernest Hy Ng
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Haiyuan 1st Road, Futian District, Shenzhen, 518053, China
| | - William Sb Yeung
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Haiyuan 1st Road, Futian District, Shenzhen, 518053, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Haiyuan 1st Road, Futian District, Shenzhen, 518053, China.
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Wong KY, Mak MWH, Lee KM, Lee KF. A Case of Hyperreactio Luteinalis Complicated With Biochemical Hyperandrogenism, Symptomatic Hyperthyroidism and Preeclampsia. J Endocr Soc 2021. [PMCID: PMC8090445 DOI: 10.1210/jendso/bvab048.1579] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Background: Hyperreactio luteinalis (HL) describes the development of multiple large ovarian cysts during pregnancy, which regress post-partum. We report a case of HL complicated with preeclampsia, biochemical hyperandrogenism and hyperthyroidism. Clinical Case: A 31-year-old non-obese Chinese woman presented at 14-week gestation for lower abdominal pain. USG showed a single fetus, multiple ovarian cysts with largest measured 39.5ml. She complained of hand tremor, palpitation but no vomiting. She had no goiter, orbitopathy or family history of thyroid disease. fT4 was 23.1pmol/L (normal: 9.8-19.8pmol/L) and TSH was <0.01mIU/L. Anti-TG, anti-TPO and anti-TSHR antibodies were negative. She had history of silent miscarriage at 6-week gestation in her first pregnancy 2 years ago, USG showed normal ovaries at that time. Carbimazole was started at 16-week gestation for fT4 26.6pmol/L (normal: 9.4-18.5pmol/L). The largest ovarian cyst increased to 130ml at 19-week gestation. Serum β-hCG was 251926IU/L (normal: 4060-165400IU/L). HL with hCG-mediated hyperthyroidism was suspected. Serum total testosterone was 22.9nmol/L (normal: 2.2-10.7nmol/L) and serum androstenedione was 70.5nmol/L (normal: 0.28-9.81nmol/L). Ferriham Gallwey score was 4. fT4 fell to 13.8pmol/L (normal: 8.8-17.0pmol/L) but TSH remained suppressed. Carbimazole was stopped at 22-week gestation with no rebound in fT4 level. She developed preeclampsia and GDM at 27-week gestation. IUGR was evident despite decreasing β-hCG level and ovarian cyst shrinkage. She had emergency LSCS for severe preeclampsia at 33-week gestation. A 1510g female baby with normal genitalia was delivered. Placenta pathology was normal. 2 days after delivery, β-hCG fell to 7081IU/L; fT4 was 9.9pmol/L (normal: 9-19pmol/L) and TSH was 0.25mIU/L (normal: 0.35-4.5mIU/L). Clinical Lessons: 1) hCG stimulates growth of ovarian stroma and androgen secretion, results in virilization in 30% of HL patients. However, only 5% of patients had hyperthyroidism. LH and hCG are structurally similar and bind to the same receptor. In contrast, hCG is a weak agonist of TSH receptor: a hCG level of more than 100000IU/L is required to cause clinical thyrotoxicosis. Since 30% of HL patients have normal hCG level, this may explain the lower incidence of hyperthyroidism than hyperandrogenism. 2) Degree of maternal virilization does not correlate with testosterone level. Study by Condic et al. found significant overlap of testosterone levels in women with (13.7-197.5nmol/l) and without (6.2-37.3nmol/l) virilization. Genetic polymorphism of androgen receptor may account for the different clinical manifestation. Fetal virilization is rare, due to protective role of placental aromatase. 3) Elevated hCG in apparently “normal” singleton pregnancy may be due to poor placentation in early gestation and is a risk factor for preeclampsia and IUGR in HL patients.
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Affiliation(s)
- K Y Wong
- Kwong Wah Hospital, Hong Kong, Hong Kong
| | - M W H Mak
- Kwong Wah Hospital, Hong Kong, Hong Kong
| | - K M Lee
- Kwong Wah Hospital, Hong Kong, Hong Kong
| | - K F Lee
- Kwong Wah Hospital, Hong Kong, Hong Kong
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Fernando SR, Kottawatta KSA, Jiang L, Chen X, Cheng KW, Wong BPC, Ng EHY, Yeung WSB, Lee KF. Differential expression of protein disulfide isomerase (PDI) in regulating endometrial receptivity in humans. Reprod Biol 2021; 21:100498. [PMID: 33677360 DOI: 10.1016/j.repbio.2021.100498] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/10/2021] [Accepted: 02/12/2021] [Indexed: 12/17/2022]
Abstract
Estrogen and progesterone regulate the expression of endometrial proteins that determine endometrial receptivity for embryo implantation. The protein disulfide isomerase (PDI) family of proteins play a diverse role in regulating protein modification and redox function. Although the role of PDIs in cancer progression has been widely studied, their role in endometrial receptivity is largely unknown. We have focused on the expressions of PDIA1, PDIA2, PDIA3, PDIA4, PDIA5, and PDIA6 isoforms in endometrial epithelium under the influence of estrogen and progesterone and investigated their functional role in regulating endometrial receptivity. We found PDIA1-6 transcripts were expressed in endometrial epithelial Ishikawa, RL95-2, AN3CA, and HEC1-B cell lines. The expression of PDIA1 was low and PDIA5 was high in HEC1-B cells, whereas PDIA2 was high in both AN3CA and HEC1-B cells. In Ishikawa cells, estrogen (10 and 100 nM) upregulated PDIA1 and PDIA6, whereas estrogen (100 nM) downregulated PDIA4 and PDIA5; and progesterone (0.1 and 1 μM) downregulated transcript expressions of PDIA1-6. In human endometrial samples, significantly lowered transcript expressions of PDIA2 and PDIA5 were observed in the secretory phase compared with the proliferative phase, whereas no change was observed in the other studied transcripts throughout the cycle. Inhibition of PDI by PDI antibody (5 and 10 μg/mL) and PDI inhibitor bacitracin (1 and 5 mM) significantly increased the attachment of Jeg-3 spheroids onto AN3CA cells. Taken together, our study suggests a role of PDI in regulating endometrial receptivity and the possibility of using PDI inhibitors to enhance endometrial receptivity.
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Affiliation(s)
- Sudini Ranshaya Fernando
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region; Department of Animal Science, Faculty of Animal Science and Export Agriculture, Uva Wellassa University, Badulla, Sri Lanka
| | - Kottawattage Sanda Arunika Kottawatta
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region; Department of Veterinary Public Health and Pharmacology, Faculty of Veterinary Medicine and Animal Science, The University of Peradeniya, Peradeniya, Sri Lanka
| | - Luhan Jiang
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region
| | - Xian Chen
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region
| | - Kiu-Wai Cheng
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region
| | - Benancy Po-Chau Wong
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region
| | - Ernest Hung-Yu Ng
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen, China
| | - William Shu-Biu Yeung
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen, China.
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Wang Z, Kottawatta KSA, Kodithuwakku SP, Fernando TS, Lee YL, Ng EHY, Yeung WSB, Lee KF. The fungicide Mancozeb reduces spheroid attachment onto endometrial epithelial cells through downregulation of estrogen receptor β and integrin β3 in Ishikawa cells. Ecotoxicol Environ Saf 2021; 208:111606. [PMID: 33396126 DOI: 10.1016/j.ecoenv.2020.111606] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 10/30/2020] [Accepted: 11/01/2020] [Indexed: 06/12/2023]
Abstract
Mancozeb is a metal-containing ethylene bis-dithiocarbamate fungicide widely used in agriculture. Ethylene thiourea (ETU) is the primary metabolite of Mancozeb. Mancozeb has been associated with spontaneous abortions and abnormal menstruation in women. However, the effects of Mancozeb and ETU on embryo attachment remain unknown. The human blastocyst surrogate trophoblastic spheroids (JEG-3), endometrial epithelial surrogate adenocarcinoma cells (Ishikawa), or human primary endometrial epithelial cells (EECs) monolayer were used in the spheroid attachment models. Ishikawa and EECs were pretreated with different concentrations of Mancozeb or ETU for 48 h before the attachment assay. Gene expression profiles of Ishikawa cells were examined to understand how Mancozeb modulates endometrial receptivity with Microarray. The genes altered by Mancozeb were confirmed by qPCR and compared with the ETU treated groups. Mancozeb and ETU treatment inhibited cell viability at 10 μg/mL and 5000 µg/mL, respectively. At non-cytotoxic concentrations, Mancozeb at 3 μg/mL and ETU at 300 μg/mL reduced JEG-3 spheroid attachment onto Ishikawa cells. A similar result was observed with human primary endometrial epithelial cells. Mancozeb at 3 μg/mL modified the transcription of 158 genes by at least 1.5-fold in Microarray analysis. The expression of 10 differentially expressed genes were confirmed by qPCR. Furthermore, Mancozeb decreased spheroid attachment possibly through downregulating the expression of endometrial estrogen receptor β and integrin β3, but not mucin 1. These results were confirmed in both overexpression and knockdown experiments and co-culture assay. Mancozeb but not its metabolite ETU reduced spheroid attachment through modulating gene expression profile and decreasing estrogen receptor β and integrin β3 expression of endometrial epithelial cells.
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Affiliation(s)
- Ziyi Wang
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China; Department of Obstetrics and Gynaecology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Kottawattage S A Kottawatta
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China; Department of Veterinary Public Health and Pharmacology, Faculty of Veterinary Medicine and Animal Science, The University of Peradeniya, Peradeniya 20400, Sri Lanka
| | - Suranga P Kodithuwakku
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China; Department of Animal Science, Faculty of Agriculture, The University of Peradeniya, Peradeniya 20400, Sri Lanka
| | - Thevarathanthrige S Fernando
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Yin-Lau Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen, China
| | - Ernest H Y Ng
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen, China
| | - William S B Yeung
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen, China.
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Zhang YB, Lam KH, Chen LF, Wan H, Wang GC, Lee KF, Yip CW, Liu KH, Leung PH, Chan HY, Shi YG, Zhao J, Lao LX, Li YL, Zhang YB, Meng W. Chemical constituents from the thorns of Gleditsia sinensis and their cytotoxic activities. J Asian Nat Prod Res 2020; 22:1121-1129. [PMID: 32290704 DOI: 10.1080/10286020.2020.1731799] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 02/15/2020] [Indexed: 06/11/2023]
Abstract
A new aromatic glycoside (1) and a new natural product, neolignan (2), along with twenty-three known compounds (3-25), were isolated from the thorns of Gleditsia sinensis. According to the spectroscopic analyses (IR, UV, HRESIMS, NMR and ECD), the structures of isolates were elucidated. Herein, compounds 4, 6-8, 10-13, 15, 16, 18, 20, 23 were isolated from the plant of G. sinensis for the first time. Moreover, compounds 4, 6, 15 and 24 showed cytotoxic effects on human ovarian cancer (SKOV-3) cells with IC50 values of 24.83 ± 4.90, 48.86 ± 9.11, 80.13 ± 5.62, 15.38 ± 2.21 μM, respectively. [Formula: see text].
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Affiliation(s)
- Yu-Bo Zhang
- Yu Jin, Master of Gynaecology of Chinese Medicine & Integrative Medicine, Integrative Medicine, Integrative Medicine Workstation for Training and Research (Hong Kong Branch), School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Kar-Ho Lam
- Yu Jin, Master of Gynaecology of Chinese Medicine & Integrative Medicine, Integrative Medicine, Integrative Medicine Workstation for Training and Research (Hong Kong Branch), School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Li-Feng Chen
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Hei Wan
- Yu Jin, Master of Gynaecology of Chinese Medicine & Integrative Medicine, Integrative Medicine, Integrative Medicine Workstation for Training and Research (Hong Kong Branch), School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Guo-Cai Wang
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Chun-Wang Yip
- Yu Jin, Master of Gynaecology of Chinese Medicine & Integrative Medicine, Integrative Medicine, Integrative Medicine Workstation for Training and Research (Hong Kong Branch), School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Kwun-Hung Liu
- Yu Jin, Master of Gynaecology of Chinese Medicine & Integrative Medicine, Integrative Medicine, Integrative Medicine Workstation for Training and Research (Hong Kong Branch), School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Pak-Heng Leung
- Department of Pharmacology and Pharmacy, LKS Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Hai-Yong Chan
- Yu Jin, Master of Gynaecology of Chinese Medicine & Integrative Medicine, Integrative Medicine, Integrative Medicine Workstation for Training and Research (Hong Kong Branch), School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Yi-Gang Shi
- Yu Jin, Master of Gynaecology of Chinese Medicine & Integrative Medicine, Integrative Medicine, Integrative Medicine Workstation for Training and Research (Hong Kong Branch), School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Jia Zhao
- Yu Jin, Master of Gynaecology of Chinese Medicine & Integrative Medicine, Integrative Medicine, Integrative Medicine Workstation for Training and Research (Hong Kong Branch), School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Li-Xing Lao
- Yu Jin, Master of Gynaecology of Chinese Medicine & Integrative Medicine, Integrative Medicine, Integrative Medicine Workstation for Training and Research (Hong Kong Branch), School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Yao-Lan Li
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Yan-Bo Zhang
- Yu Jin, Master of Gynaecology of Chinese Medicine & Integrative Medicine, Integrative Medicine, Integrative Medicine Workstation for Training and Research (Hong Kong Branch), School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Wei Meng
- Yu Jin, Master of Gynaecology of Chinese Medicine & Integrative Medicine, Integrative Medicine, Integrative Medicine Workstation for Training and Research (Hong Kong Branch), School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
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Peng L, Leung EHW, So J, Mak PHS, Lee CL, Tan H, Lee KF, Chan SY. TSPYL1 regulates steroidogenic gene expression and male factor fertility in mice. F S Sci 2020; 1:115-123. [PMID: 35559922 DOI: 10.1016/j.xfss.2020.08.001] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/31/2020] [Accepted: 08/20/2020] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To determine the importance of testis-specific, Y-encoded-like 1 (TSPYL1) in survival and male factor fertility in mice. DESIGN Experimental prospective study. SETTING Research laboratories in a university medical faculty. ANIMALS We generated Tspyl1 knockout (KO) mouse lines by CRISPR/Cas9. The lines were maintained by pairing heterozygous mice to provide wild-type control and KO males for comparison. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Mendelian ratio, body and testis weight, histology, sperm motility, mating tests, pregnancy outcome, transcript levels of genes for testosterone production, and serum testosterone level. RESULT(S) A variable percentage of Tspyl1 KO mice survived beyond weaning depending on the genetic background. Growth around weaning was retarded in KO mice, but the testes-to-body weight ratio remained normal and complete spermatogenesis was revealed in testis histology. Sperm was collected from the cauda epididymis, and a significantly smaller percentage of sperm was progressively motile (22.3% ± 18.3%, n = 14 samples) compared with wild type (58.9% ± 11.5%, 11 samples). All 11 KO mice tested had defective mounting behavior. From 11 KO males paired with a total of 88 females, only one litter was born, compared with 53 litters sired by 11 age-matched wild-type males. Expression of Star, Cyp11a1, Cyp17a1, Hsd3b6, and Hsd17b3 in the KO testis was significantly reduced, while serum testosterone level was within the normal range. CONCLUSION(S) TSPYL1 is critical for survival and reproductive success in mice. TSPYL1 enhances the expression of key steroidogenic genes in the mouse testis.
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Affiliation(s)
- Lei Peng
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Eva Hin Wa Leung
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Joan So
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Priscilla Hoi Shan Mak
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Cheuk-Lun Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Huiqi Tan
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Siu Yuen Chan
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, People's Republic of China.
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21
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Lee KF, Mak MWH, Lao VWN, Yip HLK, Lau WY, Wong VTL. Immune-mediated necrotising myopathy is a rare statin-associated adverse effect: a case report. Hong Kong Med J 2020; 26:441-443. [PMID: 33089790 DOI: 10.12809/hkmj198226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023] Open
Affiliation(s)
- K F Lee
- Department of Medicine and Geriatrics, Kwong Wah Hospital, Hong Kong
| | - M W H Mak
- Department of Medicine and Geriatrics, Kwong Wah Hospital, Hong Kong
| | - V W N Lao
- Department of Medicine and Geriatrics, Kwong Wah Hospital, Hong Kong
| | - H L K Yip
- Department of Medicine and Geriatrics, Kwong Wah Hospital, Hong Kong
| | - W Y Lau
- Department of Medicine and Geriatrics, Kwong Wah Hospital, Hong Kong
| | - V T L Wong
- Department of Medicine and Geriatrics, Kwong Wah Hospital, Hong Kong
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22
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Vijayan M, Lee CL, Wong VHH, Wang X, Bai K, Wu J, Koistinen H, Seppälä M, Lee KF, Yeung WSB, Ng EHY, Chiu PCN. Decidual glycodelin-A polarizes human monocytes into a decidual macrophage-like phenotype through Siglec-7. J Cell Sci 2020; 133:jcs244400. [PMID: 32513821 DOI: 10.1242/jcs.244400] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 05/28/2020] [Indexed: 12/20/2022] Open
Abstract
Decidual macrophages constitute 20-30% of the total leukocytes in the uterus of pregnant women, regulating the maternal immune tolerance and placenta development. Abnormal number or activities of decidual macrophages (dMs) are associated with fetal loss and pregnancy complications, such as preeclampsia. Monocytes differentiate into dMs in a decidua-specific microenvironment. Despite their important roles in pregnancy, the exact factors that regulate the differentiation into dMs remain unclear. Glycodelin-A (PAEP, hereafter referred to as GdA) is a glycoprotein that is abundantly present in the decidua, and plays an important role in fetomaternal defense and placental development. It modulates the differentiation and activity of several immune cell types residing in the decidua. In this study, we demonstrated that GdA induces the differentiation of human monocytes into dM-like phenotypes in terms of transcriptome, cell surface marker expression, secretome, and regulation of trophoblast and endothelial cell functions. We found that Sialic acid-binding Ig-like lectin 7 (Siglec-7) mediates the binding and biological actions of GdA in a sialic acid-dependent manner. We, therefore, suggest that GdA, induces the polarization of monocytes into dMs to regulate fetomaternal tolerance and placental development.
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Affiliation(s)
- Madhavi Vijayan
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R
| | - Cheuk-Lun Lee
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Vera H H Wong
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R
| | - Xia Wang
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R
| | - Kungfeng Bai
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Jian Wu
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Hannu Koistinen
- Department of Clinical Chemistry and Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, 00029 HUS Helsinki, Finland
| | - Markku Seppälä
- Department of Clinical Chemistry and Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, 00029 HUS Helsinki, Finland
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - William S B Yeung
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Ernest H Y Ng
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Philip C N Chiu
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
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Akthar I, Wang Z, Wijayagunawardane MPB, Ratnayake CJ, Siriweera EH, Lee KF, Kodithuwakku SP. In vitro and in vivo impairment of embryo implantation by commonly used fungicide Mancozeb. Biochem Biophys Res Commun 2020; 527:42-48. [PMID: 32446389 DOI: 10.1016/j.bbrc.2020.04.051] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 04/03/2020] [Accepted: 04/12/2020] [Indexed: 10/24/2022]
Abstract
The fungicide Mancozeb is an endocrine-disrupting chemical and the mode of action of Mancozeb on embryo implantation is largely unknown. Mancozeb (1 and 3 μg/ml) significantly reduced Jeg-3 trophoblastic spheroids attachment to endometrial epithelial Ishikawa cells. Mancozeb treatment from gestation day (GD) 1 to GD8 or from GD4 to GD8 significantly lowered the number of implantation sites with higher incidence of morphological abnormalities in the reproductive tissues. However, these were not seen in the treatment from GD1 to GD4. Mancozeb at 30 mg/kg BW/d did not alter the expression of p53, COX-2, or PGFS transcripts in the uterus, but down-regulated the PGES transcript and protein. Mancozeb treatment in human endometrial stromal cells did not alter the decidualization response, but the morphological transformation was impaired. Taken together, exposure to Mancozeb affected embryo implantation probably through the modulation of decidualization and to delineate the exact mode of action needs further investigations.
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Affiliation(s)
- Ihshan Akthar
- Department of Animal Science, Faculty of Agriculture, University of Peradeniya, Peradeniya, 20400, Sri Lanka; Postgraduate Institute of Agriculture, University of Peradeniya, Peradeniya, 20400, Sri Lanka
| | - Ziyi Wang
- Department of Obstetrics and Gynaecology LKS Faculty of Medicine, The University of Hong Kong, HKSAR, China
| | - Missaka P B Wijayagunawardane
- Department of Animal Science, Faculty of Agriculture, University of Peradeniya, Peradeniya, 20400, Sri Lanka; Postgraduate Institute of Agriculture, University of Peradeniya, Peradeniya, 20400, Sri Lanka
| | - Chathura J Ratnayake
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University of Peradeniya, Peradeniya, 20400, Sri Lanka
| | - Eranga H Siriweera
- Department of Pathology, Faculty of Medicine, University of Peradeniya, Peradeniya, 20400, Sri Lanka
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology LKS Faculty of Medicine, The University of Hong Kong, HKSAR, China; Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong Shenzhen Hospital, The University of Hong Kong, Shenzhen, China.
| | - Suranga P Kodithuwakku
- Department of Animal Science, Faculty of Agriculture, University of Peradeniya, Peradeniya, 20400, Sri Lanka; Postgraduate Institute of Agriculture, University of Peradeniya, Peradeniya, 20400, Sri Lanka.
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Fan H, Jiang L, Lee YL, Wong CKC, Ng EHY, Yeung WSB, Lee KF. Bisphenol compounds regulate decidualized stromal cells in modulating trophoblastic spheroid outgrowth and invasion in vitro†. Biol Reprod 2020; 102:693-704. [PMID: 31742322 DOI: 10.1093/biolre/ioz212] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 10/14/2019] [Accepted: 11/12/2019] [Indexed: 12/24/2022] Open
Abstract
Bisphenol A (BPA) is commonly found in epoxy resins used in the manufacture of plastic coatings in food packaging and beverage cans. There is a growing concern about BPA as a weak estrogenic compound that can affect human endocrine function. Chemicals structurally similar to BPA, such as bisphenol F (BPF) and bisphenol S (BPS), have been developed as substitutes in the manufacturing industry. Whether these bisphenol substitutes have adverse effects on human endocrine and reproductive systems remains largely unknown. This study investigated the effects of BPA, BPF, and BPS on regulating the function of decidualized human primary endometrial stromal cells on trophoblast outgrowth and invasion by indirect and direct co-culture models. All three bisphenols did not affect the stromal cell decidualization process. However, BPA- and BPF-treated decidualized stromal cells stimulated trophoblastic spheroid invasion in the indirect coculture model. The BPA-treated decidualized stromal cells had upregulated expressions of several invasion-related molecules including leukemia inhibitory factor (LIF), whereas both BPA- and BPF-treated decidualized stromal cells had downregulated expressions of anti-invasion molecules including plasminogen activator inhibitor type 1 (PAI-1) and tumor necrosis factor (TNFα) . Taken together, BPA and BPF altered the expression of invasive and anti-invasive molecules in decidualized stromal cells modulating its function on trophoblast outgrowth and invasion, which could affect the implantation process and subsequent pregnancy outcome.
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Affiliation(s)
- Hongjie Fan
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Luhan Jiang
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Yin-Lau Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Chris K C Wong
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Hong Kong, China
| | - Ernest H Y Ng
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.,Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen 518053, China
| | - William S B Yeung
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.,Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen 518053, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.,Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen 518053, China
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Chong CCN, Lok HT, Fung AKY, Fong AKW, Cheung YS, Wong J, Lee KF, Lai PBS. Robotic versus laparoscopic hepatectomy: application of the difficulty scoring system. Surg Endosc 2019; 34:2000-2006. [PMID: 31312961 DOI: 10.1007/s00464-019-06976-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [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: 12/05/2018] [Accepted: 07/09/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND The development of robotic system may help to relieve the difficulties encountered during laparoscopic hepatectomy. A difficulty scoring system (DSS) was developed to assess the difficulty of various laparoscopic liver resection procedures. The aim of this study is to explore if the DSS is applicable in robotic hepatectomy and to compare the outcomes of robotic hepatectomy and laparoscopic hepatectomy among different difficulty levels. METHODS Clinical data from all consecutive patients who underwent robotic and conventional laparoscopic hepatectomy at the Prince of Wales Hospital, Hong Kong, were prospectively collected and reviewed. The difficulty level of operations was graded using the DSS. Perioperative outcomes of robotic and conventional laparoscopic hepatectomy were compared at each difficulty level. RESULTS A total of 107 and 94 patients underwent robotic and laparoscopic hepatectomy during the study period, respectively. Among them, 16 and 2 patients were operated for recurrent pyogenic cholangitis, respectively, and were excluded because no mark for tumour location can be assigned. For robotic hepatectomy, a higher DSS was significantly correlated with higher minor complication rate (p = 0.001), more intraoperative blood loss (p = 0.002), longer operation time (p < 0.001) and longer post-operative hospital stay (p < 0.001). The mean DSS scores of robotic and laparoscopic hepatectomy were 4.5 and 3.6, respectively. (p = 0.004). For cases with low (DSS 1-3) and intermediate (DSS 4-6) difficulty level, there was no significant difference in operative blood loss, operation time and overall complications rate. Only 2 cases (2.2%) with high difficulty level were operated with laparoscopic approach while 20% of patients operated with robotic approach had DSS > 6. CONCLUSIONS DSS significantly correlated with surgical outcomes in patient who underwent robotic hepatectomy. Perioperative outcomes following robotic and conventional laparoscopic hepatectomy were similar in cases with low and intermediate difficulty. However, robotic system allowed minimally invasive approach in cases with higher difficulty level.
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Affiliation(s)
- Charing C N Chong
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - H T Lok
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Andrew K Y Fung
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Anthony K W Fong
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Y S Cheung
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - John Wong
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - K F Lee
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Paul B S Lai
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China.
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Chong CCN, Chung WY, Cheung YS, Fung AKY, Fong AKW, Lok HT, Wong J, Lee KF, Chan SKC, Lai PBS. Enhanced recovery after surgery for liver resection. Hong Kong Med J 2019; 25:94-101. [PMID: 30919808 DOI: 10.12809/hkmj187656] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
INTRODUCTION Enhanced recovery after surgery (ERAS) reduces postoperative length of hospital stay and patient stress response to liver surgery. The aim of the present study was to evaluate the efficacy and feasibility of an ERAS programme for liver resection. METHODS A multidisciplinary ERAS protocol was implemented for both open and laparoscopic liver resection in a tertiary hospital in Hong Kong. The clinical outcomes of patients who underwent liver resection and underwent the ERAS perioperative programme were compared with those who received a conventional perioperative programme between September 2015 and July 2016. Propensity score matching analysis was used to minimise background differences. RESULTS A total of 20 patients who underwent liver resection were recruited to the ERAS programme. Their clinical outcomes were compared with another 20 patients who received hepatectomy under a conventional perioperative programme after propensity score matching. The ERAS programme was associated with a significantly shorter length of hospital stay (P=0.033) without an increase in complication rates in patients who underwent open liver resection. There was no such significant association in patients who underwent laparoscopic liver resection. No patients required readmission in this cohort. CONCLUSIONS The ERAS perioperative programme for liver resection is safe and feasible. It significantly shortened the hospital stay after open liver resection but not after laparoscopic liver resection.
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Affiliation(s)
- C C N Chong
- Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - W Y Chung
- Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Y S Cheung
- Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - A K Y Fung
- Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - A K W Fong
- Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - H T Lok
- Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - J Wong
- Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - K F Lee
- Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - S K C Chan
- Department of Anaesthesia, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - P B S Lai
- Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
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Liu JY, Chen XX, Chen HY, Shi J, Leung GPH, Tang SCW, Lao LX, Yip HKF, Lee KF, Sze SCW, Zhang ZJ, Zhang KY. Downregulation of Aquaporin 9 Exacerbates Beta-amyloid-induced Neurotoxicity in Alzheimer’s Disease Models In vitro and In vivo. Neuroscience 2018; 394:72-82. [DOI: 10.1016/j.neuroscience.2018.09.016] [Citation(s) in RCA: 9] [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: 04/07/2018] [Revised: 09/12/2018] [Accepted: 09/17/2018] [Indexed: 11/16/2022]
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Abstract
Introduction Management of liver injury is challenging and evolving. The aim of this article is to review the outcome of traumatic liver injury in Chinese people in Hong Kong. Materials & methods Records of 40 patients with hepatic injury who received treatment at the Prince of Wales Hospital between December 2000 and May 2005 were reviewed. Demographic data, severity of liver injury, Injury Severity Score (ISS), haemodynamic status and Glasgow Coma Scale (GCS) score on admission, investigations made, concomitant injuries, management scheme, and outcome of patients were analysed. Results There were 23 male and 17 female patients with a mean age of 31.3 (SD=15.4) years. Road traffic accident was the most common injury mechanism (65%). Half of the patients were treated by non-operative management (NOM). None of them required surgery during subsequent management. Patients in the operative management (OM) group had a significantly higher ISS (p=0.026), but there was no significant difference in the mortality rate between the OM and NOM groups. Patients with stable haemodynamic status and who were treated non-operatively had a significantly shorter hospital stay (p=0.006). High grade liver injury (OR=8.0, 95% CI=1.2 to 53.8, p=0.03) and ISS greater than 25 (OR=21.6, 95% CI=2.0 to 225.3, p=0.01) were independent risk factors for mortality on multivariate analysis. Conclusions Non-operative management of liver injury can be safely accomplished in haemodynamically stable patients, with the possible benefit of a shorter hospital stay.
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Affiliation(s)
| | | | | | - TH Rainer
- Prince of Wales Hospital, Accident and Emergency Medicine Academic Unit, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
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Mak CSL, Yung MMH, Hui LMN, Leung LL, Liang R, Chen K, Liu SS, Qin Y, Leung THY, Lee KF, Chan KKL, Ngan HYS, Chan DW. MicroRNA-141 enhances anoikis resistance in metastatic progression of ovarian cancer through targeting KLF12/Sp1/survivin axis. Mol Cancer 2017; 16:11. [PMID: 28095864 PMCID: PMC5240442 DOI: 10.1186/s12943-017-0582-2] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 01/03/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Cancer metastasis is determined by the formation of the metastatic niche and the ability of cancer cells to adapt to microenvironmental stresses. Anoikis resistance is a fundamental feature of metastatic cancer cell survival during metastatic cancer progression. However, the mechanisms underlying anoikis resistance in ovarian cancer are still unclear. METHODS Expressions of miRNA-141 and its downstream targets were evaluated by qPCR, Western blotting, Immunohistochemical (IHC) and in situ hybridization (ISH) assays. The luciferase assays were used to prove KLF12 as the downstream target of miR-141. The cDNA microarray and apoptotic protein arrays were used to identify the targets of miR-141 and KLF12. The competition of KLF12 and Sp1 on survivin promoter was examined by ChIP assay. IHC analysis on ovarian cancer tissue array was used to evaluate the expressions of KLF12 and miR-141 and to show the clinical relevance. The functional studies were performed by in vitro and in vivo tumorigenic assays. RESULTS Enforced expression of miR-141 promotes, while knockdown of miR-141 expression inhibits, cell proliferation, anchorage-independent capacity, anoikis resistance, tumor growth and peritoneal metastases of ovarian cancer cells. Bioinformatics and functional analysis identified that Kruppel-related zinc finger protein AP-2rep (KLF12) is directly targeted by miR-141. Consistent with this finding, knockdown of KLF12 phenocopied the effects of miR-141 overexpression in ovarian cancer cells. In contrast, restoration of KLF12 in miR-141-expressing cells significantly attenuated anoikis resistance in ovarian cancer cells via interfering with Sp1-mediated survivin transcription, which inhibits the intrinsic apoptotic pathway and is crucial for ovarian cancer cell survival, anoikis resistance and peritoneal metastases. Immunohistochemical (IHC) and in situ hybridization (ISH) assays confirmed that miRNA-141 expression is inversely correlated with KLF12 expression and significantly associated with advanced ovarian cancers accompanied with distal metastases, underscoring the clinical relevance of our findings. CONCLUSIONS Our data identify a novel signaling axis of miR-141/KLF12/Sp1/survivin in enhancing anoikis resistance and likely serves as a potential therapeutic target for metastatic ovarian cancer.
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Affiliation(s)
- Celia S L Mak
- Department of Obstetrics and Gynaecology, L747 Laboratory Block, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong SAR, People's Republic of China
| | - Mingo M H Yung
- Department of Obstetrics and Gynaecology, L747 Laboratory Block, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong SAR, People's Republic of China
| | - Lynn M N Hui
- Department of Obstetrics and Gynaecology, L747 Laboratory Block, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong SAR, People's Republic of China
| | - Leanne L Leung
- Department of Obstetrics and Gynaecology, L747 Laboratory Block, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong SAR, People's Republic of China
| | - Rui Liang
- Department of Obstetrics and Gynaecology, L747 Laboratory Block, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong SAR, People's Republic of China
| | - Kangmei Chen
- Department of Obstetrics and Gynaecology, L747 Laboratory Block, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong SAR, People's Republic of China
| | - Stephanie S Liu
- Department of Obstetrics and Gynaecology, L747 Laboratory Block, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong SAR, People's Republic of China
| | - Yiming Qin
- School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong SAR, People's Republic of China
| | - Thomas H Y Leung
- Department of Obstetrics and Gynaecology, L747 Laboratory Block, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong SAR, People's Republic of China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, L747 Laboratory Block, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong SAR, People's Republic of China
| | - Karen K L Chan
- Department of Obstetrics and Gynaecology, L747 Laboratory Block, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong SAR, People's Republic of China
| | - Hextan Y S Ngan
- Department of Obstetrics and Gynaecology, L747 Laboratory Block, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong SAR, People's Republic of China
| | - David W Chan
- Department of Obstetrics and Gynaecology, L747 Laboratory Block, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong SAR, People's Republic of China.
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Wong AM, Wa YL, Cheung YC, Ng SH, Lee KF. CT features of mediastinal lymphangiohemangioma associated with superior vena cava ectasia: A case report. Acta Radiol 2016; 41:429-31. [PMID: 11016760 DOI: 10.1080/028418500127345866] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
We present a case of mediastinal mesenchymal tumor in a 53-year-old woman with a 1-month history of chest tightness. A histological diagnosis of lymphangiohemangioma was obtained by excisional biopsy. CT findings are reported with emphasis on its association with intratumoral superior vena cava ectasia.
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Affiliation(s)
- A M Wong
- Department of Diagnostic Radiology, Chang Gung Memorial Hospital, Tao Yuan Hsien, Taiwan, Republic of China
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Vijayan M, Lee CL, Lee KF, Chiu PC. Decidual Glycodelin-A regulates the phenotype and functions of human macrophages. J Reprod Immunol 2016. [DOI: 10.1016/j.jri.2016.04.228] [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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Vijayan M, Lee CL, Lee KF, Chiu PC. Decidual Glycodelin-A Regulates the Phenotype and Functions of Human Macrophages. J Reprod Immunol 2016. [DOI: 10.1016/j.jri.2016.04.060] [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: 10/21/2022]
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Choi KH, Ling CW, Lee KF, Tsang YH, Fung KH. Simultaneous multi-frequency topological edge modes between one-dimensional photonic crystals. Opt Lett 2016; 41:1644-1647. [PMID: 27192308 DOI: 10.1364/ol.41.001644] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We show theoretically that, in the limit of weak dispersion, one-dimensional binary centrosymmetric photonic crystals can support topological edge modes in all photonic bandgaps. By analyzing their bulk band topology, these "harmonic" topological edge modes can be designed in a way that they exist at all photonic bandgaps opened at the center of the Brillouin zone, at all gaps opened at the zone boundaries, or both. The results may suggest a new approach to achieve robust multi-frequency coupled modes for applications in nonlinear photonics, such as frequency upconversion.
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Liu JY, Chen XX, Tang SCW, Sze SCW, Feng YB, Lee KF, Zhang KYB. Chinese medicines in the treatment of experimental diabetic nephropathy. Chin Med 2016; 11:6. [PMID: 26913057 PMCID: PMC4765093 DOI: 10.1186/s13020-016-0075-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2014] [Accepted: 01/26/2016] [Indexed: 12/22/2022] Open
Abstract
Diabetic nephropathy (DN) is a severe micro vascular complication accompanying diabetes mellitus that affects millions of people worldwide. End-stage renal disease occurs in nearly half of all DN patients, resulting in large medical costs and lost productivity. The course of DN progression is complicated, and effective and safe therapeutic strategies are desired. While the complex nature of DN renders medicines with a single therapeutic target less efficacious, Chinese medicine, with its holistic view targeting the whole system of the patient, has exhibited efficacy for DN management. This review aims to describe the experimental evidence for Chinese medicines in DN management, with an emphasis on the underlying mechanisms, and to discuss the combined use of herbs and drugs in DN treatment.
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Affiliation(s)
- Jing-Yi Liu
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 10 Sassoon Road, Hong Kong, People's Republic of China
| | - Xiao-Xin Chen
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 10 Sassoon Road, Hong Kong, People's Republic of China
| | - Sydney Chi-Wai Tang
- Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 10 Sassoon Road, Hong Kong, People's Republic of China
| | - Stephen Cho-Wing Sze
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 10 Sassoon Road, Hong Kong, People's Republic of China
| | - Yi-Bin Feng
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 10 Sassoon Road, Hong Kong, People's Republic of China
| | - Kai-Fai Lee
- Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 10 Sassoon Road, Hong Kong, People's Republic of China
| | - Kalin Yan-Bo Zhang
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 10 Sassoon Road, Hong Kong, People's Republic of China
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35
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Cheung CL, Sing CW, Tang CSM, Cheng VKF, Pirmohamed M, Choi CH, Hung CS, Lau EYF, Lee KF, Mak MWH, Leung JYY, Wong TW, Ho AYY, Chan KW, Hung VHF, Tam V, Siu SC, Pang HK, Wat WZM, Lee HHY, Chung CT, Hue RSM, Sham PC, Cheung BMY, Wong ICK, Tan KCB, Kung AWC. HLA-B*38:02:01predicts carbimazole/methimazole-induced agranulocytosis. Clin Pharmacol Ther 2016; 99:555-61. [PMID: 26599303 DOI: 10.1002/cpt.309] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 11/17/2015] [Indexed: 12/30/2022]
Affiliation(s)
- C-L Cheung
- Pharmacogenomics and Precision Therapeutics Laboratory, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
- The State Key Laboratory of Pharmaceutical Biotechnology, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
- Department of Medicine, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
- Centre for Genomic Sciences, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
| | - C-W Sing
- Pharmacogenomics and Precision Therapeutics Laboratory, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
| | - CSM Tang
- Centre for Genomic Sciences, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
- Department of Psychiatry, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
| | - VKF Cheng
- Pharmacogenomics and Precision Therapeutics Laboratory, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
| | - M Pirmohamed
- Department of Molecular and Clinical Pharmacology; The University of Liverpool; United Kingdom
- Royal Liverpool and Broadgreen University Hospital NHS Trust; Liverpool United Kingdom
| | - C-H Choi
- Department of Medicine; Queen Elizabeth Hospital; Hong Kong China
| | - C-S Hung
- Department of Medicine and Geriatrics; United Christian Hospital; Hong Kong China
| | - EY-F Lau
- Department of Medicine; Pamela Youde Nethersole Eastern Hospital; Hong Kong China
| | - KF Lee
- Department of Medicine and Geriatrics; Kwong Wah Hospital; Hong Kong China
| | - MW-H Mak
- Department of Medicine and Geriatrics; Kwong Wah Hospital; Hong Kong China
| | - JYY Leung
- Department of Medicine and Geriatrics; Ruttonjee & Tang Shiu Kin Hospitals; Hong Kong China
| | - T-W Wong
- Department of Medicine and Geriatrics; Ruttonjee & Tang Shiu Kin Hospitals; Hong Kong China
| | - AYY Ho
- Department of Medicine and Geriatrics; Tuen Mun Hospital; Hong Kong China
| | - K-W Chan
- Department of Medicine and Geriatrics; Princess Margaret Hospital; Hong Kong China
| | - VHF Hung
- Department of Medicine and Geriatrics; Princess Margaret Hospital; Hong Kong China
| | - V Tam
- F.H.K.A.M, Department of Medicine; Caritas Medical Centre; Hong Kong China
| | - S-C Siu
- Department of Medicine; Tung Wah Eastern Hospital; Hong Kong China
| | - H-K Pang
- Department of Medicine; Pamela Youde Nethersole Eastern Hospital; Hong Kong China
| | - WZ-M Wat
- Department of Medicine; Pamela Youde Nethersole Eastern Hospital; Hong Kong China
| | - HH-Y Lee
- Department of Medicine; Pamela Youde Nethersole Eastern Hospital; Hong Kong China
| | - C-T Chung
- Department of Medicine; Pamela Youde Nethersole Eastern Hospital; Hong Kong China
| | - RS-M Hue
- Department of Medicine; Pamela Youde Nethersole Eastern Hospital; Hong Kong China
| | - P-C Sham
- Centre for Genomic Sciences, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
- Department of Psychiatry, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
| | - BMY Cheung
- The State Key Laboratory of Pharmaceutical Biotechnology, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
- Department of Medicine, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
- Centre for Genomic Sciences, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
| | - ICK Wong
- Pharmacogenomics and Precision Therapeutics Laboratory, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
- The State Key Laboratory of Pharmaceutical Biotechnology, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
- Research Department of Practice and Policy; UCL School of Pharmacy; London United Kingdom
| | - KCB Tan
- Department of Medicine, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
| | - AWC Kung
- Department of Medicine, Li Ka Shing Faculty of Medicine; The University of Hong Kong; Pokfulam Hong Kong China
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Wang B, Ye TM, Lee KF, Chiu PCN, Pang RTK, Ng EHY, Yeung WSB. Annexin A2 Acts as an Adhesion Molecule on the Endometrial Epithelium during Implantation in Mice. PLoS One 2015; 10:e0139506. [PMID: 26444699 PMCID: PMC4596619 DOI: 10.1371/journal.pone.0139506] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 09/13/2015] [Indexed: 12/18/2022] Open
Abstract
To determine the function of Annexin A2 (Axna2) in mouse embryo implantation in vivo, experimental manipulation of Axna2 activities was performed in mouse endometrial tissue in vivo and in vitro. Histological examination of endometrial tissues was performed throughout the reproduction cycle and after steroid treatment. Embryo implantation was determined after blockage of the Axna2 activities by siRNA or anti-Axna2 antibody. The expression of Axna2 immunoreactivies in the endometrial luminal epithelium changed cyclically in the estrus cycle and was upregulated by estrogen. After nidatory estrogen surge, there was a concentration of Axna2 immunoreactivities at the interface between the implanting embryo and the luminal epithelium. The phenomenon was likely to be induced by the implanting embryos as no such concentration of signal was observed in the inter-implantation sites and in pseudopregnancy. Knockdown of Axna2 by siRNA reduced attachment of mouse blastocysts onto endometrial tissues in vitro. Consistently, the number of implantation sites was significantly reduced after infusion of anti-Axna2 antibody into the uterine cavity. Steroids and embryos modulate the expression of Axna2 in the endometrial epithelium. Axna2 may function as an adhesion molecule during embryo implantation in mice.
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Affiliation(s)
- Bing Wang
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
- Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People’s Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, People’s Republic of China
| | - Tian-Min Ye
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
- Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, People’s Republic of China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
- Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, People’s Republic of China
- Centre for Reproduction, Development and Growth, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
| | - Philip C. N. Chiu
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
- Centre for Reproduction, Development and Growth, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
| | - Ronald T. K. Pang
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
- Centre for Reproduction, Development and Growth, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
| | - Ernest H. Y. Ng
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
- Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, People’s Republic of China
- Centre for Reproduction, Development and Growth, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
| | - William S. B. Yeung
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
- Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, People’s Republic of China
- Centre for Reproduction, Development and Growth, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
- * E-mail:
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Kottawatta KSA, So KH, Kodithuwakku SP, Ng EHY, Yeung WSB, Lee KF. MicroRNA-212 Regulates the Expression of Olfactomedin 1 and C-Terminal Binding Protein 1 in Human Endometrial Epithelial Cells to Enhance Spheroid Attachment In Vitro. Biol Reprod 2015; 93:109. [PMID: 26377223 DOI: 10.1095/biolreprod.115.131334] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [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: 05/04/2015] [Accepted: 09/15/2015] [Indexed: 12/28/2022] Open
Abstract
Successful embryo implantation requires a synchronized dialogue between a competent blastocyst and the receptive endometrium, which occurs in a limited time period known as the "window of implantation." Recent studies suggested that down-regulation of olfactomedin 1 (OLFM1) in the endometrium and fallopian tube is associated with receptive endometrium and tubal ectopic pregnancy in humans. Interestingly, the human chorionic gonadotropin (hCG) induces miR-212 expression, which modulates OLFM1 and C-terminal binding protein 1 (CTBP1) expressions in mouse granulosa cells. Therefore, we hypothesized that embryo-derived hCG would increase miR-212 expression and down-regulate OLFM1 and CTBP1 expressions to favor embryo attachment onto the female reproductive tract. We found that hCG stimulated the expression of miR-212 and down-regulated OLFM1 but not CTBP1 mRNA in both human endometrial (Ishikawa) and fallopian (OE-E6/E7) epithelial cells. However, hCG suppressed the expression of OLFM1 and CTBP1 proteins in both cell lines. The 3'UTR of both OLFM1 and CTBP1 contained binding sites for miR-212. The miR-212 precursor suppressed luciferase expression, whereas the miR-212 inhibitor stimulated luciferase expression of the wild-type (WT)-OLFM1 and WT-CTBP1 reporter constructs. Furthermore, hCG (25 IU/ml) treatments stimulated trophoblastic (Jeg-3) spheroid (blastocyst surrogate) attachment onto Ishikawa and OE-E6/E7 cells. Transfection of miR-212 precursor increased Jeg-3 spheroid attachment onto Ishikawa cells and decreased OLFM1 and CTBP1 protein expressions, whereas the opposite occurred with miR-212 inhibitor. Taken together, hCG stimulated miR-212, which in turn down-regulated OLFM1 and CTBP1 expression in fallopian and endometrial epithelial cells to favor spheroid attachment.
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Affiliation(s)
- Kottawattage S A Kottawatta
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China Department of Veterinary Public Health and Pharmacology, Faculty of Veterinary Medicine and Animal Science, The University of Peradeniya, Peradeniya, Sri Lanka
| | - Kam-Hei So
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Suranga P Kodithuwakku
- Department of Animal Science, Faculty of Agriculture, The University of Peradeniya, Peradeniya, Sri Lanka
| | - Ernest H Y Ng
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China Centre for Reproduction, Development and Growth, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China ShenZhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen, China
| | - William S B Yeung
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China Centre for Reproduction, Development and Growth, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China ShenZhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China Centre for Reproduction, Development and Growth, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China ShenZhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Futian District, Shenzhen, China
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Lee YL, Fong SW, Chen AC, Li T, Yue C, Lee CL, Ng EH, Yeung WS, Lee KF. Establishment of a novel human embryonic stem cell-derived trophoblastic spheroid implantation model. Hum Reprod 2015; 30:2614-26. [DOI: 10.1093/humrep/dev223] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 08/14/2015] [Indexed: 12/27/2022] Open
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Lee CL, Guo Y, So KH, Vijayan M, Guo Y, Wong VHH, Yao Y, Lee KF, Chiu PCN, Yeung WSB. Soluble human leukocyte antigen G5 polarizes differentiation of macrophages toward a decidual macrophage-like phenotype. Hum Reprod 2015; 30:2263-74. [PMID: 26307092 DOI: 10.1093/humrep/dev196] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Accepted: 07/24/2015] [Indexed: 12/19/2022] Open
Abstract
STUDY QUESTION What are the actions of soluble human leukocyte antigen G5 (sHLAG5) on macrophage differentiation? SUMMARY ANSWER sHLAG5 polarizes the differentiation of macrophages toward a decidual macrophage-like phenotype, which could regulate fetomaternal tolerance and placental development. WHAT IS KNOWN ALREADY sHLAG5 is a full-length soluble isoform of human leukocyte antigen implicated in immune tolerance during pregnancy. Low or undetectable circulating level of sHLAG5 in first trimester of pregnancy is associated with pregnancy complications such as pre-eclampsia and spontaneous abortion. Decidual macrophages are located in close proximity to invasive trophoblasts, and are involved in regulating fetomaternal tolerance and placental development. STUDY DESIGN, SIZE, DURATION Human peripheral blood monocytes were differentiated into macrophages by treatment with granulocyte macrophage colony-stimulating factor in the presence or absence of recombinant sHLAG5 during the differentiation process. The phenotypes and the biological activities of the resulting macrophages were compared. PARTICIPANTS/MATERIALS, SETTING, METHODS Recombinant sHLAG5 was produced in Escherichia coli BL21 and the protein identity was verified by tandem mass spectrometry. The expression of macrophage markers were analyzed by flow cytometry and quantitative PCR. Phagocytosis was determined by flow cytometry. Indoleamine 2,3-dioxygenase 1 expression and activity were measured by western blot analysis and kynurenine assay, respectively. Cell proliferation and cell cycling were determined by fluorometric cell proliferation assay and flow cytometry, respectively. Cytokine secretion was determined by cytokine array and ELISA kits. Intracellular cytokine expression was measured by flow cytometry. Cell invasion and migration were determined by trans-well invasion and migration assay, respectively. MAIN RESULTS AND THE ROLE OF CHANCE sHLAG5 drove the differentiation of macrophages with 'immuno-modulatory' characteristics, including reduced expression of M1 macrophage marker CD86 and increased expression of M2 macrophage marker CD163. sHLAG5-polarized macrophages showed enhanced phagocytic activity. They also had higher expression and activity of indoleamine 2,3-dioxygenase 1, a phenotypic marker of decidual macrophages, which inhibited proliferation of autologous T-cells via induction of G0/G1 cell cycle arrest. In addition, sHLAG5-polarized macrophages had an increased secretion of interleukin-6 and C-X-C motif ligand 1, which inhibited interferon-γ production in T-cells and induction of trophoblast invasion, respectively. LIMITATIONS, REASONS FOR CAUTION Most information on the phenotypes and biological activities of human decidual macrophages are based on past literatures. A direct comparison between sHLAG5-polarized macrophages and primary decidual macrophages is required to verify the present observations. WIDER IMPLICATIONS OF THE FINDINGS This is the first study on the role of sHLAG5 in macrophage differentiation. Further study on the mechanism that regulates the differentiation process of macrophages would enhance our understanding on the physiology of early pregnancy. STUDY FUNDING/COMPETING INTERESTS This work was supported in part by the Hong Kong Research Grant Council Grant HKU774212 and the University of Hong Kong Grant 201309176126. The authors have no competing interests to declare. TRIAL REGISTRATION NUMBER Nil.
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Affiliation(s)
- Cheuk-Lun Lee
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, China Centre for Reproduction, Development and Growth, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam Road, Hong Kong, China Shenzhen Key Laboratory of Fertility Regulation, Department of Obstetrics and Gynecology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - YiFan Guo
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, China Department of Obstetrics and Gynaecology, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, China
| | - Kam-Hei So
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Madhavi Vijayan
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Yue Guo
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Vera H H Wong
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - YuanQing Yao
- Department of Obstetrics and Gynaecology, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, China Centre for Reproduction, Development and Growth, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam Road, Hong Kong, China Shenzhen Key Laboratory of Fertility Regulation, Department of Obstetrics and Gynecology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Philip C N Chiu
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, China Centre for Reproduction, Development and Growth, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam Road, Hong Kong, China Shenzhen Key Laboratory of Fertility Regulation, Department of Obstetrics and Gynecology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - William S B Yeung
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam Road, Hong Kong, China Centre for Reproduction, Development and Growth, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam Road, Hong Kong, China Shenzhen Key Laboratory of Fertility Regulation, Department of Obstetrics and Gynecology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
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So KH, Kodithuwakku SP, Kottawatta KS, Li RH, Chiu PC, Cheung AN, Ng EH, Yeung WS, Lee KF. Human chorionic gonadotropin stimulates spheroid attachment on fallopian tube epithelial cells through the mitogen-activated protein kinase pathway and down-regulation of olfactomedin-1. Fertil Steril 2015; 104:474-82. [DOI: 10.1016/j.fertnstert.2015.04.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 04/21/2015] [Accepted: 04/21/2015] [Indexed: 12/23/2022]
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Liu JY, Chen XX, Tang SCW, Lao LX, Sze SCW, Lee KF, Zhang KYB. Edible plants from traditional Chinese medicine is a promising alternative for the management of diabetic nephropathy. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.01.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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Chong CCN, Wong GLH, Wong VWS, Ip PCT, Cheung YS, Wong J, Lee KF, Lai PBS, Chan HLY. Antiviral therapy improves post-hepatectomy survival in patients with hepatitis B virus-related hepatocellular carcinoma: a prospective-retrospective study. Aliment Pharmacol Ther 2015; 41:199-208. [PMID: 25413146 DOI: 10.1111/apt.13034] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [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: 08/20/2014] [Revised: 09/15/2014] [Accepted: 11/04/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND The effect of antiviral therapy on the post-hepatectomy long-term survival in patients with hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC) remains uncertain. AIM To evaluate the effect of antiviral therapy on post-hepatectomy survival and recurrence in patients with HBV-related HCC. METHODS This was a prospective-retrospective study of a total of 404 patients who underwent hepatectomy for HBV-related HCC in a tertiary academic hospital. Data on patient and tumour characteristics, tumour recurrence, treatment for recurrence and survival were compared between antiviral and no antiviral groups. RESULTS Patient's and tumour characteristics were comparable between the two groups, except a higher proportion of patients with cirrhosis in the antiviral group. With a mean follow-up time of 52.4 months, antiviral group had a better 5-year overall survival (66.7% vs. 56.0%, P = 0.001) while there was no significant difference in the 5-year disease-free survival (44.7% vs. 38.1%, P = 0.166). Use of antiviral therapy was associated with better liver function reserve at the time of recurrence and a greater proportion of patients could receive curative treatment for recurrence (38.5% vs. 24.3%, P = 0.041). There was no significant different in the hazard ratios of patients who started antiviral therapy before or after operation (P = 0.054). CONCLUSIONS Use of antiviral therapy improves the long-term post-hepatectomy survival in patients with HBV-related HCC. With a better liver function reserve at the time of recurrence, a greater proportion of patients in antiviral group could receive curative treatment for recurrence.
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Affiliation(s)
- C C N Chong
- Division of Hepato-biliary and Pancreatic Surgery, Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
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Gao J, Zuo Y, So KH, Yeung WSB, Ng EHY, Lee KF. Electroacupuncture enhances spermatogenesis in rats after scrotal heat treatment. Spermatogenesis 2014; 2:53-62. [PMID: 22553490 PMCID: PMC3341246 DOI: 10.4161/spmg.19282] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Spermatogenesis is regulated by a cascade of steroid regulated genes in the testis. Recent studies suggested that acupuncture may improve fertility in men with abnormal semen parameters. Yet, the underlying mechanisms in which acupuncture enhances spermatogenesis remain largely unknown. Here we used a scrotal heat-treated rat model to study the effect of electroacupuncture (EA) on recovery of spermatogenesis. In this model, spermatogenesis was disrupted by 30 min scrotal heat treatment at 43°C. Ten sessions of EA were given at Baihui (GV20), Guanyuan (CV4), Zusanli (ST36) and Sanyinjiao (SP6) from day 9 to day 36 post-treatment. Sperm motility and production, morphology of the germinal epithelium by Johnsen’s scoring, germ cell apoptosis by TUNEL staining, proliferation by proliferating cell nuclear antigen (PCNA) staining, as well as serum testosterone and inhibin B levels by immunoassays were evaluated on day 0, 1, 9, 25, 37, 46, 56 and 79. When compared with the heat-treated (H) group, the heat-treated plus EA (H+EA) group showed a significant increase (p < 0.05) in PCNA-positive cells and inhibin B levels on days 37 and 46, and a higher Johnsen’s score till day 56. On day 79, motile spermatozoa could be found in the vas deferens of H+EA group only. Consistently, there was a trend of improved motility and increased number of motile epididymal spermatozoa in the H+EA group than the H group; while apoptosis of germ cells and serum testosterone levels were similar between the two groups. Taken together, EA enhanced germ cell proliferation through improvement of Sertoli cell functions. This may facilitate the recovery of spermatogenesis and may restore normal semen parameters in subfertile patients.
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Liu J, Petersen NJ, Lee KF, Hansen SH, Lao L, Sze C, Zhang Y. Application of temperature-correlated mobility theory for optimizing the MEKC separation of the main lignans from Schisandra Chinensis Fructus and its prescription Yuye Decoction. Electrophoresis 2014; 35:2907-14. [DOI: 10.1002/elps.201400007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 07/02/2014] [Accepted: 07/07/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Jingyi Liu
- School of Chinese Medicine; The University of Hong Kong; Hong Kong P. R. China
- Department of Pharmacy; University of Copenhagen; Copenhagen Denmark
| | | | - Kai-Fai Lee
- Department of Obstetrics and Gynecology; The University of Hong Kong; Hong Kong P. R. China
| | | | - Lixing Lao
- School of Chinese Medicine; The University of Hong Kong; Hong Kong P. R. China
| | - Chowing Sze
- School of Chinese Medicine; The University of Hong Kong; Hong Kong P. R. China
| | - Yanbo Zhang
- School of Chinese Medicine; The University of Hong Kong; Hong Kong P. R. China
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Abstract
Cushing's syndrome due to exogenous steroids is common, as about 1% of the general populations use exogenous steroids for various indications. Although endogenous Cushing's syndrome due to ectopic adrenocorticotropic hormone from a pancreatic neuroendocrine tumour is rare, a correct and early diagnosis is important. The diagnosis and management require high clinical acumen and collaboration between different specialists. We report a case of ectopic adrenocorticotropic hormone Cushing's syndrome due to pancreatic neuroendocrine tumour with liver metastasis. Early recognition by endocrinologists with timely surgical resection followed by referral to oncologists led to a favourable outcome for the patient up to 12 months after initial presentation.
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Affiliation(s)
- Kitty K T Cheung
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
| | - W Y So
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
| | - Alice P S Kong
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
| | - Ronald C W Ma
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
| | - K F Lee
- Department of Surgery, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
| | - Francis C C Chow
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
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Smeenk CTL, Arissian L, Sokolov AV, Spanner M, Lee KF, Staudte A, Villeneuve DM, Corkum PB. Alignment dependent enhancement of the photoelectron cutoff for multiphoton ionization of molecules. Phys Rev Lett 2014; 112:253001. [PMID: 25014807 DOI: 10.1103/physrevlett.112.253001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Indexed: 06/03/2023]
Abstract
The multiphoton ionization rate of molecules depends on the alignment of the molecular axis with respect to the ionizing laser polarization. By studying molecular frame photoelectron angular distributions from N(2), O(2), and benzene, we illustrate how the angle-dependent ionization rate affects the photoelectron cutoff energy. We find alignment can enhance the high energy cutoff of the photoelectron spectrum when probing along a nodal plane or when ionization is otherwise suppressed. This is supported by calculations using a tunneling model with a single ion state.
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Affiliation(s)
- C T L Smeenk
- JASLab, University of Ottawa and National Research Council, 100 Sussex Drive, Ottawa, Canada K1A 0R6
| | - L Arissian
- Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87131, USA
| | - A V Sokolov
- Department of Physics, Texas A & M University, College Station 77843, Texas, USA
| | - M Spanner
- JASLab, University of Ottawa and National Research Council, 100 Sussex Drive, Ottawa, Canada K1A 0R6
| | - K F Lee
- JASLab, University of Ottawa and National Research Council, 100 Sussex Drive, Ottawa, Canada K1A 0R6 and Department of Physics, Texas A & M University, College Station 77843, Texas, USA
| | - A Staudte
- JASLab, University of Ottawa and National Research Council, 100 Sussex Drive, Ottawa, Canada K1A 0R6
| | - D M Villeneuve
- JASLab, University of Ottawa and National Research Council, 100 Sussex Drive, Ottawa, Canada K1A 0R6
| | - P B Corkum
- JASLab, University of Ottawa and National Research Council, 100 Sussex Drive, Ottawa, Canada K1A 0R6
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Horne AW, Brown JK, Nio-Kobayashi J, Abidin HBZ, Adin ZEHA, Boswell L, Burgess S, Lee KF, Duncan WC. The association between smoking and ectopic pregnancy: why nicotine is BAD for your fallopian tube. PLoS One 2014; 9:e89400. [PMID: 24586750 PMCID: PMC3930728 DOI: 10.1371/journal.pone.0089400] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 01/22/2014] [Indexed: 11/19/2022] Open
Abstract
Epidemiological studies have shown that cigarette smoking is a major risk factor for tubal ectopic pregnancy but the reason for this remains unclear. Here, we set out to determine the effect of smoking on Fallopian tube gene expression. An oviductal epithelial cell line (OE-E6/E7) and explants of human Fallopian tubes from non-pregnant women (n = 6) were exposed to physiologically relevant concentrations of cotinine, the principle metabolite of nicotine, and changes in gene expression analyzed using the Illumina Human HT-12 array. Cotinine sensitive genes identified through this process were then localized and quantified in Fallopian tube biopsies from non-pregnant smokers (n = 10) and non-smokers (n = 11) using immunohistochemistry and TaqMan RT-PCR. The principle cotinine induced change in gene expression detected by the array analysis in both explants and the cell line was significant down regulation (P<0.05) of the pro-apoptotic gene BAD. We therefore assessed the effect of smoking on cell turnover in retrospectively collected human samples. Consistent with the array data, smoking was associated with decreased levels of BAD transcript (P<0.01) and increased levels of BCL2 transcript (P<0.05) in Fallopian tube biopsies. BAD and BCL2 specific immunolabelling was localized to Fallopian tube epithelium. Although no other significant differences in levels of apoptosis or cell cycle associated proteins were observed, smoking was associated with significant changes in the morphology of the Fallopian tube epithelium (P<0.05). These results suggest that smoking may alter tubal epithelial cell turnover and is associated with structural, as well as functional, changes that may contribute to the development of ectopic pregnancy.
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Affiliation(s)
- Andrew W. Horne
- MRC Centre for Reproductive Health, The Queen’s Medical Research Institute, The University of Edinburgh, Edinburgh, United Kingdom
- * E-mail:
| | - Jeremy K. Brown
- MRC Centre for Reproductive Health, The Queen’s Medical Research Institute, The University of Edinburgh, Edinburgh, United Kingdom
| | - Junko Nio-Kobayashi
- MRC Centre for Reproductive Health, The Queen’s Medical Research Institute, The University of Edinburgh, Edinburgh, United Kingdom
- Laboratory of Histology and Cytology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Hazirah B. Z. Abidin
- MRC Centre for Reproductive Health, The Queen’s Medical Research Institute, The University of Edinburgh, Edinburgh, United Kingdom
| | - Zety E. H. A. Adin
- MRC Centre for Reproductive Health, The Queen’s Medical Research Institute, The University of Edinburgh, Edinburgh, United Kingdom
| | - Lyndsey Boswell
- MRC Centre for Reproductive Health, The Queen’s Medical Research Institute, The University of Edinburgh, Edinburgh, United Kingdom
| | - Stewart Burgess
- Moredun Research Institute, Pentlands Science Park, Penicuik, United Kingdom
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - W. Colin Duncan
- MRC Centre for Reproductive Health, The Queen’s Medical Research Institute, The University of Edinburgh, Edinburgh, United Kingdom
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Cheong AWY, Pang RTK, Liu WM, Kottawatta KSA, Lee KF, Yeung WSB. MicroRNA Let-7a and dicer are important in the activation and implantation of delayed implanting mouse embryos. Hum Reprod 2014; 29:750-62. [PMID: 24419497 DOI: 10.1093/humrep/det462] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
STUDY QUESTION Does Let-7a have a functional role in modulating dicer expression to activate dormant mouse blastocysts for implantation? SUMMARY ANSWER Let-7a post-transcriptionally regulates dicer expression altering microRNA expression to affect the implantation competency of the activated blastocysts. WHAT IS KNOWN ALREADY The Let-7a microRNA is up-regulated during blastocyst dormancy and its forced-expression suppresses embryo implantation in vitro and in vivo. Dicer is a Let-7 target, which processes pre-microRNA to mature microRNA. STUDY DESIGN, SIZE, DURATION The effects on the expression of Let-7a and dicer in dormant blastocysts during the first 12 h after estradiol-induced activation, and the relationship between Let-7a and dicer in preimplantation embryos were determined. The effects on the microRNA expression and embryo implantation in vivo in dicer-knockdown mouse 5-8 cell embryos and dormant blastocysts at 1 h post estradiol activation were also studied. PARTICIPANTS/MATERIALS, SETTING, METHODS ICR female mice at 6 weeks of age were ovariectomized on Day 4 of pregnancy to generate the delayed implantation model. Mouse 5-8 cell embryos and/or dormant blastocysts at 1 h after estradiol injection were electroporated with dicer siRNA and Let-7a precursor or Let-7a inhibitor. At 48 h post electroporation, the Let-7a expression, dicer transcripts and proteins in the embryos were determined using qPCR and immunostaining/western blotting, respectively. All experiments were repeated at least three times. MAIN RESULTS AND THE ROLE OF CHANCE Estradiol injection down-regulated Let-7a and up-regulated dicer in the dormant blastocysts during the first 12 h post-activation. Dicer knockdown at 1 h post-activation of blastocysts suppressed EGFR expression, attenuated EGF binding and compromised implantation of the transferred embryos. Let-7a transcriptionally regulated dicer by binding to the 3'-UTR of dicer in trophoblast cells. Dicer knockdown in blastocysts suppressed mature Let-7a expression and compromised implantation. LIMITATIONS, REASONS FOR CAUTION Gain- and loss-of-function approaches were used by analyzing transient expressions of transfected microRNA modulators or genes. The consequence of the Let-7a-dicer interaction on pregnancy remains to be determined. The study used the mouse as a model and the applicability of the observed phenomena in humans warrants further investigation. WIDER IMPLICATIONS OF THE FINDINGS Our results indicate that the Let-7a-dicer interaction leads to differential microRNA expression in dormant blastocysts after estradiol activation. Because the expression pattern of Let-7a in human blastocysts is similar to that in mouse blastocysts, our observation that the Let-7a-dicer interaction has a role in regulating the implantation potential of the mouse blastocysts could be applicable to humans. STUDY FUNDING/COMPETING INTEREST(S) This project is supported partly by a research grant from the Research Grant Council to W.S.B.Y. The authors have no competing interests to declare.
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Affiliation(s)
- Ana W Y Cheong
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
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Lee KF, Chan AOK, Fok JMC, Mak MWH, Yu KC, Lee KM, Shek CC. Late presentation of simple virilising 21-hydroxylase deficiency in a Chinese woman with Turner's syndrome. Hong Kong Med J 2013; 19:268-71. [PMID: 23732434 DOI: 10.12809/hkmj133717] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Classical congenital adrenal hyperplasia due to 21-hydroxylase deficiency is a well-known disorder of sexual development (previously known as ambiguous genitalia) in genotypic female neonates. We report on a 66-year-old Chinese, brought up as male, with a simple virilising form of congenital adrenal hyperplasia associated with Turner's syndrome (karyotype 45,X/47,XXX/46,XX). His late presentation was recognised due to his exceptionally short stature and persistent sexual ambiguity. His condition was only brought to medical attention as he developed a huge abdominal mass, which later turned out to be a benign ovarian mucinous cyst. It is therefore important to look out for co-existing congenital adrenal hyperplasia in patients with Turner's syndrome and virilisation, after the presence of Y chromosome material has been excluded.
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Affiliation(s)
- K F Lee
- Department of Medicine and Geriatrics, Kwong Wah Hospital, Yaumatei, Kowloon, Hong Kong.
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Guo Y, Lee CL, So KH, Gao J, Yeung WSB, Yao Y, Lee KF. Soluble human leukocyte antigen-g5 activates extracellular signal-regulated protein kinase signaling and stimulates trophoblast invasion. PLoS One 2013; 8:e76023. [PMID: 24098421 PMCID: PMC3787956 DOI: 10.1371/journal.pone.0076023] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 08/17/2013] [Indexed: 11/18/2022] Open
Abstract
Soluble human leukocyte antigen-G (HLA-G) is a non-classical class Ib HLA molecule that is secreted from blastocysts. Soluble HLA-G modulates the immune tolerance of the mother and can be used as a prognostic factor for the clinical pregnancy rate. However, the underlying mechanism of how soluble HLA-G5 affects pregnancy remains largely unknown. We hypothesized that soluble HLA-G5 promotes successful implantation and pregnancy by modulating trophoblast invasion through receptor binding and activation of extracellular signal-regulated protein kinase (ERK) signaling pathway. Recombinant HLA-G5 protein over-expressed in E. coli BL21 was purified to near homogeneity. We studied the expression of HLA-G5 and its receptors, the leukocyte immunoglobulin-like receptor subfamily B1 (LILRB1) and killer cell immunoglobulin-like receptor 2DL4 (KIR2DL4), in primary trophoblasts and trophoblastic (JAr and JEG-3) cell lines by florescence-labeled HLA-G5. HLA-G5 was detected in the primary trophoblasts and JEG-3 cells. The LILRB1 and KIR2DL4 receptors were expressed in both primary trophoblasts and trophoblastic cell lines. HLA-G5 stimulated cell invasion (p<0.05) and increased urokinase (uPA) and matrix metalloproteinases (MMPs) transcripts and their activity (p<0.05) in trophoblastic cells. HLA-G5 activated the ERK signaling pathway and induced ERK1/2 phosphorylation in the trophoblastic cell lines. Addition of ERK inhibitors (U0126 and PD98059) nullified the stimulatory effect of HLA-G5 on trophoblastic cell invasion. Taken together, HLA-G5 induced trophoblast invasion by binding to KIR2DL4 and LILRB1, by increasing uPA and MMPs expressions and by activating the ERK signaling pathway.
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Affiliation(s)
- YiFan Guo
- Department of Obstetrics and Gynaecology, Chinese PLA General Hospital, Beijing, China
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong SAR, China
| | - Cheuk-Lun Lee
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong SAR, China
- Centre for Reproduction, Development and Growth, The University of Hong Kong, Hong Kong SAR, China
| | - Kam-Hei So
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong SAR, China
| | - Jing Gao
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong SAR, China
| | - William S. B. Yeung
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong SAR, China
- Centre for Reproduction, Development and Growth, The University of Hong Kong, Hong Kong SAR, China
| | - YuanQing Yao
- Department of Obstetrics and Gynaecology, Chinese PLA General Hospital, Beijing, China
- * E-mail: ckflee@ hku.hk (K-FL); (YQY)
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong SAR, China
- Centre for Reproduction, Development and Growth, The University of Hong Kong, Hong Kong SAR, China
- * E-mail: ckflee@ hku.hk (K-FL); (YQY)
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