1
|
Huang LH, Xie JG, Zhang Y, Li ZZ, Li X, Tong XM, Zhang H. [New perspective of the 2023 American Academy of Audiology position statement on early identification of cytomegalovirus in newborns]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2024; 59:192-196. [PMID: 38369801 DOI: 10.3760/cma.j.cn115330-20230801-00026] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Affiliation(s)
- L H Huang
- Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otorhinolaryngology, Beijing 100005, China
| | - J G Xie
- Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otorhinolaryngology, Beijing 100005, China
| | - Y Zhang
- Department of Pediatrics, Beijing Tongren Hospital, Capital Medical University, Beijing 100176, China
| | - Z Z Li
- Department of Pediatrics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - X Li
- Peking University Sixth Hospital, Peking University Institute of Mental Health, National Health Commission Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing 100191, China
| | - X M Tong
- Department of Pediatrics, Peking University Third Hospital, Beijing 100191, China
| | - H Zhang
- Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otorhinolaryngology, Beijing 100005, China
| |
Collapse
|
2
|
Huang LH, Han DM. [Forty-year history of newborn hearing screening program in China]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2023; 58:729-737. [PMID: 37455123 DOI: 10.3760/cma.j.cn115330-2023-0313-00110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Affiliation(s)
- L H Huang
- Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otorhinolaryngology, Key Laboratory of Otorhinolaryngology Head and Neck Surgery, Ministry of Education, Beijing 100005, China
| | - D M Han
- Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otorhinolaryngology, Key Laboratory of Otorhinolaryngology Head and Neck Surgery, Ministry of Education, Beijing 100005, China
| |
Collapse
|
3
|
Huang LH, Zhao XL, Cheng XH, Yu YD, Wen C, Li Y, Wang XL, Wang XY, Ruan Y, En H. [Analysis of genotypes on 850 newborns with SLC26A4 single-allele mutation and the phenotypes of those with second variant]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2023; 58:117-125. [PMID: 36748152 DOI: 10.3760/cma.j.cn115330-20220330-00146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Objective: To clarify the phenotypes of the newborns with SLC26A4 single-allele mutation in deafness genetic screening and second variant; to analyze the SLC26A4 genotype and hearing phenotype. Methods: 850 newborns born in Beijing from April 2015 to December 2019 were included and there were 468 males and 382 females. They received genetic deafness screening for 9 or 15 variants, with the result of SLC26A4 single-allele mutation. Firstly, three step deafness gene sequencing was adopted in this work, i.e., the first step was "SLC26A4 gene whole exons and splice sites" sequencing; the second step was "SLC26A4 gene promoter, FOXI1 gene and KCNJ10 gene whole exons" sequencing; and the third step was detection for "SLC26A4 gene copy number variation". Secondly, we collected the results of newborn hearing screening for all patients with the second mutation found in the three step test, and conducted audiological examinations, such as acoustic immittance, auditory brainstem response and auditory steady state response. Thirdly, for novel/VUS mutations, we searched the international deafness gene database or software, such as DVD, ClinVar and Mutation Taster, to predict the pathogenicity of mutations according to the ACMG guideline. Lastly, we analyzed the relationship between genotype and phenotype of newborns with SLC26A4 single allele mutation. Results: Among 850 cases, the median age of diagnosis was 4 months. In the first step, 850 cases were sequenced. A total of 32 cases (3.76%, 32/850) of a second variants were detected, including 18 cases (2.12%, 18/850) with identified pathogenic variants; 832 cases were sequenced and 8 cases of KCNJ10 gene missense variants were detected among the second step. No missense mutations in the FOXI1 gene and abnormal SLC26A4 gene promoter were detected; the third step sequencing results were all negative. Genotypes and hearing phenotypes included 18 cases combined with the second clear pathogenic variant, 16 cases (16/18) referred newborn hearing screening and 2 cases (2/18) passed in both ears; degree of hearing loss consisted of 18 profound ears (18/36), 13 severe ears (13/36) and 5 moderate ears (5/36); audiogram patterns comprised 17 high frequency drop ears (17/36), 14 flat ears (14/36), 3 undistinguished ears (3/36), and 2 U shaped ears (2/36); 11 cases underwent imaging examination, all of which were bilateral enlarged vestibular aqueduct. As for 22 cases of other genotypes, all passed neonatal hearing screening and the hearing diagnosis was normal, including 9 cases with VUS or possibly novel benign variants, 8 cases with KCNJ10 double gene heterozygous variants, and 5 cases with double heterozygous variants. Conclusions: The probability of individuals with SLC26A4 single-allele variant who merge with a second pathogenic variant is 2.12%, all of which are SNV, which can provide scientific basis for the genetic diagnosis and genetic counseling of SLC26A4 variants. Those who have merged with second pathogenic variant are all diagnosed with sensorineural hearing loss. Patients with KCNJ10 gene mutations do not manifest hearing loss during the infancy, suggesting the need for further follow-up.
Collapse
Affiliation(s)
- L H Huang
- Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education (Capital Medical University), Beijing 100730, China
| | - X L Zhao
- Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education (Capital Medical University), Beijing 100730, China Department of Otolaryngology Head and Neck Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - X H Cheng
- Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education (Capital Medical University), Beijing 100730, China
| | - Y D Yu
- Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education (Capital Medical University), Beijing 100730, China
| | - C Wen
- Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education (Capital Medical University), Beijing 100730, China
| | - Y Li
- Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education (Capital Medical University), Beijing 100730, China
| | - X L Wang
- Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education (Capital Medical University), Beijing 100730, China
| | - X Y Wang
- Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education (Capital Medical University), Beijing 100730, China
| | - Y Ruan
- Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education (Capital Medical University), Beijing 100730, China
| | - H En
- Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education (Capital Medical University), Beijing 100730, China
| |
Collapse
|
4
|
Li Y, Huang LH, Zhao XL, Wen C, Yu YD, Fu XX. [Advances in research on candidate pathogenic genes for presbycusis]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:1529-1534. [PMID: 36707965 DOI: 10.3760/cma.j.cn115330-20221014-00613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Y Li
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing 100005, China
| | - L H Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing 100005, China
| | - X L Zhao
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - C Wen
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing 100005, China
| | - Y D Yu
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing 100005, China
| | - X X Fu
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing 100005, China
| |
Collapse
|
5
|
Huang LH. [Research progress in accurate diagnosis of large vestibular aqueduct syndrome]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:1135-1139. [PMID: 36177573 DOI: 10.3760/cma.j.cn115330-20220330-00147] [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] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Affiliation(s)
- L H Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otorhinolaryngology, Key Laboratory of Otorhinolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing 100005, China
| |
Collapse
|
6
|
Yang CH, Lin YS, Ou YC, Weng WC, Huang LH, Lu CH, Hsu CY, Tung MC. Short-term stretched penile length analysis for subsequent erectile dysfunction after robotic-assisted radical prostatectomy with bilateral neurovascular bundle preservation. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
7
|
Yang LL, Jiang B, Chen SH, Liu HY, Chen TT, Huang LH, Yang M, Ding J, He JJ, Li JJ, Yu B. Abnormal keratin expression pattern in prurigo nodularis epidermis. Skin Health Dis 2022; 2:e75. [PMID: 35665210 PMCID: PMC9060049 DOI: 10.1002/ski2.75] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 09/13/2021] [Accepted: 09/14/2021] [Indexed: 12/11/2022]
Abstract
Background Prurigo nodularis (PN) is a highly pruritic, chronic dermatosis and difficult to treat. PN lesions are characterized by existence of many hyperkeratotic, erosive papules and nodules. However, the pathogenesis of PN still remains unelucidated. Aim To clarify the keratin role in the epidermis hyperproliferation, the keratin expression pattern in the PN lesional skin. Methods In this study, we enrolled 24 patients with PN and 9 healthy control volunteers. K1/K10, K5/K14, K6/K16/K17 expression pattern were investigated by using immunohistochemical staining. Results The lesional skin consists of the thickened spinous layers, in which active cell division was found. K5/K14 were upregulated in PN lesional epidermis, the staining signal localized in the basal layer and lower suprabasal layers. Hyperproliferation‐associated K6 was found in all layers of epidermal lesional skin, especially in the spinous layers. In contrast, K16 was only detected in the basal and lower suprabasal layers, K17 was observed in the basal and spinous layers. Terminal differential keratins K1/K10 were upregulated, detected in the pan‐epidermis, but spared in the basal and low suprabasal layers. Conclusion The keratinocytes enter an alternative differentiation pathway, which are responsible for the activated keratinocyte phenotype, abnormal keratins expression potentially contributes to the keratinocytes proliferation, subsequently lead to increased lesional skin epidermis thickness, hyperkeratiosis and alteration of skin barrier properties.
Collapse
Affiliation(s)
- L L Yang
- Department of Dermatology Peking University Shenzhen Hospital Shenzhen Guangdong China.,Huzhou Center Hospital Huzhou China
| | - B Jiang
- Department of Dermatology Peking University Shenzhen Hospital Shenzhen Guangdong China
| | - S H Chen
- Department of Dermatology Peking University Shenzhen Hospital Shenzhen Guangdong China
| | - H Y Liu
- Department of Dermatology Peking University Shenzhen Hospital Shenzhen Guangdong China
| | - T T Chen
- Department of Dermatology Affiliated Shenzhen Longhua People's Hospital of Southern Medical University Shenzhen Guangdong China
| | - L H Huang
- Guanghe Hui Shenzhen Guangdong China
| | - M Yang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Shenzhen Guangdong China
| | - J Ding
- Department of Dermatology Shenzhen Baoan Maternal and Child Health Hospital Shenzhen Guangdong China
| | - J J He
- Department of Plastic and Cosmetic Surgery Peking University Shenzhen Hospital Shenzhen Guangzhou China
| | - J J Li
- Department of Dermatology Peking University Shenzhen Hospital Shenzhen Guangdong China
| | - B Yu
- Department of Dermatology Peking University Shenzhen Hospital Shenzhen Guangdong China
| |
Collapse
|
8
|
Zhang Y, Zheng QS, Huang LH, Zheng SX, Wei WQ. [Risk assessment for thyroid (131)I exposure among nuclear medical staff]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2021; 39:851-854. [PMID: 34886647 DOI: 10.3760/cma.j.cn121094-20200930-00549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To explore the main risk factors and to assess the risk of thyroid (131)I exposure among nuclear medical workers. Methods: From March to October in 2019, cluster sampling was adopted to collect the number of (131)I automatic packer and patients treated for thyroid cancer, hyperthyroidism and liven cancer used (131)I, the practicing categories, job rotation and (131)I operation condition of nuclear medical staff were also investegated in the 21 nuclear medicine hospitals in Fujian Province that carried out (131)I nuclide diagnosis and treatment in 2018. (131)I aerosol and personnel thyroid (131)I were measured in 20 hospitals using (131)I for thyroid cancer or hyperthyroidism. The main risk factors leading to thyroid (131)I exposure of nuclear medical staff were found and aninternal exposure risk assessment model was established. Results: The detection rate of (131)I aerosol and personnel thyroid (131)I were 80.0% (16/20) and 25.5% (62/243) in 20 hospitals. The situation of packaging and administration about (131)I in the nearly 10 effective half-life, the concentration of (131)I aerosol in the nuclear medicine workplace, the number of patients treated with (131)I for thyroid cancer or hyperthyroidism were the main risk factors leading to thyroid (131)I internal exposure (OR=5.857, 6.808, 1.983, 1.150, P<0.05) . Conclusion: (131)I exposure is common among nuclear medical workers, attention should be paid to the protection of internal radiation, strengthen the control of main risk factors, so as to reduce the risk of internal radiation.
Collapse
Affiliation(s)
- Y Zhang
- Fujian Center for Prevention and Control of Occupational Diseases and Chemical Posioning, Fuzhou 350025, China
| | - Q S Zheng
- Fujian Center for Prevention and Control of Occupational Diseases and Chemical Posioning, Fuzhou 350025, China
| | - L H Huang
- Fujian Center for Prevention and Control of Occupational Diseases and Chemical Posioning, Fuzhou 350025, China
| | - S X Zheng
- Fujian Center for Prevention and Control of Occupational Diseases and Chemical Posioning, Fuzhou 350025, China
| | - W Q Wei
- Fujian Center for Prevention and Control of Occupational Diseases and Chemical Posioning, Fuzhou 350025, China
| |
Collapse
|
9
|
Huang LH, Chen CM, Chen SF, Wang HH. Roles of nurses and National Nurses Associations in combating COVID-19: Taiwan experience. Int Nurs Rev 2020; 67:318-322. [PMID: 32761608 PMCID: PMC7436573 DOI: 10.1111/inr.12609] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/12/2020] [Accepted: 06/16/2020] [Indexed: 12/01/2022]
Abstract
As the COVID‐19 pandemic continues to expand worldwide, Taiwan has effectively contained the spread domestically and protected its citizens after registering its first case relatively early on 21 January 2020. Proactive preparedness and deployment by the national government, timely evidence and experience‐based judgements and decision‐making, information transparency, rapid response, and effective communication and measures have all been critical to combating COVID‐19 in Taiwan. Nurses play a pivotal role in providing direct health care as well as providing contact tracing and care for the quarantined clients and community care services. The Taiwan Nurses Association and other nurses’ associations serve a vital leadership role in advocating for nurses, raising public awareness, enhancing nursing’s professional profile, and sharing experiences via national and international platforms. The implications for nursing and health policy are that we need to well prepare for any unpredicted emerging pandemic in the future. Providing adequate personal protective equipment and safe staffing should be the highest priority for the governments and policymakers around the world to combat pandemic successfully.
Collapse
Affiliation(s)
- L H Huang
- Taiwan Nurses Association, International Council of Nurses, School of Nursing, China Medical University, Taichung, Taiwan
| | - C M Chen
- Taiwan Nurses Association, Department of Nursing, College of Medicine, National Cheng-Kung University, Tainan, Taiwan
| | - S F Chen
- Taiwan Nurses Association, Taipei, Taiwan
| | - H H Wang
- Taiwan Nurses Association, College of Nursing, Kaohsiung Medical University, Kaohsiung, Taiwan
| |
Collapse
|
10
|
Huang AC, Cheng YD, Huang LH, Hsiao YT, Peng SF, Lu KW, Lien JC, Yang JL, Lin TS, Chung JG. Casticin Induces DNA Damage and Impairs DNA Repair in Human Bladder Cancer TSGH-8301 Cells. Anticancer Res 2019; 39:1839-1847. [PMID: 30952724 DOI: 10.21873/anticanres.13291] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/14/2019] [Accepted: 03/15/2019] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Casticin shows anti-cancer effects in many types of cancer. However, there is no information regarding its role in DNA damage in human bladder cancer. The aim of this study was to investigate the effects of casticin on TSGH-8301 cells in vitro. MATERIALS AND METHODS Viability of cells was assayed by flow cytometry. DNA damage was assayed by DAPI staining, comet assay, and gel electrophoresis. Protein levels were examined by western blotting and confocal laser microscopy. RESULTS Casticin decreased viability of cells and induced DNA damage. Furthermore, casticin decreased expression of p-ATM, p-ATR, MDC1 and MGMT levels after 48 h of treatment, however, it increased p-ATR and MGMT levels after 12 h. In contrast, casticin increased the levels of p-p53, p-H2A.X, and PARP after 48 h of treatment. As shown by confocal microscopy, casticin affected the translocation of DNA-PKcs and p-p53 to the nucleus of TSGH-8301 cells. CONCLUSION Casticin decreased viability of human bladder cancer cells through DNA damage.
Collapse
Affiliation(s)
- An-Cheng Huang
- Department of Nursing, St. Mary's Junior College of Medicine, Nursing and Management, Sanxing, Taiwan, R.O.C
| | - Yih-Dih Cheng
- Department of Pharmacy, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Li-Hsueh Huang
- Department of Pharmacy, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Yung-Ting Hsiao
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan, R.O.C
| | - Shu-Fen Peng
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan, R.O.C
| | - Kung-Wen Lu
- College of Chinese Medicine, School of Post-Baccalaureate Chinese Medicine, China Medical University, Taichung, Taiwan, R.O.C
| | - Jin-Cherng Lien
- School of Pharmacy, China Medical University, Taichung, Taiwan, R.O.C
| | - Jong-Long Yang
- Department of Nursing, St. Mary's Junior College of Medicine, Nursing and Management, Sanxing, Taiwan, R.O.C
| | - Tzu-Shun Lin
- Department of Pharmacy, Saint Mary's Hospital Luodong, Luodong, Taiwan, R.O.C.
| | - Jing-Gung Chung
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan, R.O.C. .,Department of Biotechnology, Asia University, Taichung, Taiwan, R.O.C
| |
Collapse
|
11
|
Wen C, Huang LH, Wang XY, Wang XL, Zhao XL, Chen XH. [Follow-up research on hearing progression of GJB2 mutation associated hearing loss in children]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:1798-1803. [PMID: 30550213 DOI: 10.13201/j.issn.1001-1781.2018.23.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Indexed: 11/12/2022]
Abstract
Objective: To analyze the auditory follow-up alteration of GJB2 associated hearing loss children. Method: Forty three children aged 0-5 years with homozygous or heterozygous mutations of gene attach to the Children' s Hearing Diagnostic Center of our hospital were enrolled in this study. Distortion product otoacoustic emissions and acoustic immittance, auditory brainstem response, auditory steady state response, acoustic impedance, pediatric behavior audiometry and other audiological tests were performed. The subjects had at least two audiology diagnosis results at different time; follow-up time was at least three months. According to the genotype, the subjects were divided into two groups: 23 cases(53.49%) in the truncating mutation/truncating mutation (T/T) group and 20 cases(46.51%) in the nontruncating mutation/truncating mutation (NT/T) group. Hearing levels of the first and last diagnoses and progression rate were compared between the two groups, and the progression value and progression rate were analyzed. Result: The average follow-up time was(19.63 ± 16.76) months. The frequency of c. 235delC (56.98%) in GJB2 gene mutations sites was highest in this group, followed by c. 109G> A (22.09%). The first diagnosis of hearing loss, T/T group was mainly severe(60.87%), NT/T group was mainly mild (50.00%); The degree of final hearing loss in the T/T group was mainly severe(50.00%) while the NT/T group was mainly mild(42.50%), and the T/T group was both heavier than the NT/T group. The difference was both statistically significant. Follow-up research on 43 cases(86 ears) showed that 3 cases(4 ears) developed hearing progression, 1 of them were bilateral progression, two was unilateral progression; the overall rate of progression was 4.65%(4/86), and the rate of progression in the T/T group was 2.17%(1/46) while the NT/T group was 7.50%(3/40). There was no significant difference between the two groups. The average progression of 4 ears was 11.25 dB HL, the average progression speed was 0.5 dB HL/month. Conclusion: This study showed that the degree of hearing loss of associated hearing loss children was mild to profound, and those with truncating mutations/truncating mutations were severer than those with nontruncating mutations/truncating mutations. Hearing progression was seen in both groups, it is suggested that children with GJB2 gene mutations hearing progression may occur during growth and development, therefore, they should be followed up regularly. .
Collapse
Affiliation(s)
- C Wen
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, 100730, China
| | - L H Huang
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, 100730, China
| | - X Y Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University
| | - X L Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, 100730, China
| | - X L Zhao
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, 100730, China
| | - X H Chen
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, 100730, China
| |
Collapse
|
12
|
Zhao XL, Huang LH, Wang XY, DU Y, Wang X, Cheng XH, Zhao LP, Li Y. [Analysis of genotypes and audiological characteristics of children with SLC26A4 gene pathogenic mutations]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:836-840. [PMID: 29921053 DOI: 10.13201/j.issn.1001-1781.2018.11.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Indexed: 11/12/2022]
Abstract
Objective:To explore the correlation of SLC26A4 genotype and audiology.Method:The subjects were 70 children aged 0 to 7 years old, who were admitted to otological outpatient department.All subjects received nine crystal hereditary deafness gene chip and confirmed by (or)SLC26A4 gene full coding region detection.The patients were diagnosed as homozygous or compound heterozygous mutations.At the same time,acoustic immittance,auditory brainstem response, auditory steady state response and pediatric behavior audiometry, newborn hearing screening and other audiological tests were displayed. According to the genotype, the subjects were divided into two groups: group A (SLC26A4 gene homozygous mutation) in 40 cases, group B (SLC26A4 gene compound heterozygous mutation) in 30 cases. The frequency of SLC26A4 gene mutation, the two groups of genotypes and hearing screening results,the degree of hearing loss and audiometric configurations were analyzed statistically. Result: In 70 patients, the top 4 of the 70 patients with high frequency of mutations were IVS7-2A> G(76.43%), 2168A> G(15.00%), 1226G> A(2.86%) and 2000T> C(2.16%), respectively. 34.29% of newborns passed hearing screening with single or double ears, among which group A and group B were 32.50% and 36.67%,respectively. There was no statistically significant difference between two groups in hearing screening. The degree of hearing loss in group A(56.25%) and group B(48.33%) were mainly profound and there was no significant difference between them. The audiometric configurations: group A(60.00%) was mainly high frequency loss type, while group B(55.00%) was mainly flat type. The difference between them was statistically significant.Conclusion:The mutation sites of SLC26A4 gene were mainly IVS7-2A> G, and the degree of hearing loss was mostly profound. To the audiometric configurations,SLC26A4 gene homozygous mutant were mainly high frequency loss type, while SLC26A4 gene compound heterozygous mutant were mainly flat type. 34.29% children passed universal newborn hearing screening with one ear at least, which indicates SLC26A4 gene mutations can result in late-onset hearing loss, so those patients should be attached great importance..
Collapse
Affiliation(s)
- X L Zhao
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing, 100005, China
| | - L H Huang
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing, 100005, China
| | - X Y Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing, 100005, China
| | - Yt DU
- Department of Anesthesiology, Peking University First Hospital
| | - Xl Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing, 100005, China
| | - X H Cheng
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing, 100005, China
| | - L P Zhao
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing, 100005, China
| | - Y Li
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing, 100005, China
| |
Collapse
|
13
|
Zhao XL, Huang LH, Wang XL. [Analysis of clinical audiology and etiology in 72 twins aged 0-4 years]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:979-983. [PMID: 29986558 DOI: 10.13201/j.issn.1001-1781.2018.13.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the clinical audiological characteristics of twins and analyze the risk factors for hearing loss. Method:The subjects were 72 cases,selected from our hospital otological outpatient of 0 to 4 years old twins. All subjects underwent universal newborn hearing screening and had definite results. At the same time, acoustic immittance,auditory brainstem response, auditory steady-state response, pediatric behavior audiometry and other audiological tests were carried out. Subjects were divided into two groups according to whether with high risk factors for hearing loss: 42 patients(58.33%) in group A(risk factor group) and 30 patients(41.67%) in group B (no risk factor group).The results of universal newborn hearing screening(UNHS),hearing diagnosis, degree of hearing loss, type of hearing curve and risk factors categories of hearing loss were analyzed for both groups of subjects.Result:In 72 cases,41 were males and 31 were females. Thirty-one were the first born and 41 were the second born. Age distribution of first visit:3 to 40 months, median age: 4-6 months.Forty-seven(65.27%) failed in the UNHS. The failing rate was higher in group A(76.19%) than in group B(50.00%).Fifty(69.44%) were diagnosed with hearing loss.78.57% of hearing loss was diagnosed in group A, which was higher than that in group B(56.67%).The degree of hearing loss in group A was mainly profound(43.55%) and group B was moderate(48.00%).The differences above all was statistically significant.For the hearing curve type, group A(35.48%) and group B(40.00%) were both mainly flat-type, the difference was not statistically significant. In 72 cases, there were 42 cases(58.33%) with risk factors for hearing loss, of which 38.1% had two or more kinds of risk factors and 61.9% had one kind of risk factor.Hyperbilirubinemia was the major risk factor(34.92%).Conclusion:69.44% of twins had a confirmed hearing loss. Those with risk factors had higher failing rate of UNHS and more serious hearing loss.58.33% of twins had risk factors for hearing loss, and individuals with two or more kinds of risk factors were much more. Hyperbilirubinemia takes the first place and should be paid enough attention by clinicians.
Collapse
Affiliation(s)
- X L Zhao
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing,100005, China
| | | | | |
Collapse
|
14
|
Huang LH, Wang XY. [Childhood delayed-onset hearing loss deserves close attention]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 53:172-176. [PMID: 29614548 DOI: 10.3760/cma.j.issn.1673-0860.2018.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- L H Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otorhinolaryngology, Key Laboratory of Otorhinolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing 100005, China
| | - X Y Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otorhinolaryngology, Key Laboratory of Otorhinolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing 100005, China
| |
Collapse
|
15
|
Wang XY, Huang LH, Du YT. [Research progress on the etiology of delayed-onset hearing loss in children]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 52:787-791. [PMID: 29050102 DOI: 10.3760/cma.j.issn.1673-0860.2017.10.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Newborn hearing screening is an effective method for early detection of hearing loss, however, it is not able to detect delayed-onset hearing loss. By exploring the etiology of delayed-onset hearing loss in children, it can provide a clinical basis for early detection of delayed-onset hearing loss. Mutations in SLC26A4, mitochondrial, GJB2 and other genes, enlarged vestibular aqueduct, congenital cytomegalovirus infection, extracorporeal membrane oxygenation, and auditory neuropathy et al were more commonly reported risk factors. In this paper, the risk factors related to delayed-onset hearing loss, which are divided into 5 categories: genetic mutation, abnormal inner ear malformation, perinatal factors, auditory neuropathy and no identifiable cause, are reviewed and analyzed.
Collapse
Affiliation(s)
- X Y Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otorhinolaryngology, Key Laboratory of Otorhinolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing 100005, China
| | - L H Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otorhinolaryngology, Key Laboratory of Otorhinolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing 100005, China
| | - Y T Du
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otorhinolaryngology, Key Laboratory of Otorhinolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing 100005, China
| |
Collapse
|
16
|
Liu XF, Huang LH, Zhang C, Huang GH, Yan LM, He J. A comparison of the cost-utility of ultrasound-guided high-intensity focused ultrasound and hysterectomy for adenomyosis: a retrospective study. BJOG 2017; 124 Suppl 3:40-45. [PMID: 28856866 DOI: 10.1111/1471-0528.14746] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2017] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To evaluate cost-effectiveness of ultrasound-guided high-intensity focused ultrasound (USgHIFU) and open hysterectomy for adenomyosis. DESIGN A retrospective analysis. SETTING Gynaecological department in a single centre in China. POPULATION Patients with symptomatic adenomyosis. MAIN OUTCOME MEASURES Cost difference between patients with adenomyosis treated with USgHIFU and open hysterectomy. METHODS Three hundred and sixty-eight patients with adenomyosis were retrospectively reviewed. Among them, 302 patients were treated with USgHIFU and 66 patients with open hysterectomy. All of them had 1-, 3-, 6- and 12-month follow ups. The patients' quality of life (QOL) was evaluated and the utility scores were obtained from a rating scale to conduct a cost-utility analysis (CUA). RESULTS No significant differences were found at any follow-up time point in the QOL between the two groups (P > 0.05). After treatment, the QOL scores significantly increased in both groups (P < 0.05): the quality adjusted life year (QALY) for patients treated with USgHIFU was USUS$5256.48, whereas it was USUS$7510.03 for patients treated with open hysterectomy. Both incremental cost and sensitivity analysis showed that USgHIFU was less costly than open hysterectomy. CONCLUSIONS The QOL of patients with adenomyosis can be significantly improved by either USgHIFU or open hysterectomy, but USgHIFU is less costly. TWEETABLE ABSTRACT USgHIFU can safely be used to treat patients with adenomyosis and significantly improved the quality of life of patients after treatment. The cost of USgHIFU is less than that of surgical treatment.
Collapse
Affiliation(s)
- X F Liu
- Department of Obstetrics and Gynaecology, Suining Central Hospital, Sichuan, China
| | - L H Huang
- Department of Obstetrics and Gynaecology, Suining Central Hospital, Sichuan, China
| | - C Zhang
- Department of Obstetrics and Gynaecology, Suining Central Hospital, Sichuan, China
| | - G H Huang
- Department of Obstetrics and Gynaecology, Suining Central Hospital, Sichuan, China
| | - L M Yan
- Department of Obstetrics and Gynaecology, Suining Central Hospital, Sichuan, China
| | - J He
- Department of Obstetrics and Gynaecology, Suining Central Hospital, Sichuan, China
| |
Collapse
|
17
|
Chen P, Huang Q, Xu XJ, Shao ZL, Huang LH, Yang XZ, Guo W, Li CM, Chen C. [The effect of liraglutide in combination with human umbilical cord mesenchymal stem cells treatment on glucose metabolism and β cell function in type 2 diabetes mellitus]. Zhonghua Nei Ke Za Zhi 2017; 55:349-54. [PMID: 27143183 DOI: 10.3760/cma.j.issn.0578-1426.2016.05.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
OBJECTIVE To observe the effect of liraglutide (LIRA) in combination of umbilical cord mesenchymal stem cells (hUC-MSCs) in treating type 2 diabetes mellitus. METHODS Eligibility criteria for subjects includes: type 2 diabetes mellitus with more than 10 years duration; having been treated with secretagogues, metformin and insulin in combination with LIRA for at least 6 months; poor glycemic control [glycosylated hemoglobin A1c(HbA1c) 7%-10%]. Totally, twelve patients were enrolled and randomly divided into two groups: the group A (LIRA group, n=6) and the group B (LIRA+ hUC-MSCs group, n=6). The hUC-MSCs were transplanted through infusing of 1×10(6) cells /kg via pancreatic artery directed by interventional radiology on the first day, and followed by infusing 1×10(6) cells /kg through peripheral vein on the eighth, the fifteenth and the twenty-second day sequentially. The control subjects were infused with saline. Both groups were treated with LIRA for 24 weeks at the same period. Fasting plasma glucose(FPG), 2h postprandial plasma glucose(2hPG) and HbA1c were measured. A 75 g oral glucose tolerance test(OGTT)was performed. The early phase of C peptide(CP) secretion function(ΔCP30/ΔG30), the total amount of C peptide secretion function(AUCCP180)and Homeostasis model assessment of insulin resistance (HOMA-IR) were calculated. RESULTS (1) The baseline FPG, 2hPG, HbA1c, ΔCP30/ΔG30, AUCCP180 and HOMA-IR were comparable between the two groups(P>0.05). (2) Compared with subjects in group A, FPG, 2hPG and HbA1c levels were significantly decreased in subjects in group B [(8.33±0.99) mmol/L vs (6.64±0.79)mmol/L, (13.85±0.86) mmol/L vs (8.65±1.12) mmol/L, (7.82±0.31)% vs (6.82±0.53)%, P<0.05]. (3) Compared with group A, ΔCP30/ΔG30 and AUCCP180 were significantly increased, and HOMA-IR was significantly decreased in group B(0.22±0.13 vs 0.70±0.38, 12.52±5.30 vs 21.16±3.17, 9.46±4.88 vs 4.30±2.68, P<0.05). CONCLUSION LIRA treatment in combination with hUC-MSCs improves glucose metabolism and the β cell function in type 2 diabetic patients. (ClinicalTrials.gov NCT01954147).
Collapse
Affiliation(s)
| | | | - X J Xu
- Fuzhou General Hospital of Nanjing Command, PLA, Fuzhou 350025, China
| | | | | | | | | | | | | |
Collapse
|
18
|
Liu JX, Huang LH, Fu XX, Liu H, Yang YL, Cheng XH, Ni TT. [The audiological characteristics of large vestibular aqueduct syndrome in infants and young children]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1702-1705. [PMID: 29871178 DOI: 10.13201/j.issn.1001-1781.2016.21.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the audiological characteristics of large vestibular aqueduct syndrome(LVAS) in infants and young children, and to provide suggestion for the early diagnosis and early intervention.Method:One hundred and twenty-four cases diagnosed as LVAS were enrolled in our study. Acoustic immittance, pediatric audiometry and(or) auditory steady state responses and auditory brainstem response test were tested to analyze the degree and configuration of hearing loss, and air-bone threshold difference and short latency negative response in auditory brainstem response.Result:The configuration of the hearing loss, includes 44.8%(111/248) of high frequency loss, 19.0%(47/248) of flat, 13.7%(34/248) of rising, 3.6%(9/248) of U type, and 19.0%(47/248) of the configuration which cannot be distinguished. The distribution of the degree of the hearing loss in total 124 cases (248 ears) includes 73.4%(182/248) of profound hearing loss, 16.9%(42/248) of severe hearing loss, 6.9%(17/248) of moderate hearing loss, and 2.8%(7/248)of mild hearing loss. The acoustically evoked short latency negative response in ABR accounted for 27.4%(68/248). The emergence of ABR air-bone threshold difference accounted for 24.6%(61/248), and the mean difference was(19.3±14.2) dB nHL.Conclusion:Infants and young children with large vestibular aqueduct syndrome mostly has the characteristics of high frequency hearing loss curve, acoustically evoked short latency negative response in ABR and ABR bone-air threshold difference, that will remind clinicians of LVAS.
Collapse
Affiliation(s)
- J X Liu
- Beijing Institute of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100005, China
| | - L H Huang
- Beijing Institute of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100005, China
| | - X X Fu
- Beijing Institute of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100005, China
| | - H Liu
- Beijing Institute of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100005, China
| | - Y L Yang
- Beijing Institute of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100005, China
| | - X H Cheng
- Beijing Institute of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100005, China
| | - T T Ni
- Beijing Institute of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100005, China
| |
Collapse
|
19
|
Du GD, Ma L, Lv YH, Huang LH, Fan CY, Xiang Y, Lei Q, Hu R. [The relevance between obstructive sleep apnea hypopnea syndrome andchronic obstructive pulmonary disease in China: A Meta-analysis]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1620-1625. [PMID: 29871158 DOI: 10.13201/j.issn.1001-1781.2016.20.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Indexed: 06/08/2023]
Abstract
Objective:To assess the correlation between obstructive sleep apnea hypopnea syndrome(OSAHS) and chronic obstructive pulmonary disease(COPD).Method: Databases such as Chinese Biomedical Literature Database, PubMed, Chinese Academic Journals full-text database, Wanfang Resource Database and Chongqing VIP have been searched to collect literatures about the relationship between OSAHS and COPD. The literature in conference proceedings and certain unpublished articles were also manually retrieved. RCT conformed to the condition was evaluated according to the standards of literature assessment, and the data has been extracted. The RevMan5.3 software was applied to carry out the same Metaanalysis.Result: Totally 19 articles were included, and Metaanalysis reveal that overlap syndrome(OS) patient's apnea hypopnea index is significantly higher than those of OSAHS patients[WMD=7.56, 95%CI(4.19,10.94), P<0.01]; The LSaO₂ of OS patients is significantly lower than OSAHS patients[WMD=-10.50, 95%CI(-11.58, -6.08),P<0.01]; OS patients' FEV₁/FVC is significantly lower than COPD patients[WMD=4.65,95%CI(1.15,8.15),P<0.01].The results revealed that subgroup analysis according to the sample volume, age, body mass index(BMI) and FEV₁/FVC between OS patients and OSAHS patients has heterogeneity, but when analysis with the score of ESS the heterogeneity does not exist. Further, the subgroup analysis according to the sample volume, BMI, AHI,LSaO₂ and the time of Oxygen is lower than 90%(T90) those index between OS patients and COPD patients has heterogeneity, and the heterogeneity does not exist when subgroup is analyses with neck circumference. The funnel schema was nearly symmetry with little bias.Conclusion:The experimental results indicate that OSAHS is significantly related with COPD, and they may be the mutual risk factor for each other..
Collapse
Affiliation(s)
- G D Du
- Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, 650500, China
| | - L Ma
- Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, 650500, China
| | - Y H Lv
- Respiratory Medicine of First People's Hospital of Yunnan Province
| | - L H Huang
- Respiratory Medicine of First People's Hospital of Yunnan Province
| | - C Y Fan
- Respiratory Medicine of First People's Hospital of Yunnan Province
| | - Y Xiang
- Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, 650500, China
| | - Q Lei
- Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, 650500, China
| | - R Hu
- Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, 650500, China
| |
Collapse
|
20
|
Du YT, Cui QJ, Huang LH. [Progress in the clinical application of gene detection technology of deafness]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:667-670. [PMID: 29871107 DOI: 10.13201/j.issn.1001-1781.2016.08.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Indexed: 11/12/2022]
Abstract
Along with the development of modern science and technology, the clinical application of deafness gene detection technology is becoming more and more extensive. Gene detection technology has experienced the process from the gene chip technology to the first generation DNA sequencing technology, and then to the second generation DNA sequencing technology. They are widely used in diagnosis of hereditary deafness etiology in clinical practice. In recent years, they are further applicated in the detection of neonatal deafness gene screening, prenatal diagnosis and pre marital and pre pregnancy. This paper will reviews the significance, technology progress, clinical diagnosis and application of gene detection technology.
Collapse
|
21
|
Hu D, Luo W, Fan LF, Liu FL, Gu J, Deng HM, Zhang C, Huang LH, Feng QL. Dynamics and regulation of glycolysis-tricarboxylic acid metabolism in the midgut of Spodoptera litura during metamorphosis. Insect Mol Biol 2016; 25:153-162. [PMID: 26683413 DOI: 10.1111/imb.12208] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Significant changes usually take place in the internal metabolism of insects during metamorphosis. The glycolysis-tricarboxylic acid (glycolysis-TCA) pathway is important for energy metabolism. To elucidate its dynamics, the mRNA levels of genes involved in this pathway were examined in the midgut of Spodoptera litura during metamorphosis, and the pyruvate content was quantified. The expression patterns of these genes in response to starvation were examined, and the interaction between protein phosphatase 1 (PP1) and phosphofructokinase (PFK) was studied. The results revealed that the expression or activities of most glycolytic enzymes was down-regulated in prepupae and then recovered in some degree in pupae, and all TCA-related genes were remarkably suppressed in both the prepupae and pupae. Pyruvate was enriched in the pupal midgut. Taken together, these results suggest that insects decrease both glycolysis and TCA in prepupae to save energy and then up-regulate glycolysis but down-regulate TCA in pupae to increase the supply of intermediates for construction of new organs. The expression of all these genes were down-regulated by starvation, indicating that non-feeding during metamorphosis may be a regulator of glycolysis-TCA pathway in the midgut. Importantly, interaction between PP1 and PFK was identified and is suggested to be involved in the regulation of glycolysis.
Collapse
Affiliation(s)
- D Hu
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
| | - W Luo
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
| | - L F Fan
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
| | - F L Liu
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
| | - J Gu
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
| | - H M Deng
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
| | - C Zhang
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - L H Huang
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Q L Feng
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
| |
Collapse
|
22
|
Shao RY, Huang LH, Feng ZX. [An investigative study: relationships between nursing work environment, job satisfaction, and intention to leave among nurses]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:134-137. [PMID: 27014895 DOI: 10.3760/cma.j.issn.1001-9391.2016.02.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
|
23
|
Zheng LH, Rao CH, Gu NT, Huang LH, Qiu Q. Influence of wavefront aberration on the imaging performance of the solar grating spectrometer. Opt Express 2016; 24:153-167. [PMID: 26832247 DOI: 10.1364/oe.24.000153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The solar grating spectrometer is an important tool to study the thermodynamic properties of the solar atmosphere with different height distribution, but its imaging performance will be degraded by the wavefront aberration. On the other hand, narrow slit of the grating spectrometer will filter the wavefront aberration to a certain extent. In this paper, the mathematical relation between the wavefront aberration and the imaging performance of the grating spectrometer is derived. The numerical simulation is performed and is validated by the experiment. The results demonstrate that: The influence of the wavefront aberration with the different types and magnitudes on the spectral resolution and the energy utilization is different. The influence of the different slits on the wavefront aberrations is different. Generally, the smaller the slit is, the better the spectral resolution is. However, this is not true for the low-frequency dominated aberration, e.g. the defocus, since its low frequency will also be blocked by the narrow slit. If the influence of the filter slit on the wavefront aberration cannot be taken into account, it will lead to adaptive optics over-compensation.
Collapse
|
24
|
Lin KC, Tsai MY, Chi CL, Yu LK, Huang LH, Chen CA. Serum ferritin is associated with arterial stiffness in hemodialysis patients: results of a 3-year follow-up study. Int Urol Nephrol 2015; 47:1847-53. [PMID: 26329743 DOI: 10.1007/s11255-015-1090-1] [Citation(s) in RCA: 6] [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: 05/05/2015] [Accepted: 08/14/2015] [Indexed: 01/28/2023]
Abstract
BACKGROUND Iron may contribute to vascular injury through reactive oxygen species. Hemodialysis patients frequently receive iron supply for correction of anemia and are at a high risk of cardiovascular disease. We tested the relationship between iron status and change in arterial stiffness in hemodialysis patients. PATIENTS AND METHODS We measured iron status in 53 hemodialysis patients and studied the association with clinical, biochemical, and arterial stiffness measured by brachial-ankle pulse wave velocity (baPWV) over 3 years. The blood pressure was controlled to below 140/90 mmHg by anti-hypertensive drugs. RESULTS Median and interquartile range of baseline baPWV, baPWV at 3 years, and ΔbaPWV (difference between 3-year baPWV and baseline baPWV) were following: 17.6 (14.8-18.9), 16.9 (15.3-19.9), and 0.2 (-1.2 to 2.7) m/s. At baseline, baPWV was positively correlated with age, serum ferritin, and systolic blood pressure in univariate analysis. However, in multivariate analysis, only age and serum ferritin remained the significant determinants of baseline baPWV. After 3 years, ΔbaPWV was negatively correlated with age and positively with 3-year averaged serum ferritin in univariate analysis. Then, in multivariate analysis, only 3-year averaged serum ferritin was the important determinant of ΔbaPWV. ΔbaPWV was significantly increased in patients with 3-year averaged serum ferritin >500 ng/mL compared to patients with 3-year averaged serum ferritin ≤500 ng/mL. CONCLUSIONS In hemodialysis patients, serum ferritin associates with the progressive arterial stiffness, especially when serum ferritin >500 ng/mL.
Collapse
Affiliation(s)
- Kao-Chang Lin
- Department of Biotechnology, Southern Taiwan University, Tainan, Taiwan.,Department of Neurology, Chi-Mei Medical Center, Tainan, Taiwan
| | - Meng-Yi Tsai
- Department of Hematology and Oncology, Tainan Sinlau Hospital, Tainan, Taiwan
| | - Chun-Ling Chi
- Department of Family Medicine, Tainan Sinlau Hospital, Tainan, Taiwan
| | - Lai-King Yu
- Division of Nephrology, Tainan Sinlau Hospital, No. 57, 1 Sec., Dongmen Rd., Tainan, Taiwan
| | - Li-Hsueh Huang
- Division of Nephrology, Tainan Sinlau Hospital, No. 57, 1 Sec., Dongmen Rd., Tainan, Taiwan
| | - Chien-An Chen
- Division of Nephrology, Tainan Sinlau Hospital, No. 57, 1 Sec., Dongmen Rd., Tainan, Taiwan.
| |
Collapse
|
25
|
Chen YH, Lin KC, Tsai YF, Yu LK, Huang LH, Chen CA. Anti-platelet factor 4/heparin antibody is associated with progression of peripheral arterial disease in hemodialysis patients. Int Urol Nephrol 2015. [PMID: 26198856 DOI: 10.1007/s11255-015-1056-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND Heparin therapy may induce anti-platelet factor 4/heparin antibody (PF4-H Ab). Hemodialysis patients receive scheduled heparin and are at a risk of developing PF4-H Ab. Hemodialysis patients are also at a high risk of peripheral arterial disease (PAD). This study examines whether chronic PF4-H Ab exposure contributes to the progression of PAD measured by ankle brachial index (ABI) in hemodialysis patients. MATERIALS AND METHODS A total of 71 hemodialysis patients were enrolled, and the association between clinical, biochemical parameters and ABI after 3 years was studied. PF4-H Ab was evaluated by ELISA, and patients with titer ≥ 0.4 were taken as having PF4-H Ab. RESULTS Mean ABI was 1.04 ± 0.18 at baseline and 1.01 ± 0.17 after 3 years. Mean ΔABI (change in ABI after 3 years) was -0.04 ± 0.13. PF4-H Ab was positive in 26 patients. PF4-H Ab was not related to hemodialysis duration, DM history, smoking and age. Platelet count showed no correlation with PF4-H Ab. However, there was significance in ΔABI between PF4-H Ab-positive and PF4-H Ab-negative patients (p = 0.002). ΔABI was negatively correlated with PF4-H Ab and 3-year averaged serum Ca × P only (β = -0.378, p = 0.001; β = -0.263, p = 0.018, respectively). However, in PF4-H Ab-positive patients, the extent of ΔABI did not correlate with PF4-H Ab titers (r = -0.021, p = 0.921). CONCLUSIONS PF4-H Ab positivity, along with high levels of serum Ca × P, played a potential role in the progression of PAD over time.
Collapse
Affiliation(s)
- Yen-Hsun Chen
- Division of Cardiology, Tainan Sinlau Hospital, Tainan, Taiwan, Republic of China
| | | | | | | | | | | |
Collapse
|
26
|
Feng HJ, Ouyang W, Liu JH, Sun YG, Hu R, Huang LH, Xian JL, Jing CF, Zhou MJ. Global microRNA profiles and signaling pathways in the development of cardiac hypertrophy. ACTA ACUST UNITED AC 2014; 47:361-8. [PMID: 24728214 PMCID: PMC4075303 DOI: 10.1590/1414-431x20142937] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 01/21/2014] [Indexed: 11/22/2022]
Abstract
Hypertrophy is a major predictor of progressive heart disease and has an adverse
prognosis. MicroRNAs (miRNAs) that accumulate during the course of cardiac
hypertrophy may participate in the process. However, the nature of any interaction
between a hypertrophy-specific signaling pathway and aberrant expression of miRNAs
remains unclear. In this study, Spague Dawley male rats were treated with transverse
aortic constriction (TAC) surgery to mimic pathological hypertrophy. Hearts were
isolated from TAC and sham operated rats (n=5 for each group at 5, 10, 15, and 20
days after surgery) for miRNA microarray assay. The miRNAs dysexpressed during
hypertrophy were further analyzed using a combination of bioinformatics algorithms in
order to predict possible targets. Increased expression of the target genes
identified in diverse signaling pathways was also analyzed. Two sets of miRNAs were
identified, showing different expression patterns during hypertrophy. Bioinformatics
analysis suggested the miRNAs may regulate multiple hypertrophy-specific signaling
pathways by targeting the member genes and the interaction of miRNA and mRNA might
form a network that leads to cardiac hypertrophy. In addition, the multifold changes
in several miRNAs suggested that upregulation of rno-miR-331*, rno-miR-3596b,
rno-miR-3557-5p and downregulation of rno-miR-10a, miR-221, miR-190, miR-451 could be
seen as biomarkers of prognosis in clinical therapy of heart failure. This study
described, for the first time, a potential mechanism of cardiac hypertrophy involving
multiple signaling pathways that control up- and downregulation of miRNAs. It
represents a first step in the systematic discovery of miRNA function in
cardiovascular hypertrophy.
Collapse
Affiliation(s)
- H J Feng
- Zhujiang Hospital, Department of Nuclear Medicine, Southern Medical University, Guangzhou, China
| | - W Ouyang
- Zhujiang Hospital, Department of Nuclear Medicine, Southern Medical University, Guangzhou, China
| | - J H Liu
- Zhujiang Hospital, Department of Nuclear Medicine, Southern Medical University, Guangzhou, China
| | - Y G Sun
- Zhujiang Hospital, Department of Nuclear Medicine, Southern Medical University, Guangzhou, China
| | - R Hu
- Zhujiang Hospital, Department of Nuclear Medicine, Southern Medical University, Guangzhou, China
| | - L H Huang
- Zhujiang Hospital, Department of Nuclear Medicine, Southern Medical University, Guangzhou, China
| | - J L Xian
- Zhujiang Hospital, Department of Nuclear Medicine, Southern Medical University, Guangzhou, China
| | - C F Jing
- National Engineering Research Center, South China Sea Marine Biotechnology, Sun Yat-Sen University, Guangzhou, China
| | - M J Zhou
- National Engineering Research Center, South China Sea Marine Biotechnology, Sun Yat-Sen University, Guangzhou, China
| |
Collapse
|
27
|
Huang LH, Yan QJ, Kopparapu NK, Jiang ZQ, Sun Y. Astragalus membranaceus lectin (AML) induces caspase-dependent apoptosis in human leukemia cells. Cell Prolif 2011; 45:15-21. [PMID: 22172162 DOI: 10.1111/j.1365-2184.2011.00800.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVES Recently, plant lectins have attracted great interest due to their various biological activities such as anti-cancer, anti-fungal and anti-viral activities. We have reported earlier concerning anti-proliferation of human cancer cell lines by a galactose-binding lectin (AML), from a Chinese herb, ASTRAGALUS MEMBRANACEUS: In the present study, detailed investigations into the mechanism of such anti-proliferation properties have been carried out. MATERIALS AND METHODS Mechanism of apoptosis initiation in K562 cells by AML was investigated by morphology, flow cytometry and western blot analysis. RESULTS AML induced apoptosis in a caspase-dependent manner in the chronic myeloid leukemia cell line, K562. Furthermore, we observed that cytotoxicity and apoptosis of K562 cells induced by AML were completely abolished in presence of lactose or galactose. CONCLUSIONS Our results suggest that AML could act as a potential anti-cancer drug.
Collapse
Affiliation(s)
- L H Huang
- Bioresource Utilization Laboratory, College of Engineering, China Agricultural University, Beijing, China
| | | | | | | | | |
Collapse
|
28
|
Abstract
This retrospective study examined 220 Chinese chronic hepatitis B virus carriers over 5 years. After initial liver biopsy, liver function tests and serological analysis, patients underwent further tests of liver function and hepatitis B seromarkers at 6-month intervals. Second and third liver biopsies were performed in 56 and 23 patients, respectively. Liver pathology was classified according to inflammatory activity (G(0) - G(4)) and degree of fibrosis (S(0) - S(4)). A significantly greater proportion of hepatitis B e antigen antibody-positive patients had a more severe level of inflammation and fibrosis than patients who were hepatitis B e antigen (HBeAg)-positive. Abnormal inflammation (≥ G(2)) occurred in 122 (55.5%) patients. Hepatitis B reactivation occurred in 35 (15.9%) patients: 33 had obvious liver inflammation at the initial biopsy (≥ G(2)) and only two had a low level of liver inflammation (G(0) - G(1)). The hepatitis B reactivation rate was significantly related to age but not to gender. Hepatitis B surface antigen clearance was 1.55% per year and HBeAg seroconversion was 5.36% per year. In conclusion, hepatitis B reactivation was closely correlated with age and the level of liver inflammation.
Collapse
Affiliation(s)
- Z H Lu
- Department of Epidemiology, Wuxi Infectious Disease Hospital, 88 Xingyuan Zhong Road, Wuxi 214005, China.
| | | | | | | | | | | | | |
Collapse
|
29
|
Shi Y, Zhou L, Huang LH, Lian YT, Zhang XM, Guo H, Wu TC, Cheng LX, He MA. Plasma ferritin levels, genetic variations in HFE gene, and coronary heart disease in Chinese: a case-control study. Atherosclerosis 2011; 218:386-90. [PMID: 21696736 DOI: 10.1016/j.atherosclerosis.2011.05.040] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2011] [Revised: 05/03/2011] [Accepted: 05/24/2011] [Indexed: 10/18/2022]
Abstract
BACKGROUND The association between body iron stores and coronary heart disease (CHD) was inconsistent. We sought to explore this association in Chinese Han population and further examine the association of the variations in hemochromatosis (HFE) gene and CHD risk. METHODS We conducted a case-control study including 1334 CHD patients and 1334 age- and sex-frequency matched controls. The plasma ferritin levels were measured by enzyme linked immunosorbent assay. Genotypes of the tagging single nucleotide polymorphisms (tagSNPs) were determined by TaqMan SNP allelic discrimination. RESULTS The plasma ferritin levels in CHD cases (197.9μg/L [2.7-932.9μg/L]) were higher than those in controls (179.9μg/L [21.1-878.2μg/L]; P=0.028). The odds ratios (ORs) across the tertiles of plasma ferritin levels were 1.0 (reference), 0.93 (0.76-1.13), and 1.23 (1.02-1.48; P for trend=0.028). Adjustment for the traditional risk factors attenuated the associations to null (P for trend=0.22). Compared with the TT genotype of tagSNP rs9366637, subjects with C allele had higher risk of CHD (OR=1.35 for TC and 1.76 for CC; P=0.001 and <0.001 respectively). After adjustment for the conventional risk factors the results remained unchanged. We did not find significantly different plasma ferritin levels among different genotypes of rs9366637 (P=0.52). CONCLUSIONS The plasma ferritin levels were not significantly associated with CHD risk. However, the SNP rs9366637 in HFE gene was associated with higher CHD risk in Chinese Han population. The underlie mechanism remained to be elucidated in further studies.
Collapse
Affiliation(s)
- Y Shi
- Department of Cardiology, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Lung HL, Huang LH, Lin HC, Shyur SD. Allergic contact dermatitis to polyethylene terephthalate mesh. J Investig Allergol Clin Immunol 2009; 19:161-162. [PMID: 19476023] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Affiliation(s)
- H L Lung
- Division of Allergy, Immunology and Rheumatology, Department of Pediatrics, Mackay Memorial Hospital, Taipei, Taiwan
| | | | | | | |
Collapse
|
31
|
Watanabe S, Hirai H, Kambara T, Kojima Y, Nishida H, Sugiura A, Yamauchi Y, Yoshikawa N, Harwood HJ, Huang LH, Kojima N. CJ-13,981 and CJ-13,982, new squalene synthase inhibitors. J Antibiot (Tokyo) 2001; 54:1025-30. [PMID: 11858656 DOI: 10.7164/antibiotics.54.1025] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new squalene synthase (SSase) inhibitors, CJ-13,981 (I) and CJ-13,982 (II), were isolated from the fermentation broth of an unidentified fungus CL 15036. They inhibited human liver microsomal SSase with IC50s of 2.8 and 1.1 microM, respectively, but showed no inhibitory activity against human brain protein farnesyltransferase (PFTase) at 100 microM. Based on FAB-MS and NMR analyses, the structures of I and II were determined to be 3-hydroxy-3,4-dicarboxy-15-hexadecenoic acid and 3-hydroxy-3,4-dicarboxyhexadecanoic acid, respectively.
Collapse
Affiliation(s)
- S Watanabe
- Exploratory Medicinal Sciences, PGRD, Nagoya Laboratories, Pfizer Pharmaceuticals Inc., Aichi, Japan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Sugie Y, Dekker KA, Hirai H, Ichiba T, Ishiguro M, Shiomi Y, Sugiura A, Brennan L, Duignan J, Huang LH, Sutcliffe J, Kojima Y. CJ-15,801, a novel antibiotic from a fungus, Seimatosporium sp. J Antibiot (Tokyo) 2001; 54:1060-5. [PMID: 11858661 DOI: 10.7164/antibiotics.54.1060] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel antibiotic, CJ-15,801 (I), was isolated from the fermentation broth of a fungus, Seimatosporium sp. CL28611. The structure was determined to be a pantothenic acid analog having an alpha,beta-unsaturated carboxylic acid moiety by spectroscopic analyses. The compound inhibits the growth of multi-drug resistant (MDR) Staphylococcus aureus strains with MIC ranging from 6.25 to 50 microg/ml.
Collapse
Affiliation(s)
- Y Sugie
- Exploratory Medicinal Sciences, PGRD, Nagoya Laboratories, Pfizer Pharmaceuticals, Inc., Aichi, Japan.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Sugie Y, Hirai H, Inagaki T, Ishiguro M, Kim YJ, Kojima Y, Sakakibara T, Sakemi S, Sugiura A, Suzuki Y, Brennan L, Duignan J, Huang LH, Sutcliffe J, Kojima N. A new antibiotic CJ-17,665 from Aspergillus ochraceus. J Antibiot (Tokyo) 2001; 54:911-6. [PMID: 11827033 DOI: 10.7164/antibiotics.54.911] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new antibiotic, CJ-17,665 (I) was isolated from the fermentation broth of Aspergillus ochraceus, CL41582. It inhibits growth of multi-drug resistant Staphylococcus aureus, Streptococcus pyogenes, and Enterococcus faecalis, with MICs of 12.5, 12.5 and 25 microg/ml, respectively. The structure contains a diketopiperazine and an indole N-oxide moiety that is unusual in natural products.
Collapse
Affiliation(s)
- Y Sugie
- Exploratory Medicinal Sciences, PGRD, Nagoya Laboratories, Pfizer Pharmaceuticals, Inc., Aichi, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Watanabe S, Hirai H, Ishiguro M, Kambara T, Kojima Y, Matsunaga T, Nishida H, Suzuki Y, Sugiura A, Harwood HJ, Huang LH, Kojima N. CJ-15,183, a new inhibitor of squalene synthase produced by a fungus, Aspergillus aculeatus. J Antibiot (Tokyo) 2001; 54:904-10. [PMID: 11827032 DOI: 10.7164/antibiotics.54.904] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new squalene synthase (SSase) inhibitor, CJ-15,183 (I) was isolated from the fermentation broth of a fungus, Aspergillus aculeatus CL38916. The compound potently inhibited rat liver and Candida albicans microsomal SSases and also inhibited the human enzyme. It also showed antifungal activities against filamentous fungi and a yeast. The structure was determined to be an aliphatic tetracarboxylic acid compound consisting of an alkyl gamma-lactone, malic acid and isocitric acid moieties by spectroscopic studies.
Collapse
Affiliation(s)
- S Watanabe
- Exploratory Medicinal Sciences, PGRD, Nagoya Laboratories, Pfizer Pharmaceuticals Inc., Aichi, Japan.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Sugie Y, Hirai H, Kachi-Tonai H, Kim YJ, Kojima Y, Shiomi Y, Sugiura A, Sugiura A, Suzuki Y, Yoshikawa N, Brennan L, Duignan J, Huang LH, Sutcliffe J, Kojima N. New pyrrolizidinone antibiotics CJ-16,264 and CJ-16,367. J Antibiot (Tokyo) 2001; 54:917-25. [PMID: 11827034 DOI: 10.7164/antibiotics.54.917] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new antibiotics, CJ-16,264 (I) and CJ-16,367 (II), were isolated from the fermentation broth of an unidentified fungus CL39457. These antibiotics have a pyrrolizidinone skeleton, first discovered in fungi. Compounds I and II inhibit the growth of Gram-positive multi-drug resistant bacteria and some Gram-negative strains such as Moraxella catarrhalis and Escherichia coli with altered permeability (imp). Comparison of an antibacterial profile between the two compounds suggested that the gamma-lactone portion of I is important for the activity.
Collapse
Affiliation(s)
- Y Sugie
- Exploratory Medicinal Sciences, PGRD, Nagoya Laboratories, Pfizer Pharmaceuticals, Inc., Aichi, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Ichikawa K, Hirai H, Ishiguro M, Kambara T, Kato Y, Kim YJ, Kojima Y, Matsunaga Y, Nishida H, Shiomi Y, Yoshikawa N, Huang LH, Kojima N. Cytokine production inhibitors produced by a fungus, Oidiodendron griseum. J Antibiot (Tokyo) 2001; 54:697-702. [PMID: 11714224 DOI: 10.7164/antibiotics.54.697] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of diterpenes were isolated from the fermentation broth of a fungus, Oidiodendron griseum CL37215. The diterpenes were identified as LL-Z1271alpha, LL-Z1271gamma, CJ-14,445, PR 1388, CJ-14,604 and a new diterpene, CJ-14,515. They inhibited both lipopolysaccharide-induced interleukin-1beta and tumor necrosis factor-alpha production in human whole blood with IC50s of the range from 0.049 to 100 microM.
Collapse
Affiliation(s)
- K Ichikawa
- Exploratory Medicinal Sciences, PGRD, Nagoya Laboratories, Pfizer Pharmaceuticals Inc., Chita-gun, Aichi, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Chen MY, Huang LH, Wang EK, Cheng NJ, Hsu CY, Hung LL, Shiao YJ. The effectiveness of health promotion counseling for overweight adolescent nursing students in taiwan. Public Health Nurs 2001; 18:350-6. [PMID: 11559418 DOI: 10.1046/j.1525-1446.2001.00350.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
This study examined the effectiveness of health promotion counseling for overweight adolescent nursing students. The Chinese version of an established health promotion counseling booklet developed by the author of this study was used in the counseling. The study employed a one-group pre- and post-quasi-experimental research design from September 1997 to June 1999. A total of 166 (17%) first-year, junior college nursing students were found to be overweight according to the results of a health examination at the school health center at a junior college in the Taipei Metropolitan Area. Of these 166 students, 58 were randomly selected and 49 of these had complete participation records for the 2-year study. All subjects received 8 hours of whole group and 12 hours of small group health promotion counseling over a 1-year period. The results show that health promotion counseling enabled subjects to adopt healthier lifestyles and most of the physiological variables (WLI, HDL, SBP, TC) were significantly improved. This research outcome supports the value of health promotion counseling in school health centers, which incorporates material to help overweight adolescent students live a healthier life.
Collapse
Affiliation(s)
- M Y Chen
- Health Center, Chang Gung Institute of Nursing, Taiwan
| | | | | | | | | | | | | |
Collapse
|
38
|
Huang CH, Huang LH, Lii KH. Synthesis and Structure of (4,4‘-H2bpy)[V2(HPO4)4(4,4‘-bpy)2], a Novel Two-Dimensional Network Compound. Inorg Chem 2001; 40:2625-7. [PMID: 11350244 DOI: 10.1021/ic001169g] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C H Huang
- Department of Chemistry, National Central University, Chungli, Taiwan 320, Republic of China
| | | | | |
Collapse
|
39
|
Zhang G, Oldroyd SD, Huang LH, Yang B, Li Y, Ye R, El Nahas AM. Role of apoptosis and Bcl-2/Bax in the development of tubulointerstitial fibrosis during experimental obstructive nephropathy. Exp Nephrol 2001; 9:71-80. [PMID: 11150855 DOI: 10.1159/000052597] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND/AIMS To examine the role of apoptosis in experimental unilateral ureteral obstruction (UUO). METHODS Rat kidneys were examined 3, 7 and 11 days following UUO or sham operation (SO). Tissue was immunohistochemically stained for alpha-smooth muscle actin (alpha-SMA), proliferating cell nuclear antigen (PCNA), Bcl-2 and Bax proteins. Apoptotic analysis was carried out in kidney sections using in situ end labelling of endonuclease cleaved DNA. RESULTS The relative volume (Vv) of cortical interstitium and interstitial alpha-SMA increased progressively following UUO. ED1-positive monocytes/macrophages peaked at day 7 and significantly decreased at day 11. PCNA-positive cells in tubulointerstitium were significantly increased on day 3. Staining returned to the level of the SO group by day 11, meanwhile those in the interstitium remained much higher than baseline. TUNEL-positive cells were persistently raised following UUO. Transient tubular cell proliferation seemed unable to counteract the apoptosis since tubular atrophy was apparently present by day 11 of UUO. However, interstitial cell proliferation was high enough to overwhelm apoptosis, particularly with respect ot myofibroblasts, since alpha-SMA immunostaining and Vv remained elevated. The ratio of the number of PCNA-positive cells to apoptotic cells formed a predictive pattern for the staining score of interstitial alpha-SMA (R(2) = 47.23%, p < 0.05) and Vv (R(2) = 49.93%, p < 0.05). Tubular Bcl-2 immunostaining peaked on day 3, and then gradually decreased to baseline by day 11. The expression of Bax protein was inhibited on day 3 when compared with that of the SO group, but increased with time following UUO. CONCLUSION These findings suggest an important role for apoptosis and its regulatory proteins in the processes of tubular atrophy and fibrogenesis following UUO.
Collapse
Affiliation(s)
- G Zhang
- Sheffield Kidney Institute, Northern General Hospital, Sheffield, UK
| | | | | | | | | | | | | |
Collapse
|
40
|
Huang LH, Christensen BM, Chen CC. Molecular cloning of a second prophenoloxidase cDNA from the mosquito Armigeres subalbatus: prophenoloxidase expression in blood-fed and microfilariae-inoculated mosquitoes. Insect Mol Biol 2001; 10:87-96. [PMID: 11240640 DOI: 10.1046/j.1365-2583.2001.00241.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Melanization constitutes an important component in various aspects of insect life, including cuticular sclerotization, egg-shell tanning, melanization of parasites and wound healing. Recently, a cDNA encoding prophenoloxidase (pro-PO), a key enzyme in the biosynthesis of melanotic material in insects, was cloned from microfilariae (mf)-inoculated mosquitoes, Armigeres subalbatus. However, results of Northern blot analyses indicated that two pro-POs might be present in Ar. subalbatus and these pro-POs might be responsible for two distinct physiological functions, egg-shell tanning and melanization of parasites. Subsequently, the second pro-PO cDNA (As-pro-PO II) was cloned from blood-fed Ar. subalbatus by rapid amplification of cDNA ends polymerase chain reaction. The 2210 bp As-pro-PO II cDNA contains a 41 bp 5'-non-coding region, a 2064 bp open reading frame and a 105 bp 3'-non-coding region. A hydrophobic signal peptide for endoplasmic reticulum targeting is not found in the N-terminal region. The deduced amino acid sequence of As-pro-PO II shares a high degree of identity (81.5%) with that of the As-pro-PO I obtained from mf-inoculated Ar. subalbatus. Both Northern blot and reverse transcription polymerase chain reaction analysis demonstrated that these two mosquito pro-POs are persistently expressed in mosquito haemocytes and not in fat body, midgut, or ovaries. The expression of As-pro-PO I and As-pro-PO II in mosquitoes is associated with melanization of mf and blood feeding, respectively.
Collapse
Affiliation(s)
- L H Huang
- Department of Parasitology, National Yang-Ming University, Shihpai, Taipei 112, Taiwan
| | | | | |
Collapse
|
41
|
Huang LH, Li JL, Wang SR. Glutamatergic neurotransmission from the optic tectum to the contralateral nucleus rotundus in pigeons. Brain Behav Evol 2000; 52:55-60. [PMID: 9667809 DOI: 10.1159/000006552] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Neuronal responses of 114 cells to electrical stimulation of the optic tectum were extracellularly recorded from the contralateral nucleus rotundus (nRt) in pigeons (Columba livia), and the effects of two glutamatergic antagonists CNQX and CPP, as well as those of GABA, were examined on rotundal cells. The results show that tectal stimulation evokes excitation in neurons of the contralateral nRt and that the excitatory responses are blocked by microiontophoretically applied CNQX, CPP and GABA. It is suggested that the contralateral tectorotundal transmission is excitatory in nature and mediated by both glutamatergic AMPA and NMDA receptors and that GABA is an inhibitory transmitter within the nucleus as well. We also review our previous findings in discussing transmitters participating in the tectofugal pathway.
Collapse
Affiliation(s)
- L H Huang
- Laboratory for Visual Information Processing, Institute of Biophysics, Academia Sinica, Beijing, China
| | | | | |
Collapse
|
42
|
Abstract
Rel transcription factors function in flies and vertebrates in immunity and development. Although Rel proteins regulate diverse processes, the control of their function is conserved. In a two-hybrid screen for additional components of the pathway using the Drosophila I-kappaB protein Cactus as a bait, we isolated a novel coiled-coil protein with N-terminal Arg-Asp (RD)- like motifs that we call Cactin. Like the other components of this pathway, Cactin is evolutionarily conserved. Over-expression of cactin in a cactus(A2) heterozygous background results in the enhancement of the cactus phenotype. Both the embryonic lethality and ventralization are strongly increased, suggesting that cactin functions in the Rel pathway controlling the formation of dorsal-ventral embryonic polarity.
Collapse
Affiliation(s)
- P Lin
- Waksman Institute, Department of Molecular Biology and Biochemistry, Rutgers University, Piscataway,NJ 08854-8020, USA
| | | | | |
Collapse
|
43
|
Abstract
In Drosophila, dorsal-ventral polarity is determined by a maternally encoded signal transduction pathway that culminates in the graded nuclear localization of the Rel protein, Dorsal. Dorsal is retained in the cytoplasm by the IkappaB protein, Cactus. Signal-dependent phosphorylation of Cactus results in the degradation of Cactus and the nuclear targeting of Dorsal. We present an in-depth study of the functional importance of Dorsal phosphorylation. We find that Dorsal is phosphorylated by the ventral signal while associated with Cactus, and that Dorsal phosphorylation is essential for its nuclear import. In vivo phospholabeling of Dorsal is limited to serine residues in both ovaries and early embryos. A protein bearing mutations in six conserved serines abolishes Dorsal activity, is constitutively cytoplasmic, and appears to eliminate Dorsal phosphorylation, but still interacts with Cactus. Two individual serine-to-alanine mutations produce unexpected results. In a wild-type signaling background, a mutation in the highly conserved PKA site (S312) produces only a weak loss-of-function; however, it completely destabilizes the protein in a cactus mutant background. Significantly, the phosphorylation of another completely conserved serine (S317) regulates the high level of nuclear import found in ventral cells. We conclude that the formation of a wild-type Dorsal nuclear gradient requires the phosphorylation of both Cactus and Dorsal. The strong conservation of the serines suggests that phosphorylation of other Rel proteins is essential for their proper nuclear targeting.
Collapse
Affiliation(s)
- E A Drier
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | | | | |
Collapse
|
44
|
Li CX, Li L, Lou J, Yang WX, Lei TW, Li YH, Liu J, Cheng ML, Huang LH. The protective effects of traditional Chinese medicine prescription, han-dan-gan-le, on CCl4-induced liver fibrosis in rats. Am J Chin Med 1998; 26:325-32. [PMID: 9862020 DOI: 10.1142/s0192415x98000361] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Han-Dan-Gan-Le, a Chinese medicine preparation composed of Salvia miltorrhiza, Radix paeoniae, Astragalus membranaceus, Stephania tetrandra, and dried leaves of Ginkgo biloba, has been used successfully to treat human liver fibrosis and cirrhosis for years. This study was designed to examine the mechanisms of the protection. Male Wistar rats were given CCl4 (1.2 ml/kg, 2 times/week), 20% fat diet, and 30% alcohol in drinking water (every other day) for 6 weeks. Han-Dan-Gan-Le (0.5 and 1.0 g/kg, p.o., daily for 6 weeks) was administered to rats simultaneously to examine the protective effects against CCl4-induced liver fibrosis. The experimentally-induced liver fibrosis and other morphological alterations were significantly ameliorated by Han-Dan-Gan-Le. Han-Dan-Gan-Le treatments decreased CCl4-induced hepatic collagen accumulation by more than 50%, and significantly increased urinary excretion of hydroxyproline. The CCl4-induced lipid peroxidation in liver and serum was ameliorated as a result of Han-Dan-Gan-Le treatment, possibly by restoring the activity of superoxide dismutase activity in liver and erythrocytes, In conclusion, Han-Dan-Gan-Le is effective in protecting against liver fibrosis. The mechanisms of the protection appear to be due to its antioxidant properties and the modulation of hepatic collagen metabolism.
Collapse
Affiliation(s)
- C X Li
- Department of Pharmacology, Guiyang Medical College, Guizhou, China
| | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Huang LH, Tseng YH, Yang MT. Isolation and characterization of the Xanthomonas campestris rpoH gene coding for a 32-kDa heat shock sigma factor. Biochem Biophys Res Commun 1998; 244:854-60. [PMID: 9535756 DOI: 10.1006/bbrc.1998.8367] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Degenerate oligonucleotide primers corresponding to the conserved regions of bacterial heat shock sigma factor RpoH (sigma 32) were used to amplify a 190-bp fragment by PCR on the X. campestris pv. campestris strain 11 chromosome. Using this fragment as a probe, plasmid pXC57 carrying a 4.7-kb insert was isolated from a genomic library of Xc11. Sequence analysis of a stretch of 2,053 bp from the pXC57 insert revealed an ORF encoding a polypeptide of 291 aa (32,854 dal) which displays 59.6% and 57.3% identity to the rpoH gene products of E. coli and P. aeruginosa, respectively. The Xc11 rpoH gene was able to complement the RpoH deficient E. coli strain A7448. Both amino acid and mRNA sequences deduced from the Xc11 rpoH gene show structural features characteristics of the corresponding sequences from those of the gamma subgroup proteobacteria. The RpoH levels in Xc11 were demonstrated to increase transiently in response to heat shock treatment by immunoblot analysis using the polyclonal antibody raised against the purified Xc11 RpoH.
Collapse
Affiliation(s)
- L H Huang
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan, Republic of China
| | | | | |
Collapse
|
46
|
Inagaki T, Kaneda K, Suzuki Y, Hirai H, Nomura E, Sakakibara T, Yamauchi Y, Huang LH, Norcia M, Wondrack LM, Sutcliffe JA, Kojima N. CJ-12,373, a novel topoisomerase II inhibitor: fermentation, isolation, structure elucidation and biological activities. J Antibiot (Tokyo) 1998; 51:112-6. [PMID: 9544930 DOI: 10.7164/antibiotics.51.112] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel isochroman carboxylic acid CJ-12,373 was isolated from Penicillium sp. CL22557. CJ-12,373 inhibits both DNA gyrase-mediated supercoiling and relaxation without the formation of a cleavage intermediate, suggesting that CJ-12,373 inhibits DNA gyrase at a stage distinct from the religation step. CJ-12,373 is not selective for procaryotic DNA gyrase as it also inhibits relaxation mediated by eukaryotic topoisomerase II. The antimicrobial potency of CJ-12,373, however, is largely attributed to its inhibition of DNA gyrase.
Collapse
Affiliation(s)
- T Inagaki
- Central Research Division, Pfizer Pharmaceuticals Inc., Aichi, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Dekker KA, Inagaki T, Gootz TD, Huang LH, Kojima Y, Kohlbrenner WE, Matsunaga Y, McGuirk PR, Nomura E, Sakakibara T, Sakemi S, Suzuki Y, Yamauchi Y, Kojima N. New quinolone compounds from Pseudonocardia sp. with selective and potent anti-Helicobacter pylori activity: taxonomy of producing strain, fermentation, isolation, structural elucidation and biological activities. J Antibiot (Tokyo) 1998; 51:145-52. [PMID: 9544935 DOI: 10.7164/antibiotics.51.145] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Eight novel quinolones with anti-Helicobacter pylori activity were isolated from the actinomycete Pseudonocardia sp. CL38489. The quinolones were very potent against H. pylori with MICs up to 0.1 ng/ml. The quinolones appear to be specific for H. pylori, since they did not show antimicrobial activity when tested against a panel of other microorganisms.
Collapse
Affiliation(s)
- K A Dekker
- Central Research Division, Pfizer Pharmaceuticals Inc., Aichi, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Yang YH, Teng RJ, Tang JR, Yau KI, Huang LH, Hsieh FJ. Etiology and outcome of hydrops fetalis. J Formos Med Assoc 1998; 97:16-20. [PMID: 9481059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Hydrops fetalis is a morbid condition caused by a wide variety of diseases. Although treatment for some underlying pathologies is becoming available, the prognosis remains poor. To analyze the etiology and outcome of hydrops fetalis, we reviewed the records of 79 fetuses encountered at the National Taiwan University Hospital between January 1993 and October 1996. The mean +/- standard deviation gestational age at presentation was 24.9 +/- 6.3 weeks. One case was due to RhE incompatibility. Seventy-eight fetuses were diagnosed as having nonimmune hydrops fetalis; this was idiopathic in 20 fetuses. In the other 58, the causes and associated conditions were classified into eight groups: hematologic (25), cardiovascular (15), chromosomal (5), gastrointestinal (4), cystic hygroma (3), pulmonary (2), infection (2), and miscellaneous (3). One fetus with cystic hygroma also had a chromosomal abnormality (Turner's syndrome). The most common cause of nonimmune hydrops fetalis was homozygous alpha-thalassemia (31%). Twenty-nine fetuses were lost to follow-up after initial evaluation and 50 fetuses were delivered at our hospital. Of these, there were eight cases of antepartum death, 24 cases of intrapartum death, and 18 live births. Seventeen of the live-born infants were treated at our neonatal intensive care unit, of whom only seven survived.
Collapse
Affiliation(s)
- Y H Yang
- Department of Pediatrics, National Taiwan University, Medical College, Taipei, Taiwan
| | | | | | | | | | | |
Collapse
|
49
|
Abstract
The polymeric surfaces of three commercially available nylon films with mesh openings of 5 microns, 10 microns and 20 microns were treated with anhydrous ammonia gaseous plasma. Cells cultured on the plasma-treated nylon films have higher proliferation rate and assume morphology distinct from those cultured on the unmodified films. Of the three plasma-modified membranes, the one with 5 microns mesh openings supported a largest population of cell growth. The plasma-treated nylon meshes provided a stronger anchorage for the collagen matrices formed within the mesh openings. Application of this collagen/nylon meshes for cell culturing is demonstrated.
Collapse
Affiliation(s)
- S M Kuo
- Institute of Biomedical Engineering, National Yang Ming University, Shi Pai, Pei Tou, Taipei, Taiwan, ROC
| | | | | | | |
Collapse
|
50
|
Dabrah TT, Harwood HJ, Huang LH, Jankovich ND, Kaneko T, Li JC, Lindsey S, Moshier PM, Subashi TA, Therrien M, Watts PC. CP-225,917 and CP-263,114, novel Ras farnesylation inhibitors from an unidentified fungus. I. Taxonomy, fermentation, isolation, and biochemical properties. J Antibiot (Tokyo) 1997; 50:1-7. [PMID: 9066758 DOI: 10.7164/antibiotics.50.1] [Citation(s) in RCA: 96] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
During the course of our screening for squalene synthase inhibitors and Ras farnesylation inhibitors, a novel fungal culture was discovered to produce two structurally unique compounds, CP-225,917 and CP-263,114, as well as zaragozic acid A (squalestatin I). The two compounds are characterized by a bicyclo[4.3.1]dec-1,6-diene core plus two extended alkyl chains. CP-225,917 and CP-263,114 inhibit Ras farnesyl transferase from rat brain with IC50 values of 6 microM and 20 microM, respectively. CP-225,917 inhibits squalene synthase with an IC50 value of 43 microM and CP-263,114 with an IC50 of 160 microM. The producing organism, though not fully classified, exhibits the characteristics of a sterile Phoma species.
Collapse
Affiliation(s)
- T T Dabrah
- Pfizer Central Research, Groton, CT 06340, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|