1.Risk factors for sarcopenia in patients with Wilson’s disease-related liver cirrhosis and their impact on clinical outcomes
Weiqi WANG ; Taohua WEI ; Nannan QIAN ; Wenming YANG ; Yulong YANG ; Yuqi SONG ; Wenjie HAO ; Yue YANG ; Hu XI ; Wei HE
Journal of Clinical Hepatology 2025;41(10):2075-2081
ObjectiveTo investigate the incidence rate of sarcopenia in patients with Wilson’s disease (WD)-related liver cirrhosis, as well as the risk factors for sarcopenia and their impact on clinical outcomes. MethodsA total of 140 patients with WD-related liver cirrhosis who were treated in The First Affiliated Hospital of Anhui University of Chinese Medicine from January 2019 to June 2020, and according to the third lumbar skeletal muscle mass index (L3 SMI), the patients were divided into sarcopenia group and non-sarcopenia group. Nutritional risk screening, anthropometric measurements, and blood biochemical tests were performed for the patients to identify the influencing factors for sarcopenia. The patients were followed up for 36 — 48 months, and survival status and complications were compared between the two groups. The independent-samples t test was used for comparison of normally distributed continuous data between two groups, and the chi-square test and the Mann-Whitney U rank sum test were used for comparison of categorical data between two groups. A binary Logistic regression analysis was used to investigate the influencing factors for sarcopenia, and univariate and multivariate Cox regression analyses were used to investigate the risk factors for the prognosis of patients with WD-related liver cirrhosis. The Kaplan-Meier survival curve was plotted, and the Log-rank test was used for comparison between groups. ResultsAmong the 140 patients with WD-related liver cirrhosis, 53 (37.9%) developed sarcopenia, with significantly lower body mass index (BMI) and L3 SMI than the patients without sarcopenia (t=10.550 and 3.982, both P<0.001). The multivariate Logistic regression analysis showed that age (odds ratio [OR]=2.243, 95% confidence interval [CI]: 1.196 — 4.208, P=0.012), sex (OR=0.450, 95%CI: 0.232 — 0.872, P=0.018), BMI (OR=0.126, 95%CI: 0.089 — 0.294, P<0.001), and hepatic encephalopathy (OR=8.367, 95%CI: 2.423 — 28.897, P<0.001) were the main influencing factors for sarcopenia in patients with WD-related liver cirrhosis. Compared with the non-sarcopenia group, the sarcopenia group had significantly higher mortality rate (χ2=6.158, P=0.019) and significantly higher incidence rates of infection (χ2=8.008, P=0.040), recurrent abdominal/pleural efflux (χ2=17.742, P<0.001), and hepatic encephalopathy (χ2=4.338, P=0.039). The multivariate Cox regression analysis showed that sarcopenia (hazard ratio [HR]=4.685, P=0.002) and hepatic encephalopathy (HR=19.156, P<0.001) were independent risk factors for death in patients with WD-related liver cirrhosis. The Kaplan-Meier survival curve analysis showed a significant reduction in survival rate in the patients with sarcopenia (P=0.003). ConclusionSarcopenia is one of the manifestations of malnutrition in patients with WD-related liver cirrhosis, which increases the risk of mortality and other complications and has an adverse effect on prognosis. There is an increased risk of sarcopenia in male patients or patients with hepatic encephalopathy, a lower level of BMI or an older age.
2.Effect of Gandou Fumu Decoction on Autophagy in Mice with Liver Fibrosis in Wilson's Disease by Regulating Expression of miR-29b-3p/ULK1
Nannan QIAN ; Wenming YANG ; Taohua WEI ; Lulu TANG ; Hailin JIANG ; Wenjie HAO ; Yulong YANG ; Shuaishuai ZHANG ; Sheng HU
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(2):17-25
ObjectiveTo explore the mechanism and pathway of Gandou Fumu decoction (GDFMD) in the development of liver fibrosis in Wilson's disease (WD). MethodFirst, 30 TX-j mice were randomly divided into the model group, high-dose, medium-dose, and low-dose GDFMD groups, and penicillamine group, with six mice in each group, and another six wild-type mice were used as the normal group. The high-dose, medium-dose, and low-dose GDFMD groups were intragastrically administered drugs of 13.92, 6.96, 3.48 g·kg-1. In the penicillamine group, 0.1 g·kg-1 of penicillamine was given by intragastric administration. The model group and the normal group were given equal volume of normal saline, once a day, for four consecutive weeks. Samples were collected four weeks after gavage, and enzyme-linked immunosorbent assay (ELISA) was used to detect type Ⅲ procollagen peptide (PCⅢ), collagen type Ⅳ (Col Ⅳ), hyaluronic acid (HA), and laminin (LN). Hematoxylin-eosin (HE), Masson, and picric acid-Sirus red collagen (Sirus Red) staining were used to observe the histopathological changes of liver fibrosis. Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR), immunohistochemistry, and Western blot were used to observe the expressions of α-smooth muscle actin (α-SMA) and collagen type Ⅰ (Col Ⅰ), which were related to the activation of hepatic stellate cells (HSCs). The expression of miR-29b-3p was observed by Real-time PCR. The expression of Unc-51-like kinase 1 (ULK1) and its downstream-related factors were observed by Western blot. The downstream genes of miR-29b-3p were verified by the dual luciferase reporter gene detection method. ResultCompared with the normal group, the four items of liver fibrosis (PCⅢ, Col Ⅳ, HA, and LN) in the model group were significantly abnormal (P<0.01), and the pathology was significantly abnormal. The expression of HSC activation-related indicators including α-SMA and Col Ⅰ, as well as α-SMA mRNA and Col Ⅰ mRNA was up-regulated (P<0.05, P<0.01), and miR-29b-3p expression was down-regulated (P<0.01). ULK1, p-ULK1, autophagy-related gene 13 (Atg13), p-Atg13, Beclin-1, FAK family kinase-interacting protein of 200 kDa (FIP200), activating molecule in BECN1-regulated autophagy protein 1 (AMBKA1), and microtubule-associated protein 1 light chain 3Ⅱ/Ⅰ(LC3Ⅱ/Ⅰ) were up-regulated (P<0.05, P<0.01). p62 protein expression was down-regulated (P<0.01). Compared with the model group, the four items of liver fibrosis in the high-dose, medium-dose, and low-dose GDFMD groups and the penicillamine group were significantly improve (P<0.01), and the pathological conditions were improved. The expression of HSC activation-related indicators including α-SMA and Col Ⅰ, as well as α-SMA mRNA and Col Ⅰ mRNA was down-regulated (P<0.05, P<0.01), and the expression of miR-29b-3p was up-regulated (P<0.01). ULK1, p-ULK1, Atg13, p-Atg13, Beclin-1, FIP200, AMBKA1, and LC3Ⅱ/Ⅰ were down-regulated (P<0.05, P<0.01), and p62 protein expression was up-regulated (P<0.01). The prediction software predicted that there was a binding site between miR-29b-3p and ULK1. The dual-luciferase reporter gene detection method indicated that the luciferase activity of the ULK1-WT plasmid-transfected cell group was reduced when miR-29b-3p mimics were co-cultured (P<0.01). ConclusionGDFMD can regulate ULK1-mediated autophagy by up-regulating miR-29b-3p and further exert its anti-hepatic fibrosis effect in Wilson's disease.
3.Tongmai Kaiqiao Pills Treat Vascular Dementia in Rats by Regulating Mitochondrial Autophagy via HIF-1α/BNIP3 Signaling Pathway
Huimin DING ; Yanjie LI ; Hewei QIN ; Chenyuan HAO ; Nannan ZHAO ; Zhenhua XU ; Mengyan SUN
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(21):52-60
ObjectiveTo observe the effects of Tongmai Kaiqiao pills on the hypoxia-inducible factor-1α (HIF-1α)/adenovirus E1B 19 kD-interacting protein 3 (BNIP3) signaling pathway and mitochondrial autophagy in the hippocampus of the rat model of vascular dementia (VD). MethodNinety male SD rats underwent adaptive feeding for one week before the study. Ten rats were randomly assigned to the sham group, where the common carotid artery was isolated without ligation. The remaining rats were subjected to sequential ligation of the common carotid artery for the modeling of VD. The successfully modeled rats were randomly assigned into the following groups: model, high-, medium-, and low-dose (27.6, 13.8, 6.9 g·kg-1, respectively) Tongmai Kaiqiao pills, donepezil hydrochloride (0.45 mg·kg-1), and combination (27.6 g·kg-1 Tongmai Kaiqiao pills + 2.5 mg·kg-1 HIF-1α inhibitor YC-1) groups. After 4 weeks of treatment, samples were collected. Nissl staining and hematoxylin-eosin staining were performed to observe the loss of neurons and pathological changes, respectively, in the hippocampal region. Western blot was employed to determine the protein levels of HIF-1α, BNIP3, Beclin-1, and microtubule-associated protein 1 light chain 3B (LC3B) in the hippocampal tissue. Transmission electron microscopy was used to observe the mitochondrial ultrastructure and the number of autophagosomes in the hippocampal tissue. Immunofluorescence was employed to observe the fluorescence intensity of HIF-1α, BNIP3, and LC3B in the hippocampal tissue. ResultCompared with the sham group, the model group showed prolonged escape latency (P<0.01), decreased number of platform crossings (P<0.01), reduced and disarranged neuronal layers in the hippocampal region, decreased number of Nissl bodies, disrupted mitochondrial cristae, damaged mitochondrial double-membrane structures, increased number of autophagosomes, upregulated expression of HIF-1α, BNIP3, beclin1, and LC3B (P<0.05, P<0.01), and enhanced fluorescence intensity of HIF-1α, BNIP3, and LC3B (P<0.05, P<0.01). Compared with the model group, Tongmai Kaiqiao pills and donepezil hydrochloride shortened the searching time for the platform (P<0.01) and increased the number of platform crossings (P<0.01). Moreover, the drugs increased the number of neurons with normal morphology and orderly arrangement and the number of Nissl bodies, alleviated the damage, increased the number of autophagosomes, upregulated the expression of HIF-1α, BNIP3, Beclin1, and LC3B (P<0.05, P<0.01), and enhanced the fluorescence intensity of HIF-1α, BNIP3, and LC3B (P<0.05, P<0.01). Compared with high-dose Tongmai Kaiqiao pills, the combination group prolonged the escape latency (P<0.01), reduced the number of crossing platforms (P<0.01), decreased the number of hippocampal neurons, aggravated the damage, decreased the number of Nissl bodies and autophagosomes, downregulated the expression of HIF-1α, BNIP3, beclin1, and LC3B (P<0.01), and decreased the fluorescence intensity of HIF-1α, BNIP3, and LC3B (P<0.01). ConclusionTongmai Kaiqiao pills may activate the HIF-1α/BNIP3 signaling pathway to promote the occurrence of mitochondrial autophagy, clear damaged mitochondria, provide energy for healthy cells, reduce neuronal cell death, and restore the brain function, thereby reducing ischemic damage to the hippocampal tissue, improving learning and memory abilities, and exerting therapeutic effects on VD in rats.
4.Methodology for Developing Patient Guideline (3):Reporting Frameworks and Presentation
Lijiao YAN ; Ning LIANG ; Haili ZHANG ; Nannan SHI ; Ziyu TIAN ; Ruixiang WANG ; Xiaojia NI ; Yufang HAO ; Wei CHEN ; Yingfeng ZHOU ; Dan YANG ; Shuyu YANG ; Yujing ZHANG ; Ziteng HU ; Jianping LIU
Journal of Traditional Chinese Medicine 2024;65(22):2304-2309
Standardized reporting is a crucial factor affecting the use of patient guidelines (PGs), particularly in the reporting and presentation of recommendations. This paper introduced the current status of PG reporting, including the research on PG content and presentation formats, and provided comprehensive recommendations for PG reporting from aspects such as overall framework, recommendations, presentation format, and readability. First, the presentation of PG recommendations should include clearly defined clinical questions, recommendations and their rationale, and guidance on how patients should implement the interventions; for specific content in the PG, such as level of evidence, level of recommendation, it is recommended to explain in text the reasons for giving different levels of recommendation, i.e., to present the logic behind giving the level of recommendation to the patient; additional information needed in the recommendation framework should be supplemented by tracing references or authoritative textbooks and literature that support the recommendations. Subsequently, the PG text should be written based on the Reporting Checklist for Public Versions of Guidelines (RIGHT-PVG) reporting framework. Finally, to enhance readability and comprehension, it is recommended to refer to the Patient Education Materials Assessment Tool (PEMAT) for translating PG content. To enhance the readability of PGs, it is suggested to present the PG content in a persona-lized and layered manner.
5.Methodology for Developing Patient Guideline(1):The Concept of Patient Guideline
Lijiao YAN ; Ning LIANG ; Ziyu TIAN ; Nannan SHI ; Sihong YANG ; Yufang HAO ; Wei CHEN ; Xiaojia NI ; Yingfeng ZHOU ; Ruixiang WANG ; Zeyu YU ; Shuyu YANG ; Yujing ZHANG ; Ziteng HU ; Jianping LIU
Journal of Traditional Chinese Medicine 2024;65(20):2086-2091
Since the concept of patient versions of guidelines (PVGs) was introduced into China, several PVGs have been published in China, but we found that there is a big difference between the concept of PVG at home and abroad, and the reason for this difference has not been reasonably explained, which has led to ambiguity and even misapplication of the PVG concept by guideline developers. By analyzing the background and purpose of PVGs, and the understanding of the PVG concept by domestic scholars, we proposed the term patient guidelines (PGs). This refers to guidelines developed under the principles of evidence-based medicine, centered on health issues that concern patients, and based on the best available evidence, intended for patient use. Except for the general attribute of providing information or education, which is typical of common health education materials, PGs also provide recommendations and assist in decision-making, so PGs include both the patient versions of guidelines (PVG) as defined by the Guidelines International Network (GIN) and "patient-directed guidelines", i.e. clinical practice guidelines resulting from the adaptation or reformulation of recommendations through clinical practice guidelines.
6.Methodology for Developing Patient Guideline (2):Process and Methodology
Lijiao YAN ; Ning LIANG ; Nannan SHI ; Sihong YANG ; Ziyu TIAN ; Dan YANG ; Xiaojia NI ; Yufang HAO ; Wei CHEN ; Ruixiang WANG ; Yingfeng ZHOU ; Shibing LIANG ; Shuyu YANG ; Yujing ZHANG ; Ziteng HU ; Jianping LIU
Journal of Traditional Chinese Medicine 2024;65(21):2194-2198
At present, the process and methodology of patient guidelines (PGs) development varies greatly and lacks systematic and standardised guidance. In addition to the interviews with PG developers, we have sorted out the relevant methodology for the adaptation and development of existing clinical practice guideline recommendations and facilitated expert deliberations to achieve a consensus, so as to finally put forward a proposal for guidance on the process and methodology for the development of PGs. The development of PGs can be divided into the preparation stage, the construction stage, and the completion stage in general, but the specific steps vary according to the different modes of development of PGs. The development process of Model 1 is basically the same as the patient version of the guideline development process provided by the International Guidelines Network, i.e., team formation, screening of recommendations, guideline drafing, user testing and feedback, approval and dissemination. The developer should also first determine the need for and scope of translating the clinical practice guideline into a patient version during the preparation phase. Model 2 adds user experience and feedback to the conventional clinical practice guideline development process (forming a team, determining the scope of the PG, searching, evaluating and integrating evidence, forming recommendations, writing the guideline, and expert review). Based on the different models, we sort out the process and methods of PG development and introduce the specific methods of PG development, including how to identify the clinical problem and how to form recommendations based on the existing clinical practice guidelines, with a view to providing reference for guideline developers and related researchers.
7.Expert consensus on surgical treatment of oropharyngeal cancer
China Anti-Cancer Association Head and Neck Oncology Committee ; China Anti-Cancer Association Holistic Integrative Oral Cancer on Preventing and Screen-ing Committee ; Min RUAN ; Nannan HAN ; Changming AN ; Chao CHEN ; Chuanjun CHEN ; Minjun DONG ; Wei HAN ; Jinsong HOU ; Jun HOU ; Zhiquan HUANG ; Chao LI ; Siyi LI ; Bing LIU ; Fayu LIU ; Xiaozhi LV ; Zheng-Hua LV ; Guoxin REN ; Xiaofeng SHAN ; Zhengjun SHANG ; Shuyang SUN ; Tong JI ; Chuanzheng SUN ; Guowen SUN ; Hao TIAN ; Yuanyin WANG ; Yueping WANG ; Shuxin WEN ; Wei WU ; Jinhai YE ; Di YU ; Chunye ZHANG ; Kai ZHANG ; Ming ZHANG ; Sheng ZHANG ; Jiawei ZHENG ; Xuan ZHOU ; Yu ZHOU ; Guopei ZHU ; Ling ZHU ; Susheng MIAO ; Yue HE ; Jugao FANG ; Chenping ZHANG ; Zhiyuan ZHANG
Journal of Prevention and Treatment for Stomatological Diseases 2024;32(11):821-833
With the increasing proportion of human papilloma virus(HPV)infection in the pathogenic factors of oro-pharyngeal cancer,a series of changes have occurred in the surgical treatment.While the treatment mode has been im-proved,there are still many problems,including the inconsistency between diagnosis and treatment modes,the lack of popularization of reconstruction technology,the imperfect post-treatment rehabilitation system,and the lack of effective preventive measures.Especially in terms of treatment mode for early oropharyngeal cancer,there is no unified conclu-sion whether it is surgery alone or radiotherapy alone,and whether robotic minimally invasive surgery has better func-tional protection than radiotherapy.For advanced oropharyngeal cancer,there is greater controversy over the treatment mode.It is still unclear whether to adopt a non-surgical treatment mode of synchronous chemoradiotherapy or induction chemotherapy combined with synchronous chemoradiotherapy,or a treatment mode of surgery combined with postopera-tive chemoradiotherapy.In order to standardize the surgical treatment of oropharyngeal cancer in China and clarify the indications for surgical treatment of oropharyngeal cancer,this expert consensus,based on the characteristics and treat-ment status of oropharyngeal cancer in China and combined with the international latest theories and practices,forms consensus opinions in multiple aspects of preoperative evaluation,surgical indication determination,primary tumor re-section,neck lymph node dissection,postoperative defect repair,postoperative complication management prognosis and follow-up of oropharyngeal cancer patients.The key points include:① Before the treatment of oropharyngeal cancer,the expression of P16 protein should be detected to clarify HPV status;② Perform enhanced magnetic resonance imaging of the maxillofacial region before surgery to evaluate the invasion of oropharyngeal cancer and guide precise surgical resec-tion of oropharyngeal cancer.Evaluating mouth opening and airway status is crucial for surgical approach decisions and postoperative risk prediction;③ For oropharyngeal cancer patients who have to undergo major surgery and cannot eat for one to two months,it is recommended to undergo percutaneous endoscopic gastrostomy before surgery to effectively improve their nutritional intake during treatment;④ Early-stage oropharyngeal cancer patients may opt for either sur-gery alone or radiation therapy alone.For intermediate and advanced stages,HPV-related oropharyngeal cancer general-ly prioritizes radiation therapy,with concurrent chemotherapy considered based on tumor staging.Surgical treatment is recommended as the first choice for HPV unrelated oropharyngeal squamous cell carcinoma(including primary and re-current)and recurrent HPV related oropharyngeal squamous cell carcinoma after radiotherapy and chemotherapy;⑤ For primary exogenous T1-2 oropharyngeal cancer,direct surgery through the oral approach or da Vinci robotic sur-gery is preferred.For T3-4 patients with advanced oropharyngeal cancer,it is recommended to use temporary mandibu-lectomy approach and lateral pharyngotomy approach for surgery as appropriate;⑥ For cT1-2N0 oropharyngeal cancer patients with tumor invasion depth>3 mm and cT3-4N0 HPV unrelated oropharyngeal cancer patients,selective neck dissection of levels ⅠB to Ⅳ is recommended.For cN+HPV unrelated oropharyngeal cancer patients,therapeutic neck dissection in regions Ⅰ-Ⅴ is advised;⑦ If PET-CT scan at 12 or more weeks after completion of radiation shows intense FDG uptake in any node,or imaging suggests continuous enlargement of lymph nodes,the patient should undergo neck dissection;⑧ For patients with suspected extracapsular invasion preoperatively,lymph node dissection should include removal of surrounding muscle and adipose connective tissue;⑨ The reconstruction of oropharyngeal cancer defects should follow the principle of reconstruction steps,with priority given to adjacent flaps,followed by distal pedicled flaps,and finally free flaps.The anterolateral thigh flap with abundant tissue can be used as the preferred flap for large-scale postoperative defects.
8.Evaluation of reaction inhibition among military university students by multitasking operation based on Go/No-Go paradigm
Qian ZHANG ; Kejia WU ; Hongqi ZHAO ; Shuo FAN ; Nannan JIANG ; Chuanrui YANG ; Lulu TANG ; Hao YU
Academic Journal of Naval Medical University 2024;45(9):1185-1189
Objective To explore the characteristics of response inhibition of military university students during multitasking operation. Methods Repeated measures of ANOVA as well as distribution test were employed to explore how the performance of 127 military university students in Go/No-Go test was affected by simulated driving task. Results The test results of 127 participants showed that there was a interaction between the interference task and the Go trial proportion on the hit rate and false alarm rate,that is,no significant difference was observed between the 60% and 40% of trial proportion without interference task (both P>0.05),but the hit rate and false alarm rate in the 60% trial proportion condition were significantly higher than those in the 40% trial proportion condition under interference task (both P<0.01).In addition,significant main effects of interference task were observed on hit rate,false alarm rate,and discrimination index d' (all P<0.01),that is,the interference task reduced the hit rate and discrimination,but increased the false alarm rate.Moreover,individual differences existed in the discrimination index d' changes,and the participants were divided into easily disturbed group (n=23,18.11%),undisturbed group (n=20,15.75%),and intermediate group (n=84,66.14%) by adding or subtracting 1 standard deviation from the mean of the difference. Conclusion The interference tasks increase the psychological load of military university students during multitasking operation,and impair the response inhibition;and individual differences exist in response inhibition.
9.Cochlear Hypoplasia with Partial Cochlear Basal Turn
Kun ZHAO ; Le WANG ; Shaojuan HAO ; Nannan WEI ; Fanglei YE
Journal of Audiology and Speech Pathology 2024;32(3):221-227
Objective To study a distinct type of cochlear malformation,differentiated by its radiological feature,from the current Sennaroglu's classification criteria along with its clinical manifestations.Methods By analyzing the radio-logical findings from high-resolution CT(HRCT)of the temporal bone and 3D-dimensional magnetic resonance imaging(3D-MRI)of the inner ear in 11 cases(13 ears)with special cochlear malformations,we summarized the characteristics of this type of cochlear deformity.Results ① The radiological features of this type of cochlear malformation showed that only a part of the cochlear basal turn originated ventrally from the vestibule,with no or only partial inward turning.There were no upper,middle,or apical turns(cochlea with less than 0.5 turns),and the modiolus and interscalar septa were absent.On HRCT axial images,there was no connection observed between the cochlea and the internal auditory canal(IAC).MRI results consistently showed a cochlear nerve deficiency(CND),with audiometric findings indicating complete hearing loss.Most cases were accompanied by abnormally developed vestibules and malformed semicircular canals,and the cochlea on the opposite side often had severe malformations as well.② Based on the imaging characteristics,this type of cochlear malfor-mation,with only partial development of the basal turn(cochlea with less than 0.5 turns),was categorized as cochlear hy-poplasia(CH).We provisionally designated it as cochlear hypoplasia type X(CH-X).Conclusion Cochlear hypoplasia(CH-X),characterized by cochlea with less than 0.5 turns,represents a severe type of inner ear malformation,accounting for approximately 2%of such deformities.Due to the malformed cochlea lacking a distinct bony cochlear nerve canal(BC-NC)and cochlear nerve(CN),the potential benefits of cochlear implant surgery may be relatively limited.
10.Optical genome mapping analysis of a Chinese pedigree with a rare chromosome 17 paracentric inversion insertion.
Hao WANG ; Yang YANG ; Nannan YANG ; Yan WANG ; Huawei LI ; Wensheng HU
Chinese Journal of Medical Genetics 2023;40(6):727-732
OBJECTIVE:
To carry out optical genome mapping (OGM) for a Chinese pedigree with a rare paracentric reverse insertion of chromosome 17.
METHODS:
A high-risk pregnant woman identified at the Prenatal Diagnosis Center of Hangzhou Women's Hospital in October 2021 and her family members were selected as the study subjects. Chromosome G banding analysis, fluorescence in situ hybridization (FISH), single nucleotide polymorphism array (SNP array) and OGM were applied to verify the balanced structural abnormality of chromosome 17 in the pedigree.
RESULTS:
Chromosomal karyotyping analysis and SNP array assay have identified a duplication of 17q23q25 in the fetus. Karyotyping analysis of the pregnant woman showed that the structure of chromosome 17 was abnormal, whilst SNP array has detected no abnormality. OGM revealed that the woman has carried a paracentric reverse insertion, which was confirmed by FISH. The karyotype of her husband was normal.
CONCLUSION
The duplication of 17q23q25 in the fetus has derived from a paracentric reverse insertion of chromosome 17 in its mother. OGM has the advantage for delineating balanced chromosome structural abnormalities.
Pregnancy
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Humans
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Female
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Pedigree
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In Situ Hybridization, Fluorescence
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Chromosomes, Human, Pair 17/genetics*
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East Asian People
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Chromosome Aberrations
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Prenatal Diagnosis
;
Chromosome Mapping
;
Chromosome Inversion


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