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Huang Y, Liu J, Lv C, Sun C, Meng M, Lowe S, Yu Y. Integrative effects of transcutaneous auricular vagus nerve stimulation on esophageal motility and pharyngeal symptoms via vagal mechanisms in patients with laryngopharyngeal reflux disease. Front Neurosci 2024; 18:1287809. [PMID: 38516311 PMCID: PMC10954818 DOI: 10.3389/fnins.2024.1287809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 02/28/2024] [Indexed: 03/23/2024] Open
Abstract
Background and aim Laryngopharyngeal reflux disease (LPRD) is primarily characterized by discomfort in the pharynx and has limited treatment options. This research aimed to assess the efficacy of transcutaneous auricular vagus nerve stimulation (tVNS) in patients with LPRD and delve into the potential underlying mechanisms. Methods A total of 44 participants, diagnosed with LPRD were divided into two groups randomly. Twice-daily stimulation was delivered for 2 weeks for patients in experimental group, with stimulation ranging from 1.0 mA to 1.5 mA (n = 22), while the control group underwent sham tVNS (n = 22) with the same stimulation parameters and different anatomical location. The severity of symptoms and levels of anxiety and depression were monitored using questionnaires. High-resolution esophageal manometry data were collected, and the patients' autonomic function was assessed through heart rate variability analysis. Results There was a positive correlation between reflux symptom index (RSI) scores and low frequency/high frequency (LF/HF) ratio (r = 0.619; p < 0.001), Hamilton anxiety scale (HAMA) scores (r = 0.623; p < 0.001), and Hamilton depression scale (HAMD) scores (r = 0.593; p < 0.001). Compared to the pre-tVNS phase, RSI (p < 0.001), HAMA (p < 0.001), and HAMD (p < 0.001) scores were significantly reduced after 2 weeks of treatment. Additionally, the resting pressure of the upper esophageal sphincter (UESP; p < 0.05) and lower esophageal sphincter (LESP; p < 0.05) showed significant enhancement. Notably, tVNS led to an increase in root mean square of successive differences (RMSSD; p < 0.05) and high frequency (HF; p < 0.05) within heart rate variability compared to the pre-treatment baseline. Compared to the control group, RSI (p < 0.001), HAMA (p < 0.001), and HAMD (p < 0.001) scores in tVNS group were significantly lower at the end of treatment. Similarly, the resting pressure of UESP (p < 0.05) and LESP (p < 0.05) in tVNS group were significantly higher than that of control group. Notably, RMSSD (p < 0.05) and HF (p < 0.05) in tVNS group were significantly higher than that of control group. Conclusion This study demonstrated that tVNS as a therapeutic approach is effective in alleviating LPRD symptoms. Furthermore, it suggests that improvements in esophageal motility could be associated with vagus nerve-dependent mechanisms.
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Affiliation(s)
- Yizhou Huang
- Department of Gastroenterology, The PLA Navy Anqing Hospital, Anqing, Anhui, China
| | - Jie Liu
- Department of Gastroenterology, Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, Anhui, China
| | - Chaolan Lv
- Department of Gastroenterology, Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, Anhui, China
| | - Chenyu Sun
- Department of General Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Muzi Meng
- Bronxcare Health System, New York, NY, United States
| | - Scott Lowe
- College of Osteopathic Medicine, Kansas City University, Kansas City, MO, United States
| | - Yue Yu
- Department of Gastroenterology, Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, Anhui, China
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Meng M, Saini J, Fan D, Singh A, Farkas DT. Use of Indocyanine Green to Detect Intraoperative Staple-Line Leaks in Robotic Bariatric Surgery: An Observational Cohort Study. Cureus 2024; 16:e56991. [PMID: 38681259 PMCID: PMC11045299 DOI: 10.7759/cureus.56991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/26/2024] [Indexed: 05/01/2024] Open
Abstract
Background Bariatric surgeries aid weight loss in patients with morbid obesity, yet staple-line leaks pose safety concerns. Multiple methods are used to help identify these links. Intraluminal indocyanine green (ICG) has been shown to be useful in other applications, and its use in robotic bariatric surgeries is underexplored. Objective The primary objective of this research project was to demonstrate the usage of intraluminal ICG in detecting staple-line leaks during robotic sleeve gastrectomy and robotic gastric bypass. Settings The research was conducted at Bronxcare Health System between June 2022 and June 2023. Methods We studied 150 consecutive participants undergoing robotic sleeve gastrectomy or robotic gastric bypass. Intraluminal ICG was used in each case in order to identify leaks. Data on comorbidities, detected intraoperative leaks, and detected postoperative leaks were collected. Results Out of the 150 patients who underwent robotic bariatric surgeries (139 for sleeve gastrectomy and 11 for gastric bypass), four cases (two for each procedure) were identified with intraoperative leaks using ICG, resulting in an overall 2.66% incidence rate. In those four patients with intraoperative leaks, reinforcing sutures and a drain were placed. Following the surgeries, none of the patients had radiologic or clinical leaks identified. Conclusions Intraluminal ICG presents a novel approach for detecting staple-line leaks in robotic bariatric surgery. Future studies can be done to look at a larger series of patients and compare leak detection rates between ICG and other methods.
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Affiliation(s)
- Muzi Meng
- School of Medicine, American University of the Carribean, Cupecoy, SXM
- General Surgery, BronxCare Health System, Bronx, USA
| | | | - David Fan
- Surgery, BronxCare Health System, Bronx, USA
| | - Ajit Singh
- General Surgery, BronxCare Health System, Bronx, USA
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Chen B, Han Y, Sheng S, Deng J, Vasquez E, Yau V, Meng M, Sun C, Wang T, Wang Y, Sheng M, Wu T, Wang X, Liu Y, Lin N, Zhang L, Shao W. An angiogenesis-associated gene-based signature predicting prognosis and immunotherapy efficacy of head and neck squamous cell carcinoma patients. J Cancer Res Clin Oncol 2024; 150:91. [PMID: 38347320 PMCID: PMC10861726 DOI: 10.1007/s00432-024-05606-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 01/02/2024] [Indexed: 02/15/2024]
Abstract
OBJECTIVES To develop a model that can assist in the diagnosis and prediction of prognosis for head and neck squamous cell carcinoma (HNSCC). MATERIALS AND METHODS Data from TCGA and GEO databases were used to generate normalized gene expression data. Consensus Cluster Plus was used for cluster analysis and the relationship between angiogenesis-associated gene (AAG) expression patterns, clinical characteristics and survival was examined. Support vector machine (SVM) and least absolute shrinkage and selection operator (LASSO) analyzes and multiple logistic regression analyzes were performed to determine the diagnostic model, and a prognostic nomogram was constructed using univariate and multivariate Cox regression analyses. ESTIMATE, XCELL, TIMER, QUANTISEQ, MCPCOUNTER, EPIC, CIBERSORT-ABS, CIBERSORT algorithms were used to assess the immune microenvironment of HNSCC patients. In addition, gene set enrichment analysis, treatment sensitivity analysis, and AAGs mutation studies were performed. Finally, we also performed immunohistochemistry (IHC) staining in the tissue samples. RESULTS We classified HNSCC patients into subtypes based on differences in AAG expression from TCGA and GEO databases. There are differences in clinical features, TME, and immune-related gene expression between two subgroups. We constructed a HNSCC diagnostic model based on nine AAGs, which has good sensitivity and specificity. After further screening, we constructed a prognostic risk signature for HNSCC based on six AAGs. The constructed risk score had a good independent prognostic significance, and it was further constructed into a prognostic nomogram together with age and stage. Different prognostic risk groups have differences in immune microenvironment, drug sensitivity, gene enrichment and gene mutation. CONCLUSION We have constructed a diagnostic and prognostic model for HNSCC based on AAG, which has good performance. The constructed prognostic risk score is closely related to tumor immune microenvironment and immunotherapy response.
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Affiliation(s)
- Bangjie Chen
- College & Hospital of Stomatology, Key Lab. of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei, China
- The First Affiliated Hospital (First Clinical Medical College), Anhui Medical University, Hefei, China
| | - Yanxun Han
- The First Affiliated Hospital (First Clinical Medical College), Anhui Medical University, Hefei, China
| | - Shuyan Sheng
- The First Affiliated Hospital (First Clinical Medical College), Anhui Medical University, Hefei, China
| | - Jianyi Deng
- The First Affiliated Hospital (First Clinical Medical College), Anhui Medical University, Hefei, China
| | | | - Vicky Yau
- Division of Oral and Maxillofacial Surgery, NewYork Presbyterian (Columbia Irving Medical Center), New York, USA
| | - Muzi Meng
- UK Program Site, American University of the Caribbean School of Medicine, Preston, UK
- Bronxcare Health System, New York, USA
| | - Chenyu Sun
- The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Tao Wang
- The Affiliated Chuzhou Hospital of Anhui Medical University, The First People's Hospital of Chuzhou, Chuzhou, China
| | - Yu Wang
- The Affiliated Chuzhou Hospital of Anhui Medical University, The First People's Hospital of Chuzhou, Chuzhou, China
| | - Mengfei Sheng
- College & Hospital of Stomatology, Key Lab. of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei, China
- Department of Microbiology and Parasitology (Anhui Provincial Laboratory of Pathogen Biology), School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Tiangang Wu
- College & Hospital of Stomatology, Key Lab. of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei, China
| | - Xinyi Wang
- The First Affiliated Hospital (First Clinical Medical College), Anhui Medical University, Hefei, China
| | - Yuchen Liu
- The First Affiliated Hospital (First Clinical Medical College), Anhui Medical University, Hefei, China
| | - Ning Lin
- The Affiliated Chuzhou Hospital of Anhui Medical University, The First People's Hospital of Chuzhou, Chuzhou, China.
| | - Lei Zhang
- College & Hospital of Stomatology, Key Lab. of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei, China.
| | - Wei Shao
- College & Hospital of Stomatology, Key Lab. of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei, China.
- Department of Microbiology and Parasitology (Anhui Provincial Laboratory of Pathogen Biology), School of Basic Medical Sciences, Anhui Medical University, Hefei, China.
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Meng M, Riera Gonzalez C, Teklu Y, Mosquera Zavaleta J, Singh A. The Efficacy of Intraoperative Esophagogastroduodenoscopy in Localizing Retroperitoneal Bowel Injury: A Case Report. Cureus 2024; 16:e54057. [PMID: 38348203 PMCID: PMC10860371 DOI: 10.7759/cureus.54057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/12/2024] [Indexed: 02/15/2024] Open
Abstract
The efficacy of intraoperative esophagogastroduodenoscopy (EGD) in visualizing a patient's small bowel interior to detect injuries or lesions, or conduct a leak test post-bowel anastomosis, makes it a preferred option among surgeons. However, it is not always available, can carry a risk of morbidity and mortality, or can prolong operative time if not performed by a proficient team. A 21-year-old male patient came to the emergency department with four gunshot wounds to his abdomen, with two on either side of the abdomen. Exploratory laparotomy was performed and through and through injuries were identified in the small bowel and at the junction of the third/fourth portion of the duodenum. It was challenging to gather the patient's past medical history, particularly gastrointestinal bleeding history, due to the underlying medical condition. However, the patient had experienced a retroperitoneal bowel injury in the setting of duodenal hematoma that was not immediately identified at first glance. In this context, intraoperative endoscopy could be a significant adjunct to detect retroperitoneal bowel injury if rapidly available and in a controlled scenario. Moreover, the advantages of intraoperative EGD increase with positive collaboration between a general surgeon and a gastroenterologist.
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Affiliation(s)
- Muzi Meng
- School of Medicine, American University of the Caribbean, Cupecoy, SXM
- General Surgery, BronxCare Health System, Bronx, USA
| | | | - Yonas Teklu
- General Surgery, BronxCare Health System, Bronx, USA
| | | | - Ajit Singh
- General Surgery, BronxCare Health System, Bronx, USA
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Gao J, Feng L, Wu B, Xia W, Xie P, Ma S, Liu H, Meng M, Sun Y. The association between varicella zoster virus and dementia: a systematic review and meta-analysis of observational studies. Neurol Sci 2024; 45:27-36. [PMID: 37639023 DOI: 10.1007/s10072-023-07038-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 08/23/2023] [Indexed: 08/29/2023]
Abstract
PURPOSE The relationship between varicella zoster virus (VZV) infection and the risk of dementia has not been previously studied specifically. Therefore, this study sought to determine the relationship between studying VZV infection and dementia occurring in the general population by conducting an extensive meta-analysis of published cases. METHOD A systematic literature search was conducted in seven online databases by October 31, 2022. Heterogeneity was tested by the I2 index. Pooled HR and 95% CI were used to estimate the effect of VZV infection on dementia. Sensitivity analyses and publication bias were also performed. RESULT Nine studies involving 3,326,673 subjects were included. VZV infection was associated with an increased risk of dementia (HR = 1.11, 95% CI: 1.02-1.21). The risk of dementia was reduced in those who received antiviral therapy compared to those who did not (HR = 0.84, 95% CI: 0.71-0.99). In addition, VZV infection was found to be associated with an increased risk of developing dementia in the pooled results of the moderate quality study (HR = 1.81,95% CI: 1.27-2.59), and this association persisted when subgroup analyses were performed based on region (Asia: HR = 1.18,95% CI: 1.04-1.33). CONCLUSIONS Our results suggest that VZV infection might increase the risk of developing dementia, but there is no clear mechanism about the true relationship, and since there is no effective treatment for dementia, and our results suggest that some populations can benefit from antiviral therapy, it is at least arguable that patients who develop VZV infection should be treated with appropriate antiviral medications.
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Affiliation(s)
- Juan Gao
- Department of Epidemiology and Health Statistics, School of Public, Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, People's Republic of China
| | - Linya Feng
- Department of Epidemiology and Health Statistics, School of Public, Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, People's Republic of China
| | - Birong Wu
- Department of Epidemiology and Health Statistics, School of Public, Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, People's Republic of China
| | - Weihang Xia
- Department of Epidemiology and Health Statistics, School of Public, Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, People's Republic of China
| | - Peng Xie
- Department of Epidemiology and Health Statistics, School of Public, Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, People's Republic of China
| | - Shaodi Ma
- Department of Epidemiology and Health Statistics, School of Public, Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, People's Republic of China
| | - Haixia Liu
- Department of Epidemiology and Health Statistics, School of Public, Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, People's Republic of China
| | - Muzi Meng
- UK Program Site, American University of the Caribbean School of Medicine, Vernon Building Room 64, Sizer St, Preston, PR1 1JQ, UK
- Bronxcare Health System, 1650 Grand Concourse, The Bronx, NY, 10457, USA
| | - Yehuan Sun
- Department of Epidemiology and Health Statistics, School of Public, Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, People's Republic of China.
- Chaohu Hospital, Anhui Medical University, No. 64 Chaohubei Road, Hefei, 238000, Anhui, China.
- Center for Evidence-Based Practice, Anhui Medical University, Anhui, People's Republic of China.
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Ma S, Liu H, Sun C, Meng M, Qu G, Jiang Y, Wu B, Gao J, Feng L, Xie P, Xia W, Sun Y. Effect of physical activity on incidence and mortality in patients with gastric cancer: evidence from real-world studies. Cancer Causes Control 2023; 34:1095-1111. [PMID: 37491662 DOI: 10.1007/s10552-023-01763-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 07/17/2023] [Indexed: 07/27/2023]
Abstract
PURPOSE Physical activity (PA) has been suggested to reduce the risk of cancer. However, previous studies have been inconsistent regarding the relationship between PA and the risk of developing gastric cancer (GC). The purpose of this study was to evaluate the impact of PA on the incidence and mortality risk of GC through a meta-analysis, as well as investigate potential dose-response relationships. METHODS A systematic literature search was conducted in 10 electronic databases and 4 registries. The combined relative risks (RRs) were calculated using a random-effects model with 95% confidence interval (CIs) to assess the effect of PA on the risk of GC. Relevant subgroup analyses and sensitivity analyses were performed. RESULTS The results showed that PA correlated with lower incidence of GC (RR: 0.83, 95% CI: 0.77-0.90), decreased risk of GC mortality (RR: 0.76, 95% CI: 0.66-0.89). The results of the subgroup analysis showed that PA was associated with reduced incidence of GC across gender, different regions, study designs, different sites of GC and different types of PA. A linear relationship was found for frequency of PA. CONCLUSIONS This meta-analysis found that PA was associated with a reduced risk of GC incidence and mortality. The correlation between PA and GC occurrence was in a dose-response relationship.
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Affiliation(s)
- Shaodi Ma
- Department of Epidemiology and Health Statistics, School of Public Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, P.R. China
| | - Haixia Liu
- Department of Epidemiology and Health Statistics, School of Public Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, P.R. China
| | - Chenyu Sun
- Department of General Surgery, the Second Affiliated Hospital of Anhui Medical University, No. 678 Furong Road, Hefei, 230032, Anhui, P.R. China
| | - Muzi Meng
- UK Program Site, American University of the Caribbean School of Medicine, Vernon Building Room 64, Sizer St, Preston, PR1 1JQ, UK
- Bronxcare Health System, 1650 Grand Concourse, The Bronx, NY, 10457, USA
| | - Guangbo Qu
- Department of Epidemiology and Health Statistics, School of Public Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, P.R. China
| | - Yuemeng Jiang
- Department of Infectious Diseases, the First Affiliated Hospital of Anhui Medical University North District, No. 100 Huaihai Dadao, Hefei, 230032, Anhui, P.R. China
- Anhui Public Health Clinical Center, No. 100 Huaihai Dadao, Hefei, 230032, Anhui, P.R. China
| | - Birong Wu
- Department of Epidemiology and Health Statistics, School of Public Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, P.R. China
| | - Juan Gao
- Department of Epidemiology and Health Statistics, School of Public Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, P.R. China
| | - Linya Feng
- Department of Epidemiology and Health Statistics, School of Public Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, P.R. China
| | - Peng Xie
- Department of Epidemiology and Health Statistics, School of Public Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, P.R. China
| | - Weihang Xia
- Department of Epidemiology and Health Statistics, School of Public Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, P.R. China
| | - Yehuan Sun
- Department of Epidemiology and Health Statistics, School of Public Health Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, P.R. China.
- Chaohu Hospital, Anhui Medical University, No. 64 Chaohubei Road, Hefei, 238000, Anhui, China.
- Center for Evidence-Based Practice, Anhui Medical University, No. 81 Meishan Road, Hefei, 230032, Anhui, China.
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Meng M, Teklu Y, Parikh HR, Sathya Prakash G, Silletti J, Singh A. A Complicated Case of Strangulated Inguinal Hernia of the Sigmoid Colon With Secondary Ischemic-Compromise of Scrotal Tissue: A Multi-Disciplinary Surgical Approach. Cureus 2023; 15:e48510. [PMID: 38024026 PMCID: PMC10631566 DOI: 10.7759/cureus.48510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2023] [Indexed: 12/01/2023] Open
Abstract
Inguinal hernia is amongst the most common acute abdominal disease that presents in the Emergency Department (ED). Pathologically, it involves the displacement and herniation of abdominal, pelvic, or groin tissue through weaknesses in the abdominal wall. Many inguinal hernias are simple and asymptomatic, managed conservatively without the need for surgical intervention. However, under rare circumstances, hernias are susceptible to significant complications requiring emergent surgery. This report follows the case of a 61-year-old Hispanic-American male presenting to the ED with signs of a complex strangulated inguinal hernia and consequent infarction of the testis with Fournier's Gangrene. Clinical evaluation elucidated a one-week worsening abdominal pain, non-reducible painful inguinal hernia, nausea, vomiting, constipation, groin discoloration, dysuria, and a history of failed primary hernia repair during childhood. The patient underwent emergent surgery to excise ischemic-necrotic portions of the sigmoid colon, creation of end-colostomy, non-mesh repair of inguinal hernia, and right-sided complete orchiectomy with the removal of adjacent scrotal-Dartos tissues and spermatic cord due to Fournier's Gangrene. This report provides both a report for a potentially preventable consequence in one of the most common surgical presentations and a review of the multi-disciplinary expertise that is required in the surgical management of complex inguinal hernias.
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Affiliation(s)
- Muzi Meng
- School of Medicine, American University of the Carribean, Cupecoy, SXM
- General Surgery, BronxCare Health System, Bronx, USA
| | - Yonas Teklu
- General Surgery, BronxCare Health System, Bronx, USA
| | - Harsh R Parikh
- Department of Surgery, Regions Hospital, St. Paul, USA
- Department of Orthopedic Surgery, University of Minnesota School of Medicine, Minneapolis, USA
- General Surgery/Internal Medicine, BronxCare Health System, Bronx, USA
- School of Medicine, St. George's University, Grenada, GRD
| | | | | | - Ajit Singh
- General Surgery, BronxCare Health System, Bronx, USA
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Meng M, Riera CA, Mosquera J, Parikh HR, Singh A. Atypical diffuse large B-cell lymphoma, primary splenic lymphoma variant; a case report. Int J Surg Case Rep 2023; 111:108861. [PMID: 37769409 PMCID: PMC10539923 DOI: 10.1016/j.ijscr.2023.108861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 09/18/2023] [Accepted: 09/19/2023] [Indexed: 09/30/2023] Open
Abstract
INTRODUCTION AND IMPORTANCE Primary splenic lymphoma (PSL) is characterized by lymphoma involvement confined to the spleen and hilar lymph nodes, without evidence of liver involvement or other sites. This condition is extremely uncommon, accounting for approximately 1 % of non- Hodgkin lymphomas (NHLs) and <2 % of all lymphomas. Diffuse large B-cell lymphoma (DLBCL) is the most common histological subtype of both PSLs and all NHLs. DLBCL encompasses an aggressive heterogeneous entity with distinct morphological variants. CASE PRESENTATION A 68 year-old gentleman presented to the office with a 10-month history of vague left sided upper abdominal pain. Clinical examination revealed a tender left upper quadrant, evidenced with splenomegaly on radiological evaluation. The patient proceeded with a splenectomy with subsequent pathological and immunohistochemical analysis, confirming a final diagnosis of germinal center type DLBCL. CLINICAL DISCUSSION Primary splenic DLBCL is a rare variant of DLBCL, characterized by exclusive involvement of the spleen. It requires a comprehensive diagnostic evaluation to exclude lymphoma involvement in other organs and lymph nodes. Splenectomy followed by appropriate adjuvant therapy has been demonstrated as the definitive treatment strategy. This case report emphasizes the importance of considering primary splenic DLBCL as a differential diagnosis in patients presenting with splenomegaly and highlights the significance of multidisciplinary collaboration for accurate diagnosis and optimal management of this uncommon entity. CONCLUSION Primary Splenic DLBCL, an exceptionally rare B-Cell neoplasm variant, requires precise diagnosis due to its unique splenic involvement. Splenectomy's efficacy, adjuvant therapy, multidisciplinary collaboration, and ongoing research are crucial for optimal management.
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Affiliation(s)
- Muzi Meng
- General Surgery, BronxCare Health System, Bronx, NY, USA; School of Medicine, American University of the Caribbean, Cupecoy, St. Maarten, the Netherlands
| | - Cesar A Riera
- General Surgery, BronxCare Health System, Bronx, NY, USA.
| | - Jorge Mosquera
- General Surgery, BronxCare Health System, Bronx, NY, USA
| | - Harsh R Parikh
- General Surgery, BronxCare Health System, Bronx, NY, USA; School of Medicine, St. George's University, Grenada
| | - Ajit Singh
- General Surgery, BronxCare Health System, Bronx, NY, USA
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Ding P, Wu J, Wu H, Sun C, Meng M, Lowe S, Tian Y, Guo H, Meng L, Zhao Q. Comment on 'Hand grip strength-based cachexia index as a predictor of cancer cachexia and prognosis in patients with cancer' by Xie et al. J Cachexia Sarcopenia Muscle 2023; 14:2449-2451. [PMID: 37501640 PMCID: PMC10570068 DOI: 10.1002/jcsm.13298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/29/2023] Open
Affiliation(s)
- Ping'an Ding
- The Third Department of SurgeryThe Fourth Hospital of Hebei Medical UniversityShijiazhuangChina
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric CancerShijiazhuangChina
| | - Jiaxiang Wu
- The Third Department of SurgeryThe Fourth Hospital of Hebei Medical UniversityShijiazhuangChina
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric CancerShijiazhuangChina
| | - Haotian Wu
- The Third Department of SurgeryThe Fourth Hospital of Hebei Medical UniversityShijiazhuangChina
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric CancerShijiazhuangChina
| | - Chenyu Sun
- Department of Thyroid and Breast SurgeryThe Second Affiliated Hospital of Anhui Medical UniversityHefeiChina
- Department of General Surgerythe Second Affiliated Hospital of Anhui Medical UniversityHefeiChina
| | - Muzi Meng
- UK Program SiteAmerican University of the Caribbean School of MedicinePrestonUK
- Bronxcare Health SystemThe BronxNYUSA
| | - Scott Lowe
- College of Osteopathic MedicineKansas City UniversityKansas CityMOUSA
| | - Yuan Tian
- The Third Department of SurgeryThe Fourth Hospital of Hebei Medical UniversityShijiazhuangChina
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric CancerShijiazhuangChina
| | - Honghai Guo
- The Third Department of SurgeryThe Fourth Hospital of Hebei Medical UniversityShijiazhuangChina
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric CancerShijiazhuangChina
| | - Lingjiao Meng
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric CancerShijiazhuangChina
- Research Center of the Fourth Hospital of Hebei Medical UniversityShijiazhuangChina
| | - Qun Zhao
- The Third Department of SurgeryThe Fourth Hospital of Hebei Medical UniversityShijiazhuangChina
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric CancerShijiazhuangChina
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10
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Ding P, Wu H, Wu J, Sun C, Meng M, Yang P, Liu Y, Meng L, Zhao Q. Comment on: 'Triceps skinfold-albumin index significantly predicts the prognosis of cancer cachexia: A multicentre cohort study' by Yin et al. J Cachexia Sarcopenia Muscle 2023; 14:2446-2448. [PMID: 37550798 PMCID: PMC10570092 DOI: 10.1002/jcsm.13304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/09/2023] Open
Affiliation(s)
- Ping'an Ding
- The Third Department of SurgeryThe Fourth Hospital of Hebei Medical UniversityShijiazhuangChina
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric CancerShijiazhuangChina
| | - Haotian Wu
- The Third Department of SurgeryThe Fourth Hospital of Hebei Medical UniversityShijiazhuangChina
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric CancerShijiazhuangChina
| | - Jiaxiang Wu
- The Third Department of SurgeryThe Fourth Hospital of Hebei Medical UniversityShijiazhuangChina
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric CancerShijiazhuangChina
| | - Chenyu Sun
- Department of Thyroid and Breast SurgeryThe Second Affiliated Hospital of Anhui Medical UniversityHefeiChina
| | - Muzi Meng
- UK Program SiteAmerican University of the Caribbean School of MedicinePrestonUK
- Bronxcare Health SystemThe BronxNYUSA
| | - Peigang Yang
- The Third Department of SurgeryThe Fourth Hospital of Hebei Medical UniversityShijiazhuangChina
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric CancerShijiazhuangChina
| | - Yang Liu
- The Third Department of SurgeryThe Fourth Hospital of Hebei Medical UniversityShijiazhuangChina
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric CancerShijiazhuangChina
| | - Lingjiao Meng
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric CancerShijiazhuangChina
- Research Center of the Fourth Hospital of Hebei Medical UniversityShijiazhuangChina
| | - Qun Zhao
- The Third Department of SurgeryThe Fourth Hospital of Hebei Medical UniversityShijiazhuangChina
- Hebei Key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric CancerShijiazhuangChina
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11
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Sun C, Chen Y, Ma S, Liu M, Yau V, Kim NH, Kailas S, Lowe S, Bentley R, Chen S, Liu J, Meng M, Huang Y, Zhou Q, Wu Y. You are not lab rats at teaching hospitals: A systematic review of resident and fellow participation leads to improved colonoscopy. J Evid Based Med 2023; 16:332-341. [PMID: 37735811 DOI: 10.1111/jebm.12554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 09/12/2023] [Indexed: 09/23/2023]
Abstract
BACKGROUND Participation in colonoscopies is an essential aspect of endoscopic training. The purpose of this study was to explore the impact of fellow/trainee participation on colonoscopy outcomes. METHODS This meta-analysis was registered on the International Prospective Register of Systematic Reviews (PROSPERO). From database inception to July 2022, studies investigating fellow involvement and colonoscopy outcomes were searched across Cochrane library, PubMed, and other databases. The random-effects model was applied to generate more conservative estimates. Sensitive analysis was conducted to explore whether the result would depend on a particular study. Egger's test and Begg's test were used to estimate the potential for publication bias. RESULTS Seventeen studies including 30,062 participants were included. We found that fellow/trainee involvement enhanced the overall rates of adenoma detection and polyp detection (OR = 1.26, 95% CI = 1.14-1.40, p < 0.001; OR = 1.29, 95% CI = 1.02-1.63, p = 0.020, respectively). The mean number of adenoma/polyps per colonoscopy was also higher with fellow/trainee participation (MD = 0.12, 95% CI = 0.08-0.17, p < 0.001; MD = 0.15, 95% CI = 0.02-0.28, p = 0.020, respectively). CONCLUSION In addition to its educational purpose, fellow or trainee involvement is associated with beneficial effects on colonoscopy outcomes.
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Affiliation(s)
- Chenyu Sun
- Department of Thyroid and Breast Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
- Department of clinic medicine, University of IIIinois College of Medicine, Chicago, Illinois, United States
| | - Yue Chen
- Department of Clinical Medicine, School of the First Clinical Medicine, Anhui Medical University, Hefei, China
| | - Shaodi Ma
- Department of Epidemiology and Health Statistics, School of Public Health Anhui Medical University, Hefei, China
| | - Mengqing Liu
- Department of Clinical Medicine, School of the Chaohu Clinical Medicine, Anhui Medical University, Hefei, China
| | - Vicky Yau
- Department of Dentistry and Oral and Maxillofacial Surgery, Columbia University Irving Medical Center, New York, New York
| | - Na Hyun Kim
- Department of clinic medicine, University of IIIinois College of Medicine, Chicago, Illinois, United States
| | - Sujatha Kailas
- Department of clinic medicine, University of IIIinois College of Medicine, Chicago, Illinois, United States
| | - Scott Lowe
- College of Osteopathic Medicine, Kansas City University, Kansas City, Missouri
| | - Rachel Bentley
- College of Osteopathic Medicine, Kansas City University, Kansas City, Missouri
| | | | - Jie Liu
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Muzi Meng
- UK Program Site, American University of the Caribbean School of Medicine, Sint Maarten, UK
- Bronxcare Health System, The Bronx, New York
| | - Yuting Huang
- Department of Gastroenterology & Hepatology, Mayo Clinic Florida, Jacksonville, Florida
| | - Qin Zhou
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Yuyan Wu
- Department of Pediatrics, The first people's Hospital of Hefei, Hefei, China
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12
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Meng M, Hanssen D, Singh A. Radiation Enterocolitis Featuring the Perforation of the Sigmoid Colon, Small Bowel, and Entero-Colonic Fistula: A Case Report. Cureus 2023; 15:e43167. [PMID: 37560055 PMCID: PMC10409519 DOI: 10.7759/cureus.43167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/08/2023] [Indexed: 08/11/2023] Open
Abstract
Radiation enteritis poses a treatment challenge for patients undergoing or completing radiation therapy. A significant issue has been the patient's and surgeon's lack of awareness of the condition and the radiotherapy or associated surgical treatments. A 66-year-old female presented with acute onset of diffuse abdominal pain and peritonitis for one day, status post radiation therapy following a diagnosis of cervical cancer. A review of systems was positive for diffuse sweating, chills, and nausea. The patient was diagnosed with an entero-colonic fistula with mesenteric edema. An entero-colonic fistula due to radiation enterocolitis is a rare but important complication that can occur after radiation therapy for abdominal or pelvic malignancies. With any patient who has a history of abdominal or pelvic cancer and has received radiotherapy and shows up with acute abdomen, bowel perforation should be considered in the differential diagnosis with the possible management of acute complications.
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Affiliation(s)
- Muzi Meng
- School of Medicine, American University of the Caribbean, Miramar, USA
- General Surgery, BronxCare Health System, Bronx, USA
| | | | - Ajit Singh
- General Surgery, BronxCare Health System, Bronx, USA
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13
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Sun X, Zhang Q, Kadier K, Hu P, Liu X, Liu J, Yan Y, Sun C, Yau V, Lowe S, Meng M, Liu Z, Zhou M. Association between diabetes status and breast cancer in US adults: findings from the US National Health and Nutrition Examination Survey. Front Endocrinol (Lausanne) 2023; 14:1059303. [PMID: 37415670 PMCID: PMC10321597 DOI: 10.3389/fendo.2023.1059303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 05/16/2023] [Indexed: 07/08/2023] Open
Abstract
Objectives The aim of this study was to investigate the association between diabetes status and the risk of breast cancer among adult Americans, exploring the impact of BMI, age, and race on this relationship. Methods A cross-sectional analysis of 8,249 individuals from the National Health and Nutrition Examination Survey (NHANES) was conducted. Diabetes was categorized as type 2 diabetes and prediabetes, with both conditions diagnosed according to the ADA 2014 guidelines. The association between diabetes status and breast cancer risk was explored using multiple logistic regression analysis. Results Patients with diabetes had higher odds of breast cancer (OR: 1.51; 95% CI 1.00 to 2.28), Using the two-piecewise linear regression model, it was observed that there is a threshold effect in the risk of breast cancer occurrence at the age of 52 years. Specifically, the risk of breast cancer is relatively low before the age of 52 but increases significantly after this age. Conclusions This study identified a significant association between diabetes status and breast cancer risk among adult Americans. We also found a threshold effect in breast cancer occurrence at the age of 52. Age was significantly associated with breast cancer risk in both Non-Hispanic White and Non-Hispanic Black individuals. These findings underscore the importance of diabetes management, maintaining a healthy BMI, and age-related risk considerations in reducing breast cancer risk.
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Affiliation(s)
- Xingyu Sun
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
- Department of Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Qiangsong Zhang
- Emergency Department, East China Hospital affiliated to Fudan University, Shanghai, China
| | - Kaisaierjiang Kadier
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Ürümqi, China
| | - Pengcheng Hu
- Department of Ophthalmology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaozhu Liu
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jialing Liu
- Department of Phase I Clinical Trial Center, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yulu Yan
- Clinical Medical School, the Southwest Medical University, Luzhou, Sichuan, China
| | - Chenyu Sun
- Department of General Surgery, the Second Affiliated Hospital of Anhui Medical University, Hefei, China
- Department of Thyroid and Breast Surgery, the Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Vicky Yau
- Division of Oral and Maxillofacial Surgery, Columbia University Irving Medical Center, New York, NY, United States
| | - Scott Lowe
- College of Osteopathic Medicine, Kansas City University, Kansas City, MO, United States
| | - Muzi Meng
- UK Program Site, American University of the Caribbean School of Medicine, Preston, United Kingdom
- Bronxcare Health System, The Bronx, NY, United States
| | - Ziru Liu
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Meirong Zhou
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
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14
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Xie FH, Wu GH, Zhao X, Wan B, Yao R, Meng M, Liang L, Chen Q, Tang SJ. [Progress on health-related quality of life and its influencing factors in patients with tuberculosis sequelae]. Zhonghua Jie He He Hu Xi Za Zhi 2023; 46:614-618. [PMID: 37278179 DOI: 10.3760/cma.j.cn112147-20221117-00904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
With the emergence of new tuberculosis patients, the number of patients with tuberculosis sequelae is increasing, which not only increases the medical burden of tuberculosis sequelae year by year, but also affects the health-related quality of life (HRQOL) of patients. The HRQOL of patients with tuberculosis sequelae has gradually received attention, but there are few relevant studies. Studies have shown that HRQOL is related to various factors such as post-tuberculosis lung disease, adverse reaction to anti-tuberculosis drugs, decreased physical activity, psychological barriers, low economic status and marital status. This article reviewed the current situation of HRQOL in patients with sequelae of tuberculosis and its influencing factors, in order to provide a reference for improving the quality of life of patients with sequelae of tuberculosis.
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Affiliation(s)
- F H Xie
- The 2nd Tuberculosis Ward of Chengdu Public Health Clinical Medical Center, Chengdu 610061, China
| | - G H Wu
- The 2nd Tuberculosis Ward of Chengdu Public Health Clinical Medical Center, Chengdu 610061, China
| | - X Zhao
- Nursing Department of Chengdu Public Health Clinical Medical Center, Chengdu 610061, China
| | - B Wan
- Nursing Department of Chengdu Public Health Clinical Medical Center, Chengdu 610061, China
| | - R Yao
- The 2nd Tuberculosis Ward of Chengdu Public Health Clinical Medical Center, Chengdu 610061, China
| | - M Meng
- Nursing Department of the Eighth Medical Center of PLA General Hospital, Beijing 100091, China
| | - L Liang
- The 2nd Tuberculosis Ward of Chengdu Public Health Clinical Medical Center, Chengdu 610061, China
| | - Q Chen
- The 2nd Tuberculosis Ward of Chengdu Public Health Clinical Medical Center, Chengdu 610061, China
| | - S J Tang
- Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
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15
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Guo X, Zhao D, Meng J, Hu W, Wu B, Wang X, Su W, Meng M, Qu G, Sun Y. Association of a mixture of phthalates and phenols with frailty among middle-aged and older adults: A population-based cross-sectional study. Chemosphere 2023:139144. [PMID: 37302498 DOI: 10.1016/j.chemosphere.2023.139144] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 06/01/2023] [Accepted: 06/04/2023] [Indexed: 06/13/2023]
Abstract
BACKGROUND Frailty is a complex geriatric syndrome caused by degenerative changes in the body or various chronic diseases. The use of personal care and consumer products is associated with a wide range of health outcomes, but its relationship with frailty remains unknown. Therefore, our primary aim was to explore the potential links between exposure to phenols and phthalates, either separately or in combination, and frailty. METHODS The exposure levels of phthalates and phenols were evaluated through the measurement of metabolites in urine samples. Frailty state was assessed by a 36-item frailty index with values ≥ 0.25 indicating frailty. Weighted logistic regression was used to explore the relationship between individual chemical exposure and frailty. In addition, multi-pollutant strategies (WQS, Qgcomp, BKMR) were used to examine the joint effect of chemical mixture on frailty. A series of subgroup analyses and sensitivity analyses were conducted as well. RESULTS In the multivariate logistic regression model, each unit increase in natural log-transformed BPA (OR: 1.21; 95%CI: 1.04, 1.40), MBP (OR: 1.25; 95%CI: 1.07, 1.46), MBzP (OR: 1.18; 95%CI: 1.03, 1.36), and MiBP (OR: 1.19; 95%CI: 1.03, 1.37) were significantly associated with higher odds of frailty. The results of the WQS and Qgcomp indicated that increasing quartiles of chemical mixture was associated with odds of frailty with ORs of 1.29 (95%CI: 1.01, 1.66) and 1.37 (95%CI: 1.06, 1.76). The weight of MBzP is dominant in both the WQS index and the positive weight of Qgcomp. In the BKMR model, the cumulative effect of chemical mixture was positively correlated with the prevalence of frailty. CONCLUSIONS In summary, higher levels of BPA, MBP, MBzP, and MiBP are significantly associated with higher odds of frailty. Our study provides preliminary evidence that phenol and phthalate biomarker mixture is positively associated with frailty, with MBzP contributing most to the positive association.
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Affiliation(s)
- Xianwei Guo
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Dongdong Zhao
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China; The First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei 230022, Anhui, China
| | - Jia Meng
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Wenjing Hu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Birong Wu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Xingyue Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Wenqi Su
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Muzi Meng
- UK Program Site, American University of the Caribbean School of Medicine, Vernon Building Room 64, Sizer St, Preston PR1 1JQ, United Kingdom; Bronxcare Health System, 1650 Grand Concourse, The Bronx, NY 10457, USA
| | - Guangbo Qu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China.
| | - Yehuan Sun
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China.
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16
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Wang H, Guo X, Song Q, Su W, Meng M, Sun C, Li N, Liang Q, Qu G, Liang M, Ding X, Sun Y. Association between the history of abortion and gestational diabetes mellitus: A meta-analysis. Endocrine 2023; 80:29-39. [PMID: 36357823 DOI: 10.1007/s12020-022-03246-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 10/30/2022] [Indexed: 11/12/2022]
Abstract
PURPOSE Gestational diabetes mellitus (GDM) is a common metabolic disease in pregnant women. The purpose of this study was to determine whether a history of abortion increases the risk of GDM by meta-analysis. METHODS A comprehensive literature search was conducted in nine databases of studies on the association between abortion history and GDM up to April 12, 2022. Fixed- or random-effects models were used to estimate the pooled odds ratio (OR) and 95% CI. The I square value (I2) was used to assess heterogeneity. Possible sources of heterogeneity were explored by conducting subgroup analysis and meta-regression. A sensitivity analysis was also performed for this meta-analysis. Publication bias was assessed by funnel plots and Egger's tests. RESULTS Thirty-one studies enrolling 311,900 subjects were included in this meta-analysis. The risk of GDM was higher in women who experienced abortion than in those who did not (OR = 1.41 95% CI: 1.28-1.55, I2 = 66.8%). The risk of GDM increased with an increasing number of abortions (1 time: OR = 1.67, 95% CI = 1.26-2.22; 2 times: OR = 2.10, 95% CI = 1.26-3.49; ≥3 times: OR = 2.49, 95% CI = 1.24-5.01). Both spontaneous abortion (OR = 1.52, 95% CI = 1.30-1.78) and induced abortion (OR = 1.07, 95% CI = 1.03-1.11) were associated with an increased risk of GDM. CONCLUSIONS A history of abortion was associated with an increased risk of GDM in pregnant women, which may be a risk factor for predicting GDM.
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Affiliation(s)
- Hao Wang
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Anhui, China
| | - Xianwei Guo
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Anhui, China
| | - Qiuxia Song
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Anhui, China
| | - Wanying Su
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Anhui, China
| | - Muzi Meng
- UK Program Site, American University of the Caribbean School of Medicine, Vernon Building Room 64, Sizer St, Preston, PR1 1JQ, United Kingdom
- Bronxcare Health System, 1650 Grand Concourse, The Bronx, NY, 10457, USA
| | - Chenyu Sun
- AMITA Health Saint Joseph Hospital Chicago, 2900 N. Lake Shore Drive, Chicago, IL, 60657, USA
| | - Ning Li
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Anhui, China
| | - Qiwei Liang
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Anhui, China
- Children's Hospital of Anhui Medical University, Anhui, China
| | - Guangbo Qu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Anhui, China
| | - Mingming Liang
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Anhui, China
| | - Xiuxiu Ding
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Anhui, China
| | - Yehuan Sun
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Anhui, China.
- Chaohu Hospital, Anhui Medical University, Anhui, China.
- Center for Evidence-Based Practice, Anhui Medical University, Anhui, China.
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Zwicker P, Meng M, Friesecke S, Stein T, Herzog A, Herzer C, Kammerlander M, Gebhardt T, Kugler C, Kramer A. An interactive feedback system for increasing hand antisepsis adherence in stationary intensive care. J Hosp Infect 2023; 133:73-80. [PMID: 36646137 DOI: 10.1016/j.jhin.2022.12.017] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 12/05/2022] [Accepted: 12/13/2022] [Indexed: 01/15/2023]
Abstract
BACKGROUND Pathogens causing infections are in many cases transmitted via the hands of personnel. Thus, hand antisepsis has strong epidemiological evidence of infection prevention. Depending on various factors, hand antisepsis adherence ranges between 9.1% and 85.2%. AIM To evaluate a new transponder system that reminded medical staff to use an alcohol-based hand rub based on indication by giving real-time feedback, to detect hand antisepsis adherence. METHODS The monitoring system consisted of three components: a portable transponder detecting alcohol-based hand rub and able to give feedback; a beacon recognizing entries to and exits from the patient's surroundings; and a sensor placed at the hand-rub dispensers to count the number of hand rubs. With these components, the system provided feedback when hand antisepsis was not conducted although it was necessary according to moments 1, 4, and 5 of hand antisepsis. Adherence was measured in two use-cases with five phases, starting with the baseline measurement followed by intervention periods and phases without intervention to test the sustainability of the feedback. FINDINGS Using the monitoring system, hand antisepsis adherence was increased by up to 104.5% in comparison to the baseline measurement. When the intervention ceased, however, hand antisepsis adherence decreased to less than or equal to the baseline measurement. CONCLUSION A short-term intervention alone is not sufficient to lead to a long-term change in hand antisepsis adherence. Rather, permanent feedback and/or the integration in a multi-modal intervention strategy are necessary.
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Affiliation(s)
- P Zwicker
- Institute of Hygiene and Environmental Medicine, University Medicine, Greifswald, Germany; Section Antiseptic Stewardship of the German Society of Hospital Hygiene, Berlin, Germany.
| | - M Meng
- Institute of Nursing Science, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Federal Institute for Vocational Education and Training (VET), Bonn, Germany
| | - S Friesecke
- Department of Internal Medicine B, Medical Intensive Care Unit, University Medicine, Greifswald, Germany
| | - T Stein
- Neurological Rehabilitation Center gGmbH, Greifswald, Germany
| | - A Herzog
- HyHelp AG, Frankfurt am Main, Germany; United-Ventures GmbH, Frankfurt am Main, Germany
| | - C Herzer
- GWA Hygiene GmbH, Stralsund, Germany
| | - M Kammerlander
- Institute of Nursing Science, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Institute of Medical Biometry and Statistics, University of Freiburg, Freiburg, Germany
| | | | - C Kugler
- Institute of Nursing Science, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - A Kramer
- Institute of Hygiene and Environmental Medicine, University Medicine, Greifswald, Germany; Section Antiseptic Stewardship of the German Society of Hospital Hygiene, Berlin, Germany
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Li XC, Chen ZX, Li D, Liu WZ, Meng M. Chemical and mechanical stability of an ion-exchanged lithium disilicate glass in artificial saliva. J Mech Behav Biomed Mater 2023; 137:105563. [PMID: 36375276 DOI: 10.1016/j.jmbbm.2022.105563] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/03/2022] [Accepted: 11/06/2022] [Indexed: 11/11/2022]
Abstract
Multi-component lithium disilicate (LD) glasses were ion-exchanged in a pure or mixed nitrate salt bath. The surface morphologies, mechanical properties, chemical stability and ion leaching of ion-exchanged LD glasses before and after storage in artificial saliva for 21 days were investigated. It can be found that chemical stability of ion-exchanged LD glass was temperature-dependent. The residual compressive stress induced by ion-exchange increased the chemical potential of alkali ions in glass, and the ion-exchanged LD glass, especially 235 °C/64 h group, chemical stability in artificial saliva for 21 days were deteriorated. Back-exchange treatment could relax the stress on the outermost layer of the ion-exchanged LD glass without deteriorating its strengthening effect, and back-exchanged LD glass presented good chemical and mechanical stability in artificial saliva. The results might help to enhance the service stability of ion-exchanged LD glass-ceramics in the oral condition.
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Affiliation(s)
- X C Li
- Shaanxi Key Laboratory of Biomedical Metallic Materials, Northwest Institute for Non-ferrous Metal Research, Xi'an, 710016, China
| | - Z X Chen
- State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - D Li
- School of Science, Xi'an University of Posts and Telecommunications, Xi'an, 710121, China
| | - W Z Liu
- Shaanxi Key Laboratory of Biomedical Metallic Materials, Northwest Institute for Non-ferrous Metal Research, Xi'an, 710016, China
| | - M Meng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, China.
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Sun X, Yao F, Yin C, Meng M, Lan Y, Yang M, Sun C, Liu L. Independent value of PMOI on hCG day in predicting pregnancy outcomes in IVF/ICSI cycles. Front Endocrinol (Lausanne) 2023; 14:1086998. [PMID: 36909315 PMCID: PMC9997210 DOI: 10.3389/fendo.2023.1086998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 01/30/2023] [Indexed: 02/25/2023] Open
Abstract
OBJECTIVES The aim of this study was to determine whether, on the day of human chorionic gonadotropin (hCG) injection, the progesterone to number of mature oocytes index (PMOI) can be used alone or together with other parameters in a fresh embryo transfer in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI) cycle to predict pregnancy outcome. METHODS This was a retrospective cohort study of all couples who underwent a clinical pregnancy and received a fresh IVE/ICSI cycle at a single large reproductive medical center between June 2019 and March 2022. The study involved a total of 1239 cycles. To analyze risk factors associated with pregnancy outcomes on the day of HCG injection, univariate and multivariate logistic regression analyses were used. The area under the curve (AUC) was determined, and PMOI and other factors were compared using receiver operating characteristic (ROC) curves. RESULTS The clinical pregnancy rate was significantly higher in group A (60.76%) than in the other groups (Group B: 52.92% and Group C:47.88%, respectively, p =0.0306). Univariate and multivariate logistic regression revealed that PMOI levels were significantly correlated with the probability of pregnancy outcome, independent of other risk factors. More importantly, PMOI levels independently predict the occurrence of pregnancy outcome, comparable to the model combining age. The optimal serum PMOI cutoff value for pregnancy outcome was 0.063 ug/L. CONCLUSION Our results suggest that PMOI levels have an independent predictive value for pregnancy outcome in fresh IVF/ICSI cycles.
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Affiliation(s)
- Xingyu Sun
- Department of Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Reproductive Medicine Center, the Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Fei Yao
- Department of Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Chengliang Yin
- Faculty of Medicine, Macau University of Science and Technology, Macau, Macau SAR, China
| | - Muzi Meng
- United Kingdom (UK) Program Site, American University of the Caribbean School of Medicine, Preston, United Kingdom
- Bronxcare Health System, New York City, NY, United States
| | - Yunzhu Lan
- Obstetrics Department, The Fourth Affiliated Hospital, College of Medicine, Zhejiang University, Hefei, China
| | - Ming Yang
- Obstetrics Department, The First Dongguan Affiliated Hospital Of Guangdong Medical University, Dongguan, China
| | - Chenyu Sun
- Department of Thyroid and Breast Surgery, The Second Hospital of Anhui Medical University, Hefei, China
- *Correspondence: Chenyu Sun, ; Ling Liu,
| | - Ling Liu
- Reproductive Medicine Center, the Affiliated Hospital of Southwest Medical University, Luzhou, China
- *Correspondence: Chenyu Sun, ; Ling Liu,
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He Y, Liu L, Yao F, Sun C, Meng M, Lan Y, Yin C, Sun X. Assisted reproductive technology and interactions between serum basal FSH/LH and ovarian sensitivity index. Front Endocrinol (Lausanne) 2023; 14:1086924. [PMID: 37206442 PMCID: PMC10190590 DOI: 10.3389/fendo.2023.1086924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 04/10/2023] [Indexed: 05/21/2023] Open
Abstract
Objectives This study aimed to investigate whether the FSH (follicle-stimulating hormone)/LH (Luteinizing hormone) ratio correlates with ovarian response in a cross-sectional retrospective study of a population with normal levels of anti-Müllerian hormone (AMH). Methods This was a retrospective cross-sectional study with data obtained from medical records from March 2019 to December 2019 at the reproductive center in the Affiliated Hospital of Southwest Medical University. The Spearmans correlation test evaluated correlations between Ovarian sensitivity index (OSI) and other parameters. The relationship between basal FSH/LH and ovarian response was analyzed using smoothed curve fitting to find the threshold or saturation point for the population with mean AMH level (1.1<AMH<6μg/L). The enrolled cases were divided into two groups according to AMH threshold. Cycle characteristics, cycle information and cycle outcomes were compared. The Mann-Whitney U test was used to compare different parameters between two groups separated by basal FSH/LH in the AMH normal group. Univariate logistic regression analysis and multivariate logistic regression analysis were performed to find the risk factor for OSI. Results A total of 428 patients were included in the study. A significant negative correlation was observed between OSI and age, FSH, basal FSH/LH, Gn total dose, and Gn total days, while a positive correlation was found with AMH, AFC, retrieved oocytes, and MII egg. In patients with AMH <1.1 ug/L, OSI values decreased as basal FSH/LH levels increased, while in patients with 1.1<AMH<6 ug/L, OSI values remained stable with increasing basal FSH/LH levels. Logistic regression analysis identified age, AMH, AFC, and basal FSH/LH as significant independent risk factors for OSI. Conclusions We conclude that increased basal FSH/LH in the AMH normal group reduces the ovarian response to exogenous Gn. Meanwhile, basal FSH/LH of 3.5 was found to be a useful diagnostic threshold for assessing ovarian response in people with normal AMH levels. OSI can be used as an indicator of ovarian response in ART treatment.
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Affiliation(s)
- Yumei He
- Department of Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Ling Liu
- Department of Reproductive Medicine Center, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Fei Yao
- Department of Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Chenyu Sun
- Department of Thyroid and Breast Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Muzi Meng
- UK Program Site, American University of the Caribbean School of Medicine, Preston, United Kingdom
- Bronxcare Health System, New York City, NY, United States
| | - Yunzhu Lan
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Chengliang Yin
- Faculty of Medicine, Macau University of Science and Technology, Macau, Macao SAR, China
- *Correspondence: Chengliang Yin, ; Xingyu Sun,
| | - Xingyu Sun
- Department of Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
- *Correspondence: Chengliang Yin, ; Xingyu Sun,
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Sun X, Sun C, Meng M, Liu L. Association of ABO blood groups with ovarian reserve: a retrospective cohort study in Chinese Han women younger than 40 years with infertility. J Ovarian Res 2022; 15:132. [PMID: 36539903 PMCID: PMC9769009 DOI: 10.1186/s13048-022-01075-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 12/12/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Ovarian reserve reflects both the quantity and quality of oocytes available for procreation and is affected by many known and unknown factors. ABO blood type is related to several infertility processes, but it is unclear whether and how ABO blood type affects ovarian reserve. OBJECTIVE The purpose of the study was to explore the correlation between ABO blood types and ovarian reserve in infertile Chinese Han women under 40 years of age undergoing the in vitro fertilization (IVF)/ intracytoplasmic sperm injection (ICSI)-embryo transfer (IVF/ICSI-ET) treatment. METHODS Women aged < 40 years who underwent IVF/ICSI-ET at our institution and had a documented ABO blood type were eligible for this study. In this study, patients were divided into two groups according to the diminished ovarian reserve (DOR) group (AMH < 1.1 ng/mL, AFC < 6) and the non-diminished ovarian reserve (non-DOR) group (AMH ≥ 1.1 ng/mL, AFC ≥ 6). The relationship between ovarian reserve and ABO blood group was determined by correlation analysis. RESULTS In this retrospective cohort study, clinical data were collected from 1690 Chinese Han women treated with IVF/ ICSI-ET in hospital records between April 2019 and March 2020 in the affiliated hospital of Southwest Medical University, located in Luzhou, China. The differences in age, duration of infertility, BMI, FSH, FSH / LH, and p (DOR vs non-DOR) for each parameter (DOR vs non-DOR) were statistically significant, and the differences in LH and E2 were not statistically significant. ABO blood groups were most prevalent in the DOR group with O (143, 34.8%) and A (122, 29.7%) and in the non-DOR group with A (428, 33.5%) and O (419, 32.8%). ABO blood groups were most prevalent in the DOR group with O (n = 57, 30.5%) and A (n = 54, 28.9%) and in the non-DOR group with A (n = 335, 34.0%) and O (n = 323, 32.8%) were the most frequent in the non-DOR group. CONCLUSIONS In this retrospective cohort study, we confirmed the lack of a significant association between ABO blood type and ovarian reserve. Further studies are needed to clarify whether there is any prognostic correlation between ABO blood group and ovarian reserve in women undergoing IVF/ICSI-ET.
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Affiliation(s)
- Xingyu Sun
- grid.488387.8Department of Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000 Sichuan China ,grid.488387.8Department of Reproductive Medicine Center, the Affiliated Hospital of Southwest Medical University, 25 Taiping Street, Luzhou, China
| | - Chenyu Sun
- grid.488798.20000 0004 7535 783XAMITA Health Saint Joseph Hospital Chicago, 2900 N. Lake Shore Drive, Chicago, IL 60657 USA
| | - Muzi Meng
- UK Program Site, American University of the Caribbean School of Medicine, Vernon Building Room 64, Sizer St, Preston, PR1 1JQ UK ,Bronxcare Health System, 1650 Grand Concourse, The Bronx, NY 10457 USA
| | - Ling Liu
- grid.488387.8Department of Reproductive Medicine Center, the Affiliated Hospital of Southwest Medical University, 25 Taiping Street, Luzhou, China
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Sun X, Xiong W, Liu L, Xiong J, Liao C, Lan Y, Li F, Tao S, Meng M, Sun C, Mao X. Comparison of the predictive capability of antral follicle count vs. the anti-Müllerian hormone for ovarian response in infertile women. Front Endocrinol (Lausanne) 2022; 13:862733. [PMID: 36387919 PMCID: PMC9659916 DOI: 10.3389/fendo.2022.862733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 09/14/2022] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES The aim of this study was to compare the predictive capability of antral follicle count (AFC) and the anti-Müllerian hormone (AMH) on ovarian response in infertile women and to identify potential factors influencing retrieved oocytes. METHODS A total of 2585 infertile women who underwent in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) cycles had been enrolled in this study. Spearman correlation was used to investigate the correlation between retrieved oocytes and AFC. Multiple linear regression analysis was used to study the parameters affecting the number of retrieved oocytes. RESULTS Spearman correlation and multiple linear regression analysis revealed that the oocyte retrieval number was positively correlated with AFC (r = 0.651, p < 0.001) and AMH (r = 0.566, p < 0.001) and negatively correlated with age (r = -0.425, p < 0.001) and regimen selection (r = -0.233 p < 0.001). There was no significant correlation between retrieved oocytes and BMI (p = 0.913). ROC analysis revealed that AFC was a better predictor of adverse effects than AMH, BMI, and age (AUC: 0.916 VS 0.791, 0.575, 0.752). Meanwhile, AFC and AMH were comparable in predicting high response (AUC = 0.731 and AUC = 0.733, respectively). CONCLUSIONS This study showed that retrieved oocytes were positively correlated with serum AMH and AFC and negatively correlated with age and BMI. AFC had an ideal predictive performance in ovarian response prediction. The mechanism of the effect of AFC on ovarian response during controlled ovarian hyperstimulation (COH) needs to be further investigated.
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Affiliation(s)
- Xingyu Sun
- Department of Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Wang Xiong
- Department of Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Liting Liu
- Department of Gynecology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Junjun Xiong
- Department of Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Chenlu Liao
- Department of Ophthalmology, The First People’s Hospital of Neijiang, Neijiang, China
| | - Yunzhu Lan
- Department of Gynecology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Feifei Li
- Department of Gynecology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Shufei Tao
- Family Medicine, Carle Foundation Hospital, Urbana, IL, United States
| | - Muzi Meng
- American University of the Caribbean School of Medicine, Preston, United Kingdom
- Bronxcare Health System, The Bronx, NY, United States
| | - Chenyu Sun
- AMITA Health Saint Joseph Hospital Chicago, Chicago, IL, United States
| | - Xiguang Mao
- Department of Gynecology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
- *Correspondence: Xiguang Mao,
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Men TJ, Chai ZG, Li XC, Li D, Wang F, He L, Zhang SF, Meng M. Improving early running-in wear characteristics for dental lithium disilicate glass-ceramics by ion-exchange. J Mech Behav Biomed Mater 2021; 126:105037. [PMID: 34906862 DOI: 10.1016/j.jmbbm.2021.105037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 12/03/2021] [Accepted: 12/07/2021] [Indexed: 10/19/2022]
Abstract
OBJECTIVES This study examined the effects of Li+→Na+ ion-exchange on the early wear performance of dental lithium disilicate (LD) glass-ceramics. METHODS Specimens with different shapes were prepared using IPS e.max Press as the LD glass-ceramics. Ion-exchange was conducted by placing polished specimens in molten salt containing 25% NaNO3 and 75% KNO3 at 385 °C for 16 or 64 h. The ion-exchanged specimens were analyzed using X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDS) to investigate the structure and the elemental distribution. Thereafter, the specimens were tested for flexural strength, Vickers hardness, and fracture resistance. A portion of the specimens were tested with a pin-on-disk tribometer with 10 N for 40 × 104 wear cycles in artificial saliva. Wear analysis of the specimens was performed using a 3D profilometer and analyzed with one-way analyses of variance and Tukey's post hoc pairwise comparisons. Worn surfaces were examined with scanning electron microscopy. RESULTS The LD glass-ceramics exhibited strong time-dependent wear behavior, with typical running-in and steady wear stages. Ion-exchange treatments at 385 °C for 16 h and 64 h both enhanced the mechanical properties and decreased the wear rates of early running-in wear stage. The early wear performance of specimens treated with ion-exchange for long time (64 h) was improved significantly. CONCLUSION A thicker ion-exchange layer may be obtained by processing ion-exchange for a long time. This protocol improves the early wear performance of the glass-ceramics effectively. CLINICAL SIGNIFICANCE Dental restorations may fail prematurely due to excessive wear. It is important to improve the early wear performance of the glass-ceramics. Ion-exchange has the potential to strengthen dental LD glass-ceramics. Understanding the effect of ion-exchange on the early wear performance of glass-ceramics provides insight improving the early wear performance of these restorations.
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Affiliation(s)
- T J Men
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, China
| | - Z G Chai
- UB-Care Dental Clinic of Xian Beilin, Xi'an, 710032, China
| | - X C Li
- Northwest Institute for Non-ferrous Metal Research, Xi'an, 710016, China
| | - D Li
- School of Science, Xi'an University of Posts and Telecommunications, Xi'an, 710121, China
| | - F Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, China
| | - L He
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - S F Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, China.
| | - M Meng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, China.
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Li XC, Li D, Zhang SF, Jing L, Zhou WH, He L, Yu S, Meng M. Effect of Li +/Na + exchange on mechanical behavior and biological activity of lithium disilicate glass-ceramic. J Mech Behav Biomed Mater 2021; 126:105036. [PMID: 34902754 DOI: 10.1016/j.jmbbm.2021.105036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 12/03/2021] [Accepted: 12/07/2021] [Indexed: 11/26/2022]
Abstract
Lithium disilicate (LD) glass-ceramics with a stoichiometric composition were ion-exchanged in pure NaNO3 or mixed NaNO3 + KNO3 molten salt baths below the glass transition temperature (Tg). The microstructures, surface morphologies, mechanical properties and bioactivities of the ion-exchanged glass-ceramics were studied in detail. It was found that the strength and toughness of LD glass-ceramic could be enhanced from 175 MPa to 0.96 MPa m1/2 before ion-exchange to 546 MPa and 4.31 MPa m1/2 respectively under a lowered ion-exchange temperature because the less stress relaxation. In addition, a gradient of Na+ rich layer in the surface of glass-ceramic was induced by Li+/Na+ exchange, which could be beneficial to the formation of HA (Hydroxyapatite) with nano-size porous after soaking in SBF (Simulated Body Fluid) solution and exhibited better bioactivity compared with the original LD glass-ceramic. The results might provide a reference for the strengthening and biological activation of LD glass-ceramics in bone restoration applications.
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Affiliation(s)
- X C Li
- Shaanxi Key Laboratory of Biomedical Metallic Materials, Northwest Institute for Non-ferrous Metal Research, Xi'an, 710016, China.
| | - D Li
- School of Science, Xi'an University of Posts and Telecommunications, Xi'an, 710121, China
| | - S F Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, China
| | - L Jing
- Shaanxi Key Laboratory of Biomedical Metallic Materials, Northwest Institute for Non-ferrous Metal Research, Xi'an, 710016, China
| | - W H Zhou
- Shaanxi Key Laboratory of Biomedical Metallic Materials, Northwest Institute for Non-ferrous Metal Research, Xi'an, 710016, China
| | - L He
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - S Yu
- Shaanxi Key Laboratory of Biomedical Metallic Materials, Northwest Institute for Non-ferrous Metal Research, Xi'an, 710016, China.
| | - M Meng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, China.
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Wang GM, Yuan CH, Qu C, Meng M, Xiu DR. [Advances in indocyanine green fluorescence imaging during hepatectomy]. Zhonghua Wai Ke Za Zhi 2021; 59:871-875. [PMID: 34619914 DOI: 10.3760/cma.j.cn112139-20201130-00828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
While surgical operation is the preferred treatment for liver malignancies,the postoperative recurrence rate remains high. In the early 21st century,Japanese scientists first reported the use of indocyanine green(ICG) in liver resection. Follow-up studies also found its potential applications such as identifying tumors,determining surgical margins,delineating segmental boundaries,and preventing bile leakage. At present,ICG fluorescence imaging is applied to some types of hepatectomy with excellent effect and is expected to assist in generating surgical strategies for liver malignancies. However,its safety and efficacy still need further studies to evaluate.
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Affiliation(s)
- G M Wang
- Department of General Surgery,Peking University Third Hospital,Beijing 100191,China
| | - C H Yuan
- Department of General Surgery,Peking University Third Hospital,Beijing 100191,China
| | - C Qu
- Department of General Surgery,Peking University Third Hospital,Beijing 100191,China
| | - M Meng
- Department of General Surgery,Peking University Third Hospital,Beijing 100191,China
| | - D R Xiu
- Department of General Surgery,Peking University Third Hospital,Beijing 100191,China
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Vorobyev A, Petrova S, Sannikova V, Meng M, Bitsadze V, Khizroeva D, Solopova A, Makatsariya A. PO-59 Anticoagulant therapy as a potential intervention to prevent relapse in patients with advanced ovarian cancer. Thromb Res 2021. [DOI: 10.1016/s0049-3848(21)00232-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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27
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Yu F, Luo ML, Xu RC, Huang L, Yu HH, Meng M, Jia JQ, Hu ZH, Wu WZ, Tay FR, Xiao YH, Niu LN, Chen JH. A novel dentin bonding scheme based on extrafibrillar demineralization combined with covalent adhesion using a dry-bonding technique. Bioact Mater 2021; 6:3557-3567. [PMID: 33842741 PMCID: PMC8022110 DOI: 10.1016/j.bioactmat.2021.03.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/26/2021] [Accepted: 03/11/2021] [Indexed: 01/21/2023] Open
Abstract
Dentin bonding is a dynamic process that involves the penetration of adhesive resin monomers into the extrafibrillar and intrafibrillar demineralized collagen matrix using a wet-bonding technique. However, adhesive resin monomers lack the capacity to infiltrate the intrafibrillar space, and the excess water that is introduced by the wet-bonding technique remains at the bonding interface. This imperfectly bonded interface is inclined to hydrolytic degradation, severely jeopardizing the longevity of bonded clinical restorations. The present study introduces a dentin bonding scheme based on a dry-bonding technique, combined with the use of extrafibrillar demineralization and a collagen-reactive monomer (CRM)-based adhesive (CBA). Selective extrafibrillar demineralization was achieved using 1-wt% high-molecular weight (MW) carboxymethyl chitosan (CMCS) within a clinically acceptable timeframe to create a less aggressive bonding substance for dentin bonding due to its selectively extrafibrillar demineralization capacity. CMCS demineralization decreased the activation of in situ collagenase, improved the shrinking resistance of demineralized collagen, and thus provided stronger and more durable bonding than traditional phosphoric acid etching. The new dentin bonding scheme that contained CMCS and CBA and used a dry-bonding technique achieved an encouraging dentin bonding strength and durability with low technical sensitivity. This bonding scheme can be used to improve the stability of the resin-dentin interface and foster the longevity of bonded clinical restorations.
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Affiliation(s)
- F Yu
- Department of Stomatology, 920 Hospital of Joint Logistics Support Force, PLA, Kunming, 650032, China
| | - M L Luo
- Department of Stomatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - R C Xu
- Department of Stomatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China.,Department of Stomatology, The Third Medical Center, Chinese PLA General Hospital, Beijing, China
| | - L Huang
- Department of General Dentistry and Emergency, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - H H Yu
- National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - M Meng
- National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - J Q Jia
- Department of Stomatology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Z H Hu
- Department of Stomatology, 920 Hospital of Joint Logistics Support Force, PLA, Kunming, 650032, China
| | - W Z Wu
- Department of Stomatology, 920 Hospital of Joint Logistics Support Force, PLA, Kunming, 650032, China
| | - F R Tay
- The Dental College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Y H Xiao
- Department of Stomatology, 920 Hospital of Joint Logistics Support Force, PLA, Kunming, 650032, China
| | - L N Niu
- National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - J H Chen
- National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
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Meng M, Li X, Li D, Guo Z, Li K, Guo J, He L, Zhang S. Improved reliability of wear performance for a fluorapatite veneering porcelain by ion-exchange strengthening and toughening. J Mech Behav Biomed Mater 2020; 112:103986. [DOI: 10.1016/j.jmbbm.2020.103986] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 07/09/2020] [Accepted: 07/11/2020] [Indexed: 10/23/2022]
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Li D, Chen ZX, Zhang YM, Li XC, Meng M, He L, Zhang ZZ. Improved reliability of mechanical behavior for a thermal tempered lithium disilicate glass-ceramic by regulating the cooling rate. J Mech Behav Biomed Mater 2020; 114:104191. [PMID: 33254008 DOI: 10.1016/j.jmbbm.2020.104191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 10/23/2022]
Abstract
Traditional thermal tempering was applied to lithium disilicate (LD) glass-ceramic specimens with bar-like and disc-like shapes. The tempering process was conducted by heating the specimens to a temperature below the dynamic softening point, and then rapid cooling in silicone oil with different temperatures ranging from room-temperature to 300 °C to regulate the cooling rate. Effect of the oil-temperature on mechanical behavior of the tempered glass-ceramic was investigated. For the tempering at the lower oil-temperature (e.g., at room-temperature), it was found that the LD glass-ceramic specimens with both the bar-like and disc-like shapes could be remarkably strengthen and toughen, however, obvious anisotropy in fracture toughness was displayed by the specimens with the bar-like shape. With increasing the oil-temperature up to 250 °C, the mechanical anisotropy of the bar-like specimens could be significantly alleviated without much loss of the strengthening effect. The results can provide references for improving reliability of mechanical behavior for the tempered LD glass-ceramic by regulating the cooling condition according to specimen geometry.
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Affiliation(s)
- D Li
- School of Science, Xi'an University of Posts and Telecommunications, Xi'an, 710121, China
| | - Z X Chen
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Y M Zhang
- School of Science, Xi'an University of Posts and Telecommunications, Xi'an, 710121, China
| | - X C Li
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China
| | - M Meng
- State Key Laboratory of Military Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, China
| | - L He
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Z Z Zhang
- State Key Laboratory of Military Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, China.
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Li X, Meng M, Li D, Wei R, He L, Zhang S. Strong time-dependence for strengthening a lithium disilicate parent glass and the corresponding glass-ceramic by Li+/Na+ exchange. J Mech Behav Biomed Mater 2019; 100:103394. [DOI: 10.1016/j.jmbbm.2019.103394] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 08/06/2019] [Accepted: 08/07/2019] [Indexed: 11/25/2022]
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Meng M, Li XC, Guo JW, Zhou M, Niu LN, Tay FR, He L, Zhang SF. Improving the wear performance of feldspathic veneering porcelain by ion-exchange strengthening. J Dent 2019; 90:103210. [PMID: 31600535 DOI: 10.1016/j.jdent.2019.103210] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 08/25/2019] [Revised: 09/28/2019] [Accepted: 10/04/2019] [Indexed: 02/04/2023] Open
Abstract
OBJECTIVES The present study examined the effects of Na+→K+ ion-exchange on the wear performance of feldspathic veneering porcelain. METHODS Bar and disk specimens were prepared using IPS classic as the feldspathic veneering porcelain. After ion-exchange by immersion of the specimens in melted KNO3 at two temperatures for different time-periods, the bars were tested for flexural strength and Vickers surface hardness. The disks were paired with zirconia antagonists and tested with a pin-on-disk tribometer with 10 N for 70☓104 wear cycles in artificial saliva. Wear analysis of the porcelain and zirconia was performed using 3D profilometer and analysed with one-way analysis of variance and Tukey's post-hoc pairwise comparison procedures. Worn surfaces were examined with scanning electron microscopy. RESULTS The feldspathic veneering porcelain exhibited strong time-dependent wear behaviour, with typical running-in and steady wear stages. Ion-exchange treatments at 380 °C and 440 °C both enhanced the mechanical properties, decreased the wear rates of running-in wear and steady wear. The wear performance of porcelain treated by ion-exchange at lower temperature (380 °C) was improved significantly, especially reducing the wear rate of the running-in stage. CONCLUSION A thicker ion-exchange layer with less stress relaxation may be obtained by ion-exchange at lower exchange temperature for a long processing time. Such a protocol improves the wear performance of the porcelain effectively. CLINICAL SIGNIFICANCE Restorations with veneering porcelain may fail prematurely due to excessive wear. It important to improve the wear performance of the porcelain. Ion-exchange has the potential to strengthen dental veneering porcelain. Understanding the effect of ion-exchange on the wear performance of porcelain provides insight improving the wear performance of these restorations.
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Affiliation(s)
- M Meng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, China
| | - X C Li
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China
| | - J W Guo
- Department of Prosthodontics, Guanghua School of Stomatology & Hospital of Stomatology, Guangdong Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, 510055, China
| | - M Zhou
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, China
| | - L N Niu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, China
| | - F R Tay
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, China; The Dental College of Georgia, Augusta University, Augusta, GA, USA.
| | - L He
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - S F Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, China.
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Guo MZ, Meng M, Feng CC, Wang X, Wang CL. A novel polysaccharide obtained from Craterellus cornucopioides enhances immunomodulatory activity in immunosuppressive mice models via regulation of the TLR4-NF-κB pathway. Food Funct 2019; 10:4792-4801. [PMID: 31314026 DOI: 10.1039/c9fo00201d] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The immunoregulatory effect of a novel Craterellus cornucopioides polysaccharide (CCP) with a triple-helix structure on immunosuppressive BALB/c mice models was investigated; moreover, the immune response of BALB/c mice models in the preventive and therapeutic treatment groups treated with CCP was explored, and its molecular mechanism was elucidated. It was found that the BALB/c mice models in the preventive groups treated with CCP (120 and 240 mg kg-1 d-1) had better immunoregulatory activity. The spleen and thymus weight indices of the BALB/c mice models were significantly increased, and the histopathological analysis indicated a protective function of CCP against the immunosuppression induced by cyclophosphamide (CTX). Moreover, CCP displayed definite and clear synergistic effects on the T- or B-lymphocyte proliferation induced by ConA or LPS, respectively, promoted the natural killer (NK) cell activity and significantly increased phagocytic activity to activate peritoneal macrophages in immunosuppressive mice. The western blot and quantitative real-time polymerase chain reaction (qRT-PCR) results provided comprehensive evidence that CCP could upregulate the protein expression of the G-protein-coupled cell membrane receptor TLR4 and the production of its downstream protein kinases (TRAF6, TK1, p-IKKα/β and NF-κB p50); this, in turn, enhanced the production of cytokines (IL-2, IL-6, TNF-α and IFN-α) through both preventive and therapeutic treatments via regulation of the TLR4-NFκB pathway in the peritoneal macrophage of immunosuppressive mice.
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Affiliation(s)
- M-Z Guo
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China.
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Witjes J, Gschwend J, Palou J, Meng M, Chang S, Shore N, Konety B, Steinberg G, Nishiyama H, Taylor J, Elegbe A, Lambert A, Zhu L, Ishii Y, Maeda T, Raybold B, Grossfeld G, Fischer B, Rutstein M, Hahn N. A phase 2, randomized study of nivolumab or nivolumab plus BMS-986205 with or without intravesical bacillus Calmette-Guerin in patients with bacillus Calmette-Guerin–unresponsive, high-risk, non-muscle invasive bladder cancer: CheckMate 9UT. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/s1569-9056(19)31328-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Guo MZ, Meng M, Duan SQ, Feng CC, Wang CL. Structure characterization, physicochemical property and immunomodulatory activity on RAW264.7 cells of a novel triple-helix polysaccharide from Craterellus cornucopioides. Int J Biol Macromol 2018; 126:796-804. [PMID: 30594621 DOI: 10.1016/j.ijbiomac.2018.12.246] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 12/20/2018] [Accepted: 12/26/2018] [Indexed: 01/08/2023]
Abstract
In the study, a new triple-helix polysaccharide with favorable stability was purified from C. cornucopioides. Its structural characterization, stability and solution behavior were investigated by the GC-MS, periodate oxidation-smith degradation, FT-IR, 1D and 2D NMR spectroscopy, methylation analysis, Scanning electron microscope, Congo-red, CD, TGA and DSC analysis. The results showed that Craterellus cornucopioide polysaccharide (CCP) possessed the molecular weight of 1.97 × 103 kDa, is mainly composed of mannose (48.73%), galactose (17.37%), glucose (15.97%) and xylose (17.93%), respectively. It was a heteroglycan with (1 → 3)‑linked‑β‑d‑Manp‑(1 → 6)‑linked α‑d‑Galp backbone distributed by (1 → 4)‑linked‑α‑d‑Xylp‑t‑α‑d‑Manp and t‑β‑d‑Glup units at O-6. The result of TGA and DSC assay indicated that CCP has a favorable thermal stability. MTT and Scanning electro microscopy (SEM) assay showed that CCP could significantly improve the proliferation activity and induce cells activation of RAW264.7 in a certain range of concentrations and period.
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Affiliation(s)
- M-Z Guo
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
| | - M Meng
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
| | - S-Q Duan
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
| | - C-C Feng
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
| | - C-L Wang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China.
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Tao R, Meng M, Niu LN, Chen JH, Nico CF, Ma C. [Investigation of sagittal root position in relation to the anterior maxillary alveolar bone: a cone-beam CT study in 300 cases with normal occlusion]. Zhonghua Kou Qiang Yi Xue Za Zhi 2017; 52:631-636. [PMID: 29972938 DOI: 10.3760/cma.j.issn.1002-0098.2017.10.010] [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] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the sagittal root position and apical bone height of the maxillary anterior teeth in order to provide anatomical information for immediate implant placement in the esthetic region. Methods: Cone-beam CT (CBCT) data from 300 randomly selected patients who met the inclusion criteria were included in this study. After three-dimensional reconstruction, the sagittal plane (the sagittal plane through the long axis of the tooth) was determined. The positions and angulations of the tooth roots were classified with reference to the alveolar process. By comparing the buccal and palatal bone thickness at the mid-root level, the toot positions with reference to the mid-alveolar line were defined and classified as follows, type B (closer to the buccal alveolar surface), type M (midway between the buccal and palatal alveolar surface) and type P (closer to the palatal alveolar surface). By comparing the angulations of the alveolar process with the long axis of the roots, the angulations were classified as follows, type 1 (root apex angulated toward the palatal side or parallel to the alveolus), type 2 (root apex angulated toward the buccal side with the long axis passing posterior to point A) and type 3 (root apex angulated toward the buccal side with the long axis passing anterior to point A). The frequency of each category was counted and the apical bone height was measured. The subjects were divided into three age groups, 19-30 years, 31-50 years and 51-75 years. Results: The overall mean apical bone height of the healthy maxillary central incisors was (9.2±3.0) mm, the lateral incisors was (10.0±2.9) mm and the canine was (8.1±3.1) mm. There was no significant difference in the height of apical bone between central incisors and lateral incisors (P>0.05). There was no significant difference in the height of apical bone between male and female (P>0.05). The height of apical bone in group 31-50 years and 51-75 years were greater than that in group 19-30 years (P<0.05), respectively. The proportion of the maxillary anterior teeth type B, M, P was 98.5% (1 774/1 800), 0.3% (5/1 800) and 1.2% (21/1 800) respectively. The proportion of type 1, 2, 3 was 2.6% (46/1 800), 58.6% (1 055/1 800) and 38.8% (699/1 800) respectively. Conclusions: There was enough apical bone height in the area of maxillary anterior teeth, but the majority of roots positioned more buccally.
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Affiliation(s)
- R Tao
- Department of Operative Dentistry, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Xi'an 710032, China
| | - M Meng
- Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Xi'an 710032, China
| | - L N Niu
- Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Xi'an 710032, China
| | - J H Chen
- Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Xi'an 710032, China
| | - C F Nico
- Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Xi'an 710032, China [Present address: Department of Oral Function and Prosthetic Dentistry, College of Dental Science, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands]
| | - Chufan Ma
- Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Xi'an 710032, China
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Zheng A, Yang X, Ye X, Huang G, Wei Z, Wang J, Han X, Ni X, Meng M. Bronchopleural fistula after lung ablation: Experience in two cases and literature review. Indian J Cancer 2016; 52 Suppl 2:e41-6. [PMID: 26728673 DOI: 10.4103/0019-509x.172512] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Bronchopleural fistula (BPF) complicating lung tumor ablation is rare but severe. The purpose of this article was to study its characteristics and treatments. MATERIALS AND METHODS Two of 682 (0.3%) sessions of lung microwave ablation (MWA) were complicated with BPF and documented. Two electronic databases were searched for reported cases of BPF after lung tumor ablation. Case selection and data collection were done by 3 independent reviewers. RESULTS A 56-year-old man and a 61-year-old woman developed BPF after MWA and died. Thirteen cases (mean age 63.8, 61.5% male) of BPF with adequate information were identified from 8 articles. Of the 13 cases, 5 (38.5%) had pulmonary co-morbidity, 3 (23.1%) had a history of pulmonary surgery, 7 (53.8%) had a target tumor adjacent or abutting pulmonary pleura, and 6 (46.2%) developed severe infections. After chest tube placement, pleurodesis, endoscopic therapy, surgery, and other treatments, 12 were cured and 1 died of BPF and pneumonia. CONCLUSION BPF is a rare but severe complication of lung ablation, and the management needs a multidisciplinary and individualized treatment strategy.
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Affiliation(s)
| | | | - X Ye
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
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Qiu M, Wu Z, Yuan Z, Meng M. MIR384, Inhibited By NF-Kb, Enhances Radiosensitivity in Human Non-Small Cell Lung Cancer Via Modulating DNA Damage Response and Repair Signaling. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Liu JJ, Wang W, Meng M, Liang CS, Zhang JW. Association between monoamine oxidase B A644G polymorphism and Parkinson's disease risk: a meta-analysis in the Chinese population. Genet Mol Res 2016; 15:gmr8349. [PMID: 27421021 DOI: 10.4238/gmr.15028349] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Although various individual studies have evaluated the correlation between monoamine oxidase B (MAOB), polymorphism, and Parkinson's disease (PD), the results remain inconclusive. Therefore, we performed a meta-analysis in the Chinese population to provide comprehensive data on the association between the MAOB polymorphism and PD. Eligible studies were identified via databases such as PubMed, Springer Link, Ovid, Chinese Wanfang Data Knowledge Service Platform, Chinese National Knowledge Infrastructure, and Chinese Biology Medicine, throughout November 2015. Pooled odds ratios (ORs) and 95% confidence intervals (CIs) were used to assess the strengths of these associations. Eight studies documenting a total of 1385 cases of PD and 1426 controls were included in this meta-analysis. Overall, no significant association was found between the MAOB A644G polymorphism and PD risk in the Chinese population. However, in subgroup analyses, where results were stratified by geographical areas and source of controls, increased risk for PD in Northern China was observed (allele A vs G: OR = 1.33, 95%CI = 1.11-1.58; AA vs GG: OR = 1.46, 95%CI = 1.09-1.97; AA + AG vs GG: OR = 1.42, 95%CI = 1.06-1.90). Similarly, population-based studies also showed significant association between the MAOB A644G polymorphism and PD risk among different populations (allele A vs G: OR = 1.29, 95%CI = 1.11-1.51; AA vs GG: OR = 1.41, 95%CI = 1.09-1.82; AA + AG vs GG: OR = 1.34, 95%CI = 1.04- 1.71). In conclusion, this meta-analysis provided evidence that the MAOB A644G polymorphism may contribute to PD development in Northern China. Further studies conducted in other ethnic groups are required for definite conclusions.
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Affiliation(s)
- J J Liu
- Department of Neurology, The First Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, China
| | - W Wang
- Department of Neurology, The First Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, China
| | - M Meng
- Department of Neurology, The First Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, China
| | - C S Liang
- Department of Clinical Medicine, Qiqihar Medical University, Qiqihar, Heilongjiang, China
| | - J W Zhang
- Department of Neurology, The First Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, China
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Tao J, Zheng L, Meng M, Li Y, Lu Z. Shp2 suppresses the adipogenic differentiation of preadipocyte 3T3-L1 cells at an early stage. Cell Death Discov 2016; 2:16051. [PMID: 27551539 PMCID: PMC4979423 DOI: 10.1038/cddiscovery.2016.51] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 05/05/2016] [Revised: 05/25/2016] [Accepted: 06/05/2016] [Indexed: 11/10/2022] Open
Abstract
Tyrosine phosphatase protein Shp2 is a potential therapeutic target for obesity. However, the mechanism of Shp2 during adipogenesis is not fully understood. The present study investigated the role of Shp2 in the terminal differentiation of preadipocytes. The results showed that Shp2 suppressed adipocyte differentiation in 3T3-L1 cells; overexpression of Shp2 reduced lipid droplet production in 3T3-L1 cells, whereas Shp2 knockdown increased lipid droplet production in 3T3-L1 cells. Furthermore, inhibition of Shp2 activity also enhanced adipocyte differentiation. Interestingly, Shp2 expression was specifically decreased early during differentiation in response to stimulation with the dexamethasone–methylisobutylxanthine–insulin (DMI) hormone cocktail. During the first 2 days of differentiation, Shp2 overexpression impaired the DMI-induced phosphorylation of signal transducer and activator of transcription 3 (STAT3) in 3T3-L1 cells and blocked the peak expression of CCAAT/enhancer-binding proteins β and δ during preadipocyte differentiation. In conclusion, Shp2 downregulated the early stages of hormone-induced differentiation of 3T3-L1 cells and inhibited the expression of the first wave of transcription factors by suppressing the DMI-induced STAT3 signaling pathway. These discoveries point to a novel role of Shp2 during adipogenesis and support the hypothesis that Shp2 could be a therapeutic target for the control of obesity.
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Affiliation(s)
- J Tao
- School of Pharmaceutical Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University , Xiamen, Fujian, China
| | - L Zheng
- School of Pharmaceutical Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University , Xiamen, Fujian, China
| | - M Meng
- School of Pharmaceutical Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University , Xiamen, Fujian, China
| | - Y Li
- School of Pharmaceutical Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University , Xiamen, Fujian, China
| | - Z Lu
- School of Pharmaceutical Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University , Xiamen, Fujian, China
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Yang X, Zhang K, Ye X, Zheng A, Huang G, Li W, Wei Z, Wang J, Han X, Ni X, Meng M, Ni Y, Yuan Q, Xing C. Artificial pneumothorax for pain relief during microwave ablation of subpleural lung tumors. Indian J Cancer 2016; 52 Suppl 2:e80-3. [PMID: 26728680 DOI: 10.4103/0019-509x.172519] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND When microwave ablation (MWA) is used for subpleural lesions, severe pain was the common side effect under the local anesthesia conditions during the procedure and postprocedure. To study the pain relief effect of artificial pneumothorax in the treatment of subpleural lung tumors with MWA. MATERIALS AND METHODS From February 2012 to October 2014, 37 patients with 40 subpleural lung tumors underwent MWA, including 17 patients of 19 sessions given artificial pneumothorax prior to MWA (group-I), and 20 patients of 21 sessions without artificial pneumothorax (group-II). Patient's pain assessment scores (10-point visual analog scale [VAS]) at during-procedure, 6, 12, 24, and 48 h after the MWA procedure and mean 24 h morphine dose were compared between the two groups. Complications of the artificial pneumothorax were also summarized. RESULTS Pain VAS were 0.53, 0.65, 1.00, 0.24, and 0.18 at during-procedure, 6, 12, 24, and 48 h for group-I and 5.53, 2.32, 2.82, 1.21, and 0.21 for group-II, respectively. Pain VAS in group I was significantly decreased at during-procedure, 6, 12, and 24 h after the MWA (P < 0.001). No statistical pain VAS difference was observed at 48 h after the MWA between the two groups (P > 0.05). The mean 24 h morphine dose was 5.00 mg in group-I and 12.63 mg in group-II (P = 0.000). "Artificial pneumothorax" related complications occurred in two patients from group-I, including one pleural effusion and one minor hemoptysis. No patient in group-I and group-II died during the procedure or in 30 days after MWA. CONCLUSION Artificial pneumothorax is a safe and effective method for pain relief during MWA of subpleural lung tumors.
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Affiliation(s)
| | | | - X Ye
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
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Wu Z, Qiu M, Meng M, Guo Y, Qian D, Yuan Z, Wang H, Zeng X. LIMD1 Radiosensitizes Human Non-Small Cell Lung Cancer Cells Via Inhibiting NF-kB Signaling. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Meng M, Wang H, Zaorsky N, Zhao X, Wu Z, Jiang B, Song Y, Zhuang H, Li F, Zhao L, Wang P, Yuan Z, Dong Q. Clinical Evaluation Stereotactic Radiation Therapy for Recurrent or Second Primary Mediastinal Lymph Node Metastases Originating From Non-Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ye X, Li W, Yang X, Li Y, Huang G, Wang J, Han X, Ni X, Wei Z, Zheng A, Meng M. Microwave ablation as palliative treatment of locally recurrent colorectal cancer. Indian J Cancer 2015; 52 Suppl 2:e61-3. [PMID: 26728676 DOI: 10.4103/0019-509x.172515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Dong Q, Yuan Z, Zhang B, Meng M, Zhuang H. Human Positive Cofactor 4 (PC4) Is a Promising Target to Improve the Radiation Therapy Effect of Esophageal Squamous Cell Carcinomas. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Meng M, Wang H, Zaorsky N, Jiang C, Qian D, Zhao L, Yuan Z, Wang P. Multimodality Therapy Is Recommended for Limited-Stage Combined Small-Cell Esophageal Carcinoma. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1117] [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: 11/25/2022]
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Meng M, Gao X, Han LJ, Li XY, Wu D, Li HZ, Chen QJ. Correlation analysis between starch properties and single nucleotide polymorphisms of waxy genes in common rye (Secale cereale L.). Genet Mol Res 2014; 13:2574-89. [PMID: 24446340 DOI: 10.4238/2014.january.14.7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
To understand the relationships between single nucleotide polymorphisms (SNPs) in the waxy gene and starch parameters in common rye, we performed sequence characterization, enzyme activity testing, amylopectin/amylose ratio evaluation, starch property testing, and correlation analysis. Specific primers were used to clone waxy from 20 rye cultivars. Sequence analysis showed that waxy was 2852 bp, including 11 exons, and sequence similarity across the 20 cultivars was over 98%. The Waxy protein showed >95% similarity with those from wheat, rice, and barley, the closest genetic relationship being with wheat Wx-A type. Waxy had multiple SNPs, most of which were located in the exons. Amino acid variants were found to be mainly distributed in the catalytic domain in an imbalanced state. Multi-factor correlation analysis revealed significant correlation among starch pasting parameters in rye flour. The Waxy protein activity was significantly negatively correlated with the amylose content and amylopectin/amylose ratio. However, pasting parameters, Waxy enzyme activity, and amylopectin/amylose content ratio were not correlated. The correlation of SNPs, the key catalytic site of Waxy, with starch parameters and enzyme activity suggested that both starch pasting parameters and Waxy protein activity were influenced by No. 260 amino acid (aa). Further, the 141 and 152 aa loci were found in the enzyme-catalyzing domain of Waxy. Interestingly, Waxy enzyme activity was also influenced by the 363 aa locus in the pliable region. These results provide important theoretical regarding the high-throughput quality identification of noodle starch, functional studies, directional selection, and molecular markers of wheat Wx subunits.
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Affiliation(s)
- M Meng
- College of Agronomy, Northwest A&F University, Yangling, China
| | - X Gao
- College of Agronomy, Northwest A&F University, Yangling, China
| | - L J Han
- College of Agronomy, Northwest A&F University, Yangling, China
| | - X Y Li
- College of Agronomy, Northwest A&F University, Yangling, China
| | - D Wu
- College of Agronomy, Northwest A&F University, Yangling, China
| | - H Z Li
- College of Agronomy, Northwest A&F University, Yangling, China
| | - Q J Chen
- College of Agronomy, Northwest A&F University, Yangling, China
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Meng M, Huo R, Han MY, Chi FL, Dai P, He L, Qin SY, Duan T. Detection of common deafness mutation by maternal plasma cell-free DNA. Eur Rev Med Pharmacol Sci 2014; 18:1544-1548. [PMID: 24899615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVES The aim is to investigate the use of the ligase detection reaction (LDR) microarray to examine the difference of the single nucleotide between the pregnant woman and the fetus by cell-free DNA in the maternal plasma in congenital deafness. MATERIALS AND METHODS The proband and the couples' venous blood samples and the amniotic fluid/ chorionic villi collected from seven deafness families for prenatal diagnosis were analyzed. The cell-free DNA from maternal plasma was examined to determine if they carried the mutations of GJB2 235delC. RESULTS Three samples were found to carry the mutation of GJB2 235delC. It is in agreement with the sequencing results. The affected fetuses were suggested to take invasive procedure for confirmation. CONCLUSIONS The chip may be a potential method to screen for congenital deafness based on maternal plasma DNA.
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Affiliation(s)
- M Meng
- Department of Obstetrics, First Maternity and Infant Hospital affiliated Tongji University, Shanghai, China.
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Fang Y, Bao X, Li C, Meng M, Yuan H, Ma J, Wang Y. The research progress of diving medicine in P.R. China. ARCH MAL PROF ENVIRO 2013. [DOI: 10.1016/j.admp.2013.07.088] [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: 11/25/2022]
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Li B, Shi JB, Wang X, Meng M, Huang L, Qi XL, He B, Ye ZH. Variations and constancy of mercury and methylmercury accumulation in rice grown at contaminated paddy field sites in three Provinces of China. Environ Pollut 2013; 181:91-97. [PMID: 23838485 DOI: 10.1016/j.envpol.2013.06.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 06/13/2013] [Accepted: 06/15/2013] [Indexed: 06/02/2023]
Abstract
Many paddy fields have been contaminated by mercury (Hg) in mining areas of China. In this study, twenty-six rice cultivars and three Hg contaminated paddy fields in different geographic regions were selected for field trials and aimed to investigate the variations and similarities in total Hg (THg) and methylmercury (MeHg) accumulations in brown rice (seeds) across sites. Our results revealed widescale cultivar variation in THg (13-52 ng g(-1) at Wanshan) and MeHg (3.5-23 ng g(-1)) accumulation and %MeHg (17.7-89%) in seeds. The ability to translocate is an important factor in the levels of THg and MeHg in seed. Cultivar tended to stability in THg accumulation across sites. Some cultivars accumulated lower concentrations of both THg and MeHg in seeds at fields seriously contaminated by Hg. Present results suggest that appropriate cultivar selection is a possible way to reduce THg and MeHg accumulation in seeds of rice grown in Hg-contaminated regions.
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Affiliation(s)
- B Li
- State Key Laboratory for Bio-control and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
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Abizaid AA, Schofer J, Meng M, Witzenbichler B, Bothelho R, Costa JR, Chamie D, Elixir Medical I, Ormiston J, Verheye S. Prospective, multi-center evaluation of the desolve NX novolimus-eluting bioresorbable coronary scaffold: principal clinical and imaging endpoints. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5547] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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