scholarly journals Human adenovirus infection of 53 children in Jilin Province of China: the clinical and bronchoscopic features

2019 ◽  
Author(s):  
Qiao Qian ◽  
Chunyan Li ◽  
Fanzheng PhD ◽  
Yuhan Ma ◽  
Meiying Piao ◽  
...  
Keyword(s):  
Clinical Symptoms ◽  
Severe Pneumonia ◽  
Human Adenovirus ◽  
Lavage Fluid ◽  
Jilin Province ◽  
Next Generation ◽  
Next Generation Sequencing Technology ◽  
Distal Airway ◽  
Uneven Ventilation

Abstract Abstract Background: Human adenoviruses (HAdV) has many kinds of serotypes, of which type 7 can cause severe respiratory disease, especially pneumonia. From Oct 1st to Jan 31st a little outbreak of this type occured in Jilin province of China and led to quite severe pneumonia, therefore we did this retrospective study to summarize the clinical and bronchoscopic features in order to help pediatric physicians get better view of the infection. Methods: Nasopharyngeal swabs or bronchoalveolar lavage fluid (BALF) were collected from pediatric patients who were diagnosed with pneumonia in our department of the First hospital of Jilin University from Oct 1st 2018 to Jan 31st 2019. Then use immunofluorescence method (detect the nasopharyngeal swabs) or the next-generation sequencing technology (detect the BALF) to clarify the pathogen. Results: 53 children were confirmed to be infected with the HAdV, the mean age of infected children was 39.5(39.5±25.09）months, 56.6% were less than 36 months. The ratio rate between male and female was 1.3:1. Co-infection was quite common (75%), and happened in older group(p=.018). Bronchoscope was performed on 37 children, 45.9%(n=17) had micro-sputum-bolt in the small distal airway or in the BALF. With the help of the next-generation sequence technology, 11 were confirmed infected with HAdV-7. We followed up the patients for 6 months, 12 by CT and 41 by telephone call. In the CT follow-up group, 8 had “Mosaic sign” on lung CT, and 4 shows mild uneven ventilation. In telephone follow-up group 31 recovered well and had no symptoms, 10 had cough and tachypnea after moderate level of daily activities. Conclusion: A) Compared with previous data in our hospital, in the winter this year, a little outbreak happened in Jilin province of China. B) We infer that HadV-7 may be the prevalent strain. C) Before we get accurate etiology diagnosis, combining with the clinical symptoms, accessory results, the micro-sputum-bolt seen in the BALF when doing the electronic bronchoscope can give us some hints of HAdV infection.

scholarly journals Actinomyces as a Cause of Unexplained Fever Diagnosed by Next-Generation Sequencing: Case Report and Review

2021 ◽  
Author(s):  
Xiu Huang ◽  
Na Du ◽  
jiaxue He ◽  
yujun Du
Keyword(s):  
Next Generation Sequencing ◽  
Laboratory Data ◽  
Lavage Fluid ◽  
Next Generation ◽  
Intermittent Fever ◽  
Thoracic Actinomycosis ◽  
Sputum Production ◽  
Unexplained Fever ◽  
Generation Sequencing

Abstract Background: Actinomycosis is a rare cause of unexplained origin fever (FUO). The NGS, particularly in cases of FUO in conventional microbiology, is a promising and advantageous technology for earlier diagnosis and more success. It gives new insights in the management of FUO, especially in infectious diseases.Case presentation: We present a case of a 71-year-old woman who had FUO that the etiology was endobronchial actinomycosis eventually diagnosed by next-generation sequencing of bronchoalveolar lavage fluid. She was admitted to the our department with intermittent fever up to 40.0℃, chills, cough with white sputum, chest distress and slightly dyspnea over one month. According to special clinical course and laboratory data of the patient, she was given intravenous sulbenicillin sodium for 11 days and oral amoxicillin at 500 mg every 8 h for another 1 month. When she returned for follow-up, she reported a notable improvement in her cough, dyspnea, sputum production and fever that was completely absent.Conclusion: In obscure causes of FUO, clinicians should consider the possibility of thoracic actinomycosis and actively use next-generation sequencing to help diagnose.

scholarly journals Blood and Bronchoalveolar Lavage Fluid Metagenomic Next-Generation Sequencing in Pneumonia

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Xu Chen ◽  
Shuizi Ding ◽  
Cheng Lei ◽  
Jieli Qin ◽  
Ting Guo ◽  
...  
Keyword(s):  
Next Generation Sequencing ◽  
Bronchoalveolar Lavage ◽  
Bronchoalveolar Lavage Fluid ◽  
Human Adenovirus ◽  
Lavage Fluid ◽  
Diagnostic Value ◽  
Next Generation ◽  
Barr Virus ◽  
Bacteria And Fungi ◽  
Generation Sequencing

Background. Metagenomic next-generation sequencing (mNGS) has made a revolution in the mode of pathogen identification. We decided to explore the diagnostic value of blood and bronchoalveolar lavage fluid (BALF) as mNGS samples in pneumonia. Methods. We retrospectively reviewed 467 mNGS results and assessed the diagnostic performance of paired blood and BALF mNGS in 39 patients with pneumonia. Results. For bacteria and fungi, 16 patients had culture-confirmed pathogen diagnosis, while 13 patients were culture-negative. BALF mNGS was more sensitive than blood mNGS (81.3% vs. 25.0%, p=0.003), and the specificity in BALF and blood mNGS was not statistically significant different (76.9% vs. 84.6%, p=0.317). For 10 patients without culture test, treatments were changed in 2 patients. For viruses, Epstein-Barr virus was positive in blood mNGS in 9 patients. Human adenovirus was detected in both BALF and blood mNGS in 3 patients. Conclusion. Our study suggests that BALF mNGS is more sensitive than blood mNGS in detecting bacteria and fungi, but blood also has advantages to identify the pathogens of pneumonia, especially for some viruses.

scholarly journals Epidemiology of Adenovirus Pneumonia and Risk Factors for Bronchiolitis Obliterans in Children During an Outbreak in Jilin, China

2021 ◽  
Vol 9 ◽  
Author(s):  
Xiuhua Yu ◽  
Yucong Ma ◽  
Yang Gao ◽  
Hailong You
Keyword(s):  
Risk Factors ◽  
Respiratory Failure ◽  
Acute Respiratory Failure ◽  
Bronchiolitis Obliterans ◽  
Pediatric Patients ◽  
Severe Pneumonia ◽  
Human Adenovirus ◽  
Jilin Province ◽  
Potential Risk Factors ◽  
Epidemiological Characteristics

Background: Jilin Province, located in northeastern China, recently experienced a human adenovirus (HAdV) epidemic. Few studies involving hospitalized pediatric patients with pneumonia caused by HAdV in our region exist. HAdV pneumonia can lead to severe long-term respiratory sequelae, such as post-infectious bronchiolitis obliterans (PIBO), which has a poor prognosis and greatly influences the quality of life of pediatric patients. However, studies on the risk factors for PIBO are limited.Objective: To describe the HAdV pneumonia prevalence and determine potential risk factors for PIBO development among hospitalized children in Jilin Province, China.Methods: The data of 187 children with HAdV pneumonia (10 months−12 years old) admitted to the First Hospital of Jilin University during an outbreak between October 2018 and January 2020 were retrospectively studied. We analyzed the epidemiological characteristics of HAdV pneumonia, focusing on severe HAdV pneumonia (66 cases). The risk factors for BO development were determined by comparing the demographic and clinical data of the BO and non-BO groups.Results: The largest number of HAdV pneumonia cases occurred in January 2019 (severe n = 18, general n = 21), followed by December 2018 (severe n = 14, general n = 11), June 2019 (general n = 17), July 2019 (general, n = 14), and May 2019 (general, n = 13). In total, 91.98% of the children with HAdV pneumonia were <6 years old (172/187), and 50% of the pediatric patients with severe HAdV pneumonia were <2 years old (33/66). We found that 30.3% of the severe cohort developed BO (20/66), and the strongest independent risk factors for PIBO were persistent wheezing (OR 181.776, 95% CI, 3.385–9,761.543) and acute respiratory failure (OR 51.288, 95% CI, 1.858–1,415.441) during a severe pneumonia episode.Conclusions: The largest number of HAdV pneumonia cases, especially severe cases, occurred in winter in Northeast China, followed by summer. The majority of children admitted with HAdV pneumonia were <6 years old, and half of severe HAdV pneumonia patients were <2 years old. Children who had persistent wheezing or acute respiratory failure during the acute phase of severe HAdV pneumonia were prone to the development of BO.

scholarly journals Case Report: Potential Role of Corticosteroids in the Management of Post-COVID-19 Pneumonia

2021 ◽  
Vol 8 ◽  
Author(s):  
Houari Aissaoui ◽  
Anaïs Eskenazi ◽  
Valentin Suteau ◽  
Antoine Adenis ◽  
Kinan Drak Alsibai
Keyword(s):  
Oxygen Therapy ◽  
Clinical Symptoms ◽  
Severe Pneumonia ◽  
Symptomatic Improvement ◽  
Infectious Period ◽  
Exertional Dyspnea ◽  
High Flow Oxygen ◽  
Pulmonary Superinfection

Certain patients who recover from severe pneumonia due to coronavirus disease 2019 (COVID-19) remain symptomatic in the post-infectious period, either clinically, radiologically, or respiratory. The post-COVID-19 period is characterized by clinical symptoms of varying duration from one subject to another and does not seem to depend on the severity of initial pneumonia. The persisting inflammatory and/or immune reactions in the post-COVID-19 period may play a role in the development of pulmonary lesions. Here, we report the case of a 61-year-old man with severe COVID-19 pneumonia, complicated by acute respiratory distress syndrome and pulmonary embolism, which required the patient's admission to the intensive care unit and high-flow oxygen therapy. The patient was hospitalized for 23 days for the management of his severe COVID-19 pneumonia. Afterwards, he was discharged home following a negative SARS-CoV-2 PCR test. The post-COVID-19 period was characterized by a complex respiratory symptomatology associating cough, resting dyspnea, and exertional dyspnea requiring oxygen therapy for several weeks. Surprisingly, the follow-up chest CT scan performed 4 weeks after discharge revealed bilateral interstitial lung lesions. After ruling out pulmonary superinfection, the patient was treated with oral corticosteroid for 3 months at a digressive dose. In our case, the use of corticosteroid therapy in the post-COVID19 phase had improved the outcome of the lung disease. These benefits are characterized by a rapid symptomatic improvement, accelerated repair of pulmonary images, rapid oxygen withdrawal, and rapid return to daily activities.

Development and Application of Computational Methods in Phage Display Technology

2020 ◽  
Vol 26 (42) ◽  
pp. 7672-7693 ◽  
Author(s):  
Bifang He ◽  
Anthony Mackitz Dzisoo ◽  
Ratmir Derda ◽  
Jian Huang
Keyword(s):  
Phage Display ◽  
Computational Methods ◽  
Peptide Ligands ◽  
Next Generation ◽  
Phage Display Technology ◽  
Next Generation Sequencing Technology ◽  
Screening Experiments ◽  
Display Technology ◽  
Comprehensive Search ◽  
Generation Sequencing

Background: Phage display is a powerful and versatile technology for the identification of peptide ligands binding to multiple targets, which has been successfully employed in various fields, such as diagnostics and therapeutics, drug-delivery and material science. The integration of next generation sequencing technology with phage display makes this methodology more productive. With the widespread use of this technique and the fast accumulation of phage display data, databases for these data and computational methods have become an indispensable part in this community. This review aims to summarize and discuss recent progress in the development and application of computational methods in the field of phage display. Methods: We undertook a comprehensive search of bioinformatics resources and computational methods for phage display data via Google Scholar and PubMed. The methods and tools were further divided into different categories according to their uses. Results: We described seven special or relevant databases for phage display data, which provided an evidence-based source for phage display researchers to clean their biopanning results. These databases can identify and report possible target-unrelated peptides (TUPs), thereby excluding false-positive data from peptides obtained from phage display screening experiments. More than 20 computational methods for analyzing biopanning data were also reviewed. These methods were classified into computational methods for reporting TUPs, for predicting epitopes and for analyzing next generation phage display data. Conclusion: The current bioinformatics archives, methods and tools reviewed here have benefitted the biopanning community. To develop better or new computational tools, some promising directions are also discussed.

A Novel Method for Microsatellite Instability Detection by Liquid Biopsy Based on Next- Generation Sequencing

2020 ◽  
Vol 15 ◽  
Author(s):  
Zheng Jiang ◽  
Hui Liu ◽  
Siwen Zhang ◽  
Jia Liu ◽  
Weitao Wang ◽  
...  
Keyword(s):  
Next Generation Sequencing ◽  
Microsatellite Instability ◽  
Liquid Biopsy ◽  
Tumor Tissue ◽  
High Sensitivity ◽  
Next Generation ◽  
Tissue Samples ◽  
Next Generation Sequencing Technology ◽  
Medication Selection ◽  
Generation Sequencing

Background: Microsatellite instability (MSI) is a prognostic biomarker used to guide medication selection in multiple cancers, such as colorectal cancer. Traditional PCR with capillary electrophoresis and next-generation sequencing using paired tumor tissue and leukocyte samples are the main approaches for MSI detection due to their high sensitivity and specificity. Currently, patient tissue samples are obtained through puncture or surgery, which causes injury and risk of concurrent disease, further illustrating the need for MSI detection by liquid biopsy. Methods: We propose an analytic method using paired plasma/leukocyte samples and MSI detection using next-generation sequencing technology. Based on the theoretical progress of oncogenesis, we hypothesized that the microsatellite site length in plasma equals the combination of the distribution of tumor tissue and leukocytes. Thus, we defined a window-judgement method to identify whether biomarkers were stable. Results: Compared to traditional PCR as the standard, we evaluated three methods in 20 samples (MSI-H:3/MSS:17): peak shifting method using tissue vs. leukocytes, peak shifting method using plasma vs. leukocytes, and our method using plasma vs. leukocytes. Compared to traditional PCR, we observed a sensitivity of 100%, 0%, and 100%, and a specificity of 100.00%, 94.12%, and 88.24%, respectively. Conclusion: Our method has the advantage of possibly detecting MSI in a liquid biopsy and provides a novel direction for future studies to increase the specificity of the method.

Scoring System for the Diagnosis of COVID-19

2020 ◽  
Vol 13 (1) ◽  
pp. 413-414 ◽  
Author(s):  
Mohamed Farouk Allam
Keyword(s):  
Scoring System ◽  
Clinical Symptoms ◽  
False Negative ◽  
Nasopharyngeal Swab ◽  
Rt Pcr ◽  
Pcr Assay ◽  
Negative Results ◽  
False Negative Results ◽  
Symptoms And Signs

Due to the international spread of COVID-19, the difficulty of collecting nasopharyngeal swab specimen from all suspected patients, the costs of RT-PCR and CT, and the false negative results of RT-PCR assay in 41% of COVID-19 patients, a scoring system is needed to classify the suspected patients in order to determine the need for follow-up, home isolation, quarantine or the conduction of further investigations. A scoring system is proposed as a diagnostic tool for suspected patients. It includes Epidemiological Evidence of Exposure, Clinical Symptoms and Signs, and Investigations (if available). This scoring system is simple, could be calculated in a few minutes, and incorporates the main possible data/findings of any patient.

scholarly journals Chinese Herbal Medicine Dingji Fumai Decoction for Ventricular Premature Contraction: A Real-World Trial

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Bo Liang ◽  
Fei-Hu Zou ◽  
Ling Fu ◽  
Hui-Ling Liao
Keyword(s):  
Herbal Medicine ◽  
Chinese Herbal Medicine ◽  
Clinical Symptoms ◽  
Medication Compliance ◽  
Controlled Trial ◽  
Ventricular Premature Contraction ◽  
Traditional Chinese Medicine Syndrome ◽  
Chinese Herbal ◽  
Double Blinded

Background. Chinese herbal medicine Dingji Fumai Decoction (DFD) is widely clinically used for ventricular premature contraction (VPC). This real-word trial was designed to assess the safety and effectiveness of DFD for VPC. Methods. This was a double-blinded, randomized placebo-controlled trial. Patients with VPC were randomized (1 : 1) to treatment with DFD combined with metoprolol (DFD arm) or metoprolol combined with placebo (MET arm). A primary end point was a composite of clinical symptoms and signs determined by the traditionalChinese medicine syndrome score and the number of VPC determined by the Holter examination. Second outcomes were adverse events, medication compliance, and laboratory examination. Results. 144 patients were randomized to DFD arm (76 patients) or MET arm (68 patients), and 136 cases (71 in DFD arm and 65 in MET arm) finally completed this trial. After a 12-week follow-up, DFD arm significantly decreased traditional Chinese medicine syndrome score and the number of VPC compared with MET arm (P=0.003 and 0.034, respectively). There was no adverse drug effect and patient medication compliance was good. Conclusions. Superiority with DFD arm for VPC was demonstrated over MET arm for both the safety and effectiveness end points.

scholarly journals Treatment and therapeutic strategies for pituitary apoplexy in pregnancy: a case series

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Yuya Kato ◽  
Yoshikazu Ogawa ◽  
Teiji Tominaga
Keyword(s):  
Pituitary Apoplexy ◽  
Clinical Symptoms ◽  
Case Series ◽  
Optimal Timing ◽  
Presenting Symptoms ◽  
Pathological Evaluation ◽  
Mother And Child ◽  
Life Threatening ◽  
In Pregnancy

Abstract Background Pregnancy is a known risk factor for pituitary apoplexy, which is life threatening for both mother and child. However, very few clinical interventions have been proposed for managing pituitary apoplexy in pregnancy. Case presentation We describe the management of three cases of pituitary apoplexy during pregnancy and review available literature. Presenting symptoms in our case series were headache and/or visual disturbances, and the etiology in all cases was hemorrhage. Conservative therapy was followed until 34 weeks of gestation, after which babies were delivered by cesarean section with prophylactic bolus hydrocortisone supplementation. Tumor removal was only electively performed after delivery using the transsphenoidal approach. All three patients and their babies had a good clinical course, and postoperative pathological evaluation revealed that all tumors were functional and that they secreted prolactin. Conclusions Although the mechanism of pituitary apoplexy occurrence remains unknown, the most important treatment strategy for pituitary apoplexy in pregnancy remains adequate hydrocortisone supplementation and frequent hormonal investigation. Radiological follow-up should be performed only if clinical symptoms deteriorate, and optimal timing for surgical resection should be discussed by a multidisciplinary team that includes obstetricians and neonatologists.

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