scholarly journals ATR-FTIR spectrum analysis of saliva samples from COVID-19 positive patients

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Adriana Martinez-Cuazitl ◽  
Gustavo J. Vazquez-Zapien ◽  
Miguel Sanchez-Brito ◽  
Jorge H. Limon-Pacheco ◽  
Melissa Guerrero-Ruiz ◽  
...  
Keyword(s):  
Ftir Spectroscopy ◽  
Attenuated Total Reflection ◽  
Vibrational Modes ◽  
The Novel ◽  
C Reactive Protein ◽  
Spectra Analysis ◽  
Reactive Protein ◽  
Blood Tests ◽  
Biological Hazard ◽  
New Diagnosis

AbstractThe coronavirus disease 2019 (COVID-19) is the latest biological hazard for the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Even though numerous diagnostic tests for SARS-CoV-2 have been proposed, new diagnosis strategies are being developed, looking for less expensive methods to be used as screening. This study aimed to establish salivary vibrational modes analyzed by attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy to detect COVID-19 biological fingerprints that allow the discrimination between COVID-19 and healthy patients. Clinical dates, laboratories, and saliva samples of COVID-19 patients (N = 255) and healthy persons (N = 1209) were obtained and analyzed through ATR-FTIR spectroscopy. Then, a multivariate linear regression model (MLRM) was developed. The COVID-19 patients showed low SaO2, cough, dyspnea, headache, and fever principally. C-reactive protein, lactate dehydrogenase, fibrinogen, d-dimer, and ferritin were the most important altered laboratory blood tests, which were increased. In addition, changes in amide I and immunoglobulin regions were evidenced in the FTIR spectra analysis, and the MLRM showed clear discrimination between both groups. Specific salivary vibrational modes employing ATR-FTIR spectroscopy were established; moreover, the COVID-19 biological fingerprint in saliva was characterized, allowing the COVID-19 detection using an MLRM, which could be helpful for the development of new diagnostic devices.

scholarly journals ATR-FTIR Spectrum Analysis of Saliva Samples from COVID-19 Positive Patients

2021 ◽  
Author(s):  
Adriana Martinez-Cuazitl ◽  
Gustavo Vazquez-Zapien ◽  
Miguel Sanchez-Brito ◽  
Jorge Limon-Pacheco ◽  
Melissa Guerrero-Ruiz ◽  
...  
Keyword(s):  
Ftir Spectroscopy ◽  
Attenuated Total Reflection ◽  
Vibrational Modes ◽  
The Novel ◽  
Spectra Analysis ◽  
Blood Tests ◽  
Potential Indicator ◽  
Biological Hazard ◽  
New Diagnosis ◽  
Written Informed Consent

Abstract The coronavirus disease 2019 (COVID-19) is the latest biological hazard for the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Numerous diagnostic tests for SARS-CoV-2 have been used, which are expensive and require specialized personal. So, new diagnosis strategies are being developed, looking for less expensive methods which could be used as screening for better spread control. Many researchers have described the use of saliva as a potential indicator of COVID-19, and even the same patient could carry out its collection. In this sense, this study aimed to establish specific salivary vibrational modes analyzed by attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy to detect COVID-19 biological fingerprints that allow the discrimination between COVID-19 and healthy patients. Previous written informed consent, clinical dates, laboratories, and saliva samples of COVID-19 patients (n = 255) and healthy persons (n = 1209) were obtained and analyzed through ATR-FTIR spectroscopy. Then, a multivariate linear regression model (MLRM) was developed. The COVID-19 patients showed low SaO2, cough, dyspnea, headache, and fever principally. Obesity was the main comorbidity. Various laboratory blood tests were altered. In the FTIR spectra analysis, changes in amide I and immunoglobulin regions were evidenced, and the MLRM showed clear discrimination between both groups. Specific salivary vibrational modes employing ATR-FTIR spectroscopy were established; moreover, the COVID-19 biological fingerprint in saliva was characterized, allowing the detection for COVID-19 using an MLRM, once it helps to reduce the number of variables, which could be helpful in the future development of diagnostic devices in a faster and cheaper way.

scholarly journals Retrospective analysis of the clinical features of outpatients with novel coronavirus in areas outside Wuhan, China

2020 ◽  
Author(s):  
Yong-Tao Li ◽  
Mei-Lian Peng ◽  
Jia-dan Fu ◽  
Li Liu ◽  
Yong-zheng Guo ◽  
...  
Keyword(s):  
Pathogen Detection ◽  
Clinical Performance ◽  
The Novel ◽  
C Reactive Protein ◽  
Early Screening ◽  
Reactive Protein ◽  
Ct Findings ◽  
Epidemic Area ◽  
Novel Coronavirus ◽  
Lung Ct

Abstract Objective: The novel coronavirus pneumonia (COVID-19) has spread rapidly across the globe with the movement of people. How to diagnose COVID-19 quickly and accurately is a concern for all. We retrospectively assessed the clinical characteristics of patients with COVID-19 detected by outpatient screening in areas outside Wuhan, China, to guide early screening outside the epidemic area, to isolate and treat COVID-19-positive patients, and to control the spread of this virus in the region.Results: Among the 213 patients treated in the fever clinic of our hospital, 41 tested positive for novel coronavirus (2019-nCoV) and 172 were negative. Among the positive patients, 13 (31.7%) of the patients had been to Wuhan, while 28 (68.3%) had not been to Wuhan. There were 4 cases of clustering occurrence. The main symptoms exhibited by COVID-19-positive patients were fever (87.8%), cough (68.3%), and expectoration (34.1%). The C-reactive protein (CRP) levels were increased in 35 (85.3%) positive patients; the hydroxybutyrate dehydrogenase in the myocardial zymogram was increased in 22 positive patients (53.6%) and 38 negative patients (22.1%); computed tomography (CT) findings revealed lung lesions in all 41 positive patients (100%).Conclusion: We classified the patient population and analyzed the data to understand the early clinical performance of COVID-19. Our research illustrate that screening for COVID-19 outside Wuhan should focus on early symptoms such as fever and cough, in combination with lung CT findings, epidemiological history, and sputum pathogen detection to determine whether patients need further isolation.

scholarly journals The impact of COVID-19 pandemic on the treatment of acute appendicitis in China

2021 ◽  
Author(s):  
ZhiXue Zheng ◽  
Jing Tao Bi ◽  
Ya Qi Liu ◽  
Xuan Cai
Keyword(s):  
Acute Appendicitis ◽  
White Blood Cells ◽  
Onset Time ◽  
The Novel ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
Number Of Patients ◽  
Hospital Visits ◽  
Novel Coronavirus ◽  
The Impact

Abstract Objective This research aims to analyze the impact of the novel coronavirus pandemic on the hospital visits of patients with acute appendicitis. Methods The retrospective analysis was designed to look at the treatment of acute appendicitis in the Department of General Surgery in Beijing Jishuitan Hospital before and during the COVID-19 pandemic (2019–2020). Data was analyzed by the numbers of patients, sex, age, onset time, fever or not, laboratory examination, imaging test, and treatment. And we analyzed the differences between the “pre-COVID group” and “during-COVID group”. Results Compared with the year 2019, the number of acute appendicitis patients has diminished substantially during the COVID-19 pandemic (2020), but the number elevated with the control of the pandemic. Even if we did not find the differences of the treatment before and during the pandemic (P = 0.932), the onset time to emergency was significantly longer (P < 0.001), and more patients had showed fever (P < 0.001) during the COVID-19 pandemic. And the total number of white blood cells and C reactive protein level were significantly higher in 2020 than those in 2019 (P = 0.006, 0.003). And the same result was found in patients with appendiceal fecalith (P = 0.047). Conclusion During the pandemic of the new coronavirus pneumonia, the number of patients with acute appendix treatment dropped significantly, mainly because it took longer than before, and the condition was more severe. It can be seen that the new coronary pneumonia has a great impact on the patients’ medical treatment behavior, and the active prevention and treatment of the new coronavirus pneumonia is currently an important and urgent issue.

scholarly journals Physician Global Assessments or Blood tests do not Predict Mucosal Disease Activity in Ulcerative Colitis

2014 ◽  
Vol 28 (6) ◽  
pp. 325-329 ◽  
Author(s):  
Mayur Brahmania ◽  
Charles N Bernstein
Keyword(s):  
Ulcerative Colitis ◽  
Disease Activity ◽  
Complete Blood Count ◽  
Mucosal Healing ◽  
Physician Global Assessment ◽  
C Reactive Protein ◽  
Predictive Values ◽  
Laboratory Parameters ◽  
Reactive Protein ◽  
Blood Tests

BACKGROUND: Mucosal healing has been proposed as the therapeutic end point in the treatment of patients with ulcerative colitis (UC).OBJECTIVE: To investigate the relationship between physician global assessment (PGA) and laboratory blood tests (complete blood count, ferritin, C-reactive protein, albumin) and endoscopic findings in UC to determine whether they could be adequate surrogates for endoscopy.METHODS: A retrospective chart review of patients known to have UC from July 2008 to November 2012 was performed at the Health Sciences Centre, Winnipeg, Manitoba. Patients included individuals with UC who underwent colonoscopy within one month of clinic assessment. Blood tests were standard at the time of colonoscopy. Patients presenting through the emergency department, those with colonoscopies performed outside the authors’ institution, or whose colonoscopies and clinical assessments were undertaken more than one month apart were excluded. The PGA was used to determine disease activity in patients before colonoscopy. The Ulcerative Colitis Endoscopic Index of Severity, a validated scoring system to rate endoscopic disease severity in ulcerative colitis, was adapted.RESULTS: A total of 154 patients (mean [± SD] age 44±15.7 years) with UC were identified including 82 (53%) men. Mean hemoglobin level was 139 g/L, mean platelet level was 296×109/L, mean ferritin level was 102 μg/L, mean C-reactive protein level was 10 mg/L and mean albumin level was 40 g/L. Using endoscopy as the ‘gold standard’ for assessing UC activity (moderate-severe), abnormalities in laboratory parameters and PGA were both highly specific but not sensitive for identifying individuals with at least moderately active endoscopic disease. The PGA had higher positive and negative predictive values than the laboratory parameters.CONCLUSION: Neither blood tests nor PGA could replace endoscopy for assessing mucosal healing. When patients experienced active symptoms and abnormal serum markers, they were highly likely to have abnormal endoscopy. However, inactive symptoms or normal laboratory values did not preclude having active endoscopic disease.

scholarly journals Mesenteric panniculitis: diagnostic precision

2018 ◽  
pp. bcr-2017-223977
Author(s):  
Domingos Sousa ◽  
Ana Verónica Varela ◽  
Margarida Viana Coelho ◽  
Catarina Jorge
Keyword(s):  
Clinical Symptoms ◽  
Blood Cultures ◽  
Histopathological Analysis ◽  
Mesenteric Panniculitis ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
Blood Tests ◽  
Mesenteric Fat ◽  
Loss Of Appetite ◽  
Protein Serum

A previously healthy 74-year-old woman was admitted with vespertine fever, tremors, shivers and loss of appetite within the previous month. Blood tests revealed an elevated C reactive protein serum level. Serologies for infection were negative. Blood cultures grew no organisms. Colonoscopy revealed normal findings. CT showed typical findings of mesenteric panniculitis with infiltration of mesenteric fat that was circumscribed by hyperattenuating capsule and contained enlarged homogenous lymph nodes. The histopathological analysis from mesenterium revealed non-specific signs of chronic inflammation. On institution of prednisolone, the clinical symptoms subsided, and we replaced it with azathioprine after 1 month. After 12 months of therapy, the patient remained asymptomatic, normalised the serological inflammatory markers and repeat CT revealed normal mesenteric fat.

scholarly journals Clinical Characteristics of COVID-19 and the Value of Mulbsta Scoring System in Prognosis Evaluation

2020 ◽  
Author(s):  
Chao Wang ◽  
Zhixiu Luo ◽  
Junyi Wu ◽  
Jie Zhou ◽  
Yahang Lin ◽  
...  
Keyword(s):  
Scoring System ◽  
Evaluation System ◽  
Disease Classification ◽  
The Novel ◽  
C Reactive Protein ◽  
Average Value ◽  
Reactive Protein ◽  
Severity Of The Disease ◽  
And Gender ◽  
Novel Coronavirus

Abstract BackgroundCOVID-19, a worldwideinfectious disease, has killed more than 420000 people, whichis extremely harmful.MethodsIn this single-center retrospective study, we included the novel coronavirus pneumonia confirmed in our hospital. This study collected the basic information andclinical examination features.ResultsThe enrolled 704 patients were affirmed infected with 2019-nCoV by the test of throat swabs. There are 334 men and 369 women, and gender, age, combined with basic diseasesare distinct in diverse disease classification (p<0.05). From the symptom analysis, the proportion of fever over 38 degrees, dyspnea, fatigue, poor appetite and other symptoms is diverse in different types of diseases (p<0.05). As the severity of the disease increases, the median lymphocyte count decreases, C-reactive protein increase, erythrocyte sedimentation rateincrease, albumin decrease, pleural effusion increase, D-Dimer and NT-proBNP increase significantly (p<0.05).As the disease severity increases, the average value of MuLBSTA score obviously ascend (p<0.05), MuLBSTA scoring system predicts novel coronavirus pneumonia patients' prognosis is still insufficient, and may require additional indicators including anorexia, fatigue, C reactive protein, etc (p<0.05).ConclusionThe MuLBSTA evaluation system has certain value for the evaluation of the disease, but it needs to be improved.

scholarly journals A prospective study of screening for musculoskeletal pathology in the child with a limp or pseudoparalysis using erythrocyte sedimentation rate, C-reactive protein and MRI

2018 ◽  
Vol 12 (4) ◽  
pp. 398-405 ◽  
Author(s):  
P. D. Mitchell ◽  
A. Viswanath ◽  
N. Obi ◽  
A. Littlewood ◽  
M. Latimer
Keyword(s):  
Erythrocyte Sedimentation Rate ◽  
Sedimentation Rate ◽  
Lower Limbs ◽  
Positive Finding ◽  
C Reactive Protein ◽  
Level Of Evidence ◽  
Reactive Protein ◽  
Blood Tests ◽  
Erythrocyte Sedimentation ◽  
Musculoskeletal Pathology

Purpose To determine if the detection of musculoskeletal pathology in children with a limp or acute limb disuse can be optimized by screening with blood tests for raised inflammatory markers, followed by MRI. Methods This was a prospective observational study. Entry criteria were children (0 to 16 years of age) presenting to our emergency department with a non-traumatic limp or pseudoparalysis of a limb, and no abnormality on plain radiographs. Erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) blood tests were performed. Children with ESR > 10 mm/hr or CRP > 10 mg/L underwent a MRI scan. When the location of the pathology causing the limp was clinically unclear, screening images (Cor t1 and Short Tau Inversion Recovery) of both lower limbs from pelvis to ankles (‘legogram’) was undertaken. Data was gathered prospectively from 100 consecutive children meeting the study criteria. Results In all, 75% of children had a positive finding on their MRI. A total of 64% of cases had an infective cause for their symptoms (osteomyelitis, septic arthritis, pyomyositis, fasciitis, cellulitis or discitis). A further 11% had positive findings on MRI from non-infective causes (juvenile idiopathic arthritis, cancer or undisplaced fracture). The remaining 25% had either a normal scan or effusion due to transient synovitis. ESR was a more sensitive marker than CRP in infection, since ESR was raised in 97%, but CRP in only 70%. Conclusion In our opinion MRI imaging of all children with a limp and either raised ESR or CRP is a sensitive method to minimize the chance of missing important pathology in this group, and is an effective use of MRI resources. We advocate the use of both blood tests in conjunction. Level of Evidence Level II

scholarly journals White cell counts, C-Reactive Protein and appendicitis – What is the role of pre-operative blood tests in assisting in the diagnosis?

2013 ◽  
Vol 11 (8) ◽  
pp. 707-708
Author(s):  
Adam Tucker ◽  
Keren Sloan ◽  
Ian Garstin ◽  
Stephen Dace ◽  
Rejina Varghis
Keyword(s):  
White Cell ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
Blood Tests ◽  
Cell Counts
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