scholarly journals RURAL HOSPITAL CORRELATION OF CLINICAL PRESENTATION, HISTOPATHOLOGY, AND POLYMERASE CHAIN REACTION FOR GENITAL TUBERCULOSIS DIAGNOSIS

2021 ◽  
Vol 10 (4) ◽  
pp. 3474-3478
Author(s):  
Swati Garg
Keyword(s):  
Early Diagnosis ◽  
Early Stage ◽  
High Sensitivity ◽  
Diagnostic Methods ◽  
Genital Tuberculosis ◽  
Operative Laparoscopy ◽  
Tubal Patency ◽  
Patient Reports ◽  
Epithelioid Granuloma ◽  
Peritoneal Biopsy

In India, vaginal tuberculosis (FGTB) is a common cause of infertility, but diagnosis is difficult because of the form of the disease of people in need. Traditional diagnostic methods include the detection of rapid bacilli acid in endometrial or peritoneal biopsy, epithelioid granuloma biopsy, or a positive Expert type in biopsy, although this is only available in a small percentage of cases, leaving patients many are not available. Diagnosis of GTB by PCR along with histopathological findings leads to high sensitivity and specificity. So, both diagnostic and operative laparoscopy and hysteroscopy are the modalities essential for management of genital TB in infertile women. This review discusses various diagnostic modalities including endometrial or peritoneal biopsy to detect epithelioid granuloma on microscopy, role of PCR for GTB and correlation of two for early diagnosis of genital tuberculosis so that management will be started at early stage which can prevent patient from getting permanent damage to organs. Tuberculosis being endemic in counties likes India; it is often a leading cause of infertility. Early diagnosis is crucial because, by the time patient reports with infertility, already the damage has started and reverting tubal patency is almost impossible. Early diagnosis typically fails in developing countries, primarily because there are no pathognomonic signs of the disease and either poor sensitivity or procedurally invasive diagnostic methods are in use.

scholarly journals Vibrational Spectroscopy in Assessment of Early Osteoarthritis—A Narrative Review

2021 ◽  
Vol 22 (10) ◽  
pp. 5235
Author(s):  
Chen Yu ◽  
Bing Zhao ◽  
Yan Li ◽  
Hengchang Zang ◽  
Lian Li
Keyword(s):  
Early Diagnosis ◽  
Vibrational Spectroscopy ◽  
Near Infrared ◽  
Early Stage ◽  
Diagnostic Methods ◽  
Research Progress ◽  
Nondestructive Technique ◽  
Promising Tool ◽  
Detection Technology ◽  
Early Oa

Osteoarthritis (OA) is a degenerative disease, and there is currently no effective medicine to cure it. Early prevention and treatment can effectively reduce the pain of OA patients and save costs. Therefore, it is necessary to diagnose OA at an early stage. There are various diagnostic methods for OA, but the methods applied to early diagnosis are limited. Ordinary optical diagnosis is confined to the surface, while laboratory tests, such as rheumatoid factor inspection and physical arthritis checks, are too trivial or time-consuming. Evidently, there is an urgent need to develop a rapid nondestructive detection method for the early diagnosis of OA. Vibrational spectroscopy is a rapid and nondestructive technique that has attracted much attention. In this review, near-infrared (NIR), infrared, (IR) and Raman spectroscopy were introduced to show their potential in early OA diagnosis. The basic principles were discussed first, and then the research progress to date was discussed, as well as its limitations and the direction of development. Finally, all methods were compared, and vibrational spectroscopy was demonstrated that it could be used as a promising tool for early OA diagnosis. This review provides theoretical support for the application and development of vibrational spectroscopy technology in OA diagnosis, providing a new strategy for the nondestructive and rapid diagnosis of arthritis and promoting the development and clinical application of a component-based molecular spectrum detection technology.

scholarly journals Bean extract-based gargle for efficient diagnosing COVID-19 at early-stage using rapid antigen tests: a clinical, prospective, diagnostic study

2021 ◽  
Author(s):  
Joseph Kwon ◽  
Euna Ko ◽  
Se-Young Cho ◽  
Young-Ho Lee ◽  
Sangmi Jun ◽  
...  
Keyword(s):  
Early Diagnosis ◽  
Early Stage ◽  
Medical Center ◽  
High Sensitivity ◽  
University Hospital ◽  
Receptor Binding Domain ◽  
Healthy Individuals ◽  
Rt Pcr ◽  
Self Testing ◽  
National University

Importance: The antigen-based rapid diagnostic test (Ag-RDT), using saliva specimens, is fast, non-invasive and suitable for SARS-CoV-2 self-testing, unlike nasopharyngeal swab (NPS) testing. Objective: To assess the diagnostic sensitivity of a novel Beanguard gargleTM (BG)-based virus detection method for early diagnosis of COVID-19. Design: This clinical trial was conducted at Gunsan Medical Center, Namwon Medical Center, and Jeonbuk National University Hospital, between May 7 and July 7, 2021. Setting: Paired NPS and BG-based saliva specimens collected from COVID-19 patients and healthy individuals were analyzed using NPS-RT-PCR, BG-RT-PCR, and BG-Ag-RDTs. Participants: The study comprised 102 COVID-19-positive patients hospitalized after governmental screening process and 100 healthy individuals. Forty-five COVID-19 patients were sampled within 6 days of illness and 57 within 7–15 days; 27 were categorized as asymptomatic and 75, as symptomatic. Eight and 2 patients carried the SARS-CoV-2 Alpha and Delta variants, respectively. Intervention: The diagnostic performances of BG-Ag-RDT, BG-RT-PCR, and NPS-RT-PCR for detecting SARS-CoV-2 were compared. Main outcomes: The sensitivities of BG-Ag-RDT and BG-RT-PCR towards salivary viral detection were highly concordant, with no discrimination between symptomatic, asymptomatic, or SARS-CoV-2 variant cases. Results: Among total participants (mean age, 43.7 years), 51% were women. BG-Ag-RDTs showed high sensitivity (97.8%, [95% CI, 88.4% to 99.6%]) and specificity (100%, [95% CI, 96.3% to 100%) in 45 patients within 6 days of illness and could detect all cases of SARS-CoV-2 Alpha and Delta variants. In 11 asymptomatic early-stage cases, both BG-Ag-RDTs and BG-RT-PCR showed excellent sensitivity and specificity of 100% (95% CI, 74.1% to 100% and 95% CI, 20.7% to 100%, respectively). The interaction between SARS-CoV-2 spike proteins and truncated canavalin, an active ingredient from bean extract (BE) and the ultrastructural features of SARS-CoV-2 particles coated with BE were observed. The detachment of the SARS-CoV-2 receptor-binding domain from hACE2 increased as the BE concentration increased, allowing the release of the virus from hACE2 for early diagnosis. Conclusions and Relevance: Using BG-based saliva remarkably enhances the Ag-RDT diagnostic performance as an alternative to NPS and enables rapid and accurate COVID-19 self-testing and mass screening, supporting efficient COVID-19 management. Trial Registration: KCT0006438 Design: This clinical trial was conducted at Gunsan Medical Center, Namwon Medical Center, and Jeonbuk National University Hospital, between May 7 and July 7, 2021. Setting: Paired NPS and BG-based saliva specimens collected from COVID-19 patients and healthy individuals were analyzed using NPS-RT-PCR, BG-RT-PCR, and BG-Ag-RDTs. Participants: The study comprised 102 COVID-19-positive patients hospitalized after government screening and 100 healthy individuals. Forty-five COVID-19 patients were sampled within 6 days of illness and 57 within 7–15 days; 27 were categorized as asymptomatic and 75, as symptomatic. Eight and 2 patients carried the SARS-CoV-2 Alpha and Delta variants, respectively. Intervention: The diagnostic performances of BG-Ag-RDT, BG-RT-PCR, and NPS-RT-PCR for detecting SARS-CoV-2 were compared. Main outcomes: The sensitivities of BG-Ag-RDT and BG-RT-PCR towards salivary viral detection were highly concordant, with no discrimination between symptomatic, asymptomatic, or SARS-CoV-2 variant cases. Results: Among total participants (mean age, 43.7 years), 51% were women. BG-Ag-RDTs showed high sensitivity (97.8%, [95% CI, 88.4% to 99.6%]) and specificity (100%, [95% CI, 96.3% to 100%) in 45 patients within 6 days of illness and could detect all cases of SARS-CoV-2 Alpha and Delta variants. In 11 asymptomatic early-stage cases, both BG-Ag-RDTs and BG-RT-PCR showed excellent sensitivity and specificity of 100% (95% CI, 74.1% to 100% and 95% CI, 20.7% to 100%, respectively). The interaction between SARS-CoV-2 spike proteins and truncated canavalin, an active ingredient from bean extract (BE) and the ultrastructural features of SARS-CoV-2 particles coated with BE were observed. The detachment of the SARS-CoV-2 receptor-binding domain from hACE2 increased as the BE concentration increased, allowing the release of the virus from hACE2 for early diagnosis. Conclusions and Relevance: Using BG-based saliva remarkably enhances the Ag-RDT diagnostic performance as an alternative to NPS and enables rapid and accurate COVID-19 self-testing and mass screening, supporting efficient COVID-19 management.

scholarly journals Use of high-sensitivity cardiac troponin I levels for early diagnosis of myocardial injury after neonatal asphyxia

2019 ◽  
Vol 47 (7) ◽  
pp. 3234-3242 ◽  
Author(s):  
Li Jiang ◽  
Yuning Li ◽  
Zhi Zhang ◽  
Lixing Lin ◽  
Xiaoli Liu
Keyword(s):  
Early Diagnosis ◽  
Cardiac Troponin ◽  
Myocardial Injury ◽  
Troponin I ◽  
Early Stage ◽  
High Sensitivity ◽  
Diagnostic Value ◽  
Cardiac Troponin I ◽  
Roc Curve Analysis ◽  
Neonatal Asphyxia

Objective Low-cost diagnostic and prognostic biomarkers could help guide clinical management of neonates with myocardial injury after asphyxia. This study aimed to assess the utility of creatine kinase (CK)-MB, high-sensitivity cardiac troponin I (hs-cTnI), brain natriuretic peptide (BNP), and myoglobin in the early diagnosis of myocardial injury following neonatal asphyxia. Methods Eighteen neonates with asphyxia and myocardial injury, 22 neonates with asphyxia and no myocardial injury, and 19 neonates without asphyxia (controls) were enrolled consecutively at the Neonatology Department, First Hospital of Lanzhou University (August 2013 to December 2014). Serum CK-MB, hs-cTnI, BNP, and myoglobin levels were evaluated at 12 hours and 7 days after birth. Their diagnostic value for myocardial injury was assessed by receiver operating characteristic (ROC) curve analysis. Results Levels of all four markers were higher in neonates with asphyxia and myocardial injury than in neonates with asphyxia and no myocardial injury or controls 12 hours after birth. The marker hs-cTnI had the highest diagnostic value. Using a cutoff value of 0.087 µg/L for hs-cTnI, the sensitivity, specificity, and diagnostic accuracy for asphyxia-induced myocardial injury were 55.6%, 95.5%, and 77.5%, respectively. Conclusions Serum hs-cTnI levels can predict myocardial injury caused by neonatal asphyxia at an early stage.

scholarly journals APPROACHES TO EARLY DIAGNOSIS OF THYROID CANCER

2018 ◽  
Vol 25 (3) ◽  
pp. 139-148
Author(s):  
A. T. ABDRASHITOVA ◽  
Т. N. PANOVA ◽  
O. N. DIAKOVA ◽  
S. G. DZHUVALAKOV ◽  
D. L. TYOPLYI
Keyword(s):  
Thyroid Cancer ◽  
Early Diagnosis ◽  
Malignant Tumors ◽  
Molecular Genetic ◽  
Genetic Research ◽  
Modern Science ◽  
High Sensitivity ◽  
Diagnostic Methods ◽  
Ultrasound Elastography ◽  
Advantages And Disadvantages

Aim. To analyze modern literature dealing with the issues of finding highly informative modern methods of early diagnostics of malignant tumors of thyroid.Materials and methods. The study of recent Russian and foreign literature in the databases RSCI, Scopus, Web of Science, Pubmed has been carried out.Results.This article represents statistical information on the prevalence of this disease, age and gender peculiarities, modern international cytological classification of thyroid – Thyroid Bethesda Classification. The article shows diagnostic values of ultrasound, elastography, dopplerography, as well as fine needle aspiration biopsy with the subsequent cytological, immunocytochemical study, and molecular-genetic research. The advantages and disadvantages of existing methods of diagnostics of cancer of thyroid have been analyzed. High sensitivity and specificity of molecular genetic studies, which increases with application of diagnostic panels has been observed.Conclusion. Modern science has many methods for early diagnosis of malignant forms of thyroid disease, but none of them meets the modern requirements of practical health care. It justifies the importance of further search for sensitive, specific and available diagnostic methods of thyroid cancer.

scholarly journals Nanotechnology in cancer diagnosis: progress, challenges and opportunities

2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Ye Zhang ◽  
Maoyu Li ◽  
Xiaomei Gao ◽  
Yongheng Chen ◽  
Ting Liu
Keyword(s):  
Cancer Diagnosis ◽  
Early Stage ◽  
High Sensitivity ◽  
Clinical Applications ◽  
Diagnostic Methods ◽  
Cancer Early Detection ◽  
Challenges And Opportunities ◽  
Key Factor ◽  
Sensitivity Specificity

AbstractIn the fight against cancer, early detection is a key factor for successful treatment. However, the detection of cancer in the early stage has been hindered by the intrinsic limits of conventional cancer diagnostic methods. Nanotechnology provides high sensitivity, specificity, and multiplexed measurement capacity and has therefore been investigated for the detection of extracellular cancer biomarkers and cancer cells, as well as for in vivo imaging. This review summarizes the latest developments in nanotechnology applications for cancer diagnosis. In addition, the challenges in the translation of nanotechnology-based diagnostic methods into clinical applications are discussed.

scholarly journals To Know or Not to Know: Ethical Issues Related to Early Diagnosis of Alzheimer's Disease

2010 ◽  
Vol 2010 ◽  
pp. 1-4 ◽  
Author(s):  
Niklas Mattsson ◽  
David Brax ◽  
Henrik Zetterberg
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Early Diagnosis ◽  
Ethical Issues ◽  
Early Stage ◽  
Diagnostic Methods ◽  
Disease Modifying Therapy ◽  
Potential Benefits ◽  
Disease Modifying ◽  
Early Decision

In Alzheimer's disease (AD), pathological processes start in the brain long before clinical dementia. Biomarkers reflecting brain alterations may therefore indicate disease at an early stage, enabling early diagnosis. This raises several ethical questions and the potential benefits of early diagnosis must be weighted against possible disadvantages. Currently, there are few strong arguments favouring early diagnosis, due to the lack of disease modifying therapy. Also, available diagnostic methods risk erroneous classifications, with potentially grave consequences. However, a possible benefit of early diagnosis even without disease modifying therapy is that it may enable early decision making when patients still have full decision competence, avoiding problems of hypothetical consents. It may also help identifying patients with cognitive dysfunction secondary to other diseases that may be responsive to treatment already today.

EVALUATION OF HYSTEROSALPINGOGRAPHY VERSUS LAPAROSCOPY IN THE DETERMINATION OF TUBAL FACTORS IN FEMALE INFERTILITY: A HOSPITAL BASED COMPARATIVE STUDY.

2020 ◽  
Vol 4 (9) ◽  
Author(s):  
Richa Choudhary ◽  
Rishikant Sinha
Keyword(s):  
Female Infertility ◽  
Diagnostic Methods ◽  
Panoramic View ◽  
Tubal Patency ◽  
Pelvic Organs ◽  
Clinical Investigations ◽  
Detailed Assessment ◽  
Reproductive Anatomy ◽  
Tubal Pathology

Objectives: Hysterosalpingography and laparoscopy both are the diagnostic methods for assessment of female infertility.  The present study was to compare the evaluation of hysterosalpingography (HSG) versus laparoscopy in determination of tubal factors in female infertility. Methods: Detailed assessment, physical examination and clinical investigations were performed in all 100 infertile female with age 20 years to 40 years. All patients were advised to perform digital HSG. Patients with an abnormal HSG underwent laparoscopy without delay, whereas in patients with a normal HSG, laparoscopy was performed three months after HSG. HSG is best scheduled during the 2nd -5th day interval immediately following the end of menstruation, to minimize risk for infection, avoid interference from intrauterine blood and clot, and to prevent any possibility that the procedure might be performed after conception. Results: Data was analysed by using IBM SPSS version 23 software.  All data was tabulated and percentages were calculated. Mean ± standard deviation was observed. Conclusions: Diagnostic laparoscopy is the gold standard in diagnosing tubal pathology and other intra-abdominal causes of infertility. Other hand, Hysterosalpingography is a frequently utilized diagnostic tool in the assessment of tubal status and detection of uterine anatomical defects in infertility. Hysterosalpingography and laparoscopy are not alternatives but complimentary investigations. But, inadequacy of hysterosalpingography (HSG) in determining the state of tubal patency, emphasizes the need for laparoscopy. Laparoscopy provides both a panoramic view of the pelvic reproductive anatomy and a magnified view of pelvic organs and peritoneal surfaces. Keywords: Female infertility, Tubal patency, HSG, Laparoscopy

On the effect of the periodicity of diagnostic measurements on improving the reliability of high-voltage transformers

2019 ◽  
Vol 12 (1) ◽  
pp. 18-21
Author(s):  
V. A. Tikhonov
Keyword(s):  
Service Life ◽  
High Voltage ◽  
Chromatographic Analysis ◽  
Aluminum Industry ◽  
Early Stage ◽  
Diagnostic Methods ◽  
Transformer Oil ◽  
Operating Voltage ◽  
Dissolved Gases ◽  
The Aluminum Industry

The influence of the periodicity of diagnostic measurements on the operational state of high-voltage transformers is considered. Examples of defects of switching devices of converter transformers and methods for their detection are given. The rationale for the importance of recognition of defects at an early stage of their occurrence is given. The influence of the multiplicity of overvoltages on the service life of converter transformers in the aluminum industry is investigated. Based on the analysis of the service life of converter transformers of one of the powerful aluminum plants, where 83% of converter transformers have exhausted their standard service life, it is shown that in 40% of cases it would be possible to avoid their failures, with timely detection and elimination of emerging defects. Examples of defects of OLR (on-load regulators) of converter transformers and methods for their detection are given. The importance of recognition of defects at an early stage of their occurrence is substantiated. A method for chromatographic analysis of dissolved gases in transformer oil has been developed for the qualitative determination of defects and ways to eliminate them. Examples of diagnostics of converter transformers at operating voltage and working load are given, providing the best quality operational characteristics of converter transformers. The periodicity of diagnostic measurements and the reduction of defects and failures has been substantiated. The question of diagnosing the state of the converter transformer TDNP-40000/10 at an enterprise of the aluminum industry is investigated. Currently, diagnostic methods are being developed based on chromatographic analysis of dissolved gases in transformer oil. The presented method of evaluating the operating parameters of transformers allows for the safe operation of high-voltage transformers and enables to increase the reliability of the power supply scheme of aluminum industry plants.

Trends in Diagnosis for Active Tuberculosis Using Nanomaterials

2019 ◽  
Vol 26 (11) ◽  
pp. 1946-1959 ◽  
Author(s):  
Le Minh Tu Phan ◽  
Lemma Teshome Tufa ◽  
Hwa-Jung Kim ◽  
Jaebeom Lee ◽  
Tae Jung Park
Keyword(s):  
Sensitivity And Specificity ◽  
High Efficiency ◽  
Point Of Care ◽  
High Sensitivity ◽  
Signs And Symptoms ◽  
Diagnostic Methods ◽  
Advantages And Disadvantages ◽  
Treatment And Prevention ◽  
Clinical Tools ◽  
Diagnostic Applications

Background:Tuberculosis (TB), one of the leading causes of death worldwide, is difficult to diagnose based only on signs and symptoms. Methods for TB detection are continuously being researched to design novel effective clinical tools for the diagnosis of TB.Objective:This article reviews the methods to diagnose TB at the latent and active stages and to recognize prospective TB diagnostic methods based on nanomaterials.Methods:The current methods for TB diagnosis were reviewed by evaluating their advantages and disadvantages. Furthermore, the trends in TB detection using nanomaterials were discussed regarding their performance capacity for clinical diagnostic applications.Results:Current methods such as microscopy, culture, and tuberculin skin test are still being employed to diagnose TB, however, a highly sensitive point of care tool without false results is still needed. The utilization of nanomaterials to detect the specific TB biomarkers with high sensitivity and specificity can provide a possible strategy to rapidly diagnose TB. Although it is challenging for nanodiagnostic platforms to be assessed in clinical trials, active TB diagnosis using nanomaterials is highly expected to achieve clinical significance for regular application. In addition, aspects and future directions in developing the high-efficiency tools to diagnose active TB using advanced nanomaterials are expounded.Conclusion:This review suggests that nanomaterials have high potential as rapid, costeffective tools to enhance the diagnostic sensitivity and specificity for the accurate diagnosis, treatment, and prevention of TB. Hence, portable nanobiosensors can be alternative effective tests to be exploited globally after clinical trial execution.

scholarly journals Analytical Validation and Clinical Application of Rapid Serological Tests for SARS-CoV-2 Suitable for Large-Scale Screening

Diagnostics ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 869
Author(s):  
Amedeo De Nicolò ◽  
Valeria Avataneo ◽  
Jessica Cusato ◽  
Alice Palermiti ◽  
Jacopo Mula ◽  
...  
Keyword(s):  
Early Diagnosis ◽  
Real Time Pcr ◽  
Large Scale ◽  
High Sensitivity ◽  
Analytical Validation ◽  
Pcr Assay ◽  
Serological Tests ◽  
Flow Test ◽  
Lateral Flow Test ◽  
Large Scale Screening

Recently, large-scale screening for COVID-19 has presented a major challenge, limiting timely countermeasures. Therefore, the application of suitable rapid serological tests could provide useful information, however, little evidence regarding their robustness is currently available. In this work, we evaluated and compared the analytical performance of a rapid lateral-flow test (LFA) and a fast semiquantitative fluorescent immunoassay (FIA) for anti-nucleocapsid (anti-NC) antibodies, with the reverse transcriptase real-time PCR assay as the reference. In 222 patients, LFA showed poor sensitivity (55.9%) within two weeks from PCR, while later testing was more reliable (sensitivity of 85.7% and specificity of 93.1%). Moreover, in a subset of 100 patients, FIA showed high sensitivity (89.1%) and specificity (94.1%) after two weeks from PCR. The coupled application for the screening of 183 patients showed satisfactory concordance (K = 0.858). In conclusion, rapid serological tests were largely not useful for early diagnosis, but they showed good performance in later stages of infection. These could be useful for back-tracing and/or to identify potentially immune subjects.

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