scholarly journals Distnct Schistosoma mansoni-Specific Immunoglobulin Subclasses Are Induced by Different Schistosoma mansoni Stages—A Tool to Decipher Schistosoma mansoni Infection Stages

Pathogens ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 19
Author(s):  
Kathrin Arndts ◽  
Tayseer E. M. Elfaki ◽  
Michael J. Doenhoff ◽  
Gnatoulma Katawa ◽  
Ibtisam A. Goreish ◽  
...  
Keyword(s):  
Schistosoma Mansoni ◽  
Serum Samples ◽  
Major Health Problem ◽  
Major Health ◽  
Specific Immunoglobulin ◽  
Immunoglobulin Subclasses ◽  
Multivariable Regression ◽  
Polymerase Chain ◽  
Egg Antigen ◽  
Effective Medication

Despite the existence of an effective medication against schistosomiasis, the disease remains a major health problem in affected areas, especially for those lacking appropriate sanitary facilities. Moreover, treatment cannot prevent re-infection since it is only effective on adult schistosome worms. Previous retrospective studies in the Sudan have discovered unique immuno-epidemiological profiles in uninfected individuals and those positive for Schistosoma mansoni via polymerase chain reaction (PCR) but egg-negative and those with eggs in their stool. Expanding on these data, serum samples from these individuals were further investigated for the presence of cercarial (SmCTF)-specific antibodies, which would indicate immune responses at the early stages of infection. Indeed, SmCTF IgG1, 2, 3 and 4 levels were significantly elevated in SmPCR+ individuals when compared to egg+ patients. Following multivariable regression analysis, including SmCTF-specific Igs, Schistosoma egg antigen (SEA)-specific and Schistosoma worm antigen (SWA)-specific immunoglobulins revealed a specific immunoglobulin (Ig) profile of individuals presenting different states of infection, which may be a useful future tool in order to identify egg− individuals and thereby prevent unnecessary treatments.

scholarly journals Proteomic profile of pulmonary and extra pulmonary TB samples

2018 ◽  
Vol 16 (2) ◽  
pp. 21-27
Author(s):  
J. Kumar ◽  
C. Cheekavolu ◽  
V.L. Ashalatha ◽  
P. Leela ◽  
H.F. Daginawala
Keyword(s):  
Early Diagnosis ◽  
Polyacrylamide Gel Electrophoresis ◽  
Sodium Dodecyl ◽  
Secretory Proteins ◽  
Healthy Individuals ◽  
Serum Samples ◽  
Major Health Problem ◽  
Major Health ◽  
Therapeutic Drugs ◽  
Proteomic Approach

Introduction: Tuberculosis (TB) is a major health problem in India, so early diagnosis and treatment of Mycobacterium tuberculosis (M.tb.) infection can prevent deaths from this pathogen. The secretion of proteins by M.tb. is important in diagnostic purposes for generation of therapeutic drugs and vaccines candidates for TB. The objective of this study was to identify the protein expression (biomarkers) in TB and Tuberculosis meningitis (TBM) using proteomic approach. Methods: In this study, using Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDSPAGE), we analyzed the secretory proteins of M.tb. in serum, cerebrospinal fluid (CSF) samples. The identified proteins were determined by Total Lab- 100 Quantity One densitometry software. Results: Our study showed that protein bands expressed in CSF samples reveals the presence of 72kD, 70kD, 44kD, 40kD & 16kD predominantly in TBM patients compared to healthy individuals. The electrophoretogram identified 97kD, 72kD, 44kD, 38kD, 29kD & 16kD predominant proteins in serum samples of TB patients. Conclusion: The detection of secretory proteins in serum and CSF samples of M.tb. in TB and TBM patients gives reliable and early diagnosis of TB and TBM. The secretory proteins can be useful as immunodiagnostic and vaccine targets which can serve as important biomarkers

scholarly journals EPIDEMIOLOGICAL STUDY OF CUTANEOUS LEISHMANIASIS IN SOME IRAQI PROVINCES

2018 ◽  
Vol 14 (4) ◽  
pp. e18-e24
Author(s):  
Magda A. Ali ◽  
Ali Khamesipour ◽  
Abdulsadah A. Rahi ◽  
Mehdi Mohebali ◽  
Ahmad Akhavan ◽  
...  
Keyword(s):  
Cutaneous Leishmaniasis ◽  
Leishmania Species ◽  
Health Concern ◽  
Major Health Problem ◽  
Major Health ◽  
Health Authorities ◽  
Lower Infection ◽  
Polymerase Chain ◽  
Very High ◽  
Single Lesion

Background Cutaneous leishmaniasis (CL) remains a serious public health concern in some parts of Iraq. The aims of this study to report of CL in some parts of Iraq, by different parasitological, cultural, and molecular methods and evaluate sex differences among infected patients. This is the first study conducted to characterize Leishmania species causing CL among Iraqi patients using the sequence analysis of Internal Transcribed Spacer1(ITS1) at Wasit Province. Methods A total of 700 cases of suspected CL were referred to the Iraqi clinics and health centres and they checked for Leishmania amastigote using a Giemsa-stain; however, the Novy Macneal Nicolle (NNN) culture led to the growth of promastigotes in all samples, then the samples were examined using polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP)-PCR methods. Results The present study indicated that the prevalence of CL as follow: AL-Diwaniyah 88(15.1%), Wasit 85 (14.5%), Najaf 79 (13.6%), Thi-Qar76 (13.1%), Basrah 67 (11.5%), Baghdad 65 (11.2%), Diyala 63(10.8%), and Salah-Edin province which recorded lower infection 60 (10.3%), and it appeared in 83.3% by using Giemsa- smeared stain. The highest infection rate (100%) appeared using PCR while the lowest infection (68%) appeared by culture on NNN media. The present study was revealed that the highest infection (60%) was caused by L.major rather than L.tropica (40%). Our results showed that 368 (52.6%) of CL patients were had single lesion and 215 (30.7%) had multiple lesions, and the ulcerative wet type lesions were present in 49.6%, while the nodule dry type lesions were present in 33.7%. The overall prevalence of cutaneous leishmaniasis in the study area was very high (83.3%) having a statistically significant association with sex; males are more prone (56.4%) to CL as compared to females (43.6%) Conclusions A clear and reliable bias toward males exists in some tropical diseases, such as leishmaniasis. CL is a major health problem in Iraq and CL caused by many countries including Iraq. Health authorities should be aware of the fact that war and terrorist activities induce expansion of the disease and increase the incidence rate in the situation that access to medical treatment is not easy especially in poor conditions in leishmaniasis endemic areas.

scholarly journals Detection of Schistosoma mansoni DNA using polymerase chain reaction from serum and dried blood spot card samples of an adult population in North-western Tanzania

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Antje Fuss ◽  
Humphrey D. Mazigo ◽  
Andreas Mueller
Keyword(s):  
Polymerase Chain Reaction ◽  
Schistosoma Mansoni ◽  
Real Time ◽  
Real Time Pcr ◽  
Rank Test ◽  
Specific Method ◽  
Chain Reaction ◽  
Serum Samples ◽  
Severe Infections ◽  
Polymerase Chain

Abstract Background Real-time polymerase chain reaction (PCR) is a sensitive and specific method for diagnosing schistosomiasis. However, this method should be performed in a laboratory, usually located distant from the sample collection site. Therefore, it is important to have fast sampling preservation methods, which allow simple transport prior to DNA extraction and amplification. The aim of this study was to verify if blood samples applied to filter paper are suitable for analysis of Schistosoma mansoni DNA by real-time PCR. Methods A cross-sectional study was conducted among 100 study participants aged 17 to 70 years in a fishing village on the southern shore of Lake Victoria, Tanzania. Serum samples and ethylenediaminetetraacetic acid (EDTA)-anticoagulated whole blood for preparation of dried blood spots (DBS) were collected to test for Schistosoma mansoni infection by real-time PCR. A combined diagnostic reference of positive results of serum-based real-time PCR and the Kato-Katz (KK) method was used for analysis. Sensitivity and negative predictive value (NPV) were calculated. The Wilcoxon signed-rank test was chosen to compare the mean cycle threshold (Ct) values from serum and DBS. Results According to the reference, 92.5% S. mansoni positive samples were determined. The serum-based real-time PCR performed excellently with 95.4% sensitivity, whereas the DBS-based real-time PCR showed a low sensitivity (45.4%). The Ct-values were significantly higher in DBS (median: 37.3) than in serum samples (median: 27.5, P < 0.001), reflecting a lower parasite-specific DNA load on the filter cards. With increasing egg counts, an increase in sensitivity was observed for all methods. The POC-CCA test and the serum-based real-time PCR showed a sensitivity of 100% for medium and severe infections. The DBS real-time PCR showed a sensitivity of only 85.7% even for severe infections. Conclusions DBS-based real-time PCR did not provide good results in our study and therefore should not be recommended or must be tested concerning temperature of storage, storage duration, use of different filter papers and extraction methods before it is used in future studies. In contrast, our results showed that the POC-CCA test is a sensitive and precise test for detecting S. mansoni infections "Image missing" .

scholarly journals SCREENING FOR THE HOMOZYGOUS C.144DELC MUTATION IN AURKC GENE IN ALGERIAN INFERTILE MEN

2018 ◽  
Vol 11 (2) ◽  
pp. 161
Author(s):  
Rezgoune Mohamed Larbi ◽  
Chellat Djalila ◽  
Abadi Noureddine ◽  
Satta Dalila
Keyword(s):  
Cycle Sequencing ◽  
Major Health Problem ◽  
Major Health ◽  
Aurora Kinases ◽  
Ibn Sina ◽  
The Third ◽  
Infertile Men ◽  
Pcr Products ◽  
Polymerase Chain ◽  
Mitosis And Meiosis

 Objective: Male infertility is a major health problem worldwide. Despite recent advances, the etiopathogenesis of spermatogenic failure remains largely uncertain. Aurora kinases, a family of serine/threonine kinases, consisting of Aurora A (AURKA), Aurora B (AURKB), and Aurora C (AURKC), are essential kinases for cell division through regulating mitosis and meiosis. The aim of this study was to investigate the frequency of c.144delC mutation in AURKC gene in infertile Algerian patients with abnormal sperm parameters.Methods: In this study, 40 infertile men with impaired spermatogenesis (Azoospermia “AZOs,”” oligoasthenoteratospermia “OATs,”” Asthenospermia “ASTs”) were recruited from Ibn Rochd clinic and Ibn Sina Laboratory, between 2008 and 2014. All men were of Algerian origin. DNA was extracted from peripheral blood. The third exon of the AURKC gene was amplified using polymerase chain reaction (PCR). Then, PCR products were sequenced using the big dye V1.1 terminator cycle sequencing in forward and reverse directions, and the results of sequenced segments were analyzed.Results: Sequencing of the third exon of AURKC gene revealed the absence of c144delC mutation in all of the 40 patients screened.Conclusion: Our data indicate that the AURKC c.144delC mutation must be investigated in infertile men with Macrozoospermia.

scholarly journals SD DENGUE DUO® (NS1, IgG, IgM) RAPID TEST DALAM MENUNJANG DIAGNOSIS INFEKSI VIRUS DENGUE

2018 ◽  
Vol 16 (2) ◽  
pp. 97
Author(s):  
Diah Puspita Rini ◽  
Aryati Aryati
Keyword(s):  
Virus Infection ◽  
Dengue Virus ◽  
Rapid Test ◽  
Hemorrhagic Fever ◽  
Serum Samples ◽  
Dengue Virus Infection ◽  
Major Health Problem ◽  
Major Health ◽  
Who Criteria ◽  
Disease Antigen

Dengue virus infection can cause dengue hemorrhagic fever (DHF) which is still a major health problem in Indonesia. Thediagnosis of DHF is established based on WHO criteria and IgM/IgG antidengue serologic markers. A rapid method is needed for thedetecting or screening the disease. Antigen detection (NS1) can be performed by immunochromatography (rapid test) or enzyme -linkedimmunosorbent assay (ELISA). Recently, a rapid test to detect NS1 as an antigen and IgM/IgG antidengue to differentiate primary andsecondary dengue virus infection is available in one cassette. This study evaluated the new commercial dengue rapid test, SD DengueDuo for the detection of both antigen and antibodies to dengue virus. Serum samples used in this study were collected from 33 denguevirus infection patients according to WHO criteria and admitted in the Tropical Ward, Dr. Soetomo Hospital. Samples were taken twice,during acute and convalescent phase. SD Dengue Duo (NS1, IgG, IgM) rapid test was used and confirmed by ELISA as the gold standard.To determine the diagnostic specificity 20 samples of non dengue virus infection (typhoid fever and malaria) confirmed by laboratorytests were used. In the acute phase, SD Dengue Duo (NS1, IgG, IgM) rapid test showed IgG sensitivity 94.7% (18/19), specificity 92.9%(13/14), IgM sensitivity 85% (17/20), specificity 100% (13/13), NS1 sensitivity 50% (10/20), specificity 100% (13/13). In theconvalescent phase, SD Dengue Duo (NS1, IgG, IgM) rapid test showed antidengue IgG sensitivity 96.3% (26/27), specificity 66.7%(4/6), IgM sensitivity 95% (22/23), specificity 80% (8/10), NS1 sensitivity 42.9% (3/7), specificity 100% (26/26). To establish thediagnosis of dengue virus infection, not only NS1, but also antidengue IgM/IgG is needed. SD Dengue Duo containing dengue NS1 antigencombined with IgG/IgM test in one cassette is a rapid, practical and has a high validity diagnostic result.

Detection of Mycobacterium tuberculosis in smear negative sputum by PCR

2012 ◽  
Vol 6 (2) ◽  
pp. 2-6 ◽  
Author(s):  
Mohammad Jobayer ◽  
SM Shamsuzzaman ◽  
Kazi Zulfiquer Mamun
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Pulmonary Tuberculosis ◽  
Accurate Method ◽  
Major Health Problem ◽  
Major Health ◽  
Tuberculosis Patients ◽  
Diagnostic Potential ◽  
Total Death ◽  
Smear Negative ◽  
Negative Sputum

Pulmonary tuberculosis is a major health problem in Bangladesh that is responsible for about 7% of total death in a year. This study was conducted to isolate and identify Mycobacterium tuberculosis from sputum and to evaluate the efficacy of PCR as a modern diagnostic tool, for diagnosis of pulmonary tuberculosis, especially in the smear negative cases. One hundred and fifty suspected pulmonary TB patients (male/ female: 97/53) were included in this study. Single morning sputum was collected from each patient and diagnostic potential of PCR was compared with staining and culture. Twenty five (16.7%) sputum were positive by ZN stained smear. Among 125 smear negative samples, 13 (10.4%) yielded growth in culture in LJ media and 21 (16.8%) samples were positive by PCR. The sensitivity and specificity of PCR in smear negative cases was 100% and 92.9% respectively. Mean detection time in PCR was 24 hours. PCR detected M. tuberculosis in 21 smear negative and 9 culture negative samples. For diagnosis of tuberculosis in smear negative cases, PCR directly from sputum was a very sensitive and accurate method. In conclusion, PCR may be done, especially in clinically suspected pulmonary tuberculosis patients who remain negative by conventional methods.DOI: http://dx.doi.org/10.3329/bjmm.v6i2.19368 Bangladesh J Med Microbiol 2012; 06(02): 2-6

TBE in Sweden

2020 ◽  
Keyword(s):  
Genetic Characterization ◽  
Immunoglobulin M ◽  
Enzyme Linked Immunosorbent Assay ◽  
Second Phase ◽  
Serum Samples ◽  
Tick Borne Encephalitis ◽  
Specific Immunoglobulin ◽  
Tick Borne Encephalitis Virus ◽  
First Time

Tick-borne encephalitis virus (TBEV) was isolated for the first time in Sweden in 1958 (from ticks and from 1 tick-borne encephalitis [TBE] patient).1 In 2003, Haglund and colleagues reported the isolation and antigenic and genetic characterization of 14 TBEV strains from Swedish patients (samples collected 1991–1994).2 The first serum sample, from which TBEV was isolated, was obtained 2–10 days after onset of disease and found to be negative for anti-TBEV immunoglobulin M (IgM) by enzyme-linked immunosorbent assay (ELISA), whereas TBEV-specific IgM (and TBEV-specific immunoglobulin G/cerebrospinal fluid [IgG/CSF] activity) was demonstrated in later serum samples taken during the second phase of the disease.

Prevention and Treatment of Early Childhood Caries (ECC)

2016 ◽  
Vol 1 (3) ◽  
Author(s):  
Jeffrey .
Keyword(s):  
Early Childhood ◽  
Health Problem ◽  
Early Childhood Caries ◽  
Health Providers ◽  
Missing Teeth ◽  
Optimal Basis ◽  
Major Health Problem ◽  
Major Health ◽  
Childhood Caries

Early Childhood Caries (ECC) is a chronic disease that can be prevented. It commonlyaffects children involving in one or more decayed (with lesions or not) teeth, missing teeth (dueto caries), or teeth with fillings in children aged under 71 months. The disease is sometimesoverlooked, but this condition usually affects the general health of children. Early detection ofEarly Childhood Caries (ECC) can prevent problems which are harmful to children. Therefore,the ECC must be prevented and for teeth that have had dental caries they should be givenproper treatment so as not to worsen and affect the quality of life in children. Prevention of thisdisease is a significant component in any health program to prepare for the optimal basis forthe oral health of children. This condition will become a serious health problem if not handledproperly, and it is a major health problem for health providers throughout the world.Primarypreventive must be initiated since a woman getting pregnant.Keywords: Early Childhood Caries (ECC), prevention, treatment

Salivary and Serum Biochemical Alterations in Patients with Acute Viral Hepatitis

2018 ◽  
Vol 69 (3) ◽  
pp. 747-751 ◽  
Author(s):  
Daniela Gabriela Badita ◽  
Iulia Ioana Stanescu ◽  
Andra Balcangiu Stroescu ◽  
Dan Piperea Sianu ◽  
Daniela Miricescu ◽  
...  
Keyword(s):  
Viral Hepatitis ◽  
Hepatitis A ◽  
Hepatitis A Virus ◽  
World Population ◽  
Major Health Problem ◽  
Major Health ◽  
Biochemical Alterations ◽  
B Virus ◽  
Serum Biochemical ◽  
Viral Hepatitis A

Viral hepatitis represents a major health problem worldwide. Approximately 1.4 million people are infected with hepatitis A virus every year, although given that most of the cases evolve asymptomatically the real number could be even higher. At the same time, hepatitis B virus affects up to 30% of the world population and represents one of the main causes of cirrhosis and hepatocellular carcinoma. Thus, it is very important to understand the physiopathology of viral hepatitis A and B not only for the diagnosis, but also for the therapeutic protocol. The present research aimed to determine if HAV and HBV can alter serum and salivary levels of total protein and of 2 important electrolytes: calcium and potassium.

Imaging of Bacteria: Is there Any Hope for the Future Based on Past Experience?

2018 ◽  
Vol 24 (7) ◽  
pp. 772-786 ◽  
Author(s):  
Thomas Ebenhan ◽  
Elena Lazzeri ◽  
Olivier Gheysens
Keyword(s):  
Clinical Practice ◽  
Sterile Inflammation ◽  
Ageing Population ◽  
Major Health Problem ◽  
Major Health ◽  
Number Of Patients ◽  
Implanted Medical Devices ◽  
Neutropenic Patients ◽  
Socio Economic Impact ◽  
Made In

Infectious diseases remain a major health problem and cause of death worldwide. It is expected that the socio-economic impact will further intensify due to escalating resistance to antibiotics, an ageing population and an increase in the number of patients under immunosuppressive therapy and implanted medical devices. Even though radiolabeled probes and leukocytes are routinely used in clinical practice, it might still be difficult to distinguish sterile inflammation from inflammation caused by bacteria. Moreover, the majority of these probes are based on the attraction of leukocytes which may be hampered in neutropenic patients. Novel approaches that can be implemented in clinical practice and allow for swift diagnosis of infection by targeting the microorganism directly, are posing an attractive strategy. Here we review the current strategies to directly image bacteria using radionuclides and we provide an overview of the preclinical efforts to develop and validate new approaches. Indeed, significant progress has been made in the past years, but very few radiopharmaceuticals (that were promising in preclinical studies) have made it into clinical practice. We will discuss the challenges that remain to select good candidates for imaging agents targeting bacteria.

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