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[Detection of expression of heat shock protein 47 mRNA in pathological scar tissue by using real-time fluorescent quantitative RT-PCR].

OBJECTIVE: To detect the expression of heat shock protein 47 mRNA in pathological scar tissue by using real-time fluorescent quantitative reverse transcription-polymerase chain reaction (RT-PCR). METHODS: The tissues of normal skin (n = 6), hypertrophic scar (n = 6) and keloid (n = 6) were adopted, which were diagnosed by Pathology Department. Based on fluorescent TaqMan methodology, the real-time fluorescent quantitative RT-PCR were adopted to detect the expression of heat shock protein 47 mRNA. RESULTS: Compared with normal skin tissue (0.019 +/- 0.021) x 10(5), the expressions of heat sho

Use of real-time PCR on blood samples for diagnosis of invasive aspergillosis.

We developed a new quantitative system for diagnosis of invasive pulmonary aspergillosis (IPA) using real-time automated polymerase chain reaction (PCR). Intra-assay and interassay precision rates for in vitro examination were 2.53% and 2.20%, respectively, and the linearity of this assay was obtained when there were >20 copies/well. We examined 323 samples taken from 122 patients with hematological malignancies, including 33 patients with IPA and 89 control patients. Blood samples were subjected to PCR antigen detection methods, using enzyme-linked immunosorbent assay (ELISA) and determinatio

Platelet-rich plasma can release nutrient factors to promote facial nerve crush injury recovery in rats.

To evaluate the effects of platelet-rich plasma (PRP) on promoting neural repair after facial nerve compression in rats and the mechanism by … sae movement, eyelid closure, and electrophysiology. Electron microscopy, immunohistochemistry, and real-time polymerase chain reaction (PCR) were used to detect nutrient factor expression in the brain and nerve sections. This study was conducted in Shandong Provincial ENT Hospital Affiliated to Shandong University,  Shandong, China between January and November 2018.  Results: Plate …

Study of NOTCH1 and FBXW7 Mutations and Its Prognostic Significance in South Indian T-Cell Acute Lymphoblastic Leukemia.

NOTCH1/FBXW7 mutations trigger oncogenic NOTCH1 signaling and its downstream target genes play crucial roles in the molecular pathogenesis o … hotspot exons of FBXW7. In all, 7 mutations were identified which were not previously reported. The real-time polymerase chain reaction study in 15 patients revealed that increased expression of activated NOTCH1 was found in NOTCH1/FBXW7 hotspot exon-mutated cases. In addition, NOTCH1/FBXW7-mutated patients had showed upregulated HES1, c-MYC, NOTCH3 gene expression. When survival an …

High frequency of p16 and p14 promoter hypermethylation and marked telomere instability in salivary gland tumors.

OBJECTIVES: to investigate p16(INK4a) and p14(ARF) tumor suppressor gene methylation status, determine telomere length and assess the importance of these epigenetic and genetic parameters in the development of pleomorphic adenoma and carcinoma ex pleomorphic adenoma of the parotid salivary glands. MATERIALS AND METHODS: Genomic DNA from paraffin-embedded samples of 50 pleomorphic adenomas and 10 carcinomas ex pleomorphic adenoma was subjected to methylation specific polymerase chain reaction for hypermethylation analyses and real time polymerase chain reaction for the relative telomere length

Comparative evaluation of the Abbott HIV-1 RealTime™ assay with the Standard Roche COBAS® Amplicor™ HIV-1 Monitor® Test, v1.5 for determining HIV-1 RNA levels in plasma specimens from Pune, India.

The implementation of cost effective HIV-1 viral load assays in resource-limited settings have been an impediment for monitoring HIV-1 therapy. A study involving the comparative analytical performance of two HIV-1 viral load assays - Standard Roche COBAS(®) Amplicor™ HIV-1 Monitor(®) Test, version 1.5 (Roche Diagnostics, Basel, Switzerland) and Abbott HIV-1 RealTime™ assay (Abbott Molecular, Wiesbaden, Germany) was performed using 125 specimens in Pune, India. A strong correlation was observed between the manual endpoint reverse transcriptase polymerase chain reaction assay and the recent real

Interleukin-8 gene promoter polymorphism (rs4073) may contribute to chronic periodontitis.

BACKGROUND: The proinflammatory chemokine interleukin (IL)-8 is important in the regulation of the inflammatory response. Analyses of the si … with chronic periodontitis; analyses were adjusted by multivariate logistic regression modeling. A real-time polymerase chain reaction performance was used to detect levels of the IL-8 mRNA. RESULTS: The analysis pointed to a statistically significant association of chronic periodontitis with the heterozygous TA genotype (P = 0.001); the results showed an increase in the frequency …

Quantitative PCR analysis for Bcl-2/IgH in a phase III study of Yttrium-90 Ibritumomab Tiuxetan as consolidation of first remission in patients with follicular lymphoma.

PURPOSE The randomized First-Line Indolent Trial (FIT) was conducted in patients with advanced follicular lymphoma (FL), to evaluate the safety and efficacy of yttrium-90 ((90)Y) ibritumomab tiuxetan given as consolidation of complete or partial remission. This study of minimal residual disease was undertaken in parallel, to determine the rate of conversion from bcl-2 polymerase chain reaction (PCR) -detectable to -undetectable status and the corresponding effect on progression-free survival (PFS). PATIENTS AND METHODS Blood samples from 414 patients ((90)Y-ibritumomab, n = 208; control, n = 2

Validation of Roche LightCycler Epstein-Barr virus quantification reagents in a clinical laboratory setting.

Epstein-Barr virus (EBV) is associated with a wide range of benign and malignant diseases, including infectious mononucleosis, lymphoma, pos … is, IN). DNA was extracted from plasma using a MagNaPure instrument, and viral load was measured by real-time polymerase chain reaction on a LightCycler. Analyte-specific reagents included primers and hybridization probes targeting the EBV LMP2 gene and a spiked control sequence. Accuracy and reproducibility were established using DNA from three cell lines. The assay was sensitive t …

Heme oxygenase-1 production by peripheral blood monocytes during acute inflammatory illnesses of children.

Monocytes play key roles both in innate and adaptive antigen-specific immunity and they constitute critical components of the immune respons … d reverse transcription polymerase chain reaction. Quantitative analysis of HO-1 mRNA expression by real-time polymerase chain reaction revealed that monocytes from controls exhibited low, but significant levels of HO-1 mRNA, indicating that circulating monocytes produce HO-1 constantly, in response to basal level of oxidative stress encountered daily. Significantly elevated HO-1 mR …

Laminaria japonica polysaccharide alleviates type 2 diabetes by regulating the microbiota-gut-liver axis: A multi-omics mechanistic analysis.

The hypoglycemic effects of low-molecular-weight Laminaria japonica polysaccharide (LJO) were investigated in type 2 diabetes mellitus (T2DM) mice, focusing on its effect on the microbiome, metabolome, and transcriptome. The findings demonstrated that LJO significantly reduced fasting blood glucose levels, insulin levels, and inflammatory factors. Additionally, LJO induced changes in gut microbiota composition and increased the concentrations of cecal short-chain fatty acids. Analysis of transcriptomics and metabolomics data revealed that LJO primarily altered the endocrine and digestive syste

Third-generation sequencing technology in the prevention and control of thalassemia: Applications and advances.

With the rapid advancement of sequencing technology, third-generation sequencing, particularly single-molecule real-time sequencing and nanopore sequencing, has opened new avenues for the precise prevention and control of genetic diseases. It offers distinct advantages, including long-read lengths, minimal requirement for extensive polymerase chain reaction amplification, and real-time sequencing capability. This narrative review summarizes and critically evaluates recent advances in the application and latest progress of third-generation sequencing in thalassemia. It focuses on the technical

Impact of Real-Time Multiplex PCR Testing for Respiratory Viruses on Antibiotic Use.

OBJECTIVE: Real-time multiplex polymerase chain reaction (PCR) test increases the detection of viral respiratory tract infections. This study aimed to evaluate the effect of real-time multiplex PCR on antibiotic use in viral respiratory tract infections. MATERIALS AND METHODS: This retrospective study included patients who underwent respiratory multiplex PCR tests. Patients were grouped into influenza-like illness, viral pneumonia, bacterial pneumonia, and co-infection. These groups were compared in terms of antibiotic use. RESULTS: This retrospective study included patients who underwent re

Enterovirus-Rhinovirus-Induced Acute Respiratory Distress Syndrome in Adults: A Case Report and Short Literature Review.

Enteroviruses and rhinoviruses (EV-RV) are small RNA viruses that usually cause the common cold and asthma exacerbations. Although EV-RV-induced acute respiratory distress syndrome (ARDS) is common in children, only scattered reports of ARDS in adults have been published. The diagnosis has been greatly facilitated by the advent of molecular techniques, namely, real-time polymerase chain reaction (RT-PCR). EV-RV can cause ARDS by stimulating a cytokine cascade. No antiviral therapy has yet been approved, and treatment is entirely supportive. Herein, we report a rare case of EV-RV infection in a…

Катастрофические проявления у пациентов с заражением SARS-COV-2.

В то время как, как известно, SARS-COV-2 вызывает пневмонию и синдром острого дыхательного расстройства (ARDS), было также отмечено множество внешних проявлений COVID-19. У пациентов с SARS-COV-2 были описаны различные проявления, включая эритематическую сыпь, уртика и ветряные везикла. Шесть пациентов (два мужчины и четыре женщины) в возрастной группе от 50 до 60 лет, госпитализированных с инфекцией SARS-COV-2, подтвержденной цепной реакцией на полимеразу в режиме реального времени (ПКР в режиме реального времени), проявили резкие проявления. Сыпь была смешанной, прозрачной, центробежной и не

Совпадение в аннотации оригинала
While SARS-CoV-2 is known to cause pneumonia and acute respiratory distress syndrome (ARDS), many extrapulmonary manifestations of COVID-19 … omen, in the age group of 50 to 60 years old, hospitalized with SARS-CoV-2 infection confirmed with real-time polymerase chain reaction (real-time PCR) presented cutaneous manifestations. The rash was confluent, spotty, centrifugal, and non-itchy on the head and torso. It was not hemorrhagic, and no crust or blisters were observed. The results of laboratory tests were normal, and th …

Herpes Simplex Virus Anterior Uveitis in a Child Presenting as a Hypopyon in a White Eye.

PURPOSE: To report a rare ocular presentation of unilateral anterior uveitis with hypopyon in a 5-year-old child, suspected as masquerade. METHODS: Retrospective report. RESULTS: A 5-year-old boy presented with hypopyon-uveitis. Detailed systemic work-up was negative for masquerade and uveitis entities. He was started on oral and topical steroids but had reactivation on taper. Real-time polymerase chain reaction (PCR) test of aqueous fluid was positive for herpes simplex virus (HSV)-1 DNA. The inflammation resolved completely on oral acyclovir and topical corticosteroids. He subsequently und…

Human herpesvirus 6B encephalitis in a liver transplant recipient: A case report and review of the literature.

Human herpesvirus 6B (HHV-6B) encephalitis in a liver transplant recipient is rarely reported. In this report, we presented a case of HHV-6B encephalitis in a liver transplant recipient and reviewed the relevant literature. A 56-year-old man was admitted to the intensive care unit (ICU) with an acute headache and intermittent convulsion 17 days after liver transplantation. Next-generation sequencing (NGS) of the cerebrospinal fluid (CSF) revealed 30691 sequence reads of HHV-6B and real-time polymerase chain reaction (real-time PCR) of the CSF detected HHV-6B DNA at 12 000 copies/mL, so the pat…

Development and application of a SYBR green real-time PCR for detection of the emerging avian leukosis virus subgroup K.

Avian leukosis virus subgroup K (ALV-K) is an emerging ALV tumor virus of chickens. We developed a SYBR green-based real-time polymerase chain reaction (PCR) assay for the rapid and economical detection of ALV-K in chicken flocks. The assay was specific for ALV-K and did not cross-react with other ALV subgroup or avian influenza virus, Newcastle disease virus, or Marek's Disease virus. The method was 100 times more sensitive than conventional PCR and 10 times more sensitive than the enzyme-linked immunosorbent assay (ELISA) for the P27 antigen. The assay was also more sensitive than convention…

Absence of Measles Virus Detection from Stapes of Patients with Otosclerosis.

Objective To determine molecularly the presence of measles virus genetic material in the stapes of patients with otosclerosis. Study Design A cross-sectional study. Setting A tertiary referral hospital. Subjects and Methods Genetic material was extracted from the stapes of patients with otosclerosis (n = 93) during the period from March 2011 to April 2012. The presence of viral measles sequences was evaluated by the real-time reverse transcriptase polymerase chain reaction (RT-PCR). The expression of the CD46 gene was determined. Results Ninety-three patients were included in the study. No sam

Transplanted lungs and the "white plague": A case-report and review of the literature.

RATIONALE: Solid organ transplant recipients, especially after lung transplantation, are at increased risk for Mycobacterium tuberculosis pulmonary tuberculosis due to lifelong immunosuppression. PATIENT CONCERNS: A 41-year-old woman underwent a second bilateral lung transplantation that was complicated by fatal pulmonary tuberculosis. DIAGNOSES: Histological examination of a lung biopsy performed 6 weeks after retransplantation revealed a caseating granuloma and necrosis. Acid-fast bacilli were identified as rifampicin-susceptible M. tuberculosis by real-time polymerase chain reaction (PCR)…