Annals of Clinical and Laboratory Science

OBJECTIVE: Triple-negative breast cancer (TNBC) is a subtype with high invasiveness. Due to lacking specific and effective therapies, it is necessary to explore the mechanism of TNBC progression and search for new therapeutic targets. METHODS: Data from the GEPIA2 database was analyzed to explore RNF43 expression in each subtype of breast cancer. RNF43 expression in TNBC tissue and cell lines was determined by RT-qPCR. In vitro biological function analyses including MTT assay, colony formation assay, wound-healing assay and Transwell assay were conducted to explore the role of RNF43 in TNBC...

No abstract text is available yet for this article.

OBJECTIVE: Biotin in elevated concentration interferes with biotin-based immunoassays. We studied biotin interferences in TSH, FT4, FT3, total T4, total T3 and thyroglobulin assays both in vitro and in vivo using Beckman DXI800 analyzer. METHODS: Two serum pools were prepared from left-over specimens. Then aliquots of each pool (and serum control) were supplemented with various amounts of biotin followed by measuring thyroid function tests again. Three volunteers each took 10 mg biotin supplement...

OBJECTIVE: CERS6 antisense RNA 1 (CERS6-AS1), a long non-coding RNA (lncRNA), plays a role in the malignant progression of a variety of cancers. However, it is unclear whether it affects the malignant behavior of cervical cancer (CC) cells. METHODS: CERS6-AS1 and miR-195-5p expression was estimated in CC via qRT-PCR. CCK-8, caspase-3 activity, scratch, and Transwell assays were performed to detect CC cell viability, caspase-3 activity, migration, and invasion in vitro ...

OBJECTIVE: Unstable hemoglobinopathy (UH), red blood cell membrane disease (MD), and red blood cell enzymopathy are known as major congenital hemolytic anemias. Specialized examinations are needed for their differential diagnosis. We hypothesized that simultaneous measurements of HbA1c levels using high-performance liquid chromatography (HPLC) by fast mode (FM) and immunoassay [HPLC (FM)-HbA1c and IA-HbA1c, respectively] are useful for the differential diagnosis of UH from other congenital hemolytic anemias and verified this hypothesis in this study...

OBJECTIVE: To identify the clinical characteristics and tissue CD56 expression pattern in patients with multiple myeloma (MM) with bone-related extramedullary disease (b-EMD), not connected to or isolated from the bone marrow. METHODS: We reviewed consecutive patients with MM hospitalised at the First Affiliated Hospital of Fujian Medical University between 2016 and 2019. Patients with b-EMD were identified, and the clinical and laboratory features of patients with and without b-EMD were compared...

No abstract text is available yet for this article.

Congenital tuberculosis is rare and carries a high mortality rate. In this study, we report a case of congenital pulmonary tuberculosis in a very low birth weight of 1310g neonate born at the gestational age of 30 weeks 4 days. The mother of the patient had a fever a week before the delivery, and her symptoms improved after taking antibiotics. At the 9th day after birth, the neonate developed a fever, there was no improvement after the administration of antibiotics. Considering the maternal history and clinical suspicion of tuberculosis, we performed a series of screening tests and congenital pulmonary tuberculosis was diagnosed...

OBJECTIVE: Non-small cell lung cancer (NSCLC) is recognized as one of the primary causes of global cancer-related mortality. Long noncoding RNAs (lncRNAs) participate in NSCLC cell progression. This study probed the potential mechanism of lncRNA small nucleolar RNA host gene 12 (SNHG12) in cisplatin (DDP)-resistance in NSCLC cells. METHODS: The intracellular expressions of SNHG12, miR-525-5p, and XIAP were examined via reverse-transcription quantitative polymerase chain reaction (RT-qPCR)...

OBJECTIVE: Being a prevalent endocrine and metabolic disease, polycystic ovary syndrome (PCOS) severely threatens women's physical and mental health. Glioma-associated oncogene family zinc finger 2 (GLI2) expression is up-regulated in granulosa cells of PCOS patients, but its specific role in PCOS remains unclear. METHODS: Following the treatment of human ovarian granulosa cells (KGN) with dihydrotestosterone (DHT), RT-qPCR and western blot were utilized to check GLI2 expression...

OBJECTIVE: Flap endonuclease 1 (FEN1) has been confirmed to involve the drug resistance of multiple cancers including breast cancer. However, the effect of miRNA-mediated FEN1 on breast cancer cell resistance is still ambiguous and needs further research. METHODS: Firstly, we used GEPIA2 to predict the FEN1 expression in breast cancer. Next, we used quantitative real-time polymerase chain reaction (qRT-PCR) and western blot to evaluate the FEN1 level of cells. After parental cells or MDA-MB-231-paclitaxel (PTX) cells being transfected with or without siFEN1, the apoptosis, migration, and protein levels of FEN1, Bcl-2, and resistance-related genes were examined by flow cytometry, wound healing assay, and western blot, respectively...

No abstract text is available yet for this article.

OBJECTIVE: To understand the geopolitics of the supply of fentanyl and heroin. RESULTS: In our practice, the percent of fentanyl positive drug tests increased from years 2016 to 2022, but heroin positive drug tests decreased by 80% in the same period. CONCLUSION: Fentanyl has replaced heroin as a street drug for opioid dependent drug users.

OBJECTIVE: Long noncoding RNAs (lncRNAs) are crucial regulators of lung adenocarcinoma (LUAD) progression. Herein, we explored the role of miR-490-3p and the underlying molecular mechanism involving key lncRNAs and pathways in LUAD. METHODS: Reverse transcription-quantitative PCR (RT-qPCR) was performed to detect the expression of lncRNA NEAT1 and miR-490-3p in LUAD cells and tissues. Western blotting was used to determine protein expression levels of the Ras homologous gene family member A/Rho-related protein kinase (RhoA/ROCK) signal pathway marker...

OBJECTIVE: Various renal cell carcinomas (RCC) are derived from different segments of the renal tubular origin, which determines their morphological and immunohistochemical phenotype and their molecular signaling pathway as a therapeutic target. Most of these tumors utilize the mammalian target of rapamycin (mTOR) pathway to activate pathways involving metabolic and nutritional supplies. METHODS: Overexpressed mTOR signals are reported in more than 90% of the most common types of RCC...

OBJECTIVE: This study aimed to examine the function of long non-coding RNA HAND2 antisense RNA 1 (HAND2-AS1) in colorectal cancer (CRC) and explore its underlying mechanism of action. METHODS: HAND2-AS1, microRNA (miR)-3118, and leptin receptor (LEPR) levels were determined using western blot analysis and reverse transcription quantitative polymerase chain reaction (RT-qPCR). RNA-binding protein immunoprecipitation (RIP) and luciferase reporter assays were performed to evaluate the relationship between HAND2-AS1, miR-3118, and LEPR...

OBJECTIVE: Cervical cancer is one of the leading causes of cancer-related death in women, which has been shown to be associated with the deregulation of circular RNAs (circRNAs). The aim of this study was to determine the role of circRNA cyclin B1 (circCCNB1) in cervical cancer. METHODS: The expression of circCCNB1, microRNA-370-3p (miR-370-3p), and SRY-box transcription factor 4 (SOX4) mRNA was detected by quantitative real-time PCR (qPCR). Functional experiments, including colony formation assay, EdU assay, transwell assay and flow cytometry assay, were performed...

OBJECTIVE: Tripartite motif-containing protein 9 (TRIM9) has been studied in several human tumors. MicroRNA-218-5p (miR-218-5p) was predicted to target TRIM9. We aimed to investigate the roles of miR-218-5p/TRIM9 axis in non-small cell lung cancer (NSCLC). METHODS: TRIM9 and miR-218-5p expression levels in NSCLC tissues and cell lines (95D and H1299) were determined by reverse transcription quantitative PCR. UALCAN and Kaplan-Meier (KM) plotter were employed to analyze the expression level of TRIM9 in lung cancer...

OBJECTIVE: Concurrent infection with COVID-19 and M. tuberculosis has been reported to be more severe than either alone, resulting in increased mortality. Our objective was to define the shared pathobiology of COVID-19 and the developmental stage of TB in the lung and explore adjunctive therapies to treat such commonalities. METHODS: Since morphoproteomics combines the disciplines of histopathology, molecular biology and protein chemistry to paint a portrait of the protein circuitry in diseased cells for the purpose of uncovering targets amenable to specific intervention [1], we used morphoproteomic analyses to study lung tissues of patients with early post-primary tuberculosis or COVID-19 infection...

OBJECTIVE: MacConkey agar (MAC) is commonly used as a primary medium for conventional bacterial identification in clinical microbiology laboratories. Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) has revolutionized microbial identification and is considered a reliable identification tool. While conventional identification methods rely on colony characteristics, MALDI-TOF MS requires a pure isolate on a solid medium. METHODS: This study investigated whether MAC can be omitted as a routine inoculation medium for urine, lower respiratory tract (LRT), and positive blood culture samples...