General Laboratory Research Articles

Development and Implementation of a Research-Preparative General Chemistry Laboratory Course: Chemistry of Beverages

Development and Implementation of a Research-Preparative General Chemistry Laboratory Course: Chemistry of Beverages

The risk factors in diabetic foot ulcers and predictive value of prognosis of wound tissue vascular endothelium growth factor

Diabetic foot ulcer (DFU) is a leading cause of high-level amputation in DM patients, with a low wound healing rate and a high incidence of infection. Vascular endothelial growth factor (VEGF) plays an important role in diabetes mellitus (DM) related complications. This study aims to explore the VEGF expression and its predictive value for prognosis in DFU, in order to provide basis for the prevention of DFU related adverse events. We analyzed 502 patients, with 328 in healing group and 174 in non-healing/recurrent group. The general clinical data and laboratory indicators of patients were compared through Spearman correlation analysis, ROC analysis and logistic regression analysis. Finally, the independent risk factors for adverse prognosis in DFU patients were confirmed. Spearman analysis reveals a positive correlation between the DFU healing rate and ABI, VEGF in wound tissue, and positive rate of VEGF expression, and a negative correlation with DM duration, FPG, HbA1c, TC, Scr, BUN, and serum VEGF. Further logistic regression analysis finds that the DM duration, FPG, HbA1c, ABI, serum VEGF, VEGF in wound tissue, and positive rate of VEGF expression are the independent risk factors for adverse prognosis in DFU (p < 0.05). DM duration, FPG, HbA1c, ABI, serum VEGF, VEGF in wound tissue, and positive rate of VEGF expression are the independent risk factors for prognosis in DFU patients. Patients with these risk factors should be screened in time, which is of great significance to prevent DFU related adverse events and improve outcomes.

General Applicability of Existing College of American Pathologists Accreditation Requirements to Clinical Implementation of Machine Learning-Based Methods in Molecular Oncology Testing.

The College of American Pathologists (CAP) accreditation requirements for clinical laboratory testing help ensure laboratories implement and maintain systems and processes that are associated with quality. Machine learning (ML)-based models share some features of conventional laboratory testing methods. Accreditation requirements that specifically address clinical laboratories' use of ML remain in the early stages of development. To identify relevant CAP accreditation requirements that may be applied to the clinical adoption of ML-based molecular oncology assays, and to provide examples of current and emerging ML applications in molecular oncology testing. CAP accreditation checklists related to molecular pathology and general laboratory practices (Molecular Pathology, All Common and Laboratory General) were reviewed. Examples of checklist requirements that are generally applicable to validation, revalidation, quality management, infrastructure, and analytical procedures of ML-based molecular oncology assays were summarized. Instances of ML use in molecular oncology testing were assessed from literature review. Components of the general CAP accreditation framework that exist for traditional molecular oncology assay validation and maintenance are also relevant for implementing ML-based tests in a clinical laboratory. Current and emerging applications of ML in molecular oncology testing include DNA methylation profiling for central nervous system tumor classification, variant calling, microsatellite instability testing, mutational signature analysis, and variant prediction from histopathology images. Currently, much of the ML activity in molecular oncology is within early clinical implementation. Despite specific considerations that apply to the adoption of ML-based methods, existing CAP requirements can serve as general guidelines for the clinical implementation of ML-based assays in molecular oncology testing.

Arterial stiffness in non-alcoholic fatty liver disease

Background. The presence of metabolic-associated pathology, namely obesity, diabetes mellitus, dyslipidemia, and non-alcoholic fatty liver disease (NAFLD), significantly accelerates the development of the cardiovascular continuum. This is associated with an increased risk of major cardiovascular events (myocardial infarction, stroke). An important organ damage in hypertension (HTN) is the remodeling of small arteries and an increase in stiffness of large arteries. The relationship between NAFLD, dyslipidemia, hypertriglyceridemia, obesity (especially abdominal), diabetes, and HTN is well studied, but there is a lack of clinical studies examining changes in arterial stiffness in NAFLD. Aim of the research was to study the parameters of arterial stiffness in patients with NAFLD. Materials and methods. Eighty-two Caucasian patients with NAFLD (mean age (56.8 ± 1.1) years, 59.8 % men) were enrolled. Participants were divided into two groups: group 1 (n = 44) — NAFLD and concomitant HTN, group 2 (n = 38) — HTN without NAFLD. All patients underwent a standard general clinical examination, laboratory and instrumental work-up. In addition, all patients were assessed for the parameters of arterial stiffness via non-invasive arteriography. Results. Patients with NAFLD had significantly higher office systolic and diastolic blood pressure (by 15.2 and 10.4 %, respectively, p &lt; 0.01) despite comparable drug therapy. The same trends were observed in relation to the central aortic pressure, which was 19.3 % higher in patients with NAFLD (p &lt; 0.01), and central pulse pressure that was 35.9 % higher than in patients without NAFLD (p &lt; 0.01). Brachial artery augmentation index in NAFLD turned to be elevated compared to patients without NAFLD (p &lt; 0.01), but aortic augmentation index was comparable between groups. The return time interval in group 1 was 50.3 % higher than in group 2 (p &lt; 0.01). Finally, patients with NAFLD had a significant increase in pulse wave velocity by 52.3 % compared to those without NAFLD with average value exceeding 12 m/sec (p &lt; 0.01). Conclusions. There is an association between NAFLD and worse indices of arterial stiffness in patients with concomitant HTN.

Development and validation of a LASSO prediction model for cisplatin induced nephrotoxicity: a case-control study in China

BackgroundEarly identification of high-risk individuals with cisplatin-induced nephrotoxicity (CIN) is crucial for avoiding CIN and improving prognosis. In this study, we developed and validated a CIN prediction model based on general clinical data, laboratory indications, and genetic features of lung cancer patients before chemotherapy.MethodsWe retrospectively included 696 lung cancer patients using platinum chemotherapy regimens from June 2019 to June 2021 as the traing set to construct a predictive model using Absolute shrinkage and selection operator (LASSO) regression, cross validation, and Akaike’s information criterion (AIC) to select important variables. We prospectively selected 283 independent lung cancer patients from July 2021 to December 2022 as the test set to evaluate the model’s performance.ResultsThe prediction model showed good discrimination and calibration, with AUCs of 0.9217 and 0.8288, sensitivity of 79.89% and 45.07%, specificity of 94.48% and 94.81%, in the training and test sets respectively. Clinical decision curve analysis suggested that the model has value for clinical use when the risk threshold ranges between 0.1 and 0.9. Precision-Recall (PR) curve shown in recall interval from 0.5 to 0.75: precision gradually declines with increasing Recall, up to 0.9.ConclusionsPredictive models based on laboratory and demographic variables can serve as a beneficial complementary tool for identifying high-risk populations with CIN.

How to diagnose GERC more effectively: reflections on post-reflux swallow-induced peristaltic wave index and mean nocturnal baseline impedance

IntroductionPost-reflux swallow-induced peristaltic wave index (PSPWI) and mean nocturnal baseline impedance (MNBI) are novel parameters reflect esophageal clearance capacity and mucosal integrity. They hold potential in aiding the recognition of gastroesophageal reflux-induced chronic cough (GERC). Our study aims to investigate their diagnostic value in GERC.MethodsThis study included patients suspected GERC. General information and relevant laboratory examinations were collected, and final diagnosis were determined following guidelines for chronic cough. The parameters of multichannel intraluminal impedance-pH monitoring (MII-pH) in patients were analyzed and compared to explore their diagnostic value in GERC.ResultsA total of 186 patients were enrolled in this study. The diagnostic value of PSPWI for GERC was significant, with the area under the working curve (AUC) of 0.757 and a cutoff value of 39.4%, which was not statistically different from that of acid exposure time (AET) (p > 0.05). The combined diagnostic value of AET > 4.4% and PSPWI < 39.4% was superior to using AET > 4.4% alone (p < 0.05). Additionally, MNBI and distal MNBI also contributed to the diagnosis of GERC, with AUC values of 0.639 and 0.624, respectively. AET > 4.4% or PSPWI < 39.4% is associated with a 44% reduction in missed diagnoses of non-acid GERC compared to AET > 6.0% or symptom association probability (SAP) ≥ 95%, and may be more favorable for identifying GERC.ConclusionThe diagnostic value of PSPWI for GERC is comparable to that of AET. Combining PSPWI < 39.4% or AET > 4.4% can improve the diagnostic efficiency by reducing the risk of missed diagnoses in cases where non-acid reflux is predominant. Distal MNBI and MNBI can serve as secondary reference indices in the diagnosis of GERC.

Synthesis and characterization of cellulose Grewia optiva yarn and woven mat using an alkali solution

PurposeThe production of commodities from renewable organic material has gained enormous interest due to the rising public understanding of conscious development. Natural fibers are accessible in environment, and their parameters depend on their physical traits and chemically engineered makeup. Grewia optiva (GO) comes under the category of bast fibers, also known as Bhimal. This study aims to realize the consequences of alkali treatment on the characterization of natural fibers, their developed yarn and then the woven mat.Design/methodology/approachRaw fiber was treated with 20% alkali solution. After treatment, it was evaluated for changes in the general laboratory system. This treatment is known as mercerization, through which the parameters of cellulose fibers can be enhanced. After this process, the content of cellulose increases due to the removal of the hydroxyl group. The removal of microfibrils, hemicellulose and the introduction of hydrogen bonds increase the interactive capacity of fiber. The job was divided into different sections, including acquiring fiber, developing yarn and creating a mat.FindingsThe quality of the surface of the fiber was enhanced after the treatment. Its diameter was reduced to 54.72 microns. In the developed woven mat, it was densified using water treatment and attained grams per square meter (GSM) of 389.7.Originality/valueThe usage of mercerization softens the fiber to twist into yarn, which is finally woven into a mat. Treatment of fabric or mat makes it denser to impart better strength. A woven mat of natural fibers provides maximum strength to the composites.

Clinical characteristics and prognosis of 227 children with acute pancreatitis

To analyze the clinical characteristics and prognosis of acute pancreatitis (AP) in children, and provide reference for clinical prevention and treatment of AP in children. Based on the electronic medical record system of the Affiliated Hospital of Zunyi Medical University, the clinical data of children with AP in the hospital from January 2011 to December 2020 were retrospectively analyzed. According to the severity of the disease, the children were divided into mild acute pancreatitis (MAP) group and severe acute pancreatitis (SAP) group. The general data, laboratory tests and outcomes indicators of the two groups were collected and compared. The epidemiological characteristics of children with AP were analyzed. Multivariate Logistic regression was used to analyze the risk factors of SAP in children. A total of 227 children with AP were enrolled, including 161 in MAP group and 66 in SAP group. The median age of children with AP was 12.00 (8.00, 16.00) years old, and 126 cases (55.51%) were male. The main initial clinical symptoms were abdominal pain, nausea, vomiting and abdominal distension (97.36%, 61.67% and 14.10%, respectively), 21 cases (9.25%) were admitted to intensive care unit (ICU), and 4 cases (1.76%) died in hospital due to sepsis, multiple organ dysfunction or traumatic shock. The epidemiological characteristics showed that the first onset age of AP was mainly 7-17 years old (85.02%); the main etiologies were biliary tract disease (29.96%), viral infection (29.07%) and idiopathic factors (19.82%). From 2011 to 2020, the number of children with AP showed a fluctuating trend, and from 2018 to 2020, the number of children with AP increased for three consecutive years. Compared with MAP group, the age of SAP group was significantly older, the proportion of female, the proportion of rural source, acute physiology and chronic health evaluation II (APACHE II), body mass index (BMI), and the levels of white blood cell count (WBC), C-reactive protein (CRP), hospitalization expenses, the proportion of AP caused by traumatic factors and drug factors in SAP group were significantly higher (all P < 0.05). The level of blood calcium and the proportion of AP caused by virus infection were significantly lower, and the length of hospital stay in SAP group was significantly longer (all P < 0.05). The multivariate Logistic regression analysis showed that APACHE II score [odds ratio (OR) = 1.495, 95% confidence interval (95%CI) was 1.293-1.728] and age (OR = 1.352, 95%CI was 1.182-1.546) were closely related to SAP in children (all P < 0.001). Children with AP mostly occurs in preschool and adolescence, and the overall mortality is relatively low; biliary tract disease, viral infection and idiopathic factors are common causes; APACHE II score and age may be risk factors for SAP in children.

Analysis of Risk Factors for Urinary Tract Infections in Pregnant Women: A Retrospective Study.

Urinary tract infections (UTIs) are the most common bacterial infection during pregnancy. This study aimed to investigate the risk factors of UTI during pregnancy. In this study, pregnant women who underwent prenatal examination in our hospital from October 2019 to October 2023 were divided into UTI group and non-UTI group in accordance with whether or not they had a UTI. The general data, clinical data and laboratory indicators of the participants were collected. Multivariate logistic regression was used to analyse the influencing factors of UTI in pregnant women, and the results were shown with odds ratio (OR) and 95% confidence interval (95% CI). A total of 600 pregnant women were included in the study. The results found that 56 women (9.33%) had a combined UTI. The results of midstream urinary bacterial culture in the UTI group showed that Gram-negative bacteria accounted for 60.71% of all detected pathogenic bacteria, and Escherichia coli and Staphylococcus aureus were common strains, accounting for 46.43% and 23.21%, respectively. The proportions of patients in the UTI group who were ≥35 years old, had a high school education or below, had a history of abortion, had gestational diabetes, had ≥three vaginal and anal examinations, had a history of UTI and had urinary tract stones were significantly higher than the non-UTI group (p < 0.05). Multivariate logistic regression analysis showed that age ≥35 years (OR = 9.127; 95% CI: 4.668-17.810; p < 0.001), educational level of high school or lower (OR = 4.184; 95% CI: 2.448-7.160; p < 0.001), gestational diabetes (OR = 3.494; 95% CI: 1.789-6.803; p < 0.001), UTI history (OR = 2.074; 95% CI: 1.114-3.834; p < 0.001) and haemoglobin (Hb) <100 g/L (OR = 8.022; 95% CI: 4.532-14.325; p < 0.001) are risk factors for UTI in pregnant women. The common pathogenic bacteria of pregnant women with UTI are mainly Gram-negative bacteria. Older pregnant women, low educational level, gestational diabetes mellitus, history of UTI and anaemia may be risk factors for UTI in pregnant women.

Clinical Significance of Serum ADA Combined with GLB, CREA, β2-MG and HGB in Newly Diagnosed Multiple Myeloma

To investigate the role of serum adenosine deaminase (ADA) combined with globulin (GLB), creatinine (CREA), β2-microglobulin (β2-MG) and hemoglobin (HGB) in the initial screening of multiple myeloma (MM), in order to reduce missed diagnosis and misdiagnosis of MM. A retrospective analysis was performed on 62 newly diagnosed multiple myeloma (NDMM) patients who were admitted to the Department of Hematology of the First Affiliated Hospital of Chengdu Medical College from April 2018 to December 2021, and 33 patients with benign hematologic diseases and 30 healthy subjects were selected as the control group. The expression of ADA in pan-cancer was analyzed using TCGA and GTEx databases. The general data and laboratory indicators of the subjects were collected, and the differences of ADA activity and other laboratory indicators in each group were compared. The relationship between serum ADA activity and clinical data of NDMM patients was analyzed. The changes of ADA activity before and after chemotherapy in NDMM patients and the differences of ADA activity in NDMM patients with different DS and ISS stages were compared. Multivariate logistic regression was used to analyze the risk factors of NDMM. The receiver operating characteristic(ROC) curve was used to evaluate the diagnostic efficacy of ADA and other laboratory indicators in MM. Bioinformatics method was used to analyze the co-expression networks and enrichment pathways of ADA. ADA level was significantly upregulated in tissues of 14 types of cancer in TCGA database, and ADA was highly expressed in 11 types of cancer in TCGA combined with GTEx databases. The serum levels of ADA, GLB, uric acid (UA), cystatin C (CysC) and β2-MG in the NDMM group were significantly higher than those in benign hematologic disease group and healthy control group ( P < 0.05), while the levels of ALB and the value of albumin to globulin ratio (A∶G) in the NDMM group were significantly lower than those in the other two groups ( P < 0.001). There were significant differences in DS stage (P =0.036), ISS stage (P =0.019) and the levels of CREA (P =0.036), UA (P =0.034), β2-MG (P =0.019) in NDMM patients with different ADA activity levels. After primary chemotherapy, ADA activity and β2-MG concentration were decreased in NDMM patients ( P < 0.01). The comparison results of patients in different stages showed that ADA activity of patients in DS stage I+II was significantly lower than that of patients in DS stage III (P <0.05), and ADA activity of patiens in ISS stage I+II was significantly lower than that of patients in ISS stage III ( P < 0.01). Multivariate logistic regression analysis showed that increased GLB, increased ADA activity, increased CREA, increased β2-MG and decreased HGB were independent risk factors for NDMM. The area under the curve (AUC) of ADA in the diagnosis of MM was 0.847, and the AUC of ADA combined with GLB, CREA, β2-MG and HGB in the diagnosis of MM was 0.940. The results of co-expression network and enrichment pathway analysis showed that ADA bounded to 20 proteins and it was significantly associated with the metabolic pathways of purine, pyrimidine, nicotinate and nicotinamide. The detection of ADA activity in serum is of positive significance for the auxiliary diagnosis, therapeutic evaluation and monitoring the progress of NDMM patients. ADA combined with GLB, CREA, β2-MG and HGB can improve the detection rate of MM, and reduce missed diagnosis and misdiagnosis to a certain extent.

Comparison of the Value of Four Objective Nutritional Indices in Assessing the Long-Term Prognosis of Elderly Patients with Heart Failure with Preserved Ejection Fraction.

The long-term prognosis of heart failure with preserved ejection fraction (HFpEF) is influenced by malnutrition. Currently, there's a deficit in objective and comprehensive nutritional assessment methods to evaluate the nutritional status and predicting the long-term outcomes of HFpEF patients. Our retrospective study included two hundred and eighteen elderly HFpEF patients admitted to the cardiovascular ward at the Air Force Medical Centre from January 2016 to December 2021. Based on follow-up outcomes, patients were categorized into all-cause death (99 cases) and Survival (119 cases) groups. We compared general data, laboratory results, and nutritional indexes between groups. Differences in subgroups based on Triglyceride-Total Cholesterol-Body Weight Index (TCBI), Geriatric Nutritional Risk Index (GNRI), Prognostic Nutritional Index (PNI), and Controlled Nutrition Score (CONUT) were analyzed using Kaplan-Meier survival curves and log-rank test. COX regression was used to identify all-cause mortality risk factors, and the predictive accuracy of the four nutritional indices was assessed using receiver operating characteristic (ROC) curves and Delong test analysis. A total of 101 (45.41%) HFpEF patients experienced all-cause mortality during 59.02 1.79 months of follow-up. The all-cause mortality group exhibited lower GNRI and PNI levels, and higher CONUT levels than the Survival group (p 0.05). Kaplan-Meier analysis revealed lower cumulative survival in the low GNRI ( 96.50) and low PNI ( 43.75) groups, but higher in the low CONUT ( 2) group, compared to their respective medium and high-value groups. Multifactorial COX regression identified low PNI ( 43.75) as an independent all-cause mortality risk factor in elderly HFpEF patients. ROC and Delong's test indicated PNI (area under the curve [AUC] = 0.698, 95% confidence interval [CI] 0.629-0.768) as a more effective predictor of all-cause mortality than TCBI (AUC = 0.533, 95% CI 0.456-0.610) and CONUT (AUC = 0.621, 95% CI 0.547-0.695; p 0.05). However, there was no significant difference compared to GNRI (AUC = 0.663, 95% CI 0.590-0.735; p 0.05). In elderly HFpEF patients a PNI 43.75 was identified as an independent risk factor for all-cause mortality. Moreover, PNI demonstrates superior prognostic performance in predicting all-cause mortality in elderly patients with HFpEF when compared to TCBI, GNRI, and COUNT.

Predictive value of monocyte-to-high-density lipoprotein-cholesterol ratio (MHR) for poor prognosis after intravenous thrombolytic therapy for acute ischaemic stroke

IntroductionThe purpose of this study was to examine the relationship between monocyte-to-high-density lipoprotein-cholesterol ratio (MHR) and poor short-term 3-month and long-term 6-month prognosis after intravenous thrombolysis in patients with acute ischaemic stroke.Material and methodsBy retrospective analysis, 763 eligible patients with acute ischaemic stroke with intravenous thrombolysis were included in the study, and the general data and clinical laboratory examination results of the patients were collected. The relationship between MHR and poor prognosis at 3 and 6 months in patients with intravenous thrombolysis was derived by stepwise regression using the R language, followed by 1:1 propensity score matching to determine the MHR threshold and to investigate the relationship between high and low MHR values and poor prognosis.ResultsMHR level was found to predict the prognosis of intravenous thrombolysis patients with acute ischaemic stroke, and it was an effective predictor of poor prognosis at 3 and 6 months after intravenous thrombolysis. MHR has a threshold of 0.584. High MHR levels were strongly associated with a poor 3-month prognosis of intravenous thrombolysis in patients with acute ischaemic stroke (OR = 5.657; 95% CI: 4.124–7.762; p &lt; 0.001). High MHR level was closely associated with poor prognosis of acute ischaemic stroke patients with intravenous thrombolysis at 6 months (OR = 4.923; 95% CI: 3.603–6.726; p &lt; 0.001).ConclusionsMHR level is a valid predictor for poor prognosis at 3-6 months after intravenous thrombolysis in patients in acute ischaemic stroke.

#2475 Glomerulonephritis associated with anti -TNF-α therapy

Abstract Background and Aims Biologic agents like tumor necrosis factor α inhibitors/ anti-TNF-α/, IL6 and CD80/26 are widely used in many rheumatologic diseases but these may also elicit effects on renal function. These drugs, as well as rheumatic diseases themselves, can cause autoimmune renal disorders. Though effective on the main inflammatory process the incidence of kidney injury associated with their administration is increasing. Various forms of glomerulopathies have been described in connection with biological therapy - proliferative lupus nephritis, oligo immune necrotizing crescentic glomerulonephritis, membranous glomerulonephritis, IgA nephropathy and others. Method We report the clinical and pathologic findings in two patients with Rheumatoid arthritis and Ankylosing spondylitis on biologic therapy with an anti-TNF-α agent. During the treatment they presented with nephritic syndrome requiring kidney histology. Results Case 1: The first patient is a 52-year-old man diagnosed with ankylosing spondylitis, HLA-B27 positive, 15 years before admission. Four years before admission treatment with Golimumab /anti-TNF-α/ has been initiated. During the follow-up period urine tests revealed proteinuria and hematuria, which required more detailed tests. The patient presented with clinical features of nephritic syndrome, marked lower extremity edema, hematuria, nephrotic range proteinuria, impaired hypertension control. Kidney biopsy revealed membranoproliferative glomerulonephritis. It was assumed that kidney injury was most likely associated with Golimumab therapy. Its administration was discontinued, and therapy was started with pulses of Methylprednisolone 500 mg i.v. in three consecutive days, Cyclophosphamide 500 mg i.v., repeated the second and third month, followed by low steroid doses 0,5 mg/kg with gradual tapering. Mycophenolate Mofetil 1500 mg was started from the third month. General condition and laboratory results improved considerably. The occurrence of stiffness and pain in the sacroiliac joints several months after stopping biologic treatment necessitated the inclusion of Sulfasalazine to the therapy. Initiation of therapy with another class of biologic agent, Anti-IL-17 monoclonal antibody, was discussed with the follow-up rheumatologists. Case 2: The second patient is a 66-year-old woman, with a history of hypertension and essential thrombocythemia, who was diagnosed with seropositive rheumatoid arthritis 3 years before admission, treated with Adalimumab /anti-TNF-α/. Follow-up examinations revealed low-grade proteinuria, hematuria and impaired renal function. Kidney biopsy revealed IgA nephropathy. Following the discontinuation of Adalimumab, the patient was treated with pulses of Methylprednisolone 500 mg i.v. in three consecutive days, Cyclophosphamide 500 mg i.v., repeated the second and third month, followed by low steroid doses 0,5 mg/kg with gradual tapering. Kidney function significantly improved at the third month of treatment and proteinuria was gradually reduced. Initiation of Rituximab /antiCD20/ treatment was discussed with rheumatologists. Conclusion Treatment with biological drugs can cause immune-mediated glomerular disorder/IGD/. These events are rare, and the causative effects of a specific drug is hard to establish. When a patient is suspected of having an IGD, kidney biopsy should be performed for the exact diagnosis. The drug should be discontinued, and the treatment for the new-onset renal disorder should be promptly started. A rechallenge test of the same or a similar drug should be avoided, whereas switching to a different therapy is a reasonable option.

A Study Examining the Students Satisfaction in Higher Education: The Case of Bahauddin Zakariya University, Pakistan

This study measures the level of student satisfaction with the current services offered by Pakistani universities. The exploration and comparison of possibilities differences in levels of satisfaction between genders and between various programs/disciplines formulate key objectives. A general survey guided by a questionnaire well-structured was administered via collusion sampling to a significant sample of 401 students. Bahauddin Zakariya University (BZU) was selected as a sample case and data were collected from eighteen different disciplines and/or programs. Ten main buildings, i.e. teaching, support administrative/management, transport, library, computer labs and general laboratories, accommodation, healthcare; Sports, prayer facilities/religious and classrooms. The average analysis reflects that students are dissatisfied with many important services and facilities such as teaching, administrative support, library, workshops, accommodation, healthcare and sports, while satisfaction was reported only in three areas such as transport, classrooms and places of prayer. It's interesting note that no significant differences in opinion were recorded between male and female respondents. Overall, the satisfaction level is alarmingly low and the findings indicate university students' dissatisfaction with educational services offered by Pakistani universities.

Non-specific uptake of 18F-FAPI-04 in the pancreas and its related factors: a post-hoc analysis of an ongoing prospective clinical trial

This study aimed to analyze the characteristics of the non-specific uptake (NSU) of 18F-labeled fibroblast activation protein inhibitor (18F-FAPI) of the pancreas and investigate the related factors. Totally, 78 patients who underwent both 18F-fluorodeoxyglucose (FDG) and 18F-FAPI PET/CT examinations were divided into normal (n = 53) and NSU (n = 25) groups. The differences in general information, medical history, laboratory indexes and uptake were compared. Receiver operating characteristic (ROC) curves were used to analyze the optimal cut-off values. The correlations between 18F-FAPI-SUVmax and blood cell analysis, liver function indexes, tumor markers, and inflammatory indices were analyzed. The logistic regression model was used to estimate the independent factors. Both 18F-FAPI (4.48 ± 0.98 vs. 2.01 ± 0.53, t = 11.718, P < 0.05) and 18F-FDG (2.23 ± 0.42 vs. 2.02 ± 0.44, t = 2.036, P = 0.045) showed significantly higher in NSU group. Patients in the NSU group tended to be complicated with a history of drinking (P = 0.034), chronic liver diseases (P = 0.006), and surgery of gastrectomy (P = 0.004). ROC analysis showed cutoff values of 3.25 and 2.05 for 18F-FAPI and 18F-FDG in identifying the NSU. Patients in the NSU group showed less platelet count, higher platelet volume, higher total bilirubin, direct or indirect bilirubin (P < 0.05). Platelet count, platelet crit, large platelet ratio, aspartate aminotransferase (AST), α-l-fucosidase, and total, direct or indirect bilirubin were correlated with 18F-FAPI-SUVmax (P < 0.05). AST [1.099 (1.014, 1.192), P = 0.021] and total bilirubin [1.137 (1.035, 1.249), P = 0.007] were two independent factors in the step forward logistic regression, and platelet/% [1.079 (1.004, 1.160), P = 0.039] and total bilirubin [1.459 (1.016, 2.095), P = 0.041] were two independent factors in the step backward logistic regression for the prediction of pancreatic uptake of 18F-FAPI. 18F-FAPI-PET/CT was better than 18F-FDG in predicting the pancreatic NSU, and NSU is related to a history of drinking, chronic liver diseases, gastrectomy, heteromorphic platelet, and impaired liver function.

Predicting mixed venous oxygen saturation (SvO2) impairment in COPD patients using clinical-CT radiomics data: A preliminary study.

Chronic obstructive pulmonary disease (COPD) is one of the most common chronic airway diseases in the world. To predict the degree of mixed venous oxygen saturation (SvO2) impairment in patients with COPD by modeling using clinical-CT radiomics data and to provide reference for clinical decision-making. A total of 236 patients with COPD diagnosed by CT and clinical data at Xiangyang No. 1 People's Hospital (n= 157) and Xiangyang Central Hospital (n= 79) from June 2018 to September 2021 were retrospectively analyzed. The patients were divided into group A (SvO⩾2 62%, N= 107) and group B (SvO<2 62%, N= 129). We set up training set and test set at a ratio of 7/3 and time cutoff spot; In training set, Logistic regression was conducted to analyze the differences in general data (e.g. height, weight, systolic blood pressure), laboratory indicators (e.g. arterial oxygen saturation and pulmonary artery systolic pressure), and CT radiomics (radscore generated using chest CT texture parameters from 3D slicer software and LASSO regression) between these two groups. Further the risk factors screened by the above method were used to establish models for predicting the degree of hypoxia in COPD, conduct verification in test set and create a nomogram. Univariate analysis demonstrated that age, smoking history, drinking history, systemic systolic pressure, digestive symptoms, right ventricular diameter (RV), mean systolic pulmonary artery pressure (sPAP), cardiac index (CI), pulmonary vascular resistance (PVR), 6-min walking distance (6MWD), WHO functional classification of pulmonary hypertension (WHOPHFC), the ratio of forced expiratory volume in the first second to the forced vital capacity (FEV1%), and radscore in group B were all significantly different from those in group A (P< 0.05). Multivariate regression demonstrated that age, smoking history, digestive symptoms, 6MWD, and radscore were independent risk factors for SvO2 impairment. The combined model established based on the abovementioned indicators exhibited a good prediction effect [AUC: 0.903; 95%CI (0.858-0.937)], higher than the general clinical model [AUC: 0.760; 95%CI (0.701-0.813), P< 0.05] and laboratory examination-radiomics model [AUC: 0.868; 95%CI (0.818-0.908), P= 0.012]. The newly created nomogram may be helpful for clinical decision-making and benefit COPD patients. SvO2 is an important indicator of hypoxia in COPD, and it is highly related to age, 6MWD, and radscore. The combined model is helpful for early identification of SvO2 impairment and adjustment of COPD treatment strategies.

Prediction of hospital-acquired influenza using machine learning algorithms: a comparative study

BackgroundHospital-acquired influenza (HAI) is under-recognized despite its high morbidity and poor health outcomes. The early detection of HAI is crucial for curbing its transmission in hospital settings.AimThis study aimed to investigate factors related to HAI, develop predictive models, and subsequently compare them to identify the best performing machine learning algorithm for predicting the occurrence of HAI.MethodsThis retrospective observational study was conducted in 2022 and included 111 HAI and 73,748 non-HAI patients from the 2011–2012 and 2019–2020 influenza seasons. General characteristics, comorbidities, vital signs, laboratory and chest X-ray results, and room information within the electronic medical record were analysed. Logistic Regression (LR), Random Forest (RF), Extreme Gradient Boosting (XGB), and Artificial Neural Network (ANN) techniques were used to construct the predictive models. Employing randomized allocation, 80% of the dataset constituted the training set, and the remaining 20% comprised the test set. The performance of the developed models was assessed using metrics such as the area under the receiver operating characteristic curve (AUC), the count of false negatives (FN), and the determination of feature importance.ResultsPatients with HAI demonstrated notable differences in general characteristics, comorbidities, vital signs, laboratory findings, chest X-ray result, and room status compared to non-HAI patients. Among the developed models, the RF model demonstrated the best performance taking into account both the AUC (83.3%) and the occurrence of FN (four). The most influential factors for prediction were staying in double rooms, followed by vital signs and laboratory results.ConclusionThis study revealed the characteristics of patients with HAI and emphasized the role of ventilation in reducing influenza incidence. These findings can aid hospitals in devising infection prevention strategies, and the application of machine learning-based predictive models especially RF can enable early intervention to mitigate the spread of influenza in healthcare settings.

LEVELS OF MICRO RNA-21-3R IN THE BLOOD OF HYPERTENSIVE PATIENTS WITH NORMAL BODY WEIGHT AND WITH ABDOMINAL OBESITY

Objective: The combination of arterial hypertension (AH) with abdominal obesity (AO) significantly increases the severity of hypertension and accelerates the development of hypertension-mediated organ damage, in particular, left ventricular hypertrophy (LVH). MicroRNAs are small non-coding RNA molecules that are involved in the regulation of post-transcriptional gene expression. A number of experimental studies have revealed the antihypertensive, antihypertrophic and antifibrosing properties of microRNA-21-3p. The goal is to study the plasma levels of microRNA-21-3p in hypertensive patients with normal body weight (NBW) and with abdominal obesity (AO). Design and method: 27 patients (16 men) with stage 2-3 hypertension (13 with NBW and 14 with stage II AO) aged from 42 to 60 years were examined. The control group consisted of 12 practically healthy individuals. All patients underwent general clinical laboratory and instrumental examination. Circulating plasma microRNA-133a levels were obtained by polymerase chain reaction using the CFX96 Touch System, “TaqMan microRNA Assay” and “TaqMan® Universal PCR Master Mix” reagent kits. Results: A significant decrease in the levels of micoRNA-21-3p in the blood plasma was established in the whole group of patients with hypertension (with NBW and with AO) (1.43±0.08), p&lt;0.05) in comparison with practically healthy individuals (3.24 ±0.07). At the same time, the levels of this miRNA in the blood plasma of patients with hypertension and AO (1.13±0.06) were significantly lower (p&lt;0.05) than in patients with hypertension and NBW (1.67±0.07). A correlation analysis revealed negative correlations between the levels of micoRNA-21-3p in the blood plasma and the levels of “office” systolic blood pressure (R=-0.44; p=0.04), as well as the left ventricular myocardial mass index (LVMMI) (R= -0.38; p=0.03) in the whole group of patients with AH (with NBW and AO). Conclusions: The results of this study may indicate the presence of a significant deficiency in the production of mircRNA-21-3p in patients with hypertension, especially when it is combined with AO, as well as the involvement of this miRNA in the mechanisms of progression of hypertension and the development of LVH.

High Prevalence and Risk Factors Associated with Vitamin D Deficiency Among Chinese Hospital Staff: A Cross-Sectional Study.

To determine the current status of vitamin D status and the associated factors for its deficiency among Chinese hospital staff. The physical examination data of 2509 hospital staff members was analyzed alongside that of 1507 patients who visited the hospital during the corresponding period of the examination. Serum concentration of 25-hydroxyvitamin D (25(OH)D) were measured in the participants. The hospital staff also completed surveys about general information, laboratory examination, and occupational characteristics. The median vitamin D status (serum 25(OH)D concentration) of the participants was 9.0 ng/mL, ranging from 6.5 to 44.7 ng/mL, and the prevalence of deficiency (<12.3 ng/mL) was 81.47% (2044/2509). The multivariable logistic regression revealed that nurses (OR = 1.54, 95% CI 1.09-2.19, p = 0.015), BMI below 18 (OR = 2.39, 95% CI 1.02-5.58, p = 0.045) associated with higher prevalence of vitamin D deficiency. In the contrast, age above 30 (OR = 0.69, 95% CI 0.53-0.91, p = 0.009) and a high level of uric acid (OR = 0.56, 95% CI 0.41-0.78, p = 0.001) associated with lower prevalence of vitamin D deficiency. The prevalence of vitamin D deficiency was higher among the hospital staff (81.47%) compared to the patients who visited the hospital during the same time period (65.69%). A substantial disparity was observed in the propensity score matching dataset (69.14% vs 79.94%, p < 0.001). Hospital staff are a high-risk group for vitamin D deficiency. Paying attention to vitamin D status and supplementation of this vitamin are pertinent aspects of hospital staff health care. Outdoor activities, vitamin D supplementation, and foods rich in vitamin D should be advocated.

Diastolic/systolic blood pressure ratio for predicting febrile children with sepsis and progress to septic shock in the emergency department

ObjectiveGiven the scarcity of studies analyzing the clinical predictors of pediatric septic cases that would progress to septic shock, this study aimed to determine strong predictors for pediatric emergency department (PED) patients with sepsis at risk for septic shock and mortality.MethodsWe conducted chart reviews of patients with ≥ 2 age-adjusted quick Sequential Organ Failure Assessment score (qSOFA) criteria to recognize patients with an infectious disease in two tertiary PEDs between January 1, 2021, and April 30, 2022. The age range of included patients was 1 month to 18 years. The primary outcome was development of septic shock within 48 h of PED attendance. The secondary outcome was sepsis-related 28-day mortality. Initial important variables in the PED and hemodynamics with the highest and lowest values during the first 24 h of admission were also analyzed.ResultsOverall, 417 patients were admitted because of sepsis and met the eligibility criteria for the study. Forty-nine cases progressed to septic shock within 48 h after admission and 368 were discharged without progression. General demographics, laboratory data, and hemodynamics were analyzed by multivariate analysis. Only the minimum diastolic blood pressure/systolic blood pressure ratio (D/S ratio) during the first 24 h after admission remained as an independent predictor of progression to septic shock and 28-day mortality. The best cutoff values of the D/S ratio for predicting septic shock and 28-day mortality were 0.52 and 0.47, respectively.ConclusionsThe D/S ratio is a practical bedside scoring system in the PED and had good discriminative ability in predicting the progression of septic shock and in-hospital mortality in PED patients. Further validation is essential in other settings.