Risk factors of PTSD, depression and anxiety in patients with previous COVID-19 infection: A systematic review and meta-analysis / The Health Sciences Journal

INTRODUCTION@#Studies showed that those who tested positive for COVID-19 have a 65% risk for a psychiatric disorder, while those undergoing isolation or quarantine are put at risk for anxiety and depression. The objective of this study was to appraise studies that determine the risk factors for psychiatric disorder post-COVID-19 infection.@*METHODS@#All cross-sectional and cohort studies from 2019 onwards that had COVID-19 survivors that developed anxiety, depression and/or post-traumatic stress disorder (PTSD), were included. Medline, Cochrane Library and ClinicalKey were searched using MeSH terms including “COVID-19”, “depression”, “anxiety”, “post-traumatic stress disorder”, and “risk factor”. The risk of bias was assessed using the Newcastle-Ottawa scale. The data extracted from the studies were characteristics of the participants, risk factors, outcome measures and outcomes.@*RESULTS@#Four cohort and four cross-sectional studies involving 1438 COVID-19 survivors who developed depression, anxiety and/or depression were included. The risk factors that were statistically significant were 1) female sex (RR = 1.86; 95% CI 1.06, 2.04; Z = 2.32; p = 0.02) for depression, 2) having family members infected with COVID-19 (RR = 1.56; 95% CI 1.32, 1.85; Z= 5.17; p = <0.01) for depression, 3) steroid administration during hospital admission (RR = 1.62; 95% CI 1.07, 2.47; Z = 2.26; p = 0.02) for anxiety and 4) female sex (RR = 2.13; 95% CI 1.16, 3.91; Z = 2.45, p = 0.01) for PTSD.@*CONCLUSION@#Female sex increases the risk of depression and PTSD. A family history of COVID-19 increases the risk of depression. Steroid administration is a risk factor for anxiety.

Obesity inversely correlates with prostate-specific antigen levels in a population with normal screening results of prostate cancer in northwestern China

Serum prostate-specific antigen (PSA) is a diagnostic biomarker of prostate cancer and is possibly associated with obesity. This study aimed to explore the relationships between obesity indicators [body mass index (BMI) and waist circumference (WC)] with PSA in Chinese men. A cross-sectional study of men aged 30-85 years undergoing prostate cancer screening was conducted from August 2008 to July 2013 in Xi'an, China. Data were obtained from clinical reports, condition was recorded based on self-report including demographics, weight, height, and WC (>90 cm=obese). Fasting blood glucose (FBG) and prostate volume (PV) were assessed clinically. Patients were grouped by BMI (normal=22.9, overweight=23-27.4, obese≥27.5 kg/m2). PSA parameters of density (PSAD), PSA serum level, and PSA increasing rate per year (PSAR) were calculated per BMI and age groups (30-40, 41-59, 60-85 years). Obesity indicators (BMI and WC) and PSA parameter relationships were modeled by age-stratified linear regression. Of 35,632 Chinese men surveyed, 13,084 were analyzed, including 13.44% obese, 57.44% overweight, and 29.12% normal weight, according to BMI; 25.84% were centrally (abdominally) obese according to WC. BMI and WC were negatively associated with all PSA parameters, except PSAD and PSAR [P<0.05, BMI: β=-0.081 (95%CI=-0.055 to -0.036), WC: β=-0.101 (-0.021 to -0.015)], and independent of FBG and PV (P<0.05) in an age-adjusted model. In conclusion, obesity was associated with lower PSA in Chinese men. Therefore, an individual's BMI and WC should be considered when PSA is used to screen for prostate cancer.

Effects of fluoride on proliferation and mineralization in periodontal ligament cells in vitro

Fluoride, which is often added to toothpaste or mouthwash in order to protect teeth from decay, may be a novel therapeutic approach for acceleration of periodontal regeneration. Therefore, we investigated the effects of fluoride on proliferation and mineralization in human periodontal ligament cells in vitro. The periodontal ligament cells were stimulated with various concentrations of NaF added into osteogenic inductive medium. Immunohistochemistry of cell identification, cell proliferation, alkaline phosphatase (ALP) activity assay, Alizarin red S staining and quantitative real-time-polymerase chain reaction (RT-PCR) were performed. Moderate concentrations of NaF (50-500 μmol/L) had pro-proliferation effects, while 500 μmol/L had the best effects. ALP activity and calcium content were significantly enhanced by 10 μmol/L NaF with osteogenic inductive medium. Quantitative RT-PCR data varied in genes as a result of different NaF concentrations and treatment periods. We conclude that moderate concentrations of NaF can stimulate proliferation and mineralization in periodontal ligament cells. These in vitro findings may provide a novel therapeutic approach for acceleration of periodontal regeneration by addition of suitable concentrations of NaF into the medication for periodontitis treatment, i.e., into periodontal packs and tissue patches.

Development of Monoclonal Antibodies That Target 1-Cys Peroxiredoxin and Differentiate <i>Plasmodium falciparum</i> from <i>P. vivax</i> and <i>P. knowlesi</i>

Prompt and accurate diagnosis of malarial patients is a crucial factor in controlling the morbidity and mortality of the disease. Effective treatment decisions require a correct diagnosis among mixed-species malarial patients. Differential diagnosis is particularly important in cases of <i>Plasmodium vivax</i>, a species that shares endemicity with <i>P. falciparum</i> in most endemic areas. Moreover, it is difficult to identify <i>P. knowlesi</i> on the basis of morphology alone, and rapid diagnostic tests are still not available for this malaria species. Therefore, the development of diagnostic tests applicable to the field is urgently needed. 1-Cys peroxiredoxin (1-Cys-Prx) in <i>P. falciparum</i> is abundantly expressed in the mature asexual stages, making it a promising candidate as a diagnostic antigen. In this study, we produced five monoclonal antibodies (mAbs) against <i>P. falciparum</i> 1-Cys-Prx (Pf1-Cys-Prx) by immunizing BALB/c mice with recombinant Pf1-Cys-Prx and subsequent hybridoma production. Cross reactivity of established mAbs with the orthologous molecule of Pf1-Cys-Prx in <i>P. vivax</i> (Pv1-Cys-Prx) and <i>P. knowlesi</i> (Pk1-Cys-Prx) was examined. Western blot analyses showed that three mAbs reacted with Pv1-Cys-Prx and Pk1-Cys-Prx but two mAbs did not. These results indicate that the two mAbs were effective in differentiating <i>P. falciparum</i> from <i>P. vivax</i> and <i>P. knowlesi</i> and could be used in differential diagnosis as well as comparative molecular studies of human <i>Plasmodium</i> species.

Neurofibromatosis tipo 1. Análisis de 109 casos clínicos / Neurofibromatosis type 1. Analysis of 109 cases

La neurofibromatosis tipo 1 (NF1) o enfermedad de von Recklinghausen es una de las enfermedades neurogenéticas más frecuentes; la padece aproximadamente uno en 3500 individuos. Es de herencia autosómica dominante, con penetrancia completa y expresividad clínica variable. Cerca del 50 por ciento de los casos corresponde a mutaciones de novo. Las características clínicas diagnósticas incluyen manchas café con leche, neurofibromas nodulares o plexiformes, esfélides, nódulos de Lisch, glioma óptico y lesiones óseas características. Otros rasgos son dificultad de aprendizaje, deficiencia mental generalmente superficial, aumento del riesgo de tumores malignos, escoliosis e hipertensión arterial. Se analizó la presentación de la NF1 en los pacientes de la Policlínica de Genética (Centro Hospitalario Pereira Rossell), estudiando en forma retrospectiva las historias clínicas. La distribución por sexo fue de 56,9 por ciento -masculino- y de 43,1 por ciento -femenino-, El 70 por ciento de los casos fue de presentación familiar, mientras que el 30 por ciento restante fue de presentación esporádica. La frecuencia de las características clínicas diagnósticas de la población estudiada fue: 100 por ciento de los pacientes presentó manchas café con leche; el 18,3 por ciento presentó esfélides, neurofibromas nodulares el 20,1 por ciento, neurofibromas plexiformes el 3,7 por ciento, nódulos de Lisch el 6,4 por ciento y glioma óptico el 1,8 por ciento. Se muestra la frecuencia de aparición de otras características clínicas, destacándose las alteraciones esqueléticas y la dificultad de aprendizaje que aparecen en el 46,8 por ciento y en el 15,6 por ciento respectivamente. Las máculas hiperpigmentadas están presentes antes del primer año de vida en el 100 por ciento de los pacientes. El promedio de la edad de aparición de los neurofibromas nodulares en los pacientes fue de 11 años. Se establecen las coincidencias y diferencias entre la muestra y resultados internacionales publicados.