Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 31
Filtrar
1.
Organ Transplantation ; (6): 479-496, 2024.
Artículo en Chino | WPRIM (Pacífico Occidental) | ID: wpr-1038417

RESUMEN

In order to further standardize the diagnosis and treatment of long-term systemic complications in kidney transplant recipients, Branch of Organ Transplantation of Chinese Medical Association initiated the formulation of “Clinical Diagnosis and Treatment Guidelines for Long-term Systemic Complications in Kidney Transplant Recipients in China”. Experts on organ transplantation were organized to summarize and integrate the latest progress in this field based on existing clinical guidelines, systematic evaluations, case studies, expert consensus. The guideline was formed after multiple rounds of discussion and reaching a consensus which included complications of hematological system, central nervous system,cardiovascular system, ocular, cutaneous and osteoporosis disorders. The full text focuses on 27 clinical problems and forms 40 recommendations, mainly involving the risk factors, classification, diagnosis, treatment and prevention of various complications. This guideline graded the quality of evidence and the strength of recommendation for each clinical issue using 2009 Oxford Centre for Evidence-Based Medicine (OCEBM) Grading and Strength of Recommendation criteria, so as to provide reference for the diagnosis and treatment of late complications, comprehensively improve the management capacity of clinicians to benefit kidney transplant recipients.

2.
Zhonghua Gan Zang Bing Za Zhi ; 29(6): 533-538, 2021 Jun 20.
Artículo en Chino | MEDLINE | ID: mdl-34225427

RESUMEN

Objective: To preliminary explore the changes in blood system in pyrrolizidine alkaloids (PAs)-related liver damage. Methods: General situation, liver function, biochemical blood test, routine blood test, coagulation function markers, etc., of 77 cases with drug-induced liver damage admitted to the Zhongshan Hospital Affiliated to Fudan University from 2012 to 2019 were retrospectively analyzed. Patients' were divided into PA group, other traditional Chinese medicine group and Western medicine group according to their medication history. Simultaneously, the changes in liver function were observed in the established mice model of monocrotaline-induced liver damage. Liver tissues HE staining and blood routine indexes were observed. Results: 24 cases received PA, 24 cases received other traditional Chinese medicine, and 29 cases received western medicine. Alanine aminotransferase was lower in PA group than the other two groups (P < 0.05), and the total bilirubin and direct bilirubin were significantly lower than the other traditional Chinese medicine group (P < 0.05). The peripheral platelet count of the PA group was (84.11 ± 26.91) ×10(9)/L, which was significantly lower than the lower limit of normal, and had statistically significant difference with other traditional Chinese medicine and western medicine group (P < 0.01). Thrombocytocrit, mean platelet volume and platelet indices of PA group were statistically different from the other two groups (P < 0.05). The D-dimer level in patients with PA group was (2.62 ± 1.93) mg/L, which was higher than the upper limit of normal, and significantly higher than the D-dimer level of the other two groups of patients (P < 0.01). Meanwhile, prothrombin time was longer in PA group than that of the other two groups (P < 0.01), and platelets count were decreased significantly in the mouse model of monocrotaline-induced liver damage after alanine aminotransferase and aspartate aminotransferase elevation (P < 0.01). Conclusion: PA-related liver damage has lower peripheral platelet counts, and the peripheral platelet counts of these patients are lower than other types of drug-induced liver damage. In addition, increased D-dimer in patients with PA-related liver damage indicate a potential risk of thrombosis.


Asunto(s)
Alcaloides de Pirrolicidina , Alanina Transaminasa , Animales , Aspartato Aminotransferasas , Humanos , Hígado , Ratones , Alcaloides de Pirrolicidina/toxicidad , Estudios Retrospectivos
3.
J Inflamm Res ; 14: 2425-2444, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34135615

RESUMEN

BACKGROUND: Prolonged, repeated exposure to cement dust, depending on duration and sensitivity of cement dust-exposed workers, may cause deteriorating effects on the skin, eye, respiratory and hematological system. Toxic cement dust causes inflammatory damage to different body organs. White blood cells (WBCs) are considered cellular markers of ongoing tissue inflammation. AIM OF THE STUDY: Determining the influence of occupational cement dust exposure on WBCs with its differentials (inflammatory markers) in workers from the cement manufacturing plant. METHODOLOGY: Ninety-two seemingly healthy male subjects (46 workers of cement plant and 46 control subjects, who do not contact cement dust, residing in Dhaka) aged between 20 and 50 years participated in this cross-sectional study. This study took place in Dhaka Medical College, Bangladesh, between the years of 2017 and 2018. An automated hematoanalyser was used to assess both the total and differential count of WBC. Data were analyzed with multivariate regression analysis, independent samples t-test, and correlation test. RESULTS: The total WBC count, differential count of lymphocyte, and eosinophil were significantly (p< 0.05) higher in cement dust-exposed recruits than in the control group. Additionally, multivariate regression analysis revealed that duration of cement dust exposure showed a significant association with total WBC count [odds ratio (OR)=4.42,95%, confidence level (CI) 1.56,12.47, p 0.005]. Furthermore, univariate analysis revealed that the control group (not exposed to cement dust) was less likely to have the total WBC count alteration (OR = 0.122, 95% CI =0.047 to 0.311) than the cement dust-exposed group. The total WBC count showed a significant positive correlation with exposure duration to this toxic dust. CONCLUSION: Cement dust exposure causes harmful inflammatory responses, as evidenced by increased total and differential WBC count. The period of contact with this toxic dust has an impact on WBC count.

4.
Ecotoxicol Environ Saf ; 218: 112296, 2021 May 04.
Artículo en Inglés | MEDLINE | ID: mdl-33962271

RESUMEN

Microplastics (MPs) are currently a global environmental pollutants and health hazards that caused by MPs cannot be ignored. However, studies on MP toxicity in mammals are scare. Here, we investigated the effects of two doses (0.1 mg and 0.5 mg) of 5 µm polystyrene microplastic (PS-MP) particles on the hematological system of mice through traditional toxicology experiments and assessed the related potential biological mechanisms using transcriptome sequencing analysis. The toxicological examinations showed that the 0.5 mg dose significantly decreased white blood cell count, increased Pit count, and inhibited the growth of colony-forming unit CFU-G, CFU-M and CFU-GM. Compared with the control group, there were 41 differentially expressed genes (DEGs) in the 0.1 mg-treated group and 32 significantly changed genes in 0.5 mg-treated group. Of note, eight genes were found to be significantly altered in both the PS-MP-treated groups. Gene ontology analysis showed that DEGs were mainly involved in T cell homeostasis, response to osmotic stress, extracellular matrix and structure organization, and metabolic process of NADP and nucleotides. In addition, pathway analysis revealed that the Jak/Stat pathway, pentose and glucuronate interconversions, nicotinate and nicotinamide metabolism, biosynthesis of unsaturated fatty acids, and the pentose phosphate pathway were involved in PS-MP-induced toxicity in mice. These results indicated that PS-MP exposure can cause hematotoxicity to some extent, impact gene expression, and disturb related molecular and biological pathways in mouse bone marrow cells. Our study provides fundamental data on the hematotoxicity of PS-MPs in terrestrial mammals that will help to further assess the corresponding health risks in these mammals.

5.
Drug Des Devel Ther ; 15: 2151-2159, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34045849

RESUMEN

OBJECTIVE: Although temozolomide has been extensively used to treat various tumors, there is a lack of large-cohort studies on temozolomide's toxicity profile. The toxicity profiles and associated factors in patients treated with temozolomide-containing regimens were analyzed. PATIENTS AND METHODS: Patients treated with temozolomide-containing regimens in the Affiliated Union Hospital of Huazhong University of Science and Technology from January 2008 to December 2019 were included. A retrospective analysis of the clinical data of patients treated with temozolomide-containing regimens was performed. Univariate chi-square test and multivariate logistic regression analysis were employed to identify factors associated with the occurrence of toxicities. RESULTS: Among the 1057 patients received temozolomide-containing regimens, 922 patients were included in our analyses. Of the 922 patients, 484 patients (52.5%) experienced toxicities. Univariate analysis revealed that radiotherapy, chemotherapy cycle, chemotherapy regimen, and clinical stage were significantly associated with the toxicity during temozolomide treatment (P < 0.05). The chemotherapy regimen, chemotherapy cycle, and clinical stage were significantly associated with the overall occurrence of toxicities (P < 0.05). A chemotherapy regimen, chemotherapy cycle, and clinical stage were associated with the hematological system's toxicities, whereas gender, age, clinical diagnosis, and clinical stage were related to gastrointestinal toxicities (P < 0.05). Clinical diagnosis, chemotherapy regimen, and age were associated with liver toxicity (P < 0.05). CONCLUSION: Toxicities are common among patients receiving temozolomide-containing regimens. Clinicians should be aware of factors associated with toxicities to minimize the impact of the toxicity.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Neoplasias/tratamiento farmacológico , Temozolomida/efectos adversos , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Niño , Preescolar , Relación Dosis-Respuesta a Droga , Femenino , Hospitales , Humanos , Lactante , Masculino , Persona de Mediana Edad , Neoplasias/diagnóstico , Estudios Retrospectivos , Temozolomida/administración & dosificación , Adulto Joven
6.
Heliyon ; 6(12): e05669, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-33336096

RESUMEN

Marek's disease (MD) is an alphaherpesvirus (Marek's disease virus, MDV)-induced pathology of chickens associated with paralysis, immunosuppression, neurological signs, and T-cell lymphomas. MD is controlled in poultry production via live attenuated vaccines. The purpose of the current study was to compare methods for precipitating exosomes from vaccinated and protected chicken sera (VEX) and tumor-bearing chicken sera (TEX) for biomarker analysis of vaccine-induced protection and MD lymphomas respectively. A standard polyethylene glycol (PEG, 8%) method was compared to a commercial reagent (total exosome isolation reagent, TEI) for exosome yield and RNA content. Although exosomes purified by PEG or TEI were comparable in size and morphology, TEI-reagent yielded 3-4-fold greater concentration. Relative expression of 8 out of 10 G. gallus- and MDV1-encoded miRNAs examined displayed significant difference depending upon the precipitation method used. Standard PEG yields comparable, albeit lower amounts of exosomes than the TEI-reagent and a distinctive miRNA composition.

7.
Heliyon ; 6(11): e05470, 2020 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-33225095

RESUMEN

Piper capense Linn is a plant used in Cameroon to treat cancer and several other diseases such as urinary tract disorder, fever, stomach-ache and to improve appetite. The methanol extract of Piper capense has been reported for its antiproliferative activity towards several human cancer cell lines. The aim of this work was to evaluate the acute and subchronic oral toxicities of a methanol extract from P. capense fruits on rats. The acute oral toxicity assay was carried out by administration of a single dose of 5000 mg/kg body weight of methanol extract of the Piper capense to five female rats, after which the behavior of the animals and the number of deaths were noted after 48 h. The animals were then kept for observation for 14 days. On the 15th day, the rats were sacrificed and macroscopic observation of the organs was made. Concerning the subchronic toxicity study, the rats composed of males and females received three doses (250, 500 and 1000 mg/kg body weight/day) for a period of 28 days by oral gavage. General animal behavior, food intake, weight gain, organ weights, haematological parameters, serum, and urinary biochemical parameters, and histological sections of liver and kidneys, were evaluated. Methanol extract from the Piper capense fruits did not cause any death in rats that were administered a single dose of 5000 mg/kg body weight of extract and therefore, the letal dose 50 (LD50) of the extract is greater than 5000 mg/kg body weight. Subchronic administration of the methanol extract of Piper capense fruits showed significant variations (P > 0.05) after analysis of certain biochemical parameters: serum urea, urinary urea, alanine aminotransferase (ALAT), aspartate aminotransferase, (ASAT), serum protein; in both male and female rats that received the dose of 1000 mg/kg body weight/day. No major signs of toxicity were observed in the liver and kidneys of animals after analysis of the histological sections performed. Beside, some signs of toxicity were observed, including cell lysis and inflammation on the liver and kidney organs at a dose of 1000 mg/kg body weight/day. Finally, the methanol extract of Piper capense fruits is safe at lower doses, but could cause some damages at doses as high as 1000 mg/kg body weight/day. Consequently, it should be taken with caution when used in therapy.

8.
Heliyon ; 6(11): e05389, 2020 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-33195841

RESUMEN

Doping tests for the illegal use of erythropoiesis-stimulating agents (ESAs) have been developed. We developed a new Western blotting method to detect and distinguish endogenous erythropoietin (Epo, 35-38 kDa) and exogenous ESAs (epoetin α and ß, 38-42 kDa; darbepoetin α, 47-50 kDa; epoetin ß pegol, 93-110 kDa). Epo and ESAs are glycoproteins and deglycosylation using peptide-N-glycosidase F shifted all Epo and ESA bands except epoetin ß pegol to 22 kDa. We cut the bands of Epo and ESAs from SDS-PAGE gels and analyzed them by Liquid Chromatography/Mass Spectrometry (LC/MS). LC/MS detected all endogenous Epo and exogenous ESAs as deglycosylated 22 kDa Epo, indicating that LC/MS analysis could confirm the presence of Epo or ESA, but could not distinguish between endogenous Epo and exogenous ESAs. We propose the following Epo doping tests: 1) detect Epo or ESAs by Western blotting of the glycosylated form; 2) increase the reliability by the band shift following deglycosylation; and 3) complete confirmation of Epo or ESA by LC/MS analysis using cut gels. One of the advantages of our method is that pre-purification of samples for Epo is not required in our Western blotting.

9.
Heliyon ; 6(11): e05191, 2020 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-33163670

RESUMEN

Glucosylceramidase (GCase) is a lysosomal enzyme that catalyzes the cleavage of ß-glucosidic linkage of glucocerebroside (GC) into glucose and ceramide; thereby, plays an essential function in the degradation of complex lipids and the turnover of cellular membranes. The growing list of 460 mutations in the gene coding for it-glucosylceramidase beta acid 1 (GBA1)-is reported to abolish its catalytic activity and decrease its enzyme stability, associating it with severe health conditions such as Gaucher disease (GD), Parkinson Disease (PD) and Dementia with Lewy bodies (DLB). Although the three-dimensional structure of wild type glucosylceramidase is elucidated, little is known about its features in human cells. Moreover, alternative sources of GCase that prove to be effective in the treatment of diseases with enzyme treatment therapies, impose the need for a simple and cost-effective procedure to study the enzyme behavior. This work, for the first time, shows a well-established, yet simple, cost- and time-efficient protocol for the study of GCase enzyme in human leukocytes by the artificial substrate p-Nitrophenyl-ß-D-glucopyranoside (PNPG). Characterization of the enzyme in human leukocytes for activation parameters (optimal pH, Km, and Vmax) and enzyme inhibition was done. The results indicate that the optimum pH of GCase enzyme with PNPG is 5.0. The Km and Vmax values are 12.6mM and 333 U/mg, respectively. Gluconolactone competitively inhibits GCase, with a Ki value of 0.023 mM and IC50 of 0.047 mM. Glucose inhibition is uncompetitive with a Ki of 1.94 mM and IC50 of 55.3 mM. This is the first report for the inhibitory effect of glucose, δ-gluconolactone on human leukocyte GCase activity.

10.
BMC Infect Dis ; 20(1): 886, 2020 Nov 25.
Artículo en Inglés | MEDLINE | ID: mdl-33238935

RESUMEN

BACKGROUND: To investigate the clinical characteristics of Epstein-Barr virus (EBV) infection in the pediatric nervous system (NS). METHODS: We retrospectively analyzed the clinical data and follow-up results of 89 children with neurological damage caused by EBV who were hospitalized in the children's hospital of Chongqing Medical University from January 2008 to April 2019. RESULTS: EBV infection of the NS can occur at any time of the year. The highest incidence was seen in the age group of 0-4 years. Fever is the main clinical feature (74/89, 83.1%). The main clinical types were encephalitis/meningoencephalitis (64/89, 71.9%), acute myelitis (2/89, 2.2%), acute disseminated encephalomyelitis (ADEM) (3/89, 3.4%), Guillain-Barré Syndrome (GBS) (15/89, 16.9%), neurological damage caused by EBV-hemophagocytic lymphohistiocytosis (EBV-HLH) (4/89, 4.5%), and NS-post-transplant lymphoproliferative disorder (NS-PTLD) (1/89, 1.1%). Anti-N-methyl-D-aspartate receptor encephalitis was found during the convalescence of EBV encephalitis. EBV encephalitis/meningitis showed no symptoms of tonsillitis, lymph node enlargement, skin rash, hepatosplenomegaly. Acute motor axonal neuropathy is the chief complication in GBS caused by EBV. CONCLUSION: There were significant differences in neurological complications caused by EBV. The prognosis of EBV infection in the NS is generally good. These illnesses are often self-limiting. A few cases may show residual sequelae.


Asunto(s)
Encefalitis Viral/virología , Encefalomielitis Aguda Diseminada/virología , Infecciones por Virus de Epstein-Barr/complicaciones , Síndrome de Guillain-Barré/virología , Herpesvirus Humano 4/inmunología , Linfohistiocitosis Hemofagocítica/virología , Trastornos Linfoproliferativos/virología , Meningoencefalitis/virología , Mielitis/virología , Adolescente , Niño , Preescolar , Infecciones por Virus de Epstein-Barr/líquido cefalorraquídeo , Infecciones por Virus de Epstein-Barr/fisiopatología , Infecciones por Virus de Epstein-Barr/virología , Femenino , Fiebre , Estudios de Seguimiento , Humanos , Incidencia , Lactante , Masculino , Pronóstico , Estudios Retrospectivos
11.
Heliyon ; 6(8): e04677, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32904199

RESUMEN

The mechanisms of the hypercoagulable state in cirrhotics with and without hepatocellular carcinoma are incompetently comprehended. Objective: We aimed to explore the plasma Annexin A5/PS + MP ratio in these patients. Higher levels of Annexin A5 and PhosphatidylSerine bearing microparticles have been observed in cases of inflammation and increased coagulation but there are no studies which explore if there is an association between them and PVT in cirrhotics with and without HCC. So, our goal is to estimate their role in predicting PVT within HCV cirrhotics with and without HCC. 91 HCV cirrhotics with and without HCC and 20 healthy people (controls) were enlisted. Cirrhotics with and without HCC who developed PVT displayed higher levels of PS + MPs and lower Annexin A5/PS + MPs ratio (38.73 ± 1.92) and (0.00238 ± 0.00047) than cirrhotics who didn't develop PVT (22.19 ± 10.58) and (0.00451 ± 0.0023) (P < 0.001). Among the tested factors, lower Annexin A5/PS + MPs ratio show higher performance in predicting PVT in total cirrhotics, AUC, 0.919 followed by PS + MPs level, 0.876, Portal flow velocity, 0.842, Plasma Annexin A5 level, 0.509. In our hypothesis, As phosphatidylserine exposure increase due to increased level of circulating microparticles in cirrhotics with and without HCC, anenxin-A5 may be secreted by platelets and endothelial cells into the circulation as a physiological response to inactivate the elevated levels of PS bearing MPs produced in these patients but the increase in anenxin-A5 level isn't equivalent to the increase in PS bearing MPs levels. The equilibrium between plasma annexin A5 and PS bearing MPs levels is defected.

12.
Heliyon ; 6(8): e04661, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32904265

RESUMEN

BACKGROUND: Serum antibody markers have been increasingly identified not only for cancer and autoimmune diseases but also for atherosclerosis-related diseases such as acute ischemic stroke (AIS), acute myocardial infarction (AMI), diabetes mellitus (DM), and chronic kidney disease (CKD). Biomarkers for transient ischemic attack (TIA) and non-ST segment elevation acute coronary syndrome (NSTEACS) are potentially useful for detection of early phase of atherosclerotic changes against AIS and AMI, respectively. METHODS: We utilized serological identification of antigens by recombinant cDNA expression cloning (SEREX) using a human aortic endothelial cell cDNA phage library and sera from patients with TIA or NSTEACS. Serum antibody levels were measured by amplified luminescent proximity homogeneous assay-linked immunosorbent assay (AlphaLISA) using purified recombinant antigens. RESULTS: Screening of sera from patients with TIA identified DnaJ heat shock protein family (Hsp40) member C2 (DNAJC2) as a candidate antigen, which was also isolated by SEREX screening using sera of patients with NSTEACS. The validation cohort revealed significantly higher DNAJC2 antibody (DNAJC2-Ab) levels in the sera of patients with TIA or AIS than those in healthy donors (HDs). Multivariate logistic regression analysis indicated that the predictive odds ratios (OR) of DNAJC2-Ab levels for TIA and AIS were 2.54 (95% confidence interval [CI]: 1.36-4.74, p = 0.0034) and 2.14 (95% CI: 1.39-3.30, p = 0.0005), respectively. Serum DNAJC2-Ab levels were also higher in patients with AMI, DM, and CKD than those in HDs. CONCLUSION: Serum DNAJC2-Ab level may be useful for early detection of atherosclerotic lesions, which lead to AIS and AMI.

13.
Heliyon ; 6(9): e04695, 2020 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-32939410

RESUMEN

BACKGROUND AND AIMS: Heart failure is one of the leading causes of morbidity and mortality in the United States. The advent of left ventricular assist devices (LVAD) has improved the survival and quality of life in patients with end stage heart failure. Gastrointestinal bleeding (GIb) remains one of the limitations of LVADs. METHODS: A single center, retrospective review of records was performed for patients who underwent LVAD implantation between 2010 and 2015. All patients who survived more than 30 days were followed till March 2016 and are described below. RESULTS: A total of 79 patients were included in the study. The rate of GIb was 34.1% (27 patients) with a mean time to bleed of 267 days. Older patients were more likely to bleed. Upper GI bleeding was the source of bleeding in 54% patients. Arteriovenous malformations (AVM) were the source of bleeding in 74% bleeders and 80% of these patients had de novo AVM formation. 14/27 (51%) patients had a re-bleeding event. Thrombotic events were 4.5 times more likely to occur in patients who also had a GI bleed. CONCLUSIONS: GI bleeding in LVAD patients is common with the source of bleeding more commonly being in the upper GI tract. GI bleeding may occur as early as 10 days post procedure, despite previous negative screening endoscopies. There is an increased risk of thrombotic events in patients who have experienced a GI bleed.

14.
Heliyon ; 6(9): e04857, 2020 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-32984589

RESUMEN

INTRODUCTION: Data on medium- and long-term prognostic factors for death in elderly patients with acute Pulmonary Embolism (APE) are lacking. The present study aimed to assess sPESI score and the Charlson Comorbidity Index (CCI) as medium- and long-term predictors of mortality in elderly patients with haemodinamically stable APE. METHODS: All consecutive patients aged≥65 years old, evaluated at the emergency department (ED) of our hospital from 2010 through 2014, with a final diagnosis of APE, were included in this retrospective cohort study. RESULTS: Study population:162 patients, female:36.5%, median age:79 years old, 74% presented a sPESI score>0, and 61% a CCI≥ 1. All causes mortality: 19.8%, 23.5%, 26.5%, 32.1% and 48.2% at 3, 6 months, 1, 2 and 5 years after APE. Univariate regression analysis: CCI≥1 was associated with a higher mortality at 3, 6 months, 1, 2 and 5 years. Multivariate Cox analysis: CCI≥1 associated with increased mortality at 3 months (HR:4.29; IC95%:1.46-12.59), 6 months (HR:5.33; IC95%:1.84-15.44), 1 year (HR:4.87; IC95%:1.87-12.70), 2 years (HR:3.78; IC95%:1.74-8.25), and 5 years (HR:2.30; IC95%:1.33-3.99). sPESI score≥1 was not found to be related to an increased medium-or long-term mortality. Negative predictive values (IC95%) of CCI≥1 were 93.65% (87.61-99.69), 93.65% (87.61-99.69), 92.06% (85.37-98.76), 87.3% (79.05-95.55) and 71.61% (60.13-83.1) for mortality at 3, 6 months, 1, 2 and 5 years. CONCLUSION: In elderly patients with a confirmed normotensive APE, unlike sPESI score, CCI showed to be an independent prognostic factor for medium- and long-term mortality. In these patients, after the acute phase following a PE event, the assessment of the comorbidities burden represents the most appropriate approach for predicting medium- and long-term mortality.

15.
Heliyon ; 6(8): e04622, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32793833

RESUMEN

The impact of carbon monoxide (CO) gas on the human organism is very dangerous. The affinity of CO to hemoglobin is considerably higher than that of oxygen. Thus, the interaction of CO with the blood results in a higher content of carboxyhemoglobin (HbCO) in red blood cells (RBCs) and correspondingly in tissue hypoxia. The disruption in the organism depends on the HbCO content in the blood. To assess any complications in the body at a given moment due to CO exposure and predict future consequences, it is necessary to measure the dynamics of hemoglobin derivative concentrations simultaneously. However, measuring HbCO and other derivatives in RBCs without hemolysis accurately is complicated due to the strong intercollinearity between the molar absorptivities of hemoglobin derivatives and superposition of absorption and scattering spectra. In the present study, to quantitatively assess the contents of the hemoglobin derivatives in the blood after exposure to CO, improved accuracy is achieved by optimizing the wavelength range used for the nonlinear curve fitting of optical spectra. Experimental spectra were measured in the wavelength range Δ λ = 500 - 700 nm . For each experimental curve, it was established the value of optimal interval Δ λ o p t for which the correlation coefficient between experimental data and corresponding points of the theoretical fitting curve was the maximum in the wavelength range Δ λ t y p = 535 - 580 n m , which contains the typical absorption peaks for H b O 2 , H b , and H b C O . The concentrations obtained based on such fitting curves were considered to be highly accurate. The quantitative assessment enabled the determination of the H b C O nonlinear increase with the time of CO exposure in the in vitro experiment and the study of the dynamics of hemoglobin derivative transformations during blood incubation.

16.
Heliyon ; 6(7): e04320, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32671251

RESUMEN

Dengue viral (DENV) infection has a broad clinical spectrum ranging from classical febrile illness to life-threatening disease. Literature suggests that spectrum of illness could be due to differences in innate immune-responses; however, the knowledge is still at infancy. Amongst the various cells involved in innate immune responses, NK cells play a central role, particularly in anti-viral immunity. Thus in this study we have evaluated the role of NK-cells during acute-DENV infection and its influence on severity of disease, by analyzing activation, cytotoxic receptors, cytolytic granule contents and degranulation markers on NK-cells during different stages of infection. Based on the clinical manifestations and severity of the disease, DENV patients were classified into patients with dengue without warning signs (DF), dengue with warning signs (DFWS) and severe dengue (SD) patients. During acute-DENV infection, though there was no alteration in frequency of NK-cells, significant increase in frequency of CD56bright subset in DF patients (p < 0.05) was observed, while it remained unaltered in SD patients. We also found that, CD56dim NK-cell subset of DF patients had elevated CD69 expression, granzyme B and intracellular IFN-γ levels compared to SD patients (p < 0.05). Amongst the NK-cell cytotoxicity receptor (NCR), NKp30 receptor was significantly elevated in DF patients (p < 0.05), however in SD patients it was comparable to healthy controls. This receptor is essential for dendritic cells-NK-cells crosstalk for initiating adaptive immune response. IL-15 is known to induce NKp30 expression, which was also seen to be elevated in DF patients (p < 0.05) but unaltered in SD patients. In SD patients, even post-6 days of infection i.e. during recovery phase, CD69 and NKp30 expression did not raise, suggesting impaired NK-cell response in these patients. To summarize, our study reports, that efficient NK cell response during acute phase of DENV infection is crucial for preventing severity of the disease. This study helps in understanding the dynamics of NK cell response in immunopathogenesis of DENV infection; which is crucial for development of efficacious therapeutics as well as vaccine.

17.
Heliyon ; 6(6): e04193, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32577568

RESUMEN

Kikuchi-Fujimoto disease (KFD) is thought to be a self-limited disease featuring fever and cervical lymphadenopathy; most cases having a favorable outcome. Severe disease and death are occasionally reported. Here we report a case of KFD complicated by hemophagocytosis and aseptic meningitis. The symptoms and laboratory parameters improved after systemic glucocorticoids, intravenous immunoglobulin and one dose of intrathecal dexamethasone. Clinicians should aware of this disease and make early diagnosis by lymph node biopsy to avoid over-treatment.

18.
Heliyon ; 6(6): e04118, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32566779

RESUMEN

BACKGROUND: HIV remains a generalised epidemic in Cameroon, with regular sentinel surveillance surveys (SSS) conducted among pregnant women to monitor the epidemiological dynamics, and for strategic policy making. Our main objective was to actualise data on HIV epidemiology, and compare the trends overtime among pregnant women versus data from the general population in Cameroon. METHODS: Sentinel surveillance was conducted in 2016 among pregnant women in the 10 regions (60 sites) of Cameroon, targeting 7,000 first antenatal care (ANC-1) attendees (4,000 in urban; 3,000 in rural). HIV testing was done following the serial national algorithm at the National Public Health Laboratory. Results of 2016 were compared with 2009 and 2012 dataset, alongside reports from the general population; with p < 0.05 considered statistical significant. FINDINGS: A total of 6,859 ANC-1 (97.99% sampling) were enrolled in 2016, with 99.19% (6,513/6,566) acceptability for HIV testing; similar to performances in 2009 and 2012 (>99%). National prevalence of HIV was 5.70% (389/6,819), similar between urban (5.58%) and rural (5.87%) settings. HIV prevalence among pregnant women declined significantly from 2009 (7.6%), 2012 (7.8%) to 2016 (5.7%), p < 0.0001; with a similar declining trend in the general population: from 2004 (5.5%), 2011 (4.3%) to 2017 (3.4%), p < 0.0001. Difference between SSS and the population-based survey was non-significant (r = 0.6; p = 0.285). Following geographical settings, HIV prevalence was higher in urban vs. rural settings from 2009-2012 (p < 0.0001), followed by similar rates in 2016. Early-age infection (15-24 years) decreased from 6.7% in 2009 to 3.4% in 2016, with remarkable declines in new infections within the age ranges 15-19 years (5.1%-1.57%) and 20-24 years (7.8%-4.39%). INTERPRETATION: With high acceptability in HIV testing, the prevalence of HIV-infection through SSS indicates a declining but generalised epidemic among pregnant women in Cameroon. Of note, as the declining prevalence among pregnant women also reflects an epidemic reduction in the general population, SSS represents an efficient strategy to understand the dynamics of HIV epidemics in the general Cameroonian population, pending validation by periodic population surveys.

19.
Heliyon ; 6(6): e04017, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32529061

RESUMEN

BACKGROUND: Anaemia, especially iron deficiency anemia, is an important cause of morbidity and mortality in African women and children. AIM: To assess the intake of nutrients related to iron and anaemia status among mothers in smallholder agrarian communities in Northern Ghana where anaemia is known to be endemic. SETTING: Tolon Kumbumgu district and Tamale Metropolis in Ghana. METHODS: A cross-sectional study was conducted among 161 mothers with children 6-59 months. Questionnaires on socio-demographics, household food security and production and food frequencies, and three 24-hour recalls were administered during structured interviews, and BMI was assessed. Dietary intakes were analysed with the Ghana Nutrient Database® (version 6.02). Nutrient intake was evaluated using the estimated average requirements and iron intakes using the probability method. RESULTS: Most mothers (91.9%) had low literacy and were subsistence farmers. The staple diet was homemade unrefined, unfortified maize meal, homemade unfortified oil (shea butter), and seasonal green leafy vegetables (mostly amaranth), butternut, tomatoes, onions and legumes. Inadequate intakes of vitamin A (in 9.9%), folate (in 46.6%) and vitamin B12 (in 98.8%) were observed, in combination with high fibre (47.8 ± 19.0 g/day) intakes and high tea consumption. If 10% iron bio-availability was assumed, 33.1% were estimated to have inadequate iron intake; if 5% iron bio-availability was assumed, 80.8% were estimated to have inadequate iron intakes. CONCLUSION: In these low socio-economic agrarian communities, mothers of infants are living on home produce and rarely consumed foods (fortified salt, cooking oil and wheat flour) from the national food fortification programmes intended to address anaemia and other micronutrient deficiencies.

20.
Heliyon ; 6(3): e03616, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32258471

RESUMEN

Malaria is a major health problem in the world particularly in sub-Saharan Africa where 90% of malaria deaths occur. Likewise malaria is one of the leading causes of morbidity and mortality in Ethiopia. It has been reported that about 75% of the country is malarious where 60% of its population is at risk of this infection. Like many African countries, Ethiopian urban settings are characterized by poor housing, lack of sanitation and drainage of surface water which provide conducive environment for the breeding of vector mosquitoes for the transmission of malaria. There are few researches on urban malaria under the urban settings of Ethiopia. The purpose of this study was to assess the magnitude of malaria cases due to Plasmodium falciparum and Plasmodium vivax in Batu town, Oromia, Ethiopia. Retrospective laboratory confirmed malaria case record data of six years (2012-2017) were used to analyze the magnitude of malaria cases due to P. falciparum and P. vivax, in Batu town, Oromia, Ethiopia. The retrospective data analysis revealed an overall 21,797 malaria confirmed cases; of which 49.5% were due to P. falciparum and 50.5% were due to P. vivax, with a slight decline in malaria between 2012 and 2017. Malaria cases were recorded in both sexes and all age groups in the study area. From the result of the present analysis it can be concluded that both P. falciparum and P. vivax were the cause for malaria cases indicating malaria is still public health problem in Batu town. Therefore, appropriate strategic control measures must be designed to protect the public and eventually eliminate malaria from the area and the country as a whole.

SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA