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1.
Molecules ; 27(4)2022 Feb 09.
Artículo en Inglés | MEDLINE | ID: mdl-35208949

RESUMEN

Nanotechnology has become a dire need of the current era and the green synthesis of nanoparticles offers several advantages over other methods. Nanobiotechnology is an emerging field that contributes to many domains of human life, such as the formulation of nanoscale drug systems or nanomedicine for the diagnosis and treatment of diseases. Medicinal plants are the main sources of lead compounds, drug candidates and drugs. This work reports the green synthesis of Ag nanoparticles (AgNPs) using the aqueous bark extract of Zanthozylum armatum, which was confirmed by a UV absorption at 457 nm. XRD analysis revealed an average size of 18.27 nm and SEM showed the particles' spherical shape, with few irregularly shaped particles due to the aggregation of the AgNPs. FT-IR revealed the critical functional groups of phytochemicals which acted as reducing and stabilizing agents. The bark extract showed rich flavonoids (333 mg RE/g) and phenolic contents (82 mg GAE/g), which were plausibly responsible for its high antioxidant potency (IC50 = 14.61 µg/mL). Extract-loaded AgNPs exhibited the highest but equal inhibition against E. coli and P. aeruginosa (Z.I. 11.0 mm), whereas methanolic bark extract inhibited to a lesser extent, but equally to both pathogens (Z.I. 6.0 mm). The aqueous bark extract inhibited P. aeruginosa (Z.I. 9.0 mm) and (Z.I. 6.0 mm) E. coli. These findings-especially the biosynthesis of spherical AgNPs of 18.27 nm-provide promise for further investigation and for the development of commercializable biomedical products.


Asunto(s)
Antibacterianos , Escherichia coli/crecimiento & desarrollo , Nanopartículas del Metal/química , Extractos Vegetales/química , Pseudomonas aeruginosa/crecimiento & desarrollo , Plata , Zanthoxylum/química , Antibacterianos/síntesis química , Antibacterianos/química , Antibacterianos/farmacología , Plata/química , Plata/farmacología , Espectroscopía Infrarroja por Transformada de Fourier
2.
Medicina (Kaunas) ; 58(11)2022 Nov 11.
Artículo en Inglés | MEDLINE | ID: mdl-36422170

RESUMEN

Background and Objectives: Following an injury, upper-body strength and proprioception training is typically suggested. To our understanding, no prior research has looked into the impact of balance training on upper-body strength and stability. So, this study investigated the effects of Biodex balance training on enhancing the dynamic stability, strength, and function of the upper quarter (UQ) in recreational weightlifters. Materials and Methods: Fifty male weightlifters were randomly assigned into two groups. The experimental group received an upper-extremity Biodex balance training program three times/week for eight weeks, while the control group underwent a regular weightlifting training routine. Pre- and post-test scores of the upper-quarter dynamic stability, strength, and function were measured for both groups using the shoulder active repositioning accuracy test, two-minute push-up test, and the upper-quarter Y-balance test (UQ-YBT) and one-arm hop test, respectively. Results: Post-test values were significantly greater for the normalized UQ-YBT test than pre-test values in both groups (p < 0.05). Post-test values of the experimental group were significantly greater than the control group (p < 0.05). Regarding the shoulder active repositioning accuracy test and the time of the one-arm hop test, post-test values were significantly lower than pre-test values for both groups (p < 0.05), and post-test values of the experimental group were significantly lower than those of the control group (p < 0.05). The post-test value of the two-minute push-up test of each group was significantly higher than the pre-test value (p < 0.05), without any significant difference between both groups (p > 0.05). Conclusions: Adding upper-body Biodex balance training to a regular weightlifting training routine was effective in enhancing the upper quarter's dynamic stability and function.


Asunto(s)
Extremidad Superior , Levantamiento de Peso , Humanos , Masculino , Hombro
3.
Environ Res ; 202: 111699, 2021 11.
Artículo en Inglés | MEDLINE | ID: mdl-34273371

RESUMEN

Leptospirosis is a severe bacterial infectious disease caused by the organisms belonging to the genus of Leptospira. The chitosan/Bacopa saponin/tripolyphosphate (CS/BS/TPP) nanoparticles conjugated with recombinant DNA vaccines were designed against Leptospirosis. Chitosan, a polysaccharide is suitable for delivery of drug, and gene due to its bio-compatible and biodegradable properties. Bacopa saponins are used for the induction of the immune response against microbial infections. The recombinant DNA vaccine construct was composed of the leptospiral outer membrane LipL32 gene tagged with EGFP and hGMCSF adjuvant in the pVAX1 mammalian expression vector along with the Cytomegalovirus (CMV) promoter. These recombinant DNA vaccine constructs was termed as pVAX1-EGFP-LipL32 and pVAX1-EGFP-hGMCSF-LipL32, and these constructs were conjugated with CS/BS/TPP nanoparticles by using the ionic gelation technique. Thus, CS/BS/TPP conjugated nanoparticle DNA vaccine was confirmed by functionality (FT-IR), crystalline nature (XRD) and surface charge (Zeta potential). The 90% encapsulation efficiency was observed in the conjugated nanoparticle DNA vaccine. In contrast, cell viability analysis validated that the synthesized DNA conjugated CS/BS/TPP nanoparticles showed low cytotoxicity up to 10 mg/mL. The results showed here are the initial establishment of DNA vaccine conjugated nanoparticles, which can be used as a potential anti-leptospiral vaccine.


Asunto(s)
Bacopa , Quitosano , Leptospirosis , Nanopartículas , Saponinas , Animales , Técnicas de Transferencia de Gen , Espectroscopía Infrarroja por Transformada de Fourier
4.
Korean J Parasitol ; 58(2): 129-134, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-32418381

RESUMEN

In most developing countries, Dientamoeba fragilis infection is an obscure protozoan infection. We aimed to determine a frequency and clinical importance of D. fragilis infection in Taif, Saudi Arabia. A 1-year case control study included patients with gastrointestinal (cases, n=114) or non-gastrointestinal symptoms (controls, n=90). The fecal samples were examined with the classical parasitological methods for intestinal protozoa, and by real time PCR for D. fragilis. The infection by D. fragilis was detected in 5.8% by PCR and in 4.4% patients by microscopy. The infection was identified more in control group (n=9) than in cases (n=3); a sole infection in 11 patients and mixed with Giardia in 1 patient. The other enteric parasites detected were Blastocystis sp. (8.3%), Giardia sp. (5.3%), Cryptosporidium sp. (2.9%), Entamoeba histolytica (1.4%), Entamoeba coli (0.9%) and Hymenolepis nana (0.4%). Our results tend to reinforce the need to increase awareness of D. fragilis infection in Saudi Arabia.


Asunto(s)
Enfermedades Asintomáticas , Dientamebiasis/epidemiología , Enfermedades del Sistema Digestivo , Estudios de Casos y Controles , Dientamoeba/aislamiento & purificación , Dientamebiasis/parasitología , Humanos , Reacción en Cadena de la Polimerasa , Arabia Saudita/epidemiología
5.
Microbiol Immunol ; 63(6): 199-205, 2019 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-31045263

RESUMEN

Success in eradication of Helicobacter pylori is declining globally because H. pylori has developed resistance against most of the antibiotics proposed for eradication regimens, mainly through point mutations. The present study included 200 patients with dyspepsia attending Taif Hospital. Gastric biopsies were obtained during gastroscopy and subjected to rapid urease testing. Molecular methods were used to confirm diagnoses of H. pylori infection and to identify resistance gene variants of four antibiotics; namely, clarithromycin, metronidazole, fluoroquinolones and tetracycline (23S rRNA, gyrA, rdxA and 16S rRNA respectively). Of all investigated patients, Molecular diagnoses were made in 143 of all investigated patients; thus, the prevalence was .5%. The overall rate of resistance to clarithromycin among the H. pylori-positive patients was high (39.9%) and the rate of resistance significantly greater (48.2%) among the secondary resistance group, secondary resistance being defined as resistance as a result of previous exposure to the relevant antibiotic. The rate of resistance to fluoroquinolones was considered moderate; the difference in rate of resistance between the primary and secondary resistance groups (8.4% and 9.5%, respectively) was not significant Also, there was a low prevalence of both primary and the secondary tetracycline resistance in the study cohort. In contrast, the prevalence of metronidazole resistance was considered high with no significant difference between the two resistance groups. H. pylori showed an increased prevalence of resistance to all four of the commonly used therapeutic agents. Thus, eradication therapy should be based on the regional results of susceptibility testing. Moreover, treatment tailored according to individually determined H. pylori susceptibility may be a reasonable future goal.


Asunto(s)
Farmacorresistencia Bacteriana Múltiple/genética , Infecciones por Helicobacter/diagnóstico , Helicobacter pylori/genética , Helicobacter pylori/aislamiento & purificación , Patología Molecular , Adulto , Anciano , Antibacterianos/farmacología , Proteínas Bacterianas/genética , Claritromicina/farmacología , Estudios de Cohortes , Girasa de ADN/genética , Farmacorresistencia Bacteriana Múltiple/efectos de los fármacos , Femenino , Fluoroquinolonas/farmacología , Infecciones por Helicobacter/epidemiología , Helicobacter pylori/efectos de los fármacos , Helicobacter pylori/patogenicidad , Humanos , Masculino , Metronidazol/farmacología , Pruebas de Sensibilidad Microbiana , Persona de Mediana Edad , Epidemiología Molecular , Nitrorreductasas/genética , Prevalencia , ARN Ribosómico 16S/genética , ARN Ribosómico 23S/genética , Arabia Saudita/epidemiología , Tetraciclina/farmacología , Adulto Joven
6.
Am J Transl Res ; 16(5): 2049-2058, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38883386

RESUMEN

OBJECTIVE: Hepatitis E virus (HEV) is the most common cause of acute viral hepatitis in the world. Hepatitis E infection is commonly widespread by the fecal oral routes and contaminated water. This study was designed to explore the prevalence and risk factors of hepatitis E infection in pregnant women of the Multan district, Pakistan. METHODS: The study comprised of a total of 500 enrolled patients, among which, 105 pregnant females with hepatitis E infection fulfilled the criteria for anti-HEV antibodies. Pregnant women without significant complications and without hepatitis E infection were excluded from this study. Hepatic profile, complete blood count, coagulation markers, and standard protocol were also assessed for fetal maternal hemorrhage. RESULTS: Our results showed that 105 patients (66.66%, CI 95%) had HEV infection with mean age 25±5 years. Serum bilirubin levels were increased in 74 patients (70.47%), aspartate transaminase was elevated > 200 IU/L in 71 patients (67.61%), alanine transaminase was above the 100 IU/L in 65 patients (245 IU/L), and low platelet counts were found in 45 patients (42.85%). Moreover, fetal distress cases were 9 (10.84%) and maternal distress cases were about 11 (13.25%). Fetal mortality cases were 39 (37.14%), and maternal mortality cases were about 22 (20.95%) due to hepatic comma, intravascular coagulation, and hepatic failure. CONCLUSION: It was concluded that the prevalence of Hepatitis E during pregnancy is associated with high risk factors of unhygienic practices, blood transfusion, and noncompliance with universal infection control techniques. Maternal fatalities and fetal consequences were exacerbated by HEV infection.

7.
Clin Exp Med ; 23(1): 117-129, 2023 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-35119591

RESUMEN

Chronic hepatitis B (CHB) has a wide range of outcomes depending on host immune responses mainly Toll-like receptors (TLRs) signaling and released cytokines. Toll-like receptor 2 (TLR2) single nucleotide polymorphisms (SNPs) and interleukin 6 (IL-6) may influence the course of CHB. We aimed to elucidate the relation between TLR-2 polymorphism, IL-6 profile, and CHB progression. We analyzed TLR-2 polymorphism (SNP; rs3804099) in 185 CHB patients and 60 controls using TaqMan allelic discrimination assay. Serum IL-6 levels were assessed by ELISA. IL-6 levels were considerably higher in active CHB and cirrhotic patients compared with inactive carriers and controls (P < 0.001). IL-6 showed positive correlation with ALT and advanced fibrosis in active CHB patients (r = 0.31, P = 0.02). A significant positive correlation was noticed between IL-6 and HBV DNA PCR in all CHB groups. TT genotype of rs3804099/TLR-2 was significantly more prevalent in inactive carriers compared to active hepatitis patients (P = 0.04, OR = 0.39 and 95% CI: 0.16-0.95). Both heterozygous CT and mutant TT genotypes were significantly more frequent among inactive carriers compared to cirrhotic patients (P = 0.01, OR = 0.33, 95% CI: 0.13-0.81 and P = 0.009, OR = 0.32, 95% CI: 0.13-0.77). TT genotype was significantly related to lower IL-6 levels in active hepatitis and cirrhotic groups (P = 0.005 and P = 0.001, respectively) showing that TLR mutations would be associated with milder hepatitis activity and lower possibility for disease progression. There may be a positive association between TLR2 rs3804099 polymorphism and hepatitis B activity. IL-6 is a good indicator of CHB disease progression.


Asunto(s)
Hepatitis B Crónica , Interleucina-6 , Humanos , Interleucina-6/genética , Virus de la Hepatitis B , Receptor Toll-Like 2 , Hepatitis B Crónica/complicaciones , Estudios de Casos y Controles , Egipto , Polimorfismo de Nucleótido Simple , Cirrosis Hepática/complicaciones , Progresión de la Enfermedad
8.
Trop Med Infect Dis ; 8(2)2023 Jan 30.
Artículo en Inglés | MEDLINE | ID: mdl-36828508

RESUMEN

Hepatitis C virus (HCV) chronic infection is a major causative factor for several chronic liver diseases, including liver cirrhosis, liver cell failure, and hepatocellular carcinoma. The HCV has seven major genotypes. Genotype 4 is the most prevalent genotype in the Middle East, including Saudi Arabia, followed by genotype 1. The HCV genotype affects the response to different HCV treatments and the progression of liver disease. Currently, combinations of direct-acting antiviral drugs (DAAs) approved for the treatment of HCV achieve high cure rates with minimal adverse effects. Because real-world data from Saudi Arabia about the efficacy of DAAs are still limited, this study was conducted to assess the effectiveness of DAAs in treating patients with chronic hepatitis C and to identify the variables related to a sustained virologic response (SVR) in a real-world setting in Saudi Arabia. This prospective cohort study included 200 Saudi patients with chronic HCV who were 18 years of age or older and had been treated with DAAs at King Abdul-Aziz Specialized Hospital in Taif, Saudi Arabia, between September 2018 and March 2021. The response to treatment was assessed by whether or not an SVR had been achieved at week 12 post treatment (SVR12). An SVR12 was reached in 97.5% of patients. SVR12 rates were comparable for patients of different ages, between men and women, and between patients with and without cirrhosis. In addition, the SVR12 rates did not differ according to the infecting HCV genotype. In this study, the presence of cirrhosis and the patient's gender were independent predictors of who would not reach an SVR12 (known here as the non-SVR12 group) according to the results of univariate and multivariate binary logistic regression analyses based on the determinants of SVR12. In this population of patients with chronic HCV infection, all DAA regimens achieved very high SVR12 rates. The patients' gender and the presence of cirrhosis were independent factors of a poor response.

9.
In Vivo ; 36(1): 336-340, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-34972731

RESUMEN

BACKGROUND/AIM: Breast cancer is the most common cancer in Sudan. The p16 protein plays a vital role in the regulation of the cell cycle. PATIENTS AND METHODS: This study analysed the protein expression of p16 in 202 paraffin blocks from Sudanese women with breast cancer using immunohistochemistry. RESULTS: This study included 168 (83.2%), 16 (7.9%), and 18 (8.9%) patients with invasive ductal carcinoma, invasive lobular carcinoma, and papillary carcinoma, respectively. There were 95 cases (47.0%) with grade III, 70 cases (34.6%) with grade II, and 23 cases (11.4%) with grade I breast cancer. The hormone receptor status was available for 119 of the cases, and 31 (15.3%), 25 (12.4%), and 63 (31.2%) cases were positive for oestrogen, progesterone, and HER2 receptors, respectively. CONCLUSION: p16 protein expression was associated with high histologic grade, lymph node metastasis, and poor prognosis. p16 protein expression may potentially be used as a prognostic marker.


Asunto(s)
Neoplasias de la Mama , Carcinoma Ductal de Mama , Biomarcadores de Tumor/genética , Neoplasias de la Mama/genética , Carcinoma Ductal de Mama/genética , Femenino , Humanos , Pronóstico , Receptor ErbB-2/genética , Receptores de Progesterona/genética
10.
Placenta ; 124: 44-47, 2022 06 24.
Artículo en Inglés | MEDLINE | ID: mdl-35635853

RESUMEN

INTRODUCTION: The direction of blood movement in normal and abnormal placenta is curious from a morphometric point of view. Once pregnancy is compromised by an illness like hypertension, maternal and foetal distress can lead to negative outcomes. The quantitative variations in the blood vessels within the chorion and the chorionic villi in placentas from pregnancies are complicated by preeclampsia (PE) and are poorly defined. The purpose of this study was to calculate and explore the morphometric measurement of blood vessels involved in the progress of hypertension through pregnancy within the chorion and the chorionic villi among normotensive women (n = 39) versus a preeclamptic group (n = 35). METHODS: Measurements used a computerized morphometry system and a Vascular Medicine Institute (VMI) calculator. RESULTS: Our data showed a significant decrease in vessel area (VA), wall area (WA), lumen area (LA), mean wall thickness-boundary (MWTB), mean wall thickness-rosette (MWTR), mean diameter-rosette (MDR), mean wall thickness-skeleton (MWTS), and external diameter-skeleton (EDS) in preeclampsia women compared to normotensive women. There were no significant differences between preeclampsia and control group in lumen area. DISCUSSION: We concluded that preeclamptic chorion and chorionic villi vessels are linked with significant structural discrepancies; future studies should address morphological events that occur throughout pregnancy including associations between arterial elastic properties-mainly collagen and structural proteins in hypertensive patients. A more integrated approach involving parallel analysis of the effects of potential vasoactive factors on the morphology of foetal vessel alteration is also needed.


Asunto(s)
Hipertensión , Preeclampsia , Corion , Vellosidades Coriónicas/irrigación sanguínea , Femenino , Humanos , Hipertensión/complicaciones , Placenta/irrigación sanguínea , Embarazo
11.
In Vivo ; 36(3): 1513-1518, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35478129

RESUMEN

BACKGROUND/AIM: Breast cancer is a common type of cancer in Sudan. Numerous studies propose viral oncogenesis as an etiological factor for breast cancer. The aim of the study was to analyze the presence of the Epstein-Barr virus (EBV) using monoclonal antibodies against latent membrane protein 1 (LAMP1) and determine the correlation between the presence of EBV and clinicopathological characteristics. PATIENTS AND METHODS: This study used immunohistochemistry to analyze the presence of EBV in 202 samples from Sudanese women diagnosed with breast cancer. Clinicopathological data were collected from patient records from the Radiation and Isotopes Centre in Khartoum State, Republic of Sudan. RESULTS: This study included 202 patients 168 (83.2%), 16 (7.9%), and 18 (8.9%), diagnosed with invasive ductal carcinoma, invasive lobular carcinoma, and papillary carcinoma, respectively. Axillary lymph node metastasis was present in 57 (28.2%) of cases, while 11 patients (5.4%) tested positive for EBV. The mean age of patients was 48.14±14.4 years. EBV infection was more frequently detected in invasive ductal carcinoma cases, and EBV positivity was not associated with cancer type, grade, progesterone levels, and HER2 expression. On the other hand, a statistically significant association was found between EBV presence and lymph node involvement, estrogen receptor status, and age group. CONCLUSION: EBV may not play a vital role in the pathogenesis of breast carcinoma in Sudanese women.


Asunto(s)
Antineoplásicos Inmunológicos , Neoplasias de la Mama , Carcinoma Ductal , Infecciones por Virus de Epstein-Barr , Adulto , Anticuerpos Monoclonales , Neoplasias de la Mama/epidemiología , Neoplasias de la Mama/patología , Carcinoma Ductal/complicaciones , Infecciones por Virus de Epstein-Barr/complicaciones , Infecciones por Virus de Epstein-Barr/epidemiología , Infecciones por Virus de Epstein-Barr/patología , Femenino , Herpesvirus Humano 4 , Humanos , Incidencia , Masculino , Proteínas de la Membrana , Persona de Mediana Edad , Proteínas Virales
12.
Am J Transl Res ; 14(6): 3824-3839, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35836841

RESUMEN

OBJECTIVES: Diabetes mellitus is a multifactorial chronic disease that affects the human population and it is the third most common cause of death worldwide. Momordica charantia is used as popular folk medicine and its action against diabetes mellitus remains unclear. We investigated the inhibitory potentials of α-glucosidase, acetylcholinesterase, and biochemical profiling of M. charantia in alloxan-induced diabetic rat models. METHODS: An In vivo study was carried out by using twenty male albino Wistar rats randomly divided into five groups each comprising four rats. Diabetes mellitus was induced by single intraperitoneal administration of 80 mg/kg body weight of alloxan and treatment with plant extract was conducted for a period of thirty days to check their impact on body weight and differentblood values. Biochemical profiling and characterization were performed by in vitro assays and HPLC, and FTIR. Histopathologic effects of M. charantia were examined through automated image analysis. Results were analyzed through Tukey's test, a complete randomized design and two factorial designs under CRD. RESULTS: Methanolic extract demonstrated potent alpha-glucosidase (72.30 ± 1.17%) and acetylcholinesterase (50.12 ± 0.82%) inhibitory activities. HPLC analysis confirmed the existence of vital flavonoids, antioxidants, and saponins. FTIR revealed the presence of hydroxyl groups, esters, alkanes, alkenes, alkynes, ketones, alcohols, amines and carboxylic acids as major functional groups. Results of in vivo study demonstrated that co-administration of alloxan and methanolic extract of M. charantia significantly improved the levels of fasting blood glucose, glycated hemoglobin and insulin in diabetic rats. CONCLUSION: M. charantia can be recommended as a therapeutic adjunct for diabetic patients as it can provide favorable remedial action in the context of the diabetes continuum of metabolic syndrome.

13.
PeerJ ; 10: e13316, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35480558

RESUMEN

The peachfruit fly, Bactrocera zonata (Saunders) is a polyphagous pest in nature, belonging to order, Diptera and their respective family is Tephritidae. It mostly feeds on different crops, vegetables and fruits. Different traditional chemical insecticides have been used to control this notorious pest. Excessive consumption of pesticides has become a major threat to the fresh fruits trade since many importing countries refused to accept the shipments due to public health and environmental concerns. There is a growing trend to control these pests using the most effective biological control methods and other preventive measures have been adopted for reducing their attacks. Fungal agents have been used as biological agents to manage the attack of different insects pest through biological means. The present study was conducted to assess the virulence of three entomopathogenic fungi, Metarhizium anisopliae, Beauveria bassiana and Verticillium lecanii, against Bactrocera zonata stages under different laboratory conditions. The results showed that B. bassiana and M. anisopliae were more effective in pathogenicity and potentially kill at all stages of B. zonata as compared to V. lecanii. The highest mortality rate for the third larval instar and the pupal stage were recorded after exposure to the 1 × 1010 conidia/ml concentrations, B. bassiana, with 68.67% and 89.67%, respectively. Adult B. zonata flies were the most susceptible to all entomopathogenic fungi. However, M. anisopliae was more virulent against B. zonata adult flies than B. bassiana and V. lecanii at 1 × 1010 conidial concentration. Therefore, the entomopathogenic fungi B. bassiana and M. anisopliae can be used as an cost effective bio-insecticide in the integrated pest management programs to control B. zonata. This study will be helpful to overcome this pest through biological control means.


Asunto(s)
Insecticidas , Metarhizium , Tephritidae , Animales , Control Biológico de Vectores/métodos , Larva/microbiología , Esporas Fúngicas
14.
Infect Drug Resist ; 15: 3801-3814, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35875614

RESUMEN

Background and Aims: Reports examine quinolone resistance mechanisms among Pseudomonas spp. are sporadic in the Kingdom of Saudi Arabia (KSA). We previously examined the genetic bases of plasmid-mediated quinolone resistance among Pseudomonas spp. clinical isolates. This study investigated chromosomally mediated quinolone resistance mechanisms via investigation of the mutations in the gyrA and parC genes. Methods: The minimum inhibitory concentration (MIC) to different quinolones was determined. Twenty-nine quinolone resistant Pseudomonas spp. clinical isolates were included. The gyrA and parC genes were sequenced by Sanger capillary electrophoresis. Multiple sequence alignment for the translated gyrA and parC genes was performed to identify mutation sites. Results: Of the 29 isolates, 27 isolates were P. aeruginosa and two were P. putida. The cluster analysis of the quinolone susceptibility pattern revealed seven susceptibility phenotypes (A-G) based on susceptibility patterns rather than the MIC values. Also, 22 different susceptibility phenotypes were detected based on MIC values. All isolates exhibited a missense mutation at position 83 (S83I/T/F) of the gyrA gene in addition to six missense mutations at positions outside the QRDR of this gene. In addition, 82.8% (24/29) of the isolates harbored a missense mutation in the parC gene at position 87 (S87L), along with six novel mutations outside the QRDR of the parC gene. Haplotyping of the gyrA, parC, and the overall QRDR revealed six, 10, and 13 different haplotypes, respectively. Conclusion: This study documents the incidence of the commonly reported mutations in the gyrA and parC genes in addition to novel mutations in these genes among Pseudomonas spp. clinical isolates recovered from KSA. Together with our previous findings, these data provide an insight into the genetic background of quinolone resistance among Pseudomonas spp. clinical isolates in KSA.

15.
PeerJ ; 10: e14018, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36320566

RESUMEN

Many biotic and abiotic factors influence the production of wheat (Triticum aestivum L.). Among biological agents, aphids are destructive pests effecting wheat yield drastically. This study was designed to evaluate the impact of foliar Jasmonic acid spray on aphid population as well as on plant growth during aphid infestation in two wheat varieties i.e., Borlaug-2015 and Zincol-2015. Plants are cultivated in pots and treated with jasmonic acid at concentrations of 0.1 and 1 mM (JA). The results revealed that length of shoot and roots decreased after aphid stress and was improved (21-24%) by JA spray. Photosynthetic pigments increased after applying the jasmonic acid spray compared to control plants. Jasmonic acid spray helped the plants to recover from aphid stress by enhanced production of antioxidant enzymes CAT (Catalase) (65-71%), SOD (Superoxide dismutase) (71-74%) and POD (Peroxidase) (61-65%). Consequent to improved defence system, plants treated with JA had fewer aphids as compared to control (60-73% reduction), 24 h after spray. The higher concentration of JA (1 mM) proved more effective as compared to 0.1 mM jasmonic acid. Moreover, Zincol-2015 appeared tolerant as compared to Borlaug-2015 against aphid infestation. The application of jasmonic acid as an exogenous foliar application showed an overall positive impact on the physiological and biochemical attributes of both varieties. It helps the plants to enhance resistance against the biotic stress and can be adopted as future alternative for aphid management. However, detailed studies regarding understanding of underlying molecular mechanisms are needed to optimize the mode for field application.


Asunto(s)
Áfidos , Animales , Áfidos/fisiología , Triticum , Ciclopentanos/farmacología , Oxilipinas/farmacología
16.
Int J Gen Med ; 15: 2427-2436, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35264879

RESUMEN

Purpose: Circulatory microRNAs (miRNAs) have the potential to be employed as markers for cancer detection and as prognostic tools for disease management. As a result, our goal was to explore the effectiveness of serum miRNA-96-5p and miRNA-99a-5p as diagnostic tools in hepatocellular carcinoma (HCC). Patients and methods: Blood samples were collected from 55 patients with HCV-induced HCC, 55 patients with HCV-induced liver cirrhosis, and 55 healthy controls. The expression levels of miRNA-96-5p and miRNA-99a-5p were measured using quantitative RT-PCR. Results: miRNA-96-5p expression levels were increased in HCC patient sera, while miRNA-99a-5p levels were reduced. According to ROC curve analysis, using a combination of circulating miRNA-96-5p, miRNA-99a-5-, and alpha-fetoprotein (AFP) improves the accuracy of diagnoses for HCC, with an area under the curve (AUC) of 0.97, compared to AUCs of 0.82, 0.86, and 0.73, respectively, for the individual biomarkers. Furthermore, the present data suggested that higher serum miRNA-96-5p levels were linked to larger tumors and metastasis, whereas lower serum miRNA-99a-5p levels were exclusively linked to HCC metastasis. Conclusion: Using miRNA-96-5p and miRNA-99a-5p in combination with AFP increased both sensitivity and specificity for the diagnosis of HCC. Furthermore, serum levels were linked to tumor size and metastasis. These findings suggested that serum miRNA-96-5p and miRNA-99a-5p could be used as non-invasive biomarkers for the diagnosis of HCC.

17.
Sci Rep ; 12(1): 3342, 2022 02 28.
Artículo en Inglés | MEDLINE | ID: mdl-35228602

RESUMEN

The current communication is designed by keeping in the mind high heat transfer capabilities of nanoliquids with the dispersion of diversified-natured nanoparticles in poorly conducting base liquids. Here, an amalgamation of metallic (Cu) and hybridization of metallic and non-metallic oxide (Cu-TiO2) nanoparticles to uplift thermophysical attributes of water is deliberated. The magnetically affected flow between rotating disks under the impact and permeability aspect is assumed. Empirical relations for effective dynamic viscosity, density, and heat capacitance to show mesmerizing features of obliged nanoparticles are also expressed. In addition, mathematical relations also depend on morphological factors like shape, size, and diameter of inducted nanoparticles. The mathematical formulation of the problem is conceded in the form of a system of ODEs after using similarity transformation on dimensional PDEs. Simulations of the complex coupled differential structure are solved by using a numerical approach by employing shooting and Runge-Kutta procedures jointly. The impact of flow concerning variables on associated distributions is revealed through tabular and graphical manner. Quantities of engineering interest associated with work like wall friction and thermal flux coefficients at walls of the disk are also calculated. It is deduced from an examination that the addition of metallic particles raises heat transfer more than non-metallic particles. A significant impression of magnetic field on shear stress is executed by hybrid nanoparticles along the surface of disks. In addition, elevation in Nusselt number and depreciation in skin friction coefficient is revealed against increasing magnitude of nanoparticle volume fraction. A positive trend in skin friction coefficient is manifested against the increasing magnitude of Reynold number. It is also observed that by increasing the size and shape of hybrid nanoparticles thermal conductivity and viscosity of the base fluid increases.


Asunto(s)
Nanopartículas , Fricción , Calor , Nanopartículas/química , Fenómenos Físicos , Conductividad Térmica
18.
Oxid Med Cell Longev ; 2022: 6702773, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35178158

RESUMEN

Doxorubicin (DOX) is an effective anticancer agent with a wide spectrum of activities. However, it has many adverse effects on various organs especially on the liver. Thymol, one of the major components of thyme oil, has biological properties that include anti-inflammatory and antioxidant activities. Thus, this study was designed to examine thyme oil and thymol for their ability to prevent doxorubicin-induced hepatotoxicity in Wistar rats. Hepatotoxicity was induced by an intraperitoneal injection of doxorubicin, at a dose of 2 mg/kg bw/week, for seven weeks. Doxorubicin-injected rats were supplemented with thyme oil and thymol at doses 250 and 100 mg/kg bw, respectively, four times/week by oral gavage for the same period. Treatment of rats with thyme oil and thymol reversed the high serum activities of AST, ALT, and ALP and total bilirubin, AFP, and CA19.9 levels, caused by doxorubicin. Thyme oil and thymol also reduced the high levels of TNF-α and the decreased levels of both albumin and IL-4. These agents ameliorated doxorubicin-induced elevation in hepatic lipid peroxidation and associated reduction in GSH content and GST and GPx activities. Further, the supplementation with thyme oil and thymol significantly augmented mRNA expression of the level of antiapoptotic protein Bcl-2 and significantly downregulated nuclear and cytoplasmic levels of the hepatic apoptotic mediator p53. Thus, thyme oil and thymol successfully counteracted doxorubicin-induced experimental hepatotoxicity via their anti-inflammatory, antioxidant, and antiapoptotic properties.


Asunto(s)
Enfermedad Hepática Inducida por Sustancias y Drogas/tratamiento farmacológico , Doxorrubicina/efectos adversos , Inflamación/tratamiento farmacológico , Hepatopatías/tratamiento farmacológico , Hepatopatías/etiología , Aceites Volátiles/uso terapéutico , Estrés Oxidativo/efectos de los fármacos , Animales , Apoptosis/efectos de los fármacos , Humanos , Hepatopatías/patología , Masculino , Aceites Volátiles/farmacología , Aceites de Plantas , Ratas , Ratas Wistar , Timol , Thymus (Planta)
19.
Sci Rep ; 12(1): 2302, 2022 Feb 10.
Artículo en Inglés | MEDLINE | ID: mdl-35145142

RESUMEN

MHD Natural convection, which is one of the principal types of convective heat transfer in numerous research of heat exchangers and geothermal energy systems, as well as nanofluids and hybrid nanofluids. This work focuses on the investigation of Natural convective heat transfer evaluation inside a porous triangular cavity filled with silver-magnesium oxide/water hybrid nanofluid [H2O/Ag-MgO]hnf under a consistent magnetic field. The laminar and incompressible nanofluid flow is taken to account while Darcy-Forchheimer model takes account of the advection inertia effect in the porous sheet. Controlled equations of the work have been approached nondimensional and resolved by Galerkin finite element technique. The numerical analyses were carried out by varying the Darcy, Hartmann, and Rayleigh numbers, porosity, and characteristics of solid volume fraction and flow fields. Further, the findings are reported in streamlines, isotherms and Nusselt numbers. For this work, the parametric impact may be categorized into two groups. One of them has an effect on the structural factors such as triangular form and scale on the physical characteristics of the important outputs such as fluidity and thermal transfer rates. The significant findings are the parameters like Rayleigh and slightly supported by Hartmann along with Darcy number, minimally assists by solid-particle size and rotating factor as clockwise assists the cooler flow at the center and anticlockwise direction assists the warmer flow. Clear raise in heat transporting rate can be obtained for increasing solid-particle size.

20.
Vaccines (Basel) ; 10(1)2021 Dec 27.
Artículo en Inglés | MEDLINE | ID: mdl-35062690

RESUMEN

Class II genotype VII Newcastle disease viruses (NDV) are predominant in the Middle East and Asia despite intensive vaccination programs using conventional live and inactivated NDV vaccines. In this study, the protective efficacies of three commercial vaccine regimes involving genotype II NDV, recombinant genotype VII NDV-matched, and an autogenous velogenic NDV genotype VII vaccine were evaluated against challenge with velogenic NDV genotype VII (accession number MG029120). Three vaccination regimes were applied as follows: group-1 received inactivated genotype II, group-2 received inactivated recombinant genotype VII NDV-matched, and group-3 received velogenic inactivated autogenous NDV genotype VII vaccines given on day 7; for the live vaccine doses, each group received the same live genotype II vaccine. The birds in all of the groups were challenged with NDV genotype VII, which was applied on day 28. Protection by the three regimes was evaluated after infection based on mortality rate, clinical signs, gross lesions, virus shedding, seroconversion, and microscopic changes. The results showed that these three vaccination regimes partially protected commercial broilers (73%, 86%, 97%, respectively, vs. 8.6% in non-vaccinated challenged and 0% in non-vaccinated non-challenged birds) against mortality at 10 days post-challenge (dpc). Using inactivated vaccines significantly reduced the virus shedding at the level of the number of shedders and the amount of virus that was shed in all vaccinated groups (G1-3) compared to in the non-vaccinated group (G-4). In conclusion, using closely genotype-matched vaccines (NDV-GVII) provided higher protection than using vaccines that were not closely genotype-matched and non-genotype-matched. The vaccine seeds that were closely related to genotype VII.1.1 provided higher protection against challenge against this genotype since it circulates in the Middle East region. Updating vaccine seeds with recent and closely related isolates provides higher protection.

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