Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 64
Filtrar
1.
Cureus ; 16(2): e54033, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38481928

RESUMO

Introduction Despite the recent advances in implant design, the choice of an internal fixation modality for extra-articular distal tibia fractures remains controversial, and there is sparse literature comparing the stability of intramedullary nails and locked plates for such fractures. Hence, we conducted a biomechanical study on an AO type 43A3 tibia fracture cadaveric model stabilized by four different constructs, viz., intramedullary (IM) interlocking nail, anteromedial plate, anterolateral plate, and posterior plate. An AO type 43A3 fracture is defined as an extra-articular fracture of the distal tibia with metaphyseal comminution. Methods A biomechanical comparative study on formalin-preserved human cadaveric tibiae was undertaken; a total of four groups were tested, with eight bones in each group. Out of the 32 cadaveric tibiae, 19 bones belonged to male cadavers, and 13 bones belonged to female cadavers. All bones were dissected from age-appropriate cadavers and fixed with an implant, followed by the creation of a 1 cm osteotomy to simulate an AO type 43A3 fracture. All fixation constructs were subjected to three-point bending tests in the anteroposterior (AP) and mediolateral (ML) planes. Three parameters, viz., bending stiffness, peak fracture gap angle, and neutral zone, were evaluated on the load-displacement curves. A fixation construct was deemed biomechanically stable if it had a high bending stiffness, a low neutral zone (inherent toggle in the construct by its weight), and a low peak fracture gap angle. Results Out of the four implants tested, locked IM nails exhibited the maximum biomechanical stability in terms of higher bending stiffness, smaller peak fracture gap angle, and smaller neutral zones. The IM nail exhibited the highest bending stiffness in the AP plane, and the anterolateral plate had the lowest bending stiffness, and the difference was statistically significant (p= 0.032). In the AP plane, the anterolateral plate exhibited a bending stiffness of 1.51 ± 0.69 Nm/degree, whereas the intramedullary nail exhibited a bending stiffness of 2.34 ± 0.81 Nm/degree, and the posterior locked plate had a bending stiffness of 1.57 ± 0.44 Nm/degree. In the ML plane, the anterolateral plate exhibited the highest neutral zone as compared to the intramedullary nail, which had the lowest neutral zone, and the difference was statistically significant (p = 0.019). The intramedullary nail exhibited the lowest neutral zone of 0.46 ± 0.31 degrees, whereas the posterior locked plate exhibited a neutral zone of 0.78 ± 0.43 degrees in the ML plane. The anterolateral plate exhibited a neutral zone of 1.43 ± 1.00 (expressed as mean ± SD) degrees in the mediolateral plane. Conclusion Our biomechanical study supports the recommendations of using a locked intramedullary nail for AO type 43A3 fractures. We concluded that the anterolateral plate construct exhibited the least biomechanical stability, in terms of lower AP bending stiffness and higher neutral zone. If the surgeon must choose a locked plating technique for any reason, the anterolateral locking plate should be avoided. If plating is at all required, we can recommend both anteromedial and posterior locked plating as biomechanically sound options.

3.
World J Clin Cases ; 11(34): 8147-8152, 2023 Dec 06.
Artigo em Inglês | MEDLINE | ID: mdl-38130786

RESUMO

BACKGROUND: Manipulation under anesthesia (MUA) of the shoulder joint is a commonly used method for the treatment of adhesive capsulitis. Though it has been known to be associated with a variety of complications, there is a paucity of studies describing the arthroscopic findings after MUA. AIM: To describe the arthroscopic findings in patients with idiopathic adhesive capsulitis of the shoulder after MUA. METHODS: We recruited 28 patients with idiopathic adhesive capsulitis who underwent arthroscopic capsular release. Manipulation of the shoulder was performed under anesthesia in all of these patients before capsular release. Intra-articular findings were recorded during arthroscopic capsular release in these patients. RESULTS: All patients showed the presence of synovitis. Twenty-seven patients showed tears in the capsule on the anterior aspect. One patient had an avulsion of the anterior rim of the glenoid and labrum following the manipulation. Four patients had partial rotator cuff tears, and one patient showed a superior labrum anterior posterior lesion, which was not diagnosed preoperatively on magnetic resonance imaging. CONCLUSION: MUA leads to rupture of the capsule, which is the desired outcome. However, the site of rupture of the capsule is dependent on the maneuvers of MUA. In addition, partial tears of the rotator cuff and osteochondral fractures of the glenoid can also occur.

4.
J Orthop Case Rep ; 13(10): 75-79, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37885637

RESUMO

Introduction: Posterior cruciate ligament (PCL) avulsion fractures are the most common type of isolated PCL injuries. Avulsion from the tibia is more common than femoral attachment. They can present as isolated tibial avulsion or as a component of posterior tibial rim fractures. The size, geometry of the fragment, and associated ligamentous injury dictate the method of fixation. Case Report: A 32-year-old patient presented with posterior rim tibial plateau fracture with PCL avulsion after a motor vehicle accident. We used Burke and Schaffer approach and fixed the ligamentous avulsion and rim fracture using high tensile sutures and knotless swivel lock anchors. Conclusion: PCL avulsions can present either as an isolated injury or as a part of a complex injury involving the anterior or posterior tibial rim. These complex injuries occur due to the hyperextension mechanism which results in either anterior tibial plateau compression fracture or posterior rim avulsion injuries. The treatment of such injuries requires addressing both ligamentous and bony components. The size, geometry of the fragment, and associated ligamentous injury dictate the method of fixation. We described the fixation of both ligamentous and rim avulsion using sutures and knotless anchors.

5.
Funct Integr Genomics ; 23(4): 303, 2023 Sep 19.
Artigo em Inglês | MEDLINE | ID: mdl-37723408

RESUMO

The genome size of the little millet Panicum sumatrense is unknown, although its genome is fairly diploid (2n = 4x = 36). Despite tremendous nutritional value and adaptability to adverse climatic conditions, P. sumatrense use was limited by their low palatability, coarse grain, and lack of variety of culinary preparations. Hence, understanding how to vary their usage to offer food and nutritional security in the continuously changing modern world, the proposed study was aimed to determine potential genes and metabolites implicated in drought resistance. The drought-resistant genotype of tiny millet OLM-203/Tarini was offered in pots under both relaxed and demanding circumstances. The experimental seedlings were 32 days old and had been under water stress for 23 days. A total of 7606 genes were compared between 23 and 32 days for roots and 7264 total genes were compared between 23 and 32 days for leaves, according to a research on differential expression genes (DEGs). Twenty essential genes for drought tolerance were up-or down-regulated in the control and treated roots of the OLM-203 genotype. For instance, the genes RS193 and XB34 were up-regulated in leaves while, WLIM1 was found to be down-regulated. Gene SKI35 was up-regulated in roots, whereas MPK6 and TCMOp1 were down-regulated in root samples. The roots and leaves of the tiny millet OLM-203 genotype expressed 36 up-regulated and 21 down-regulated serine transcripts, respectively. Gene annotations for leaf samples were classified as having "molecular function" (46%), "cellular component" (19%), and "biological process" (35%), while root sample gene annotations were categorized as having "biological process" (573 contigs), "molecular function" (401 contigs), and "cellular components" (166 contigs). Noteworthy, polyamines play a crucial role in drought stress tolerance in the genotype, and it was found that top ten DEGs encoding for polyamines were common in two tissues (leaf and root). Collectively, transcriptomics profiling (RNA-seq) unveiled transcriptional stability drought stress provide a new insight in underlying modus of operandi in little millet genotype "OLM-203/Tarini" in response to heat stress.


Assuntos
Resistência à Seca , Panicum , Transcriptoma , Genótipo , Secas
6.
Indian J Orthop ; 57(7): 1158-1163, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37384008

RESUMO

Menisci are crescent-shaped fibrocartilagenous structures that increase the tibiofemoral congruity, act as shock absorbers, and provide secondary anteroposterior stability. The root tears affect the biomechanical integrity of the whole meniscus, simulating a total meniscectomy, which can lead to early degeneration of the joint. Most of the root tears affect the posterior part rather than the anterior root. Very few reports have been described in the literature regarding anterior root tears and repairs. We present two such patients with anterior meniscal root tears, one of the lateral meniscus and one of the medial meniscus.

7.
J Orthop Case Rep ; 13(3): 72-75, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37187812

RESUMO

Introduction: The anterior knee pain is the most common post-operative complaint associated with anterior cruciate ligament reconstruction (ACLR) using bone patellar tendon bone graft. It has been attributed to various factors such as loss of terminal extension, infrapatellar branch neuroma, and also due to the bone harvest site defect itself. Bone grafting of the defects in the patella and tibia has been shown to decrease anterior knee pain. At the same time, it also prevents post-operative stress fractures. Surgical Technique: Numerous bone pieces were produced in the knee joint as a result of the drilling during ACL reconstruction. Using a wash cannula and tissue grasper, all the bone fragments were gathered into a kidney tray. The bony fragments with the saline which were collected in the metal container were allowed to sediment at the bottom. The bone that was sedimented in the metal container was collected by decantation and placed into the bony defects of the patellar and tibial sides. Conclusion: Bone grafting of the defects in the patella and tibia has been shown to decrease anterior knee pain. Our technique is cost-effective as there is no requirement for special instrumentation like coring reamers, and no requirement for allograft or bone substitutes. Second, there is no morbidity associated with autografts harvested from elsewhere, we used the bone generated during the ACLR itself.

8.
PEC Innov ; 2: 100102, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37214491

RESUMO

Objective: Voluntary counseling and testing (VCT) is an integral component of HIV prevention and care strategies worldwide. VCT is considered as an effective strategy in risk reduction among sexually active youth. There is a high burden of HIV in Ethiopia despite a considerable scale up of comprehensive HIV interventions. Hence, the aim of this study was to assess the level of knowledge, attitude and practice of VCT uptake towards HIV among youth of rural part of Tepi town, Ethiopia. Method: A cross sectional study was carried out from May to August 2020. Total numbers of 127 youths in the age group of 15-24 years were recruited in a self-administered questionnaire with 100% response rate. Descriptive analysis was referred to describe the data. Binary logistic regression analysis was used to measure the effect of different variables by computing odds ratio. Multivariable analyses were utilized to determine the relative effect of explanatory variables. Results: The study showed that out of 127 total youth respondents, 111 (87.4%) of the respondents have good knowledge and 99 (78%) had a positive attitude towards VCT. Whereas, 86 (67.7%) of the respondents are aware of practicing VCT on HIV in the past. Conclusions: The findings revel that gender and father's educational status were among the socio-demographic variables that showed statistically significant association with one or more variables affecting youths' knowledge towards VCT uptake. As such, perceived risk of HIV infection, educational level, gender and marital status were statistically responsible for VCT uptake.

9.
Front Neurosci ; 17: 1153422, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37113148

RESUMO

A healthy gut flora contains a diverse and stable commensal group of microorganisms, whereas, in disease conditions, there is a shift toward pathogenic microbes, termed microbial dysbiosis. Many studies associate microbial dysbiosis with neurodegenerative diseases, including Alzheimer's disease (AD), Parkinson's disease (PD), Multiple sclerosis (MS), and Amyotrophic lateral sclerosis (ALS). Although, an overall comparative analysis of microbes and their metabolic involvement in these diseases is still lacking. In this study, we have performed a comparative analysis of microbial composition changes occurring in these four diseases. Our research showed a high resemblance of microbial dysbiosis signatures between AD, PD, and MS. However, ALS appeared dissimilar. The most common population of microbes to show an increase belonged to the phyla, Bacteroidetes, Actinobacteria, Proteobacteria, and Firmicutes. Although, Bacteroidetes and Firmicutes were the only phyla that showed a decrease in their population. The functional analysis of these dysbiotic microbes showed several potential metabolic links which can be involved in the altered microbiome-gut-brain axis in neurodegenerative diseases. For instance, the microbes with elevated populations lack pathways for synthesizing SCFA acetate and butyrate. Also, these microbes have a high capacity for producing L-glutamate, an excitatory neurotransmitter and precursor of GABA. Contrastingly, Tryptophan and histamine have a lower representation in the annotated genome of elevated microbes. Finally, the neuroprotective compound spermidine was less represented in elevated microbes' genomes. Our study provides a comprehensive catalog of potential dysbiotic microbes and their metabolic involvement in neurodegenerative disorders, including AD, PD, MS, and ALS.

10.
Biomed Res Int ; 2023: 4214817, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37101692

RESUMO

Cervical cancer is a critical imperilment to a female's health due to its malignancy and fatality rate. The disease can be thoroughly cured by locating and treating the infected tissues in the preliminary phase. The traditional practice for screening cervical cancer is the examination of cervix tissues using the Papanicolaou (Pap) test. Manual inspection of pap smears involves false-negative outcomes due to human error even in the presence of the infected sample. Automated computer vision diagnosis revamps this obstacle and plays a substantial role in screening abnormal tissues affected due to cervical cancer. Here, in this paper, we propose a hybrid deep feature concatenated network (HDFCN) following two-step data augmentation to detect cervical cancer for binary and multiclass classification on the Pap smear images. This network carries out the classification of malignant samples for whole slide images (WSI) of the openly accessible SIPaKMeD database by utilizing the concatenation of features extracted from the fine-tuning of the deep learning (DL) models, namely, VGG-16, ResNet-152, and DenseNet-169, pretrained on the ImageNet dataset. The performance outcomes of the proposed model are compared with the individual performances of the aforementioned DL networks using transfer learning (TL). Our proposed model achieved an accuracy of 97.45% and 99.29% for 5-class and 2-class classifications, respectively. Additionally, the experiment is performed to classify liquid-based cytology (LBC) WSI data containing pap smear images.


Assuntos
Colo do Útero , Neoplasias do Colo do Útero , Feminino , Humanos , Colo do Útero/patologia , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/patologia , Teste de Papanicolaou/métodos , Esfregaço Vaginal/métodos
11.
Cureus ; 15(1): e33342, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36741675

RESUMO

Infections after arthroscopic procedures are rare. Infection due to fungal organisms is rarer and difficult to diagnose due to its insidious nature and chronic presentation but when neglected has devastating consequences. We present a 23-year-old immunocompetent adult post-arthroscopic meniscal repair with fungal surgical site infection. The patient underwent open debridement and was started on antifungals. His surgical wound healed and with physiotherapy he regained his full range of movement.

12.
J Orthop Case Rep ; 13(12): 44-47, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38162371

RESUMO

Introduction: Osteoid osteoma is a common benign osteoblastic lesion of the bone. Although it commonly affects the cortex of long bones, it rarely involves the cancellous portion of the small bones such as phalanges. The occurrence of osteoid osteoma in phalanges poses a diagnostic dilemma. Case Report: In our case report, we presented a 26-year-old patient with long-standing pain over the great toe. The radiographs and magnetic resonance imaging (MRI) were unable to diagnose the lesion, and a single-photon emission computerized tomography scan picked up the nidus. She underwent radiofrequency ablation and post-procedure she was relieved of her symptoms. Conclusion: Osteoid osteoma of the phalanges is uncommon, and at times, routine radiographs and MRIs might not point us to the correct diagnosis. As the prognosis is excellent after the treatment is instituted, osteoid osteoma should always be a differential in chronic foot pain with nocturnal predominance.

13.
Cureus ; 14(11): e31524, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36532942

RESUMO

Hallux valgus is a common forefoot deformity characterized by medial deviation of the first metatarsal and lateral deviation of the hallux. More than 150 procedures have been described for the hallux valgus deformity with no proven superiority of one over the other. The initial osteotomies are open, and with the advent of power and micro instruments, the osteotomies were manageable via mini incisions and percutaneous procedures. The minimally invasive procedures have been divided into three generations. The first-generation osteotomies involve wedge correction. The second and third-generation osteotomies are translational. The second generation is a simple osteotomy, and the third is a chevron-type osteotomy. In our technique, we have used a hybrid procedure of second and third-generation procedures. The technique uses an ultrasonic bone scalpel to create a transverse sub-capital osteotomy which is then fixed with screws for a stable construct.

14.
J Parasit Dis ; 46(3): 643-652, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-36091269

RESUMO

Intestinal parasitic infections are distributed virtually throughout the world, with high prevalence rates in tropical and sub-tropical parts of the world as well as in Ethiopia. Children between age groups of 5-10 years are at the highest risk of infection. The intestinal nematode Ascaris lumbricoides infects approximately 25% of the world's population annually. Hence, this study was the first attempt to assess the prevalence and associated factors of A. lumbricoides infection among the school children from Offa district, Ethiopia. A cross-sectional study was conducted from January to April, 2020 in three selected elementary school. Data were collected through questionnaires and stool samples examination. The overall prevalence of A. lumbricoides was noted as 41.4% and was the leading cause of intestinal parasitoids followed by Schistosoma mansoni (27.6%), Trichuris trichiura (18.1%) and Strongyloides stercoralis (4.1%). Children age group between 5 and 10 years found more susceptible to the infection. Eating habits like unwashed raw vegetables (P = 0.035), absence of toilets (P = 0.000), children who defecate in open field (P = 0.041), drinking unprotected water (P = 0.034), toilet without cover (P = 0.027), lack of hand washing before meal and after defecation (P = 0.000), (P = 0.048) were the key factors significantly associated with A. lumbricoides infection. The present study showed that A. lumbricoides was a major health problem among school children and requires annual de-worming to control morbidity associated with intestinal parasites.

15.
J Trop Med ; 2022: 1417804, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35784943

RESUMO

Onchocerciasis is a neglected tropical disease that is prevalent throughout Africa, including developing countries such as Ethiopia. It affects around 37 million people, the majority of whom are from Africa. As a result, the study was designed to look into the community's knowledge, attitude, and practice about the onchocerciasis elimination campaign. Four communities from Gesha town, Southwest Ethiopia, were chosen. The population was selected using a basic random selection procedure, and 312 people were identified for the study based on the eligibility requirements, with 302 (96.79%) of them responding correctly. The data were analyzed using the descriptive method with the SPSS program version 20. It was discovered that the majority of communities (89.4%) are aware of onchocerciasis. They also have a good awareness of the severity, preventability, therapy, and mode of transmission, yet they have certain misunderstandings. The communities attitude towards community directed therapy (CDT) using Ivermectin is positive (68.5%). According to 56% of the community, offering incentives for community drug distributors (CDD) has the potential to make the elimination campaign more successful. Different measures, such as avoiding any activities near the river, are important in the process of eradicating this disease at the community level. As a result, the respondent demonstrates that covering the lower body part lessens the black fly's vulnerability because they may attack below the knee. In general, community awareness and attitude are required to eradicate this disease from the district. In addition, increased stakeholder participation and offering motivating rewards for CDT are required to make the elimination program a success.

16.
Biomed Res Int ; 2022: 5908938, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35445136

RESUMO

The three main intestinal helminth infections (IHIs), ascariasis, trichuriasis, and hookworm, are common clinical disorders worldwide. These IHIs are more prevalent in tropics and subtropical countries especially in developing countries like sub-Saharan Africa responsible for morbidity, mortality, and physical as well as intellectual growth retardation in children. In Ethiopia, the burden of IHIs appears in all ages mainly due to factors like lack of education, low socio-economic status, and inadequate supply of drugs and proper awareness. The present study was carried out to access the prevalence of intestinal helminth infections and associated risk factors among school children in Adola town from Guji Zone, Oromia, Ethiopia, from August 2019 to December 2019. 404 stool samples were collected in a clean, dry, screw-capped, and wide-mouthed plastic container, fixed with 10% formal-saline solution, and transported to the Adola Hospital laboratory for further microscopic analysis by wet mount following formal ether concentration technique. Data were analyzed using SPSS version 20 by binary logistic regression model using odd ratio with 95% CI. The overall prevalence of IHIs among school children was found to be 33.91% (137/404). Rate of double infection was noted to be 2.72% (11/404). Most dominant species was Ascaris lumbricoides (8.9%) followed by Hymenolepis nana (7.7%), Taenia saginata (5.4%), hookworm (4.7%), Trichuris trichiura (2.5%), Schistosoma mansoni (2.2%), Enterobius vermicularis (1.7%), and Strongyloides stercoralis (0.7%), respectively. Highest prevalence was observed in male students (39.6%) compared to female students (28.8%) (P < 0.05). The prevalence of IHIs among school children in the age group of 6-10, 11-15, 16-20, and above 20 was 49.6%, 35.8%, 10.9%, and 3.6%, respectively (P < 0.05). IHI was significantly associated with some of the risk factors such as gender, educational level of students', toilet usage habit, habit of hand washing, hand washing habit before feeding and after defecation, purpose of hand washing, and awareness to intestinal helminths (P < 0.05). In the study area, the prevalence of IHIs is moderately high and represents a public health problem in the school children. Therefore, all stakeholders should pay attention to raise awareness about health education programs such as proper personal hygiene, environmental sanitation, improving the quality of drinking water, and treatment to reduce the consequences of intestinal helminths.


Assuntos
Helmintíase , Enteropatias Parasitárias , Ancylostomatoidea , Animais , Ascaris lumbricoides , Criança , Estudos Transversais , Etiópia/epidemiologia , Fezes/parasitologia , Feminino , Helmintíase/epidemiologia , Helmintíase/parasitologia , Humanos , Enteropatias Parasitárias/epidemiologia , Enteropatias Parasitárias/parasitologia , Masculino , Prevalência , Fatores de Risco
17.
PLoS One ; 17(3): e0264812, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35290402

RESUMO

Giardiasis is a protozoan disease caused by the parasite Giardia lamblia. Around 200 million people are infected worldwide annually while, 500,000 deaths were reported each year. The infection rates were between 2-5% in the developed nations and 20-30% in the developing countries. The parasite is associated with poverty, poor sanitation, lack of clean and safe drinking water supply, and poor personal hygiene. The aim of our study was to assess the prevalence rate and associated risk factors of G. lamblia infection among the elementary school children at Loka Abaya town, Ethiopia. A cross-sectional study was conducted from December 2018 to July 2019. A total number of 422 students were selected by using simple random sampling. Structured and semi-structured questionnaire was used to identify known risk factors such as environmental, socio-demographic, and behavioural. Stool specimens were collected from the study subjects and examined using direct smear method, microscopically. A bivariate and multivariate logistic regression analysis was done. P value less than 0.05 at 95% of the confidence interval was considered statistically significant. The overall prevalence rates of G. lamblia infection were 27.1%. Rural school from Aregeda [AOR: 9.997, P = 0.005], age group of 6-9 years [AOR: 2.305, P = 0.019], consuming tap water [AOR: 0.011, P = 0.006], hand washing habit after defecation with water only [AOR = 0.313, P = 0.040], use of soap and water [AOR: 0.046, P = 0.000] were the factors which are found to be associated with the parasite infection when compared to urban school. As such, the prevalence of G. lamblia infection was found to be high in the studied area among school children. Thus, scaling-up of access to safe water, toilets, education, and health facilities are required to possibly eradicate this predicament.


Assuntos
Giardia lamblia , Giardíase , Parasitos , Animais , Criança , Estudos Transversais , Etiópia/epidemiologia , Giardíase/epidemiologia , Governo , Humanos , Prevalência , Fatores de Risco , Água
18.
Water Environ Res ; 93(11): 2727-2739, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34415655

RESUMO

The present study utilized Aspergillus spp. for the synthesis of silver nanoparticles (AgNPs); the developed AgNPs were categorized using analytical techniques, that is, ultraviolet-visible (UV-vis) spectrophotometer, Zeta-potential, dynamic light scattering (DLS), and transmission electron microscopy (TEM). A sharp peak of 463 nm highlighted the synthesis of AgNPs; further Zeta-potential of -16 mV indicates stability of synthesized AgNPs. The TEM micrograph showed spherical and hexagonal shapes of synthesized AgNPs of 6-25 nm. The photocatalytic activity of fungal-mediated AgNPs was evaluated for degradation of reactive yellow dye in the concentration range of 20-100 mg L-1 . The results showed efficient degradation of dye using AgNPs in short span of time. For antibacterial activity, synthesized AgNPs, antibiotic, and AgNPs + antibiotic were tested. As per results, the zone of inhibition (ZOI) of AgNPs showed the values of 13 and 10 mm for Escherichia coli and Staphylococcus aureus, respectively. Further, the ZOI of penicillin highlighted the values of 18 and 17 mm for E. coli and S. aureus, respectively. When AgNPs and penicillin were used in combination, a clear synergistic effect was observed; the ZOI showed 0.49- and 0.36-fold increase in area against E. coli and S. aureus, respectively, in comparison with penicillin or AgNPs alone. Further, the leftover biomass (retentate biomass) was used to decolorize the reactive yellow dye at different initial concentration ranging from 20 to 100 mg L-1 . It was observed that 1 g L-1 retentate biomass (BR ) can effectively remove 82%-100% dye at 20 and 100 mg L-1 initial dye concentration. Results also indicated that with increase in initial reactive dye concentration from 20 to 100 mg L-1 , the decolorization capacity of retentate biomass (BR ) (at 0.2 g L-1 ) decreased from 79.2% to 32.3%. However, the use of AgNPs synthesized leftover fungal biomass can be a good option for up taking the additional dyes/contaminants, and also as leftover biomass can be utilized effectively, it can prove to be an excellent approach for environment safety. As the literature studies did not mentioned the further use of retentate biomass, the present study provides an excellent approach for further research on this aspect. PRACTITIONER POINTS: Synthesis of AgNPs from Aspergillus spp. and characterized with the help of a U.V-vis spectrophotometer, a zeta potential, DLS and TEM. The developed AgNPs were used for antibacterial and dye degradation activity. The left over (retentate) fungal biomass was used further for additional dye degradation activity.


Assuntos
Anti-Infecciosos , Nanopartículas Metálicas , Antibacterianos/farmacologia , Biomassa , Corantes , Escherichia coli , Fungos , Prata , Staphylococcus aureus
19.
Biomed Res Int ; 2021: 6669742, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34458370

RESUMO

Intestinal parasites are responsible for one of the major health problems like food contamination with socioeconomic effects in the world with a prevalence rate of 30-60%, in developing countries that lie within tropical and subtropical areas. They pose a reasonable public health burden, particularly in low- and middle-income countries, including Ethiopia. Globally, due to intestinal parasitic infections, around 3.5 billion people are affected and more than 200,000 deaths are reported annually. Around 50000 deaths yearly are caused by intestinal parasites in Ethiopia. As such, intestinal parasites perceived global and local burdens to various countries. The risk of food contamination depends largely on the health status of the food handlers, their hygiene, knowledge, and practice of food hygiene. Food handlers with poor personal hygiene and sanitation conditions are the major potential sources of intestinal helminthes and protozoa worldwide. The proposed study was aimed at evaluating prevalence of intestinal parasitic infections and their associated factors among food handlers working in selected catering establishments. A cross-sectional study was conducted in Bule Hora Town from March to April 2020. A total of 136 catering establishments were selected using a systematic sampling technique. Data analysis was done using SPSS version 20. The prevalence of intestinal parasites in this study was 46.3%. Entamoeba histolytica was the most predominant parasite (33.3%, i.e., 21/63) while Giardia lamblia was the least (11.1%, i.e., 7/63). Consumption of vended or borehole water and hygienic practices such as hand washing before eating, after using toilet, before cooking and trimming of finger nail and wearing proper working clothes and shoes were statistically significant with intestinal parasitic infection (P < 0.05). Generally, the prevalence of intestinal parasitic infection in this study was high and contributed by low socioeconomic status and poor environmental and personal hygiene. Measures including education on personal hygiene, environmental sanitation, drinking water supply, regular medical checkups, and treatment should be taken into account to reduce the prevalence of intestinal parasites.


Assuntos
Manipulação de Alimentos/métodos , Desinfecção das Mãos/métodos , Enteropatias Parasitárias/epidemiologia , Doenças Profissionais/epidemiologia , Doenças Profissionais/parasitologia , Adolescente , Adulto , Animais , Estudos Transversais , Entamoeba histolytica/isolamento & purificação , Entamebíase/complicações , Entamebíase/parasitologia , Etiópia/epidemiologia , Fezes/parasitologia , Feminino , Giardia lamblia/isolamento & purificação , Giardíase/complicações , Giardíase/parasitologia , Humanos , Higiene , Enteropatias Parasitárias/diagnóstico , Enteropatias Parasitárias/economia , Enteropatias Parasitárias/parasitologia , Masculino , Doenças Profissionais/diagnóstico , Doenças Profissionais/economia , Exposição Ocupacional , Prevalência , Fatores de Risco , Fatores Socioeconômicos , Adulto Jovem
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...