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1.
BMC Res Notes ; 17(1): 146, 2024 May 22.
Artigo em Inglês | MEDLINE | ID: mdl-38778408

RESUMO

OBJECTIVE: Diabetes mellitus predisposes patients to increased incidence and severe forms of periodontal disease. Currently, information on the bacterial diversity of patients with diabetes mellitus and periodontitis in Uganda is scanty. This study set out to describe the bacteria associated with periodontitis in patients with diabetes mellitus in Uganda, as part of a larger study describing the association between periodontal disease and diabetes mellitus. RESULTS: This was a case control involving 45 samples of gingival crevicular fluid collected from participants with periodontitis, the cases being 26 participants with diabetes mellitus and controls 19 participants without diabetes mellitus. Sequencing using the 16s Oxford nanopore long read protocol was followed by a bioinformatics analysis pipeline for alpha and beta diversity indices in the two groups. Multivariate tests were done to determine the differences in the bacterial composition in the two groups. Of the 739 Operational Taxonomic Units and 500 phyla identified, 37.9% (280/739) were from participants with diabetes mellitus. Analysis of beta diversity revealed a dissimilarity between the two study groups (CAP score = 0) with a significant association noted between periodontitis and the subgingival bacteria (P = 0.001). Diabetes mellitus reduced the quantity and altered the composition of the subgingival microbiome in the study participants.


Assuntos
Periodontite , Humanos , Uganda/epidemiologia , Estudos de Casos e Controles , Masculino , Adulto , Feminino , Pessoa de Meia-Idade , Periodontite/microbiologia , Microbiota/genética , Líquido do Sulco Gengival/microbiologia , Diabetes Mellitus/microbiologia , Bolsa Periodontal/microbiologia , Bactérias/isolamento & purificação , Bactérias/classificação , Bactérias/genética , RNA Ribossômico 16S/genética
2.
BMC Infect Dis ; 24(1): 511, 2024 May 22.
Artigo em Inglês | MEDLINE | ID: mdl-38773443

RESUMO

INTRODUCTION: This study aimed to analyze the risk factors associated with isoniazid-resistant and rifampicin-susceptible tuberculosis (Hr-TB) in adults. METHOD: The clinical data of 1,844 adult inpatients diagnosed with culture-positive pulmonary tuberculosis (PTB) in Nanjing Second Hospital from January 2019 and December 2021 were collected. All culture positive strain from the patient specimens underwent drug susceptibility testing (DST). Among them, 166 patients with Hr-TB were categorized as the Hr-TB group, while the remaining 1,678 patients were classified as having drug-susceptible tuberculosis (DS-TB). Hierarchical logistic regression was employed for multivariate analysis to identify variables associated with Hr-TB. RESULTS: Multivariate logistic regression analysis revealed that individuals with diabetes mellitus (DM) (OR 1.472, 95% CI 1.037-2.088, p = 0.030) and a history of previous tuberculosis treatment (OR 2.913, 95% CI 1.971-4.306, p = 0.000) were at higher risk of developing adult Hr-TB, with this risk being more pronounced in male patients. Within the cohort, 1,640 patients were newly treated, and among them, DM (OR 1.662, 95% CI 1.123-2.461, p = 0.011) was identified as risk factors for Hr-TB. CONCLUSIONS: Diabetes mellitus is a risk factor for Hr-TB in adults, and the contribution of diabetes as a risk factor was more pronounced in the newly treatment or male subgroup. And previous TB treatment history is also a risk factor for Hr-TB in adults.


Assuntos
Antituberculosos , Isoniazida , Mycobacterium tuberculosis , Rifampina , Tuberculose Pulmonar , Humanos , Masculino , Feminino , Fatores de Risco , Isoniazida/uso terapêutico , Isoniazida/farmacologia , Rifampina/uso terapêutico , Rifampina/farmacologia , Pessoa de Meia-Idade , Adulto , China/epidemiologia , Antituberculosos/uso terapêutico , Antituberculosos/farmacologia , Mycobacterium tuberculosis/efeitos dos fármacos , Mycobacterium tuberculosis/isolamento & purificação , Tuberculose Pulmonar/epidemiologia , Tuberculose Pulmonar/tratamento farmacológico , Tuberculose Pulmonar/microbiologia , Tuberculose Resistente a Múltiplos Medicamentos/epidemiologia , Tuberculose Resistente a Múltiplos Medicamentos/tratamento farmacológico , Tuberculose Resistente a Múltiplos Medicamentos/microbiologia , Testes de Sensibilidade Microbiana , Idoso , Adulto Jovem , Estudos Retrospectivos , Diabetes Mellitus/epidemiologia , Diabetes Mellitus/microbiologia
3.
Front Cell Infect Microbiol ; 14: 1370999, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38660489

RESUMO

Diabetes mellitus (DM) refers to a group of chronic diseases with global prevalence, characterized by persistent hyperglycemia resulting from various etiologies. DM can harm various organ systems and lead to acute or chronic complications, which severely endanger human well-being. Traditional treatment mainly involves controlling blood sugar levels through replacement therapy with drugs and insulin; however, some patients still find a satisfactory curative effect difficult to achieve. Extensive research has demonstrated a close correlation between enteric dysbacteriosis and the pathogenesis of various types of DM, paving the way for novel therapeutic approaches targeting the gut microbiota to manage DM. Fecal microbiota transplantation (FMT), a method for re-establishing the intestinal microbiome balance, offers new possibilities for treating diabetes. This article provides a comprehensive review of the correlation between DM and the gut microbiota, as well as the current advancements in FMT treatment for DM, using FMT as an illustrative example. This study aims to offer novel perspectives and establish a theoretical foundation for the clinical diagnosis and management of DM.


Assuntos
Diabetes Mellitus , Transplante de Microbiota Fecal , Microbioma Gastrointestinal , Transplante de Microbiota Fecal/métodos , Humanos , Diabetes Mellitus/terapia , Diabetes Mellitus/microbiologia , Disbiose/terapia , Animais , Fezes/microbiologia
4.
Yi Chuan ; 45(11): 1052-1061, 2023 Nov 20.
Artigo em Inglês | MEDLINE | ID: mdl-38764270

RESUMO

Invasive infection caused by hypervirulent Klebsiella pneumoniae (HvKP) has been reported worldwide. Most of the patients are community population, related to diabetes mellitus (DM), chronic liver disease and other basic diseases, which prone to systemic migratory infection. In this study, we collected 377 patients with community acquired Klebsiella pneumoniae liver abscess in our hospital from January 2013 to December 2018, 65.8% of whom were male, and 49.6% had DM. Patients with DM are prone to eye and central nervous system (CNS) infection, which need continuous local abscess drainage during treatment. Among them, patients with poor blood glucose control have a higher rate of blood stream infections (BSI). 219 strains of HvKP were obtained, with K1/K2 Serotype accounted for 81.7%. The incidence of BSI in K2 patients was higher than that in K1 patients. The PCR results indicate that the carrying rate of virulence genes (rmpA、areo、kfu、allS、iroN、magA、uge、wcaG) in K1/K2 type strains is significantly higher than that in non K1/K2 type strains. ST23 and ST65 are the most common multilocus sequence typing (MLST), which belong to K1 and K2 Serotype respectively. All of HvKP strains showed high sensitivity to commonly used clinical antibiotics other than ampicillin, with 54.3% of the strains exhibiting high viscosity characteristics. Meanwhile, 35 classic Klebsiella pneumoniae (cKP) strains were collected, and their serum typing is mainly non K1/K2. The carrying rate of virulence genes and viscosity degree in HvKP are significantly higher than those in cKP. Primary liver abscess caused by HvKP is prone to multiple tissue and organ infections, but it shows higher sensitivity to most commonly used antibiotics in clinical practice except for ampicillin. After effective treatment, the overall prognosis of patients is better. This study analyzes the pathogenic characteristics of HvKP and elaborates on the clinical characteristics of patients, which can provide reference for clinical and scientific research work.


Assuntos
Infecções Comunitárias Adquiridas , Infecções por Klebsiella , Klebsiella pneumoniae , Abscesso Hepático , Humanos , Klebsiella pneumoniae/patogenicidade , Klebsiella pneumoniae/genética , Klebsiella pneumoniae/isolamento & purificação , Masculino , Infecções por Klebsiella/microbiologia , Infecções por Klebsiella/epidemiologia , Feminino , Pessoa de Meia-Idade , Abscesso Hepático/microbiologia , Infecções Comunitárias Adquiridas/microbiologia , Infecções Comunitárias Adquiridas/epidemiologia , Idoso , Virulência , Antibacterianos/uso terapêutico , Antibacterianos/farmacologia , Adulto , Diabetes Mellitus/microbiologia , Tipagem de Sequências Multilocus , Complicações do Diabetes/microbiologia , Fatores de Virulência/genética , Testes de Sensibilidade Microbiana
5.
Front Immunol ; 13: 934695, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35874661

RESUMO

Akkermansia muciniphila is a Gram-negative anaerobic mucus-layer-degrading bacterium that colonizes the intestinal mucosa of humans and rodents. Metagenomic data have shown an inverse correlation between the abundance of A. muciniphila and diseases such as inflammatory bowel disease (IBD), obesity, and diabetes. Thus, in recent decades, the potential of this bacterium as an immunomodulatory probiotic for autoimmune and chronic inflammatory diseases has been explored in experimental models. Corroborating these human correlation data, it has been reported that A. muciniphila slows down the development and progression of diabetes, obesity, and IBD in mice. Consequently, clinical studies with obese and diabetic patients are being performed, and the preliminary results are very promising. Therefore, this mini review highlights the main findings regarding the beneficial roles of A. muciniphila and its action mechanisms in autoimmune and chronic inflammatory diseases.


Assuntos
Akkermansia , Diabetes Mellitus , Doenças Inflamatórias Intestinais , Obesidade , Animais , Doença Crônica , Diabetes Mellitus/microbiologia , Microbioma Gastrointestinal , Humanos , Sistema Imunitário , Doenças Inflamatórias Intestinais/microbiologia , Camundongos , Obesidade/microbiologia
6.
Medicina (Kaunas) ; 58(2)2022 Feb 11.
Artigo em Inglês | MEDLINE | ID: mdl-35208593

RESUMO

Background and Objectives: Proteus and Providencia are related genera of opportunistic pathogens belonging to the Morganellaceae family, often a cause of infections in the immunocompromised hosts, such as diabetic patients. Their clinical significance has increased due to their intrinsic resistance to polymyxins, which is often associated with acquired resistance mechanisms. In this study we evaluated the infections caused by Proteus mirabilis and Providencia stuartii in two groups of patients, with diabetes (group 1) and without diabetes (group 2) admitted to the intensive care unit and surgical wards. The infections were investigated in terms of infection type, risk factors, clinical course, predictive factors for unfavourable outcomes and antibiotic resistance profile. Materials and Methods: An observational, retrospective, cross-sectional study was conducted, comprising all patients infected with these pathogens. Bacterial identification and antibiotic sensitivity testing were performed using the Vitek2C automated system. Results: Comparison of the two groups showed that the statistically significant common infectious risk factors were found less frequently among diabetic patients when compared with non-diabetic patients, and that antimicrobial resistance was significantly lower in the diabetic patient group. However, survival rates did not differ between the two groups, drawing attention to the implications of diabetes as comorbidity. Additionally, with regard to the antibiotic resistance profile, 38.89% of P. stuartii strains isolated from diabetic patients belonged to the difficult-to-treat (DTR) phenotype, contributing to the severity of these infections compared with those caused by P. mirabilis, of which 32% were wild type strains and 0% were DTR phenotype. The DTR/extended spectrum beta-lactamase producing P. stuartii isolates more than doubled the risk of mortality, while the presence of nasogastric nutrition tripled the risk. Conclusions: P. stuartii infections that occurred in diabetic patients proved to be more difficult to treat, the majority of them being healthcare-associated bacteremias.


Assuntos
Diabetes Mellitus , Infecções por Enterobacteriaceae/complicações , Infecções por Proteus/epidemiologia , Estudos Transversais , Diabetes Mellitus/microbiologia , Humanos , Proteus mirabilis , Providencia , Estudos Retrospectivos
7.
Int J Mol Sci ; 23(4)2022 Feb 21.
Artigo em Inglês | MEDLINE | ID: mdl-35216488

RESUMO

Diabetic foot ulcers (DFU) are a growing concern worldwide as they pose complications in routine clinical practices such as diagnosis and management. Bacterial interactions on the skin surface are vital to the pathophysiology of DFU and may control delayed wound healing. The microbiota from our skin directly regulates cutaneous health and disease by interacting with the numerous cells involved in the wound healing mechanism. Commensal microbiota, in particular, interact with wound-repairing skin cells to enhance barrier regeneration. The observed microbes in DFU include Staphylococcus, Streptococcus, Corynebacterium, Pseudomonas, and several anaerobes. Skin commensal microbes, namely S. epidermidis, can regulate the gamma delta T cells and induce Perforin-2 expression. The increased expression of Perforin-2 by skin cells destroyed S. aureus within the cells, facilitating wound healing. Possible crosstalk between the human commensal microbiome and different cell types involved in cutaneous wound healing promotes the immune response and helps to maintain the barrier function in humans. Wound healing is a highly well-coordinated, complex mechanism; it can be devastating if interrupted. Skin microbiomes are being studied in relation to the gut-skin axis along with their effects on dermatologic conditions. The gut-skin axis illustrates the connection wherein the gut can impact skin health due to its immunological and metabolic properties. The precise mechanism underlying gut-skin microbial interactions is still unidentified, but the immune and endocrine systems are likely to be involved. Next-generation sequencing and the development of bioinformatics pipelines may considerably improve the understanding of the microbiome-skin axis involved in diabetic wound healing in a much more sophisticated way. We endeavor to shed light on the importance of these pathways in the pathomechanisms of the most prevalent inflammatory conditions including the diabetes wound healing, as well as how probiotics may intervene in the gut-skin axis.


Assuntos
Diabetes Mellitus/microbiologia , Microbioma Gastrointestinal/fisiologia , Microbiota/fisiologia , Pele/microbiologia , Cicatrização/fisiologia , Animais , Humanos
8.
Int J Mol Sci ; 23(2)2022 Jan 06.
Artigo em Inglês | MEDLINE | ID: mdl-35054790

RESUMO

Intestinal homeostasis is a dynamic balance involving the interaction between the host intestinal mucosa, immune barrier, intestinal microecology, nutrients, and metabolites. Once homeostasis is out of balance, it will increase the risk of intestinal diseases and is also closely associated with some systemic diseases. Probiotics (Escherichia coli Nissle 1917, Akkermansia muciniphila, Clostridium butyricum, lactic acid bacteria and Bifidobacterium spp.), maintaining the gut homeostasis through direct interaction with the intestine, can also exist as a specific agent to prevent, alleviate, or cure intestinal-related diseases. With genetic engineering technology advancing, probiotics can also show targeted therapeutic properties. The aims of this review are to summarize the roles of potential native and engineered probiotics in oncology, inflammatory bowel disease, and obesity, discussing the therapeutic applications of these probiotics.


Assuntos
Diabetes Mellitus/microbiologia , Enteropatias/microbiologia , Mucosa Intestinal/fisiologia , Obesidade/microbiologia , Probióticos/uso terapêutico , Akkermansia , Animais , Bifidobacterium , Clostridium butyricum , Diabetes Mellitus/terapia , Escherichia coli , Homeostase , Humanos , Doenças Inflamatórias Intestinais/microbiologia , Doenças Inflamatórias Intestinais/terapia , Enteropatias/terapia , Mucosa Intestinal/microbiologia , Lactobacillales , Obesidade/terapia
9.
Biochimie ; 193: 38-63, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34688789

RESUMO

The human digestive tract is the cottage to trillions of live microorganisms, which regulate health and illness. A healthy Gut Microbiota (GM) is necessary for preventing microbial growth, body growth, obesity, cancer, diabetes, and enhancing immunity. The equilibrium in GM's composition and the presence/absence of critical species enable specific responses to be essential for the host's better health condition. Research evidences revealed that the dietary plants and their bioactive phytochemicals (BPs) play an extensive and critical role in shaping the GM to get beneficial health effects. BPs are also known to improve gastrointestinal health and reduce the risk of several diseases by modulating GM-mediated cellular and molecular processes. Regular intake of BPs-rich vegetables, fruits, and herbal preparations promotes probiotic bacteria, including Bifidobacteria and Lactobacillus species, while inhibiting unwanted gut residents' development Escherichia coli, and Salmonella typhimurium etc. Upon consumption, BPs contact the GM that gets transformed before being absorbed from the gastrointestinal tract. Biotransformation of BPs by GM is linked with the enhancement of bioactivity/toxicity diminishment of the BPs compared to parental phytochemicals. Therefore, the current review focuses on the role of BPs in shaping GM for the prevention and treatment of human diseases.


Assuntos
Diabetes Mellitus , Microbioma Gastrointestinal , Trato Gastrointestinal/microbiologia , Neoplasias , Obesidade , Compostos Fitoquímicos/uso terapêutico , Probióticos/uso terapêutico , Diabetes Mellitus/microbiologia , Diabetes Mellitus/prevenção & controle , Humanos , Neoplasias/microbiologia , Neoplasias/prevenção & controle , Obesidade/microbiologia , Obesidade/prevenção & controle , Polifenóis/uso terapêutico
10.
J Clin Endocrinol Metab ; 107(3): e924-e934, 2022 02 17.
Artigo em Inglês | MEDLINE | ID: mdl-34747479

RESUMO

CONTEXT: The interrelationships among the gut microbiome, the Mediterranean diet (MedDiet), and a clinical endpoint of diabetes is unknown. OBJECTIVE: To identify gut microbial features of a MedDiet and examine whether the association between MedDiet and diabetes varies across individuals with different gut microbial profiles. METHODS: This study included 543 diabetic, 805 prediabetic, and 394 normoglycemic participants from a cohort study of USA Hispanic/Latino men and women. Fecal samples were profiled using 16S rRNA gene sequencing. Adherence to MedDiet was evaluated by an index based on 2 24-hour dietary recalls. RESULTS: A greater MedDiet adherence was associated with higher abundances of major dietary fiber metabolizers (e.g., Faecalibacterium prausnitzii, false-discovery-rate-adjusted P [q] = 0.01), and lower abundances of biochemical specialists (e.g., Parabacteroides, q = 0.04). The gut microbiomes of participants with greater MedDiet adherence were enriched for functions involved in dietary fiber degradation but depleted for those related to sulfur reduction and lactose and galactose degradation. The associations between MedDiet adherence and diabetes prevalence were significantly stronger among participants with depleted abundance of Prevotella (pinteraction = 0.03 for diabetes, 0.02 for prediabetes/diabetes, and 0.02 for prediabetes). A 1-SD deviation increment in the MedDiet index was associated with 24% (odds ratio [OR] 0.76; 95% CI, 0.59-0.98) and 7% (OR 0.93; 95% CI, 0.72-1.20) lower odds of diabetes in Prevotella noncarriers and carriers, respectively. CONCLUSION: Adherence to MedDiet is associated with diverse gut microorganisms and microbial functions. The inverse association between the MedDiet and diabetes prevalence varies significantly depending on gut microbial composition.


Assuntos
Diabetes Mellitus/epidemiologia , Dieta Mediterrânea , Microbioma Gastrointestinal , Hispânico ou Latino/estatística & dados numéricos , Estado Pré-Diabético/epidemiologia , Adolescente , Adulto , Idoso , Diabetes Mellitus/diagnóstico , Diabetes Mellitus/microbiologia , Diabetes Mellitus/prevenção & controle , Registros de Dieta , Fezes , Feminino , Teste de Tolerância a Glucose , Humanos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Estado Pré-Diabético/microbiologia , Estado Pré-Diabético/prevenção & controle , Prevalência , Estudos Prospectivos , Fatores de Proteção , Medição de Risco/estatística & dados numéricos , Estados Unidos/epidemiologia , Adulto Jovem
11.
Bioengineered ; 12(2): 12521-12534, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34927535

RESUMO

The aim of this study was to determine the diversity of intestinal microflora and its correlation with clinical parameters in diabetic patients and healthy subjects and to assess the importance of intestinal flora in patients with diabetes. Forty-four patients with diabetes were included. The control group included 47 healthy people. Their data, biochemical indicators and results from 16S rRNA sequencing of their fecal samples were collected. Compared with the healthy population, the intestinal flora of the diabetic patients was obviously abnormal. Within the diabetes group, the abundances of the genera Faecalibacterium, Prevotella, and Roseburia were higher, and the abundances of the genera Shigella and Bifidobacterium were lower. In the correlation analysis between bacteria and clinical indicators, it was found that the genera Veillonella and unclassified_Enterobacteriaceae were negatively related to blood glucose, while the genera Phascolarctobacterium, unidentified_Bacteroidales and Prevotella were significantly positively correlated with fasting blood glucose. Twelve microbial markers were detected in the random forest model, and the area under the curve (AUC) was 84.1%. This index was greater than the diagnostic effect of fasting blood glucose. This was also supported by the joint diagnostic model of microorganisms and clinical indicators. In addition, the intestinal flora significantly improved the diagnosis of diabetes. In conclusion, it can be concluded from these results that intestinal flora is essential for the occurrence and development of diabetes, which seems to be as important as blood glucose itself.Abbreviations: PCoA: principal coordinate analysis; NMDS: non econometric multidimensional scaling analysis; LEfSe: linear discriminant analysis effect size; LDA: linear discriminant analysis; POD: probability of disease; BMI: body mass index; DCA: decision curve analysis.


Assuntos
Diabetes Mellitus/diagnóstico , Diabetes Mellitus/microbiologia , Microbioma Gastrointestinal/fisiologia , Bactérias/genética , Fezes/microbiologia , Feminino , Microbioma Gastrointestinal/genética , Humanos , Masculino , Pessoa de Meia-Idade , RNA Ribossômico 16S/genética
12.
J Med Microbiol ; 70(10)2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34623232

RESUMO

Alteration in the composition of the gut microbiota can lead to a number of chronic clinical diseases. Akkermansia muciniphila is an anaerobic bacteria constituting 3-5% of the gut microbial community in healthy adults. This bacterium is responsible for degenerating mucin in the gut; its scarcity leads to diverse clinical disorders. In this review, we focus on the role of A. muciniphila in diabetes, obesity and atherosclerosis, as well as the use of this bacterium as a next-generation probiotic. In regard to obesity and diabetes, human and animal trials have shown that A. muciniphila controls the essential regulatory system of glucose and energy metabolism. However, the underlying mechanisms by which A. muciniphila alleviates the complications of obesity, diabetes and atherosclerosis are unclear. At the same time, its abundance suggests improved metabolic disorders, such as metabolic endotoxemia, adiposity insulin resistance and glucose tolerance. The role of A. muciniphila is implicated in declining aortic lesions and atherosclerosis. Well-characterized virulence factors, antigens and cell wall extracts of A. muciniphila may act as effector molecules in these diseases. These molecules may provide novel mechanisms and strategies by which this bacterium could be used as a probiotic for the treatment of obesity, diabetes and atherosclerosis.


Assuntos
Aterosclerose/microbiologia , Diabetes Mellitus/microbiologia , Obesidade/microbiologia , Probióticos , Akkermansia/fisiologia , Animais , Aterosclerose/tratamento farmacológico , Aterosclerose/metabolismo , Diabetes Mellitus/tratamento farmacológico , Diabetes Mellitus/metabolismo , Metabolismo Energético , Microbioma Gastrointestinal , Humanos , Obesidade/tratamento farmacológico , Obesidade/metabolismo , Probióticos/uso terapêutico
13.
PLoS One ; 16(9): e0257004, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34534230

RESUMO

AIM: To investigate the epidemiology of S. aureus and MRSA nasal carriage among people with diabetes at the Korle Bu Teaching Hospital in Accra, including the prevalence, predictors of carriage, and antibiotic resistance. METHODOLOGY: This study was cross-sectional, involving 300 diabetes patients and 106 non-diabetic individuals. Swab specimens of the nares were obtained from the participants and bacteriologically-cultured. Identification and characterization of S. aureus and MRSA were based on standard bacteriological methods; antimicrobial susceptibility testing was by the Kirby-Bauer method. RESULTS: The prevalence of staphylococcal carriage, the diabetes group relative to the non-diabetes group, were 31.0% and 10.4% (S. aureus), and 3.3% and 0.0% (MRSA). Presence of diabetes predisposed to S. aureus carriage, but not MRSA nor coagulase-negative staphylococci (CoNS) carriage (OR = 3.88; p < 0.0001). Colonization with CoNS was protective of S. aureus (OR = 0.039, p < 0.001) and MRSA (OR = 0.115, p = 0.043) colonization among the diabetics. The antimicrobial resistance patterns recorded among the S. aureus isolated from the diabetic individuals relative to the non-diabetics were as follows: penicillin (95% vs. 91%), tetracycline (37% vs. 27%), cotrimoxazole (30% vs. 36%), erythromycin (17% vs. 0%), norfloxacin (13% vs. 0%), clindamycin (12% vs. 0%), gentamicin (9% vs. 0%), fusidic acid (10% vs. 9%), linezolid (4% vs. 0%), and rifampicin (5% vs. 0%). The proportion of multidrug resistant S. aureus was 41% (n = 38) in the diabetes group and 0% in the non-diabetes group; this difference was statistically significant (p = 0.01). CONCLUSIONS: The presence of diabetes predisposed the participants to S. aureus carriage by almost four folds, but not MRSA carriage. Colonization with CoNS was protective of S. aureus and MRSA carriage in the diabetes group. Finally, linezolid remains a good therapeutic agent for anti-MRSA therapy.


Assuntos
Complicações do Diabetes/microbiologia , Diabetes Mellitus/microbiologia , Farmacorresistência Bacteriana Múltipla , Staphylococcus aureus Resistente à Meticilina/efeitos dos fármacos , Infecções Estafilocócicas/microbiologia , Adolescente , Adulto , Antibacterianos/uso terapêutico , Portador Sadio , Clindamicina/uso terapêutico , Estudos Transversais , Complicações do Diabetes/diagnóstico , Complicações do Diabetes/tratamento farmacológico , Diabetes Mellitus/diagnóstico , Diabetes Mellitus/tratamento farmacológico , Eritromicina/uso terapêutico , Feminino , Ácido Fusídico/uso terapêutico , Gentamicinas/uso terapêutico , Humanos , Linezolida/uso terapêutico , Masculino , Staphylococcus aureus Resistente à Meticilina/crescimento & desenvolvimento , Testes de Sensibilidade Microbiana , Pessoa de Meia-Idade , Cavidade Nasal/microbiologia , Norfloxacino/uso terapêutico , Penicilinas/uso terapêutico , Rifampina/uso terapêutico , Infecções Estafilocócicas/diagnóstico , Infecções Estafilocócicas/tratamento farmacológico , Tetraciclina/uso terapêutico , Combinação Trimetoprima e Sulfametoxazol/uso terapêutico
14.
Angew Chem Int Ed Engl ; 60(44): 23534-23539, 2021 10 25.
Artigo em Inglês | MEDLINE | ID: mdl-34378279

RESUMO

The peroxidase-like activity of nanozymes is promising for chemodynamic therapy by catalyzing H2 O2 into . OH. However, for most nanozymes, this activity is optimal just in acidic solutions, while the pH of most physiological systems is beyond 7.0 (even >8.0 in chronic wounds) with inadequate H2 O2 . We herein communicate an activatable nanozyme with targeting capability to simultaneously break the local pH and H2 O2 limitations under physiological conditions. As a proof of concept, aptamer-functionalized nanozymes, glucose oxidase, and hyaluronic acid constitute an activatable nanocapsule "APGH", which can be activated by bacteria-secreted hyaluronidase in infected wounds. Nanozymes bind onto bacteria through aptamer recognition, and glucose oxidation tunes the local pH down and supplements H2 O2 for the in-situ generation of . OH on bacteria surfaces. The activity switching and enhanced antibacterial effect of the nanocapsule were verified in vitro and in diabetic wounds. This strategy for directly regulating local microenvironment is generally accessible for nanozymes, and significant for facilitating biological applications of nanozymes.


Assuntos
Antibacterianos/metabolismo , Diabetes Mellitus/metabolismo , Glucose Oxidase/metabolismo , Glucose/metabolismo , Peróxido de Hidrogênio/metabolismo , Infecções Estafilocócicas/metabolismo , Animais , Antibacterianos/uso terapêutico , Diabetes Mellitus/tratamento farmacológico , Diabetes Mellitus/microbiologia , Peróxido de Hidrogênio/química , Concentração de Íons de Hidrogênio , Radical Hidroxila/química , Radical Hidroxila/metabolismo , Camundongos , Infecções Estafilocócicas/tratamento farmacológico
16.
BMJ Case Rep ; 14(7)2021 Jul 29.
Artigo em Inglês | MEDLINE | ID: mdl-34326123

RESUMO

A wide range of bacterial and fungal coinfections may be associated with COVID-19. We report a case of rhino-orbital mucormycosis in a patient with COVID-19. A 67-year-old man, known case of diabetes, hypertension and ischaemic heart disease, was being treated for COVID-19 pneumonia when he developed right cheek eschar and ophthalmoplegia. Imaging studies revealed pansinusitis of bilateral maxillary and sphenoid sinuses with thickening and enhancement of right-sided soft tissue, lacrimal gland, mastication muscles, temporal lobe infiltrate and cerebellum infarct. Emergency right face debridement, right eye exenteration and bilateral functional endoscopic sinus surgery were done. Histopathological examination confirmed mucormycosis diagnosis. He was given amphotericin B and broad-spectrum antibiotics. It is important to have high index of suspicion for fungal coinfections in patients with COVID-19 with pre-existing medical conditions. There is a need to emphasise judicious and evidence-based use of immunomodulators in patients with COVID-19 to avoid triggering and flaring up of fungal infections.


Assuntos
COVID-19 , Diabetes Mellitus , Infecções Oculares Fúngicas , Mucormicose , Doenças Orbitárias , Idoso , Antifúngicos/uso terapêutico , Diabetes Mellitus/microbiologia , Infecções Oculares Fúngicas/tratamento farmacológico , Humanos , Masculino , Mucormicose/complicações , Mucormicose/diagnóstico , Mucormicose/tratamento farmacológico , Doenças Orbitárias/tratamento farmacológico
17.
Nutrients ; 13(5)2021 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-34066662

RESUMO

The prevalence of diabetes is on the increase worldwide, being one of the fastest growing international health emergencies in the 21st century [...].


Assuntos
Diabetes Mellitus/dietoterapia , Dieta para Diabéticos/tendências , Microbioma Gastrointestinal/fisiologia , Controle Glicêmico/tendências , Estado Nutricional , Diabetes Mellitus/microbiologia , Diabetes Mellitus/fisiopatologia , Disbiose/etiologia , Humanos , Inflamação
18.
Biomed Res Int ; 2021: 9982744, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34136578

RESUMO

INTRODUCTION: In the recent decade, the increased immunocompromised population such as diabetic patients makes a high incidence of invasive Candida infections. Diabetes mellitus is the most common endocrine metabolic disorder, and diabetic patients are more susceptible to oral candidiasis infection. Candidiasis is an opportunistic fungal infection caused by many species of Candida. Secretion of exoenzymes plays an important role in the virulence and pathogenesis of Candida species. The aim of this study was to evaluate the potential role of phospholipase, esterase, and hemolytic activity of Candida species isolated from oral cavity lesions of diabetic patients. METHODS: A total of 108 Candida species including 75 Candida albicans and 33 non-Candida albicans species were recovered from the oral cavity of diabetic patients included in our study. Egg yolk agar, Tween 80 opacity medium, and blood agar plate assays were used for determining phospholipase, esterase, and hemolytic activities, respectively. RESULTS: Candida albicans species had the most exoenzyme activity in comparison to non-albicans isolates. Candida albicans isolates showed 97.3%, 100%, and 77.3% phospholipase, hemolysin, and esterase activities, respectively. The difference between Candida albicans and non-Candida albicans was significant in phospholipase (P < 0.001) and hemolytic activity (P = 0.027), but not significant in esterase activity (P = 0.076). CONCLUSION: This study showed that most of the isolates had different enzymatic patterns, and Candida albicans isolates had the most exoenzyme activity. So due to the potential effects of these enzymes in pathogenesis and virulence effects of Candida species, we can conclude that the severity of extracellular enzymes may play a role in the severity of signs and symptoms of Candida oral cavity infections in diabetic patients.


Assuntos
Candida albicans , Diabetes Mellitus/microbiologia , Diabetes Mellitus/fisiopatologia , Boca/microbiologia , Ágar , Candidíase Bucal/complicações , Candidíase Bucal/microbiologia , Complicações do Diabetes , Gema de Ovo , Proteínas Hemolisinas , Hemólise , Humanos , Mucosa Bucal/microbiologia , Fosfolipases/química , Polissorbatos , Fatores de Risco , Especificidade da Espécie , Virulência , Fatores de Virulência
19.
Sci Rep ; 11(1): 9464, 2021 05 04.
Artigo em Inglês | MEDLINE | ID: mdl-33947878

RESUMO

Diabetes increases the risk of bacterial infections. We investigated whether common genetic variants associate with infection susceptibility in Finnish diabetic individuals. We performed genome-wide association studies and pathway analysis for bacterial infection frequency in Finnish adult diabetic individuals (FinnDiane Study; N = 5092, Diabetes Registry Vaasa; N = 4247) using national register data on antibiotic prescription purchases. Replication analyses were performed in a Swedish diabetic population (ANDIS; N = 9602) and in a Finnish non-diabetic population (FinnGen; N = 159,166). Genome-wide data indicated moderate but significant narrow-sense heritability for infection susceptibility (h2 = 16%, P = 0.02). Variants on chromosome 2 were associated with reduced infection susceptibility (rs62192851, P = 2.23 × 10-7). Homozygotic carriers of the rs62192851 effect allele (N = 44) had a 37% lower median annual antibiotic purchase rate, compared to homozygotic carriers of the reference allele (N = 4231): 0.38 [IQR 0.22-0.90] and 0.60 [0.30-1.20] respectively, P = 0.01). Variants rs6727834 and rs10188087, in linkage disequilibrium with rs62192851, replicated in the FinnGen-cohort (P < 0.05), but no variants replicated in the ANDIS-cohort. Pathway analysis suggested the IRAK1 mediated NF-κB activation through IKK complex recruitment-pathway to be a mediator of the phenotype. Common genetic variants on chromosome 2 may associate with reduced risk of bacterial infections in Finnish individuals with diabetes.


Assuntos
Infecções Bacterianas/genética , Diabetes Mellitus/genética , Diabetes Mellitus/microbiologia , Predisposição Genética para Doença/genética , Polimorfismo de Nucleotídeo Único/genética , Adulto , Idoso , Feminino , Finlândia , Estudo de Associação Genômica Ampla/métodos , Genótipo , Humanos , Desequilíbrio de Ligação/genética , Masculino , Pessoa de Meia-Idade , Fenótipo
20.
Sci Rep ; 11(1): 8593, 2021 04 21.
Artigo em Inglês | MEDLINE | ID: mdl-33883616

RESUMO

Psoriasis and non-alcoholic fatty liver disease (NAFLD) are both inflammatory diseases. The study objective was to estimate the risk of NAFLD, non-alcoholic steatohepatitis, and liver fibrosis (by liver stiffness and liver biopsy) in patients with psoriasis and to determine the epidemiological, clinical, immunological (TNF-α, IL-2, IL-6, IL-12, IL-17, IL-23, and TGF-ß) characteristics, and bacterial translocation. Of the 215 psoriatic patients included, 91 presented NAFLD (prevalence: 42.3%). Compared to patients with psoriasis alone, those with NAFLD were significantly more likely to have metabolic syndrome, diabetes, dyslipidemia, body mass index ≥ 30 kg/m2, homeostatic model assessment of insulin resistance ≥ 2.15, and greater psoriasis area severity index. NAFLD patients also had significantly higher levels of TNF-α (p = 0.002) and TGF-ß (p = 0.007) and a higher prevalence of bacterial translocation (29.7% vs. 13.7%; p = 0.004). Liver stiffness measurement was over 7.8 kPa in 17.2% (15/87) of NAFLD patients; 13 of these underwent liver biopsy, and 5.7% (5/87) had liver fibrosis, while 1.1% (1/87) had advanced fibrosis or non-alcoholic steatohepatitis. In conclusion the prevalence of NAFLD in patients with psoriasis is high and associated with a higher prevalence of metabolic syndrome features, bacterial translocation and a higher pro-inflammatory state. It is worth mentioning that liver fibrosis and non-alcoholic steatohepatitis are not frequent in this population of patients.


Assuntos
Translocação Bacteriana/fisiologia , Inflamação/microbiologia , Inflamação/patologia , Hepatopatia Gordurosa não Alcoólica/microbiologia , Hepatopatia Gordurosa não Alcoólica/patologia , Psoríase/microbiologia , Psoríase/patologia , Adulto , Índice de Massa Corporal , Citocinas/metabolismo , Diabetes Mellitus/metabolismo , Diabetes Mellitus/microbiologia , Diabetes Mellitus/patologia , Feminino , Humanos , Inflamação/metabolismo , Resistência à Insulina/fisiologia , Cirrose Hepática/metabolismo , Cirrose Hepática/microbiologia , Cirrose Hepática/patologia , Masculino , Síndrome Metabólica/metabolismo , Síndrome Metabólica/microbiologia , Síndrome Metabólica/patologia , Pessoa de Meia-Idade , Hepatopatia Gordurosa não Alcoólica/metabolismo , Prevalência , Psoríase/metabolismo , Índice de Gravidade de Doença
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