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1.
Health Sci Rep ; 6(11): e1681, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37927541

RESUMO

Transfusion transmissible infections (TTIs) remain a major health challenge particularly in developing countries. Here, we present a multicentered hospital-based retrospective study on the prevalence, distribution, and risk factors of TTIs in Ghana. Data on blood donors from four health facilities, namely Nkwanta South Municipal Hospital (Oti region), Weija-Gbawe Municipal Hospital (Greater Accra region), SDA Hospital (Northern region) and Wa Municipal Hospital (Upper West region) were extracted and analyzed. Descriptive statistics and multinomial logistic regression were applied to compare sociodemographic data with TTI status. A total of 6094 blood donors were included in this study, and 2% were females. The overall prevalence of TTIs was 21.0% (1232/5868). Specifically, the prevalence of HBV, HCV, HIV, and Syphilis was 6.6% (385/5868), 4.9% (286/5830), 2.9% (168/5867), and 6.8% (393/5739), respectively. Wa dominated in all the viral agents considered in this study, while the Oti region recorded the highest prevalence in T. pallidum. The odds of HBV infection was 3.1 (p = 0.008) among first-time donors, while that for HCV was 2.8 (p = 0.042). For rural dwellers, donors significantly had T. pallidum (p < 0.001; OR = 2.8), HCV (p < 0.001; OR = 2.9), and HIV (p = 0.028; OR = 1.5) infections. Generally, the recipients of transfused blood were predominantly pregnant mothers, followed by children and accident victims. This study has revealed significant disparities and relatively high prevalence of TTIs in Ghana, specifically HBV, HCV, HIV and T. pallidum infections. The variations suggest the presence of unique health challenges per study area, hence the need for a tailored intervention for each study site.

2.
Sci Rep ; 13(1): 13400, 2023 08 17.
Artigo em Inglês | MEDLINE | ID: mdl-37591862

RESUMO

Cerebrospinal meningitis (CSM) is a public health burden in Ghana that causes up to 10% mortality in confirmed cases annually. About 20% of those who survive the infection suffer permanent sequelae. The study sought to understand the predictive signs and symptoms of bacterial meningitis implicated in its outcomes. Retrospective data from the Public Health Division, Ghana Health Service on bacterial meningitis from 2015 to 2019 was used for this study. A pre-tested data extraction form was used to collect patients' information from case-based forms kept at the Disease Control Unit from 2015 to 2019. Data were transcribed from the case-based forms into a pre-designed Microsoft Excel template. The data was cleaned and imported into SPSS version 26 for analysis. Between 2015 and 2019, a total of 2446 suspected bacterial meningitis cases were included in the study. Out of these, 842 (34.4%) were confirmed. Among the confirmed cases, males constituted majority with 55.3% of the cases. Children below 14 years of age were most affected (51.4%). The pathogens commonly responsible for bacterial meningitis were Neisseria meningitidis (43.7%) and Streptococcus pneumoniae (53.0%) with their respective strains Nm W135 (36.7%), Nm X (5.1%), Spn St. 1 (26.2%), and Spn St. 12F/12A/12B/44/4 (5.3%) accounting for more than 70.0% of the confirmed cases. The presence of neck stiffness (AOR = 1.244; C.I 1.026-1.508), convulsion (AOR = 1.338; C.I 1.083-1.652), altered consciousness (AOR = 1.516; C.I 1.225-1.876), and abdominal pains (AOR = 1.404; C.I 1.011-1.949) or any of these signs and symptoms poses a higher risk for testing positive for bacterial meningitis adjusting for age. Patients presenting one and/or more of these signs and symptoms (neck stiffness, convulsion, altered consciousness, and abdominal pain) have a higher risk of testing positive for bacterial meningitis after statistically adjusting for age.


Assuntos
Meningites Bacterianas , Meningite Meningocócica , Criança , Masculino , Humanos , Gana/epidemiologia , Estudos Retrospectivos , Meningites Bacterianas/diagnóstico , Meningites Bacterianas/epidemiologia , Meningite Meningocócica/diagnóstico , Meningite Meningocócica/epidemiologia , Dor Abdominal , Convulsões
3.
Health Sci Rep ; 6(7): e1436, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37484058

RESUMO

Background and Aim: Impaired coagulation and fibrinolysis have been implicated in thromboembolism in human immunodeficiency virus (HIV)-infected individuals. This study evaluated the plasma levels of plasminogen activator inhibitor-1 (PAI-1) and coagulation biomarkers in HIV-infected individuals on highly active antiretroviral therapy (HAART). Methods: This matched case-control study from March to December, 2020 comprised 76 participants: 38 HIV-positive individuals on HAART and 38 apparently healthy HIV-negative individuals as controls. Blood samples were collected for prothrombin time (PT), activated partial thromboplastin time (aPTT), D-dimers, PAI-1, and soluble fibrin monomer complex (SFMC) estimations. The data were analysed using SPSS version 22.0 and statistical significance was set at p < 0.05. Results: Activated partial thromboplastin time was significantly lower in HIV seropositive individuals on HAART compared with HIV seronegative controls (25.90 s vs. 29.0 s, p = 0.030); however, PT, SFMC, D-dimers, and PAI-1 were significantly higher among the HIV-seropositive individuals compared with the controls: PT: (16.29 s ± 2.16 vs. 15.15 s ± 2.60, p = 0.010), SFMC: [8.53 ng/mL (8.03-9.12) vs. 7.84 ng/mL (7.32-8.58), p = 0.005]), D-Dimer: [463.37 ng/mL (402.70-526.33) vs. 421.11 ng/mL (341.11-462.52), p = 0.015], and PAI-1: [12.77 ng/mL (10.63-14.65) vs. 11.27 ng/mL (10.08-12.95), p = 0.039]. PAI-1 showed a moderate positive correlation with D-Dimer (r = 0.659, p < 0.001) and SFMC (r = 0.463, p = 0.003) among HIV-positive individuals on HAART. There was a strong positive correlation between the plasma PAI-1 concentration and the HIV viral load (r = 0.955, p < 0.001). Conclusion: HIV-seropositive individuals on HAART have deranged coagulation and fibrinolytic markers. Higher HIV viral load correlates strongly with elevated plasma levels of PAI-1 antigens. Periodic assessment of markers of coagulation and fibrinolysis be included in the management of HIV/AIDS in Ghana.

4.
Int J Microbiol ; 2023: 3727265, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37303774

RESUMO

Urinary tract infection (UTI) is frequently encountered during pregnancy and is associated with adverse maternal, fetal, and neonatal effects. However, very little information is available on the prevalence of UTI among pregnant women in the northern part of Ghana, a region with a high birth rate. This study employed a cross-sectional analysis of the prevalence, antimicrobial profile, and risk factors associated with UTI in 560 pregnant women attending primary care for antenatal check-ups. Sociodemographic obstetrical history and personal hygiene information were obtained using a well-structured questionnaire. Afterward, clean catch mid-stream urine samples were collected from all participants and subjected to routine microscopy examination and culture. Of 560 pregnant women, 223 cases (39.8%) were positive for UTI. There was a statistically significant association between sociodemographic, obstetric, and personal hygiene variables and UTI (p < 0.0001). Escherichia coli (27.8%) was the commonest bacterial isolate followed by CoNS (13.5%) and Proteus species (12.6%). These isolates exhibited greater resistance to ampicillin (70.1-97.3%) and cotrimoxazole (48.1-89.7%) but were fairly susceptible to gentamycin and ciprofloxacin. Gram-negative resistance to meropenem was up to 25.0%, and Gram positives resistance to cefoxitin and vancomycin was up to 33.3% and 71.4% respectively. The current findings extend our knowledge of the high frequency of UTIs and associated risk factors in pregnant women with E. Coli being the predominant and usual isolate. Variation existed in the resistance pattern of isolates to various drugs, underscoring the need to perform urine culture and susceptibility before treatment.

5.
Can J Infect Dis Med Microbiol ; 2023: 3157202, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37168817

RESUMO

Background: Sexually transmitted blood-borne infections (STBBIs) contribute to negative outcomes of pregnancy. Hepatitis B virus (HBV), hepatitis C virus (HCV), human immunodeficiency virus (HIV), and syphilis infections in pregnancy contribute significantly to maternal and child morbidities and mortalities. This study assessed the prevalence, knowledge, and risk factors of STBBIs (HBV, HCV, HIV, and syphilis) among pregnant women attending antenatal clinics in Jirapa. Methods: A cross-sectional study design involving 246 pregnant women was employed for the study. A structured questionnaire was used to solicit information about the knowledge, prevalence, and risk factors of STBBIs. Results: The overall prevalence of STBBIs was 11.4%; HBV prevalence was 9.8% and 0.8% each for HCV, HIV, and syphilis. About 66% of mothers were aware of mother-to-child transmission of infections during pregnancy. Knowledge of transmission of HIV (93.9%), hepatitis (67.1%), and syphilis (53.7%) in pregnancy was relatively high. Knowledge of risk factors for HIV, hepatitis, and syphilis was 97.6%, 74.4%, and 76.0%, respectively. More than 98% of respondents knew about the prevention of HIV, hepatitis, and syphilis. Significant risk factors associated with and predictive of STBBIs were female genital mutilation (FGM) and gravidity. Conclusion: The occurrence of STBBIs among pregnant women was strongly associated with FGM and gravidity. Public health education should be directed at stopping the practice of FGM and improving reproductive health in the study area.

6.
Health Sci Rep ; 6(1): e1070, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36698703

RESUMO

Background: Neonatal intensive care units (NICU) are specialized units that provide medical attention to neonates, and thus have become a vital aspect in the provision of critical care to infants who are faced with special challenges following birth. Aim: To determine antepartum and intrapartum factors that predispose to NICU admissions in the Nandom Municipal of the Upper West Region of Ghana. Method: This was a cross-sectional retrospective study, spanning from January 1, 2021 to December 31, 2021. Records covering 1777 women who were delivered or had their babies referred to the St. Theresa's Hospital in the Nandom Municipality were involved in the study. Descriptive statistics and multinomial logistic regression analysis were used to compare variables, and statistical significance was determined where the p-value was less than 0.05. Results: From the study, the rate of NICU admission was 10.4%. There was a significant association between mothers who attended less than four antenatal sessions (p = 0.004) and admission to NICU. Nulliparous mothers (p = 0.027) and mothers who presented with multiple pregnancy (p < 0.001) were more likely to have their babies sent to NICU. Both preterm delivery (p < 0.001) and post-term delivery (p < 0.001) were prone to admission to NICU. Also, instrumental delivery (p < 0.001), cesarean section (p < 0.001), low birth weight (p < 0.001), and male infants (p = 0.003) had an increased risk of being admitted to NICU. Furthermore, severe (p < 0.001) and moderate (p < 0.001) birth asphyxia in the first minute following delivery were significantly associated with NICU admission whereas severely asphyxiated babies at 5 min (p < 0.001) were associated with NICU admission. Conclusion: The study revealed a relatively high NICU admission rate in the study area, and the predictors are multifaceted. Tailored intervention programs aimed at curbing these predictors will be required to reduce the rate of NICU admissions in the Nandom Municipality of Ghana.

7.
J Nutr Metab ; 2021: 5581445, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34336275

RESUMO

Essential nutrients are necessary for reducing the risk of maternal mortality, prenatal mortality, and low-birthweight infants. Dietary diversity can play an important role in supplying essential nutrients to both the mother and the foetus. We evaluated nutrition knowledge, attitudes, and dietary diversity of pregnant women. In addition, we investigated the sociodemographic determinants of dietary diversity among pregnant women from a rural district in Ghana. Participants were pregnant women receiving antenatal care from a rural district hospital in Ghana. Dietary diversity was measured using a 24-hour dietary recall questionnaire. Multiple linear regression was used to determine the sociodemographic characteristics of dietary diversity. About 85% of the pregnant women knew that they should eat more in comparison to nonpregnant women, and only 16.9% knew the importance of folic acid supplementation during pregnancy. Mean (SD) dietary diversity score of the participants was 5.27 (1.35), 85.4% did not consume any fruits, and 82.3% did not take milk and milk products. Almost all participants took at least one food item in the starchy staples and green leafy vegetables food groups. Moreover, 53% consumed vitamin A-rich fruits, vegetables, and tubers; 7.7% organ meats; and 30.8% eggs. Those who earned a monthly income of ≥GHC 500 or US$ 87 (B = 1.82; 0.90-2.73; p < 0.001) significantly had higher dietary diversity scores compared to those who earned less. Dietary diversity of the pregnant women was suboptimal. The consumption of vitamin A- and iron-rich foods was inadequate. Income was an important determinant of the dietary diversity of pregnant women from Northern rural Ghana.

9.
Curr Stem Cell Res Ther ; 16(2): 189-198, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-32628591

RESUMO

The world is currently engulfed with a viral disease with no cure. Thus, far, millions of people are infected with the virus across the length and breadth of the world, with thousands losing their lives each passing day. The WHO in February 2020 classified the virus as a coronavirus and the name Coronavirus-19 (CoV-19) was offered to the virus. The disease caused by the virus was termed coronavirus disease-19 (COVID-19). The pathogenesis of COVID-19 is associated with elevation of several immune players as well as inflammatory factors which contribute to cytokine storms. Currently, the detection of CoV-19 RNA is through reverse transcriptase-polymerase chain reaction (RTPCR). Mesenchymal stem cells (MSCs) are capable of suppressing several kinds of cytokines via the paracrine secretion system. Therefore, MSCs therapy could be game changer in the treatment of the current COVID-19 pandemic. Moreover, intravenous IG may be capable of suppressing the high expression of IL-6 by the CoV-19 resulting in lessen disease burden. Anti-inflammatory medications like, corticosteroids, tocilizumab, glycyrrhetinic acid, as well as etoposide may be very advantageous in decreasing the COVID-19 burden because their mode of action targets the cytokine storms initiated by the CoV-19. It is important to indicate that, these medications do not target the virus itself. Therefore, potent CoV-19 anti-viral medications are needed to completely cure patients with COVID-19. Furthermore, a vaccine is urgently needed to stop the spread of the virus. This review, therefore, elucidates the immune players in the management of COVID-19; focusing principally on MSCs and inflammatory mediators.


Assuntos
COVID-19/imunologia , COVID-19/virologia , Inflamação/patologia , Células-Tronco Mesenquimais/metabolismo , SARS-CoV-2/fisiologia , Humanos
10.
J Immunol Res ; 2020: 4582612, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33062720

RESUMO

Chloroquine (CQ) and hydroxychloroquine (HCQ) are derivatives of 4-aminoquinoline compounds with over 60 years of safe clinical usage. CQ and HCQ are able to inhibit the production of cytokines such as interleukin- (IL-) 1, IL-2, IL-6, IL-17, and IL-22. Also, CQ and HCQ inhibit the production of interferon- (IFN-) α and IFN-γ and/or tumor necrotizing factor- (TNF-) α. Furthermore, CQ blocks the production of prostaglandins (PGs) in the intact cell by inhibiting substrate accessibility of arachidonic acid necessary for the production of PGs. Moreover, CQ affects the stability between T-helper cell (Th) 1 and Th2 cytokine secretion by augmenting IL-10 production in peripheral blood mononuclear cells (PBMCs). Additionally, CQ is capable of blocking lipopolysaccharide- (LPS-) triggered stimulation of extracellular signal-modulated extracellular signal-regulated kinases 1/2 in human PBMCs. HCQ at clinical levels effectively blocks CpG-triggered class-switched memory B-cells from differentiating into plasmablasts as well as producing IgG. Also, HCQ inhibits cytokine generation from all the B-cell subsets. IgM memory B-cells exhibits the utmost cytokine production. Nevertheless, CQ triggers the production of reactive oxygen species. A rare, but serious, side effect of CQ or HCQ in nondiabetic patients is hypoglycaemia. Thus, in critically ill patients, CQ and HCQ are most likely to deplete all the energy stores of the body leaving the patient very weak and sicker. We advocate that, during clinical usage of CQ and HCQ in critically ill patients, it is very essential to strengthen the CQ or HCQ with glucose infusion. CQ and HCQ are thus potential inhibitors of the COVID-19 cytokine storm.


Assuntos
Anti-Inflamatórios/uso terapêutico , Betacoronavirus/efeitos dos fármacos , Cloroquina/uso terapêutico , Infecções por Coronavirus/tratamento farmacológico , Hidroxicloroquina/uso terapêutico , Pneumonia Viral/tratamento farmacológico , COVID-19 , Síndrome da Liberação de Citocina/tratamento farmacológico , Citocinas/biossíntese , Humanos , Pandemias , SARS-CoV-2 , Linfócitos T Auxiliares-Indutores/efeitos dos fármacos
11.
Pharmacol Res ; 152: 104630, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31911245

RESUMO

The incidence of type 2 diabetes (T2D) is gradually assuming pandemic proportions, leaving in its trail increased morbidity and mortality. This trend is mainly credited to the adoption of unhealthy lifestyles resulting in increased cases of overweightness and obesity. Traditionally, T2D is considered a metabolic disorder epitomized by prolonged elevated levels of glucose due to insulin resistance and/or decreased insulin secretion resulting from pancreatic ß-cells dysfunction. Our current understanding of the disease implicates the adipose tissue in the induction of low-grade chronic inflammation which in turn initiates a cascade of anti- and pro-inflammatory responses by the immune system ultimately damaging the ß-cells of the pancreas. The central role of inflammation in the initiation and progress of T2D is now receiving a lot of attention. This review gives an overview of the centrality of inflammation in the pathogenesis of T2D and focuses on the therapeutic potential of ginsenoside Rg1. This review is borne out of the hypothesis that, if inflammation is an absolute precondition to T2D initiation and progress, then attenuation of inflammation should hold therapeutic promise. In line with this, we highlight the anti-diabetic, hepatoprotective and neuroprotective effects of ginsenoside Rg1 among others and proffer suggestions for future studies.


Assuntos
Anti-Inflamatórios/uso terapêutico , Diabetes Mellitus Tipo 2/tratamento farmacológico , Ginsenosídeos/uso terapêutico , Animais , Humanos
12.
Front Oncol ; 9: 21, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30740360

RESUMO

A scorpion peptide reported to exhibit both analgesic and antitumor activity in animal models may present as an alternative therapeutic agent for breast cancer. We aimed to investigate the effect of Buthus martensii Karsch antitumor-analgesic peptide (BmK AGAP) on breast cancer cell stemness and epithelial-mesenchymal transition (EMT). We treated MCF-7 and MDA-MB-231 cells with different concentrations of rBmK AGAP and observed that rBmK AGAP inhibited cancer cell stemness, epithelial-mesenchymal transition (EMT), migration, and invasion. Analysis by qPCR, ELISA, western blot, immunofluorescence staining, sphere formation, colony assay, transwell migration, and invasion assays demonstrated rBmK AGAP treatment decreased the expressions of Oct4, Sox2, N-cadherin, Snail, and increased the expression of E-cadherin. rBmK AGAP inhibited breast cancer cell stemness, EMT, migration, and invasion by down-regulating PTX3 through NF-κB and Wnt/ß-catenin signaling Pathway in vitro and in vivo. Xenograft tumor model confirmed inhibition of tumor growth, stem-like features, and EMT by rBmK AGAP. Thus, rBmK AGAP is a potential therapeutic agent against breast cancer and related pain.

13.
Hum Immunol ; 79(11): 809-816, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-30125599

RESUMO

IL-8 is elevated during inflammation, and it initiates cascade of down-stream reactions. Its antagonist, CXCL8 (3-72) K11R/G31P (G31P), represses inflammatory reactions via competitive binding to CXC chemokine family, preferentially G protein-couple receptors (GPCRs) CXCR1/2. This study reports the effect of G31P on the transcription profile of lipopolysaccharide (LPS) induced inflammation in THP-1 monocytes ex-vivo. LPS (1 µg/ml) induced elevation of IL-8 was significantly reduced by G31P (20 µg/ml and 30 µg/ml), with relatively increased inhibition of CXCR2 than CXCR1. Transcription of IL-1ß, IL-6, and TNF-α were significantly inhibited, while IL-10 remained relatively unchanged. G31P treatment also had repressing effect on the inflammatory associated enzymes COX-2, MMP-2, and MMP-9. Significant restriction of c-Fos, and NF-kß mRNA expression was observed, while that of c-Jun was marginally elevated. Conversely, SP-1 mRNA expression was seen to increase appreciably by G31P treatment. While the translation of pAKT, pERK1/2, and p65- NF-kß were down-regulated by the G31P following THP-1 cells stimulation with LPS, reactive oxygen species (ROS) expression was on the positive trajectory. Collectively, the IL-8 analogue, G31P, modulates the inflammatory profile of LPS induced inflammation in THP-1 monocytes via AKT1-NF-kß and ERK1/2-AP-1 pathways.


Assuntos
Interleucina-8/farmacologia , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , Monócitos/efeitos dos fármacos , Monócitos/metabolismo , NF-kappa B/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Transdução de Sinais/efeitos dos fármacos , Fator de Transcrição AP-1/metabolismo , Linhagem Celular Tumoral , Citocinas/metabolismo , Expressão Gênica , Humanos , Mediadores da Inflamação/metabolismo , Lipopolissacarídeos/imunologia , Monócitos/imunologia , Espécies Reativas de Oxigênio
14.
Dig Dis Sci ; 61(10): 2908-2920, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27384052

RESUMO

BACKGROUND: Structural change in the gut microbiota is implicated in cancer. The beneficial modulation of the microbiota composition with probiotics and prebiotics prevents diseases. AIM: We investigated the effect of oligofructose-maltodextrin-enriched Lactobacillus acidophilus, Bifidobacteria bifidum, and Bifidobacteria infantum (LBB), on the gut microbiota composition and progression of colorectal cancer. METHODS: Sprague Dawley rats were acclimatized, given ampicillin (75 mg/kg), and treated as follows; GCO: normal control; GPR: LBB only; GPC: LBB+ 1,2-dimethylhydrazine dihydrochloride (DMH); and GCA: DMH only (cancer control). 16S V4 Pyrosequencing for gut microbiota analysis, tumor studies, and the expression of MUC2, ZO-1, occludin, TLR2, TLR4, caspase 3, COX-2, and ß-catenin were conducted at the end of experiment. RESULTS: Probiotic LBB treatment altered the gut microbiota. The relative abundance of genera Pseudomonas, Congregibacter, Clostridium, Candidactus spp., Phaeobacter, Escherichia, Helicobacter, and HTCC was decreased (P < 0.05), but the genus Lactobacillus increased (P < 0.05), in LBB treatment than in cancer control. The altered gut microbiota was associated with decreased tumor incidence (80 % in GPC vs. 100 % in GCA, P = 0.0001), tumor volume (GPC 84.23 (42.75-188.4) mm(3) vs. GCA 243 (175.5-344.5) mm(3), P < 0.0001) and tumor multiplicity/count (GPC 2.92 ± 0.26 vs. GCA 6.27 ± 0.41; P < 0.0001). The expression of MUC2, ZO-1, occludin, and TLR2 was increased, but expression of TLR4, caspase 3, Cox-2, and ß-catenin was decreased by LBB treatment than in cancer control GCA (P < 0.05). CONCLUSION: Administration of LBB modulates the gut microbiota and reduces colon cancer development by decreasing tumor incidence, multiplicity/count, and volume via enhanced TLR2-improved gut mucosa epithelial barrier integrity and suppression of apoptosis and inflammation.


Assuntos
Colo/efeitos dos fármacos , Neoplasias do Colo/metabolismo , Microbioma Gastrointestinal/efeitos dos fármacos , Probióticos/farmacologia , Receptor 2 Toll-Like/efeitos dos fármacos , 1,2-Dimetilidrazina/toxicidade , Animais , Bifidobacterium bifidum , Bifidobacterium longum subspecies infantis , Carcinógenos/toxicidade , Colo/metabolismo , Colo/microbiologia , Colo/patologia , Neoplasias do Colo/induzido quimicamente , Neoplasias do Colo/patologia , Ciclo-Oxigenase 2/genética , Modelos Animais de Doenças , Progressão da Doença , Imuno-Histoquímica , Lactobacillus acidophilus , Masculino , Mucina-2/genética , Neoplasias Experimentais/induzido quimicamente , Neoplasias Experimentais/metabolismo , Neoplasias Experimentais/patologia , Ratos , Ratos Sprague-Dawley , Reação em Cadeia da Polimerase em Tempo Real , Transdução de Sinais , Receptor 2 Toll-Like/genética , Receptor 4 Toll-Like/genética , Carga Tumoral/efeitos dos fármacos
15.
Biomed Pharmacother ; 83: 536-541, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27447122

RESUMO

BACKGROUND/AIM: Probiotics have been suggested as prophylactic measure in colon carcinogenesis. This study aimed at determining the potential prophylactic activity of Lactobacillus rhamnosus GG CGMCC 1.2134 (LGG) strain on colorectal carcinogenesis via measuring its effect on Nuclear factor kappa B (NFκB) inflammatory pathway and apoptosis. MATERIALS AND METHODS: 64 Sprague Dawley rats were grouped into four as follows; Group 1 (Healthy control), Group 2 (LGG), Group 3 (cancer control Dimethyl hydrazine (DMH)) and Group 4 (LGG+DMH). LGG was administered orally to LGG and LGG+DMH groups. Colon carcinogenesis was chemically induced in LGG+DMH and DMH groups by weekly injection of 40mg/kg DMH. Animals were sacrificed after 25 weeks of experiment and tumor characteristics assessed. The change in expression of NFκB-p65, COX-2, TNFα, Bcl-2, Bax, iNOS, VEGFα, ß-catenin, Casp3 and p53 were evaluated by western blotting and qRT-PCR. RESULTS: LGG treatment significantly reduced tumor incidence, multiplicity and volume in LGG+DMH treatment group compared to DMH cancer control group. Also, LGG treatment reduced the expression of ß-catenin and the inflammatory proteins NFκB-p65, COX-2 and TNFα; the anti-apoptotic protein Bcl-2, but increased the expression of the pro-apoptotic proteins Bax, casp3 and p53 compared with DMH group. CONCLUSION: LGG have a potential protection effect against colon carcinogenesis; inducing apoptosis and ameliorating inflammation, and may hold a promise as bio-therapeutic dietary agent.


Assuntos
Apoptose , Carcinogênese/patologia , Neoplasias do Colo/patologia , Células Epiteliais/patologia , Inflamação/patologia , Lacticaseibacillus rhamnosus/fisiologia , Animais , Citocinas/metabolismo , Modelos Animais de Doenças , Progressão da Doença , Feminino , Neovascularização Patológica/tratamento farmacológico , Neovascularização Patológica/patologia , Probióticos/farmacologia , Probióticos/uso terapêutico , Ratos Sprague-Dawley , Carga Tumoral
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