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1.
J Pak Med Assoc ; 73(Suppl 4)(4): S67-S71, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-37482833

RESUMEN

Objectives: To assessthe impact of a health educational programme on knowledge and health beliefs of female office workers regarding cervical cancer screening. Method: The quasi-experimental study was conducted at Kafrelsheikh University, Egypt, from March to September 2021, and comprised all female employees at the university regardless of department or professional status. After baseline assessment using a self-designed questionnaire, an educational session was conducted through small focussed groups having 1-5 participants in their own office environments. Post-intervention change in knowledge and beliefs was assessed using the same questionnaire 1 month after the intervention. Data was analysed using SPSS 22. RESULTS: Of the total 492 female employees, 360(73.2%) completed the study. Of them, 256(71.1%) were aged 30-40 years, 283(78.6%) were ever-married, 206(57.2%) were from urban communities, 322(89.4%) had university educational, 280(77.8%) had sufficient income, and 214(59.4%) had high socioeconomic status. The mean totalscores for knowledge and health beliefs increased significantly post-intervention (p<0.0001). CONCLUSIONS: The use of health belief model to change knowledge of and perceptions towards cervical cancer and its screening was found to be effective.


Asunto(s)
Detección Precoz del Cáncer , Neoplasias del Cuello Uterino , Femenino , Humanos , Egipto , Neoplasias del Cuello Uterino/diagnóstico , Neoplasias del Cuello Uterino/prevención & control , Universidades , Conocimientos, Actitudes y Práctica en Salud , Modelo de Creencias sobre la Salud , Tamizaje Masivo
2.
Malar J ; 17(1): 110, 2018 Mar 13.
Artículo en Inglés | MEDLINE | ID: mdl-29534720

RESUMEN

BACKGROUND: Malaria is a major public health problem in endemic countries including Sudan, where about 75% of populations are at risk. Due to widespread of chloroquine-resistant strains of Plasmodium falciparum, artemisinin-based combination therapy (ACT) is currently treatment of choice for malaria in the vast majority of malaria-endemic countries. This systematic review and meta-analysis is performed to obtain an overall stronger evidence of the outcomes of ACT in the treatment of uncomplicated falciparum malaria from the existing literature in Sudan. METHODS: The preferred reporting items for systematic review and meta-analysis statement were used to select studies to be included in this review. A computerized systematic strategy was adopted to search articles from PubMed, Google Scholar and Science Direct databases. Unpublished materials were also included. Open Meta-Analyst software was used to perform the meta-analysis. Random effects model was used to combine the included studies and the heterogeneity of studies was assessed using Cochrane Q and I2 (χ2 = 73.05, df (19), P < 0.001 and I2 = 73.99). RESULTS: Twenty studies fulfilled the inclusion criteria (ACT in the treatment of uncomplicated falciparum malaria) and were included in the final analysis with a total number of 4070 participants. Malaria treatment outcome was assessed using World Health Organization guidelines. Adequate clinical and parasitological response was used to assess treatment success at the 28th day. Treatment success of all combined studies was 98% [(95% CI 97.2-98.8%), P < 0.001]. Treatment success was higher in malaria patients treated with artemether + lumefantrine (AL) than patients treated with artesunate + sulfadoxine-pyrimethamine (AS + SP) (98.9% (95% CI 98.4-99.4%) vs 97.1% (95% CI 95.5-98.6%), P < 0.001). Eleven studies reported adverse drug reactions (ADRs) to ACT (184 participants out of 3957 (4.65%). The ADRs were mild and resolved spontaneously. There was no severe ADRs or deaths. CONCLUSION: Based on this review, the overall malaria treatment success was high (98%). AL regimen showed higher efficacy compared to AS + SP. The overall regimens were associated with mild low rates ADRs.


Asunto(s)
Antimaláricos/administración & dosificación , Antimaláricos/uso terapéutico , Artemisininas/administración & dosificación , Artemisininas/uso terapéutico , Malaria Falciparum/tratamiento farmacológico , Malaria Falciparum/epidemiología , Antimaláricos/efectos adversos , Artemisininas/efectos adversos , Quimioterapia Combinada , Humanos , Sudán/epidemiología
3.
Brain Behav Immun ; 61: 36-49, 2017 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-27825953

RESUMEN

Neuropeptide hormone oxytocin has roles in social bonding, energy metabolism, and wound healing contributing to good physical, mental and social health. It was previously shown that feeding of a human commensal microbe Lactobacillus reuteri (L. reuteri) is sufficient to up-regulate endogenous oxytocin levels and improve wound healing capacity in mice. Here we show that oral L. reuteri-induced skin wound repair benefits extend to human subjects. Further, dietary supplementation with a sterile lysate of this microbe alone is sufficient to boost systemic oxytocin levels and improve wound repair capacity. Oxytocin-producing cells were found to be increased in the caudal paraventricular nucleus [PVN] of the hypothalamus after feeding of a sterile lysed preparation of L. reuteri, coincident with lowered blood levels of stress hormone corticosterone and more rapid epidermal closure, in mouse models. We conclude that microbe viability is not essential for regulating host oxytocin levels. The results suggest that a peptide or metabolite produced by bacteria may modulate host oxytocin secretion for potential public or personalized health goals.


Asunto(s)
Limosilactobacillus reuteri , Oxitocina/metabolismo , Probióticos/administración & dosificación , Fenómenos Fisiológicos de la Piel , Piel/microbiología , Cicatrización de Heridas/fisiología , Adulto , Animales , Corticosterona/sangre , Suplementos Dietéticos , Femenino , Humanos , Ratones , Ratones Noqueados , Oxitocina/sangre , Oxitocina/genética , Regulación hacia Arriba , Adulto Joven
4.
Int J Cancer ; 135(3): 529-40, 2014 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-24382758

RESUMEN

Recent studies suggest health benefits including protection from cancer after eating fermented foods such as probiotic yogurt, though the mechanisms are not well understood. Here we tested mechanistic hypotheses using two different animal models: the first model studied development of mammary cancer when eating a Westernized diet, and the second studied animals with a genetic predilection to breast cancer. For the first model, outbred Swiss mice were fed a Westernized chow putting them at increased risk for development of mammary tumors. In this Westernized diet model, mammary carcinogenesis was inhibited by routine exposure to Lactobacillus reuteri ATCC-PTA-6475 in drinking water. The second model was FVB strain erbB2 (HER2) mutant mice, genetically susceptible to mammary tumors mimicking breast cancers in humans, being fed a regular (non-Westernized) chow diet. We found that oral supplement with these purified lactic acid bacteria alone was sufficient to inhibit features of mammary neoplasia in both models. The protective mechanism was determined to be microbially-triggered CD4+CD25+ lymphocytes. When isolated and transplanted into other subjects, these L. reuteri-stimulated lymphocytes were sufficient to convey transplantable anti-cancer protection in the cell recipient animals. These data demonstrate that host immune responses to environmental microbes significantly impact and inhibit cancer progression in distal tissues such as mammary glands, even in genetically susceptible mice. This leads us to conclude that consuming fermentative microbes such as L. reuteri may offer a tractable public health approach to help counteract the accumulated dietary and genetic carcinogenic events integral in the Westernized diet and lifestyle.


Asunto(s)
Linfocitos T CD4-Positivos/inmunología , Dieta Alta en Grasa/efectos adversos , Modelos Animales de Enfermedad , Predisposición Genética a la Enfermedad , Limosilactobacillus reuteri/fisiología , Neoplasias Mamarias Animales/prevención & control , Probióticos/uso terapéutico , Animales , Apoptosis , Linfocitos T CD4-Positivos/microbiología , Femenino , Neoplasias Mamarias Animales/genética , Neoplasias Mamarias Animales/microbiología , Mastocitos/inmunología , Mastocitos/microbiología , Ratones , Ratones Transgénicos
5.
F1000Res ; 9: 1284, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-34691394

RESUMEN

Background: Electronic devices for measuring blood pressure (BP) need to go through independent clinical validation as recommended by different authorities, both in general and specific populations. The aim of this study was to assess the validity of the Omron RS6 (HEM-6221-E) wrist oscillometric devices in obese Sudanese patients. Methods: Of 90 obese individuals invited for recruitment, 33 were included in the study, and had their BP at the level of the wrist measured using Omron RS6 and standard mercury sphygmomanometer. Two observations were made and the mean was taken. BP differences between the two methods for the 33 participants were classified into three categories (≤5, ≤10, and ≤15 mmHg), according to the European Society of Hypertension-International Protocol revision 2010 (ESH-IP2) criteria. This was then used to assess the validity of the tested Omron RS6 device. Results: Participants had a mean age of 56.97 years (standard deviation (SD), 8.75; range, 36-79). Average systolic blood pressure (SBP) was 146.21 mmHg (SD, 23.07; range, 107-182), and average diastolic blood pressure (DBP) was 93.82 mmHg (SD, 16.06; range, 67-128). There was a good agreement between the two observations using the OMRON RS6 and the standard sphygmomanometer: -4 to + 3 mmHg for SBP and -4 to +4 mmHg for DBP, with the mean difference of 1.73±1.11 mmHg for SBP and 1.49±1.02 mmHg for DBP. Conclusion: Thus, the Omron RS6 (HEM-6221-E) is a valid and suitable measure of BP according to ESH-IP2.


Asunto(s)
Hipertensión , Muñeca , Presión Sanguínea , Diseño de Equipo , Humanos , Hipertensión/diagnóstico , Persona de Mediana Edad , Obesidad , Variaciones Dependientes del Observador , Reproducibilidad de los Resultados , Esfigmomanometros
6.
BMC Hematol ; 18: 31, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30455961

RESUMEN

BACKGROUND: Anemia during pregnancy is a public health problem especially in developing countries and it is associated with maternal and perinatal adverse outcomes. There is no meta-analysis on anemia during pregnancy in Sudan. The current systemic review and meta-analysis was conducted to assess the prevalence, types and determinant of anemia during pregnancy in Sudan. METHODS: Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guideline was followed. The databases (PubMed, Cochrane Library, Google Scholar, CINAHL, and African Journals Online) were searched using; anemia, pregnancy related anemia and Sudan. Joanna Briggs Institute Meta-Analysis of Statistics Assessment and Review Instrument (JBI-MAStARI) and Modified Newcastle - Ottawa quality assessment scale were used for critical appraisal of studies. The pooled Meta logistic regression was computed using OpenMeta Analyst software. RESULTS: Sixteen cross-sectional studies included a total of 15, 688 pregnant women were analyzed. The pooled prevalence of anemia among pregnant women in Sudan was 53.0% (95%, CI = 45.9-60.1). The meta-analysis showed no statistical significant between the age (mean difference = 0.143, 95 CI = - 0.033 - 0.319, P = 0.112), parity (mean difference = 0.021, 95% CI = - 0.035 - 0.077, P = 0.465) between the anemic and no anemic women. Malaria was investigated in six studies. Pregnant women who had malaria infection during pregnancy were 1.94 times more likely to develop anemia than women who had no malaria infection (OR = 1.94, 95% CI =1.33-2.82). Six (37.5%) studies investigated type of anemia. The pooled prevalence of iron deficiency anemia (IDA) among pregnant women in Sudan was 13.6% (95% CI = 8.9-18.2). CONCLUSION: There is a high prevalence of anemia among pregnant in the different region of Sudan. While age and parity have no association with anemia, malaria infection was associated with anemia. Interventions to promote the strengthening of antenatal care, and access and adherence to nutrition, and malaria preventive measures are needed to reduce the high level of anemia among pregnant women in Sudan.

7.
J Taibah Univ Med Sci ; 13(6): 557-563, 2018 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31435378

RESUMEN

OBJECTIVES: The date fruit has been shown to possess several health benefits. This study aims to determine the effects of date fruit consumption on the onset and progression of labour. METHODS: A randomised controlled clinical study was conducted on 89 participants to assess the effects of date fruit consumption on the onset and progression of labour. Twenty-six participants consumed date fruits alone, and 32 consumed date fruits followed by drinking of water. Thirty-one served as controls. RESULTS: There was a significant positive impact of consuming (rutab) date fruits on maternal outcomes in both the first and third stages of labour (p < 0.05 and p < 0.001, respectively). In addition, there was a significant relationship with the foetal well-being factors, such as healthy liquor, foetal heart rate, presence of caput, and Appearance, Pulse, Grimace, Activity, and Respiration (APGAR) score at 5 min (p < 0.05). The other maternal and foetal well-being factors showed no significant relationship with consumption of date fruits during labour. CONCLUSION: The present study showed a promising effect of (rutab) date fruit consumption on the duration of the stages of labour. No significant differences were observed between the date fruit consumers and their counterparts regarding cervical dilatation; rupture of membranes; strength, frequency, and regularity of uterine contractions; tocometric reports; and maternal progression factors. Additionally, the APGAR score at 5 min was better among the infants whose mothers consumed date fruits.

8.
Oncotarget ; 9(50): 29536, 2018 06 29.
Artículo en Inglés | MEDLINE | ID: mdl-30034637

RESUMEN

[This corrects the article DOI: 10.18632/oncotarget.7730.].

9.
Chem Biol Interact ; 278: 170-178, 2017 Dec 25.
Artículo en Inglés | MEDLINE | ID: mdl-29080797

RESUMEN

Ochratoxin A (OTA) as a fungal metabolite is reported to induce cytotoxicity and apoptosis through the mechanism of oxidative stress. Oxidative stress could induce the epigenetic enzymes modifications. However, whether epigenetic enzymes modifications are involved in OTA-induced cytotoxicity and apoptosis has not been reported until now. Therefore, the objectives of this study were to verify OTA-induced cytotoxicity and apoptosis and to investigate the potential role of epigenetic enzymes in OTA-induced cytotoxicity and apoptosis in PK15 cells. The results demonstrated that OTA at 4 µg/ml treatment for 12 h and 24 h induced cytotoxicity and apoptosis as demonstrated by decreasing cell viability, increasing LDH release, Annexin V/PI staining, Bcl-2/Bax mRNA ratio and apoptotic nuclei in PK15 cells. OTA treatment up-regulated ROS production and down-regulated GSH levels. In addition, OTA treatment activated the epigenetics related enzymes DNA methyltransferase 1 (DNMT1) and Histone deacetylase 1 (HDAC1). Adding DNMT1 inhibitor (5-Aza-2dc) or HDAC1 inhibitor (LBH589) depressed the up-regulation of DNMT1 or HDAC1 expression, the decreases of GSH levels and increases of ROS production induced by OTA, respectively. Furthermore, inhibition of DNMT1 or HDAC1 by their inhibitor reversed the decreases of cell viability and increases of LDH activity and apoptosis induced by OTA, respectively. In conclusion, the observed effects indicate that the critical modulation of DNMT1 and HDAC1 is related to OTA-induced cytotoxicity and apoptosis.


Asunto(s)
Apoptosis/efectos de los fármacos , ADN (Citosina-5-)-Metiltransferasa 1/metabolismo , Histona Desacetilasa 1/metabolismo , Ocratoxinas/toxicidad , Animales , Línea Celular , ADN (Citosina-5-)-Metiltransferasa 1/antagonistas & inhibidores , ADN (Citosina-5-)-Metiltransferasa 1/genética , Regulación hacia Abajo/efectos de los fármacos , Glutatión/metabolismo , Histona Desacetilasa 1/antagonistas & inhibidores , Histona Desacetilasa 1/genética , L-Lactato Deshidrogenasa/metabolismo , Estrés Oxidativo/efectos de los fármacos , Proteínas Proto-Oncogénicas c-bcl-2/genética , Proteínas Proto-Oncogénicas c-bcl-2/metabolismo , Especies Reactivas de Oxígeno/metabolismo , Porcinos , Regulación hacia Arriba/efectos de los fármacos , Proteína X Asociada a bcl-2/genética , Proteína X Asociada a bcl-2/metabolismo
10.
Oncotarget ; 7(11): 11803-16, 2016 03 15.
Artículo en Inglés | MEDLINE | ID: mdl-26933816

RESUMEN

Muscle wasting, known as cachexia, is a debilitating condition associated with chronic inflammation such as during cancer. Beneficial microbes have been shown to optimize systemic inflammatory tone during good health; however, interactions between microbes and host immunity in the context of cachexia are incompletely understood. Here we use mouse models to test roles for bacteria in muscle wasting syndromes. We find that feeding of a human commensal microbe, Lactobacillus reuteri, to mice is sufficient to lower systemic indices of inflammation and inhibit cachexia. Further, the microbial muscle-building phenomenon extends to normal aging as wild type animals exhibited increased growth hormone levels and up-regulation of transcription factor Forkhead Box N1 [FoxN1] associated with thymus gland retention and longevity. Interestingly, mice with a defective FoxN1 gene (athymic nude) fail to inhibit sarcopenia after L. reuteri therapy, indicating a FoxN1-mediated mechanism. In conclusion, symbiotic bacteria may serve to stimulate FoxN1 and thymic functions that regulate inflammation, offering possible alternatives for cachexia prevention and novel insights into roles for microbiota in mammalian ontogeny and phylogeny.


Asunto(s)
Caquexia/prevención & control , Factores de Transcripción Forkhead/metabolismo , Limosilactobacillus reuteri/fisiología , Probióticos/farmacología , Sarcopenia/prevención & control , Animales , Caquexia/microbiología , Proliferación Celular , Células Cultivadas , Factores de Transcripción Forkhead/genética , Longevidad , Ratones , Ratones Endogámicos C57BL , Sarcopenia/microbiología , Timo/citología , Timo/microbiología
11.
Cancer Res ; 75(7): 1197-204, 2015 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-25716681

RESUMEN

Environmental factors are suspected in the increase of obesity and cancer in industrialized countries but are poorly understood. Here, we used animal models to test how future generations may be affected by Westernized diets. We discover long-term consequences of grandmothers' in utero dietary exposures, leading to high rates of obesity and frequent cancers of lung and liver in two subsequent generations of mice. Transgenerational effects were transplantable using diet-associated bacteria communities alone. Consequently, feeding of beneficial microbes was sufficient to lower transgenerational risk for cancer and obesity regardless of diet history. Targeting microbes may be a highly effective population-based approach to lower risk for cancer.


Asunto(s)
Microbiota , Neoplasias/microbiología , Animales , Animales no Consanguíneos , Dieta Occidental/efectos adversos , Heces/microbiología , Femenino , Tracto Gastrointestinal/microbiología , Masculino , Ratones , Obesidad/etiología , Riesgo
12.
Oncotarget ; 6(11): 9387-96, 2015 Apr 20.
Artículo en Inglés | MEDLINE | ID: mdl-25831236

RESUMEN

Recent studies suggest that gastrointestinal tract microbiota modulate cancer development in distant non-intestinal tissues. Here we tested mechanistic hypotheses using a targeted pathogenic gut microbial infection animal model with a predilection to breast cancer. FVB-Tg(C3-1-TAg)cJeg/JegJ female mice were infected by gastric gavage with Helicobacter hepaticus at three-months-of-age putting them at increased risk for mammary tumor development. Tumorigenesis was multifocal and characterized by extensive infiltrates of myeloperoxidase-positive neutrophils otherwise implicated in cancer progression in humans and animal models. To test whether neutrophils were important in etiopathogenesis in this bacteria-triggered model system, we next systemically depleted mice of neutrophils using thrice weekly intraperitoneal injections with anti-Ly-6G antibody. We found that antibody depletion entirely inhibited tumor development in this H. hepaticus-infected model. These data demonstrate that host neutrophil-associated immune responses to intestinal tract microbes significantly impact cancer progression in distal tissues such as mammary glands, and identify gut microbes as novel targets for extra-intestinal cancer therapy.


Asunto(s)
Bacterias/inmunología , Carcinogénesis/inmunología , Intestinos/microbiología , Neoplasias Mamarias Animales , Microbiota/fisiología , Neutrófilos/fisiología , Animales , Femenino , Infecciones por Helicobacter/inmunología , Helicobacter hepaticus/inmunología , Intestinos/inmunología , Neoplasias Mamarias Animales/inmunología , Neoplasias Mamarias Animales/microbiología , Neoplasias Mamarias Animales/patología , Ratones , Ratones Transgénicos , Microbiota/inmunología , Neutrófilos/patología
13.
PLoS One ; 9(1): e84877, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24392159

RESUMEN

The decline of circulating testosterone levels in aging men is associated with adverse health effects. During studies of probiotic bacteria and obesity, we discovered that male mice routinely consuming purified lactic acid bacteria originally isolated from human milk had larger testicles and increased serum testosterone levels compared to their age-matched controls. Further investigation using microscopy-assisted histomorphometry of testicular tissue showed that mice consuming Lactobacillus reuteri in their drinking water had significantly increased seminiferous tubule cross-sectional profiles and increased spermatogenesis and Leydig cell numbers per testis when compared with matched diet counterparts This showed that criteria of gonadal aging were reduced after routinely consuming a purified microbe such as L. reuteri. We tested whether these features typical of sustained reproductive fitness may be due to anti-inflammatory properties of L. reuteri, and found that testicular mass and other indicators typical of old age were similarly restored to youthful levels using systemic administration of antibodies blocking pro-inflammatory cytokine interleukin-17A. This indicated that uncontrolled host inflammatory responses contributed to the testicular atrophy phenotype in aged mice. Reduced circulating testosterone levels have been implicated in many adverse effects; dietary L. reuteri or other probiotic supplementation may provide a viable natural approach to prevention of male hypogonadism, absent the controversy and side-effects of traditional therapies, and yield practical options for management of disorders typically associated with normal aging. These novel findings suggest a potential high impact for microbe therapy in public health by imparting hormonal and gonad features of reproductive fitness typical of much younger healthy individuals.


Asunto(s)
Probióticos/administración & dosificación , Testículo/anatomía & histología , Testosterona/sangre , Factores de Edad , Animales , Atrofia , Dieta , Interleucina-17/metabolismo , Limosilactobacillus reuteri/fisiología , Células Intersticiales del Testículo/citología , Masculino , Ratones , Tamaño de los Órganos , Túbulos Seminíferos/citología , Espermatogénesis , Testículo/patología
14.
PLoS One ; 8(1): e53867, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23342023

RESUMEN

Radiant skin and hair are universally recognized as indications of good health. However, this 'glow of health' display remains poorly understood. We found that feeding of probiotic bacteria to aged mice induced integumentary changes mimicking peak health and reproductive fitness characteristic of much younger animals. Eating probiotic yogurt triggered epithelial follicular anagen-phase shift with sebocytogenesis resulting in thick lustrous fur due to a bacteria-triggered interleukin-10-dependent mechanism. Aged male animals eating probiotics exhibited increased subcuticular folliculogenesis, when compared with matched controls, yielding luxuriant fur only in probiotic-fed subjects. Female animals displayed probiotic-induced hyperacidity coinciding with shinier hair, a feature that also aligns with fertility in human females. Together these data provide insights into mammalian evolution and novel strategies for integumentary health.


Asunto(s)
Bacterias , Cabello/anatomía & histología , Cabello/efectos de los fármacos , Salud , Probióticos/farmacología , Piel/anatomía & histología , Piel/efectos de los fármacos , Alimentación Animal/microbiología , Animales , Femenino , Fertilidad/efectos de los fármacos , Cabello/metabolismo , Cabello/microbiología , Humanos , Concentración de Iones de Hidrógeno , Interleucina-10/metabolismo , Lactobacillus/fisiología , Masculino , Ratones , Piel/metabolismo , Piel/microbiología , Yogur/microbiología
15.
PLoS One ; 8(10): e78898, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-24205344

RESUMEN

Wound healing capability is inextricably linked with diverse aspects of physical fitness ranging from recovery after minor injuries and surgery to diabetes and some types of cancer. Impact of the microbiome upon the mammalian wound healing process is poorly understood. We discover that supplementing the gut microbiome with lactic acid microbes in drinking water accelerates the wound-healing process to occur in half the time required for matched control animals. Further, we find that Lactobacillus reuteri enhances wound-healing properties through up-regulation of the neuropeptide hormone oxytocin, a factor integral in social bonding and reproduction, by a vagus nerve-mediated pathway. Bacteria-triggered oxytocin serves to activate host CD4+Foxp3+CD25+ immune T regulatory cells conveying transplantable wound healing capacity to naive Rag2-deficient animals. This study determined oxytocin to be a novel component of a multi-directional gut microbe-brain-immune axis, with wound-healing capability as a previously unrecognized output of this axis. We also provide experimental evidence to support long-standing medical traditions associating diet, social practices, and the immune system with efficient recovery after injury, sustained good health, and longevity.


Asunto(s)
Limosilactobacillus reuteri/fisiología , Oxitocina/metabolismo , Simbiosis , Cicatrización de Heridas , Animales , Linfocitos T CD4-Positivos/inmunología , Colágeno/metabolismo , Proteínas de Unión al ADN/deficiencia , Agua Potable/microbiología , Femenino , Ratones , Oxitocina/sangre , Factores de Tiempo , Regulación hacia Arriba
16.
PLoS One ; 8(7): e68596, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23874682

RESUMEN

A recent epidemiological study showed that eating 'fast food' items such as potato chips increased likelihood of obesity, whereas eating yogurt prevented age-associated weight gain in humans. It was demonstrated previously in animal models of obesity that the immune system plays a critical role in this process. Here we examined human subjects and mouse models consuming Westernized 'fast food' diet, and found CD4(+) T helper (Th)17-biased immunity and changes in microbial communities and abdominal fat with obesity after eating the Western chow. In striking contrast, eating probiotic yogurt together with Western chow inhibited age-associated weight gain. We went on to test whether a bacteria found in yogurt may serve to lessen fat pathology by using purified Lactobacillus reuteri ATCC 6475 in drinking water. Surprisingly, we discovered that oral L. reuteri therapy alone was sufficient to change the pro-inflammatory immune cell profile and prevent abdominal fat pathology and age-associated weight gain in mice regardless of their baseline diet. These beneficial microbe effects were transferable into naïve recipient animals by purified CD4(+) T cells alone. Specifically, bacterial effects depended upon active immune tolerance by induction of Foxp3(+) regulatory T cells (Treg) and interleukin (Il)-10, without significantly changing the gut microbial ecology or reducing ad libitum caloric intake. Our finding that microbial targeting restored CD4(+) T cell balance and yielded significantly leaner animals regardless of their dietary 'fast food' indiscretions suggests population-based approaches for weight management and enhancing public health in industrialized societies.


Asunto(s)
Dieta/efectos adversos , Limosilactobacillus reuteri/fisiología , Obesidad/dietoterapia , Obesidad/etiología , Probióticos/uso terapéutico , Adolescente , Adulto , Animales , Células Cultivadas , Comida Rápida/efectos adversos , Femenino , Humanos , Intestinos/inmunología , Intestinos/microbiología , Masculino , Ratones , Ratones Endogámicos C57BL , Microbiota/fisiología , Persona de Mediana Edad , Obesidad/inmunología , Obesidad/microbiología , Linfocitos T Colaboradores-Inductores/fisiología , Mundo Occidental , Yogur , Adulto Joven
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