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1.
Medicine (Baltimore) ; 99(49): e23376, 2020 Dec 04.
Artículo en Inglés | MEDLINE | ID: mdl-33285720

RESUMEN

BACKGROUND: Rotavirus infection is the main cause of severe dehydration enteritis in children under 5 years old. It gives rise to malnutrition and even death in children even though there were rotavirus vaccines. However, there is no effective anti-virus drugs for rotavirus, supporting treatments are used in the clinics. Traditional Chinese medicine (TCM) has been treating diarrhea for many years. Gegen Huangqin Huanglian Decoction (GHHD)is a classic prescription for diarrhea in TCM. With the development of clinical trials and basic studies, GHHD has been proved that a good curative effect on diarrhea. Therefore, a systematic review is necessary to improve available evidence for GHHD in therapy of children under 5 years old with rotavirus enteritis. METHODS: Different studies from various databases will be involved in this study. Only randomized controlled trials of rotavirus enteritis patients diagnosed with Guidelines for the Treatment of Acute Gastroenteritis in Outpatient Pediatrics, which released by the Washington International Children's Medical Center, Zhu Futang's Practical Pediatrics (7 th Edition), and the 2016 clinical practice guidelines for children with acute infectious diarrhea in China. We will search the literature in the databases from China Conference Paper Database, manual searching. Electronic database includes PubMed, Embase, Cochrane Library, Web of Science, CNKI (China National Knowledge Internet), WanFang, VIP (Chongqing VIP), and CBM (China Biomedical Literature CDROM Database). The primary outcomes include the total effective rate, the time of stopping diarrhea, the level of IL-6 serum concentration, fecal microflora ratio, the conversion of fecal rotavirus antigen. The secondary outcomes include clinical efficacy and the quantitative integral of TCM symptom, recovery time of stool character, treatment period. Besides, incidence of adverse events (such as irritation and toxicity) and costs will be also considered. Data will be extracted by 2 researchers independently, risk of bias of the meta-analysis will be evaluated based on the Cochrane Handbook for Systematic Reviews of Interventions. All data analysis will be conducted by data statistics software Review Manager V.5.3 and Stata V.12.0. RESULTS: This study will synthesize and provide high-quality evidence based on the data of the currently published GHHD for the treatment of children rotavirus enteritis, in terms of the total effective rate, the time of stopping diarrhea, the level of IL-6 serum concentration, fecal microflora ratio, stool rotavirus antigen, clinical efficacy and the quantitative integral of TCM symptom, recovery time of stool character, treatment period, and safety. CONCLUSION: This systematic review aims to evaluated the benefits and harms of GHHD for the treatment of children rotavirus enteritis reported in randomized controlled trials, and provide more options for clinicians and patients to treat children rotavirus enteritis. REGISTRATION NUMBER: INPLASY2020100023.


Asunto(s)
Diarrea/tratamiento farmacológico , Medicamentos Herbarios Chinos/uso terapéutico , Infecciones por Rotavirus/tratamiento farmacológico , Preescolar , Diarrea/etiología , Diarrea/virología , Medicamentos Herbarios Chinos/efectos adversos , Heces/virología , Humanos , Lactante , Interleucina-6/sangre , Medicina Tradicional China/métodos , Ensayos Clínicos Controlados Aleatorios como Asunto , Proyectos de Investigación , Infecciones por Rotavirus/complicaciones , Metaanálisis como Asunto
2.
Medicine (Baltimore) ; 99(38): e22227, 2020 Sep 18.
Artículo en Inglés | MEDLINE | ID: mdl-32957362

RESUMEN

BACKGROUND: Diarrheal disease currently claims the lives of approximately 500,000 children each year. Rotaviruses are the pathogens primarily responsible for more severe cases and more than one-third of diarrhea-associated deaths in children under 5 years old globally. At present, commonly used drug therapies for rotavirus diarrhea in Western medicine, such as oral rehydration salts, montmorillonite, probiotics, and nitazoxanide, often cannot achieve satisfactory curative effects. Moreover, infants' and children's compliance with drugs and injections is often lower than their compliance with acupoint application therapy. A large number of studies have shown that acupoint application can increase the clinical cure rate and shorten the duration of diarrhea. However, there is a lack of systematic reviews on the safety and efficacy of acupoint application in the treatment of rotavirus diarrhea. Therefore, we will conduct a study to evaluate the safety and efficacy of acupoint application for rotavirus diarrhea in infants and children. METHODS: We will search the relevant medical literature using PubMed, EMBASE, Web of Science, Cochrane CENTRAL, China National Knowledge Infrastructure, the Wanfang Database, the Chinese Biomedical Literature Database, and the Chinese Scientific Journal Database from inception to August 2020. Both MeSH and free text terms will be utilized to obtain the maximum numbers of papers. No language restrictions will be applied, and the publication type will be limited to randomized controlled trials. Two teams will independently review and assess the studies for inclusion in the review. RevMan V 5.0 software will be applied for data extraction. The methodological quality of the included studies will be evaluated according to the Cochrane Handbook. RESULTS: The results of this study will be published in a peer-reviewed journal. CONCLUSION: The conclusion of this systematic review will provide evidence regarding whether acupoint application is an effective intervention for infants and children with rotavirus diarrhea. INPLASY REGISTRATION NUMBER: INPLASY202070123.


Asunto(s)
Puntos de Acupuntura , Diarrea/terapia , Medicina Tradicional China/métodos , Infecciones por Rotavirus/terapia , Niño , Diarrea/virología , Humanos , Lactante , Metaanálisis como Asunto , Infecciones por Rotavirus/complicaciones , Revisiones Sistemáticas como Asunto
3.
Dig Dis Sci ; 65(8): 2234-2245, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-31802384

RESUMEN

BACKGROUND: Previous studies have indicated that rotavirus (RV) is a causative factor for diarrhea and gastroenteritis in pediatric and neonatal settings. Baicalin has many functions, including antibacterial, antiinflammatory, and antihypertensive activities. However, the immunological mechanism of RV-induced diarrhea with heat-dampness syndrome (RV-DH) remains unclear. AIMS: The aim of this study is to explore the role of baicalin in RV-DH diarrhea and its underlying mechanism. METHODS: A mouse model of pediatric RV-DH diarrhea was established and treated with baicalin. The concentrations of cytokines were detected by enzyme-linked immunosorbent assay. Messenger RNA (mRNA) expression levels were detected by quantitative real-time polymerase chain reaction (qRT-PCR), while protein expression levels were determined by Western blotting and immunohistochemistry. Flow cytometry was used to detect the frequency of lymphocytes. RESULTS: The concentrations of interleukin-1ß (IL-1ß), IL-2, IL-6, IL-8, RVvb, and secretory immunoglobulin A (SIgA) in bronchoalveolar lavage fluid (BALF) and colonic mucosa were significantly increased in the RV-DH group. Decreased expression of occludin, claudin-1, and zonula occludens-1 (ZO-1) indicated loss of tight junction function and disturbances in intestinal mucosal permeability in the RV-DH group. Flow cytometry analysis showed a high rate of CD8+ lymphocytes and low amount of CD4+ lymphocytes in the RV-DH group. Treatment of RV-DH mice with baicalin significantly reduced the duration of diarrhea and ameliorated the symptoms and pathological and immunological changes. Furthermore, baicalin inhibited STAT1 and activated STAT3 signaling pathways. CONCLUSIONS: These findings indicate the curative and immunoregulatory properties of baicalin and have direct practical and clinical relevance for the treatment of RV-DH enteritis in humans.


Asunto(s)
Diarrea/tratamiento farmacológico , Medicamentos Herbarios Chinos/uso terapéutico , Flavonoides/uso terapéutico , Mucosa Intestinal/efectos de los fármacos , Pulmón/efectos de los fármacos , Animales , Colon/efectos de los fármacos , Colon/metabolismo , Diarrea/etiología , Modelos Animales de Enfermedad , Evaluación Preclínica de Medicamentos , Medicamentos Herbarios Chinos/farmacología , Flavonoides/farmacología , Mucosa Intestinal/inmunología , Pulmón/inmunología , Medicina Tradicional China , Ratones Endogámicos BALB C , Infecciones por Rotavirus/complicaciones , Factor de Transcripción STAT1/metabolismo , Factor de Transcripción STAT3/metabolismo
4.
J Trop Pediatr ; 66(1): 46-55, 2020 02 01.
Artículo en Inglés | MEDLINE | ID: mdl-31168590

RESUMEN

OBJECTIVES: To evaluate the effect of bovine colostrum (BC) on the treatment of children with acute diarrhea attending the outpatient clinic. METHODS: This double-blind randomized controlled trial was conducted on 160 children with diarrhea; 80 cases were randomly treated with BC group and 80 cases randomly received placebo (placebo group). All cases were investigated for bacterial causes of diarrhea (Salmonella spp, Shigella spp, diarrheagenic E. coli (DEC), Campylobacter spp., and Vibrio cholerae) as well as for Rotavirus antigen in stool. RESULTS: After 48 h, the BC group had a significantly lower frequency of vomiting, diarrhea and Vesikari scoring compared with the placebo group (p = 0.000, p = 0.000, p = 0.000, respectively), whether it was due to Rotavirus or E. coli infection. CONCLUSIONS: BC is effective in the treatment of acute diarrhea and can be considered as adjuvant therapy in both viral and bacterial diarrhea to prevent diarrhea-related complications.


Asunto(s)
Calostro , Diarrea Infantil/terapia , Enfermedad Aguda , Animales , Antígenos Virales/análisis , Lactancia Materna , Bovinos , Preescolar , Diarrea Infantil/microbiología , Diarrea Infantil/virología , Método Doble Ciego , Escherichia coli/aislamiento & purificación , Infecciones por Escherichia coli/complicaciones , Heces/microbiología , Heces/virología , Femenino , Humanos , Lactante , Fórmulas Infantiles , Masculino , Rotavirus/aislamiento & purificación , Infecciones por Rotavirus/complicaciones
5.
Food Funct ; 10(4): 2094-2101, 2019 Apr 17.
Artículo en Inglés | MEDLINE | ID: mdl-30916667

RESUMEN

Rotavirus (RV) is a pathogen that induces severe diarrhea in infants and young animals. Shiitake mushroom is a traditional food, which can improve physiological function, including gut health. Lentinan (LNT) is the main functional component of Shiitake mushroom. This study aimed to verify whether LNT administration could improve intestinal barrier function, thereby decreasing RV-induced diarrhea in a porcine model. According to initial weight and origin, a total of 28 weaned piglets were randomly fed 2 diets containing 0 or 84 mg kg-1 LNT for 19 d (n = 14). On day 15, RV was orally infused to half of the pigs in each group. RV-induced diarrhea (P < 0.05), the positive rate of RV non-structural protein 4 (NSP4), impaired intestinal morphology, antioxidant capacity and microbiota (P < 0.05), and increased apoptosis of jejunal epithelial cells (P < 0.05) were assessed in the piglets. Dietary LNT supplementation was found to improve intestinal morphology, permeability, antioxidant capacity and microbiota (P < 0.05). Supplementation also further alleviated the effects of RV infection on diarrhea, intestinal morphology, permeability, antioxidant capacity, microbiota and apoptosis of jejunal epithelial cells in piglets (P < 0.05). Thus, these results suggest that LNT administration relieved RV-induced diarrhea in piglets, which could be due to the increase in antioxidant capacity, reduction in apoptosis and improvement of the microbiota-increased gut barrier.


Asunto(s)
Diarrea/tratamiento farmacológico , Lentinano/administración & dosificación , Extractos Vegetales/administración & dosificación , Infecciones por Rotavirus/complicaciones , Rotavirus/fisiología , Hongos Shiitake/química , Animales , Antioxidantes/metabolismo , Diarrea/etiología , Diarrea/metabolismo , Diarrea/fisiopatología , Femenino , Microbioma Gastrointestinal/efectos de los fármacos , Humanos , Mucosa Intestinal/metabolismo , Mucosa Intestinal/microbiología , Mucosa Intestinal/patología , Masculino , Infecciones por Rotavirus/virología , Porcinos , Destete
6.
Nutrients ; 11(1)2019 Jan 10.
Artículo en Inglés | MEDLINE | ID: mdl-30634561

RESUMEN

Rotaviruses are the main cause of acute diarrhea among young children worldwide with an increased frequency of reinfection. Several life style factors, such as dietary components, may influence such processes by affecting the outcome of the first rotavirus infection and therefore having a beneficial impact on the anti-rotavirus immune responses during any subsequent reinfections. The aim of this research was to develop a double-infection model in rat that mimics real-life clinical scenarios and would be useful in testing whether nutritional compounds can modulate the rotavirus-associated disease and immune response. Three experimental designs and a preventive dietary-like intervention were conducted in order to achieve a differential response in the double-infected animals compared to the single-infected ones and to study the potential action of a modulatory agent in early life. Diarrhea was only observed after the first infection, with a reduction of fecal pH and fever. After the second infection an increase in body temperature was also found. The immune response against the second infection was regulated by the preventive effect of the dietary-like intervention during the first infection in terms of specific antibodies and DTH. A rotavirus-double-infection rat model has been developed and is suitable for use in future preventive dietary intervention studies.


Asunto(s)
Anticuerpos Antivirales/sangre , Calostro , Diarrea/virología , Dieta , Hipersensibilidad Tardía , Infecciones por Rotavirus/dietoterapia , Rotavirus , Animales , Animales Recién Nacidos , Temperatura Corporal , Bovinos , Diarrea/etiología , Diarrea/inmunología , Diarrea/prevención & control , Modelos Animales de Enfermedad , Heces , Fiebre , Humanos , Lactante , Ratones Endogámicos BALB C , Ratas Endogámicas Lew , Infecciones por Rotavirus/complicaciones , Infecciones por Rotavirus/inmunología , Infecciones por Rotavirus/virología , Destete
7.
Cochrane Database Syst Rev ; 4: CD011526, 2018 04 25.
Artículo en Inglés | MEDLINE | ID: mdl-29693719

RESUMEN

BACKGROUND: As mortality secondary to acute infectious diarrhoea has decreased worldwide, the focus shifts to adjuvant therapies to lessen the burden of disease. Smectite, a medicinal clay, could offer a complementary intervention to reduce the duration of diarrhoea. OBJECTIVES: To assess the effects of smectite for treating acute infectious diarrhoea in children. SEARCH METHODS: We searched the Cochrane Infectious Diseases Group Specialized Register, the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE (Pubmed), Embase (Ovid), LILACS, reference lists from studies and previous reviews, and conference abstracts, up to 27 June 2017. SELECTION CRITERIA: Randomized and quasi-randomized trials comparing smectite to a control group in children aged one month to 18 years old with acute infectious diarrhoea. DATA COLLECTION AND ANALYSIS: Two review authors independently screened abstracts and the full texts for inclusion, extracted data, and assessed risk of bias. Our primary outcomes were duration of diarrhoea and clinical resolution at day 3. We summarized continuous outcomes using mean differences (MD) and dichotomous outcomes using risk ratios (RR), with 95% confidence intervals (CI). Where appropriate, we pooled data in meta-analyses and assessed heterogeneity. We explored publication bias using a funnel plot. MAIN RESULTS: Eighteen trials with 2616 children met our inclusion criteria. Studies were conducted in both ambulatory and in-hospital settings, and in both high-income and low- or middle-income countries. Most studies included children with rotavirus infections, and half included breastfed children.Smectite may reduce the duration of diarrhoea by approximately a day (MD -24.38 hours, 95% CI -30.91 to -17.85; 14 studies; 2209 children; low-certainty evidence); may increase clinical resolution at day 3 (risk ratio (RR) 2.10, 95% CI 1.30 to 3.39; 5 trials; 312 children; low-certainty evidence); and may reduce stool output (MD -11.37, 95% CI -21.94 to -0.79; 3 studies; 634 children; low-certainty evidence).We are uncertain whether smectite reduces stool frequency, measured as depositions per day (MD -1.33, 95% CI -2.28 to -0.38; 3 studies; 954 children; very low-certainty evidence). There was no evidence of an effect on need for hospitalization (RR 0.93, 95% CI 0.75 to 1.15; 2 studies; 885 children; low-certainty evidence) and need for intravenous rehydration (RR 0.77, 95% CI 0.54 to 1.11; 1 study; 81 children; moderate-certainty evidence). The most frequently reported side effect was constipation, which did not differ between groups (RR 4.71, 95% CI 0.56 to 39.19; 2 studies; 128 children; low-certainty evidence). No deaths or serious adverse effects were reported. AUTHORS' CONCLUSIONS: Based on low-certainty evidence, smectite used as an adjuvant to rehydration therapy may reduce the duration of diarrhoea in children with acute infectious diarrhoea by a day; may increase cure rate by day 3; and may reduce stool output, but has no effect on hospitalization rates or need for intravenous therapy.


Asunto(s)
Antidiarreicos/uso terapéutico , Diarrea/terapia , Infecciones por Rotavirus/complicaciones , Silicatos/uso terapéutico , Enfermedad Aguda , Adolescente , Niño , Preescolar , Diarrea/virología , Humanos , Lactante , Ensayos Clínicos Controlados Aleatorios como Asunto
8.
Br J Nutr ; 117(2): 209-217, 2017 01.
Artículo en Inglés | MEDLINE | ID: mdl-28166850

RESUMEN

Human milk contains bioactive compounds that confer a protective role against gastrointestinal infections. In order to find supplements for an infant formula able to mimic these benefits of breast-feeding, two different concepts were tested. The products consisted of the following: (1) a Bifidobacterium breve- and Streptococcus thermophilus-fermented formula and (2) a combination of short-chain galacto-oligosaccharides/long-chain fructo-oligosaccharides with pectin-derived acidic oligosaccharides. A rotavirus infection suckling rat model was used to evaluate improvements in the infectious process and in the immune response of supplemented animals. Both nutritional concepts caused amelioration of the clinical symptoms, even though this was sometimes hidden by softer stool consistency in the supplemented groups. Both products also showed certain modulation of immune response, which seemed to be enhanced earlier and was accompanied by a faster resolution of the process. The viral shedding and the in vitro blocking assay suggest that these products are able to bind the viral particles, which can result in a milder infection. In conclusion, both concepts evaluated in this study showed interesting protective properties against rotavirus infection, which deserve to be investigated further.


Asunto(s)
Bacterias , Lactancia Materna , Fermentación , Gastroenteritis/prevención & control , Leche/microbiología , Oligosacáridos/uso terapéutico , Infecciones por Rotavirus/complicaciones , Animales , Animales Recién Nacidos , Bifidobacterium , Suplementos Dietéticos , Fructosa/farmacología , Fructosa/uso terapéutico , Galactosa/farmacología , Galactosa/uso terapéutico , Gastroenteritis/etiología , Gastroenteritis/virología , Humanos , Lactante , Fórmulas Infantiles , Fenómenos Fisiológicos Nutricionales del Lactante , Leche Humana/química , Oligosacáridos/farmacología , Pectinas/química , Ratas , Rotavirus , Infecciones por Rotavirus/virología , Streptococcus thermophilus , Esparcimiento de Virus
9.
Cir. pediátr ; 23(4): 206-210, oct. 2010. ilus, tab
Artículo en Español | IBECS | ID: ibc-107275

RESUMEN

En algunas series se ha apreciado una disminución en la incidencia de las invaginaciones intestinales en los últimos años. Además, la reciente introducción de nuevos tipos de vacunas contra el rotavirus hace que el seguimiento de la incidencia de las invaginaciones intestinales adquiera importancia. Para ello, son necesarios datos epidemiológicos locales fiables. Con el objetivo de conocer la evolución de la incidencia de las invaginaciones y su valor actual en nuestro área, hemos realizado un estudio retrospectivo de los pacientes menores de 3 años diagnosticados de Invaginación Intestinal y con confirmación por enema opaco o ecografía durante los últimos 21 años. En los resultados obtenidos se observa una disminución estadísticamente significativa de la tasa de incidencia, con una razón de incidencias de un año respecto al anterior de 0,82 (IC95% 0,78-0,86) pasando de una incidencia estimada para 1987 de 17,74 casos por cada 10.000niñas y 30,04 casos por cada 10.000 niños, a una incidencia estimada en 2008 de 0,27 casos por cada 10.000 niñas y 0,49 casos por cada 10.000niños.Concluimos que en nuestra serie se aprecia en el periodo estudiado un importante descenso de la incidencia de las invaginaciones intestinales, especialmente en los pacientes de menos de un año y estableciéndose la incidencia actual en 0,27 casos por cada 10.000 niñas y 0,49casos por cada 10.000 niños menores de 3 años (AU)


Some series have shown a decrease in the incidence of intestinal invaginations in last years. Moreover, the recent introduction of new types of rotavirus vaccines increases the interest of invagination’s incidence. To this purpose, reliable local epidemiological data are needed. In order to ascertain the trend in the incidence of invaginations and their current value in our area we have performed a retrospective review of patients under 3 years of age with the diagnosis of intussusception and confirms with barium enema or ultrasound examination during the past 21 years. Our results show a statistically significant decrease in the incidence rate, with an incidence rate of one year from the previous 0.82 (95%0,78-0, 86) from an estimated incidence for 1987 of 17.74 cases per10,000 girls and 30.04 cases per 10,000 boys, in 2008 an estimated incidence of 0.27 cases per 10,000 girls and 0.49 cases per 10,000 boys. We conclude that in our population during the study period a significant decrease of invagination’ s incidence has been seen, especially in patients younger than one year. The current incidence is 0.27 cases per 10,000 girls and 0.49 cases per 10,000 boys less than 3 years old (AU)


Asunto(s)
Humanos , Masculino , Femenino , Lactante , Preescolar , Intususcepción/epidemiología , Infecciones por Rotavirus/complicaciones , Rotavirus/patogenicidad , Vacunas contra Rotavirus/administración & dosificación , Estudios Retrospectivos
10.
Artículo en Chino | MEDLINE | ID: mdl-19031708

RESUMEN

OBJECTIVE: To investigate the annual incidence rate of intussusception over a 5-year period in Suzhou and to determine whether there was a potential link between intussusception rotavirus diarrhea. METHODS: Outpatient and inpatient data from 1999 through 2003 retrospectively were reviewed for young children (< 2 year old) whose diagnosis was confirmed by ultrasonography or radiography and patients were reduced by air enema or surgery. From September 2001, to August 2003, inpatients with diarrhea (< 2 year old) were detected rotavirus antigen in the stool by ELISA technology. RESULTS: From 1999 through 2003, 1101 cases were reported in children below 2 years old. The incidence rate of intussusception under 1 year age each year was 275.3, 338.2, 547.0, 515.3, and 425.4 per 100,000 child years respectively (the average annual incidence was 418.1 per 100,000 child years), and the incidence of intussusception increased over time from 1999 to 2003. A peak age distribution of intussusception was infants 4 to 10 months old (692/1101, 62.85%) and mean age was 9.62 +/- 5.65 months, which were greatly different from those of patients with rotavirus diarrhea, whose peak age distribution was 5 to 16 months old (252/331, 76.13%), and mean age was 11.42 +/- 5.14 months (Z = 6.90, P < 0.01). The peak month distribution of intussusception was from April to August (595/1101, 54.04%), which was distinct from that of patient with rotavirus diarrhea, whose peak month distribution was between October and January (232/331, 70.09%). Test: chi2 = 226.06, P < 0.001. CONCLUSION: The annual incidence rate of intussusception for < 1 year of age was 418.1 per 100,000 child years in Suzhou. We found no epidemiologic evidence for an association between intussusception and rotavirus diarrhea.


Asunto(s)
Diarrea/complicaciones , Intususcepción/epidemiología , Infecciones por Rotavirus/complicaciones , Factores de Edad , China/epidemiología , Diarrea/epidemiología , Diarrea/virología , Femenino , Humanos , Lactante , Intususcepción/etiología , Masculino , Estudios Retrospectivos , Rotavirus , Infecciones por Rotavirus/epidemiología , Infecciones por Rotavirus/virología , Estaciones del Año
11.
J Nutr ; 135(6): 1470-4, 2005 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-15930454

RESUMEN

Rotavirus-induced diarrhea is a common infection that results in the death of nearly 500,000 children annually. Currently, no large-scale preventative treatments or vaccines exist. Because some whey protein concentrates (WPC) were shown to contain bioactive ingredients that may activate immune cells and/or prevent infection, the current study was conducted to assess whether the proprietary WPC IMUCARE (WPC-IC) could protect against rotavirus. Suckling BALB/c mice were treated by gavage once daily with WPC-IC or with the control protein bovine serum albumin from the age of 9 to 17 d, and were infected with murine rotavirus at the age of 11 d. Disease symptoms were graded as mild, moderate, or severe, and viral shedding was measured in fecal samples during the postinfection period. Severe diarrhea occurred in 63% of control mice; this was significantly reduced to 36% in WPC-IC-fed mice. Severe diarrhea occurred for a 4-d period in the control group but only for a 2-d period in the WPC-IC group. Although the mean viral load per mouse did not differ between the groups, the proportion of mice shedding high levels of the virus in the feces postinfection was significantly lower in the WPC-IC group on d 13, 16, and 17, and significantly higher on d 14. Rotavirus-specific antibody levels in serum and gut fluid did not differ between groups. Thus, prophylactic treatment with WPC-IC may reduce rotaviral disease by decreasing the prevalence of severe diarrhea and by decreasing the time period during which severe symptoms and high viral shedding occur.


Asunto(s)
Animales Lactantes , Diarrea/fisiopatología , Diarrea/virología , Dieta , Proteínas de la Leche/administración & dosificación , Infecciones por Rotavirus/complicaciones , Animales , Anticuerpos Antivirales/sangre , Suplementos Dietéticos , Heces/virología , Ratones , Ratones Endogámicos BALB C , Rotavirus/inmunología , Rotavirus/aislamiento & purificación , Infecciones por Rotavirus/virología , Índice de Severidad de la Enfermedad , Esparcimiento de Virus , Aumento de Peso , Proteína de Suero de Leche
12.
Am J Vet Res ; 64(4): 485-90, 2003 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-12693541

RESUMEN

OBJECTIVE: To determine the prevalence, fecal shedding pattern, and association of bovine torovirus (BoTV) with diarrhea in veal calves at time of arrival and periodically throughout the first 35 days after their arrival on a veal farm. ANIMALS: 62 veal calves. PROCEDURE: Fecal samples collected on days 0, 4, 14, and 35 after arrival were tested for BoTV by use of ELISA and reverse transcriptase-polymerase chain reaction (RT-PCR) assay. Paired serum samples obtained from blood collected on days 0 and 35 were analyzed for BoTV antibodies with a hemagglutination inhibition assay. Fecal samples were also screened for other enteric pathogens, including rotavirus, coronavirus, and Cryptosporidium spp. RESULTS: Fecal shedding of BoTV was detected in 15 of 62 (24%) calves by use of ELISA and RT-PCR assay, with peak shedding on day 4. A significant independent association between BoTV shedding and diarrhea was observed. In addition, calves shedding > or = 2 enteric pathogens were more likely to have diarrhea than calves shedding < or = 1 pathogen. Calves that were seronegative or had low antibody titers against BoTV (< or = 1:10 hemagglutination inhibition units) at arrival seroconverted to BoTV (> 4-fold increase in titer); these calves were more likely to shed virus than calves that were seropositive against BoTV at arrival. CONCLUSIONS AND CLINICAL RELEVANCE: Shedding of BoTV was strongly associated with diarrhea in neonatal veal calves during the first week after arrival at the farm. These data provide evidence that BoTV is an important pathogen of neonatal veal calves.


Asunto(s)
Enfermedades de los Bovinos/virología , Diarrea/veterinaria , Diarrea/virología , Infecciones por Torovirus/veterinaria , Torovirus/aislamiento & purificación , Torovirus/fisiología , Esparcimiento de Virus , Animales , Anticuerpos Antivirales/análisis , Anticuerpos Antivirales/sangre , Bovinos , Enfermedades de los Bovinos/diagnóstico , Calostro/inmunología , Infecciones por Coronavirus/complicaciones , Infecciones por Coronavirus/diagnóstico , Infecciones por Coronavirus/veterinaria , Infecciones por Coronavirus/virología , Coronavirus Bovino/aislamiento & purificación , Diarrea/complicaciones , Ensayo de Inmunoadsorción Enzimática , Heces/virología , Inmunoglobulina G/análisis , Masculino , Prevalencia , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Rotavirus/aislamiento & purificación , Infecciones por Rotavirus/complicaciones , Infecciones por Rotavirus/diagnóstico , Infecciones por Rotavirus/veterinaria , Infecciones por Rotavirus/virología , Torovirus/genética , Torovirus/inmunología , Infecciones por Torovirus/complicaciones , Infecciones por Torovirus/diagnóstico , Infecciones por Torovirus/virología , Cultivo de Virus
13.
J Nutr ; 131(1): 111-7, 2001 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-11208946

RESUMEN

Group A rotavirus is the leading cause of diarrhea among children aged 3-36 mo worldwide. Introducing fermented milk products into the infant diet has been proposed for the prevention or treatment of rotavirus diarrhea. The preventive effect of milk fermented by the Lactobacillus casei strain DN-114 001 was studied in a model of germfree suckling rats supplemented daily from d 2 of life and infected with SA11 rotavirus at d 5 (RF group). One group was supplemented with nonfermented milk (RM) and two uninfected groups (CM and CF) received either nonfermented or fermented milk. Frequency and severity of diarrhea were observed. Rats were killed at various times from 0 to 120 h postinfection (p.i.). Bacteria were measured in the intestine, and rotavirus antigens were detected by ELISA in fecal samples and in different parts of the intestine. Histologic observations were made, including vacuolation, morphology of intestinal villi and number of mucin cells. RM rats had diarrhea for 6 d; compared with the CM group, they had alterations of the intestinal mucosa characterized by cellular vacuolation 48 and 72 h p.i. and a lower number of sulfated mucin cells 72 and 96 h p.i. (P: < 0.05). Early supplementation with fermented milk significantly decreased the clinical signs of diarrhea from 24 to 144 h p.i. (P: < 0.05) and prevented rotavirus infection in all sections of the intestine. Histologic lesions of the small intestine were greatly reduced (P: < 0.05) and the number of mucin cells remained unchanged. The data are discussed with respect to the possibility of reducing rotavirus diarrhea in young children by consumption of fermented milk.


Asunto(s)
Animales Lactantes/fisiología , Diarrea/microbiología , Diarrea/prevención & control , Suplementos Dietéticos , Fermentación , Lacticaseibacillus casei/fisiología , Leche/microbiología , Infecciones por Rotavirus/complicaciones , Animales , Antígenos Virales/análisis , Recuento de Colonia Microbiana , Yeyuno/patología , Lacticaseibacillus casei/crecimiento & desarrollo , Microvellosidades/patología , Ratas , Ratas Endogámicas F344 , Rotavirus/inmunología , Infecciones por Rotavirus/inmunología , Infecciones por Rotavirus/patología
14.
Pediatr Int ; 42(4): 440-7, 2000 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-10986884

RESUMEN

Human rotaviruses are the major etiologic agents of diarrhea in infants and young children under 2 years of age worldwide. Rotavirus diarrhea is a life-threatening disease for children; many efforts are made to reduce the morbidity and mortality in Asia. To date many natural compounds and some Western medicines have exhibited their antirotavirus effects in clinical studies, in animal experiments and in vitro. Compared with antirotavirus agents in the USA and Europe, natural compounds have been identified as ideal candidates for antirotaviral drugs in Asia because they are cheaper and effective, have no side-effect and no toxicity. We have attempted to reveal the antirotavirus mechanism of some natural compounds. We found that cacao pigment, tea extract and pine seed shell extract inhibit rotavirus adsorption to cells while cacao pigment may also inhibit rotavirus reproduction in vitro. The usage of antirotavirus agents in Asia demonstrated that additional effective approaches to control rotavirus infection, such as antirotavirus agents, are necessary, in particular for the children with rotavirus diarrhea who have severe complications.


Asunto(s)
Antivirales/uso terapéutico , Medicina Tradicional de Asia Oriental , Infecciones por Rotavirus/tratamiento farmacológico , Asia , Preescolar , Diseño de Fármacos , Humanos , Lactante , Bienestar del Lactante , Recién Nacido , Infecciones por Rotavirus/complicaciones
15.
Eur J Pediatr ; 157(10): 838-42, 1998 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-9809825

RESUMEN

UNLABELLED: We observed an association between rotavirus diarrhoea and hypocalcaemia in several patients and therefore started a prospective evaluation with measurement of calcium levels in all patients with rotavirus infection during a period of 8 months. We report on 54 infants with rotavirus gastro-enteritis. Serum concentrations of sodium, potassium, and total and ionized calcium were measured on admission. If hypocalcaemia was detected, total and ionized calcium were measured every day until recovery. Calcium was supplemented as calcium gluconate which was added to milk. Out of 54 newborns with rotavirus gastro-enteritis, 20 developed hypocalcaemia. All these newborns had severe diarrhoea. Seven infants were admitted because of convulsions, but EEG and ultrasonographic examination of the brain revealed no abnormalities. Once the infants' clinical condition and the consistency and frequency of the stool had improved, calcium concentrations increased and remained within the reference range without supplementation. CONCLUSION: Rotavirus gastro-enteritis seems to be a cause of neonatal hypocalcaemia.


Asunto(s)
Gastroenteritis/complicaciones , Hipocalcemia/etiología , Infecciones por Rotavirus/complicaciones , Diarrea Infantil/complicaciones , Diarrea Infantil/virología , Ensayo de Inmunoadsorción Enzimática , Gastroenteritis/virología , Humanos , Recién Nacido
16.
Vopr Virusol ; 39(2): 87-91, 1994.
Artículo en Ruso | MEDLINE | ID: mdl-8017063

RESUMEN

Experimental and clinical studies showed a number of virus infections to be accompanied by lipidemic disorders. Experimentally, dyslipidemias were found in tick-borne encephalitis (TBE) in mice, rotavirus infection in rabbits, and amyotrophic leukospongiosis in guinea pigs. The possibility of correcting the virus-induced lipidemic disorders with an antiviral drug, lincomycin, was demonstrated in TBE in mice. Dynamic study of the lipidemic status of patients with virus hepatitis A revealed marked dyslipidemia of the atherogenic type which was stable and persisted up to the time of clinical recovery. The data obtained supplement the current concepts concerning the pathogenesis of virus infections.


Asunto(s)
Encefalitis Transmitida por Garrapatas/complicaciones , Hepatitis A/complicaciones , Hiperlipidemias/etiología , Enfermedades por Prión/complicaciones , Infecciones por Rotavirus/complicaciones , Adulto , Animales , Terapia Combinada , Modelos Animales de Enfermedad , Evaluación Preclínica de Medicamentos , Encefalitis Transmitida por Garrapatas/sangre , Encefalitis Transmitida por Garrapatas/tratamiento farmacológico , Femenino , Cobayas , Hepatitis A/sangre , Hepatitis A/terapia , Humanos , Hiperlipidemias/sangre , Hiperlipidemias/epidemiología , Lincomicina/uso terapéutico , Lípidos/sangre , Lipoproteínas/sangre , Masculino , Ratones , Enfermedades por Prión/sangre , Conejos , Factores de Riesgo , Infecciones por Rotavirus/sangre , Factores de Tiempo
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