In this study, we investigated the influence of the inclusion of Tenebrio molitor (TM) larvae meal in the diet on the diversity and structure of the bacterial community in the caecal content of Barbary partridges. A total of 36 partridges, selected randomly for slaughter from 54 animals, were divided equally into three treatment groups, including the control group (C) with a diet containing corn-soybean meal and two experimental groups, in which 25% (TM25) and 50% (TM50) of the soybean meal protein was replaced by the meal from TM larvae. After slaughtering, the bacterial community of the 30 caecal samples (10 samples per each experimental group) was analysed by high-throughput sequencing using the V4-V5 region of the 16 S rRNA gene. Alpha diversity showed a higher diversity richness in the TM50 group. Beta diversity showed statistical dissimilarities among the three groups. Firmicutes was the dominant phylum regardless of the diet, with the predominant families Ruminococcaceae and Lachnospiraceae. Clostridia and Faecalibacterium were decreased in both TM groups, Lachnospiraceae was suppressed in the TM50 group, but still this class, genus and family were abundantly present in all samples. Several potentially beneficial genera, such as Bacillus, Ruminococcaceae UCG-009, Oscillibacter and UC1-2E3 (Lachnospiraceae) were increased in the TM50 group. The results showed a beneficial effect of the T. molitor larvae meal on the caecal microbiota of Barbary partridges, particularly in the TM50 group, which showed an increase in bacterial diversity.
- Klíčová slova
- Tenebrio molitor larvae meal, Caecal microbiota, Partridges,
- MeSH
- Bacteria klasifikace genetika izolace a purifikace MeSH
- biodiverzita MeSH
- cékum * mikrobiologie MeSH
- dieta MeSH
- Galliformes mikrobiologie MeSH
- krmivo pro zvířata * MeSH
- larva * mikrobiologie MeSH
- RNA ribozomální 16S genetika MeSH
- střevní mikroflóra * MeSH
- Tenebrio * mikrobiologie MeSH
- vysoce účinné nukleotidové sekvenování MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- RNA ribozomální 16S MeSH
BACKGROUND AND AIMS: Ileocaecal resection (ICR) is frequent in paediatric patients with Crohn's disease (pCD). Despite rates of reoperation being low, the risk of clinical or endoscopic post-operative recurrence (POR) is high; effective medical strategies to prevent POR are thus needed. The aim of this systematic review (SR) was to identify and evaluate the published literature on post-operative medical prevention of POR in pCD to draft a possible therapy guide for pCD patients undergoing ICR. METHODS: We performed an SR according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) standards and registered it in the PROSPERO database (ID: CRD42024533855). The population, intervention, control, outcome (PICO) model was focussed on post-surgical medical prevention of POR in pCD with clearly expressed definition of recurrence (endoscopically using a standardized scoring system (e.g. Rutgeerts score) or by laboratory markers, for example, faecal calprotectin (F-CPT), C-reactive protein (CRP) or by histological findings or by clinical activity indexes [e.g. weighted paediatric Crohn's disease activity index - (w)PCDAI]. From inception until 29 February 2024, the following databases were searched: PubMed/MEDLINE, Scopus/Embase, Web of Sciences, Evidence-Based Medicine Reviews (including Cochrane), Cochrane Central Registrar of controlled Trials (CENTRAL), ClinicalTrials.gov and EudraCT. Retrieved articles were evaluated for eligibility and finally selected publications for risk of bias using ROBINS-I tool. RESULTS: Out of 811 publications identified by the search, only 5 fulfilled inclusion criteria of the SR. None of the studies fully answered our PICO question. The studies were overall of poor quality and the heterogeneity of the data did not allow us to perform meta-analysis, detailed statistical analysis or formal synthesis of data. Adverse events of post-operative medication were not described in any of the included studies. Existing guidelines of European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN), North American Society for Paediatric Gastroenterology, Hepatology and Nutrition (NASPGHAN), European Crohn's and Colitis Organisation (ECCO) and American Gastroenterological Association (AGA) were reviewed and paediatric therapy guide for pCD undergoing ICR was drafted with respect to recent SRs and meta-analyses in adult population and including scarce paediatric data identified by our SR. As pCD patients undergoing ICR are a high-risk population, they should not be left untreated post-operatively. Anti-tumour necrosis factor (anti-TNF) drugs should be considered as first-line therapy in the majority of patients. Non-anti-TNF biologics should be considered in case of anti-TNF failure. Regular endoscopic monitoring starting at 6 months after the surgery and supported by regular F-CPT evaluation should be used to identify early endoscopic recurrence and to escalate the treatment. CONCLUSION: Our SR revealed that there is wide variability in treatment strategies in children, and high-quality data are generally lacking. At the moment, paediatric prophylaxis of POR should be guided by available adult evidence with respect to the high-risk nature of pCD. Extensive research in pCD should be encouraged.
- MeSH
- cékum chirurgie MeSH
- Crohnova nemoc * chirurgie prevence a kontrola MeSH
- dítě MeSH
- ileum chirurgie MeSH
- lidé MeSH
- pooperační komplikace prevence a kontrola MeSH
- recidiva * MeSH
- sekundární prevence metody MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- systematický přehled MeSH
The chicken caecum is colonised by hundreds of different bacterial species. Which of these are targeted by immunoglobulins and how immunoglobulin expression shapes chicken caecal microbiota has been addressed in this study. Using cell sorting followed by sequencing of V3/V4 variable region of 16S rRNA, bacterial species with increased or decreased immunoglobulin coating were determined. Next, we determined also caecal microbiota composition in immunoglobulin knockout chickens. We found that immunoglobulin coating was common and major taxa were coated with immunoglobulins. Similarly, more taxa required immunoglobulin production for caecum colonisation compared to those which became abundant in immunoglobulin-deficient chickens. Taxa with low immunoglobulin coating such as Lactobacillus, Blautia, [Eubacterium] hallii, Megamonas, Fusobacterium and Desulfovibrio all encode S-layer proteins which may reduce interactions with immunoglobulins. Although there were taxa which overgrew in Ig-deficient chickens (e.g. Akkermansia) indicating immunoglobulin production acted to exclude them from the chicken caecum, in most of the cases, immunoglobulin production more likely contributed to fixing the desired microbiota in the chicken caecum.
- MeSH
- Bacteria klasifikace genetika MeSH
- cékum * mikrobiologie MeSH
- imunoglobuliny * MeSH
- kur domácí * mikrobiologie imunologie MeSH
- RNA ribozomální 16S * genetika MeSH
- střevní mikroflóra * MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- imunoglobuliny * MeSH
- RNA ribozomální 16S * MeSH
Complex gut microbiota increases chickens' resistance to enteric pathogens. However, the principles of this phenomenon are not understood in detail. One of the possibilities for how to decipher the role of gut microbiota in chickens' resistance to enteric pathogens is to systematically characterise the gene expression of individual gut microbiota members colonising the chicken caecum. To reach this aim, newly hatched chicks were inoculated with bacterial species whose whole genomic sequence was known. Total protein purified from the chicken caecum was analysed by mass spectrometry, and the obtained spectra were searched against strain-specific protein databases generated from known genomic sequences. Campylobacter jejuni, Phascolarctobacterium sp. and Sutterella massiliensis did not utilise carbohydrates when colonising the chicken caecum. On the other hand, Bacteroides, Mediterranea, Marseilla, Megamonas, Megasphaera, Bifidobacterium, Blautia, Escherichia coli and Succinatimonas fermented carbohydrates. C. jejuni was the only motile bacterium, and Bacteroides mediterraneensis expressed the type VI secretion system. Classification of in vivo expression is key for understanding the role of individual species in complex microbial populations colonising the intestinal tract. Knowledge of the expression of motility, the type VI secretion system, and preference for carbohydrate or amino acid fermentation is important for the selection of bacteria for defined competitive exclusion products.
- Klíčová slova
- anaerobe, caecum, chicken microbiota, gene expression, mass spectrometry, metabolism,
- MeSH
- aminokyseliny MeSH
- anaerobní bakterie * metabolismus MeSH
- cékum mikrobiologie MeSH
- kur domácí * mikrobiologie MeSH
- metabolismus sacharidů MeSH
- sekreční systém typu IV MeSH
- střevní mikroflóra * MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- aminokyseliny MeSH
- sekreční systém typu IV MeSH
The concept of competitive exclusion is well established in poultry and different products are used to suppress the multiplication of enteric pathogens in the chicken intestinal tract. While the effect has been repeatedly confirmed, the specific principles of competitive exclusion are less clear. The aim of the study was to compare metabolites in the cecal digesta of differently colonized chickens. Metabolites in the cecal contents of chickens treated with a commercial competitive exclusion product or with an experimental product consisting of 23 gut anaerobes or in control untreated chickens were determined by mass spectrometry. Extensive differences in metabolite composition among the digesta of all 3 groups of chickens were recorded. Out of 1,706 detected compounds, 495 and 279 were differently abundant in the chicks treated with a commercial or experimental competitive exclusion product in comparison to the control group, respectively. Soyasaponins, betaine, carnitine, glutamate, tyramine, phenylacetaldehyde, or 3-methyladenine were more abundant in the digesta of control chicks while 4-oxododecanedioic acid, nucleotides, dipeptides, amino acids (except for glutamate), and vitamins were enriched in the digesta of chickens colonized by competitive exclusion products. Metabolites enriched in the digesta of control chicks can be classified as of plant feed origin released in the digesta by degradative activities of the chicken. Some of these molecules disappeared from the digesta of chicks colonized by complex microbiota due to them being metabolized. Instead, nucleotides, amino acids, and vitamins increased in the digesta of colonized chicks as a consequence of the additional digestive potential brought to the cecum by microbiota from competitive exclusion products. It is therefore possible to affect metabolite profiles in the chicken cecum by its colonization with selected bacterial species.
- Klíčová slova
- cecum, chicken, competitive exclusion, metabolome, microbiota,
- MeSH
- cékum mikrobiologie MeSH
- kur domácí * mikrobiologie MeSH
- kyselina glutamová MeSH
- nemoci drůbeže * mikrobiologie MeSH
- nukleotidy MeSH
- vitamin K MeSH
- vitaminy MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- kyselina glutamová MeSH
- nukleotidy MeSH
- vitamin K MeSH
- vitaminy MeSH
The acute scrotum (AS) in the pediatric population is a medical emergency. AS is usually caused by testicular torsion (TT) and torsion of the appendix testis (TAT). The current study explored which demographic and clinical characteristics can help distinguish between TT and TAT. We analyzed all children ≤16 years who underwent surgical exploration for AS. The patients were divided into Group 1/TT and Group 2/TAT. Ninety patients were included in the study (24 with TT and 66 with TAT). The peak incidence of TT was significantly higher than in the TAT group (p<0.001). Scrotal pain was more prevalent in the TAT group (p=0.02), whereas systemic signs (nausea/vomiting and abdominal pain) affected more frequently the TT patients (p=0.003 and p<0.001, respectively). The duration of symptoms was significantly longer in the TAT group (p<0.001). The duration of symptoms in the TT cohort significantly impacted the testicular salvage (p=0.008). Color Doppler ultrasound (CDUS) findings of absent/decreased testicular blood flow in the affected testis strongly favored the diagnosis of TT (p<0.001). The older age, shorter duration of symptoms, systemic signs, and CDUS findings can help distinguish between the two most common acute scrotum causes.
- Klíčová slova
- Acute scrotum, Children, Testicular torsion, Torsion of the appendix testis,
- MeSH
- apendix * MeSH
- demografie MeSH
- dítě MeSH
- lidé MeSH
- retrospektivní studie MeSH
- testis diagnostické zobrazování MeSH
- torze semenného provazce * diagnóza chirurgie MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- mužské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
Ladd's syndrome is a complex gastrointestinal anomaly that occurs based on congenital intestinal malrotation and leads to midgut volvulus and intestinal obstruction. It is mostly discovered in paediatric patients and presents itself in 90% of cases within the first year of life. It is a rare diagnosis in adult patients. We present the case report of a 19-year-old female patient with chronic abdominal pain and upper-type dyspeptic syndrome. MRI examination of the abdomen showed an abnormal location of the loops of the small intestine predominantly in the right part of the abdomen, caecum and c. ascendens in the epigastrium, duodenojejunal transition compressed and stenotized between upper mesenteric vessels and the aorta, with prestenotic dilatation of the duodenum and stomach and the "whirlpool sign" in mesentery. The patient was indicated for operational procedure and Ladd's operation was successfully performed laparoscopically, where "Ladd's bands" were divided; the procedure also included adhesiolysis, mobilization of the duodenum with its straightening, widening of the base of the mesentery, appendectomy and removal of an incidental solitary mesothelial cyst. A highly differentiated incidental neuroendocrine tumour of the apex of appendix was confirmed by histology. In the discussion, we focus on the rarity of intestinal malrotation in adulthood, clinical manifestation of the disease, diagnostic options and surgical treatment.
- Klíčová slova
- Ladd’s band, bowel obstruction, gut malrotation,
- MeSH
- abnormality trávicího systému * MeSH
- apendix * MeSH
- laparoskopie MeSH
- lidé MeSH
- mladý dospělý MeSH
- nádory apendixu * MeSH
- neuroendokrinní nádory * diagnóza chirurgie MeSH
- střeva MeSH
- volvulus intestini * diagnostické zobrazování chirurgie MeSH
- Check Tag
- lidé MeSH
- mladý dospělý MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- kazuistiky MeSH
Chickens in commercial production are subjected to constant interaction with their environment, including the exchange of microbiota. In this review, we therefore focused on microbiota composition in different niches along the whole line of chicken production. We included a comparison of microbiota of intact eggshells, eggshell waste from hatcheries, bedding, drinking water, feed, litter, poultry house air and chicken skin, trachea, crop, small intestine, and cecum. Such a comparison showed the most frequent interactions and allowed for the identification of microbiota members that are the most characteristic for each type of sample as well as those that are the most widespread in chicken production. Not surprisingly, Escherichia coli was the most widely distributed species in chicken production, although its dominance was in the external aerobic environment and not in the intestinal tract. Other broadly distributed species included Ruminococcus torque, Clostridium disporicum, and different Lactobacillus species. The consequence and meaning of these and other observations are evaluated and discussed.
Estudio recapitulativo- Microbiota de pollos y su entorno en producción comercial. Los pollos en producción comercial están sujetos a una interacción constante con su entorno, incluido el intercambio de microbiota. Esta revisión, por lo tanto, se enfoca en la composición de la microbiota en diferentes nichos a lo largo de toda la línea de producción de pollos. Se incluye una comparación de microbiota de cascarones de huevo intactos, desechos de cascarones de huevos de plantas de incubación, cama, agua potable, alimento, cama, aire de gallinero y piel de pollo, tráquea, buche, intestino delgado y ciego. Tal comparación mostró las interacciones más frecuentes y permitió identificar los miembros de la microbiota más característicos para cada tipo de muestra, así como los más extendidos en la producción de pollos. No en vano, Escherichia. coli fue la especie más ampliamente distribuida en la producción de pollos, aunque su dominio fue en el ambiente aeróbico externo y no en el tracto intestinal. Otras especies ampliamente distribuidas incluyeron Ruminococcus torque, Clostridium disporicum y diferentes especies de Lactobacillus. Se evalúan y discuten la consecuencia y el significado de estas y otras observaciones.
- Klíčová slova
- bedding, cecum, chicken, crop, environment, feed, litter, microbiota,
- MeSH
- cékum MeSH
- drůbež MeSH
- Escherichia coli MeSH
- kur domácí MeSH
- mikrobiota * MeSH
- nemoci drůbeže * MeSH
- RNA ribozomální 16S MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- přehledy MeSH
- Názvy látek
- RNA ribozomální 16S MeSH
Appendiceal tumors and pseudomyxoma peritonei (PMP) are rare tumors. Perforated epithelial tumors of the appendix are the most common source of PMP. This disease is characterized by the presence of mucin of varying degrees of consistency, partially adherent to the surfaces. Appendiceal mucoceles themselves are also very rare and usually their treatment involves only a simple appendectomy. The aim of this study was to provide an up-to-date review of the recommendations for the diagnosis and treatment of these malignancies according to the current guidelines of The Peritoneal Surface Oncology Group International (PSOGI) and the Blue Book of the Czech Society for Oncology of the Czech Medical Association of J. E. Purkyně (ČOS ČLS JEP).
- Klíčová slova
- appendiceal tumors, cytoreduction, hyperthermic intraperitoneal chemotherapy,
- MeSH
- apendektomie MeSH
- apendix * patologie MeSH
- lidé MeSH
- nádory apendixu * diagnóza MeSH
- peritoneální nádory * diagnóza MeSH
- pseudomyxom peritonea * diagnóza MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
Chickens are in constant interaction with their environment, e.g., bedding and litter, and their microbiota. However, how litter microbiota develops over time and whether bedding and litter microbiota may affect the cecal microbiota is not clear. We addressed these questions using sequencing of V3/V4 variable region of 16S rRNA genes of cecal, bedding, and litter samples from broiler breeder chicken flocks for 4 months of production. Cecal, bedding, and litter samples were populated by microbiota of distinct composition. The microbiota in the bedding material did not expand in the litter. Similarly, major species from litter microbiota did not expand in the cecum. Only cecal microbiota was found in the litter forming approximately 20% of total litter microbiota. A time-dependent development of litter microbiota was observed. Escherichia coli, Staphylococcus saprophyticus, and Weissella jogaejeotgali were characteristic of fresh litter during the first month of production. Corynebacterium casei, Lactobacillus gasseri, and Lactobacillus salivarius dominated in a 2-month-old litter, Brevibacterium, Brachybacterium, and Sphingobacterium were characteristic for 3-month-old litter, and Salinococcus, Dietzia, Yaniella, and Staphylococcus lentus were common in a 4-month-old litter. Although the development was likely determined by physicochemical conditions in the litter, it might be interesting to test some of these species for active modification of litter to improve the chicken environment and welfare. IMPORTANCE Despite intimate contact, the composition of bedding, litter, and cecal microbiota differs considerably. Species characteristic for litter microbiota at different time points of chicken production were identified thus opening the possibility for active manipulation of litter microbiota.
- Klíčová slova
- antibiotic resistance, bedding, cecum, chicken, litter, microbiota,
- MeSH
- cékum mikrobiologie MeSH
- kur domácí * mikrobiologie MeSH
- mikrobiota * genetika MeSH
- RNA ribozomální 16S genetika MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- RNA ribozomální 16S MeSH
