[Status and prospects for improving geriatric care in the Russian Federation.]

The data on legal support, resources, structure, staffing of the geriatric service are given. The state of the geriatric service during the COVID-19 pandemic is discussed, as well as plans and directions for development in the post-COVID period. At the end of 2022, the geriatric service in its development reached the following indicators: 1 303 outpatient rooms; 75 geriatric centers; about 2 000 geriatricians trained; 9,2 million citizens older than working age underwent professional examinations; more than 16.0 million citizens older than working age were under dispensary observation; 106,8 thousand citizens older than working age were hospitalized in geriatric beds. It emphasizes the need to organize the provision of multi-level geriatric care and the need to reorganize geriatric care in general.

Optogenetic cytosol acidification of mammalian cells using an inward proton-pumping rhodopsin.

Ion gradients are a universal form of energy, information storage and conversion in living cells. Advances in optogenetics inspire the development of novel tools towards control of different cellular processes with light. Rhodopsins are perspective tools for optogenetic manipulation of ion gradients in cells and subcellular compartments, controlling pH of the cytosol and intracellular organelles. The key step of the development of new optogenetic tools is evaluation of their efficiency. Here, we used a high-throughput quantitative method for comparing efficiency of proton-pumping rhodopsins in Escherichia coli cells. This approach allowed us to show that an inward proton pump xenorhodopsin from Nanosalina sp. (NsXeR) is a powerful tool for optogenetic control of pH of mammalian subcellular compartments. Further, we demonstrate that NsXeR can be used for fast optogenetic acidification of the cytosol of mammalian cells. This is the first evidence of optogenetic cytosol acidification by an inward proton pump at physiological pH values. Our approach offers unique opportunities to study cellular metabolism at normal and pathological conditions and might help to understand the role of pH dysregulation in cellular dysfunctions.

Intestinal mucin-type O-glycans: the major players in the host-bacteria-rotavirus interactions.

Rotavirus (RV) causes severe diarrhea in young children and animals worldwide. Several glycans terminating in sialic acids (SAs) and histo-blood group antigens (HBGAs) on intestinal epithelial cell (IEC) surface have been recognized to act as attachment sites for RV. IECs are protected by the double layer of mucus of which O-glycans (including HBGAs and SAs) are a major organic component. Luminal mucins, as well as bacterial glycans, can act as decoy molecules removing RV particles from the gut. The composition of the intestinal mucus is regulated by complex O-glycan-specific interactions among the gut microbiota, RV and the host. In this review, we highlight O-glycan-mediated interactions within the intestinal lumen prior to RV attachment to IECs. A better understanding of the role of mucus is essential for the development of alternative therapeutic tools including the use of pre- and probiotics to control RV infection.

[Therapeutic possibilities of stimulating reparative neurogenesis in patients with glaucoma who have recovered from a coronavirus infection]. / Terapevticheskie vozmozhnosti stimulyatsii reparativnogo neirogeneza u patsientov s glaukomoi, perenesshikh koronavirusnuyu infektsiyu.

In patients with glaucoma, the neuroplasticity of retinal cells, their axons and neuroglial elements is pathogenetically reduced, including due to a decrease in the concentration of neurotrophic factors. Coronavirus infections contribute to the damage processes, causing apoptosis of retinal and optic nerve cells. In this regard, the possibility of pharmacological stimulation of the production of these peptides through energy potentiation of the cell mitochondria function, reduction of oxidative stress severity and activation of interneuronal transduction system becomes relevant. PURPOSE: This study aimed to conduct a comprehensive diagnosis of the severity of oxidative stress, identify changes in the neuroplasticity and reparative ability of the retina in patients with primary open-angle glaucoma (POAG) who have recovered after a coronavirus infection, and are undergoing therapy with the complex drug Cytoflavin. MATERIAL AND METHODS: The study included 40 patients (mean age 57.2±3.6 years) with advanced POAG compensated by hypotensive agents; all of them recovered from moderate Covid-19 30 to 90 days prior to inclusion in the study. Twenty patients of the main group received therapy with the complex drug Cytoflavin, 20 other patients comprised the control group. In the comparison groups, the concentration of BDNF and CNTF in blood serum (SC) was determined by enzyme-linked immunosorbent assay (ELISA). Overall assessment of oxidative stress was done by high performance liquid chromatography. Studies of the functional activity of the retina were performed using the Tomey EP 1000 electroretinograph according to the standard method. RESULTS AND DISCUSSION: Retinal photosensitivity significantly improved in patients of the main group taking the complex drug Cytoflavin (mD mean after treatment increased from -7.34±0.62 dB to -4.52±0.12 dB (p>0.001), PSD mean decreased from 6.23±0.21dB to 4.27±0.13 dB (p>0.001)); the neural activity of the retina improved according to PERG (the amplitudes of the P50 and N95 components increased from 0.92±0.04 µv to 1.65±0.01 µv and from 1.83±0.06 µv to 2.68±0.01 µv, respectively (p>0.001), the latency of the P50 and N95 components decreased from 53.40±2.51 ms to 49.37±2.22 ms and from 112.40±5.23 ms to 107.4±8.11ms, respectively (p>0.001); the concentration of BDNF increased (from 18.65±5.32 ng/ml to 20.23±4.05 ng/ml (p>0.001)) and the concentration of CNTF in the blood serum decreased (from 3.99±0.37 pg/ml to 1.85±0.02pg/ml (p>0.001)), the severity of oxidative stress decreased (the indicator of oxidative stress decreased by 1.4 times after treatment p>0.001) and the content of antioxidant protection indicators increased: the indicator of antioxidant protection of blood serum increased by 1.4 times, the concentration of superoxide dismutase - by 1.9 times (p>0.001), glutathione peroxidase - by 1.4 times (p>0.001), coenzyme Q10 - by 4.5 times (p>0.001). CONCLUSION: The obtained data can be used to determine the risk of progression of glaucomatous optic neuropathy in patients with glaucoma who have had a coronavirus infection.

[Efficacy of newly developed kombucha-based specialized food product for treatment of constipation-predominant irritable bowel syndrome].

According to studies, the prevalence of constipation in the population can reach 27% due to the low intake of dietary fiber. Increasing dietary fiber intake can improve bowel movements. The aim of the study was to assess the efficacy of a non-alcoholic fermented pasteurized kombucha drink enriched with inulin and vitamins in patients with constipation-predominant irritable bowel syndrome (IBS). Material and methods. The study (NCT05164861) was approved by Local Ethics Committee and enrolled subjects with IBS (according to ROME IV). The subjects were randomized to receive either 220 ml of a non-alcoholic drink, based on pasteurized kombucha (KG), enriched with inulin (1.15 g/100 ml) or 220 ml water (control group, CG), for 10 days. Standard examination included evaluation of stool frequency (bowel movements per day), stool form (with the Bristol stool scale) and evaluation of concomitant symptoms (abdominal pain/discomfort, abdominal fullness, bloating, and feeling of incomplete bowel emptying) with the use of 5-point Likert scale before (BL) and 10 days after the start of intervention (EOT). Using visual analog scales (VAS), the palatability of the studied food was assessed at the beginning and end of the observation period. Results. Significant increase of stool frequency was found at the EOT compared to BL in KG (n=20), Mean±SD: 0.60±0.31 to 0.85±0.19 times/day; p=0.004, while there was no change in CG (n=20): 0.63±0.33 vs 0.72±0.28, p=0.6. Mean values of stool scale form increased in KG (3.0±1.2 to 4.4±1.0, p=0.001), while remained unchanged in CG (2.9±1.2 vs 3.4±1.2, p=0.6). Mean values of the Bristol stool scale in KG and CG differed significantly at EOT (p=0.018). Significant decrease in mean values of incomplete bowel emptying feeling was found in KG (1.88±0.78 at BL vs 1.41±0.56 points at EOT, p=0.015), but not in the control group. There were no statistically significant differences between patient's reports of the studied groups for other symptoms (bitterness and dryness in the mouth, heartburn, nausea, abdominal pain and heaviness in the stomach after eating). Conclusion. The effectiveness of a pasteurized fermented non-alcoholic drink based on kombucha enriched with inulin has been proven by reducing the intensity of complaints significant for constipation, normalizing the frequency and consistency of stools.

Glycan-mediated interactions between bacteria, rotavirus and the host cells provide an additional mechanism of antiviral defence.

Limited efficacy of rotavirus (RV) vaccines in children in developing countries and in animals remains a significant problem necessitating further search for additional approaches to control RV-associated gastroenteritis. During cell attachment and entry events, RV interacts with cell surface O-glycans including histo-blood group antigens (HBGAs). Besides modulation of the protective immunity against RV, several commensal and probiotic bacteria were shown to express HBGA-like substances suggesting that they may affect RV attachment and entry into the host cells. Moreover, some beneficial bacteria have been shown to possess the ability to bind host HBGAs via sugar specific proteins called lectins. However, limited research has been done to evaluate the effects of HBGA-expressing and/or HBGA-binding bacteria on RV infection. The aim of this study was to investigate the ability of selected commensal and probiotic bacteria to bind different RV strains via HBGAs and to block RV infection of IPEC-J2 cells. Our data indicated that Gram-negative probiotic Escherichia coli Nissle 1917 (E. coli Nissle 1917) and commensal Gram-positive (Streptococcus bovis and Bifidobacterium adolescentis) and Gram-negative (Bacteroides thetaiotaomicron, Clostridium clostridioforme and Escherichia coli G58 (E. coli G58) bacteria of swine origin expressed HBGAs which correlated with their ability to bind group A and C RVs. Additionally, Gram-positive E. coli 1917 and E. coli G58 demonstrated the ability to block RV attachment onto IPEC-J2 cells. Taken together, our results support the hypothesis that physical interactions between RVs and HBGA-expressing beneficial bacteria may limit RV replication.

[Enzymatic activity of paraoxonase depending on polymorphism Q192R of the PON1 gene in patients with primary open-angle glaucoma]. / Fermentativnaya aktivnost' paraoksonazy v zavisimosti ot polimorfizma Q192R gena PON1 u patsientov s pervichnoi otkrytougol'noi glaukomoi.

It is believed that one of the main blood enzymes that hydrolyzes oxidized lipids incorporated in lipoproteins is the calcium-dependent hydrolase of paraoxonase 1, which has a significant antioxidant effect depending on the polymorphism of the PON1 gene. PURPOSE: To genotype patients with primary open-angle glaucoma (POAG) by the Q192R polymorphism of the PON1 gene in order to identify their genetic predisposition to dyslipidemia and atherosclerosis, as well as to determe the possibility of correcting the reduced activity of the PON1 enzyme in the examined individuals by the complex drug Cytoflavin. MATERIAL AND METHODS: The study included 25 men with advanced POAG, IOP compensated by hypotonic agents, and 20 volunteers without POAG (mean age 63.0±5.4 years). All subjects underwent genotyping by the Q192R polymorphism of the PON1 gene using an analyzer. PON1 activity was assessed by the rate of nitrophenol formation when paraoxone diluted in acetone was added to the blood plasma. At the second stage, patients (of different phenotypes) were prescribed the complex drug Cytoflavin. RESULTS: Homozygous carriers of the 192R allele were found to have significantly lower levels of PON1 activity than homozygous carriers of the Q192 allele. Carriage of the 192R allele may determine an increased risk of atherosclerotic injury in patients with POAG, especially in cases with high levels of atherogenic blood lipoproteins, low levels of high-density lipoproteins, or high levels of peroxidized lipids in the blood. The drug Cytoflavin showed a positive therapeutic effect on oxidative stress and hypercholesterinemia in POAG patients. CONCLUSION: These findings can be used to determine the atherogenicity of lipoproteins and the progression of glaucomatous optic neuropathy and to optimize the therapy of PAHO.

[Time perspective, sleep and wellbeing of the elderly during COVID-19 pandemic.]

The purpose of this study was to analyze the association between the time perspective and the psychophysiological state of the elderly during the pandemic COVID-19. 433 residents from 11 Russian cities aged 60,8±9,8 years (range - 50-94 years, women - 78,7%) took part in the study. During the online survey, each participant of the study provided personal data (place of residence, sex, age, height, and weight) and completed the Zimbardo Time Perspective Inventory, the Munich Chronotype Questionnaire, the Beck Depression Inventory and the Yale Food Addiction Scale. It was found that elderly people with a balanced time perspective had the lowest level of depression during the pandemic COVID-19 and less expressed sleep inertia at work days, while those with a past negative time perspective had the highest level of depression, high frequency of detection of food addiction and low sleep efficiency. The other types of time perspective (past positive, present hedonistic, present fatalistic and future) had intermediate values of indicators between these two extreme options. Thus, the conducted studies have shown that elderly people with a balanced time perspective showed the highest level of resistance to psychoemotional stress caused by the pandemic COVID-19.

[Association of nutritional patterns and arterial hypertension in Russia: does it exist?]

AIM: To evaluate nutritional patterns in patient with arterial hypertension (AH) compared to the control group without elevated blood pressure. MATERIALS AND METHODS: Retrospective search for unique records of the patients aged 1875 y.o. with complete data on usual nutrition with food frequency methods who had no mentions of diabetes mellitus, food intolerance or allergies, and history of major abdominal surgery, as well as signs of secondary reasons of AH. Nutritional patterns were assessed with the use of healthy eating pyramid principles. Ststistical analysis was performed with the use of SPSS 13.0 for Windows software (SPSS Inc., USA). RESULTS: The data of 711 patients were available for the final analysis (595 of them in AH group). Both groups consumed lower compared to the recommended amounts of fruits, dairy and higher amounts of meat. Those with AH consumed larger amounts of vegetables (1.130.74 compared to the values of healthy eating pyramid vs 0.940.63 in the control group; p=0.004), fruits (0.800.66 vs 0.520.57; p=0.001), meat (1.851.05 vs 1.620.91; p=0.002) and fats (0.770.60 vs 0.490.55; p=0.001). On the other hand, there were lower rates of consumption of sugars, and confectionaries in the structure of nutritional patterns in patients with AH compared to the control group: (0.350.44 of the healthy eating pyramid in AH vs 1.930.98, in the control group; p=0.0001). CONCLUSION: Nutritional patterns of patients with arterial hypertension significantly differ compared to the control group. The obtained data may be used for diet modification in patients with arterial hypertension.

Reduced rotavirus vaccine efficacy in protein malnourished human-faecal-microbiota-transplanted gnotobiotic pig model is in part attributed to the gut microbiota.

The low efficacy of human rotavirus (HRV) vaccines in low- and middle-income countries (LMIC) remains a major challenge for global health. Protein-calorie malnutrition (kwashiorkor) affects the gut microbiota and compromises immune development, leading to environmental enteropathy, vaccine failures, and increased susceptibility to enteric diseases in young children. Relationship between diet and reduced vaccine efficacy in developing countries is not well established; therefore, we investigated the interconnections between the host-microbiota-nutrition-HRV vaccine using HRV-vaccinated, human infant faecal microbiota (HIFM)-transplanted neonatal gnotobiotic pigs fed with a protein deficient or sufficient diet. The microbiota from faecal, intestinal (duodenum, ileum, jejunum, and colon), and systemic tissue (liver, spleen, and mesenteric lymph node [MLN]) samples was analysed before and after HRV challenge using MiSeq 16S rRNA sequencing. Overall, microbiota from deficient fed HIFM pigs displayed, compared to the sufficient group, significantly higher Shannon index, especially in the faeces and lower intestines; higher level of Proteus and Enterococcus, and lower level of Bifidobacterium, Clostridium, and Streptococcus in the three types of samples collected (P<0.05); and higher unique operational taxonomic units (OTUs), especially in the systemic tissues. Further, the multivariate analysis between microbiota and immunologic data showed that 38 OTUs at the genus level correlated (r2≤0.5 or ≥-0.5; P<0.05) with at least one host immune response parameter (regulatory [Tregs and transforming growth factor-ß], effectors [interferon (IFN)-γ+ CD4+ and CD8+ T cells, IFN-γ and interleukin (IL)-12], and inflammatory [tumour necrosis factor-α, IL-17 and IL-22]) and with opposite trends between diet groups. Differences described above were increased after HRV challenge. We demonstrated that a protein deficient diet affects the composition of the gut microbiota and those changes may further correlate with immune responses induced by HRV and perturbed by the deficient diet. Thus, our findings suggest that the reduced efficacy of HRV vaccine observed in Gn pig model is in part attributed to the altered microbiota composition.

[Structural and functional features of peripheral vasculature in patients with glaucoma]. / Strukturno-funktsional'nye osobennosti perifericheskikh sosudov pri glaukome.

PURPOSE: To study the reactivity of the vascular endothelium and the elastic properties of the upper and lower extremities, and assess the vascular innervation effect of Cytoflavin in patients with stable and rapidly progressive primary open-angle glaucoma (POAG). MATERIAL AND METHODS: The study included 67 patients with POAG (mean age 66.3±1.5 years), among them 31 with stable and 36 with rapidly progressive glaucoma. During the first stage of the study, the reactivity of the vascular endothelium was assessed with reactive hyperemia test; the viscoelastic properties of the upper and lower extremities were evaluated using volumetric sphygmomanometry. For the second stage of the study, patients were divided into the main group (n=20) that received intravenous injections of 10 ml Cytoflavin with 200 ml of 5% glucose solution for 10 days and then 2 tablets twice a day for 60 days, and the control group (n=16). RESULTS: The function of the vascular endothelium was significantly reduced in patients with rapidly progressive POAG. Correlation analysis revealed a negative correlation between the flow-dependent vasodilation (FDV), and the duration of POAG and initial diameter of the brachial artery (r=0.5, p<0.05 and r=0.6, p<0.05, respectively). Pathological response of vessel endothelium was detected in 88% of patients with stable and 96% of patients with rapidly progressive POAG. Cytoflavin was found to have positive effects on the endothelium in patients with POAG. CONCLUSION: The obtained data can be used for identification of risk factors for rapid POAG progression and optimization of its treatment.

[Association of thermal food processing methods and small intestinal bacterial overgrowth syndrome].

Small intestinal bacterial overgrowth (SIBO) is a widespread disease which antibiotic therapy is not effective enough and the relapse rate is high. Microbiota is dependent on dietary pattern of the patient and specific nutrients, therefore the diversity of dietary patterns may be one of the major factor promoting SIBO or its relapses after treatment. The aim: to compare the patterns of thermal food processing methods in patients with and without SIBO. Material and methods. We performed retrospective single center database search to identify unique depersonalized records of patients with SIBO and the data of lactulose breath test and nutritional assessment with the use of 24-hours dietary recall. Inclusion criteria were complete data on patient's demography, adequate data of nutritional assessment and the lactulose breath test, absence of previous history of SIBO treatment in a special form of the database. In accordance with the results of lactulose breath test, patients were assigned into groups with the presence of SIBO with excess production of hydrogen (H2), methane (CH4), both gases (CH4-H2) or without SIBO (control group). According to the data of 24 h dietary recall, we divided all dishes and products consumed by a patient to 6 categories (Cat) depending on thermal food processing method: those that were not processed (raw) (Cat-r), boiled (Cat-bl), fried (Cat-f), stewed (Cat-s), baked in the oven (Cat-bk) or grilled (Cat-g). To analyze the structure of thermal food processing, we divided the weight of all products or dishes that underwent specific method of processing to the total weight of the food eaten. We did not take into the account the weight of thermally stable components like water and salt. The pattern of thermal food processing within each patients group was obtained as a quotient of the total percentage (by weight) of the food processed with the certain method by the number of patients in the group. Results and discussion. The data of 1108 patients were available for the final analysis: 602 patients in the SIBO-H2 group, 140 in the SIBO-CH4 group, 248 in the SIBO-CH4-H2 group, and 118 patients in the control group. The distribution of thermal food processing categories was in patients with SIBO-H2 as follows: Cat-r - 45.8±17.3%, Cat-bl - 31.9±15.7%, Cat-s - 3.5±7.7%, Cat-f - 6.3±10.4%, Cat-bk - 12.2±10.2%, Cat-g - 0.3±3.3%); in patients with SIBO-CH4: Cat-r - 47.9±17.4%, Cat-bl - 29.6±15.6%, Cat-s - 4.4±7.6%, Cat-f - 5.8±9.8%, Cat-bk - 12.3±10.4%, Cat-g - 0,2±2,7%; in patients with SIBO-CH4-H2: Cat-r - 45.6±16.3%, Catbl - 31.5±16.2%, Cat-s - 4.0±8.0%, Cat-f - 5.1±9.3%, Cat-bk - 13.4±10.8%, Cat-g - 0.4±2.3%. Similar results were obtained in the control group (Cat-r - 44.7±17.0%, Cat-bl - 32.6±16.5%, Cat-s - 2.7±6.0%, Cat-f - 5.5±8.0%, Cat-bk - 14.2±10.6%, Cat-g - 0.3±2.0%). There were no significant differences between the SIBO and control groups by mean percentage of raw, boiled, stewed, fried, baked and grilled food intake. Conclusion. We found no association between thermal food processing patterns and SIBO. It seems that thermal food processing patterns has no influence on SIBO and its variants.

[The role of dietary diversity in the formation of syndrome intestinal bacterial overgrowth].

Small intestinal bacterial overgrowth (SIBO) is a widespread disease characterized by a significant decrease of the quality of life. Antibiotic treatment of SIBO is usually effective, however, the recurrence rate is high. Microbiota is dependent on dietary pattern of the patient and specific nutrients, therefore the diversity of dietary patterns may be one of the major factor promoting SIBO or its relapses after treatment. The aim of the study was to compare nutritional diversity in patients with SIBО-H2 and in healthy controls. MATERIAL AND METHODS: Оne thousand twenty three patients with suspected SIBО were examined. Hydrogen-methane breath test with lactulose was performed in 973 patients, the results of which identified groups with SIBO-H2 (n=522), with SIBO-CH4 (n=340) and without signs of SIBO (n=108). Data on food intake was collected with 24 h recall from all participants. Dietary diversity was assessed using method of calculation of unique values (count base diversity) for 11 groups of food: cereals, meat and eggs, fish and non-fish seafood, fat containing products, dairy products, nuts, vegetables, fruits and berries, confectionery, drinks, sauces and spices. The pattern of food diversity for each patient was obtained by counting the items in each of the studied food groups. Comparison of the mean values of the number of items in each of the studied food groups was used to compare food diversity in patients with and without SIBО-H2. RESULTS AND DISCUSSION: A comparison of nutritional diversity in patients with SIBO-H2 revealed a lower count base diversity in the groups of dairy products (2.70±1.37 vs 3.19±1.34, p<0.001), vegetables (5.50±2.22 vs 6.29±1.90, p<0.001), fruits (1.54± 1.38 vs 1.99±1.69, p=0.018) in compare with controls. Count base diversity in grains, meats, fishes, fat products, nuts and legumes and sweets did not demonstrate significant differences. CONCLUSION: Significant differences in the diversity of dietary patterns in patients with SIBО were found in dairy products, vegetables and fruits and berries. The obtained data may be used to develop diet for SIBO patients additionally to the treatment and prevention of its relapses.

[Features of nutrition pattern of patients with small intestinal bacterial overgrowth resistant to therapy].

Small intestinal bacterial overgrowth (SIBO) is a widespread disease characterized by a significant decrease in the quality of life. Antibiotic treatment with SIBO is not effective enough and the recurrence rate is high. Long-term dietary patterns can shift the composition of the microbiota. The aim of the study was to compare the pattern of nutrition of patients with SIBО, resistant to therapy and cured patients. Materials and methods. SIBO H2 has been identified in 458 patients using hydrogenmethane breath test with lactulose, and therapy with intestinal antiseptics and control breath test after 2 months was prescribed. 24 hour recalls or three-day food records were collected from all participants. The photographs were used to estimate the size of the portions eaten. According to food composition and portion all dishes in food diary were converted into constituent products by food groups, which were summed by weight per day and compared with the norms of consumption of the pyramid of healthy nutrition for a given caloric intake. The study compared dietary patterns of patients with resistance to the therapy of SIBO and those who had successful therapy. Results and discussion. Control of the hydrogen content in the exhaled air was performed only in 79 re-appeared patients, 38 (48.9%) of them in 2 months after therapy revealed the presence of SIBO H2>20 ppm. A comparison of the nutrition of these patients showed that patients resistant to therapy had higher consumption of buckwheat (0.41±0.47 vs 0.14±0.35 relative to the rate of consumption of cereals, p<0.001) and millet (0.036±0.11 vs 0.007±0.021, p=0.047), poultry meat (0.80±0.64 vs 0.54±0.62, p=0.01) and butter (0.54±0.24 vs 0.39±0.22, p<0.01). The diet of patients with resistant to SIBO therapy was also сharacterized by a lower consumption of mono- and disaccharides (75.2±32.7 vs 95.5±41.5 g/day; p=0.015) and cottage cheese (0.07±0.08 vs 0.17±0.19, p=0.018). Consumption of fruits and vegetables did not have significant differences. Conclusion. Treatment is ineffective in roughly half the patients with SIBO H2. According to the results of the study, significant differences in the nutrition pattern of patients resistant to SIBO therapy with respect to the consumption of cereals, poultry, butter, added sugars and cottage cheese were established. The obtained data may be used to develop dietetic maintenance of SIBO therapy and prevention of its relapses.

[Features of diagnosis and clinical picture of common dermatoses in the elderly and senile age.]

The review article presents data on common dermatoses in elderly patients. At present, this topic is practically not discussed in the Russian geriatrics. The urgency of the problem is increasing due to the increase in life expectancy and the deterioration in the availability of specialized care (in particular, dermatological care), especially for elderly patients. The review discusses a number of clinical cases in elderly patients. This article is addressed to geriatrics, general practitioners, general practitioners (family doctors).

[Association of food patterns with different forms of small intestinal bacterial overgroth syndrome and treatment efficacy].

AIM: To assess food patterns in patients with different types of SIBO and their impact onto the course and treatment outcomes. MATERIALS AND METHODS: The data of 988 patients who signed informed consent surved as a source data. On the basis of lactulose breath test (LBT; GastroCH4eck, Bedfont, UK), the patients were selected into one of the studied groups: SIBO-H2, SIBO-CH4, SIBO-CH4-H2 and control. Twenty - four hours food recall test was used to analyze nutritional habits. In patients with SIBO-H2, standard treatment with Tilichinol 100 mg/Tilbrochinol 200 mg (Intetrix, Beaufour-Ipsen International, France) 2 caps BID for 10 days) was provided. Efficacy of treatment was assessed on the bass of the result of LBT 2 month after treatment completion. Mann-Whitney T test (Statistica 10, StatSoft, USA) was used to compare nutritional patterns in patients with or without SIBO, in different types of SIBO and in accordance to the results of treatment. RESULTS AND DISCUSSION: Nine hundred eighty eight patients were enrolled. On the basis of hydrogene breath test they were divided into 4 main groups: SIBO of hydrogen - producing flora (SIBO-H2, n=526), methane - producing flora (SIBO-CH4, n=129), SIBO with hyperproduction of methane and hydrogene (SIBO-CH4-H2, n=225). The control group consisted of 108 patients with no no excessive gas production on LBT. In contrast to controls, nutritional patterns of patients with SIBO were characterized by low dietary fiber and amount of red meat dishes in the rations. Those with SIBO-CH4 consumed more fruits (p=0.03), vegetables (p=0.003), and fish (p=0.026), compared to those with other variants of SIBO and the control group. Nutritional patterns of SIBO-H2 group were characterized by larger amount of poultry meat consumption (p=0.026) compared to other SIBO groups and controls. In SIBO-H2 "cured" group greater amounts of buckwheat (p.

[Methanobrevibacter smithii in irritable bowel syndrome: a clinical and molecular study].

AIM: To assess the role of Methanobrevibacter smithii in patients with irritable bowel syndrome associated with small intestinal bowel overgrowth. MATERIALS AND METHODS: Sixty - seven patients with IBS according to Rome IV were enrolled into the study in whom hydrogen breath test was performed. Thirty - two healthy subjects with negative breath test was used as a control. All IBS symptoms assessed daily with 5 grade Lykert scale for 7 days, stool was assessed by Brystol stool scale. M. smithii was confirmed in stool samples by PCR. RESULTS AND DISCUSSION: In 67 IBS patients CH4 overproduction was found in 32 (47.7%), H2 overproduction in 31 (46.2%) and normal values in 4 (5.9%) by hydrogen breath test. M. smithii was confirmed by stool PCR in all patients with CH4 overproduction. Severity and prevalence of main clinical features of IBS were similar in both SIBO groups but were significantly higher than in control (p.

Effect of antibiotic, probiotic, and human rotavirus infection on colonisation dynamics of defined commensal microbiota in a gnotobiotic pig model.

We developed a gnotobiotic (Gn) pig model colonised with defined commensal microbiota (DMF) to provide a simplified and controlled system to study the interactions between intestinal commensals, antibiotics (ciprofloxacin, CIP), probiotics (Escherichia coli Nissle 1917, EcN) and virulent human rotavirus (VirHRV). The DMF included seven gut commensal species of porcine origin that mimic the predominant species in the infant gut. Gn piglets were divided into four groups: DMF control (non-treated), DMF+CIP (CIP treated), DMF+CIP+EcN (CIP/EcN treated), DMF+EcN (EcN treated) and inoculated orally with 105 cfu of each DMF strain. The pig gut was successfully colonised by all DMF species and established a simplified bacterial community by post-bacteria colonisation day (PBCD) 14/post-VirHRV challenge day (PCD) 0. Overall, Bifidobacterium adolescentis was commonly observed in faeces in all groups and time points. At PCD0, after six days of CIP treatment (DMF+CIP), we observed significantly decreased aerobic and anaerobic bacteria counts especially in jejunum (P<0.001), where no DMF species were detected in jejunum by T-RFLP. Following HRV challenge, 100% of pigs in DMF+CIP group developed diarrhoea with higher diarrhoea scores and duration as compared to all other groups. However, only 33% of pigs treated with EcN plus CIP developed diarrhoea. EcN treatment also enhanced the bacterial diversity and all seven DMF species were detected with a higher proportion of Bifidobacterium longum in jejunum in the DMF+CIP+EcN group on PBCD14/PCD0. Our results suggest that EcN increased the proportion of B. longum especially in jejunum and mitigated adverse impacts of antibiotic use during acute-infectious diarrhoea. The DMF model with a simplified gut commensal community can further our knowledge of how commensals and probiotics promote intestinal homeostasis and contribute to host health.