In this study, molecular composition of hamster and rat blood was studied by gel permeation chromatography under natural (NH) and artificial hibernation (AH). The control group was represented by 5 fractions of molecules in hamsters and 7 in rats. The areas under peaks of the fractions similar in molecular weight in hamsters and rats were larger in rats. NH was characterized by appearance of new fractions (1,350, 2,350, and 6,350 Da) and an increase in areas under peaks of the control fractions (1,140 and 1,980 Da). Artificial hibernation in rats led to an increase in areas under peaks of 1,140 Da fraction, a decrease in that of 530 Da, and disappearance of 1290 Da, as well as the appearance of new fractions (650, 830, 950, 2350, and 5110 Da). Two hrs of later AH, the areas under peaks of 1,140 and 1,520 Da fractions were greater and that of 530 Da was lesser; 650, 2,350 and 5,110 Da fractions disappeared, 1,290 Da reappeared and new fraction of 4,030 Da appeared. New fractions of 5,820 and 6,530 Da were found 24 hrs later. In hamsters under AH, the areas under peaks of 1,140, 1,600, and 3,330 Da increased; as well as a new peak in 5,280 Da appeared, both in the control rats and those in 24 hrs after AH.
{"title":"Gel Chromatographic Examination of Serum of Rats and Hamsters Under Artificial and Natural Hibernation","authors":"O. Shylo, V. Lomako, O. Semenchenko","doi":"10.15407/cryo31.03.191","DOIUrl":"https://doi.org/10.15407/cryo31.03.191","url":null,"abstract":"In this study, molecular composition of hamster and rat blood was studied by gel permeation chromatography under natural (NH) and artificial hibernation (AH). The control group was represented by 5 fractions of molecules in hamsters and 7 in rats. The areas under peaks of the fractions similar in molecular weight in hamsters and rats were larger in rats. NH was characterized by appearance of new fractions (1,350, 2,350, and 6,350 Da) and an increase in areas under peaks of the control fractions (1,140 and 1,980 Da). Artificial hibernation in rats led to an increase in areas under peaks of 1,140 Da fraction, a decrease in that of 530 Da, and disappearance of 1290 Da, as well as the appearance of new fractions (650, 830, 950, 2350, and 5110 Da). Two hrs of later AH, the areas under peaks of 1,140 and 1,520 Da fractions were greater and that of 530 Da was lesser; 650, 2,350 and 5,110 Da fractions disappeared, 1,290 Da reappeared and new fraction of 4,030 Da appeared. New fractions of 5,820 and 6,530 Da were found 24 hrs later. In hamsters under AH, the areas under peaks of 1,140, 1,600, and 3,330 Da increased; as well as a new peak in 5,280 Da appeared, both in the control rats and those in 24 hrs after AH.","PeriodicalId":53457,"journal":{"name":"Problems of Cryobiology and Cryomedicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42075106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Repin, Yu.V. Chyzh, L. Marchenko, Tetyana Govorukha, Oleksandr Brusentsov
Here, we have studied the impact of administration of rat placental cryoextract (PCE), drug blockade of the renin-angiotensin-aldosterone system (RAAS) with enalapril and spironolactone and their combination on the rat kidney tissue structure and excretory function at different stages of chronic renal failure (CRF) development using the glycerol model. In 3 weeks after glycerol introduction, the animals from all the groups showed low values of glomerular filtration rate, impaired blood flow in renal cortex, tubular epithelial dystrophy, inflammation and edema of interstitium, indicating the onset of CRF development. Tubulo-interstitial nephritis and nephrosclerosis were dominated in untreated rats 16 weeks later. The use of RAAS drug blockade, as well as a comprehensive therapy with RAAS blockers and placental cryoextract stopped the inflammatory processes in renal tissue, restored blood circulation and normalized excretory function, which persisted for up to 16 weeks of observation.
{"title":"Placental Cryoextract and Renin-Angiotensin-Aldosterone System Blockade Mitigate Renal Failure in Rats","authors":"M. Repin, Yu.V. Chyzh, L. Marchenko, Tetyana Govorukha, Oleksandr Brusentsov","doi":"10.15407/cryo31.03.223","DOIUrl":"https://doi.org/10.15407/cryo31.03.223","url":null,"abstract":"Here, we have studied the impact of administration of rat placental cryoextract (PCE), drug blockade of the renin-angiotensin-aldosterone system (RAAS) with enalapril and spironolactone and their combination on the rat kidney tissue structure and excretory function at different stages of chronic renal failure (CRF) development using the glycerol model. In 3 weeks after glycerol introduction, the animals from all the groups showed low values of glomerular filtration rate, impaired blood flow in renal cortex, tubular epithelial dystrophy, inflammation and edema of interstitium, indicating the onset of CRF development. Tubulo-interstitial nephritis and nephrosclerosis were dominated in untreated rats 16 weeks later. The use of RAAS drug blockade, as well as a comprehensive therapy with RAAS blockers and placental cryoextract stopped the inflammatory processes in renal tissue, restored blood circulation and normalized excretory function, which persisted for up to 16 weeks of observation.","PeriodicalId":53457,"journal":{"name":"Problems of Cryobiology and Cryomedicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43888397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Volkova, Dmytro Vvedensky, M. Yukhta, Аnatoliy Goltsev
{"title":"Influence of Cryopreservation on Phenotype and Functional Properties of Multipotent Mesenchymal Stromal Cells Derived From Different Sources","authors":"N. Volkova, Dmytro Vvedensky, M. Yukhta, Аnatoliy Goltsev","doi":"10.15407/cryo31.03.268","DOIUrl":"https://doi.org/10.15407/cryo31.03.268","url":null,"abstract":"","PeriodicalId":53457,"journal":{"name":"Problems of Cryobiology and Cryomedicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46052486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
O. Gulevsky, N. Moisieieva, O. Gorina, Yu. S. Akhatova
This paper presents the results of comparative studies of the impact of the low molecular weight (below 5 kDa) cattle cord blood fraction (CBF) and the comparator drug Actovegin on tissue regeneration after skin cryoablation in rats. Here, a local contact cryoexposure was shown to result not only in destruction of all skin layers, but secondary ischemic damage to deeper and adjacent tissues as well. The use of an injection solution of CBF as a therapy for simulated cryolesion proved its pronounced wound healing effect, manifested in accelerated reparation, improved trophicity in an injured area due to hypervascularization and prevention of sclerotic processes. The introduction of CBF and Actovegin to rats accelerated the normalization of clinical blood parameters (RBC and WBC counts, alkaline phosphatase activity) in shorter terms as compared with the control. The obtained effect may be compared with Actovegin action.
{"title":"Comparative Evaluation of Wound Healing Effect of Cord Blood Low Molecular Weight Fraction (Below 5 kDa) and Actovegin Drug in Skin Cryolesions","authors":"O. Gulevsky, N. Moisieieva, O. Gorina, Yu. S. Akhatova","doi":"10.15407/cryo31.02.116","DOIUrl":"https://doi.org/10.15407/cryo31.02.116","url":null,"abstract":"This paper presents the results of comparative studies of the impact of the low molecular weight (below 5 kDa) cattle cord blood fraction (CBF) and the comparator drug Actovegin on tissue regeneration after skin cryoablation in rats. Here, a local contact cryoexposure was shown to result not only in destruction of all skin layers, but secondary ischemic damage to deeper and adjacent tissues as well. The use of an injection solution of CBF as a therapy for simulated cryolesion proved its pronounced wound healing effect, manifested in accelerated reparation, improved trophicity in an injured area due to hypervascularization and prevention of sclerotic processes. The introduction of CBF and Actovegin to rats accelerated the normalization of clinical blood parameters (RBC and WBC counts, alkaline phosphatase activity) in shorter terms as compared with the control. The obtained effect may be compared with Actovegin action.","PeriodicalId":53457,"journal":{"name":"Problems of Cryobiology and Cryomedicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49669761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vladyslav Babiychuk, V. Aidarova, I. Lomakin, O. Kudokotseva, Roy Nataliia, O. Naumova, О. Protsenko
The study examines the morphological changes that occur in brain of SHR rats on the background of developing hypertensive dyscirculatory encephalopathy (DE), complicated by chronic alcohol intoxication (CAI). CAI has been proven to potentiate the progressive aging of brain in rats with hypertensive DE by aggravating its course and to lead to the development of DE of mixed genesis. The effectiveness of a single and combined use of rhythmic craniocerebral hypothermia (rCCH) and the introduction of cryopreserved cord blood nucleated cells (cCBNCs) to reduce the progressive vascular lesions of brain and the effects of chronic ischemia in animals with DE of mixed genesis. It has been proven that the combined use of rCCH and cCBNCs in the rats with a mixed DE had a more pronounced positive effect on morphological structure of brain tissues and vessels than their single use. There was a further decrease in the signs of dystrophic, destructive and pathologically altered compensatory adaptive processes in brain on the background of a significant decrease in neuroglial index, stimulation of angiogenesis, complete or partial absence of signs of smooth muscle cell hyperplasia, acute hemorrhages and ischemic strokes, spasms of arterial vessels’ walls and plethory in veins, that contributed to restoration of brain microhemocirculation and cytoarchitectonics.
{"title":"Influence of Hypothermia and Cell Therapy on Structural Changes in Brain Tissues of Rats with Dyscirculatory Encephalopathy of Mixed Genesis","authors":"Vladyslav Babiychuk, V. Aidarova, I. Lomakin, O. Kudokotseva, Roy Nataliia, O. Naumova, О. Protsenko","doi":"10.15407/cryo31.02.151","DOIUrl":"https://doi.org/10.15407/cryo31.02.151","url":null,"abstract":"The study examines the morphological changes that occur in brain of SHR rats on the background of developing hypertensive dyscirculatory encephalopathy (DE), complicated by chronic alcohol intoxication (CAI). CAI has been proven to potentiate the progressive aging of brain in rats with hypertensive DE by aggravating its course and to lead to the development of DE of mixed genesis. The effectiveness of a single and combined use of rhythmic craniocerebral hypothermia (rCCH) and the introduction of cryopreserved cord blood nucleated cells (cCBNCs) to reduce the progressive vascular lesions of brain and the effects of chronic ischemia in animals with DE of mixed genesis. It has been proven that the combined use of rCCH and cCBNCs in the rats with a mixed DE had a more pronounced positive effect on morphological structure of brain tissues and vessels than their single use. There was a further decrease in the signs of dystrophic, destructive and pathologically altered compensatory adaptive processes in brain on the background of a significant decrease in neuroglial index, stimulation of angiogenesis, complete or partial absence of signs of smooth muscle cell hyperplasia, acute hemorrhages and ischemic strokes, spasms of arterial vessels’ walls and plethory in veins, that contributed to restoration of brain microhemocirculation and cytoarchitectonics.","PeriodicalId":53457,"journal":{"name":"Problems of Cryobiology and Cryomedicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47449579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tetiana Dyubko, V. Pivovarenko, V. Chekanova, Yuliya Pakhomova, Yana Gvozdiuk, A. Kompaniets, A. Tatarets
In this paper we have studied the interaction of the mixtures of glycerol (GL) and its oxyethylated derivatives (OEG) with polymerization degree n = 3, 25 and 30 with dimethylacetamide (DMAc) in aqueous solution using 3-hydroxy-4´-(N, N dimethylaminoflavone) fluorescent probe. The combination of GL and its oxyethylated derivatives with DMAc was found to reduce the membranotropy of certain cryoprotective agents, forming a mixture. The combination of both GL and its low molecular weight derivative (OEGn=3) with DMAc reduced the membranotropy of the latter. At the same time, combining GL derivatives of high molecular weight (OEGn=25 and OEGn=30) with DMAc diminished the membranotropy of OEG. The OEGn=30 at concentrations above 1 wt.% was shown to form the micellar-type structures or micellar associates in aqueous solution. This enabled suggesting the membranotropic ability of high molecular weight OEG associates to be stipulated by possible interaction of their nonpolar segments with nonpolar sites on biomembrane surface. Structural rearrangements of molecular associates in aqueous solutions of low and high molecular weight cryoprotectant mixtures were designated as the experimentally established mechanism of cytotoxicity reduction in combined cryoprotective media.
{"title":"Study of Interaction of Glycerol Cryoprotectant and Its Derivatives with Dimethylacetamide in Aqueous Solution Using Fluorescent Probes","authors":"Tetiana Dyubko, V. Pivovarenko, V. Chekanova, Yuliya Pakhomova, Yana Gvozdiuk, A. Kompaniets, A. Tatarets","doi":"10.15407/cryo31.02.139","DOIUrl":"https://doi.org/10.15407/cryo31.02.139","url":null,"abstract":"In this paper we have studied the interaction of the mixtures of glycerol (GL) and its oxyethylated derivatives (OEG) with polymerization degree n = 3, 25 and 30 with dimethylacetamide (DMAc) in aqueous solution using 3-hydroxy-4´-(N, N dimethylaminoflavone) fluorescent probe. The combination of GL and its oxyethylated derivatives with DMAc was found to reduce the membranotropy of certain cryoprotective agents, forming a mixture. The combination of both GL and its low molecular weight derivative (OEGn=3) with DMAc reduced the membranotropy of the latter. At the same time, combining GL derivatives of high molecular weight (OEGn=25 and OEGn=30) with DMAc diminished the membranotropy of OEG. The OEGn=30 at concentrations above 1 wt.% was shown to form the micellar-type structures or micellar associates in aqueous solution. This enabled suggesting the membranotropic ability of high molecular weight OEG associates to be stipulated by possible interaction of their nonpolar segments with nonpolar sites on biomembrane surface. Structural rearrangements of molecular associates in aqueous solutions of low and high molecular weight cryoprotectant mixtures were designated as the experimentally established mechanism of cytotoxicity reduction in combined cryoprotective media.","PeriodicalId":53457,"journal":{"name":"Problems of Cryobiology and Cryomedicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45277101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Shevchenko, G. Kovalenko, I. Kovalenko, T. Stribul
Батат (Ipomoea batatas L.) вирощується у багатьох регіонах світу та за виробництвом посідає сьоме місце серед найважливіших харчових культур. Вірусні захворювання (зокрема Sweet potato feathery mottle virus та Sweet potato chlorotic stunt virus) перешкоджають одержанню великих урожаїв цієї рослини [1, 4, 5]. Відомо, що батат розмножується вегетативно, тому постійне постачання безвірусного посадкового матеріалу має вирішальне значення для його сталого виробництва. Культуру меристем широко використовують для отримання безвірусних клонів культурних рослин. Ефективність видалення вірусів залежить від розміру верхівкових меристем: чим менший розмір зразка, тим більша ймовірність отримання безвірусної рослини. Останнім часом кріоконсервування вважається ефективним методом елімінації вірусів з рослинного матеріалу [5]. За даними літератури життєздатність меристем батату після низькотемпературного впливу не перевищує 40% [3]. Це може бути пов’язане з тим, що термін експозиції зразків у кріозахисних розчинах є або недостатнім для ефективної дегідратації, або, навпаки, занадто тривалим, що призводить до прояву токсичної дії хімічних сполук. Отже, підбір кріозахисного середовища та термінів експозиції меристем – надзвичайно актуальна проблема. Метою даної роботи було дослідження осмотичних реакцій меристем батату у кріозахисних розчинах для визначення терміну експозиції з максималь-
{"title":"Discovery of Osmotic Responses of Sweet Potato Meristems in Cryoprotective Solutions","authors":"N. Shevchenko, G. Kovalenko, I. Kovalenko, T. Stribul","doi":"10.15407/cryo31.02.180","DOIUrl":"https://doi.org/10.15407/cryo31.02.180","url":null,"abstract":"Батат (Ipomoea batatas L.) вирощується у багатьох регіонах світу та за виробництвом посідає сьоме місце серед найважливіших харчових культур. Вірусні захворювання (зокрема Sweet potato feathery mottle virus та Sweet potato chlorotic stunt virus) перешкоджають одержанню великих урожаїв цієї рослини [1, 4, 5]. Відомо, що батат розмножується вегетативно, тому постійне постачання безвірусного посадкового матеріалу має вирішальне значення для його сталого виробництва. Культуру меристем широко використовують для отримання безвірусних клонів культурних рослин. Ефективність видалення вірусів залежить від розміру верхівкових меристем: чим менший розмір зразка, тим більша ймовірність отримання безвірусної рослини. Останнім часом кріоконсервування вважається ефективним методом елімінації вірусів з рослинного матеріалу [5]. За даними літератури життєздатність меристем батату після низькотемпературного впливу не перевищує 40% [3]. Це може бути пов’язане з тим, що термін експозиції зразків у кріозахисних розчинах є або недостатнім для ефективної дегідратації, або, навпаки, занадто тривалим, що призводить до прояву токсичної дії хімічних сполук. Отже, підбір кріозахисного середовища та термінів експозиції меристем – надзвичайно актуальна проблема. Метою даної роботи було дослідження осмотичних реакцій меристем батату у кріозахисних розчинах для визначення терміну експозиції з максималь-","PeriodicalId":53457,"journal":{"name":"Problems of Cryobiology and Cryomedicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44459734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Goltsev, I. Kryvoruchko, G. Goltsev, K. Parkhomenko, E. Horoshun
The paper considers the possibilities of using in medical practice various cryomethods and techniques of cryopreservation of biological objects to treat the patients with purulent chronic wounds (PCW). The variety of methods and approaches to apply cold in medical practice: general and local cryotherapy, cryosurgery etc. has been emphasized. As a result of using each of these methods, regenerative processes begin, which promote the healing of PCW. Particular attention is paid to cryotechniques, ensuring the preservation of cord blood at low temperatures. Cord blood cells and serum have been shown to have immune modulatory and trophic-stimulating therapeutic effects, that is extremely important when treating the patients with PCW. The issue of combined use of cord blood serum and innovative vacuum therapy for the patients with PCW has been considered.
{"title":"Use of Modern Cryomethods in Combined Surgical Treatment of Patients with Purulent Chronic Wounds","authors":"K. Goltsev, I. Kryvoruchko, G. Goltsev, K. Parkhomenko, E. Horoshun","doi":"10.15407/cryo31.02.109","DOIUrl":"https://doi.org/10.15407/cryo31.02.109","url":null,"abstract":"The paper considers the possibilities of using in medical practice various cryomethods and techniques of cryopreservation of biological objects to treat the patients with purulent chronic wounds (PCW). The variety of methods and approaches to apply cold in medical practice: general and local cryotherapy, cryosurgery etc. has been emphasized. As a result of using each of these methods, regenerative processes begin, which promote the healing of PCW. Particular attention is paid to cryotechniques, ensuring the preservation of cord blood at low temperatures. Cord blood cells and serum have been shown to have immune modulatory and trophic-stimulating therapeutic effects, that is extremely important when treating the patients with PCW. The issue of combined use of cord blood serum and innovative vacuum therapy for the patients with PCW has been considered.","PeriodicalId":53457,"journal":{"name":"Problems of Cryobiology and Cryomedicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45064240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
O. Isayenko, O. Knysh, M. Popov, V. Minukhin, Eugeny Babych, O. Peretyatko
This paper describes the temperature regimens and shelf life of biologically active complexes (structural components and metabolites) of Lactobacillus rhamnosus GG and Saccharomyces boulardii, which have antimicrobial activity and reduce biofi lm formation in pathogenic agents of Corynebacterium spp. Preservation of biological activity of complexes after 6-month storage (observation period) at (−23 ± 1)°C and for 60 days (observation period) under hypothermia at (4 ± 1)°C has been demonstrated. The degree of inhibition of biofi lm formation in pathogenic corynebacteria depended on sensitivity of the Corynebacterium spp. test-culture strain to products of microbial origin. A mixture of lactobacillus and saccharomycete metabolites displayed weak biofi lm formation by toxicogenic strains of corynebacteria (p < 0.05). Our fi ndings testifi ed to a possible use of biologically active substances, stored at 4 and −23°C in designing the L. rhamnosus GG and S. boulardii complexes and in technological processes of their production to prevent the persistence of the diphtheria pathogens.
{"title":"Impact of Biologically Active Complexes of L. rhamnosus GG and S. boulardii After Storage Under Low Temperatures on Biofilm Forming Ability in Corynebacteria","authors":"O. Isayenko, O. Knysh, M. Popov, V. Minukhin, Eugeny Babych, O. Peretyatko","doi":"10.15407/cryo31.02.127","DOIUrl":"https://doi.org/10.15407/cryo31.02.127","url":null,"abstract":"This paper describes the temperature regimens and shelf life of biologically active complexes (structural components and metabolites) of Lactobacillus rhamnosus GG and Saccharomyces boulardii, which have antimicrobial activity and reduce biofi lm formation in pathogenic agents of Corynebacterium spp. Preservation of biological activity of complexes after 6-month storage (observation period) at (−23 ± 1)°C and for 60 days (observation period) under hypothermia at (4 ± 1)°C has been demonstrated. The degree of inhibition of biofi lm formation in pathogenic corynebacteria depended on sensitivity of the Corynebacterium spp. test-culture strain to products of microbial origin. A mixture of lactobacillus and saccharomycete metabolites displayed weak biofi lm formation by toxicogenic strains of corynebacteria (p < 0.05). Our fi ndings testifi ed to a possible use of biologically active substances, stored at 4 and −23°C in designing the L. rhamnosus GG and S. boulardii complexes and in technological processes of their production to prevent the persistence of the diphtheria pathogens.","PeriodicalId":53457,"journal":{"name":"Problems of Cryobiology and Cryomedicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44331053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Pobielienskyi, O. Pakhomov, Gurina Tetyana Gurina Tetyana, Liliia Pobielienska, Ievgen Legach Ievgen, G. Bozhok
Cryoablation under endoscopic control is considered to be a promising approach in therapy of benign nodules of thyroid gland (TG). However, pathologically altered TG tissue differs in thermal conductivity and heat capacity from normal one, therefore the model experiments in animals are necessary to determine the cryoablation parameters. In this research, the changes of temperature during cryoablation of experimental rat TG under normal conditions and the one with propylthiouracil (PTU)-induced diffuse hyperplasia (DH) were comparatively assessed. TG was cryo-ablated in rats, previously received a 0.1% PTU solution within 90 days, using a copper cryoprobe, cooled to liquid nitrogen temperature. The process was controlled using thermocouples placed at different distances from the iceball. Differences between thermograms of intact TG tissue and the samples with PTU-induced DH were established. To achieve the destruction effect of TG with DH to a depth of more than 1 mm, the need of implementing two freeze-thaw cycles with 120-second cryoprobe exposure was proven.
{"title":"Experimental Cryoablation of Thyroid Gland with Propilthiouracyl-Induced Diffuse Hyperplasiae","authors":"K. Pobielienskyi, O. Pakhomov, Gurina Tetyana Gurina Tetyana, Liliia Pobielienska, Ievgen Legach Ievgen, G. Bozhok","doi":"10.15407/cryo31.02.168","DOIUrl":"https://doi.org/10.15407/cryo31.02.168","url":null,"abstract":"Cryoablation under endoscopic control is considered to be a promising approach in therapy of benign nodules of thyroid gland (TG). However, pathologically altered TG tissue differs in thermal conductivity and heat capacity from normal one, therefore the model experiments in animals are necessary to determine the cryoablation parameters. In this research, the changes of temperature during cryoablation of experimental rat TG under normal conditions and the one with propylthiouracil (PTU)-induced diffuse hyperplasia (DH) were comparatively assessed. TG was cryo-ablated in rats, previously received a 0.1% PTU solution within 90 days, using a copper cryoprobe, cooled to liquid nitrogen temperature. The process was controlled using thermocouples placed at different distances from the iceball. Differences between thermograms of intact TG tissue and the samples with PTU-induced DH were established. To achieve the destruction effect of TG with DH to a depth of more than 1 mm, the need of implementing two freeze-thaw cycles with 120-second cryoprobe exposure was proven.","PeriodicalId":53457,"journal":{"name":"Problems of Cryobiology and Cryomedicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45764705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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