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Kemelbekov U, Volynkin V, Zhumakova S, Orynbassarova K, Papezhuk M, Yu V. Comparative Analysis of the Structure and Pharmacological Properties of Some Piperidines and Host-Guest Complexes of β-Cyclodextrin. Molecules 2024; 29:1098. [PMID: 38474609 DOI: 10.3390/molecules29051098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 02/25/2024] [Indexed: 03/14/2024] Open
Abstract
Pain and anesthesia are a problem for all physicians. Scientists from different countries are constantly searching for new anesthetic agents and methods of general anesthesia. In anesthesiology, the role and importance of local anesthesia always remain topical. In the present work, a comparative analysis of the results of pharmacological studies on models of the conduction and terminal anesthesia, as well as acute toxicity studies of the inclusion complex of 1-methyl-4-ethynyl-4-hydroxypiperidine (MEP) with β-cyclodextrin, was carried out. A virtual screening and comparative analysis of pharmacological activity were also performed on a number of the prepared piperidine derivatives and their host-guest complexes of β-cyclodextrin to identify the structure-activity relationship. Various programs were used to study biological activity in silico. For comparative analysis of chemical and pharmacological properties, data from previous works were used. For some piperidine derivatives, new dosage forms were prepared as beta-cyclodextrin host-guest complexes. Some compounds were recognized as promising local anesthetics. Pharmacological studies have shown that KFCD-7 is more active than reference drugs in terms of local anesthetic activity and acute toxicity but is less active than host-guest complexes, based on other piperidines. This fact is in good agreement with the predicted results of biological activity.
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Affiliation(s)
- Ulan Kemelbekov
- South Kazakhstan Medical Academy, 1 Al-Farabi Square, Shymkent 160019, Kazakhstan
- A.B. Bekturov Institute of Chemical Sciences, 106 Ualikhanov St., Almaty 050010, Kazakhstan
| | - Vitaly Volynkin
- Faculty of Chemistry, Kuban State University, Krasnodar 350040, Russia
| | - Symbat Zhumakova
- A.B. Bekturov Institute of Chemical Sciences, 106 Ualikhanov St., Almaty 050010, Kazakhstan
| | - Kulpan Orynbassarova
- South Kazakhstan Medical Academy, 1 Al-Farabi Square, Shymkent 160019, Kazakhstan
| | - Marina Papezhuk
- Faculty of Chemistry, Kuban State University, Krasnodar 350040, Russia
| | - Valentina Yu
- A.B. Bekturov Institute of Chemical Sciences, 106 Ualikhanov St., Almaty 050010, Kazakhstan
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Gussenov I, Berzhanova RZ, Mukasheva TD, Tatykhanova GS, Imanbayev BA, Sagyndikov MS, Kudaibergenov SE. Exploring Potential of Gellan Gum for Enhanced Oil Recovery. Gels 2023; 9:858. [PMID: 37998948 PMCID: PMC10671067 DOI: 10.3390/gels9110858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/06/2023] [Accepted: 10/08/2023] [Indexed: 11/25/2023] Open
Abstract
Extensive laboratory and field tests have shown that the gelation response of gellan gum to saline water makes it a promising candidate for enhanced oil recovery (EOR). The objective of this mini-review is to evaluate the applicability of gellan gum in EOR and compare its efficiency to other precursors, in particular, hydrolyzed polyacrylamide (HPAM). At first, the "sol-gel" phase transitions of gellan gum in aqueous-salt solutions containing mono- and divalent cations are considered. Then the rheological and mechanical properties of gellan in diluted aqueous solutions and gel state are outlined. The main attention is paid to laboratory core flooding and field pilot tests. The plugging behavior of gellan in laboratory conditions due to "sol-gel" phase transition is discussed in the context of conformance control and water shut-off. Due to its higher strength, gellan gum gel provided ~6 times greater resistance to the flow of brine in a 1 mm-width fracture compared to HPAM gel. The field trials carried out in the injection and production wells of the Kumkol oilfield, situated in Kazakhstan, demonstrated that over 6 and 11 months, there was an incremental oil recovery of 3790 and 5890 tons, respectively. To put it into perspective, using 1 kg of dry gellan resulted in the incremental production of 3.52 m3 (or 22 bbls) of oil. The treatment of the production well with 1 wt.% gellan solution resulted in a considerable decrease in the water cut up to 10-20% without affecting the oil flow rate. The advantages and disadvantages of gellan compared to HPAM are analyzed together with the economic feasibility of gellan over HPAM. The potential for establishing gellan production in Kazakhstan is emphasized. It is anticipated that gellan gum, manufactured through fermentation using glucose-fructose syrup from Zharkent and Burunday corn starch plants, could be expanded in the future for applications in both the food industry and oil recovery.
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Affiliation(s)
- Iskander Gussenov
- Institute of Polymer Materials and Technology, microdistrict “Atyrau 1”, 3/1, Almaty 050019, Kazakhstan;
- Petroleum Engineering Department, Satbayev University, Satbayev str. 22a, Almaty 050043, Kazakhstan
| | - Ramza Zh. Berzhanova
- Faculty of Biology and Biotechnology, al-Farabi Kazakh National University, 71 al-Farabi Ave., Almaty 050040, Kazakhstan; (R.Z.B.)
| | - Togzhan D. Mukasheva
- Faculty of Biology and Biotechnology, al-Farabi Kazakh National University, 71 al-Farabi Ave., Almaty 050040, Kazakhstan; (R.Z.B.)
| | - Gulnur S. Tatykhanova
- Institute of Polymer Materials and Technology, microdistrict “Atyrau 1”, 3/1, Almaty 050019, Kazakhstan;
- Petroleum Engineering Department, Satbayev University, Satbayev str. 22a, Almaty 050043, Kazakhstan
| | - Bakyt A. Imanbayev
- KMG Engineering LLP, 35 mkr, plot 6/1, Aktau R00P0D6, Kazakhstan; (B.A.I.)
| | | | - Sarkyt E. Kudaibergenov
- Institute of Polymer Materials and Technology, microdistrict “Atyrau 1”, 3/1, Almaty 050019, Kazakhstan;
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