1
|
Fizikova A, Subcheva E, Kozlov N, Tvorogova V, Samarina L, Lutova L, Khlestkina E. Agrobacterium Transformation of Tea Plants ( Camellia sinensis (L.) KUNTZE): A Small Experiment with Great Prospects. Plants (Basel) 2024; 13:675. [PMID: 38475520 DOI: 10.3390/plants13050675] [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] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/16/2024] [Accepted: 02/24/2024] [Indexed: 03/14/2024]
Abstract
Tea has historically been one of the most popular beverages, and it is currently an economically significant crop cultivated in over 50 countries. The Northwestern Caucasus is one of the northernmost regions for industrial tea cultivation worldwide. The domestication of the tea plant in this region took approximately 150 years, during which plantations spreading from the Ozurgeti region in northern Georgia to the southern city of Maykop in Russia. Consequently, tea plantations in the Northern Caucasus can serve as a source of unique genotypes with exceptional cold tolerance. Tea plants are known to be recalcitrant to Agrobacterium-mediated transfection. Research into optimal transfection and regeneration methodologies, as well as the identification of tea varieties with enhanced transformation efficiency, is an advanced strategy for improving tea plant culture. The aim of this study was to search for the optimal Agrobacterium tumefaciens-mediated transfection protocol for the Kolkhida tea variety. As a result of optimizing the transfection medium with potassium phosphate buffer at the stages of pre-inoculation, inoculation and co-cultivation, the restoration of normal morphology and improvement in the attachment of Agrobacterium cells to the surface of tea explants were observed by scanning electron microscopy. And an effective method of high-efficiency Agrobacteria tumefaciens-mediated transfection of the best local tea cultivar, Kolkhida, was demonstrated for the first time.
Collapse
Affiliation(s)
- Anastasia Fizikova
- Plant Biology and Biotechnology Department, Sirius University of Science and Technology, Olympic Avenue, 1, 354340 Sochi, Russia
- Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, 2/28, Yana Fabritsiusa Street, 354002 Sochi, Russia
| | - Elena Subcheva
- Plant Biology and Biotechnology Department, Sirius University of Science and Technology, Olympic Avenue, 1, 354340 Sochi, Russia
| | - Nikolay Kozlov
- Department of Genetics and Biotechnology, Saint Petersburg State University, Universitetskaya Emb 7/9, 199034 Saint-Petersburg, Russia
| | - Varvara Tvorogova
- Plant Biology and Biotechnology Department, Sirius University of Science and Technology, Olympic Avenue, 1, 354340 Sochi, Russia
- Department of Genetics and Biotechnology, Saint Petersburg State University, Universitetskaya Emb 7/9, 199034 Saint-Petersburg, Russia
| | - Lidia Samarina
- Plant Biology and Biotechnology Department, Sirius University of Science and Technology, Olympic Avenue, 1, 354340 Sochi, Russia
- Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, 2/28, Yana Fabritsiusa Street, 354002 Sochi, Russia
| | - Ludmila Lutova
- Plant Biology and Biotechnology Department, Sirius University of Science and Technology, Olympic Avenue, 1, 354340 Sochi, Russia
- Department of Genetics and Biotechnology, Saint Petersburg State University, Universitetskaya Emb 7/9, 199034 Saint-Petersburg, Russia
| | - Elena Khlestkina
- Plant Biology and Biotechnology Department, Sirius University of Science and Technology, Olympic Avenue, 1, 354340 Sochi, Russia
- N.I. Vavilov All-Russian Research Institute of Plant Genetic Resources (VIR), B. Morskaya Street, 42-44, 190000 St. Petersburg, Russia
| |
Collapse
|
2
|
Kozlov N, Pozyabin S, Bhattarai B, Lipták T, Fuchs J, Marešová S, Kuricová M. Surgical management of intervertebral disc extrusion in a rabbit. J Small Anim Pract 2022; 63:570. [PMID: 35322419 DOI: 10.1111/jsap.13496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/06/2022] [Accepted: 02/20/2022] [Indexed: 11/28/2022]
Affiliation(s)
- N Kozlov
- Moscow Veterinary Academy named after K.I. Skryabin, Moscow, Russia
| | - S Pozyabin
- Moscow Veterinary Academy named after K.I. Skryabin, Moscow, Russia
| | - B Bhattarai
- Moscow Veterinary Academy named after K.I. Skryabin, Moscow, Russia
| | - T Lipták
- University of Veterinary Medicine and Pharmacy in Kosice, Small Animal Clinic, 04001, Košice, Slovakia
| | - J Fuchs
- University of Veterinary Medicine and Pharmacy in Kosice, Small Animal Clinic, 04001, Košice, Slovakia
| | - S Marešová
- University of Veterinary Medicine and Pharmacy in Kosice, Small Animal Clinic, 04001, Košice, Slovakia
| | - M Kuricová
- University of Veterinary Medicine and Pharmacy in Kosice, Small Animal Clinic, 04001, Košice, Slovakia
| |
Collapse
|
3
|
Gordeyev S, Ivanov V, Fedianin M, Chernikh M, Kozlov N, Petrov L, Erygin D, Gridasov I, Kaushanskiy V, Feoktistov D, Mamedli Z. Neoadjuvant chemoradiotherapy for locally advanced rectal cancer with peritumoral abscesses and fistulas. Strahlenther Onkol 2021; 198:201-208. [PMID: 34825253 DOI: 10.1007/s00066-021-01878-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 11/01/2021] [Indexed: 11/29/2022]
Abstract
PURPOSE Rectal cancer patients who present with peritumoral abscesses and fistulas at the time of diagnosis may be denied chemoradiotherapy (CRT) as the safety is unknown. The aim of this study was to investigate the safety of preoperative CRT in this patient group. METHODS We performed a retrospective nested case-control study to compare outcomes between patients with locally advanced rectal cancer with peritumoral abscesses and fistulas (study group) and patients with T4 locally advanced rectal cancer with no evidence of abscesses and fistulas (control group). These groups were matched by treatment center and radiotherapy delivery method. All patients received 50-54 Gy of conventionally fractionated RT with concurrent chemotherapy. Primary endpoint was grade 3-5 toxicity (by National Cancer Institute Common Toxicity Criteria for Adverse Events (NCI CTCAE). Secondary endpoints included postoperative morbidity, pathologic complete response (pCR), disease-free survival (DFS), and overall survival (OS) at 2 years. RESULTS A total of 33 patients were included in each group. Grade 3 toxicity was observed in 2 (6.1%) patients in the study group and 4 (12.1%) patients in the control group (p = 0.672). No patients developed grade 4-5 toxicity. Grade 3-4 Clavien-Dindo complications were observed in 5 (15.2%) patients in the study group and in 6 (18.2%) patients in the control group (p = 1.0). Pathologic CR was achieved in 3 (9.1%) and 5 (15.2%) patients, respectively (p = 0.708). Two-year OS was 78.3% vs. 81.8% (p = 0.944), 2‑year DFS was 62.8% vs. 69.7% (p = 0.693), respectively. CONCLUSION The presence of peritumoral abscesses and fistulas in patients with locally advanced rectal cancer is not associated with increased toxicity or inferior clinical outcomes after preoperative CRT.
Collapse
Affiliation(s)
- Sergey Gordeyev
- N.N.Blokhin National Medical Research Center of Oncology, 23, Kashirskoe shosse, 115478, Moscow, Russian Federation.
| | - Valerii Ivanov
- "PET-technology" cancer center, 26, 50 let VLKSM st., 142110, Podolsk, Russian Federation
| | - Mikhail Fedianin
- N.N.Blokhin National Medical Research Center of Oncology, 23, Kashirskoe shosse, 115478, Moscow, Russian Federation.,Department of oncology and hematology at medical faculty of the Peoples' Friendship University of Russia (RUDN University), Moscow, Russian Federation
| | - Marina Chernikh
- N.N.Blokhin National Medical Research Center of Oncology, 23, Kashirskoe shosse, 115478, Moscow, Russian Federation.,"PET-technology" cancer center, 26, 50 let VLKSM st., 142110, Podolsk, Russian Federation.,I.M.Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | - Nikolay Kozlov
- N.N.Blokhin National Medical Research Center of Oncology, 23, Kashirskoe shosse, 115478, Moscow, Russian Federation
| | - Leonid Petrov
- A.F. Tsyb Medical Radiological Research Center, Zhukov st., 249031, Obninsk, Russian Federation
| | - Dmitriy Erygin
- Moscow city oncological hospital № 1, Baumanskaya 17/1, 105005, Moscow, Russian Federation
| | - Ivan Gridasov
- Stavropol regional oncological dispensary, 182A, Oktyabrskaya st., 355047, Stavropol, Russian Federation
| | - Valery Kaushanskiy
- Krasnodar regional oncological dispensary, 146, Dmitrova st., 350040, Krasnodar, Russian Federation
| | - Dmitry Feoktistov
- Bashkir regional oncological dispensary, 73/1, Prospekt Octyabrya, 450054, Ufa, Russian Federation
| | - Zaman Mamedli
- N.N.Blokhin National Medical Research Center of Oncology, 23, Kashirskoe shosse, 115478, Moscow, Russian Federation
| |
Collapse
|
4
|
Kozlov N, Bhattarai B. Spina bifida occulta and surgical treatment in a Yorkshire terrier. J Small Anim Pract 2019; 60:636. [PMID: 31364778 DOI: 10.1111/jsap.13053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 01/23/2019] [Accepted: 04/12/2019] [Indexed: 11/29/2022]
Affiliation(s)
- N Kozlov
- *Moscow Veterinary Academy of Medicine and Biotechnology named after K.I. Skryabin, Moscow 109457, Russia
| | - B Bhattarai
- *Moscow Veterinary Academy of Medicine and Biotechnology named after K.I. Skryabin, Moscow 109457, Russia
| |
Collapse
|
5
|
Fedyanin M, Tryakin A, Pokataev I, Bulanov A, Sekhina O, Chekini D, Gordeev S, Aliev V, Kuzmichev D, Mamedli Z, Barsukov Y, Glebovskaya V, Tkachev S, Chernykh M, Kozlov N, Tjulandin S. Prognostic factors of chemo-radiotherapy efficacy in patients with locally-advanced rectal cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy281.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
6
|
Kolyadina IV, Bokhian VY, Pavlikova O, Komov D, Ganshina I, Zhukova L, Lyubchenko L, Kozlov N, Poddubnaya I. Clinical and biological features and response to preoperative chemotherapy in Russian women with breast cancer stage T1-3N0-1 according to genetic status. J Clin Oncol 2018. [DOI: 10.1200/jco.2018.36.15_suppl.e12651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
| | - Vahan Yurikovich Bokhian
- N. N. Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, Russian Federation
| | - Olga Pavlikova
- Russian Medical Academy for Postgraduate Education Russian Cancer Research Centre, Moscow, Russian Federation
| | - Dmitry Komov
- Federal State Budgetary Institution «N.N. Blokhin National Medical Research Center of Oncology» of the Ministry of Healf of the Russian Federation, Moscow, Russian Federation
| | - I. Ganshina
- N.N. Blokhin National Medical Cancer Research Center” of the Ministry of Healthcare of the Russian Federation, Moscow, Russian Federation
| | | | - Liudmila Lyubchenko
- N. N. Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, Russia
| | - Nikolay Kozlov
- N. N. Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, Russia
| | - Irina Poddubnaya
- N. N. Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, Russia
| |
Collapse
|
7
|
Kolyadina I, Ganshina I, Zhukova L, Abdullaev A, Komov D, Poddubnaya I, Pavlikova O, Vishnevskaya Y, Kozlov N, Khokhlova S. The first results of neoadjuvant therapy with the biosimilar of trastuzumab in HER2+ breast cancer stage II-III in routine Russian practice. Eur J Cancer 2018. [DOI: 10.1016/s0959-8049(18)30547-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
8
|
Chugh M, Piskarev V, Galanina O, Khasbiullina N, Kadam P, Shilova N, Pazynina G, Dobrochaeva K, Bhanushali P, Kozlov N, Tupitsin N, Bovin N. Glycoprotein CA19.9-specific monoclonal antibodies recognize sialic acid-independent glycotope. Tumour Biol 2017; 39:1010428317725434. [PMID: 29072130 DOI: 10.1177/1010428317725434] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A repertoire of monoclonal antibodies was generated by immunization of mice with cancer-associated glycoprotein CA19.9, and two of them were selected as optimal capture and detecting counterparts for sandwich test system for detection of CA19.9. Fine epitope specificity of the antibodies was determined using printed glycan array, enzyme-linked immunosorbent assay, and inhibitory enzyme-linked immunosorbent assay. Unexpectedly, both immunoglobulins did not bind key epitope of CA19.9 glycoprotein, tetrasaccharide SiaLeA, as well as its defucosylated form sialyl LeC (known as CA-50 epitope). The antibodies were found to have different glycan-binding profiles; however, they recognized similar glycotopes with common motif Galβ1-3GlcNAcβ (LeC), thus resembling specificity of human natural cancer-associated anti-LeC antibodies. We propose that cancer-specific glycopeptide epitope includes Galβ1-3GlcNAcβ fragment of a glycoprotein O-chain in combination with proximal hydrophobic amino acid(s) of the polypeptide chain.
Collapse
Affiliation(s)
| | - Vladimir Piskarev
- 2 A.N.Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Moscow, Russia
| | - Oxana Galanina
- 3 Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia
| | - Nailya Khasbiullina
- 3 Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia.,4 Semiotik LLC, Moscow, Russia
| | | | - Nadezhda Shilova
- 3 Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia.,4 Semiotik LLC, Moscow, Russia
| | - Galina Pazynina
- 3 Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia
| | - Kira Dobrochaeva
- 3 Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia
| | | | - Nikolay Kozlov
- 6 FSNS N.N. Blokhin Oncological Scientific Center, Moscow, Russia
| | - Nikolay Tupitsin
- 6 FSNS N.N. Blokhin Oncological Scientific Center, Moscow, Russia
| | - Nicolai Bovin
- 3 Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia
| |
Collapse
|
9
|
Fedyanin M, Tryakin A, Elsnukaeva K, Gordeev S, Sekhina O, Pokataev I, Glebovskaya V, Kozlov N, Rasulov A, Tjulandin S. Role of adjuvant chemotherapy in patients with locally advanced rectal carcinoma after preoperative chemoradiotherapy: Single center experience. J Clin Oncol 2017. [DOI: 10.1200/jco.2017.35.15_suppl.e15147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e15147 Background: Various national guidance provide different approaches in adjuvant chemotherapy for locally advanced rectal carcinoma initially treated with preoperative chemoradiotherapy. We evaluated the efficacy of adjuvant chemotherapy depending on the clinical stage of disease (prior to chemoradiotherapy) and yp stage (after surgery). Methods: Preoperative chemoradiotherapy was administered in 457 patients with locally advanced rectal carcinoma. Radiotherapy was performed in pts receiving capecitabine (64%), intravenous administration of 5-FU (16%) or combination fluoropyrimidines with oxaliplatin (20%). Adjuvant chemotherapy was administered in 98 patients (21%) (fluoropyrimidines alone (20%) or in combination with oxaliplatin (80% patients). Overall survival (OS) was the primary endpoint. Statistical analysis was performed in IBM SPSS statistics v.20 software package. Results: the mean age of patients was 56.6 years, male - 56%. Median of follow up was 42 months (2-141). Adjuvant chemotherapy did not result to better OS in any of clinical stage (p = 0.6 HR 1.1, 95% CI 0.6-2.1). However adjuvant chemotherapy tended to improve disease free survival (DFS) in stage ypT0-4N1-2M0 (р=0.1, HR=0.6, 95%CI 0.4-1.1). Subanalysis showed significant improvement of DFS in patients with ypT1-4N2M0: median of DFS in patients with adjuvant chemotherapy was 62 months, in patients from group of surveillance – 16 months (р<0.01, HR=0.3, 95%CI 0.14-0.7) and a tendency to improvement of OS (table). Conclusions: Our retrospective data confirmed the results of ADORE prospective trial, and showed that adjuvant chemotherapy for locally advanced rectal carcinoma after chemoradiotherapy should be administered only in patients with residual positive lymph nodes (yp stage III). [Table: see text]
Collapse
Affiliation(s)
- Mikhail Fedyanin
- N. N. Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, Russia
| | - Alexey Tryakin
- N. N. Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, Russia
| | - Kheda Elsnukaeva
- N. N. Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, Russia
| | - Sergey Gordeev
- N. N. Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, Russia
| | - Olga Sekhina
- N. N. Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, Russia
| | - Ilya Pokataev
- N. N. Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, Russia
| | - Valeriya Glebovskaya
- N. N. Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, Russia
| | - Nikolay Kozlov
- N. N. Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, Russia
| | - Arsen Rasulov
- N. N. Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, Russia
| | - Sergei Tjulandin
- N. N. Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, Russia
| |
Collapse
|
10
|
Kozlov N, Fairushin R. Using Fourier spectroscopy for the assessment of oxidative degradation of polypropylene medical meshes. JBPE 2017. [DOI: 10.18287/jbpe17.03.020310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
|
11
|
Kozlov N, Benzon HT, Malik K. Epidural steroid injections: update on efficacy, safety, and newer medications for injection. Minerva Anestesiol 2015; 81:901-909. [PMID: 25311951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The best evidence for epidural injection appears to be in the setting of radicular pain with epidural steroid and non-steroid injections more efficacious than non-epidural injections. Studies showed the efficacy of non-particulate steroid to approach the efficacy of particulate steroid and very limited comparisons demonstrated no significant difference between epidural steroid and epidural non-steroid (local anesthetic) injection. Preliminary studies evaluating epidural injection of disease modifying anti-rheumatic drugs such etanercept and tocilizumab showed conflicting results and had significant limitations. Randomized studies support better efficacy of transforaminal injection due to greater incidence of ventral epidural spread of injectate when compared to interlaminar injection. Thus, the transforaminal approach is recommended when unilateral radicular pain is limited to one nerve root. However, the transforaminal approach is associated with greater incidence of central nervous system injury, including paraplegia, attributed to embolization of the particulate steroid. Recent studies showed that non-particulate steroids potentially last as long as particulate steroids. Therefore non-particulate steroid should be used in initial transforaminal epidural injection. Future studies should look into the role of adjunct diagnostic aids, including digital subtraction angiography, in detecting intravascular injection and the ideal site of needle placement, whether it is the safe triangle or the triangle of Kambin. Finally, the role of epidural disease -modifying antirheumatic drugs in the management of back pain needs to be better elucidated.
Collapse
Affiliation(s)
- N Kozlov
- Department of Anesthesiology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA -
| | | | | |
Collapse
|
12
|
Kovalskaya S, Kozlov N, Aricu A, Kulcitki V, Ungur N. (-)-Sclareol Conversion in Ritter's Reaction Conditions. ChemJMold 2012. [DOI: 10.19261/cjm.2012.07(2).01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The main products of sclareol (1) Ritter’s reaction in mild conditions are (8R,13R)-Labd-14(15)-en-8,13-diacetamide (2) (8R,13S)-Labd-14(15)-en-8,13-diacetamide (3) stereoisomeric on C13 atom and having unrearranged native diol skeleton. We present in the current communication the results of sclareol converting (1) into nitrogen-containing labdanes in the Ritter’s reaction conditions.
Collapse
|
13
|
Ignatovich J, Gusak K, Kovalyov V, Kozlov N, Koroleva E. Synthesis of functionalized benzyl amines by the reductive alkylation of heterocyclic and heteroaromatic amines with arylaldehydes and preparation of the intermediates for new synthetic biomolecules. ARKIVOC 2008. [DOI: 10.3998/ark.5550190.0009.905] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|
14
|
Venu RP, Geenen JE, Toouli J, Hogan WJ, Kozlov N, Stewart ET. Gallstone dissolution using mono-octanoin infusion through an endoscopically placed nasobiliary catheter. Am J Gastroenterol 1982; 77:227-30. [PMID: 7072693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Endoscopic sphincterotomy is widely being used for the treatment of common bile duct stones. In a small group of patients the gallstones are large in size and, hence, difficult to be extracted after a successful endoscopic sphincterotomy. We used a constant infusion of mono-octanoin through a nasobiliary catheter in nine such patients. This method was successful in partial or complete dissolution of the stones in 74% of the patients. In the remaining 36% of the patients, the stones were noted to be soft allowing easy extraction by crushing.
Collapse
|
15
|
Thirakomen K, Kozlov N, Arruda JA, Kurtzman NA. Renal hydrogen ion secretion after release of unilateral ureteral obstruction. Am J Physiol 1976; 231:1233-9. [PMID: 10740 DOI: 10.1152/ajplegacy.1976.231.4.1233] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The effect of 24 h of unilateral ureteral obstruction on HCO3 reabsroption and urinary acidification was studied in dogs. The postobstructed kidney (EK) had a significantly lower glomerular filtration rate and renal plasma flow than the contralateral kidney (CK). Urinary pH prior to HCO3 loading was significantly higher in the EK as was maximal HCO3 reabsorption. Saline loading depressed HCO3 reabsorption to the same degree in both kidneys. Urinary PCO2, during HCO3 loading, and during phosphate infusion, was significantly lower in the EK than the CK. Fractional Na excretion was significantly higher in the EK than the CK after deoxycorticosterone acetate administration. Na2SO4 administration enhanced acid excretion only in the CK. K excretion was significantly lower in the EK than the CK both during HCO3 loading and Na2SO4 administration. There was redistribution of cortical blood flow from the outer cortex toward the inner cortex in the EK as compared to the CK. There was no difference in plasma renin activity from both renal veins. These data demonstrate enhanced proximal H+ secretion (which is abolished by volume expansion) and impaired distal H+ secretion by the postobstructed kidney. The distal defect is likely an effect of a generalized disorder of distal transport in that both K secretion and steroid-responsive Na reabsorption were impaired in the postobstructed kidney.
Collapse
|